1---------------------------------------- 217 July 2015. Summary of changes for version 20150717: 3 41) ACPICA kernel-resident subsystem: 5 6Improved the partitioning between the Debugger and Disassembler 7components. This allows the Debugger to be used standalone within kernel 8code without the Disassembler (which is used for single stepping also). 9This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 10 11Debugger: Implemented a new command to trace the execution of control 12methods (Trace). This is especially useful for the in-kernel version of 13the debugger when file I/O may not be available for method trace output. 14See the ACPICA reference for more information. Lv Zheng. 15 16Moved all C library prototypes (used for the local versions of these 17functions when requested) to a new header, acclib.h 18Cleaned up the use of non-ANSI C library functions. These functions are 19implemented locally in ACPICA. Moved all such functions to a common 20source file, utnonansi.c 21 22Debugger: Fixed a problem with the "!!" command (get last command 23executed) where the debugger could enter an infinite loop and eventually 24crash. 25 26Removed the use of local macros that were used for some of the standard C 27library functions to automatically cast input parameters. This mostly 28affected the is* functions where the input parameter is defined to be an 29int. This required a few modifications to the main ACPICA source code to 30provide casting for these functions and eliminate possible compiler 31warnings for these parameters. 32 33Across the source code, added additional status/error checking to resolve 34issues discovered by static source code analysis tools such as Coverity. 35 36Example Code and Data Size: These are the sizes for the OS-independent 37acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 38debug version of the code includes the debug output trace mechanism and 39has a much larger code and data size. 40 41 Current Release: 42 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 43 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 44 Previous Release: 45 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 46 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 47 48 492) iASL Compiler/Disassembler and Tools: 50 51iASL: Fixed a regression where the device map file feature no longer 52worked properly when used in conjunction with the disassembler. It only 53worked properly with the compiler itself. 54 55iASL: Implemented a new warning for method LocalX variables that are set 56but never used (similar to a C compiler such as gcc). This also applies 57to ArgX variables that are not defined by the parent method, and are 58instead (legally) used as local variables. 59 60iASL/Preprocessor: Finished the pass-through of line numbers from the 61preprocessor to the compiler. This ensures that compiler errors/warnings 62have the correct original line numbers and filenames, regardless of any 63#include files. 64 65iASL/Preprocessor: Fixed a couple of issues with comment handling and the 66pass-through of comments to the preprocessor output file (which becomes 67the compiler input file). Also fixed a problem with // comments that 68appear after a math expression. 69 70iASL: Added support for the TCPA server table to the table compiler and 71template generator. (The client table was already previously supported) 72 73iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 74identify the iASL compiler. 75 76Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 77multiple times. The new names are ACPI_SIGN_NEGATIVE and 78ACPI_SIGN_POSITIVE. 79 80AcpiHelp: Update to expand help messages for the iASL preprocessor 81directives. 82 83 84---------------------------------------- 8519 June 2015. Summary of changes for version 20150619: 86 87Two regressions in version 20150616 have been addressed: 88 89Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 90etc.) This update changes ACPICA to only use the standard headers for 91functions, or the prototypes for the local versions of the C library 92functions. Across the source code, this required some additional casts 93for some Clib invocations for portability. Moved all local prototypes to 94a new file, acclib.h 95 96Fixes several problems with recent changes to the handling of the FACS 97table that could cause some systems not to boot. 98 99 100---------------------------------------- 10116 June 2015. Summary of changes for version 20150616: 102 103 1041) ACPICA kernel-resident subsystem: 105 106Across the entire ACPICA source code base, the various macros for the C 107library functions (such as ACPI_STRLEN, etc.) have been removed and 108replaced by the standard C library names (strlen, etc.) The original 109purpose for these macros is no longer applicable. This simplification 110reduces the number of macros used in the ACPICA source code 111significantly, improving readability and maintainability. 112 113Implemented support for a new ACPI table, the OSDT. This table, the 114"override" SDT, can be loaded directly by the host OS at boot time. It 115enables the replacement of existing namespace objects that were installed 116via the DSDT and/or SSDTs. The primary purpose for this is to replace 117buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 118for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 119Moore. 120 121Added support for systems with (improperly) two FACS tables -- a "32-bit" 122table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 123X field). This change will support both automatically. There continues to 124be systems found with this issue. This support requires a change to the 125AcpiSetFirmwareWakingVector interface. Also, a public global variable has 126been added to allow the host to select which FACS is desired 127(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 128details Lv Zheng. 129 130Added a new feature to allow for systems that do not contain an FACS. 131Although this is already supported on hardware-reduced platforms, the 132feature has been extended for all platforms. The reasoning is that we do 133not want to abort the entire ACPICA initialization just because the 134system is seriously buggy and has no FACS. 135 136Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 137not correctly transcribed from the ACPI specification in ACPICA version 13820150515. 139 140Implemented support for the _CLS object in the AcpiGetObjectInfo external 141interface. 142 143Updated the definitions of the TCPA and TPM2 ACPI tables to the more 144recent TCG ACPI Specification, December 14, 2014. Table disassembler and 145compiler also updated. Note: The TCPA "server" table is not supported by 146the disassembler/table-compiler at this time. 147 148ACPI 6.0: Added definitions for the new GIC version field in the MADT. 149 150Example Code and Data Size: These are the sizes for the OS-independent 151acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 152debug version of the code includes the debug output trace mechanism and 153has a much larger code and data size. 154 155 Current Release: 156 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 157 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 158 Previous Release: 159 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 160 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 161 162 1632) iASL Compiler/Disassembler and Tools: 164 165Disassembler: Fixed a problem with the new symbolic operator disassembler 166where incorrect ASL code could be emitted in some cases for the "non- 167commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 168ShiftRight. The actual problem cases seem to be rather unusual in common 169ASL code, however. David Box. 170 171Modified the linux version of acpidump to obtain ACPI tables from not 172just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 173Zheng. 174 175iASL: Fixed a problem where the user preprocessor output file (.i) 176contained extra data that was not expected. The compiler was using this 177file as a temporary file and passed through #line directives in order to 178keep compiler error messages in sync with the input file and line number 179across multiple include files. The (.i) is no longer a temporary file as 180the compiler uses a new, different file for the original purpose. 181 182iASL: Fixed a problem where comments within the original ASL source code 183file were not passed through to the preprocessor output file, nor any 184listing files. 185 186iASL: Fixed some issues for the handling of the "#include" preprocessor 187directive and the similar (but not the same) "Include" ASL operator. 188 189iASL: Add support for the new OSDT in both the disassembler and compiler. 190 191iASL: Fixed a problem with the constant folding support where a Buffer 192object could be incorrectly generated (incorrectly formed) during a 193conversion to a Store() operator. 194 195AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 196description text for the _REV predefined name. _REV now permanently 197returns 2, as per the ACPI 6.0 specification. 198 199Debugger: Enhanced the output of the Debug ASL object for references 200produced by the Index operator. For Buffers and strings, only output the 201actual byte pointed to by the index. For packages, only print the single 202package element decoded by the index. Previously, the entire 203buffer/string/package was emitted. 204 205iASL/Table-compiler: Fixed a regression where the "generic" data types 206were no longer recognized, causing errors. 207 208 209---------------------------------------- 21015 May 2015. Summary of changes for version 20150515: 211 212This release implements most of ACPI 6.0 as described below. 213 2141) ACPICA kernel-resident subsystem: 215 216Implemented runtime argument checking and return value checking for all 217new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 218_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 219 220Example Code and Data Size: These are the sizes for the OS-independent 221acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 222debug version of the code includes the debug output trace mechanism and 223has a much larger code and data size. 224 225 Current Release: 226 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 227 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 228 Previous Release: 229 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 230 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 231 232 2332) iASL Compiler/Disassembler and Tools: 234 235iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 236names (argument count validation and return value typechecking.) 237 238iASL disassembler and table compiler: implemented support for all new 239ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 240 241iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 242tables: FADT, MADT. 243 244iASL preprocessor: Added a new directive to enable inclusion of binary 245blobs into ASL code. The new directive is #includebuffer. It takes a 246binary file as input and emits a named ascii buffer object into the ASL 247code. 248 249AcpiHelp: Added support for all new ACPI 6.0 predefined names. 250 251AcpiHelp: Added a new option, -d, to display all iASL preprocessor 252directives. 253 254AcpiHelp: Added a new option, -t, to display all known/supported ACPI 255tables. 256 257---------------------------------------- 25810 April 2015. Summary of changes for version 20150410: 259 260Reverted a change introduced in version 20150408 that caused 261a regression in the disassembler where incorrect operator 262symbols could be emitted. 263 264---------------------------------------- 26508 April 2015. Summary of changes for version 20150408: 266 267 2681) ACPICA kernel-resident subsystem: 269 270Permanently set the return value for the _REV predefined name. It now 271returns 2 (was 5). This matches other ACPI implementations. _REV will be 272deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 273for ACPI 2.0 and later. It should never be used to differentiate or 274identify operating systems. 275 276Added the "Windows 2015" string to the _OSI support. ACPICA will now 277return TRUE to a query with this string. 278 279Fixed several issues with the local version of the printf function. 280 281Added the C99 compiler option (-std=c99) to the Unix makefiles. 282 283 Current Release: 284 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 285 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 286 Previous Release: 287 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 288 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 289 290 2912) iASL Compiler/Disassembler and Tools: 292 293iASL: Implemented an enhancement to the constant folding feature to 294transform the parse tree to a simple Store operation whenever possible: 295 Add (2, 3, X) ==> is converted to: Store (5, X) 296 X = 2 + 3 ==> is converted to: Store (5, X) 297 298Updated support for the SLIC table (Software Licensing Description Table) 299in both the Data Table compiler and the disassembler. The SLIC table 300support now conforms to "Microsoft Software Licensing Tables (SLIC and 301MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 302following the ACPI header is now defined to be "Proprietary Data", and as 303such, can only be entered or displayed as a hex data block. 304 305Implemented full support for the MSDM table as described in the document 306above. Note: The format of MSDM is similar to SLIC. Any MSDM data 307following the ACPI header is defined to be "Proprietary Data", and can 308only be entered or displayed as a hex data block. 309 310Implemented the -Pn option for the iASL Table Compiler (was only 311implemented for the ASL compiler). This option disables the iASL 312preprocessor. 313 314Disassembler: For disassembly of Data Tables, added a comment field 315around the Ascii equivalent data that is emitted as part of the "Raw 316Table Data" block. This prevents the iASL Preprocessor from possible 317confusion if/when the table is compiled. 318 319Disassembler: Added an option (-df) to force the disassembler to assume 320that the table being disassembled contains valid AML. This feature is 321useful for disassembling AML files that contain ACPI signatures other 322than DSDT or SSDT (such as OEMx or other signatures). 323 324Changes for the EFI version of the tools: 3251) Fixed a build error/issue 3262) Fixed a cast warning 327 328iASL: Fixed a path issue with the __FILE__ operator by making the 329directory prefix optional within the internal SplitInputFilename 330function. 331 332Debugger: Removed some unused global variables. 333 334Tests: Updated the makefile for proper generation of the AAPITS suite. 335 336---------------------------------------- 33704 February 2015. Summary of changes for version 20150204: 338 339ACPICA kernel-resident subsystem: 340 341Updated all ACPICA copyrights and signons to 2014. Added the 2014 342copyright to all module headers and signons, including the standard Linux 343header. This affects virtually every file in the ACPICA core subsystem, 344iASL compiler, all ACPICA utilities, and the test suites. 345 346Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 347A raw gpe handling mechanism was created to allow better handling of GPE 348storms that aren't easily managed by the normal handler. The raw handler 349allows disabling/renabling of the the GPE so that interrupt storms can be 350avoided in cases where events cannot be timely serviced. In this 351scenario, handlers should use the AcpiSetGpe() API to disable/enable the 352GPE. This API will leave the reference counts undisturbed, thereby 353preventing unintentional clearing of the GPE when the intent in only to 354temporarily disable it. Raw handlers allow enabling and disabling of a 355GPE by removing GPE register locking. As such, raw handlers much provide 356their own locks while using GPE API's to protect access to GPE data 357structures. 358Lv Zheng 359 360Events: Always modify GPE registers under the GPE lock. 361Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 362values. Reported as bug by joe.liu@apple.com. 363 364Unix makefiles: Separate option to disable optimizations and 365_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 366NOOPT disable option and creates a separate flag (NOFORTIFY) for this 367purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 368errors when building ACPICA. This allows disabling the option without 369also having to disable optimazations. 370David Box 371 372 Current Release: 373 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 374 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 375 376---------------------------------------- 37707 November 2014. Summary of changes for version 20141107: 378 379This release is available at https://acpica.org/downloads 380 381This release introduces and implements language extensions to ASL that 382provide support for symbolic ("C-style") operators and expressions. These 383language extensions are known collectively as ASL+. 384 385 3861) iASL Compiler/Disassembler and Tools: 387 388Disassembler: Fixed a problem with disassembly of the UartSerialBus 389macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 390Box. 391 392Disassembler: Fixed the Unicode macro support to add escape sequences. 393All non-printable ASCII values are emitted as escape sequences, as well 394as the standard escapes for quote and backslash. Ensures that the 395disassembled macro can be correctly recompiled. 396 397iASL: Added Printf/Fprintf macros for formatted output. These macros are 398translated to existing AML Concatenate and Store operations. Printf 399writes to the ASL Debug object. Fprintf allows the specification of an 400ASL name as the target. Only a single format specifier is required, %o, 401since the AML interpreter dynamically converts objects to the required 402type. David E. Box. 403 404 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 405 (Concatenate (Concatenate (Concatenate ("", Arg0), 406 ": Unexpected value for "), Arg1), ", "), Arg2), 407 " at line "), Arg3), Debug) 408 409 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 410 Arg0, Arg1, Arg2, Arg3) 411 412 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 413 ("", Arg1), ": "), Arg0), " Successful"), STR1) 414 415 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 416 417iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 418ASL parse tree before the AML code is generated. This allows blocks of 419ASL code to be removed in order to help locate and identify problem 420devices and/or code. David E. Box. 421 422AcpiExec: Added support (-fi) for an optional namespace object 423initialization file. This file specifies initial values for namespace 424objects as necessary for debugging and testing different ASL code paths 425that may be taken as a result of BIOS options. 426 427 4282) Overview of symbolic operator support for ASL (ASL+) 429------------------------------------------------------- 430 431As an extension to the ASL language, iASL implements support for symbolic 432(C-style) operators for math and logical expressions. This can greatly 433simplify ASL code as well as improve both readability and 434maintainability. These language extensions can exist concurrently with 435all legacy ASL code and expressions. 436 437The symbolic extensions are 100% compatible with existing AML 438interpreters, since no new AML opcodes are created. To implement the 439extensions, the iASL compiler transforms the symbolic expressions into 440the legacy ASL/AML equivalents at compile time. 441 442Full symbolic expressions are supported, along with the standard C 443precedence and associativity rules. 444 445Full disassembler support for the symbolic expressions is provided, and 446creates an automatic migration path for existing ASL code to ASL+ code 447via the disassembly process. By default, the disassembler now emits ASL+ 448code with symbolic expressions. An option (-dl) is provided to force the 449disassembler to emit legacy ASL code if desired. 450 451Below is the complete list of the currently supported symbolic operators 452with examples. See the iASL User Guide for additional information. 453 454 455ASL+ Syntax Legacy ASL Equivalent 456----------- --------------------- 457 458 // Math operators 459 460Z = X + Y Add (X, Y, Z) 461Z = X - Y Subtract (X, Y, Z) 462Z = X * Y Multiply (X, Y, Z) 463Z = X / Y Divide (X, Y, , Z) 464Z = X % Y Mod (X, Y, Z) 465Z = X << Y ShiftLeft (X, Y, Z) 466Z = X >> Y ShiftRight (X, Y, Z) 467Z = X & Y And (X, Y, Z) 468Z = X | Y Or (X, Y, Z) 469Z = X ^ Y Xor (X, Y, Z) 470Z = ~X Not (X, Z) 471X++ Increment (X) 472X-- Decrement (X) 473 474 // Logical operators 475 476(X == Y) LEqual (X, Y) 477(X != Y) LNotEqual (X, Y) 478(X < Y) LLess (X, Y) 479(X > Y) LGreater (X, Y) 480(X <= Y) LLessEqual (X, Y) 481(X >= Y) LGreaterEqual (X, Y) 482(X && Y) LAnd (X, Y) 483(X || Y) LOr (X, Y) 484(!X) LNot (X) 485 486 // Assignment and compound assignment operations 487 488X = Y Store (Y, X) 489X += Y Add (X, Y, X) 490X -= Y Subtract (X, Y, X) 491X *= Y Multiply (X, Y, X) 492X /= Y Divide (X, Y, , X) 493X %= Y Mod (X, Y, X) 494X <<= Y ShiftLeft (X, Y, X) 495X >>= Y ShiftRight (X, Y, X) 496X &= Y And (X, Y, X) 497X |= Y Or (X, Y, X) 498X ^= Y Xor (X, Y, X) 499 500 5013) ASL+ Examples: 502----------------- 503 504Legacy ASL: 505 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 506 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 5070x03FB), 508 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 509 { 510 And (MEMB, 0xFFFFFFF0, SRMB) 511 Store (MEMB, Local2) 512 Store (PDBM, Local1) 513 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 514 Store (SRMB, MEMB) 515 Or (PDBM, 0x02, PDBM) 516 } 517 518ASL+ version: 519 If (((R510 & 0x03FB) == 0x02E0) || 520 ((R520 & 0x03FB) == 0x02E0) || 521 ((R530 & 0x03FB) == 0x02E0) || 522 ((R540 & 0x03FB) == 0x02E0)) 523 { 524 SRMB = (MEMB & 0xFFFFFFF0) 525 Local2 = MEMB 526 Local1 = PDBM 527 PDBM &= 0xFFFFFFFFFFFFFFF9 528 MEMB = SRMB 529 PDBM |= 0x02 530 } 531 532Legacy ASL: 533 Store (0x1234, Local1) 534 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 535 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 536 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 537 Store (Index (PKG1, 0x03), Local6) 538 Store (Add (Local3, Local2), Debug) 539 Add (Local1, 0x0F, Local2) 540 Add (Local1, Multiply (Local2, Local3), Local2) 541 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 542 543ASL+ version: 544 Local1 = 0x1234 545 Local3 = (((Local1 + TEST) + 0x20) * Local2) 546 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 547 Local3 = (Local1 + (TEST + (0x20 * Local2))) 548 Local6 = Index (PKG1, 0x03) 549 Debug = (Local3 + Local2) 550 Local2 = (Local1 + 0x0F) 551 Local2 = (Local1 + (Local2 * Local3)) 552 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 553 554 555---------------------------------------- 55626 September 2014. Summary of changes for version 20140926: 557 5581) ACPICA kernel-resident subsystem: 559 560Updated the GPIO operation region handler interface (GeneralPurposeIo). 561In order to support GPIO Connection objects with multiple pins, along 562with the related Field objects, the following changes to the interface 563have been made: The Address is now defined to be the offset in bits of 564the field unit from the previous invocation of a Connection. It can be 565viewed as a "Pin Number Index" into the connection resource descriptor. 566The BitWidth is the exact bit width of the field. It is usually one bit, 567but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 568additional information and examples. 569 570GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 571corresponding _Lxx/_Exx methods are disabled (they may have been enabled 572by the firmware), so that they cannot fire until they are enabled via 573AcpiUpdateAllGpes. Rafael J. Wysocki. 574 575Added a new return flag for the Event/GPE status interfaces -- 576AcpiGetEventStatus and AcpiGetGpeStatus. The new 577ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 578GPE currently has a handler associated with it, and can thus actually 579affect the system. Lv Zheng. 580 581Example Code and Data Size: These are the sizes for the OS-independent 582acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 583debug version of the code includes the debug output trace mechanism and 584has a much larger code and data size. 585 586 Current Release: 587 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 588 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 589 Previous Release: 590 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 591 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 592 5932) iASL Compiler/Disassembler and Tools: 594 595iASL: Fixed a memory allocation/free regression introduced in 20140828 596that could cause the compiler to crash. This was introduced inadvertently 597during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 5981113. 599 600iASL: Removed two error messages that have been found to create false 601positives, until they can be fixed and fully validated (ACPICA BZ 1112): 6021) Illegal forward reference within a method 6032) Illegal reference across two methods 604 605iASL: Implemented a new option (-lm) to create a hardware mapping file 606that summarizes all GPIO, I2C, SPI, and UART connections. This option 607works for both the compiler and disassembler. See the iASL compiler user 608guide for additional information and examples (section 6.4.6). 609 610AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 611version 2. This corrects the AE_BAD_HEADER exception seen on systems with 612a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 613 614AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 615unless STDIN is actually a terminal. Assists with batch-mode processing. 616ACPICA BZ 1114. 617 618Disassembler/AcpiHelp: Added another large group of recognized _HID 619values. 620 621 622---------------------------------------- 62328 August 2014. Summary of changes for version 20140828: 624 6251) ACPICA kernel-resident subsystem: 626 627Fixed a problem related to the internal use of the Timer() operator where 628a 64-bit divide could cause an attempted link to a double-precision math 629library. This divide is not actually necessary, so the code was 630restructured to eliminate it. Lv Zheng. 631 632ACPI 5.1: Added support for the runtime validation of the _DSD package 633(similar to the iASL support). 634 635ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 636SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 637 638Example Code and Data Size: These are the sizes for the OS-independent 639acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 640debug version of the code includes the debug output trace mechanism and 641has a much larger code and data size. 642 643 Current Release: 644 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 645 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 646 Previous Release: 647 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 648 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 649 6502) iASL Compiler/Disassembler and Tools: 651 652AcpiExec: Fixed a problem on unix systems where the original terminal 653state was not always properly restored upon exit. Seen when using the -v 654option. ACPICA BZ 1104. 655 656iASL: Fixed a problem with the validation of the ranges/length within the 657Memory24 resource descriptor. There was a boundary condition when the 658range was equal to the (length -1) caused by the fact that these values 659are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 660 661Disassembler: Fixed a problem with the GpioInt descriptor interrupt 662polarity 663flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 664is 665now supported properly. 666 667ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 668in the disassembler, data table compiler, and table template generator. 669 670iASL: Added a requirement for Device() objects that one of either a _HID 671or _ADR must exist within the scope of a Device, as per the ACPI 672specification. Remove a similar requirement that was incorrectly in place 673for the _DSD object. 674 675iASL: Added error detection for illegal named references within control 676methods that would cause runtime failures. Now trapped as errors are: 1) 677References to objects within a non-parent control method. 2) Forward 678references (within a method) -- for control methods, AML interpreters use 679a one-pass parse of control methods. ACPICA BZ 1008. 680 681iASL: Added error checking for dependencies related to the _PSx power 682methods. ACPICA BZ 1029. 6831) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 684_PS3. 6852) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 686scope. 687 688iASL and table compiler: Cleanup miscellaneous memory leaks by fully 689deploying the existing object and string caches and adding new caches for 690the table compiler. 691 692iASL: Split the huge parser source file into multiple subfiles to improve 693manageability. Generation now requires the M4 macro preprocessor, which 694is part of the Bison distribution on both unix and windows platforms. 695 696AcpiSrc: Fixed and removed all extraneous warnings generated during 697entire ACPICA source code scan and/or conversion. 698 699 700---------------------------------------- 701 70224 July 2014. Summary of changes for version 20140724: 703 704The ACPI 5.1 specification has been released and is available at: 705http://uefi.org/specs/access 706 707 7080) ACPI 5.1 support in ACPICA: 709 710ACPI 5.1 is fully supported in ACPICA as of this release. 711 712New predefined names. Support includes iASL and runtime ACPICA 713validation. 714 _CCA (Cache Coherency Attribute). 715 _DSD (Device-Specific Data). David Box. 716 717Modifications to existing ACPI tables. Support includes headers, iASL 718Data Table compiler, disassembler, and the template generator. 719 FADT - New fields and flags. Graeme Gregory. 720 GTDT - One new subtable and new fields. Tomasz Nowicki. 721 MADT - Two new subtables. Tomasz Nowicki. 722 PCCT - One new subtable. 723 724Miscellaneous. 725 New notification type for System Resource Affinity change events. 726 727 7281) ACPICA kernel-resident subsystem: 729 730Fixed a regression introduced in 20140627 where a fault can happen during 731the deletion of Alias AML namespace objects. The problem affected both 732the core ACPICA and the ACPICA tools including iASL and AcpiExec. 733 734Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 735simple mechanism to enable wake GPEs that have no associated handler or 736control method. Rafael Wysocki. 737 738Updated the AcpiEnableGpe interface to disallow the enable if there is no 739handler or control method associated with the particular GPE. This will 740help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 741 742Updated GPE handling and dispatch by disabling the GPE before clearing 743the status bit for edge-triggered GPEs. Lv Zheng. 744 745Added Timer() support to the AML Debug object. The current timer value is 746now displayed with each invocation of (Store to) the debug object to 747enable simple generation of execution times for AML code (method 748execution for example.) ACPICA BZ 1093. 749 750Example Code and Data Size: These are the sizes for the OS-independent 751acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 752debug version of the code includes the debug output trace mechanism and 753has a much larger code and data size. 754 755 Current Release: 756 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 757 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 758 Previous Release: 759 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 760 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 761 762 7632) iASL Compiler/Disassembler and Tools: 764 765Fixed an issue with the recently added local printf implementation, 766concerning width/precision specifiers that could cause incorrect output. 767Lv Zheng. ACPICA BZ 1094. 768 769Disassembler: Added support to detect buffers that contain UUIDs and 770disassemble them to an invocation of the ToUUID operator. Also emit 771commented descriptions of known ACPI-related UUIDs. 772 773AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 774-u. Adds three new files. 775 776iASL: Update table compiler and disassembler for DMAR table changes that 777were introduced in September 2013. With assistance by David Woodhouse. 778 779---------------------------------------- 78027 June 2014. Summary of changes for version 20140627: 781 7821) ACPICA kernel-resident subsystem: 783 784Formatted Output: Implemented local versions of standard formatted output 785utilities such as printf, etc. Over time, it has been discovered that 786there are in fact many portability issues with printf, and the addition 787of this feature will fix/prevent these issues once and for all. Some 788known issues are summarized below: 789 7901) Output of 64-bit values is not portable. For example, UINT64 is %ull 791for the Linux kernel and is %uI64 for some MSVC versions. 7922) Invoking printf consistently in a manner that is portable across both 79332-bit and 64-bit platforms is difficult at best in many situations. 7943) The output format for pointers varies from system to system (leading 795zeros especially), and leads to inconsistent output from ACPICA across 796platforms. 7974) Certain platform-specific printf formats may conflict with ACPICA use. 7985) If there is no local C library available, ACPICA now has local support 799for printf. 800 801-- To address these printf issues in a complete manner, ACPICA now 802directly implements a small subset of printf format specifiers, only 803those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 804 805Implemented support for ACPICA generation within the EFI environment. 806Initially, the AcpiDump utility is supported in the UEFI shell 807environment. Lv Zheng. 808 809Added a new external interface, AcpiLogError, to improve ACPICA 810portability. This allows the host to redirect error messages from the 811ACPICA utilities. Lv Zheng. 812 813Added and deployed new OSL file I/O interfaces to improve ACPICA 814portability: 815 AcpiOsOpenFile 816 AcpiOsCloseFile 817 AcpiOsReadFile 818 AcpiOsWriteFile 819 AcpiOsGetFileOffset 820 AcpiOsSetFileOffset 821There are C library implementations of these functions in the new file 822service_layers/oslibcfs.c -- however, the functions can be implemented by 823the local host in any way necessary. Lv Zheng. 824 825Implemented a mechanism to disable/enable ACPI table checksum validation 826at runtime. This can be useful when loading tables very early during OS 827initialization when it may not be possible to map the entire table in 828order to compute the checksum. Lv Zheng. 829 830Fixed a buffer allocation issue for the Generic Serial Bus support. 831Originally, a fixed buffer length was used. This change allows for 832variable-length buffers based upon the protocol indicated by the field 833access attributes. Reported by Lan Tianyu. Lv Zheng. 834 835Fixed a problem where an object detached from a namespace node was not 836properly terminated/cleared and could cause a circular list problem if 837reattached. ACPICA BZ 1063. David Box. 838 839Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 840 841Fixed a possible memory leak in an error return path within the function 842AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 843 844Example Code and Data Size: These are the sizes for the OS-independent 845acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 846debug version of the code includes the debug output trace mechanism and 847has a much larger code and data size. 848 849 Current Release: 850 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 851 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 852 Previous Release: 853 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 854 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 855 856 8572) iASL Compiler/Disassembler and Tools: 858 859Disassembler: Add dump of ASCII equivalent text within a comment at the 860end of each line of the output for the Buffer() ASL operator. 861 862AcpiDump: Miscellaneous changes: 863 Fixed repetitive table dump in -n mode. 864 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 865the ACPI 2.0 GUID fails. 866 867iASL: Fixed a problem where the compiler could fault if incorrectly given 868an acpidump output file as input. ACPICA BZ 1088. David Box. 869 870AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 871they are invoked without any arguments. 872 873Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 8741086. Colin Ian King. 875 876Disassembler: Cleaned up a block of code that extracts a parent Op 877object. Added a comment that explains that the parent is guaranteed to be 878valid in this case. ACPICA BZ 1069. 879 880---------------------------------------- 88124 April 2014. Summary of changes for version 20140424: 882 8831) ACPICA kernel-resident subsystem: 884 885Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 886Some of these tables are known to contain a trailing NULL entry. Lv 887Zheng. 888 889Removed an extraneous error message for the case where there are a large 890number of system GPEs (> 124). This was the "32-bit FADT register is too 891long to convert to GAS struct" message, which is irrelevant for GPEs 892since the GPEx_BLK_LEN fields of the FADT are always used instead of the 893(limited capacity) GAS bit length. Also, several changes to ensure proper 894support for GPE numbers > 255, where some "GPE number" fields were 8-bits 895internally. 896 897Implemented and deployed additional configuration support for the public 898ACPICA external interfaces. Entire classes of interfaces can now be 899easily modified or configured out, replaced by stubbed inline functions 900by default. Lv Zheng. 901 902Moved all public ACPICA runtime configuration globals to the public 903ACPICA external interface file for convenience. Also, removed some 904obsolete/unused globals. See the file acpixf.h. Lv Zheng. 905 906Documentation: Added a new section to the ACPICA reference describing the 907maximum number of GPEs that can be supported by the FADT-defined GPEs in 908block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 909reference. 910 911Example Code and Data Size: These are the sizes for the OS-independent 912acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 913debug version of the code includes the debug output trace mechanism and 914has a much larger code and data size. 915 916 Current Release: 917 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 918 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 919 Previous Release: 920 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 921 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 922 923 9242) iASL Compiler/Disassembler and Tools: 925 926iASL and disassembler: Add full support for the LPIT table (Low Power 927Idle Table). Includes support in the disassembler, data table compiler, 928and template generator. 929 930AcpiDump utility: 9311) Add option to force the use of the RSDT (over the XSDT). 9322) Improve validation of the RSDP signature (use 8 chars instead of 4). 933 934iASL: Add check for predefined packages that are too large. For 935predefined names that contain subpackages, check if each subpackage is 936too large. (Check for too small already exists.) 937 938Debugger: Updated the GPE command (which simulates a GPE by executing the 939GPE code paths in ACPICA). The GPE device is now optional, and defaults 940to the GPE 0/1 FADT-defined blocks. 941 942Unix application OSL: Update line-editing support. Add additional error 943checking and take care not to reset terminal attributes on exit if they 944were never set. This should help guarantee that the terminal is always 945left in the previous state on program exit. 946 947---------------------------------------- 94825 March 2014. Summary of changes for version 20140325: 949 9501) ACPICA kernel-resident subsystem: 951 952Updated the auto-serialize feature for control methods. This feature 953automatically serializes all methods that create named objects in order 954to prevent runtime errors. The update adds support to ignore the 955currently executing AML SyncLevel when invoking such a method, in order 956to prevent disruption of any existing SyncLevel priorities that may exist 957in the AML code. Although the use of SyncLevels is relatively rare, this 958change fixes a regression where an AE_AML_MUTEX_ORDER exception can 959appear on some machines starting with the 20140214 release. 960 961Added a new external interface to allow the host to install ACPI tables 962very early, before the namespace is even created. AcpiInstallTable gives 963the host additional flexibility for ACPI table management. Tables can be 964installed directly by the host as if they had originally appeared in the 965XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 966(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 967with additional internal restructuring and cleanup. See the ACPICA 968Reference for interface details. Lv Zheng. 969 970Added validation of the checksum for all incoming dynamically loaded 971tables (via external interfaces or via AML Load/LoadTable operators). Lv 972Zheng. 973 974Updated the use of the AcpiOsWaitEventsComplete interface during Notify 975and GPE handler removal. Restructured calls to eliminate possible race 976conditions. Lv Zheng. 977 978Added a warning for the use/execution of the ASL/AML Unload (table) 979operator. This will help detect and identify machines that use this 980operator if and when it is ever used. This operator has never been seen 981in the field and the usage model and possible side-effects of the drastic 982runtime action of a full table removal are unknown. 983 984Reverted the use of #pragma push/pop which was introduced in the 20140214 985release. It appears that push and pop are not implemented by enough 986compilers to make the use of this feature feasible for ACPICA at this 987time. However, these operators may be deployed in a future ACPICA 988release. 989 990Added the missing EXPORT_SYMBOL macros for the install and remove SCI 991handler interfaces. 992 993Source code generation: 9941) Disabled the use of the "strchr" macro for the gcc-specific 995generation. For some versions of gcc, this macro can periodically expose 996a compiler bug which in turn causes compile-time error(s). 9972) Added support for PPC64 compilation. Colin Ian King. 998 999Example Code and Data Size: These are the sizes for the OS-independent 1000acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1001debug version of the code includes the debug output trace mechanism and 1002has a much larger code and data size. 1003 1004 Current Release: 1005 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1006 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1007 Previous Release: 1008 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1009 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1010 1011 10122) iASL Compiler/Disassembler and Tools: 1013 1014Disassembler: Added several new features to improve the readability of 1015the resulting ASL code. Extra information is emitted within comment 1016fields in the ASL code: 10171) Known _HID/_CID values are decoded to descriptive text. 10182) Standard values for the Notify() operator are decoded to descriptive 1019text. 10203) Target operands are expanded to full pathnames (in a comment) when 1021possible. 1022 1023Disassembler: Miscellaneous updates for extern() handling: 10241) Abort compiler if file specified by -fe option does not exist. 10252) Silence unnecessary warnings about argument count mismatches. 10263) Update warning messages concerning unresolved method externals. 10274) Emit "UnknownObj" keyword for externals whose type cannot be 1028determined. 1029 1030AcpiHelp utility: 10311) Added the -a option to display both the ASL syntax and the AML 1032encoding for an input ASL operator. This effectively displays all known 1033information about an ASL operator with one AcpiHelp invocation. 10342) Added substring match support (similar to a wildcard) for the -i 1035(_HID/PNP IDs) option. 1036 1037iASL/Disassembler: Since this tool does not yet support execution on big- 1038endian machines, added detection of endianness and an error message if 1039execution is attempted on big-endian. Support for big-endian within iASL 1040is a feature that is on the ACPICA to-be-done list. 1041 1042AcpiBin utility: 10431) Remove option to extract binary files from an acpidump; this function 1044is made obsolete by the AcpiXtract utility. 10452) General cleanup of open files and allocated buffers. 1046 1047---------------------------------------- 104814 February 2014. Summary of changes for version 20140214: 1049 10501) ACPICA kernel-resident subsystem: 1051 1052Implemented a new mechanism to proactively prevent problems with ill- 1053behaved reentrant control methods that create named ACPI objects. This 1054behavior is illegal as per the ACPI specification, but is nonetheless 1055frequently seen in the field. Previously, this could lead to an 1056AE_ALREADY_EXISTS exception if the method was actually entered by more 1057than one thread. This new mechanism detects such methods at table load 1058time and marks them "serialized" to prevent reentrancy. A new global 1059option, AcpiGbl_AutoSerializeMethods, has been added to disable this 1060feature if desired. This mechanism and global option obsoletes and 1061supersedes the previous AcpiGbl_SerializeAllMethods option. 1062 1063Added the "Windows 2013" string to the _OSI support. ACPICA will now 1064respond TRUE to _OSI queries with this string. It is the stated policy of 1065ACPICA to add new strings to the _OSI support as soon as possible after 1066they are defined. See the full ACPICA _OSI policy which has been added to 1067the utilities/utosi.c file. 1068 1069Hardened/updated the _PRT return value auto-repair code: 10701) Do not abort the repair on a single subpackage failure, continue to 1071check all subpackages. 10722) Add check for the minimum subpackage length (4). 10733) Properly handle extraneous NULL package elements. 1074 1075Added support to avoid the possibility of infinite loops when traversing 1076object linked lists. Never allow an infinite loop, even in the face of 1077corrupted object lists. 1078 1079ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 1080pack(pop) directives to ensure that the ACPICA headers are independent of 1081compiler settings or other host headers. 1082 1083Example Code and Data Size: These are the sizes for the OS-independent 1084acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1085debug version of the code includes the debug output trace mechanism and 1086has a much larger code and data size. 1087 1088 Current Release: 1089 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1090 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1091 Previous Release: 1092 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1093 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1094 1095 10962) iASL Compiler/Disassembler and Tools: 1097 1098iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 1099first reserved field was incorrectly forced to have a value of zero. This 1100change correctly forces the field to have a value of one. ACPICA BZ 1081. 1101 1102Debugger: Added missing support for the "Extra" and "Data" subobjects 1103when displaying object data. 1104 1105Debugger: Added support to display entire object linked lists when 1106displaying object data. 1107 1108iASL: Removed the obsolete -g option to obtain ACPI tables from the 1109Windows registry. This feature has been superseded by the acpidump 1110utility. 1111 1112---------------------------------------- 111314 January 2014. Summary of changes for version 20140114: 1114 11151) ACPICA kernel-resident subsystem: 1116 1117Updated all ACPICA copyrights and signons to 2014. Added the 2014 1118copyright to all module headers and signons, including the standard Linux 1119header. This affects virtually every file in the ACPICA core subsystem, 1120iASL compiler, all ACPICA utilities, and the test suites. 1121 1122Improved parameter validation for AcpiInstallGpeBlock. Added the 1123following checks: 11241) The incoming device handle refers to type ACPI_TYPE_DEVICE. 11252) There is not already a GPE block attached to the device. 1126Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 1127device. 1128 1129Correctly support "references" in the ACPI_OBJECT. This change fixes the 1130support to allow references (namespace nodes) to be passed as arguments 1131to control methods via the evaluate object interface. This is probably 1132most useful for testing purposes, however. 1133 1134Improved support for 32/64 bit physical addresses in printf()-like 1135output. This change improves the support for physical addresses in printf 1136debug statements and other output on both 32-bit and 64-bit hosts. It 1137consistently outputs the appropriate number of bytes for each host. The 1138%p specifier is unsatisfactory since it does not emit uniform output on 1139all hosts/clib implementations (on some, leading zeros are not supported, 1140leading to difficult-to-read output). 1141 1142Example Code and Data Size: These are the sizes for the OS-independent 1143acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1144debug version of the code includes the debug output trace mechanism and 1145has a much larger code and data size. 1146 1147 Current Release: 1148 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1149 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1150 Previous Release: 1151 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1152 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1153 1154 11552) iASL Compiler/Disassembler and Tools: 1156 1157iASL: Fix a possible fault when using the Connection() operator. Fixes a 1158problem if the parent Field definition for the Connection operator refers 1159to an operation region that does not exist. ACPICA BZ 1064. 1160 1161AcpiExec: Load of local test tables is now optional. The utility has the 1162capability to load some various tables to test features of ACPICA. 1163However, there are enough of them that the output of the utility became 1164confusing. With this change, only the required local tables are displayed 1165(RSDP, XSDT, etc.) along with the actual tables loaded via the command 1166line specification. This makes the default output simler and easier to 1167understand. The -el command line option restores the original behavior 1168for testing purposes. 1169 1170AcpiExec: Added support for overlapping operation regions. This change 1171expands the simulation of operation regions by supporting regions that 1172overlap within the given address space. Supports SystemMemory and 1173SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 1174 1175AcpiExec: Added region handler support for PCI_Config and EC spaces. This 1176allows AcpiExec to simulate these address spaces, similar to the current 1177support for SystemMemory and SystemIO. 1178 1179Debugger: Added new command to read/write/compare all namespace objects. 1180The command "test objects" will exercise the entire namespace by writing 1181new values to each data object, and ensuring that the write was 1182successful. The original value is then restored and verified. 1183 1184Debugger: Added the "test predefined" command. This change makes this 1185test public and puts it under the new "test" command. The test executes 1186each and every predefined name within the current namespace. 1187 1188---------------------------------------- 118918 December 2013. Summary of changes for version 20131218: 1190 1191Global note: The ACPI 5.0A specification was released this month. There 1192are no changes needed for ACPICA since this release of ACPI is an 1193errata/clarification release. The specification is available at 1194acpi.info. 1195 1196 11971) ACPICA kernel-resident subsystem: 1198 1199Added validation of the XSDT root table if it is present. Some older 1200platforms contain an XSDT that is ill-formed or otherwise invalid (such 1201as containing some or all entries that are NULL pointers). This change 1202adds a new function to validate the XSDT before actually using it. If the 1203XSDT is found to be invalid, ACPICA will now automatically fall back to 1204using the RSDT instead. Original implementation by Zhao Yakui. Ported to 1205ACPICA and enhanced by Lv Zheng and Bob Moore. 1206 1207Added a runtime option to ignore the XSDT and force the use of the RSDT. 1208This change adds a runtime option that will force ACPICA to use the RSDT 1209instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 1210requires that an XSDT be used instead of the RSDT, the XSDT has been 1211found to be corrupt or ill-formed on some machines. Lv Zheng. 1212 1213Added a runtime option to favor 32-bit FADT register addresses over the 121464-bit addresses. This change adds an option to favor 32-bit FADT 1215addresses when there is a conflict between the 32-bit and 64-bit versions 1216of the same register. The default behavior is to use the 64-bit version 1217in accordance with the ACPI specification. This can now be overridden via 1218the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 1219 1220During the change above, the internal "Convert FADT" and "Verify FADT" 1221functions have been merged to simplify the code, making it easier to 1222understand and maintain. ACPICA BZ 933. 1223 1224Improve exception reporting and handling for GPE block installation. 1225Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 1226status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 1227 1228Added helper macros to extract bus/segment numbers from the HEST table. 1229This change adds two macros to extract the encoded bus and segment 1230numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 1231Betty Dall <betty.dall@hp.com> 1232 1233Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 1234by ACPICA. It is not a public macro, so it should have no effect on 1235existing OSV code. Lv Zheng. 1236 1237Example Code and Data Size: These are the sizes for the OS-independent 1238acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1239debug version of the code includes the debug output trace mechanism and 1240has a much larger code and data size. 1241 1242 Current Release: 1243 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1244 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1245 Previous Release: 1246 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1247 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1248 1249 12502) iASL Compiler/Disassembler and Tools: 1251 1252Disassembler: Improved pathname support for emitted External() 1253statements. This change adds full pathname support for external names 1254that have been resolved internally by the inclusion of additional ACPI 1255tables (via the iASL -e option). Without this change, the disassembler 1256can emit multiple externals for the same object, or it become confused 1257when the Scope() operator is used on an external object. Overall, greatly 1258improves the ability to actually recompile the emitted ASL code when 1259objects a referenced across multiple ACPI tables. Reported by Michael 1260Tsirkin (mst@redhat.com). 1261 1262Tests/ASLTS: Updated functional control suite to execute with no errors. 1263David Box. Fixed several errors related to the testing of the interpreter 1264slack mode. Lv Zheng. 1265 1266iASL: Added support to detect names that are declared within a control 1267method, but are unused (these are temporary names that are only valid 1268during the time the method is executing). A remark is issued for these 1269cases. ACPICA BZ 1022. 1270 1271iASL: Added full support for the DBG2 table. Adds full disassembler, 1272table compiler, and template generator support for the DBG2 table (Debug 1273Port 2 table). 1274 1275iASL: Added full support for the PCCT table, update the table definition. 1276Updates the PCCT table definition in the actbl3.h header and adds table 1277compiler and template generator support. 1278 1279iASL: Added an option to emit only error messages (no warnings/remarks). 1280The -ve option will enable only error messages, warnings and remarks are 1281suppressed. This can simplify debugging when only the errors are 1282important, such as when an ACPI table is disassembled and there are many 1283warnings and remarks -- but only the actual errors are of real interest. 1284 1285Example ACPICA code (source/tools/examples): Updated the example code so 1286that it builds to an actual working program, not just example code. Added 1287ACPI tables and execution of an example control method in the DSDT. Added 1288makefile support for Unix generation. 1289 1290---------------------------------------- 129115 November 2013. Summary of changes for version 20131115: 1292 1293This release is available at https://acpica.org/downloads 1294 1295 12961) ACPICA kernel-resident subsystem: 1297 1298Resource Manager: Fixed loop termination for the "get AML length" 1299function. The loop previously had an error termination on a NULL resource 1300pointer, which can never happen since the loop simply increments a valid 1301resource pointer. This fix changes the loop to terminate with an error on 1302an invalid end-of-buffer condition. The problem can be seen as an 1303infinite loop by callers to AcpiSetCurrentResources with an invalid or 1304corrupted resource descriptor, or a resource descriptor that is missing 1305an END_TAG descriptor. Reported by Dan Carpenter 1306<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 1307 1308Table unload and ACPICA termination: Delete all attached data objects 1309during namespace node deletion. This fix updates namespace node deletion 1310to delete the entire list of attached objects (attached via 1311AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 13121024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 1313 1314ACPICA termination: Added support to delete all objects attached to the 1315root namespace node. This fix deletes any and all objects that have been 1316attached to the root node via AcpiAttachData. Previously, none of these 1317objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 1318 1319Debug output: Do not emit the function nesting level for the in-kernel 1320build. The nesting level is really only useful during a single-thread 1321execution. Therefore, only enable this output for the AcpiExec utility. 1322Also, only emit the thread ID when executing under AcpiExec (Context 1323switches are still always detected and a message is emitted). ACPICA BZ 1324972. 1325 1326Example Code and Data Size: These are the sizes for the OS-independent 1327acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1328debug version of the code includes the debug output trace mechanism and 1329has a much larger code and data size. 1330 1331 Current Release: 1332 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1333 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1334 Previous Release: 1335 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1336 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1337 1338 13392) iASL Compiler/Disassembler and Tools: 1340 1341AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 1342correct portable POSIX header for terminal control functions. 1343 1344Disassembler: Fixed control method invocation issues related to the use 1345of the CondRefOf() operator. The problem is seen in the disassembly where 1346control method invocations may not be disassembled properly if the 1347control method name has been used previously as an argument to CondRefOf. 1348The solution is to not attempt to emit an external declaration for the 1349CondRefOf target (it is not necessary in the first place). This prevents 1350disassembler object type confusion. ACPICA BZ 988. 1351 1352Unix Makefiles: Added an option to disable compiler optimizations and the 1353_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 1354with optimizations (reportedly, gcc 4.4 for example). This change adds a 1355command line option for make (NOOPT) that disables all compiler 1356optimizations and the _FORTIFY_SOURCE compiler flag. The default 1357optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 13581034. Lv Zheng, Bob Moore. 1359 1360Tests/ASLTS: Added options to specify individual test cases and modes. 1361This allows testers running aslts.sh to optionally specify individual 1362test modes and test cases. Also added an option to disable the forced 1363generation of the ACPICA tools from source if desired. Lv Zheng. 1364 1365---------------------------------------- 136627 September 2013. Summary of changes for version 20130927: 1367 1368This release is available at https://acpica.org/downloads 1369 1370 13711) ACPICA kernel-resident subsystem: 1372 1373Fixed a problem with store operations to reference objects. This change 1374fixes a problem where a Store operation to an ArgX object that contained 1375a 1376reference to a field object did not complete the automatic dereference 1377and 1378then write to the actual field object. Instead, the object type of the 1379field object was inadvertently changed to match the type of the source 1380operand. The new behavior will actually write to the field object (buffer 1381field or field unit), thus matching the correct ACPI-defined behavior. 1382 1383Implemented support to allow the host to redefine individual OSL 1384prototypes. This change enables the host to redefine OSL prototypes found 1385in the acpiosxf.h file. This allows the host to implement OSL interfaces 1386with a macro or inlined function. Further, it allows the host to add any 1387additional required modifiers such as __iomem, __init, __exit, etc., as 1388necessary on a per-interface basis. Enables maximum flexibility for the 1389OSL interfaces. Lv Zheng. 1390 1391Hardcoded the access width for the FADT-defined reset register. The ACPI 1392specification requires the reset register width to be 8 bits. ACPICA now 1393hardcodes the width to 8 and ignores the FADT width value. This provides 1394compatibility with other ACPI implementations that have allowed BIOS code 1395with bad register width values to go unnoticed. Matthew Garett, Bob 1396Moore, 1397Lv Zheng. 1398 1399Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 1400used 1401in the OSL header (acpiosxf). The change modifies the position of this 1402macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 1403build issues if the OSL defines the implementation of the interface to be 1404an inline stub function. Lv Zheng. 1405 1406Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 1407initialization interfaces. This change adds a new macro for the main init 1408and terminate external interfaces in order to support hosts that require 1409additional or different processing for these functions. Changed from 1410ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 1411Zheng, Bob Moore. 1412 1413Cleaned up the memory allocation macros for configurability. In the 1414common 1415case, the ACPI_ALLOCATE and related macros now resolve directly to their 1416respective AcpiOs* OSL interfaces. Two options: 14171) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 1418default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 14192) For AcpiExec (and for debugging), the macros can optionally be 1420resolved 1421to the local ACPICA interfaces that track each allocation (local tracking 1422is used to immediately detect memory leaks). 1423Lv Zheng. 1424 1425Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 1426to predefine this macro to either TRUE or FALSE during the system build. 1427 1428Replaced __FUNCTION_ with __func__ in the gcc-specific header. 1429 1430Example Code and Data Size: These are the sizes for the OS-independent 1431acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1432debug version of the code includes the debug output trace mechanism and 1433has a much larger code and data size. 1434 1435 Current Release: 1436 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1437 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1438 Previous Release: 1439 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1440 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1441 1442 14432) iASL Compiler/Disassembler and Tools: 1444 1445iASL: Implemented wildcard support for the -e option. This simplifies use 1446when there are many SSDTs that must be included to resolve external 1447method 1448declarations. ACPICA BZ 1041. Example: 1449 iasl -e ssdt*.dat -d dsdt.dat 1450 1451AcpiExec: Add history/line-editing for Unix/Linux systems. This change 1452adds a portable module that implements full history and limited line 1453editing for Unix and Linux systems. It does not use readline() due to 1454portability issues. Instead it uses the POSIX termio interface to put the 1455terminal in raw input mode so that the various special keys can be 1456trapped 1457(such as up/down-arrow for history support and left/right-arrow for line 1458editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 1459 1460AcpiXtract: Add support to handle (ignore) "empty" lines containing only 1461one or more spaces. This provides compatible with early or different 1462versions of the AcpiDump utility. ACPICA BZ 1044. 1463 1464AcpiDump: Do not ignore tables that contain only an ACPI table header. 1465Apparently, some BIOSs create SSDTs that contain an ACPI table header but 1466no other data. This change adds support to dump these tables. Any tables 1467shorter than the length of an ACPI table header remain in error (an error 1468message is emitted). Reported by Yi Li. 1469 1470Debugger: Echo actual command along with the "unknown command" message. 1471 1472---------------------------------------- 147323 August 2013. Summary of changes for version 20130823: 1474 14751) ACPICA kernel-resident subsystem: 1476 1477Implemented support for host-installed System Control Interrupt (SCI) 1478handlers. Certain ACPI functionality requires the host to handle raw 1479SCIs. For example, the "SCI Doorbell" that is defined for memory power 1480state support requires the host device driver to handle SCIs to examine 1481if the doorbell has been activated. Multiple SCI handlers can be 1482installed to allow for future expansion. New external interfaces are 1483AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 1484details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 1485 1486Operation region support: Never locally free the handler "context" 1487pointer. This change removes some dangerous code that attempts to free 1488the handler context pointer in some (rare) circumstances. The owner of 1489the handler owns this pointer and the ACPICA code should never touch it. 1490Although not seen to be an issue in any kernel, it did show up as a 1491problem (fault) under AcpiExec. Also, set the internal storage field for 1492the context pointer to zero when the region is deactivated, simply for 1493sanity. David Box. ACPICA BZ 1039. 1494 1495AcpiRead: On error, do not modify the return value target location. If an 1496error happens in the middle of a split 32/32 64-bit I/O operation, do not 1497modify the target of the return value pointer. Makes the code consistent 1498with the rest of ACPICA. Bjorn Helgaas. 1499 1500Example Code and Data Size: These are the sizes for the OS-independent 1501acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1502debug version of the code includes the debug output trace mechanism and 1503has a much larger code and data size. 1504 1505 Current Release: 1506 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1507 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1508 Previous Release: 1509 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1510 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 1511 1512 15132) iASL Compiler/Disassembler and Tools: 1514 1515AcpiDump: Implemented several new features and fixed some problems: 15161) Added support to dump the RSDP, RSDT, and XSDT tables. 15172) Added support for multiple table instances (SSDT, UEFI). 15183) Added option to dump "customized" (overridden) tables (-c). 15194) Fixed a problem where some table filenames were improperly 1520constructed. 15215) Improved some error messages, removed some unnecessary messages. 1522 1523iASL: Implemented additional support for disassembly of ACPI tables that 1524contain invocations of external control methods. The -fe<file> option 1525allows the import of a file that specifies the external methods along 1526with the required number of arguments for each -- allowing for the 1527correct disassembly of the table. This is a workaround for a limitation 1528of AML code where the disassembler often cannot determine the number of 1529arguments required for an external control method and generates incorrect 1530ASL code. See the iASL reference for details. ACPICA BZ 1030. 1531 1532Debugger: Implemented a new command (paths) that displays the full 1533pathnames (namepaths) and object types of all objects in the namespace. 1534This is an alternative to the namespace command. 1535 1536Debugger: Implemented a new command (sci) that invokes the SCI dispatch 1537mechanism and any installed handlers. 1538 1539iASL: Fixed a possible segfault for "too many parent prefixes" condition. 1540This can occur if there are too many parent prefixes in a namepath (for 1541example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 1542 1543Application OSLs: Set the return value for the PCI read functions. These 1544functions simply return AE_OK, but should set the return value to zero 1545also. This change implements this. ACPICA BZ 1038. 1546 1547Debugger: Prevent possible command line buffer overflow. Increase the 1548size of a couple of the debugger line buffers, and ensure that overflow 1549cannot happen. ACPICA BZ 1037. 1550 1551iASL: Changed to abort immediately on serious errors during the parsing 1552phase. Due to the nature of ASL, there is no point in attempting to 1553compile these types of errors, and they typically end up causing a 1554cascade of hundreds of errors which obscure the original problem. 1555 1556---------------------------------------- 155725 July 2013. Summary of changes for version 20130725: 1558 15591) ACPICA kernel-resident subsystem: 1560 1561Fixed a problem with the DerefOf operator where references to FieldUnits 1562and BufferFields incorrectly returned the parent object, not the actual 1563value of the object. After this change, a dereference of a FieldUnit 1564reference results in a read operation on the field to get the value, and 1565likewise, the appropriate BufferField value is extracted from the target 1566buffer. 1567 1568Fixed a problem where the _WAK method could cause a fault under these 1569circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 1570method returned no value. The problem is rarely seen because most kernels 1571run ACPICA in slack mode. 1572 1573For the DerefOf operator, a fatal error now results if an attempt is made 1574to dereference a reference (created by the Index operator) to a NULL 1575package element. Provides compatibility with other ACPI implementations, 1576and this behavior will be added to a future version of the ACPI 1577specification. 1578 1579The ACPI Power Management Timer (defined in the FADT) is now optional. 1580This provides compatibility with other ACPI implementations and will 1581appear in the next version of the ACPI specification. If there is no PM 1582Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 1583zero in the FADT indicates no PM timer. 1584 1585Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 1586allows the host to globally enable/disable all vendor strings, all 1587feature strings, or both. Intended to be primarily used for debugging 1588purposes only. Lv Zheng. 1589 1590Expose the collected _OSI data to the host via a global variable. This 1591data tracks the highest level vendor ID that has been invoked by the BIOS 1592so that the host (and potentially ACPICA itself) can change behaviors 1593based upon the age of the BIOS. 1594 1595Example Code and Data Size: These are the sizes for the OS-independent 1596acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1597debug version of the code includes the debug output trace mechanism and 1598has a much larger code and data size. 1599 1600 Current Release: 1601 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1602 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1603 Previous Release: 1604 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1605 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1606 1607 16082) iASL Compiler/Disassembler and Tools: 1609 1610iASL: Created the following enhancements for the -so option (create 1611offset table): 16121)Add offsets for the last nameseg in each namepath for every supported 1613object type 16142)Add support for Processor, Device, Thermal Zone, and Scope objects 16153)Add the actual AML opcode for the parent object of every supported 1616object type 16174)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 1618 1619Disassembler: Emit all unresolved external symbols in a single block. 1620These are external references to control methods that could not be 1621resolved, and thus, the disassembler had to make a guess at the number of 1622arguments to parse. 1623 1624iASL: The argument to the -T option (create table template) is now 1625optional. If not specified, the default table is a DSDT, typically the 1626most common case. 1627 1628---------------------------------------- 162926 June 2013. Summary of changes for version 20130626: 1630 16311) ACPICA kernel-resident subsystem: 1632 1633Fixed an issue with runtime repair of the _CST object. Null or invalid 1634elements were not always removed properly. Lv Zheng. 1635 1636Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 1637FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 1638the maximum number of GPEs is 1016. Use of multiple GPE block devices 1639makes the system-wide number of GPEs essentially unlimited. 1640 1641Example Code and Data Size: These are the sizes for the OS-independent 1642acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1643debug version of the code includes the debug output trace mechanism and 1644has a much larger code and data size. 1645 1646 Current Release: 1647 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1648 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1649 Previous Release: 1650 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1651 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1652 1653 16542) iASL Compiler/Disassembler and Tools: 1655 1656Portable AcpiDump: Implemented full support for the Linux and FreeBSD 1657hosts. Now supports Linux, FreeBSD, and Windows. 1658 1659Disassembler: Added some missing types for the HEST and EINJ tables: "Set 1660Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 1661 1662iASL/Preprocessor: Implemented full support for nested 1663#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 1664 1665Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 1666max. The original purpose of this constraint was to limit the amount of 1667debug output. However, the string function in question (UtPrintString) is 1668now used for the disassembler also, where 256 bytes is insufficient. 1669Reported by RehabMan@GitHub. 1670 1671iASL/DataTables: Fixed some problems and issues with compilation of DMAR 1672tables. ACPICA BZ 999. Lv Zheng. 1673 1674iASL: Fixed a couple of error exit issues that could result in a "Could 1675not delete <file>" message during ASL compilation. 1676 1677AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 1678the actual signatures for these tables are "FACP" and "APIC", 1679respectively. 1680 1681AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 1682tables are allowed to have multiple instances. 1683 1684---------------------------------------- 168517 May 2013. Summary of changes for version 20130517: 1686 16871) ACPICA kernel-resident subsystem: 1688 1689Fixed a regression introduced in version 20130328 for _INI methods. This 1690change fixes a problem introduced in 20130328 where _INI methods are no 1691longer executed properly because of a memory block that was not 1692initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 1693<tomasz.nowicki@linaro.org>. 1694 1695Fixed a possible problem with the new extended sleep registers in the 1696ACPI 16975.0 FADT. Do not use these registers (even if populated) unless the HW- 1698reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 16991020. Lv Zheng. 1700 1701Implemented return value repair code for _CST predefined objects: Sort 1702the 1703list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 1704 1705Implemented a debug-only option to disable loading of SSDTs from the 1706RSDT/XSDT during ACPICA initialization. This can be useful for debugging 1707ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 1708acglobal.h - ACPICA BZ 1005. Lv Zheng. 1709 1710Fixed some issues in the ACPICA initialization and termination code: 1711Tomasz Nowicki <tomasz.nowicki@linaro.org> 17121) Clear events initialized flag upon event component termination. ACPICA 1713BZ 1013. 17142) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 17153) Delete global lock pending lock during termination. ACPICA BZ 1012. 17164) Clear debug buffer global on termination to prevent possible multiple 1717delete. ACPICA BZ 1010. 1718 1719Standardized all switch() blocks across the entire source base. After 1720many 1721years, different formatting for switch() had crept in. This change makes 1722the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 1723 1724Split some files to enhance ACPICA modularity and configurability: 17251) Split buffer dump routines into utilities/utbuffer.c 17262) Split internal error message routines into utilities/uterror.c 17273) Split table print utilities into tables/tbprint.c 17284) Split iASL command-line option processing into asloptions.c 1729 1730Makefile enhancements: 17311) Support for all new files above. 17322) Abort make on errors from any subcomponent. Chao Guan. 17333) Add build support for Apple Mac OS X. Liang Qi. 1734 1735Example Code and Data Size: These are the sizes for the OS-independent 1736acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1737debug version of the code includes the debug output trace mechanism and 1738has a much larger code and data size. 1739 1740 Current Release: 1741 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1742 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1743 Previous Release: 1744 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1745 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1746 1747 17482) iASL Compiler/Disassembler and Tools: 1749 1750New utility: Implemented an easily portable version of the acpidump 1751utility to extract ACPI tables from the system (or a file) in an ASCII 1752hex 1753dump format. The top-level code implements the various command line 1754options, file I/O, and table dump routines. To port to a new host, only 1755three functions need to be implemented to get tables -- since this 1756functionality is OS-dependent. See the tools/acpidump/apmain.c module and 1757the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 17581) The Windows version obtains the ACPI tables from the Registry. 17592) The Linux version is under development. 17603) Other hosts - If an OS-dependent module is submitted, it will be 1761distributed with ACPICA. 1762 1763iASL: Fixed a regression for -D preprocessor option (define symbol). A 1764restructuring/change to the initialization sequence caused this option to 1765no longer work properly. 1766 1767iASL: Implemented a mechanism to disable specific warnings and remarks. 1768Adds a new command line option, "-vw <messageid> as well as "#pragma 1769disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 1770 1771iASL: Fix for too-strict package object validation. The package object 1772validation for return values from the predefined names is a bit too 1773strict, it does not allow names references within the package (which will 1774be resolved at runtime.) These types of references cannot be validated at 1775compile time. This change ignores named references within package objects 1776for names that return or define static packages. 1777 1778Debugger: Fixed the 80-character command line limitation for the History 1779command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 1780 1781iASL: Added control method and package support for the -so option 1782(generates AML offset table for BIOS support.) 1783 1784iASL: issue a remark if a non-serialized method creates named objects. If 1785a thread blocks within the method for any reason, and another thread 1786enters the method, the method will fail because an attempt will be made 1787to 1788create the same (named) object twice. In this case, issue a remark that 1789the method should be marked serialized. NOTE: may become a warning later. 1790ACPICA BZ 909. 