1---------------------------------------- 219 June 2015. Summary of changes for version 20150619: 3 4Two regressions in version 20150616 have been addressed: 5 6Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 7etc.) This update changes ACPICA to only use the standard headers for 8functions, or the prototypes for the local versions of the C library 9functions. Across the source code, this required some additional casts 10for some Clib invocations for portability. Moved all local prototypes to 11a new file, acclib.h 12 13Fixes several problems with recent changes to the handling of the FACS 14table that could cause some systems not to boot. 15 16 17---------------------------------------- 1816 June 2015. Summary of changes for version 20150616: 19 20 211) ACPICA kernel-resident subsystem: 22 23Across the entire ACPICA source code base, the various macros for the C 24library functions (such as ACPI_STRLEN, etc.) have been removed and 25replaced by the standard C library names (strlen, etc.) The original 26purpose for these macros is no longer applicable. This simplification 27reduces the number of macros used in the ACPICA source code 28significantly, improving readability and maintainability. 29 30Implemented support for a new ACPI table, the OSDT. This table, the 31"override" SDT, can be loaded directly by the host OS at boot time. It 32enables the replacement of existing namespace objects that were installed 33via the DSDT and/or SSDTs. The primary purpose for this is to replace 34buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 35for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 36Moore. 37 38Added support for systems with (improperly) two FACS tables -- a "32-bit" 39table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 40X field). This change will support both automatically. There continues to 41be systems found with this issue. This support requires a change to the 42AcpiSetFirmwareWakingVector interface. Also, a public global variable has 43been added to allow the host to select which FACS is desired 44(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 45details Lv Zheng. 46 47Added a new feature to allow for systems that do not contain an FACS. 48Although this is already supported on hardware-reduced platforms, the 49feature has been extended for all platforms. The reasoning is that we do 50not want to abort the entire ACPICA initialization just because the 51system is seriously buggy and has no FACS. 52 53Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 54not correctly transcribed from the ACPI specification in ACPICA version 5520150515. 56 57Implemented support for the _CLS object in the AcpiGetObjectInfo external 58interface. 59 60Updated the definitions of the TCPA and TPM2 ACPI tables to the more 61recent TCG ACPI Specification, December 14, 2014. Table disassembler and 62compiler also updated. Note: The TCPA "server" table is not supported by 63the disassembler/table-compiler at this time. 64 65ACPI 6.0: Added definitions for the new GIC version field in the MADT. 66 67Example Code and Data Size: These are the sizes for the OS-independent 68acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 69debug version of the code includes the debug output trace mechanism and 70has a much larger code and data size. 71 72 Current Release: 73 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 74 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 75 Previous Release: 76 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 77 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 78 79 802) iASL Compiler/Disassembler and Tools: 81 82Disassembler: Fixed a problem with the new symbolic operator disassembler 83where incorrect ASL code could be emitted in some cases for the "non- 84commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 85ShiftRight. The actual problem cases seem to be rather unusual in common 86ASL code, however. David Box. 87 88Modified the linux version of acpidump to obtain ACPI tables from not 89just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 90Zheng. 91 92iASL: Fixed a problem where the user preprocessor output file (.i) 93contained extra data that was not expected. The compiler was using this 94file as a temporary file and passed through #line directives in order to 95keep compiler error messages in sync with the input file and line number 96across multiple include files. The (.i) is no longer a temporary file as 97the compiler uses a new, different file for the original purpose. 98 99iASL: Fixed a problem where comments within the original ASL source code 100file were not passed through to the preprocessor output file, nor any 101listing files. 102 103iASL: Fixed some issues for the handling of the "#include" preprocessor 104directive and the similar (but not the same) "Include" ASL operator. 105 106iASL: Add support for the new OSDT in both the disassembler and compiler. 107 108iASL: Fixed a problem with the constant folding support where a Buffer 109object could be incorrectly generated (incorrectly formed) during a 110conversion to a Store() operator. 111 112AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 113description text for the _REV predefined name. _REV now permanently 114returns 2, as per the ACPI 6.0 specification. 115 116Debugger: Enhanced the output of the Debug ASL object for references 117produced by the Index operator. For Buffers and strings, only output the 118actual byte pointed to by the index. For packages, only print the single 119package element decoded by the index. Previously, the entire 120buffer/string/package was emitted. 121 122iASL/Table-compiler: Fixed a regression where the "generic" data types 123were no longer recognized, causing errors. 124 125 126---------------------------------------- 12715 May 2015. Summary of changes for version 20150515: 128 129This release implements most of ACPI 6.0 as described below. 130 1311) ACPICA kernel-resident subsystem: 132 133Implemented runtime argument checking and return value checking for all 134new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 135_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 136 137Example Code and Data Size: These are the sizes for the OS-independent 138acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 139debug version of the code includes the debug output trace mechanism and 140has a much larger code and data size. 141 142 Current Release: 143 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 144 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 145 Previous Release: 146 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 147 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 148 149 1502) iASL Compiler/Disassembler and Tools: 151 152iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 153names (argument count validation and return value typechecking.) 154 155iASL disassembler and table compiler: implemented support for all new 156ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 157 158iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 159tables: FADT, MADT. 160 161iASL preprocessor: Added a new directive to enable inclusion of binary 162blobs into ASL code. The new directive is #includebuffer. It takes a 163binary file as input and emits a named ascii buffer object into the ASL 164code. 165 166AcpiHelp: Added support for all new ACPI 6.0 predefined names. 167 168AcpiHelp: Added a new option, -d, to display all iASL preprocessor 169directives. 170 171AcpiHelp: Added a new option, -t, to display all known/supported ACPI 172tables. 173 174---------------------------------------- 17510 April 2015. Summary of changes for version 20150410: 176 177Reverted a change introduced in version 20150408 that caused 178a regression in the disassembler where incorrect operator 179symbols could be emitted. 180 181---------------------------------------- 18208 April 2015. Summary of changes for version 20150408: 183 184 1851) ACPICA kernel-resident subsystem: 186 187Permanently set the return value for the _REV predefined name. It now 188returns 2 (was 5). This matches other ACPI implementations. _REV will be 189deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 190for ACPI 2.0 and later. It should never be used to differentiate or 191identify operating systems. 192 193Added the "Windows 2015" string to the _OSI support. ACPICA will now 194return TRUE to a query with this string. 195 196Fixed several issues with the local version of the printf function. 197 198Added the C99 compiler option (-std=c99) to the Unix makefiles. 199 200 Current Release: 201 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 202 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 203 Previous Release: 204 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 205 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 206 207 2082) iASL Compiler/Disassembler and Tools: 209 210iASL: Implemented an enhancement to the constant folding feature to 211transform the parse tree to a simple Store operation whenever possible: 212 Add (2, 3, X) ==> is converted to: Store (5, X) 213 X = 2 + 3 ==> is converted to: Store (5, X) 214 215Updated support for the SLIC table (Software Licensing Description Table) 216in both the Data Table compiler and the disassembler. The SLIC table 217support now conforms to "Microsoft Software Licensing Tables (SLIC and 218MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 219following the ACPI header is now defined to be "Proprietary Data", and as 220such, can only be entered or displayed as a hex data block. 221 222Implemented full support for the MSDM table as described in the document 223above. Note: The format of MSDM is similar to SLIC. Any MSDM data 224following the ACPI header is defined to be "Proprietary Data", and can 225only be entered or displayed as a hex data block. 226 227Implemented the -Pn option for the iASL Table Compiler (was only 228implemented for the ASL compiler). This option disables the iASL 229preprocessor. 230 231Disassembler: For disassembly of Data Tables, added a comment field 232around the Ascii equivalent data that is emitted as part of the "Raw 233Table Data" block. This prevents the iASL Preprocessor from possible 234confusion if/when the table is compiled. 235 236Disassembler: Added an option (-df) to force the disassembler to assume 237that the table being disassembled contains valid AML. This feature is 238useful for disassembling AML files that contain ACPI signatures other 239than DSDT or SSDT (such as OEMx or other signatures). 240 241Changes for the EFI version of the tools: 2421) Fixed a build error/issue 2432) Fixed a cast warning 244 245iASL: Fixed a path issue with the __FILE__ operator by making the 246directory prefix optional within the internal SplitInputFilename 247function. 248 249Debugger: Removed some unused global variables. 250 251Tests: Updated the makefile for proper generation of the AAPITS suite. 252 253---------------------------------------- 25404 February 2015. Summary of changes for version 20150204: 255 256ACPICA kernel-resident subsystem: 257 258Updated all ACPICA copyrights and signons to 2014. Added the 2014 259copyright to all module headers and signons, including the standard Linux 260header. This affects virtually every file in the ACPICA core subsystem, 261iASL compiler, all ACPICA utilities, and the test suites. 262 263Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 264A raw gpe handling mechanism was created to allow better handling of GPE 265storms that aren't easily managed by the normal handler. The raw handler 266allows disabling/renabling of the the GPE so that interrupt storms can be 267avoided in cases where events cannot be timely serviced. In this 268scenario, handlers should use the AcpiSetGpe() API to disable/enable the 269GPE. This API will leave the reference counts undisturbed, thereby 270preventing unintentional clearing of the GPE when the intent in only to 271temporarily disable it. Raw handlers allow enabling and disabling of a 272GPE by removing GPE register locking. As such, raw handlers much provide 273their own locks while using GPE API's to protect access to GPE data 274structures. 275Lv Zheng 276 277Events: Always modify GPE registers under the GPE lock. 278Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 279values. Reported as bug by joe.liu@apple.com. 280 281Unix makefiles: Separate option to disable optimizations and 282_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 283NOOPT disable option and creates a separate flag (NOFORTIFY) for this 284purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 285errors when building ACPICA. This allows disabling the option without 286also having to disable optimazations. 287David Box 288 289 Current Release: 290 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 291 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 292 293---------------------------------------- 29407 November 2014. Summary of changes for version 20141107: 295 296This release is available at https://acpica.org/downloads 297 298This release introduces and implements language extensions to ASL that 299provide support for symbolic ("C-style") operators and expressions. These 300language extensions are known collectively as ASL+. 301 302 3031) iASL Compiler/Disassembler and Tools: 304 305Disassembler: Fixed a problem with disassembly of the UartSerialBus 306macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 307Box. 308 309Disassembler: Fixed the Unicode macro support to add escape sequences. 310All non-printable ASCII values are emitted as escape sequences, as well 311as the standard escapes for quote and backslash. Ensures that the 312disassembled macro can be correctly recompiled. 313 314iASL: Added Printf/Fprintf macros for formatted output. These macros are 315translated to existing AML Concatenate and Store operations. Printf 316writes to the ASL Debug object. Fprintf allows the specification of an 317ASL name as the target. Only a single format specifier is required, %o, 318since the AML interpreter dynamically converts objects to the required 319type. David E. Box. 320 321 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 322 (Concatenate (Concatenate (Concatenate ("", Arg0), 323 ": Unexpected value for "), Arg1), ", "), Arg2), 324 " at line "), Arg3), Debug) 325 326 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 327 Arg0, Arg1, Arg2, Arg3) 328 329 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 330 ("", Arg1), ": "), Arg0), " Successful"), STR1) 331 332 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 333 334iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 335ASL parse tree before the AML code is generated. This allows blocks of 336ASL code to be removed in order to help locate and identify problem 337devices and/or code. David E. Box. 338 339AcpiExec: Added support (-fi) for an optional namespace object 340initialization file. This file specifies initial values for namespace 341objects as necessary for debugging and testing different ASL code paths 342that may be taken as a result of BIOS options. 343 344 3452) Overview of symbolic operator support for ASL (ASL+) 346------------------------------------------------------- 347 348As an extension to the ASL language, iASL implements support for symbolic 349(C-style) operators for math and logical expressions. This can greatly 350simplify ASL code as well as improve both readability and 351maintainability. These language extensions can exist concurrently with 352all legacy ASL code and expressions. 353 354The symbolic extensions are 100% compatible with existing AML 355interpreters, since no new AML opcodes are created. To implement the 356extensions, the iASL compiler transforms the symbolic expressions into 357the legacy ASL/AML equivalents at compile time. 358 359Full symbolic expressions are supported, along with the standard C 360precedence and associativity rules. 361 362Full disassembler support for the symbolic expressions is provided, and 363creates an automatic migration path for existing ASL code to ASL+ code 364via the disassembly process. By default, the disassembler now emits ASL+ 365code with symbolic expressions. An option (-dl) is provided to force the 366disassembler to emit legacy ASL code if desired. 367 368Below is the complete list of the currently supported symbolic operators 369with examples. See the iASL User Guide for additional information. 370 371 372ASL+ Syntax Legacy ASL Equivalent 373----------- --------------------- 374 375 // Math operators 376 377Z = X + Y Add (X, Y, Z) 378Z = X - Y Subtract (X, Y, Z) 379Z = X * Y Multiply (X, Y, Z) 380Z = X / Y Divide (X, Y, , Z) 381Z = X % Y Mod (X, Y, Z) 382Z = X << Y ShiftLeft (X, Y, Z) 383Z = X >> Y ShiftRight (X, Y, Z) 384Z = X & Y And (X, Y, Z) 385Z = X | Y Or (X, Y, Z) 386Z = X ^ Y Xor (X, Y, Z) 387Z = ~X Not (X, Z) 388X++ Increment (X) 389X-- Decrement (X) 390 391 // Logical operators 392 393(X == Y) LEqual (X, Y) 394(X != Y) LNotEqual (X, Y) 395(X < Y) LLess (X, Y) 396(X > Y) LGreater (X, Y) 397(X <= Y) LLessEqual (X, Y) 398(X >= Y) LGreaterEqual (X, Y) 399(X && Y) LAnd (X, Y) 400(X || Y) LOr (X, Y) 401(!X) LNot (X) 402 403 // Assignment and compound assignment operations 404 405X = Y Store (Y, X) 406X += Y Add (X, Y, X) 407X -= Y Subtract (X, Y, X) 408X *= Y Multiply (X, Y, X) 409X /= Y Divide (X, Y, , X) 410X %= Y Mod (X, Y, X) 411X <<= Y ShiftLeft (X, Y, X) 412X >>= Y ShiftRight (X, Y, X) 413X &= Y And (X, Y, X) 414X |= Y Or (X, Y, X) 415X ^= Y Xor (X, Y, X) 416 417 4183) ASL+ Examples: 419----------------- 420 421Legacy ASL: 422 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 423 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 4240x03FB), 425 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 426 { 427 And (MEMB, 0xFFFFFFF0, SRMB) 428 Store (MEMB, Local2) 429 Store (PDBM, Local1) 430 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 431 Store (SRMB, MEMB) 432 Or (PDBM, 0x02, PDBM) 433 } 434 435ASL+ version: 436 If (((R510 & 0x03FB) == 0x02E0) || 437 ((R520 & 0x03FB) == 0x02E0) || 438 ((R530 & 0x03FB) == 0x02E0) || 439 ((R540 & 0x03FB) == 0x02E0)) 440 { 441 SRMB = (MEMB & 0xFFFFFFF0) 442 Local2 = MEMB 443 Local1 = PDBM 444 PDBM &= 0xFFFFFFFFFFFFFFF9 445 MEMB = SRMB 446 PDBM |= 0x02 447 } 448 449Legacy ASL: 450 Store (0x1234, Local1) 451 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 452 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 453 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 454 Store (Index (PKG1, 0x03), Local6) 455 Store (Add (Local3, Local2), Debug) 456 Add (Local1, 0x0F, Local2) 457 Add (Local1, Multiply (Local2, Local3), Local2) 458 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 459 460ASL+ version: 461 Local1 = 0x1234 462 Local3 = (((Local1 + TEST) + 0x20) * Local2) 463 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 464 Local3 = (Local1 + (TEST + (0x20 * Local2))) 465 Local6 = Index (PKG1, 0x03) 466 Debug = (Local3 + Local2) 467 Local2 = (Local1 + 0x0F) 468 Local2 = (Local1 + (Local2 * Local3)) 469 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 470 471 472---------------------------------------- 47326 September 2014. Summary of changes for version 20140926: 474 4751) ACPICA kernel-resident subsystem: 476 477Updated the GPIO operation region handler interface (GeneralPurposeIo). 478In order to support GPIO Connection objects with multiple pins, along 479with the related Field objects, the following changes to the interface 480have been made: The Address is now defined to be the offset in bits of 481the field unit from the previous invocation of a Connection. It can be 482viewed as a "Pin Number Index" into the connection resource descriptor. 483The BitWidth is the exact bit width of the field. It is usually one bit, 484but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 485additional information and examples. 486 487GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 488corresponding _Lxx/_Exx methods are disabled (they may have been enabled 489by the firmware), so that they cannot fire until they are enabled via 490AcpiUpdateAllGpes. Rafael J. Wysocki. 491 492Added a new return flag for the Event/GPE status interfaces -- 493AcpiGetEventStatus and AcpiGetGpeStatus. The new 494ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 495GPE currently has a handler associated with it, and can thus actually 496affect the system. Lv Zheng. 497 498Example Code and Data Size: These are the sizes for the OS-independent 499acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 500debug version of the code includes the debug output trace mechanism and 501has a much larger code and data size. 502 503 Current Release: 504 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 505 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 506 Previous Release: 507 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 508 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 509 5102) iASL Compiler/Disassembler and Tools: 511 512iASL: Fixed a memory allocation/free regression introduced in 20140828 513that could cause the compiler to crash. This was introduced inadvertently 514during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 5151113. 516 517iASL: Removed two error messages that have been found to create false 518positives, until they can be fixed and fully validated (ACPICA BZ 1112): 5191) Illegal forward reference within a method 5202) Illegal reference across two methods 521 522iASL: Implemented a new option (-lm) to create a hardware mapping file 523that summarizes all GPIO, I2C, SPI, and UART connections. This option 524works for both the compiler and disassembler. See the iASL compiler user 525guide for additional information and examples (section 6.4.6). 526 527AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 528version 2. This corrects the AE_BAD_HEADER exception seen on systems with 529a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 530 531AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 532unless STDIN is actually a terminal. Assists with batch-mode processing. 533ACPICA BZ 1114. 534 535Disassembler/AcpiHelp: Added another large group of recognized _HID 536values. 537 538 539---------------------------------------- 54028 August 2014. Summary of changes for version 20140828: 541 5421) ACPICA kernel-resident subsystem: 543 544Fixed a problem related to the internal use of the Timer() operator where 545a 64-bit divide could cause an attempted link to a double-precision math 546library. This divide is not actually necessary, so the code was 547restructured to eliminate it. Lv Zheng. 548 549ACPI 5.1: Added support for the runtime validation of the _DSD package 550(similar to the iASL support). 551 552ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 553SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 554 555Example Code and Data Size: These are the sizes for the OS-independent 556acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 557debug version of the code includes the debug output trace mechanism and 558has a much larger code and data size. 559 560 Current Release: 561 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 562 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 563 Previous Release: 564 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 565 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 566 5672) iASL Compiler/Disassembler and Tools: 568 569AcpiExec: Fixed a problem on unix systems where the original terminal 570state was not always properly restored upon exit. Seen when using the -v 571option. ACPICA BZ 1104. 572 573iASL: Fixed a problem with the validation of the ranges/length within the 574Memory24 resource descriptor. There was a boundary condition when the 575range was equal to the (length -1) caused by the fact that these values 576are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 577 578Disassembler: Fixed a problem with the GpioInt descriptor interrupt 579polarity 580flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 581is 582now supported properly. 583 584ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 585in the disassembler, data table compiler, and table template generator. 586 587iASL: Added a requirement for Device() objects that one of either a _HID 588or _ADR must exist within the scope of a Device, as per the ACPI 589specification. Remove a similar requirement that was incorrectly in place 590for the _DSD object. 591 592iASL: Added error detection for illegal named references within control 593methods that would cause runtime failures. Now trapped as errors are: 1) 594References to objects within a non-parent control method. 2) Forward 595references (within a method) -- for control methods, AML interpreters use 596a one-pass parse of control methods. ACPICA BZ 1008. 597 598iASL: Added error checking for dependencies related to the _PSx power 599methods. ACPICA BZ 1029. 6001) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 601_PS3. 6022) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 603scope. 604 605iASL and table compiler: Cleanup miscellaneous memory leaks by fully 606deploying the existing object and string caches and adding new caches for 607the table compiler. 608 609iASL: Split the huge parser source file into multiple subfiles to improve 610manageability. Generation now requires the M4 macro preprocessor, which 611is part of the Bison distribution on both unix and windows platforms. 612 613AcpiSrc: Fixed and removed all extraneous warnings generated during 614entire ACPICA source code scan and/or conversion. 615 616 617---------------------------------------- 618 61924 July 2014. Summary of changes for version 20140724: 620 621The ACPI 5.1 specification has been released and is available at: 622http://uefi.org/specs/access 623 624 6250) ACPI 5.1 support in ACPICA: 626 627ACPI 5.1 is fully supported in ACPICA as of this release. 628 629New predefined names. Support includes iASL and runtime ACPICA 630validation. 631 _CCA (Cache Coherency Attribute). 632 _DSD (Device-Specific Data). David Box. 633 634Modifications to existing ACPI tables. Support includes headers, iASL 635Data Table compiler, disassembler, and the template generator. 636 FADT - New fields and flags. Graeme Gregory. 637 GTDT - One new subtable and new fields. Tomasz Nowicki. 638 MADT - Two new subtables. Tomasz Nowicki. 639 PCCT - One new subtable. 640 641Miscellaneous. 642 New notification type for System Resource Affinity change events. 643 644 6451) ACPICA kernel-resident subsystem: 646 647Fixed a regression introduced in 20140627 where a fault can happen during 648the deletion of Alias AML namespace objects. The problem affected both 649the core ACPICA and the ACPICA tools including iASL and AcpiExec. 650 651Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 652simple mechanism to enable wake GPEs that have no associated handler or 653control method. Rafael Wysocki. 654 655Updated the AcpiEnableGpe interface to disallow the enable if there is no 656handler or control method associated with the particular GPE. This will 657help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 658 659Updated GPE handling and dispatch by disabling the GPE before clearing 660the status bit for edge-triggered GPEs. Lv Zheng. 661 662Added Timer() support to the AML Debug object. The current timer value is 663now displayed with each invocation of (Store to) the debug object to 664enable simple generation of execution times for AML code (method 665execution for example.) ACPICA BZ 1093. 666 667Example Code and Data Size: These are the sizes for the OS-independent 668acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 669debug version of the code includes the debug output trace mechanism and 670has a much larger code and data size. 671 672 Current Release: 673 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 674 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 675 Previous Release: 676 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 677 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 678 679 6802) iASL Compiler/Disassembler and Tools: 681 682Fixed an issue with the recently added local printf implementation, 683concerning width/precision specifiers that could cause incorrect output. 684Lv Zheng. ACPICA BZ 1094. 685 686Disassembler: Added support to detect buffers that contain UUIDs and 687disassemble them to an invocation of the ToUUID operator. Also emit 688commented descriptions of known ACPI-related UUIDs. 689 690AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 691-u. Adds three new files. 692 693iASL: Update table compiler and disassembler for DMAR table changes that 694were introduced in September 2013. With assistance by David Woodhouse. 695 696---------------------------------------- 69727 June 2014. Summary of changes for version 20140627: 698 6991) ACPICA kernel-resident subsystem: 700 701Formatted Output: Implemented local versions of standard formatted output 702utilities such as printf, etc. Over time, it has been discovered that 703there are in fact many portability issues with printf, and the addition 704of this feature will fix/prevent these issues once and for all. Some 705known issues are summarized below: 706 7071) Output of 64-bit values is not portable. For example, UINT64 is %ull 708for the Linux kernel and is %uI64 for some MSVC versions. 7092) Invoking printf consistently in a manner that is portable across both 71032-bit and 64-bit platforms is difficult at best in many situations. 7113) The output format for pointers varies from system to system (leading 712zeros especially), and leads to inconsistent output from ACPICA across 713platforms. 7144) Certain platform-specific printf formats may conflict with ACPICA use. 7155) If there is no local C library available, ACPICA now has local support 716for printf. 717 718-- To address these printf issues in a complete manner, ACPICA now 719directly implements a small subset of printf format specifiers, only 720those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 721 722Implemented support for ACPICA generation within the EFI environment. 723Initially, the AcpiDump utility is supported in the UEFI shell 724environment. Lv Zheng. 725 726Added a new external interface, AcpiLogError, to improve ACPICA 727portability. This allows the host to redirect error messages from the 728ACPICA utilities. Lv Zheng. 729 730Added and deployed new OSL file I/O interfaces to improve ACPICA 731portability: 732 AcpiOsOpenFile 733 AcpiOsCloseFile 734 AcpiOsReadFile 735 AcpiOsWriteFile 736 AcpiOsGetFileOffset 737 AcpiOsSetFileOffset 738There are C library implementations of these functions in the new file 739service_layers/oslibcfs.c -- however, the functions can be implemented by 740the local host in any way necessary. Lv Zheng. 741 742Implemented a mechanism to disable/enable ACPI table checksum validation 743at runtime. This can be useful when loading tables very early during OS 744initialization when it may not be possible to map the entire table in 745order to compute the checksum. Lv Zheng. 746 747Fixed a buffer allocation issue for the Generic Serial Bus support. 748Originally, a fixed buffer length was used. This change allows for 749variable-length buffers based upon the protocol indicated by the field 750access attributes. Reported by Lan Tianyu. Lv Zheng. 751 752Fixed a problem where an object detached from a namespace node was not 753properly terminated/cleared and could cause a circular list problem if 754reattached. ACPICA BZ 1063. David Box. 755 756Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 757 758Fixed a possible memory leak in an error return path within the function 759AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 760 761Example Code and Data Size: These are the sizes for the OS-independent 762acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 763debug version of the code includes the debug output trace mechanism and 764has a much larger code and data size. 765 766 Current Release: 767 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 768 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 769 Previous Release: 770 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 771 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 772 773 7742) iASL Compiler/Disassembler and Tools: 775 776Disassembler: Add dump of ASCII equivalent text within a comment at the 777end of each line of the output for the Buffer() ASL operator. 778 779AcpiDump: Miscellaneous changes: 780 Fixed repetitive table dump in -n mode. 781 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 782the ACPI 2.0 GUID fails. 783 784iASL: Fixed a problem where the compiler could fault if incorrectly given 785an acpidump output file as input. ACPICA BZ 1088. David Box. 786 787AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 788they are invoked without any arguments. 789 790Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 7911086. Colin Ian King. 792 793Disassembler: Cleaned up a block of code that extracts a parent Op 794object. Added a comment that explains that the parent is guaranteed to be 795valid in this case. ACPICA BZ 1069. 796 797---------------------------------------- 79824 April 2014. Summary of changes for version 20140424: 799 8001) ACPICA kernel-resident subsystem: 801 802Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 803Some of these tables are known to contain a trailing NULL entry. Lv 804Zheng. 805 806Removed an extraneous error message for the case where there are a large 807number of system GPEs (> 124). This was the "32-bit FADT register is too 808long to convert to GAS struct" message, which is irrelevant for GPEs 809since the GPEx_BLK_LEN fields of the FADT are always used instead of the 810(limited capacity) GAS bit length. Also, several changes to ensure proper 811support for GPE numbers > 255, where some "GPE number" fields were 8-bits 812internally. 813 814Implemented and deployed additional configuration support for the public 815ACPICA external interfaces. Entire classes of interfaces can now be 816easily modified or configured out, replaced by stubbed inline functions 817by default. Lv Zheng. 818 819Moved all public ACPICA runtime configuration globals to the public 820ACPICA external interface file for convenience. Also, removed some 821obsolete/unused globals. See the file acpixf.h. Lv Zheng. 822 823Documentation: Added a new section to the ACPICA reference describing the 824maximum number of GPEs that can be supported by the FADT-defined GPEs in 825block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 826reference. 827 828Example Code and Data Size: These are the sizes for the OS-independent 829acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 830debug version of the code includes the debug output trace mechanism and 831has a much larger code and data size. 832 833 Current Release: 834 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 835 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 836 Previous Release: 837 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 838 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 839 840 8412) iASL Compiler/Disassembler and Tools: 842 843iASL and disassembler: Add full support for the LPIT table (Low Power 844Idle Table). Includes support in the disassembler, data table compiler, 845and template generator. 846 847AcpiDump utility: 8481) Add option to force the use of the RSDT (over the XSDT). 8492) Improve validation of the RSDP signature (use 8 chars instead of 4). 850 851iASL: Add check for predefined packages that are too large. For 852predefined names that contain subpackages, check if each subpackage is 853too large. (Check for too small already exists.) 854 855Debugger: Updated the GPE command (which simulates a GPE by executing the 856GPE code paths in ACPICA). The GPE device is now optional, and defaults 857to the GPE 0/1 FADT-defined blocks. 858 859Unix application OSL: Update line-editing support. Add additional error 860checking and take care not to reset terminal attributes on exit if they 861were never set. This should help guarantee that the terminal is always 862left in the previous state on program exit. 863 864---------------------------------------- 86525 March 2014. Summary of changes for version 20140325: 866 8671) ACPICA kernel-resident subsystem: 868 869Updated the auto-serialize feature for control methods. This feature 870automatically serializes all methods that create named objects in order 871to prevent runtime errors. The update adds support to ignore the 872currently executing AML SyncLevel when invoking such a method, in order 873to prevent disruption of any existing SyncLevel priorities that may exist 874in the AML code. Although the use of SyncLevels is relatively rare, this 875change fixes a regression where an AE_AML_MUTEX_ORDER exception can 876appear on some machines starting with the 20140214 release. 877 878Added a new external interface to allow the host to install ACPI tables 879very early, before the namespace is even created. AcpiInstallTable gives 880the host additional flexibility for ACPI table management. Tables can be 881installed directly by the host as if they had originally appeared in the 882XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 883(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 884with additional internal restructuring and cleanup. See the ACPICA 885Reference for interface details. Lv Zheng. 886 887Added validation of the checksum for all incoming dynamically loaded 888tables (via external interfaces or via AML Load/LoadTable operators). Lv 889Zheng. 890 891Updated the use of the AcpiOsWaitEventsComplete interface during Notify 892and GPE handler removal. Restructured calls to eliminate possible race 893conditions. Lv Zheng. 894 895Added a warning for the use/execution of the ASL/AML Unload (table) 896operator. This will help detect and identify machines that use this 897operator if and when it is ever used. This operator has never been seen 898in the field and the usage model and possible side-effects of the drastic 899runtime action of a full table removal are unknown. 900 901Reverted the use of #pragma push/pop which was introduced in the 20140214 902release. It appears that push and pop are not implemented by enough 903compilers to make the use of this feature feasible for ACPICA at this 904time. However, these operators may be deployed in a future ACPICA 905release. 906 907Added the missing EXPORT_SYMBOL macros for the install and remove SCI 908handler interfaces. 909 910Source code generation: 9111) Disabled the use of the "strchr" macro for the gcc-specific 912generation. For some versions of gcc, this macro can periodically expose 913a compiler bug which in turn causes compile-time error(s). 9142) Added support for PPC64 compilation. Colin Ian King. 915 916Example Code and Data Size: These are the sizes for the OS-independent 917acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 918debug version of the code includes the debug output trace mechanism and 919has a much larger code and data size. 920 921 Current Release: 922 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 923 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 924 Previous Release: 925 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 926 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 927 928 9292) iASL Compiler/Disassembler and Tools: 930 931Disassembler: Added several new features to improve the readability of 932the resulting ASL code. Extra information is emitted within comment 933fields in the ASL code: 9341) Known _HID/_CID values are decoded to descriptive text. 9352) Standard values for the Notify() operator are decoded to descriptive 936text. 9373) Target operands are expanded to full pathnames (in a comment) when 938possible. 939 940Disassembler: Miscellaneous updates for extern() handling: 9411) Abort compiler if file specified by -fe option does not exist. 9422) Silence unnecessary warnings about argument count mismatches. 9433) Update warning messages concerning unresolved method externals. 9444) Emit "UnknownObj" keyword for externals whose type cannot be 945determined. 946 947AcpiHelp utility: 9481) Added the -a option to display both the ASL syntax and the AML 949encoding for an input ASL operator. This effectively displays all known 950information about an ASL operator with one AcpiHelp invocation. 9512) Added substring match support (similar to a wildcard) for the -i 952(_HID/PNP IDs) option. 953 954iASL/Disassembler: Since this tool does not yet support execution on big- 955endian machines, added detection of endianness and an error message if 956execution is attempted on big-endian. Support for big-endian within iASL 957is a feature that is on the ACPICA to-be-done list. 958 959AcpiBin utility: 9601) Remove option to extract binary files from an acpidump; this function 961is made obsolete by the AcpiXtract utility. 9622) General cleanup of open files and allocated buffers. 963 964---------------------------------------- 96514 February 2014. Summary of changes for version 20140214: 966 9671) ACPICA kernel-resident subsystem: 968 969Implemented a new mechanism to proactively prevent problems with ill- 970behaved reentrant control methods that create named ACPI objects. This 971behavior is illegal as per the ACPI specification, but is nonetheless 972frequently seen in the field. Previously, this could lead to an 973AE_ALREADY_EXISTS exception if the method was actually entered by more 974than one thread. This new mechanism detects such methods at table load 975time and marks them "serialized" to prevent reentrancy. A new global 976option, AcpiGbl_AutoSerializeMethods, has been added to disable this 977feature if desired. This mechanism and global option obsoletes and 978supersedes the previous AcpiGbl_SerializeAllMethods option. 979 980Added the "Windows 2013" string to the _OSI support. ACPICA will now 981respond TRUE to _OSI queries with this string. It is the stated policy of 982ACPICA to add new strings to the _OSI support as soon as possible after 983they are defined. See the full ACPICA _OSI policy which has been added to 984the utilities/utosi.c file. 985 986Hardened/updated the _PRT return value auto-repair code: 9871) Do not abort the repair on a single subpackage failure, continue to 988check all subpackages. 9892) Add check for the minimum subpackage length (4). 9903) Properly handle extraneous NULL package elements. 991 992Added support to avoid the possibility of infinite loops when traversing 993object linked lists. Never allow an infinite loop, even in the face of 994corrupted object lists. 995 996ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 997pack(pop) directives to ensure that the ACPICA headers are independent of 998compiler settings or other host headers. 999 1000Example Code and Data Size: These are the sizes for the OS-independent 1001acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1002debug version of the code includes the debug output trace mechanism and 1003has a much larger code and data size. 1004 1005 Current Release: 1006 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1007 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1008 Previous Release: 1009 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1010 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1011 1012 10132) iASL Compiler/Disassembler and Tools: 1014 1015iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 1016first reserved field was incorrectly forced to have a value of zero. This 1017change correctly forces the field to have a value of one. ACPICA BZ 1081. 1018 1019Debugger: Added missing support for the "Extra" and "Data" subobjects 1020when displaying object data. 1021 1022Debugger: Added support to display entire object linked lists when 1023displaying object data. 1024 1025iASL: Removed the obsolete -g option to obtain ACPI tables from the 1026Windows registry. This feature has been superseded by the acpidump 1027utility. 1028 1029---------------------------------------- 103014 January 2014. Summary of changes for version 20140114: 1031 10321) ACPICA kernel-resident subsystem: 1033 1034Updated all ACPICA copyrights and signons to 2014. Added the 2014 1035copyright to all module headers and signons, including the standard Linux 1036header. This affects virtually every file in the ACPICA core subsystem, 1037iASL compiler, all ACPICA utilities, and the test suites. 1038 1039Improved parameter validation for AcpiInstallGpeBlock. Added the 1040following checks: 10411) The incoming device handle refers to type ACPI_TYPE_DEVICE. 10422) There is not already a GPE block attached to the device. 1043Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 1044device. 1045 1046Correctly support "references" in the ACPI_OBJECT. This change fixes the 1047support to allow references (namespace nodes) to be passed as arguments 1048to control methods via the evaluate object interface. This is probably 1049most useful for testing purposes, however. 1050 1051Improved support for 32/64 bit physical addresses in printf()-like 1052output. This change improves the support for physical addresses in printf 1053debug statements and other output on both 32-bit and 64-bit hosts. It 1054consistently outputs the appropriate number of bytes for each host. The 1055%p specifier is unsatisfactory since it does not emit uniform output on 1056all hosts/clib implementations (on some, leading zeros are not supported, 1057leading to difficult-to-read output). 1058 1059Example Code and Data Size: These are the sizes for the OS-independent 1060acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1061debug version of the code includes the debug output trace mechanism and 1062has a much larger code and data size. 1063 1064 Current Release: 1065 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1066 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1067 Previous Release: 1068 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1069 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1070 1071 10722) iASL Compiler/Disassembler and Tools: 1073 1074iASL: Fix a possible fault when using the Connection() operator. Fixes a 1075problem if the parent Field definition for the Connection operator refers 1076to an operation region that does not exist. ACPICA BZ 1064. 1077 1078AcpiExec: Load of local test tables is now optional. The utility has the 1079capability to load some various tables to test features of ACPICA. 1080However, there are enough of them that the output of the utility became 1081confusing. With this change, only the required local tables are displayed 1082(RSDP, XSDT, etc.) along with the actual tables loaded via the command 1083line specification. This makes the default output simler and easier to 1084understand. The -el command line option restores the original behavior 1085for testing purposes. 1086 1087AcpiExec: Added support for overlapping operation regions. This change 1088expands the simulation of operation regions by supporting regions that 1089overlap within the given address space. Supports SystemMemory and 1090SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 1091 1092AcpiExec: Added region handler support for PCI_Config and EC spaces. This 1093allows AcpiExec to simulate these address spaces, similar to the current 1094support for SystemMemory and SystemIO. 1095 1096Debugger: Added new command to read/write/compare all namespace objects. 1097The command "test objects" will exercise the entire namespace by writing 1098new values to each data object, and ensuring that the write was 1099successful. The original value is then restored and verified. 1100 1101Debugger: Added the "test predefined" command. This change makes this 1102test public and puts it under the new "test" command. The test executes 1103each and every predefined name within the current namespace. 1104 1105---------------------------------------- 110618 December 2013. Summary of changes for version 20131218: 1107 1108Global note: The ACPI 5.0A specification was released this month. There 1109are no changes needed for ACPICA since this release of ACPI is an 1110errata/clarification release. The specification is available at 1111acpi.info. 1112 1113 11141) ACPICA kernel-resident subsystem: 1115 1116Added validation of the XSDT root table if it is present. Some older 1117platforms contain an XSDT that is ill-formed or otherwise invalid (such 1118as containing some or all entries that are NULL pointers). This change 1119adds a new function to validate the XSDT before actually using it. If the 1120XSDT is found to be invalid, ACPICA will now automatically fall back to 1121using the RSDT instead. Original implementation by Zhao Yakui. Ported to 1122ACPICA and enhanced by Lv Zheng and Bob Moore. 1123 1124Added a runtime option to ignore the XSDT and force the use of the RSDT. 1125This change adds a runtime option that will force ACPICA to use the RSDT 1126instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 1127requires that an XSDT be used instead of the RSDT, the XSDT has been 1128found to be corrupt or ill-formed on some machines. Lv Zheng. 1129 1130Added a runtime option to favor 32-bit FADT register addresses over the 113164-bit addresses. This change adds an option to favor 32-bit FADT 1132addresses when there is a conflict between the 32-bit and 64-bit versions 1133of the same register. The default behavior is to use the 64-bit version 1134in accordance with the ACPI specification. This can now be overridden via 1135the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 1136 1137During the change above, the internal "Convert FADT" and "Verify FADT" 1138functions have been merged to simplify the code, making it easier to 1139understand and maintain. ACPICA BZ 933. 1140 1141Improve exception reporting and handling for GPE block installation. 1142Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 1143status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 1144 1145Added helper macros to extract bus/segment numbers from the HEST table. 1146This change adds two macros to extract the encoded bus and segment 1147numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 1148Betty Dall <betty.dall@hp.com> 1149 1150Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 1151by ACPICA. It is not a public macro, so it should have no effect on 1152existing OSV code. Lv Zheng. 1153 1154Example Code and Data Size: These are the sizes for the OS-independent 1155acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1156debug version of the code includes the debug output trace mechanism and 1157has a much larger code and data size. 1158 1159 Current Release: 1160 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1161 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1162 Previous Release: 1163 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1164 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1165 1166 11672) iASL Compiler/Disassembler and Tools: 1168 1169Disassembler: Improved pathname support for emitted External() 1170statements. This change adds full pathname support for external names 1171that have been resolved internally by the inclusion of additional ACPI 1172tables (via the iASL -e option). Without this change, the disassembler 1173can emit multiple externals for the same object, or it become confused 1174when the Scope() operator is used on an external object. Overall, greatly 1175improves the ability to actually recompile the emitted ASL code when 1176objects a referenced across multiple ACPI tables. Reported by Michael 1177Tsirkin (mst@redhat.com). 1178 1179Tests/ASLTS: Updated functional control suite to execute with no errors. 1180David Box. Fixed several errors related to the testing of the interpreter 1181slack mode. Lv Zheng. 1182 1183iASL: Added support to detect names that are declared within a control 1184method, but are unused (these are temporary names that are only valid 1185during the time the method is executing). A remark is issued for these 1186cases. ACPICA BZ 1022. 1187 1188iASL: Added full support for the DBG2 table. Adds full disassembler, 1189table compiler, and template generator support for the DBG2 table (Debug 1190Port 2 table). 