1791 1792---------------------------------------- 179318 April 2013. Summary of changes for version 20130418: 1794 17951) ACPICA kernel-resident subsystem: 1796 1797Fixed a possible buffer overrun during some rare but specific field unit 1798read operations. This overrun can only happen if the DSDT version is 1 -- 1799meaning that all AML integers are 32 bits -- and the field length is 1800between 33 and 55 bits long. During the read, an internal buffer object 1801is 1802created for the field unit because the field is larger than an integer 1803(32 1804bits). However, in this case, the buffer will be incorrectly written 1805beyond the end because the buffer length is less than the internal 1806minimum 1807of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 1808long, but a full 8 bytes will be written. 1809 1810Updated the Embedded Controller "orphan" _REG method support. This refers 1811to _REG methods under the EC device that have no corresponding operation 1812region. This is allowed by the ACPI specification. This update removes a 1813dependency on the existence an ECDT table. It will execute an orphan _REG 1814method as long as the operation region handler for the EC is installed at 1815the EC device node and not the namespace root. Rui Zhang (original 1816update), Bob Moore (update/integrate). 1817 1818Implemented run-time argument typechecking for all predefined ACPI names 1819(_STA, _BIF, etc.) This change performs object typechecking on all 1820incoming arguments for all predefined names executed via 1821AcpiEvaluateObject. This ensures that ACPI-related device drivers are 1822passing correct object types as well as the correct number of arguments 1823(therefore identifying any issues immediately). Also, the ASL/namespace 1824definition of the predefined name is checked against the ACPI 1825specification for the proper argument count. Adds one new file, 1826nsarguments.c 1827 1828Changed an exception code for the ASL UnLoad() operator. Changed the 1829exception code for the case where the input DdbHandle is invalid, from 1830AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 1831 1832Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 1833global makefile. The use of this flag causes compiler errors on earlier 1834versions of GCC, so it has been removed for compatibility. 1835 1836Miscellaneous cleanup: 18371) Removed some unused/obsolete macros 18382) Fixed a possible memory leak in the _OSI support 18393) Removed an unused variable in the predefined name support 18404) Windows OSL: remove obsolete reference to a memory list field 1841 1842Example Code and Data Size: These are the sizes for the OS-independent 1843acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1844debug version of the code includes the debug output trace mechanism and 1845has a much larger code and data size. 1846 1847 Current Release: 1848 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1849 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1850 Previous Release: 1851 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1852 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1853 1854 18552) iASL Compiler/Disassembler and Tools: 1856 1857AcpiExec: Added installation of a handler for the SystemCMOS address 1858space. This prevents control method abort if a method accesses this 1859space. 1860 1861AcpiExec: Added support for multiple EC devices, and now install EC 1862operation region handler(s) at the actual EC device instead of the 1863namespace root. This reflects the typical behavior of host operating 1864systems. 1865 1866AcpiExec: Updated to ensure that all operation region handlers are 1867installed before the _REG methods are executed. This prevents a _REG 1868method from aborting if it accesses an address space has no handler. 1869AcpiExec installs a handler for every possible address space. 1870 1871Debugger: Enhanced the "handlers" command to display non-root handlers. 1872This change enhances the handlers command to display handlers associated 1873with individual devices throughout the namespace, in addition to the 1874currently supported display of handlers associated with the root 1875namespace 1876node. 1877 1878ASL Test Suite: Several test suite errors have been identified and 1879resolved, reducing the total error count during execution. Chao Guan. 1880 1881---------------------------------------- 188228 March 2013. Summary of changes for version 20130328: 1883 18841) ACPICA kernel-resident subsystem: 1885 1886Fixed several possible race conditions with the internal object reference 1887counting mechanism. Some of the external ACPICA interfaces update object 1888reference counts without holding the interpreter or namespace lock. This 1889change adds a spinlock to protect reference count updates on the internal 1890ACPICA objects. Reported by and with assistance from Andriy Gapon 1891(avg@FreeBSD.org). 1892 1893FADT support: Removed an extraneous warning for very large GPE register 1894sets. This change removes a size mismatch warning if the legacy length 1895field for a GPE register set is larger than the 64-bit GAS structure can 1896accommodate. GPE register sets can be larger than the 255-bit width 1897limitation of the GAS structure. Linn Crosetto (linn@hp.com). 1898 1899_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 1900return from this interface. Handles a possible timeout case if 1901ACPI_WAIT_FOREVER is modified by the host to be a value less than 1902"forever". Jung-uk Kim. 1903 1904Predefined name support: Add allowed/required argument type information 1905to 1906the master predefined info table. This change adds the infrastructure to 1907enable typechecking on incoming arguments for all predefined 1908methods/objects. It does not actually contain the code that will fully 1909utilize this information, this is still under development. Also condenses 1910some duplicate code for the predefined names into a new module, 1911utilities/utpredef.c 1912 1913Example Code and Data Size: These are the sizes for the OS-independent 1914acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1915debug version of the code includes the debug output trace mechanism and 1916has a much larger code and data size. 1917 1918 Previous Release: 1919 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1920 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1921 Current Release: 1922 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1923 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1924 1925 19262) iASL Compiler/Disassembler and Tools: 1927 1928iASL: Implemented a new option to simplify the development of ACPI- 1929related 1930BIOS code. Adds support for a new "offset table" output file. The -so 1931option will create a C table containing the AML table offsets of various 1932named objects in the namespace so that BIOS code can modify them easily 1933at 1934boot time. This can simplify BIOS runtime code by eliminating expensive 1935searches for "magic values", enhancing boot times and adding greater 1936reliability. With assistance from Lee Hamel. 1937 1938iASL: Allow additional predefined names to return zero-length packages. 1939Now, all predefined names that are defined by the ACPI specification to 1940return a "variable-length package of packages" are allowed to return a 1941zero length top-level package. This allows the BIOS to tell the host that 1942the requested feature is not supported, and supports existing BIOS/ASL 1943code and practices. 1944 1945iASL: Changed the "result not used" warning to an error. This is the case 1946where an ASL operator is effectively a NOOP because the result of the 1947operation is not stored anywhere. For example: 1948 Add (4, Local0) 1949There is no target (missing 3rd argument), nor is the function return 1950value used. This is potentially a very serious problem -- since the code 1951was probably intended to do something, but for whatever reason, the value 1952was not stored. Therefore, this issue has been upgraded from a warning to 1953an error. 1954 1955AcpiHelp: Added allowable/required argument types to the predefined names 1956info display. This feature utilizes the recent update to the predefined 1957names table (above). 1958 1959---------------------------------------- 196014 February 2013. Summary of changes for version 20130214: 1961 19621) ACPICA Kernel-resident Subsystem: 1963 1964Fixed a possible regression on some hosts: Reinstated the safe return 1965macros (return_ACPI_STATUS, etc.) that ensure that the argument is 1966evaluated only once. Although these macros are not needed for the ACPICA 1967code itself, they are often used by ACPI-related host device drivers 1968where 1969the safe feature may be necessary. 1970 1971Fixed several issues related to the ACPI 5.0 reduced hardware support 1972(SOC): Now ensure that if the platform declares itself as hardware- 1973reduced 1974via the FADT, the following functions become NOOPs (and always return 1975AE_OK) because ACPI is always enabled by definition on these machines: 1976 AcpiEnable 1977 AcpiDisable 1978 AcpiHwGetMode 1979 AcpiHwSetMode 1980 1981Dynamic Object Repair: Implemented additional runtime repairs for 1982predefined name return values. Both of these repairs can simplify code in 1983the related device drivers that invoke these methods: 19841) For the _STR and _MLS names, automatically repair/convert an ASCII 1985string to a Unicode buffer. 19862) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 1987a 1988lone end tag descriptor in the following cases: A Return(0) was executed, 1989a null buffer was returned, or no object at all was returned (non-slack 1990mode only). Adds a new file, nsconvert.c 1991ACPICA BZ 998. Bob Moore, Lv Zheng. 1992 1993Resource Manager: Added additional code to prevent possible infinite 1994loops 1995while traversing corrupted or ill-formed resource template buffers. Check 1996for zero-length resource descriptors in all code that loops through 1997resource templates (the length field is used to index through the 1998template). This change also hardens the external AcpiWalkResources and 1999AcpiWalkResourceBuffer interfaces. 2000 2001Local Cache Manager: Enhanced the main data structure to eliminate an 2002unnecessary mechanism to access the next object in the list. Actually 2003provides a small performance enhancement for hosts that use the local 2004ACPICA cache manager. Jung-uk Kim. 2005 2006Example Code and Data Size: These are the sizes for the OS-independent 2007acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2008debug version of the code includes the debug output trace mechanism and 2009has a much larger code and data size. 2010 2011 Previous Release: 2012 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2013 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2014 Current Release: 2015 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2016 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2017 2018 20192) iASL Compiler/Disassembler and Tools: 2020 2021iASL/Disassembler: Fixed several issues with the definition of the ACPI 20225.0 RASF table (RAS Feature Table). This change incorporates late changes 2023that were made to the ACPI 5.0 specification. 2024 2025iASL/Disassembler: Added full support for the following new ACPI tables: 2026 1) The MTMR table (MID Timer Table) 2027 2) The VRTC table (Virtual Real Time Clock Table). 2028Includes header file, disassembler, table compiler, and template support 2029for both tables. 2030 2031iASL: Implemented compile-time validation of package objects returned by 2032predefined names. This new feature validates static package objects 2033returned by the various predefined names defined to return packages. Both 2034object types and package lengths are validated, for both parent packages 2035and sub-packages, if any. The code is similar in structure and behavior 2036to 2037the runtime repair mechanism within the AML interpreter and uses the 2038existing predefined name information table. Adds a new file, aslprepkg.c. 2039ACPICA BZ 938. 2040 2041iASL: Implemented auto-detection of binary ACPI tables for disassembly. 2042This feature detects a binary file with a valid ACPI table header and 2043invokes the disassembler automatically. Eliminates the need to 2044specifically invoke the disassembler with the -d option. ACPICA BZ 862. 2045 2046iASL/Disassembler: Added several warnings for the case where there are 2047unresolved control methods during the disassembly. This can potentially 2048cause errors when the output file is compiled, because the disassembler 2049assumes zero method arguments in these cases (it cannot determine the 2050actual number of arguments without resolution/definition of the method). 2051 2052Debugger: Added support to display all resources with a single command. 2053Invocation of the resources command with no arguments will now display 2054all 2055resources within the current namespace. 2056 2057AcpiHelp: Added descriptive text for each ACPICA exception code displayed 2058via the -e option. 2059 2060---------------------------------------- 206117 January 2013. Summary of changes for version 20130117: 2062 20631) ACPICA Kernel-resident Subsystem: 2064 2065Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 2066return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 2067objects to return a package containing one integer, most BIOS code 2068returns 2069two integers and the previous code reflects that. However, we also need 2070to 2071support BIOS code that actually implements to the ACPI spec, and this 2072change reflects this. 2073 2074Fixed two issues with the ACPI_DEBUG_PRINT macros: 20751) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 2076C compilers that require this support. 20772) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 2078ACPI_DEBUG is already used by many of the various hosts. 2079 2080Updated all ACPICA copyrights and signons to 2013. Added the 2013 2081copyright to all module headers and signons, including the standard Linux 2082header. This affects virtually every file in the ACPICA core subsystem, 2083iASL compiler, all ACPICA utilities, and the test suites. 2084 2085Example Code and Data Size: These are the sizes for the OS-independent 2086acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2087debug version of the code includes the debug output trace mechanism and 2088has a much larger code and data size. 2089 2090 Previous Release: 2091 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2092 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2093 Current Release: 2094 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2095 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2096 2097 20982) iASL Compiler/Disassembler and Tools: 2099 2100Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 2101prevent a possible fault on some hosts. Some C libraries modify the arg 2102pointer parameter to vfprintf making it difficult to call it twice in the 2103AcpiOsVprintf function. Use a local buffer to workaround this issue. This 2104does not affect the Windows OSL since the Win C library does not modify 2105the arg pointer. Chao Guan, Bob Moore. 2106 2107iASL: Fixed a possible infinite loop when the maximum error count is 2108reached. If an output file other than the .AML file is specified (such as 2109a listing file), and the maximum number of errors is reached, do not 2110attempt to flush data to the output file(s) as the compiler is aborting. 2111This can cause an infinite loop as the max error count code essentially 2112keeps calling itself. 2113 2114iASL/Disassembler: Added an option (-in) to ignore NOOP 2115opcodes/operators. 2116Implemented for both the compiler and the disassembler. Often, the NOOP 2117opcode is used as padding for packages that are changed dynamically by 2118the 2119BIOS. When disassembled and recompiled, these NOOPs will cause syntax 2120errors. This option causes the disassembler to ignore all NOOP opcodes 2121(0xA3), and it also causes the compiler to ignore all ASL source code 2122NOOP 2123statements as well. 2124 2125Debugger: Enhanced the Sleep command to execute all sleep states. This 2126change allows Sleep to be invoked with no arguments and causes the 2127debugger to execute all of the sleep states, 0-5, automatically. 2128 2129---------------------------------------- 213020 December 2012. Summary of changes for version 20121220: 2131 21321) ACPICA Kernel-resident Subsystem: 2133 2134Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 2135alternate entry point for AcpiWalkResources and improves the usability of 2136the resource manager by accepting as input a buffer containing the output 2137of either a _CRS, _PRS, or _AEI method. The key functionality is that the 2138input buffer is not deleted by this interface so that it can be used by 2139the host later. See the ACPICA reference for details. 2140 2141Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 2142(DSDT version < 2). The constant will be truncated and this warning 2143reflects that behavior. 2144 2145Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 2146ExtendedInterrupt, and GpioInt descriptors. This change adds support to 2147both get and set the new wake bit in these descriptors, separately from 2148the existing share bit. Reported by Aaron Lu. 2149 2150Interpreter: Fix Store() when an implicit conversion is not possible. For 2151example, in the cases such as a store of a string to an existing package 2152object, implement the store as a CopyObject(). This is a small departure 2153from the ACPI specification which states that the control method should 2154be 2155aborted in this case. However, the ASLTS suite depends on this behavior. 2156 2157Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 2158macros: check if debug output is currently enabled as soon as possible to 2159minimize performance impact if debug is in fact not enabled. 2160 2161Source code restructuring: Cleanup to improve modularity. The following 2162new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 2163psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 2164Associated makefiles and project files have been updated. 2165 2166Changed an exception code for LoadTable operator. For the case where one 2167of the input strings is too long, change the returned exception code from 2168AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 2169 2170Fixed a possible memory leak in dispatcher error path. On error, delete 2171the mutex object created during method mutex creation. Reported by 2172tim.gardner@canonical.com. 2173 2174Example Code and Data Size: These are the sizes for the OS-independent 2175acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2176debug version of the code includes the debug output trace mechanism and 2177has a much larger code and data size. 2178 2179 Previous Release: 2180 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2181 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2182 Current Release: 2183 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2184 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2185 2186 21872) iASL Compiler/Disassembler and Tools: 2188 2189iASL: Disallow a method call as argument to the ObjectType ASL operator. 2190This change tracks an errata to the ACPI 5.0 document. The AML grammar 2191will not allow the interpreter to differentiate between a method and a 2192method invocation when these are used as an argument to the ObjectType 2193operator. The ACPI specification change is to disallow a method 2194invocation 2195(UserTerm) for the ObjectType operator. 2196 2197Finish support for the TPM2 and CSRT tables in the headers, table 2198compiler, and disassembler. 2199 2200Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 2201always expires immediately if the semaphore is not available. The 2202original 2203code was using a relative-time timeout, but sem_timedwait requires the 2204use 2205of an absolute time. 2206 2207iASL: Added a remark if the Timer() operator is used within a 32-bit 2208table. This operator returns a 64-bit time value that will be truncated 2209within a 32-bit table. 2210 2211iASL Source code restructuring: Cleanup to improve modularity. The 2212following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 2213aslmethod.c, and aslfileio.c. Associated makefiles and project files have 2214been updated. 2215 2216 2217---------------------------------------- 221814 November 2012. Summary of changes for version 20121114: 2219 22201) ACPICA Kernel-resident Subsystem: 2221 2222Implemented a performance enhancement for ACPI/AML Package objects. This 2223change greatly increases the performance of Package objects within the 2224interpreter. It changes the processing of reference counts for packages 2225by 2226optimizing for the most common case where the package sub-objects are 2227either Integers, Strings, or Buffers. Increases the overall performance 2228of 2229the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 22302X.) 2231Chao Guan. ACPICA BZ 943. 2232 2233Implemented and deployed common macros to extract flag bits from resource 2234descriptors. Improves readability and maintainability of the code. Fixes 2235a 2236problem with the UART serial bus descriptor for the number of data bits 2237flags (was incorrectly 2 bits, should be 3). 2238 2239Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 2240of the macros and changed the SETx macros to the style of (destination, 2241source). Also added ACPI_CASTx companion macros. Lv Zheng. 2242 2243Example Code and Data Size: These are the sizes for the OS-independent 2244acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2245debug version of the code includes the debug output trace mechanism and 2246has a much larger code and data size. 2247 2248 Previous Release: 2249 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2250 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2251 Current Release: 2252 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2253 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2254 2255 22562) iASL Compiler/Disassembler and Tools: 2257 2258Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 2259adds the ShareAndWake and ExclusiveAndWake flags which were added to the 2260Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 2261 2262Disassembler: Fixed a problem with external declaration generation. Fixes 2263a problem where an incorrect pathname could be generated for an external 2264declaration if the original reference to the object includes leading 2265carats (^). ACPICA BZ 984. 2266 2267Debugger: Completed a major update for the Disassemble<method> command. 2268This command was out-of-date and did not properly disassemble control 2269methods that had any reasonable complexity. This fix brings the command 2270up 2271to the same level as the rest of the disassembler. Adds one new file, 2272dmdeferred.c, which is existing code that is now common with the main 2273disassembler and the debugger disassemble command. ACPICA MZ 978. 2274 2275iASL: Moved the parser entry prototype to avoid a duplicate declaration. 2276Newer versions of Bison emit this prototype, so moved the prototype out 2277of 2278the iASL header to where it is actually used in order to avoid a 2279duplicate 2280declaration. 2281 2282iASL/Tools: Standardized use of the stream I/O functions: 2283 1) Ensure check for I/O error after every fopen/fread/fwrite 2284 2) Ensure proper order of size/count arguments for fread/fwrite 2285 3) Use test of (Actual != Requested) after all fwrite, and most fread 2286 4) Standardize I/O error messages 2287Improves reliability and maintainability of the code. Bob Moore, Lv 2288Zheng. 2289ACPICA BZ 981. 2290 2291Disassembler: Prevent duplicate External() statements. During generation 2292of external statements, detect similar pathnames that are actually 2293duplicates such as these: 2294 External (\ABCD) 2295 External (ABCD) 2296Remove all leading '\' characters from pathnames during the external 2297statement generation so that duplicates will be detected and tossed. 2298ACPICA BZ 985. 2299 2300Tools: Replace low-level I/O with stream I/O functions. Replace 2301open/read/write/close with the stream I/O equivalents 2302fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 2303Moore. 2304 2305AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 2306name header so that AcpiXtract recognizes the output file/table. 2307 2308iASL: Remove obsolete -2 option flag. Originally intended to force the 2309compiler/disassembler into an ACPI 2.0 mode, this was never implemented 2310and the entire concept is now obsolete. 2311 2312---------------------------------------- 231318 October 2012. Summary of changes for version 20121018: 2314 2315 23161) ACPICA Kernel-resident Subsystem: 2317 2318Updated support for the ACPI 5.0 MPST table. Fixes some problems 2319introduced by late changes to the table as it was added to the ACPI 5.0 2320specification. Includes header, disassembler, and data table compiler 2321support as well as a new version of the MPST template. 2322 2323AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 23245.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 2325methods: _HID, _CID, and _UID. 2326 2327Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 2328ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 2329name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 2330names for their various drivers. Affects the AcpiGetObjectInfo external 2331interface, and other internal interfaces as well. 2332 2333Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 2334This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 2335on machines that support non-aligned transfers. Optimizes for this case 2336rather than using a strncpy. With assistance from Zheng Lv. 2337 2338Resource Manager: Small fix for buffer size calculation. Fixed a one byte 2339error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 2340 2341Added a new debug print message for AML mutex objects that are force- 2342released. At control method termination, any currently acquired mutex 2343objects are force-released. Adds a new debug-only message for each one 2344that is released. 2345 2346Audited/updated all ACPICA return macros and the function debug depth 2347counter: 1) Ensure that all functions that use the various TRACE macros 2348also use the appropriate ACPICA return macros. 2) Ensure that all normal 2349return statements surround the return expression (value) with parens to 2350ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 2351Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 2352 2353Global source code changes/maintenance: All extra lines at the start and 2354end of each source file have been removed for consistency. Also, within 2355comments, all new sentences start with a single space instead of a double 2356space, again for consistency across the code base. 2357 2358Example Code and Data Size: These are the sizes for the OS-independent 2359acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2360debug version of the code includes the debug output trace mechanism and 2361has a much larger code and data size. 2362 2363 Previous Release: 2364 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2365 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2366 Current Release: 2367 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2368 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2369 2370 23712) iASL Compiler/Disassembler and Tools: 2372 2373AcpiExec: Improved the algorithm used for memory leak/corruption 2374detection. Added some intelligence to the code that maintains the global 2375list of allocated memory. The list is now ordered by allocated memory 2376address, significantly improving performance. When running AcpiExec on 2377the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 2378on the platform and/or the environment. Note, this performance 2379enhancement affects the AcpiExec utility only, not the kernel-resident 2380ACPICA code. 2381 2382Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 2383the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 2384incorrect table offset reported for invalid opcodes. Report the original 238532-bit value for bad ACPI_NAMEs (as well as the repaired name.) 2386 2387Disassembler: Enhanced the -vt option to emit the binary table data in 2388hex format to assist with debugging. 2389 2390Fixed a potential filename buffer overflow in osunixdir.c. Increased the 2391size of file structure. Colin Ian King. 2392 2393---------------------------------------- 239413 September 2012. Summary of changes for version 20120913: 2395 2396 23971) ACPICA Kernel-resident Subsystem: 2398 2399ACPI 5.0: Added two new notify types for the Hardware Error Notification 2400Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 2401and 2402MCE(6). 2403 2404Table Manager: Merged/removed duplicate code in the root table resize 2405functions. One function is external, the other is internal. Lv Zheng, 2406ACPICA 2407BZ 846. 2408 2409Makefiles: Completely removed the obsolete "Linux" makefiles under 2410acpica/generate/linux. These makefiles are obsolete and have been 2411replaced 2412by 2413the generic unix makefiles under acpica/generate/unix. 2414 2415Makefiles: Ensure that binary files always copied properly. Minor rule 2416change 2417to ensure that the final binary output files are always copied up to the 2418appropriate binary directory (bin32 or bin64.) 2419 2420Example Code and Data Size: These are the sizes for the OS-independent 2421acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2422debug 2423version of the code includes the debug output trace mechanism and has a 2424much 2425larger code and data size. 2426 2427 Previous Release: 2428 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2429 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2430 Current Release: 2431 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2432 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2433 2434 24352) iASL Compiler/Disassembler and Tools: 2436 2437Disassembler: Fixed a possible fault during the disassembly of resource 2438descriptors when a second parse is required because of the invocation of 2439external control methods within the table. With assistance from 2440adq@lidskialf.net. ACPICA BZ 976. 2441 2442iASL: Fixed a namepath optimization problem. An error can occur if the 2443parse 2444node that contains the namepath to be optimized does not have a parent 2445node 2446that is a named object. This change fixes the problem. 2447 2448iASL: Fixed a regression where the AML file is not deleted on errors. The 2449AML 2450output file should be deleted if there are any errors during the 2451compiler. 2452The 2453only exception is if the -f (force output) option is used. ACPICA BZ 974. 2454 2455iASL: Added a feature to automatically increase internal line buffer 2456sizes. 2457Via realloc(), automatically increase the internal line buffer sizes as 2458necessary to support very long source code lines. The current version of 2459the 2460preprocessor requires a buffer long enough to contain full source code 2461lines. 2462This change increases the line buffer(s) if the input lines go beyond the 2463current buffer size. This eliminates errors that occurred when a source 2464code 2465line was longer than the buffer. 2466 2467iASL: Fixed a problem with constant folding in method declarations. The 2468SyncLevel term is a ByteConstExpr, and incorrect code would be generated 2469if a 2470Type3 opcode was used. 2471 2472Debugger: Improved command help support. For incorrect argument count, 2473display 2474full help for the command. For help command itself, allow an argument to 2475specify a command. 2476 2477Test Suites: Several bug fixes for the ASLTS suite reduces the number of 2478errors during execution of the suite. Guan Chao. 2479 2480---------------------------------------- 248116 August 2012. Summary of changes for version 20120816: 2482 2483 24841) ACPICA Kernel-resident Subsystem: 2485 2486Removed all use of the deprecated _GTS and _BFS predefined methods. The 2487_GTS 2488(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 2489deprecated and will probably be removed from the ACPI specification. 2490Windows 2491does not invoke them, and reportedly never will. The final nail in the 2492coffin 2493is that the ACPI specification states that these methods must be run with 2494interrupts off, which is not going to happen in a kernel interpreter. 2495Note: 2496Linux has removed all use of the methods also. It was discovered that 2497invoking these functions caused failures on some machines, probably 2498because 2499they were never tested since Windows does not call them. Affects two 2500external 2501interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 2502ACPICA BZ 969. 2503 2504Implemented support for complex bit-packed buffers returned from the _PLD 2505(Physical Location of Device) predefined method. Adds a new external 2506interface, AcpiDecodePldBuffer that parses the buffer into a more usable 2507C 2508structure. Note: C Bitfields cannot be used for this type of predefined 2509structure since the memory layout of individual bitfields is not defined 2510by 2511the C language. In addition, there are endian concerns where a compiler 2512will 2513change the bitfield ordering based on the machine type. The new ACPICA 2514interface eliminates these issues, and should be called after _PLD is 2515executed. ACPICA BZ 954. 2516 2517Implemented a change to allow a scope change to root (via "Scope (\)") 2518during 2519execution of module-level ASL code (code that is executed at table load 2520time.) Lin Ming. 2521 2522Added the Windows8/Server2012 string for the _OSI method. This change 2523adds 2524a 2525new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 25262012. 2527 2528Added header support for the new ACPI tables DBG2 (Debug Port Table Type 25292) 2530and CSRT (Core System Resource Table). 2531 2532Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 2533names. This simplifies access to the buffers returned by these predefined 2534names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 2535 2536GPE support: Removed an extraneous parameter from the various low-level 2537internal GPE functions. Tang Feng. 2538 2539Removed the linux makefiles from the unix packages. The generate/linux 2540makefiles are obsolete and have been removed from the unix tarball 2541release 2542packages. The replacement makefiles are under generate/unix, and there is 2543a 2544top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 2545 2546Updates for Unix makefiles: 25471) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 25482) Update linker flags (move to end of command line) for AcpiExec 2549utility. 2550Guan Chao. 2551 2552Split ACPICA initialization functions to new file, utxfinit.c. Split from 2553utxface.c to improve modularity and reduce file size. 2554 2555Example Code and Data Size: These are the sizes for the OS-independent 2556acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2557debug version of the code includes the debug output trace mechanism and 2558has a 2559much larger code and data size. 2560 2561 Previous Release: 2562 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2563 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2564 Current Release: 2565 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2566 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2567 2568 25692) iASL Compiler/Disassembler and Tools: 2570 2571iASL: Fixed a problem with constant folding for fixed-length constant 2572expressions. The constant-folding code was not being invoked for constant 2573expressions that allow the use of type 3/4/5 opcodes to generate 2574constants 2575for expressions such as ByteConstExpr, WordConstExpr, etc. This could 2576result 2577in the generation of invalid AML bytecode. ACPICA BZ 970. 2578 2579iASL: Fixed a generation issue on newer versions of Bison. Newer versions 2580apparently automatically emit some of the necessary externals. This 2581change 2582handles these versions in order to eliminate generation warnings. 2583 2584Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 2585 2586Disassembler: Add support to decode _PLD buffers. The decoded buffer 2587appears 2588within comments in the output file. 2589 2590Debugger: Fixed a regression with the "Threads" command where 2591AE_BAD_PARAMETER was always returned. 2592 2593---------------------------------------- 259411 July 2012. Summary of changes for version 20120711: 2595 25961) ACPICA Kernel-resident Subsystem: 2597 2598Fixed a possible fault in the return package object repair code. Fixes a 2599problem that can occur when a lone package object is wrapped with an 2600outer 2601package object in order to force conformance to the ACPI specification. 2602Can 2603affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 2604_DLM, 2605_CSD, _PSD, _TSD. 2606 2607Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 2608PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 2609ARB_DIS bit must be implemented in the host-dependent C3 processor power 2610state 2611support. Note, ARB_DIS is obsolete and only applies to older chipsets, 2612both 2613Intel and other vendors. (for Intel: ICH4-M and earlier) 2614 2615This change removes the code to disable/enable bus master arbitration 2616during 2617suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 2618causes 2619resume problems on some machines. The change has been in use for over 2620seven 2621years within Linux. 2622 2623Implemented two new external interfaces to support host-directed dynamic 2624ACPI 2625table load and unload. They are intended to simplify the host 2626implementation 2627of hot-plug support: 2628 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 2629 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 2630table. 2631See the ACPICA reference for additional details. Adds one new file, 2632components/tables/tbxfload.c 2633 2634Implemented and deployed two new interfaces for errors and warnings that 2635are 2636known to be caused by BIOS/firmware issues: 2637 AcpiBiosError: Prints "ACPI Firmware Error" message. 2638 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 2639Deployed these new interfaces in the ACPICA Table Manager code for ACPI 2640table 2641and FADT errors. Additional deployment to be completed as appropriate in 2642the 2643future. The associated conditional macros are ACPI_BIOS_ERROR and 2644ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 2645ACPICA 2646BZ 2647843. 2648 2649Implicit notify support: ensure that no memory allocation occurs within a 2650critical region. This fix moves a memory allocation outside of the time 2651that a 2652spinlock is held. Fixes issues on systems that do not allow this 2653behavior. 2654Jung-uk Kim. 2655 2656Split exception code utilities and tables into a new file, 2657utilities/utexcep.c 2658 2659Example Code and Data Size: These are the sizes for the OS-independent 2660acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2661debug 2662version of the code includes the debug output trace mechanism and has a 2663much 2664larger code and data size. 2665 2666 Previous Release: 2667 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2668 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2669 Current Release: 2670 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2671 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2672 2673 26742) iASL Compiler/Disassembler and Tools: 2675 2676iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 2677of 26780. Jung-uk Kim. 2679 2680Debugger: Enhanced the "tables" command to emit additional information 2681about 2682the current set of ACPI tables, including the owner ID and flags decode. 2683 2684Debugger: Reimplemented the "unload" command to use the new 2685AcpiUnloadParentTable external interface. This command was disable 2686previously 2687due to need for an unload interface. 2688 2689AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 2690option 2691will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 2692 2693---------------------------------------- 269420 June 2012. Summary of changes for version 20120620: 2695 2696 26971) ACPICA Kernel-resident Subsystem: 2698 2699Implemented support to expand the "implicit notify" feature to allow 2700multiple 2701devices to be notified by a single GPE. This feature automatically 2702generates a 2703runtime device notification in the absence of a BIOS-provided GPE control 2704method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 2705notify is 2706provided by ACPICA for Windows compatibility, and is a workaround for 2707BIOS 2708AML 2709code errors. See the description of the AcpiSetupGpeForWake interface in 2710the 2711APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 2712 2713Changed some comments and internal function names to simplify and ensure 2714correctness of the Linux code translation. No functional changes. 2715 2716Example Code and Data Size: These are the sizes for the OS-independent 2717acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2718debug 2719version of the code includes the debug output trace mechanism and has a 2720much 2721larger code and data size. 2722 2723 Previous Release: 2724 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2725 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2726 Current Release: 2727 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2728 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2729 2730 27312) iASL Compiler/Disassembler and Tools: 2732 2733Disassembler: Added support to emit short, commented descriptions for the 2734ACPI 2735predefined names in order to improve the readability of the disassembled 2736output. ACPICA BZ 959. Changes include: 2737 1) Emit descriptions for all standard predefined names (_INI, _STA, 2738_PRW, 2739etc.) 2740 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 2741 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 2742etc.) 2743 2744AcpiSrc: Fixed several long-standing Linux code translation issues. 2745Argument 2746descriptions in function headers are now translated properly to lower 2747case 2748and 2749underscores. ACPICA BZ 961. Also fixes translation problems such as 2750these: 2751(old -> new) 2752 i_aSL -> iASL 2753 00-7_f -> 00-7F 2754 16_k -> 16K 2755 local_fADT -> local_FADT 2756 execute_oSI -> execute_OSI 2757 2758iASL: Fixed a problem where null bytes were inadvertently emitted into 2759some 2760listing files. 2761 2762iASL: Added the existing debug options to the standard help screen. There 2763are 2764no longer two different help screens. ACPICA BZ 957. 2765 2766AcpiHelp: Fixed some typos in the various predefined name descriptions. 2767Also 2768expand some of the descriptions where appropriate. 2769 2770iASL: Fixed the -ot option (display compile times/statistics). Was not 2771working 2772properly for standard output; only worked for the debug file case. 2773 2774---------------------------------------- 277518 May 2012. Summary of changes for version 20120518: 2776 2777 27781) ACPICA Core Subsystem: 2779 2780Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 2781defined 2782to block until asynchronous events such as notifies and GPEs have 2783completed. 2784Within ACPICA, it is only called before a notify or GPE handler is 2785removed/uninstalled. It also may be useful for the host OS within related 2786drivers such as the Embedded Controller driver. See the ACPICA reference 2787for 2788additional information. ACPICA BZ 868. 2789 2790ACPI Tables: Added a new error message for a possible overflow failure 2791during 2792the conversion of FADT 32-bit legacy register addresses to internal 2793common 279464- 2795bit GAS structure representation. The GAS has a one-byte "bit length" 2796field, 2797thus limiting the register length to 255 bits. ACPICA BZ 953. 2798 2799Example Code and Data Size: These are the sizes for the OS-independent 2800acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2801debug 2802version of the code includes the debug output trace mechanism and has a 2803much 2804larger code and data size. 2805 2806 Previous Release: 2807 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2808 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2809 Current Release: 2810 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2811 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2812 2813 28142) iASL Compiler/Disassembler and Tools: 2815 2816iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 2817macro. 2818This keyword was added late in the ACPI 5.0 release cycle and was not 2819implemented until now. 2820 2821Disassembler: Added support for Operation Region externals. Adds missing 2822support for operation regions that are defined in another table, and 2823referenced locally via a Field or BankField ASL operator. Now generates 2824the 2825correct External statement. 2826 2827Disassembler: Several additional fixes for the External() statement 2828generation 2829related to some ASL operators. Also, order the External() statements 2830alphabetically in the disassembler output. Fixes the External() 2831generation 2832for 2833the Create* field, Alias, and Scope operators: 2834 1) Create* buffer field operators - fix type mismatch warning on 2835disassembly 2836 2) Alias - implement missing External support 2837 3) Scope - fix to make sure all necessary externals are emitted. 2838 2839iASL: Improved pathname support. For include files, merge the prefix 2840pathname 2841with the file pathname and eliminate unnecessary components. Convert 2842backslashes in all pathnames to forward slashes, for readability. Include 2843file 2844pathname changes affect both #include and Include() type operators. 2845 2846iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 2847end 2848of a valid line by inserting a newline and then returning the EOF during 2849the 2850next call to GetNextLine. Prevents the line from being ignored due to EOF 2851condition. 2852 2853iASL: Implemented some changes to enhance the IDE support (-vi option.) 2854Error 2855and Warning messages are now correctly recognized for both the source 2856code 2857browser and the global error and warning counts. 2858 2859---------------------------------------- 286020 April 2012. Summary of changes for version 20120420: 2861 2862 28631) ACPICA Core Subsystem: 2864 2865Implemented support for multiple notify handlers. This change adds 2866support 2867to 2868allow multiple system and device notify handlers on Device, Thermal Zone, 2869and 2870Processor objects. This can simplify the host OS notification 2871implementation. 2872Also re-worked and restructured the entire notify support code to 2873simplify 2874handler installation, handler removal, notify event queuing, and notify 2875dispatch to handler(s). Note: there can still only be two global notify 2876handlers - one for system notifies and one for device notifies. There are 2877no 2878changes to the existing handler install/remove interfaces. Lin Ming, Bob 2879Moore, Rafael Wysocki. 2880 2881Fixed a regression in the package repair code where the object reference 2882count was calculated incorrectly. Regression was introduced in the commit 2883"Support to add Package wrappers". 2884 2885Fixed a couple possible memory leaks in the AML parser, in the error 2886recovery 2887path. Jesper Juhl, Lin Ming. 2888 2889Example Code and Data Size: These are the sizes for the OS-independent 2890acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2891debug version of the code includes the debug output trace mechanism and 2892has a 2893much larger code and data size. 2894 2895 Previous Release: 2896 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2897 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2898 Current Release: 2899 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2900 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2901 2902 29032) iASL Compiler/Disassembler and Tools: 2904 2905iASL: Fixed a problem with the resource descriptor support where the 2906length 2907of the StartDependentFn and StartDependentFnNoPrio descriptors were not 2908included in cumulative descriptor offset, resulting in incorrect values 2909for 2910resource tags within resource descriptors appearing after a 2911StartDependent* 2912descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 2913 2914iASL and Preprocessor: Implemented full support for the #line directive 2915to 2916correctly track original source file line numbers through the .i 2917preprocessor 2918output file - for error and warning messages. 2919 2920iASL: Expand the allowable byte constants for address space IDs. 2921Previously, 2922the allowable range was 0x80-0xFF (user-defined spaces), now the range is 29230x0A-0xFF to allow for custom and new IDs without changing the compiler. 2924 2925iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 2926 2927iASL: Add option to completely disable the preprocessor (-Pn). 2928 2929iASL: Now emit all error/warning messages to standard error (stderr) by 2930default (instead of the previous stdout). 2931 2932ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 2933Update 2934for resource descriptor offset fix above. Update/cleanup error output 2935routines. Enable and send iASL errors/warnings to an error logfile 2936(error.txt). Send all other iASL output to a logfile (compiler.txt). 2937Fixed 2938several extraneous "unrecognized operator" messages. 2939 2940---------------------------------------- 294120 March 2012. Summary of changes for version 20120320: 2942 2943 29441) ACPICA Core Subsystem: 2945 2946Enhanced the sleep/wake interfaces to optionally execute the _GTS method 2947(Going To Sleep) and the _BFS method (Back From Sleep). Windows 2948apparently 2949does not execute these methods, and therefore these methods are often 2950untested. It has been seen on some systems where the execution of these 2951methods causes errors and also prevents the machine from entering S5. It 2952is 2953therefore suggested that host operating systems do not execute these 2954methods 2955by default. In the future, perhaps these methods can be optionally 2956executed 2957based on the age of the system and/or what is the newest version of 2958Windows 2959that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 2960and 2961AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 2962Ming. 2963 2964Fixed a problem where the length of the local/common FADT was set too 2965early. 2966The local FADT table length cannot be set to the common length until the 2967original length has been examined. There is code that checks the table 2968length 2969and sets various fields appropriately. This can affect older machines 2970with 2971early FADT versions. For example, this can cause inadvertent writes to 2972the 2973CST_CNT register. Julian Anastasov. 2974 2975Fixed a mapping issue related to a physical table override. Use the 2976deferred 2977mapping mechanism for tables loaded via the physical override OSL 2978interface. 2979This allows for early mapping before the virtual memory manager is 2980available. 2981Thomas Renninger, Bob Moore. 2982 2983Enhanced the automatic return-object repair code: Repair a common problem 2984with 2985predefined methods that are defined to return a variable-length Package 2986of 2987sub-objects. If there is only one sub-object, some BIOS ASL code 2988mistakenly 2989simply returns the single object instead of a Package with one sub- 2990object. 2991This new support will repair this error by wrapping a Package object 2992around 2993the original object, creating the correct and expected Package with one 2994sub- 2995object. Names that can be repaired in this manner include: _ALR, _CSD, 2996_HPX, 2997_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 2998939. 2999 3000Changed the exception code returned for invalid ACPI paths passed as 3001parameters to external interfaces such as AcpiEvaluateObject. Was 3002AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 3003 3004Example Code and Data Size: These are the sizes for the OS-independent 3005acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3006debug 3007version of the code includes the debug output trace mechanism and has a 3008much 3009larger code and data size. 3010 3011 Previous Release: 3012 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3013 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3014 Current Release: 3015 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3016 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3017 3018 30192) iASL Compiler/Disassembler and Tools: 3020 3021iASL: Added the infrastructure and initial implementation of a integrated 3022C- 3023like preprocessor. This will simplify BIOS development process by 3024eliminating 3025the need for a separate preprocessing step during builds. On Windows, it 3026also 3027eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 3028features including full #define() macro support are still under 3029development. 3030These preprocessor directives are supported: 3031 #define 3032 #elif 3033 #else 3034 #endif 3035 #error 3036 #if 3037 #ifdef 3038 #ifndef 3039 #include 3040 #pragma message 3041 #undef 3042 #warning 3043In addition, these new command line options are supported: 3044 -D <symbol> Define symbol for preprocessor use 3045 -li Create preprocessed output file (*.i) 3046 -P Preprocess only and create preprocessor output file (*.i) 3047 3048Table Compiler: Fixed a problem where the equals operator within an 3049expression 3050did not work properly. 3051 3052Updated iASL to use the current versions of Bison/Flex. Updated the 3053Windows 3054project file to invoke these tools from the standard location. ACPICA BZ 3055904. 3056Versions supported: 3057 Flex for Windows: V2.5.4 3058 Bison for Windows: V2.4.1 3059 3060---------------------------------------- 306115 February 2012. Summary of changes for version 20120215: 3062 3063 30641) ACPICA Core Subsystem: 3065 3066There have been some major changes to the sleep/wake support code, as 3067described below (a - e). 3068 3069a) The AcpiLeaveSleepState has been split into two interfaces, similar to 3070AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 3071AcpiLeaveSleepStatePrep. This allows the host to perform actions between 3072the 3073time the _BFS method is called and the _WAK method is called. NOTE: all 3074hosts 3075must update their wake/resume code or else sleep/wake will not work 3076properly. 3077Rafael Wysocki. 3078 3079b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 3080_WAK 3081method. Some machines require that the GPEs are enabled before the _WAK 3082method 3083is executed. Thomas Renninger. 3084 3085c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 3086bit. 3087Some BIOS code assumes that WAK_STS will be cleared on resume and use it 3088to 3089determine whether the system is rebooting or resuming. Matthew Garrett. 3090 3091d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 3092Sleep) to 3093match the ACPI specification requirement. Rafael Wysocki. 3094 3095e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 3096registers within the V5 FADT. This support adds two new files: 3097hardware/hwesleep.c implements the support for the new registers. Moved 3098all 3099sleep/wake external interfaces to hardware/hwxfsleep.c. 3100 3101 3102Added a new OSL interface for ACPI table overrides, 3103AcpiOsPhysicalTableOverride. This interface allows the host to override a 3104table via a physical address, instead of the logical address required by 3105AcpiOsTableOverride. This simplifies the host implementation. Initial 3106implementation by Thomas Renninger. The ACPICA implementation creates a 3107single 3108shared function for table overrides that attempts both a logical and a 3109physical override. 3110 3111Expanded the OSL memory read/write interfaces to 64-bit data 3112(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 3113transfer support for GAS register structures passed to AcpiRead and 3114AcpiWrite. 3115 3116Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 3117custom 3118build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 3119model. 3120See the ACPICA reference for details. ACPICA BZ 942. This option removes 3121about 312210% of the code and 5% of the static data, and the following hardware 3123ACPI 3124features become unavailable: 3125 PM Event and Control registers 3126 SCI interrupt (and handler) 3127 Fixed Events 3128 General Purpose Events (GPEs) 3129 Global Lock 3130 ACPI PM timer 3131 FACS table (Waking vectors and Global Lock) 3132 3133Updated the unix tarball directory structure to match the ACPICA git 3134source 3135tree. This ensures that the generic unix makefiles work properly (in 3136generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 3137867. 3138 3139Updated the return value of the _REV predefined method to integer value 5 3140to 3141reflect ACPI 5.0 support. 3142 3143Moved the external ACPI PM timer interface prototypes to the public 3144acpixf.h 3145file where they belong. 3146 3147Example Code and Data Size: These are the sizes for the OS-independent 3148acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3149debug 3150version of the code includes the debug output trace mechanism and has a 3151much 3152larger code and data size. 3153 3154 Previous Release: 3155 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3156 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3157 Current Release: 3158 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3159 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3160 3161 31622) iASL Compiler/Disassembler and Tools: 3163 3164Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 3165descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 3166incorrectly displayed. 3167 3168AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 3169specification. 3170 3171---------------------------------------- 317211 January 2012. Summary of changes for version 20120111: 3173 3174 31751) ACPICA Core Subsystem: 3176 3177Implemented a new mechanism to allow host device drivers to check for 3178address 3179range conflicts with ACPI Operation Regions. Both SystemMemory and 3180SystemIO 3181address spaces are supported. A new external interface, 3182AcpiCheckAddressRange, 3183allows drivers to check an address range against the ACPI namespace. See 3184the 3185ACPICA reference for additional details. Adds one new file, 3186utilities/utaddress.c. Lin Ming, Bob Moore. 3187 3188Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 3189Control 3190and 3191Status registers, update the ACPI 5.0 flags, and update internal data 3192structures to handle an FADT larger than 256 bytes. The size of the ACPI 31935.0 3194FADT is 268 bytes. 3195 3196Updated all ACPICA copyrights and signons to 2012. Added the 2012 3197copyright to 3198all module headers and signons, including the standard Linux header. This 3199affects virtually every file in the ACPICA core subsystem, iASL compiler, 3200and 3201all ACPICA utilities. 3202 3203Example Code and Data Size: These are the sizes for the OS-independent 3204acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3205debug 3206version of the code includes the debug output trace mechanism and has a 3207much 3208larger code and data size. 3209 3210 Previous Release: 3211 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3212 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3213 Current Release: 3214 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3215 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3216 3217 32182) iASL Compiler/Disassembler and Tools: 3219 3220Disassembler: fixed a problem with the automatic resource tag generation 3221support. Fixes a problem where the resource tags are inadvertently not 3222constructed if the table being disassembled contains external references 3223to 3224control methods. Moved the actual construction of the tags to after the 3225final 3226namespace is constructed (after 2nd parse is invoked due to external 3227control 3228method references.) ACPICA BZ 941. 3229 3230Table Compiler: Make all "generic" operators caseless. These are the 3231operators 3232like UINT8, String, etc. Making these caseless improves ease-of-use. 3233ACPICA BZ 3234934. 3235 3236---------------------------------------- 323723 November 2011. Summary of changes for version 20111123: 3238 32390) ACPI 5.0 Support: 3240 3241This release contains full support for the ACPI 5.0 specification, as 3242summarized below. 3243 3244Reduced Hardware Support: 3245------------------------- 3246 3247This support allows for ACPI systems without the usual ACPI hardware. 3248This 3249support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 3250will 3251not attempt to initialize or use any of the usual ACPI hardware. Note, 3252when 3253this flag is set, all of the following ACPI hardware is assumed to be not 3254present and is not initialized or accessed: 3255 3256 General Purpose Events (GPEs) 3257 Fixed Events (PM1a/PM1b and PM Control) 3258 Power Management Timer and Console Buttons (power/sleep) 3259 Real-time Clock Alarm 3260 Global Lock 3261 System Control Interrupt (SCI) 3262 The FACS is assumed to be non-existent 3263 3264ACPI Tables: 3265------------ 3266 3267All new tables and updates to existing tables are fully supported in the 3268ACPICA headers (for use by device drivers), the disassembler, and the 3269iASL 3270Data Table Compiler. ACPI 5.0 defines these new tables: 3271 3272 BGRT /* Boot Graphics Resource Table */ 3273 DRTM /* Dynamic Root of Trust for Measurement table */ 3274 FPDT /* Firmware Performance Data Table */ 3275 GTDT /* Generic Timer Description Table */ 3276 MPST /* Memory Power State Table */ 3277 PCCT /* Platform Communications Channel Table */ 3278 PMTT /* Platform Memory Topology Table */ 3279 RASF /* RAS Feature table */ 3280 3281Operation Regions/SpaceIDs: 3282--------------------------- 3283 3284All new operation regions are fully supported by the iASL compiler, the 3285disassembler, and the ACPICA runtime code (for dispatch to region 3286handlers.) 3287The new operation region Space IDs are: 3288 3289 GeneralPurposeIo 3290 GenericSerialBus 3291 3292Resource Descriptors: 3293--------------------- 3294 3295All new ASL resource descriptors are fully supported by the iASL 3296compiler, 3297the 3298ASL/AML disassembler, and the ACPICA runtime Resource Manager code 3299(including 3300all new predefined resource tags). New descriptors are: 3301 3302 FixedDma 3303 GpioIo 3304 GpioInt 3305 I2cSerialBus 3306 SpiSerialBus 3307 UartSerialBus 3308 3309ASL/AML Operators, New and Modified: 3310------------------------------------ 3311 3312One new operator is added, the Connection operator, which is used to 3313associate 3314a GeneralPurposeIo or GenericSerialBus resource descriptor with 3315individual 3316field objects within an operation region. Several new protocols are 3317associated 3318with the AccessAs operator. All are fully supported by the iASL compiler, 3319disassembler, and runtime ACPICA AML interpreter: 3320 3321 Connection // Declare Field Connection 3322attributes 3323 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 3324 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 3325Protocol 3326 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 3327 RawDataBuffer // Data type for Vendor Data 3328fields 3329 3330Predefined ASL/AML Objects: 3331--------------------------- 3332 3333All new predefined objects/control-methods are supported by the iASL 3334compiler 3335and the ACPICA runtime validation/repair (arguments and return values.) 3336New 3337predefined names include the following: 3338 3339Standard Predefined Names (Objects or Control Methods): 3340 _AEI, _CLS, _CPC, _CWS, _DEP, 3341 _DLM, _EVT, _GCP, _CRT, _GWS, 3342 _HRV, _PRE, _PSE, _SRT, _SUB. 3343 3344Resource Tags (Names used to access individual fields within resource 3345descriptors): 3346 _DBT, _DPL, _DRS, _END, _FLC, 3347 _IOR, _LIN, _MOD, _PAR, _PHA, 3348 _PIN, _PPI, _POL, _RXL, _SLV, 3349 _SPE, _STB, _TXL, _VEN. 3350 3351ACPICA External Interfaces: 3352--------------------------- 3353 3354Several new interfaces have been defined for use by ACPI-related device 3355drivers and other host OS services: 3356 3357AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 3358to 3359acquire and release AML mutexes that are defined in the DSDT/SSDT tables 3360provided by the BIOS. They are intended to be used in conjunction with 3361the 3362ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 3363mutual exclusion with the AML code/interpreter. 3364 3365AcpiGetEventResources: Returns the (formatted) resource descriptors as 3366defined 3367by the ACPI 5.0 _AEI object (ACPI Event Information). This object 3368provides 3369resource descriptors associated with hardware-reduced platform events, 3370similar 3371to the AcpiGetCurrentResources interface. 3372 3373Operation Region Handlers: For General Purpose IO and Generic Serial Bus 3374operation regions, information about the Connection() object and any 3375optional 3376length information is passed to the region handler within the Context 3377parameter. 3378 3379AcpiBufferToResource: This interface converts a raw AML buffer containing 3380a 3381resource template or resource descriptor to the ACPI_RESOURCE internal 3382format 3383suitable for use by device drivers. Can be used by an operation region 3384handler 3385to convert the Connection() buffer object into a ACPI_RESOURCE. 3386 3387Miscellaneous/Tools/TestSuites: 3388------------------------------- 3389 3390Support for extended _HID names (Four alpha characters instead of three). 3391Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 3392Support for ACPI 5.0 features in the ASLTS test suite. 3393Fully updated documentation (ACPICA and iASL reference documents.) 3394 3395ACPI Table Definition Language: 3396------------------------------- 3397 3398Support for this language was implemented and released as a subsystem of 3399the 3400iASL compiler in 2010. (See the iASL compiler User Guide.) 3401 3402 3403Non-ACPI 5.0 changes for this release: 3404-------------------------------------- 3405 34061) ACPICA Core Subsystem: 3407 3408Fix a problem with operation region declarations where a failure can 3409occur 3410if 3411the region name and an argument that evaluates to an object (such as the 3412region address) are in different namespace scopes. Lin Ming, ACPICA BZ 3413937. 3414 3415Do not abort an ACPI table load if an invalid space ID is found within. 3416This 3417will be caught later if the offending method is executed. ACPICA BZ 925. 3418 3419Fixed an issue with the FFixedHW space ID where the ID was not always 3420recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 3421 3422Fixed a problem with the 32-bit generation of the unix-specific OSL 3423(osunixxf.c). Lin Ming, ACPICA BZ 936. 3424 3425Several changes made to enable generation with the GCC 4.6 compiler. 3426ACPICA BZ 3427935. 3428 3429New error messages: Unsupported I/O requests (not 8/16/32 bit), and 3430Index/Bank 3431field registers out-of-range. 3432 34332) iASL Compiler/Disassembler and Tools: 3434 3435iASL: Implemented the __PATH__ operator, which returns the full pathname 3436of 3437the current source file. 3438 3439AcpiHelp: Automatically display expanded keyword information for all ASL 3440operators. 3441 3442Debugger: Add "Template" command to disassemble/dump resource template 3443buffers. 3444 3445Added a new master script to generate and execute the ASLTS test suite. 3446Automatically handles 32- and 64-bit generation. See tests/aslts.sh 3447 3448iASL: Fix problem with listing generation during processing of the 3449Switch() 3450operator where AML listing was disabled until the entire Switch block was 3451completed. 3452 3453iASL: Improve support for semicolon statement terminators. Fix "invalid 3454character" message for some cases when the semicolon is used. Semicolons 3455are 3456now allowed after every <Term> grammar element. ACPICA BZ 927. 3457 3458iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 3459923. 3460 3461Disassembler: Fix problem with disassembly of the DataTableRegion 3462operator 3463where an inadvertent "Unhandled deferred opcode" message could be 3464generated. 3465 34663) Example Code and Data Size 3467 3468These are the sizes for the OS-independent acpica.lib produced by the 3469Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3470includes the debug output trace mechanism and has a much larger code and 3471data 3472size. 3473 3474 Previous Release: 3475 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3476 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3477 Current Release: 3478 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3479 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3480 3481---------------------------------------- 348222 September 2011. Summary of changes for version 20110922: 3483 34840) ACPI 5.0 News: 3485 3486Support for ACPI 5.0 in ACPICA has been underway for several months and 3487will 3488be released at the same time that ACPI 5.0 is officially released. 3489 3490The ACPI 5.0 specification is on track for release in the next few 3491months. 3492 34931) ACPICA Core Subsystem: 3494 3495Fixed a problem where the maximum sleep time for the Sleep() operator was 3496intended to be limited to two seconds, but was inadvertently limited to 349720 3498seconds instead. 3499 3500Linux and Unix makefiles: Added header file dependencies to ensure 3501correct 3502generation of ACPICA core code and utilities. Also simplified the 3503makefiles 3504considerably through the use of the vpath variable to specify search 3505paths. 3506ACPICA BZ 924. 3507 35082) iASL Compiler/Disassembler and Tools: 3509 3510iASL: Implemented support to check the access length for all fields 3511created to 3512access named Resource Descriptor fields. For example, if a resource field 3513is 3514defined to be two bits, a warning is issued if a CreateXxxxField() is 3515used 3516with an incorrect bit length. This is implemented for all current 3517resource 3518descriptor names. ACPICA BZ 930. 3519 3520Disassembler: Fixed a byte ordering problem with the output of 24-bit and 352156- 3522bit integers. 3523 3524iASL: Fixed a couple of issues associated with variable-length package 3525objects. 1) properly handle constants like One, Ones, Zero -- do not make 3526a 3527VAR_PACKAGE when these are used as a package length. 2) Allow the 3528VAR_PACKAGE 3529opcode (in addition to PACKAGE) when validating object types for 3530predefined 3531names. 3532 3533iASL: Emit statistics for all output files (instead of just the ASL input 3534and 3535AML output). Includes listings, hex files, etc. 3536 3537iASL: Added -G option to the table compiler to allow the compilation of 3538custom 3539ACPI tables. The only part of a table that is required is the standard 354036- 3541byte 3542ACPI header. 3543 3544AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 3545headers), 3546which also adds correct 64-bit support. Also, now all output filenames 3547are 3548completely lower case. 3549 3550AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 3551loading table files. A warning is issued for any such tables. The only 3552exception is an FADT. This also fixes a possible fault when attempting to 3553load 3554non-AML tables. ACPICA BZ 932. 3555 3556AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 3557a 3558missing table terminator could cause a fault when using the -p option. 3559 3560AcpiSrc: Fixed a possible divide-by-zero fault when generating file 3561statistics. 3562 35633) Example Code and Data Size 3564 3565These are the sizes for the OS-independent acpica.lib produced by the 3566Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3567includes the debug output trace mechanism and has a much larger code and 3568data 3569size. 3570 3571 Previous Release (VC 9.0): 3572 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3573 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3574 Current Release (VC 9.0): 3575 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3576 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3577 3578 3579---------------------------------------- 358023 June 2011. Summary of changes for version 20110623: 3581 35821) ACPI CA Core Subsystem: 3583 3584Updated the predefined name repair mechanism to not attempt repair of a 3585_TSS 3586return object if a _PSS object is present. We can only sort the _TSS 3587return 3588package if there is no _PSS within the same scope. This is because if 3589_PSS 3590is 3591present, the ACPI specification dictates that the _TSS Power Dissipation 3592field 3593is to be ignored, and therefore some BIOSs leave garbage values in the 3594_TSS 3595Power field(s). In this case, it is best to just return the _TSS package 3596as- 3597is. Reported by, and fixed with assistance from Fenghua Yu. 3598 3599Added an option to globally disable the control method return value 3600validation 3601and repair. This runtime option can be used to disable return value 3602repair 3603if 3604this is causing a problem on a particular machine. Also added an option 3605to 3606AcpiExec (-dr) to set this disable flag. 3607 3608All makefiles and project files: Major changes to improve generation of 3609ACPICA 3610tools. ACPICA BZ 912: 3611 Reduce default optimization levels to improve compatibility 3612 For Linux, add strict-aliasing=0 for gcc 4 3613 Cleanup and simplify use of command line defines 3614 Cleanup multithread library support 3615 Improve usage messages 3616 3617Linux-specific header: update handling of THREAD_ID and pthread. For the 361832- 3619bit case, improve casting to eliminate possible warnings, especially with 3620the 3621acpica tools. 3622 3623Example Code and Data Size: These are the sizes for the OS-independent 3624acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3625debug 3626version of the code includes the debug output trace mechanism and has a 3627much 3628larger code and data size. 3629 3630 Previous Release (VC 9.0): 3631 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3632 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3633 Current Release (VC 9.0): 3634 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3635 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3636 36372) iASL Compiler/Disassembler and Tools: 3638 3639With this release, a new utility named "acpihelp" has been added to the 3640ACPICA 3641package. This utility summarizes the ACPI specification chapters for the 3642ASL 3643and AML languages. It generates under Linux/Unix as well as Windows, and 3644provides the following functionality: 3645 Find/display ASL operator(s) -- with description and syntax. 3646 Find/display ASL keyword(s) -- with exact spelling and descriptions. 3647 Find/display ACPI predefined name(s) -- with description, number 3648 of arguments, and the return value data type. 3649 Find/display AML opcode name(s) -- with opcode, arguments, and 3650grammar. 3651 Decode/display AML opcode -- with opcode name, arguments, and 3652grammar. 3653 3654Service Layers: Make multi-thread support configurable. Conditionally 3655compile 3656the multi-thread support so that threading libraries will not be linked 3657if 3658not 3659necessary. The only tool that requires multi-thread support is AcpiExec. 3660 3661iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 3662of 3663Bison appear to want the interface to yyerror to be a const char * (or at 3664least this is a problem when generating iASL on some systems.) ACPICA BZ 3665923 3666Pierre Lejeune. 3667 3668Tools: Fix for systems where O_BINARY is not defined. Only used for 3669Windows 3670versions of the tools. 3671 3672---------------------------------------- 367327 May 2011. Summary of changes for version 20110527: 3674 36751) ACPI CA Core Subsystem: 3676 3677ASL Load() operator: Reinstate most restrictions on the incoming ACPI 3678table 3679signature. Now, only allow SSDT, OEMx, and a null signature. History: 3680 1) Originally, we checked the table signature for "SSDT" or "PSDT". 3681 (PSDT is now obsolete.) 3682 2) We added support for OEMx tables, signature "OEM" plus a fourth 3683 "don't care" character. 3684 3) Valid tables were encountered with a null signature, so we just 3685 gave up on validating the signature, (05/2008). 3686 4) We encountered non-AML tables such as the MADT, which caused 3687 interpreter errors and kernel faults. So now, we once again allow 3688 only SSDT, OEMx, and now, also a null signature. (05/2011). 3689 3690Added the missing _TDL predefined name to the global name list in order 3691to 3692enable validation. Affects both the core ACPICA code and the iASL 3693compiler. 3694 3695Example Code and Data Size: These are the sizes for the OS-independent 3696acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3697debug 3698version of the code includes the debug output trace mechanism and has a 3699much 3700larger code and data size. 3701 3702 Previous Release (VC 9.0): 3703 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3704 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3705 Current Release (VC 9.0): 3706 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3707 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3708 37092) iASL Compiler/Disassembler and Tools: 3710 3711Debugger/AcpiExec: Implemented support for "complex" method arguments on 3712the 3713debugger command line. This adds support beyond simple integers -- 3714including 3715Strings, Buffers, and Packages. Includes support for nested packages. 3716Increased the default command line buffer size to accommodate these 3717arguments. 3718See the ACPICA reference for details and syntax. ACPICA BZ 917. 3719 3720Debugger/AcpiExec: Implemented support for "default" method arguments for 3721the 3722Execute/Debug command. Now, the debugger will always invoke a control 3723method 3724with the required number of arguments -- even if the command line 3725specifies 3726none or insufficient arguments. It uses default integer values for any 3727missing 3728arguments. Also fixes a bug where only six method arguments maximum were 3729supported instead of the required seven. 3730 3731Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 3732and 3733also return status in order to prevent buffer overruns. See the ACPICA 3734reference for details and syntax. ACPICA BZ 921 3735 3736iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 3737makefiles to simplify support for the two different but similar parser 3738generators, bison and yacc. 3739 3740Updated the generic unix makefile for gcc 4. The default gcc version is 3741now 3742expected to be 4 or greater, since options specific to gcc 4 are used. 3743 3744---------------------------------------- 374513 April 2011. Summary of changes for version 20110413: 3746 37471) ACPI CA Core Subsystem: 3748 3749Implemented support to execute a so-called "orphan" _REG method under the 3750EC 3751device. This change will force the execution of a _REG method underneath 3752the 3753EC 3754device even if there is no corresponding operation region of type 3755EmbeddedControl. Fixes a problem seen on some machines and apparently is 3756compatible with Windows behavior. ACPICA BZ 875. 3757 3758Added more predefined methods that are eligible for automatic NULL 3759package 3760element removal. This change adds another group of predefined names to 3761the 3762list 3763of names that can be repaired by having NULL package elements dynamically 3764removed. This group are those methods that return a single variable- 3765length 3766package containing simple data types such as integers, buffers, strings. 3767This 3768includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 3769_PSL, 3770_Sx, 3771and _TZD. ACPICA BZ 914. 3772 3773Split and segregated all internal global lock functions to a new file, 3774evglock.c. 3775 3776Updated internal address SpaceID for DataTable regions. Moved this 3777internal 3778space 3779id in preparation for ACPI 5.0 changes that will include some new space 3780IDs. 3781This 3782change should not affect user/host code. 3783 3784Example Code and Data Size: These are the sizes for the OS-independent 3785acpica.lib 3786produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3787version of 3788the code includes the debug output trace mechanism and has a much larger 3789code 3790and 3791data size. 3792 3793 Previous Release (VC 9.0): 3794 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3795 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3796 Current Release (VC 9.0): 3797 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3798 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3799 38002) iASL Compiler/Disassembler and Tools: 3801 3802iASL/DTC: Major update for new grammar features. Allow generic data types 3803in 3804custom ACPI tables. Field names are now optional. Any line can be split 3805to 3806multiple lines using the continuation char (\). Large buffers now use 3807line- 3808continuation character(s) and no colon on the continuation lines. See the 3809grammar 3810update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 3811Moore. 3812 3813iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 3814statements. 3815Since the parser stuffs a "zero" as the return value for these statements 3816(due 3817to 3818the underlying AML grammar), they were seen as "return with value" by the 3819iASL 3820semantic checking. They are now seen correctly as "null" return 3821statements. 3822 3823iASL: Check if a_REG declaration has a corresponding Operation Region. 3824Adds a 3825check for each _REG to ensure that there is in fact a corresponding 3826operation 3827region declaration in the same scope. If not, the _REG method is not very 3828useful 3829since it probably won't be executed. ACPICA BZ 915. 3830 3831iASL/DTC: Finish support for expression evaluation. Added a new 3832expression 3833parser 3834that implements c-style operator precedence and parenthesization. ACPICA 3835bugzilla 3836908. 