1191 1192iASL: Added full support for the PCCT table, update the table definition. 1193Updates the PCCT table definition in the actbl3.h header and adds table 1194compiler and template generator support. 1195 1196iASL: Added an option to emit only error messages (no warnings/remarks). 1197The -ve option will enable only error messages, warnings and remarks are 1198suppressed. This can simplify debugging when only the errors are 1199important, such as when an ACPI table is disassembled and there are many 1200warnings and remarks -- but only the actual errors are of real interest. 1201 1202Example ACPICA code (source/tools/examples): Updated the example code so 1203that it builds to an actual working program, not just example code. Added 1204ACPI tables and execution of an example control method in the DSDT. Added 1205makefile support for Unix generation. 1206 1207---------------------------------------- 120815 November 2013. Summary of changes for version 20131115: 1209 1210This release is available at https://acpica.org/downloads 1211 1212 12131) ACPICA kernel-resident subsystem: 1214 1215Resource Manager: Fixed loop termination for the "get AML length" 1216function. The loop previously had an error termination on a NULL resource 1217pointer, which can never happen since the loop simply increments a valid 1218resource pointer. This fix changes the loop to terminate with an error on 1219an invalid end-of-buffer condition. The problem can be seen as an 1220infinite loop by callers to AcpiSetCurrentResources with an invalid or 1221corrupted resource descriptor, or a resource descriptor that is missing 1222an END_TAG descriptor. Reported by Dan Carpenter 1223<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 1224 1225Table unload and ACPICA termination: Delete all attached data objects 1226during namespace node deletion. This fix updates namespace node deletion 1227to delete the entire list of attached objects (attached via 1228AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 12291024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 1230 1231ACPICA termination: Added support to delete all objects attached to the 1232root namespace node. This fix deletes any and all objects that have been 1233attached to the root node via AcpiAttachData. Previously, none of these 1234objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 1235 1236Debug output: Do not emit the function nesting level for the in-kernel 1237build. The nesting level is really only useful during a single-thread 1238execution. Therefore, only enable this output for the AcpiExec utility. 1239Also, only emit the thread ID when executing under AcpiExec (Context 1240switches are still always detected and a message is emitted). ACPICA BZ 1241972. 1242 1243Example Code and Data Size: These are the sizes for the OS-independent 1244acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1245debug version of the code includes the debug output trace mechanism and 1246has a much larger code and data size. 1247 1248 Current Release: 1249 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1250 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1251 Previous Release: 1252 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1253 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1254 1255 12562) iASL Compiler/Disassembler and Tools: 1257 1258AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 1259correct portable POSIX header for terminal control functions. 1260 1261Disassembler: Fixed control method invocation issues related to the use 1262of the CondRefOf() operator. The problem is seen in the disassembly where 1263control method invocations may not be disassembled properly if the 1264control method name has been used previously as an argument to CondRefOf. 1265The solution is to not attempt to emit an external declaration for the 1266CondRefOf target (it is not necessary in the first place). This prevents 1267disassembler object type confusion. ACPICA BZ 988. 1268 1269Unix Makefiles: Added an option to disable compiler optimizations and the 1270_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 1271with optimizations (reportedly, gcc 4.4 for example). This change adds a 1272command line option for make (NOOPT) that disables all compiler 1273optimizations and the _FORTIFY_SOURCE compiler flag. The default 1274optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 12751034. Lv Zheng, Bob Moore. 1276 1277Tests/ASLTS: Added options to specify individual test cases and modes. 1278This allows testers running aslts.sh to optionally specify individual 1279test modes and test cases. Also added an option to disable the forced 1280generation of the ACPICA tools from source if desired. Lv Zheng. 1281 1282---------------------------------------- 128327 September 2013. Summary of changes for version 20130927: 1284 1285This release is available at https://acpica.org/downloads 1286 1287 12881) ACPICA kernel-resident subsystem: 1289 1290Fixed a problem with store operations to reference objects. This change 1291fixes a problem where a Store operation to an ArgX object that contained 1292a 1293reference to a field object did not complete the automatic dereference 1294and 1295then write to the actual field object. Instead, the object type of the 1296field object was inadvertently changed to match the type of the source 1297operand. The new behavior will actually write to the field object (buffer 1298field or field unit), thus matching the correct ACPI-defined behavior. 1299 1300Implemented support to allow the host to redefine individual OSL 1301prototypes. This change enables the host to redefine OSL prototypes found 1302in the acpiosxf.h file. This allows the host to implement OSL interfaces 1303with a macro or inlined function. Further, it allows the host to add any 1304additional required modifiers such as __iomem, __init, __exit, etc., as 1305necessary on a per-interface basis. Enables maximum flexibility for the 1306OSL interfaces. Lv Zheng. 1307 1308Hardcoded the access width for the FADT-defined reset register. The ACPI 1309specification requires the reset register width to be 8 bits. ACPICA now 1310hardcodes the width to 8 and ignores the FADT width value. This provides 1311compatibility with other ACPI implementations that have allowed BIOS code 1312with bad register width values to go unnoticed. Matthew Garett, Bob 1313Moore, 1314Lv Zheng. 1315 1316Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 1317used 1318in the OSL header (acpiosxf). The change modifies the position of this 1319macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 1320build issues if the OSL defines the implementation of the interface to be 1321an inline stub function. Lv Zheng. 1322 1323Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 1324initialization interfaces. This change adds a new macro for the main init 1325and terminate external interfaces in order to support hosts that require 1326additional or different processing for these functions. Changed from 1327ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 1328Zheng, Bob Moore. 1329 1330Cleaned up the memory allocation macros for configurability. In the 1331common 1332case, the ACPI_ALLOCATE and related macros now resolve directly to their 1333respective AcpiOs* OSL interfaces. Two options: 13341) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 1335default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 13362) For AcpiExec (and for debugging), the macros can optionally be 1337resolved 1338to the local ACPICA interfaces that track each allocation (local tracking 1339is used to immediately detect memory leaks). 1340Lv Zheng. 1341 1342Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 1343to predefine this macro to either TRUE or FALSE during the system build. 1344 1345Replaced __FUNCTION_ with __func__ in the gcc-specific header. 1346 1347Example Code and Data Size: These are the sizes for the OS-independent 1348acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1349debug version of the code includes the debug output trace mechanism and 1350has a much larger code and data size. 1351 1352 Current Release: 1353 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1354 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1355 Previous Release: 1356 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1357 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1358 1359 13602) iASL Compiler/Disassembler and Tools: 1361 1362iASL: Implemented wildcard support for the -e option. This simplifies use 1363when there are many SSDTs that must be included to resolve external 1364method 1365declarations. ACPICA BZ 1041. Example: 1366 iasl -e ssdt*.dat -d dsdt.dat 1367 1368AcpiExec: Add history/line-editing for Unix/Linux systems. This change 1369adds a portable module that implements full history and limited line 1370editing for Unix and Linux systems. It does not use readline() due to 1371portability issues. Instead it uses the POSIX termio interface to put the 1372terminal in raw input mode so that the various special keys can be 1373trapped 1374(such as up/down-arrow for history support and left/right-arrow for line 1375editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 1376 1377AcpiXtract: Add support to handle (ignore) "empty" lines containing only 1378one or more spaces. This provides compatible with early or different 1379versions of the AcpiDump utility. ACPICA BZ 1044. 1380 1381AcpiDump: Do not ignore tables that contain only an ACPI table header. 1382Apparently, some BIOSs create SSDTs that contain an ACPI table header but 1383no other data. This change adds support to dump these tables. Any tables 1384shorter than the length of an ACPI table header remain in error (an error 1385message is emitted). Reported by Yi Li. 1386 1387Debugger: Echo actual command along with the "unknown command" message. 1388 1389---------------------------------------- 139023 August 2013. Summary of changes for version 20130823: 1391 13921) ACPICA kernel-resident subsystem: 1393 1394Implemented support for host-installed System Control Interrupt (SCI) 1395handlers. Certain ACPI functionality requires the host to handle raw 1396SCIs. For example, the "SCI Doorbell" that is defined for memory power 1397state support requires the host device driver to handle SCIs to examine 1398if the doorbell has been activated. Multiple SCI handlers can be 1399installed to allow for future expansion. New external interfaces are 1400AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 1401details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 1402 1403Operation region support: Never locally free the handler "context" 1404pointer. This change removes some dangerous code that attempts to free 1405the handler context pointer in some (rare) circumstances. The owner of 1406the handler owns this pointer and the ACPICA code should never touch it. 1407Although not seen to be an issue in any kernel, it did show up as a 1408problem (fault) under AcpiExec. Also, set the internal storage field for 1409the context pointer to zero when the region is deactivated, simply for 1410sanity. David Box. ACPICA BZ 1039. 1411 1412AcpiRead: On error, do not modify the return value target location. If an 1413error happens in the middle of a split 32/32 64-bit I/O operation, do not 1414modify the target of the return value pointer. Makes the code consistent 1415with the rest of ACPICA. Bjorn Helgaas. 1416 1417Example Code and Data Size: These are the sizes for the OS-independent 1418acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1419debug version of the code includes the debug output trace mechanism and 1420has a much larger code and data size. 1421 1422 Current Release: 1423 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1424 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1425 Previous Release: 1426 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1427 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 1428 1429 14302) iASL Compiler/Disassembler and Tools: 1431 1432AcpiDump: Implemented several new features and fixed some problems: 14331) Added support to dump the RSDP, RSDT, and XSDT tables. 14342) Added support for multiple table instances (SSDT, UEFI). 14353) Added option to dump "customized" (overridden) tables (-c). 14364) Fixed a problem where some table filenames were improperly 1437constructed. 14385) Improved some error messages, removed some unnecessary messages. 1439 1440iASL: Implemented additional support for disassembly of ACPI tables that 1441contain invocations of external control methods. The -fe<file> option 1442allows the import of a file that specifies the external methods along 1443with the required number of arguments for each -- allowing for the 1444correct disassembly of the table. This is a workaround for a limitation 1445of AML code where the disassembler often cannot determine the number of 1446arguments required for an external control method and generates incorrect 1447ASL code. See the iASL reference for details. ACPICA BZ 1030. 1448 1449Debugger: Implemented a new command (paths) that displays the full 1450pathnames (namepaths) and object types of all objects in the namespace. 1451This is an alternative to the namespace command. 1452 1453Debugger: Implemented a new command (sci) that invokes the SCI dispatch 1454mechanism and any installed handlers. 1455 1456iASL: Fixed a possible segfault for "too many parent prefixes" condition. 1457This can occur if there are too many parent prefixes in a namepath (for 1458example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 1459 1460Application OSLs: Set the return value for the PCI read functions. These 1461functions simply return AE_OK, but should set the return value to zero 1462also. This change implements this. ACPICA BZ 1038. 1463 1464Debugger: Prevent possible command line buffer overflow. Increase the 1465size of a couple of the debugger line buffers, and ensure that overflow 1466cannot happen. ACPICA BZ 1037. 1467 1468iASL: Changed to abort immediately on serious errors during the parsing 1469phase. Due to the nature of ASL, there is no point in attempting to 1470compile these types of errors, and they typically end up causing a 1471cascade of hundreds of errors which obscure the original problem. 1472 1473---------------------------------------- 147425 July 2013. Summary of changes for version 20130725: 1475 14761) ACPICA kernel-resident subsystem: 1477 1478Fixed a problem with the DerefOf operator where references to FieldUnits 1479and BufferFields incorrectly returned the parent object, not the actual 1480value of the object. After this change, a dereference of a FieldUnit 1481reference results in a read operation on the field to get the value, and 1482likewise, the appropriate BufferField value is extracted from the target 1483buffer. 1484 1485Fixed a problem where the _WAK method could cause a fault under these 1486circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 1487method returned no value. The problem is rarely seen because most kernels 1488run ACPICA in slack mode. 1489 1490For the DerefOf operator, a fatal error now results if an attempt is made 1491to dereference a reference (created by the Index operator) to a NULL 1492package element. Provides compatibility with other ACPI implementations, 1493and this behavior will be added to a future version of the ACPI 1494specification. 1495 1496The ACPI Power Management Timer (defined in the FADT) is now optional. 1497This provides compatibility with other ACPI implementations and will 1498appear in the next version of the ACPI specification. If there is no PM 1499Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 1500zero in the FADT indicates no PM timer. 1501 1502Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 1503allows the host to globally enable/disable all vendor strings, all 1504feature strings, or both. Intended to be primarily used for debugging 1505purposes only. Lv Zheng. 1506 1507Expose the collected _OSI data to the host via a global variable. This 1508data tracks the highest level vendor ID that has been invoked by the BIOS 1509so that the host (and potentially ACPICA itself) can change behaviors 1510based upon the age of the BIOS. 1511 1512Example Code and Data Size: These are the sizes for the OS-independent 1513acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1514debug version of the code includes the debug output trace mechanism and 1515has a much larger code and data size. 1516 1517 Current Release: 1518 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1519 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1520 Previous Release: 1521 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1522 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1523 1524 15252) iASL Compiler/Disassembler and Tools: 1526 1527iASL: Created the following enhancements for the -so option (create 1528offset table): 15291)Add offsets for the last nameseg in each namepath for every supported 1530object type 15312)Add support for Processor, Device, Thermal Zone, and Scope objects 15323)Add the actual AML opcode for the parent object of every supported 1533object type 15344)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 1535 1536Disassembler: Emit all unresolved external symbols in a single block. 1537These are external references to control methods that could not be 1538resolved, and thus, the disassembler had to make a guess at the number of 1539arguments to parse. 1540 1541iASL: The argument to the -T option (create table template) is now 1542optional. If not specified, the default table is a DSDT, typically the 1543most common case. 1544 1545---------------------------------------- 154626 June 2013. Summary of changes for version 20130626: 1547 15481) ACPICA kernel-resident subsystem: 1549 1550Fixed an issue with runtime repair of the _CST object. Null or invalid 1551elements were not always removed properly. Lv Zheng. 1552 1553Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 1554FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 1555the maximum number of GPEs is 1016. Use of multiple GPE block devices 1556makes the system-wide number of GPEs essentially unlimited. 1557 1558Example Code and Data Size: These are the sizes for the OS-independent 1559acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1560debug version of the code includes the debug output trace mechanism and 1561has a much larger code and data size. 1562 1563 Current Release: 1564 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1565 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1566 Previous Release: 1567 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1568 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1569 1570 15712) iASL Compiler/Disassembler and Tools: 1572 1573Portable AcpiDump: Implemented full support for the Linux and FreeBSD 1574hosts. Now supports Linux, FreeBSD, and Windows. 1575 1576Disassembler: Added some missing types for the HEST and EINJ tables: "Set 1577Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 1578 1579iASL/Preprocessor: Implemented full support for nested 1580#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 1581 1582Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 1583max. The original purpose of this constraint was to limit the amount of 1584debug output. However, the string function in question (UtPrintString) is 1585now used for the disassembler also, where 256 bytes is insufficient. 1586Reported by RehabMan@GitHub. 1587 1588iASL/DataTables: Fixed some problems and issues with compilation of DMAR 1589tables. ACPICA BZ 999. Lv Zheng. 1590 1591iASL: Fixed a couple of error exit issues that could result in a "Could 1592not delete <file>" message during ASL compilation. 1593 1594AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 1595the actual signatures for these tables are "FACP" and "APIC", 1596respectively. 1597 1598AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 1599tables are allowed to have multiple instances. 1600 1601---------------------------------------- 160217 May 2013. Summary of changes for version 20130517: 1603 16041) ACPICA kernel-resident subsystem: 1605 1606Fixed a regression introduced in version 20130328 for _INI methods. This 1607change fixes a problem introduced in 20130328 where _INI methods are no 1608longer executed properly because of a memory block that was not 1609initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 1610<tomasz.nowicki@linaro.org>. 1611 1612Fixed a possible problem with the new extended sleep registers in the 1613ACPI 16145.0 FADT. Do not use these registers (even if populated) unless the HW- 1615reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 16161020. Lv Zheng. 1617 1618Implemented return value repair code for _CST predefined objects: Sort 1619the 1620list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 1621 1622Implemented a debug-only option to disable loading of SSDTs from the 1623RSDT/XSDT during ACPICA initialization. This can be useful for debugging 1624ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 1625acglobal.h - ACPICA BZ 1005. Lv Zheng. 1626 1627Fixed some issues in the ACPICA initialization and termination code: 1628Tomasz Nowicki <tomasz.nowicki@linaro.org> 16291) Clear events initialized flag upon event component termination. ACPICA 1630BZ 1013. 16312) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 16323) Delete global lock pending lock during termination. ACPICA BZ 1012. 16334) Clear debug buffer global on termination to prevent possible multiple 1634delete. ACPICA BZ 1010. 1635 1636Standardized all switch() blocks across the entire source base. After 1637many 1638years, different formatting for switch() had crept in. This change makes 1639the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 1640 1641Split some files to enhance ACPICA modularity and configurability: 16421) Split buffer dump routines into utilities/utbuffer.c 16432) Split internal error message routines into utilities/uterror.c 16443) Split table print utilities into tables/tbprint.c 16454) Split iASL command-line option processing into asloptions.c 1646 1647Makefile enhancements: 16481) Support for all new files above. 16492) Abort make on errors from any subcomponent. Chao Guan. 16503) Add build support for Apple Mac OS X. Liang Qi. 1651 1652Example Code and Data Size: These are the sizes for the OS-independent 1653acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1654debug version of the code includes the debug output trace mechanism and 1655has a much larger code and data size. 1656 1657 Current Release: 1658 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1659 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1660 Previous Release: 1661 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1662 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1663 1664 16652) iASL Compiler/Disassembler and Tools: 1666 1667New utility: Implemented an easily portable version of the acpidump 1668utility to extract ACPI tables from the system (or a file) in an ASCII 1669hex 1670dump format. The top-level code implements the various command line 1671options, file I/O, and table dump routines. To port to a new host, only 1672three functions need to be implemented to get tables -- since this 1673functionality is OS-dependent. See the tools/acpidump/apmain.c module and 1674the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 16751) The Windows version obtains the ACPI tables from the Registry. 16762) The Linux version is under development. 16773) Other hosts - If an OS-dependent module is submitted, it will be 1678distributed with ACPICA. 1679 1680iASL: Fixed a regression for -D preprocessor option (define symbol). A 1681restructuring/change to the initialization sequence caused this option to 1682no longer work properly. 1683 1684iASL: Implemented a mechanism to disable specific warnings and remarks. 1685Adds a new command line option, "-vw <messageid> as well as "#pragma 1686disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 1687 1688iASL: Fix for too-strict package object validation. The package object 1689validation for return values from the predefined names is a bit too 1690strict, it does not allow names references within the package (which will 1691be resolved at runtime.) These types of references cannot be validated at 1692compile time. This change ignores named references within package objects 1693for names that return or define static packages. 1694 1695Debugger: Fixed the 80-character command line limitation for the History 1696command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 1697 1698iASL: Added control method and package support for the -so option 1699(generates AML offset table for BIOS support.) 1700 1701iASL: issue a remark if a non-serialized method creates named objects. If 1702a thread blocks within the method for any reason, and another thread 1703enters the method, the method will fail because an attempt will be made 1704to 1705create the same (named) object twice. In this case, issue a remark that 1706the method should be marked serialized. NOTE: may become a warning later. 1707ACPICA BZ 909. 1708 1709---------------------------------------- 171018 April 2013. Summary of changes for version 20130418: 1711 17121) ACPICA kernel-resident subsystem: 1713 1714Fixed a possible buffer overrun during some rare but specific field unit 1715read operations. This overrun can only happen if the DSDT version is 1 -- 1716meaning that all AML integers are 32 bits -- and the field length is 1717between 33 and 55 bits long. During the read, an internal buffer object 1718is 1719created for the field unit because the field is larger than an integer 1720(32 1721bits). However, in this case, the buffer will be incorrectly written 1722beyond the end because the buffer length is less than the internal 1723minimum 1724of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 1725long, but a full 8 bytes will be written. 1726 1727Updated the Embedded Controller "orphan" _REG method support. This refers 1728to _REG methods under the EC device that have no corresponding operation 1729region. This is allowed by the ACPI specification. This update removes a 1730dependency on the existence an ECDT table. It will execute an orphan _REG 1731method as long as the operation region handler for the EC is installed at 1732the EC device node and not the namespace root. Rui Zhang (original 1733update), Bob Moore (update/integrate). 1734 1735Implemented run-time argument typechecking for all predefined ACPI names 1736(_STA, _BIF, etc.) This change performs object typechecking on all 1737incoming arguments for all predefined names executed via 1738AcpiEvaluateObject. This ensures that ACPI-related device drivers are 1739passing correct object types as well as the correct number of arguments 1740(therefore identifying any issues immediately). Also, the ASL/namespace 1741definition of the predefined name is checked against the ACPI 1742specification for the proper argument count. Adds one new file, 1743nsarguments.c 1744 1745Changed an exception code for the ASL UnLoad() operator. Changed the 1746exception code for the case where the input DdbHandle is invalid, from 1747AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 1748 1749Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 1750global makefile. The use of this flag causes compiler errors on earlier 1751versions of GCC, so it has been removed for compatibility. 1752 1753Miscellaneous cleanup: 17541) Removed some unused/obsolete macros 17552) Fixed a possible memory leak in the _OSI support 17563) Removed an unused variable in the predefined name support 17574) Windows OSL: remove obsolete reference to a memory list field 1758 1759Example Code and Data Size: These are the sizes for the OS-independent 1760acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1761debug version of the code includes the debug output trace mechanism and 1762has a much larger code and data size. 1763 1764 Current Release: 1765 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1766 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1767 Previous Release: 1768 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1769 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1770 1771 17722) iASL Compiler/Disassembler and Tools: 1773 1774AcpiExec: Added installation of a handler for the SystemCMOS address 1775space. This prevents control method abort if a method accesses this 1776space. 1777 1778AcpiExec: Added support for multiple EC devices, and now install EC 1779operation region handler(s) at the actual EC device instead of the 1780namespace root. This reflects the typical behavior of host operating 1781systems. 1782 1783AcpiExec: Updated to ensure that all operation region handlers are 1784installed before the _REG methods are executed. This prevents a _REG 1785method from aborting if it accesses an address space has no handler. 1786AcpiExec installs a handler for every possible address space. 1787 1788Debugger: Enhanced the "handlers" command to display non-root handlers. 1789This change enhances the handlers command to display handlers associated 1790with individual devices throughout the namespace, in addition to the 1791currently supported display of handlers associated with the root 1792namespace 1793node. 1794 1795ASL Test Suite: Several test suite errors have been identified and 1796resolved, reducing the total error count during execution. Chao Guan. 1797 1798---------------------------------------- 179928 March 2013. Summary of changes for version 20130328: 1800 18011) ACPICA kernel-resident subsystem: 1802 1803Fixed several possible race conditions with the internal object reference 1804counting mechanism. Some of the external ACPICA interfaces update object 1805reference counts without holding the interpreter or namespace lock. This 1806change adds a spinlock to protect reference count updates on the internal 1807ACPICA objects. Reported by and with assistance from Andriy Gapon 1808(avg@FreeBSD.org). 1809 1810FADT support: Removed an extraneous warning for very large GPE register 1811sets. This change removes a size mismatch warning if the legacy length 1812field for a GPE register set is larger than the 64-bit GAS structure can 1813accommodate. GPE register sets can be larger than the 255-bit width 1814limitation of the GAS structure. Linn Crosetto (linn@hp.com). 1815 1816_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 1817return from this interface. Handles a possible timeout case if 1818ACPI_WAIT_FOREVER is modified by the host to be a value less than 1819"forever". Jung-uk Kim. 1820 1821Predefined name support: Add allowed/required argument type information 1822to 1823the master predefined info table. This change adds the infrastructure to 1824enable typechecking on incoming arguments for all predefined 1825methods/objects. It does not actually contain the code that will fully 1826utilize this information, this is still under development. Also condenses 1827some duplicate code for the predefined names into a new module, 1828utilities/utpredef.c 1829 1830Example Code and Data Size: These are the sizes for the OS-independent 1831acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1832debug version of the code includes the debug output trace mechanism and 1833has a much larger code and data size. 1834 1835 Previous Release: 1836 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1837 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1838 Current Release: 1839 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1840 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1841 1842 18432) iASL Compiler/Disassembler and Tools: 1844 1845iASL: Implemented a new option to simplify the development of ACPI- 1846related 1847BIOS code. Adds support for a new "offset table" output file. The -so 1848option will create a C table containing the AML table offsets of various 1849named objects in the namespace so that BIOS code can modify them easily 1850at 1851boot time. This can simplify BIOS runtime code by eliminating expensive 1852searches for "magic values", enhancing boot times and adding greater 1853reliability. With assistance from Lee Hamel. 1854 1855iASL: Allow additional predefined names to return zero-length packages. 1856Now, all predefined names that are defined by the ACPI specification to 1857return a "variable-length package of packages" are allowed to return a 1858zero length top-level package. This allows the BIOS to tell the host that 1859the requested feature is not supported, and supports existing BIOS/ASL 1860code and practices. 1861 1862iASL: Changed the "result not used" warning to an error. This is the case 1863where an ASL operator is effectively a NOOP because the result of the 1864operation is not stored anywhere. For example: 1865 Add (4, Local0) 1866There is no target (missing 3rd argument), nor is the function return 1867value used. This is potentially a very serious problem -- since the code 1868was probably intended to do something, but for whatever reason, the value 1869was not stored. Therefore, this issue has been upgraded from a warning to 1870an error. 1871 1872AcpiHelp: Added allowable/required argument types to the predefined names 1873info display. This feature utilizes the recent update to the predefined 1874names table (above). 1875 1876---------------------------------------- 187714 February 2013. Summary of changes for version 20130214: 1878 18791) ACPICA Kernel-resident Subsystem: 1880 1881Fixed a possible regression on some hosts: Reinstated the safe return 1882macros (return_ACPI_STATUS, etc.) that ensure that the argument is 1883evaluated only once. Although these macros are not needed for the ACPICA 1884code itself, they are often used by ACPI-related host device drivers 1885where 1886the safe feature may be necessary. 1887 1888Fixed several issues related to the ACPI 5.0 reduced hardware support 1889(SOC): Now ensure that if the platform declares itself as hardware- 1890reduced 1891via the FADT, the following functions become NOOPs (and always return 1892AE_OK) because ACPI is always enabled by definition on these machines: 1893 AcpiEnable 1894 AcpiDisable 1895 AcpiHwGetMode 1896 AcpiHwSetMode 1897 1898Dynamic Object Repair: Implemented additional runtime repairs for 1899predefined name return values. Both of these repairs can simplify code in 1900the related device drivers that invoke these methods: 19011) For the _STR and _MLS names, automatically repair/convert an ASCII 1902string to a Unicode buffer. 19032) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 1904a 1905lone end tag descriptor in the following cases: A Return(0) was executed, 1906a null buffer was returned, or no object at all was returned (non-slack 1907mode only). Adds a new file, nsconvert.c 1908ACPICA BZ 998. Bob Moore, Lv Zheng. 1909 1910Resource Manager: Added additional code to prevent possible infinite 1911loops 1912while traversing corrupted or ill-formed resource template buffers. Check 1913for zero-length resource descriptors in all code that loops through 1914resource templates (the length field is used to index through the 1915template). This change also hardens the external AcpiWalkResources and 1916AcpiWalkResourceBuffer interfaces. 1917 1918Local Cache Manager: Enhanced the main data structure to eliminate an 1919unnecessary mechanism to access the next object in the list. Actually 1920provides a small performance enhancement for hosts that use the local 1921ACPICA cache manager. Jung-uk Kim. 1922 1923Example Code and Data Size: These are the sizes for the OS-independent 1924acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1925debug version of the code includes the debug output trace mechanism and 1926has a much larger code and data size. 1927 1928 Previous Release: 1929 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1930 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1931 Current Release: 1932 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1933 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1934 1935 19362) iASL Compiler/Disassembler and Tools: 1937 1938iASL/Disassembler: Fixed several issues with the definition of the ACPI 19395.0 RASF table (RAS Feature Table). This change incorporates late changes 1940that were made to the ACPI 5.0 specification. 1941 1942iASL/Disassembler: Added full support for the following new ACPI tables: 1943 1) The MTMR table (MID Timer Table) 1944 2) The VRTC table (Virtual Real Time Clock Table). 1945Includes header file, disassembler, table compiler, and template support 1946for both tables. 1947 1948iASL: Implemented compile-time validation of package objects returned by 1949predefined names. This new feature validates static package objects 1950returned by the various predefined names defined to return packages. Both 1951object types and package lengths are validated, for both parent packages 1952and sub-packages, if any. The code is similar in structure and behavior 1953to 1954the runtime repair mechanism within the AML interpreter and uses the 1955existing predefined name information table. Adds a new file, aslprepkg.c. 1956ACPICA BZ 938. 1957 1958iASL: Implemented auto-detection of binary ACPI tables for disassembly. 1959This feature detects a binary file with a valid ACPI table header and 1960invokes the disassembler automatically. Eliminates the need to 1961specifically invoke the disassembler with the -d option. ACPICA BZ 862. 1962 1963iASL/Disassembler: Added several warnings for the case where there are 1964unresolved control methods during the disassembly. This can potentially 1965cause errors when the output file is compiled, because the disassembler 1966assumes zero method arguments in these cases (it cannot determine the 1967actual number of arguments without resolution/definition of the method). 1968 1969Debugger: Added support to display all resources with a single command. 1970Invocation of the resources command with no arguments will now display 1971all 1972resources within the current namespace. 1973 1974AcpiHelp: Added descriptive text for each ACPICA exception code displayed 1975via the -e option. 1976 1977---------------------------------------- 197817 January 2013. Summary of changes for version 20130117: 1979 19801) ACPICA Kernel-resident Subsystem: 1981 1982Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 1983return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 1984objects to return a package containing one integer, most BIOS code 1985returns 1986two integers and the previous code reflects that. However, we also need 1987to 1988support BIOS code that actually implements to the ACPI spec, and this 1989change reflects this. 1990 1991Fixed two issues with the ACPI_DEBUG_PRINT macros: 19921) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 1993C compilers that require this support. 19942) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 1995ACPI_DEBUG is already used by many of the various hosts. 1996 1997Updated all ACPICA copyrights and signons to 2013. Added the 2013 1998copyright to all module headers and signons, including the standard Linux 1999header. This affects virtually every file in the ACPICA core subsystem, 2000iASL compiler, all ACPICA utilities, and the test suites. 2001 2002Example Code and Data Size: These are the sizes for the OS-independent 2003acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2004debug version of the code includes the debug output trace mechanism and 2005has a much larger code and data size. 2006 2007 Previous Release: 2008 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2009 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2010 Current Release: 2011 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2012 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2013 2014 20152) iASL Compiler/Disassembler and Tools: 2016 2017Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 2018prevent a possible fault on some hosts. Some C libraries modify the arg 2019pointer parameter to vfprintf making it difficult to call it twice in the 2020AcpiOsVprintf function. Use a local buffer to workaround this issue. This 2021does not affect the Windows OSL since the Win C library does not modify 2022the arg pointer. Chao Guan, Bob Moore. 2023 2024iASL: Fixed a possible infinite loop when the maximum error count is 2025reached. If an output file other than the .AML file is specified (such as 2026a listing file), and the maximum number of errors is reached, do not 2027attempt to flush data to the output file(s) as the compiler is aborting. 2028This can cause an infinite loop as the max error count code essentially 2029keeps calling itself. 2030 2031iASL/Disassembler: Added an option (-in) to ignore NOOP 2032opcodes/operators. 2033Implemented for both the compiler and the disassembler. Often, the NOOP 2034opcode is used as padding for packages that are changed dynamically by 2035the 2036BIOS. When disassembled and recompiled, these NOOPs will cause syntax 2037errors. This option causes the disassembler to ignore all NOOP opcodes 2038(0xA3), and it also causes the compiler to ignore all ASL source code 2039NOOP 2040statements as well. 2041 2042Debugger: Enhanced the Sleep command to execute all sleep states. This 2043change allows Sleep to be invoked with no arguments and causes the 2044debugger to execute all of the sleep states, 0-5, automatically. 2045 2046---------------------------------------- 204720 December 2012. Summary of changes for version 20121220: 2048 20491) ACPICA Kernel-resident Subsystem: 2050 2051Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 2052alternate entry point for AcpiWalkResources and improves the usability of 2053the resource manager by accepting as input a buffer containing the output 2054of either a _CRS, _PRS, or _AEI method. The key functionality is that the 2055input buffer is not deleted by this interface so that it can be used by 2056the host later. See the ACPICA reference for details. 2057 2058Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 2059(DSDT version < 2). The constant will be truncated and this warning 2060reflects that behavior. 2061 2062Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 2063ExtendedInterrupt, and GpioInt descriptors. This change adds support to 2064both get and set the new wake bit in these descriptors, separately from 2065the existing share bit. Reported by Aaron Lu. 2066 2067Interpreter: Fix Store() when an implicit conversion is not possible. For 2068example, in the cases such as a store of a string to an existing package 2069object, implement the store as a CopyObject(). This is a small departure 2070from the ACPI specification which states that the control method should 2071be 2072aborted in this case. However, the ASLTS suite depends on this behavior. 2073 2074Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 2075macros: check if debug output is currently enabled as soon as possible to 2076minimize performance impact if debug is in fact not enabled. 2077 2078Source code restructuring: Cleanup to improve modularity. The following 2079new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 2080psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 2081Associated makefiles and project files have been updated. 2082 2083Changed an exception code for LoadTable operator. For the case where one 2084of the input strings is too long, change the returned exception code from 2085AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 2086 2087Fixed a possible memory leak in dispatcher error path. On error, delete 2088the mutex object created during method mutex creation. Reported by 2089tim.gardner@canonical.com. 2090 2091Example Code and Data Size: These are the sizes for the OS-independent 2092acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2093debug version of the code includes the debug output trace mechanism and 2094has a much larger code and data size. 2095 2096 Previous Release: 2097 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2098 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2099 Current Release: 2100 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2101 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2102 2103 21042) iASL Compiler/Disassembler and Tools: 2105 2106iASL: Disallow a method call as argument to the ObjectType ASL operator. 2107This change tracks an errata to the ACPI 5.0 document. The AML grammar 2108will not allow the interpreter to differentiate between a method and a 2109method invocation when these are used as an argument to the ObjectType 2110operator. The ACPI specification change is to disallow a method 2111invocation 2112(UserTerm) for the ObjectType operator. 2113 2114Finish support for the TPM2 and CSRT tables in the headers, table 2115compiler, and disassembler. 2116 2117Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 2118always expires immediately if the semaphore is not available. The 2119original 2120code was using a relative-time timeout, but sem_timedwait requires the 2121use 2122of an absolute time. 2123 2124iASL: Added a remark if the Timer() operator is used within a 32-bit 2125table. This operator returns a 64-bit time value that will be truncated 2126within a 32-bit table. 2127 2128iASL Source code restructuring: Cleanup to improve modularity. The 2129following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 2130aslmethod.c, and aslfileio.c. Associated makefiles and project files have 2131been updated. 2132 2133 2134---------------------------------------- 213514 November 2012. Summary of changes for version 20121114: 2136 21371) ACPICA Kernel-resident Subsystem: 2138 2139Implemented a performance enhancement for ACPI/AML Package objects. This 2140change greatly increases the performance of Package objects within the 2141interpreter. It changes the processing of reference counts for packages 2142by 2143optimizing for the most common case where the package sub-objects are 2144either Integers, Strings, or Buffers. Increases the overall performance 2145of 2146the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 21472X.) 2148Chao Guan. ACPICA BZ 943. 2149 2150Implemented and deployed common macros to extract flag bits from resource 2151descriptors. Improves readability and maintainability of the code. Fixes 2152a 2153problem with the UART serial bus descriptor for the number of data bits 2154flags (was incorrectly 2 bits, should be 3). 2155 2156Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 2157of the macros and changed the SETx macros to the style of (destination, 2158source). Also added ACPI_CASTx companion macros. Lv Zheng. 2159 2160Example Code and Data Size: These are the sizes for the OS-independent 2161acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2162debug version of the code includes the debug output trace mechanism and 2163has a much larger code and data size. 2164 2165 Previous Release: 2166 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2167 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2168 Current Release: 2169 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2170 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2171 2172 21732) iASL Compiler/Disassembler and Tools: 2174 2175Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 2176adds the ShareAndWake and ExclusiveAndWake flags which were added to the 2177Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 2178 2179Disassembler: Fixed a problem with external declaration generation. Fixes 2180a problem where an incorrect pathname could be generated for an external 2181declaration if the original reference to the object includes leading 2182carats (^). ACPICA BZ 984. 2183 2184Debugger: Completed a major update for the Disassemble<method> command. 2185This command was out-of-date and did not properly disassemble control 2186methods that had any reasonable complexity. This fix brings the command 2187up 2188to the same level as the rest of the disassembler. Adds one new file, 2189dmdeferred.c, which is existing code that is now common with the main 2190disassembler and the debugger disassemble command. ACPICA MZ 978. 2191 2192iASL: Moved the parser entry prototype to avoid a duplicate declaration. 2193Newer versions of Bison emit this prototype, so moved the prototype out 2194of 2195the iASL header to where it is actually used in order to avoid a 2196duplicate 2197declaration. 2198 2199iASL/Tools: Standardized use of the stream I/O functions: 2200 1) Ensure check for I/O error after every fopen/fread/fwrite 2201 2) Ensure proper order of size/count arguments for fread/fwrite 2202 3) Use test of (Actual != Requested) after all fwrite, and most fread 2203 4) Standardize I/O error messages 2204Improves reliability and maintainability of the code. Bob Moore, Lv 2205Zheng. 2206ACPICA BZ 981. 2207 2208Disassembler: Prevent duplicate External() statements. During generation 2209of external statements, detect similar pathnames that are actually 2210duplicates such as these: 2211 External (\ABCD) 2212 External (ABCD) 2213Remove all leading '\' characters from pathnames during the external 2214statement generation so that duplicates will be detected and tossed. 2215ACPICA BZ 985. 2216 2217Tools: Replace low-level I/O with stream I/O functions. Replace 2218open/read/write/close with the stream I/O equivalents 2219fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 2220Moore. 2221 2222AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 2223name header so that AcpiXtract recognizes the output file/table. 2224 2225iASL: Remove obsolete -2 option flag. Originally intended to force the 2226compiler/disassembler into an ACPI 2.0 mode, this was never implemented 2227and the entire concept is now obsolete. 2228 2229---------------------------------------- 223018 October 2012. Summary of changes for version 20121018: 2231 2232 22331) ACPICA Kernel-resident Subsystem: 2234 2235Updated support for the ACPI 5.0 MPST table. Fixes some problems 2236introduced by late changes to the table as it was added to the ACPI 5.0 2237specification. Includes header, disassembler, and data table compiler 2238support as well as a new version of the MPST template. 2239 2240AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 22415.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 2242methods: _HID, _CID, and _UID. 2243 2244Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 2245ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 2246name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 2247names for their various drivers. Affects the AcpiGetObjectInfo external 2248interface, and other internal interfaces as well. 2249 2250Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 2251This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 2252on machines that support non-aligned transfers. Optimizes for this case 2253rather than using a strncpy. With assistance from Zheng Lv. 2254 2255Resource Manager: Small fix for buffer size calculation. Fixed a one byte 2256error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 2257 2258Added a new debug print message for AML mutex objects that are force- 2259released. At control method termination, any currently acquired mutex 2260objects are force-released. Adds a new debug-only message for each one 2261that is released. 2262 2263Audited/updated all ACPICA return macros and the function debug depth 2264counter: 1) Ensure that all functions that use the various TRACE macros 2265also use the appropriate ACPICA return macros. 