3837 3838Disassembler/DTC: Remove support for () and <> style comments in data 3839tables. 3840Now 3841that DTC has full expression support, we don't want to have comment 3842strings 3843that 3844start with a parentheses or a less-than symbol. Now, only the standard /* 3845and 3846// 3847comments are supported, as well as the bracket [] comments. 3848 3849AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 3850"unusual" 3851headers in the acpidump file. Update the header validation to support 3852these 3853tables. Problem introduced in previous AcpiXtract version in the change 3854to 3855support "wrong checksum" error messages emitted by acpidump utility. 3856 3857iASL: Add a * option to generate all template files (as a synonym for 3858ALL) 3859as 3860in 3861"iasl -T *" or "iasl -T ALL". 3862 3863iASL/DTC: Do not abort compiler on fatal errors. We do not want to 3864completely 3865abort the compiler on "fatal" errors, simply should abort the current 3866compile. 3867This allows multiple compiles with a single (possibly wildcard) compiler 3868invocation. 3869 3870---------------------------------------- 387116 March 2011. Summary of changes for version 20110316: 3872 38731) ACPI CA Core Subsystem: 3874 3875Fixed a problem caused by a _PRW method appearing at the namespace root 3876scope 3877during the setup of wake GPEs. A fault could occur if a _PRW directly 3878under 3879the 3880root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 3881 3882Implemented support for "spurious" Global Lock interrupts. On some 3883systems, a 3884global lock interrupt can occur without the pending flag being set. Upon 3885a 3886GL 3887interrupt, we now ensure that a thread is actually waiting for the lock 3888before 3889signaling GL availability. Rafael Wysocki, Bob Moore. 3890 3891Example Code and Data Size: These are the sizes for the OS-independent 3892acpica.lib 3893produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3894version of 3895the code includes the debug output trace mechanism and has a much larger 3896code 3897and 3898data size. 3899 3900 Previous Release (VC 9.0): 3901 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3902 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3903 Current Release (VC 9.0): 3904 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3905 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3906 39072) iASL Compiler/Disassembler and Tools: 3908 3909Implemented full support for the "SLIC" ACPI table. Includes support in 3910the 3911header files, disassembler, table compiler, and template generator. Bob 3912Moore, 3913Lin Ming. 3914 3915AcpiXtract: Correctly handle embedded comments and messages from 3916AcpiDump. 3917Apparently some or all versions of acpidump will occasionally emit a 3918comment 3919like 3920"Wrong checksum", etc., into the dump file. This was causing problems for 3921AcpiXtract. ACPICA BZ 905. 3922 3923iASL: Fix the Linux makefile by removing an inadvertent double file 3924inclusion. 3925ACPICA BZ 913. 3926 3927AcpiExec: Update installation of operation region handlers. Install one 3928handler 3929for a user-defined address space. This is used by the ASL test suite 3930(ASLTS). 3931 3932---------------------------------------- 393311 February 2011. Summary of changes for version 20110211: 3934 39351) ACPI CA Core Subsystem: 3936 3937Added a mechanism to defer _REG methods for some early-installed 3938handlers. 3939Most user handlers should be installed before call to 3940AcpiEnableSubsystem. 3941However, Event handlers and region handlers should be installed after 3942AcpiInitializeObjects. Override handlers for the "default" regions should 3943be 3944installed early, however. This change executes all _REG methods for the 3945default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 3946chicken/egg issues between them. ACPICA BZ 848. 3947 3948Implemented an optimization for GPE detection. This optimization will 3949simply 3950ignore GPE registers that contain no enabled GPEs -- there is no need to 3951read the register since this information is available internally. This 3952becomes more important on machines with a large GPE space. ACPICA 3953bugzilla 3954884. Lin Ming. Suggestion from Joe Liu. 3955 3956Removed all use of the highly unreliable FADT revision field. The 3957revision 3958number in the FADT has been found to be completely unreliable and cannot 3959be 3960trusted. Only the actual table length can be used to infer the version. 3961This 3962change updates the ACPICA core and the disassembler so that both no 3963longer 3964even look at the FADT version and instead depend solely upon the FADT 3965length. 3966 3967Fix an unresolved name issue for the no-debug and no-error-message source 3968generation cases. The _AcpiModuleName was left undefined in these cases, 3969but 3970it is actually needed as a parameter to some interfaces. Define 3971_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 3972 3973Split several large files (makefiles and project files updated) 3974 utglobal.c -> utdecode.c 3975 dbcomds.c -> dbmethod.c dbnames.c 3976 dsopcode.c -> dsargs.c dscontrol.c 3977 dsload.c -> dsload2.c 3978 aslanalyze.c -> aslbtypes.c aslwalks.c 3979 3980Example Code and Data Size: These are the sizes for the OS-independent 3981acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3982debug version of the code includes the debug output trace mechanism and 3983has 3984a much larger code and data size. 3985 3986 Previous Release (VC 9.0): 3987 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3988 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3989 Current Release (VC 9.0): 3990 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3991 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3992 39932) iASL Compiler/Disassembler and Tools: 3994 3995iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 3996These are useful C-style macros with the standard definitions. ACPICA 3997bugzilla 898. 3998 3999iASL/DTC: Added support for integer expressions and labels. Support for 4000full 4001expressions for all integer fields in all ACPI tables. Support for labels 4002in 4003"generic" portions of tables such as UEFI. See the iASL reference manual. 4004 4005Debugger: Added a command to display the status of global handlers. The 4006"handlers" command will display op region, fixed event, and miscellaneous 4007global handlers. installation status -- and for op regions, whether 4008default 4009or user-installed handler will be used. 4010 4011iASL: Warn if reserved method incorrectly returns a value. Many 4012predefined 4013names are defined such that they do not return a value. If implemented as 4014a 4015method, issue a warning if such a name explicitly returns a value. ACPICA 4016Bugzilla 855. 4017 4018iASL: Added detection of GPE method name conflicts. Detects a conflict 4019where 4020there are two GPE methods of the form _Lxy and _Exy in the same scope. 4021(For 4022example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 4023 4024iASL/DTC: Fixed a couple input scanner issues with comments and line 4025numbers. Comment remover could get confused and miss a comment ending. 4026Fixed 4027a problem with line counter maintenance. 4028 4029iASL/DTC: Reduced the severity of some errors from fatal to error. There 4030is 4031no need to abort on simple errors within a field definition. 4032 4033Debugger: Simplified the output of the help command. All help output now 4034in 4035a single screen, instead of help subcommands. ACPICA Bugzilla 897. 4036 4037---------------------------------------- 403812 January 2011. Summary of changes for version 20110112: 4039 40401) ACPI CA Core Subsystem: 4041 4042Fixed a race condition between method execution and namespace walks that 4043can 4044possibly cause a fault. The problem was apparently introduced in version 404520100528 as a result of a performance optimization that reduces the 4046number 4047of 4048namespace walks upon method exit by using the delete_namespace_subtree 4049function instead of the delete_namespace_by_owner function used 4050previously. 4051Bug is a missing namespace lock in the delete_namespace_subtree function. 4052dana.myers@oracle.com 4053 4054Fixed several issues and a possible fault with the automatic "serialized" 4055method support. History: This support changes a method to "serialized" on 4056the 4057fly if the method generates an AE_ALREADY_EXISTS error, indicating the 4058possibility that it cannot handle reentrancy. This fix repairs a couple 4059of 4060issues seen in the field, especially on machines with many cores: 4061 4062 1) Delete method children only upon the exit of the last thread, 4063 so as to not delete objects out from under other running threads 4064 (and possibly causing a fault.) 4065 2) Set the "serialized" bit for the method only upon the exit of the 4066 Last thread, so as to not cause deadlock when running threads 4067 attempt to exit. 4068 3) Cleanup the use of the AML "MethodFlags" and internal method flags 4069 so that there is no longer any confusion between the two. 4070 4071 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 4072 4073Debugger: Now lock the namespace for duration of a namespace dump. 4074Prevents 4075issues if the namespace is changing dynamically underneath the debugger. 4076Especially affects temporary namespace nodes, since the debugger displays 4077these also. 4078 4079Updated the ordering of include files. The ACPICA headers should appear 4080before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 4081set 4082any necessary compiler-specific defines, etc. Affects the ACPI-related 4083tools 4084and utilities. 4085 4086Updated all ACPICA copyrights and signons to 2011. Added the 2011 4087copyright 4088to all module headers and signons, including the Linux header. This 4089affects 4090virtually every file in the ACPICA core subsystem, iASL compiler, and all 4091utilities. 4092 4093Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 4094project files for VC++ 6.0 are now obsolete. New project files can be 4095found 4096under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 4097details. 4098 4099Example Code and Data Size: These are the sizes for the OS-independent 4100acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4101debug version of the code includes the debug output trace mechanism and 4102has a 4103much larger code and data size. 4104 4105 Previous Release (VC 6.0): 4106 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4107 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4108 Current Release (VC 9.0): 4109 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4110 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4111 41122) iASL Compiler/Disassembler and Tools: 4113 4114iASL: Added generic data types to the Data Table compiler. Add "generic" 4115data 4116types such as UINT32, String, Unicode, etc., to simplify the generation 4117of 4118platform-defined tables such as UEFI. Lin Ming. 4119 4120iASL: Added listing support for the Data Table Compiler. Adds listing 4121support 4122(-l) to display actual binary output for each line of input code. 4123 4124---------------------------------------- 412509 December 2010. Summary of changes for version 20101209: 4126 41271) ACPI CA Core Subsystem: 4128 4129Completed the major overhaul of the GPE support code that was begun in 4130July 41312010. Major features include: removal of _PRW execution in ACPICA (host 4132executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 4133changes to existing interfaces, simplification of GPE handler operation, 4134and 4135a handful of new interfaces: 4136 4137 AcpiUpdateAllGpes 4138 AcpiFinishGpe 4139 AcpiSetupGpeForWake 4140 AcpiSetGpeWakeMask 4141 One new file, evxfgpe.c to consolidate all external GPE interfaces. 4142 4143See the ACPICA Programmer Reference for full details and programming 4144information. See the new section 4.4 "General Purpose Event (GPE) 4145Support" 4146for a full overview, and section 8.7 "ACPI General Purpose Event 4147Management" 4148for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 4149Ming, 4150Bob Moore, Rafael Wysocki. 4151 4152Implemented a new GPE feature for Windows compatibility, the "Implicit 4153Wake 4154GPE Notify". This feature will automatically issue a Notify(2) on a 4155device 4156when a Wake GPE is received if there is no corresponding GPE method or 4157handler. ACPICA BZ 870. 4158 4159Fixed a problem with the Scope() operator during table parse and load 4160phase. 4161During load phase (table load or method execution), the scope operator 4162should 4163not enter the target into the namespace. Instead, it should open a new 4164scope 4165at the target location. Linux BZ 19462, ACPICA BZ 882. 4166 4167Example Code and Data Size: These are the sizes for the OS-independent 4168acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4169debug version of the code includes the debug output trace mechanism and 4170has a 4171much larger code and data size. 4172 4173 Previous Release: 4174 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4175 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4176 Current Release: 4177 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4178 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4179 41802) iASL Compiler/Disassembler and Tools: 4181 4182iASL: Relax the alphanumeric restriction on _CID strings. These strings 4183are 4184"bus-specific" per the ACPI specification, and therefore any characters 4185are 4186acceptable. The only checks that can be performed are for a null string 4187and 4188perhaps for a leading asterisk. ACPICA BZ 886. 4189 4190iASL: Fixed a problem where a syntax error that caused a premature EOF 4191condition on the source file emitted a very confusing error message. The 4192premature EOF is now detected correctly. ACPICA BZ 891. 4193 4194Disassembler: Decode the AccessSize within a Generic Address Structure 4195(byte 4196access, word access, etc.) Note, this field does not allow arbitrary bit 4197access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 4198 4199New: AcpiNames utility - Example namespace dump utility. Shows an example 4200of 4201ACPICA configuration for a minimal namespace dump utility. Uses table and 4202namespace managers, but no AML interpreter. Does not add any 4203functionality 4204over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 4205partition and configure ACPICA. ACPICA BZ 883. 4206 4207AML Debugger: Increased the debugger buffer size for method return 4208objects. 4209Was 4K, increased to 16K. Also enhanced error messages for debugger 4210method 4211execution, including the buffer overflow case. 4212 4213---------------------------------------- 421413 October 2010. Summary of changes for version 20101013: 4215 42161) ACPI CA Core Subsystem: 4217 4218Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 4219now 4220clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 4221HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 4222 4223Changed the type of the predefined namespace object _TZ from ThermalZone 4224to 4225Device. This was found to be confusing to the host software that 4226processes 4227the various thermal zones, since _TZ is not really a ThermalZone. 4228However, 4229a 4230Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 4231Zhang. 4232 4233Added Windows Vista SP2 to the list of supported _OSI strings. The actual 4234string is "Windows 2006 SP2". 4235 4236Eliminated duplicate code in AcpiUtExecute* functions. Now that the 4237nsrepair 4238code automatically repairs _HID-related strings, this type of code is no 4239longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 4240878. 4241 4242Example Code and Data Size: These are the sizes for the OS-independent 4243acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4244debug version of the code includes the debug output trace mechanism and 4245has a 4246much larger code and data size. 4247 4248 Previous Release: 4249 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4250 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4251 Current Release: 4252 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4253 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4254 42552) iASL Compiler/Disassembler and Tools: 4256 4257iASL: Implemented additional compile-time validation for _HID strings. 4258The 4259non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 4260length 4261of 4262the string must be exactly seven or eight characters. For both _HID and 4263_CID 4264strings, all characters must be alphanumeric. ACPICA BZ 874. 4265 4266iASL: Allow certain "null" resource descriptors. Some BIOS code creates 4267descriptors that are mostly or all zeros, with the expectation that they 4268will 4269be filled in at runtime. iASL now allows this as long as there is a 4270"resource 4271tag" (name) associated with the descriptor, which gives the ASL a handle 4272needed to modify the descriptor. ACPICA BZ 873. 4273 4274Added single-thread support to the generic Unix application OSL. 4275Primarily 4276for iASL support, this change removes the use of semaphores in the 4277single- 4278threaded ACPICA tools/applications - increasing performance. The 4279_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 4280option. ACPICA BZ 879. 4281 4282AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 4283support 4284for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 4285 4286iASL: Moved all compiler messages to a new file, aslmessages.h. 4287 4288---------------------------------------- 428915 September 2010. Summary of changes for version 20100915: 4290 42911) ACPI CA Core Subsystem: 4292 4293Removed the AcpiOsDerivePciId OSL interface. The various host 4294implementations 4295of this function were not OS-dependent and are now obsolete and can be 4296removed from all host OSLs. This function has been replaced by 4297AcpiHwDerivePciId, which is now part of the ACPICA core code. 4298AcpiHwDerivePciId has been implemented without recursion. Adds one new 4299module, hwpci.c. ACPICA BZ 857. 4300 4301Implemented a dynamic repair for _HID and _CID strings. The following 4302problems are now repaired at runtime: 1) Remove a leading asterisk in the 4303string, and 2) the entire string is uppercased. Both repairs are in 4304accordance with the ACPI specification and will simplify host driver 4305code. 4306ACPICA BZ 871. 4307 4308The ACPI_THREAD_ID type is no longer configurable, internally it is now 4309always UINT64. This simplifies the ACPICA code, especially any printf 4310output. 4311UINT64 is the only common data type for all thread_id types across all 4312operating systems. It is now up to the host OSL to cast the native 4313thread_id 4314type to UINT64 before returning the value to ACPICA (via 4315AcpiOsGetThreadId). 4316Lin Ming, Bob Moore. 4317 4318Added the ACPI_INLINE type to enhance the ACPICA configuration. The 4319"inline" 4320keyword is not standard across compilers, and this type allows inline to 4321be 4322configured on a per-compiler basis. Lin Ming. 4323 4324Made the system global AcpiGbl_SystemAwakeAndRunning publically 4325available. 4326Added an extern for this boolean in acpixf.h. Some hosts utilize this 4327value 4328during suspend/restore operations. ACPICA BZ 869. 4329 4330All code that implements error/warning messages with the "ACPI:" prefix 4331has 4332been moved to a new module, utxferror.c. 4333 4334The UINT64_OVERLAY was moved to utmath.c, which is the only module where 4335it 4336is used. ACPICA BZ 829. Lin Ming, Bob Moore. 4337 4338Example Code and Data Size: These are the sizes for the OS-independent 4339acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4340debug version of the code includes the debug output trace mechanism and 4341has a 4342much larger code and data size. 4343 4344 Previous Release: 4345 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4346 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4347 Current Release: 4348 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4349 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4350 43512) iASL Compiler/Disassembler and Tools: 4352 4353iASL/Disassembler: Write ACPI errors to stderr instead of the output 4354file. 4355This keeps the output files free of random error messages that may 4356originate 4357from within the namespace/interpreter code. Used this opportunity to 4358merge 4359all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 4360866. Lin Ming, Bob Moore. 4361 4362Tools: update some printfs for ansi warnings on size_t. Handle width 4363change 4364of size_t on 32-bit versus 64-bit generations. Lin Ming. 4365 4366---------------------------------------- 436706 August 2010. Summary of changes for version 20100806: 4368 43691) ACPI CA Core Subsystem: 4370 4371Designed and implemented a new host interface to the _OSI support code. 4372This 4373will allow the host to dynamically add or remove multiple _OSI strings, 4374as 4375well as install an optional handler that is called for each _OSI 4376invocation. 4377Also added a new AML debugger command, 'osi' to display and modify the 4378global 4379_OSI string table, and test support in the AcpiExec utility. See the 4380ACPICA 4381reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 4382New Functions: 4383 AcpiInstallInterface - Add an _OSI string. 4384 AcpiRemoveInterface - Delete an _OSI string. 4385 AcpiInstallInterfaceHandler - Install optional _OSI handler. 4386Obsolete Functions: 4387 AcpiOsValidateInterface - no longer used. 4388New Files: 4389 source/components/utilities/utosi.c 4390 4391Re-introduced the support to enable multi-byte transfers for Embedded 4392Controller (EC) operation regions. A reported problem was found to be a 4393bug 4394in the host OS, not in the multi-byte support. Previously, the maximum 4395data 4396size passed to the EC operation region handler was a single byte. There 4397are 4398often EC Fields larger than one byte that need to be transferred, and it 4399is 4400useful for the EC driver to lock these as a single transaction. This 4401change 4402enables single transfers larger than 8 bits. This effectively changes the 4403access to the EC space from ByteAcc to AnyAcc, and will probably require 4404changes to the host OS Embedded Controller driver to enable 16/32/64/256- 4405bit 4406transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 4407 4408Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 4409prototype in acpiosxf.h had the output value pointer as a (void *). 4410It should be a (UINT64 *). This may affect some host OSL code. 4411 4412Fixed a couple problems with the recently modified Linux makefiles for 4413iASL 4414and AcpiExec. These new makefiles place the generated object files in the 4415local directory so that there can be no collisions between the files that 4416are 4417shared between them that are compiled with different options. 4418 4419Example Code and Data Size: These are the sizes for the OS-independent 4420acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4421debug version of the code includes the debug output trace mechanism and 4422has a 4423much larger code and data size. 4424 4425 Previous Release: 4426 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4427 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4428 Current Release: 4429 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4430 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4431 44322) iASL Compiler/Disassembler and Tools: 4433 4434iASL/Disassembler: Added a new option (-da, "disassemble all") to load 4435the 4436namespace from and disassemble an entire group of AML files. Useful for 4437loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 4438and 4439disassembling with one simple command. ACPICA BZ 865. Lin Ming. 4440 4441iASL: Allow multiple invocations of -e option. This change allows 4442multiple 4443uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 4444834. 4445Lin Ming. 4446 4447---------------------------------------- 444802 July 2010. Summary of changes for version 20100702: 4449 44501) ACPI CA Core Subsystem: 4451 4452Implemented several updates to the recently added GPE reference count 4453support. The model for "wake" GPEs is changing to give the host OS 4454complete 4455control of these GPEs. Eventually, the ACPICA core will not execute any 4456_PRW 4457methods, since the host already must execute them. Also, additional 4458changes 4459were made to help ensure that the reference counts are kept in proper 4460synchronization with reality. Rafael J. Wysocki. 4461 44621) Ensure that GPEs are not enabled twice during initialization. 44632) Ensure that GPE enable masks stay in sync with the reference count. 44643) Do not inadvertently enable GPEs when writing GPE registers. 44654) Remove the internal wake reference counter and add new AcpiGpeWakeup 4466interface. This interface will set or clear individual GPEs for wakeup. 44675) Remove GpeType argument from AcpiEnable and AcpiDisable. These 4468interfaces 4469are now used for "runtime" GPEs only. 4470 4471Changed the behavior of the GPE install/remove handler interfaces. The 4472GPE 4473is 4474no longer disabled during this process, as it was found to cause problems 4475on 4476some machines. Rafael J. Wysocki. 4477 4478Reverted a change introduced in version 20100528 to enable Embedded 4479Controller multi-byte transfers. This change was found to cause problems 4480with 4481Index Fields and possibly Bank Fields. It will be reintroduced when these 4482problems have been resolved. 4483 4484Fixed a problem with references to Alias objects within Package Objects. 4485A 4486reference to an Alias within the definition of a Package was not always 4487resolved properly. Aliases to objects like Processors, Thermal zones, 4488etc. 4489were resolved to the actual object instead of a reference to the object 4490as 4491it 4492should be. Package objects are only allowed to contain integer, string, 4493buffer, package, and reference objects. Redhat bugzilla 608648. 4494 4495Example Code and Data Size: These are the sizes for the OS-independent 4496acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4497debug version of the code includes the debug output trace mechanism and 4498has a 4499much larger code and data size. 4500 4501 Previous Release: 4502 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4503 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4504 Current Release: 4505 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4506 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4507 45082) iASL Compiler/Disassembler and Tools: 4509 4510iASL: Implemented a new compiler subsystem to allow definition and 4511compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 4512These 4513are called "ACPI Data Tables", and the new compiler is the "Data Table 4514Compiler". This compiler is intended to simplify the existing error-prone 4515process of creating these tables for the BIOS, as well as allowing the 4516disassembly, modification, recompilation, and override of existing ACPI 4517data 4518tables. See the iASL User Guide for detailed information. 4519 4520iASL: Implemented a new Template Generator option in support of the new 4521Data 4522Table Compiler. This option will create examples of all known ACPI tables 4523that can be used as the basis for table development. See the iASL 4524documentation and the -T option. 4525 4526Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 4527Descriptor Table). 4528 4529Updated the Linux makefiles for iASL and AcpiExec to place the generated 4530object files in the local directory so that there can be no collisions 4531between the shared files between them that are generated with different 4532options. 4533 4534Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 4535Use 4536the #define __APPLE__ to enable this support. 4537 4538---------------------------------------- 453928 May 2010. Summary of changes for version 20100528: 4540 4541Note: The ACPI 4.0a specification was released on April 5, 2010 and is 4542available at www.acpi.info. This is primarily an errata release. 4543 45441) ACPI CA Core Subsystem: 4545 4546Undefined ACPI tables: We are looking for the definitions for the 4547following 4548ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 4549 4550Implemented support to enable multi-byte transfers for Embedded 4551Controller 4552(EC) operation regions. Previously, the maximum data size passed to the 4553EC 4554operation region handler was a single byte. There are often EC Fields 4555larger 4556than one byte that need to be transferred, and it is useful for the EC 4557driver 4558to lock these as a single transaction. This change enables single 4559transfers 4560larger than 8 bits. This effectively changes the access to the EC space 4561from 4562ByteAcc to AnyAcc, and will probably require changes to the host OS 4563Embedded 4564Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 4565bit 4566transfers. Alexey Starikovskiy, Lin Ming 4567 4568Implemented a performance enhancement for namespace search and access. 4569This 4570change enhances the performance of namespace searches and walks by adding 4571a 4572backpointer to the parent in each namespace node. On large namespaces, 4573this 4574change can improve overall ACPI performance by up to 9X. Adding a pointer 4575to 4576each namespace node increases the overall size of the internal namespace 4577by 4578about 5%, since each namespace entry usually consists of both a namespace 4579node and an ACPI operand object. However, this is the first growth of the 4580namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 4581 4582Implemented a performance optimization that reduces the number of 4583namespace 4584walks. On control method exit, only walk the namespace if the method is 4585known 4586to have created namespace objects outside of its local scope. Previously, 4587the 4588entire namespace was traversed on each control method exit. This change 4589can 4590improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 4591Moore. 4592 4593Added support to truncate I/O addresses to 16 bits for Windows 4594compatibility. 4595Some ASL code has been seen in the field that inadvertently has bits set 4596above bit 15. This feature is optional and is enabled if the BIOS 4597requests 4598any Windows OSI strings. It can also be enabled by the host OS. Matthew 4599Garrett, Bob Moore. 4600 4601Added support to limit the maximum time for the ASL Sleep() operator. To 4602prevent accidental deep sleeps, limit the maximum time that Sleep() will 4603actually sleep. Configurable, the default maximum is two seconds. ACPICA 4604bugzilla 854. 4605 4606Added run-time validation support for the _WDG and_WED Microsoft 4607predefined 4608methods. These objects are defined by "Windows Instrumentation", and are 4609not 4610part of the ACPI spec. ACPICA BZ 860. 4611 4612Expanded all statistic counters used during namespace and device 4613initialization from 16 to 32 bits in order to support very large 4614namespaces. 4615 4616Replaced all instances of %d in printf format specifiers with %u since 4617nearly 4618all integers in ACPICA are unsigned. 4619 4620Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 4621returned 4622as AE_NO_HANDLER. 4623 4624Example Code and Data Size: These are the sizes for the OS-independent 4625acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4626debug version of the code includes the debug output trace mechanism and 4627has a 4628much larger code and data size. 4629 4630 Previous Release: 4631 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4632 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4633 Current Release: 4634 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4635 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4636 46372) iASL Compiler/Disassembler and Tools: 4638 4639iASL: Added compiler support for the _WDG and_WED Microsoft predefined 4640methods. These objects are defined by "Windows Instrumentation", and are 4641not 4642part of the ACPI spec. ACPICA BZ 860. 4643 4644AcpiExec: added option to disable the memory tracking mechanism. The -dt 4645option will disable the tracking mechanism, which improves performance 4646considerably. 4647 4648AcpiExec: Restructured the command line options into -d (disable) and -e 4649(enable) options. 4650 4651---------------------------------------- 465228 April 2010. Summary of changes for version 20100428: 4653 46541) ACPI CA Core Subsystem: 4655 4656Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 4657including FADT-based and GPE Block Devices, execute any _PRW methods in 4658the 4659new table, and process any _Lxx/_Exx GPE methods in the new table. Any 4660runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 4661immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 4662Devices. Provides compatibility with other ACPI implementations. Two new 4663files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 4664Moore. 4665 4666Fixed a regression introduced in version 20100331 within the table 4667manager 4668where initial table loading could fail. This was introduced in the fix 4669for 4670AcpiReallocateRootTable. Also, renamed some of fields in the table 4671manager 4672data structures to clarify their meaning and use. 4673 4674Fixed a possible allocation overrun during internal object copy in 4675AcpiUtCopySimpleObject. The original code did not correctly handle the 4676case 4677where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 4678847. 4679 4680Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 4681possible access beyond end-of-allocation. Also, now fully validate 4682descriptor 4683(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 4684 4685Example Code and Data Size: These are the sizes for the OS-independent 4686acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4687debug version of the code includes the debug output trace mechanism and 4688has a 4689much larger code and data size. 4690 4691 Previous Release: 4692 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4693 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4694 Current Release: 4695 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4696 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4697 46982) iASL Compiler/Disassembler and Tools: 4699 4700iASL: Implemented Min/Max/Len/Gran validation for address resource 4701descriptors. This change implements validation for the address fields 4702that 4703are common to all address-type resource descriptors. These checks are 4704implemented: Checks for valid Min/Max, length within the Min/Max window, 4705valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 4706per 4707table 6-40 in the ACPI 4.0a specification. Also split the large 4708aslrestype1.c 4709and aslrestype2.c files into five new files. ACPICA BZ 840. 4710 4711iASL: Added support for the _Wxx predefined names. This support was 4712missing 4713and these names were not recognized by the compiler as valid predefined 4714names. ACPICA BZ 851. 4715 4716iASL: Added an error for all predefined names that are defined to return 4717no 4718value and thus must be implemented as Control Methods. These include all 4719of 4720the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 4721names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 4722 4723iASL: Implemented the -ts option to emit hex AML data in ASL format, as 4724an 4725ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 4726be 4727dynamically loaded via the Load() operator. Also cleaned up output for 4728the 4729- 4730ta and -tc options. ACPICA BZ 853. 4731 4732Tests: Added a new file with examples of extended iASL error checking. 4733Demonstrates the advanced error checking ability of the iASL compiler. 4734Available at tests/misc/badcode.asl. 4735 4736---------------------------------------- 473731 March 2010. Summary of changes for version 20100331: 4738 47391) ACPI CA Core Subsystem: 4740 4741Completed a major update for the GPE support in order to improve support 4742for 4743shared GPEs and to simplify both host OS and ACPICA code. Added a 4744reference 4745count mechanism to support shared GPEs that require multiple device 4746drivers. 4747Several external interfaces have changed. One external interface has been 4748removed. One new external interface was added. Most of the GPE external 4749interfaces now use the GPE spinlock instead of the events mutex (and the 4750Flags parameter for many GPE interfaces has been removed.) See the 4751updated 4752ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 4753Rafael 4754Wysocki. ACPICA BZ 831. 4755 4756Changed: 4757 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 4758Removed: 4759 AcpiSetGpeType 4760New: 4761 AcpiSetGpe 4762 4763Implemented write support for DataTable operation regions. These regions 4764are 4765defined via the DataTableRegion() operator. Previously, only read support 4766was 4767implemented. The ACPI specification allows DataTableRegions to be 4768read/write, 4769however. 4770 4771Implemented a new subsystem option to force a copy of the DSDT to local 4772memory. Optionally copy the entire DSDT to local memory (instead of 4773simply 4774mapping it.) There are some (albeit very rare) BIOSs that corrupt or 4775replace 4776the original DSDT, creating the need for this option. Default is FALSE, 4777do 4778not copy the DSDT. 4779 4780Implemented detection of a corrupted or replaced DSDT. This change adds 4781support to detect a DSDT that has been corrupted and/or replaced from 4782outside 4783the OS (by firmware). This is typically catastrophic for the system, but 4784has 4785been seen on some machines. Once this problem has been detected, the DSDT 4786copy option can be enabled via system configuration. Lin Ming, Bob Moore. 4787 4788Fixed two problems with AcpiReallocateRootTable during the root table 4789copy. 4790When copying the root table to the new allocation, the length used was 4791incorrect. The new size was used instead of the current table size, 4792meaning 4793too much data was copied. Also, the count of available slots for ACPI 4794tables 4795was not set correctly. Alexey Starikovskiy, Bob Moore. 4796 4797Example Code and Data Size: These are the sizes for the OS-independent 4798acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4799debug version of the code includes the debug output trace mechanism and 4800has a 4801much larger code and data size. 4802 4803 Previous Release: 4804 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4805 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4806 Current Release: 4807 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4808 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4809 48102) iASL Compiler/Disassembler and Tools: 4811 4812iASL: Implement limited typechecking for values returned from predefined 4813control methods. The type of any returned static (unnamed) object is now 4814validated. For example, Return(1). ACPICA BZ 786. 4815 4816iASL: Fixed a predefined name object verification regression. Fixes a 4817problem 4818introduced in version 20100304. An error is incorrectly generated if a 4819predefined name is declared as a static named object with a value defined 4820using the keywords "Zero", "One", or "Ones". Lin Ming. 4821 4822iASL: Added Windows 7 support for the -g option (get local ACPI tables) 4823by 4824reducing the requested registry access rights. ACPICA BZ 842. 4825 4826Disassembler: fixed a possible fault when generating External() 4827statements. 4828Introduced in commit ae7d6fd: Properly handle externals with parent- 4829prefix 4830(carat). Fixes a string length allocation calculation. Lin Ming. 4831 4832---------------------------------------- 483304 March 2010. Summary of changes for version 20100304: 4834 48351) ACPI CA Core Subsystem: 4836 4837Fixed a possible problem with the AML Mutex handling function 4838AcpiExReleaseMutex where the function could fault under the very rare 4839condition when the interpreter has blocked, the interpreter lock is 4840released, 4841the interpreter is then reentered via the same thread, and attempts to 4842acquire an AML mutex that was previously acquired. FreeBSD report 140979. 4843Lin 4844Ming. 4845 4846Implemented additional configuration support for the AML "Debug Object". 4847Output from the debug object can now be enabled via a global variable, 4848AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 4849debugging. 4850This debug output is now available in the release version of ACPICA 4851instead 4852of just the debug version. Also, the entire debug output module can now 4853be 4854configured out of the ACPICA build if desired. One new file added, 4855executer/exdebug.c. Lin Ming, Bob Moore. 4856 4857Added header support for the ACPI MCHI table (Management Controller Host 4858Interface Table). This table was added in ACPI 4.0, but the defining 4859document 4860has only recently become available. 4861 4862Standardized output of integer values for ACPICA warnings/errors. Always 4863use 48640x prefix for hex output, always use %u for unsigned integer decimal 4865output. 4866Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 4867400 4868invocations.) These invocations were converted from the original 4869ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 4870 4871Example Code and Data Size: These are the sizes for the OS-independent 4872acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4873debug version of the code includes the debug output trace mechanism and 4874has a 4875much larger code and data size. 4876 4877 Previous Release: 4878 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4879 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4880 Current Release: 4881 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4882 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4883 48842) iASL Compiler/Disassembler and Tools: 4885 4886iASL: Implemented typechecking support for static (non-control method) 4887predefined named objects that are declared with the Name() operator. For 4888example, the type of this object is now validated to be of type Integer: 4889Name(_BBN, 1). This change migrates the compiler to using the core 4890predefined 4891name table instead of maintaining a local version. Added a new file, 4892aslpredef.c. ACPICA BZ 832. 4893 4894Disassembler: Added support for the ACPI 4.0 MCHI table. 4895 4896---------------------------------------- 489721 January 2010. Summary of changes for version 20100121: 4898 48991) ACPI CA Core Subsystem: 4900 4901Added the 2010 copyright to all module headers and signons. This affects 4902virtually every file in the ACPICA core subsystem, the iASL compiler, the 4903tools/utilities, and the test suites. 4904 4905Implemented a change to the AcpiGetDevices interface to eliminate 4906unnecessary 4907invocations of the _STA method. In the case where a specific _HID is 4908requested, do not run _STA until a _HID match is found. This eliminates 4909potentially dozens of _STA calls during a search for a particular 4910device/HID, 4911which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 4912 4913Implemented an additional repair for predefined method return values. 4914Attempt 4915to repair unexpected NULL elements within returned Package objects. 4916Create 4917an 4918Integer of value zero, a NULL String, or a zero-length Buffer as 4919appropriate. 4920ACPICA BZ 818. Lin Ming, Bob Moore. 4921 4922Removed the obsolete ACPI_INTEGER data type. This type was introduced as 4923the 4924code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 4925(with 492664-bit AML integers). It is now obsolete and this change removes it from 4927the 4928ACPICA code base, replaced by UINT64. The original typedef has been 4929retained 4930for now for compatibility with existing device driver code. ACPICA BZ 4931824. 4932 4933Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 4934in 4935the parse tree object. 4936 4937Added additional warning options for the gcc-4 generation. Updated the 4938source 4939accordingly. This includes some code restructuring to eliminate 4940unreachable 4941code, elimination of some gotos, elimination of unused return values, 4942some 4943additional casting, and removal of redundant declarations. 4944 4945Example Code and Data Size: These are the sizes for the OS-independent 4946acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4947debug version of the code includes the debug output trace mechanism and 4948has a 4949much larger code and data size. 4950 4951 Previous Release: 4952 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4953 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4954 Current Release: 4955 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4956 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4957 49582) iASL Compiler/Disassembler and Tools: 4959 4960No functional changes for this release. 4961 4962---------------------------------------- 496314 December 2009. Summary of changes for version 20091214: 4964 49651) ACPI CA Core Subsystem: 4966 4967Enhanced automatic data type conversions for predefined name repairs. 4968This 4969change expands the automatic repairs/conversions for predefined name 4970return 4971values to make Integers, Strings, and Buffers fully interchangeable. 4972Also, 4973a 4974Buffer can be converted to a Package of Integers if necessary. The 4975nsrepair.c 4976module was completely restructured. Lin Ming, Bob Moore. 4977 4978Implemented automatic removal of null package elements during predefined 4979name 4980repairs. This change will automatically remove embedded and trailing NULL 4981package elements from returned package objects that are defined to 4982contain 4983a 4984variable number of sub-packages. The driver is then presented with a 4985package 4986with no null elements to deal with. ACPICA BZ 819. 4987 4988Implemented a repair for the predefined _FDE and _GTM names. The expected 4989return value for both names is a Buffer of 5 DWORDs. This repair fixes 4990two 4991possible problems (both seen in the field), where a package of integers 4992is 4993returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 4994Kim. 4995 4996Implemented additional module-level code support. This change will 4997properly 4998execute module-level code that is not at the root of the namespace (under 4999a 5000Device object, etc.). Now executes the code within the current scope 5001instead 5002of the root. ACPICA BZ 762. Lin Ming. 5003 5004Fixed possible mutex acquisition errors when running _REG methods. Fixes 5005a 5006problem where mutex errors can occur when running a _REG method that is 5007in 5008the same scope as a method-defined operation region or an operation 5009region 5010under a module-level IF block. This type of code is rare, so the problem 5011has 5012not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 5013 5014Fixed a possible memory leak during module-level code execution. An 5015object 5016could be leaked for each block of executed module-level code if the 5017interpreter slack mode is enabled This change deletes any implicitly 5018returned 5019object from the module-level code block. Lin Ming. 5020 5021Removed messages for successful predefined repair(s). The repair 5022mechanism 5023was considered too wordy. Now, messages are only unconditionally emitted 5024if 5025the return object cannot be repaired. Existing messages for successful 5026repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 5027827. 5028 5029Example Code and Data Size: These are the sizes for the OS-independent 5030acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5031debug version of the code includes the debug output trace mechanism and 5032has a 5033much larger code and data size. 5034 5035 Previous Release: 5036 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5037 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5038 Current Release: 5039 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5040 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5041 50422) iASL Compiler/Disassembler and Tools: 5043 5044iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 5045files 5046were no longer automatically removed at the termination of the compile. 5047 5048acpiexec: Implemented the -f option to specify default region fill value. 5049This option specifies the value used to initialize buffers that simulate 5050operation regions. Default value is zero. Useful for debugging problems 5051that 5052depend on a specific initial value for a region or field. 5053 5054---------------------------------------- 505512 November 2009. Summary of changes for version 20091112: 5056 50571) ACPI CA Core Subsystem: 5058 5059Implemented a post-order callback to AcpiWalkNamespace. The existing 5060interface only has a pre-order callback. This change adds an additional 5061parameter for a post-order callback which will be more useful for bus 5062scans. 5063ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 5064 5065Modified the behavior of the operation region memory mapping cache for 5066SystemMemory. Ensure that the memory mappings created for operation 5067regions 5068do not cross 4K page boundaries. Crossing a page boundary while mapping 5069regions can cause kernel warnings on some hosts if the pages have 5070different 5071attributes. Such regions are probably BIOS bugs, and this is the 5072workaround. 5073Linux BZ 14445. Lin Ming. 5074 5075Implemented an automatic repair for predefined methods that must return 5076sorted lists. This change will repair (by sorting) packages returned by 5077_ALR, 5078_PSS, and _TSS. Drivers can now assume that the packages are correctly 5079sorted 5080and do not contain NULL package elements. Adds one new file, 5081namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 5082 5083Fixed a possible fault during predefined name validation if a return 5084Package 5085object contains NULL elements. Also adds a warning if a NULL element is 5086followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 5087may 5088include repair or removal of all such NULL elements where possible. 5089 5090Implemented additional module-level executable AML code support. This 5091change 5092will execute module-level code that is not at the root of the namespace 5093(under a Device object, etc.) at table load time. Module-level executable 5094AML 5095code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 5096 5097Implemented a new internal function to create Integer objects. This 5098function 5099simplifies miscellaneous object creation code. ACPICA BZ 823. 5100 5101Reduced the severity of predefined repair messages, Warning to Info. 5102Since 5103the object was successfully repaired, a warning is too severe. Reduced to 5104an 5105info message for now. These messages may eventually be changed to debug- 5106only. 5107ACPICA BZ 812. 5108 5109Example Code and Data Size: These are the sizes for the OS-independent 5110acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5111debug version of the code includes the debug output trace mechanism and 5112has a 5113much larger code and data size. 5114 5115 Previous Release: 5116 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5117 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5118 Current Release: 5119 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5120 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5121 51222) iASL Compiler/Disassembler and Tools: 5123 5124iASL: Implemented Switch() with While(1) so that Break works correctly. 5125This 5126change correctly implements the Switch operator with a surrounding 5127While(1) 5128so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 5129 5130iASL: Added a message if a package initializer list is shorter than 5131package 5132length. Adds a new remark for a Package() declaration if an initializer 5133list 5134exists, but is shorter than the declared length of the package. Although 5135technically legal, this is probably a coding error and it is seen in the 5136field. ACPICA BZ 815. Lin Ming, Bob Moore. 5137 5138iASL: Fixed a problem where the compiler could fault after the maximum 5139number 5140of errors was reached (200). 5141 5142acpixtract: Fixed a possible warning for pointer cast if the compiler 5143warning 5144level set very high. 5145 5146---------------------------------------- 514713 October 2009. Summary of changes for version 20091013: 5148 51491) ACPI CA Core Subsystem: 5150 5151Fixed a problem where an Operation Region _REG method could be executed 5152more 5153than once. If a custom address space handler is installed by the host 5154before 5155the "initialize operation regions" phase of the ACPICA initialization, 5156any 5157_REG methods for that address space could be executed twice. This change 5158fixes the problem. ACPICA BZ 427. Lin Ming. 5159 5160Fixed a possible memory leak for the Scope() ASL operator. When the exact 5161invocation of "Scope(\)" is executed (change scope to root), one internal 5162operand object was leaked. Lin Ming. 5163 5164Implemented a run-time repair for the _MAT predefined method. If the _MAT 5165return value is defined as a Field object in the AML, and the field 5166size is less than or equal to the default width of an integer (32 or 516764),_MAT 5168can incorrectly return an Integer instead of a Buffer. ACPICA now 5169automatically repairs this problem. ACPICA BZ 810. 5170 5171Implemented a run-time repair for the _BIF and _BIX predefined methods. 5172The 5173"OEM Information" field is often incorrectly returned as an Integer with 5174value zero if the field is not supported by the platform. This is due to 5175an 5176ambiguity in the ACPI specification. The field should always be a string. 5177ACPICA now automatically repairs this problem by returning a NULL string 5178within the returned Package. ACPICA BZ 807. 5179 5180Example Code and Data Size: These are the sizes for the OS-independent 5181acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5182debug version of the code includes the debug output trace mechanism and 5183has a 5184much larger code and data size. 5185 5186 Previous Release: 5187 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5188 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5189 Current Release: 5190 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5191 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5192 51932) iASL Compiler/Disassembler and Tools: 5194 5195Disassembler: Fixed a problem where references to external symbols that 5196contained one or more parent-prefixes (carats) were not handled 5197correctly, 5198possibly causing a fault. ACPICA BZ 806. Lin Ming. 5199 5200Disassembler: Restructured the code so that all functions that handle 5201external symbols are in a single module. One new file is added, 5202common/dmextern.c. 5203 5204AML Debugger: Added a max count argument for the Batch command (which 5205executes multiple predefined methods within the namespace.) 5206 5207iASL: Updated the compiler documentation (User Reference.) Available at 5208http://www.acpica.org/documentation/. ACPICA BZ 750. 5209 5210AcpiXtract: Updated for Lint and other formatting changes. Close all open 5211files. 5212 5213---------------------------------------- 521403 September 2009. Summary of changes for version 20090903: 5215 52161) ACPI CA Core Subsystem: 5217 5218For Windows Vista compatibility, added the automatic execution of an _INI 5219method located at the namespace root (\_INI). This method is executed at 5220table load time. This support is in addition to the automatic execution 5221of 5222\_SB._INI. Lin Ming. 5223 5224Fixed a possible memory leak in the interpreter for AML package objects 5225if 5226the package initializer list is longer than the defined size of the 5227package. 5228This apparently can only happen if the BIOS changes the package size on 5229the 5230fly (seen in a _PSS object), as ASL compilers do not allow this. The 5231interpreter will truncate the package to the defined size (and issue an 5232error 5233message), but previously could leave the extra objects undeleted if they 5234were 5235pre-created during the argument processing (such is the case if the 5236package 5237consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 5238 5239Fixed a problem seen when a Buffer or String is stored to itself via ASL. 5240This has been reported in the field. Previously, ACPICA would zero out 5241the 5242buffer/string. Now, the operation is treated as a noop. Provides Windows 5243compatibility. ACPICA BZ 803. Lin Ming. 5244 5245Removed an extraneous error message for ASL constructs of the form 5246Store(LocalX,LocalX) when LocalX is uninitialized. These curious 5247statements 5248are seen in many BIOSs and are once again treated as NOOPs and no error 5249is 5250emitted when they are encountered. ACPICA BZ 785. 5251 5252Fixed an extraneous warning message if a _DSM reserved method returns a 5253Package object. _DSM can return any type of object, so validation on the 5254return type cannot be performed. ACPICA BZ 802. 5255 5256Example Code and Data Size: These are the sizes for the OS-independent 5257acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5258debug version of the code includes the debug output trace mechanism and 5259has a 5260much larger code and data size. 5261 5262 Previous Release: 5263 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5264 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5265 Current Release: 5266 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5267 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5268 52692) iASL Compiler/Disassembler and Tools: 5270 5271iASL: Fixed a problem with the use of the Alias operator and Resource 5272Templates. The correct alias is now constructed and no error is emitted. 5273ACPICA BZ 738. 5274 5275iASL: Implemented the -I option to specify additional search directories 5276for 5277include files. Allows multiple additional search paths for include files. 5278Directories are searched in the order specified on the command line 5279(after 5280the local directory is searched.) ACPICA BZ 800. 5281 5282iASL: Fixed a problem where the full pathname for include files was not 5283emitted for warnings/errors. This caused the IDE support to not work 5284properly. ACPICA BZ 765. 5285 5286iASL: Implemented the -@ option to specify a Windows-style response file 5287containing additional command line options. ACPICA BZ 801. 5288 5289AcpiExec: Added support to load multiple AML files simultaneously (such 5290as 5291a 5292DSDT and multiple SSDTs). Also added support for wildcards within the AML 5293pathname. These features allow all machine tables to be easily loaded and 5294debugged together. ACPICA BZ 804. 5295 5296Disassembler: Added missing support for disassembly of HEST table Error 5297Bank 5298subtables. 5299 5300---------------------------------------- 530130 July 2009. Summary of changes for version 20090730: 5302 5303The ACPI 4.0 implementation for ACPICA is complete with this release. 5304 53051) ACPI CA Core Subsystem: 5306 5307ACPI 4.0: Added header file support for all new and changed ACPI tables. 5308Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 5309new 5310for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 5311BERT, 5312EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 5313There 5314have been some ACPI 4.0 changes to other existing tables. Split the large 5315actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 5316 5317ACPI 4.0: Implemented predefined name validation for all new names. There 5318are 531931 new names in ACPI 4.0. The predefined validation module was split into 5320two 5321files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 5322 5323Implemented support for so-called "module-level executable code". This is 5324executable AML code that exists outside of any control method and is 5325intended 5326to be executed at table load time. Although illegal since ACPI 2.0, this 5327type 5328of code still exists and is apparently still being created. Blocks of 5329this 5330code are now detected and executed as intended. Currently, the code 5331blocks 5332must exist under either an If, Else, or While construct; these are the 5333typical cases seen in the field. ACPICA BZ 762. Lin Ming. 5334 5335Implemented an automatic dynamic repair for predefined names that return 5336nested Package objects. This applies to predefined names that are defined 5337to 5338return a variable-length Package of sub-packages. If the number of sub- 5339packages is one, BIOS code is occasionally seen that creates a simple 5340single 5341package with no sub-packages. This code attempts to fix the problem by 5342wrapping a new package object around the existing package. These methods 5343can 5344be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 5345BZ 5346790. 5347 5348Fixed a regression introduced in 20090625 for the AcpiGetDevices 5349interface. 5350The _HID/_CID matching was broken and no longer matched IDs correctly. 5351ACPICA 5352BZ 793. 5353 5354Fixed a problem with AcpiReset where the reset would silently fail if the 5355register was one of the protected I/O ports. AcpiReset now bypasses the 5356port 5357validation mechanism. This may eventually be driven into the 5358AcpiRead/Write 5359interfaces. 5360 5361Fixed a regression related to the recent update of the AcpiRead/Write 5362interfaces. A sleep/suspend could fail if the optional PM2 Control 5363register 5364does not exist during an attempt to write the Bus Master Arbitration bit. 5365(However, some hosts already delete the code that writes this bit, and 5366the 5367code may in fact be obsolete at this date.) ACPICA BZ 799. 5368 5369Fixed a problem where AcpiTerminate could fault if inadvertently called 5370twice 5371in succession. ACPICA BZ 795. 5372 5373Example Code and Data Size: These are the sizes for the OS-independent 5374acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5375debug version of the code includes the debug output trace mechanism and 5376has a 5377much larger code and data size. 5378 5379 Previous Release: 5380 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5381 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5382 Current Release: 5383 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5384 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5385 53862) iASL Compiler/Disassembler and Tools: 5387 5388ACPI 4.0: Implemented disassembler support for all new ACPI tables and 5389changes to existing tables. ACPICA BZ 775. 5390 5391---------------------------------------- 539225 June 2009. Summary of changes for version 20090625: 5393 5394The ACPI 4.0 Specification was released on June 16 and is available at 5395www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 5396continue for the next few releases. 5397 53981) ACPI CA Core Subsystem: 5399 5400ACPI 4.0: Implemented interpreter support for the IPMI operation region 5401address space. Includes support for bi-directional data buffers and an 5402IPMI 5403address space handler (to be installed by an IPMI device driver.) ACPICA 5404BZ 5405773. Lin Ming. 5406 5407ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 5408Includes 5409support in both the header files and the disassembler. 5410 5411Completed a major update for the AcpiGetObjectInfo external interface. 5412Changes include: 5413 - Support for variable, unlimited length HID, UID, and CID strings. 5414 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 5415etc.) 5416 - Call the _SxW power methods on behalf of a device object. 5417 - Determine if a device is a PCI root bridge. 5418 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 5419These changes will require an update to all callers of this interface. 5420See 5421the updated ACPICA Programmer Reference for details. One new source file 5422has 5423been added - utilities/utids.c. ACPICA BZ 368, 780. 5424 5425Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 5426transfers. The Value parameter has been extended from 32 bits to 64 bits 5427in 5428order to support new ACPI 4.0 tables. These changes will require an 5429update 5430to 5431all callers of these interfaces. See the ACPICA Programmer Reference for 5432details. ACPICA BZ 768. 5433 5434Fixed several problems with AcpiAttachData. The handler was not invoked 5435when 5436the host node was deleted. The data sub-object was not automatically 5437deleted 5438when the host node was deleted. The interface to the handler had an 5439unused 5440parameter, this was removed. ACPICA BZ 778. 5441 5442Enhanced the function that dumps ACPI table headers. All non-printable 5443characters in the string fields are now replaced with '?' (Signature, 5444OemId, 5445OemTableId, and CompilerId.) ACPI tables with non-printable characters in 5446these fields are occasionally seen in the field. ACPICA BZ 788. 5447 5448Fixed a problem with predefined method repair code where the code that 5449attempts to repair/convert an object of incorrect type is only executed 5450on 5451the first time the predefined method is called. The mechanism that 5452disables 5453warnings on subsequent calls was interfering with the repair mechanism. 5454ACPICA BZ 781. 5455 5456Fixed a possible memory leak in the predefined validation/repair code 5457when 5458a 5459buffer is automatically converted to an expected string object. 5460 5461Removed obsolete 16-bit files from the distribution and from the current 5462git 5463tree head. ACPICA BZ 776. 5464 5465Example Code and Data Size: These are the sizes for the OS-independent 5466acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5467debug version of the code includes the debug output trace mechanism and 5468has a 5469much larger code and data size. 5470 5471 Previous Release: 5472 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5473 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5474 Current Release: 5475 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5476 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5477 54782) iASL Compiler/Disassembler and Tools: 5479 5480ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 5481operation region keyword. ACPICA BZ 771, 772. Lin Ming. 5482 5483ACPI 4.0: iASL - implemented compile-time validation support for all new 5484predefined names and control methods (31 total). ACPICA BZ 769. 5485 5486---------------------------------------- 548721 May 2009. Summary of changes for version 20090521: 5488 54891) ACPI CA Core Subsystem: 5490 5491Disabled the preservation of the SCI enable bit in the PM1 control 5492register. 5493The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 5494to 5495be 5496a "preserved" bit - "OSPM always preserves this bit position", section 54974.7.3.2.1. However, some machines fail if this bit is in fact preserved 5498because the bit needs to be explicitly set by the OS as a workaround. No 5499machines fail if the bit is not preserved. Therefore, ACPICA no longer 5500attempts to preserve this bit. 5501 5502Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 5503incorrectly formed _PRT package could cause a fault. Added validation to 5504ensure that each package element is actually a sub-package. 5505 5506Implemented a new interface to install or override a single control 5507method, 5508AcpiInstallMethod. This interface is useful when debugging in order to 5509repair 5510an existing method or to install a missing method without having to 5511override 5512the entire ACPI table. See the ACPICA Programmer Reference for use and 5513examples. Lin Ming, Bob Moore. 5514 5515Fixed several reference count issues with the DdbHandle object that is 5516created from a Load or LoadTable operator. Prevent premature deletion of 5517the 5518object. Also, mark the object as invalid once the table has been 5519unloaded. 5520This is needed because the handle itself may not be deleted after the 5521table 5522unload, depending on whether it has been stored in a named object by the 5523caller. Lin Ming. 5524 5525Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 5526mutexes of the same sync level are acquired but then not released in 5527strict 5528opposite order, the internally maintained Current Sync Level becomes 5529confused 5530and can cause subsequent execution errors. ACPICA BZ 471. 5531 5532Changed the allowable release order for ASL mutex objects. The ACPI 4.0 5533specification has been changed to make the SyncLevel for mutex objects 5534more 5535useful. When releasing a mutex, the SyncLevel of the mutex must now be 5536the 5537same as the current sync level. This makes more sense than the previous 5538rule 5539(SyncLevel less than or equal). This change updates the code to match the 5540specification. 5541 5542Fixed a problem with the local version of the AcpiOsPurgeCache function. 5543The 5544(local) cache must be locked during all cache object deletions. Andrew 5545Baumann. 5546 5547Updated the Load operator to use operation region interfaces. This 5548replaces 5549direct memory mapping with region access calls. Now, all region accesses 5550go 5551through the installed region handler as they should. 5552 5553Simplified and optimized the NsGetNextNode function. Reduced parameter 5554count 5555and reduced code for this frequently used function. 5556 5557Example Code and Data Size: These are the sizes for the OS-independent 5558acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5559debug version of the code includes the debug output trace mechanism and 5560has a 5561much larger code and data size. 5562 5563 Previous Release: 5564 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5565 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5566 Current Release: 5567 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5568 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5569 55702) iASL Compiler/Disassembler and Tools: 5571 5572Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 5573problems 5574with sub-table disassembly and handling invalid sub-tables. Attempt 5575recovery 5576after an invalid sub-table ID. 5577 5578---------------------------------------- 557922 April 2009. Summary of changes for version 20090422: 5580 55811) ACPI CA Core Subsystem: 5582 5583Fixed a compatibility issue with the recently released I/O port 5584protection 5585mechanism. For windows compatibility, 1) On a port protection violation, 5586simply ignore the request and do not return an exception (allow the 5587control 5588method to continue execution.) 2) If only part of the request overlaps a 5589protected port, read/write the individual ports that are not protected. 5590Linux 5591BZ 13036. Lin Ming 5592 5593Enhanced the execution of the ASL/AML BreakPoint operator so that it 5594actually 5595breaks into the AML debugger if the debugger is present. This matches the 5596ACPI-defined behavior. 5597 5598Fixed several possible warnings related to the use of the configurable 5599ACPI_THREAD_ID. This type can now be configured as either an integer or a 5600pointer with no warnings. Also fixes several warnings in printf-like 5601statements for the 64-bit build when the type is configured as a pointer. 5602ACPICA BZ 766, 767. 5603 5604Fixed a number of possible warnings when compiling with gcc 4+ (depending 5605on 5606warning options.) Examples include printf formats, aliasing, unused 5607globals, 5608missing prototypes, missing switch default statements, use of non-ANSI 5609library functions, use of non-ANSI constructs. See generate/unix/Makefile 5610for 5611a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 5612 5613Example Code and Data Size: These are the sizes for the OS-independent 5614acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5615debug version of the code includes the debug output trace mechanism and 5616has a 5617much larger code and data size. 5618 5619 Previous Release: 5620 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5621 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5622 Current Release: 5623 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5624 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5625 56262) iASL Compiler/Disassembler and Tools: 5627 5628iASL: Fixed a generation warning from Bison 2.3 and fixed several 5629warnings 5630on 5631the 64-bit build. 5632 5633iASL: Fixed a problem where the Unix/Linux versions of the compiler could 5634not 5635correctly digest Windows/DOS formatted files (with CR/LF). 5636 5637iASL: Added a new option for "quiet mode" (-va) that produces only the 5638compilation summary, not individual errors and warnings. Useful for large 5639batch compilations. 5640 5641AcpiExec: Implemented a new option (-z) to enable a forced 5642semaphore/mutex 5643timeout that can be used to detect hang conditions during execution of 5644AML 5645code (includes both internal semaphores and AML-defined mutexes and 5646events.) 5647 5648Added new makefiles for the generation of acpica in a generic unix-like 5649environment. These makefiles are intended to generate the acpica tools 5650and 5651utilities from the original acpica git source tree structure. 5652 5653Test Suites: Updated and cleaned up the documentation files. Updated the 5654copyrights to 2009, affecting all source files. Use the new version of 5655iASL 5656with quiet mode. Increased the number of available semaphores in the 5657Windows 5658OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 5659added 5660an alternate implementation of the semaphore timeout to allow aslts to 5661execute fully on Cygwin. 5662 5663---------------------------------------- 566420 March 2009. Summary of changes for version 20090320: 5665 56661) ACPI CA Core Subsystem: 5667 5668Fixed a possible race condition between AcpiWalkNamespace and dynamic 5669table 5670unloads. Added a reader/writer locking mechanism to allow multiple 5671concurrent 5672namespace walks (readers), but block a dynamic table unload until it can 5673gain 5674exclusive write access to the namespace. This fixes a problem where a 5675table 5676unload could (possibly catastrophically) delete the portion of the 5677namespace 5678that is currently being examined by a walk. Adds a new file, utlock.c, 5679that 5680implements the reader/writer lock mechanism. ACPICA BZ 749. 5681 5682Fixed a regression introduced in version 20090220 where a change to the 5683FADT 5684handling could cause the ACPICA subsystem to access non-existent I/O 5685ports. 5686 5687Modified the handling of FADT register and table (FACS/DSDT) addresses. 5688The 5689FADT can contain both 32-bit and 64-bit versions of these addresses. 5690Previously, the 64-bit versions were favored, meaning that if both 32 and 569164 5692versions were valid, but not equal, the 64-bit version was used. This was 5693found to cause some machines to fail. Now, in this case, the 32-bit 5694version 5695is used instead. This now matches the Windows behavior. 5696 5697Implemented a new mechanism to protect certain I/O ports. Provides 5698Microsoft 5699compatibility and protects the standard PC I/O ports from access via AML 5700code. Adds a new file, hwvalid.c 5701 5702Fixed a possible extraneous warning message from the FADT support. The 5703message warns of a 32/64 length mismatch between the legacy and GAS 5704definitions for a register. 5705 5706Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 5707is 5708made obsolete by the port protection mechanism above. It was previously 5709used 5710to validate the entire address range of an operation region, which could 5711be 5712incorrect if the range included illegal ports, but fields within the 5713operation region did not actually access those ports. Validation is now 5714performed on a per-field basis instead of the entire region. 5715 5716Modified the handling of the PM1 Status Register ignored bit (bit 11.) 5717Ignored bits must be "preserved" according to the ACPI spec. Usually, 5718this 5719means a read/modify/write when writing to the register. However, for 5720status 5721registers, writing a one means clear the event. Writing a zero means 5722preserve 5723the event (do not clear.) This behavior is clarified in the ACPI 4.0 5724spec, 5725and the ACPICA code now simply always writes a zero to the ignored bit. 5726 5727Modified the handling of ignored bits for the PM1 A/B Control Registers. 5728As 5729per the ACPI specification, for the control registers, preserve 5730(read/modify/write) all bits that are defined as either reserved or 5731ignored. 5732 5733Updated the handling of write-only bits in the PM1 A/B Control Registers. 5734When reading the register, zero the write-only bits as per the ACPI spec. 5735ACPICA BZ 443. Lin Ming. 5736 5737Removed "Linux" from the list of supported _OSI strings. Linux no longer 5738wants to reply true to this request. The Windows strings are the only 5739paths 5740through the AML that are tested and known to work properly. 5741 5742 Previous Release: 5743 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5744 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5745 Current Release: 5746 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5747 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5748 57492) iASL Compiler/Disassembler and Tools: 5750 5751Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 5752and 5753aetables.c 5754 5755---------------------------------------- 575620 February 2009. Summary of changes for version 20090220: 5757 57581) ACPI CA Core Subsystem: 5759 5760Optimized the ACPI register locking. Removed locking for reads from the 5761ACPI 5762bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 5763is 5764not required when reading the single-bit registers. The 5765AcpiGetRegisterUnlocked function is no longer needed and has been 5766removed. 5767This will improve performance for reads on these registers. ACPICA BZ 5768760. 5769 5770Fixed the parameter validation for AcpiRead/Write. Now return 5771AE_BAD_PARAMETER if the input register pointer is null, and 5772AE_BAD_ADDRESS 5773if 5774the register has an address of zero. Previously, these cases simply 5775returned 5776AE_OK. For optional registers such as PM1B status/enable/control, the 5777caller 5778should check for a valid register address before calling. ACPICA BZ 748. 5779 5780Renamed the external ACPI bit register access functions. Renamed 5781AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 5782functions. The new names are AcpiReadBitRegister and 5783AcpiWriteBitRegister. 5784Also, restructured the code for these functions by simplifying the code 5785path 5786and condensing duplicate code to reduce code size. 5787 5788Added new functions to transparently handle the possibly split PM1 A/B 5789registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 5790functions 5791now handle the split registers for PM1 Status, Enable, and Control. 5792ACPICA 5793BZ 5794746. 5795 5796Added a function to handle the PM1 control registers, 5797AcpiHwWritePm1Control. 5798This function writes both of the PM1 control registers (A/B). These 5799registers 5800are different than the PM1 A/B status and enable registers in that 5801different 5802values can be written to the A/B registers. Most notably, the SLP_TYP 5803bits 5804can be different, as per the values returned from the _Sx predefined 5805methods. 5806 5807Removed an extra register write within AcpiHwClearAcpiStatus. This 5808function 5809was writing an optional PM1B status register twice. The existing call to 5810the 5811low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 5812A/B 5813register. ACPICA BZ 751. 5814 5815Split out the PM1 Status registers from the FADT. Added new globals for 5816these 5817registers (A/B), similar to the way the PM1 Enable registers are handled. 5818Instead of overloading the FADT Event Register blocks. This makes the 5819code 5820clearer and less prone to error. 5821 5822Fixed the warning message for when the platform contains too many ACPI 5823tables 5824for the default size of the global root table data structure. The 5825calculation 5826for the truncation value was incorrect. 5827 5828Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 5829obsolete macro, since it is now a simple reference to ->common.type. 5830There 5831were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 5832 5833Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 5834TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 5835simply SLEEP_TYPE. ACPICA BZ 754. 5836 5837Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 5838function is only needed on 64-bit host operating systems and is thus not 5839included for 32-bit hosts. 5840 5841Debug output: print the input and result for invocations of the _OSI 5842reserved 5843control method via the ACPI_LV_INFO debug level. Also, reduced some of 5844the 5845verbosity of this debug level. Len Brown. 5846 5847Example Code and Data Size: These are the sizes for the OS-independent 5848acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5849debug version of the code includes the debug output trace mechanism and 5850has a 5851much larger code and data size. 5852 5853 Previous Release: 5854 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5855 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5856 Current Release: 5857 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5858 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5859 58602) iASL Compiler/Disassembler and Tools: 5861 5862Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 5863various legal performance profiles. 5864 5865---------------------------------------- 586623 January 2009. Summary of changes for version 20090123: 5867 58681) ACPI CA Core Subsystem: 5869 5870Added the 2009 copyright to all module headers and signons. This affects 5871virtually every file in the ACPICA core subsystem, the iASL compiler, and 5872the tools/utilities. 