2) Ensure that all normal 2266return statements surround the return expression (value) with parens to 2267ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 2268Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 2269 2270Global source code changes/maintenance: All extra lines at the start and 2271end of each source file have been removed for consistency. Also, within 2272comments, all new sentences start with a single space instead of a double 2273space, again for consistency across the code base. 2274 2275Example Code and Data Size: These are the sizes for the OS-independent 2276acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2277debug version of the code includes the debug output trace mechanism and 2278has a much larger code and data size. 2279 2280 Previous Release: 2281 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2282 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2283 Current Release: 2284 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2285 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2286 2287 22882) iASL Compiler/Disassembler and Tools: 2289 2290AcpiExec: Improved the algorithm used for memory leak/corruption 2291detection. Added some intelligence to the code that maintains the global 2292list of allocated memory. The list is now ordered by allocated memory 2293address, significantly improving performance. When running AcpiExec on 2294the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 2295on the platform and/or the environment. Note, this performance 2296enhancement affects the AcpiExec utility only, not the kernel-resident 2297ACPICA code. 2298 2299Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 2300the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 2301incorrect table offset reported for invalid opcodes. Report the original 230232-bit value for bad ACPI_NAMEs (as well as the repaired name.) 2303 2304Disassembler: Enhanced the -vt option to emit the binary table data in 2305hex format to assist with debugging. 2306 2307Fixed a potential filename buffer overflow in osunixdir.c. Increased the 2308size of file structure. Colin Ian King. 2309 2310---------------------------------------- 231113 September 2012. Summary of changes for version 20120913: 2312 2313 23141) ACPICA Kernel-resident Subsystem: 2315 2316ACPI 5.0: Added two new notify types for the Hardware Error Notification 2317Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 2318and 2319MCE(6). 2320 2321Table Manager: Merged/removed duplicate code in the root table resize 2322functions. One function is external, the other is internal. Lv Zheng, 2323ACPICA 2324BZ 846. 2325 2326Makefiles: Completely removed the obsolete "Linux" makefiles under 2327acpica/generate/linux. These makefiles are obsolete and have been 2328replaced 2329by 2330the generic unix makefiles under acpica/generate/unix. 2331 2332Makefiles: Ensure that binary files always copied properly. Minor rule 2333change 2334to ensure that the final binary output files are always copied up to the 2335appropriate binary directory (bin32 or bin64.) 2336 2337Example Code and Data Size: These are the sizes for the OS-independent 2338acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2339debug 2340version of the code includes the debug output trace mechanism and has a 2341much 2342larger code and data size. 2343 2344 Previous Release: 2345 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2346 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2347 Current Release: 2348 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2349 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2350 2351 23522) iASL Compiler/Disassembler and Tools: 2353 2354Disassembler: Fixed a possible fault during the disassembly of resource 2355descriptors when a second parse is required because of the invocation of 2356external control methods within the table. With assistance from 2357adq@lidskialf.net. ACPICA BZ 976. 2358 2359iASL: Fixed a namepath optimization problem. An error can occur if the 2360parse 2361node that contains the namepath to be optimized does not have a parent 2362node 2363that is a named object. This change fixes the problem. 2364 2365iASL: Fixed a regression where the AML file is not deleted on errors. The 2366AML 2367output file should be deleted if there are any errors during the 2368compiler. 2369The 2370only exception is if the -f (force output) option is used. ACPICA BZ 974. 2371 2372iASL: Added a feature to automatically increase internal line buffer 2373sizes. 2374Via realloc(), automatically increase the internal line buffer sizes as 2375necessary to support very long source code lines. The current version of 2376the 2377preprocessor requires a buffer long enough to contain full source code 2378lines. 2379This change increases the line buffer(s) if the input lines go beyond the 2380current buffer size. This eliminates errors that occurred when a source 2381code 2382line was longer than the buffer. 2383 2384iASL: Fixed a problem with constant folding in method declarations. The 2385SyncLevel term is a ByteConstExpr, and incorrect code would be generated 2386if a 2387Type3 opcode was used. 2388 2389Debugger: Improved command help support. For incorrect argument count, 2390display 2391full help for the command. For help command itself, allow an argument to 2392specify a command. 2393 2394Test Suites: Several bug fixes for the ASLTS suite reduces the number of 2395errors during execution of the suite. Guan Chao. 2396 2397---------------------------------------- 239816 August 2012. Summary of changes for version 20120816: 2399 2400 24011) ACPICA Kernel-resident Subsystem: 2402 2403Removed all use of the deprecated _GTS and _BFS predefined methods. The 2404_GTS 2405(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 2406deprecated and will probably be removed from the ACPI specification. 2407Windows 2408does not invoke them, and reportedly never will. The final nail in the 2409coffin 2410is that the ACPI specification states that these methods must be run with 2411interrupts off, which is not going to happen in a kernel interpreter. 2412Note: 2413Linux has removed all use of the methods also. It was discovered that 2414invoking these functions caused failures on some machines, probably 2415because 2416they were never tested since Windows does not call them. Affects two 2417external 2418interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 2419ACPICA BZ 969. 2420 2421Implemented support for complex bit-packed buffers returned from the _PLD 2422(Physical Location of Device) predefined method. Adds a new external 2423interface, AcpiDecodePldBuffer that parses the buffer into a more usable 2424C 2425structure. Note: C Bitfields cannot be used for this type of predefined 2426structure since the memory layout of individual bitfields is not defined 2427by 2428the C language. In addition, there are endian concerns where a compiler 2429will 2430change the bitfield ordering based on the machine type. The new ACPICA 2431interface eliminates these issues, and should be called after _PLD is 2432executed. ACPICA BZ 954. 2433 2434Implemented a change to allow a scope change to root (via "Scope (\)") 2435during 2436execution of module-level ASL code (code that is executed at table load 2437time.) Lin Ming. 2438 2439Added the Windows8/Server2012 string for the _OSI method. This change 2440adds 2441a 2442new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 24432012. 2444 2445Added header support for the new ACPI tables DBG2 (Debug Port Table Type 24462) 2447and CSRT (Core System Resource Table). 2448 2449Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 2450names. This simplifies access to the buffers returned by these predefined 2451names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 2452 2453GPE support: Removed an extraneous parameter from the various low-level 2454internal GPE functions. Tang Feng. 2455 2456Removed the linux makefiles from the unix packages. The generate/linux 2457makefiles are obsolete and have been removed from the unix tarball 2458release 2459packages. The replacement makefiles are under generate/unix, and there is 2460a 2461top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 2462 2463Updates for Unix makefiles: 24641) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 24652) Update linker flags (move to end of command line) for AcpiExec 2466utility. 2467Guan Chao. 2468 2469Split ACPICA initialization functions to new file, utxfinit.c. Split from 2470utxface.c to improve modularity and reduce file size. 2471 2472Example Code and Data Size: These are the sizes for the OS-independent 2473acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2474debug version of the code includes the debug output trace mechanism and 2475has a 2476much larger code and data size. 2477 2478 Previous Release: 2479 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2480 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2481 Current Release: 2482 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2483 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2484 2485 24862) iASL Compiler/Disassembler and Tools: 2487 2488iASL: Fixed a problem with constant folding for fixed-length constant 2489expressions. The constant-folding code was not being invoked for constant 2490expressions that allow the use of type 3/4/5 opcodes to generate 2491constants 2492for expressions such as ByteConstExpr, WordConstExpr, etc. This could 2493result 2494in the generation of invalid AML bytecode. ACPICA BZ 970. 2495 2496iASL: Fixed a generation issue on newer versions of Bison. Newer versions 2497apparently automatically emit some of the necessary externals. This 2498change 2499handles these versions in order to eliminate generation warnings. 2500 2501Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 2502 2503Disassembler: Add support to decode _PLD buffers. The decoded buffer 2504appears 2505within comments in the output file. 2506 2507Debugger: Fixed a regression with the "Threads" command where 2508AE_BAD_PARAMETER was always returned. 2509 2510---------------------------------------- 251111 July 2012. Summary of changes for version 20120711: 2512 25131) ACPICA Kernel-resident Subsystem: 2514 2515Fixed a possible fault in the return package object repair code. Fixes a 2516problem that can occur when a lone package object is wrapped with an 2517outer 2518package object in order to force conformance to the ACPI specification. 2519Can 2520affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 2521_DLM, 2522_CSD, _PSD, _TSD. 2523 2524Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 2525PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 2526ARB_DIS bit must be implemented in the host-dependent C3 processor power 2527state 2528support. Note, ARB_DIS is obsolete and only applies to older chipsets, 2529both 2530Intel and other vendors. (for Intel: ICH4-M and earlier) 2531 2532This change removes the code to disable/enable bus master arbitration 2533during 2534suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 2535causes 2536resume problems on some machines. The change has been in use for over 2537seven 2538years within Linux. 2539 2540Implemented two new external interfaces to support host-directed dynamic 2541ACPI 2542table load and unload. They are intended to simplify the host 2543implementation 2544of hot-plug support: 2545 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 2546 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 2547table. 2548See the ACPICA reference for additional details. Adds one new file, 2549components/tables/tbxfload.c 2550 2551Implemented and deployed two new interfaces for errors and warnings that 2552are 2553known to be caused by BIOS/firmware issues: 2554 AcpiBiosError: Prints "ACPI Firmware Error" message. 2555 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 2556Deployed these new interfaces in the ACPICA Table Manager code for ACPI 2557table 2558and FADT errors. Additional deployment to be completed as appropriate in 2559the 2560future. The associated conditional macros are ACPI_BIOS_ERROR and 2561ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 2562ACPICA 2563BZ 2564843. 2565 2566Implicit notify support: ensure that no memory allocation occurs within a 2567critical region. This fix moves a memory allocation outside of the time 2568that a 2569spinlock is held. Fixes issues on systems that do not allow this 2570behavior. 2571Jung-uk Kim. 2572 2573Split exception code utilities and tables into a new file, 2574utilities/utexcep.c 2575 2576Example Code and Data Size: These are the sizes for the OS-independent 2577acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2578debug 2579version of the code includes the debug output trace mechanism and has a 2580much 2581larger code and data size. 2582 2583 Previous Release: 2584 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2585 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2586 Current Release: 2587 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2588 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2589 2590 25912) iASL Compiler/Disassembler and Tools: 2592 2593iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 2594of 25950. Jung-uk Kim. 2596 2597Debugger: Enhanced the "tables" command to emit additional information 2598about 2599the current set of ACPI tables, including the owner ID and flags decode. 2600 2601Debugger: Reimplemented the "unload" command to use the new 2602AcpiUnloadParentTable external interface. This command was disable 2603previously 2604due to need for an unload interface. 2605 2606AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 2607option 2608will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 2609 2610---------------------------------------- 261120 June 2012. Summary of changes for version 20120620: 2612 2613 26141) ACPICA Kernel-resident Subsystem: 2615 2616Implemented support to expand the "implicit notify" feature to allow 2617multiple 2618devices to be notified by a single GPE. This feature automatically 2619generates a 2620runtime device notification in the absence of a BIOS-provided GPE control 2621method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 2622notify is 2623provided by ACPICA for Windows compatibility, and is a workaround for 2624BIOS 2625AML 2626code errors. See the description of the AcpiSetupGpeForWake interface in 2627the 2628APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 2629 2630Changed some comments and internal function names to simplify and ensure 2631correctness of the Linux code translation. No functional changes. 2632 2633Example Code and Data Size: These are the sizes for the OS-independent 2634acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2635debug 2636version of the code includes the debug output trace mechanism and has a 2637much 2638larger code and data size. 2639 2640 Previous Release: 2641 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2642 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2643 Current Release: 2644 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2645 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2646 2647 26482) iASL Compiler/Disassembler and Tools: 2649 2650Disassembler: Added support to emit short, commented descriptions for the 2651ACPI 2652predefined names in order to improve the readability of the disassembled 2653output. ACPICA BZ 959. Changes include: 2654 1) Emit descriptions for all standard predefined names (_INI, _STA, 2655_PRW, 2656etc.) 2657 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 2658 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 2659etc.) 2660 2661AcpiSrc: Fixed several long-standing Linux code translation issues. 2662Argument 2663descriptions in function headers are now translated properly to lower 2664case 2665and 2666underscores. ACPICA BZ 961. Also fixes translation problems such as 2667these: 2668(old -> new) 2669 i_aSL -> iASL 2670 00-7_f -> 00-7F 2671 16_k -> 16K 2672 local_fADT -> local_FADT 2673 execute_oSI -> execute_OSI 2674 2675iASL: Fixed a problem where null bytes were inadvertently emitted into 2676some 2677listing files. 2678 2679iASL: Added the existing debug options to the standard help screen. There 2680are 2681no longer two different help screens. ACPICA BZ 957. 2682 2683AcpiHelp: Fixed some typos in the various predefined name descriptions. 2684Also 2685expand some of the descriptions where appropriate. 2686 2687iASL: Fixed the -ot option (display compile times/statistics). Was not 2688working 2689properly for standard output; only worked for the debug file case. 2690 2691---------------------------------------- 269218 May 2012. Summary of changes for version 20120518: 2693 2694 26951) ACPICA Core Subsystem: 2696 2697Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 2698defined 2699to block until asynchronous events such as notifies and GPEs have 2700completed. 2701Within ACPICA, it is only called before a notify or GPE handler is 2702removed/uninstalled. It also may be useful for the host OS within related 2703drivers such as the Embedded Controller driver. See the ACPICA reference 2704for 2705additional information. ACPICA BZ 868. 2706 2707ACPI Tables: Added a new error message for a possible overflow failure 2708during 2709the conversion of FADT 32-bit legacy register addresses to internal 2710common 271164- 2712bit GAS structure representation. The GAS has a one-byte "bit length" 2713field, 2714thus limiting the register length to 255 bits. ACPICA BZ 953. 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: 92.9K Code, 25.0K Data, 117.9K Total 2725 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2726 Current Release: 2727 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2728 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2729 2730 27312) iASL Compiler/Disassembler and Tools: 2732 2733iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 2734macro. 2735This keyword was added late in the ACPI 5.0 release cycle and was not 2736implemented until now. 2737 2738Disassembler: Added support for Operation Region externals. Adds missing 2739support for operation regions that are defined in another table, and 2740referenced locally via a Field or BankField ASL operator. Now generates 2741the 2742correct External statement. 2743 2744Disassembler: Several additional fixes for the External() statement 2745generation 2746related to some ASL operators. Also, order the External() statements 2747alphabetically in the disassembler output. Fixes the External() 2748generation 2749for 2750the Create* field, Alias, and Scope operators: 2751 1) Create* buffer field operators - fix type mismatch warning on 2752disassembly 2753 2) Alias - implement missing External support 2754 3) Scope - fix to make sure all necessary externals are emitted. 2755 2756iASL: Improved pathname support. For include files, merge the prefix 2757pathname 2758with the file pathname and eliminate unnecessary components. Convert 2759backslashes in all pathnames to forward slashes, for readability. Include 2760file 2761pathname changes affect both #include and Include() type operators. 2762 2763iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 2764end 2765of a valid line by inserting a newline and then returning the EOF during 2766the 2767next call to GetNextLine. Prevents the line from being ignored due to EOF 2768condition. 2769 2770iASL: Implemented some changes to enhance the IDE support (-vi option.) 2771Error 2772and Warning messages are now correctly recognized for both the source 2773code 2774browser and the global error and warning counts. 2775 2776---------------------------------------- 277720 April 2012. Summary of changes for version 20120420: 2778 2779 27801) ACPICA Core Subsystem: 2781 2782Implemented support for multiple notify handlers. This change adds 2783support 2784to 2785allow multiple system and device notify handlers on Device, Thermal Zone, 2786and 2787Processor objects. This can simplify the host OS notification 2788implementation. 2789Also re-worked and restructured the entire notify support code to 2790simplify 2791handler installation, handler removal, notify event queuing, and notify 2792dispatch to handler(s). Note: there can still only be two global notify 2793handlers - one for system notifies and one for device notifies. There are 2794no 2795changes to the existing handler install/remove interfaces. Lin Ming, Bob 2796Moore, Rafael Wysocki. 2797 2798Fixed a regression in the package repair code where the object reference 2799count was calculated incorrectly. Regression was introduced in the commit 2800"Support to add Package wrappers". 2801 2802Fixed a couple possible memory leaks in the AML parser, in the error 2803recovery 2804path. Jesper Juhl, Lin Ming. 2805 2806Example Code and Data Size: These are the sizes for the OS-independent 2807acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2808debug version of the code includes the debug output trace mechanism and 2809has a 2810much larger code and data size. 2811 2812 Previous Release: 2813 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2814 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2815 Current Release: 2816 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2817 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2818 2819 28202) iASL Compiler/Disassembler and Tools: 2821 2822iASL: Fixed a problem with the resource descriptor support where the 2823length 2824of the StartDependentFn and StartDependentFnNoPrio descriptors were not 2825included in cumulative descriptor offset, resulting in incorrect values 2826for 2827resource tags within resource descriptors appearing after a 2828StartDependent* 2829descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 2830 2831iASL and Preprocessor: Implemented full support for the #line directive 2832to 2833correctly track original source file line numbers through the .i 2834preprocessor 2835output file - for error and warning messages. 2836 2837iASL: Expand the allowable byte constants for address space IDs. 2838Previously, 2839the allowable range was 0x80-0xFF (user-defined spaces), now the range is 28400x0A-0xFF to allow for custom and new IDs without changing the compiler. 2841 2842iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 2843 2844iASL: Add option to completely disable the preprocessor (-Pn). 2845 2846iASL: Now emit all error/warning messages to standard error (stderr) by 2847default (instead of the previous stdout). 2848 2849ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 2850Update 2851for resource descriptor offset fix above. Update/cleanup error output 2852routines. Enable and send iASL errors/warnings to an error logfile 2853(error.txt). Send all other iASL output to a logfile (compiler.txt). 2854Fixed 2855several extraneous "unrecognized operator" messages. 2856 2857---------------------------------------- 285820 March 2012. Summary of changes for version 20120320: 2859 2860 28611) ACPICA Core Subsystem: 2862 2863Enhanced the sleep/wake interfaces to optionally execute the _GTS method 2864(Going To Sleep) and the _BFS method (Back From Sleep). Windows 2865apparently 2866does not execute these methods, and therefore these methods are often 2867untested. It has been seen on some systems where the execution of these 2868methods causes errors and also prevents the machine from entering S5. It 2869is 2870therefore suggested that host operating systems do not execute these 2871methods 2872by default. In the future, perhaps these methods can be optionally 2873executed 2874based on the age of the system and/or what is the newest version of 2875Windows 2876that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 2877and 2878AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 2879Ming. 2880 2881Fixed a problem where the length of the local/common FADT was set too 2882early. 2883The local FADT table length cannot be set to the common length until the 2884original length has been examined. There is code that checks the table 2885length 2886and sets various fields appropriately. This can affect older machines 2887with 2888early FADT versions. For example, this can cause inadvertent writes to 2889the 2890CST_CNT register. Julian Anastasov. 2891 2892Fixed a mapping issue related to a physical table override. Use the 2893deferred 2894mapping mechanism for tables loaded via the physical override OSL 2895interface. 2896This allows for early mapping before the virtual memory manager is 2897available. 2898Thomas Renninger, Bob Moore. 2899 2900Enhanced the automatic return-object repair code: Repair a common problem 2901with 2902predefined methods that are defined to return a variable-length Package 2903of 2904sub-objects. If there is only one sub-object, some BIOS ASL code 2905mistakenly 2906simply returns the single object instead of a Package with one sub- 2907object. 2908This new support will repair this error by wrapping a Package object 2909around 2910the original object, creating the correct and expected Package with one 2911sub- 2912object. Names that can be repaired in this manner include: _ALR, _CSD, 2913_HPX, 2914_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 2915939. 2916 2917Changed the exception code returned for invalid ACPI paths passed as 2918parameters to external interfaces such as AcpiEvaluateObject. Was 2919AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 2920 2921Example Code and Data Size: These are the sizes for the OS-independent 2922acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2923debug 2924version of the code includes the debug output trace mechanism and has a 2925much 2926larger code and data size. 2927 2928 Previous Release: 2929 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2930 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2931 Current Release: 2932 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2933 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2934 2935 29362) iASL Compiler/Disassembler and Tools: 2937 2938iASL: Added the infrastructure and initial implementation of a integrated 2939C- 2940like preprocessor. This will simplify BIOS development process by 2941eliminating 2942the need for a separate preprocessing step during builds. On Windows, it 2943also 2944eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 2945features including full #define() macro support are still under 2946development. 2947These preprocessor directives are supported: 2948 #define 2949 #elif 2950 #else 2951 #endif 2952 #error 2953 #if 2954 #ifdef 2955 #ifndef 2956 #include 2957 #pragma message 2958 #undef 2959 #warning 2960In addition, these new command line options are supported: 2961 -D <symbol> Define symbol for preprocessor use 2962 -li Create preprocessed output file (*.i) 2963 -P Preprocess only and create preprocessor output file (*.i) 2964 2965Table Compiler: Fixed a problem where the equals operator within an 2966expression 2967did not work properly. 2968 2969Updated iASL to use the current versions of Bison/Flex. Updated the 2970Windows 2971project file to invoke these tools from the standard location. ACPICA BZ 2972904. 2973Versions supported: 2974 Flex for Windows: V2.5.4 2975 Bison for Windows: V2.4.1 2976 2977---------------------------------------- 297815 February 2012. Summary of changes for version 20120215: 2979 2980 29811) ACPICA Core Subsystem: 2982 2983There have been some major changes to the sleep/wake support code, as 2984described below (a - e). 2985 2986a) The AcpiLeaveSleepState has been split into two interfaces, similar to 2987AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 2988AcpiLeaveSleepStatePrep. This allows the host to perform actions between 2989the 2990time the _BFS method is called and the _WAK method is called. NOTE: all 2991hosts 2992must update their wake/resume code or else sleep/wake will not work 2993properly. 2994Rafael Wysocki. 2995 2996b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 2997_WAK 2998method. Some machines require that the GPEs are enabled before the _WAK 2999method 3000is executed. Thomas Renninger. 3001 3002c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 3003bit. 3004Some BIOS code assumes that WAK_STS will be cleared on resume and use it 3005to 3006determine whether the system is rebooting or resuming. Matthew Garrett. 3007 3008d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 3009Sleep) to 3010match the ACPI specification requirement. Rafael Wysocki. 3011 3012e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 3013registers within the V5 FADT. This support adds two new files: 3014hardware/hwesleep.c implements the support for the new registers. Moved 3015all 3016sleep/wake external interfaces to hardware/hwxfsleep.c. 3017 3018 3019Added a new OSL interface for ACPI table overrides, 3020AcpiOsPhysicalTableOverride. This interface allows the host to override a 3021table via a physical address, instead of the logical address required by 3022AcpiOsTableOverride. This simplifies the host implementation. Initial 3023implementation by Thomas Renninger. The ACPICA implementation creates a 3024single 3025shared function for table overrides that attempts both a logical and a 3026physical override. 3027 3028Expanded the OSL memory read/write interfaces to 64-bit data 3029(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 3030transfer support for GAS register structures passed to AcpiRead and 3031AcpiWrite. 3032 3033Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 3034custom 3035build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 3036model. 3037See the ACPICA reference for details. ACPICA BZ 942. This option removes 3038about 303910% of the code and 5% of the static data, and the following hardware 3040ACPI 3041features become unavailable: 3042 PM Event and Control registers 3043 SCI interrupt (and handler) 3044 Fixed Events 3045 General Purpose Events (GPEs) 3046 Global Lock 3047 ACPI PM timer 3048 FACS table (Waking vectors and Global Lock) 3049 3050Updated the unix tarball directory structure to match the ACPICA git 3051source 3052tree. This ensures that the generic unix makefiles work properly (in 3053generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 3054867. 3055 3056Updated the return value of the _REV predefined method to integer value 5 3057to 3058reflect ACPI 5.0 support. 3059 3060Moved the external ACPI PM timer interface prototypes to the public 3061acpixf.h 3062file where they belong. 3063 3064Example Code and Data Size: These are the sizes for the OS-independent 3065acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3066debug 3067version of the code includes the debug output trace mechanism and has a 3068much 3069larger code and data size. 3070 3071 Previous Release: 3072 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3073 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3074 Current Release: 3075 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3076 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3077 3078 30792) iASL Compiler/Disassembler and Tools: 3080 3081Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 3082descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 3083incorrectly displayed. 3084 3085AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 3086specification. 3087 3088---------------------------------------- 308911 January 2012. Summary of changes for version 20120111: 3090 3091 30921) ACPICA Core Subsystem: 3093 3094Implemented a new mechanism to allow host device drivers to check for 3095address 3096range conflicts with ACPI Operation Regions. Both SystemMemory and 3097SystemIO 3098address spaces are supported. A new external interface, 3099AcpiCheckAddressRange, 3100allows drivers to check an address range against the ACPI namespace. See 3101the 3102ACPICA reference for additional details. Adds one new file, 3103utilities/utaddress.c. Lin Ming, Bob Moore. 3104 3105Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 3106Control 3107and 3108Status registers, update the ACPI 5.0 flags, and update internal data 3109structures to handle an FADT larger than 256 bytes. The size of the ACPI 31105.0 3111FADT is 268 bytes. 3112 3113Updated all ACPICA copyrights and signons to 2012. Added the 2012 3114copyright to 3115all module headers and signons, including the standard Linux header. This 3116affects virtually every file in the ACPICA core subsystem, iASL compiler, 3117and 3118all ACPICA utilities. 3119 3120Example Code and Data Size: These are the sizes for the OS-independent 3121acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3122debug 3123version of the code includes the debug output trace mechanism and has a 3124much 3125larger code and data size. 3126 3127 Previous Release: 3128 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3129 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3130 Current Release: 3131 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3132 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3133 3134 31352) iASL Compiler/Disassembler and Tools: 3136 3137Disassembler: fixed a problem with the automatic resource tag generation 3138support. Fixes a problem where the resource tags are inadvertently not 3139constructed if the table being disassembled contains external references 3140to 3141control methods. Moved the actual construction of the tags to after the 3142final 3143namespace is constructed (after 2nd parse is invoked due to external 3144control 3145method references.) ACPICA BZ 941. 3146 3147Table Compiler: Make all "generic" operators caseless. These are the 3148operators 3149like UINT8, String, etc. Making these caseless improves ease-of-use. 3150ACPICA BZ 3151934. 3152 3153---------------------------------------- 315423 November 2011. Summary of changes for version 20111123: 3155 31560) ACPI 5.0 Support: 3157 3158This release contains full support for the ACPI 5.0 specification, as 3159summarized below. 3160 3161Reduced Hardware Support: 3162------------------------- 3163 3164This support allows for ACPI systems without the usual ACPI hardware. 3165This 3166support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 3167will 3168not attempt to initialize or use any of the usual ACPI hardware. Note, 3169when 3170this flag is set, all of the following ACPI hardware is assumed to be not 3171present and is not initialized or accessed: 3172 3173 General Purpose Events (GPEs) 3174 Fixed Events (PM1a/PM1b and PM Control) 3175 Power Management Timer and Console Buttons (power/sleep) 3176 Real-time Clock Alarm 3177 Global Lock 3178 System Control Interrupt (SCI) 3179 The FACS is assumed to be non-existent 3180 3181ACPI Tables: 3182------------ 3183 3184All new tables and updates to existing tables are fully supported in the 3185ACPICA headers (for use by device drivers), the disassembler, and the 3186iASL 3187Data Table Compiler. ACPI 5.0 defines these new tables: 3188 3189 BGRT /* Boot Graphics Resource Table */ 3190 DRTM /* Dynamic Root of Trust for Measurement table */ 3191 FPDT /* Firmware Performance Data Table */ 3192 GTDT /* Generic Timer Description Table */ 3193 MPST /* Memory Power State Table */ 3194 PCCT /* Platform Communications Channel Table */ 3195 PMTT /* Platform Memory Topology Table */ 3196 RASF /* RAS Feature table */ 3197 3198Operation Regions/SpaceIDs: 3199--------------------------- 3200 3201All new operation regions are fully supported by the iASL compiler, the 3202disassembler, and the ACPICA runtime code (for dispatch to region 3203handlers.) 3204The new operation region Space IDs are: 3205 3206 GeneralPurposeIo 3207 GenericSerialBus 3208 3209Resource Descriptors: 3210--------------------- 3211 3212All new ASL resource descriptors are fully supported by the iASL 3213compiler, 3214the 3215ASL/AML disassembler, and the ACPICA runtime Resource Manager code 3216(including 3217all new predefined resource tags). New descriptors are: 3218 3219 FixedDma 3220 GpioIo 3221 GpioInt 3222 I2cSerialBus 3223 SpiSerialBus 3224 UartSerialBus 3225 3226ASL/AML Operators, New and Modified: 3227------------------------------------ 3228 3229One new operator is added, the Connection operator, which is used to 3230associate 3231a GeneralPurposeIo or GenericSerialBus resource descriptor with 3232individual 3233field objects within an operation region. Several new protocols are 3234associated 3235with the AccessAs operator. All are fully supported by the iASL compiler, 3236disassembler, and runtime ACPICA AML interpreter: 3237 3238 Connection // Declare Field Connection 3239attributes 3240 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 3241 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 3242Protocol 3243 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 3244 RawDataBuffer // Data type for Vendor Data 3245fields 3246 3247Predefined ASL/AML Objects: 3248--------------------------- 3249 3250All new predefined objects/control-methods are supported by the iASL 3251compiler 3252and the ACPICA runtime validation/repair (arguments and return values.) 3253New 3254predefined names include the following: 3255 3256Standard Predefined Names (Objects or Control Methods): 3257 _AEI, _CLS, _CPC, _CWS, _DEP, 3258 _DLM, _EVT, _GCP, _CRT, _GWS, 3259 _HRV, _PRE, _PSE, _SRT, _SUB. 3260 3261Resource Tags (Names used to access individual fields within resource 3262descriptors): 3263 _DBT, _DPL, _DRS, _END, _FLC, 3264 _IOR, _LIN, _MOD, _PAR, _PHA, 3265 _PIN, _PPI, _POL, _RXL, _SLV, 3266 _SPE, _STB, _TXL, _VEN. 3267 3268ACPICA External Interfaces: 3269--------------------------- 3270 3271Several new interfaces have been defined for use by ACPI-related device 3272drivers and other host OS services: 3273 3274AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 3275to 3276acquire and release AML mutexes that are defined in the DSDT/SSDT tables 3277provided by the BIOS. They are intended to be used in conjunction with 3278the 3279ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 3280mutual exclusion with the AML code/interpreter. 3281 3282AcpiGetEventResources: Returns the (formatted) resource descriptors as 3283defined 3284by the ACPI 5.0 _AEI object (ACPI Event Information). This object 3285provides 3286resource descriptors associated with hardware-reduced platform events, 3287similar 3288to the AcpiGetCurrentResources interface. 3289 3290Operation Region Handlers: For General Purpose IO and Generic Serial Bus 3291operation regions, information about the Connection() object and any 3292optional 3293length information is passed to the region handler within the Context 3294parameter. 3295 3296AcpiBufferToResource: This interface converts a raw AML buffer containing 3297a 3298resource template or resource descriptor to the ACPI_RESOURCE internal 3299format 3300suitable for use by device drivers. Can be used by an operation region 3301handler 3302to convert the Connection() buffer object into a ACPI_RESOURCE. 3303 3304Miscellaneous/Tools/TestSuites: 3305------------------------------- 3306 3307Support for extended _HID names (Four alpha characters instead of three). 3308Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 3309Support for ACPI 5.0 features in the ASLTS test suite. 3310Fully updated documentation (ACPICA and iASL reference documents.) 3311 3312ACPI Table Definition Language: 3313------------------------------- 3314 3315Support for this language was implemented and released as a subsystem of 3316the 3317iASL compiler in 2010. (See the iASL compiler User Guide.) 3318 3319 3320Non-ACPI 5.0 changes for this release: 3321-------------------------------------- 3322 33231) ACPICA Core Subsystem: 3324 3325Fix a problem with operation region declarations where a failure can 3326occur 3327if 3328the region name and an argument that evaluates to an object (such as the 3329region address) are in different namespace scopes. Lin Ming, ACPICA BZ 3330937. 3331 3332Do not abort an ACPI table load if an invalid space ID is found within. 3333This 3334will be caught later if the offending method is executed. ACPICA BZ 925. 3335 3336Fixed an issue with the FFixedHW space ID where the ID was not always 3337recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 3338 3339Fixed a problem with the 32-bit generation of the unix-specific OSL 3340(osunixxf.c). Lin Ming, ACPICA BZ 936. 3341 3342Several changes made to enable generation with the GCC 4.6 compiler. 3343ACPICA BZ 3344935. 3345 3346New error messages: Unsupported I/O requests (not 8/16/32 bit), and 3347Index/Bank 3348field registers out-of-range. 3349 33502) iASL Compiler/Disassembler and Tools: 3351 3352iASL: Implemented the __PATH__ operator, which returns the full pathname 3353of 3354the current source file. 3355 3356AcpiHelp: Automatically display expanded keyword information for all ASL 3357operators. 3358 3359Debugger: Add "Template" command to disassemble/dump resource template 3360buffers. 3361 3362Added a new master script to generate and execute the ASLTS test suite. 3363Automatically handles 32- and 64-bit generation. See tests/aslts.sh 3364 3365iASL: Fix problem with listing generation during processing of the 3366Switch() 3367operator where AML listing was disabled until the entire Switch block was 3368completed. 3369 3370iASL: Improve support for semicolon statement terminators. Fix "invalid 3371character" message for some cases when the semicolon is used. Semicolons 3372are 3373now allowed after every <Term> grammar element. ACPICA BZ 927. 3374 3375iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 3376923. 3377 3378Disassembler: Fix problem with disassembly of the DataTableRegion 3379operator 3380where an inadvertent "Unhandled deferred opcode" message could be 3381generated. 3382 33833) Example Code and Data Size 3384 3385These are the sizes for the OS-independent acpica.lib produced by the 3386Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3387includes the debug output trace mechanism and has a much larger code and 3388data 3389size. 3390 3391 Previous Release: 3392 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3393 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3394 Current Release: 3395 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3396 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3397 3398---------------------------------------- 339922 September 2011. Summary of changes for version 20110922: 3400 34010) ACPI 5.0 News: 3402 3403Support for ACPI 5.0 in ACPICA has been underway for several months and 3404will 3405be released at the same time that ACPI 5.0 is officially released. 3406 3407The ACPI 5.0 specification is on track for release in the next few 3408months. 3409 34101) ACPICA Core Subsystem: 3411 3412Fixed a problem where the maximum sleep time for the Sleep() operator was 3413intended to be limited to two seconds, but was inadvertently limited to 341420 3415seconds instead. 3416 3417Linux and Unix makefiles: Added header file dependencies to ensure 3418correct 3419generation of ACPICA core code and utilities. Also simplified the 3420makefiles 3421considerably through the use of the vpath variable to specify search 3422paths. 3423ACPICA BZ 924. 3424 34252) iASL Compiler/Disassembler and Tools: 3426 3427iASL: Implemented support to check the access length for all fields 3428created to 3429access named Resource Descriptor fields. For example, if a resource field 3430is 3431defined to be two bits, a warning is issued if a CreateXxxxField() is 3432used 3433with an incorrect bit length. This is implemented for all current 3434resource 3435descriptor names. ACPICA BZ 930. 3436 3437Disassembler: Fixed a byte ordering problem with the output of 24-bit and 343856- 3439bit integers. 3440 3441iASL: Fixed a couple of issues associated with variable-length package 3442objects. 1) properly handle constants like One, Ones, Zero -- do not make 3443a 3444VAR_PACKAGE when these are used as a package length. 2) Allow the 3445VAR_PACKAGE 3446opcode (in addition to PACKAGE) when validating object types for 3447predefined 3448names. 3449 3450iASL: Emit statistics for all output files (instead of just the ASL input 3451and 3452AML output). Includes listings, hex files, etc. 3453 3454iASL: Added -G option to the table compiler to allow the compilation of 3455custom 3456ACPI tables. The only part of a table that is required is the standard 345736- 3458byte 3459ACPI header. 3460 3461AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 3462headers), 3463which also adds correct 64-bit support. Also, now all output filenames 3464are 3465completely lower case. 3466 3467AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 3468loading table files. A warning is issued for any such tables. The only 3469exception is an FADT. This also fixes a possible fault when attempting to 3470load 3471non-AML tables. ACPICA BZ 932. 3472 3473AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 3474a 3475missing table terminator could cause a fault when using the -p option. 3476 3477AcpiSrc: Fixed a possible divide-by-zero fault when generating file 3478statistics. 3479 34803) Example Code and Data Size 3481 3482These are the sizes for the OS-independent acpica.lib produced by the 3483Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3484includes the debug output trace mechanism and has a much larger code and 3485data 3486size. 3487 3488 Previous Release (VC 9.0): 3489 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3490 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3491 Current Release (VC 9.0): 3492 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3493 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3494 3495 3496---------------------------------------- 349723 June 2011. Summary of changes for version 20110623: 3498 34991) ACPI CA Core Subsystem: 3500 3501Updated the predefined name repair mechanism to not attempt repair of a 3502_TSS 3503return object if a _PSS object is present. We can only sort the _TSS 3504return 3505package if there is no _PSS within the same scope. This is because if 3506_PSS 3507is 3508present, the ACPI specification dictates that the _TSS Power Dissipation 3509field 3510is to be ignored, and therefore some BIOSs leave garbage values in the 3511_TSS 3512Power field(s). In this case, it is best to just return the _TSS package 3513as- 3514is. Reported by, and fixed with assistance from Fenghua Yu. 3515 3516Added an option to globally disable the control method return value 3517validation 3518and repair. This runtime option can be used to disable return value 3519repair 3520if 3521this is causing a problem on a particular machine. Also added an option 3522to 3523AcpiExec (-dr) to set this disable flag. 3524 3525All makefiles and project files: Major changes to improve generation of 3526ACPICA 3527tools. ACPICA BZ 912: 3528 Reduce default optimization levels to improve compatibility 3529 For Linux, add strict-aliasing=0 for gcc 4 3530 Cleanup and simplify use of command line defines 3531 Cleanup multithread library support 3532 Improve usage messages 3533 3534Linux-specific header: update handling of THREAD_ID and pthread. For the 353532- 3536bit case, improve casting to eliminate possible warnings, especially with 3537the 3538acpica tools. 3539 3540Example Code and Data Size: These are the sizes for the OS-independent 3541acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3542debug 3543version of the code includes the debug output trace mechanism and has a 3544much 3545larger code and data size. 3546 3547 Previous Release (VC 9.0): 3548 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3549 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3550 Current Release (VC 9.0): 3551 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3552 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3553 35542) iASL Compiler/Disassembler and Tools: 3555 3556With this release, a new utility named "acpihelp" has been added to the 3557ACPICA 3558package. This utility summarizes the ACPI specification chapters for the 3559ASL 3560and AML languages. It generates under Linux/Unix as well as Windows, and 3561provides the following functionality: 3562 Find/display ASL operator(s) -- with description and syntax. 3563 Find/display ASL keyword(s) -- with exact spelling and descriptions. 3564 Find/display ACPI predefined name(s) -- with description, number 3565 of arguments, and the return value data type. 3566 Find/display AML opcode name(s) -- with opcode, arguments, and 3567grammar. 3568 Decode/display AML opcode -- with opcode name, arguments, and 3569grammar. 3570 3571Service Layers: Make multi-thread support configurable. Conditionally 3572compile 3573the multi-thread support so that threading libraries will not be linked 3574if 3575not 3576necessary. The only tool that requires multi-thread support is AcpiExec. 3577 3578iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 3579of 3580Bison appear to want the interface to yyerror to be a const char * (or at 3581least this is a problem when generating iASL on some systems.) ACPICA BZ 3582923 3583Pierre Lejeune. 3584 3585Tools: Fix for systems where O_BINARY is not defined. Only used for 3586Windows 3587versions of the tools. 3588 3589---------------------------------------- 359027 May 2011. Summary of changes for version 20110527: 3591 35921) ACPI CA Core Subsystem: 3593 3594ASL Load() operator: Reinstate most restrictions on the incoming ACPI 3595table 3596signature. Now, only allow SSDT, OEMx, and a null signature. History: 3597 1) Originally, we checked the table signature for "SSDT" or "PSDT". 3598 (PSDT is now obsolete.) 3599 2) We added support for OEMx tables, signature "OEM" plus a fourth 3600 "don't care" character. 3601 3) Valid tables were encountered with a null signature, so we just 3602 gave up on validating the signature, (05/2008). 3603 4) We encountered non-AML tables such as the MADT, which caused 3604 interpreter errors and kernel faults. So now, we once again allow 3605 only SSDT, OEMx, and now, also a null signature. (05/2011). 3606 3607Added the missing _TDL predefined name to the global name list in order 3608to 3609enable validation. Affects both the core ACPICA code and the iASL 3610compiler. 3611 3612Example Code and Data Size: These are the sizes for the OS-independent 3613acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3614debug 3615version of the code includes the debug output trace mechanism and has a 3616much 3617larger code and data size. 3618 3619 Previous Release (VC 9.0): 3620 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3621 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3622 Current Release (VC 9.0): 3623 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3624 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3625 36262) iASL Compiler/Disassembler and Tools: 3627 3628Debugger/AcpiExec: Implemented support for "complex" method arguments on 3629the 3630debugger command line. This adds support beyond simple integers -- 3631including 3632Strings, Buffers, and Packages. Includes support for nested packages. 3633Increased the default command line buffer size to accommodate these 3634arguments. 3635See the ACPICA reference for details and syntax. ACPICA BZ 917. 3636 3637Debugger/AcpiExec: Implemented support for "default" method arguments for 3638the 3639Execute/Debug command. Now, the debugger will always invoke a control 3640method 3641with the required number of arguments -- even if the command line 3642specifies 3643none or insufficient arguments. It uses default integer values for any 3644missing 3645arguments. Also fixes a bug where only six method arguments maximum were 3646supported instead of the required seven. 3647 3648Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 3649and 3650also return status in order to prevent buffer overruns. See the ACPICA 3651reference for details and syntax. ACPICA BZ 921 3652 3653iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 3654makefiles to simplify support for the two different but similar parser 3655generators, bison and yacc. 3656 3657Updated the generic unix makefile for gcc 4. The default gcc version is 3658now 3659expected to be 4 or greater, since options specific to gcc 4 are used. 3660 3661---------------------------------------- 366213 April 2011. Summary of changes for version 20110413: 3663 36641) ACPI CA Core Subsystem: 3665 3666Implemented support to execute a so-called "orphan" _REG method under the 3667EC 3668device. This change will force the execution of a _REG method underneath 3669the 3670EC 3671device even if there is no corresponding operation region of type 3672EmbeddedControl. Fixes a problem seen on some machines and apparently is 3673compatible with Windows behavior. ACPICA BZ 875. 3674 3675Added more predefined methods that are eligible for automatic NULL 3676package 3677element removal. This change adds another group of predefined names to 3678the 3679list 3680of names that can be repaired by having NULL package elements dynamically 3681removed. This group are those methods that return a single variable- 3682length 3683package containing simple data types such as integers, buffers, strings. 3684This 3685includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 3686_PSL, 3687_Sx, 3688and _TZD. ACPICA BZ 914. 3689 3690Split and segregated all internal global lock functions to a new file, 3691evglock.c. 3692 3693Updated internal address SpaceID for DataTable regions. Moved this 3694internal 3695space 3696id in preparation for ACPI 5.0 changes that will include some new space 3697IDs. 3698This 3699change should not affect user/host code. 3700 3701Example Code and Data Size: These are the sizes for the OS-independent 3702acpica.lib 3703produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3704version of 3705the code includes the debug output trace mechanism and has a much larger 3706code 3707and 3708data size. 3709 3710 Previous Release (VC 9.0): 3711 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3712 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3713 Current Release (VC 9.0): 3714 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3715 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3716 37172) iASL Compiler/Disassembler and Tools: 3718 3719iASL/DTC: Major update for new grammar features. Allow generic data types 3720in 3721custom ACPI tables. Field names are now optional. Any line can be split 3722to 3723multiple lines using the continuation char (\). Large buffers now use 3724line- 3725continuation character(s) and no colon on the continuation lines. See the 3726grammar 3727update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 3728Moore. 3729 3730iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 3731statements. 3732Since the parser stuffs a "zero" as the return value for these statements 3733(due 3734to 3735the underlying AML grammar), they were seen as "return with value" by the 3736iASL 3737semantic checking. They are now seen correctly as "null" return 3738statements. 3739 3740iASL: Check if a_REG declaration has a corresponding Operation Region. 3741Adds a 3742check for each _REG to ensure that there is in fact a corresponding 3743operation 3744region declaration in the same scope. If not, the _REG method is not very 3745useful 3746since it probably won't be executed. ACPICA BZ 915. 3747 3748iASL/DTC: Finish support for expression evaluation. Added a new 3749expression 3750parser 3751that implements c-style operator precedence and parenthesization. ACPICA 3752bugzilla 3753908. 3754 3755Disassembler/DTC: Remove support for () and <> style comments in data 3756tables. 3757Now 3758that DTC has full expression support, we don't want to have comment 3759strings 3760that 3761start with a parentheses or a less-than symbol. Now, only the standard /* 3762and 3763// 3764comments are supported, as well as the bracket [] comments. 3765 3766AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 3767"unusual" 3768headers in the acpidump file. Update the header validation to support 3769these 3770tables. Problem introduced in previous AcpiXtract version in the change 3771to 3772support "wrong checksum" error messages emitted by acpidump utility. 3773 3774iASL: Add a * option to generate all template files (as a synonym for 3775ALL) 3776as 3777in 3778"iasl -T *" or "iasl -T ALL". 3779 3780iASL/DTC: Do not abort compiler on fatal errors. We do not want to 3781completely 3782abort the compiler on "fatal" errors, simply should abort the current 3783compile. 3784This allows multiple compiles with a single (possibly wildcard) compiler 3785invocation. 3786 3787---------------------------------------- 378816 March 2011. Summary of changes for version 20110316: 3789 37901) ACPI CA Core Subsystem: 3791 3792Fixed a problem caused by a _PRW method appearing at the namespace root 3793scope 3794during the setup of wake GPEs. A fault could occur if a _PRW directly 3795under 3796the 3797root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 3798 3799Implemented support for "spurious" Global Lock interrupts. On some 3800systems, a 3801global lock interrupt can occur without the pending flag being set. Upon 3802a 3803GL 3804interrupt, we now ensure that a thread is actually waiting for the lock 3805before 3806signaling GL availability. Rafael Wysocki, Bob Moore. 3807 3808Example Code and Data Size: These are the sizes for the OS-independent 3809acpica.lib 3810produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3811version of 3812the code includes the debug output trace mechanism and has a much larger 3813code 3814and 3815data size. 3816 3817 Previous Release (VC 9.0): 3818 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3819 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3820 Current Release (VC 9.0): 3821 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3822 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3823 38242) iASL Compiler/Disassembler and Tools: 3825 3826Implemented full support for the "SLIC" ACPI table. Includes support in 3827the 3828header files, disassembler, table compiler, and template generator. Bob 3829Moore, 3830Lin Ming. 3831 3832AcpiXtract: Correctly handle embedded comments and messages from 3833AcpiDump. 3834Apparently some or all versions of acpidump will occasionally emit a 3835comment 3836like 3837"Wrong checksum", etc., into the dump file. This was causing problems for 3838AcpiXtract. ACPICA BZ 905. 3839 3840iASL: Fix the Linux makefile by removing an inadvertent double file 3841inclusion. 3842ACPICA BZ 913. 3843 3844AcpiExec: Update installation of operation region handlers. Install one 3845handler 3846for a user-defined address space. This is used by the ASL test suite 3847(ASLTS). 3848 3849---------------------------------------- 385011 February 2011. Summary of changes for version 20110211: 3851 38521) ACPI CA Core Subsystem: 3853 3854Added a mechanism to defer _REG methods for some early-installed 3855handlers. 3856Most user handlers should be installed before call to 3857AcpiEnableSubsystem. 3858However, Event handlers and region handlers should be installed after 3859AcpiInitializeObjects. Override handlers for the "default" regions should 3860be 3861installed early, however. This change executes all _REG methods for the 3862default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 3863chicken/egg issues between them. ACPICA BZ 848. 3864 3865Implemented an optimization for GPE detection. This optimization will 3866simply 3867ignore GPE registers that contain no enabled GPEs -- there is no need to 3868read the register since this information is available internally. This 3869becomes more important on machines with a large GPE space. ACPICA 3870bugzilla 3871884. Lin Ming. Suggestion from Joe Liu. 3872 3873Removed all use of the highly unreliable FADT revision field. The 3874revision 3875number in the FADT has been found to be completely unreliable and cannot 3876be 3877trusted. Only the actual table length can be used to infer the version. 3878This 3879change updates the ACPICA core and the disassembler so that both no 3880longer 3881even look at the FADT version and instead depend solely upon the FADT 3882length. 3883 3884Fix an unresolved name issue for the no-debug and no-error-message source 3885generation cases. The _AcpiModuleName was left undefined in these cases, 3886but 3887it is actually needed as a parameter to some interfaces. Define 3888_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 3889 3890Split several large files (makefiles and project files updated) 3891 utglobal.c -> utdecode.c 3892 dbcomds.c -> dbmethod.c dbnames.c 3893 dsopcode.c -> dsargs.c dscontrol.c 3894 dsload.c -> dsload2.c 3895 aslanalyze.c -> aslbtypes.c aslwalks.c 3896 3897Example Code and Data Size: These are the sizes for the OS-independent 3898acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3899debug version of the code includes the debug output trace mechanism and 3900has 3901a much larger code and data size. 3902 3903 Previous Release (VC 9.0): 3904 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3905 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3906 Current Release (VC 9.0): 3907 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3908 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3909 39102) iASL Compiler/Disassembler and Tools: 3911 3912iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 3913These are useful C-style macros with the standard definitions. ACPICA 3914bugzilla 898. 3915 3916iASL/DTC: Added support for integer expressions and labels. Support for 3917full 3918expressions for all integer fields in all ACPI tables. Support for labels 3919in 3920"generic" portions of tables such as UEFI. See the iASL reference manual. 3921 3922Debugger: Added a command to display the status of global handlers. The 3923"handlers" command will display op region, fixed event, and miscellaneous 3924global handlers. installation status -- and for op regions, whether 3925default 3926or user-installed handler will be used. 3927 3928iASL: Warn if reserved method incorrectly returns a value. Many 3929predefined 3930names are defined such that they do not return a value. If implemented as 3931a 3932method, issue a warning if such a name explicitly returns a value. ACPICA 3933Bugzilla 855. 3934 3935iASL: Added detection of GPE method name conflicts. Detects a conflict 3936where 3937there are two GPE methods of the form _Lxy and _Exy in the same scope. 3938(For 3939example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 3940 3941iASL/DTC: Fixed a couple input scanner issues with comments and line 3942numbers. Comment remover could get confused and miss a comment ending. 3943Fixed 3944a problem with line counter maintenance. 3945 3946iASL/DTC: Reduced the severity of some errors from fatal to error. There 3947is 3948no need to abort on simple errors within a field definition. 3949 3950Debugger: Simplified the output of the help command. All help output now 3951in 3952a single screen, instead of help subcommands. ACPICA Bugzilla 897. 3953 3954---------------------------------------- 395512 January 2011. Summary of changes for version 20110112: 3956 39571) ACPI CA Core Subsystem: 3958 3959Fixed a race condition between method execution and namespace walks that 3960can 3961possibly cause a fault. The problem was apparently introduced in version 396220100528 as a result of a performance optimization that reduces the 3963number 3964of 3965namespace walks upon method exit by using the delete_namespace_subtree 3966function instead of the delete_namespace_by_owner function used 3967previously. 3968Bug is a missing namespace lock in the delete_namespace_subtree function. 3969dana.myers@oracle.com 3970 3971Fixed several issues and a possible fault with the automatic "serialized" 3972method support. History: This support changes a method to "serialized" on 3973the 3974fly if the method generates an AE_ALREADY_EXISTS error, indicating the 3975possibility that it cannot handle reentrancy. This fix repairs a couple 3976of 3977issues seen in the field, especially on machines with many cores: 3978 3979 1) Delete method children only upon the exit of the last thread, 3980 so as to not delete objects out from under other running threads 3981 (and possibly causing a fault.) 3982 2) Set the "serialized" bit for the method only upon the exit of the 3983 Last thread, so as to not cause deadlock when running threads 3984 attempt to exit. 3985 3) Cleanup the use of the AML "MethodFlags" and internal method flags 3986 so that there is no longer any confusion between the two. 3987 3988 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 3989 3990Debugger: Now lock the namespace for duration of a namespace dump. 3991Prevents 3992issues if the namespace is changing dynamically underneath the debugger. 3993Especially affects temporary namespace nodes, since the debugger displays 3994these also. 3995 3996Updated the ordering of include files. The ACPICA headers should appear 3997before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 3998set 3999any necessary compiler-specific defines, etc. Affects the ACPI-related 4000tools 4001and utilities. 4002 4003Updated all ACPICA copyrights and signons to 2011. Added the 2011 4004copyright 4005to all module headers and signons, including the Linux header. This 4006affects 4007virtually every file in the ACPICA core subsystem, iASL compiler, and all 4008utilities. 4009 4010Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 4011project files for VC++ 6.0 are now obsolete. New project files can be 4012found 4013under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 4014details. 4015 4016Example Code and Data Size: These are the sizes for the OS-independent 4017acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4018debug version of the code includes the debug output trace mechanism and 4019has a 4020much larger code and data size. 4021 4022 Previous Release (VC 6.0): 4023 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4024 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4025 Current Release (VC 9.0): 4026 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4027 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4028 40292) iASL Compiler/Disassembler and Tools: 4030 4031iASL: Added generic data types to the Data Table compiler. Add "generic" 4032data 4033types such as UINT32, String, Unicode, etc., to simplify the generation 4034of 4035platform-defined tables such as UEFI. Lin Ming. 4036 4037iASL: Added listing support for the Data Table Compiler. Adds listing 4038support 4039(-l) to display actual binary output for each line of input code. 4040 4041---------------------------------------- 404209 December 2010. Summary of changes for version 20101209: 4043 40441) ACPI CA Core Subsystem: 4045 4046Completed the major overhaul of the GPE support code that was begun in 4047July 40482010. Major features include: removal of _PRW execution in ACPICA (host 4049executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 4050changes to existing interfaces, simplification of GPE handler operation, 4051and 4052a handful of new interfaces: 4053 4054 AcpiUpdateAllGpes 4055 AcpiFinishGpe 4056 AcpiSetupGpeForWake 4057 AcpiSetGpeWakeMask 4058 One new file, evxfgpe.c to consolidate all external GPE interfaces. 4059 4060See the ACPICA Programmer Reference for full details and programming 4061information. See the new section 4.4 "General Purpose Event (GPE) 4062Support" 4063for a full overview, and section 8.7 "ACPI General Purpose Event 4064Management" 4065for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 4066Ming, 4067Bob Moore, Rafael Wysocki. 4068 4069Implemented a new GPE feature for Windows compatibility, the "Implicit 4070Wake 4071GPE Notify". This feature will automatically issue a Notify(2) on a 4072device 4073when a Wake GPE is received if there is no corresponding GPE method or 4074handler. ACPICA BZ 870. 4075 4076Fixed a problem with the Scope() operator during table parse and load 4077phase. 4078During load phase (table load or method execution), the scope operator 4079should 4080not enter the target into the namespace. Instead, it should open a new 4081scope 4082at the target location. Linux BZ 19462, ACPICA BZ 882. 4083 4084Example Code and Data Size: These are the sizes for the OS-independent 4085acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4086debug version of the code includes the debug output trace mechanism and 4087has a 4088much larger code and data size. 4089 4090 Previous Release: 4091 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4092 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4093 Current Release: 4094 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4095 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4096 40972) iASL Compiler/Disassembler and Tools: 4098 4099iASL: Relax the alphanumeric restriction on _CID strings. These strings 4100are 4101"bus-specific" per the ACPI specification, and therefore any characters 4102are 4103acceptable. The only checks that can be performed are for a null string 4104and 4105perhaps for a leading asterisk. ACPICA BZ 886. 4106 4107iASL: Fixed a problem where a syntax error that caused a premature EOF 4108condition on the source file emitted a very confusing error message. The 4109premature EOF is now detected correctly. ACPICA BZ 891. 4110 4111Disassembler: Decode the AccessSize within a Generic Address Structure 4112(byte 4113access, word access, etc.) Note, this field does not allow arbitrary bit 4114access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 4115 4116New: AcpiNames utility - Example namespace dump utility. Shows an example 4117of 4118ACPICA configuration for a minimal namespace dump utility. Uses table and 4119namespace managers, but no AML interpreter. Does not add any 4120functionality 4121over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 4122partition and configure ACPICA. ACPICA BZ 883. 4123 4124AML Debugger: Increased the debugger buffer size for method return 4125objects. 4126Was 4K, increased to 16K. Also enhanced error messages for debugger 4127method 4128execution, including the buffer overflow case. 4129 4130---------------------------------------- 413113 October 2010. Summary of changes for version 20101013: 4132 41331) ACPI CA Core Subsystem: 4134 4135Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 4136now 4137clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 4138HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 4139 4140Changed the type of the predefined namespace object _TZ from ThermalZone 4141to 4142Device. This was found to be confusing to the host software that 4143processes 4144the various thermal zones, since _TZ is not really a ThermalZone. 4145However, 4146a 4147Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 4148Zhang. 4149 4150Added Windows Vista SP2 to the list of supported _OSI strings. The actual 4151string is "Windows 2006 SP2". 4152 4153Eliminated duplicate code in AcpiUtExecute* functions. Now that the 4154nsrepair 4155code automatically repairs _HID-related strings, this type of code is no 4156longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 4157878. 4158 4159Example Code and Data Size: These are the sizes for the OS-independent 4160acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4161debug version of the code includes the debug output trace mechanism and 4162has a 4163much larger code and data size. 4164 4165 Previous Release: 4166 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4167 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4168 Current Release: 4169 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4170 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4171 41722) iASL Compiler/Disassembler and Tools: 4173 4174iASL: Implemented additional compile-time validation for _HID strings. 4175The 4176non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 4177length 4178of 4179the string must be exactly seven or eight characters. For both _HID and 4180_CID 4181strings, all characters must be alphanumeric. ACPICA BZ 874. 4182 4183iASL: Allow certain "null" resource descriptors. Some BIOS code creates 4184descriptors that are mostly or all zeros, with the expectation that they 4185will 4186be filled in at runtime. iASL now allows this as long as there is a 4187"resource 4188tag" (name) associated with the descriptor, which gives the ASL a handle 4189needed to modify the descriptor. ACPICA BZ 873. 4190 4191Added single-thread support to the generic Unix application OSL. 4192Primarily 4193for iASL support, this change removes the use of semaphores in the 4194single- 4195threaded ACPICA tools/applications - increasing performance. The 4196_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 4197option. ACPICA BZ 879. 4198 4199AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 4200support 4201for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 4202 4203iASL: Moved all compiler messages to a new file, aslmessages.h. 4204 4205---------------------------------------- 420615 September 2010. Summary of changes for version 20100915: 4207 42081) ACPI CA Core Subsystem: 4209 4210Removed the AcpiOsDerivePciId OSL interface. The various host 4211implementations 4212of this function were not OS-dependent and are now obsolete and can be 4213removed from all host OSLs. This function has been replaced by 4214AcpiHwDerivePciId, which is now part of the ACPICA core code. 4215AcpiHwDerivePciId has been implemented without recursion. Adds one new 4216module, hwpci.c. ACPICA BZ 857. 4217 4218Implemented a dynamic repair for _HID and _CID strings. The following 4219problems are now repaired at runtime: 1) Remove a leading asterisk in the 4220string, and 2) the entire string is uppercased. Both repairs are in 4221accordance with the ACPI specification and will simplify host driver 4222code. 4223ACPICA BZ 871. 4224 4225The ACPI_THREAD_ID type is no longer configurable, internally it is now 4226always UINT64. This simplifies the ACPICA code, especially any printf 4227output. 4228UINT64 is the only common data type for all thread_id types across all 4229operating systems. It is now up to the host OSL to cast the native 4230thread_id 4231type to UINT64 before returning the value to ACPICA (via 4232AcpiOsGetThreadId). 4233Lin Ming, Bob Moore. 4234 4235Added the ACPI_INLINE type to enhance the ACPICA configuration. The 4236"inline" 4237keyword is not standard across compilers, and this type allows inline to 4238be 4239configured on a per-compiler basis. Lin Ming. 4240 4241Made the system global AcpiGbl_SystemAwakeAndRunning publically 4242available. 4243Added an extern for this boolean in acpixf.h. Some hosts utilize this 4244value 4245during suspend/restore operations. ACPICA BZ 869. 4246 4247All code that implements error/warning messages with the "ACPI:" prefix 4248has 4249been moved to a new module, utxferror.c. 4250 4251The UINT64_OVERLAY was moved to utmath.c, which is the only module where 4252it 4253is used. ACPICA BZ 829. Lin Ming, Bob Moore. 4254 4255Example Code and Data Size: These are the sizes for the OS-independent 4256acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4257debug version of the code includes the debug output trace mechanism and 4258has a 4259much larger code and data size. 4260 4261 Previous Release: 4262 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4263 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4264 Current Release: 4265 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4266 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4267 42682) iASL Compiler/Disassembler and Tools: 4269 4270iASL/Disassembler: Write ACPI errors to stderr instead of the output 4271file. 4272This keeps the output files free of random error messages that may 4273originate 4274from within the namespace/interpreter code. Used this opportunity to 4275merge 4276all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 4277866. Lin Ming, Bob Moore. 4278 4279Tools: update some printfs for ansi warnings on size_t. Handle width 4280change 4281of size_t on 32-bit versus 64-bit generations. Lin Ming. 4282 4283---------------------------------------- 428406 August 2010. Summary of changes for version 20100806: 4285 42861) ACPI CA Core Subsystem: 4287 4288Designed and implemented a new host interface to the _OSI support code. 4289This 4290will allow the host to dynamically add or remove multiple _OSI strings, 4291as 4292well as install an optional handler that is called for each _OSI 4293invocation. 4294Also added a new AML debugger command, 'osi' to display and modify the 4295global 4296_OSI string table, and test support in the AcpiExec utility. See the 4297ACPICA 4298reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 4299New Functions: 4300 AcpiInstallInterface - Add an _OSI string. 4301 AcpiRemoveInterface - Delete an _OSI string. 4302 AcpiInstallInterfaceHandler - Install optional _OSI handler. 4303Obsolete Functions: 4304 AcpiOsValidateInterface - no longer used. 4305New Files: 4306 source/components/utilities/utosi.c 4307 4308Re-introduced the support to enable multi-byte transfers for Embedded 4309Controller (EC) operation regions. A reported problem was found to be a 4310bug 4311in the host OS, not in the multi-byte support. Previously, the maximum 4312data 4313size passed to the EC operation region handler was a single byte. There 4314are 4315often EC Fields larger than one byte that need to be transferred, and it 4316is 4317useful for the EC driver to lock these as a single transaction. This 4318change 4319enables single transfers larger than 8 bits. This effectively changes the 4320access to the EC space from ByteAcc to AnyAcc, and will probably require 4321changes to the host OS Embedded Controller driver to enable 16/32/64/256- 4322bit 4323transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 4324 4325Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 4326prototype in acpiosxf.h had the output value pointer as a (void *). 4327It should be a (UINT64 *). This may affect some host OSL code. 4328 4329Fixed a couple problems with the recently modified Linux makefiles for 4330iASL 4331and AcpiExec. These new makefiles place the generated object files in the 4332local directory so that there can be no collisions between the files that 4333are 4334shared between them that are compiled with different options. 4335 4336Example Code and Data Size: These are the sizes for the OS-independent 4337acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4338debug version of the code includes the debug output trace mechanism and 4339has a 4340much larger code and data size. 4341 4342 Previous Release: 4343 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4344 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4345 Current Release: 4346 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4347 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4348 43492) iASL Compiler/Disassembler and Tools: 4350 4351iASL/Disassembler: Added a new option (-da, "disassemble all") to load 4352the 4353namespace from and disassemble an entire group of AML files. Useful for 4354loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 4355and 4356disassembling with one simple command. ACPICA BZ 865. Lin Ming. 4357 4358iASL: Allow multiple invocations of -e option. This change allows 4359multiple 4360uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 4361834. 4362Lin Ming. 4363 4364---------------------------------------- 436502 July 2010. Summary of changes for version 20100702: 4366 43671) ACPI CA Core Subsystem: 4368 4369Implemented several updates to the recently added GPE reference count 4370support. The model for "wake" GPEs is changing to give the host OS 4371complete 4372control of these GPEs. Eventually, the ACPICA core will not execute any 4373_PRW 4374methods, since the host already must execute them. Also, additional 4375changes 4376were made to help ensure that the reference counts are kept in proper 4377synchronization with reality. Rafael J. Wysocki. 4378 43791) Ensure that GPEs are not enabled twice during initialization. 43802) Ensure that GPE enable masks stay in sync with the reference count. 43813) Do not inadvertently enable GPEs when writing GPE registers. 43824) Remove the internal wake reference counter and add new AcpiGpeWakeup 4383interface. This interface will set or clear individual GPEs for wakeup. 43845) Remove GpeType argument from AcpiEnable and AcpiDisable. These 4385interfaces 4386are now used for "runtime" GPEs only. 4387 4388Changed the behavior of the GPE install/remove handler interfaces. The 4389GPE 4390is 4391no longer disabled during this process, as it was found to cause problems 4392on 4393some machines. Rafael J. Wysocki. 4394 4395Reverted a change introduced in version 20100528 to enable Embedded 4396Controller multi-byte transfers. This change was found to cause problems 4397with 4398Index Fields and possibly Bank Fields. It will be reintroduced when these 4399problems have been resolved. 4400 4401Fixed a problem with references to Alias objects within Package Objects. 4402A 4403reference to an Alias within the definition of a Package was not always 4404resolved properly. Aliases to objects like Processors, Thermal zones, 4405etc. 4406were resolved to the actual object instead of a reference to the object 4407as 4408it 4409should be. Package objects are only allowed to contain integer, string, 4410buffer, package, and reference objects. Redhat bugzilla 608648. 4411 4412Example Code and Data Size: These are the sizes for the OS-independent 4413acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4414debug version of the code includes the debug output trace mechanism and 4415has a 4416much larger code and data size. 4417 4418 Previous Release: 4419 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4420 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4421 Current Release: 4422 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4423 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4424 44252) iASL Compiler/Disassembler and Tools: 4426 4427iASL: Implemented a new compiler subsystem to allow definition and 4428compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 4429These 4430are called "ACPI Data Tables", and the new compiler is the "Data Table 4431Compiler". This compiler is intended to simplify the existing error-prone 4432process of creating these tables for the BIOS, as well as allowing the 4433disassembly, modification, recompilation, and override of existing ACPI 4434data 4435tables. See the iASL User Guide for detailed information. 4436 4437iASL: Implemented a new Template Generator option in support of the new 4438Data 4439Table Compiler. This option will create examples of all known ACPI tables 4440that can be used as the basis for table development. See the iASL 4441documentation and the -T option. 4442 4443Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 4444Descriptor Table). 4445 4446Updated the Linux makefiles for iASL and AcpiExec to place the generated 4447object files in the local directory so that there can be no collisions 4448between the shared files between them that are generated with different 4449options. 4450 4451Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 4452Use 4453the #define __APPLE__ to enable this support. 4454 4455---------------------------------------- 445628 May 2010. Summary of changes for version 20100528: 4457 4458Note: The ACPI 4.0a specification was released on April 5, 2010 and is 4459available at www.acpi.info. This is primarily an errata release. 4460 44611) ACPI CA Core Subsystem: 4462 4463Undefined ACPI tables: We are looking for the definitions for the 4464following 4465ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 4466 4467Implemented support to enable multi-byte transfers for Embedded 4468Controller 4469(EC) operation regions. Previously, the maximum data size passed to the 4470EC 4471operation region handler was a single byte. There are often EC Fields 4472larger 4473than one byte that need to be transferred, and it is useful for the EC 4474driver 4475to lock these as a single transaction. This change enables single 4476transfers 4477larger than 8 bits. This effectively changes the access to the EC space 4478from 4479ByteAcc to AnyAcc, and will probably require changes to the host OS 4480Embedded 4481Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 4482bit 4483transfers. Alexey Starikovskiy, Lin Ming 4484 4485Implemented a performance enhancement for namespace search and access. 4486This 4487change enhances the performance of namespace searches and walks by adding 4488a 4489backpointer to the parent in each namespace node. On large namespaces, 4490this 4491change can improve overall ACPI performance by up to 9X. Adding a pointer 4492to 4493each namespace node increases the overall size of the internal namespace 4494by 4495about 5%, since each namespace entry usually consists of both a namespace 4496node and an ACPI operand object. However, this is the first growth of the 4497namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 4498 4499Implemented a performance optimization that reduces the number of 4500namespace 4501walks. On control method exit, only walk the namespace if the method is 4502known 4503to have created namespace objects outside of its local scope. Previously, 4504the 4505entire namespace was traversed on each control method exit. This change 4506can 4507improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 4508Moore. 4509 4510Added support to truncate I/O addresses to 16 bits for Windows 4511compatibility. 4512Some ASL code has been seen in the field that inadvertently has bits set 4513above bit 15. This feature is optional and is enabled if the BIOS 4514requests 4515any Windows OSI strings. It can also be enabled by the host OS. Matthew 4516Garrett, Bob Moore. 4517 4518Added support to limit the maximum time for the ASL Sleep() operator. To 4519prevent accidental deep sleeps, limit the maximum time that Sleep() will 4520actually sleep. Configurable, the default maximum is two seconds. ACPICA 4521bugzilla 854. 4522 4523Added run-time validation support for the _WDG and_WED Microsoft 4524predefined 4525methods. These objects are defined by "Windows Instrumentation", and are 4526not 4527part of the ACPI spec. ACPICA BZ 860. 4528 4529Expanded all statistic counters used during namespace and device 4530initialization from 16 to 32 bits in order to support very large 4531namespaces. 4532 4533Replaced all instances of %d in printf format specifiers with %u since 4534nearly 4535all integers in ACPICA are unsigned. 4536 4537Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 4538returned 4539as AE_NO_HANDLER. 4540 4541Example Code and Data Size: These are the sizes for the OS-independent 4542acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4543debug version of the code includes the debug output trace mechanism and 4544has a 4545much larger code and data size. 4546 4547 Previous Release: 4548 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4549 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4550 Current Release: 4551 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4552 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4553 45542) iASL Compiler/Disassembler and Tools: 4555 4556iASL: Added compiler support for the _WDG and_WED Microsoft predefined 4557methods. These objects are defined by "Windows Instrumentation", and are 4558not 4559part of the ACPI spec. ACPICA BZ 860. 4560 4561AcpiExec: added option to disable the memory tracking mechanism. The -dt 4562option will disable the tracking mechanism, which improves performance 4563considerably. 4564 4565AcpiExec: Restructured the command line options into -d (disable) and -e 4566(enable) options. 4567 4568---------------------------------------- 456928 April 2010. Summary of changes for version 20100428: 4570 45711) ACPI CA Core Subsystem: 4572 4573Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 4574including FADT-based and GPE Block Devices, execute any _PRW methods in 4575the 4576new table, and process any _Lxx/_Exx GPE methods in the new table. Any 4577runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 4578immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 4579Devices. Provides compatibility with other ACPI implementations. Two new 4580files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 4581Moore. 4582 4583Fixed a regression introduced in version 20100331 within the table 4584manager 4585where initial table loading could fail. This was introduced in the fix 4586for 4587AcpiReallocateRootTable. Also, renamed some of fields in the table 4588manager 4589data structures to clarify their meaning and use. 4590 4591Fixed a possible allocation overrun during internal object copy in 4592AcpiUtCopySimpleObject. The original code did not correctly handle the 4593case 4594where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 4595847. 4596 4597Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 4598possible access beyond end-of-allocation. Also, now fully validate 4599descriptor 4600(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 4601 4602Example Code and Data Size: These are the sizes for the OS-independent 4603acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4604debug version of the code includes the debug output trace mechanism and 4605has a 4606much larger code and data size. 4607 4608 Previous Release: 4609 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4610 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4611 Current Release: 4612 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4613 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4614 46152) iASL Compiler/Disassembler and Tools: 4616 4617iASL: Implemented Min/Max/Len/Gran validation for address resource 4618descriptors. This change implements validation for the address fields 4619that 4620are common to all address-type resource descriptors. These checks are 4621implemented: Checks for valid Min/Max, length within the Min/Max window, 4622valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 4623per 4624table 6-40 in the ACPI 4.0a specification. Also split the large 4625aslrestype1.c 4626and aslrestype2.c files into five new files. ACPICA BZ 840. 4627 4628iASL: Added support for the _Wxx predefined names. This support was 4629missing 4630and these names were not recognized by the compiler as valid predefined 4631names. ACPICA BZ 851. 4632 4633iASL: Added an error for all predefined names that are defined to return 4634no 4635value and thus must be implemented as Control Methods. These include all 4636of 4637the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 4638names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 4639 4640iASL: Implemented the -ts option to emit hex AML data in ASL format, as 4641an 4642ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 4643be 4644dynamically loaded via the Load() operator. Also cleaned up output for 4645the 4646- 4647ta and -tc options. ACPICA BZ 853. 4648 4649Tests: Added a new file with examples of extended iASL error checking. 4650Demonstrates the advanced error checking ability of the iASL compiler. 4651Available at tests/misc/badcode.asl. 4652 4653---------------------------------------- 465431 March 2010. Summary of changes for version 20100331: 4655 46561) ACPI CA Core Subsystem: 4657 4658Completed a major update for the GPE support in order to improve support 4659for 4660shared GPEs and to simplify both host OS and ACPICA code. Added a 4661reference 4662count mechanism to support shared GPEs that require multiple device 4663drivers. 4664Several external interfaces have changed. One external interface has been 4665removed. One new external interface was added. Most of the GPE external 4666interfaces now use the GPE spinlock instead of the events mutex (and the 4667Flags parameter for many GPE interfaces has been removed.) See the 4668updated 4669ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 4670Rafael 4671Wysocki. ACPICA BZ 831. 4672 4673Changed: 4674 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 4675Removed: 4676 AcpiSetGpeType 4677New: 4678 AcpiSetGpe 4679 4680Implemented write support for DataTable operation regions. These regions 4681are 4682defined via the DataTableRegion() operator. Previously, only read support 4683was 4684implemented. The ACPI specification allows DataTableRegions to be 4685read/write, 4686however. 4687 4688Implemented a new subsystem option to force a copy of the DSDT to local 4689memory. Optionally copy the entire DSDT to local memory (instead of 4690simply 4691mapping it.) There are some (albeit very rare) BIOSs that corrupt or 4692replace 4693the original DSDT, creating the need for this option. Default is FALSE, 4694do 4695not copy the DSDT. 4696 4697Implemented detection of a corrupted or replaced DSDT. This change adds 4698support to detect a DSDT that has been corrupted and/or replaced from 4699outside 4700the OS (by firmware). This is typically catastrophic for the system, but 4701has 4702been seen on some machines. Once this problem has been detected, the DSDT 4703copy option can be enabled via system configuration. Lin Ming, Bob Moore. 4704 4705Fixed two problems with AcpiReallocateRootTable during the root table 4706copy. 4707When copying the root table to the new allocation, the length used was 4708incorrect. The new size was used instead of the current table size, 4709meaning 4710too much data was copied. Also, the count of available slots for ACPI 4711tables 4712was not set correctly. Alexey Starikovskiy, Bob Moore. 4713 4714Example Code and Data Size: These are the sizes for the OS-independent 4715acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4716debug version of the code includes the debug output trace mechanism and 4717has a 4718much larger code and data size. 4719 4720 Previous Release: 4721 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4722 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4723 Current Release: 4724 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4725 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4726 47272) iASL Compiler/Disassembler and Tools: 4728 4729iASL: Implement limited typechecking for values returned from predefined 4730control methods. The type of any returned static (unnamed) object is now 4731validated. For example, Return(1). ACPICA BZ 786. 4732 4733iASL: Fixed a predefined name object verification regression. Fixes a 4734problem 4735introduced in version 20100304. An error is incorrectly generated if a 4736predefined name is declared as a static named object with a value defined 4737using the keywords "Zero", "One", or "Ones". Lin Ming. 4738 4739iASL: Added Windows 7 support for the -g option (get local ACPI tables) 4740by 4741reducing the requested registry access rights. ACPICA BZ 842. 4742 4743Disassembler: fixed a possible fault when generating External() 4744statements. 4745Introduced in commit ae7d6fd: Properly handle externals with parent- 4746prefix 4747(carat). Fixes a string length allocation calculation. Lin Ming. 4748 4749---------------------------------------- 475004 March 2010. Summary of changes for version 20100304: 4751 47521) ACPI CA Core Subsystem: 4753 4754Fixed a possible problem with the AML Mutex handling function 4755AcpiExReleaseMutex where the function could fault under the very rare 4756condition when the interpreter has blocked, the interpreter lock is 4757released, 4758the interpreter is then reentered via the same thread, and attempts to 4759acquire an AML mutex that was previously acquired. FreeBSD report 140979. 4760Lin 4761Ming. 4762 4763Implemented additional configuration support for the AML "Debug Object". 4764Output from the debug object can now be enabled via a global variable, 4765AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 4766debugging. 4767This debug output is now available in the release version of ACPICA 4768instead 4769of just the debug version. Also, the entire debug output module can now 4770be 4771configured out of the ACPICA build if desired. One new file added, 4772executer/exdebug.c. Lin Ming, Bob Moore. 4773 4774Added header support for the ACPI MCHI table (Management Controller Host 4775Interface Table). This table was added in ACPI 4.0, but the defining 4776document 4777has only recently become available. 4778 4779Standardized output of integer values for ACPICA warnings/errors. Always 4780use 47810x prefix for hex output, always use %u for unsigned integer decimal 4782output. 4783Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 4784400 4785invocations.) These invocations were converted from the original 4786ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 4787 4788Example Code and Data Size: These are the sizes for the OS-independent 4789acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4790debug version of the code includes the debug output trace mechanism and 4791has a 4792much larger code and data size. 4793 4794 Previous Release: 4795 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4796 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4797 Current Release: 4798 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4799 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4800 48012) iASL Compiler/Disassembler and Tools: 4802 4803iASL: Implemented typechecking support for static (non-control method) 4804predefined named objects that are declared with the Name() operator. For 4805example, the type of this object is now validated to be of type Integer: 4806Name(_BBN, 1). This change migrates the compiler to using the core 4807predefined 4808name table instead of maintaining a local version. Added a new file, 4809aslpredef.c. ACPICA BZ 832. 4810 4811Disassembler: Added support for the ACPI 4.0 MCHI table. 4812 4813---------------------------------------- 481421 January 2010. Summary of changes for version 20100121: 4815 48161) ACPI CA Core Subsystem: 4817 4818Added the 2010 copyright to all module headers and signons. This affects 4819virtually every file in the ACPICA core subsystem, the iASL compiler, the 4820tools/utilities, and the test suites. 4821 4822Implemented a change to the AcpiGetDevices interface to eliminate 4823unnecessary 4824invocations of the _STA method. In the case where a specific _HID is 4825requested, do not run _STA until a _HID match is found. This eliminates 4826potentially dozens of _STA calls during a search for a particular 4827device/HID, 4828which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 4829 4830Implemented an additional repair for predefined method return values. 4831Attempt 4832to repair unexpected NULL elements within returned Package objects. 4833Create 4834an 4835Integer of value zero, a NULL String, or a zero-length Buffer as 4836appropriate. 4837ACPICA BZ 818. Lin Ming, Bob Moore. 4838 4839Removed the obsolete ACPI_INTEGER data type. This type was introduced as 4840the 4841code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 4842(with 484364-bit AML integers). It is now obsolete and this change removes it from 4844the 4845ACPICA code base, replaced by UINT64. The original typedef has been 4846retained 4847for now for compatibility with existing device driver code. ACPICA BZ 4848824. 4849 4850Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 4851in 4852the parse tree object. 4853 4854Added additional warning options for the gcc-4 generation. Updated the 4855source 4856accordingly. This includes some code restructuring to eliminate 4857unreachable 4858code, elimination of some gotos, elimination of unused return values, 4859some 4860additional casting, and removal of redundant declarations. 4861 4862Example Code and Data Size: These are the sizes for the OS-independent 4863acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4864debug version of the code includes the debug output trace mechanism and 4865has a 4866much larger code and data size. 4867 4868 Previous Release: 4869 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4870 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4871 Current Release: 4872 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4873 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4874 48752) iASL Compiler/Disassembler and Tools: 4876 4877No functional changes for this release. 4878 4879---------------------------------------- 488014 December 2009. Summary of changes for version 20091214: 4881 48821) ACPI CA Core Subsystem: 4883 4884Enhanced automatic data type conversions for predefined name repairs. 4885This 4886change expands the automatic repairs/conversions for predefined name 4887return 4888values to make Integers, Strings, and Buffers fully interchangeable. 4889Also, 4890a 4891Buffer can be converted to a Package of Integers if necessary. The 4892nsrepair.c 4893module was completely restructured. Lin Ming, Bob Moore. 4894 4895Implemented automatic removal of null package elements during predefined 4896name 4897repairs. This change will automatically remove embedded and trailing NULL 4898package elements from returned package objects that are defined to 4899contain 4900a 4901variable number of sub-packages. The driver is then presented with a 4902package 4903with no null elements to deal with. ACPICA BZ 819. 4904 4905Implemented a repair for the predefined _FDE and _GTM names. The expected 4906return value for both names is a Buffer of 5 DWORDs. This repair fixes 4907two 4908possible problems (both seen in the field), where a package of integers 4909is 4910returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 4911Kim. 4912 4913Implemented additional module-level code support. This change will 4914properly 4915execute module-level code that is not at the root of the namespace (under 4916a 4917Device object, etc.). Now executes the code within the current scope 4918instead 4919of the root. ACPICA BZ 762. Lin Ming. 4920 4921Fixed possible mutex acquisition errors when running _REG methods. Fixes 4922a 4923problem where mutex errors can occur when running a _REG method that is 4924in 4925the same scope as a method-defined operation region or an operation 4926region 4927under a module-level IF block. This type of code is rare, so the problem 4928has 4929not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 4930 4931Fixed a possible memory leak during module-level code execution. An 4932object 4933could be leaked for each block of executed module-level code if the 4934interpreter slack mode is enabled This change deletes any implicitly 4935returned 4936object from the module-level code block. Lin Ming. 4937 4938Removed messages for successful predefined repair(s). The repair 4939mechanism 4940was considered too wordy. Now, messages are only unconditionally emitted 4941if 4942the return object cannot be repaired. Existing messages for successful 4943repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 4944827. 4945 4946Example Code and Data Size: These are the sizes for the OS-independent 4947acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4948debug version of the code includes the debug output trace mechanism and 4949has a 4950much larger code and data size. 4951 4952 Previous Release: 4953 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4954 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4955 Current Release: 4956 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4957 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4958 49592) iASL Compiler/Disassembler and Tools: 4960 4961iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 4962files 4963were no longer automatically removed at the termination of the compile. 4964 4965acpiexec: Implemented the -f option to specify default region fill value. 4966This option specifies the value used to initialize buffers that simulate 4967operation regions. Default value is zero. Useful for debugging problems 4968that 4969depend on a specific initial value for a region or field. 4970 4971---------------------------------------- 497212 November 2009. Summary of changes for version 20091112: 4973 49741) ACPI CA Core Subsystem: 4975 4976Implemented a post-order callback to AcpiWalkNamespace. The existing 4977interface only has a pre-order callback. This change adds an additional 4978parameter for a post-order callback which will be more useful for bus 4979scans. 4980ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 4981 4982Modified the behavior of the operation region memory mapping cache for 4983SystemMemory. Ensure that the memory mappings created for operation 4984regions 4985do not cross 4K page boundaries. Crossing a page boundary while mapping 4986regions can cause kernel warnings on some hosts if the pages have 4987different 4988attributes. Such regions are probably BIOS bugs, and this is the 4989workaround. 4990Linux BZ 14445. Lin Ming. 4991 4992Implemented an automatic repair for predefined methods that must return 4993sorted lists. This change will repair (by sorting) packages returned by 4994_ALR, 4995_PSS, and _TSS. Drivers can now assume that the packages are correctly 4996sorted 4997and do not contain NULL package elements. Adds one new file, 4998namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 4999 5000Fixed a possible fault during predefined name validation if a return 5001Package 5002object contains NULL elements. Also adds a warning if a NULL element is 5003followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 5004may 5005include repair or removal of all such NULL elements where possible. 