5873 5874Implemented a change to allow the host to override any ACPI table, 5875including 5876dynamically loaded tables. Previously, only the DSDT could be replaced by 5877the 5878host. With this change, the AcpiOsTableOverride interface is called for 5879each 5880table found in the RSDT/XSDT during ACPICA initialization, and also 5881whenever 5882a table is dynamically loaded via the AML Load operator. 5883 5884Updated FADT flag definitions, especially the Boot Architecture flags. 5885 5886Debugger: For the Find command, automatically pad the input ACPI name 5887with 5888underscores if the name is shorter than 4 characters. This enables a 5889match 5890with the actual namespace entry which is itself padded with underscores. 5891 5892Example Code and Data Size: These are the sizes for the OS-independent 5893acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5894debug version of the code includes the debug output trace mechanism and 5895has a 5896much larger code and data size. 5897 5898 Previous Release: 5899 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5900 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5901 Current Release: 5902 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5903 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5904 59052) iASL Compiler/Disassembler and Tools: 5906 5907Fix build error under Bison-2.4. 5908 5909Dissasembler: Enhanced FADT support. Added decoding of the Boot 5910Architecture 5911flags. Now decode all flags, regardless of the FADT version. Flag output 5912includes the FADT version which first defined each flag. 5913 5914The iASL -g option now dumps the RSDT to a file (in addition to the FADT 5915and 5916DSDT). Windows only. 5917 5918---------------------------------------- 591904 December 2008. Summary of changes for version 20081204: 5920 59211) ACPI CA Core Subsystem: 5922 5923The ACPICA Programmer Reference has been completely updated and revamped 5924for 5925this release. This includes updates to the external interfaces, OSL 5926interfaces, the overview sections, and the debugger reference. 5927 5928Several new ACPICA interfaces have been implemented and documented in the 5929programmer reference: 5930AcpiReset - Writes the reset value to the FADT-defined reset register. 5931AcpiDisableAllGpes - Disable all available GPEs. 5932AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 5933AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 5934AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 5935AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 5936AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 5937 5938Most of the public ACPI hardware-related interfaces have been moved to a 5939new 5940file, components/hardware/hwxface.c 5941 5942Enhanced the FADT parsing and low-level ACPI register access: The ACPI 5943register lengths within the FADT are now used, and the low level ACPI 5944register access no longer hardcodes the ACPI register lengths. Given that 5945there may be some risk in actually trusting the FADT register lengths, a 5946run- 5947time option was added to fall back to the default hardcoded lengths if 5948the 5949FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 5950option is set to true for now, and a warning is issued if a suspicious 5951FADT 5952register length is overridden with the default value. 5953 5954Fixed a reference count issue in NsRepairObject. This problem was 5955introduced 5956in version 20081031 as part of a fix to repair Buffer objects within 5957Packages. Lin Ming. 5958 5959Added semaphore support to the Linux/Unix application OS-services layer 5960(OSL). ACPICA BZ 448. Lin Ming. 5961 5962Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 5963will 5964be implemented in the OSL, or will binary semaphores be used instead. 5965 5966Example Code and Data Size: These are the sizes for the OS-independent 5967acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5968debug version of the code includes the debug output trace mechanism and 5969has a 5970much larger code and data size. 5971 5972 Previous Release: 5973 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5974 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5975 Current Release: 5976 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5977 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5978 59792) iASL Compiler/Disassembler and Tools: 5980 5981iASL: Completed the '-e' option to include additional ACPI tables in 5982order 5983to 5984aid with disassembly and External statement generation. ACPICA BZ 742. 5985Lin 5986Ming. 5987 5988iASL: Removed the "named object in while loop" error. The compiler cannot 5989determine how many times a loop will execute. ACPICA BZ 730. 5990 5991Disassembler: Implemented support for FADT revision 2 (MS extension). 5992ACPICA 5993BZ 743. 5994 5995Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 5996MCFG). 5997 5998---------------------------------------- 599931 October 2008. Summary of changes for version 20081031: 6000 60011) ACPI CA Core Subsystem: 6002 6003Restructured the ACPICA header files into public/private. acpi.h now 6004includes 6005only the "public" acpica headers. All other acpica headers are "private" 6006and 6007should not be included by acpica users. One new file, accommon.h is used 6008to 6009include the commonly used private headers for acpica code generation. 6010Future 6011plans include moving all private headers to a new subdirectory. 6012 6013Implemented an automatic Buffer->String return value conversion for 6014predefined ACPI methods. For these methods (such as _BIF), added 6015automatic 6016conversion for return objects that are required to be a String, but a 6017Buffer 6018was found instead. This can happen when reading string battery data from 6019an 6020operation region, because it used to be difficult to convert the data 6021from 6022buffer to string from within the ASL. Ensures that the host OS is 6023provided 6024with a valid null-terminated string. Linux BZ 11822. 6025 6026Updated the FACS waking vector interfaces. Split 6027AcpiSetFirmwareWakingVector 6028into two: one for the 32-bit vector, another for the 64-bit vector. This 6029is 6030required because the host OS must setup the wake much differently for 6031each 6032vector (real vs. protected mode, etc.) and the interface itself should 6033not 6034be 6035deciding which vector to use. Also, eliminated the 6036GetFirmwareWakingVector 6037interface, as it served no purpose (only the firmware reads the vector, 6038OS 6039only writes the vector.) ACPICA BZ 731. 6040 6041Implemented a mechanism to escape infinite AML While() loops. Added a 6042loop 6043counter to force exit from AML While loops if the count becomes too 6044large. 6045This can occur in poorly written AML when the hardware does not respond 6046within a while loop and the loop does not implement a timeout. The 6047maximum 6048loop count is configurable. A new exception code is returned when a loop 6049is 6050broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 6051 6052Optimized the execution of AML While loops. Previously, a control state 6053object was allocated and freed for each execution of the loop. The 6054optimization is to simply reuse the control state for each iteration. 6055This 6056speeds up the raw loop execution time by about 5%. 6057 6058Enhanced the implicit return mechanism. For Windows compatibility, return 6059an 6060implicit integer of value zero for methods that contain no executable 6061code. 6062Such methods are seen in the field as stubs (presumably), and can cause 6063drivers to fail if they expect a return value. Lin Ming. 6064 6065Allow multiple backslashes as root prefixes in namepaths. In a fully 6066qualified namepath, allow multiple backslash prefixes. This can happen 6067(and 6068is seen in the field) because of the use of a double-backslash in strings 6069(since backslash is the escape character) causing confusion. ACPICA BZ 6070739 6071Lin Ming. 6072 6073Emit a warning if two different FACS or DSDT tables are discovered in the 6074FADT. Checks if there are two valid but different addresses for the FACS 6075and 6076DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 6077 6078Consolidated the method argument count validation code. Merged the code 6079that 6080validates control method argument counts into the predefined validation 6081module. Eliminates possible multiple warnings for incorrect argument 6082counts. 6083 6084Implemented ACPICA example code. Includes code for ACPICA initialization, 6085handler installation, and calling a control method. Available at 6086source/tools/examples. 6087 6088Added a global pointer for FACS table to simplify internal FACS access. 6089Use 6090the global pointer instead of using AcpiGetTableByIndex for each FACS 6091access. 6092This simplifies the code for the Global Lock and the Firmware Waking 6093Vector(s). 6094 6095Example Code and Data Size: These are the sizes for the OS-independent 6096acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6097debug version of the code includes the debug output trace mechanism and 6098has a 6099much larger code and data size. 6100 6101 Previous Release: 6102 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6103 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6104 Current Release: 6105 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6106 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6107 61082) iASL Compiler/Disassembler and Tools: 6109 6110iASL: Improved disassembly of external method calls. Added the -e option 6111to 6112allow the inclusion of additional ACPI tables to help with the 6113disassembly 6114of 6115method invocations and the generation of external declarations during the 6116disassembly. Certain external method invocations cannot be disassembled 6117properly without the actual declaration of the method. Use the -e option 6118to 6119include the table where the external method(s) are actually declared. 6120Most 6121useful for disassembling SSDTs that make method calls back to the master 6122DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 6123-d 6124-e dsdt.aml ssdt1.aml 6125 6126iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 6127problem where the use of an alias within a namepath would result in a not 6128found error or cause the compiler to fault. Also now allows forward 6129references from the Alias operator itself. ACPICA BZ 738. 6130 6131---------------------------------------- 613226 September 2008. Summary of changes for version 20080926: 6133 61341) ACPI CA Core Subsystem: 6135 6136Designed and implemented a mechanism to validate predefined ACPI methods 6137and 6138objects. This code validates the predefined ACPI objects (objects whose 6139names 6140start with underscore) that appear in the namespace, at the time they are 6141evaluated. The argument count and the type of the returned object are 6142validated against the ACPI specification. The purpose of this validation 6143is 6144to detect problems with the BIOS-implemented predefined ACPI objects 6145before 6146the results are returned to the ACPI-related drivers. Future enhancements 6147may 6148include actual repair of incorrect return objects where possible. Two new 6149files are nspredef.c and acpredef.h. 6150 6151Fixed a fault in the AML parser if a memory allocation fails during the 6152Op 6153completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 6154 6155Fixed an issue with implicit return compatibility. This change improves 6156the 6157implicit return mechanism to be more compatible with the MS interpreter. 6158Lin 6159Ming, ACPICA BZ 349. 6160 6161Implemented support for zero-length buffer-to-string conversions. Allow 6162zero 6163length strings during interpreter buffer-to-string conversions. For 6164example, 6165during the ToDecimalString and ToHexString operators, as well as implicit 6166conversions. Fiodor Suietov, ACPICA BZ 585. 6167 6168Fixed two possible memory leaks in the error exit paths of 6169AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 6170are 6171similar in that they use a stack of state objects in order to eliminate 6172recursion. The stack must be fully unwound and deallocated if an error 6173occurs. Lin Ming. ACPICA BZ 383. 6174 6175Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 6176global 6177ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 6178Moore ACPICA BZ 442. 6179 6180Removed the obsolete version number in module headers. Removed the 6181"$Revision" number that appeared in each module header. This version 6182number 6183was useful under SourceSafe and CVS, but has no meaning under git. It is 6184not 6185only incorrect, it could also be misleading. 6186 6187Example Code and Data Size: These are the sizes for the OS-independent 6188acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6189debug version of the code includes the debug output trace mechanism and 6190has a 6191much larger code and data size. 6192 6193 Previous Release: 6194 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6195 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6196 Current Release: 6197 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6198 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6199 6200---------------------------------------- 620129 August 2008. Summary of changes for version 20080829: 6202 62031) ACPI CA Core Subsystem: 6204 6205Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 6206Reference. Changes include the elimination of cheating on the Object 6207field 6208for the DdbHandle subtype, addition of a reference class field to 6209differentiate the various reference types (instead of an AML opcode), and 6210the 6211cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 6212 6213Reduce an error to a warning for an incorrect method argument count. 6214Previously aborted with an error if too few arguments were passed to a 6215control method via the external ACPICA interface. Now issue a warning 6216instead 6217and continue. Handles the case where the method inadvertently declares 6218too 6219many arguments, but does not actually use the extra ones. Applies mainly 6220to 6221the predefined methods. Lin Ming. Linux BZ 11032. 6222 6223Disallow the evaluation of named object types with no intrinsic value. 6224Return 6225AE_TYPE for objects that have no value and therefore evaluation is 6226undefined: 6227Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 6228of 6229these types were allowed, but an exception would be generated at some 6230point 6231during the evaluation. Now, the error is generated up front. 6232 6233Fixed a possible memory leak in the AcpiNsGetExternalPathname function 6234(nsnames.c). Fixes a leak in the error exit path. 6235 6236Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 6237debug 6238levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 6239ACPI_EXCEPTION 6240interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 6241ACPI_LV_EVENTS. 6242 6243Removed obsolete and/or unused exception codes from the acexcep.h header. 6244There is the possibility that certain device drivers may be affected if 6245they 6246use any of these exceptions. 6247 6248The ACPICA documentation has been added to the public git source tree, 6249under 6250acpica/documents. Included are the ACPICA programmer reference, the iASL 6251compiler reference, and the changes.txt release logfile. 6252 6253Example Code and Data Size: These are the sizes for the OS-independent 6254acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6255debug version of the code includes the debug output trace mechanism and 6256has a 6257much larger code and data size. 6258 6259 Previous Release: 6260 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6261 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6262 Current Release: 6263 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6264 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6265 62662) iASL Compiler/Disassembler and Tools: 6267 6268Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 6269defines _SCP with 3 arguments. Previous versions defined it with only 1 6270argument. iASL now allows both definitions. 6271 6272iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 6273zero- 6274length subtables when disassembling ACPI tables. Also fixed a couple of 6275errors where a full 16-bit table type field was not extracted from the 6276input 6277properly. 6278 6279acpisrc: Improve comment counting mechanism for generating source code 6280statistics. Count first and last lines of multi-line comments as 6281whitespace, 6282not comment lines. Handle Linux legal header in addition to standard 6283acpica 6284header. 6285 6286---------------------------------------- 6287 628829 July 2008. Summary of changes for version 20080729: 6289 62901) ACPI CA Core Subsystem: 6291 6292Fix a possible deadlock in the GPE dispatch. Remove call to 6293AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 6294attempt 6295to acquire the GPE lock but can deadlock since the GPE lock is already 6296held 6297at dispatch time. This code was introduced in version 20060831 as a 6298response 6299to Linux BZ 6881 and has since been removed from Linux. 6300 6301Add a function to dereference returned reference objects. Examines the 6302return 6303object from a call to AcpiEvaluateObject. Any Index or RefOf references 6304are 6305automatically dereferenced in an attempt to return something useful 6306(these 6307reference types cannot be converted into an external ACPI_OBJECT.) 6308Provides 6309MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 6310 6311x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 6312subtables for the MADT and one new subtable for the SRAT. Includes 6313disassembler and AcpiSrc support. Data from the Intel 64 Architecture 6314x2APIC 6315Specification, June 2008. 6316 6317Additional error checking for pathname utilities. Add error check after 6318all 6319calls to AcpiNsGetPathnameLength. Add status return from 6320AcpiNsBuildExternalPath and check after all calls. Add parameter 6321validation 6322to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 6323 6324Return status from the global init function AcpiUtGlobalInitialize. This 6325is 6326used by both the kernel subsystem and the utilities such as iASL 6327compiler. 6328The function could possibly fail when the caches are initialized. Yang 6329Yi. 6330 6331Add a function to decode reference object types to strings. Created for 6332improved error messages. 6333 6334Improve object conversion error messages. Better error messages during 6335object 6336conversion from internal to the external ACPI_OBJECT. Used for external 6337calls 6338to AcpiEvaluateObject. 6339 6340Example Code and Data Size: These are the sizes for the OS-independent 6341acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6342debug version of the code includes the debug output trace mechanism and 6343has a 6344much larger code and data size. 6345 6346 Previous Release: 6347 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6348 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6349 Current Release: 6350 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6351 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6352 63532) iASL Compiler/Disassembler and Tools: 6354 6355Debugger: fix a possible hang when evaluating non-methods. Fixes a 6356problem 6357introduced in version 20080701. If the object being evaluated (via 6358execute 6359command) is not a method, the debugger can hang while trying to obtain 6360non- 6361existent parameters. 6362 6363iASL: relax error for using reserved "_T_x" identifiers. These names can 6364appear in a disassembled ASL file if they were emitted by the original 6365compiler. Instead of issuing an error or warning and forcing the user to 6366manually change these names, issue a remark instead. 6367 6368iASL: error if named object created in while loop. Emit an error if any 6369named 6370object is created within a While loop. If allowed, this code will 6371generate 6372a 6373run-time error on the second iteration of the loop when an attempt is 6374made 6375to 6376create the same named object twice. ACPICA bugzilla 730. 6377 6378iASL: Support absolute pathnames for include files. Add support for 6379absolute 6380pathnames within the Include operator. previously, only relative 6381pathnames 6382were supported. 6383 6384iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 6385Descriptor. 6386The ACPI spec requires one interrupt minimum. BZ 423 6387 6388iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 6389Handles the case for the Interrupt Resource Descriptor where 6390the ResourceSource argument is omitted but ResourceSourceIndex 6391is present. Now leave room for the Index. BZ 426 6392 6393iASL: Prevent error message if CondRefOf target does not exist. Fixes 6394cases 6395where an error message is emitted if the target does not exist. BZ 516 6396 6397iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 6398(get ACPI tables on Windows). This was apparently broken in version 639920070919. 6400 6401AcpiXtract: Handle EOF while extracting data. Correctly handle the case 6402where 6403the EOF happens immediately after the last table in the input file. Print 6404completion message. Previously, no message was displayed in this case. 6405 6406---------------------------------------- 640701 July 2008. Summary of changes for version 20080701: 6408 64090) Git source tree / acpica.org 6410 6411Fixed a problem where a git-clone from http would not transfer the entire 6412source tree. 6413 64141) ACPI CA Core Subsystem: 6415 6416Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 6417enable bit. Now performs a read-change-write of the enable register 6418instead 6419of simply writing out the cached enable mask. This will prevent 6420inadvertent 6421enabling of GPEs if a rogue GPE is received during initialization (before 6422GPE 6423handlers are installed.) 6424 6425Implemented a copy for dynamically loaded tables. Previously, dynamically 6426loaded tables were simply mapped - but on some machines this memory is 6427corrupted after suspend. Now copy the table to a local buffer. For the 6428OpRegion case, added checksum verify. Use the table length from the table 6429header, not the region length. For the Buffer case, use the table length 6430also. Dennis Noordsij, Bob Moore. BZ 10734 6431 6432Fixed a problem where the same ACPI table could not be dynamically loaded 6433and 6434unloaded more than once. Without this change, a table cannot be loaded 6435again 6436once it has been loaded/unloaded one time. The current mechanism does not 6437unregister a table upon an unload. During a load, if the same table is 6438found, 6439this no longer returns an exception. BZ 722 6440 6441Fixed a problem where the wrong descriptor length was calculated for the 6442EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 6443EndTag 6444are calculated as 12 bytes long, but the actual length in the internal 6445descriptor is 16 because of the round-up to 8 on the 64-bit build. 6446Reported 6447by Linn Crosetto. BZ 728 6448 6449Fixed a possible memory leak in the Unload operator. The DdbHandle 6450returned 6451by Load() did not have its reference count decremented during unload, 6452leading 6453to a memory leak. Lin Ming. BZ 727 6454 6455Fixed a possible memory leak when deleting thermal/processor objects. Any 6456associated notify handlers (and objects) were not being deleted. Fiodor 6457Suietov. BZ 506 6458 6459Fixed the ordering of the ASCII names in the global mutex table to match 6460the 6461actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 6462only. 6463Vegard Nossum. BZ 726 6464 6465Enhanced the AcpiGetObjectInfo interface to return the number of required 6466arguments if the object is a control method. Added this call to the 6467debugger 6468so the proper number of default arguments are passed to a method. This 6469prevents a warning when executing methods from AcpiExec. 6470 6471Added a check for an invalid handle in AcpiGetObjectInfo. Return 6472AE_BAD_PARAMETER if input handle is invalid. BZ 474 6473 6474Fixed an extraneous warning from exconfig.c on the 64-bit build. 6475 6476Example Code and Data Size: These are the sizes for the OS-independent 6477acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6478debug version of the code includes the debug output trace mechanism and 6479has a 6480much larger code and data size. 6481 6482 Previous Release: 6483 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6484 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6485 Current Release: 6486 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6487 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6488 64892) iASL Compiler/Disassembler and Tools: 6490 6491iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 6492resource descriptor names. 6493 6494iASL: Detect invalid ASCII characters in input (windows version). Removed 6495the 6496"-CF" flag from the flex compile, enables correct detection of non-ASCII 6497characters in the input. BZ 441 6498 6499iASL: Eliminate warning when result of LoadTable is not used. Eliminate 6500the 6501"result of operation not used" warning when the DDB handle returned from 6502LoadTable is not used. The warning is not needed. BZ 590 6503 6504AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 6505method 6506to 6507pass address of table to the AML. Added option to disable OpRegion 6508simulation 6509to allow creation of an OpRegion with a real address that was passed to 6510_CFG. 6511All of this allows testing of the Load and Unload operators from 6512AcpiExec. 6513 6514Debugger: update tables command for unloaded tables. Handle unloaded 6515tables 6516and use the standard table header output routine. 6517 6518---------------------------------------- 651909 June 2008. Summary of changes for version 20080609: 6520 65211) ACPI CA Core Subsystem: 6522 6523Implemented a workaround for reversed _PRT entries. A significant number 6524of 6525BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 6526change dynamically detects and repairs this problem. Provides 6527compatibility 6528with MS ACPI. BZ 6859 6529 6530Simplified the internal ACPI hardware interfaces to eliminate the locking 6531flag parameter from Register Read/Write. Added a new external interface, 6532AcpiGetRegisterUnlocked. 6533 6534Fixed a problem where the invocation of a GPE control method could hang. 6535This 6536was a regression introduced in 20080514. The new method argument count 6537validation mechanism can enter an infinite loop when a GPE method is 6538dispatched. Problem fixed by removing the obsolete code that passed GPE 6539block 6540information to the notify handler via the control method parameter 6541pointer. 6542 6543Fixed a problem where the _SST execution status was incorrectly returned 6544to 6545the caller of AcpiEnterSleepStatePrep. This was a regression introduced 6546in 654720080514. _SST is optional and a NOT_FOUND exception should never be 6548returned. BZ 716 6549 6550Fixed a problem where a deleted object could be accessed from within the 6551AML 6552parser. This was a regression introduced in version 20080123 as a fix for 6553the 6554Unload operator. Lin Ming. BZ 10669 6555 6556Cleaned up the debug operand dump mechanism. Eliminated unnecessary 6557operands 6558and eliminated the use of a negative index in a loop. Operands are now 6559displayed in the correct order, not backwards. This also fixes a 6560regression 6561introduced in 20080514 on 64-bit systems where the elimination of 6562ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 6563715 6564 6565Fixed a possible memory leak in EvPciConfigRegionSetup where the error 6566exit 6567path did not delete a locally allocated structure. 6568 6569Updated definitions for the DMAR and SRAT tables to synchronize with the 6570current specifications. Includes disassembler support. 6571 6572Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 6573loop termination value was used. Loop terminated on iteration early, 6574missing 6575one mutex. Linn Crosetto 6576 6577Example Code and Data Size: These are the sizes for the OS-independent 6578acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6579debug version of the code includes the debug output trace mechanism and 6580has a 6581much larger code and data size. 6582 6583 Previous Release: 6584 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6585 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6586 Current Release: 6587 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6588 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6589 65902) iASL Compiler/Disassembler and Tools: 6591 6592Disassembler: Implemented support for EisaId() within _CID objects. Now 6593disassemble integer _CID objects back to EisaId invocations, including 6594multiple integers within _CID packages. Includes single-step support for 6595debugger also. 6596 6597Disassembler: Added support for DMAR and SRAT table definition changes. 6598 6599---------------------------------------- 660014 May 2008. Summary of changes for version 20080514: 6601 66021) ACPI CA Core Subsystem: 6603 6604Fixed a problem where GPEs were enabled too early during the ACPICA 6605initialization. This could lead to "handler not installed" errors on some 6606machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 6607This 6608ensures that all operation regions and devices throughout the namespace 6609have 6610been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 6611 6612Implemented a change to the enter sleep code. Moved execution of the _GTS 6613method to just before setting sleep enable bit. The execution was moved 6614from 6615AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 6616immediately before the SLP_EN bit is set, as per the ACPI specification. 6617Luming Yu, BZ 1653. 6618 6619Implemented a fix to disable unknown GPEs (2nd version). Now always 6620disable 6621the GPE, even if ACPICA thinks that that it is already disabled. It is 6622possible that the AML or some other code has enabled the GPE unbeknownst 6623to 6624the ACPICA code. 6625 6626Fixed a problem with the Field operator where zero-length fields would 6627return 6628an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 6629ASL 6630field declarations in Field(), BankField(), and IndexField(). BZ 10606. 6631 6632Implemented a fix for the Load operator, now load the table at the 6633namespace 6634root. This reverts a change introduced in version 20071019. The table is 6635now 6636loaded at the namespace root even though this goes against the ACPI 6637specification. This provides compatibility with other ACPI 6638implementations. 6639The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 6640Ming. 6641 6642Fixed a problem where ACPICA would not Load() tables with unusual 6643signatures. 6644Now ignore ACPI table signature for Load() operator. Only "SSDT" is 6645acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 6646Therefore, signature validation is worthless. Apparently MS ACPI accepts 6647such 6648signatures, ACPICA must be compatible. BZ 10454. 6649 6650Fixed a possible negative array index in AcpiUtValidateException. Added 6651NULL 6652fields to the exception string arrays to eliminate a -1 subtraction on 6653the 6654SubStatus field. 6655 6656Updated the debug tracking macros to reduce overall code and data size. 6657Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 6658instead of pointers to static strings. Jan Beulich and Bob Moore. 6659 6660Implemented argument count checking in control method invocation via 6661AcpiEvaluateObject. Now emit an error if too few arguments, warning if 6662too 6663many. This applies only to extern programmatic control method execution, 6664not 6665method-to-method calls within the AML. Lin Ming. 6666 6667Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 6668no 6669longer needed, especially with the removal of 16-bit support. It was 6670replaced 6671mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 6672bit 6673on 667432/64-bit platforms is required. 6675 6676Added the C const qualifier for appropriate string constants -- mostly 6677MODULE_NAME and printf format strings. Jan Beulich. 6678 6679Example Code and Data Size: These are the sizes for the OS-independent 6680acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6681debug version of the code includes the debug output trace mechanism and 6682has a 6683much larger code and data size. 6684 6685 Previous Release: 6686 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6687 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6688 Current Release: 6689 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6690 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6691 66922) iASL Compiler/Disassembler and Tools: 6693 6694Implemented ACPI table revision ID validation in the disassembler. Zero 6695is 6696always invalid. For DSDTs, the ID controls the interpreter integer width. 66971 6698means 32-bit and this is unusual. 2 or greater is 64-bit. 6699 6700---------------------------------------- 670121 March 2008. Summary of changes for version 20080321: 6702 67031) ACPI CA Core Subsystem: 6704 6705Implemented an additional change to the GPE support in order to suppress 6706spurious or stray GPEs. The AcpiEvDisableGpe function will now 6707permanently 6708disable incoming GPEs that are neither enabled nor disabled -- meaning 6709that 6710the GPE is unknown to the system. This should prevent future interrupt 6711floods 6712from that GPE. BZ 6217 (Zhang Rui) 6713 6714Fixed a problem where NULL package elements were not returned to the 6715AcpiEvaluateObject interface correctly. The element was simply ignored 6716instead of returning a NULL ACPI_OBJECT package element, potentially 6717causing 6718a buffer overflow and/or confusing the caller who expected a fixed number 6719of 6720elements. BZ 10132 (Lin Ming, Bob Moore) 6721 6722Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 6723Dword, 6724Qword), Field, BankField, and IndexField operators when invoked from 6725inside 6726an executing control method. In this case, these operators created 6727namespace 6728nodes that were incorrectly left marked as permanent nodes instead of 6729temporary nodes. This could cause a problem if there is race condition 6730between an exiting control method and a running namespace walk. (Reported 6731by 6732Linn Crosetto) 6733 6734Fixed a problem where the CreateField and CreateXXXField operators would 6735incorrectly allow duplicate names (the name of the field) with no 6736exception 6737generated. 6738 6739Implemented several changes for Notify handling. Added support for new 6740Notify 6741values (ACPI 2.0+) and improved the Notify debug output. Notify on 6742PowerResource objects is no longer allowed, as per the ACPI 6743specification. 6744(Bob Moore, Zhang Rui) 6745 6746All Reference Objects returned via the AcpiEvaluateObject interface are 6747now 6748marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 6749for 6750NULL objects - either NULL package elements or unresolved named 6751references. 6752 6753Fixed a problem where an extraneous debug message was produced for 6754package 6755objects (when debugging enabled). The message "Package List length larger 6756than NumElements count" is now produced in the correct case, and is now 6757an 6758error message rather than a debug message. Added a debug message for the 6759opposite case, where NumElements is larger than the Package List (the 6760package 6761will be padded out with NULL elements as per the ACPI spec.) 6762 6763Implemented several improvements for the output of the ASL "Debug" object 6764to 6765clarify and keep all data for a given object on one output line. 6766 6767Fixed two size calculation issues with the variable-length Start 6768Dependent 6769resource descriptor. 6770 6771Example Code and Data Size: These are the sizes for the OS-independent 6772acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6773debug version of the code includes the debug output trace mechanism and 6774has 6775a much larger code and data size. 6776 6777 Previous Release: 6778 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6779 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6780 Current Release: 6781 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6782 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6783 67842) iASL Compiler/Disassembler and Tools: 6785 6786Fixed a problem with the use of the Switch operator where execution of 6787the 6788containing method by multiple concurrent threads could cause an 6789AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 6790actual Switch opcode, it must be simulated with local named temporary 6791variables and if/else pairs. The solution chosen was to mark any method 6792that 6793uses Switch as Serialized, thus preventing multiple thread entries. BZ 6794469. 6795 6796---------------------------------------- 679713 February 2008. Summary of changes for version 20080213: 6798 67991) ACPI CA Core Subsystem: 6800 6801Implemented another MS compatibility design change for GPE/Notify 6802handling. 6803GPEs are now cleared/enabled asynchronously to allow all pending notifies 6804to 6805complete first. It is expected that the OSL will queue the enable request 6806behind all pending notify requests (may require changes to the local host 6807OSL 6808in AcpiOsExecute). Alexey Starikovskiy. 6809 6810Fixed a problem where buffer and package objects passed as arguments to a 6811control method via the external AcpiEvaluateObject interface could cause 6812an 6813AE_AML_INTERNAL exception depending on the order and type of operators 6814executed by the target control method. 6815 6816Fixed a problem where resource descriptor size optimization could cause a 6817problem when a _CRS resource template is passed to a _SRS method. The 6818_SRS 6819resource template must use the same descriptors (with the same size) as 6820returned from _CRS. This change affects the following resource 6821descriptors: 6822IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 68239487) 6824 6825Fixed a problem where a CopyObject to RegionField, BankField, and 6826IndexField 6827objects did not perform an implicit conversion as it should. These types 6828must 6829retain their initial type permanently as per the ACPI specification. 6830However, 6831a CopyObject to all other object types should not perform an implicit 6832conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 6833 6834Fixed a problem with the AcpiGetDevices interface where the mechanism to 6835match device CIDs did not examine the entire list of available CIDs, but 6836instead aborted on the first non-matching CID. Andrew Patterson. 6837 6838Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 6839was 6840inadvertently changed to return a 16-bit value instead of a 32-bit value, 6841truncating the upper dword of a 64-bit value. This macro is only used to 6842display debug output, so no incorrect calculations were made. Also, 6843reimplemented the macro so that a 64-bit shift is not performed by 6844inefficient compilers. 6845 6846Added missing va_end statements that should correspond with each va_start 6847statement. 6848 6849Example Code and Data Size: These are the sizes for the OS-independent 6850acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6851debug version of the code includes the debug output trace mechanism and 6852has 6853a much larger code and data size. 6854 6855 Previous Release: 6856 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6857 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6858 Current Release: 6859 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6860 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6861 68622) iASL Compiler/Disassembler and Tools: 6863 6864Implemented full disassembler support for the following new ACPI tables: 6865BERT, EINJ, and ERST. Implemented partial disassembler support for the 6866complicated HEST table. These tables support the Windows Hardware Error 6867Architecture (WHEA). 6868 6869---------------------------------------- 687023 January 2008. Summary of changes for version 20080123: 6871 68721) ACPI CA Core Subsystem: 6873 6874Added the 2008 copyright to all module headers and signons. This affects 6875virtually every file in the ACPICA core subsystem, the iASL compiler, and 6876the tools/utilities. 6877 6878Fixed a problem with the SizeOf operator when used with Package and 6879Buffer 6880objects. These objects have deferred execution for some arguments, and 6881the 6882execution is now completed before the SizeOf is executed. This problem 6883caused 6884unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 6885BZ 68869558 6887 6888Implemented an enhancement to the interpreter "slack mode". In the 6889absence 6890of 6891an explicit return or an implicitly returned object from the last 6892executed 6893opcode, a control method will now implicitly return an integer of value 0 6894for 6895Microsoft compatibility. (Lin Ming) BZ 392 6896 6897Fixed a problem with the Load operator where an exception was not 6898returned 6899in 6900the case where the table is already loaded. (Lin Ming) BZ 463 6901 6902Implemented support for the use of DDBHandles as an Indexed Reference, as 6903per 6904the ACPI spec. (Lin Ming) BZ 486 6905 6906Implemented support for UserTerm (Method invocation) for the Unload 6907operator 6908as per the ACPI spec. (Lin Ming) BZ 580 6909 6910Fixed a problem with the LoadTable operator where the OemId and 6911OemTableId 6912input strings could cause unexpected failures if they were shorter than 6913the 6914maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 6915 6916Implemented support for UserTerm (Method invocation) for the Unload 6917operator 6918as per the ACPI spec. (Lin Ming) BZ 580 6919 6920Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 6921HEST, 6922IBFT, UEFI, WDAT. Disassembler support is forthcoming. 6923 6924Example Code and Data Size: These are the sizes for the OS-independent 6925acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6926debug version of the code includes the debug output trace mechanism and 6927has 6928a much larger code and data size. 6929 6930 Previous Release: 6931 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6932 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6933 Current Release: 6934 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6935 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6936 69372) iASL Compiler/Disassembler and Tools: 6938 6939Implemented support in the disassembler for checksum validation on 6940incoming 6941binary DSDTs and SSDTs. If incorrect, a message is displayed within the 6942table 6943header dump at the start of the disassembly. 6944 6945Implemented additional debugging information in the namespace listing 6946file 6947created during compilation. In addition to the namespace hierarchy, the 6948full 6949pathname to each namespace object is displayed. 6950 6951Fixed a problem with the disassembler where invalid ACPI tables could 6952cause 6953faults or infinite loops. 6954 6955Fixed an unexpected parse error when using the optional "parameter types" 6956list in a control method declaration. (Lin Ming) BZ 397 6957 6958Fixed a problem where two External declarations with the same name did 6959not 6960cause an error (Lin Ming) BZ 509 6961 6962Implemented support for full TermArgs (adding Argx, Localx and method 6963invocation) for the ParameterData parameter to the LoadTable operator. 6964(Lin 6965Ming) BZ 583,587 6966 6967---------------------------------------- 696819 December 2007. Summary of changes for version 20071219: 6969 69701) ACPI CA Core Subsystem: 6971 6972Implemented full support for deferred execution for the TermArg string 6973arguments for DataTableRegion. This enables forward references and full 6974operand resolution for the three string arguments. Similar to 6975OperationRegion 6976deferred argument execution.) Lin Ming. BZ 430 6977 6978Implemented full argument resolution support for the BankValue argument 6979to 6980BankField. Previously, only constants were supported, now any TermArg may 6981be 6982used. Lin Ming BZ 387, 393 6983 6984Fixed a problem with AcpiGetDevices where the search of a branch of the 6985device tree could be terminated prematurely. In accordance with the ACPI 6986specification, the search down the current branch is terminated if a 6987device 6988is both not present and not functional (instead of just not present.) 6989Yakui 6990Zhao. 6991 6992Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 6993if 6994the underlying AML code changed the GPE enable registers. Now, any 6995unknown 6996incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 6997disabled 6998instead of simply ignored. Rui Zhang. 6999 7000Fixed a problem with Index Fields where the Index register was 7001incorrectly 7002limited to a maximum of 32 bits. Now any size may be used. 7003 7004Fixed a couple memory leaks associated with "implicit return" objects 7005when 7006the AML Interpreter slack mode is enabled. Lin Ming BZ 349 7007 7008Example Code and Data Size: These are the sizes for the OS-independent 7009acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7010debug version of the code includes the debug output trace mechanism and 7011has 7012a much larger code and data size. 7013 7014 Previous Release: 7015 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7016 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7017 Current Release: 7018 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7019 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7020 7021---------------------------------------- 702214 November 2007. Summary of changes for version 20071114: 7023 70241) ACPI CA Core Subsystem: 7025 7026Implemented event counters for each of the Fixed Events, the ACPI SCI 7027(interrupt) itself, and control methods executed. Named 7028AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 7029These 7030should be useful for debugging and statistics. 7031 7032Implemented a new external interface, AcpiGetStatistics, to retrieve the 7033contents of the various event counters. Returns the current values for 7034AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 7035AcpiMethodCount. The interface can be expanded in the future if new 7036counters 7037are added. Device drivers should use this interface rather than access 7038the 7039counters directly. 7040 7041Fixed a problem with the FromBCD and ToBCD operators. With some 7042compilers, 7043the ShortDivide function worked incorrectly, causing problems with the 7044BCD 7045functions with large input values. A truncation from 64-bit to 32-bit 7046inadvertently occurred. Internal BZ 435. Lin Ming 7047 7048Fixed a problem with Index references passed as method arguments. 7049References 7050passed as arguments to control methods were dereferenced immediately 7051(before 7052control was passed to the called method). The references are now 7053correctly 7054passed directly to the called method. BZ 5389. Lin Ming 7055 7056Fixed a problem with CopyObject used in conjunction with the Index 7057operator. 7058The reference was incorrectly dereferenced before the copy. The reference 7059is 7060now correctly copied. BZ 5391. Lin Ming 7061 7062Fixed a problem with Control Method references within Package objects. 7063These 7064references are now correctly generated. This completes the package 7065construction overhaul that began in version 20071019. 7066 7067Example Code and Data Size: These are the sizes for the OS-independent 7068acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7069debug version of the code includes the debug output trace mechanism and 7070has 7071a much larger code and data size. 7072 7073 Previous Release: 7074 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7075 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7076 Current Release: 7077 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7078 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7079 7080 70812) iASL Compiler/Disassembler and Tools: 7082 7083The AcpiExec utility now installs handlers for all of the predefined 7084Operation Region types. New types supported are: PCI_Config, CMOS, and 7085PCIBARTarget. 7086 7087Fixed a problem with the 64-bit version of AcpiExec where the extended 7088(64- 7089bit) address fields for the DSDT and FACS within the FADT were not being 7090used, causing truncation of the upper 32-bits of these addresses. Lin 7091Ming 7092and Bob Moore 7093 7094---------------------------------------- 709519 October 2007. Summary of changes for version 20071019: 7096 70971) ACPI CA Core Subsystem: 7098 7099Fixed a problem with the Alias operator when the target of the alias is a 7100named ASL operator that opens a new scope -- Scope, Device, 7101PowerResource, 7102Processor, and ThermalZone. In these cases, any children of the original 7103operator could not be accessed via the alias, potentially causing 7104unexpected 7105AE_NOT_FOUND exceptions. (BZ 9067) 7106 7107Fixed a problem with the Package operator where all named references were 7108created as object references and left otherwise unresolved. According to 7109the 7110ACPI specification, a Package can only contain Data Objects or references 7111to 7112control methods. The implication is that named references to Data Objects 7113(Integer, Buffer, String, Package, BufferField, Field) should be resolved 7114immediately upon package creation. This is the approach taken with this 7115change. References to all other named objects (Methods, Devices, Scopes, 7116etc.) are all now properly created as reference objects. (BZ 5328) 7117 7118Reverted a change to Notify handling that was introduced in version 711920070508. This version changed the Notify handling from asynchronous to 7120fully synchronous (Device driver Notify handling with respect to the 7121Notify 7122ASL operator). It was found that this change caused more problems than it 7123solved and was removed by most users. 7124 7125Fixed a problem with the Increment and Decrement operators where the type 7126of 7127the target object could be unexpectedly and incorrectly changed. (BZ 353) 7128Lin Ming. 7129 7130Fixed a problem with the Load and LoadTable operators where the table 7131location within the namespace was ignored. Instead, the table was always 7132loaded into the root or current scope. Lin Ming. 7133 7134Fixed a problem with the Load operator when loading a table from a buffer 7135object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 7136 7137Fixed a problem with the Debug object where a store of a DdbHandle 7138reference 7139object to the Debug object could cause a fault. 7140 7141Added a table checksum verification for the Load operator, in the case 7142where 7143the load is from a buffer. (BZ 578). 7144 7145Implemented additional parameter validation for the LoadTable operator. 7146The 7147length of the input strings SignatureString, OemIdString, and OemTableId 7148are 7149now checked for maximum lengths. (BZ 582) Lin Ming. 7150 7151Example Code and Data Size: These are the sizes for the OS-independent 7152acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7153debug version of the code includes the debug output trace mechanism and 7154has 7155a much larger code and data size. 7156 7157 Previous Release: 7158 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7159 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7160 Current Release: 7161 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7162 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7163 7164 71652) iASL Compiler/Disassembler: 7166 7167Fixed a problem where if a single file was specified and the file did not 7168exist, no error message was emitted. (Introduced with wildcard support in 7169version 20070917.) 7170 7171---------------------------------------- 717219 September 2007. Summary of changes for version 20070919: 7173 71741) ACPI CA Core Subsystem: 7175 7176Designed and implemented new external interfaces to install and remove 7177handlers for ACPI table-related events. Current events that are defined 7178are 7179LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 7180they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 7181AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 7182 7183Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 7184(acpi_serialized option on Linux) could cause some systems to hang during 7185initialization. (Bob Moore) BZ 8171 7186 7187Fixed a problem where objects of certain types (Device, ThermalZone, 7188Processor, PowerResource) can be not found if they are declared and 7189referenced from within the same control method (Lin Ming) BZ 341 7190 7191Example Code and Data Size: These are the sizes for the OS-independent 7192acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7193debug version of the code includes the debug output trace mechanism and 7194has 7195a much larger code and data size. 7196 7197 Previous Release: 7198 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7199 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7200 Current Release: 7201 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7202 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7203 7204 72052) iASL Compiler/Disassembler: 7206 7207Implemented support to allow multiple files to be compiled/disassembled 7208in 7209a 7210single invocation. This includes command line wildcard support for both 7211the 7212Windows and Unix versions of the compiler. This feature simplifies the 7213disassembly and compilation of multiple ACPI tables in a single 7214directory. 7215 7216---------------------------------------- 721708 May 2007. Summary of changes for version 20070508: 7218 72191) ACPI CA Core Subsystem: 7220 7221Implemented a Microsoft compatibility design change for the handling of 7222the 7223Notify AML operator. Previously, notify handlers were dispatched and 7224executed completely asynchronously in a deferred thread. The new design 7225still executes the notify handlers in a different thread, but the 7226original 7227thread that executed the Notify() now waits at a synchronization point 7228for 7229the notify handler to complete. Some machines depend on a synchronous 7230Notify 7231operator in order to operate correctly. 7232 7233Implemented support to allow Package objects to be passed as method 7234arguments to the external AcpiEvaluateObject interface. Previously, this 7235would return the AE_NOT_IMPLEMENTED exception. This feature had not been 7236implemented since there were no reserved control methods that required it 7237until recently. 7238 7239Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 7240that 7241contained invalid non-zero values in reserved fields could cause later 7242failures because these fields have meaning in later revisions of the 7243FADT. 7244For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 7245fields 7246are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 7247 7248Fixed a problem where the Global Lock handle was not properly updated if 7249a 7250thread that acquired the Global Lock via executing AML code then 7251attempted 7252to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 7253Joe 7254Liu. 7255 7256Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 7257could be corrupted if the interrupt being removed was at the head of the 7258list. Reported by Linn Crosetto. 7259 7260Example Code and Data Size: These are the sizes for the OS-independent 7261acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7262debug version of the code includes the debug output trace mechanism and 7263has 7264a much larger code and data size. 7265 7266 Previous Release: 7267 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7268 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7269 Current Release: 7270 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7271 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7272 7273---------------------------------------- 727420 March 2007. Summary of changes for version 20070320: 7275 72761) ACPI CA Core Subsystem: 7277 7278Implemented a change to the order of interpretation and evaluation of AML 7279operand objects within the AML interpreter. The interpreter now evaluates 7280operands in the order that they appear in the AML stream (and the 7281corresponding ASL code), instead of in the reverse order (after the 7282entire 7283operand list has been parsed). The previous behavior caused several 7284subtle 7285incompatibilities with the Microsoft AML interpreter as well as being 7286somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 7287 7288Implemented a change to the ACPI Global Lock support. All interfaces to 7289the 7290global lock now allow the same thread to acquire the lock multiple times. 7291This affects the AcpiAcquireGlobalLock external interface to the global 7292lock 7293as well as the internal use of the global lock to support AML fields -- a 7294control method that is holding the global lock can now simultaneously 7295access 7296AML fields that require global lock protection. Previously, in both 7297cases, 7298this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 7299to 7300AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 7301Controller. There is no change to the behavior of the AML Acquire 7302operator, 7303as this can already be used to acquire a mutex multiple times by the same 7304thread. BZ 8066. With assistance from Alexey Starikovskiy. 7305 7306Fixed a problem where invalid objects could be referenced in the AML 7307Interpreter after error conditions. During operand evaluation, ensure 7308that 7309the internal "Return Object" field is cleared on error and only valid 7310pointers are stored there. Caused occasional access to deleted objects 7311that 7312resulted in "large reference count" warning messages. Valery Podrezov. 7313 7314Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 7315on 7316deeply nested control method invocations. BZ 7873, local BZ 487. Valery 7317Podrezov. 7318 7319Fixed an internal problem with the handling of result objects on the 7320interpreter result stack. BZ 7872. Valery Podrezov. 7321 7322Removed obsolete code that handled the case where AML_NAME_OP is the 7323target 7324of a reference (Reference.Opcode). This code was no longer necessary. BZ 73257874. Valery Podrezov. 7326 7327Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 7328was 7329a 7330remnant from the previously discontinued 16-bit support. 7331 7332Example Code and Data Size: These are the sizes for the OS-independent 7333acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7334debug version of the code includes the debug output trace mechanism and 7335has 7336a much larger code and data size. 7337 7338 Previous Release: 7339 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7340 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7341 Current Release: 7342 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7343 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7344 7345---------------------------------------- 734626 January 2007. Summary of changes for version 20070126: 7347 73481) ACPI CA Core Subsystem: 7349 7350Added the 2007 copyright to all module headers and signons. This affects 7351virtually every file in the ACPICA core subsystem, the iASL compiler, and 7352the utilities. 7353 7354Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 7355during a table load. A bad pointer was passed in the case where the DSDT 7356is 7357overridden, causing a fault in this case. 7358 7359Example Code and Data Size: These are the sizes for the OS-independent 7360acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7361debug version of the code includes the debug output trace mechanism and 7362has 7363a much larger code and data size. 7364 7365 Previous Release: 7366 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7367 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7368 Current Release: 7369 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7370 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7371 7372---------------------------------------- 737315 December 2006. Summary of changes for version 20061215: 7374 73751) ACPI CA Core Subsystem: 7376 7377Support for 16-bit ACPICA has been completely removed since it is no 7378longer 7379necessary and it clutters the code. All 16-bit macros, types, and 7380conditional compiles have been removed, cleaning up and simplifying the 7381code 7382across the entire subsystem. DOS support is no longer needed since the 7383bootable Linux firmware kit is now available. 7384 7385The handler for the Global Lock is now removed during AcpiTerminate to 7386enable a clean subsystem restart, via the implementation of the 7387AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 7388HP) 7389 7390Implemented enhancements to the multithreading support within the 7391debugger 7392to enable improved multithreading debugging and evaluation of the 7393subsystem. 7394(Valery Podrezov) 7395 7396Debugger: Enhanced the Statistics/Memory command to emit the total 7397(maximum) 7398memory used during the execution, as well as the maximum memory consumed 7399by 7400each of the various object types. (Valery Podrezov) 7401 7402Example Code and Data Size: These are the sizes for the OS-independent 7403acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7404debug version of the code includes the debug output trace mechanism and 7405has 7406a much larger code and data size. 7407 7408 Previous Release: 7409 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7410 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7411 Current Release: 7412 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7413 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7414 7415 74162) iASL Compiler/Disassembler and Tools: 7417 7418AcpiExec: Implemented a new option (-m) to display full memory use 7419statistics upon subsystem/program termination. (Valery Podrezov) 7420 7421---------------------------------------- 742209 November 2006. Summary of changes for version 20061109: 7423 74241) ACPI CA Core Subsystem: 7425 7426Optimized the Load ASL operator in the case where the source operand is 7427an 7428operation region. Simply map the operation region memory, instead of 7429performing a bytewise read. (Region must be of type SystemMemory, see 7430below.) 7431 7432Fixed the Load ASL operator for the case where the source operand is a 7433region field. A buffer object is also allowed as the source operand. BZ 7434480 7435 7436Fixed a problem where the Load ASL operator allowed the source operand to 7437be 7438an operation region of any type. It is now restricted to regions of type 7439SystemMemory, as per the ACPI specification. BZ 481 7440 7441Additional cleanup and optimizations for the new Table Manager code. 7442 7443AcpiEnable will now fail if all of the required ACPI tables are not 7444loaded 7445(FADT, FACS, DSDT). BZ 477 7446 7447Added #pragma pack(8/4) to acobject.h to ensure that the structures in 7448this 7449header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 7450manually optimized to be aligned and will not work if it is byte-packed. 7451 7452Example Code and Data Size: These are the sizes for the OS-independent 7453acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7454debug version of the code includes the debug output trace mechanism and 7455has 7456a much larger code and data size. 7457 7458 Previous Release: 7459 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7460 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7461 Current Release: 7462 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7463 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7464 7465 74662) iASL Compiler/Disassembler and Tools: 7467 7468Fixed a problem where the presence of the _OSI predefined control method 7469within complex expressions could cause an internal compiler error. 7470 7471AcpiExec: Implemented full region support for multiple address spaces. 7472SpaceId is now part of the REGION object. BZ 429 7473 7474---------------------------------------- 747511 October 2006. Summary of changes for version 20061011: 7476 74771) ACPI CA Core Subsystem: 7478 7479Completed an AML interpreter performance enhancement for control method 7480execution. Previously a 2-pass parse/execution, control methods are now 7481completely parsed and executed in a single pass. This improves overall 7482interpreter performance by ~25%, reduces code size, and reduces CPU stack 7483use. (Valery Podrezov + interpreter changes in version 20051202 that 7484eliminated namespace loading during the pass one parse.) 7485 7486Implemented _CID support for PCI Root Bridge detection. If the _HID does 7487not 7488match the predefined PCI Root Bridge IDs, the _CID list (if present) is 7489now 7490obtained and also checked for an ID match. 7491 7492Implemented additional support for the PCI _ADR execution: upsearch until 7493a 7494device scope is found before executing _ADR. This allows PCI_Config 7495operation regions to be declared locally within control methods 7496underneath 7497PCI device objects. 7498 7499Fixed a problem with a possible race condition between threads executing 7500AcpiWalkNamespace and the AML interpreter. This condition was removed by 7501modifying AcpiWalkNamespace to (by default) ignore all temporary 7502namespace 7503entries created during any concurrent control method execution. An 7504additional namespace race condition is known to exist between 7505AcpiWalkNamespace and the Load/Unload ASL operators and is still under 7506investigation. 7507 7508Restructured the AML ParseLoop function, breaking it into several 7509subfunctions in order to reduce CPU stack use and improve 7510maintainability. 7511(Mikhail Kouzmich) 7512 7513AcpiGetHandle: Fix for parameter validation to detect invalid 7514combinations 7515of prefix handle and pathname. BZ 478 7516 7517Example Code and Data Size: These are the sizes for the OS-independent 7518acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7519debug version of the code includes the debug output trace mechanism and 7520has 7521a much larger code and data size. 7522 7523 Previous Release: 7524 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7525 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7526 Current Release: 7527 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7528 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7529 75302) iASL Compiler/Disassembler and Tools: 7531 7532Ported the -g option (get local ACPI tables) to the new ACPICA Table 7533Manager 7534to restore original behavior. 7535 7536---------------------------------------- 753727 September 2006. Summary of changes for version 20060927: 7538 75391) ACPI CA Core Subsystem: 7540 7541Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 7542These functions now use a spinlock for mutual exclusion and the interrupt 7543level indication flag is not needed. 7544 7545Fixed a problem with the Global Lock where the lock could appear to be 7546obtained before it is actually obtained. The global lock semaphore was 7547inadvertently created with one unit instead of zero units. (BZ 464) 7548Fiodor 7549Suietov. 7550 7551Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 7552during 7553a read from a buffer or region field. (BZ 458) Fiodor Suietov. 7554 7555Example Code and Data Size: These are the sizes for the OS-independent 7556acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7557debug version of the code includes the debug output trace mechanism and 7558has 7559a much larger code and data size. 7560 7561 Previous Release: 7562 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7563 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7564 Current Release: 7565 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7566 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7567 7568 75692) iASL Compiler/Disassembler and Tools: 7570 7571Fixed a compilation problem with the pre-defined Resource Descriptor 7572field 7573names where an "object does not exist" error could be incorrectly 7574generated 7575if the parent ResourceTemplate pathname places the template within a 7576different namespace scope than the current scope. (BZ 7212) 7577 7578Fixed a problem where the compiler could hang after syntax errors 7579detected 7580in an ElseIf construct. (BZ 453) 7581 7582Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 7583operator. An incorrect output filename was produced when this parameter 7584was 7585a null string (""). Now, the original input filename is used as the AML 7586output filename, with an ".aml" extension. 7587 7588Implemented a generic batch command mode for the AcpiExec utility 7589(execute 7590any AML debugger command) (Valery Podrezov). 7591 7592---------------------------------------- 759312 September 2006. Summary of changes for version 20060912: 7594 75951) ACPI CA Core Subsystem: 7596 7597Enhanced the implementation of the "serialized mode" of the interpreter 7598(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 7599specified, instead of creating a serialization semaphore per control 7600method, 7601the interpreter lock is simply no longer released before a blocking 7602operation during control method execution. This effectively makes the AML 7603Interpreter single-threaded. The overhead of a semaphore per-method is 7604eliminated. 7605 7606Fixed a regression where an error was no longer emitted if a control 7607method 7608attempts to create 2 objects of the same name. This once again returns 7609AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 7610that 7611will dynamically serialize the control method to possible prevent future 7612errors. (BZ 440) 7613 7614Integrated a fix for a problem with PCI Express HID detection in the PCI 7615Config Space setup procedure. (BZ 7145) 7616 7617Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 7618AcpiHwInitialize function - the FADT registers are now validated when the 7619table is loaded. 7620 7621Added two new warnings during FADT verification - 1) if the FADT is 7622larger 7623than the largest known FADT version, and 2) if there is a mismatch 7624between 7625a 762632-bit block address and the 64-bit X counterpart (when both are non- 7627zero.) 7628 7629Example Code and Data Size: These are the sizes for the OS-independent 7630acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7631debug version of the code includes the debug output trace mechanism and 7632has 7633a much larger code and data size. 7634 7635 Previous Release: 7636 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7637 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7638 Current Release: 7639 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7640 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7641 7642 76432) iASL Compiler/Disassembler and Tools: 7644 7645Fixed a problem with the implementation of the Switch() operator where 7646the 7647temporary variable was declared too close to the actual Switch, instead 7648of 7649at method level. This could cause a problem if the Switch() operator is 7650within a while loop, causing an error on the second iteration. (BZ 460) 7651 7652Disassembler - fix for error emitted for unknown type for target of scope 7653operator. Now, ignore it and continue. 7654 7655Disassembly of an FADT now verifies the input FADT and reports any errors 7656found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 7657 7658Disassembly of raw data buffers with byte initialization data now 7659prefixes 7660each output line with the current buffer offset. 7661 7662Disassembly of ASF! table now includes all variable-length data fields at 7663the end of some of the subtables. 7664 7665The disassembler now emits a comment if a buffer appears to be a 7666ResourceTemplate, but cannot be disassembled as such because the EndTag 7667does 7668not appear at the very end of the buffer. 7669 7670AcpiExec - Added the "-t" command line option to enable the serialized 7671mode 7672of the AML interpreter. 7673 7674---------------------------------------- 767531 August 2006. Summary of changes for version 20060831: 7676 76771) ACPI CA Core Subsystem: 7678 7679Miscellaneous fixes for the Table Manager: 7680- Correctly initialize internal common FADT for all 64-bit "X" fields 7681- Fixed a couple table mapping issues during table load 7682- Fixed a couple alignment issues for IA64 7683- Initialize input array to zero in AcpiInitializeTables 7684- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 7685AcpiGetTableByIndex 7686 7687Change for GPE support: when a "wake" GPE is received, all wake GPEs are 7688now 7689immediately disabled to prevent the waking GPE from firing again and to 7690prevent other wake GPEs from interrupting the wake process. 7691 7692Added the AcpiGpeCount global that tracks the number of processed GPEs, 7693to 7694be used for debugging systems with a large number of ACPI interrupts. 7695 7696Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 7697both the ACPICA headers and the disassembler. 7698 7699Example Code and Data Size: These are the sizes for the OS-independent 7700acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7701debug version of the code includes the debug output trace mechanism and 7702has 7703a much larger code and data size. 7704 7705 Previous Release: 7706 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7707 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7708 Current Release: 7709 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7710 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7711 7712 77132) iASL Compiler/Disassembler and Tools: 7714 7715Disassembler support for the DMAR ACPI table. 7716 7717---------------------------------------- 771823 August 2006. Summary of changes for version 20060823: 7719 77201) ACPI CA Core Subsystem: 7721 7722The Table Manager component has been completely redesigned and 7723reimplemented. The new design is much simpler, and reduces the overall 7724code 7725and data size of the kernel-resident ACPICA by approximately 5%. Also, it 7726is 7727now possible to obtain the ACPI tables very early during kernel 7728initialization, even before dynamic memory management is initialized. 7729(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 7730 7731Obsolete ACPICA interfaces: 7732 7733- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 7734init 7735time). 7736- AcpiLoadTable: Not needed. 7737- AcpiUnloadTable: Not needed. 7738 7739New ACPICA interfaces: 7740 7741- AcpiInitializeTables: Must be called before the table manager can be 7742used. 7743- AcpiReallocateRootTable: Used to transfer the root table to dynamically 7744allocated memory after it becomes available. 7745- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 7746tables 7747in the RSDT/XSDT. 7748 7749Other ACPICA changes: 7750 7751- AcpiGetTableHeader returns the actual mapped table header, not a copy. 7752Use 7753AcpiOsUnmapMemory to free this mapping. 7754- AcpiGetTable returns the actual mapped table. The mapping is managed 7755internally and must not be deleted by the caller. Use of this interface 7756causes no additional dynamic memory allocation. 7757- AcpiFindRootPointer: Support for physical addressing has been 7758eliminated, 7759it appeared to be unused. 7760- The interface to AcpiOsMapMemory has changed to be consistent with the 7761other allocation interfaces. 7762- The interface to AcpiOsGetRootPointer has changed to eliminate 7763unnecessary 7764parameters. 7765- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 776664- 7767bit platforms. Was previously 64 bits on all platforms. 7768- The interface to the ACPI Global Lock acquire/release macros have 7769changed 7770slightly since ACPICA no longer keeps a local copy of the FACS with a 7771constructed pointer to the actual global lock. 7772 7773Porting to the new table manager: 7774 7775- AcpiInitializeTables: Must be called once, and can be called anytime 7776during the OS initialization process. It allows the host to specify an 7777area 7778of memory to be used to store the internal version of the RSDT/XSDT (root 7779table). This allows the host to access ACPI tables before memory 7780management 7781is initialized and running. 7782- AcpiReallocateRootTable: Can be called after memory management is 7783running 7784to copy the root table to a dynamically allocated array, freeing up the 7785scratch memory specified in the call to AcpiInitializeTables. 7786- AcpiSubsystemInitialize: This existing interface is independent of the 7787Table Manager, and does not have to be called before the Table Manager 7788can 7789be used, it only must be called before the rest of ACPICA can be used. 7790- ACPI Tables: Some changes have been made to the names and structure of 7791the 7792actbl.h and actbl1.h header files and may require changes to existing 7793code. 7794For example, bitfields have been completely removed because of their lack 7795of 7796portability across C compilers. 7797- Update interfaces to the Global Lock acquire/release macros if local 7798versions are used. (see acwin.h) 7799 7800Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 7801 7802New files: tbfind.c 7803 7804Example Code and Data Size: These are the sizes for the OS-independent 7805acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7806debug version of the code includes the debug output trace mechanism and 7807has 7808a much larger code and data size. 7809 7810 Previous Release: 7811 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7812 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7813 Current Release: 7814 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7815 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7816 7817 78182) iASL Compiler/Disassembler and Tools: 7819 7820No changes for this release. 7821 7822---------------------------------------- 782321 July 2006. Summary of changes for version 20060721: 7824 78251) ACPI CA Core Subsystem: 7826 7827The full source code for the ASL test suite used to validate the iASL 7828compiler and the ACPICA core subsystem is being released with the ACPICA 7829source for the first time. The source is contained in a separate package 7830and 7831consists of over 1100 files that exercise all ASL/AML operators. The 7832package 7833should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 7834Fiodor 7835Suietov) 7836 7837Completed a new design and implementation for support of the ACPI Global 7838Lock. On the OS side, the global lock is now treated as a standard AML 7839mutex. Previously, multiple OS threads could "acquire" the global lock 7840simultaneously. However, this could cause the BIOS to be starved out of 7841the 7842lock - especially in cases such as the Embedded Controller driver where 7843there is a tight coupling between the OS and the BIOS. 7844 7845Implemented an optimization for the ACPI Global Lock interrupt mechanism. 7846The Global Lock interrupt handler no longer queues the execution of a 7847separate thread to signal the global lock semaphore. Instead, the 7848semaphore 7849is signaled directly from the interrupt handler. 7850 7851Implemented support within the AML interpreter for package objects that 7852contain a larger AML length (package list length) than the package 7853element 7854count. In this case, the length of the package is truncated to match the 7855package element count. Some BIOS code apparently modifies the package 7856length 7857on the fly, and this change supports this behavior. Provides 7858compatibility 7859with the MS AML interpreter. (With assistance from Fiodor Suietov) 7860 7861Implemented a temporary fix for the BankValue parameter of a Bank Field 7862to 7863support all constant values, now including the Zero and One opcodes. 7864Evaluation of this parameter must eventually be converted to a full 7865TermArg 7866evaluation. A not-implemented error is now returned (temporarily) for 7867non- 7868constant values for this parameter. 7869 7870Fixed problem reports (Fiodor Suietov) integrated: 7871- Fix for premature object deletion after CopyObject on Operation Region 7872(BZ 7873350) 7874 7875Example Code and Data Size: These are the sizes for the OS-independent 7876acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7877debug version of the code includes the debug output trace mechanism and 7878has 7879a much larger code and data size. 7880 7881 Previous Release: 7882 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 7883 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 7884 Current Release: 7885 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7886 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7887 7888 78892) iASL Compiler/Disassembler and Tools: 7890 7891No changes for this release. 7892 7893---------------------------------------- 789407 July 2006. Summary of changes for version 20060707: 7895 78961) ACPI CA Core Subsystem: 7897 7898Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 7899that do not allow the initialization of address pointers within packed 7900structures - even though the hardware itself may support misaligned 7901transfers. Some of the debug data structures are packed by default to 7902minimize size. 7903 7904Added an error message for the case where AcpiOsGetThreadId() returns 7905zero. 7906A non-zero value is required by the core ACPICA code to ensure the proper 7907operation of AML mutexes and recursive control methods. 