5006 5007Implemented additional module-level executable AML code support. This 5008change 5009will execute module-level code that is not at the root of the namespace 5010(under a Device object, etc.) at table load time. Module-level executable 5011AML 5012code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 5013 5014Implemented a new internal function to create Integer objects. This 5015function 5016simplifies miscellaneous object creation code. ACPICA BZ 823. 5017 5018Reduced the severity of predefined repair messages, Warning to Info. 5019Since 5020the object was successfully repaired, a warning is too severe. Reduced to 5021an 5022info message for now. These messages may eventually be changed to debug- 5023only. 5024ACPICA BZ 812. 5025 5026Example Code and Data Size: These are the sizes for the OS-independent 5027acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5028debug version of the code includes the debug output trace mechanism and 5029has a 5030much larger code and data size. 5031 5032 Previous Release: 5033 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5034 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5035 Current 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 50392) iASL Compiler/Disassembler and Tools: 5040 5041iASL: Implemented Switch() with While(1) so that Break works correctly. 5042This 5043change correctly implements the Switch operator with a surrounding 5044While(1) 5045so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 5046 5047iASL: Added a message if a package initializer list is shorter than 5048package 5049length. Adds a new remark for a Package() declaration if an initializer 5050list 5051exists, but is shorter than the declared length of the package. Although 5052technically legal, this is probably a coding error and it is seen in the 5053field. ACPICA BZ 815. Lin Ming, Bob Moore. 5054 5055iASL: Fixed a problem where the compiler could fault after the maximum 5056number 5057of errors was reached (200). 5058 5059acpixtract: Fixed a possible warning for pointer cast if the compiler 5060warning 5061level set very high. 5062 5063---------------------------------------- 506413 October 2009. Summary of changes for version 20091013: 5065 50661) ACPI CA Core Subsystem: 5067 5068Fixed a problem where an Operation Region _REG method could be executed 5069more 5070than once. If a custom address space handler is installed by the host 5071before 5072the "initialize operation regions" phase of the ACPICA initialization, 5073any 5074_REG methods for that address space could be executed twice. This change 5075fixes the problem. ACPICA BZ 427. Lin Ming. 5076 5077Fixed a possible memory leak for the Scope() ASL operator. When the exact 5078invocation of "Scope(\)" is executed (change scope to root), one internal 5079operand object was leaked. Lin Ming. 5080 5081Implemented a run-time repair for the _MAT predefined method. If the _MAT 5082return value is defined as a Field object in the AML, and the field 5083size is less than or equal to the default width of an integer (32 or 508464),_MAT 5085can incorrectly return an Integer instead of a Buffer. ACPICA now 5086automatically repairs this problem. ACPICA BZ 810. 5087 5088Implemented a run-time repair for the _BIF and _BIX predefined methods. 5089The 5090"OEM Information" field is often incorrectly returned as an Integer with 5091value zero if the field is not supported by the platform. This is due to 5092an 5093ambiguity in the ACPI specification. The field should always be a string. 5094ACPICA now automatically repairs this problem by returning a NULL string 5095within the returned Package. ACPICA BZ 807. 5096 5097Example Code and Data Size: These are the sizes for the OS-independent 5098acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5099debug version of the code includes the debug output trace mechanism and 5100has a 5101much larger code and data size. 5102 5103 Previous Release: 5104 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5105 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5106 Current Release: 5107 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5108 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5109 51102) iASL Compiler/Disassembler and Tools: 5111 5112Disassembler: Fixed a problem where references to external symbols that 5113contained one or more parent-prefixes (carats) were not handled 5114correctly, 5115possibly causing a fault. ACPICA BZ 806. Lin Ming. 5116 5117Disassembler: Restructured the code so that all functions that handle 5118external symbols are in a single module. One new file is added, 5119common/dmextern.c. 5120 5121AML Debugger: Added a max count argument for the Batch command (which 5122executes multiple predefined methods within the namespace.) 5123 5124iASL: Updated the compiler documentation (User Reference.) Available at 5125http://www.acpica.org/documentation/. ACPICA BZ 750. 5126 5127AcpiXtract: Updated for Lint and other formatting changes. Close all open 5128files. 5129 5130---------------------------------------- 513103 September 2009. Summary of changes for version 20090903: 5132 51331) ACPI CA Core Subsystem: 5134 5135For Windows Vista compatibility, added the automatic execution of an _INI 5136method located at the namespace root (\_INI). This method is executed at 5137table load time. This support is in addition to the automatic execution 5138of 5139\_SB._INI. Lin Ming. 5140 5141Fixed a possible memory leak in the interpreter for AML package objects 5142if 5143the package initializer list is longer than the defined size of the 5144package. 5145This apparently can only happen if the BIOS changes the package size on 5146the 5147fly (seen in a _PSS object), as ASL compilers do not allow this. The 5148interpreter will truncate the package to the defined size (and issue an 5149error 5150message), but previously could leave the extra objects undeleted if they 5151were 5152pre-created during the argument processing (such is the case if the 5153package 5154consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 5155 5156Fixed a problem seen when a Buffer or String is stored to itself via ASL. 5157This has been reported in the field. Previously, ACPICA would zero out 5158the 5159buffer/string. Now, the operation is treated as a noop. Provides Windows 5160compatibility. ACPICA BZ 803. Lin Ming. 5161 5162Removed an extraneous error message for ASL constructs of the form 5163Store(LocalX,LocalX) when LocalX is uninitialized. These curious 5164statements 5165are seen in many BIOSs and are once again treated as NOOPs and no error 5166is 5167emitted when they are encountered. ACPICA BZ 785. 5168 5169Fixed an extraneous warning message if a _DSM reserved method returns a 5170Package object. _DSM can return any type of object, so validation on the 5171return type cannot be performed. ACPICA BZ 802. 5172 5173Example Code and Data Size: These are the sizes for the OS-independent 5174acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5175debug version of the code includes the debug output trace mechanism and 5176has a 5177much larger code and data size. 5178 5179 Previous Release: 5180 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5181 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5182 Current Release: 5183 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5184 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5185 51862) iASL Compiler/Disassembler and Tools: 5187 5188iASL: Fixed a problem with the use of the Alias operator and Resource 5189Templates. The correct alias is now constructed and no error is emitted. 5190ACPICA BZ 738. 5191 5192iASL: Implemented the -I option to specify additional search directories 5193for 5194include files. Allows multiple additional search paths for include files. 5195Directories are searched in the order specified on the command line 5196(after 5197the local directory is searched.) ACPICA BZ 800. 5198 5199iASL: Fixed a problem where the full pathname for include files was not 5200emitted for warnings/errors. This caused the IDE support to not work 5201properly. ACPICA BZ 765. 5202 5203iASL: Implemented the -@ option to specify a Windows-style response file 5204containing additional command line options. ACPICA BZ 801. 5205 5206AcpiExec: Added support to load multiple AML files simultaneously (such 5207as 5208a 5209DSDT and multiple SSDTs). Also added support for wildcards within the AML 5210pathname. These features allow all machine tables to be easily loaded and 5211debugged together. ACPICA BZ 804. 5212 5213Disassembler: Added missing support for disassembly of HEST table Error 5214Bank 5215subtables. 5216 5217---------------------------------------- 521830 July 2009. Summary of changes for version 20090730: 5219 5220The ACPI 4.0 implementation for ACPICA is complete with this release. 5221 52221) ACPI CA Core Subsystem: 5223 5224ACPI 4.0: Added header file support for all new and changed ACPI tables. 5225Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 5226new 5227for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 5228BERT, 5229EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 5230There 5231have been some ACPI 4.0 changes to other existing tables. Split the large 5232actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 5233 5234ACPI 4.0: Implemented predefined name validation for all new names. There 5235are 523631 new names in ACPI 4.0. The predefined validation module was split into 5237two 5238files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 5239 5240Implemented support for so-called "module-level executable code". This is 5241executable AML code that exists outside of any control method and is 5242intended 5243to be executed at table load time. Although illegal since ACPI 2.0, this 5244type 5245of code still exists and is apparently still being created. Blocks of 5246this 5247code are now detected and executed as intended. Currently, the code 5248blocks 5249must exist under either an If, Else, or While construct; these are the 5250typical cases seen in the field. ACPICA BZ 762. Lin Ming. 5251 5252Implemented an automatic dynamic repair for predefined names that return 5253nested Package objects. This applies to predefined names that are defined 5254to 5255return a variable-length Package of sub-packages. If the number of sub- 5256packages is one, BIOS code is occasionally seen that creates a simple 5257single 5258package with no sub-packages. This code attempts to fix the problem by 5259wrapping a new package object around the existing package. These methods 5260can 5261be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 5262BZ 5263790. 5264 5265Fixed a regression introduced in 20090625 for the AcpiGetDevices 5266interface. 5267The _HID/_CID matching was broken and no longer matched IDs correctly. 5268ACPICA 5269BZ 793. 5270 5271Fixed a problem with AcpiReset where the reset would silently fail if the 5272register was one of the protected I/O ports. AcpiReset now bypasses the 5273port 5274validation mechanism. This may eventually be driven into the 5275AcpiRead/Write 5276interfaces. 5277 5278Fixed a regression related to the recent update of the AcpiRead/Write 5279interfaces. A sleep/suspend could fail if the optional PM2 Control 5280register 5281does not exist during an attempt to write the Bus Master Arbitration bit. 5282(However, some hosts already delete the code that writes this bit, and 5283the 5284code may in fact be obsolete at this date.) ACPICA BZ 799. 5285 5286Fixed a problem where AcpiTerminate could fault if inadvertently called 5287twice 5288in succession. ACPICA BZ 795. 5289 5290Example Code and Data Size: These are the sizes for the OS-independent 5291acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5292debug version of the code includes the debug output trace mechanism and 5293has a 5294much larger code and data size. 5295 5296 Previous Release: 5297 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5298 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5299 Current Release: 5300 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5301 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5302 53032) iASL Compiler/Disassembler and Tools: 5304 5305ACPI 4.0: Implemented disassembler support for all new ACPI tables and 5306changes to existing tables. ACPICA BZ 775. 5307 5308---------------------------------------- 530925 June 2009. Summary of changes for version 20090625: 5310 5311The ACPI 4.0 Specification was released on June 16 and is available at 5312www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 5313continue for the next few releases. 5314 53151) ACPI CA Core Subsystem: 5316 5317ACPI 4.0: Implemented interpreter support for the IPMI operation region 5318address space. Includes support for bi-directional data buffers and an 5319IPMI 5320address space handler (to be installed by an IPMI device driver.) ACPICA 5321BZ 5322773. Lin Ming. 5323 5324ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 5325Includes 5326support in both the header files and the disassembler. 5327 5328Completed a major update for the AcpiGetObjectInfo external interface. 5329Changes include: 5330 - Support for variable, unlimited length HID, UID, and CID strings. 5331 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 5332etc.) 5333 - Call the _SxW power methods on behalf of a device object. 5334 - Determine if a device is a PCI root bridge. 5335 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 5336These changes will require an update to all callers of this interface. 5337See 5338the updated ACPICA Programmer Reference for details. One new source file 5339has 5340been added - utilities/utids.c. ACPICA BZ 368, 780. 5341 5342Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 5343transfers. The Value parameter has been extended from 32 bits to 64 bits 5344in 5345order to support new ACPI 4.0 tables. These changes will require an 5346update 5347to 5348all callers of these interfaces. See the ACPICA Programmer Reference for 5349details. ACPICA BZ 768. 5350 5351Fixed several problems with AcpiAttachData. The handler was not invoked 5352when 5353the host node was deleted. The data sub-object was not automatically 5354deleted 5355when the host node was deleted. The interface to the handler had an 5356unused 5357parameter, this was removed. ACPICA BZ 778. 5358 5359Enhanced the function that dumps ACPI table headers. All non-printable 5360characters in the string fields are now replaced with '?' (Signature, 5361OemId, 5362OemTableId, and CompilerId.) ACPI tables with non-printable characters in 5363these fields are occasionally seen in the field. ACPICA BZ 788. 5364 5365Fixed a problem with predefined method repair code where the code that 5366attempts to repair/convert an object of incorrect type is only executed 5367on 5368the first time the predefined method is called. The mechanism that 5369disables 5370warnings on subsequent calls was interfering with the repair mechanism. 5371ACPICA BZ 781. 5372 5373Fixed a possible memory leak in the predefined validation/repair code 5374when 5375a 5376buffer is automatically converted to an expected string object. 5377 5378Removed obsolete 16-bit files from the distribution and from the current 5379git 5380tree head. ACPICA BZ 776. 5381 5382Example Code and Data Size: These are the sizes for the OS-independent 5383acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5384debug version of the code includes the debug output trace mechanism and 5385has a 5386much larger code and data size. 5387 5388 Previous Release: 5389 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5390 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5391 Current Release: 5392 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5393 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5394 53952) iASL Compiler/Disassembler and Tools: 5396 5397ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 5398operation region keyword. ACPICA BZ 771, 772. Lin Ming. 5399 5400ACPI 4.0: iASL - implemented compile-time validation support for all new 5401predefined names and control methods (31 total). ACPICA BZ 769. 5402 5403---------------------------------------- 540421 May 2009. Summary of changes for version 20090521: 5405 54061) ACPI CA Core Subsystem: 5407 5408Disabled the preservation of the SCI enable bit in the PM1 control 5409register. 5410The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 5411to 5412be 5413a "preserved" bit - "OSPM always preserves this bit position", section 54144.7.3.2.1. However, some machines fail if this bit is in fact preserved 5415because the bit needs to be explicitly set by the OS as a workaround. No 5416machines fail if the bit is not preserved. Therefore, ACPICA no longer 5417attempts to preserve this bit. 5418 5419Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 5420incorrectly formed _PRT package could cause a fault. Added validation to 5421ensure that each package element is actually a sub-package. 5422 5423Implemented a new interface to install or override a single control 5424method, 5425AcpiInstallMethod. This interface is useful when debugging in order to 5426repair 5427an existing method or to install a missing method without having to 5428override 5429the entire ACPI table. See the ACPICA Programmer Reference for use and 5430examples. Lin Ming, Bob Moore. 5431 5432Fixed several reference count issues with the DdbHandle object that is 5433created from a Load or LoadTable operator. Prevent premature deletion of 5434the 5435object. Also, mark the object as invalid once the table has been 5436unloaded. 5437This is needed because the handle itself may not be deleted after the 5438table 5439unload, depending on whether it has been stored in a named object by the 5440caller. Lin Ming. 5441 5442Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 5443mutexes of the same sync level are acquired but then not released in 5444strict 5445opposite order, the internally maintained Current Sync Level becomes 5446confused 5447and can cause subsequent execution errors. ACPICA BZ 471. 5448 5449Changed the allowable release order for ASL mutex objects. The ACPI 4.0 5450specification has been changed to make the SyncLevel for mutex objects 5451more 5452useful. When releasing a mutex, the SyncLevel of the mutex must now be 5453the 5454same as the current sync level. This makes more sense than the previous 5455rule 5456(SyncLevel less than or equal). This change updates the code to match the 5457specification. 5458 5459Fixed a problem with the local version of the AcpiOsPurgeCache function. 5460The 5461(local) cache must be locked during all cache object deletions. Andrew 5462Baumann. 5463 5464Updated the Load operator to use operation region interfaces. This 5465replaces 5466direct memory mapping with region access calls. Now, all region accesses 5467go 5468through the installed region handler as they should. 5469 5470Simplified and optimized the NsGetNextNode function. Reduced parameter 5471count 5472and reduced code for this frequently used function. 5473 5474Example Code and Data Size: These are the sizes for the OS-independent 5475acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5476debug version of the code includes the debug output trace mechanism and 5477has a 5478much larger code and data size. 5479 5480 Previous Release: 5481 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5482 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5483 Current Release: 5484 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5485 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5486 54872) iASL Compiler/Disassembler and Tools: 5488 5489Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 5490problems 5491with sub-table disassembly and handling invalid sub-tables. Attempt 5492recovery 5493after an invalid sub-table ID. 5494 5495---------------------------------------- 549622 April 2009. Summary of changes for version 20090422: 5497 54981) ACPI CA Core Subsystem: 5499 5500Fixed a compatibility issue with the recently released I/O port 5501protection 5502mechanism. For windows compatibility, 1) On a port protection violation, 5503simply ignore the request and do not return an exception (allow the 5504control 5505method to continue execution.) 2) If only part of the request overlaps a 5506protected port, read/write the individual ports that are not protected. 5507Linux 5508BZ 13036. Lin Ming 5509 5510Enhanced the execution of the ASL/AML BreakPoint operator so that it 5511actually 5512breaks into the AML debugger if the debugger is present. This matches the 5513ACPI-defined behavior. 5514 5515Fixed several possible warnings related to the use of the configurable 5516ACPI_THREAD_ID. This type can now be configured as either an integer or a 5517pointer with no warnings. Also fixes several warnings in printf-like 5518statements for the 64-bit build when the type is configured as a pointer. 5519ACPICA BZ 766, 767. 5520 5521Fixed a number of possible warnings when compiling with gcc 4+ (depending 5522on 5523warning options.) Examples include printf formats, aliasing, unused 5524globals, 5525missing prototypes, missing switch default statements, use of non-ANSI 5526library functions, use of non-ANSI constructs. See generate/unix/Makefile 5527for 5528a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 5529 5530Example Code and Data Size: These are the sizes for the OS-independent 5531acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5532debug version of the code includes the debug output trace mechanism and 5533has a 5534much larger code and data size. 5535 5536 Previous Release: 5537 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5538 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5539 Current Release: 5540 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5541 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5542 55432) iASL Compiler/Disassembler and Tools: 5544 5545iASL: Fixed a generation warning from Bison 2.3 and fixed several 5546warnings 5547on 5548the 64-bit build. 5549 5550iASL: Fixed a problem where the Unix/Linux versions of the compiler could 5551not 5552correctly digest Windows/DOS formatted files (with CR/LF). 5553 5554iASL: Added a new option for "quiet mode" (-va) that produces only the 5555compilation summary, not individual errors and warnings. Useful for large 5556batch compilations. 5557 5558AcpiExec: Implemented a new option (-z) to enable a forced 5559semaphore/mutex 5560timeout that can be used to detect hang conditions during execution of 5561AML 5562code (includes both internal semaphores and AML-defined mutexes and 5563events.) 5564 5565Added new makefiles for the generation of acpica in a generic unix-like 5566environment. These makefiles are intended to generate the acpica tools 5567and 5568utilities from the original acpica git source tree structure. 5569 5570Test Suites: Updated and cleaned up the documentation files. Updated the 5571copyrights to 2009, affecting all source files. Use the new version of 5572iASL 5573with quiet mode. Increased the number of available semaphores in the 5574Windows 5575OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 5576added 5577an alternate implementation of the semaphore timeout to allow aslts to 5578execute fully on Cygwin. 5579 5580---------------------------------------- 558120 March 2009. Summary of changes for version 20090320: 5582 55831) ACPI CA Core Subsystem: 5584 5585Fixed a possible race condition between AcpiWalkNamespace and dynamic 5586table 5587unloads. Added a reader/writer locking mechanism to allow multiple 5588concurrent 5589namespace walks (readers), but block a dynamic table unload until it can 5590gain 5591exclusive write access to the namespace. This fixes a problem where a 5592table 5593unload could (possibly catastrophically) delete the portion of the 5594namespace 5595that is currently being examined by a walk. Adds a new file, utlock.c, 5596that 5597implements the reader/writer lock mechanism. ACPICA BZ 749. 5598 5599Fixed a regression introduced in version 20090220 where a change to the 5600FADT 5601handling could cause the ACPICA subsystem to access non-existent I/O 5602ports. 5603 5604Modified the handling of FADT register and table (FACS/DSDT) addresses. 5605The 5606FADT can contain both 32-bit and 64-bit versions of these addresses. 5607Previously, the 64-bit versions were favored, meaning that if both 32 and 560864 5609versions were valid, but not equal, the 64-bit version was used. This was 5610found to cause some machines to fail. Now, in this case, the 32-bit 5611version 5612is used instead. This now matches the Windows behavior. 5613 5614Implemented a new mechanism to protect certain I/O ports. Provides 5615Microsoft 5616compatibility and protects the standard PC I/O ports from access via AML 5617code. Adds a new file, hwvalid.c 5618 5619Fixed a possible extraneous warning message from the FADT support. The 5620message warns of a 32/64 length mismatch between the legacy and GAS 5621definitions for a register. 5622 5623Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 5624is 5625made obsolete by the port protection mechanism above. It was previously 5626used 5627to validate the entire address range of an operation region, which could 5628be 5629incorrect if the range included illegal ports, but fields within the 5630operation region did not actually access those ports. Validation is now 5631performed on a per-field basis instead of the entire region. 5632 5633Modified the handling of the PM1 Status Register ignored bit (bit 11.) 5634Ignored bits must be "preserved" according to the ACPI spec. Usually, 5635this 5636means a read/modify/write when writing to the register. However, for 5637status 5638registers, writing a one means clear the event. Writing a zero means 5639preserve 5640the event (do not clear.) This behavior is clarified in the ACPI 4.0 5641spec, 5642and the ACPICA code now simply always writes a zero to the ignored bit. 5643 5644Modified the handling of ignored bits for the PM1 A/B Control Registers. 5645As 5646per the ACPI specification, for the control registers, preserve 5647(read/modify/write) all bits that are defined as either reserved or 5648ignored. 5649 5650Updated the handling of write-only bits in the PM1 A/B Control Registers. 5651When reading the register, zero the write-only bits as per the ACPI spec. 5652ACPICA BZ 443. Lin Ming. 5653 5654Removed "Linux" from the list of supported _OSI strings. Linux no longer 5655wants to reply true to this request. The Windows strings are the only 5656paths 5657through the AML that are tested and known to work properly. 5658 5659 Previous Release: 5660 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5661 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5662 Current Release: 5663 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5664 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5665 56662) iASL Compiler/Disassembler and Tools: 5667 5668Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 5669and 5670aetables.c 5671 5672---------------------------------------- 567320 February 2009. Summary of changes for version 20090220: 5674 56751) ACPI CA Core Subsystem: 5676 5677Optimized the ACPI register locking. Removed locking for reads from the 5678ACPI 5679bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 5680is 5681not required when reading the single-bit registers. The 5682AcpiGetRegisterUnlocked function is no longer needed and has been 5683removed. 5684This will improve performance for reads on these registers. ACPICA BZ 5685760. 5686 5687Fixed the parameter validation for AcpiRead/Write. Now return 5688AE_BAD_PARAMETER if the input register pointer is null, and 5689AE_BAD_ADDRESS 5690if 5691the register has an address of zero. Previously, these cases simply 5692returned 5693AE_OK. For optional registers such as PM1B status/enable/control, the 5694caller 5695should check for a valid register address before calling. ACPICA BZ 748. 5696 5697Renamed the external ACPI bit register access functions. Renamed 5698AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 5699functions. The new names are AcpiReadBitRegister and 5700AcpiWriteBitRegister. 5701Also, restructured the code for these functions by simplifying the code 5702path 5703and condensing duplicate code to reduce code size. 5704 5705Added new functions to transparently handle the possibly split PM1 A/B 5706registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 5707functions 5708now handle the split registers for PM1 Status, Enable, and Control. 5709ACPICA 5710BZ 5711746. 5712 5713Added a function to handle the PM1 control registers, 5714AcpiHwWritePm1Control. 5715This function writes both of the PM1 control registers (A/B). These 5716registers 5717are different than the PM1 A/B status and enable registers in that 5718different 5719values can be written to the A/B registers. Most notably, the SLP_TYP 5720bits 5721can be different, as per the values returned from the _Sx predefined 5722methods. 5723 5724Removed an extra register write within AcpiHwClearAcpiStatus. This 5725function 5726was writing an optional PM1B status register twice. The existing call to 5727the 5728low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 5729A/B 5730register. ACPICA BZ 751. 5731 5732Split out the PM1 Status registers from the FADT. Added new globals for 5733these 5734registers (A/B), similar to the way the PM1 Enable registers are handled. 5735Instead of overloading the FADT Event Register blocks. This makes the 5736code 5737clearer and less prone to error. 5738 5739Fixed the warning message for when the platform contains too many ACPI 5740tables 5741for the default size of the global root table data structure. The 5742calculation 5743for the truncation value was incorrect. 5744 5745Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 5746obsolete macro, since it is now a simple reference to ->common.type. 5747There 5748were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 5749 5750Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 5751TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 5752simply SLEEP_TYPE. ACPICA BZ 754. 5753 5754Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 5755function is only needed on 64-bit host operating systems and is thus not 5756included for 32-bit hosts. 5757 5758Debug output: print the input and result for invocations of the _OSI 5759reserved 5760control method via the ACPI_LV_INFO debug level. Also, reduced some of 5761the 5762verbosity of this debug level. Len Brown. 5763 5764Example Code and Data Size: These are the sizes for the OS-independent 5765acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5766debug version of the code includes the debug output trace mechanism and 5767has a 5768much larger code and data size. 5769 5770 Previous Release: 5771 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5772 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5773 Current Release: 5774 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5775 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5776 57772) iASL Compiler/Disassembler and Tools: 5778 5779Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 5780various legal performance profiles. 5781 5782---------------------------------------- 578323 January 2009. Summary of changes for version 20090123: 5784 57851) ACPI CA Core Subsystem: 5786 5787Added the 2009 copyright to all module headers and signons. This affects 5788virtually every file in the ACPICA core subsystem, the iASL compiler, and 5789the tools/utilities. 5790 5791Implemented a change to allow the host to override any ACPI table, 5792including 5793dynamically loaded tables. Previously, only the DSDT could be replaced by 5794the 5795host. With this change, the AcpiOsTableOverride interface is called for 5796each 5797table found in the RSDT/XSDT during ACPICA initialization, and also 5798whenever 5799a table is dynamically loaded via the AML Load operator. 5800 5801Updated FADT flag definitions, especially the Boot Architecture flags. 5802 5803Debugger: For the Find command, automatically pad the input ACPI name 5804with 5805underscores if the name is shorter than 4 characters. This enables a 5806match 5807with the actual namespace entry which is itself padded with underscores. 5808 5809Example Code and Data Size: These are the sizes for the OS-independent 5810acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5811debug version of the code includes the debug output trace mechanism and 5812has a 5813much larger code and data size. 5814 5815 Previous Release: 5816 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5817 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5818 Current Release: 5819 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5820 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5821 58222) iASL Compiler/Disassembler and Tools: 5823 5824Fix build error under Bison-2.4. 5825 5826Dissasembler: Enhanced FADT support. Added decoding of the Boot 5827Architecture 5828flags. Now decode all flags, regardless of the FADT version. Flag output 5829includes the FADT version which first defined each flag. 5830 5831The iASL -g option now dumps the RSDT to a file (in addition to the FADT 5832and 5833DSDT). Windows only. 5834 5835---------------------------------------- 583604 December 2008. Summary of changes for version 20081204: 5837 58381) ACPI CA Core Subsystem: 5839 5840The ACPICA Programmer Reference has been completely updated and revamped 5841for 5842this release. This includes updates to the external interfaces, OSL 5843interfaces, the overview sections, and the debugger reference. 5844 5845Several new ACPICA interfaces have been implemented and documented in the 5846programmer reference: 5847AcpiReset - Writes the reset value to the FADT-defined reset register. 5848AcpiDisableAllGpes - Disable all available GPEs. 5849AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 5850AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 5851AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 5852AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 5853AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 5854 5855Most of the public ACPI hardware-related interfaces have been moved to a 5856new 5857file, components/hardware/hwxface.c 5858 5859Enhanced the FADT parsing and low-level ACPI register access: The ACPI 5860register lengths within the FADT are now used, and the low level ACPI 5861register access no longer hardcodes the ACPI register lengths. Given that 5862there may be some risk in actually trusting the FADT register lengths, a 5863run- 5864time option was added to fall back to the default hardcoded lengths if 5865the 5866FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 5867option is set to true for now, and a warning is issued if a suspicious 5868FADT 5869register length is overridden with the default value. 5870 5871Fixed a reference count issue in NsRepairObject. This problem was 5872introduced 5873in version 20081031 as part of a fix to repair Buffer objects within 5874Packages. Lin Ming. 5875 5876Added semaphore support to the Linux/Unix application OS-services layer 5877(OSL). ACPICA BZ 448. Lin Ming. 5878 5879Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 5880will 5881be implemented in the OSL, or will binary semaphores be used instead. 5882 5883Example Code and Data Size: These are the sizes for the OS-independent 5884acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5885debug version of the code includes the debug output trace mechanism and 5886has a 5887much larger code and data size. 5888 5889 Previous Release: 5890 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5891 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5892 Current Release: 5893 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5894 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5895 58962) iASL Compiler/Disassembler and Tools: 5897 5898iASL: Completed the '-e' option to include additional ACPI tables in 5899order 5900to 5901aid with disassembly and External statement generation. ACPICA BZ 742. 5902Lin 5903Ming. 5904 5905iASL: Removed the "named object in while loop" error. The compiler cannot 5906determine how many times a loop will execute. ACPICA BZ 730. 5907 5908Disassembler: Implemented support for FADT revision 2 (MS extension). 5909ACPICA 5910BZ 743. 5911 5912Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 5913MCFG). 5914 5915---------------------------------------- 591631 October 2008. Summary of changes for version 20081031: 5917 59181) ACPI CA Core Subsystem: 5919 5920Restructured the ACPICA header files into public/private. acpi.h now 5921includes 5922only the "public" acpica headers. All other acpica headers are "private" 5923and 5924should not be included by acpica users. One new file, accommon.h is used 5925to 5926include the commonly used private headers for acpica code generation. 5927Future 5928plans include moving all private headers to a new subdirectory. 5929 5930Implemented an automatic Buffer->String return value conversion for 5931predefined ACPI methods. For these methods (such as _BIF), added 5932automatic 5933conversion for return objects that are required to be a String, but a 5934Buffer 5935was found instead. This can happen when reading string battery data from 5936an 5937operation region, because it used to be difficult to convert the data 5938from 5939buffer to string from within the ASL. Ensures that the host OS is 5940provided 5941with a valid null-terminated string. Linux BZ 11822. 5942 5943Updated the FACS waking vector interfaces. Split 5944AcpiSetFirmwareWakingVector 5945into two: one for the 32-bit vector, another for the 64-bit vector. This 5946is 5947required because the host OS must setup the wake much differently for 5948each 5949vector (real vs. protected mode, etc.) and the interface itself should 5950not 5951be 5952deciding which vector to use. Also, eliminated the 5953GetFirmwareWakingVector 5954interface, as it served no purpose (only the firmware reads the vector, 5955OS 5956only writes the vector.) ACPICA BZ 731. 5957 5958Implemented a mechanism to escape infinite AML While() loops. Added a 5959loop 5960counter to force exit from AML While loops if the count becomes too 5961large. 5962This can occur in poorly written AML when the hardware does not respond 5963within a while loop and the loop does not implement a timeout. The 5964maximum 5965loop count is configurable. A new exception code is returned when a loop 5966is 5967broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 5968 5969Optimized the execution of AML While loops. Previously, a control state 5970object was allocated and freed for each execution of the loop. The 5971optimization is to simply reuse the control state for each iteration. 5972This 5973speeds up the raw loop execution time by about 5%. 5974 5975Enhanced the implicit return mechanism. For Windows compatibility, return 5976an 5977implicit integer of value zero for methods that contain no executable 5978code. 5979Such methods are seen in the field as stubs (presumably), and can cause 5980drivers to fail if they expect a return value. Lin Ming. 5981 5982Allow multiple backslashes as root prefixes in namepaths. In a fully 5983qualified namepath, allow multiple backslash prefixes. This can happen 5984(and 5985is seen in the field) because of the use of a double-backslash in strings 5986(since backslash is the escape character) causing confusion. ACPICA BZ 5987739 5988Lin Ming. 5989 5990Emit a warning if two different FACS or DSDT tables are discovered in the 5991FADT. Checks if there are two valid but different addresses for the FACS 5992and 5993DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 5994 5995Consolidated the method argument count validation code. Merged the code 5996that 5997validates control method argument counts into the predefined validation 5998module. Eliminates possible multiple warnings for incorrect argument 5999counts. 6000 6001Implemented ACPICA example code. Includes code for ACPICA initialization, 6002handler installation, and calling a control method. Available at 6003source/tools/examples. 6004 6005Added a global pointer for FACS table to simplify internal FACS access. 6006Use 6007the global pointer instead of using AcpiGetTableByIndex for each FACS 6008access. 6009This simplifies the code for the Global Lock and the Firmware Waking 6010Vector(s). 6011 6012Example Code and Data Size: These are the sizes for the OS-independent 6013acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6014debug version of the code includes the debug output trace mechanism and 6015has a 6016much larger code and data size. 6017 6018 Previous Release: 6019 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6020 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6021 Current Release: 6022 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6023 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6024 60252) iASL Compiler/Disassembler and Tools: 6026 6027iASL: Improved disassembly of external method calls. Added the -e option 6028to 6029allow the inclusion of additional ACPI tables to help with the 6030disassembly 6031of 6032method invocations and the generation of external declarations during the 6033disassembly. Certain external method invocations cannot be disassembled 6034properly without the actual declaration of the method. Use the -e option 6035to 6036include the table where the external method(s) are actually declared. 6037Most 6038useful for disassembling SSDTs that make method calls back to the master 6039DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 6040-d 6041-e dsdt.aml ssdt1.aml 6042 6043iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 6044problem where the use of an alias within a namepath would result in a not 6045found error or cause the compiler to fault. Also now allows forward 6046references from the Alias operator itself. ACPICA BZ 738. 6047 6048---------------------------------------- 604926 September 2008. Summary of changes for version 20080926: 6050 60511) ACPI CA Core Subsystem: 6052 6053Designed and implemented a mechanism to validate predefined ACPI methods 6054and 6055objects. This code validates the predefined ACPI objects (objects whose 6056names 6057start with underscore) that appear in the namespace, at the time they are 6058evaluated. The argument count and the type of the returned object are 6059validated against the ACPI specification. The purpose of this validation 6060is 6061to detect problems with the BIOS-implemented predefined ACPI objects 6062before 6063the results are returned to the ACPI-related drivers. Future enhancements 6064may 6065include actual repair of incorrect return objects where possible. Two new 6066files are nspredef.c and acpredef.h. 6067 6068Fixed a fault in the AML parser if a memory allocation fails during the 6069Op 6070completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 6071 6072Fixed an issue with implicit return compatibility. This change improves 6073the 6074implicit return mechanism to be more compatible with the MS interpreter. 6075Lin 6076Ming, ACPICA BZ 349. 6077 6078Implemented support for zero-length buffer-to-string conversions. Allow 6079zero 6080length strings during interpreter buffer-to-string conversions. For 6081example, 6082during the ToDecimalString and ToHexString operators, as well as implicit 6083conversions. Fiodor Suietov, ACPICA BZ 585. 6084 6085Fixed two possible memory leaks in the error exit paths of 6086AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 6087are 6088similar in that they use a stack of state objects in order to eliminate 6089recursion. The stack must be fully unwound and deallocated if an error 6090occurs. Lin Ming. ACPICA BZ 383. 6091 6092Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 6093global 6094ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 6095Moore ACPICA BZ 442. 6096 6097Removed the obsolete version number in module headers. Removed the 6098"$Revision" number that appeared in each module header. This version 6099number 6100was useful under SourceSafe and CVS, but has no meaning under git. It is 6101not 6102only incorrect, it could also be misleading. 6103 6104Example Code and Data Size: These are the sizes for the OS-independent 6105acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6106debug version of the code includes the debug output trace mechanism and 6107has a 6108much larger code and data size. 6109 6110 Previous Release: 6111 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6112 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6113 Current Release: 6114 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6115 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6116 6117---------------------------------------- 611829 August 2008. Summary of changes for version 20080829: 6119 61201) ACPI CA Core Subsystem: 6121 6122Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 6123Reference. Changes include the elimination of cheating on the Object 6124field 6125for the DdbHandle subtype, addition of a reference class field to 6126differentiate the various reference types (instead of an AML opcode), and 6127the 6128cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 6129 6130Reduce an error to a warning for an incorrect method argument count. 6131Previously aborted with an error if too few arguments were passed to a 6132control method via the external ACPICA interface. Now issue a warning 6133instead 6134and continue. Handles the case where the method inadvertently declares 6135too 6136many arguments, but does not actually use the extra ones. Applies mainly 6137to 6138the predefined methods. Lin Ming. Linux BZ 11032. 6139 6140Disallow the evaluation of named object types with no intrinsic value. 6141Return 6142AE_TYPE for objects that have no value and therefore evaluation is 6143undefined: 6144Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 6145of 6146these types were allowed, but an exception would be generated at some 6147point 6148during the evaluation. Now, the error is generated up front. 6149 6150Fixed a possible memory leak in the AcpiNsGetExternalPathname function 6151(nsnames.c). Fixes a leak in the error exit path. 6152 6153Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 6154debug 6155levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 6156ACPI_EXCEPTION 6157interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 6158ACPI_LV_EVENTS. 6159 6160Removed obsolete and/or unused exception codes from the acexcep.h header. 6161There is the possibility that certain device drivers may be affected if 6162they 6163use any of these exceptions. 6164 6165The ACPICA documentation has been added to the public git source tree, 6166under 6167acpica/documents. Included are the ACPICA programmer reference, the iASL 6168compiler reference, and the changes.txt release logfile. 6169 6170Example Code and Data Size: These are the sizes for the OS-independent 6171acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6172debug version of the code includes the debug output trace mechanism and 6173has a 6174much larger code and data size. 6175 6176 Previous Release: 6177 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6178 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6179 Current Release: 6180 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6181 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6182 61832) iASL Compiler/Disassembler and Tools: 6184 6185Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 6186defines _SCP with 3 arguments. Previous versions defined it with only 1 6187argument. iASL now allows both definitions. 6188 6189iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 6190zero- 6191length subtables when disassembling ACPI tables. Also fixed a couple of 6192errors where a full 16-bit table type field was not extracted from the 6193input 6194properly. 6195 6196acpisrc: Improve comment counting mechanism for generating source code 6197statistics. Count first and last lines of multi-line comments as 6198whitespace, 6199not comment lines. Handle Linux legal header in addition to standard 6200acpica 6201header. 6202 6203---------------------------------------- 6204 620529 July 2008. Summary of changes for version 20080729: 6206 62071) ACPI CA Core Subsystem: 6208 6209Fix a possible deadlock in the GPE dispatch. Remove call to 6210AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 6211attempt 6212to acquire the GPE lock but can deadlock since the GPE lock is already 6213held 6214at dispatch time. This code was introduced in version 20060831 as a 6215response 6216to Linux BZ 6881 and has since been removed from Linux. 6217 6218Add a function to dereference returned reference objects. Examines the 6219return 6220object from a call to AcpiEvaluateObject. Any Index or RefOf references 6221are 6222automatically dereferenced in an attempt to return something useful 6223(these 6224reference types cannot be converted into an external ACPI_OBJECT.) 6225Provides 6226MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 6227 6228x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 6229subtables for the MADT and one new subtable for the SRAT. Includes 6230disassembler and AcpiSrc support. Data from the Intel 64 Architecture 6231x2APIC 6232Specification, June 2008. 6233 6234Additional error checking for pathname utilities. Add error check after 6235all 6236calls to AcpiNsGetPathnameLength. Add status return from 6237AcpiNsBuildExternalPath and check after all calls. Add parameter 6238validation 6239to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 6240 6241Return status from the global init function AcpiUtGlobalInitialize. This 6242is 6243used by both the kernel subsystem and the utilities such as iASL 6244compiler. 6245The function could possibly fail when the caches are initialized. Yang 6246Yi. 6247 6248Add a function to decode reference object types to strings. Created for 6249improved error messages. 6250 6251Improve object conversion error messages. Better error messages during 6252object 6253conversion from internal to the external ACPI_OBJECT. Used for external 6254calls 6255to AcpiEvaluateObject. 6256 6257Example Code and Data Size: These are the sizes for the OS-independent 6258acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6259debug version of the code includes the debug output trace mechanism and 6260has a 6261much larger code and data size. 6262 6263 Previous Release: 6264 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6265 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6266 Current Release: 6267 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6268 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6269 62702) iASL Compiler/Disassembler and Tools: 6271 6272Debugger: fix a possible hang when evaluating non-methods. Fixes a 6273problem 6274introduced in version 20080701. If the object being evaluated (via 6275execute 6276command) is not a method, the debugger can hang while trying to obtain 6277non- 6278existent parameters. 6279 6280iASL: relax error for using reserved "_T_x" identifiers. These names can 6281appear in a disassembled ASL file if they were emitted by the original 6282compiler. Instead of issuing an error or warning and forcing the user to 6283manually change these names, issue a remark instead. 6284 6285iASL: error if named object created in while loop. Emit an error if any 6286named 6287object is created within a While loop. If allowed, this code will 6288generate 6289a 6290run-time error on the second iteration of the loop when an attempt is 6291made 6292to 6293create the same named object twice. ACPICA bugzilla 730. 6294 6295iASL: Support absolute pathnames for include files. Add support for 6296absolute 6297pathnames within the Include operator. previously, only relative 6298pathnames 6299were supported. 6300 6301iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 6302Descriptor. 6303The ACPI spec requires one interrupt minimum. BZ 423 6304 6305iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 6306Handles the case for the Interrupt Resource Descriptor where 6307the ResourceSource argument is omitted but ResourceSourceIndex 6308is present. Now leave room for the Index. BZ 426 6309 6310iASL: Prevent error message if CondRefOf target does not exist. Fixes 6311cases 6312where an error message is emitted if the target does not exist. BZ 516 6313 6314iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 6315(get ACPI tables on Windows). This was apparently broken in version 631620070919. 6317 6318AcpiXtract: Handle EOF while extracting data. Correctly handle the case 6319where 6320the EOF happens immediately after the last table in the input file. Print 6321completion message. Previously, no message was displayed in this case. 6322 6323---------------------------------------- 632401 July 2008. Summary of changes for version 20080701: 6325 63260) Git source tree / acpica.org 6327 6328Fixed a problem where a git-clone from http would not transfer the entire 6329source tree. 6330 63311) ACPI CA Core Subsystem: 6332 6333Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 6334enable bit. Now performs a read-change-write of the enable register 6335instead 6336of simply writing out the cached enable mask. This will prevent 6337inadvertent 6338enabling of GPEs if a rogue GPE is received during initialization (before 6339GPE 6340handlers are installed.) 6341 6342Implemented a copy for dynamically loaded tables. Previously, dynamically 6343loaded tables were simply mapped - but on some machines this memory is 6344corrupted after suspend. Now copy the table to a local buffer. For the 6345OpRegion case, added checksum verify. Use the table length from the table 6346header, not the region length. For the Buffer case, use the table length 6347also. Dennis Noordsij, Bob Moore. BZ 10734 6348 6349Fixed a problem where the same ACPI table could not be dynamically loaded 6350and 6351unloaded more than once. Without this change, a table cannot be loaded 6352again 6353once it has been loaded/unloaded one time. The current mechanism does not 6354unregister a table upon an unload. During a load, if the same table is 6355found, 6356this no longer returns an exception. BZ 722 6357 6358Fixed a problem where the wrong descriptor length was calculated for the 6359EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 6360EndTag 6361are calculated as 12 bytes long, but the actual length in the internal 6362descriptor is 16 because of the round-up to 8 on the 64-bit build. 6363Reported 6364by Linn Crosetto. BZ 728 6365 6366Fixed a possible memory leak in the Unload operator. The DdbHandle 6367returned 6368by Load() did not have its reference count decremented during unload, 6369leading 6370to a memory leak. Lin Ming. BZ 727 6371 6372Fixed a possible memory leak when deleting thermal/processor objects. Any 6373associated notify handlers (and objects) were not being deleted. Fiodor 6374Suietov. BZ 506 6375 6376Fixed the ordering of the ASCII names in the global mutex table to match 6377the 6378actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 6379only. 6380Vegard Nossum. BZ 726 6381 6382Enhanced the AcpiGetObjectInfo interface to return the number of required 6383arguments if the object is a control method. Added this call to the 6384debugger 6385so the proper number of default arguments are passed to a method. This 6386prevents a warning when executing methods from AcpiExec. 6387 6388Added a check for an invalid handle in AcpiGetObjectInfo. Return 6389AE_BAD_PARAMETER if input handle is invalid. BZ 474 6390 6391Fixed an extraneous warning from exconfig.c on the 64-bit build. 6392 6393Example Code and Data Size: These are the sizes for the OS-independent 6394acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6395debug version of the code includes the debug output trace mechanism and 6396has a 6397much larger code and data size. 6398 6399 Previous Release: 6400 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6401 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6402 Current Release: 6403 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6404 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6405 64062) iASL Compiler/Disassembler and Tools: 6407 6408iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 6409resource descriptor names. 6410 6411iASL: Detect invalid ASCII characters in input (windows version). Removed 6412the 6413"-CF" flag from the flex compile, enables correct detection of non-ASCII 6414characters in the input. BZ 441 6415 6416iASL: Eliminate warning when result of LoadTable is not used. Eliminate 6417the 6418"result of operation not used" warning when the DDB handle returned from 6419LoadTable is not used. The warning is not needed. BZ 590 6420 6421AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 6422method 6423to 6424pass address of table to the AML. Added option to disable OpRegion 6425simulation 6426to allow creation of an OpRegion with a real address that was passed to 6427_CFG. 6428All of this allows testing of the Load and Unload operators from 6429AcpiExec. 6430 6431Debugger: update tables command for unloaded tables. Handle unloaded 6432tables 6433and use the standard table header output routine. 6434 6435---------------------------------------- 643609 June 2008. Summary of changes for version 20080609: 6437 64381) ACPI CA Core Subsystem: 6439 6440Implemented a workaround for reversed _PRT entries. A significant number 6441of 6442BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 6443change dynamically detects and repairs this problem. Provides 6444compatibility 6445with MS ACPI. BZ 6859 6446 6447Simplified the internal ACPI hardware interfaces to eliminate the locking 6448flag parameter from Register Read/Write. Added a new external interface, 6449AcpiGetRegisterUnlocked. 6450 6451Fixed a problem where the invocation of a GPE control method could hang. 6452This 6453was a regression introduced in 20080514. The new method argument count 6454validation mechanism can enter an infinite loop when a GPE method is 6455dispatched. Problem fixed by removing the obsolete code that passed GPE 6456block 6457information to the notify handler via the control method parameter 6458pointer. 6459 6460Fixed a problem where the _SST execution status was incorrectly returned 6461to 6462the caller of AcpiEnterSleepStatePrep. This was a regression introduced 6463in 646420080514. _SST is optional and a NOT_FOUND exception should never be 6465returned. BZ 716 6466 6467Fixed a problem where a deleted object could be accessed from within the 6468AML 6469parser. This was a regression introduced in version 20080123 as a fix for 6470the 6471Unload operator. Lin Ming. BZ 10669 6472 6473Cleaned up the debug operand dump mechanism. Eliminated unnecessary 6474operands 6475and eliminated the use of a negative index in a loop. Operands are now 6476displayed in the correct order, not backwards. This also fixes a 6477regression 6478introduced in 20080514 on 64-bit systems where the elimination of 6479ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 6480715 6481 6482Fixed a possible memory leak in EvPciConfigRegionSetup where the error 6483exit 6484path did not delete a locally allocated structure. 6485 6486Updated definitions for the DMAR and SRAT tables to synchronize with the 6487current specifications. Includes disassembler support. 6488 6489Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 6490loop termination value was used. Loop terminated on iteration early, 6491missing 6492one mutex. Linn Crosetto 6493 6494Example Code and Data Size: These are the sizes for the OS-independent 6495acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6496debug version of the code includes the debug output trace mechanism and 6497has a 6498much larger code and data size. 6499 6500 Previous Release: 6501 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6502 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6503 Current Release: 6504 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6505 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6506 65072) iASL Compiler/Disassembler and Tools: 6508 6509Disassembler: Implemented support for EisaId() within _CID objects. Now 6510disassemble integer _CID objects back to EisaId invocations, including 6511multiple integers within _CID packages. Includes single-step support for 6512debugger also. 6513 6514Disassembler: Added support for DMAR and SRAT table definition changes. 6515 6516---------------------------------------- 651714 May 2008. Summary of changes for version 20080514: 6518 65191) ACPI CA Core Subsystem: 6520 6521Fixed a problem where GPEs were enabled too early during the ACPICA 6522initialization. This could lead to "handler not installed" errors on some 6523machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 6524This 6525ensures that all operation regions and devices throughout the namespace 6526have 6527been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 6528 6529Implemented a change to the enter sleep code. Moved execution of the _GTS 6530method to just before setting sleep enable bit. The execution was moved 6531from 6532AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 6533immediately before the SLP_EN bit is set, as per the ACPI specification. 6534Luming Yu, BZ 1653. 6535 6536Implemented a fix to disable unknown GPEs (2nd version). Now always 6537disable 6538the GPE, even if ACPICA thinks that that it is already disabled. It is 6539possible that the AML or some other code has enabled the GPE unbeknownst 6540to 6541the ACPICA code. 6542 6543Fixed a problem with the Field operator where zero-length fields would 6544return 6545an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 6546ASL 6547field declarations in Field(), BankField(), and IndexField(). BZ 10606. 6548 6549Implemented a fix for the Load operator, now load the table at the 6550namespace 6551root. This reverts a change introduced in version 20071019. The table is 6552now 6553loaded at the namespace root even though this goes against the ACPI 6554specification. This provides compatibility with other ACPI 6555implementations. 6556The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 6557Ming. 6558 6559Fixed a problem where ACPICA would not Load() tables with unusual 6560signatures. 6561Now ignore ACPI table signature for Load() operator. Only "SSDT" is 6562acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 6563Therefore, signature validation is worthless. Apparently MS ACPI accepts 6564such 6565signatures, ACPICA must be compatible. BZ 10454. 6566 6567Fixed a possible negative array index in AcpiUtValidateException. Added 6568NULL 6569fields to the exception string arrays to eliminate a -1 subtraction on 6570the 6571SubStatus field. 6572 6573Updated the debug tracking macros to reduce overall code and data size. 6574Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 6575instead of pointers to static strings. Jan Beulich and Bob Moore. 6576 6577Implemented argument count checking in control method invocation via 6578AcpiEvaluateObject. Now emit an error if too few arguments, warning if 6579too 6580many. This applies only to extern programmatic control method execution, 6581not 6582method-to-method calls within the AML. Lin Ming. 6583 6584Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 6585no 6586longer needed, especially with the removal of 16-bit support. It was 6587replaced 6588mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 6589bit 6590on 659132/64-bit platforms is required. 6592 6593Added the C const qualifier for appropriate string constants -- mostly 6594MODULE_NAME and printf format strings. Jan Beulich. 6595 6596Example Code and Data Size: These are the sizes for the OS-independent 6597acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6598debug version of the code includes the debug output trace mechanism and 6599has a 6600much larger code and data size. 6601 6602 Previous Release: 6603 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6604 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6605 Current Release: 6606 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6607 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6608 66092) iASL Compiler/Disassembler and Tools: 6610 6611Implemented ACPI table revision ID validation in the disassembler. Zero 6612is 6613always invalid. For DSDTs, the ID controls the interpreter integer width. 66141 6615means 32-bit and this is unusual. 2 or greater is 64-bit. 6616 6617---------------------------------------- 661821 March 2008. Summary of changes for version 20080321: 6619 66201) ACPI CA Core Subsystem: 6621 6622Implemented an additional change to the GPE support in order to suppress 6623spurious or stray GPEs. The AcpiEvDisableGpe function will now 6624permanently 6625disable incoming GPEs that are neither enabled nor disabled -- meaning 6626that 6627the GPE is unknown to the system. This should prevent future interrupt 6628floods 6629from that GPE. BZ 6217 (Zhang Rui) 6630 6631Fixed a problem where NULL package elements were not returned to the 6632AcpiEvaluateObject interface correctly. The element was simply ignored 6633instead of returning a NULL ACPI_OBJECT package element, potentially 6634causing 6635a buffer overflow and/or confusing the caller who expected a fixed number 6636of 6637elements. BZ 10132 (Lin Ming, Bob Moore) 6638 6639Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 6640Dword, 6641Qword), Field, BankField, and IndexField operators when invoked from 6642inside 6643an executing control method. In this case, these operators created 6644namespace 6645nodes that were incorrectly left marked as permanent nodes instead of 6646temporary nodes. This could cause a problem if there is race condition 6647between an exiting control method and a running namespace walk. (Reported 6648by 6649Linn Crosetto) 6650 6651Fixed a problem where the CreateField and CreateXXXField operators would 6652incorrectly allow duplicate names (the name of the field) with no 6653exception 6654generated. 6655 6656Implemented several changes for Notify handling. Added support for new 6657Notify 6658values (ACPI 2.0+) and improved the Notify debug output. Notify on 6659PowerResource objects is no longer allowed, as per the ACPI 6660specification. 6661(Bob Moore, Zhang Rui) 6662 6663All Reference Objects returned via the AcpiEvaluateObject interface are 6664now 6665marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 6666for 6667NULL objects - either NULL package elements or unresolved named 6668references. 6669 6670Fixed a problem where an extraneous debug message was produced for 6671package 6672objects (when debugging enabled). The message "Package List length larger 6673than NumElements count" is now produced in the correct case, and is now 6674an 6675error message rather than a debug message. Added a debug message for the 6676opposite case, where NumElements is larger than the Package List (the 6677package 6678will be padded out with NULL elements as per the ACPI spec.) 6679 6680Implemented several improvements for the output of the ASL "Debug" object 6681to 6682clarify and keep all data for a given object on one output line. 6683 6684Fixed two size calculation issues with the variable-length Start 6685Dependent 6686resource descriptor. 6687 6688Example Code and Data Size: These are the sizes for the OS-independent 6689acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6690debug version of the code includes the debug output trace mechanism and 6691has 6692a much larger code and data size. 6693 6694 Previous Release: 6695 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6696 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6697 Current Release: 6698 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6699 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6700 67012) iASL Compiler/Disassembler and Tools: 6702 6703Fixed a problem with the use of the Switch operator where execution of 6704the 6705containing method by multiple concurrent threads could cause an 6706AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 6707actual Switch opcode, it must be simulated with local named temporary 6708variables and if/else pairs. The solution chosen was to mark any method 6709that 6710uses Switch as Serialized, thus preventing multiple thread entries. BZ 6711469. 6712 6713---------------------------------------- 671413 February 2008. Summary of changes for version 20080213: 6715 67161) ACPI CA Core Subsystem: 6717 6718Implemented another MS compatibility design change for GPE/Notify 6719handling. 6720GPEs are now cleared/enabled asynchronously to allow all pending notifies 6721to 6722complete first. It is expected that the OSL will queue the enable request 6723behind all pending notify requests (may require changes to the local host 6724OSL 6725in AcpiOsExecute). Alexey Starikovskiy. 6726 6727Fixed a problem where buffer and package objects passed as arguments to a 6728control method via the external AcpiEvaluateObject interface could cause 6729an 6730AE_AML_INTERNAL exception depending on the order and type of operators 6731executed by the target control method. 6732 6733Fixed a problem where resource descriptor size optimization could cause a 6734problem when a _CRS resource template is passed to a _SRS method. The 6735_SRS 6736resource template must use the same descriptors (with the same size) as 6737returned from _CRS. This change affects the following resource 6738descriptors: 6739IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 67409487) 6741 6742Fixed a problem where a CopyObject to RegionField, BankField, and 6743IndexField 6744objects did not perform an implicit conversion as it should. These types 6745must 6746retain their initial type permanently as per the ACPI specification. 6747However, 6748a CopyObject to all other object types should not perform an implicit 6749conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 6750 6751Fixed a problem with the AcpiGetDevices interface where the mechanism to 6752match device CIDs did not examine the entire list of available CIDs, but 6753instead aborted on the first non-matching CID. Andrew Patterson. 6754 6755Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 6756was 6757inadvertently changed to return a 16-bit value instead of a 32-bit value, 6758truncating the upper dword of a 64-bit value. This macro is only used to 6759display debug output, so no incorrect calculations were made. Also, 6760reimplemented the macro so that a 64-bit shift is not performed by 6761inefficient compilers. 6762 6763Added missing va_end statements that should correspond with each va_start 6764statement. 6765 6766Example Code and Data Size: These are the sizes for the OS-independent 6767acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6768debug version of the code includes the debug output trace mechanism and 6769has 6770a much larger code and data size. 6771 6772 Previous Release: 6773 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6774 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6775 Current Release: 6776 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6777 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6778 67792) iASL Compiler/Disassembler and Tools: 6780 6781Implemented full disassembler support for the following new ACPI tables: 6782BERT, EINJ, and ERST. Implemented partial disassembler support for the 6783complicated HEST table. These tables support the Windows Hardware Error 6784Architecture (WHEA). 6785 6786---------------------------------------- 678723 January 2008. Summary of changes for version 20080123: 6788 67891) ACPI CA Core Subsystem: 6790 6791Added the 2008 copyright to all module headers and signons. This affects 6792virtually every file in the ACPICA core subsystem, the iASL compiler, and 6793the tools/utilities. 6794 6795Fixed a problem with the SizeOf operator when used with Package and 6796Buffer 6797objects. These objects have deferred execution for some arguments, and 6798the 6799execution is now completed before the SizeOf is executed. This problem 6800caused 6801unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 6802BZ 68039558 6804 6805Implemented an enhancement to the interpreter "slack mode". In the 6806absence 6807of 6808an explicit return or an implicitly returned object from the last 6809executed 6810opcode, a control method will now implicitly return an integer of value 0 6811for 6812Microsoft compatibility. (Lin Ming) BZ 392 6813 6814Fixed a problem with the Load operator where an exception was not 6815returned 6816in 6817the case where the table is already loaded. (Lin Ming) BZ 463 6818 6819Implemented support for the use of DDBHandles as an Indexed Reference, as 6820per 6821the ACPI spec. (Lin Ming) BZ 486 6822 6823Implemented support for UserTerm (Method invocation) for the Unload 6824operator 6825as per the ACPI spec. (Lin Ming) BZ 580 6826 6827Fixed a problem with the LoadTable operator where the OemId and 6828OemTableId 6829input strings could cause unexpected failures if they were shorter than 6830the 6831maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 6832 6833Implemented support for UserTerm (Method invocation) for the Unload 6834operator 6835as per the ACPI spec. (Lin Ming) BZ 580 6836 6837Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 6838HEST, 6839IBFT, UEFI, WDAT. Disassembler support is forthcoming. 6840 6841Example Code and Data Size: These are the sizes for the OS-independent 6842acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6843debug version of the code includes the debug output trace mechanism and 6844has 6845a much larger code and data size. 6846 6847 Previous Release: 6848 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6849 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6850 Current Release: 6851 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6852 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6853 68542) iASL Compiler/Disassembler and Tools: 6855 6856Implemented support in the disassembler for checksum validation on 6857incoming 6858binary DSDTs and SSDTs. If incorrect, a message is displayed within the 6859table 6860header dump at the start of the disassembly. 6861 6862Implemented additional debugging information in the namespace listing 6863file 6864created during compilation. In addition to the namespace hierarchy, the 6865full 6866pathname to each namespace object is displayed. 6867 6868Fixed a problem with the disassembler where invalid ACPI tables could 6869cause 6870faults or infinite loops. 6871 6872Fixed an unexpected parse error when using the optional "parameter types" 6873list in a control method declaration. (Lin Ming) BZ 397 6874 6875Fixed a problem where two External declarations with the same name did 6876not 6877cause an error (Lin Ming) BZ 509 6878 6879Implemented support for full TermArgs (adding Argx, Localx and method 6880invocation) for the ParameterData parameter to the LoadTable operator. 6881(Lin 6882Ming) BZ 583,587 6883 6884---------------------------------------- 688519 December 2007. Summary of changes for version 20071219: 6886 68871) ACPI CA Core Subsystem: 6888 6889Implemented full support for deferred execution for the TermArg string 6890arguments for DataTableRegion. This enables forward references and full 6891operand resolution for the three string arguments. Similar to 6892OperationRegion 6893deferred argument execution.) Lin Ming. BZ 430 6894 6895Implemented full argument resolution support for the BankValue argument 6896to 6897BankField. Previously, only constants were supported, now any TermArg may 6898be 6899used. Lin Ming BZ 387, 393 6900 6901Fixed a problem with AcpiGetDevices where the search of a branch of the 6902device tree could be terminated prematurely. In accordance with the ACPI 6903specification, the search down the current branch is terminated if a 6904device 6905is both not present and not functional (instead of just not present.) 6906Yakui 6907Zhao. 6908 6909Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 6910if 6911the underlying AML code changed the GPE enable registers. Now, any 6912unknown 6913incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 6914disabled 6915instead of simply ignored. Rui Zhang. 6916 6917Fixed a problem with Index Fields where the Index register was 6918incorrectly 6919limited to a maximum of 32 bits. Now any size may be used. 6920 6921Fixed a couple memory leaks associated with "implicit return" objects 6922when 6923the AML Interpreter slack mode is enabled. Lin Ming BZ 349 6924 6925Example Code and Data Size: These are the sizes for the OS-independent 6926acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6927debug version of the code includes the debug output trace mechanism and 6928has 6929a much larger code and data size. 6930 6931 Previous Release: 6932 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6933 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6934 Current Release: 6935 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6936 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6937 6938---------------------------------------- 693914 November 2007. Summary of changes for version 20071114: 6940 69411) ACPI CA Core Subsystem: 6942 6943Implemented event counters for each of the Fixed Events, the ACPI SCI 6944(interrupt) itself, and control methods executed. Named 6945AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 6946These 6947should be useful for debugging and statistics. 6948 6949Implemented a new external interface, AcpiGetStatistics, to retrieve the 6950contents of the various event counters. Returns the current values for 6951AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 6952AcpiMethodCount. The interface can be expanded in the future if new 6953counters 6954are added. Device drivers should use this interface rather than access 6955the 6956counters directly. 6957 6958Fixed a problem with the FromBCD and ToBCD operators. With some 6959compilers, 6960the ShortDivide function worked incorrectly, causing problems with the 6961BCD 6962functions with large input values. A truncation from 64-bit to 32-bit 6963inadvertently occurred. Internal BZ 435. Lin Ming 6964 6965Fixed a problem with Index references passed as method arguments. 6966References 6967passed as arguments to control methods were dereferenced immediately 6968(before 6969control was passed to the called method). The references are now 6970correctly 6971passed directly to the called method. BZ 5389. Lin Ming 6972 6973Fixed a problem with CopyObject used in conjunction with the Index 6974operator. 6975The reference was incorrectly dereferenced before the copy. The reference 6976is 6977now correctly copied. BZ 5391. Lin Ming 6978 6979Fixed a problem with Control Method references within Package objects. 6980These 6981references are now correctly generated. This completes the package 6982construction overhaul that began in version 20071019. 6983 6984Example Code and Data Size: These are the sizes for the OS-independent 6985acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6986debug version of the code includes the debug output trace mechanism and 6987has 6988a much larger code and data size. 6989 6990 Previous Release: 6991 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6992 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6993 Current Release: 6994 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6995 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6996 6997 69982) iASL Compiler/Disassembler and Tools: 6999 7000The AcpiExec utility now installs handlers for all of the predefined 7001Operation Region types. New types supported are: PCI_Config, CMOS, and 7002PCIBARTarget. 7003 7004Fixed a problem with the 64-bit version of AcpiExec where the extended 7005(64- 7006bit) address fields for the DSDT and FACS within the FADT were not being 7007used, causing truncation of the upper 32-bits of these addresses. Lin 7008Ming 7009and Bob Moore 7010 7011---------------------------------------- 701219 October 2007. Summary of changes for version 20071019: 7013 70141) ACPI CA Core Subsystem: 7015 7016Fixed a problem with the Alias operator when the target of the alias is a 7017named ASL operator that opens a new scope -- Scope, Device, 7018PowerResource, 7019Processor, and ThermalZone. In these cases, any children of the original 7020operator could not be accessed via the alias, potentially causing 7021unexpected 7022AE_NOT_FOUND exceptions. (BZ 9067) 7023 7024Fixed a problem with the Package operator where all named references were 7025created as object references and left otherwise unresolved. According to 7026the 7027ACPI specification, a Package can only contain Data Objects or references 7028to 7029control methods. The implication is that named references to Data Objects 7030(Integer, Buffer, String, Package, BufferField, Field) should be resolved 7031immediately upon package creation. This is the approach taken with this 7032change. References to all other named objects (Methods, Devices, Scopes, 7033etc.) are all now properly created as reference objects. (BZ 5328) 7034 7035Reverted a change to Notify handling that was introduced in version 703620070508. This version changed the Notify handling from asynchronous to 7037fully synchronous (Device driver Notify handling with respect to the 7038Notify 7039ASL operator). It was found that this change caused more problems than it 7040solved and was removed by most users. 7041 7042Fixed a problem with the Increment and Decrement operators where the type 7043of 7044the target object could be unexpectedly and incorrectly changed. (BZ 353) 7045Lin Ming. 7046 7047Fixed a problem with the Load and LoadTable operators where the table 7048location within the namespace was ignored. Instead, the table was always 7049loaded into the root or current scope. Lin Ming. 7050 7051Fixed a problem with the Load operator when loading a table from a buffer 7052object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 7053 7054Fixed a problem with the Debug object where a store of a DdbHandle 7055reference 7056object to the Debug object could cause a fault. 7057 7058Added a table checksum verification for the Load operator, in the case 7059where 7060the load is from a buffer. (BZ 578). 7061 7062Implemented additional parameter validation for the LoadTable operator. 7063The 7064length of the input strings SignatureString, OemIdString, and OemTableId 7065are 7066now checked for maximum lengths. (BZ 582) Lin Ming. 7067 7068Example Code and Data Size: These are the sizes for the OS-independent 7069acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7070debug version of the code includes the debug output trace mechanism and 7071has 7072a much larger code and data size. 7073 7074 Previous Release: 7075 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7076 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7077 Current Release: 7078 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7079 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7080 7081 70822) iASL Compiler/Disassembler: 7083 7084Fixed a problem where if a single file was specified and the file did not 7085exist, no error message was emitted. (Introduced with wildcard support in 7086version 20070917.) 7087 7088---------------------------------------- 708919 September 2007. Summary of changes for version 20070919: 7090 70911) ACPI CA Core Subsystem: 7092 7093Designed and implemented new external interfaces to install and remove 7094handlers for ACPI table-related events. Current events that are defined 7095are 7096LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 7097they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 7098AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 7099 7100Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 7101(acpi_serialized option on Linux) could cause some systems to hang during 7102initialization. (Bob Moore) BZ 8171 7103 7104Fixed a problem where objects of certain types (Device, ThermalZone, 7105Processor, PowerResource) can be not found if they are declared and 7106referenced from within the same control method (Lin Ming) BZ 341 7107 7108Example Code and Data Size: These are the sizes for the OS-independent 7109acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7110debug version of the code includes the debug output trace mechanism and 7111has 7112a much larger code and data size. 7113 7114 Previous Release: 7115 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7116 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7117 Current Release: 7118 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7119 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7120 7121 71222) iASL Compiler/Disassembler: 7123 7124Implemented support to allow multiple files to be compiled/disassembled 7125in 7126a 7127single invocation. This includes command line wildcard support for both 7128the 7129Windows and Unix versions of the compiler. This feature simplifies the 7130disassembly and compilation of multiple ACPI tables in a single 7131directory. 7132 7133---------------------------------------- 713408 May 2007. Summary of changes for version 20070508: 7135 71361) ACPI CA Core Subsystem: 7137 7138Implemented a Microsoft compatibility design change for the handling of 7139the 7140Notify AML operator. Previously, notify handlers were dispatched and 7141executed completely asynchronously in a deferred thread. The new design 7142still executes the notify handlers in a different thread, but the 7143original 7144thread that executed the Notify() now waits at a synchronization point 7145for 7146the notify handler to complete. Some machines depend on a synchronous 7147Notify 7148operator in order to operate correctly. 7149 7150Implemented support to allow Package objects to be passed as method 7151arguments to the external AcpiEvaluateObject interface. Previously, this 7152would return the AE_NOT_IMPLEMENTED exception. This feature had not been 7153implemented since there were no reserved control methods that required it 7154until recently. 7155 7156Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 7157that 7158contained invalid non-zero values in reserved fields could cause later 7159failures because these fields have meaning in later revisions of the 7160FADT. 7161For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 7162fields 7163are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 7164 7165Fixed a problem where the Global Lock handle was not properly updated if 7166a 7167thread that acquired the Global Lock via executing AML code then 7168attempted 7169to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 7170Joe 7171Liu. 7172 7173Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 7174could be corrupted if the interrupt being removed was at the head of the 7175list. Reported by Linn Crosetto. 7176 7177Example Code and Data Size: These are the sizes for the OS-independent 7178acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7179debug version of the code includes the debug output trace mechanism and 7180has 7181a much larger code and data size. 7182 7183 Previous Release: 7184 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7185 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7186 Current Release: 7187 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7188 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7189 7190---------------------------------------- 719120 March 2007. Summary of changes for version 20070320: 7192 71931) ACPI CA Core Subsystem: 7194 7195Implemented a change to the order of interpretation and evaluation of AML 7196operand objects within the AML interpreter. The interpreter now evaluates 7197operands in the order that they appear in the AML stream (and the 7198corresponding ASL code), instead of in the reverse order (after the 7199entire 7200operand list has been parsed). The previous behavior caused several 7201subtle 7202incompatibilities with the Microsoft AML interpreter as well as being 7203somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 7204 7205Implemented a change to the ACPI Global Lock support. All interfaces to 7206the 7207global lock now allow the same thread to acquire the lock multiple times. 7208This affects the AcpiAcquireGlobalLock external interface to the global 7209lock 7210as well as the internal use of the global lock to support AML fields -- a 7211control method that is holding the global lock can now simultaneously 7212access 7213AML fields that require global lock protection. Previously, in both 7214cases, 7215this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 7216to 7217AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 7218Controller. There is no change to the behavior of the AML Acquire 7219operator, 7220as this can already be used to acquire a mutex multiple times by the same 7221thread. BZ 8066. With assistance from Alexey Starikovskiy. 7222 7223Fixed a problem where invalid objects could be referenced in the AML 7224Interpreter after error conditions. During operand evaluation, ensure 7225that 7226the internal "Return Object" field is cleared on error and only valid 7227pointers are stored there. Caused occasional access to deleted objects 7228that 7229resulted in "large reference count" warning messages. Valery Podrezov. 7230 7231Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 7232on 7233deeply nested control method invocations. BZ 7873, local BZ 487. Valery 7234Podrezov. 7235 7236Fixed an internal problem with the handling of result objects on the 7237interpreter result stack. BZ 7872. Valery Podrezov. 7238 7239Removed obsolete code that handled the case where AML_NAME_OP is the 7240target 7241of a reference (Reference.Opcode). This code was no longer necessary. BZ 72427874. Valery Podrezov. 7243 7244Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 7245was 7246a 7247remnant from the previously discontinued 16-bit support. 7248 7249Example Code and Data Size: These are the sizes for the OS-independent 7250acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7251debug version of the code includes the debug output trace mechanism and 7252has 7253a much larger code and data size. 7254 7255 Previous Release: 7256 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7257 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7258 Current Release: 7259 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7260 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7261 7262---------------------------------------- 726326 January 2007. Summary of changes for version 20070126: 7264 72651) ACPI CA Core Subsystem: 7266 7267Added the 2007 copyright to all module headers and signons. This affects 7268virtually every file in the ACPICA core subsystem, the iASL compiler, and 7269the utilities. 7270 7271Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 7272during a table load. A bad pointer was passed in the case where the DSDT 7273is 7274overridden, causing a fault in this case. 7275 7276Example Code and Data Size: These are the sizes for the OS-independent 7277acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7278debug version of the code includes the debug output trace mechanism and 7279has 7280a much larger code and data size. 7281 7282 Previous Release: 7283 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7284 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7285 Current Release: 7286 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7287 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7288 7289---------------------------------------- 729015 December 2006. Summary of changes for version 20061215: 7291 72921) ACPI CA Core Subsystem: 7293 7294Support for 16-bit ACPICA has been completely removed since it is no 7295longer 7296necessary and it clutters the code. All 16-bit macros, types, and 7297conditional compiles have been removed, cleaning up and simplifying the 7298code 7299across the entire subsystem. DOS support is no longer needed since the 7300bootable Linux firmware kit is now available. 7301 7302The handler for the Global Lock is now removed during AcpiTerminate to 7303enable a clean subsystem restart, via the implementation of the 7304AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 7305HP) 7306 7307Implemented enhancements to the multithreading support within the 7308debugger 7309to enable improved multithreading debugging and evaluation of the 7310subsystem. 7311(Valery Podrezov) 7312 7313Debugger: Enhanced the Statistics/Memory command to emit the total 7314(maximum) 7315memory used during the execution, as well as the maximum memory consumed 7316by 7317each of the various object types. (Valery Podrezov) 7318 7319Example Code and Data Size: These are the sizes for the OS-independent 7320acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7321debug version of the code includes the debug output trace mechanism and 7322has 7323a much larger code and data size. 7324 7325 Previous Release: 7326 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7327 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7328 Current Release: 7329 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7330 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7331 7332 73332) iASL Compiler/Disassembler and Tools: 7334 7335AcpiExec: Implemented a new option (-m) to display full memory use 7336statistics upon subsystem/program termination. (Valery Podrezov) 7337 7338---------------------------------------- 733909 November 2006. Summary of changes for version 20061109: 7340 73411) ACPI CA Core Subsystem: 7342 7343Optimized the Load ASL operator in the case where the source operand is 7344an 7345operation region. Simply map the operation region memory, instead of 7346performing a bytewise read. (Region must be of type SystemMemory, see 7347below.) 7348 7349Fixed the Load ASL operator for the case where the source operand is a 7350region field. A buffer object is also allowed as the source operand. BZ 7351480 7352 7353Fixed a problem where the Load ASL operator allowed the source operand to 7354be 7355an operation region of any type. It is now restricted to regions of type 7356SystemMemory, as per the ACPI specification. BZ 481 7357 7358Additional cleanup and optimizations for the new Table Manager code. 7359 7360AcpiEnable will now fail if all of the required ACPI tables are not 7361loaded 7362(FADT, FACS, DSDT). BZ 477 7363 7364Added #pragma pack(8/4) to acobject.h to ensure that the structures in 7365this 7366header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 7367manually optimized to be aligned and will not work if it is byte-packed. 7368 7369Example Code and Data Size: These are the sizes for the OS-independent 7370acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7371debug version of the code includes the debug output trace mechanism and 7372has 7373a much larger code and data size. 7374 7375 Previous Release: 7376 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7377 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7378 Current Release: 7379 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7380 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7381 7382 73832) iASL Compiler/Disassembler and Tools: 7384 7385Fixed a problem where the presence of the _OSI predefined control method 7386within complex expressions could cause an internal compiler error. 7387 7388AcpiExec: Implemented full region support for multiple address spaces. 7389SpaceId is now part of the REGION object. BZ 429 7390 7391---------------------------------------- 739211 October 2006. Summary of changes for version 20061011: 7393 73941) ACPI CA Core Subsystem: 7395 7396Completed an AML interpreter performance enhancement for control method 7397execution. Previously a 2-pass parse/execution, control methods are now 7398completely parsed and executed in a single pass. This improves overall 7399interpreter performance by ~25%, reduces code size, and reduces CPU stack 7400use. (Valery Podrezov + interpreter changes in version 20051202 that 7401eliminated namespace loading during the pass one parse.) 7402 7403Implemented _CID support for PCI Root Bridge detection. If the _HID does 7404not 7405match the predefined PCI Root Bridge IDs, the _CID list (if present) is 7406now 7407obtained and also checked for an ID match. 7408 7409Implemented additional support for the PCI _ADR execution: upsearch until 7410a 7411device scope is found before executing _ADR. This allows PCI_Config 7412operation regions to be declared locally within control methods 7413underneath 7414PCI device objects. 7415 7416Fixed a problem with a possible race condition between threads executing 7417AcpiWalkNamespace and the AML interpreter. This condition was removed by 7418modifying AcpiWalkNamespace to (by default) ignore all temporary 7419namespace 7420entries created during any concurrent control method execution. An 7421additional namespace race condition is known to exist between 7422AcpiWalkNamespace and the Load/Unload ASL operators and is still under 7423investigation. 7424 7425Restructured the AML ParseLoop function, breaking it into several 7426subfunctions in order to reduce CPU stack use and improve 7427maintainability. 7428(Mikhail Kouzmich) 7429 7430AcpiGetHandle: Fix for parameter validation to detect invalid 7431combinations 7432of prefix handle and pathname. BZ 478 7433 7434Example Code and Data Size: These are the sizes for the OS-independent 7435acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7436debug version of the code includes the debug output trace mechanism and 7437has 7438a much larger code and data size. 7439 7440 Previous Release: 7441 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7442 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7443 Current Release: 7444 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7445 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7446 74472) iASL Compiler/Disassembler and Tools: 7448 7449Ported the -g option (get local ACPI tables) to the new ACPICA Table 7450Manager 7451to restore original behavior. 7452 7453---------------------------------------- 745427 September 2006. Summary of changes for version 20060927: 7455 74561) ACPI CA Core Subsystem: 7457 7458Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 7459These functions now use a spinlock for mutual exclusion and the interrupt 7460level indication flag is not needed. 7461 7462Fixed a problem with the Global Lock where the lock could appear to be 7463obtained before it is actually obtained. The global lock semaphore was 7464inadvertently created with one unit instead of zero units. (BZ 464) 7465Fiodor 7466Suietov. 7467 7468Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 7469during 7470a read from a buffer or region field. (BZ 458) Fiodor Suietov. 7471 7472Example Code and Data Size: These are the sizes for the OS-independent 7473acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7474debug version of the code includes the debug output trace mechanism and 7475has 7476a much larger code and data size. 7477 7478 Previous Release: 7479 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7480 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7481 Current Release: 7482 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7483 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7484 7485 74862) iASL Compiler/Disassembler and Tools: 7487 7488Fixed a compilation problem with the pre-defined Resource Descriptor 7489field 7490names where an "object does not exist" error could be incorrectly 7491generated 7492if the parent ResourceTemplate pathname places the template within a 7493different namespace scope than the current scope. (BZ 7212) 7494 7495Fixed a problem where the compiler could hang after syntax errors 7496detected 7497in an ElseIf construct. (BZ 453) 7498 7499Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 7500operator. An incorrect output filename was produced when this parameter 7501was 7502a null string (""). Now, the original input filename is used as the AML 7503output filename, with an ".aml" extension. 7504 7505Implemented a generic batch command mode for the AcpiExec utility 7506(execute 7507any AML debugger command) (Valery Podrezov). 7508 7509---------------------------------------- 751012 September 2006. Summary of changes for version 20060912: 7511 75121) ACPI CA Core Subsystem: 7513 7514Enhanced the implementation of the "serialized mode" of the interpreter 7515(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 7516specified, instead of creating a serialization semaphore per control 7517method, 7518the interpreter lock is simply no longer released before a blocking 7519operation during control method execution. This effectively makes the AML 7520Interpreter single-threaded. The overhead of a semaphore per-method is 7521eliminated. 7522 7523Fixed a regression where an error was no longer emitted if a control 7524method 7525attempts to create 2 objects of the same name. This once again returns 7526AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 7527that 7528will dynamically serialize the control method to possible prevent future 7529errors. (BZ 440) 7530 7531Integrated a fix for a problem with PCI Express HID detection in the PCI 7532Config Space setup procedure. (BZ 7145) 7533 7534Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 7535AcpiHwInitialize function - the FADT registers are now validated when the 7536table is loaded. 7537 7538Added two new warnings during FADT verification - 1) if the FADT is 7539larger 7540than the largest known FADT version, and 2) if there is a mismatch 7541between 7542a 754332-bit block address and the 64-bit X counterpart (when both are non- 7544zero.) 7545 7546Example Code and Data Size: These are the sizes for the OS-independent 7547acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7548debug version of the code includes the debug output trace mechanism and 7549has 7550a much larger code and data size. 7551 7552 Previous Release: 7553 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7554 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7555 Current Release: 7556 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7557 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7558 7559 75602) iASL Compiler/Disassembler and Tools: 7561 7562Fixed a problem with the implementation of the Switch() operator where 7563the 7564temporary variable was declared too close to the actual Switch, instead 7565of 7566at method level. This could cause a problem if the Switch() operator is 7567within a while loop, causing an error on the second iteration. (BZ 460) 7568 7569Disassembler - fix for error emitted for unknown type for target of scope 7570operator. Now, ignore it and continue. 7571 7572Disassembly of an FADT now verifies the input FADT and reports any errors 7573found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 7574 7575Disassembly of raw data buffers with byte initialization data now 7576prefixes 7577each output line with the current buffer offset. 7578 7579Disassembly of ASF! table now includes all variable-length data fields at 7580the end of some of the subtables. 7581 7582The disassembler now emits a comment if a buffer appears to be a 7583ResourceTemplate, but cannot be disassembled as such because the EndTag 7584does 7585not appear at the very end of the buffer. 7586 7587AcpiExec - Added the "-t" command line option to enable the serialized 7588mode 7589of the AML interpreter. 7590 7591---------------------------------------- 759231 August 2006. Summary of changes for version 20060831: 7593 75941) ACPI CA Core Subsystem: 7595 7596Miscellaneous fixes for the Table Manager: 7597- Correctly initialize internal common FADT for all 64-bit "X" fields 7598- Fixed a couple table mapping issues during table load 7599- Fixed a couple alignment issues for IA64 7600- Initialize input array to zero in AcpiInitializeTables 7601- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 7602AcpiGetTableByIndex 7603 7604Change for GPE support: when a "wake" GPE is received, all wake GPEs are 7605now 7606immediately disabled to prevent the waking GPE from firing again and to 7607prevent other wake GPEs from interrupting the wake process. 7608 7609Added the AcpiGpeCount global that tracks the number of processed GPEs, 7610to 7611be used for debugging systems with a large number of ACPI interrupts. 