7908 7909The DSDT is now the only ACPI table that determines whether the AML 7910interpreter is in 32-bit or 64-bit mode. Not really a functional change, 7911but 7912the hooks for per-table 32/64 switching have been removed from the code. 7913A 7914clarification to the ACPI specification is forthcoming in ACPI 3.0B. 7915 7916Fixed a possible leak of an OwnerID in the error path of 7917AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 7918deletion to a single place in AcpiTbUninstallTable to correct possible 7919leaks 7920when using the AcpiTbDeleteTablesByType interface (with assistance from 7921Lance Ortiz.) 7922 7923Fixed a problem with Serialized control methods where the semaphore 7924associated with the method could be over-signaled after multiple method 7925invocations. 7926 7927Fixed two issues with the locking of the internal namespace data 7928structure. 7929Both the Unload() operator and AcpiUnloadTable interface now lock the 7930namespace during the namespace deletion associated with the table unload 7931(with assistance from Linn Crosetto.) 7932 7933Fixed problem reports (Valery Podrezov) integrated: 7934- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 7935 7936Fixed problem reports (Fiodor Suietov) integrated: 7937- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 7938- On Address Space handler deletion, needless deactivation call (BZ 374) 7939- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 7940375) 7941- Possible memory leak, Notify sub-objects of Processor, Power, 7942ThermalZone 7943(BZ 376) 7944- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 7945- Minimum Length of RSDT should be validated (BZ 379) 7946- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 7947Handler (BZ (380) 7948- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 7949loaded 7950(BZ 381) 7951 7952Example Code and Data Size: These are the sizes for the OS-independent 7953acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7954debug version of the code includes the debug output trace mechanism and 7955has 7956a much larger code and data size. 7957 7958 Previous Release: 7959 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7960 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7961 Current Release: 7962 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7963 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7964 7965 79662) iASL Compiler/Disassembler and Tools: 7967 7968Fixed problem reports: 7969Compiler segfault when ASL contains a long (>1024) String declaration (BZ 7970436) 7971 7972---------------------------------------- 797323 June 2006. Summary of changes for version 20060623: 7974 79751) ACPI CA Core Subsystem: 7976 7977Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 7978allows the type to be customized to the host OS for improved efficiency 7979(since a spinlock is usually a very small object.) 7980 7981Implemented support for "ignored" bits in the ACPI registers. According 7982to 7983the ACPI specification, these bits should be preserved when writing the 7984registers via a read/modify/write cycle. There are 3 bits preserved in 7985this 7986manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 7987 7988Implemented the initial deployment of new OSL mutex interfaces. Since 7989some 7990host operating systems have separate mutex and semaphore objects, this 7991feature was requested. The base code now uses mutexes (and the new mutex 7992interfaces) wherever a binary semaphore was used previously. However, for 7993the current release, the mutex interfaces are defined as macros to map 7994them 7995to the existing semaphore interfaces. Therefore, no OSL changes are 7996required 7997at this time. (See acpiosxf.h) 7998 7999Fixed several problems with the support for the control method SyncLevel 8000parameter. The SyncLevel now works according to the ACPI specification 8001and 8002in concert with the Mutex SyncLevel parameter, since the current 8003SyncLevel 8004is a property of the executing thread. Mutual exclusion for control 8005methods 8006is now implemented with a mutex instead of a semaphore. 8007 8008Fixed three instances of the use of the C shift operator in the bitfield 8009support code (exfldio.c) to avoid the use of a shift value larger than 8010the 8011target data width. The behavior of C compilers is undefined in this case 8012and 8013can cause unpredictable results, and therefore the case must be detected 8014and 8015avoided. (Fiodor Suietov) 8016 8017Added an info message whenever an SSDT or OEM table is loaded dynamically 8018via the Load() or LoadTable() ASL operators. This should improve 8019debugging 8020capability since it will show exactly what tables have been loaded 8021(beyond 8022the tables present in the RSDT/XSDT.) 8023 8024Example Code and Data Size: These are the sizes for the OS-independent 8025acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8026debug version of the code includes the debug output trace mechanism and 8027has 8028a much larger code and data size. 8029 8030 Previous Release: 8031 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8032 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8033 Current Release: 8034 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8035 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8036 8037 80382) iASL Compiler/Disassembler and Tools: 8039 8040No changes for this release. 8041 8042---------------------------------------- 804308 June 2006. Summary of changes for version 20060608: 8044 80451) ACPI CA Core Subsystem: 8046 8047Converted the locking mutex used for the ACPI hardware to a spinlock. 8048This 8049change should eliminate all problems caused by attempting to acquire a 8050semaphore at interrupt level, and it means that all ACPICA external 8051interfaces that directly access the ACPI hardware can be safely called 8052from 8053interrupt level. OSL code that implements the semaphore interfaces should 8054be 8055able to eliminate any workarounds for being called at interrupt level. 8056 8057Fixed a regression introduced in 20060526 where the ACPI device 8058initialization could be prematurely aborted with an AE_NOT_FOUND if a 8059device 8060did not have an optional _INI method. 8061 8062Fixed an IndexField issue where a write to the Data Register should be 8063limited in size to the AccessSize (width) of the IndexField itself. (BZ 8064433, 8065Fiodor Suietov) 8066 8067Fixed problem reports (Valery Podrezov) integrated: 8068- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 8069 8070Fixed problem reports (Fiodor Suietov) integrated: 8071- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 8072 8073Removed four global mutexes that were obsolete and were no longer being 8074used. 8075 8076Example Code and Data Size: These are the sizes for the OS-independent 8077acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8078debug version of the code includes the debug output trace mechanism and 8079has 8080a much larger code and data size. 8081 8082 Previous Release: 8083 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8084 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8085 Current Release: 8086 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8087 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8088 8089 80902) iASL Compiler/Disassembler and Tools: 8091 8092Fixed a fault when using -g option (get tables from registry) on Windows 8093machines. 8094 8095Fixed problem reports integrated: 8096- Generate error if CreateField NumBits parameter is zero. (BZ 405) 8097- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 8098Suietov) 8099- Global table revision override (-r) is ignored (BZ 413) 8100 8101---------------------------------------- 810226 May 2006. Summary of changes for version 20060526: 8103 81041) ACPI CA Core Subsystem: 8105 8106Restructured, flattened, and simplified the internal interfaces for 8107namespace object evaluation - resulting in smaller code, less CPU stack 8108use, 8109and fewer interfaces. (With assistance from Mikhail Kouzmich) 8110 8111Fixed a problem with the CopyObject operator where the first parameter 8112was 8113not typed correctly for the parser, interpreter, compiler, and 8114disassembler. 8115Caused various errors and unexpected behavior. 8116 8117Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 8118produced incorrect results with some C compilers. Since the behavior of C 8119compilers when the shift value is larger than the datatype width is 8120apparently not well defined, the interpreter now detects this condition 8121and 8122simply returns zero as expected in all such cases. (BZ 395) 8123 8124Fixed problem reports (Valery Podrezov) integrated: 8125- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 8126- Allow interpreter to handle nested method declarations (BZ 5361) 8127 8128Fixed problem reports (Fiodor Suietov) integrated: 8129- AcpiTerminate doesn't free debug memory allocation list objects (BZ 8130355) 8131- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 8132356) 8133- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 8134- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 8135- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 8136- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 8137- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 8138- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 8139- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 8140365) 8141- Status of the Global Initialization Handler call not used (BZ 366) 8142- Incorrect object parameter to Global Initialization Handler (BZ 367) 8143 8144Example Code and Data Size: These are the sizes for the OS-independent 8145acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8146debug version of the code includes the debug output trace mechanism and 8147has 8148a much larger code and data size. 8149 8150 Previous Release: 8151 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8152 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8153 Current Release: 8154 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8155 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8156 8157 81582) iASL Compiler/Disassembler and Tools: 8159 8160Modified the parser to allow the names IO, DMA, and IRQ to be used as 8161namespace identifiers with no collision with existing resource descriptor 8162macro names. This provides compatibility with other ASL compilers and is 8163most useful for disassembly/recompilation of existing tables without 8164parse 8165errors. (With assistance from Thomas Renninger) 8166 8167Disassembler: fixed an incorrect disassembly problem with the 8168DataTableRegion and CopyObject operators. Fixed a possible fault during 8169disassembly of some Alias operators. 8170 8171---------------------------------------- 817212 May 2006. Summary of changes for version 20060512: 8173 81741) ACPI CA Core Subsystem: 8175 8176Replaced the AcpiOsQueueForExecution interface with a new interface named 8177AcpiOsExecute. The major difference is that the new interface does not 8178have 8179a Priority parameter, this appeared to be useless and has been replaced 8180by 8181a 8182Type parameter. The Type tells the host what type of execution is being 8183requested, such as global lock handler, notify handler, GPE handler, etc. 8184This allows the host to queue and execute the request as appropriate for 8185the 8186request type, possibly using different work queues and different 8187priorities 8188for the various request types. This enables fixes for multithreading 8189deadlock problems such as BZ #5534, and will require changes to all 8190existing 8191OS interface layers. (Alexey Starikovskiy and Bob Moore) 8192 8193Fixed a possible memory leak associated with the support for the so- 8194called 8195"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 8196Suietov) 8197 8198Fixed a problem with the Load() operator where a table load from an 8199operation region could overwrite an internal table buffer by up to 7 8200bytes 8201and cause alignment faults on IPF systems. (With assistance from Luming 8202Yu) 8203 8204Example Code and Data Size: These are the sizes for the OS-independent 8205acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8206debug version of the code includes the debug output trace mechanism and 8207has 8208a much larger code and data size. 8209 8210 Previous Release: 8211 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8212 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8213 Current Release: 8214 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8215 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8216 8217 8218 82192) iASL Compiler/Disassembler and Tools: 8220 8221Disassembler: Implemented support to cross reference the internal 8222namespace 8223and automatically generate ASL External() statements for symbols not 8224defined 8225within the current table being disassembled. This will simplify the 8226disassembly and recompilation of interdependent tables such as SSDTs 8227since 8228these statements will no longer have to be added manually. 8229 8230Disassembler: Implemented experimental support to automatically detect 8231invocations of external control methods and generate appropriate 8232External() 8233statements. This is problematic because the AML cannot be correctly 8234parsed 8235until the number of arguments for each control method is known. 8236Currently, 8237standalone method invocations and invocations as the source operand of a 8238Store() statement are supported. 8239 8240Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 8241LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 8242LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 8243more readable and likely closer to the original ASL source. 8244 8245---------------------------------------- 824621 April 2006. Summary of changes for version 20060421: 8247 82481) ACPI CA Core Subsystem: 8249 8250Removed a device initialization optimization introduced in 20051216 where 8251the _STA method was not run unless an _INI was also present for the same 8252device. This optimization could cause problems because it could allow 8253_INI 8254methods to be run within a not-present device subtree. (If a not-present 8255device had no _INI, _STA would not be run, the not-present status would 8256not 8257be discovered, and the children of the device would be incorrectly 8258traversed.) 8259 8260Implemented a new _STA optimization where namespace subtrees that do not 8261contain _INI are identified and ignored during device initialization. 8262Selectively running _STA can significantly improve boot time on large 8263machines (with assistance from Len Brown.) 8264 8265Implemented support for the device initialization case where the returned 8266_STA flags indicate a device not-present but functioning. In this case, 8267_INI 8268is not run, but the device children are examined for presence, as per the 8269ACPI specification. 8270 8271Implemented an additional change to the IndexField support in order to 8272conform to MS behavior. The value written to the Index Register is not 8273simply a byte offset, it is a byte offset in units of the access width of 8274the parent Index Field. (Fiodor Suietov) 8275 8276Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 8277interface is called during the creation of all AML operation regions, and 8278allows the host OS to exert control over what addresses it will allow the 8279AML code to access. Operation Regions whose addresses are disallowed will 8280cause a runtime exception when they are actually accessed (will not 8281affect 8282or abort table loading.) See oswinxf or osunixxf for an example 8283implementation. 8284 8285Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 8286interface allows the host OS to match the various "optional" 8287interface/behavior strings for the _OSI predefined control method as 8288appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 8289for an example implementation. 8290 8291Restructured and corrected various problems in the exception handling 8292code 8293paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 8294(with assistance from Takayoshi Kochi.) 8295 8296Modified the Linux source converter to ignore quoted string literals 8297while 8298converting identifiers from mixed to lower case. This will correct 8299problems 8300with the disassembler and other areas where such strings must not be 8301modified. 8302 8303The ACPI_FUNCTION_* macros no longer require quotes around the function 8304name. This allows the Linux source converter to convert the names, now 8305that 8306the converter ignores quoted strings. 8307 8308Example Code and Data Size: These are the sizes for the OS-independent 8309acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8310debug version of the code includes the debug output trace mechanism and 8311has 8312a much larger code and data size. 8313 8314 Previous Release: 8315 8316 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8317 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8318 Current Release: 8319 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8320 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8321 8322 83232) iASL Compiler/Disassembler and Tools: 8324 8325Implemented 3 new warnings for iASL, and implemented multiple warning 8326levels 8327(w2 flag). 8328 83291) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 8330not 8331WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 8332check for the possible timeout, a warning is issued. 8333 83342) Useless operators: If an ASL operator does not specify an optional 8335target 8336operand and it also does not use the function return value from the 8337operator, a warning is issued since the operator effectively does 8338nothing. 8339 83403) Unreferenced objects: If a namespace object is created, but never 8341referenced, a warning is issued. This is a warning level 2 since there 8342are 8343cases where this is ok, such as when a secondary table is loaded that 8344uses 8345the unreferenced objects. Even so, care is taken to only flag objects 8346that 8347don't look like they will ever be used. For example, the reserved methods 8348(starting with an underscore) are usually not referenced because it is 8349expected that the OS will invoke them. 8350 8351---------------------------------------- 835231 March 2006. Summary of changes for version 20060331: 8353 83541) ACPI CA Core Subsystem: 8355 8356Implemented header file support for the following additional ACPI tables: 8357ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 8358support, 8359all current and known ACPI tables are now defined in the ACPICA headers 8360and 8361are available for use by device drivers and other software. 8362 8363Implemented support to allow tables that contain ACPI names with invalid 8364characters to be loaded. Previously, this would cause the table load to 8365fail, but since there are several known cases of such tables on existing 8366machines, this change was made to enable ACPI support for them. Also, 8367this 8368matches the behavior of the Microsoft ACPI implementation. 8369 8370Fixed a couple regressions introduced during the memory optimization in 8371the 837220060317 release. The namespace node definition required additional 8373reorganization and an internal datatype that had been changed to 8-bit 8374was 8375restored to 32-bit. (Valery Podrezov) 8376 8377Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 8378could be passed through to AcpiOsReleaseObject which is unexpected. Such 8379null pointers are now trapped and ignored, matching the behavior of the 8380previous implementation before the deployment of AcpiOsReleaseObject. 8381(Valery Podrezov, Fiodor Suietov) 8382 8383Fixed a memory mapping leak during the deletion of a SystemMemory 8384operation 8385region where a cached memory mapping was not deleted. This became a 8386noticeable problem for operation regions that are defined within 8387frequently 8388used control methods. (Dana Meyers) 8389 8390Reorganized the ACPI table header files into two main files: one for the 8391ACPI tables consumed by the ACPICA core, and another for the 8392miscellaneous 8393ACPI tables that are consumed by the drivers and other software. The 8394various 8395FADT definitions were merged into one common section and three different 8396tables (ACPI 1.0, 1.0+, and 2.0) 8397 8398Example Code and Data Size: These are the sizes for the OS-independent 8399acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8400debug version of the code includes the debug output trace mechanism and 8401has 8402a much larger code and data size. 8403 8404 Previous Release: 8405 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8406 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8407 Current Release: 8408 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8409 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8410 8411 84122) iASL Compiler/Disassembler and Tools: 8413 8414Disassembler: Implemented support to decode and format all non-AML ACPI 8415tables (tables other than DSDTs and SSDTs.) This includes the new tables 8416added to the ACPICA headers, therefore all current and known ACPI tables 8417are 8418supported. 8419 8420Disassembler: The change to allow ACPI names with invalid characters also 8421enables the disassembly of such tables. Invalid characters within names 8422are 8423changed to '*' to make the name printable; the iASL compiler will still 8424generate an error for such names, however, since this is an invalid ACPI 8425character. 8426 8427Implemented an option for AcpiXtract (-a) to extract all tables found in 8428the 8429input file. The default invocation extracts only the DSDTs and SSDTs. 8430 8431Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 8432makefile for the AcpiXtract utility. 8433 8434---------------------------------------- 843517 March 2006. Summary of changes for version 20060317: 8436 84371) ACPI CA Core Subsystem: 8438 8439Implemented the use of a cache object for all internal namespace nodes. 8440Since there are about 1000 static nodes in a typical system, this will 8441decrease memory use for cache implementations that minimize per- 8442allocation 8443overhead (such as a slab allocator.) 8444 8445Removed the reference count mechanism for internal namespace nodes, since 8446it 8447was deemed unnecessary. This reduces the size of each namespace node by 8448about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 8449case, 8450and 32 bytes for the 64-bit case. 8451 8452Optimized several internal data structures to reduce object size on 64- 8453bit 8454platforms by packing data within the 64-bit alignment. This includes the 8455frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 8456instances corresponding to the namespace objects. 8457 8458Added two new strings for the predefined _OSI method: "Windows 2001.1 8459SP1" 8460and "Windows 2006". 8461 8462Split the allocation tracking mechanism out to a separate file, from 8463utalloc.c to uttrack.c. This mechanism appears to be only useful for 8464application-level code. Kernels may wish to not include uttrack.c in 8465distributions. 8466 8467Removed all remnants of the obsolete ACPI_REPORT_* macros and the 8468associated 8469code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 8470macros.) 8471 8472Code and Data Size: These are the sizes for the acpica.lib produced by 8473the 8474Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8475ACPI 8476driver or OSPM code. The debug version of the code includes the debug 8477output 8478trace mechanism and has a much larger code and data size. Note that these 8479values will vary depending on the efficiency of the compiler and the 8480compiler options used during generation. 8481 8482 Previous Release: 8483 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8484 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8485 Current Release: 8486 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8487 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8488 8489 84902) iASL Compiler/Disassembler and Tools: 8491 8492Implemented an ANSI C version of the acpixtract utility. This version 8493will 8494automatically extract the DSDT and all SSDTs from the input acpidump text 8495file and dump the binary output to separate files. It can also display a 8496summary of the input file including the headers for each table found and 8497will extract any single ACPI table, with any signature. (See 8498source/tools/acpixtract) 8499 8500---------------------------------------- 850110 March 2006. Summary of changes for version 20060310: 8502 85031) ACPI CA Core Subsystem: 8504 8505Tagged all external interfaces to the subsystem with the new 8506ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 8507assist 8508kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 8509macro. The default definition is NULL. 8510 8511Added the ACPI_THREAD_ID type for the return value from 8512AcpiOsGetThreadId. 8513This allows the host to define this as necessary to simplify kernel 8514integration. The default definition is ACPI_NATIVE_UINT. 8515 8516Fixed two interpreter problems related to error processing, the deletion 8517of 8518objects, and placing invalid pointers onto the internal operator result 8519stack. BZ 6028, 6151 (Valery Podrezov) 8520 8521Increased the reference count threshold where a warning is emitted for 8522large 8523reference counts in order to eliminate unnecessary warnings on systems 8524with 8525large namespaces (especially 64-bit.) Increased the value from 0x400 to 85260x800. 8527 8528Due to universal disagreement as to the meaning of the 'c' in the 8529calloc() 8530function, the ACPI_MEM_CALLOCATE macro has been renamed to 8531ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 8532ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 8533ACPI_FREE. 8534 8535Code and Data Size: These are the sizes for the acpica.lib produced by 8536the 8537Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8538ACPI 8539driver or OSPM code. The debug version of the code includes the debug 8540output 8541trace mechanism and has a much larger code and data size. Note that these 8542values will vary depending on the efficiency of the compiler and the 8543compiler options used during generation. 8544 8545 Previous Release: 8546 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8547 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8548 Current Release: 8549 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8550 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8551 8552 85532) iASL Compiler/Disassembler: 8554 8555Disassembler: implemented support for symbolic resource descriptor 8556references. If a CreateXxxxField operator references a fixed offset 8557within 8558a 8559resource descriptor, a name is assigned to the descriptor and the offset 8560is 8561translated to the appropriate resource tag and pathname. The addition of 8562this support brings the disassembled code very close to the original ASL 8563source code and helps eliminate run-time errors when the disassembled 8564code 8565is modified (and recompiled) in such a way as to invalidate the original 8566fixed offsets. 8567 8568Implemented support for a Descriptor Name as the last parameter to the 8569ASL 8570Register() macro. This parameter was inadvertently left out of the ACPI 8571specification, and will be added for ACPI 3.0b. 8572 8573Fixed a problem where the use of the "_OSI" string (versus the full path 8574"\_OSI") caused an internal compiler error. ("No back ptr to op") 8575 8576Fixed a problem with the error message that occurs when an invalid string 8577is 8578used for a _HID object (such as one with an embedded asterisk: 8579"*PNP010A".) 8580The correct message is now displayed. 8581 8582---------------------------------------- 858317 February 2006. Summary of changes for version 20060217: 8584 85851) ACPI CA Core Subsystem: 8586 8587Implemented a change to the IndexField support to match the behavior of 8588the 8589Microsoft AML interpreter. The value written to the Index register is now 8590a 8591byte offset, no longer an index based upon the width of the Data 8592register. 8593This should fix IndexField problems seen on some machines where the Data 8594register is not exactly one byte wide. The ACPI specification will be 8595clarified on this point. 8596 8597Fixed a problem where several resource descriptor types could overrun the 8598internal descriptor buffer due to size miscalculation: VendorShort, 8599VendorLong, and Interrupt. This was noticed on IA64 machines, but could 8600affect all platforms. 8601 8602Fixed a problem where individual resource descriptors were misaligned 8603within 8604the internal buffer, causing alignment faults on IA64 platforms. 8605 8606Code and Data Size: These are the sizes for the acpica.lib produced by 8607the 8608Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8609ACPI 8610driver or OSPM code. The debug version of the code includes the debug 8611output 8612trace mechanism and has a much larger code and data size. Note that these 8613values will vary depending on the efficiency of the compiler and the 8614compiler options used during generation. 8615 8616 Previous Release: 8617 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8618 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8619 Current Release: 8620 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8621 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8622 8623 86242) iASL Compiler/Disassembler: 8625 8626Implemented support for new reserved names: _WDG and _WED are Microsoft 8627extensions for Windows Instrumentation Management, _TDL is a new ACPI- 8628defined method (Throttling Depth Limit.) 8629 8630Fixed a problem where a zero-length VendorShort or VendorLong resource 8631descriptor was incorrectly emitted as a descriptor of length one. 8632 8633---------------------------------------- 863410 February 2006. Summary of changes for version 20060210: 8635 86361) ACPI CA Core Subsystem: 8637 8638Removed a couple of extraneous ACPI_ERROR messages that appeared during 8639normal execution. These became apparent after the conversion from 8640ACPI_DEBUG_PRINT. 8641 8642Fixed a problem where the CreateField operator could hang if the BitIndex 8643or 8644NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 8645 8646Fixed a problem where a DeRefOf operation on a buffer object incorrectly 8647failed with an exception. This also fixes a couple of related RefOf and 8648DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 8649 8650Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 8651of 8652AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 8653BZ 86545480) 8655 8656Implemented a memory cleanup at the end of the execution of each 8657iteration 8658of an AML While() loop, preventing the accumulation of outstanding 8659objects. 8660(Valery Podrezov, BZ 5427) 8661 8662Eliminated a chunk of duplicate code in the object resolution code. 8663(Valery 8664Podrezov, BZ 5336) 8665 8666Fixed several warnings during the 64-bit code generation. 8667 8668The AcpiSrc source code conversion tool now inserts one line of 8669whitespace 8670after an if() statement that is followed immediately by a comment, 8671improving 8672readability of the Linux code. 8673 8674Code and Data Size: The current and previous library sizes for the core 8675subsystem are shown below. These are the code and data sizes for the 8676acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8677These 8678values do not include any ACPI driver or OSPM code. The debug version of 8679the 8680code includes the debug output trace mechanism and has a much larger code 8681and data size. Note that these values will vary depending on the 8682efficiency 8683of the compiler and the compiler options used during generation. 8684 8685 Previous Release: 8686 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8687 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8688 Current Release: 8689 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8690 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8691 8692 86932) iASL Compiler/Disassembler: 8694 8695Fixed a problem with the disassembly of a BankField operator with a 8696complex 8697expression for the BankValue parameter. 8698 8699---------------------------------------- 870027 January 2006. Summary of changes for version 20060127: 8701 87021) ACPI CA Core Subsystem: 8703 8704Implemented support in the Resource Manager to allow unresolved 8705namestring 8706references within resource package objects for the _PRT method. This 8707support 8708is in addition to the previously implemented unresolved reference support 8709within the AML parser. If the interpreter slack mode is enabled, these 8710unresolved references will be passed through to the caller as a NULL 8711package 8712entry. 8713 8714Implemented and deployed new macros and functions for error and warning 8715messages across the subsystem. These macros are simpler and generate less 8716code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 8717ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 8718macros remain defined to allow ACPI drivers time to migrate to the new 8719macros. 8720 8721Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 8722the 8723Acquire/Release Lock OSL interfaces. 8724 8725Fixed a problem where Alias ASL operators are sometimes not correctly 8726resolved, in both the interpreter and the iASL compiler. 8727 8728Fixed several problems with the implementation of the 8729ConcatenateResTemplate 8730ASL operator. As per the ACPI specification, zero length buffers are now 8731treated as a single EndTag. One-length buffers always cause a fatal 8732exception. Non-zero length buffers that do not end with a full 2-byte 8733EndTag 8734cause a fatal exception. 8735 8736Fixed a possible structure overwrite in the AcpiGetObjectInfo external 8737interface. (With assistance from Thomas Renninger) 8738 8739Code and Data Size: The current and previous library sizes for the core 8740subsystem are shown below. These are the code and data sizes for the 8741acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8742These 8743values do not include any ACPI driver or OSPM code. The debug version of 8744the 8745code includes the debug output trace mechanism and has a much larger code 8746and data size. Note that these values will vary depending on the 8747efficiency 8748of the compiler and the compiler options used during generation. 8749 8750 Previous Release: 8751 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8752 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8753 Current Release: 8754 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8755 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8756 8757 87582) iASL Compiler/Disassembler: 8759 8760Fixed an internal error that was generated for any forward references to 8761ASL 8762Alias objects. 8763 8764---------------------------------------- 876513 January 2006. Summary of changes for version 20060113: 8766 87671) ACPI CA Core Subsystem: 8768 8769Added 2006 copyright to all module headers and signons. This affects 8770virtually every file in the ACPICA core subsystem, iASL compiler, and the 8771utilities. 8772 8773Enhanced the ACPICA error reporting in order to simplify user migration 8774to 8775the non-debug version of ACPICA. Replaced all instances of the 8776ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 8777debug 8778levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 8779respectively. This preserves all error and warning messages in the non- 8780debug 8781version of the ACPICA code (this has been referred to as the "debug lite" 8782option.) Over 200 cases were converted to create a total of over 380 8783error/warning messages across the ACPICA code. This increases the code 8784and 8785data size of the default non-debug version of the code somewhat (about 878613K), 8787but all error/warning reporting may be disabled if desired (and code 8788eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 8789configuration option. The size of the debug version of ACPICA remains 8790about 8791the same. 8792 8793Fixed a memory leak within the AML Debugger "Set" command. One object was 8794not properly deleted for every successful invocation of the command. 8795 8796Code and Data Size: The current and previous library sizes for the core 8797subsystem are shown below. These are the code and data sizes for the 8798acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8799These 8800values do not include any ACPI driver or OSPM code. The debug version of 8801the 8802code includes the debug output trace mechanism and has a much larger code 8803and data size. Note that these values will vary depending on the 8804efficiency 8805of the compiler and the compiler options used during generation. 8806 8807 Previous Release: 8808 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8809 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8810 Current Release: 8811 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8812 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8813 8814 88152) iASL Compiler/Disassembler: 8816 8817The compiler now officially supports the ACPI 3.0a specification that was 8818released on December 30, 2005. (Specification is available at 8819www.acpi.info) 8820 8821---------------------------------------- 882216 December 2005. Summary of changes for version 20051216: 8823 88241) ACPI CA Core Subsystem: 8825 8826Implemented optional support to allow unresolved names within ASL Package 8827objects. A null object is inserted in the package when a named reference 8828cannot be located in the current namespace. Enabled via the interpreter 8829slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 8830machines 8831that contain such code. 8832 8833Implemented an optimization to the initialization sequence that can 8834improve 8835boot time. During ACPI device initialization, the _STA method is now run 8836if 8837and only if the _INI method exists. The _STA method is used to determine 8838if 8839the device is present; An _INI can only be run if _STA returns present, 8840but 8841it is a waste of time to run the _STA method if the _INI does not exist. 8842(Prototype and assistance from Dong Wei) 8843 8844Implemented use of the C99 uintptr_t for the pointer casting macros if it 8845is 8846available in the current compiler. Otherwise, the default (void *) cast 8847is 8848used as before. 8849 8850Fixed some possible memory leaks found within the execution path of the 8851Break, Continue, If, and CreateField operators. (Valery Podrezov) 8852 8853Fixed a problem introduced in the 20051202 release where an exception is 8854generated during method execution if a control method attempts to declare 8855another method. 8856 8857Moved resource descriptor string constants that are used by both the AML 8858disassembler and AML debugger to the common utilities directory so that 8859these components are independent. 8860 8861Implemented support in the AcpiExec utility (-e switch) to globally 8862ignore 8863exceptions during control method execution (method is not aborted.) 8864 8865Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 8866generation. 8867 8868Code and Data Size: The current and previous library sizes for the core 8869subsystem are shown below. These are the code and data sizes for the 8870acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8871These 8872values do not include any ACPI driver or OSPM code. The debug version of 8873the 8874code includes the debug output trace mechanism and has a much larger code 8875and data size. Note that these values will vary depending on the 8876efficiency 8877of the compiler and the compiler options used during generation. 8878 8879 Previous Release: 8880 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8881 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8882 Current Release: 8883 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8884 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8885 8886 88872) iASL Compiler/Disassembler: 8888 8889Fixed a problem where a CPU stack overflow fault could occur if a 8890recursive 8891method call was made from within a Return statement. 8892 8893---------------------------------------- 889402 December 2005. Summary of changes for version 20051202: 8895 88961) ACPI CA Core Subsystem: 8897 8898Modified the parsing of control methods to no longer create namespace 8899objects during the first pass of the parse. Objects are now created only 8900during the execute phase, at the moment the namespace creation operator 8901is 8902encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 8903This 8904should eliminate ALREADY_EXISTS exceptions seen on some machines where 8905reentrant control methods are protected by an AML mutex. The mutex will 8906now 8907correctly block multiple threads from attempting to create the same 8908object 8909more than once. 8910 8911Increased the number of available Owner Ids for namespace object tracking 8912from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 8913on 8914some machines with a large number of ACPI tables (either static or 8915dynamic). 8916 8917Fixed a problem with the AcpiExec utility where a fault could occur when 8918the 8919-b switch (batch mode) is used. 8920 8921Enhanced the namespace dump routine to output the owner ID for each 8922namespace object. 8923 8924Code and Data Size: The current and previous library sizes for the core 8925subsystem are shown below. These are the code and data sizes for the 8926acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8927These 8928values do not include any ACPI driver or OSPM code. The debug version of 8929the 8930code includes the debug output trace mechanism and has a much larger code 8931and data size. Note that these values will vary depending on the 8932efficiency 8933of the compiler and the compiler options used during generation. 8934 8935 Previous Release: 8936 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8937 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8938 Current Release: 8939 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8940 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8941 8942 89432) iASL Compiler/Disassembler: 8944 8945Fixed a parse error during compilation of certain Switch/Case constructs. 8946To 8947simplify the parse, the grammar now allows for multiple Default 8948statements 8949and this error is now detected and flagged during the analysis phase. 8950 8951Disassembler: The disassembly now includes the contents of the original 8952table header within a comment at the start of the file. This includes the 8953name and version of the original ASL compiler. 8954 8955---------------------------------------- 895617 November 2005. Summary of changes for version 20051117: 8957 89581) ACPI CA Core Subsystem: 8959 8960Fixed a problem in the AML parser where the method thread count could be 8961decremented below zero if any errors occurred during the method parse 8962phase. 8963This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 8964machines. 8965This also fixed a related regression with the mechanism that detects and 8966corrects methods that cannot properly handle reentrancy (related to the 8967deployment of the new OwnerId mechanism.) 8968 8969Eliminated the pre-parsing of control methods (to detect errors) during 8970table load. Related to the problem above, this was causing unwind issues 8971if 8972any errors occurred during the parse, and it seemed to be overkill. A 8973table 8974load should not be aborted if there are problems with any single control 8975method, thus rendering this feature rather pointless. 8976 8977Fixed a problem with the new table-driven resource manager where an 8978internal 8979buffer overflow could occur for small resource templates. 8980 8981Implemented a new external interface, AcpiGetVendorResource. This 8982interface 8983will find and return a vendor-defined resource descriptor within a _CRS 8984or 8985_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 8986Helgaas. 8987 8988Removed the length limit (200) on string objects as per the upcoming ACPI 89893.0A specification. This affects the following areas of the interpreter: 89901) 8991any implicit conversion of a Buffer to a String, 2) a String object 8992result 8993of the ASL Concatentate operator, 3) the String object result of the ASL 8994ToString operator. 8995 8996Fixed a problem in the Windows OS interface layer (OSL) where a 8997WAIT_FOREVER 8998on a semaphore object would incorrectly timeout. This allows the 8999multithreading features of the AcpiExec utility to work properly under 9000Windows. 9001 9002Updated the Linux makefiles for the iASL compiler and AcpiExec to include 9003the recently added file named "utresrc.c". 9004 9005Code and Data Size: The current and previous library sizes for the core 9006subsystem are shown below. These are the code and data sizes for the 9007acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9008These 9009values do not include any ACPI driver or OSPM code. The debug version of 9010the 9011code includes the debug output trace mechanism and has a much larger code 9012and data size. Note that these values will vary depending on the 9013efficiency 9014of the compiler and the compiler options used during generation. 9015 9016 Previous Release: 9017 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9018 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9019 Current Release: 9020 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9021 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9022 9023 90242) iASL Compiler/Disassembler: 9025 9026Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 9027specification. For the iASL compiler, this means that string literals 9028within 9029the source ASL can be of any length. 9030 9031Enhanced the listing output to dump the AML code for resource descriptors 9032immediately after the ASL code for each descriptor, instead of in a block 9033at 9034the end of the entire resource template. 9035 9036Enhanced the compiler debug output to dump the entire original parse tree 9037constructed during the parse phase, before any transforms are applied to 9038the 9039tree. The transformed tree is dumped also. 9040 9041---------------------------------------- 904202 November 2005. Summary of changes for version 20051102: 9043 90441) ACPI CA Core Subsystem: 9045 9046Modified the subsystem initialization sequence to improve GPE support. 9047The 9048GPE initialization has been split into two parts in order to defer 9049execution 9050of the _PRW methods (Power Resources for Wake) until after the hardware 9051is 9052fully initialized and the SCI handler is installed. This allows the _PRW 9053methods to access fields protected by the Global Lock. This will fix 9054systems 9055where a NO_GLOBAL_LOCK exception has been seen during initialization. 9056 9057Converted the ACPI internal object disassemble and display code within 9058the 9059AML debugger to fully table-driven operation, reducing code size and 9060increasing maintainability. 9061 9062Fixed a regression with the ConcatenateResTemplate() ASL operator 9063introduced 9064in the 20051021 release. 9065 9066Implemented support for "local" internal ACPI object types within the 9067debugger "Object" command and the AcpiWalkNamespace external interfaces. 9068These local types include RegionFields, BankFields, IndexFields, Alias, 9069and 9070reference objects. 9071 9072Moved common AML resource handling code into a new file, "utresrc.c". 9073This 9074code is shared by both the Resource Manager and the AML Debugger. 9075 9076Code and Data Size: The current and previous library sizes for the core 9077subsystem are shown below. These are the code and data sizes for the 9078acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9079These 9080values do not include any ACPI driver or OSPM code. The debug version of 9081the 9082code includes the debug output trace mechanism and has a much larger code 9083and data size. Note that these values will vary depending on the 9084efficiency 9085of the compiler and the compiler options used during generation. 9086 9087 Previous Release: 9088 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9089 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9090 Current Release: 9091 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9092 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9093 9094 90952) iASL Compiler/Disassembler: 9096 9097Fixed a problem with very large initializer lists (more than 4000 9098elements) 9099for both Buffer and Package objects where the parse stack could overflow. 9100 9101Enhanced the pre-compile source code scan for non-ASCII characters to 9102ignore 9103characters within comment fields. The scan is now always performed and is 9104no 9105longer optional, detecting invalid characters within a source file 9106immediately rather than during the parse phase or later. 9107 9108Enhanced the ASL grammar definition to force early reductions on all 9109list- 9110style grammar elements so that the overall parse stack usage is greatly 9111reduced. This should improve performance and reduce the possibility of 9112parse 9113stack overflow. 9114 9115Eliminated all reduce/reduce conflicts in the iASL parser generation. 9116Also, 9117with the addition of a %expected statement, the compiler generates from 9118source with no warnings. 9119 9120Fixed a possible segment fault in the disassembler if the input filename 9121does not contain a "dot" extension (Thomas Renninger). 9122 9123---------------------------------------- 912421 October 2005. Summary of changes for version 20051021: 9125 91261) ACPI CA Core Subsystem: 9127 9128Implemented support for the EM64T and other x86-64 processors. This 9129essentially entails recognizing that these processors support non-aligned 9130memory transfers. Previously, all 64-bit processors were assumed to lack 9131hardware support for non-aligned transfers. 9132 9133Completed conversion of the Resource Manager to nearly full table-driven 9134operation. Specifically, the resource conversion code (convert AML to 9135internal format and the reverse) and the debug code to dump internal 9136resource descriptors are fully table-driven, reducing code and data size 9137and 9138improving maintainability. 9139 9140The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 9141word 9142on 64-bit processors instead of a fixed 32-bit word. (With assistance 9143from 9144Alexey Starikovskiy) 9145 9146Implemented support within the resource conversion code for the Type- 9147Specific byte within the various ACPI 3.0 *WordSpace macros. 9148 9149Fixed some issues within the resource conversion code for the type- 9150specific 9151flags for both Memory and I/O address resource descriptors. For Memory, 9152implemented support for the MTP and TTP flags. For I/O, split the TRS and 9153TTP flags into two separate fields. 9154 9155Code and Data Size: The current and previous library sizes for the core 9156subsystem are shown below. These are the code and data sizes for the 9157acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9158These 9159values do not include any ACPI driver or OSPM code. The debug version of 9160the 9161code includes the debug output trace mechanism and has a much larger code 9162and data size. Note that these values will vary depending on the 9163efficiency 9164of the compiler and the compiler options used during generation. 9165 9166 Previous Release: 9167 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9168 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9169 Current Release: 9170 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9171 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9172 9173 9174 91752) iASL Compiler/Disassembler: 9176 9177Relaxed a compiler restriction that disallowed a ResourceIndex byte if 9178the 9179corresponding ResourceSource string was not also present in a resource 9180descriptor declaration. This restriction caused problems with existing 9181AML/ASL code that includes the Index byte without the string. When such 9182AML 9183was disassembled, it could not be compiled without modification. Further, 9184the modified code created a resource template with a different size than 9185the 9186original, breaking code that used fixed offsets into the resource 9187template 9188buffer. 9189 9190Removed a recent feature of the disassembler to ignore a lone 9191ResourceIndex 9192byte. This byte is now emitted if present so that the exact AML can be 9193reproduced when the disassembled code is recompiled. 9194 9195Improved comments and text alignment for the resource descriptor code 9196emitted by the disassembler. 9197 9198Implemented disassembler support for the ACPI 3.0 AccessSize field within 9199a 9200Register() resource descriptor. 9201 9202---------------------------------------- 920330 September 2005. Summary of changes for version 20050930: 9204 92051) ACPI CA Core Subsystem: 9206 9207Completed a major overhaul of the Resource Manager code - specifically, 9208optimizations in the area of the AML/internal resource conversion code. 9209The 9210code has been optimized to simplify and eliminate duplicated code, CPU 9211stack 9212use has been decreased by optimizing function parameters and local 9213variables, and naming conventions across the manager have been 9214standardized 9215for clarity and ease of maintenance (this includes function, parameter, 9216variable, and struct/typedef names.) The update may force changes in some 9217driver code, depending on how resources are handled by the host OS. 9218 9219All Resource Manager dispatch and information tables have been moved to a 9220single location for clarity and ease of maintenance. One new file was 9221created, named "rsinfo.c". 9222 9223The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 9224guarantee that the argument is not evaluated twice, making them less 9225prone 9226to macro side-effects. However, since there exists the possibility of 9227additional stack use if a particular compiler cannot optimize them (such 9228as 9229in the debug generation case), the original macros are optionally 9230available. 9231Note that some invocations of the return_VALUE macro may now cause size 9232mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 9233to 9234eliminate these. (From Randy Dunlap) 9235 9236Implemented a new mechanism to enable debug tracing for individual 9237control 9238methods. A new external interface, AcpiDebugTrace, is provided to enable 9239this mechanism. The intent is to allow the host OS to easily enable and 9240disable tracing for problematic control methods. This interface can be 9241easily exposed to a user or debugger interface if desired. See the file 9242psxface.c for details. 9243 9244AcpiUtCallocate will now return a valid pointer if a length of zero is 9245specified - a length of one is used and a warning is issued. This matches 9246the behavior of AcpiUtAllocate. 9247 9248Code and Data Size: The current and previous library sizes for the core 9249subsystem are shown below. These are the code and data sizes for the 9250acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9251These 9252values do not include any ACPI driver or OSPM code. The debug version of 9253the 9254code includes the debug output trace mechanism and has a much larger code 9255and data size. Note that these values will vary depending on the 9256efficiency 9257of the compiler and the compiler options used during generation. 9258 9259 Previous Release: 9260 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9261 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9262 Current Release: 9263 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9264 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9265 9266 92672) iASL Compiler/Disassembler: 9268 9269A remark is issued if the effective compile-time length of a package or 9270buffer is zero. Previously, this was a warning. 9271 9272---------------------------------------- 927316 September 2005. Summary of changes for version 20050916: 9274 92751) ACPI CA Core Subsystem: 9276 9277Fixed a problem within the Resource Manager where support for the Generic 9278Register descriptor was not fully implemented. This descriptor is now 9279fully 9280recognized, parsed, disassembled, and displayed. 9281 9282Completely restructured the Resource Manager code to utilize table-driven 9283dispatch and lookup, eliminating many of the large switch() statements. 9284This 9285reduces overall subsystem code size and code complexity. Affects the 9286resource parsing and construction, disassembly, and debug dump output. 9287 9288Cleaned up and restructured the debug dump output for all resource 9289descriptors. Improved readability of the output and reduced code size. 9290 9291Fixed a problem where changes to internal data structures caused the 9292optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 9293 9294Code and Data Size: The current and previous library sizes for the core 9295subsystem are shown below. These are the code and data sizes for the 9296acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9297These 9298values do not include any ACPI driver or OSPM code. The debug version of 9299the 9300code includes the debug output trace mechanism and has a much larger code 9301and data size. Note that these values will vary depending on the 9302efficiency 9303of the compiler and the compiler options used during generation. 9304 9305 Previous Release: 9306 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9307 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9308 Current Release: 9309 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9310 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9311 9312 93132) iASL Compiler/Disassembler: 9314 9315Updated the disassembler to automatically insert an EndDependentFn() 9316macro 9317into the ASL stream if this macro is missing in the original AML code, 9318simplifying compilation of the resulting ASL module. 9319 9320Fixed a problem in the disassembler where a disassembled ResourceSource 9321string (within a large resource descriptor) was not surrounded by quotes 9322and 9323not followed by a comma, causing errors when the resulting ASL module was 9324compiled. Also, escape sequences within a ResourceSource string are now 9325handled correctly (especially "\\") 9326 9327---------------------------------------- 932802 September 2005. Summary of changes for version 20050902: 9329 93301) ACPI CA Core Subsystem: 9331 9332Fixed a problem with the internal Owner ID allocation and deallocation 9333mechanisms for control method execution and recursive method invocation. 9334This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 9335messages seen on some systems. Recursive method invocation depth is 9336currently limited to 255. (Alexey Starikovskiy) 9337 9338Completely eliminated all vestiges of support for the "module-level 9339executable code" until this support is fully implemented and debugged. 9340This 9341should eliminate the NO_RETURN_VALUE exceptions seen during table load on 9342some systems that invoke this support. 9343 9344Fixed a problem within the resource manager code where the transaction 9345flags 9346for a 64-bit address descriptor were handled incorrectly in the type- 9347specific flag byte. 9348 9349Consolidated duplicate code within the address descriptor resource 9350manager 9351code, reducing overall subsystem code size. 9352 9353Fixed a fault when using the AML debugger "disassemble" command to 9354disassemble individual control methods. 9355 9356Removed references to the "release_current" directory within the Unix 9357release package. 9358 9359Code and Data Size: The current and previous core subsystem library sizes 9360are shown below. These are the code and data sizes for the acpica.lib 9361produced by the Microsoft Visual C++ 6.0 compiler. These values do not 9362include any ACPI driver or OSPM code. The debug version of the code 9363includes 9364the debug output trace mechanism and has a much larger code and data 9365size. 9366Note that these values will vary depending on the efficiency of the 9367compiler 9368and the compiler options used during generation. 9369 9370 Previous Release: 9371 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9372 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9373 Current Release: 9374 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9375 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9376 9377 93782) iASL Compiler/Disassembler: 9379 9380Implemented an error check for illegal duplicate values in the interrupt 9381and 9382dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 9383Interrupt(). 9384 9385Implemented error checking for the Irq() and IrqNoFlags() macros to 9386detect 9387too many values in the interrupt list (16 max) and invalid values in the 9388list (range 0 - 15) 9389 9390The maximum length string literal within an ASL file is now restricted to 9391200 characters as per the ACPI specification. 9392 9393Fixed a fault when using the -ln option (generate namespace listing). 9394 9395Implemented an error check to determine if a DescriptorName within a 9396resource descriptor has already been used within the current scope. 9397 9398---------------------------------------- 939915 August 2005. Summary of changes for version 20050815: 9400 94011) ACPI CA Core Subsystem: 9402 9403Implemented a full bytewise compare to determine if a table load request 9404is 9405attempting to load a duplicate table. The compare is performed if the 9406table 9407signatures and table lengths match. This will allow different tables with 9408the same OEM Table ID and revision to be loaded - probably against the 9409ACPI 9410specification, but discovered in the field nonetheless. 9411 9412Added the changes.txt logfile to each of the zipped release packages. 9413 9414Code and Data Size: Current and previous core subsystem library sizes are 9415shown below. These are the code and data sizes for the acpica.lib 9416produced 9417by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9418any ACPI driver or OSPM code. The debug version of the code includes the 9419debug output trace mechanism and has a much larger code and data size. 9420Note 9421that these values will vary depending on the efficiency of the compiler 9422and 9423the compiler options used during generation. 9424 9425 Previous Release: 9426 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9427 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9428 Current Release: 9429 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9430 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9431 9432 94332) iASL Compiler/Disassembler: 9434 9435Fixed a problem where incorrect AML code could be generated for Package 9436objects if optimization is disabled (via the -oa switch). 9437 9438Fixed a problem with where incorrect AML code is generated for variable- 9439length packages when the package length is not specified and the number 9440of 9441initializer values is greater than 255. 9442 9443 9444---------------------------------------- 944529 July 2005. Summary of changes for version 20050729: 9446 94471) ACPI CA Core Subsystem: 9448 9449Implemented support to ignore an attempt to install/load a particular 9450ACPI 9451table more than once. Apparently there exists BIOS code that repeatedly 9452attempts to load the same SSDT upon certain events. With assistance from 9453Venkatesh Pallipadi. 9454 9455Restructured the main interface to the AML parser in order to correctly 9456handle all exceptional conditions. This will prevent leakage of the 9457OwnerId 9458resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 9459some 9460machines. With assistance from Alexey Starikovskiy. 9461 9462Support for "module level code" has been disabled in this version due to 9463a 9464number of issues that have appeared on various machines. The support can 9465be 9466enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 9467compilation. When the issues are fully resolved, the code will be enabled 9468by 9469default again. 9470 9471Modified the internal functions for debug print support to define the 9472FunctionName parameter as a (const char *) for compatibility with 9473compiler 9474built-in macros such as __FUNCTION__, etc. 9475 9476Linted the entire ACPICA source tree for both 32-bit and 64-bit. 9477 9478Implemented support to display an object count summary for the AML 9479Debugger 9480commands Object and Methods. 9481 9482Code and Data Size: Current and previous core subsystem library sizes are 9483shown below. These are the code and data sizes for the acpica.lib 9484produced 9485by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9486any ACPI driver or OSPM code. The debug version of the code includes the 9487debug output trace mechanism and has a much larger code and data size. 9488Note 9489that these values will vary depending on the efficiency of the compiler 9490and 9491the compiler options used during generation. 9492 9493 Previous Release: 9494 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9495 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9496 Current Release: 9497 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9498 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9499 9500 95012) iASL Compiler/Disassembler: 9502 9503Fixed a regression that appeared in the 20050708 version of the compiler 9504where an error message was inadvertently emitted for invocations of the 9505_OSI 9506reserved control method. 9507 9508---------------------------------------- 950908 July 2005. Summary of changes for version 20050708: 9510 95111) ACPI CA Core Subsystem: 9512 9513The use of the CPU stack in the debug version of the subsystem has been 9514considerably reduced. Previously, a debug structure was declared in every 9515function that used the debug macros. This structure has been removed in 9516favor of declaring the individual elements as parameters to the debug 9517functions. This reduces the cumulative stack use during nested execution 9518of 9519ACPI function calls at the cost of a small increase in the code size of 9520the 9521debug version of the subsystem. With assistance from Alexey Starikovskiy 9522and 9523Len Brown. 9524 9525Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 9526headers to define a macro that will return the current function name at 9527runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 9528by 9529the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 9530compiler-dependent header, the function name is saved on the CPU stack 9531(one 9532pointer per function.) This mechanism is used because apparently there 9533exists no standard ANSI-C defined macro that that returns the function 9534name. 9535 9536Redesigned and reimplemented the "Owner ID" mechanism used to track 9537namespace objects created/deleted by ACPI tables and control method 9538execution. A bitmap is now used to allocate and free the IDs, thus 9539solving 9540the wraparound problem present in the previous implementation. The size 9541of 9542the namespace node descriptor was reduced by 2 bytes as a result (Alexey 9543Starikovskiy). 9544 9545Removed the UINT32_BIT and UINT16_BIT types that were used for the 9546bitfield 9547flag definitions within the headers for the predefined ACPI tables. These 9548have been replaced by UINT8_BIT in order to increase the code portability 9549of 9550the subsystem. If the use of UINT8 remains a problem, we may be forced to 9551eliminate bitfields entirely because of a lack of portability. 9552 9553Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 9554This 9555is a frequently used function and this improvement increases the 9556performance 9557of the entire subsystem (Alexey Starikovskiy). 9558 9559Fixed several possible memory leaks and the inverse - premature object 9560deletion (Alexey Starikovskiy). 9561 9562Code and Data Size: Current and previous core subsystem library sizes are 9563shown below. These are the code and data sizes for the acpica.lib 9564produced 9565by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9566any ACPI driver or OSPM code. The debug version of the code includes the 9567debug output trace mechanism and has a much larger code and data size. 9568Note 9569that these values will vary depending on the efficiency of the compiler 9570and 9571the compiler options used during generation. 9572 9573 Previous Release: 9574 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9575 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9576 Current Release: 9577 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9578 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9579 9580---------------------------------------- 958124 June 2005. Summary of changes for version 20050624: 9582 95831) ACPI CA Core Subsystem: 9584 9585Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 9586the host-defined cache object. This allows the OSL implementation to 9587define 9588and type this object in any manner desired, simplifying the OSL 9589implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 9590Linux, and should be defined in the OS-specific header file for other 9591operating systems as required. 9592 9593Changed the interface to AcpiOsAcquireObject to directly return the 9594requested object as the function return (instead of ACPI_STATUS.) This 9595change was made for performance reasons, since this is the purpose of the 9596interface in the first place. AcpiOsAcquireObject is now similar to the 9597AcpiOsAllocate interface. 9598 9599Implemented a new AML debugger command named Businfo. This command 9600displays 9601information about all devices that have an associate _PRT object. The 9602_ADR, 9603_HID, _UID, and _CID are displayed for these devices. 9604 9605Modified the initialization sequence in AcpiInitializeSubsystem to call 9606the 9607OSL interface AcpiOslInitialize first, before any local initialization. 9608This 9609change was required because the global initialization now calls OSL 9610interfaces. 9611 9612Enhanced the Dump command to display the entire contents of Package 9613objects 9614(including all sub-objects and their values.) 9615 9616Restructured the code base to split some files because of size and/or 9617because the code logically belonged in a separate file. New files are 9618listed 9619below. All makefiles and project files included in the ACPI CA release 9620have 9621been updated. 9622 utilities/utcache.c /* Local cache interfaces */ 9623 utilities/utmutex.c /* Local mutex support */ 9624 utilities/utstate.c /* State object support */ 9625 interpreter/parser/psloop.c /* Main AML parse loop */ 9626 9627Code and Data Size: Current and previous core subsystem library sizes are 9628shown below. These are the code and data sizes for the acpica.lib 9629produced 9630by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9631any ACPI driver or OSPM code. The debug version of the code includes the 9632debug output trace mechanism and has a much larger code and data size. 9633Note 9634that these values will vary depending on the efficiency of the compiler 9635and 9636the compiler options used during generation. 9637 9638 Previous Release: 9639 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9640 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9641 Current Release: 9642 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9643 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9644 9645 96462) iASL Compiler/Disassembler: 9647 9648Fixed a regression introduced in version 20050513 where the use of a 9649Package 9650object within a Case() statement caused a compile time exception. The 9651original behavior has been restored (a Match() operator is emitted.) 9652 9653---------------------------------------- 965417 June 2005. Summary of changes for version 20050617: 9655 96561) ACPI CA Core Subsystem: 9657 9658Moved the object cache operations into the OS interface layer (OSL) to 9659allow 9660the host OS to handle these operations if desired (for example, the Linux 9661OSL will invoke the slab allocator). This support is optional; the 9662compile 9663time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 9664cache 9665code in the ACPI CA core. The new OSL interfaces are shown below. See 9666utalloc.c for an example implementation, and acpiosxf.h for the exact 9667interface definitions. With assistance from Alexey Starikovskiy. 9668 AcpiOsCreateCache 9669 AcpiOsDeleteCache 9670 AcpiOsPurgeCache 9671 AcpiOsAcquireObject 9672 AcpiOsReleaseObject 9673 9674Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 9675return 9676and restore a flags parameter. This fits better with many OS lock models. 9677Note: the current execution state (interrupt handler or not) is no longer 9678passed to these interfaces. If necessary, the OSL must determine this 9679state 9680by itself, a simple and fast operation. With assistance from Alexey 9681Starikovskiy. 9682 9683Fixed a problem in the ACPI table handling where a valid XSDT was assumed 9684present if the revision of the RSDP was 2 or greater. According to the 9685ACPI 9686specification, the XSDT is optional in all cases, and the table manager 9687therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 9688Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 9689contain 9690only the RSDT. 9691 9692Fixed an interpreter problem with the Mid() operator in the case of an 9693input 9694string where the resulting output string is of zero length. It now 9695correctly 9696returns a valid, null terminated string object instead of a string object 9697with a null pointer. 9698 9699Fixed a problem with the control method argument handling to allow a 9700store 9701to an Arg object that already contains an object of type Device. The 9702Device 9703object is now correctly overwritten. Previously, an error was returned. 9704 9705 9706Enhanced the debugger Find command to emit object values in addition to 9707the 9708found object pathnames. The output format is the same as the dump 9709namespace 9710command. 9711 9712Enhanced the debugger Set command. It now has the ability to set the 9713value 9714of any Named integer object in the namespace (Previously, only method 9715locals 9716and args could be set.) 9717 9718Code and Data Size: Current and previous core subsystem library sizes are 9719shown below. These are the code and data sizes for the acpica.lib 9720produced 9721by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9722any ACPI driver or OSPM code. The debug version of the code includes the 9723debug output trace mechanism and has a much larger code and data size. 9724Note 9725that these values will vary depending on the efficiency of the compiler 9726and 9727the compiler options used during generation. 9728 9729 Previous Release: 9730 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9731 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9732 Current Release: 9733 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9734 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9735 9736 97372) iASL Compiler/Disassembler: 9738 9739Fixed a regression in the disassembler where if/else/while constructs 9740were 9741output incorrectly. This problem was introduced in the previous release 9742(20050526). This problem also affected the single-step disassembly in the 9743debugger. 9744 9745Fixed a problem where compiling the reserved _OSI method would randomly 9746(but 9747rarely) produce compile errors. 9748 9749Enhanced the disassembler to emit compilable code in the face of 9750incorrect 9751AML resource descriptors. If the optional ResourceSourceIndex is present, 9752but the ResourceSource is not, do not emit the ResourceSourceIndex in the 9753disassembly. Otherwise, the resulting code cannot be compiled without 9754errors. 9755 9756---------------------------------------- 975726 May 2005. Summary of changes for version 20050526: 9758 97591) ACPI CA Core Subsystem: 9760 9761Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 9762the module level (not within a control method.) These opcodes are 9763executed 9764exactly once at the time the table is loaded. This type of code was legal 9765up 9766until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 9767in 9768order to provide backwards compatibility with earlier BIOS 9769implementations. 9770This eliminates the "Encountered executable code at module level" warning 9771that was previously generated upon detection of such code. 9772 9773Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 9774inadvertently be generated during the lookup of namespace objects in the 9775second pass parse of ACPI tables and control methods. It appears that 9776this 9777problem could occur during the resolution of forward references to 9778namespace 9779objects. 9780 9781Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 9782corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 9783allows the deadlock detection debug code to be compiled out in the normal 9784case, improving mutex performance (and overall subsystem performance) 9785considerably. 9786 9787Implemented a handful of miscellaneous fixes for possible memory leaks on 9788error conditions and error handling control paths. These fixes were 9789suggested by FreeBSD and the Coverity Prevent source code analysis tool. 9790 9791Added a check for a null RSDT pointer in AcpiGetFirmwareTable 9792(tbxfroot.c) 9793to prevent a fault in this error case. 9794 9795Code and Data Size: Current and previous core subsystem library sizes are 9796shown below. These are the code and data sizes for the acpica.lib 9797produced 9798by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9799any ACPI driver or OSPM code. The debug version of the code includes the 9800debug output trace mechanism and has a much larger code and data size. 9801Note 9802that these values will vary depending on the efficiency of the compiler 9803and 9804the compiler options used during generation. 9805 9806 Previous Release: 9807 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9808 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9809 Current Release: 9810 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9811 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9812 9813 98142) iASL Compiler/Disassembler: 9815 9816Implemented support to allow Type 1 and Type 2 ASL operators to appear at 9817the module level (not within a control method.) These operators will be 9818executed once at the time the table is loaded. This type of code was 9819legal 9820up until the release of ACPI 2.0B (2002) and is now supported by the iASL 9821compiler in order to provide backwards compatibility with earlier BIOS 9822ASL 9823code. 9824 9825The ACPI integer width (specified via the table revision ID or the -r 9826override, 32 or 64 bits) is now used internally during compile-time 9827constant 9828folding to ensure that constants are truncated to 32 bits if necessary. 9829Previously, the revision ID value was only emitted in the AML table 9830header. 9831 9832An error message is now generated for the Mutex and Method operators if 9833the 9834SyncLevel parameter is outside the legal range of 0 through 15. 9835 9836Fixed a problem with the Method operator ParameterTypes list handling 9837(ACPI 98383.0). Previously, more than 2 types or 2 arguments generated a syntax 9839error. 9840The actual underlying implementation of method argument typechecking is 9841still under development, however. 9842 9843---------------------------------------- 984413 May 2005. Summary of changes for version 20050513: 9845 98461) ACPI CA Core Subsystem: 9847 9848Implemented support for PCI Express root bridges -- added support for 9849device 9850PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 9851 9852The interpreter now automatically truncates incoming 64-bit constants to 985332 9854bits if currently executing out of a 32-bit ACPI table (Revision < 2). 9855This 9856also affects the iASL compiler constant folding. (Note: as per below, the 9857iASL compiler no longer allows 64-bit constants within 32-bit tables.) 9858 9859Fixed a problem where string and buffer objects with "static" pointers 9860(pointers to initialization data within an ACPI table) were not handled 9861consistently. The internal object copy operation now always copies the 9862data 9863to a newly allocated buffer, regardless of whether the source object is 9864static or not. 9865 9866Fixed a problem with the FromBCD operator where an implicit result 9867conversion was improperly performed while storing the result to the 9868target 9869operand. Since this is an "explicit conversion" operator, the implicit 9870conversion should never be performed on the output. 9871 9872Fixed a problem with the CopyObject operator where a copy to an existing 9873named object did not always completely overwrite the existing object 9874stored 9875at name. Specifically, a buffer-to-buffer copy did not delete the 9876existing 9877buffer. 9878 9879Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 9880and 9881structs for consistency. 9882 9883Code and Data Size: Current and previous core subsystem library sizes are 9884shown below. These are the code and data sizes for the acpica.lib 9885produced 9886by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9887any ACPI driver or OSPM code. The debug version of the code includes the 9888debug output trace mechanism and has a much larger code and data size. 9889Note 9890that these values will vary depending on the efficiency of the compiler 9891and 9892the compiler options used during generation. 9893 9894 Previous Release: 9895 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9896 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9897 Current Release: (Same sizes) 9898 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9899 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9900 9901 99022) iASL Compiler/Disassembler: 9903 9904The compiler now emits a warning if an attempt is made to generate a 64- 9905bit 9906integer constant from within a 32-bit ACPI table (Revision < 2). The 9907integer 9908is truncated to 32 bits. 9909 9910Fixed a problem with large package objects: if the static length of the 9911package is greater than 255, the "variable length package" opcode is 9912emitted. Previously, this caused an error. This requires an update to the 9913ACPI spec, since it currently (incorrectly) states that packages larger 9914than 9915255 elements are not allowed. 9916 9917The disassembler now correctly handles variable length packages and 9918packages 9919larger than 255 elements. 9920 9921---------------------------------------- 992208 April 2005. Summary of changes for version 20050408: 9923 99241) ACPI CA Core Subsystem: 9925 9926Fixed three cases in the interpreter where an "index" argument to an ASL 9927function was still (internally) 32 bits instead of the required 64 bits. 9928This was the Index argument to the Index, Mid, and Match operators. 9929 9930The "strupr" function is now permanently local (AcpiUtStrupr), since this 9931is 9932not a POSIX-defined function and not present in most kernel-level C 9933libraries. All references to the C library strupr function have been 9934removed 9935from the headers. 9936 9937Completed the deployment of static functions/prototypes. All prototypes 9938with 9939the static attribute have been moved from the headers to the owning C 9940file. 9941 9942Implemented an extract option (-e) for the AcpiBin utility (AML binary 9943utility). This option allows the utility to extract individual ACPI 9944tables 9945from the output of AcpiDmp. It provides the same functionality of the 9946acpixtract.pl perl script without the worry of setting the correct perl 9947options. AcpiBin runs on Windows and has not yet been generated/validated 9948in 9949the Linux/Unix environment (but should be soon). 9950 9951Updated and fixed the table dump option for AcpiBin (-d). This option 9952converts a single ACPI table to a hex/ascii file, similar to the output 9953of 9954AcpiDmp. 9955 9956Code and Data Size: Current and previous core subsystem library sizes are 9957shown below. These are the code and data sizes for the acpica.lib 9958produced 9959by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9960any ACPI driver or OSPM code. The debug version of the code includes the 9961debug output trace mechanism and has a much larger code and data size. 9962Note 9963that these values will vary depending on the efficiency of the compiler 9964and 9965the compiler options used during generation. 9966 9967 Previous Release: 9968 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9969 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9970 Current Release: 9971 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9972 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9973 9974 99752) iASL Compiler/Disassembler: 9976 9977Disassembler fix: Added a check to ensure that the table length found in 9978the 9979ACPI table header within the input file is not longer than the actual 9980input 9981file size. This indicates some kind of file or table corruption. 9982 9983---------------------------------------- 998429 March 2005. Summary of changes for version 20050329: 9985 99861) ACPI CA Core Subsystem: 9987 9988An error is now generated if an attempt is made to create a Buffer Field 9989of 9990length zero (A CreateField with a length operand of zero.) 9991 9992The interpreter now issues a warning whenever executable code at the 9993module 9994level is detected during ACPI table load. This will give some idea of the 9995prevalence of this type of code. 9996 9997Implemented support for references to named objects (other than control 9998methods) within package objects. 9999 10000Enhanced package object output for the debug object. Package objects are 10001now 10002completely dumped, showing all elements. 10003 10004Enhanced miscellaneous object output for the debug object. Any object can 10005now be written to the debug object (for example, a device object can be 10006written, and the type of the object will be displayed.) 10007 10008The "static" qualifier has been added to all local functions across both 10009the 10010core subsystem and the iASL compiler. 10011 10012The number of "long" lines (> 80 chars) within the source has been 10013significantly reduced, by about 1/3. 10014 10015Cleaned up all header files to ensure that all CA/iASL functions are 10016prototyped (even static functions) and the formatting is consistent. 10017 10018Two new header files have been added, acopcode.h and acnames.h. 10019 10020Removed several obsolete functions that were no longer used. 10021 10022Code and Data Size: Current and previous core subsystem library sizes are 10023shown below. These are the code and data sizes for the acpica.lib 10024produced 10025by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10026any ACPI driver or OSPM code. The debug version of the code includes the 10027debug output trace mechanism and has a much larger code and data size. 10028Note 10029that these values will vary depending on the efficiency of the compiler 10030and 10031the compiler options used during generation. 10032 10033 Previous Release: 10034 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10035 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10036 Current Release: 10037 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10038 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10039 10040 10041 100422) iASL Compiler/Disassembler: 10043 10044Fixed a problem with the resource descriptor generation/support. For the 10045ResourceSourceIndex and the ResourceSource fields, both must be present, 10046or 10047both must be not present - can't have one without the other. 10048 10049The compiler now returns non-zero from the main procedure if any errors 10050have 10051occurred during the compilation. 10052 10053 10054---------------------------------------- 1005509 March 2005. Summary of changes for version 20050309: 10056 100571) ACPI CA Core Subsystem: 10058 10059The string-to-buffer implicit conversion code has been modified again 10060after 10061a change to the ACPI specification. In order to match the behavior of 10062the 10063other major ACPI implementation, the target buffer is no longer truncated 10064if 10065the source string is smaller than an existing target buffer. This change 10066requires an update to the ACPI spec, and should eliminate the recent 10067AE_AML_BUFFER_LIMIT issues. 10068 10069The "implicit return" support was rewritten to a new algorithm that 10070solves 10071the general case. Rather than attempt to determine when a method is about 10072to 10073exit, the result of every ASL operator is saved momentarily until the 10074very 10075next ASL operator is executed. Therefore, no matter how the method exits, 10076there will always be a saved implicit return value. This feature is only 10077enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 10078eliminate 10079AE_AML_NO_RETURN_VALUE errors when enabled. 10080 10081Implemented implicit conversion support for the predicate (operand) of 10082the 10083If, Else, and While operators. String and Buffer arguments are 10084automatically 10085converted to Integers. 10086 10087Changed the string-to-integer conversion behavior to match the new ACPI 10088errata: "If no integer object exists, a new integer is created. The ASCII 10089string is interpreted as a hexadecimal constant. Each string character is 10090interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 10091with the first character as the most significant digit, and ending with 10092the 10093first non-hexadecimal character or end-of-string." This means that the 10094first 10095non-hex character terminates the conversion and this is the code that was 10096changed. 10097 10098Fixed a problem where the ObjectType operator would fail (fault) when 10099used 10100on an Index of a Package which pointed to a null package element. The 10101operator now properly returns zero (Uninitialized) in this case. 10102 10103Fixed a problem where the While operator used excessive memory by not 10104properly popping the result stack during execution. There was no memory 10105leak 10106after execution, however. (Code provided by Valery Podrezov.) 10107 10108Fixed a problem where references to control methods within Package 10109objects 10110caused the method to be invoked, instead of producing a reference object 10111pointing to the method. 10112 10113Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 10114to 10115improve performance and reduce code size. (Code provided by Alexey 10116Starikovskiy.) 10117 10118Code and Data Size: Current and previous core subsystem library sizes are 10119shown below. These are the code and data sizes for the acpica.lib 10120produced 10121by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10122any ACPI driver or OSPM code. The debug version of the code includes the 10123debug output trace mechanism and has a much larger code and data size. 10124Note 10125that these values will vary depending on the efficiency of the compiler 10126and 10127the compiler options used during generation. 10128 10129 Previous Release: 10130 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10131 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10132 Current Release: 10133 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10134 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10135 10136 101372) iASL Compiler/Disassembler: 10138 10139Fixed a problem with the Return operator with no arguments. Since the AML 10140grammar for the byte encoding requires an operand for the Return opcode, 10141the 10142compiler now emits a Return(Zero) for this case. An ACPI specification 10143update has been written for this case. 10144 10145For tables other than the DSDT, namepath optimization is automatically 10146disabled. This is because SSDTs can be loaded anywhere in the namespace, 10147the 10148compiler has no knowledge of where, and thus cannot optimize namepaths. 10149 10150Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 10151inadvertently omitted from the ACPI specification, and will require an 10152update to the spec. 10153 10154The source file scan for ASCII characters is now optional (-a). This 10155change 10156was made because some vendors place non-ascii characters within comments. 10157However, the scan is simply a brute-force byte compare to ensure all 10158characters in the file are in the range 0x00 to 0x7F. 10159 10160Fixed a problem with the CondRefOf operator where the compiler was 10161inappropriately checking for the existence of the target. Since the point 10162of 10163the operator is to check for the existence of the target at run-time, the 10164compiler no longer checks for the target existence. 10165 10166Fixed a problem where errors generated from the internal AML interpreter 10167during constant folding were not handled properly, causing a fault. 10168 10169Fixed a problem with overly aggressive range checking for the Stall 10170operator. The valid range (max 255) is now only checked if the operand is 10171of 10172type Integer. All other operand types cannot be statically checked. 10173 10174Fixed a problem where control method references within the RefOf, 10175DeRefOf, 10176and ObjectType operators were not treated properly. They are now treated 10177as 10178actual references, not method invocations. 10179 10180Fixed and enhanced the "list namespace" option (-ln). This option was 10181broken 10182a number of releases ago. 10183 10184Improved error handling for the Field, IndexField, and BankField 10185operators. 10186The compiler now cleanly reports and recovers from errors in the field 10187component (FieldUnit) list. 10188 10189Fixed a disassembler problem where the optional ResourceDescriptor fields 10190TRS and TTP were not always handled correctly. 10191 10192Disassembler - Comments in output now use "//" instead of "/*" 10193 10194---------------------------------------- 1019528 February 2005. Summary of changes for version 20050228: 10196 101971) ACPI CA Core Subsystem: 10198 10199Fixed a problem where the result of an Index() operator (an object 10200reference) must increment the reference count on the target object for 10201the 10202life of the object reference. 10203 10204Implemented AML Interpreter and Debugger support for the new ACPI 3.0 10205Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 10206WordSpace 10207resource descriptors. 10208 10209Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 10210Space Descriptor" string, indicating interpreter support for the 10211descriptors 10212above. 10213 10214Implemented header support for the new ACPI 3.0 FADT flag bits. 10215 10216Implemented header support for the new ACPI 3.0 PCI Express bits for the 10217PM1 10218status/enable registers. 10219 10220Updated header support for the MADT processor local Apic struct and MADT 10221platform interrupt source struct for new ACPI 3.0 fields. 10222 10223Implemented header support for the SRAT and SLIT ACPI tables. 10224 10225Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 10226flag 10227at runtime. 10228 10229Code and Data Size: Current and previous core subsystem library sizes are 10230shown below. These are the code and data sizes for the acpica.lib 10231produced 10232by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10233any ACPI driver or OSPM code. The debug version of the code includes the 10234debug output trace mechanism and has a much larger code and data size. 10235Note 10236that these values will vary depending on the efficiency of the compiler 10237and 10238the compiler options used during generation. 10239 10240 Previous Release: 10241 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10242 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10243 Current Release: 10244 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10245 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10246 10247 102482) iASL Compiler/Disassembler: 10249 10250Fixed a problem with the internal 64-bit String-to-integer conversion 10251with 10252strings less than two characters long. 10253 10254Fixed a problem with constant folding where the result of the Index() 10255operator can not be considered a constant. This means that Index() cannot 10256be 10257a type3 opcode and this will require an update to the ACPI specification. 10258 10259Disassembler: Implemented support for the TTP, MTP, and TRS resource 10260descriptor fields. These fields were inadvertently ignored and not output 10261in 10262the disassembly of the resource descriptor. 10263 10264 10265 ---------------------------------------- 1026611 February 2005. Summary of changes for version 20050211: 10267 102681) ACPI CA Core Subsystem: 10269 10270Implemented ACPI 3.0 support for implicit conversion within the Match() 10271operator. MatchObjects can now be of type integer, buffer, or string 10272instead 10273of just type integer. Package elements are implicitly converted to the 10274type 10275of the MatchObject. This change aligns the behavior of Match() with the 10276behavior of the other logical operators (LLess(), etc.) It also requires 10277an 10278errata change to the ACPI specification as this support was intended for 10279ACPI 3.0, but was inadvertently omitted. 10280 10281Fixed a problem with the internal implicit "to buffer" conversion. 10282Strings 10283that are converted to buffers will cause buffer truncation if the string 10284is 10285smaller than the target buffer. Integers that are converted to buffers 10286will 10287not cause buffer truncation, only zero extension (both as per the ACPI 10288spec.) The problem was introduced when code was added to truncate the 10289buffer, but this should not be performed in all cases, only the string 10290case. 10291 10292Fixed a problem with the Buffer and Package operators where the 10293interpreter 10294would get confused if two such operators were used as operands to an ASL 10295operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 10296stack was not being popped after the execution of these operators, 10297resulting 10298in an AE_NO_RETURN_VALUE exception. 10299 10300Fixed a problem with constructs of the form Store(Index(...),...). The 10301reference object returned from Index was inadvertently resolved to an 10302actual 10303value. This problem was introduced in version 20050114 when the behavior 10304of 10305Store() was modified to restrict the object types that can be used as the 10306source operand (to match the ACPI specification.) 10307 10308Reduced excessive stack use within the AcpiGetObjectInfo procedure. 10309 10310Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 10311 10312Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 10313 10314Code and Data Size: Current and previous core subsystem library sizes are 10315shown below. These are the code and data sizes for the acpica.lib 10316produced 10317by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10318any ACPI driver or OSPM code. The debug version of the code includes the 10319debug output trace mechanism and has a much larger code and data size. 10320Note 10321that these values will vary depending on the efficiency of the compiler 10322and 10323the compiler options used during generation. 10324 10325 Previous Release: 10326 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10327 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10328 Current Release: 10329 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10330 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10331 10332 103332) iASL Compiler/Disassembler: 10334 10335Fixed a code generation problem in the constant folding optimization code 10336where incorrect code was generated if a constant was reduced to a buffer 10337object (i.e., a reduced type 5 opcode.) 10338 10339Fixed a typechecking problem for the ToBuffer operator. Caused by an 10340incorrect return type in the internal opcode information table. 10341 10342---------------------------------------- 1034325 January 2005. Summary of changes for version 20050125: 10344 103451) ACPI CA Core Subsystem: 10346 10347Fixed a recently introduced problem with the Global Lock where the 10348underlying semaphore was not created. This problem was introduced in 10349version 20050114, and caused an AE_AML_NO_OPERAND exception during an 10350Acquire() operation on _GL. 10351 10352The local object cache is now optional, and is disabled by default. Both 10353AcpiExec and the iASL compiler enable the cache because they run in user 10354mode and this enhances their performance. #define 10355ACPI_ENABLE_OBJECT_CACHE 10356to enable the local cache. 10357 10358Fixed an issue in the internal function AcpiUtEvaluateObject concerning 10359the 10360optional "implicit return" support where an error was returned if no 10361return 10362object was expected, but one was implicitly returned. AE_OK is now 10363returned 10364in this case and the implicitly returned object is deleted. 10365AcpiUtEvaluateObject is only occasionally used, and only to execute 10366reserved 10367methods such as _STA and _INI where the return type is known up front. 10368 10369Fixed a few issues with the internal convert-to-integer code. It now 10370returns 10371an error if an attempt is made to convert a null string, a string of only 10372blanks/tabs, or a zero-length buffer. This affects both implicit 10373conversion 10374and explicit conversion via the ToInteger() operator. 10375 10376The internal debug code in AcpiUtAcquireMutex has been commented out. It 10377is 10378not needed for normal operation and should increase the performance of 10379the 10380entire subsystem. The code remains in case it is needed for debug 10381purposes 10382again. 10383 10384The AcpiExec source and makefile are included in the Unix/Linux package 10385for 10386the first time. 10387 10388Code and Data Size: Current and previous core subsystem library sizes are 10389shown below. These are the code and data sizes for the acpica.lib 10390produced 10391by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10392any ACPI driver or OSPM code. The debug version of the code includes the 10393debug output trace mechanism and has a much larger code and data size. 10394Note 10395that these values will vary depending on the efficiency of the compiler 10396and 10397the compiler options used during generation. 10398 10399 Previous Release: 10400 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10401 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10402 Current Release: 10403 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10404 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10405 104062) iASL Compiler/Disassembler: 10407 10408Switch/Case support: A warning is now issued if the type of the Switch 10409value 10410cannot be determined at compile time. For example, Switch(Arg0) will 10411generate the warning, and the type is assumed to be an integer. As per 10412the 10413ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 10414the 10415warning. 10416 10417Switch/Case support: Implemented support for buffer and string objects as 10418the switch value. This is an ACPI 3.0 feature, now that LEqual supports 10419buffers and strings. 10420 10421Switch/Case support: The emitted code for the LEqual() comparisons now 10422uses 10423the switch value as the first operand, not the second. The case value is 10424now 10425the second operand, and this allows the case value to be implicitly 10426converted to the type of the switch value, not the other way around. 10427 10428Switch/Case support: Temporary variables are now emitted immediately 10429within 10430the control method, not at the global level. This means that there are 10431now 1043236 temps available per-method, not 36 temps per-module as was the case 10433with 10434the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 10435 10436---------------------------------------- 1043714 January 2005. Summary of changes for version 20050114: 10438 10439Added 2005 copyright to all module headers. This affects every module in 10440the core subsystem, iASL compiler, and the utilities. 10441 104421) ACPI CA Core Subsystem: 10443 10444Fixed an issue with the String-to-Buffer conversion code where the string 10445null terminator was not included in the buffer after conversion, but 10446there 10447is existing ASL that assumes the string null terminator is included. This 10448is 10449the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 10450introduced in the previous version when the code was updated to correctly 10451set the converted buffer size as per the ACPI specification. The ACPI 10452spec 10453is ambiguous and will be updated to specify that the null terminator must 10454be 10455included in the converted buffer. This also affects the ToBuffer() ASL 10456operator. 10457 10458Fixed a problem with the Mid() ASL/AML operator where it did not work 10459correctly on Buffer objects. Newly created sub-buffers were not being 10460marked 10461as initialized. 10462 10463 10464Fixed a problem in AcpiTbFindTable where incorrect string compares were 10465performed on the OemId and OemTableId table header fields. These fields 10466are 10467not null terminated, so strncmp is now used instead of strcmp. 10468 10469Implemented a restriction on the Store() ASL/AML operator to align the 10470behavior with the ACPI specification. Previously, any object could be 10471used 10472as the source operand. Now, the only objects that may be used are 10473Integers, 10474Buffers, Strings, Packages, Object References, and DDB Handles. If 10475necessary, the original behavior can be restored by enabling the 10476EnableInterpreterSlack flag. 10477 10478Enhanced the optional "implicit return" support to allow an implicit 10479return 10480value from methods that are invoked externally via the AcpiEvaluateObject 10481interface. This enables implicit returns from the _STA and _INI methods, 10482for example. 10483 10484Changed the Revision() ASL/AML operator to return the current version of 10485the 10486AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 10487returned 10488the supported ACPI version (This is the function of the _REV method). 10489 10490Updated the _REV predefined method to return the currently supported 10491version 10492of ACPI, now 3. 10493 10494Implemented batch mode option for the AcpiExec utility (-b). 10495 10496Code and Data Size: Current and previous core subsystem library sizes are 10497shown below. These are the code and data sizes for the acpica.lib 10498produced 10499by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10500any ACPI driver or OSPM code. The debug version of the code includes the 10501debug output trace mechanism and has a much larger code and data size. 10502Note 10503that these values will vary depending on the efficiency of the compiler 10504and 10505the compiler options used during generation. 10506 10507 Previous Release: 10508 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10509 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10510 Current Release: 10511 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10512 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10513 10514---------------------------------------- 1051510 December 2004. Summary of changes for version 20041210: 10516 10517ACPI 3.0 support is nearing completion in both the iASL compiler and the 10518ACPI CA core subsystem. 10519 105201) ACPI CA Core Subsystem: 10521 10522Fixed a problem in the ToDecimalString operator where the resulting 10523string 10524length was incorrectly calculated. The length is now calculated exactly, 10525eliminating incorrect AE_STRING_LIMIT exceptions. 10526 10527Fixed a problem in the ToHexString operator to allow a maximum 200 10528character 10529string to be produced. 10530 10531Fixed a problem in the internal string-to-buffer and buffer-to-buffer 10532copy 10533routine where the length of the resulting buffer was not truncated to the 10534new size (if the target buffer already existed). 10535 10536Code and Data Size: Current and previous core subsystem library sizes are 10537shown below. These are the code and data sizes for the acpica.lib 10538produced 10539by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10540any ACPI driver or OSPM code. The debug version of the code includes the 10541debug output trace mechanism and has a much larger code and data size. 10542Note 10543that these values will vary depending on the efficiency of the compiler 10544and 10545the compiler options used during generation. 10546 10547 Previous Release: 10548 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10549 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10550 Current Release: 10551 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10552 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10553 10554 105552) iASL Compiler/Disassembler: 10556 10557Implemented the new ACPI 3.0 resource template macros - DWordSpace, 10558ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 10559Includes support in the disassembler. 10560 10561Implemented support for the new (ACPI 3.0) parameter to the Register 10562macro, 10563AccessSize. 10564 10565Fixed a problem where the _HE resource name for the Interrupt macro was 10566referencing bit 0 instead of bit 1. 10567 10568Implemented check for maximum 255 interrupts in the Interrupt macro. 10569 10570Fixed a problem with the predefined resource descriptor names where 10571incorrect AML code was generated if the offset within the resource buffer 10572was 0 or 1. The optimizer shortened the AML code to a single byte opcode 10573but did not update the surrounding package lengths. 10574 10575Changes to the Dma macro: All channels within the channel list must be 10576in 10577the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 10578optional (default is BusMaster). 10579 10580Implemented check for maximum 7 data bytes for the VendorShort macro. 10581 10582The ReadWrite parameter is now optional for the Memory32 and similar 10583macros. 10584 10585---------------------------------------- 1058603 December 2004. Summary of changes for version 20041203: 10587 105881) ACPI CA Core Subsystem: 10589 10590The low-level field insertion/extraction code (exfldio) has been 10591completely 10592rewritten to eliminate unnecessary complexity, bugs, and boundary 10593conditions. 10594 10595Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 10596ToDecimalString 10597operators where the input operand could be inadvertently deleted if no 10598conversion was necessary (e.g., if the input to ToInteger was an Integer 10599object.) 10600 10601Fixed a problem with the ToDecimalString and ToHexString where an 10602incorrect 10603exception code was returned if the resulting string would be > 200 chars. 10604AE_STRING_LIMIT is now returned. 10605 10606Fixed a problem with the Concatenate operator where AE_OK was always 10607returned, even if the operation failed. 10608 10609Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 10610semaphores to be allocated. 10611 10612Code and Data Size: Current and previous core subsystem library sizes are 10613shown below. These are the code and data sizes for the acpica.lib 10614produced 10615by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10616any ACPI driver or OSPM code. The debug version of the code includes the 10617debug output trace mechanism and has a much larger code and data size. 10618Note 10619that these values will vary depending on the efficiency of the compiler 10620and 10621the compiler options used during generation. 10622 10623 Previous Release: 10624 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10625 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10626 Current Release: 10627 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10628 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10629 10630 106312) iASL Compiler/Disassembler: 10632 10633Fixed typechecking for the ObjectType and SizeOf operators. Problem was 10634recently introduced in 20041119. 10635 10636Fixed a problem with the ToUUID macro where the upper nybble of each 10637buffer 10638byte was inadvertently set to zero. 10639 10640---------------------------------------- 1064119 November 2004. Summary of changes for version 20041119: 10642 106431) ACPI CA Core Subsystem: 10644 10645Fixed a problem in the internal ConvertToInteger routine where new 10646integers 10647were not truncated to 32 bits for 32-bit ACPI tables. This routine 10648converts 10649buffers and strings to integers. 10650 10651Implemented support to store a value to an Index() on a String object. 10652This 10653is an ACPI 2.0 feature that had not yet been implemented. 10654 10655Implemented new behavior for storing objects to individual package 10656elements 10657(via the Index() operator). The previous behavior was to invoke the 10658implicit 10659conversion rules if an object was already present at the index. The new 10660behavior is to simply delete any existing object and directly store the 10661new 10662object. Although the ACPI specification seems unclear on this subject, 10663other 10664ACPI implementations behave in this manner. (This is the root of the 10665AE_BAD_HEX_CONSTANT issue.) 10666 10667Modified the RSDP memory scan mechanism to support the extended checksum 10668for 10669ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 10670RSDP signature is found with a valid checksum. 10671 10672Code and Data Size: Current and previous core subsystem library sizes are 10673shown below. These are the code and data sizes for the acpica.lib 10674produced 10675by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10676any ACPI driver or OSPM code. The debug version of the code includes the 10677debug output trace mechanism and has a much larger code and data size. 10678Note 10679that these values will vary depending on the efficiency of the compiler 10680and 10681the compiler options used during generation. 10682 10683 Previous Release: 10684 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10685 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10686 Current Release: 10687 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10688 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10689 10690 106912) iASL Compiler/Disassembler: 10692 10693Fixed a missing semicolon in the aslcompiler.y file. 10694 10695---------------------------------------- 1069605 November 2004. Summary of changes for version 20041105: 10697 106981) ACPI CA Core Subsystem: 10699 10700Implemented support for FADT revision 2. This was an interim table 10701(between 10702ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 10703 10704Implemented optional support to allow uninitialized LocalX and ArgX 10705variables in a control method. The variables are initialized to an 10706Integer 10707object with a value of zero. This support is enabled by setting the 10708AcpiGbl_EnableInterpreterSlack flag to TRUE. 10709 10710Implemented support for Integer objects for the SizeOf operator. Either 107114 10712or 8 is returned, depending on the current integer size (32-bit or 64- 10713bit, 10714depending on the parent table revision). 10715 10716Fixed a problem in the implementation of the SizeOf and ObjectType 10717operators 10718where the operand was resolved to a value too early, causing incorrect 10719return values for some objects. 10720 10721Fixed some possible memory leaks during exceptional conditions. 10722 10723Code and Data Size: Current and previous core subsystem library sizes are 10724shown below. These are the code and data sizes for the acpica.lib 10725produced 10726by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10727any ACPI driver or OSPM code. The debug version of the code includes the 10728debug output trace mechanism and has a much larger code and data size. 10729Note 10730that these values will vary depending on the efficiency of the compiler 10731and 10732the compiler options used during generation. 10733 10734 Previous Release: 10735 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10736 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10737 Current Release: 10738 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10739 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10740 10741 107422) iASL Compiler/Disassembler: 10743 10744Implemented support for all ACPI 3.0 reserved names and methods. 10745 10746Implemented all ACPI 3.0 grammar elements in the front-end, including 10747support for semicolons. 10748 10749Implemented the ACPI 3.0 Function() and ToUUID() macros 10750 10751Fixed a problem in the disassembler where a Scope() operator would not be 10752emitted properly if the target of the scope was in another table. 10753 10754---------------------------------------- 1075515 October 2004. Summary of changes for version 20041015: 10756 10757Note: ACPI CA is currently undergoing an in-depth and complete formal 10758evaluation to test/verify the following areas. Other suggestions are 10759welcome. This will result in an increase in the frequency of releases and 10760the number of bug fixes in the next few months. 10761 - Functional tests for all ASL/AML operators 10762 - All implicit/explicit type conversions 10763 - Bit fields and operation regions 10764 - 64-bit math support and 32-bit-only "truncated" math support 10765 - Exceptional conditions, both compiler and interpreter 10766 - Dynamic object deletion and memory leaks 10767 - ACPI 3.0 support when implemented 10768 - External interfaces to the ACPI subsystem 10769 10770 107711) ACPI CA Core Subsystem: 10772 10773Fixed two alignment issues on 64-bit platforms - within debug statements 10774in 10775AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 10776Address 10777field within the non-aligned ACPI generic address structure. 10778 10779Fixed a problem in the Increment and Decrement operators where incorrect 10780operand resolution could result in the inadvertent modification of the 10781original integer when the integer is passed into another method as an 10782argument and the arg is then incremented/decremented. 10783 10784Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 10785bit 10786BCD number were truncated during conversion. 10787 10788Fixed a problem in the ToDecimal operator where the length of the 10789resulting 10790string could be set incorrectly too long if the input operand was a 10791Buffer 10792object. 10793 10794Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 10795(0) 10796within a buffer would prematurely terminate a compare between buffer 10797objects. 10798 10799Added a check for string overflow (>200 characters as per the ACPI 10800specification) during the Concatenate operator with two string operands. 10801 10802Code and Data Size: Current and previous core subsystem library sizes are 10803shown below. These are the code and data sizes for the acpica.lib 10804produced 10805by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10806any ACPI driver or OSPM code. The debug version of the code includes the 10807debug output trace mechanism and has a much larger code and data size. 10808Note 10809that these values will vary depending on the efficiency of the compiler 10810and 10811the compiler options used during generation. 10812 10813 Previous Release: 10814 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10815 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10816 Current Release: 10817 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10818 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10819 10820 10821 108222) iASL Compiler/Disassembler: 10823 10824Allow the use of the ObjectType operator on uninitialized Locals and Args 10825(returns 0 as per the ACPI specification). 10826 10827Fixed a problem where the compiler would fault if there was a syntax 10828error 10829in the FieldName of all of the various CreateXXXField operators. 10830 10831Disallow the use of lower case letters within the EISAID macro, as per 10832the 10833ACPI specification. All EISAID strings must be of the form "UUUNNNN" 10834Where 10835U is an uppercase letter and N is a hex digit. 10836 10837 10838---------------------------------------- 1083906 October 2004. Summary of changes for version 20041006: 10840 108411) ACPI CA Core Subsystem: 10842 10843Implemented support for the ACPI 3.0 Timer operator. This ASL function 10844implements a 64-bit timer with 100 nanosecond granularity. 10845 10846Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 10847implement the ACPI 3.0 Timer operator. This allows the host OS to 10848implement 10849the timer with the best clock available. Also, it keeps the core 10850subsystem 10851out of the clock handling business, since the host OS (usually) performs 10852this function. 10853 10854Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 10855functions use a 64-bit address which is part of the packed ACPI Generic 10856Address Structure. Since the structure is non-aligned, the alignment 10857macros 10858are now used to extract the address to a local variable before use. 10859 10860Fixed a problem where the ToInteger operator assumed all input strings 10861were 10862hexadecimal. The operator now handles both decimal strings and hex 10863strings 10864(prefixed with "0x"). 10865 10866Fixed a problem where the string length in the string object created as a 10867result of the internal ConvertToString procedure could be incorrect. This 10868potentially affected all implicit conversions and also the 10869ToDecimalString 10870and ToHexString operators. 10871 10872Fixed two problems in the ToString operator. If the length parameter was 10873zero, an incorrect string object was created and the value of the input 10874length parameter was inadvertently changed from zero to Ones. 10875 10876Fixed a problem where the optional ResourceSource string in the 10877ExtendedIRQ 10878resource macro was ignored. 10879 10880Simplified the interfaces to the internal division functions, reducing 10881code 10882size and complexity. 10883 10884Code and Data Size: Current and previous core subsystem library sizes are 10885shown below. These are the code and data sizes for the acpica.lib 10886produced 10887by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10888any ACPI driver or OSPM code. The debug version of the code includes the 10889debug output trace mechanism and has a much larger code and data size. 10890Note 10891that these values will vary depending on the efficiency of the compiler 10892and 10893the compiler options used during generation. 10894 10895 Previous Release: 10896 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10897 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10898 Current Release: 10899 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10900 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10901 10902 109032) iASL Compiler/Disassembler: 10904 10905Implemented support for the ACPI 3.0 Timer operator. 10906 10907Fixed a problem where the Default() operator was inadvertently ignored in 10908a 10909Switch/Case block. This was a problem in the translation of the Switch 10910statement to If...Else pairs. 10911 10912Added support to allow a standalone Return operator, with no parentheses 10913(or 10914operands). 10915 10916Fixed a problem with code generation for the ElseIf operator where the 10917translated Else...If parse tree was improperly constructed leading to the 10918loss of some code. 10919 10920---------------------------------------- 1092122 September 2004. Summary of changes for version 20040922: 10922 109231) ACPI CA Core Subsystem: 10924 10925Fixed a problem with the implementation of the LNot() operator where 10926"Ones" 10927was not returned for the TRUE case. Changed the code to return Ones 10928instead 10929of (!Arg) which was usually 1. This change affects iASL constant folding 10930for 10931this operator also. 10932 10933Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 10934not 10935initialized properly -- Now zero the entire buffer in this case where the 10936buffer already exists. 10937 10938Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 10939Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 10940related code considerably. This will require changes/updates to all OS 10941interface layers (OSLs.) 10942 10943Implemented a new external interface, AcpiInstallExceptionHandler, to 10944allow 10945a system exception handler to be installed. This handler is invoked upon 10946any 10947run-time exception that occurs during control method execution. 10948 10949Added support for the DSDT in AcpiTbFindTable. This allows the 10950DataTableRegion() operator to access the local copy of the DSDT. 10951 10952Code and Data Size: Current and previous core subsystem library sizes are 10953shown below. These are the code and data sizes for the acpica.lib 10954produced 10955by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10956any ACPI driver or OSPM code. The debug version of the code includes the 10957debug output trace mechanism and has a much larger code and data size. 10958Note 10959that these values will vary depending on the efficiency of the compiler 10960and 10961the compiler options used during generation. 10962 10963 Previous Release: 10964 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10965 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10966 Current Release: 10967 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10968 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10969 10970 109712) iASL Compiler/Disassembler: 10972 10973Fixed a problem with constant folding and the LNot operator. LNot was 10974returning 1 in the TRUE case, not Ones as per the ACPI specification. 10975This 10976could result in the generation of an incorrect folded/reduced constant. 10977 10978End-Of-File is now allowed within a "//"-style comment. A parse error no 10979longer occurs if such a comment is at the very end of the input ASL 10980source 10981file. 10982 10983Implemented the "-r" option to override the Revision in the table header. 10984The initial use of this option will be to simplify the evaluation of the 10985AML 10986interpreter by allowing a single ASL source module to be compiled for 10987either 1098832-bit or 64-bit integers. 10989 10990 10991---------------------------------------- 1099227 August 2004. Summary of changes for version 20040827: 10993 109941) ACPI CA Core Subsystem: 10995 10996- Implemented support for implicit object conversion in the non-numeric 10997logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 10998and 10999LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 11000the second operand is implicitly converted on the fly to match the type 11001of 11002the first operand. For example: 11003 11004 LEqual (Source1, Source2) 11005 11006Source1 and Source2 must each evaluate to an integer, a string, or a 11007buffer. 11008The data type of Source1 dictates the required type of Source2. Source2 11009is 11010implicitly converted if necessary to match the type of Source1. 11011 11012- Updated and corrected the behavior of the string conversion support. 11013The 11014rules concerning conversion of buffers to strings (according to the ACPI 11015specification) are as follows: 11016 11017ToDecimalString - explicit byte-wise conversion of buffer to string of 11018decimal values (0-255) separated by commas. ToHexString - explicit byte- 11019wise 11020conversion of buffer to string of hex values (0-FF) separated by commas. 11021ToString - explicit byte-wise conversion of buffer to string. Byte-by- 11022byte 11023copy with no transform except NULL terminated. Any other implicit buffer- 11024to- 11025string conversion - byte-wise conversion of buffer to string of hex 11026values 11027(0-FF) separated by spaces. 11028 11029- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 11030 11031- Fixed a problem in AcpiNsGetPathnameLength where the returned length 11032was 11033one byte too short in the case of a node in the root scope. This could 11034cause a fault during debug output. 11035 11036- Code and Data Size: Current and previous core subsystem library sizes 11037are 11038shown below. These are the code and data sizes for the acpica.lib 11039produced 11040by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11041any ACPI driver or OSPM code. The debug version of the code includes the 11042debug output trace mechanism and has a much larger code and data size. 11043Note 11044that these values will vary depending on the efficiency of the compiler 11045and 11046the compiler options used during generation. 11047 11048 Previous Release: 11049 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11050 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11051 Current Release: 11052 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11053 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11054 11055 110562) iASL Compiler/Disassembler: 11057 11058- Fixed a Linux generation error. 11059 11060 11061---------------------------------------- 1106216 August 2004. Summary of changes for version 20040816: 11063 110641) ACPI CA Core Subsystem: 11065 11066Designed and implemented support within the AML interpreter for the so- 11067called "implicit return". This support returns the result of the last 11068ASL 11069operation within a control method, in the absence of an explicit Return() 11070operator. A few machines depend on this behavior, even though it is not 11071explicitly supported by the ASL language. It is optional support that 11072can 11073be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 11074 11075Removed support for the PCI_Config address space from the internal low 11076level 11077hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 11078support was not used internally, and would not work correctly anyway 11079because 11080the PCI bus number and segment number were not supported. There are 11081separate interfaces for PCI configuration space access because of the 11082unique 11083interface. 11084 11085Code and Data Size: Current and previous core subsystem library sizes are 11086shown below. These are the code and data sizes for the acpica.lib 11087produced 11088by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11089any ACPI driver or OSPM code. The debug version of the code includes the 11090debug output trace mechanism and has a much larger code and data size. 11091Note 11092that these values will vary depending on the efficiency of the compiler 11093and 11094the compiler options used during generation. 11095 11096 Previous Release: 11097 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11098 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11099 Current Release: 11100 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11101 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11102 11103 111042) iASL Compiler/Disassembler: 11105 11106Fixed a problem where constants in ASL expressions at the root level (not 11107within a control method) could be inadvertently truncated during code 11108generation. This problem was introduced in the 20040715 release. 11109 11110 11111---------------------------------------- 1111215 July 2004. Summary of changes for version 20040715: 11113 111141) ACPI CA Core Subsystem: 11115 11116Restructured the internal HW GPE interfaces to pass/track the current 11117state 11118of interrupts (enabled/disabled) in order to avoid possible deadlock and 11119increase flexibility of the interfaces. 11120 11121Implemented a "lexicographical compare" for String and Buffer objects 11122within 11123the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 11124- 11125as per further clarification to the ACPI specification. Behavior is 11126similar 11127to C library "strcmp". 11128 11129Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 11130external function. In the 32-bit non-debug case, the stack use has been 11131reduced from 168 bytes to 32 bytes. 11132 11133Deployed a new run-time configuration flag, 11134AcpiGbl_EnableInterpreterSlack, 11135whose purpose is to allow the AML interpreter to forgive certain bad AML 11136constructs. Default setting is FALSE. 11137 11138Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 11139IO 11140support code. If enabled, it allows field access to go beyond the end of 11141a 11142region definition if the field is within the region length rounded up to 11143the 11144next access width boundary (a common coding error.) 11145 11146Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 11147ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 11148these 11149symbols are lowercased by the latest version of the AcpiSrc tool. 11150 11151The prototypes for the PCI interfaces in acpiosxf.h have been updated to 11152rename "Register" to simply "Reg" to prevent certain compilers from 11153complaining. 11154 11155Code and Data Size: Current and previous core subsystem library sizes are 11156shown below. These are the code and data sizes for the acpica.lib 11157produced 11158by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11159any ACPI driver or OSPM code. The debug version of the code includes the 11160debug output trace mechanism and has a much larger code and data size. 11161Note 11162that these values will vary depending on the efficiency of the compiler 11163and 11164the compiler options used during generation. 11165 11166 Previous Release: 11167 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11168 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11169 Current Release: 11170 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11171 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11172 11173 111742) iASL Compiler/Disassembler: 11175 11176Implemented full support for Package objects within the Case() operator. 11177Note: The Break() operator is currently not supported within Case blocks 11178(TermLists) as there is some question about backward compatibility with 11179ACPI 111801.0 interpreters. 11181 11182 11183Fixed a problem where complex terms were not supported properly within 11184the 11185Switch() operator. 11186 11187Eliminated extraneous warning for compiler-emitted reserved names of the 11188form "_T_x". (Used in Switch/Case operators.) 11189 11190Eliminated optimization messages for "_T_x" objects and small constants 11191within the DefinitionBlock operator. 11192 11193 11194---------------------------------------- 1119515 June 2004. Summary of changes for version 20040615: 11196 111971) ACPI CA Core Subsystem: 11198 11199Implemented support for Buffer and String objects (as per ACPI 2.0) for 11200the 11201following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11202LLessEqual. 11203 11204All directory names in the entire source package are lower case, as they 11205were in earlier releases. 11206 11207Implemented "Disassemble" command in the AML debugger that will 11208disassemble 11209a single control method. 11210 11211Code and Data Size: Current and previous core subsystem library sizes are 11212shown below. These are the code and data sizes for the acpica.lib 11213produced 11214by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11215any ACPI driver or OSPM code. The debug version of the code includes the 11216debug output trace mechanism and has a much larger code and data size. 11217Note 11218that these values will vary depending on the efficiency of the compiler 11219and 11220the compiler options used during generation. 11221 11222 Previous Release: 11223 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11224 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11225 11226 Current Release: 11227 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11228 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11229 11230 112312) iASL Compiler/Disassembler: 11232 11233Implemented support for Buffer and String objects (as per ACPI 2.0) for 11234the 11235following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11236LLessEqual. 11237 11238All directory names in the entire source package are lower case, as they 11239were in earlier releases. 11240 11241Fixed a fault when using the -g or -d<nofilename> options if the FADT was 11242not found. 11243 11244Fixed an issue with the Windows version of the compiler where later 11245versions 11246of Windows place the FADT in the registry under the name "FADT" and not 11247"FACP" as earlier versions did. This applies when using the -g or - 11248d<nofilename> options. The compiler now looks for both strings as 11249necessary. 11250 11251Fixed a problem with compiler namepath optimization where a namepath 11252within 11253the Scope() operator could not be optimized if the namepath was a subpath 11254of 11255the current scope path. 11256 11257---------------------------------------- 1125827 May 2004. Summary of changes for version 20040527: 11259 112601) ACPI CA Core Subsystem: 11261 11262Completed a new design and implementation for EBDA (Extended BIOS Data 11263Area) 11264support in the RSDP scan code. The original code improperly scanned for 11265the 11266EBDA by simply scanning from memory location 0 to 0x400. The correct 11267method 11268is to first obtain the EBDA pointer from within the BIOS data area, then 11269scan 1K of memory starting at the EBDA pointer. There appear to be few 11270if 11271any machines that place the RSDP in the EBDA, however. 11272 11273Integrated a fix for a possible fault during evaluation of BufferField 11274arguments. Obsolete code that was causing the problem was removed. 11275 11276Found and fixed a problem in the Field Support Code where data could be 11277corrupted on a bit field read that starts on an aligned boundary but does 11278not end on an aligned boundary. Merged the read/write "datum length" 11279calculation code into a common procedure. 11280 11281Rolled in a couple of changes to the FreeBSD-specific header. 11282 11283 11284Code and Data Size: Current and previous core subsystem library sizes are 11285shown below. These are the code and data sizes for the acpica.lib 11286produced 11287by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11288any ACPI driver or OSPM code. The debug version of the code includes the 11289debug output trace mechanism and has a much larger code and data size. 11290Note 11291that these values will vary depending on the efficiency of the compiler 11292and 11293the compiler options used during generation. 11294 11295 Previous Release: 11296 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11297 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11298 Current Release: 11299 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11300 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11301 11302 113032) iASL Compiler/Disassembler: 11304 11305Fixed a generation warning produced by some overly-verbose compilers for 11306a 1130764-bit constant. 11308 11309---------------------------------------- 1131014 May 2004. Summary of changes for version 20040514: 11311 113121) ACPI CA Core Subsystem: 11313 11314Fixed a problem where hardware GPE enable bits sometimes not set properly 11315during and after GPE method execution. Result of 04/27 changes. 11316 11317Removed extra "clear all GPEs" when sleeping/waking. 11318 11319Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 11320AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 11321to 11322the new AcpiEv* calls as appropriate. 11323 11324ACPI_OS_NAME was removed from the OS-specific headers. The default name 11325is 11326now "Microsoft Windows NT" for maximum compatibility. However this can 11327be 11328changed by modifying the acconfig.h file. 11329 11330Allow a single invocation of AcpiInstallNotifyHandler for a handler that 11331traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 11332 11333Run _INI methods on ThermalZone objects. This is against the ACPI 11334specification, but there is apparently ASL code in the field that has 11335these 11336_INI methods, and apparently "other" AML interpreters execute them. 11337 11338Performed a full 16/32/64 bit lint that resulted in some small changes. 11339 11340Added a sleep simulation command to the AML debugger to test sleep code. 11341 11342Code and Data Size: Current and previous core subsystem library sizes are 11343shown below. These are the code and data sizes for the acpica.lib 11344produced 11345by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11346any ACPI driver or OSPM code. The debug version of the code includes the 11347debug output trace mechanism and has a much larger code and data size. 11348Note 11349that these values will vary depending on the efficiency of the compiler 11350and 11351the compiler options used during generation. 11352 11353 Previous Release: 11354 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11355 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11356 Current Release: 11357 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11358 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11359 11360---------------------------------------- 1136127 April 2004. Summary of changes for version 20040427: 11362 113631) ACPI CA Core Subsystem: 11364 11365Completed a major overhaul of the GPE handling within ACPI CA. There are 11366now three types of GPEs: wake-only, runtime-only, and combination 11367wake/run. 11368The only GPEs allowed to be combination wake/run are for button-style 11369devices such as a control-method power button, control-method sleep 11370button, 11371or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 11372not 11373referenced by any _PRW methods are marked for "runtime" and hardware 11374enabled. Any GPE that is referenced by a _PRW method is marked for 11375"wake" 11376(and disabled at runtime). However, at sleep time, only those GPEs that 11377have been specifically enabled for wake via the AcpiEnableGpe interface 11378will 11379actually be hardware enabled. 11380 11381A new external interface has been added, AcpiSetGpeType(), that is meant 11382to 11383be used by device drivers to force a GPE to a particular type. It will 11384be 11385especially useful for the drivers for the button devices mentioned above. 11386 11387Completed restructuring of the ACPI CA initialization sequence so that 11388default operation region handlers are installed before GPEs are 11389initialized 11390and the _PRW methods are executed. This will prevent errors when the 11391_PRW 11392methods attempt to access system memory or I/O space. 11393 11394GPE enable/disable no longer reads the GPE enable register. We now keep 11395the 11396enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 11397thus no longer depend on the hardware to maintain these bits. 11398 11399Always clear the wake status and fixed/GPE status bits before sleep, even 11400for state S5. 11401 11402Improved the AML debugger output for displaying the GPE blocks and their 11403current status. 11404 11405Added new strings for the _OSI method, of the form "Windows 2001 SPx" 11406where 11407x = 0,1,2,3,4. 11408 11409Fixed a problem where the physical address was incorrectly calculated 11410when 11411the Load() operator was used to directly load from an Operation Region 11412(vs. 11413loading from a Field object.) Also added check for minimum table length 11414for 11415this case. 11416 11417Fix for multiple mutex acquisition. Restore original thread SyncLevel on 11418mutex release. 11419 11420Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 11421consistency with the other fields returned. 11422 11423Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 11424structure for each GPE in the system, so the size of this structure is 11425important. 11426 11427CPU stack requirement reduction: Cleaned up the method execution and 11428object 11429evaluation paths so that now a parameter structure is passed, instead of 11430copying the various method parameters over and over again. 11431 11432In evregion.c: Correctly exit and reenter the interpreter region if and 11433only if dispatching an operation region request to a user-installed 11434handler. 11435Do not exit/reenter when dispatching to a default handler (e.g., default 11436system memory or I/O handlers) 11437 11438 11439Notes for updating drivers for the new GPE support. The following 11440changes 11441must be made to ACPI-related device drivers that are attached to one or 11442more 11443GPEs: (This information will be added to the ACPI CA Programmer 11444Reference.) 11445 114461) AcpiInstallGpeHandler no longer automatically enables the GPE, you 11447must 11448explicitly call AcpiEnableGpe. 114492) There is a new interface called AcpiSetGpeType. This should be called 11450before enabling the GPE. Also, this interface will automatically disable 11451the GPE if it is currently enabled. 114523) AcpiEnableGpe no longer supports a GPE type flag. 11453 11454Specific drivers that must be changed: 114551) EC driver: 11456 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 11457AeGpeHandler, NULL); 11458 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 11459 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 11460 114612) Button Drivers (Power, Lid, Sleep): 11462Run _PRW method under parent device 11463If _PRW exists: /* This is a control-method button */ 11464 Extract GPE number and possibly GpeDevice 11465 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 11466 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 11467 11468For all other devices that have _PRWs, we automatically set the GPE type 11469to 11470ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 11471This 11472must be done on a selective basis, usually requiring some kind of user 11473app 11474to allow the user to pick the wake devices. 11475 11476 11477Code and Data Size: Current and previous core subsystem library sizes are 11478shown below. These are the code and data sizes for the acpica.lib 11479produced 11480by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11481any ACPI driver or OSPM code. The debug version of the code includes the 11482debug output trace mechanism and has a much larger code and data size. 11483Note 11484that these values will vary depending on the efficiency of the compiler 11485and 11486the compiler options used during generation. 11487 11488 Previous Release: 11489 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11490 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11491 Current Release: 11492 11493 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11494 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11495 11496 11497 11498---------------------------------------- 1149902 April 2004. Summary of changes for version 20040402: 11500 115011) ACPI CA Core Subsystem: 11502 11503Fixed an interpreter problem where an indirect store through an ArgX 11504parameter was incorrectly applying the "implicit conversion rules" during 11505the store. From the ACPI specification: "If the target is a method local 11506or 11507argument (LocalX or ArgX), no conversion is performed and the result is 11508stored directly to the target". The new behavior is to disable implicit 11509conversion during ALL stores to an ArgX. 11510 11511Changed the behavior of the _PRW method scan to ignore any and all errors 11512returned by a given _PRW. This prevents the scan from aborting from the 11513failure of any single _PRW. 11514 11515Moved the runtime configuration parameters from the global init procedure 11516to 11517static variables in acglobal.h. This will allow the host to override the 11518default values easily. 11519 11520Code and Data Size: Current and previous core subsystem library sizes are 11521shown below. These are the code and data sizes for the acpica.lib 11522produced 11523by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11524any ACPI driver or OSPM code. The debug version of the code includes the 11525debug output trace mechanism and has a much larger code and data size. 11526Note 11527that these values will vary depending on the efficiency of the compiler 11528and 11529the compiler options used during generation. 11530 11531 Previous Release: 11532 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11533 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11534 Current Release: 11535 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11536 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11537 11538 115392) iASL Compiler/Disassembler: 11540 11541iASL now fully disassembles SSDTs. However, External() statements are 11542not 11543generated automatically for unresolved symbols at this time. This is a 11544planned feature for future implementation. 11545 11546Fixed a scoping problem in the disassembler that occurs when the type of 11547the 11548target of a Scope() operator is overridden. This problem caused an 11549incorrectly nested internal namespace to be constructed. 11550 11551Any warnings or errors that are emitted during disassembly are now 11552commented 11553out automatically so that the resulting file can be recompiled without 11554any 11555hand editing. 11556 11557---------------------------------------- 1155826 March 2004. Summary of changes for version 20040326: 11559 115601) ACPI CA Core Subsystem: 11561 11562Implemented support for "wake" GPEs via interaction between GPEs and the 11563_PRW methods. Every GPE that is pointed to by one or more _PRWs is 11564identified as a WAKE GPE and by default will no longer be enabled at 11565runtime. Previously, we were blindly enabling all GPEs with a 11566corresponding 11567_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 11568We 11569believe this has been the cause of thousands of "spurious" GPEs on some 11570systems. 11571 11572This new GPE behavior is can be reverted to the original behavior (enable 11573ALL GPEs at runtime) via a runtime flag. 11574 11575Fixed a problem where aliased control methods could not access objects 11576properly. The proper scope within the namespace was not initialized 11577(transferred to the target of the aliased method) before executing the 11578target method. 11579 11580Fixed a potential race condition on internal object deletion on the 11581return 11582object in AcpiEvaluateObject. 11583 11584Integrated a fix for resource descriptors where both _MEM and _MTP were 11585being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 11586wide, 0x0F instead of 0x03.) 11587 11588Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 11589preventing 11590a 11591fault in some cases. 11592 11593Updated Notify() values for debug statements in evmisc.c 11594 11595Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 11596 11597Code and Data Size: Current and previous core subsystem library sizes are 11598shown below. These are the code and data sizes for the acpica.lib 11599produced 11600by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11601any ACPI driver or OSPM code. The debug version of the code includes the 11602debug output trace mechanism and has a much larger code and data size. 11603Note 11604that these values will vary depending on the efficiency of the compiler 11605and 11606the compiler options used during generation. 11607 11608 Previous Release: 11609 11610 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11611 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11612 Current Release: 11613 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11614 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11615 11616---------------------------------------- 1161711 March 2004. Summary of changes for version 20040311: 11618 116191) ACPI CA Core Subsystem: 11620 11621Fixed a problem where errors occurring during the parse phase of control 11622method execution did not abort cleanly. For example, objects created and 11623installed in the namespace were not deleted. This caused all subsequent 11624invocations of the method to return the AE_ALREADY_EXISTS exception. 11625 11626Implemented a mechanism to force a control method to "Serialized" 11627execution 11628if the method attempts to create namespace objects. (The root of the 11629AE_ALREADY_EXISTS problem.) 11630 11631Implemented support for the predefined _OSI "internal" control method. 11632Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 11633and 11634"Windows 2001.1", and can be easily upgraded for new strings as 11635necessary. 11636This feature will allow "other" operating systems to execute the fully 11637tested, "Windows" code path through the ASL code 11638 11639Global Lock Support: Now allows multiple acquires and releases with any 11640internal thread. Removed concept of "owning thread" for this special 11641mutex. 11642 11643Fixed two functions that were inappropriately declaring large objects on 11644the 11645CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 11646during 11647method execution considerably. 11648 11649Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 11650S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 11651 11652Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 11653defined on the machine. 11654 11655Implemented two runtime options: One to force all control method 11656execution 11657to "Serialized" to mimic Windows behavior, another to disable _OSI 11658support 11659if it causes problems on a given machine. 11660 11661Code and Data Size: Current and previous core subsystem library sizes are 11662shown below. These are the code and data sizes for the acpica.lib 11663produced 11664by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11665any ACPI driver or OSPM code. The debug version of the code includes the 11666debug output trace mechanism and has a much larger code and data size. 11667Note 11668that these values will vary depending on the efficiency of the compiler 11669and 11670the compiler options used during generation. 11671 11672 Previous Release: 11673 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11674 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11675 Current Release: 11676 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11677 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11678 116792) iASL Compiler/Disassembler: 11680 11681Fixed an array size problem for FreeBSD that would cause the compiler to 11682fault. 11683 11684---------------------------------------- 1168520 February 2004. Summary of changes for version 20040220: 11686 11687 116881) ACPI CA Core Subsystem: 11689 11690Implemented execution of _SxD methods for Device objects in the 11691GetObjectInfo interface. 11692 11693Fixed calls to _SST method to pass the correct arguments. 11694 11695Added a call to _SST on wake to restore to "working" state. 11696 11697Check for End-Of-Buffer failure case in the WalkResources interface. 11698 11699Integrated fix for 64-bit alignment issue in acglobal.h by moving two 11700structures to the beginning of the file. 11701 11702After wake, clear GPE status register(s) before enabling GPEs. 11703 11704After wake, clear/enable power button. (Perhaps we should clear/enable 11705all 11706fixed events upon wake.) 11707 11708Fixed a couple of possible memory leaks in the Namespace manager. 11709 11710Integrated latest acnetbsd.h file. 11711 11712---------------------------------------- 1171311 February 2004. Summary of changes for version 20040211: 11714 11715 117161) ACPI CA Core Subsystem: 11717 11718Completed investigation and implementation of the call-by-reference 11719mechanism for control method arguments. 11720 11721Fixed a problem where a store of an object into an indexed package could 11722fail if the store occurs within a different method than the method that 11723created the package. 11724 11725Fixed a problem where the ToDecimal operator could return incorrect 11726results. 11727 11728Fixed a problem where the CopyObject operator could fail on some of the 11729more 11730obscure objects (e.g., Reference objects.) 11731 11732Improved the output of the Debug object to display buffer, package, and 11733index objects. 11734 11735Fixed a problem where constructs of the form "RefOf (ArgX)" did not 11736return 11737the expected result. 11738 11739Added permanent ACPI_REPORT_ERROR macros for all instances of the 11740ACPI_AML_INTERNAL exception. 11741 11742Integrated latest version of acfreebsd.h 11743 11744---------------------------------------- 1174516 January 2004. Summary of changes for version 20040116: 11746 11747The purpose of this release is primarily to update the copyright years in 11748each module, thus causing a huge number of diffs. There are a few small 11749functional changes, however. 11750 117511) ACPI CA Core Subsystem: 11752 11753Improved error messages when there is a problem finding one or more of 11754the 11755required base ACPI tables 11756 11757Reintroduced the definition of APIC_HEADER in actbl.h 11758 11759Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 11760 11761Removed extraneous reference to NewObj in dsmthdat.c 11762 117632) iASL compiler 11764 11765Fixed a problem introduced in December that disabled the correct 11766disassembly 11767of Resource Templates 11768 11769 11770---------------------------------------- 1177103 December 2003. Summary of changes for version 20031203: 11772 117731) ACPI CA Core Subsystem: 11774 11775Changed the initialization of Operation Regions during subsystem 11776init to perform two entire walks of the ACPI namespace; The first 11777to initialize the regions themselves, the second to execute the 11778_REG methods. This fixed some interdependencies across _REG 11779methods found on some machines. 11780 11781Fixed a problem where a Store(Local0, Local1) could simply update 11782the object reference count, and not create a new copy of the 11783object if the Local1 is uninitialized. 11784 11785Implemented support for the _SST reserved method during sleep 11786transitions. 11787 11788Implemented support to clear the SLP_TYP and SLP_EN bits when 11789waking up, this is apparently required by some machines. 11790 11791When sleeping, clear the wake status only if SleepState is not S5. 11792 11793Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 11794pointer arithmetic advanced a string pointer too far. 11795 11796Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 11797could be returned if the requested table has not been loaded. 11798 11799Within the support for IRQ resources, restructured the handling of 11800the active and edge/level bits. 11801 11802Fixed a few problems in AcpiPsxExecute() where memory could be 11803leaked under certain error conditions. 11804 11805Improved error messages for the cases where the ACPI mode could 11806not be entered. 11807 11808Code and Data Size: Current and previous core subsystem library 11809sizes are shown below. These are the code and data sizes for the 11810acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11811these values do not include any ACPI driver or OSPM code. The 11812debug version of the code includes the debug output trace 11813mechanism and has a much larger code and data size. Note that 11814these values will vary depending on the efficiency of the compiler 11815and the compiler options used during generation. 11816 11817 Previous Release (20031029): 11818 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11819 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11820 Current Release: 11821 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11822 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11823 118242) iASL Compiler/Disassembler: 11825 11826Implemented a fix for the iASL disassembler where a bad index was 11827generated. This was most noticeable on 64-bit platforms 11828 11829 11830---------------------------------------- 1183129 October 2003. Summary of changes for version 20031029: 11832 118331) ACPI CA Core Subsystem: 11834 11835 11836Fixed a problem where a level-triggered GPE with an associated 11837_Lxx control method was incorrectly cleared twice. 11838 11839Fixed a problem with the Field support code where an access can 11840occur beyond the end-of-region if the field is non-aligned but 11841extends to the very end of the parent region (resulted in an 11842AE_AML_REGION_LIMIT exception.) 11843 11844Fixed a problem with ACPI Fixed Events where an RT Clock handler 11845would not get invoked on an RTC event. The RTC event bitmasks for 11846the PM1 registers were not being initialized properly. 11847 11848Implemented support for executing _STA and _INI methods for 11849Processor objects. Although this is currently not part of the 11850ACPI specification, there is existing ASL code that depends on the 11851init-time execution of these methods. 11852 11853Implemented and deployed a GetDescriptorName function to decode 11854the various types of internal descriptors. Guards against null 11855descriptors during debug output also. 11856 11857Implemented and deployed a GetNodeName function to extract the 4- 11858character namespace node name. This function simplifies the debug 11859and error output, as well as guarding against null pointers during 11860output. 11861 11862Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 11863simplify the debug and error output of 64-bit integers. This 11864macro replaces the HIDWORD and LODWORD macros for dumping these 11865integers. 11866 11867Updated the implementation of the Stall() operator to only call 11868AcpiOsStall(), and also return an error if the operand is larger 11869than 255. This preserves the required behavior of not 11870relinquishing the processor, as would happen if AcpiOsSleep() was 11871called for "long stalls". 11872 11873Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 11874initialized are now treated as NOOPs. 11875 11876Cleaned up a handful of warnings during 64-bit generation. 11877 11878Fixed a reported error where and incorrect GPE number was passed 11879to the GPE dispatch handler. This value is only used for error 11880output, however. Used this opportunity to clean up and streamline 11881the GPE dispatch code. 11882 11883Code and Data Size: Current and previous core subsystem library 11884sizes are shown below. These are the code and data sizes for the 11885acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11886these values do not include any ACPI driver or OSPM code. The 11887 11888debug version of the code includes the debug output trace 11889mechanism and has a much larger code and data size. Note that 11890these values will vary depending on the efficiency of the compiler 11891and the compiler options used during generation. 11892 11893 Previous Release (20031002): 11894 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11895 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11896 Current Release: 11897 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11898 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11899 11900 119012) iASL Compiler/Disassembler: 11902 11903Updated the iASL compiler to return an error if the operand to the 11904Stall() operator is larger than 255. 11905 11906 11907---------------------------------------- 1190802 October 2003. Summary of changes for version 20031002: 11909 11910 119111) ACPI CA Core Subsystem: 11912 11913Fixed a problem with Index Fields where the index was not 11914incremented for fields that require multiple writes to the 11915index/data registers (Fields that are wider than the data 11916register.) 11917 11918Fixed a problem with all Field objects where a write could go 11919beyond the end-of-field if the field was larger than the access 11920granularity and therefore required multiple writes to complete the 11921request. An extra write beyond the end of the field could happen 11922inadvertently. 11923 11924Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 11925would incorrectly be returned if the width of the Data Register 11926was larger than the specified field access width. 