7612 7613Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 7614both the ACPICA headers and the disassembler. 7615 7616Example Code and Data Size: These are the sizes for the OS-independent 7617acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7618debug version of the code includes the debug output trace mechanism and 7619has 7620a much larger code and data size. 7621 7622 Previous Release: 7623 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7624 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7625 Current Release: 7626 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7627 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7628 7629 76302) iASL Compiler/Disassembler and Tools: 7631 7632Disassembler support for the DMAR ACPI table. 7633 7634---------------------------------------- 763523 August 2006. Summary of changes for version 20060823: 7636 76371) ACPI CA Core Subsystem: 7638 7639The Table Manager component has been completely redesigned and 7640reimplemented. The new design is much simpler, and reduces the overall 7641code 7642and data size of the kernel-resident ACPICA by approximately 5%. Also, it 7643is 7644now possible to obtain the ACPI tables very early during kernel 7645initialization, even before dynamic memory management is initialized. 7646(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 7647 7648Obsolete ACPICA interfaces: 7649 7650- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 7651init 7652time). 7653- AcpiLoadTable: Not needed. 7654- AcpiUnloadTable: Not needed. 7655 7656New ACPICA interfaces: 7657 7658- AcpiInitializeTables: Must be called before the table manager can be 7659used. 7660- AcpiReallocateRootTable: Used to transfer the root table to dynamically 7661allocated memory after it becomes available. 7662- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 7663tables 7664in the RSDT/XSDT. 7665 7666Other ACPICA changes: 7667 7668- AcpiGetTableHeader returns the actual mapped table header, not a copy. 7669Use 7670AcpiOsUnmapMemory to free this mapping. 7671- AcpiGetTable returns the actual mapped table. The mapping is managed 7672internally and must not be deleted by the caller. Use of this interface 7673causes no additional dynamic memory allocation. 7674- AcpiFindRootPointer: Support for physical addressing has been 7675eliminated, 7676it appeared to be unused. 7677- The interface to AcpiOsMapMemory has changed to be consistent with the 7678other allocation interfaces. 7679- The interface to AcpiOsGetRootPointer has changed to eliminate 7680unnecessary 7681parameters. 7682- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 768364- 7684bit platforms. Was previously 64 bits on all platforms. 7685- The interface to the ACPI Global Lock acquire/release macros have 7686changed 7687slightly since ACPICA no longer keeps a local copy of the FACS with a 7688constructed pointer to the actual global lock. 7689 7690Porting to the new table manager: 7691 7692- AcpiInitializeTables: Must be called once, and can be called anytime 7693during the OS initialization process. It allows the host to specify an 7694area 7695of memory to be used to store the internal version of the RSDT/XSDT (root 7696table). This allows the host to access ACPI tables before memory 7697management 7698is initialized and running. 7699- AcpiReallocateRootTable: Can be called after memory management is 7700running 7701to copy the root table to a dynamically allocated array, freeing up the 7702scratch memory specified in the call to AcpiInitializeTables. 7703- AcpiSubsystemInitialize: This existing interface is independent of the 7704Table Manager, and does not have to be called before the Table Manager 7705can 7706be used, it only must be called before the rest of ACPICA can be used. 7707- ACPI Tables: Some changes have been made to the names and structure of 7708the 7709actbl.h and actbl1.h header files and may require changes to existing 7710code. 7711For example, bitfields have been completely removed because of their lack 7712of 7713portability across C compilers. 7714- Update interfaces to the Global Lock acquire/release macros if local 7715versions are used. (see acwin.h) 7716 7717Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 7718 7719New files: tbfind.c 7720 7721Example Code and Data Size: These are the sizes for the OS-independent 7722acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7723debug version of the code includes the debug output trace mechanism and 7724has 7725a much larger code and data size. 7726 7727 Previous Release: 7728 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7729 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7730 Current Release: 7731 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7732 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7733 7734 77352) iASL Compiler/Disassembler and Tools: 7736 7737No changes for this release. 7738 7739---------------------------------------- 774021 July 2006. Summary of changes for version 20060721: 7741 77421) ACPI CA Core Subsystem: 7743 7744The full source code for the ASL test suite used to validate the iASL 7745compiler and the ACPICA core subsystem is being released with the ACPICA 7746source for the first time. The source is contained in a separate package 7747and 7748consists of over 1100 files that exercise all ASL/AML operators. The 7749package 7750should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 7751Fiodor 7752Suietov) 7753 7754Completed a new design and implementation for support of the ACPI Global 7755Lock. On the OS side, the global lock is now treated as a standard AML 7756mutex. Previously, multiple OS threads could "acquire" the global lock 7757simultaneously. However, this could cause the BIOS to be starved out of 7758the 7759lock - especially in cases such as the Embedded Controller driver where 7760there is a tight coupling between the OS and the BIOS. 7761 7762Implemented an optimization for the ACPI Global Lock interrupt mechanism. 7763The Global Lock interrupt handler no longer queues the execution of a 7764separate thread to signal the global lock semaphore. Instead, the 7765semaphore 7766is signaled directly from the interrupt handler. 7767 7768Implemented support within the AML interpreter for package objects that 7769contain a larger AML length (package list length) than the package 7770element 7771count. In this case, the length of the package is truncated to match the 7772package element count. Some BIOS code apparently modifies the package 7773length 7774on the fly, and this change supports this behavior. Provides 7775compatibility 7776with the MS AML interpreter. (With assistance from Fiodor Suietov) 7777 7778Implemented a temporary fix for the BankValue parameter of a Bank Field 7779to 7780support all constant values, now including the Zero and One opcodes. 7781Evaluation of this parameter must eventually be converted to a full 7782TermArg 7783evaluation. A not-implemented error is now returned (temporarily) for 7784non- 7785constant values for this parameter. 7786 7787Fixed problem reports (Fiodor Suietov) integrated: 7788- Fix for premature object deletion after CopyObject on Operation Region 7789(BZ 7790350) 7791 7792Example Code and Data Size: These are the sizes for the OS-independent 7793acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7794debug version of the code includes the debug output trace mechanism and 7795has 7796a much larger code and data size. 7797 7798 Previous Release: 7799 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 7800 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 7801 Current Release: 7802 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7803 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7804 7805 78062) iASL Compiler/Disassembler and Tools: 7807 7808No changes for this release. 7809 7810---------------------------------------- 781107 July 2006. Summary of changes for version 20060707: 7812 78131) ACPI CA Core Subsystem: 7814 7815Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 7816that do not allow the initialization of address pointers within packed 7817structures - even though the hardware itself may support misaligned 7818transfers. Some of the debug data structures are packed by default to 7819minimize size. 7820 7821Added an error message for the case where AcpiOsGetThreadId() returns 7822zero. 7823A non-zero value is required by the core ACPICA code to ensure the proper 7824operation of AML mutexes and recursive control methods. 7825 7826The DSDT is now the only ACPI table that determines whether the AML 7827interpreter is in 32-bit or 64-bit mode. Not really a functional change, 7828but 7829the hooks for per-table 32/64 switching have been removed from the code. 7830A 7831clarification to the ACPI specification is forthcoming in ACPI 3.0B. 7832 7833Fixed a possible leak of an OwnerID in the error path of 7834AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 7835deletion to a single place in AcpiTbUninstallTable to correct possible 7836leaks 7837when using the AcpiTbDeleteTablesByType interface (with assistance from 7838Lance Ortiz.) 7839 7840Fixed a problem with Serialized control methods where the semaphore 7841associated with the method could be over-signaled after multiple method 7842invocations. 7843 7844Fixed two issues with the locking of the internal namespace data 7845structure. 7846Both the Unload() operator and AcpiUnloadTable interface now lock the 7847namespace during the namespace deletion associated with the table unload 7848(with assistance from Linn Crosetto.) 7849 7850Fixed problem reports (Valery Podrezov) integrated: 7851- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 7852 7853Fixed problem reports (Fiodor Suietov) integrated: 7854- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 7855- On Address Space handler deletion, needless deactivation call (BZ 374) 7856- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 7857375) 7858- Possible memory leak, Notify sub-objects of Processor, Power, 7859ThermalZone 7860(BZ 376) 7861- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 7862- Minimum Length of RSDT should be validated (BZ 379) 7863- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 7864Handler (BZ (380) 7865- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 7866loaded 7867(BZ 381) 7868 7869Example Code and Data Size: These are the sizes for the OS-independent 7870acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7871debug version of the code includes the debug output trace mechanism and 7872has 7873a much larger code and data size. 7874 7875 Previous Release: 7876 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7877 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7878 Current Release: 7879 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7880 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7881 7882 78832) iASL Compiler/Disassembler and Tools: 7884 7885Fixed problem reports: 7886Compiler segfault when ASL contains a long (>1024) String declaration (BZ 7887436) 7888 7889---------------------------------------- 789023 June 2006. Summary of changes for version 20060623: 7891 78921) ACPI CA Core Subsystem: 7893 7894Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 7895allows the type to be customized to the host OS for improved efficiency 7896(since a spinlock is usually a very small object.) 7897 7898Implemented support for "ignored" bits in the ACPI registers. According 7899to 7900the ACPI specification, these bits should be preserved when writing the 7901registers via a read/modify/write cycle. There are 3 bits preserved in 7902this 7903manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 7904 7905Implemented the initial deployment of new OSL mutex interfaces. Since 7906some 7907host operating systems have separate mutex and semaphore objects, this 7908feature was requested. The base code now uses mutexes (and the new mutex 7909interfaces) wherever a binary semaphore was used previously. However, for 7910the current release, the mutex interfaces are defined as macros to map 7911them 7912to the existing semaphore interfaces. Therefore, no OSL changes are 7913required 7914at this time. (See acpiosxf.h) 7915 7916Fixed several problems with the support for the control method SyncLevel 7917parameter. The SyncLevel now works according to the ACPI specification 7918and 7919in concert with the Mutex SyncLevel parameter, since the current 7920SyncLevel 7921is a property of the executing thread. Mutual exclusion for control 7922methods 7923is now implemented with a mutex instead of a semaphore. 7924 7925Fixed three instances of the use of the C shift operator in the bitfield 7926support code (exfldio.c) to avoid the use of a shift value larger than 7927the 7928target data width. The behavior of C compilers is undefined in this case 7929and 7930can cause unpredictable results, and therefore the case must be detected 7931and 7932avoided. (Fiodor Suietov) 7933 7934Added an info message whenever an SSDT or OEM table is loaded dynamically 7935via the Load() or LoadTable() ASL operators. This should improve 7936debugging 7937capability since it will show exactly what tables have been loaded 7938(beyond 7939the tables present in the RSDT/XSDT.) 7940 7941Example Code and Data Size: These are the sizes for the OS-independent 7942acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7943debug version of the code includes the debug output trace mechanism and 7944has 7945a much larger code and data size. 7946 7947 Previous Release: 7948 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7949 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7950 Current Release: 7951 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7952 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7953 7954 79552) iASL Compiler/Disassembler and Tools: 7956 7957No changes for this release. 7958 7959---------------------------------------- 796008 June 2006. Summary of changes for version 20060608: 7961 79621) ACPI CA Core Subsystem: 7963 7964Converted the locking mutex used for the ACPI hardware to a spinlock. 7965This 7966change should eliminate all problems caused by attempting to acquire a 7967semaphore at interrupt level, and it means that all ACPICA external 7968interfaces that directly access the ACPI hardware can be safely called 7969from 7970interrupt level. OSL code that implements the semaphore interfaces should 7971be 7972able to eliminate any workarounds for being called at interrupt level. 7973 7974Fixed a regression introduced in 20060526 where the ACPI device 7975initialization could be prematurely aborted with an AE_NOT_FOUND if a 7976device 7977did not have an optional _INI method. 7978 7979Fixed an IndexField issue where a write to the Data Register should be 7980limited in size to the AccessSize (width) of the IndexField itself. (BZ 7981433, 7982Fiodor Suietov) 7983 7984Fixed problem reports (Valery Podrezov) integrated: 7985- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 7986 7987Fixed problem reports (Fiodor Suietov) integrated: 7988- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 7989 7990Removed four global mutexes that were obsolete and were no longer being 7991used. 7992 7993Example Code and Data Size: These are the sizes for the OS-independent 7994acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7995debug version of the code includes the debug output trace mechanism and 7996has 7997a much larger code and data size. 7998 7999 Previous Release: 8000 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8001 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8002 Current Release: 8003 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8004 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8005 8006 80072) iASL Compiler/Disassembler and Tools: 8008 8009Fixed a fault when using -g option (get tables from registry) on Windows 8010machines. 8011 8012Fixed problem reports integrated: 8013- Generate error if CreateField NumBits parameter is zero. (BZ 405) 8014- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 8015Suietov) 8016- Global table revision override (-r) is ignored (BZ 413) 8017 8018---------------------------------------- 801926 May 2006. Summary of changes for version 20060526: 8020 80211) ACPI CA Core Subsystem: 8022 8023Restructured, flattened, and simplified the internal interfaces for 8024namespace object evaluation - resulting in smaller code, less CPU stack 8025use, 8026and fewer interfaces. (With assistance from Mikhail Kouzmich) 8027 8028Fixed a problem with the CopyObject operator where the first parameter 8029was 8030not typed correctly for the parser, interpreter, compiler, and 8031disassembler. 8032Caused various errors and unexpected behavior. 8033 8034Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 8035produced incorrect results with some C compilers. Since the behavior of C 8036compilers when the shift value is larger than the datatype width is 8037apparently not well defined, the interpreter now detects this condition 8038and 8039simply returns zero as expected in all such cases. (BZ 395) 8040 8041Fixed problem reports (Valery Podrezov) integrated: 8042- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 8043- Allow interpreter to handle nested method declarations (BZ 5361) 8044 8045Fixed problem reports (Fiodor Suietov) integrated: 8046- AcpiTerminate doesn't free debug memory allocation list objects (BZ 8047355) 8048- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 8049356) 8050- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 8051- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 8052- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 8053- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 8054- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 8055- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 8056- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 8057365) 8058- Status of the Global Initialization Handler call not used (BZ 366) 8059- Incorrect object parameter to Global Initialization Handler (BZ 367) 8060 8061Example Code and Data Size: These are the sizes for the OS-independent 8062acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8063debug version of the code includes the debug output trace mechanism and 8064has 8065a much larger code and data size. 8066 8067 Previous Release: 8068 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8069 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8070 Current Release: 8071 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8072 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8073 8074 80752) iASL Compiler/Disassembler and Tools: 8076 8077Modified the parser to allow the names IO, DMA, and IRQ to be used as 8078namespace identifiers with no collision with existing resource descriptor 8079macro names. This provides compatibility with other ASL compilers and is 8080most useful for disassembly/recompilation of existing tables without 8081parse 8082errors. (With assistance from Thomas Renninger) 8083 8084Disassembler: fixed an incorrect disassembly problem with the 8085DataTableRegion and CopyObject operators. Fixed a possible fault during 8086disassembly of some Alias operators. 8087 8088---------------------------------------- 808912 May 2006. Summary of changes for version 20060512: 8090 80911) ACPI CA Core Subsystem: 8092 8093Replaced the AcpiOsQueueForExecution interface with a new interface named 8094AcpiOsExecute. The major difference is that the new interface does not 8095have 8096a Priority parameter, this appeared to be useless and has been replaced 8097by 8098a 8099Type parameter. The Type tells the host what type of execution is being 8100requested, such as global lock handler, notify handler, GPE handler, etc. 8101This allows the host to queue and execute the request as appropriate for 8102the 8103request type, possibly using different work queues and different 8104priorities 8105for the various request types. This enables fixes for multithreading 8106deadlock problems such as BZ #5534, and will require changes to all 8107existing 8108OS interface layers. (Alexey Starikovskiy and Bob Moore) 8109 8110Fixed a possible memory leak associated with the support for the so- 8111called 8112"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 8113Suietov) 8114 8115Fixed a problem with the Load() operator where a table load from an 8116operation region could overwrite an internal table buffer by up to 7 8117bytes 8118and cause alignment faults on IPF systems. (With assistance from Luming 8119Yu) 8120 8121Example Code and Data Size: These are the sizes for the OS-independent 8122acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8123debug version of the code includes the debug output trace mechanism and 8124has 8125a much larger code and data size. 8126 8127 Previous Release: 8128 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8129 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8130 Current Release: 8131 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8132 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8133 8134 8135 81362) iASL Compiler/Disassembler and Tools: 8137 8138Disassembler: Implemented support to cross reference the internal 8139namespace 8140and automatically generate ASL External() statements for symbols not 8141defined 8142within the current table being disassembled. This will simplify the 8143disassembly and recompilation of interdependent tables such as SSDTs 8144since 8145these statements will no longer have to be added manually. 8146 8147Disassembler: Implemented experimental support to automatically detect 8148invocations of external control methods and generate appropriate 8149External() 8150statements. This is problematic because the AML cannot be correctly 8151parsed 8152until the number of arguments for each control method is known. 8153Currently, 8154standalone method invocations and invocations as the source operand of a 8155Store() statement are supported. 8156 8157Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 8158LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 8159LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 8160more readable and likely closer to the original ASL source. 8161 8162---------------------------------------- 816321 April 2006. Summary of changes for version 20060421: 8164 81651) ACPI CA Core Subsystem: 8166 8167Removed a device initialization optimization introduced in 20051216 where 8168the _STA method was not run unless an _INI was also present for the same 8169device. This optimization could cause problems because it could allow 8170_INI 8171methods to be run within a not-present device subtree. (If a not-present 8172device had no _INI, _STA would not be run, the not-present status would 8173not 8174be discovered, and the children of the device would be incorrectly 8175traversed.) 8176 8177Implemented a new _STA optimization where namespace subtrees that do not 8178contain _INI are identified and ignored during device initialization. 8179Selectively running _STA can significantly improve boot time on large 8180machines (with assistance from Len Brown.) 8181 8182Implemented support for the device initialization case where the returned 8183_STA flags indicate a device not-present but functioning. In this case, 8184_INI 8185is not run, but the device children are examined for presence, as per the 8186ACPI specification. 8187 8188Implemented an additional change to the IndexField support in order to 8189conform to MS behavior. The value written to the Index Register is not 8190simply a byte offset, it is a byte offset in units of the access width of 8191the parent Index Field. (Fiodor Suietov) 8192 8193Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 8194interface is called during the creation of all AML operation regions, and 8195allows the host OS to exert control over what addresses it will allow the 8196AML code to access. Operation Regions whose addresses are disallowed will 8197cause a runtime exception when they are actually accessed (will not 8198affect 8199or abort table loading.) See oswinxf or osunixxf for an example 8200implementation. 8201 8202Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 8203interface allows the host OS to match the various "optional" 8204interface/behavior strings for the _OSI predefined control method as 8205appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 8206for an example implementation. 8207 8208Restructured and corrected various problems in the exception handling 8209code 8210paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 8211(with assistance from Takayoshi Kochi.) 8212 8213Modified the Linux source converter to ignore quoted string literals 8214while 8215converting identifiers from mixed to lower case. This will correct 8216problems 8217with the disassembler and other areas where such strings must not be 8218modified. 8219 8220The ACPI_FUNCTION_* macros no longer require quotes around the function 8221name. This allows the Linux source converter to convert the names, now 8222that 8223the converter ignores quoted strings. 8224 8225Example Code and Data Size: These are the sizes for the OS-independent 8226acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8227debug version of the code includes the debug output trace mechanism and 8228has 8229a much larger code and data size. 8230 8231 Previous Release: 8232 8233 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8234 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8235 Current Release: 8236 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8237 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8238 8239 82402) iASL Compiler/Disassembler and Tools: 8241 8242Implemented 3 new warnings for iASL, and implemented multiple warning 8243levels 8244(w2 flag). 8245 82461) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 8247not 8248WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 8249check for the possible timeout, a warning is issued. 8250 82512) Useless operators: If an ASL operator does not specify an optional 8252target 8253operand and it also does not use the function return value from the 8254operator, a warning is issued since the operator effectively does 8255nothing. 8256 82573) Unreferenced objects: If a namespace object is created, but never 8258referenced, a warning is issued. This is a warning level 2 since there 8259are 8260cases where this is ok, such as when a secondary table is loaded that 8261uses 8262the unreferenced objects. Even so, care is taken to only flag objects 8263that 8264don't look like they will ever be used. For example, the reserved methods 8265(starting with an underscore) are usually not referenced because it is 8266expected that the OS will invoke them. 8267 8268---------------------------------------- 826931 March 2006. Summary of changes for version 20060331: 8270 82711) ACPI CA Core Subsystem: 8272 8273Implemented header file support for the following additional ACPI tables: 8274ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 8275support, 8276all current and known ACPI tables are now defined in the ACPICA headers 8277and 8278are available for use by device drivers and other software. 8279 8280Implemented support to allow tables that contain ACPI names with invalid 8281characters to be loaded. Previously, this would cause the table load to 8282fail, but since there are several known cases of such tables on existing 8283machines, this change was made to enable ACPI support for them. Also, 8284this 8285matches the behavior of the Microsoft ACPI implementation. 8286 8287Fixed a couple regressions introduced during the memory optimization in 8288the 828920060317 release. The namespace node definition required additional 8290reorganization and an internal datatype that had been changed to 8-bit 8291was 8292restored to 32-bit. (Valery Podrezov) 8293 8294Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 8295could be passed through to AcpiOsReleaseObject which is unexpected. Such 8296null pointers are now trapped and ignored, matching the behavior of the 8297previous implementation before the deployment of AcpiOsReleaseObject. 8298(Valery Podrezov, Fiodor Suietov) 8299 8300Fixed a memory mapping leak during the deletion of a SystemMemory 8301operation 8302region where a cached memory mapping was not deleted. This became a 8303noticeable problem for operation regions that are defined within 8304frequently 8305used control methods. (Dana Meyers) 8306 8307Reorganized the ACPI table header files into two main files: one for the 8308ACPI tables consumed by the ACPICA core, and another for the 8309miscellaneous 8310ACPI tables that are consumed by the drivers and other software. The 8311various 8312FADT definitions were merged into one common section and three different 8313tables (ACPI 1.0, 1.0+, and 2.0) 8314 8315Example Code and Data Size: These are the sizes for the OS-independent 8316acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8317debug version of the code includes the debug output trace mechanism and 8318has 8319a much larger code and data size. 8320 8321 Previous Release: 8322 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8323 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8324 Current Release: 8325 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8326 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8327 8328 83292) iASL Compiler/Disassembler and Tools: 8330 8331Disassembler: Implemented support to decode and format all non-AML ACPI 8332tables (tables other than DSDTs and SSDTs.) This includes the new tables 8333added to the ACPICA headers, therefore all current and known ACPI tables 8334are 8335supported. 8336 8337Disassembler: The change to allow ACPI names with invalid characters also 8338enables the disassembly of such tables. Invalid characters within names 8339are 8340changed to '*' to make the name printable; the iASL compiler will still 8341generate an error for such names, however, since this is an invalid ACPI 8342character. 8343 8344Implemented an option for AcpiXtract (-a) to extract all tables found in 8345the 8346input file. The default invocation extracts only the DSDTs and SSDTs. 8347 8348Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 8349makefile for the AcpiXtract utility. 8350 8351---------------------------------------- 835217 March 2006. Summary of changes for version 20060317: 8353 83541) ACPI CA Core Subsystem: 8355 8356Implemented the use of a cache object for all internal namespace nodes. 8357Since there are about 1000 static nodes in a typical system, this will 8358decrease memory use for cache implementations that minimize per- 8359allocation 8360overhead (such as a slab allocator.) 8361 8362Removed the reference count mechanism for internal namespace nodes, since 8363it 8364was deemed unnecessary. This reduces the size of each namespace node by 8365about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 8366case, 8367and 32 bytes for the 64-bit case. 8368 8369Optimized several internal data structures to reduce object size on 64- 8370bit 8371platforms by packing data within the 64-bit alignment. This includes the 8372frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 8373instances corresponding to the namespace objects. 8374 8375Added two new strings for the predefined _OSI method: "Windows 2001.1 8376SP1" 8377and "Windows 2006". 8378 8379Split the allocation tracking mechanism out to a separate file, from 8380utalloc.c to uttrack.c. This mechanism appears to be only useful for 8381application-level code. Kernels may wish to not include uttrack.c in 8382distributions. 8383 8384Removed all remnants of the obsolete ACPI_REPORT_* macros and the 8385associated 8386code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 8387macros.) 8388 8389Code and Data Size: These are the sizes for the acpica.lib produced by 8390the 8391Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8392ACPI 8393driver or OSPM code. The debug version of the code includes the debug 8394output 8395trace mechanism and has a much larger code and data size. Note that these 8396values will vary depending on the efficiency of the compiler and the 8397compiler options used during generation. 8398 8399 Previous Release: 8400 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8401 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8402 Current Release: 8403 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8404 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8405 8406 84072) iASL Compiler/Disassembler and Tools: 8408 8409Implemented an ANSI C version of the acpixtract utility. This version 8410will 8411automatically extract the DSDT and all SSDTs from the input acpidump text 8412file and dump the binary output to separate files. It can also display a 8413summary of the input file including the headers for each table found and 8414will extract any single ACPI table, with any signature. (See 8415source/tools/acpixtract) 8416 8417---------------------------------------- 841810 March 2006. Summary of changes for version 20060310: 8419 84201) ACPI CA Core Subsystem: 8421 8422Tagged all external interfaces to the subsystem with the new 8423ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 8424assist 8425kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 8426macro. The default definition is NULL. 8427 8428Added the ACPI_THREAD_ID type for the return value from 8429AcpiOsGetThreadId. 8430This allows the host to define this as necessary to simplify kernel 8431integration. The default definition is ACPI_NATIVE_UINT. 8432 8433Fixed two interpreter problems related to error processing, the deletion 8434of 8435objects, and placing invalid pointers onto the internal operator result 8436stack. BZ 6028, 6151 (Valery Podrezov) 8437 8438Increased the reference count threshold where a warning is emitted for 8439large 8440reference counts in order to eliminate unnecessary warnings on systems 8441with 8442large namespaces (especially 64-bit.) Increased the value from 0x400 to 84430x800. 8444 8445Due to universal disagreement as to the meaning of the 'c' in the 8446calloc() 8447function, the ACPI_MEM_CALLOCATE macro has been renamed to 8448ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 8449ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 8450ACPI_FREE. 8451 8452Code and Data Size: These are the sizes for the acpica.lib produced by 8453the 8454Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8455ACPI 8456driver or OSPM code. The debug version of the code includes the debug 8457output 8458trace mechanism and has a much larger code and data size. Note that these 8459values will vary depending on the efficiency of the compiler and the 8460compiler options used during generation. 8461 8462 Previous Release: 8463 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8464 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8465 Current Release: 8466 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8467 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8468 8469 84702) iASL Compiler/Disassembler: 8471 8472Disassembler: implemented support for symbolic resource descriptor 8473references. If a CreateXxxxField operator references a fixed offset 8474within 8475a 8476resource descriptor, a name is assigned to the descriptor and the offset 8477is 8478translated to the appropriate resource tag and pathname. The addition of 8479this support brings the disassembled code very close to the original ASL 8480source code and helps eliminate run-time errors when the disassembled 8481code 8482is modified (and recompiled) in such a way as to invalidate the original 8483fixed offsets. 8484 8485Implemented support for a Descriptor Name as the last parameter to the 8486ASL 8487Register() macro. This parameter was inadvertently left out of the ACPI 8488specification, and will be added for ACPI 3.0b. 8489 8490Fixed a problem where the use of the "_OSI" string (versus the full path 8491"\_OSI") caused an internal compiler error. ("No back ptr to op") 8492 8493Fixed a problem with the error message that occurs when an invalid string 8494is 8495used for a _HID object (such as one with an embedded asterisk: 8496"*PNP010A".) 8497The correct message is now displayed. 8498 8499---------------------------------------- 850017 February 2006. Summary of changes for version 20060217: 8501 85021) ACPI CA Core Subsystem: 8503 8504Implemented a change to the IndexField support to match the behavior of 8505the 8506Microsoft AML interpreter. The value written to the Index register is now 8507a 8508byte offset, no longer an index based upon the width of the Data 8509register. 8510This should fix IndexField problems seen on some machines where the Data 8511register is not exactly one byte wide. The ACPI specification will be 8512clarified on this point. 8513 8514Fixed a problem where several resource descriptor types could overrun the 8515internal descriptor buffer due to size miscalculation: VendorShort, 8516VendorLong, and Interrupt. This was noticed on IA64 machines, but could 8517affect all platforms. 8518 8519Fixed a problem where individual resource descriptors were misaligned 8520within 8521the internal buffer, causing alignment faults on IA64 platforms. 8522 8523Code and Data Size: These are the sizes for the acpica.lib produced by 8524the 8525Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8526ACPI 8527driver or OSPM code. The debug version of the code includes the debug 8528output 8529trace mechanism and has a much larger code and data size. Note that these 8530values will vary depending on the efficiency of the compiler and the 8531compiler options used during generation. 8532 8533 Previous Release: 8534 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8535 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8536 Current Release: 8537 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8538 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8539 8540 85412) iASL Compiler/Disassembler: 8542 8543Implemented support for new reserved names: _WDG and _WED are Microsoft 8544extensions for Windows Instrumentation Management, _TDL is a new ACPI- 8545defined method (Throttling Depth Limit.) 8546 8547Fixed a problem where a zero-length VendorShort or VendorLong resource 8548descriptor was incorrectly emitted as a descriptor of length one. 8549 8550---------------------------------------- 855110 February 2006. Summary of changes for version 20060210: 8552 85531) ACPI CA Core Subsystem: 8554 8555Removed a couple of extraneous ACPI_ERROR messages that appeared during 8556normal execution. These became apparent after the conversion from 8557ACPI_DEBUG_PRINT. 8558 8559Fixed a problem where the CreateField operator could hang if the BitIndex 8560or 8561NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 8562 8563Fixed a problem where a DeRefOf operation on a buffer object incorrectly 8564failed with an exception. This also fixes a couple of related RefOf and 8565DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 8566 8567Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 8568of 8569AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 8570BZ 85715480) 8572 8573Implemented a memory cleanup at the end of the execution of each 8574iteration 8575of an AML While() loop, preventing the accumulation of outstanding 8576objects. 8577(Valery Podrezov, BZ 5427) 8578 8579Eliminated a chunk of duplicate code in the object resolution code. 8580(Valery 8581Podrezov, BZ 5336) 8582 8583Fixed several warnings during the 64-bit code generation. 8584 8585The AcpiSrc source code conversion tool now inserts one line of 8586whitespace 8587after an if() statement that is followed immediately by a comment, 8588improving 8589readability of the Linux code. 8590 8591Code and Data Size: The current and previous library sizes for the core 8592subsystem are shown below. These are the code and data sizes for the 8593acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8594These 8595values do not include any ACPI driver or OSPM code. The debug version of 8596the 8597code includes the debug output trace mechanism and has a much larger code 8598and data size. Note that these values will vary depending on the 8599efficiency 8600of the compiler and the compiler options used during generation. 8601 8602 Previous Release: 8603 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8604 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8605 Current Release: 8606 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8607 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8608 8609 86102) iASL Compiler/Disassembler: 8611 8612Fixed a problem with the disassembly of a BankField operator with a 8613complex 8614expression for the BankValue parameter. 8615 8616---------------------------------------- 861727 January 2006. Summary of changes for version 20060127: 8618 86191) ACPI CA Core Subsystem: 8620 8621Implemented support in the Resource Manager to allow unresolved 8622namestring 8623references within resource package objects for the _PRT method. This 8624support 8625is in addition to the previously implemented unresolved reference support 8626within the AML parser. If the interpreter slack mode is enabled, these 8627unresolved references will be passed through to the caller as a NULL 8628package 8629entry. 8630 8631Implemented and deployed new macros and functions for error and warning 8632messages across the subsystem. These macros are simpler and generate less 8633code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 8634ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 8635macros remain defined to allow ACPI drivers time to migrate to the new 8636macros. 8637 8638Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 8639the 8640Acquire/Release Lock OSL interfaces. 8641 8642Fixed a problem where Alias ASL operators are sometimes not correctly 8643resolved, in both the interpreter and the iASL compiler. 8644 8645Fixed several problems with the implementation of the 8646ConcatenateResTemplate 8647ASL operator. As per the ACPI specification, zero length buffers are now 8648treated as a single EndTag. One-length buffers always cause a fatal 8649exception. Non-zero length buffers that do not end with a full 2-byte 8650EndTag 8651cause a fatal exception. 8652 8653Fixed a possible structure overwrite in the AcpiGetObjectInfo external 8654interface. (With assistance from Thomas Renninger) 8655 8656Code and Data Size: The current and previous library sizes for the core 8657subsystem are shown below. These are the code and data sizes for the 8658acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8659These 8660values do not include any ACPI driver or OSPM code. The debug version of 8661the 8662code includes the debug output trace mechanism and has a much larger code 8663and data size. Note that these values will vary depending on the 8664efficiency 8665of the compiler and the compiler options used during generation. 8666 8667 Previous Release: 8668 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8669 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8670 Current Release: 8671 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8672 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8673 8674 86752) iASL Compiler/Disassembler: 8676 8677Fixed an internal error that was generated for any forward references to 8678ASL 8679Alias objects. 8680 8681---------------------------------------- 868213 January 2006. Summary of changes for version 20060113: 8683 86841) ACPI CA Core Subsystem: 8685 8686Added 2006 copyright to all module headers and signons. This affects 8687virtually every file in the ACPICA core subsystem, iASL compiler, and the 8688utilities. 8689 8690Enhanced the ACPICA error reporting in order to simplify user migration 8691to 8692the non-debug version of ACPICA. Replaced all instances of the 8693ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 8694debug 8695levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 8696respectively. This preserves all error and warning messages in the non- 8697debug 8698version of the ACPICA code (this has been referred to as the "debug lite" 8699option.) Over 200 cases were converted to create a total of over 380 8700error/warning messages across the ACPICA code. This increases the code 8701and 8702data size of the default non-debug version of the code somewhat (about 870313K), 8704but all error/warning reporting may be disabled if desired (and code 8705eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 8706configuration option. The size of the debug version of ACPICA remains 8707about 8708the same. 8709 8710Fixed a memory leak within the AML Debugger "Set" command. One object was 8711not properly deleted for every successful invocation of the command. 8712 8713Code and Data Size: The current and previous library sizes for the core 8714subsystem are shown below. These are the code and data sizes for the 8715acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8716These 8717values do not include any ACPI driver or OSPM code. The debug version of 8718the 8719code includes the debug output trace mechanism and has a much larger code 8720and data size. Note that these values will vary depending on the 8721efficiency 8722of the compiler and the compiler options used during generation. 8723 8724 Previous Release: 8725 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8726 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8727 Current Release: 8728 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8729 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8730 8731 87322) iASL Compiler/Disassembler: 8733 8734The compiler now officially supports the ACPI 3.0a specification that was 8735released on December 30, 2005. (Specification is available at 8736www.acpi.info) 8737 8738---------------------------------------- 873916 December 2005. Summary of changes for version 20051216: 8740 87411) ACPI CA Core Subsystem: 8742 8743Implemented optional support to allow unresolved names within ASL Package 8744objects. A null object is inserted in the package when a named reference 8745cannot be located in the current namespace. Enabled via the interpreter 8746slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 8747machines 8748that contain such code. 8749 8750Implemented an optimization to the initialization sequence that can 8751improve 8752boot time. During ACPI device initialization, the _STA method is now run 8753if 8754and only if the _INI method exists. The _STA method is used to determine 8755if 8756the device is present; An _INI can only be run if _STA returns present, 8757but 8758it is a waste of time to run the _STA method if the _INI does not exist. 8759(Prototype and assistance from Dong Wei) 8760 8761Implemented use of the C99 uintptr_t for the pointer casting macros if it 8762is 8763available in the current compiler. Otherwise, the default (void *) cast 8764is 8765used as before. 8766 8767Fixed some possible memory leaks found within the execution path of the 8768Break, Continue, If, and CreateField operators. (Valery Podrezov) 8769 8770Fixed a problem introduced in the 20051202 release where an exception is 8771generated during method execution if a control method attempts to declare 8772another method. 8773 8774Moved resource descriptor string constants that are used by both the AML 8775disassembler and AML debugger to the common utilities directory so that 8776these components are independent. 8777 8778Implemented support in the AcpiExec utility (-e switch) to globally 8779ignore 8780exceptions during control method execution (method is not aborted.) 8781 8782Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 8783generation. 8784 8785Code and Data Size: The current and previous library sizes for the core 8786subsystem are shown below. These are the code and data sizes for the 8787acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8788These 8789values do not include any ACPI driver or OSPM code. The debug version of 8790the 8791code includes the debug output trace mechanism and has a much larger code 8792and data size. Note that these values will vary depending on the 8793efficiency 8794of the compiler and the compiler options used during generation. 8795 8796 Previous Release: 8797 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8798 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8799 Current Release: 8800 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8801 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8802 8803 88042) iASL Compiler/Disassembler: 8805 8806Fixed a problem where a CPU stack overflow fault could occur if a 8807recursive 8808method call was made from within a Return statement. 8809 8810---------------------------------------- 881102 December 2005. Summary of changes for version 20051202: 8812 88131) ACPI CA Core Subsystem: 8814 8815Modified the parsing of control methods to no longer create namespace 8816objects during the first pass of the parse. Objects are now created only 8817during the execute phase, at the moment the namespace creation operator 8818is 8819encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 8820This 8821should eliminate ALREADY_EXISTS exceptions seen on some machines where 8822reentrant control methods are protected by an AML mutex. The mutex will 8823now 8824correctly block multiple threads from attempting to create the same 8825object 8826more than once. 8827 8828Increased the number of available Owner Ids for namespace object tracking 8829from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 8830on 8831some machines with a large number of ACPI tables (either static or 8832dynamic). 8833 8834Fixed a problem with the AcpiExec utility where a fault could occur when 8835the 8836-b switch (batch mode) is used. 8837 8838Enhanced the namespace dump routine to output the owner ID for each 8839namespace object. 8840 8841Code and Data Size: The current and previous library sizes for the core 8842subsystem are shown below. These are the code and data sizes for the 8843acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8844These 8845values do not include any ACPI driver or OSPM code. The debug version of 8846the 8847code includes the debug output trace mechanism and has a much larger code 8848and data size. Note that these values will vary depending on the 8849efficiency 8850of the compiler and the compiler options used during generation. 8851 8852 Previous Release: 8853 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8854 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8855 Current Release: 8856 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8857 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8858 8859 88602) iASL Compiler/Disassembler: 8861 8862Fixed a parse error during compilation of certain Switch/Case constructs. 8863To 8864simplify the parse, the grammar now allows for multiple Default 8865statements 8866and this error is now detected and flagged during the analysis phase. 8867 8868Disassembler: The disassembly now includes the contents of the original 8869table header within a comment at the start of the file. This includes the 8870name and version of the original ASL compiler. 8871 8872---------------------------------------- 887317 November 2005. Summary of changes for version 20051117: 8874 88751) ACPI CA Core Subsystem: 8876 8877Fixed a problem in the AML parser where the method thread count could be 8878decremented below zero if any errors occurred during the method parse 8879phase. 8880This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 8881machines. 8882This also fixed a related regression with the mechanism that detects and 8883corrects methods that cannot properly handle reentrancy (related to the 8884deployment of the new OwnerId mechanism.) 8885 8886Eliminated the pre-parsing of control methods (to detect errors) during 8887table load. Related to the problem above, this was causing unwind issues 8888if 8889any errors occurred during the parse, and it seemed to be overkill. A 8890table 8891load should not be aborted if there are problems with any single control 8892method, thus rendering this feature rather pointless. 