11927 11928Completed fixes for LoadTable() and Unload() and verified their 11929operation. Implemented full support for the "DdbHandle" object 11930throughout the ACPI CA subsystem. 11931 11932Implemented full support for the MADT and ECDT tables in the ACPI 11933CA header files. Even though these tables are not directly 11934consumed by ACPI CA, the header definitions are useful for ACPI 11935device drivers. 11936 11937Integrated resource descriptor fixes posted to the Linux ACPI 11938list. This included checks for minimum descriptor length, and 11939support for trailing NULL strings within descriptors that have 11940optional string elements. 11941 11942Code and Data Size: Current and previous core subsystem library 11943sizes are shown below. These are the code and data sizes for the 11944acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11945these values do not include any ACPI driver or OSPM code. The 11946debug version of the code includes the debug output trace 11947mechanism and has a much larger code and data size. Note that 11948these values will vary depending on the efficiency of the compiler 11949and the compiler options used during generation. 11950 11951 Previous Release (20030918): 11952 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11953 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11954 Current Release: 11955 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11956 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11957 11958 119592) iASL Compiler: 11960 11961Implemented detection of non-ASCII characters within the input 11962source ASL file. This catches attempts to compile binary (AML) 11963files early in the compile, with an informative error message. 11964 11965Fixed a problem where the disassembler would fault if the output 11966filename could not be generated or if the output file could not be 11967opened. 11968 11969---------------------------------------- 1197018 September 2003. Summary of changes for version 20030918: 11971 11972 119731) ACPI CA Core Subsystem: 11974 11975Found and fixed a longstanding problem with the late execution of 11976the various deferred AML opcodes (such as Operation Regions, 11977Buffer Fields, Buffers, and Packages). If the name string 11978specified for the name of the new object placed the object in a 11979scope other than the current scope, the initialization/execution 11980of the opcode failed. The solution to this problem was to 11981implement a mechanism where the late execution of such opcodes 11982does not attempt to lookup/create the name a second time in an 11983incorrect scope. This fixes the "region size computed 11984incorrectly" problem. 11985 11986Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 11987Global Lock AE_BAD_PARAMETER error. 11988 11989Fixed several 64-bit issues with prototypes, casting and data 11990types. 11991 11992Removed duplicate prototype from acdisasm.h 11993 11994Fixed an issue involving EC Operation Region Detach (Shaohua Li) 11995 11996Code and Data Size: Current and previous core subsystem library 11997sizes are shown below. These are the code and data sizes for the 11998acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11999these values do not include any ACPI driver or OSPM code. The 12000debug version of the code includes the debug output trace 12001mechanism and has a much larger code and data size. Note that 12002these values will vary depending on the efficiency of the compiler 12003and the compiler options used during generation. 12004 12005 Previous Release: 12006 12007 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12008 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12009 Current Release: 12010 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12011 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12012 12013 120142) Linux: 12015 12016Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 12017correct sleep time in seconds. 12018 12019---------------------------------------- 1202014 July 2003. Summary of changes for version 20030619: 12021 120221) ACPI CA Core Subsystem: 12023 12024Parse SSDTs in order discovered, as opposed to reverse order 12025(Hrvoje Habjanic) 12026 12027Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 12028Klausner, 12029 Nate Lawson) 12030 12031 120322) Linux: 12033 12034Dynamically allocate SDT list (suggested by Andi Kleen) 12035 12036proc function return value cleanups (Andi Kleen) 12037 12038Correctly handle NMI watchdog during long stalls (Andrew Morton) 12039 12040Make it so acpismp=force works (reported by Andrew Morton) 12041 12042 12043---------------------------------------- 1204419 June 2003. Summary of changes for version 20030619: 12045 120461) ACPI CA Core Subsystem: 12047 12048Fix To/FromBCD, eliminating the need for an arch-specific #define. 12049 12050Do not acquire a semaphore in the S5 shutdown path. 12051 12052Fix ex_digits_needed for 0. (Takayoshi Kochi) 12053 12054Fix sleep/stall code reversal. (Andi Kleen) 12055 12056Revert a change having to do with control method calling 12057semantics. 12058 120592) Linux: 12060 12061acpiphp update (Takayoshi Kochi) 12062 12063Export acpi_disabled for sonypi (Stelian Pop) 12064 12065Mention acpismp=force in config help 12066 12067Re-add acpitable.c and acpismp=force. This improves backwards 12068 12069compatibility and also cleans up the code to a significant degree. 12070 12071Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 12072 12073---------------------------------------- 1207422 May 2003. Summary of changes for version 20030522: 12075 120761) ACPI CA Core Subsystem: 12077 12078Found and fixed a reported problem where an AE_NOT_FOUND error 12079occurred occasionally during _BST evaluation. This turned out to 12080be an Owner ID allocation issue where a called method did not get 12081a new ID assigned to it. Eventually, (after 64k calls), the Owner 12082ID UINT16 would wraparound so that the ID would be the same as the 12083caller's and the called method would delete the caller's 12084namespace. 12085 12086Implemented extended error reporting for control methods that are 12087aborted due to a run-time exception. Output includes the exact 12088AML instruction that caused the method abort, a dump of the method 12089locals and arguments at the time of the abort, and a trace of all 12090nested control method calls. 12091 12092Modified the interpreter to allow the creation of buffers of zero 12093length from the AML code. Implemented new code to ensure that no 12094attempt is made to actually allocate a memory buffer (of length 12095zero) - instead, a simple buffer object with a NULL buffer pointer 12096and length zero is created. A warning is no longer issued when 12097the AML attempts to create a zero-length buffer. 12098 12099Implemented a workaround for the "leading asterisk issue" in 12100_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 12101asterisk is automatically removed if present in any HID, UID, or 12102CID strings. The iASL compiler will still flag this asterisk as 12103an error, however. 12104 12105Implemented full support for _CID methods that return a package of 12106multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 12107now additionally returns a device _CID list if present. This 12108required a change to the external interface in order to pass an 12109ACPI_BUFFER object as a parameter since the _CID list is of 12110variable length. 12111 12112Fixed a problem with the new AE_SAME_HANDLER exception where 12113handler initialization code did not know about this exception. 12114 12115Code and Data Size: Current and previous core subsystem library 12116sizes are shown below. These are the code and data sizes for the 12117acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12118these values do not include any ACPI driver or OSPM code. The 12119debug version of the code includes the debug output trace 12120mechanism and has a much larger code and data size. Note that 12121these values will vary depending on the efficiency of the compiler 12122and the compiler options used during generation. 12123 12124 Previous Release (20030509): 12125 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12126 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12127 Current Release: 12128 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12129 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12130 12131 121322) Linux: 12133 12134Fixed a bug in which we would reinitialize the ACPI interrupt 12135after it was already working, thus disabling all ACPI and the IRQs 12136for any other device sharing the interrupt. (Thanks to Stian 12137Jordet) 12138 12139Toshiba driver update (John Belmonte) 12140 12141Return only 0 or 1 for our interrupt handler status (Andrew 12142Morton) 12143 12144 121453) iASL Compiler: 12146 12147Fixed a reported problem where multiple (nested) ElseIf() 12148statements were not handled correctly by the compiler, resulting 12149in incorrect warnings and incorrect AML code. This was a problem 12150in both the ASL parser and the code generator. 12151 12152 121534) Documentation: 12154 12155Added changes to existing interfaces, new exception codes, and new 12156text concerning reference count object management versus garbage 12157collection. 12158 12159---------------------------------------- 1216009 May 2003. Summary of changes for version 20030509. 12161 12162 121631) ACPI CA Core Subsystem: 12164 12165Changed the subsystem initialization sequence to hold off 12166installation of address space handlers until the hardware has been 12167initialized and the system has entered ACPI mode. This is because 12168the installation of space handlers can cause _REG methods to be 12169run. Previously, the _REG methods could potentially be run before 12170ACPI mode was enabled. 12171 12172Fixed some memory leak issues related to address space handler and 12173notify handler installation. There were some problems with the 12174reference count mechanism caused by the fact that the handler 12175objects are shared across several namespace objects. 12176 12177Fixed a reported problem where reference counts within the 12178namespace were not properly updated when named objects created by 12179method execution were deleted. 12180 12181Fixed a reported problem where multiple SSDTs caused a deletion 12182issue during subsystem termination. Restructured the table data 12183structures to simplify the linked lists and the related code. 12184 12185Fixed a problem where the table ID associated with secondary 12186tables (SSDTs) was not being propagated into the namespace objects 12187created by those tables. This would only present a problem for 12188tables that are unloaded at run-time, however. 12189 12190Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 12191type as the length parameter (instead of UINT32). 12192 12193Solved a long-standing problem where an ALREADY_EXISTS error 12194appears on various systems. This problem could happen when there 12195are multiple PCI_Config operation regions under a single PCI root 12196bus. This doesn't happen very frequently, but there are some 12197systems that do this in the ASL. 12198 12199Fixed a reported problem where the internal DeleteNode function 12200was incorrectly handling the case where a namespace node was the 12201first in the parent's child list, and had additional peers (not 12202the only child, but first in the list of children.) 12203 12204Code and Data Size: Current core subsystem library sizes are shown 12205below. These are the code and data sizes for the acpica.lib 12206produced by the Microsoft Visual C++ 6.0 compiler, and these 12207values do not include any ACPI driver or OSPM code. The debug 12208version of the code includes the debug output trace mechanism and 12209has a much larger code and data size. Note that these values will 12210vary depending on the efficiency of the compiler and the compiler 12211options used during generation. 12212 12213 Previous Release 12214 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12215 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12216 Current Release: 12217 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12218 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12219 12220 122212) Linux: 12222 12223Allow ":" in OS override string (Ducrot Bruno) 12224 12225Kobject fix (Greg KH) 12226 12227 122283 iASL Compiler/Disassembler: 12229 12230Fixed a problem in the generation of the C source code files (AML 12231is emitted in C source statements for BIOS inclusion) where the 12232Ascii dump that appears within a C comment at the end of each line 12233could cause a compile time error if the AML sequence happens to 12234have an open comment or close comment sequence embedded. 12235 12236 12237---------------------------------------- 1223824 April 2003. Summary of changes for version 20030424. 12239 12240 122411) ACPI CA Core Subsystem: 12242 12243Support for big-endian systems has been implemented. Most of the 12244support has been invisibly added behind big-endian versions of the 12245ACPI_MOVE_* macros. 12246 12247Fixed a problem in AcpiHwDisableGpeBlock() and 12248AcpiHwClearGpeBlock() where an incorrect offset was passed to the 12249low level hardware write routine. The offset parameter was 12250actually eliminated from the low level read/write routines because 12251they had become obsolete. 12252 12253Fixed a problem where a handler object was deleted twice during 12254the removal of a fixed event handler. 12255 12256 122572) Linux: 12258 12259A fix for SMP systems with link devices was contributed by 12260 12261Compaq's Dan Zink. 12262 12263(2.5) Return whether we handled the interrupt in our IRQ handler. 12264(Linux ISRs no longer return void, so we can propagate the handler 12265return value from the ACPI CA core back to the OS.) 12266 12267 12268 122693) Documentation: 12270 12271The ACPI CA Programmer Reference has been updated to reflect new 12272interfaces and changes to existing interfaces. 12273 12274---------------------------------------- 1227528 March 2003. Summary of changes for version 20030328. 12276 122771) ACPI CA Core Subsystem: 12278 12279The GPE Block Device support has been completed. New interfaces 12280are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 12281interfaces (enable, disable, clear, getstatus) have been split 12282into separate interfaces for Fixed Events and General Purpose 12283Events (GPEs) in order to support GPE Block Devices properly. 12284 12285Fixed a problem where the error message "Failed to acquire 12286semaphore" would appear during operations on the embedded 12287controller (EC). 12288 12289Code and Data Size: Current core subsystem library sizes are shown 12290below. These are the code and data sizes for the acpica.lib 12291produced by the Microsoft Visual C++ 6.0 compiler, and these 12292values do not include any ACPI driver or OSPM code. The debug 12293version of the code includes the debug output trace mechanism and 12294has a much larger code and data size. Note that these values will 12295vary depending on the efficiency of the compiler and the compiler 12296options used during generation. 12297 12298 Previous Release 12299 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12300 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12301 Current Release: 12302 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12303 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12304 12305 12306---------------------------------------- 1230728 February 2003. Summary of changes for version 20030228. 12308 12309 123101) ACPI CA Core Subsystem: 12311 12312The GPE handling and dispatch code has been completely overhauled 12313in preparation for support of GPE Block Devices (ID ACPI0006). 12314This affects internal data structures and code only; there should 12315be no differences visible externally. One new file has been 12316added, evgpeblk.c 12317 12318The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 12319fields that are used to determine the GPE block lengths. The 12320REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 12321structures are ignored. This is per the ACPI specification but it 12322isn't very clear. The full 256 Block 0/1 GPEs are now supported 12323(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 12324 12325In the SCI interrupt handler, removed the read of the PM1_CONTROL 12326register to look at the SCI_EN bit. On some machines, this read 12327causes an SMI event and greatly slows down SCI events. (This may 12328in fact be the cause of slow battery status response on some 12329systems.) 12330 12331Fixed a problem where a store of a NULL string to a package object 12332could cause the premature deletion of the object. This was seen 12333during execution of the battery _BIF method on some systems, 12334resulting in no battery data being returned. 12335 12336Added AcpiWalkResources interface to simplify parsing of resource 12337lists. 12338 12339Code and Data Size: Current core subsystem library sizes are shown 12340below. These are the code and data sizes for the acpica.lib 12341produced by the Microsoft Visual C++ 6.0 compiler, and these 12342values do not include any ACPI driver or OSPM code. The debug 12343version of the code includes the debug output trace mechanism and 12344has a much larger code and data size. Note that these values will 12345vary depending on the efficiency of the compiler and the compiler 12346options used during generation. 12347 12348 Previous Release 12349 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12350 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12351 Current Release: 12352 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12353 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12354 12355 123562) Linux 12357 12358S3 fixes (Ole Rohne) 12359 12360Update ACPI PHP driver with to use new acpi_walk_resource API 12361(Bjorn Helgaas) 12362 12363Add S4BIOS support (Pavel Machek) 12364 12365Map in entire table before performing checksum (John Stultz) 12366 12367Expand the mem= cmdline to allow the specification of reserved and 12368ACPI DATA blocks (Pavel Machek) 12369 12370Never use ACPI on VISWS 12371 12372Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 12373 12374Revert a change that allowed P_BLK lengths to be 4 or 5. This is 12375causing us to think that some systems support C2 when they really 12376don't. 12377 12378Do not count processor objects for non-present CPUs (Thanks to 12379Dominik Brodowski) 12380 12381 123823) iASL Compiler: 12383 12384Fixed a problem where ASL include files could not be found and 12385opened. 12386 12387Added support for the _PDC reserved name. 12388 12389 12390---------------------------------------- 1239122 January 2003. Summary of changes for version 20030122. 12392 12393 123941) ACPI CA Core Subsystem: 12395 12396Added a check for constructs of the form: Store (Local0, Local0) 12397where Local0 is not initialized. Apparently, some BIOS 12398programmers believe that this is a NOOP. Since this store doesn't 12399do anything anyway, the new prototype behavior will ignore this 12400error. This is a case where we can relax the strict checking in 12401the interpreter in the name of compatibility. 12402 12403 124042) Linux 12405 12406The AcpiSrc Source Conversion Utility has been released with the 12407Linux package for the first time. This is the utility that is 12408used to convert the ACPI CA base source code to the Linux version. 12409 12410(Both) Handle P_BLK lengths shorter than 6 more gracefully 12411 12412(Both) Move more headers to include/acpi, and delete an unused 12413header. 12414 12415(Both) Move drivers/acpi/include directory to include/acpi 12416 12417(Both) Boot functions don't use cmdline, so don't pass it around 12418 12419(Both) Remove include of unused header (Adrian Bunk) 12420 12421(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 12422the 12423former now also includes the latter, acpiphp.h only needs the one, 12424now. 12425 12426(2.5) Make it possible to select method of bios restoring after S3 12427resume. [=> no more ugly ifdefs] (Pavel Machek) 12428 12429(2.5) Make proc write interfaces work (Pavel Machek) 12430 12431(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 12432 12433(2.5) Break out ACPI Perf code into its own module, under cpufreq 12434(Dominik Brodowski) 12435 12436(2.4) S4BIOS support (Ducrot Bruno) 12437 12438(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 12439Visinoni) 12440 12441 124423) iASL Compiler: 12443 12444Added support to disassemble SSDT and PSDTs. 12445 12446Implemented support to obtain SSDTs from the Windows registry if 12447available. 12448 12449 12450---------------------------------------- 1245109 January 2003. Summary of changes for version 20030109. 12452 124531) ACPI CA Core Subsystem: 12454 12455Changed the behavior of the internal Buffer-to-String conversion 12456function. The current ACPI specification states that the contents 12457of the buffer are "converted to a string of two-character 12458hexadecimal numbers, each separated by a space". Unfortunately, 12459this definition is not backwards compatible with existing ACPI 1.0 12460implementations (although the behavior was not defined in the ACPI 124611.0 specification). The new behavior simply copies data from the 12462buffer to the string until a null character is found or the end of 12463the buffer is reached. The new String object is always null 12464terminated. This problem was seen during the generation of _BIF 12465battery data where incorrect strings were returned for battery 12466type, etc. This will also require an errata to the ACPI 12467specification. 12468 12469Renamed all instances of NATIVE_UINT and NATIVE_INT to 12470ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 12471 12472Copyright in all module headers (both Linux and non-Linux) has be 12473updated to 2003. 12474 12475Code and Data Size: Current core subsystem library sizes are shown 12476below. These are the code and data sizes for the acpica.lib 12477produced by the Microsoft Visual C++ 6.0 compiler, and these 12478values do not include any ACPI driver or OSPM code. The debug 12479version of the code includes the debug output trace mechanism and 12480has a much larger code and data size. Note that these values will 12481vary depending on the efficiency of the compiler and the compiler 12482options used during generation. 12483 12484 Previous Release 12485 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12486 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12487 Current Release: 12488 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12489 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12490 12491 124922) Linux 12493 12494Fixed an oops on module insertion/removal (Matthew Tippett) 12495 12496(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 12497 12498(2.5) Replace pr_debug (Randy Dunlap) 12499 12500(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 12501 12502(Both) Eliminate spawning of thread from timer callback, in favor 12503of schedule_work() 12504 12505(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 12506 12507(Both) Added define for Fixed Function HW region (Matthew Wilcox) 12508 12509(Both) Add missing statics to button.c (Pavel Machek) 12510 12511Several changes have been made to the source code translation 12512utility that generates the Linux Code in order to make the code 12513more "Linux-like": 12514 12515All typedefs on structs and unions have been removed in keeping 12516with the Linux coding style. 12517 12518Removed the non-Linux SourceSafe module revision number from each 12519module header. 12520 12521Completed major overhaul of symbols to be lowercased for linux. 12522Doubled the number of symbols that are lowercased. 12523 12524Fixed a problem where identifiers within procedure headers and 12525within quotes were not fully lower cased (they were left with a 12526starting capital.) 12527 12528Some C macros whose only purpose is to allow the generation of 16- 12529bit code are now completely removed in the Linux code, increasing 12530readability and maintainability. 12531 12532---------------------------------------- 12533 1253412 December 2002. Summary of changes for version 20021212. 12535 12536 125371) ACPI CA Core Subsystem: 12538 12539Fixed a problem where the creation of a zero-length AML Buffer 12540would cause a fault. 12541 12542Fixed a problem where a Buffer object that pointed to a static AML 12543buffer (in an ACPI table) could inadvertently be deleted, causing 12544memory corruption. 12545 12546Fixed a problem where a user buffer (passed in to the external 12547ACPI CA interfaces) could be overwritten if the buffer was too 12548small to complete the operation, causing memory corruption. 12549 12550Fixed a problem in the Buffer-to-String conversion code where a 12551string of length one was always returned, regardless of the size 12552of the input Buffer object. 12553 12554Removed the NATIVE_CHAR data type across the entire source due to 12555lack of need and lack of consistent use. 12556 12557Code and Data Size: Current core subsystem library sizes are shown 12558below. These are the code and data sizes for the acpica.lib 12559produced by the Microsoft Visual C++ 6.0 compiler, and these 12560values do not include any ACPI driver or OSPM code. The debug 12561version of the code includes the debug output trace mechanism and 12562has a much larger code and data size. Note that these values will 12563vary depending on the efficiency of the compiler and the compiler 12564options used during generation. 12565 12566 Previous Release 12567 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12568 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12569 Current Release: 12570 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12571 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12572 12573 12574---------------------------------------- 1257505 December 2002. Summary of changes for version 20021205. 12576 125771) ACPI CA Core Subsystem: 12578 12579Fixed a problem where a store to a String or Buffer object could 12580cause corruption of the DSDT if the object type being stored was 12581the same as the target object type and the length of the object 12582being stored was equal to or smaller than the original (existing) 12583target object. This was seen to cause corruption of battery _BIF 12584buffers if the _BIF method modified the buffer on the fly. 12585 12586Fixed a problem where an internal error was generated if a control 12587method invocation was used in an OperationRegion, Buffer, or 12588Package declaration. This was caused by the deferred parsing of 12589the control method and thus the deferred creation of the internal 12590method object. The solution to this problem was to create the 12591internal method object at the moment the method is encountered in 12592the first pass - so that subsequent references to the method will 12593able to obtain the required parameter count and thus properly 12594parse the method invocation. This problem presented itself as an 12595AE_AML_INTERNAL during the pass 1 parse phase during table load. 12596 12597Fixed a problem where the internal String object copy routine did 12598not always allocate sufficient memory for the target String object 12599and caused memory corruption. This problem was seen to cause 12600"Allocation already present in list!" errors as memory allocation 12601became corrupted. 12602 12603Implemented a new function for the evaluation of namespace objects 12604that allows the specification of the allowable return object 12605types. This simplifies a lot of code that checks for a return 12606object of one or more specific objects returned from the 12607evaluation (such as _STA, etc.) This may become and external 12608function if it would be useful to ACPI-related drivers. 12609 12610Completed another round of prefixing #defines with "ACPI_" for 12611clarity. 12612 12613Completed additional code restructuring to allow more modular 12614linking for iASL compiler and AcpiExec. Several files were split 12615creating new files. New files: nsparse.c dsinit.c evgpe.c 12616 12617Implemented an abort mechanism to terminate an executing control 12618method via the AML debugger. This feature is useful for debugging 12619control methods that depend (wait) for specific hardware 12620responses. 12621 12622Code and Data Size: Current core subsystem library sizes are shown 12623below. These are the code and data sizes for the acpica.lib 12624produced by the Microsoft Visual C++ 6.0 compiler, and these 12625values do not include any ACPI driver or OSPM code. The debug 12626version of the code includes the debug output trace mechanism and 12627has a much larger code and data size. Note that these values will 12628vary depending on the efficiency of the compiler and the compiler 12629options used during generation. 12630 12631 Previous Release 12632 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12633 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12634 Current Release: 12635 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12636 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12637 12638 126392) iASL Compiler/Disassembler 12640 12641Fixed a compiler code generation problem for "Interrupt" Resource 12642Descriptors. If specified in the ASL, the optional "Resource 12643Source Index" and "Resource Source" fields were not inserted into 12644the correct location within the AML resource descriptor, creating 12645an invalid descriptor. 12646 12647Fixed a disassembler problem for "Interrupt" resource descriptors. 12648The optional "Resource Source Index" and "Resource Source" fields 12649were ignored. 12650 12651 12652---------------------------------------- 1265322 November 2002. Summary of changes for version 20021122. 12654 12655 126561) ACPI CA Core Subsystem: 12657 12658Fixed a reported problem where an object stored to a Method Local 12659or Arg was not copied to a new object during the store - the 12660object pointer was simply copied to the Local/Arg. This caused 12661all subsequent operations on the Local/Arg to also affect the 12662original source of the store operation. 12663 12664Fixed a problem where a store operation to a Method Local or Arg 12665was not completed properly if the Local/Arg contained a reference 12666(from RefOf) to a named field. The general-purpose store-to- 12667namespace-node code is now used so that this case is handled 12668automatically. 12669 12670Fixed a problem where the internal object copy routine would cause 12671a protection fault if the object being copied was a Package and 12672contained either 1) a NULL package element or 2) a nested sub- 12673package. 12674 12675Fixed a problem with the GPE initialization that resulted from an 12676ambiguity in the ACPI specification. One section of the 12677specification states that both the address and length of the GPE 12678block must be zero if the block is not supported. Another section 12679implies that only the address need be zero if the block is not 12680supported. The code has been changed so that both the address and 12681the length must be non-zero to indicate a valid GPE block (i.e., 12682if either the address or the length is zero, the GPE block is 12683invalid.) 12684 12685Code and Data Size: Current core subsystem library sizes are shown 12686below. These are the code and data sizes for the acpica.lib 12687produced by the Microsoft Visual C++ 6.0 compiler, and these 12688values do not include any ACPI driver or OSPM code. The debug 12689version of the code includes the debug output trace mechanism and 12690has a much larger code and data size. Note that these values will 12691vary depending on the efficiency of the compiler and the compiler 12692options used during generation. 12693 12694 Previous Release 12695 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12696 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12697 Current Release: 12698 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12699 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12700 12701 127022) Linux 12703 12704Cleaned up EC driver. Exported an external EC read/write 12705interface. By going through this, other drivers (most notably 12706sonypi) will be able to serialize access to the EC. 12707 12708 127093) iASL Compiler/Disassembler 12710 12711Implemented support to optionally generate include files for both 12712ASM and C (the -i switch). This simplifies BIOS development by 12713automatically creating include files that contain external 12714declarations for the symbols that are created within the 12715 12716(optionally generated) ASM and C AML source files. 12717 12718 12719---------------------------------------- 1272015 November 2002. Summary of changes for version 20021115. 12721 127221) ACPI CA Core Subsystem: 12723 12724Fixed a memory leak problem where an error during resolution of 12725 12726method arguments during a method invocation from another method 12727failed to cleanup properly by deleting all successfully resolved 12728argument objects. 12729 12730Fixed a problem where the target of the Index() operator was not 12731correctly constructed if the source object was a package. This 12732problem has not been detected because the use of a target operand 12733with Index() is very rare. 12734 12735Fixed a problem with the Index() operator where an attempt was 12736made to delete the operand objects twice. 12737 12738Fixed a problem where an attempt was made to delete an operand 12739twice during execution of the CondRefOf() operator if the target 12740did not exist. 12741 12742Implemented the first of perhaps several internal create object 12743functions that create and initialize a specific object type. This 12744consolidates duplicated code wherever the object is created, thus 12745shrinking the size of the subsystem. 12746 12747Implemented improved debug/error messages for errors that occur 12748during nested method invocations. All executing method pathnames 12749are displayed (with the error) as the call stack is unwound - thus 12750simplifying debug. 12751 12752Fixed a problem introduced in the 10/02 release that caused 12753premature deletion of a buffer object if a buffer was used as an 12754ASL operand where an integer operand is required (Thus causing an 12755implicit object conversion from Buffer to Integer.) The change in 12756the 10/02 release was attempting to fix a memory leak (albeit 12757incorrectly.) 12758 12759Code and Data Size: Current core subsystem library sizes are shown 12760below. These are the code and data sizes for the acpica.lib 12761produced by the Microsoft Visual C++ 6.0 compiler, and these 12762values do not include any ACPI driver or OSPM code. The debug 12763version of the code includes the debug output trace mechanism and 12764has a much larger code and data size. Note that these values will 12765vary depending on the efficiency of the compiler and the compiler 12766options used during generation. 12767 12768 Previous Release 12769 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12770 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12771 Current Release: 12772 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12773 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12774 12775 127762) Linux 12777 12778Changed the implementation of the ACPI semaphores to use down() 12779instead of down_interruptable(). It is important that the 12780execution of ACPI control methods not be interrupted by signals. 12781Methods must run to completion, or the system may be left in an 12782unknown/unstable state. 12783 12784Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 12785(Shawn Starr) 12786 12787 127883) iASL Compiler/Disassembler 12789 12790 12791Changed the default location of output files. All output files 12792are now placed in the current directory by default instead of in 12793the directory of the source file. This change may affect some 12794existing makefiles, but it brings the behavior of the compiler in 12795line with other similar tools. The location of the output files 12796can be overridden with the -p command line switch. 12797 12798 12799---------------------------------------- 1280011 November 2002. Summary of changes for version 20021111. 12801 12802 128030) ACPI Specification 2.0B is released and is now available at: 12804http://www.acpi.info/index.html 12805 12806 128071) ACPI CA Core Subsystem: 12808 12809Implemented support for the ACPI 2.0 SMBus Operation Regions. 12810This includes the early detection and handoff of the request to 12811the SMBus region handler (avoiding all of the complex field 12812support code), and support for the bidirectional return packet 12813from an SMBus write operation. This paves the way for the 12814development of SMBus drivers in each host operating system. 12815 12816Fixed a problem where the semaphore WAIT_FOREVER constant was 12817defined as 32 bits, but must be 16 bits according to the ACPI 12818specification. This had the side effect of causing ASL 12819Mutex/Event timeouts even though the ASL code requested a wait 12820forever. Changed all internal references to the ACPI timeout 12821parameter to 16 bits to prevent future problems. Changed the name 12822of WAIT_FOREVER to ACPI_WAIT_FOREVER. 12823 12824Code and Data Size: Current core subsystem library sizes are shown 12825below. These are the code and data sizes for the acpica.lib 12826produced by the Microsoft Visual C++ 6.0 compiler, and these 12827values do not include any ACPI driver or OSPM code. The debug 12828version of the code includes the debug output trace mechanism and 12829has a much larger code and data size. Note that these values will 12830vary depending on the efficiency of the compiler and the compiler 12831options used during generation. 12832 12833 Previous Release 12834 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12835 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12836 Current Release: 12837 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12838 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12839 12840 128412) Linux 12842 12843Module loading/unloading fixes (John Cagle) 12844 12845 128463) iASL Compiler/Disassembler 12847 12848Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 12849 12850Implemented support for the disassembly of all SMBus protocol 12851keywords (SMBQuick, SMBWord, etc.) 12852 12853---------------------------------------- 1285401 November 2002. Summary of changes for version 20021101. 12855 12856 128571) ACPI CA Core Subsystem: 12858 12859Fixed a problem where platforms that have a GPE1 block but no GPE0 12860block were not handled correctly. This resulted in a "GPE 12861overlap" error message. GPE0 is no longer required. 12862 12863Removed code added in the previous release that inserted nodes 12864into the namespace in alphabetical order. This caused some side- 12865effects on various machines. The root cause of the problem is 12866still under investigation since in theory, the internal ordering 12867of the namespace nodes should not matter. 12868 12869 12870Enhanced error reporting for the case where a named object is not 12871found during control method execution. The full ACPI namepath 12872(name reference) of the object that was not found is displayed in 12873this case. 12874 12875Note: as a result of the overhaul of the namespace object types in 12876the previous release, the namespace nodes for the predefined 12877scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 12878instead of ACPI_TYPE_ANY. This simplifies the namespace 12879management code but may affect code that walks the namespace tree 12880looking for specific object types. 12881 12882Code and Data Size: Current core subsystem library sizes are shown 12883below. These are the code and data sizes for the acpica.lib 12884produced by the Microsoft Visual C++ 6.0 compiler, and these 12885values do not include any ACPI driver or OSPM code. The debug 12886version of the code includes the debug output trace mechanism and 12887has a much larger code and data size. Note that these values will 12888vary depending on the efficiency of the compiler and the compiler 12889options used during generation. 12890 12891 Previous Release 12892 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12893 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12894 Current Release: 12895 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12896 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12897 12898 128992) Linux 12900 12901Fixed a problem introduced in the previous release where the 12902Processor and Thermal objects were not recognized and installed in 12903/proc. This was related to the scope type change described above. 12904 12905 129063) iASL Compiler/Disassembler 12907 12908Implemented the -g option to get all of the required ACPI tables 12909from the registry and save them to files (Windows version of the 12910compiler only.) The required tables are the FADT, FACS, and DSDT. 12911 12912Added ACPI table checksum validation during table disassembly in 12913order to catch corrupted tables. 12914 12915 12916---------------------------------------- 1291722 October 2002. Summary of changes for version 20021022. 12918 129191) ACPI CA Core Subsystem: 12920 12921Implemented a restriction on the Scope operator that the target 12922must already exist in the namespace at the time the operator is 12923encountered (during table load or method execution). In other 12924words, forward references are not allowed and Scope() cannot 12925create a new object. This changes the previous behavior where the 12926interpreter would create the name if not found. This new behavior 12927correctly enables the search-to-root algorithm during namespace 12928lookup of the target name. Because of this upsearch, this fixes 12929the known Compaq _SB_.OKEC problem and makes both the AML 12930interpreter and iASL compiler compatible with other ACPI 12931implementations. 12932 12933Completed a major overhaul of the internal ACPI object types for 12934the ACPI Namespace and the associated operand objects. Many of 12935these types had become obsolete with the introduction of the two- 12936pass namespace load. This cleanup simplifies the code and makes 12937the entire namespace load mechanism much clearer and easier to 12938understand. 12939 12940Improved debug output for tracking scope opening/closing to help 12941diagnose scoping issues. The old scope name as well as the new 12942scope name are displayed. Also improved error messages for 12943problems with ASL Mutex objects and error messages for GPE 12944problems. 12945 12946Cleaned up the namespace dump code, removed obsolete code. 12947 12948All string output (for all namespace/object dumps) now uses the 12949common ACPI string output procedure which handles escapes properly 12950and does not emit non-printable characters. 12951 12952Fixed some issues with constants in the 64-bit version of the 12953local C library (utclib.c) 12954 12955 129562) Linux 12957 12958EC Driver: No longer attempts to acquire the Global Lock at 12959interrupt level. 12960 12961 129623) iASL Compiler/Disassembler 12963 12964Implemented ACPI 2.0B grammar change that disallows all Type 1 and 129652 opcodes outside of a control method. This means that the 12966"executable" operators (versus the "namespace" operators) cannot 12967be used at the table level; they can only be used within a control 12968method. 12969 12970Implemented the restriction on the Scope() operator where the 12971target must already exist in the namespace at the time the 12972operator is encountered (during ASL compilation). In other words, 12973forward references are not allowed and Scope() cannot create a new 12974object. This makes the iASL compiler compatible with other ACPI 12975implementations and makes the Scope() implementation adhere to the 12976ACPI specification. 12977 12978Fixed a problem where namepath optimization for the Alias operator 12979was optimizing the wrong path (of the two namepaths.) This caused 12980a "Missing alias link" error message. 12981 12982Fixed a problem where an "unknown reserved name" warning could be 12983incorrectly generated for names like "_SB" when the trailing 12984underscore is not used in the original ASL. 12985 12986Fixed a problem where the reserved name check did not handle 12987NamePaths with multiple NameSegs correctly. The first nameseg of 12988the NamePath was examined instead of the last NameSeg. 12989 12990 12991---------------------------------------- 12992 1299302 October 2002. Summary of changes for this release. 12994 12995 129961) ACPI CA Core Subsystem version 20021002: 12997 12998Fixed a problem where a store/copy of a string to an existing 12999string did not always set the string length properly in the String 13000object. 13001 13002Fixed a reported problem with the ToString operator where the 13003behavior was identical to the ToHexString operator instead of just 13004simply converting a raw buffer to a string data type. 13005 13006Fixed a problem where CopyObject and the other "explicit" 13007conversion operators were not updating the internal namespace node 13008type as part of the store operation. 13009 13010Fixed a memory leak during implicit source operand conversion 13011where the original object was not deleted if it was converted to a 13012new object of a different type. 13013 13014Enhanced error messages for all problems associated with namespace 13015lookups. Common procedure generates and prints the lookup name as 13016well as the formatted status. 13017 13018Completed implementation of a new design for the Alias support 13019within the namespace. The existing design did not handle the case 13020where a new object was assigned to one of the two names due to the 13021use of an explicit conversion operator, resulting in the two names 13022pointing to two different objects. The new design simply points 13023the Alias name to the original name node - not to the object. 13024This results in a level of indirection that must be handled in the 13025name resolution mechanism. 13026 13027Code and Data Size: Current core subsystem library sizes are shown 13028below. These are the code and data sizes for the acpica.lib 13029produced by the Microsoft Visual C++ 6.0 compiler, and these 13030values do not include any ACPI driver or OSPM code. The debug 13031version of the code includes the debug output trace mechanism and 13032has a larger code and data size. Note that these values will vary 13033depending on the efficiency of the compiler and the compiler 13034options used during generation. 13035 13036 Previous Release 13037 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13038 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13039 Current Release: 13040 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13041 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13042 13043 130442) Linux 13045 13046Initialize thermal driver's timer before it is used. (Knut 13047Neumann) 13048 13049Allow handling negative celsius values. (Kochi Takayoshi) 13050 13051Fix thermal management and make trip points. R/W (Pavel Machek) 13052 13053Fix /proc/acpi/sleep. (P. Christeas) 13054 13055IA64 fixes. (David Mosberger) 13056 13057Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 13058 13059Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 13060Brodowski) 13061 13062 130633) iASL Compiler/Disassembler 13064 13065Clarified some warning/error messages. 13066 13067 13068---------------------------------------- 1306918 September 2002. Summary of changes for this release. 13070 13071 130721) ACPI CA Core Subsystem version 20020918: 13073 13074Fixed a reported problem with reference chaining (via the Index() 13075and RefOf() operators) in the ObjectType() and SizeOf() operators. 13076The definition of these operators includes the dereferencing of 13077all chained references to return information on the base object. 13078 13079Fixed a problem with stores to indexed package elements - the 13080existing code would not complete the store if an "implicit 13081conversion" was not performed. In other words, if the existing 13082object (package element) was to be replaced completely, the code 13083didn't handle this case. 13084 13085Relaxed typechecking on the ASL "Scope" operator to allow the 13086target name to refer to an object of type Integer, String, or 13087Buffer, in addition to the scoping object types (Device, 13088predefined Scopes, Processor, PowerResource, and ThermalZone.) 13089This allows existing AML code that has workarounds for a bug in 13090Windows to function properly. A warning is issued, however. This 13091affects both the AML interpreter and the iASL compiler. Below is 13092an example of this type of ASL code: 13093 13094 Name(DEB,0x00) 13095 Scope(DEB) 13096 { 13097 13098Fixed some reported problems with 64-bit integer support in the 13099local implementation of C library functions (clib.c) 13100 13101 131022) Linux 13103 13104Use ACPI fix map region instead of IOAPIC region, since it is 13105undefined in non-SMP. 13106 13107Ensure that the SCI has the proper polarity and trigger, even on 13108systems that do not have an interrupt override entry in the MADT. 13109 131102.5 big driver reorganization (Pat Mochel) 13111 13112Use early table mapping code from acpitable.c (Andi Kleen) 13113 13114New blacklist entries (Andi Kleen) 13115 13116Blacklist improvements. Split blacklist code out into a separate 13117file. Move checking the blacklist to very early. Previously, we 13118would use ACPI tables, and then halfway through init, check the 13119blacklist -- too late. Now, it's early enough to completely fall- 13120back to non-ACPI. 13121 13122 131233) iASL Compiler/Disassembler version 20020918: 13124 13125Fixed a problem where the typechecking code didn't know that an 13126alias could point to a method. In other words, aliases were not 13127being dereferenced during typechecking. 13128 13129 13130---------------------------------------- 1313129 August 2002. Summary of changes for this release. 13132 131331) ACPI CA Core Subsystem Version 20020829: 13134 13135If the target of a Scope() operator already exists, it must be an 13136object type that actually opens a scope -- such as a Device, 13137Method, Scope, etc. This is a fatal runtime error. Similar error 13138check has been added to the iASL compiler also. 13139 13140Tightened up the namespace load to disallow multiple names in the 13141same scope. This previously was allowed if both objects were of 13142the same type. (i.e., a lookup was the same as entering a new 13143name). 13144 13145 131462) Linux 13147 13148Ensure that the ACPI interrupt has the proper trigger and 13149polarity. 13150 13151local_irq_disable is extraneous. (Matthew Wilcox) 13152 13153Make "acpi=off" actually do what it says, and not use the ACPI 13154interpreter *or* the tables. 13155 13156Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 13157Takayoshi) 13158 13159 131603) iASL Compiler/Disassembler Version 20020829: 13161 13162Implemented namepath optimization for name declarations. For 13163example, a declaration like "Method (\_SB_.ABCD)" would get 13164optimized to "Method (ABCD)" if the declaration is within the 13165\_SB_ scope. This optimization is in addition to the named 13166reference path optimization first released in the previous 13167version. This would seem to complete all possible optimizations 13168for namepaths within the ASL/AML. 13169 13170If the target of a Scope() operator already exists, it must be an 13171object type that actually opens a scope -- such as a Device, 13172Method, Scope, etc. 13173 13174Implemented a check and warning for unreachable code in the same 13175block below a Return() statement. 13176 13177Fixed a problem where the listing file was not generated if the 13178compiler aborted if the maximum error count was exceeded (200). 13179 13180Fixed a problem where the typechecking of method return values was 13181broken. This includes the check for a return value when the 13182method is invoked as a TermArg (a return value is expected.) 13183 13184Fixed a reported problem where EOF conditions during a quoted 13185string or comment caused a fault. 13186 13187 13188---------------------------------------- 1318915 August 2002. Summary of changes for this release. 13190 131911) ACPI CA Core Subsystem Version 20020815: 13192 13193Fixed a reported problem where a Store to a method argument that 13194contains a reference did not perform the indirect store correctly. 13195This problem was created during the conversion to the new 13196reference object model - the indirect store to a method argument 13197code was not updated to reflect the new model. 13198 13199Reworked the ACPI mode change code to better conform to ACPI 2.0, 13200handle corner cases, and improve code legibility (Kochi Takayoshi) 13201 13202Fixed a problem with the pathname parsing for the carat (^) 13203prefix. The heavy use of the carat operator by the new namepath 13204optimization in the iASL compiler uncovered a problem with the AML 13205interpreter handling of this prefix. In the case where one or 13206more carats precede a single nameseg, the nameseg was treated as 13207standalone and the search rule (to root) was inadvertently 13208applied. This could cause both the iASL compiler and the 13209interpreter to find the wrong object or to miss the error that 13210should occur if the object does not exist at that exact pathname. 13211 13212Found and fixed the problem where the HP Pavilion DSDT would not 13213load. This was a relatively minor tweak to the table loading code 13214(a problem caused by the unexpected encounter with a method 13215invocation not within a control method), but it does not solve the 13216overall issue of the execution of AML code at the table level. 13217This investigation is still ongoing. 13218 13219Code and Data Size: Current core subsystem library sizes are shown 13220below. These are the code and data sizes for the acpica.lib 13221produced by the Microsoft Visual C++ 6.0 compiler, and these 13222values do not include any ACPI driver or OSPM code. The debug 13223version of the code includes the debug output trace mechanism and 13224has a larger code and data size. Note that these values will vary 13225depending on the efficiency of the compiler and the compiler 13226options used during generation. 13227 13228 Previous Release 13229 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13230 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13231 Current Release: 13232 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13233 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13234 13235 132362) Linux 13237 13238Remove redundant slab.h include (Brad Hards) 13239 13240Fix several bugs in thermal.c (Herbert Nachtnebel) 13241 13242Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 13243 13244Change acpi_system_suspend to use updated irq functions (Pavel 13245Machek) 13246 13247Export acpi_get_firmware_table (Matthew Wilcox) 13248 13249Use proper root proc entry for ACPI (Kochi Takayoshi) 13250 13251Fix early-boot table parsing (Bjorn Helgaas) 13252 13253 132543) iASL Compiler/Disassembler 13255 13256Reworked the compiler options to make them more consistent and to 13257use two-letter options where appropriate. We were running out of 13258sensible letters. This may break some makefiles, so check the 13259current options list by invoking the compiler with no parameters. 13260 13261Completed the design and implementation of the ASL namepath 13262optimization option for the compiler. This option optimizes all 13263references to named objects to the shortest possible path. The 13264first attempt tries to utilize a single nameseg (4 characters) and 13265the "search-to-root" algorithm used by the interpreter. If that 13266cannot be used (because either the name is not in the search path 13267or there is a conflict with another object with the same name), 13268the pathname is optimized using the carat prefix (usually a 13269shorter string than specifying the entire path from the root.) 13270 13271Implemented support to obtain the DSDT from the Windows registry 13272(when the disassembly option is specified with no input file). 13273Added this code as the implementation for AcpiOsTableOverride in 13274the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 13275utility) to scan memory for the DSDT to the AcpiOsTableOverride 13276function in the DOS OSL to make the disassembler truly OS 13277independent. 13278 13279Implemented a new option to disassemble and compile in one step. 13280When used without an input filename, this option will grab the 13281DSDT from the local machine, disassemble it, and compile it in one 13282step. 13283 13284Added a warning message for invalid escapes (a backslash followed 13285by any character other than the allowable escapes). This catches 13286the quoted string error "\_SB_" (which should be "\\_SB_" ). 13287 13288Also, there are numerous instances in the ACPI specification where 13289this error occurs. 13290 13291Added a compiler option to disable all optimizations. This is 13292basically the "compatibility mode" because by using this option, 13293the AML code will come out exactly the same as other ASL 13294compilers. 13295 13296Added error messages for incorrectly ordered dependent resource 13297functions. This includes: missing EndDependentFn macro at end of 13298dependent resource list, nested dependent function macros (both 13299start and end), and missing StartDependentFn macro. These are 13300common errors that should be caught at compile time. 13301 13302Implemented _OSI support for the disassembler and compiler. _OSI 13303must be included in the namespace for proper disassembly (because 13304the disassembler must know the number of arguments.) 13305 13306Added an "optimization" message type that is optional (off by 13307default). This message is used for all optimizations - including 13308constant folding, integer optimization, and namepath optimization. 13309 13310---------------------------------------- 1331125 July 2002. Summary of changes for this release. 13312 13313 133141) ACPI CA Core Subsystem Version 20020725: 13315 13316The AML Disassembler has been enhanced to produce compilable ASL 13317code and has been integrated into the iASL compiler (see below) as 13318well as the single-step disassembly for the AML debugger and the 13319disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 13320resource templates and macros are fully supported. The 13321disassembler has been tested on over 30 different AML files, 13322producing identical AML when the resulting disassembled ASL file 13323is recompiled with the same ASL compiler. 13324 13325Modified the Resource Manager to allow zero interrupts and zero 13326dma channels during the GetCurrentResources call. This was 13327causing problems on some platforms. 13328 13329Added the AcpiOsRedirectOutput interface to the OSL to simplify 13330output redirection for the AcpiOsPrintf and AcpiOsVprintf 13331interfaces. 13332 13333Code and Data Size: Current core subsystem library sizes are shown 13334below. These are the code and data sizes for the acpica.lib 13335produced by the Microsoft Visual C++ 6.0 compiler, and these 13336values do not include any ACPI driver or OSPM code. The debug 13337version of the code includes the debug output trace mechanism and 13338has a larger code and data size. Note that these values will vary 13339depending on the efficiency of the compiler and the compiler 13340options used during generation. 13341 13342 Previous Release 13343 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13344 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13345 Current Release: 13346 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13347 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13348 13349 133502) Linux 13351 13352Fixed a panic in the EC driver (Dominik Brodowski) 13353 13354Implemented checksum of the R/XSDT itself during Linux table scan 13355(Richard Schaal) 13356 13357 133583) iASL compiler 13359 13360The AML disassembler is integrated into the compiler. The "-d" 13361option invokes the disassembler to completely disassemble an 13362input AML file, producing as output a text ASL file with the 13363extension ".dsl" (to avoid name collisions with existing .asl 13364source files.) A future enhancement will allow the disassembler 13365to obtain the BIOS DSDT from the registry under Windows. 13366 13367Fixed a problem with the VendorShort and VendorLong resource 13368descriptors where an invalid AML sequence was created. 13369 13370Implemented a fix for BufferData term in the ASL parser. It was 13371inadvertently defined twice, allowing invalid syntax to pass and 13372causing reduction conflicts. 13373 13374Fixed a problem where the Ones opcode could get converted to a 13375value of zero if "Ones" was used where a byte, word or dword value 13376was expected. The 64-bit value is now truncated to the correct 13377size with the correct value. 13378 13379 13380 13381---------------------------------------- 1338202 July 2002. Summary of changes for this release. 13383 13384 133851) ACPI CA Core Subsystem Version 20020702: 13386 13387The Table Manager code has been restructured to add several new 13388features. Tables that are not required by the core subsystem 13389(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 13390validated in any way and are returned from AcpiGetFirmwareTable if 13391requested. The AcpiOsTableOverride interface is now called for 13392each table that is loaded by the subsystem in order to allow the 13393host to override any table it chooses. Previously, only the DSDT 13394could be overridden. Added one new files, tbrsdt.c and 13395tbgetall.c. 13396 13397Fixed a problem with the conversion of internal package objects to 13398external objects (when a package is returned from a control 13399method.) The return buffer length was set to zero instead of the 13400proper length of the package object. 13401 13402Fixed a reported problem with the use of the RefOf and DeRefOf 13403operators when passing reference arguments to control methods. A 13404new type of Reference object is used internally for references 13405produced by the RefOf operator. 13406 13407Added additional error messages in the Resource Manager to explain 13408AE_BAD_DATA errors when they occur during resource parsing. 13409 13410Split the AcpiEnableSubsystem into two primitives to enable a 13411finer granularity initialization sequence. These two calls should 13412be called in this order: AcpiEnableSubsystem (flags), 13413AcpiInitializeObjects (flags). The flags parameter remains the 13414same. 13415 13416 134172) Linux 13418 13419Updated the ACPI utilities module to understand the new style of 13420fully resolved package objects that are now returned from the core 13421subsystem. This eliminates errors of the form: 13422 13423 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 13424 acpi_utils-0430 [145] acpi_evaluate_reference: 13425 Invalid element in package (not a device reference) 13426 13427The method evaluation utility uses the new buffer allocation 13428scheme instead of calling AcpiEvaluate Object twice. 13429 13430Added support for ECDT. This allows the use of the Embedded 13431 13432Controller before the namespace has been fully initialized, which 13433is necessary for ACPI 2.0 support, and for some laptops to 13434initialize properly. (Laptops using ECDT are still rare, so only 13435limited testing was performed of the added functionality.) 13436 13437Fixed memory leaks in the EC driver. 13438 13439Eliminated a brittle code structure in acpi_bus_init(). 13440 13441Eliminated the acpi_evaluate() helper function in utils.c. It is 13442no longer needed since acpi_evaluate_object can optionally 13443allocate memory for the return object. 13444 13445Implemented fix for keyboard hang when getting battery readings on 13446some systems (Stephen White) 13447 13448PCI IRQ routing update (Dominik Brodowski) 13449 13450Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 13451support 13452 13453---------------------------------------- 1345411 June 2002. Summary of changes for this release. 13455 13456 134571) ACPI CA Core Subsystem Version 20020611: 13458 13459Fixed a reported problem where constants such as Zero and One 13460appearing within _PRT packages were not handled correctly within 13461the resource manager code. Originally reported against the ASL 13462compiler because the code generator now optimizes integers to 13463their minimal AML representation (i.e. AML constants if possible.) 13464The _PRT code now handles all AML constant opcodes correctly 13465(Zero, One, Ones, Revision). 13466 13467Fixed a problem with the Concatenate operator in the AML 13468interpreter where a buffer result object was incorrectly marked as 13469not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 13470 13471All package sub-objects are now fully resolved before they are 13472returned from the external ACPI interfaces. This means that name 13473strings are resolved to object handles, and constant operators 13474(Zero, One, Ones, Revision) are resolved to Integers. 13475 13476Implemented immediate resolution of the AML Constant opcodes 13477(Zero, One, Ones, Revision) to Integer objects upon detection 13478within the AML stream. This has simplified and reduced the 13479generated code size of the subsystem by eliminating about 10 13480switch statements for these constants (which previously were 13481contained in Reference objects.) The complicating issues are that 13482the Zero opcode is used as a "placeholder" for unspecified 13483optional target operands and stores to constants are defined to be 13484no-ops. 13485 13486Code and Data Size: Current core subsystem library sizes are shown 13487below. These are the code and data sizes for the acpica.lib 13488produced by the Microsoft Visual C++ 6.0 compiler, and these 13489values do not include any ACPI driver or OSPM code. The debug 13490version of the code includes the debug output trace mechanism and 13491has a larger code and data size. Note that these values will vary 13492depending on the efficiency of the compiler and the compiler 13493options used during generation. 13494 13495 Previous Release 13496 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13497 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13498 Current Release: 13499 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13500 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13501 13502 135032) Linux 13504 13505 13506Added preliminary support for obtaining _TRA data for PCI root 13507bridges (Bjorn Helgaas). 13508 13509 135103) iASL Compiler Version X2046: 13511 13512Fixed a problem where the "_DDN" reserved name was defined to be a 13513control method with one argument. There are no arguments, and 13514_DDN does not have to be a control method. 13515 13516Fixed a problem with the Linux version of the compiler where the 13517source lines printed with error messages were the wrong lines. 13518This turned out to be the "LF versus CR/LF" difference between 13519Windows and Unix. This appears to be the longstanding issue 13520concerning listing output and error messages. 13521 13522Fixed a problem with the Linux version of compiler where opcode 13523names within error messages were wrong. This was caused by a 13524slight difference in the output of the Flex tool on Linux versus 13525Windows. 13526 13527Fixed a problem with the Linux compiler where the hex output files 13528contained some garbage data caused by an internal buffer overrun. 13529 13530 13531---------------------------------------- 1353217 May 2002. Summary of changes for this release. 13533 13534 135351) ACPI CA Core Subsystem Version 20020517: 13536 13537Implemented a workaround to an BIOS bug discovered on the HP 13538OmniBook where the FADT revision number and the table size are 13539inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 13540behavior is to fallback to using only the ACPI 1.0 fields of the 13541FADT if the table is too small to be a ACPI 2.0 table as claimed 13542by the revision number. Although this is a BIOS bug, this is a 13543case where the workaround is simple enough and with no side 13544effects, so it seemed prudent to add it. A warning message is 13545issued, however. 13546 13547Implemented minimum size checks for the fixed-length ACPI tables - 13548- the FADT and FACS, as well as consistency checks between the 13549revision number and the table size. 13550 13551Fixed a reported problem in the table override support where the 13552new table pointer was incorrectly treated as a physical address 13553instead of a logical address. 13554 13555Eliminated the use of the AE_AML_ERROR exception and replaced it 13556with more descriptive codes. 13557 13558Fixed a problem where an exception would occur if an ASL Field was 13559defined with no named Field Units underneath it (used by some 13560index fields). 13561 13562Code and Data Size: Current core subsystem library sizes are shown 13563below. These are the code and data sizes for the acpica.lib 13564produced by the Microsoft Visual C++ 6.0 compiler, and these 13565values do not include any ACPI driver or OSPM code. The debug 13566version of the code includes the debug output trace mechanism and 13567has a larger code and data size. Note that these values will vary 13568depending on the efficiency of the compiler and the compiler 13569options used during generation. 13570 13571 Previous Release 13572 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13573 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13574 Current Release: 13575 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13576 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13577 13578 13579 135802) Linux 13581 13582Much work done on ACPI init (MADT and PCI IRQ routing support). 13583(Paul D. and Dominik Brodowski) 13584 13585Fix PCI IRQ-related panic on boot (Sam Revitch) 13586 13587Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 13588 13589Fix "MHz" typo (Dominik Brodowski) 13590 13591Fix RTC year 2000 issue (Dominik Brodowski) 13592 13593Preclude multiple button proc entries (Eric Brunet) 13594 13595Moved arch-specific code out of include/platform/aclinux.h 13596 135973) iASL Compiler Version X2044: 13598 13599Implemented error checking for the string used in the EISAID macro 13600(Usually used in the definition of the _HID object.) The code now 13601strictly enforces the PnP format - exactly 7 characters, 3 13602uppercase letters and 4 hex digits. 13603 13604If a raw string is used in the definition of the _HID object 13605(instead of the EISAID macro), the string must contain all 13606alphanumeric characters (e.g., "*PNP0011" is not allowed because 13607of the asterisk.) 13608 13609Implemented checking for invalid use of ACPI reserved names for 13610most of the name creation operators (Name, Device, Event, Mutex, 13611OperationRegion, PowerResource, Processor, and ThermalZone.) 13612Previously, this check was only performed for control methods. 13613 13614Implemented an additional check on the Name operator to emit an 13615error if a reserved name that must be implemented in ASL as a 13616control method is used. We know that a reserved name must be a 13617method if it is defined with input arguments. 13618 13619The warning emitted when a namespace object reference is not found 13620during the cross reference phase has been changed into an error. 13621The "External" directive should be used for names defined in other 13622modules. 13623 13624 136254) Tools and Utilities 13626 13627The 16-bit tools (adump16 and aexec16) have been regenerated and 13628tested. 13629 13630Fixed a problem with the output of both acpidump and adump16 where 13631the indentation of closing parentheses and brackets was not 13632 13633aligned properly with the parent block. 13634 13635 13636---------------------------------------- 1363703 May 2002. Summary of changes for this release. 13638 13639 136401) ACPI CA Core Subsystem Version 20020503: 13641 13642Added support a new OSL interface that allows the host operating 13643 13644system software to override the DSDT found in the firmware - 13645AcpiOsTableOverride. With this interface, the OSL can examine the 13646version of the firmware DSDT and replace it with a different one 13647if desired. 13648 13649Added new external interfaces for accessing ACPI registers from 13650device drivers and other system software - AcpiGetRegister and 13651AcpiSetRegister. This was simply an externalization of the 13652existing AcpiHwBitRegister interfaces. 13653 13654Fixed a regression introduced in the previous build where the 13655ASL/AML CreateField operator always returned an error, 13656"destination must be a NS Node". 13657 13658Extended the maximum time (before failure) to successfully enable 13659ACPI mode to 3 seconds. 13660 13661Code and Data Size: Current core subsystem library sizes are shown 13662below. These are the code and data sizes for the acpica.lib 13663produced by the Microsoft Visual C++ 6.0 compiler, and these 13664values do not include any ACPI driver or OSPM code. The debug 13665version of the code includes the debug output trace mechanism and 13666has a larger code and data size. Note that these values will vary 13667depending on the efficiency of the compiler and the compiler 13668options used during generation. 13669 13670 Previous Release 13671 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13672 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13673 Current Release: 13674 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13675 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13676 13677 136782) Linux 13679 13680Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 13681free. While 3 out of 4 of our in-house systems work fine, the last 13682one still hangs when testing the LAPIC timer. 13683 13684Renamed many files in 2.5 kernel release to omit "acpi_" from the 13685name. 13686 13687Added warning on boot for Presario 711FR. 13688 13689Sleep improvements (Pavel Machek) 13690 13691ACPI can now be built without CONFIG_PCI enabled. 13692 13693IA64: Fixed memory map functions (JI Lee) 13694 13695 136963) iASL Compiler Version X2043: 13697 13698Added support to allow the compiler to be integrated into the MS 13699VC++ development environment for one-button compilation of single 13700files or entire projects -- with error-to-source-line mapping. 13701 13702Implemented support for compile-time constant folding for the 13703Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 13704specification. This allows the ASL writer to use expressions 13705instead of Integer/Buffer/String constants in terms that must 13706evaluate to constants at compile time and will also simplify the 13707emitted AML in any such sub-expressions that can be folded 13708(evaluated at compile-time.) This increases the size of the 13709compiler significantly because a portion of the ACPI CA AML 13710interpreter is included within the compiler in order to pre- 13711evaluate constant expressions. 13712 13713 13714Fixed a problem with the "Unicode" ASL macro that caused the 13715compiler to fault. (This macro is used in conjunction with the 13716_STR reserved name.) 13717 13718Implemented an AML opcode optimization to use the Zero, One, and 13719Ones opcodes where possible to further reduce the size of integer 13720constants and thus reduce the overall size of the generated AML 13721code. 13722 13723Implemented error checking for new reserved terms for ACPI version 137242.0A. 13725 13726Implemented the -qr option to display the current list of ACPI 13727reserved names known to the compiler. 13728 13729Implemented the -qc option to display the current list of ASL 13730operators that are allowed within constant expressions and can 13731therefore be folded at compile time if the operands are constants. 13732 13733 137344) Documentation 13735 13736Updated the Programmer's Reference for new interfaces, data types, 13737and memory allocation model options. 13738 13739Updated the iASL Compiler User Reference to apply new format and 13740add information about new features and options. 13741 13742---------------------------------------- 1374319 April 2002. Summary of changes for this release. 13744 137451) ACPI CA Core Subsystem Version 20020419: 13746 13747The source code base for the Core Subsystem has been completely 13748cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 13749versions. The Lint option files used are included in the 13750/acpi/generate/lint directory. 13751 13752Implemented enhanced status/error checking across the entire 13753Hardware manager subsystem. Any hardware errors (reported from 13754the OSL) are now bubbled up and will abort a running control 13755method. 13756 13757 13758Fixed a problem where the per-ACPI-table integer width (32 or 64) 13759was stored only with control method nodes, causing a fault when 13760non-control method code was executed during table loading. The 13761solution implemented uses a global variable to indicate table 13762width across the entire ACPI subsystem. Therefore, ACPI CA does 13763not support mixed integer widths across different ACPI tables 13764(DSDT, SSDT). 13765 13766Fixed a problem where NULL extended fields (X fields) in an ACPI 137672.0 ACPI FADT caused the table load to fail. Although the 13768existing ACPI specification is a bit fuzzy on this topic, the new 13769behavior is to fall back on a ACPI 1.0 field if the corresponding 13770ACPI 2.0 X field is zero (even though the table revision indicates 13771a full ACPI 2.0 table.) The ACPI specification will be updated to 13772clarify this issue. 13773 13774Fixed a problem with the SystemMemory operation region handler 13775where memory was always accessed byte-wise even if the AML- 13776specified access width was larger than a byte. This caused 13777problems on systems with memory-mapped I/O. Memory is now 13778accessed with the width specified. On systems that do not support 13779non-aligned transfers, a check is made to guarantee proper address 13780alignment before proceeding in order to avoid an AML-caused 13781alignment fault within the kernel. 13782 13783 13784Fixed a problem with the ExtendedIrq resource where only one byte 13785of the 4-byte Irq field was extracted. 13786 13787Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 13788function was out of date and required a rewrite. 13789 13790Code and Data Size: Current core subsystem library sizes are shown 13791below. These are the code and data sizes for the acpica.lib 13792produced by the Microsoft Visual C++ 6.0 compiler, and these 13793values do not include any ACPI driver or OSPM code. The debug 13794version of the code includes the debug output trace mechanism and 13795has a larger code and data size. Note that these values will vary 13796depending on the efficiency of the compiler and the compiler 13797options used during generation. 13798 13799 Previous Release 13800 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13801 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13802 Current Release: 13803 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13804 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13805 13806 138072) Linux 13808 13809PCI IRQ routing fixes (Dominik Brodowski) 13810 13811 138123) iASL Compiler Version X2042: 13813 13814Implemented an additional compile-time error check for a field 13815unit whose size + minimum access width would cause a run-time 13816access beyond the end-of-region. Previously, only the field size 13817itself was checked. 13818 13819The Core subsystem and iASL compiler now share a common parse 13820object in preparation for compile-time evaluation of the type 138213/4/5 ASL operators. 13822 13823 13824---------------------------------------- 13825Summary of changes for this release: 03_29_02 13826 138271) ACPI CA Core Subsystem Version 20020329: 13828 13829Implemented support for late evaluation of TermArg operands to 13830Buffer and Package objects. This allows complex expressions to be 13831used in the declarations of these object types. 13832 13833Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 138341.0, if the field was larger than 32 bits, it was returned as a 13835buffer - otherwise it was returned as an integer. In ACPI 2.0, 13836the field is returned as a buffer only if the field is larger than 1383764 bits. The TableRevision is now considered when making this 13838conversion to avoid incompatibility with existing ASL code. 13839 13840Implemented logical addressing for AcpiOsGetRootPointer. This 13841allows an RSDP with either a logical or physical address. With 13842this support, the host OS can now override all ACPI tables with 13843one logical RSDP. Includes implementation of "typed" pointer 13844support to allow a common data type for both physical and logical 13845pointers internally. This required a change to the 13846AcpiOsGetRootPointer interface. 13847 13848Implemented the use of ACPI 2.0 Generic Address Structures for all 13849GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 13850mapped I/O for these ACPI features. 13851 13852Initialization now ignores not only non-required tables (All 13853tables other than the FADT, FACS, DSDT, and SSDTs), but also does 13854not validate the table headers of unrecognized tables. 13855 13856Fixed a problem where a notify handler could only be 13857installed/removed on an object of type Device. All "notify" 13858 13859objects are now supported -- Devices, Processor, Power, and 13860Thermal. 13861 13862Removed most verbosity from the ACPI_DB_INFO debug level. Only 13863critical information is returned when this debug level is enabled. 13864 13865Code and Data Size: Current core subsystem library sizes are shown 13866below. These are the code and data sizes for the acpica.lib 13867produced by the Microsoft Visual C++ 6.0 compiler, and these 13868values do not include any ACPI driver or OSPM code. The debug 13869version of the code includes the debug output trace mechanism and 13870has a larger code and data size. Note that these values will vary 13871depending on the efficiency of the compiler and the compiler 13872options used during generation. 13873 13874 Previous Release 13875 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13876 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13877 Current Release: 13878 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13879 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13880 13881 138822) Linux: 13883 13884The processor driver (acpi_processor.c) now fully supports ACPI 138852.0-based processor performance control (e.g. Intel(R) 13886SpeedStep(TM) technology) Note that older laptops that only have 13887the Intel "applet" interface are not supported through this. The 13888'limit' and 'performance' interface (/proc) are fully functional. 13889[Note that basic policy for controlling performance state 13890transitions will be included in the next version of ospmd.] The 13891idle handler was modified to more aggressively use C2, and PIIX4 13892errata handling underwent a complete overhaul (big thanks to 13893Dominik Brodowski). 13894 13895Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 13896based devices in the ACPI namespace are now dynamically bound 13897(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 13898This allows, among other things, ACPI to resolve bus numbers for 13899subordinate PCI bridges. 13900 13901Enhanced PCI IRQ routing to get the proper bus number for _PRT 13902entries defined underneath PCI bridges. 13903 13904Added IBM 600E to bad bios list due to invalid _ADR value for 13905PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 13906 13907In the process of adding full MADT support (e.g. IOAPIC) for IA32 13908(acpi.c, mpparse.c) -- stay tuned. 13909 13910Added back visual differentiation between fixed-feature and 13911control-method buttons in dmesg. Buttons are also subtyped (e.g. 13912button/power/PWRF) to simplify button identification. 13913 13914We no longer use -Wno-unused when compiling debug. Please ignore 13915any "_THIS_MODULE defined but not used" messages. 13916 13917Can now shut down the system using "magic sysrq" key. 13918 13919 139203) iASL Compiler version 2041: 13921 13922Fixed a problem where conversion errors for hex/octal/decimal 13923constants were not reported. 13924 13925Implemented a fix for the General Register template Address field. 13926This field was 8 bits when it should be 64. 13927 13928Fixed a problem where errors/warnings were no longer being emitted 13929within the listing output file. 13930 13931Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 13932exactly 4 characters, alphanumeric only. 13933 13934 13935 13936 13937---------------------------------------- 13938Summary of changes for this release: 03_08_02 13939 13940 139411) ACPI CA Core Subsystem Version 20020308: 13942 13943Fixed a problem with AML Fields where the use of the "AccessAny" 13944keyword could cause an interpreter error due to attempting to read 13945or write beyond the end of the parent Operation Region. 13946 13947Fixed a problem in the SystemMemory Operation Region handler where 13948an attempt was made to map memory beyond the end of the region. 13949This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 13950errors on some Linux systems. 13951 13952Fixed a problem where the interpreter/namespace "search to root" 13953algorithm was not functioning for some object types. Relaxed the 13954internal restriction on the search to allow upsearches for all 13955external object types as well as most internal types. 13956 13957 139582) Linux: 13959 13960We now use safe_halt() macro versus individual calls to sti | hlt. 13961 13962Writing to the processor limit interface should now work. "echo 1" 13963will increase the limit, 2 will decrease, and 0 will reset to the 13964 13965default. 13966 13967 139683) ASL compiler: 13969 13970Fixed segfault on Linux version. 13971 13972 13973---------------------------------------- 13974Summary of changes for this release: 02_25_02 13975 139761) ACPI CA Core Subsystem: 13977 13978 13979Fixed a problem where the GPE bit masks were not initialized 13980properly, causing erratic GPE behavior. 13981 13982Implemented limited support for multiple calling conventions. The 13983code can be generated with either the VPL (variable parameter 13984list, or "C") convention, or the FPL (fixed parameter list, or 13985"Pascal") convention. The core subsystem is about 3.4% smaller 13986when generated with FPL. 13987 13988 139892) Linux 13990 13991Re-add some /proc/acpi/event functionality that was lost during 13992the rewrite 13993 13994Resolved issue with /proc events for fixed-feature buttons showing 13995up as the system device. 13996 13997Fixed checks on C2/C3 latencies to be inclusive of maximum values. 13998 13999Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 14000 14001Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 14002 14003Fixed limit interface & usage to fix bugs with passive cooling 14004hysterisis. 14005 14006Restructured PRT support. 14007 14008 14009---------------------------------------- 14010Summary of changes for this label: 02_14_02 14011 14012 140131) ACPI CA Core Subsystem: 14014 14015Implemented support in AcpiLoadTable to allow loading of FACS and 14016FADT tables. 14017 14018Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 14019been removed. All 64-bit platforms should be migrated to the ACPI 140202.0 tables. The actbl71.h header has been removed from the source 14021tree. 14022 14023All C macros defined within the subsystem have been prefixed with 14024"ACPI_" to avoid collision with other system include files. 14025 14026Removed the return value for the two AcpiOsPrint interfaces, since 14027it is never used and causes lint warnings for ignoring the return 14028value. 14029 14030Added error checking to all internal mutex acquire and release 14031calls. Although a failure from one of these interfaces is 14032probably a fatal system error, these checks will cause the 14033immediate abort of the currently executing method or interface. 14034 14035Fixed a problem where the AcpiSetCurrentResources interface could 14036fault. This was a side effect of the deployment of the new memory 14037allocation model. 14038 14039Fixed a couple of problems with the Global Lock support introduced 14040in the last major build. The "common" (1.0/2.0) internal FACS was 14041being overwritten with the FACS signature and clobbering the 14042Global Lock pointer. Also, the actual firmware FACS was being 14043unmapped after construction of the "common" FACS, preventing 14044access to the actual Global Lock field within it. The "common" 14045internal FACS is no longer installed as an actual ACPI table; it 14046is used simply as a global. 14047 14048Code and Data Size: Current core subsystem library sizes are shown 14049below. These are the code and data sizes for the acpica.lib 14050produced by the Microsoft Visual C++ 6.0 compiler, and these 14051values do not include any ACPI driver or OSPM code. The debug 14052version of the code includes the debug output trace mechanism and 14053has a larger code and data size. Note that these values will vary 14054depending on the efficiency of the compiler and the compiler 14055options used during generation. 14056 14057 Previous Release (02_07_01) 14058 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14059 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14060 Current Release: 14061 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14062 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14063 14064 140652) Linux 14066 14067Updated Linux-specific code for core macro and OSL interface 14068changes described above. 14069 14070Improved /proc/acpi/event. It now can be opened only once and has 14071proper poll functionality. 14072 14073Fixed and restructured power management (acpi_bus). 14074 14075Only create /proc "view by type" when devices of that class exist. 14076 14077Fixed "charging/discharging" bug (and others) in acpi_battery. 14078 14079Improved thermal zone code. 14080 14081 140823) ASL Compiler, version X2039: 14083 14084 14085Implemented the new compiler restriction on ASL String hex/octal 14086escapes to non-null, ASCII values. An error results if an invalid 14087value is used. (This will require an ACPI 2.0 specification 14088change.) 14089 14090AML object labels that are output to the optional C and ASM source 14091are now prefixed with both the ACPI table signature and table ID 14092to help guarantee uniqueness within a large BIOS project. 14093 14094 14095---------------------------------------- 14096Summary of changes for this label: 02_01_02 14097 140981) ACPI CA Core Subsystem: 14099 14100ACPI 2.0 support is complete in the entire Core Subsystem and the 14101ASL compiler. All new ACPI 2.0 operators are implemented and all 14102other changes for ACPI 2.0 support are complete. With 14103simultaneous code and data optimizations throughout the subsystem, 14104ACPI 2.0 support has been implemented with almost no additional 14105cost in terms of code and data size. 14106 14107Implemented a new mechanism for allocation of return buffers. If 14108the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 14109be allocated on behalf of the caller. Consolidated all return 14110buffer validation and allocation to a common procedure. Return 14111buffers will be allocated via the primary OSL allocation interface 14112since it appears that a separate pool is not needed by most users. 14113If a separate pool is required for these buffers, the caller can 14114still use the original mechanism and pre-allocate the buffer(s). 14115 14116Implemented support for string operands within the DerefOf 14117operator. 14118 14119Restructured the Hardware and Event managers to be table driven, 14120simplifying the source code and reducing the amount of generated 14121code. 14122 14123Split the common read/write low-level ACPI register bitfield 14124procedure into a separate read and write, simplifying the code 14125considerably. 14126 14127Obsoleted the AcpiOsCallocate OSL interface. This interface was 14128used only a handful of times and didn't have enough critical mass 14129for a separate interface. Replaced with a common calloc procedure 14130in the core. 14131 14132Fixed a reported problem with the GPE number mapping mechanism 14133that allows GPE1 numbers to be non-contiguous with GPE0. 14134Reorganized the GPE information and shrunk a large array that was 14135originally large enough to hold info for all possible GPEs (256) 14136to simply large enough to hold all GPEs up to the largest GPE 14137number on the machine. 14138 14139Fixed a reported problem with resource structure alignment on 64- 14140bit platforms. 14141 14142Changed the AcpiEnableEvent and AcpiDisableEvent external 14143interfaces to not require any flags for the common case of 14144enabling/disabling a GPE. 14145 14146Implemented support to allow a "Notify" on a Processor object. 14147 14148Most TBDs in comments within the source code have been resolved 14149and eliminated. 14150 14151 14152Fixed a problem in the interpreter where a standalone parent 14153prefix (^) was not handled correctly in the interpreter and 14154debugger. 14155 14156Removed obsolete and unnecessary GPE save/restore code. 14157 14158Implemented Field support in the ASL Load operator. This allows a 14159table to be loaded from a named field, in addition to loading a 14160table directly from an Operation Region. 14161 14162Implemented timeout and handle support in the external Global Lock 14163interfaces. 14164 14165Fixed a problem in the AcpiDump utility where pathnames were no 14166longer being generated correctly during the dump of named objects. 14167 14168Modified the AML debugger to give a full display of if/while 14169predicates instead of just one AML opcode at a time. (The 14170predicate can have several nested ASL statements.) The old method 14171was confusing during single stepping. 14172 14173Code and Data Size: Current core subsystem library sizes are shown 14174below. These are the code and data sizes for the acpica.lib 14175produced by the Microsoft Visual C++ 6.0 compiler, and these 14176values do not include any ACPI driver or OSPM code. The debug 14177version of the code includes the debug output trace mechanism and 14178has a larger code and data size. Note that these values will vary 14179depending on the efficiency of the compiler and the compiler 14180options used during generation. 14181 14182 Previous Release (12_18_01) 14183 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14184 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14185 Current Release: 14186 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14187 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14188 141892) Linux 14190 14191 Implemented fix for PIIX reverse throttling errata (Processor 14192driver) 14193 14194Added new Limit interface (Processor and Thermal drivers) 14195 14196New thermal policy (Thermal driver) 14197 14198Many updates to /proc 14199 14200Battery "low" event support (Battery driver) 14201 14202Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 14203 14204IA32 - IA64 initialization unification, no longer experimental 14205 14206Menuconfig options redesigned 14207 142083) ASL Compiler, version X2037: 14209 14210Implemented several new output features to simplify integration of 14211AML code into firmware: 1) Output the AML in C source code with 14212labels for each named ASL object. The original ASL source code 14213is interleaved as C comments. 2) Output the AML in ASM source code 14214with labels and interleaved ASL source. 3) Output the AML in 14215raw hex table form, in either C or ASM. 14216 14217Implemented support for optional string parameters to the 14218LoadTable operator. 14219 14220Completed support for embedded escape sequences within string 14221literals. The compiler now supports all single character escapes 14222as well as the Octal and Hex escapes. Note: the insertion of a 14223null byte into a string literal (via the hex/octal escape) causes 14224the string to be immediately terminated. A warning is issued. 14225 14226Fixed a problem where incorrect AML was generated for the case 14227where an ASL namepath consists of a single parent prefix ( 14228 14229) with no trailing name segments. 14230 14231The compiler has been successfully generated with a 64-bit C 14232compiler. 14233 14234 14235 14236 14237---------------------------------------- 14238Summary of changes for this label: 12_18_01 14239 142401) Linux 14241 14242Enhanced blacklist with reason and severity fields. Any table's 14243signature may now be used to identify a blacklisted system. 14244 14245Call _PIC control method to inform the firmware which interrupt 14246model the OS is using. Turn on any disabled link devices. 14247 14248Cleaned up busmgr /proc error handling (Andreas Dilger) 14249 14250 2) ACPI CA Core Subsystem: 14251 14252Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 14253while loop) 14254 14255Completed implementation of the ACPI 2.0 "Continue", 14256"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 14257operators. All new ACPI 2.0 operators are now implemented in both 14258the ASL compiler and the AML interpreter. The only remaining ACPI 142592.0 task is support for the String data type in the DerefOf 14260operator. Fixed a problem with AcquireMutex where the status code 14261was lost if the caller had to actually wait for the mutex. 14262 14263Increased the maximum ASL Field size from 64K bits to 4G bits. 14264 14265Completed implementation of the external Global Lock interfaces -- 14266AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 14267Handler parameters were added. 14268 14269Completed another pass at removing warnings and issues when 14270compiling with 64-bit compilers. The code now compiles cleanly 14271with the Intel 64-bit C/C++ compiler. Most notably, the pointer 14272add and subtract (diff) macros have changed considerably. 14273 14274 14275Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1427664-bit platforms, 32-bits on all others. This type is used 14277wherever memory allocation and/or the C sizeof() operator is used, 14278and affects the OSL memory allocation interfaces AcpiOsAllocate 14279and AcpiOsCallocate. 14280 14281Implemented sticky user breakpoints in the AML debugger. 14282 14283Code and Data Size: Current core subsystem library sizes are shown 14284below. These are the code and data sizes for the acpica.lib 14285produced by the Microsoft Visual C++ 6.0 compiler, and these 14286values do not include any ACPI driver or OSPM code. The debug 14287version of the code includes the debug output trace mechanism and 14288has a larger code and data size. Note that these values will vary 14289depending on the efficiency of the compiler and the compiler 14290options used during generation. 14291 14292 Previous Release (12_05_01) 14293 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14294 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14295 Current Release: 14296 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14297 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14298 14299 3) ASL Compiler, version X2034: 14300 14301Now checks for (and generates an error if detected) the use of a 14302Break or Continue statement without an enclosing While statement. 14303 14304 14305Successfully generated the compiler with the Intel 64-bit C 14306compiler. 14307 14308 ---------------------------------------- 14309Summary of changes for this label: 12_05_01 14310 14311 1) ACPI CA Core Subsystem: 14312 14313The ACPI 2.0 CopyObject operator is fully implemented. This 14314operator creates a new copy of an object (and is also used to 14315bypass the "implicit conversion" mechanism of the Store operator.) 14316 14317The ACPI 2.0 semantics for the SizeOf operator are fully 14318implemented. The change is that performing a SizeOf on a 14319reference object causes an automatic dereference of the object to 14320tha actual value before the size is evaluated. This behavior was 14321undefined in ACPI 1.0. 14322 14323The ACPI 2.0 semantics for the Extended IRQ resource descriptor 14324have been implemented. The interrupt polarity and mode are now 14325independently set. 14326 14327Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 14328appearing in Package objects were not properly converted to 14329integers when the internal Package was converted to an external 14330object (via the AcpiEvaluateObject interface.) 14331 14332Fixed a problem with the namespace object deletion mechanism for 14333objects created by control methods. There were two parts to this 14334problem: 1) Objects created during the initialization phase method 14335parse were not being deleted, and 2) The object owner ID mechanism 14336to track objects was broken. 14337 14338Fixed a problem where the use of the ASL Scope operator within a 14339control method would result in an invalid opcode exception. 14340 14341Fixed a problem introduced in the previous label where the buffer 14342length required for the _PRT structure was not being returned 14343correctly. 14344 14345Code and Data Size: Current core subsystem library sizes are shown 14346below. These are the code and data sizes for the acpica.lib 14347produced by the Microsoft Visual C++ 6.0 compiler, and these 14348values do not include any ACPI driver or OSPM code. The debug 14349version of the code includes the debug output trace mechanism and 14350has a larger code and data size. Note that these values will vary 14351depending on the efficiency of the compiler and the compiler 14352options used during generation. 14353 14354 Previous Release (11_20_01) 14355 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14356 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14357 14358 Current Release: 14359 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14360 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14361 14362 2) Linux: 14363 14364Updated all files to apply cleanly against 2.4.16. 14365 14366Added basic PCI Interrupt Routing Table (PRT) support for IA32 14367(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 14368version supports both static and dyanmic PRT entries, but dynamic 14369entries are treated as if they were static (not yet 14370reconfigurable). Architecture- specific code to use this data is 14371absent on IA32 but should be available shortly. 14372 14373Changed the initialization sequence to start the ACPI interpreter 14374(acpi_init) prior to initialization of the PCI driver (pci_init) 14375in init/main.c. This ordering is required to support PRT and 14376facilitate other (future) enhancement. A side effect is that the 14377ACPI bus driver and certain device drivers can no longer be loaded 14378as modules. 14379 14380Modified the 'make menuconfig' options to allow PCI Interrupt 14381Routing support to be included without the ACPI Bus and other 14382device drivers. 14383 14384 3) ASL Compiler, version X2033: 14385 14386Fixed some issues with the use of the new CopyObject and 14387DataTableRegion operators. Both are fully functional. 14388 14389 ---------------------------------------- 14390Summary of changes for this label: 11_20_01 14391 14392 20 November 2001. Summary of changes for this release. 14393 14394 1) ACPI CA Core Subsystem: 14395 14396Updated Index support to match ACPI 2.0 semantics. Storing a 14397Integer, String, or Buffer to an Index of a Buffer will store only 14398the least-significant byte of the source to the Indexed buffer 14399byte. Multiple writes are not performed. 14400 14401Fixed a problem where the access type used in an AccessAs ASL 14402operator was not recorded correctly into the field object. 14403 14404Fixed a problem where ASL Event objects were created in a 14405signalled state. Events are now created in an unsignalled state. 14406 14407The internal object cache is now purged after table loading and 14408initialization to reduce the use of dynamic kernel memory -- on 14409the assumption that object use is greatest during the parse phase 14410of the entire table (versus the run-time use of individual control 14411methods.) 14412 14413ACPI 2.0 variable-length packages are now fully operational. 14414 14415Code and Data Size: Code and Data optimizations have permitted new 14416feature development with an actual reduction in the library size. 14417Current core subsystem library sizes are shown below. These are 14418the code and data sizes for the acpica.lib produced by the 14419Microsoft Visual C++ 6.0 compiler, and these values do not include 14420any ACPI driver or OSPM code. The debug version of the code 14421includes the debug output trace mechanism and has a larger code 14422and data size. Note that these values will vary depending on the 14423efficiency of the compiler and the compiler options used during 14424generation. 14425 14426 Previous Release (11_09_01): 14427 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14428 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14429 14430 Current Release: 14431 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14432 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14433 14434 2) Linux: 14435 14436Enhanced the ACPI boot-time initialization code to allow the use 14437of Local APIC tables for processor enumeration on IA-32, and to 14438pave the way for a fully MPS-free boot (on SMP systems) in the 14439near future. This functionality replaces 14440arch/i386/kernel/acpitables.c, which was introduced in an earlier 144412.4.15-preX release. To enable this feature you must add 14442"acpi_boot=on" to the kernel command line -- see the help entry 14443for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 14444the works... 14445 14446Restructured the configuration options to allow boot-time table 14447parsing support without inclusion of the ACPI Interpreter (and 14448other) code. 14449 14450NOTE: This release does not include fixes for the reported events, 14451power-down, and thermal passive cooling issues (coming soon). 14452 14453 3) ASL Compiler: 14454 14455Added additional typechecking for Fields within restricted access 14456Operation Regions. All fields within EC and CMOS regions must be 14457declared with ByteAcc. All fields withing SMBus regions must be 14458declared with the BufferAcc access type. 14459 14460Fixed a problem where the listing file output of control methods 14461no longer interleaved the actual AML code with the ASL source 14462code. 14463 14464 14465 14466 14467---------------------------------------- 14468Summary of changes for this label: 11_09_01 14469 144701) ACPI CA Core Subsystem: 14471 14472Implemented ACPI 2.0-defined support for writes to fields with a 14473Buffer, String, or Integer source operand that is smaller than the 14474target field. In these cases, the source operand is zero-extended 14475to fill the target field. 14476 14477Fixed a problem where a Field starting bit offset (within the 14478parent operation region) was calculated incorrectly if the 14479 14480alignment of the field differed from the access width. This 14481affected CreateWordField, CreateDwordField, CreateQwordField, and 14482possibly other fields that use the "AccessAny" keyword. 14483 14484Fixed a problem introduced in the 11_02_01 release where indirect 14485stores through method arguments did not operate correctly. 14486 144872) Linux: 14488 14489Implemented boot-time ACPI table parsing support 14490(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 14491facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 14492legacy BIOS interfaces (e.g. MPS) for the configuration of system 14493processors, memory, and interrupts during setup_arch(). Note that 14494this patch does not include the required architecture-specific 14495changes required to apply this information -- subsequent patches 14496will be posted for both IA32 and IA64 to achieve this. 14497 14498Added low-level sleep support for IA32 platforms, courtesy of Pat 14499Mochel. This allows IA32 systems to transition to/from various 14500sleeping states (e.g. S1, S3), although the lack of a centralized 14501driver model and power-manageable drivers will prevent its 14502(successful) use on most systems. 14503 14504Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 14505submenu, unified IA32 and IA64 options, added new "Boot using ACPI 14506tables" option, etc. 14507 14508Increased the default timeout for the EC driver from 1ms to 10ms 14509(1000 cycles of 10us) to try to address AE_TIME errors during EC 14510transactions. 14511 14512 ---------------------------------------- 14513Summary of changes for this label: 11_02_01 14514 145151) ACPI CA Core Subsystem: 14516 14517ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 14518(QWordAcc keyword). All ACPI 2.0 64-bit support is now 14519implemented. 14520 14521OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 14522changes to support ACPI 2.0 Qword field access. Read/Write 14523PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 14524accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 14525the value parameter for the address space handler interface is now 14526an ACPI_INTEGER. OSL implementations of these interfaces must now 14527handle the case where the Width parameter is 64. 14528 14529Index Fields: Fixed a problem where unaligned bit assembly and 14530disassembly for IndexFields was not supported correctly. 14531 14532Index and Bank Fields: Nested Index and Bank Fields are now 14533supported. During field access, a check is performed to ensure 14534that the value written to an Index or Bank register is not out of 14535the range of the register. The Index (or Bank) register is 14536written before each access to the field data. Future support will 14537include allowing individual IndexFields to be wider than the 14538DataRegister width. 14539 14540Fields: Fixed a problem where the AML interpreter was incorrectly 14541attempting to write beyond the end of a Field/OpRegion. This was 14542a boundary case that occurred when a DWORD field was written to a 14543BYTE access OpRegion, forcing multiple writes and causing the 14544interpreter to write one datum too many. 14545 14546Fields: Fixed a problem with Field/OpRegion access where the 14547starting bit address of a field was incorrectly calculated if the 14548current access type was wider than a byte (WordAcc, DwordAcc, or 14549QwordAcc). 14550 14551Fields: Fixed a problem where forward references to individual 14552FieldUnits (individual Field names within a Field definition) were 14553not resolved during the AML table load. 14554 14555Fields: Fixed a problem where forward references from a Field 14556definition to the parent Operation Region definition were not 14557resolved during the AML table load. 14558 14559Fields: Duplicate FieldUnit names within a scope are now detected 14560during AML table load. 14561 14562Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 14563returned an incorrect name for the root node. 14564 14565Code and Data Size: Code and Data optimizations have permitted new 14566feature development with an actual reduction in the library size. 14567Current core subsystem library sizes are shown below. These are 14568the code and data sizes for the acpica.lib produced by the 14569Microsoft Visual C++ 6.0 compiler, and these values do not include 14570any ACPI driver or OSPM code. The debug version of the code 14571includes the debug output trace mechanism and has a larger code 14572and data size. Note that these values will vary depending on the 14573efficiency of the compiler and the compiler options used during 14574generation. 14575 14576 Previous Release (10_18_01): 14577 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14578 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14579 14580 Current Release: 14581 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14582 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14583 14584 2) Linux: 14585 14586Improved /proc processor output (Pavel Machek) Re-added 14587MODULE_LICENSE("GPL") to all modules. 14588 14589 3) ASL Compiler version X2030: 14590 14591Duplicate FieldUnit names within a scope are now detected and 14592flagged as errors. 14593 14594 4) Documentation: 14595 14596Programmer Reference updated to reflect OSL and address space 14597handler interface changes described above. 14598 14599---------------------------------------- 14600Summary of changes for this label: 10_18_01 14601 14602ACPI CA Core Subsystem: 14603 14604Fixed a problem with the internal object reference count mechanism 14605that occasionally caused premature object deletion. This resolves 14606all of the outstanding problem reports where an object is deleted 14607in the middle of an interpreter evaluation. Although this problem 14608only showed up in rather obscure cases, the solution to the 14609problem involved an adjustment of all reference counts involving 14610objects attached to namespace nodes. 14611 14612Fixed a problem with Field support in the interpreter where 14613writing to an aligned field whose length is an exact multiple (2 14614or greater) of the field access granularity would cause an attempt 14615to write beyond the end of the field. 14616 14617The top level AML opcode execution functions within the 14618interpreter have been renamed with a more meaningful and 14619consistent naming convention. The modules exmonad.c and 14620exdyadic.c were eliminated. New modules are exoparg1.c, 14621exoparg2.c, exoparg3.c, and exoparg6.c. 14622 14623Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 14624 14625Fixed a problem where the AML debugger was causing some internal 14626objects to not be deleted during subsystem termination. 14627 14628Fixed a problem with the external AcpiEvaluateObject interface 14629where the subsystem would fault if the named object to be 14630evaluated refered to a constant such as Zero, Ones, etc. 14631 14632Fixed a problem with IndexFields and BankFields where the 14633subsystem would fault if the index, data, or bank registers were 14634not defined in the same scope as the field itself. 14635 14636Added printf format string checking for compilers that support 14637this feature. Corrected more than 50 instances of issues with 14638format specifiers within invocations of ACPI_DEBUG_PRINT 14639throughout the core subsystem code. 14640 14641The ASL "Revision" operator now returns the ACPI support level 14642implemented in the core - the value "2" since the ACPI 2.0 support 14643is more than 50% implemented. 14644 14645Enhanced the output of the AML debugger "dump namespace" command 14646to output in a more human-readable form. 14647 14648Current core subsystem library code sizes are shown below. These 14649 14650are the code and data sizes for the acpica.lib produced by the 14651Microsoft Visual C++ 6.0 compiler, and these values do not include 14652any ACPI driver or OSPM code. The debug version of the code 14653includes the full debug trace mechanism -- leading to a much 14654 14655larger code and data size. Note that these values will vary 14656depending on the efficiency of the compiler and the compiler 14657options used during generation. 14658 14659 Previous Label (09_20_01): 14660 Non-Debug Version: 65K Code, 5K Data, 70K Total 14661 Debug Version: 138K Code, 58K Data, 196K Total 14662 14663 This Label: 14664 14665 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14666 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14667 14668Linux: 14669 14670Implemented a "Bad BIOS Blacklist" to track machines that have 14671known ASL/AML problems. 14672 14673Enhanced the /proc interface for the thermal zone driver and added 14674support for _HOT (the critical suspend trip point). The 'info' 14675file now includes threshold/policy information, and allows setting 14676of _SCP (cooling preference) and _TZP (polling frequency) values 14677to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 14678frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 14679preference to the passive/quiet mode (if supported by the ASL). 14680 14681Implemented a workaround for a gcc bug that resuted in an OOPs 14682when loading the control method battery driver. 14683 14684 ---------------------------------------- 14685Summary of changes for this label: 09_20_01 14686 14687 ACPI CA Core Subsystem: 14688 14689The AcpiEnableEvent and AcpiDisableEvent interfaces have been 14690modified to allow individual GPE levels to be flagged as wake- 14691enabled (i.e., these GPEs are to remain enabled when the platform 14692sleeps.) 14693 14694The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 14695support wake-enabled GPEs. This means that upon entering the 14696sleep state, all GPEs that are not wake-enabled are disabled. 14697When leaving the sleep state, these GPEs are reenabled. 14698 14699A local double-precision divide/modulo module has been added to 14700enhance portability to OS kernels where a 64-bit math library is 14701not available. The new module is "utmath.c". 14702 14703Several optimizations have been made to reduce the use of CPU 14704stack. Originally over 2K, the maximum stack usage is now below 147052K at 1860 bytes (1.82k) 14706 14707Fixed a problem with the AcpiGetFirmwareTable interface where the 14708root table pointer was not mapped into a logical address properly. 14709 14710Fixed a problem where a NULL pointer was being dereferenced in the 14711interpreter code for the ASL Notify operator. 14712 14713Fixed a problem where the use of the ASL Revision operator 14714returned an error. This operator now returns the current version 14715of the ACPI CA core subsystem. 14716 14717Fixed a problem where objects passed as control method parameters 14718to AcpiEvaluateObject were always deleted at method termination. 14719However, these objects may end up being stored into the namespace 14720by the called method. The object reference count mechanism was 14721applied to these objects instead of a force delete. 14722 14723Fixed a problem where static strings or buffers (contained in the 14724AML code) that are declared as package elements within the ASL 14725code could cause a fault because the interpreter would attempt to 14726delete them. These objects are now marked with the "static 14727object" flag to prevent any attempt to delete them. 14728 14729Implemented an interpreter optimization to use operands directly 14730from the state object instead of extracting the operands to local 14731variables. This reduces stack use and code size, and improves 14732performance. 14733 14734The module exxface.c was eliminated as it was an unnecessary extra 14735layer of code. 14736 14737Current core subsystem library code sizes are shown below. These 14738are the code and data sizes for the acpica.lib produced by the 14739Microsoft Visual C++ 6.0 compiler, and these values do not include 14740any ACPI driver or OSPM code. The debug version of the code 14741includes the full debug trace mechanism -- leading to a much 14742larger code and data size. Note that these values will vary 14743depending on the efficiency of the compiler and the compiler 14744options used during generation. 14745 14746 Non-Debug Version: 65K Code, 5K Data, 70K Total 14747(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 14748Total (Previously 195K) 14749 14750Linux: 14751 14752Support for ACPI 2.0 64-bit integers has been added. All ACPI 14753Integer objects are now 64 bits wide 14754 14755All Acpi data types and structures are now in lower case. Only 14756Acpi macros are upper case for differentiation. 14757 14758 Documentation: 14759 14760Changes to the external interfaces as described above. 14761 14762 ---------------------------------------- 14763Summary of changes for this label: 08_31_01 14764 14765 ACPI CA Core Subsystem: 14766 14767A bug with interpreter implementation of the ASL Divide operator 14768was found and fixed. The implicit function return value (not the 14769explicit store operands) was returning the remainder instead of 14770the quotient. This was a longstanding bug and it fixes several 14771known outstanding issues on various platforms. 14772 14773The ACPI_DEBUG_PRINT and function trace entry/exit macros have 14774been further optimized for size. There are 700 invocations of the 14775DEBUG_PRINT macro alone, so each optimization reduces the size of 14776the debug version of the subsystem significantly. 14777 14778A stack trace mechanism has been implemented. The maximum stack 14779usage is about 2K on 32-bit platforms. The debugger command "stat 14780stack" will display the current maximum stack usage. 14781 14782All public symbols and global variables within the subsystem are 14783now prefixed with the string "Acpi". This keeps all of the 14784symbols grouped together in a kernel map, and avoids conflicts 14785with other kernel subsystems. 14786 14787Most of the internal fixed lookup tables have been moved into the 14788code segment via the const operator. 14789 14790Several enhancements have been made to the interpreter to both 14791reduce the code size and improve performance. 14792 14793Current core subsystem library code sizes are shown below. These 14794are the code and data sizes for the acpica.lib produced by the 14795Microsoft Visual C++ 6.0 compiler, and these values do not include 14796any ACPI driver or OSPM code. The debug version of the code 14797includes the full debug trace mechanism which contains over 700 14798invocations of the DEBUG_PRINT macro, 500 function entry macro 14799invocations, and over 900 function exit macro invocations -- 14800leading to a much larger code and data size. Note that these 14801values will vary depending on the efficiency of the compiler and 14802the compiler options used during generation. 14803 14804 Non-Debug Version: 64K Code, 5K Data, 69K Total 14805Debug Version: 137K Code, 58K Data, 195K Total 14806 14807 Linux: 14808 14809Implemented wbinvd() macro, pending a kernel-wide definition. 14810 14811Fixed /proc/acpi/event to handle poll() and short reads. 14812 14813 ASL Compiler, version X2026: 14814 14815Fixed a problem introduced in the previous label where the AML 14816 14817code emitted for package objects produced packages with zero 14818length. 14819 14820 ---------------------------------------- 14821Summary of changes for this label: 08_16_01 14822 14823ACPI CA Core Subsystem: 14824 14825The following ACPI 2.0 ASL operators have been implemented in the 14826AML interpreter (These are already supported by the Intel ASL 14827compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 14828ToBuffer. Support for 64-bit AML constants is implemented in the 14829AML parser, debugger, and disassembler. 14830 14831The internal memory tracking mechanism (leak detection code) has 14832been upgraded to reduce the memory overhead (a separate tracking 14833block is no longer allocated for each memory allocation), and now 14834supports all of the internal object caches. 14835 14836The data structures and code for the internal object caches have 14837been coelesced and optimized so that there is a single cache and 14838memory list data structure and a single group of functions that 14839implement generic cache management. This has reduced the code 14840size in both the debug and release versions of the subsystem. 14841 14842The DEBUG_PRINT macro(s) have been optimized for size and replaced 14843by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 14844different, because it generates a single call to an internal 14845function. This results in a savings of about 90 bytes per 14846invocation, resulting in an overall code and data savings of about 1484716% in the debug version of the subsystem. 14848 14849 Linux: 14850 14851Fixed C3 disk corruption problems and re-enabled C3 on supporting 14852machines. 14853 14854Integrated low-level sleep code by Patrick Mochel. 14855 14856Further tweaked source code Linuxization. 14857 14858Other minor fixes. 14859 14860 ASL Compiler: 14861 14862Support for ACPI 2.0 variable length packages is fixed/completed. 14863 14864Fixed a problem where the optional length parameter for the ACPI 148652.0 ToString operator. 14866 14867Fixed multiple extraneous error messages when a syntax error is 14868detected within the declaration line of a control method. 14869 14870 ---------------------------------------- 14871Summary of changes for this label: 07_17_01 14872 14873ACPI CA Core Subsystem: 14874 14875Added a new interface named AcpiGetFirmwareTable to obtain any 14876ACPI table via the ACPI signature. The interface can be called at 14877any time during kernel initialization, even before the kernel 14878virtual memory manager is initialized and paging is enabled. This 14879allows kernel subsystems to obtain ACPI tables very early, even 14880before the ACPI CA subsystem is initialized. 14881 14882Fixed a problem where Fields defined with the AnyAcc attribute 14883could be resolved to the incorrect address under the following 14884conditions: 1) the field width is larger than 8 bits and 2) the 14885parent operation region is not defined on a DWORD boundary. 14886 14887Fixed a problem where the interpreter is not being locked during 14888namespace initialization (during execution of the _INI control 14889methods), causing an error when an attempt is made to release it 14890later. 14891 14892ACPI 2.0 support in the AML Interpreter has begun and will be 14893ongoing throughout the rest of this year. In this label, The Mod 14894operator is implemented. 14895 14896Added a new data type to contain full PCI addresses named 14897ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 14898and Function values. 14899 14900 Linux: 14901 14902Enhanced the Linux version of the source code to change most 14903capitalized ACPI type names to lowercase. For example, all 14904instances of ACPI_STATUS are changed to acpi_status. This will 14905result in a large diff, but the change is strictly cosmetic and 14906aligns the CA code closer to the Linux coding standard. 14907 14908OSL Interfaces: 14909 14910The interfaces to the PCI configuration space have been changed to 14911add the PCI Segment number and to split the single 32-bit combined 14912DeviceFunction field into two 16-bit fields. This was 14913accomplished by moving the four values that define an address in 14914PCI configuration space (segment, bus, device, and function) to 14915the new ACPI_PCI_ID structure. 14916 14917The changes to the PCI configuration space interfaces led to a 14918reexamination of the complete set of address space access 14919interfaces for PCI, I/O, and Memory. The previously existing 18 14920interfaces have proven difficult to maintain (any small change 14921must be propagated across at least 6 interfaces) and do not easily 14922allow for future expansion to 64 bits if necessary. Also, on some 14923systems, it would not be appropriate to demultiplex the access 14924width (8, 16, 32,or 64) before calling the OSL if the 14925corresponding native OS interfaces contain a similar access width 14926parameter. For these reasons, the 18 address space interfaces 14927have been replaced by these 6 new ones: 14928 14929AcpiOsReadPciConfiguration 14930AcpiOsWritePciConfiguration 14931AcpiOsReadMemory 14932AcpiOsWriteMemory 14933AcpiOsReadPort 14934AcpiOsWritePort 14935 14936Added a new interface named AcpiOsGetRootPointer to allow the OSL 14937to perform the platform and/or OS-specific actions necessary to 14938obtain the ACPI RSDP table pointer. On IA-32 platforms, this 14939interface will simply call down to the CA core to perform the low- 14940memory search for the table. On IA-64, the RSDP is obtained from 14941EFI. Migrating this interface to the OSL allows the CA core to 14942 14943remain OS and platform independent. 14944 14945Added a new interface named AcpiOsSignal to provide a generic 14946"function code and pointer" interface for various miscellaneous 14947signals and notifications that must be made to the host OS. The 14948first such signals are intended to support the ASL Fatal and 14949Breakpoint operators. In the latter case, the AcpiOsBreakpoint 14950interface has been obsoleted. 14951 14952The definition of the AcpiFormatException interface has been 14953changed to simplify its use. The caller no longer must supply a 14954buffer to the call; A pointer to a const string is now returned 14955directly. This allows the call to be easily used in printf 14956statements, etc. since the caller does not have to manage a local 14957buffer. 14958 14959 14960 ASL Compiler, Version X2025: 14961 14962The ACPI 2.0 Switch/Case/Default operators have been implemented 14963and are fully functional. They will work with all ACPI 1.0 14964interpreters, since the operators are simply translated to If/Else 14965pairs. 14966 14967The ACPI 2.0 ElseIf operator is implemented and will also work 14968with 1.0 interpreters, for the same reason. 14969 14970Implemented support for ACPI 2.0 variable-length packages. These 14971packages have a separate opcode, and their size is determined by 14972the interpreter at run-time. 14973 14974Documentation The ACPI CA Programmer Reference has been updated to 14975reflect the new interfaces and changes to existing interfaces. 14976 14977 ------------------------------------------ 14978Summary of changes for this label: 06_15_01 14979 14980 ACPI CA Core Subsystem: 14981 14982Fixed a problem where a DWORD-accessed field within a Buffer 14983object would get its byte address inadvertently rounded down to 14984the nearest DWORD. Buffers are always Byte-accessible. 14985 14986 ASL Compiler, version X2024: 14987 14988Fixed a problem where the Switch() operator would either fault or 14989hang the compiler. Note however, that the AML code for this ACPI 149902.0 operator is not yet implemented. 14991 14992Compiler uses the new AcpiOsGetTimer interface to obtain compile 14993timings. 14994 14995Implementation of the CreateField operator automatically converts 14996a reference to a named field within a resource descriptor from a 14997byte offset to a bit offset if required. 14998 14999Added some missing named fields from the resource descriptor 15000support. These are the names that are automatically created by the 15001compiler to reference fields within a descriptor. They are only 15002valid at compile time and are not passed through to the AML 15003interpreter. 15004 15005Resource descriptor named fields are now typed as Integers and 15006subject to compile-time typechecking when used in expressions. 15007 15008 ------------------------------------------ 15009Summary of changes for this label: 05_18_01 15010 15011 ACPI CA Core Subsystem: 15012 15013Fixed a couple of problems in the Field support code where bits 15014from adjacent fields could be returned along with the proper field 15015bits. Restructured the field support code to improve performance, 15016readability and maintainability. 15017 15018New DEBUG_PRINTP macro automatically inserts the procedure name 15019into the output, saving hundreds of copies of procedure name 15020strings within the source, shrinking the memory footprint of the 15021debug version of the core subsystem. 15022 15023 Source Code Structure: 15024 15025The source code directory tree was restructured to reflect the 15026current organization of the component architecture. Some files 15027and directories have been moved and/or renamed. 15028 15029 Linux: 15030 15031Fixed leaking kacpidpc processes. 15032 15033Fixed queueing event data even when /proc/acpi/event is not 15034opened. 15035 15036 ASL Compiler, version X2020: 15037 15038Memory allocation performance enhancement - over 24X compile time 15039improvement on large ASL files. Parse nodes and namestring 15040buffers are now allocated from a large internal compiler buffer. 15041 15042The temporary .SRC file is deleted unless the "-s" option is 15043specified 15044 15045The "-d" debug output option now sends all output to the .DBG file 15046instead of the console. 15047 15048"External" second parameter is now optional 15049 15050"ElseIf" syntax now properly allows the predicate 15051 15052Last operand to "Load" now recognized as a Target operand 15053 15054Debug object can now be used anywhere as a normal object. 15055 15056ResourceTemplate now returns an object of type BUFFER 15057 15058EISAID now returns an object of type INTEGER 15059 15060"Index" now works with a STRING operand 15061 15062"LoadTable" now accepts optional parameters 15063 15064"ToString" length parameter is now optional 15065 15066"Interrupt (ResourceType," parse error fixed. 15067 15068"Register" with a user-defined region space parse error fixed 15069 15070Escaped backslash at the end of a string ("\\") scan/parse error 15071fixed 15072 15073"Revision" is now an object of type INTEGER. 15074 15075 15076 15077------------------------------------------ 15078Summary of changes for this label: 05_02_01 15079 15080Linux: 15081 15082/proc/acpi/event now blocks properly. 15083 15084Removed /proc/sys/acpi. You can still dump your DSDT from 15085/proc/acpi/dsdt. 15086 15087 ACPI CA Core Subsystem: 15088 15089Fixed a problem introduced in the previous label where some of the 15090"small" resource descriptor types were not recognized. 15091 15092Improved error messages for the case where an ASL Field is outside 15093the range of the parent operation region. 15094 15095 ASL Compiler, version X2018: 15096 15097 15098Added error detection for ASL Fields that extend beyond the length 15099of the parent operation region (only if the length of the region 15100is known at compile time.) This includes fields that have a 15101minimum access width that is smaller than the parent region, and 15102individual field units that are partially or entirely beyond the 15103extent of the parent. 15104 15105 15106 15107------------------------------------------ 15108Summary of changes for this label: 04_27_01 15109 15110 ACPI CA Core Subsystem: 15111 15112Fixed a problem where the namespace mutex could be released at the 15113wrong time during execution of AcpiRemoveAddressSpaceHandler. 15114 15115Added optional thread ID output for debug traces, to simplify 15116debugging of multiple threads. Added context switch notification 15117when the debug code realizes that a different thread is now 15118executing ACPI code. 15119 15120Some additional external data types have been prefixed with the 15121string "ACPI_" for consistency. This may effect existing code. 15122The data types affected are the external callback typedefs - e.g., 15123 15124WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 15125 15126 Linux: 15127 15128Fixed an issue with the OSL semaphore implementation where a 15129thread was waking up with an error from receiving a SIGCHLD 15130signal. 15131 15132Linux version of ACPI CA now uses the system C library for string 15133manipulation routines instead of a local implementation. 15134 15135Cleaned up comments and removed TBDs. 15136 15137 ASL Compiler, version X2017: 15138 15139Enhanced error detection and reporting for all file I/O 15140operations. 15141 15142 Documentation: 15143 15144Programmer Reference updated to version 1.06. 15145 15146 15147 15148------------------------------------------ 15149Summary of changes for this label: 04_13_01 15150 15151 ACPI CA Core Subsystem: 15152 15153Restructured support for BufferFields and RegionFields. 15154BankFields support is now fully operational. All known 32-bit 15155limitations on field sizes have been removed. Both BufferFields 15156and (Operation) RegionFields are now supported by the same field 15157management code. 15158 15159Resource support now supports QWORD address and IO resources. The 1516016/32/64 bit address structures and the Extended IRQ structure 15161have been changed to properly handle Source Resource strings. 15162 15163A ThreadId of -1 is now used to indicate a "mutex not acquired" 15164condition internally and must never be returned by AcpiOsThreadId. 15165This reserved value was changed from 0 since Unix systems allow a 15166thread ID of 0. 15167 15168Linux: 15169 15170Driver code reorganized to enhance portability 15171 15172Added a kernel configuration option to control ACPI_DEBUG 15173 15174Fixed the EC driver to honor _GLK. 15175 15176ASL Compiler, version X2016: 15177 15178Fixed support for the "FixedHw" keyword. Previously, the FixedHw 15179address space was set to 0, not 0x7f as it should be. 15180 15181 ------------------------------------------ 15182Summary of changes for this label: 03_13_01 15183 15184 ACPI CA Core Subsystem: 15185 15186During ACPI initialization, the _SB_._INI method is now run if 15187present. 15188 15189Notify handler fix - notifies are deferred until the parent method 15190completes execution. This fixes the "mutex already acquired" 15191issue seen occasionally. 15192 15193Part of the "implicit conversion" rules in ACPI 2.0 have been 15194found to cause compatibility problems with existing ASL/AML. The 15195convert "result-to-target-type" implementation has been removed 15196for stores to method Args and Locals. Source operand conversion 15197is still fully implemented. Possible changes to ACPI 2.0 15198specification pending. 15199 15200Fix to AcpiRsCalculatePciRoutingTableLength to return correct 15201length. 15202 15203Fix for compiler warnings for 64-bit compiles. 15204 15205 Linux: 15206 15207/proc output aligned for easier parsing. 15208 15209Release-version compile problem fixed. 15210 15211New kernel configuration options documented in Configure.help. 15212 15213IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 15214context" message. 15215 15216 OSPM: 15217 15218Power resource driver integrated with bus manager. 15219 15220Fixed kernel fault during active cooling for thermal zones. 15221 15222Source Code: 15223 15224The source code tree has been restructured. 15225 15226 15227 15228------------------------------------------ 15229Summary of changes for this label: 03_02_01 15230 15231 Linux OS Services Layer (OSL): 15232 15233Major revision of all Linux-specific code. 15234 15235Modularized all ACPI-specific drivers. 15236 15237Added new thermal zone and power resource drivers. 15238 15239Revamped /proc interface (new functionality is under /proc/acpi). 15240 15241New kernel configuration options. 15242 15243 Linux known issues: 15244 15245New kernel configuration options not documented in Configure.help 15246yet. 15247 15248 15249Module dependencies not currently implemented. If used, they 15250should be loaded in this order: busmgr, power, ec, system, 15251processor, battery, ac_adapter, button, thermal. 15252 15253Modules will not load if CONFIG_MODVERSION is set. 15254 15255IBM 600E - entering S5 may reboot instead of shutting down. 15256 15257IBM 600E - Sleep button may generate "Invalid <NULL> context" 15258message. 15259 15260Some systems may fail with "execution mutex already acquired" 15261message. 15262 15263 ACPI CA Core Subsystem: 15264 15265Added a new OSL Interface, AcpiOsGetThreadId. This was required 15266for the deadlock detection code. Defined to return a non-zero, 32- 15267bit thread ID for the currently executing thread. May be a non- 15268zero constant integer on single-thread systems. 15269 15270Implemented deadlock detection for internal subsystem mutexes. We 15271may add conditional compilation for this code (debug only) later. 15272 15273ASL/AML Mutex object semantics are now fully supported. This 15274includes multiple acquires/releases by owner and support for the 15275 15276Mutex SyncLevel parameter. 15277 15278A new "Force Release" mechanism automatically frees all ASL 15279Mutexes that have been acquired but not released when a thread 15280exits the interpreter. This forces conformance to the ACPI spec 15281("All mutexes must be released when an invocation exits") and 15282prevents deadlocked ASL threads. This mechanism can be expanded 15283(later) to monitor other resource acquisitions if OEM ASL code 15284continues to misbehave (which it will). 15285 15286Several new ACPI exception codes have been added for the Mutex 15287support. 15288 15289Recursive method calls are now allowed and supported (the ACPI 15290spec does in fact allow recursive method calls.) The number of 15291recursive calls is subject to the restrictions imposed by the 15292SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 15293parameter. 15294 15295Implemented support for the SyncLevel parameter for control 15296methods (ACPI 2.0 feature) 15297 15298Fixed a deadlock problem when multiple threads attempted to use 15299the interpreter. 15300 15301Fixed a problem where the string length of a String package 15302element was not always set in a package returned from 15303AcpiEvaluateObject. 15304 15305Fixed a problem where the length of a String package element was 15306not always included in the length of the overall package returned 15307from AcpiEvaluateObject. 15308 15309Added external interfaces (Acpi*) to the ACPI debug memory 15310manager. This manager keeps a list of all outstanding 15311allocations, and can therefore detect memory leaks and attempts to 15312free memory blocks more than once. Useful for code such as the 15313power manager, etc. May not be appropriate for device drivers. 15314Performance with the debug code enabled is slow. 15315 15316The ACPI Global Lock is now an optional hardware element. 15317 15318 ASL Compiler Version X2015: 15319 15320Integrated changes to allow the compiler to be generated on 15321multiple platforms. 15322 15323Linux makefile added to generate the compiler on Linux 15324 15325 Source Code: 15326 15327All platform-specific headers have been moved to their own 15328subdirectory, Include/Platform. 15329 15330New source file added, Interpreter/ammutex.c 15331 15332New header file, Include/acstruct.h 15333 15334 Documentation: 15335 15336The programmer reference has been updated for the following new 15337interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 15338 15339 ------------------------------------------ 15340Summary of changes for this label: 02_08_01 15341 15342Core ACPI CA Subsystem: Fixed a problem where an error was 15343incorrectly returned if the return resource buffer was larger than 15344the actual data (in the resource interfaces). 15345 15346References to named objects within packages are resolved to the 15347 15348full pathname string before packages are returned directly (via 15349the AcpiEvaluateObject interface) or indirectly via the resource 15350interfaces. 15351 15352Linux OS Services Layer (OSL): 15353 15354Improved /proc battery interface. 15355 15356 15357Added C-state debugging output and other miscellaneous fixes. 15358 15359ASL Compiler Version X2014: 15360 15361All defined method arguments can now be used as local variables, 15362including the ones that are not actually passed in as parameters. 15363The compiler tracks initialization of the arguments and issues an 15364exception if they are used without prior assignment (just like 15365locals). 15366 15367The -o option now specifies a filename prefix that is used for all 15368output files, including the AML output file. Otherwise, the 15369default behavior is as follows: 1) the AML goes to the file 15370specified in the DSDT. 2) all other output files use the input 15371source filename as the base. 15372 15373 ------------------------------------------ 15374Summary of changes for this label: 01_25_01 15375 15376Core ACPI CA Subsystem: Restructured the implementation of object 15377store support within the interpreter. This includes support for 15378the Store operator as well as any ASL operators that include a 15379target operand. 15380 15381Partially implemented support for Implicit Result-to-Target 15382conversion. This is when a result object is converted on the fly 15383to the type of an existing target object. Completion of this 15384support is pending further analysis of the ACPI specification 15385concerning this matter. 15386 15387CPU-specific code has been removed from the subsystem (hardware 15388directory). 15389 15390New Power Management Timer functions added 15391 15392Linux OS Services Layer (OSL): Moved system state transition code 15393to the core, fixed it, and modified Linux OSL accordingly. 15394 15395Fixed C2 and C3 latency calculations. 15396 15397 15398We no longer use the compilation date for the version message on 15399initialization, but retrieve the version from AcpiGetSystemInfo(). 15400 15401Incorporated for fix Sony VAIO machines. 15402 15403Documentation: The Programmer Reference has been updated and 15404reformatted. 15405 15406 15407ASL Compiler: Version X2013: Fixed a problem where the line 15408numbering and error reporting could get out of sync in the 15409presence of multiple include files. 15410 15411 ------------------------------------------ 15412Summary of changes for this label: 01_15_01 15413 15414Core ACPI CA Subsystem: 15415 15416Implemented support for type conversions in the execution of the 15417ASL Concatenate operator (The second operand is converted to 15418match the type of the first operand before concatenation.) 15419 15420Support for implicit source operand conversion is partially 15421implemented. The ASL source operand types Integer, Buffer, and 15422String are freely interchangeable for most ASL operators and are 15423converted by the interpreter on the fly as required. Implicit 15424Target operand conversion (where the result is converted to the 15425target type before storing) is not yet implemented. 15426 15427Support for 32-bit and 64-bit BCD integers is implemented. 15428 15429Problem fixed where a field read on an aligned field could cause a 15430read past the end of the field. 15431 15432New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 15433does not return a value, but the caller expects one. (The ASL 15434compiler flags this as a warning.) 15435 15436ASL Compiler: 15437 15438Version X2011: 154391. Static typechecking of all operands is implemented. This 15440prevents the use of invalid objects (such as using a Package where 15441an Integer is required) at compile time instead of at interpreter 15442run-time. 154432. The ASL source line is printed with ALL errors and warnings. 154443. Bug fix for source EOF without final linefeed. 154454. Debug option is split into a parse trace and a namespace trace. 154465. Namespace output option (-n) includes initial values for 15447integers and strings. 154486. Parse-only option added for quick syntax checking. 154497. Compiler checks for duplicate ACPI name declarations 15450 15451Version X2012: 154521. Relaxed typechecking to allow interchangeability between 15453strings, integers, and buffers. These types are now converted by 15454the interpreter at runtime. 154552. Compiler reports time taken by each internal subsystem in the 15456debug output file. 15457 15458 15459 ------------------------------------------ 15460Summary of changes for this label: 12_14_00 15461 15462ASL Compiler: 15463 15464This is the first official release of the compiler. Since the 15465compiler requires elements of the Core Subsystem, this label 15466synchronizes everything. 15467 15468------------------------------------------ 15469Summary of changes for this label: 12_08_00 15470 15471 15472Fixed a problem where named references within the ASL definition 15473of both OperationRegions and CreateXXXFields did not work 15474properly. The symptom was an AE_AML_OPERAND_TYPE during 15475initialization of the region/field. This is similar (but not 15476related internally) to the problem that was fixed in the last 15477label. 15478 15479Implemented both 32-bit and 64-bit support for the BCD ASL 15480functions ToBCD and FromBCD. 15481 15482Updated all legal headers to include "2000" in the copyright 15483years. 15484 15485 ------------------------------------------ 15486Summary of changes for this label: 12_01_00 15487 15488Fixed a problem where method invocations within the ASL definition 15489of both OperationRegions and CreateXXXFields did not work 15490properly. The symptom was an AE_AML_OPERAND_TYPE during 15491initialization of the region/field: 15492 15493 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 15494[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 15495(0x3005) 15496 15497Fixed a problem where operators with more than one nested 15498subexpression would fail. The symptoms were varied, by mostly 15499AE_AML_OPERAND_TYPE errors. This was actually a rather serious 15500problem that has gone unnoticed until now. 15501 15502 Subtract (Add (1,2), Multiply (3,4)) 15503 15504Fixed a problem where AcpiGetHandle didn't quite get fixed in the 15505previous build (The prefix part of a relative path was handled 15506incorrectly). 15507 15508Fixed a problem where Operation Region initialization failed if 15509the operation region name was a "namepath" instead of a simple 15510"nameseg". Symptom was an AE_NO_OPERAND error. 15511 15512Fixed a problem where an assignment to a local variable via the 15513indirect RefOf mechanism only worked for the first such 15514assignment. Subsequent assignments were ignored. 15515 15516 ------------------------------------------ 15517Summary of changes for this label: 11_15_00 15518 15519ACPI 2.0 table support with backwards support for ACPI 1.0 and the 155200.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 15521the AML interpreter does NOT have support for the new 2.0 ASL 15522grammar terms at this time. 15523 15524All ACPI hardware access is via the GAS structures in the ACPI 2.0 15525FADT. 15526 15527All physical memory addresses across all platforms are now 64 bits 15528wide. Logical address width remains dependent on the platform 15529(i.e., "void *"). 15530 15531AcpiOsMapMemory interface changed to a 64-bit physical address. 15532 15533The AML interpreter integer size is now 64 bits, as per the ACPI 155342.0 specification. 15535 15536For backwards compatibility with ACPI 1.0, ACPI tables with a 15537revision number less than 2 use 32-bit integers only. 15538 15539Fixed a problem where the evaluation of OpRegion operands did not 15540always resolve them to numbers properly. 15541 15542------------------------------------------ 15543Summary of changes for this label: 10_20_00 15544 15545Fix for CBN_._STA issue. This fix will allow correct access to 15546CBN_ OpRegions when the _STA returns 0x8. 15547 15548Support to convert ACPI constants (Ones, Zeros, One) to actual 15549values before a package object is returned 15550 15551Fix for method call as predicate to if/while construct causing 15552incorrect if/while behavior 15553 15554Fix for Else block package lengths sometimes calculated wrong (if 15555block > 63 bytes) 15556 15557Fix for Processor object length field, was always zero 15558 15559Table load abort if FACP sanity check fails 15560 15561Fix for problem with Scope(name) if name already exists 15562 15563Warning emitted if a named object referenced cannot be found 15564(resolved) during method execution. 15565 15566 15567 15568 15569 15570------------------------------------------ 15571Summary of changes for this label: 9_29_00 15572 15573New table initialization interfaces: AcpiInitializeSubsystem no 15574longer has any parameters AcpiFindRootPointer - Find the RSDP (if 15575necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 15576>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 15577AcpiLoadTables 15578 15579Note: These interface changes require changes to all existing OSDs 15580 15581The PCI_Config default address space handler is always installed 15582at the root namespace object. 15583 15584------------------------------------------- 15585Summary of changes for this label: 09_15_00 15586 15587The new initialization architecture is implemented. New 15588interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 15589AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 15590 15591(Namespace is automatically loaded when a table is loaded) 15592 15593The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1559452 bytes to 32 bytes. There is usually one of these for every 15595namespace object, so the memory savings is significant. 15596 15597Implemented just-in-time evaluation of the CreateField operators. 15598 15599Bug fixes for IA-64 support have been integrated. 15600 15601Additional code review comments have been implemented 15602 15603The so-called "third pass parse" has been replaced by a final walk 15604through the namespace to initialize all operation regions (address 15605spaces) and fields that have not yet been initialized during the 15606execution of the various _INI and REG methods. 15607 15608New file - namespace/nsinit.c 15609 15610------------------------------------------- 15611Summary of changes for this label: 09_01_00 15612 15613Namespace manager data structures have been reworked to change the 15614primary object from a table to a single object. This has 15615resulted in dynamic memory savings of 3X within the namespace and 156162X overall in the ACPI CA subsystem. 15617 15618Fixed problem where the call to AcpiEvFindPciRootBuses was 15619inadvertently left commented out. 15620 15621Reduced the warning count when generating the source with the GCC 15622compiler. 15623 15624Revision numbers added to each module header showing the 15625SourceSafe version of the file. Please refer to this version 15626number when giving us feedback or comments on individual modules. 15627 15628The main object types within the subsystem have been renamed to 15629clarify their purpose: 15630 15631ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 15632ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 15633ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 15634 15635NOTE: no changes to the initialization sequence are included in 15636this label. 15637 15638------------------------------------------- 15639Summary of changes for this label: 08_23_00 15640 15641Fixed problem where TerminateControlMethod was being called 15642multiple times per method 15643 15644Fixed debugger problem where single stepping caused a semaphore to 15645be oversignalled 15646 15647Improved performance through additional parse object caching - 15648added ACPI_EXTENDED_OP type 15649 15650------------------------------------------- 15651Summary of changes for this label: 08_10_00 15652 15653Parser/Interpreter integration: Eliminated the creation of 15654complete parse trees for ACPI tables and control methods. 15655Instead, parse subtrees are created and then deleted as soon as 15656they are processed (Either entered into the namespace or executed 15657by the interpreter). This reduces the use of dynamic kernel 15658memory significantly. (about 10X) 15659 15660Exception codes broken into classes and renumbered. Be sure to 15661recompile all code that includes acexcep.h. Hopefully we won't 15662have to renumber the codes again now that they are split into 15663classes (environment, programmer, AML code, ACPI table, and 15664internal). 15665 15666Fixed some additional alignment issues in the Resource Manager 15667subcomponent 15668 15669Implemented semaphore tracking in the AcpiExec utility, and fixed 15670several places where mutexes/semaphores were being unlocked 15671without a corresponding lock operation. There are no known 15672semaphore or mutex "leaks" at this time. 15673 15674Fixed the case where an ASL Return operator is used to return an 15675unnamed package. 15676 15677------------------------------------------- 15678Summary of changes for this label: 07_28_00 15679 15680Fixed a problem with the way addresses were calculated in 15681AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 15682manifested itself when a Field was created with WordAccess or 15683DwordAccess, but the field unit defined within the Field was less 15684 15685than a Word or Dword. 15686 15687Fixed a problem in AmlDumpOperands() module's loop to pull 15688operands off of the operand stack to display information. The 15689problem manifested itself as a TLB error on 64-bit systems when 15690accessing an operand stack with two or more operands. 15691 15692Fixed a problem with the PCI configuration space handlers where 15693context was getting confused between accesses. This required a 15694change to the generic address space handler and address space 15695setup definitions. Handlers now get both a global handler context 15696(this is the one passed in by the user when executing 15697AcpiInstallAddressSpaceHandler() and a specific region context 15698that is unique to each region (For example, the _ADR, _SEG and 15699_BBN values associated with a specific region). The generic 15700function definitions have changed to the following: 15701 15702typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 15703UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 15704*HandlerContext, // This used to be void *Context void 15705*RegionContext); // This is an additional parameter 15706 15707typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 15708RegionHandle, UINT32 Function, void *HandlerContext, void 15709**RegionContext); // This used to be **ReturnContext 15710 15711------------------------------------------- 15712Summary of changes for this label: 07_21_00 15713 15714Major file consolidation and rename. All files within the 15715interpreter have been renamed as well as most header files. This 15716was done to prevent collisions with existing files in the host 15717OSs -- filenames such as "config.h" and "global.h" seem to be 15718quite common. The VC project files have been updated. All 15719makefiles will require modification. 15720 15721The parser/interpreter integration continues in Phase 5 with the 15722implementation of a complete 2-pass parse (the AML is parsed 15723twice) for each table; This avoids the construction of a huge 15724parse tree and therefore reduces the amount of dynamic memory 15725required by the subsystem. Greater use of the parse object cache 15726means that performance is unaffected. 15727 15728Many comments from the two code reviews have been rolled in. 15729 15730The 64-bit alignment support is complete. 15731 15732------------------------------------------- 15733Summary of changes for this label: 06_30_00 15734 15735With a nod and a tip of the hat to the technology of yesteryear, 15736we've added support in the source code for 80 column output 15737devices. The code is now mostly constrained to 80 columns or 15738less to support environments and editors that 1) cannot display 15739or print more than 80 characters on a single line, and 2) cannot 15740disable line wrapping. 15741 15742A major restructuring of the namespace data structure has been 15743completed. The result is 1) cleaner and more 15744understandable/maintainable code, and 2) a significant reduction 15745in the dynamic memory requirement for each named ACPI object 15746(almost half). 15747 15748------------------------------------------- 15749Summary of changes for this label: 06_23_00 15750 15751Linux support has been added. In order to obtain approval to get 15752the ACPI CA subsystem into the Linux kernel, we've had to make 15753quite a few changes to the base subsystem that will affect all 15754users (all the changes are generic and OS- independent). The 15755effects of these global changes have been somewhat far reaching. 15756Files have been merged and/or renamed and interfaces have been 15757renamed. The major changes are described below. 15758 15759Osd* interfaces renamed to AcpiOs* to eliminate namespace 15760pollution/confusion within our target kernels. All OSD 15761interfaces must be modified to match the new naming convention. 15762 15763Files merged across the subsystem. A number of the smaller source 15764and header files have been merged to reduce the file count and 15765increase the density of the existing files. There are too many 15766to list here. In general, makefiles that call out individual 15767files will require rebuilding. 15768 15769Interpreter files renamed. All interpreter files now have the 15770prefix am* instead of ie* and is*. 15771 15772Header files renamed: The acapi.h file is now acpixf.h. The 15773acpiosd.h file is now acpiosxf.h. We are removing references to 15774the acronym "API" since it is somewhat windowsy. The new name is 15775"external interface" or xface or xf in the filenames.j 15776 15777 15778All manifest constants have been forced to upper case (some were 15779mixed case.) Also, the string "ACPI_" has been prepended to many 15780(not all) of the constants, typedefs, and structs. 15781 15782The globals "DebugLevel" and "DebugLayer" have been renamed 15783"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 15784 15785All other globals within the subsystem are now prefixed with 15786"AcpiGbl_" Internal procedures within the subsystem are now 15787prefixed with "Acpi" (with only a few exceptions). The original 15788two-letter abbreviation for the subcomponent remains after "Acpi" 15789- for example, CmCallocate became AcpiCmCallocate. 15790 15791Added a source code translation/conversion utility. Used to 15792generate the Linux source code, it can be modified to generate 15793other types of source as well. Can also be used to cleanup 15794existing source by removing extraneous spaces and blank lines. 15795Found in tools/acpisrc/* 15796 15797OsdUnMapMemory was renamed to OsdUnmapMemory and then 15798AcpiOsUnmapMemory. (UnMap became Unmap). 15799 15800A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 15801When set to one, this indicates that the caller wants to use the 15802 15803semaphore as a mutex, not a counting semaphore. ACPI CA uses 15804both types. However, implementers of this call may want to use 15805different OS primitives depending on the type of semaphore 15806requested. For example, some operating systems provide separate 15807 15808"mutex" and "semaphore" interfaces - where the mutex interface is 15809much faster because it doesn't have all the overhead of a full 15810semaphore implementation. 15811 15812Fixed a deadlock problem where a method that accesses the PCI 15813address space can block forever if it is the first access to the 15814space. 15815 15816------------------------------------------- 15817Summary of changes for this label: 06_02_00 15818 15819Support for environments that cannot handle unaligned data 15820accesses (e.g. firmware and OS environments devoid of alignment 15821handler technology namely SAL/EFI and the IA-64 Linux kernel) has 15822been added (via configurable macros) in these three areas: - 15823Transfer of data from the raw AML byte stream is done via byte 15824moves instead of word/dword/qword moves. - External objects are 15825aligned within the user buffer, including package elements (sub- 15826objects). - Conversion of name strings to UINT32 Acpi Names is now 15827done byte-wise. 15828 15829The Store operator was modified to mimic Microsoft's 15830implementation when storing to a Buffer Field. 15831 15832Added a check of the BM_STS bit before entering C3. 15833 15834The methods subdirectory has been obsoleted and removed. A new 15835file, cmeval.c subsumes the functionality. 15836 15837A 16-bit (DOS) version of AcpiExec has been developed. The 15838makefile is under the acpiexec directory. 15839