8893 8894Fixed a problem with the new table-driven resource manager where an 8895internal 8896buffer overflow could occur for small resource templates. 8897 8898Implemented a new external interface, AcpiGetVendorResource. This 8899interface 8900will find and return a vendor-defined resource descriptor within a _CRS 8901or 8902_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 8903Helgaas. 8904 8905Removed the length limit (200) on string objects as per the upcoming ACPI 89063.0A specification. This affects the following areas of the interpreter: 89071) 8908any implicit conversion of a Buffer to a String, 2) a String object 8909result 8910of the ASL Concatentate operator, 3) the String object result of the ASL 8911ToString operator. 8912 8913Fixed a problem in the Windows OS interface layer (OSL) where a 8914WAIT_FOREVER 8915on a semaphore object would incorrectly timeout. This allows the 8916multithreading features of the AcpiExec utility to work properly under 8917Windows. 8918 8919Updated the Linux makefiles for the iASL compiler and AcpiExec to include 8920the recently added file named "utresrc.c". 8921 8922Code and Data Size: The current and previous library sizes for the core 8923subsystem are shown below. These are the code and data sizes for the 8924acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8925These 8926values do not include any ACPI driver or OSPM code. The debug version of 8927the 8928code includes the debug output trace mechanism and has a much larger code 8929and data size. Note that these values will vary depending on the 8930efficiency 8931of the compiler and the compiler options used during generation. 8932 8933 Previous Release: 8934 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8935 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8936 Current Release: 8937 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8938 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8939 8940 89412) iASL Compiler/Disassembler: 8942 8943Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 8944specification. For the iASL compiler, this means that string literals 8945within 8946the source ASL can be of any length. 8947 8948Enhanced the listing output to dump the AML code for resource descriptors 8949immediately after the ASL code for each descriptor, instead of in a block 8950at 8951the end of the entire resource template. 8952 8953Enhanced the compiler debug output to dump the entire original parse tree 8954constructed during the parse phase, before any transforms are applied to 8955the 8956tree. The transformed tree is dumped also. 8957 8958---------------------------------------- 895902 November 2005. Summary of changes for version 20051102: 8960 89611) ACPI CA Core Subsystem: 8962 8963Modified the subsystem initialization sequence to improve GPE support. 8964The 8965GPE initialization has been split into two parts in order to defer 8966execution 8967of the _PRW methods (Power Resources for Wake) until after the hardware 8968is 8969fully initialized and the SCI handler is installed. This allows the _PRW 8970methods to access fields protected by the Global Lock. This will fix 8971systems 8972where a NO_GLOBAL_LOCK exception has been seen during initialization. 8973 8974Converted the ACPI internal object disassemble and display code within 8975the 8976AML debugger to fully table-driven operation, reducing code size and 8977increasing maintainability. 8978 8979Fixed a regression with the ConcatenateResTemplate() ASL operator 8980introduced 8981in the 20051021 release. 8982 8983Implemented support for "local" internal ACPI object types within the 8984debugger "Object" command and the AcpiWalkNamespace external interfaces. 8985These local types include RegionFields, BankFields, IndexFields, Alias, 8986and 8987reference objects. 8988 8989Moved common AML resource handling code into a new file, "utresrc.c". 8990This 8991code is shared by both the Resource Manager and the AML Debugger. 8992 8993Code and Data Size: The current and previous library sizes for the core 8994subsystem are shown below. These are the code and data sizes for the 8995acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8996These 8997values do not include any ACPI driver or OSPM code. The debug version of 8998the 8999code includes the debug output trace mechanism and has a much larger code 9000and data size. Note that these values will vary depending on the 9001efficiency 9002of the compiler and the compiler options used during generation. 9003 9004 Previous Release: 9005 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9006 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9007 Current Release: 9008 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9009 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9010 9011 90122) iASL Compiler/Disassembler: 9013 9014Fixed a problem with very large initializer lists (more than 4000 9015elements) 9016for both Buffer and Package objects where the parse stack could overflow. 9017 9018Enhanced the pre-compile source code scan for non-ASCII characters to 9019ignore 9020characters within comment fields. The scan is now always performed and is 9021no 9022longer optional, detecting invalid characters within a source file 9023immediately rather than during the parse phase or later. 9024 9025Enhanced the ASL grammar definition to force early reductions on all 9026list- 9027style grammar elements so that the overall parse stack usage is greatly 9028reduced. This should improve performance and reduce the possibility of 9029parse 9030stack overflow. 9031 9032Eliminated all reduce/reduce conflicts in the iASL parser generation. 9033Also, 9034with the addition of a %expected statement, the compiler generates from 9035source with no warnings. 9036 9037Fixed a possible segment fault in the disassembler if the input filename 9038does not contain a "dot" extension (Thomas Renninger). 9039 9040---------------------------------------- 904121 October 2005. Summary of changes for version 20051021: 9042 90431) ACPI CA Core Subsystem: 9044 9045Implemented support for the EM64T and other x86-64 processors. This 9046essentially entails recognizing that these processors support non-aligned 9047memory transfers. Previously, all 64-bit processors were assumed to lack 9048hardware support for non-aligned transfers. 9049 9050Completed conversion of the Resource Manager to nearly full table-driven 9051operation. Specifically, the resource conversion code (convert AML to 9052internal format and the reverse) and the debug code to dump internal 9053resource descriptors are fully table-driven, reducing code and data size 9054and 9055improving maintainability. 9056 9057The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 9058word 9059on 64-bit processors instead of a fixed 32-bit word. (With assistance 9060from 9061Alexey Starikovskiy) 9062 9063Implemented support within the resource conversion code for the Type- 9064Specific byte within the various ACPI 3.0 *WordSpace macros. 9065 9066Fixed some issues within the resource conversion code for the type- 9067specific 9068flags for both Memory and I/O address resource descriptors. For Memory, 9069implemented support for the MTP and TTP flags. For I/O, split the TRS and 9070TTP flags into two separate fields. 9071 9072Code and Data Size: The current and previous library sizes for the core 9073subsystem are shown below. These are the code and data sizes for the 9074acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9075These 9076values do not include any ACPI driver or OSPM code. The debug version of 9077the 9078code includes the debug output trace mechanism and has a much larger code 9079and data size. Note that these values will vary depending on the 9080efficiency 9081of the compiler and the compiler options used during generation. 9082 9083 Previous Release: 9084 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9085 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9086 Current Release: 9087 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9088 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9089 9090 9091 90922) iASL Compiler/Disassembler: 9093 9094Relaxed a compiler restriction that disallowed a ResourceIndex byte if 9095the 9096corresponding ResourceSource string was not also present in a resource 9097descriptor declaration. This restriction caused problems with existing 9098AML/ASL code that includes the Index byte without the string. When such 9099AML 9100was disassembled, it could not be compiled without modification. Further, 9101the modified code created a resource template with a different size than 9102the 9103original, breaking code that used fixed offsets into the resource 9104template 9105buffer. 9106 9107Removed a recent feature of the disassembler to ignore a lone 9108ResourceIndex 9109byte. This byte is now emitted if present so that the exact AML can be 9110reproduced when the disassembled code is recompiled. 9111 9112Improved comments and text alignment for the resource descriptor code 9113emitted by the disassembler. 9114 9115Implemented disassembler support for the ACPI 3.0 AccessSize field within 9116a 9117Register() resource descriptor. 9118 9119---------------------------------------- 912030 September 2005. Summary of changes for version 20050930: 9121 91221) ACPI CA Core Subsystem: 9123 9124Completed a major overhaul of the Resource Manager code - specifically, 9125optimizations in the area of the AML/internal resource conversion code. 9126The 9127code has been optimized to simplify and eliminate duplicated code, CPU 9128stack 9129use has been decreased by optimizing function parameters and local 9130variables, and naming conventions across the manager have been 9131standardized 9132for clarity and ease of maintenance (this includes function, parameter, 9133variable, and struct/typedef names.) The update may force changes in some 9134driver code, depending on how resources are handled by the host OS. 9135 9136All Resource Manager dispatch and information tables have been moved to a 9137single location for clarity and ease of maintenance. One new file was 9138created, named "rsinfo.c". 9139 9140The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 9141guarantee that the argument is not evaluated twice, making them less 9142prone 9143to macro side-effects. However, since there exists the possibility of 9144additional stack use if a particular compiler cannot optimize them (such 9145as 9146in the debug generation case), the original macros are optionally 9147available. 9148Note that some invocations of the return_VALUE macro may now cause size 9149mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 9150to 9151eliminate these. (From Randy Dunlap) 9152 9153Implemented a new mechanism to enable debug tracing for individual 9154control 9155methods. A new external interface, AcpiDebugTrace, is provided to enable 9156this mechanism. The intent is to allow the host OS to easily enable and 9157disable tracing for problematic control methods. This interface can be 9158easily exposed to a user or debugger interface if desired. See the file 9159psxface.c for details. 9160 9161AcpiUtCallocate will now return a valid pointer if a length of zero is 9162specified - a length of one is used and a warning is issued. This matches 9163the behavior of AcpiUtAllocate. 9164 9165Code and Data Size: The current and previous library sizes for the core 9166subsystem are shown below. These are the code and data sizes for the 9167acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9168These 9169values do not include any ACPI driver or OSPM code. The debug version of 9170the 9171code includes the debug output trace mechanism and has a much larger code 9172and data size. Note that these values will vary depending on the 9173efficiency 9174of the compiler and the compiler options used during generation. 9175 9176 Previous Release: 9177 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9178 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9179 Current Release: 9180 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9181 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9182 9183 91842) iASL Compiler/Disassembler: 9185 9186A remark is issued if the effective compile-time length of a package or 9187buffer is zero. Previously, this was a warning. 9188 9189---------------------------------------- 919016 September 2005. Summary of changes for version 20050916: 9191 91921) ACPI CA Core Subsystem: 9193 9194Fixed a problem within the Resource Manager where support for the Generic 9195Register descriptor was not fully implemented. This descriptor is now 9196fully 9197recognized, parsed, disassembled, and displayed. 9198 9199Completely restructured the Resource Manager code to utilize table-driven 9200dispatch and lookup, eliminating many of the large switch() statements. 9201This 9202reduces overall subsystem code size and code complexity. Affects the 9203resource parsing and construction, disassembly, and debug dump output. 9204 9205Cleaned up and restructured the debug dump output for all resource 9206descriptors. Improved readability of the output and reduced code size. 9207 9208Fixed a problem where changes to internal data structures caused the 9209optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 9210 9211Code and Data Size: The current and previous library sizes for the core 9212subsystem are shown below. These are the code and data sizes for the 9213acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9214These 9215values do not include any ACPI driver or OSPM code. The debug version of 9216the 9217code includes the debug output trace mechanism and has a much larger code 9218and data size. Note that these values will vary depending on the 9219efficiency 9220of the compiler and the compiler options used during generation. 9221 9222 Previous Release: 9223 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9224 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9225 Current Release: 9226 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9227 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9228 9229 92302) iASL Compiler/Disassembler: 9231 9232Updated the disassembler to automatically insert an EndDependentFn() 9233macro 9234into the ASL stream if this macro is missing in the original AML code, 9235simplifying compilation of the resulting ASL module. 9236 9237Fixed a problem in the disassembler where a disassembled ResourceSource 9238string (within a large resource descriptor) was not surrounded by quotes 9239and 9240not followed by a comma, causing errors when the resulting ASL module was 9241compiled. Also, escape sequences within a ResourceSource string are now 9242handled correctly (especially "\\") 9243 9244---------------------------------------- 924502 September 2005. Summary of changes for version 20050902: 9246 92471) ACPI CA Core Subsystem: 9248 9249Fixed a problem with the internal Owner ID allocation and deallocation 9250mechanisms for control method execution and recursive method invocation. 9251This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 9252messages seen on some systems. Recursive method invocation depth is 9253currently limited to 255. (Alexey Starikovskiy) 9254 9255Completely eliminated all vestiges of support for the "module-level 9256executable code" until this support is fully implemented and debugged. 9257This 9258should eliminate the NO_RETURN_VALUE exceptions seen during table load on 9259some systems that invoke this support. 9260 9261Fixed a problem within the resource manager code where the transaction 9262flags 9263for a 64-bit address descriptor were handled incorrectly in the type- 9264specific flag byte. 9265 9266Consolidated duplicate code within the address descriptor resource 9267manager 9268code, reducing overall subsystem code size. 9269 9270Fixed a fault when using the AML debugger "disassemble" command to 9271disassemble individual control methods. 9272 9273Removed references to the "release_current" directory within the Unix 9274release package. 9275 9276Code and Data Size: The current and previous core subsystem library sizes 9277are shown below. These are the code and data sizes for the acpica.lib 9278produced by the Microsoft Visual C++ 6.0 compiler. These values do not 9279include any ACPI driver or OSPM code. The debug version of the code 9280includes 9281the debug output trace mechanism and has a much larger code and data 9282size. 9283Note that these values will vary depending on the efficiency of the 9284compiler 9285and the compiler options used during generation. 9286 9287 Previous Release: 9288 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9289 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9290 Current Release: 9291 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9292 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9293 9294 92952) iASL Compiler/Disassembler: 9296 9297Implemented an error check for illegal duplicate values in the interrupt 9298and 9299dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 9300Interrupt(). 9301 9302Implemented error checking for the Irq() and IrqNoFlags() macros to 9303detect 9304too many values in the interrupt list (16 max) and invalid values in the 9305list (range 0 - 15) 9306 9307The maximum length string literal within an ASL file is now restricted to 9308200 characters as per the ACPI specification. 9309 9310Fixed a fault when using the -ln option (generate namespace listing). 9311 9312Implemented an error check to determine if a DescriptorName within a 9313resource descriptor has already been used within the current scope. 9314 9315---------------------------------------- 931615 August 2005. Summary of changes for version 20050815: 9317 93181) ACPI CA Core Subsystem: 9319 9320Implemented a full bytewise compare to determine if a table load request 9321is 9322attempting to load a duplicate table. The compare is performed if the 9323table 9324signatures and table lengths match. This will allow different tables with 9325the same OEM Table ID and revision to be loaded - probably against the 9326ACPI 9327specification, but discovered in the field nonetheless. 9328 9329Added the changes.txt logfile to each of the zipped release packages. 9330 9331Code and Data Size: Current and previous core subsystem library sizes are 9332shown below. These are the code and data sizes for the acpica.lib 9333produced 9334by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9335any ACPI driver or OSPM code. The debug version of the code includes the 9336debug output trace mechanism and has a much larger code and data size. 9337Note 9338that these values will vary depending on the efficiency of the compiler 9339and 9340the compiler options used during generation. 9341 9342 Previous Release: 9343 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9344 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9345 Current Release: 9346 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9347 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9348 9349 93502) iASL Compiler/Disassembler: 9351 9352Fixed a problem where incorrect AML code could be generated for Package 9353objects if optimization is disabled (via the -oa switch). 9354 9355Fixed a problem with where incorrect AML code is generated for variable- 9356length packages when the package length is not specified and the number 9357of 9358initializer values is greater than 255. 9359 9360 9361---------------------------------------- 936229 July 2005. Summary of changes for version 20050729: 9363 93641) ACPI CA Core Subsystem: 9365 9366Implemented support to ignore an attempt to install/load a particular 9367ACPI 9368table more than once. Apparently there exists BIOS code that repeatedly 9369attempts to load the same SSDT upon certain events. With assistance from 9370Venkatesh Pallipadi. 9371 9372Restructured the main interface to the AML parser in order to correctly 9373handle all exceptional conditions. This will prevent leakage of the 9374OwnerId 9375resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 9376some 9377machines. With assistance from Alexey Starikovskiy. 9378 9379Support for "module level code" has been disabled in this version due to 9380a 9381number of issues that have appeared on various machines. The support can 9382be 9383enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 9384compilation. When the issues are fully resolved, the code will be enabled 9385by 9386default again. 9387 9388Modified the internal functions for debug print support to define the 9389FunctionName parameter as a (const char *) for compatibility with 9390compiler 9391built-in macros such as __FUNCTION__, etc. 9392 9393Linted the entire ACPICA source tree for both 32-bit and 64-bit. 9394 9395Implemented support to display an object count summary for the AML 9396Debugger 9397commands Object and Methods. 9398 9399Code and Data Size: Current and previous core subsystem library sizes are 9400shown below. These are the code and data sizes for the acpica.lib 9401produced 9402by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9403any ACPI driver or OSPM code. The debug version of the code includes the 9404debug output trace mechanism and has a much larger code and data size. 9405Note 9406that these values will vary depending on the efficiency of the compiler 9407and 9408the compiler options used during generation. 9409 9410 Previous Release: 9411 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9412 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9413 Current Release: 9414 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9415 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9416 9417 94182) iASL Compiler/Disassembler: 9419 9420Fixed a regression that appeared in the 20050708 version of the compiler 9421where an error message was inadvertently emitted for invocations of the 9422_OSI 9423reserved control method. 9424 9425---------------------------------------- 942608 July 2005. Summary of changes for version 20050708: 9427 94281) ACPI CA Core Subsystem: 9429 9430The use of the CPU stack in the debug version of the subsystem has been 9431considerably reduced. Previously, a debug structure was declared in every 9432function that used the debug macros. This structure has been removed in 9433favor of declaring the individual elements as parameters to the debug 9434functions. This reduces the cumulative stack use during nested execution 9435of 9436ACPI function calls at the cost of a small increase in the code size of 9437the 9438debug version of the subsystem. With assistance from Alexey Starikovskiy 9439and 9440Len Brown. 9441 9442Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 9443headers to define a macro that will return the current function name at 9444runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 9445by 9446the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 9447compiler-dependent header, the function name is saved on the CPU stack 9448(one 9449pointer per function.) This mechanism is used because apparently there 9450exists no standard ANSI-C defined macro that that returns the function 9451name. 9452 9453Redesigned and reimplemented the "Owner ID" mechanism used to track 9454namespace objects created/deleted by ACPI tables and control method 9455execution. A bitmap is now used to allocate and free the IDs, thus 9456solving 9457the wraparound problem present in the previous implementation. The size 9458of 9459the namespace node descriptor was reduced by 2 bytes as a result (Alexey 9460Starikovskiy). 9461 9462Removed the UINT32_BIT and UINT16_BIT types that were used for the 9463bitfield 9464flag definitions within the headers for the predefined ACPI tables. These 9465have been replaced by UINT8_BIT in order to increase the code portability 9466of 9467the subsystem. If the use of UINT8 remains a problem, we may be forced to 9468eliminate bitfields entirely because of a lack of portability. 9469 9470Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 9471This 9472is a frequently used function and this improvement increases the 9473performance 9474of the entire subsystem (Alexey Starikovskiy). 9475 9476Fixed several possible memory leaks and the inverse - premature object 9477deletion (Alexey Starikovskiy). 9478 9479Code and Data Size: Current and previous core subsystem library sizes are 9480shown below. These are the code and data sizes for the acpica.lib 9481produced 9482by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9483any ACPI driver or OSPM code. The debug version of the code includes the 9484debug output trace mechanism and has a much larger code and data size. 9485Note 9486that these values will vary depending on the efficiency of the compiler 9487and 9488the compiler options used during generation. 9489 9490 Previous Release: 9491 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9492 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9493 Current 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 9497---------------------------------------- 949824 June 2005. Summary of changes for version 20050624: 9499 95001) ACPI CA Core Subsystem: 9501 9502Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 9503the host-defined cache object. This allows the OSL implementation to 9504define 9505and type this object in any manner desired, simplifying the OSL 9506implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 9507Linux, and should be defined in the OS-specific header file for other 9508operating systems as required. 9509 9510Changed the interface to AcpiOsAcquireObject to directly return the 9511requested object as the function return (instead of ACPI_STATUS.) This 9512change was made for performance reasons, since this is the purpose of the 9513interface in the first place. AcpiOsAcquireObject is now similar to the 9514AcpiOsAllocate interface. 9515 9516Implemented a new AML debugger command named Businfo. This command 9517displays 9518information about all devices that have an associate _PRT object. The 9519_ADR, 9520_HID, _UID, and _CID are displayed for these devices. 9521 9522Modified the initialization sequence in AcpiInitializeSubsystem to call 9523the 9524OSL interface AcpiOslInitialize first, before any local initialization. 9525This 9526change was required because the global initialization now calls OSL 9527interfaces. 9528 9529Enhanced the Dump command to display the entire contents of Package 9530objects 9531(including all sub-objects and their values.) 9532 9533Restructured the code base to split some files because of size and/or 9534because the code logically belonged in a separate file. New files are 9535listed 9536below. All makefiles and project files included in the ACPI CA release 9537have 9538been updated. 9539 utilities/utcache.c /* Local cache interfaces */ 9540 utilities/utmutex.c /* Local mutex support */ 9541 utilities/utstate.c /* State object support */ 9542 interpreter/parser/psloop.c /* Main AML parse loop */ 9543 9544Code and Data Size: Current and previous core subsystem library sizes are 9545shown below. These are the code and data sizes for the acpica.lib 9546produced 9547by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9548any ACPI driver or OSPM code. The debug version of the code includes the 9549debug output trace mechanism and has a much larger code and data size. 9550Note 9551that these values will vary depending on the efficiency of the compiler 9552and 9553the compiler options used during generation. 9554 9555 Previous Release: 9556 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9557 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9558 Current Release: 9559 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9560 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9561 9562 95632) iASL Compiler/Disassembler: 9564 9565Fixed a regression introduced in version 20050513 where the use of a 9566Package 9567object within a Case() statement caused a compile time exception. The 9568original behavior has been restored (a Match() operator is emitted.) 9569 9570---------------------------------------- 957117 June 2005. Summary of changes for version 20050617: 9572 95731) ACPI CA Core Subsystem: 9574 9575Moved the object cache operations into the OS interface layer (OSL) to 9576allow 9577the host OS to handle these operations if desired (for example, the Linux 9578OSL will invoke the slab allocator). This support is optional; the 9579compile 9580time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 9581cache 9582code in the ACPI CA core. The new OSL interfaces are shown below. See 9583utalloc.c for an example implementation, and acpiosxf.h for the exact 9584interface definitions. With assistance from Alexey Starikovskiy. 9585 AcpiOsCreateCache 9586 AcpiOsDeleteCache 9587 AcpiOsPurgeCache 9588 AcpiOsAcquireObject 9589 AcpiOsReleaseObject 9590 9591Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 9592return 9593and restore a flags parameter. This fits better with many OS lock models. 9594Note: the current execution state (interrupt handler or not) is no longer 9595passed to these interfaces. If necessary, the OSL must determine this 9596state 9597by itself, a simple and fast operation. With assistance from Alexey 9598Starikovskiy. 9599 9600Fixed a problem in the ACPI table handling where a valid XSDT was assumed 9601present if the revision of the RSDP was 2 or greater. According to the 9602ACPI 9603specification, the XSDT is optional in all cases, and the table manager 9604therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 9605Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 9606contain 9607only the RSDT. 9608 9609Fixed an interpreter problem with the Mid() operator in the case of an 9610input 9611string where the resulting output string is of zero length. It now 9612correctly 9613returns a valid, null terminated string object instead of a string object 9614with a null pointer. 9615 9616Fixed a problem with the control method argument handling to allow a 9617store 9618to an Arg object that already contains an object of type Device. The 9619Device 9620object is now correctly overwritten. Previously, an error was returned. 9621 9622 9623Enhanced the debugger Find command to emit object values in addition to 9624the 9625found object pathnames. The output format is the same as the dump 9626namespace 9627command. 9628 9629Enhanced the debugger Set command. It now has the ability to set the 9630value 9631of any Named integer object in the namespace (Previously, only method 9632locals 9633and args could be set.) 9634 9635Code and Data Size: Current and previous core subsystem library sizes are 9636shown below. These are the code and data sizes for the acpica.lib 9637produced 9638by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9639any ACPI driver or OSPM code. The debug version of the code includes the 9640debug output trace mechanism and has a much larger code and data size. 9641Note 9642that these values will vary depending on the efficiency of the compiler 9643and 9644the compiler options used during generation. 9645 9646 Previous Release: 9647 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9648 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9649 Current Release: 9650 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9651 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9652 9653 96542) iASL Compiler/Disassembler: 9655 9656Fixed a regression in the disassembler where if/else/while constructs 9657were 9658output incorrectly. This problem was introduced in the previous release 9659(20050526). This problem also affected the single-step disassembly in the 9660debugger. 9661 9662Fixed a problem where compiling the reserved _OSI method would randomly 9663(but 9664rarely) produce compile errors. 9665 9666Enhanced the disassembler to emit compilable code in the face of 9667incorrect 9668AML resource descriptors. If the optional ResourceSourceIndex is present, 9669but the ResourceSource is not, do not emit the ResourceSourceIndex in the 9670disassembly. Otherwise, the resulting code cannot be compiled without 9671errors. 9672 9673---------------------------------------- 967426 May 2005. Summary of changes for version 20050526: 9675 96761) ACPI CA Core Subsystem: 9677 9678Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 9679the module level (not within a control method.) These opcodes are 9680executed 9681exactly once at the time the table is loaded. This type of code was legal 9682up 9683until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 9684in 9685order to provide backwards compatibility with earlier BIOS 9686implementations. 9687This eliminates the "Encountered executable code at module level" warning 9688that was previously generated upon detection of such code. 9689 9690Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 9691inadvertently be generated during the lookup of namespace objects in the 9692second pass parse of ACPI tables and control methods. It appears that 9693this 9694problem could occur during the resolution of forward references to 9695namespace 9696objects. 9697 9698Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 9699corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 9700allows the deadlock detection debug code to be compiled out in the normal 9701case, improving mutex performance (and overall subsystem performance) 9702considerably. 9703 9704Implemented a handful of miscellaneous fixes for possible memory leaks on 9705error conditions and error handling control paths. These fixes were 9706suggested by FreeBSD and the Coverity Prevent source code analysis tool. 9707 9708Added a check for a null RSDT pointer in AcpiGetFirmwareTable 9709(tbxfroot.c) 9710to prevent a fault in this error case. 9711 9712Code and Data Size: Current and previous core subsystem library sizes are 9713shown below. These are the code and data sizes for the acpica.lib 9714produced 9715by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9716any ACPI driver or OSPM code. The debug version of the code includes the 9717debug output trace mechanism and has a much larger code and data size. 9718Note 9719that these values will vary depending on the efficiency of the compiler 9720and 9721the compiler options used during generation. 9722 9723 Previous Release: 9724 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9725 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9726 Current Release: 9727 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9728 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9729 9730 97312) iASL Compiler/Disassembler: 9732 9733Implemented support to allow Type 1 and Type 2 ASL operators to appear at 9734the module level (not within a control method.) These operators will be 9735executed once at the time the table is loaded. This type of code was 9736legal 9737up until the release of ACPI 2.0B (2002) and is now supported by the iASL 9738compiler in order to provide backwards compatibility with earlier BIOS 9739ASL 9740code. 9741 9742The ACPI integer width (specified via the table revision ID or the -r 9743override, 32 or 64 bits) is now used internally during compile-time 9744constant 9745folding to ensure that constants are truncated to 32 bits if necessary. 9746Previously, the revision ID value was only emitted in the AML table 9747header. 9748 9749An error message is now generated for the Mutex and Method operators if 9750the 9751SyncLevel parameter is outside the legal range of 0 through 15. 9752 9753Fixed a problem with the Method operator ParameterTypes list handling 9754(ACPI 97553.0). Previously, more than 2 types or 2 arguments generated a syntax 9756error. 9757The actual underlying implementation of method argument typechecking is 9758still under development, however. 9759 9760---------------------------------------- 976113 May 2005. Summary of changes for version 20050513: 9762 97631) ACPI CA Core Subsystem: 9764 9765Implemented support for PCI Express root bridges -- added support for 9766device 9767PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 9768 9769The interpreter now automatically truncates incoming 64-bit constants to 977032 9771bits if currently executing out of a 32-bit ACPI table (Revision < 2). 9772This 9773also affects the iASL compiler constant folding. (Note: as per below, the 9774iASL compiler no longer allows 64-bit constants within 32-bit tables.) 9775 9776Fixed a problem where string and buffer objects with "static" pointers 9777(pointers to initialization data within an ACPI table) were not handled 9778consistently. The internal object copy operation now always copies the 9779data 9780to a newly allocated buffer, regardless of whether the source object is 9781static or not. 9782 9783Fixed a problem with the FromBCD operator where an implicit result 9784conversion was improperly performed while storing the result to the 9785target 9786operand. Since this is an "explicit conversion" operator, the implicit 9787conversion should never be performed on the output. 9788 9789Fixed a problem with the CopyObject operator where a copy to an existing 9790named object did not always completely overwrite the existing object 9791stored 9792at name. Specifically, a buffer-to-buffer copy did not delete the 9793existing 9794buffer. 9795 9796Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 9797and 9798structs for consistency. 9799 9800Code and Data Size: Current and previous core subsystem library sizes are 9801shown below. These are the code and data sizes for the acpica.lib 9802produced 9803by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9804any ACPI driver or OSPM code. The debug version of the code includes the 9805debug output trace mechanism and has a much larger code and data size. 9806Note 9807that these values will vary depending on the efficiency of the compiler 9808and 9809the compiler options used during generation. 9810 9811 Previous Release: 9812 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9813 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9814 Current Release: (Same sizes) 9815 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9816 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9817 9818 98192) iASL Compiler/Disassembler: 9820 9821The compiler now emits a warning if an attempt is made to generate a 64- 9822bit 9823integer constant from within a 32-bit ACPI table (Revision < 2). The 9824integer 9825is truncated to 32 bits. 9826 9827Fixed a problem with large package objects: if the static length of the 9828package is greater than 255, the "variable length package" opcode is 9829emitted. Previously, this caused an error. This requires an update to the 9830ACPI spec, since it currently (incorrectly) states that packages larger 9831than 9832255 elements are not allowed. 9833 9834The disassembler now correctly handles variable length packages and 9835packages 9836larger than 255 elements. 9837 9838---------------------------------------- 983908 April 2005. Summary of changes for version 20050408: 9840 98411) ACPI CA Core Subsystem: 9842 9843Fixed three cases in the interpreter where an "index" argument to an ASL 9844function was still (internally) 32 bits instead of the required 64 bits. 9845This was the Index argument to the Index, Mid, and Match operators. 9846 9847The "strupr" function is now permanently local (AcpiUtStrupr), since this 9848is 9849not a POSIX-defined function and not present in most kernel-level C 9850libraries. All references to the C library strupr function have been 9851removed 9852from the headers. 9853 9854Completed the deployment of static functions/prototypes. All prototypes 9855with 9856the static attribute have been moved from the headers to the owning C 9857file. 9858 9859Implemented an extract option (-e) for the AcpiBin utility (AML binary 9860utility). This option allows the utility to extract individual ACPI 9861tables 9862from the output of AcpiDmp. It provides the same functionality of the 9863acpixtract.pl perl script without the worry of setting the correct perl 9864options. AcpiBin runs on Windows and has not yet been generated/validated 9865in 9866the Linux/Unix environment (but should be soon). 9867 9868Updated and fixed the table dump option for AcpiBin (-d). This option 9869converts a single ACPI table to a hex/ascii file, similar to the output 9870of 9871AcpiDmp. 9872 9873Code and Data Size: Current and previous core subsystem library sizes are 9874shown below. These are the code and data sizes for the acpica.lib 9875produced 9876by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9877any ACPI driver or OSPM code. The debug version of the code includes the 9878debug output trace mechanism and has a much larger code and data size. 9879Note 9880that these values will vary depending on the efficiency of the compiler 9881and 9882the compiler options used during generation. 9883 9884 Previous Release: 9885 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9886 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9887 Current Release: 9888 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9889 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9890 9891 98922) iASL Compiler/Disassembler: 9893 9894Disassembler fix: Added a check to ensure that the table length found in 9895the 9896ACPI table header within the input file is not longer than the actual 9897input 9898file size. This indicates some kind of file or table corruption. 9899 9900---------------------------------------- 990129 March 2005. Summary of changes for version 20050329: 9902 99031) ACPI CA Core Subsystem: 9904 9905An error is now generated if an attempt is made to create a Buffer Field 9906of 9907length zero (A CreateField with a length operand of zero.) 9908 9909The interpreter now issues a warning whenever executable code at the 9910module 9911level is detected during ACPI table load. This will give some idea of the 9912prevalence of this type of code. 9913 9914Implemented support for references to named objects (other than control 9915methods) within package objects. 9916 9917Enhanced package object output for the debug object. Package objects are 9918now 9919completely dumped, showing all elements. 9920 9921Enhanced miscellaneous object output for the debug object. Any object can 9922now be written to the debug object (for example, a device object can be 9923written, and the type of the object will be displayed.) 9924 9925The "static" qualifier has been added to all local functions across both 9926the 9927core subsystem and the iASL compiler. 9928 9929The number of "long" lines (> 80 chars) within the source has been 9930significantly reduced, by about 1/3. 9931 9932Cleaned up all header files to ensure that all CA/iASL functions are 9933prototyped (even static functions) and the formatting is consistent. 9934 9935Two new header files have been added, acopcode.h and acnames.h. 9936 9937Removed several obsolete functions that were no longer used. 9938 9939Code and Data Size: Current and previous core subsystem library sizes are 9940shown below. These are the code and data sizes for the acpica.lib 9941produced 9942by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9943any ACPI driver or OSPM code. The debug version of the code includes the 9944debug output trace mechanism and has a much larger code and data size. 9945Note 9946that these values will vary depending on the efficiency of the compiler 9947and 9948the compiler options used during generation. 9949 9950 Previous Release: 9951 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9952 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9953 Current Release: 9954 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9955 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9956 9957 9958 99592) iASL Compiler/Disassembler: 9960 9961Fixed a problem with the resource descriptor generation/support. For the 9962ResourceSourceIndex and the ResourceSource fields, both must be present, 9963or 9964both must be not present - can't have one without the other. 9965 9966The compiler now returns non-zero from the main procedure if any errors 9967have 9968occurred during the compilation. 9969 9970 9971---------------------------------------- 997209 March 2005. Summary of changes for version 20050309: 9973 99741) ACPI CA Core Subsystem: 9975 9976The string-to-buffer implicit conversion code has been modified again 9977after 9978a change to the ACPI specification. In order to match the behavior of 9979the 9980other major ACPI implementation, the target buffer is no longer truncated 9981if 9982the source string is smaller than an existing target buffer. This change 9983requires an update to the ACPI spec, and should eliminate the recent 9984AE_AML_BUFFER_LIMIT issues. 9985 9986The "implicit return" support was rewritten to a new algorithm that 9987solves 9988the general case. Rather than attempt to determine when a method is about 9989to 9990exit, the result of every ASL operator is saved momentarily until the 9991very 9992next ASL operator is executed. Therefore, no matter how the method exits, 9993there will always be a saved implicit return value. This feature is only 9994enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 9995eliminate 9996AE_AML_NO_RETURN_VALUE errors when enabled. 9997 9998Implemented implicit conversion support for the predicate (operand) of 9999the 10000If, Else, and While operators. String and Buffer arguments are 10001automatically 10002converted to Integers. 10003 10004Changed the string-to-integer conversion behavior to match the new ACPI 10005errata: "If no integer object exists, a new integer is created. The ASCII 10006string is interpreted as a hexadecimal constant. Each string character is 10007interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 10008with the first character as the most significant digit, and ending with 10009the 10010first non-hexadecimal character or end-of-string." This means that the 10011first 10012non-hex character terminates the conversion and this is the code that was 10013changed. 10014 10015Fixed a problem where the ObjectType operator would fail (fault) when 10016used 10017on an Index of a Package which pointed to a null package element. The 10018operator now properly returns zero (Uninitialized) in this case. 10019 10020Fixed a problem where the While operator used excessive memory by not 10021properly popping the result stack during execution. There was no memory 10022leak 10023after execution, however. (Code provided by Valery Podrezov.) 10024 10025Fixed a problem where references to control methods within Package 10026objects 10027caused the method to be invoked, instead of producing a reference object 10028pointing to the method. 10029 10030Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 10031to 10032improve performance and reduce code size. (Code provided by Alexey 10033Starikovskiy.) 10034 10035Code and Data Size: Current and previous core subsystem library sizes are 10036shown below. These are the code and data sizes for the acpica.lib 10037produced 10038by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10039any ACPI driver or OSPM code. The debug version of the code includes the 10040debug output trace mechanism and has a much larger code and data size. 10041Note 10042that these values will vary depending on the efficiency of the compiler 10043and 10044the compiler options used during generation. 10045 10046 Previous Release: 10047 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10048 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10049 Current Release: 10050 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10051 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10052 10053 100542) iASL Compiler/Disassembler: 10055 10056Fixed a problem with the Return operator with no arguments. Since the AML 10057grammar for the byte encoding requires an operand for the Return opcode, 10058the 10059compiler now emits a Return(Zero) for this case. An ACPI specification 10060update has been written for this case. 10061 10062For tables other than the DSDT, namepath optimization is automatically 10063disabled. This is because SSDTs can be loaded anywhere in the namespace, 10064the 10065compiler has no knowledge of where, and thus cannot optimize namepaths. 10066 10067Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 10068inadvertently omitted from the ACPI specification, and will require an 10069update to the spec. 10070 10071The source file scan for ASCII characters is now optional (-a). This 10072change 10073was made because some vendors place non-ascii characters within comments. 10074However, the scan is simply a brute-force byte compare to ensure all 10075characters in the file are in the range 0x00 to 0x7F. 10076 10077Fixed a problem with the CondRefOf operator where the compiler was 10078inappropriately checking for the existence of the target. Since the point 10079of 10080the operator is to check for the existence of the target at run-time, the 10081compiler no longer checks for the target existence. 10082 10083Fixed a problem where errors generated from the internal AML interpreter 10084during constant folding were not handled properly, causing a fault. 10085 10086Fixed a problem with overly aggressive range checking for the Stall 10087operator. The valid range (max 255) is now only checked if the operand is 10088of 10089type Integer. All other operand types cannot be statically checked. 10090 10091Fixed a problem where control method references within the RefOf, 10092DeRefOf, 10093and ObjectType operators were not treated properly. They are now treated 10094as 10095actual references, not method invocations. 10096 10097Fixed and enhanced the "list namespace" option (-ln). This option was 10098broken 10099a number of releases ago. 10100 10101Improved error handling for the Field, IndexField, and BankField 10102operators. 10103The compiler now cleanly reports and recovers from errors in the field 10104component (FieldUnit) list. 10105 10106Fixed a disassembler problem where the optional ResourceDescriptor fields 10107TRS and TTP were not always handled correctly. 10108 10109Disassembler - Comments in output now use "//" instead of "/*" 10110 10111---------------------------------------- 1011228 February 2005. Summary of changes for version 20050228: 10113 101141) ACPI CA Core Subsystem: 10115 10116Fixed a problem where the result of an Index() operator (an object 10117reference) must increment the reference count on the target object for 10118the 10119life of the object reference. 10120 10121Implemented AML Interpreter and Debugger support for the new ACPI 3.0 10122Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 10123WordSpace 10124resource descriptors. 10125 10126Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 10127Space Descriptor" string, indicating interpreter support for the 10128descriptors 10129above. 10130 10131Implemented header support for the new ACPI 3.0 FADT flag bits. 10132 10133Implemented header support for the new ACPI 3.0 PCI Express bits for the 10134PM1 10135status/enable registers. 10136 10137Updated header support for the MADT processor local Apic struct and MADT 10138platform interrupt source struct for new ACPI 3.0 fields. 10139 10140Implemented header support for the SRAT and SLIT ACPI tables. 10141 10142Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 10143flag 10144at runtime. 10145 10146Code and Data Size: Current and previous core subsystem library sizes are 10147shown below. These are the code and data sizes for the acpica.lib 10148produced 10149by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10150any ACPI driver or OSPM code. The debug version of the code includes the 10151debug output trace mechanism and has a much larger code and data size. 10152Note 10153that these values will vary depending on the efficiency of the compiler 10154and 10155the compiler options used during generation. 10156 10157 Previous Release: 10158 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10159 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10160 Current Release: 10161 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10162 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10163 10164 101652) iASL Compiler/Disassembler: 10166 10167Fixed a problem with the internal 64-bit String-to-integer conversion 10168with 10169strings less than two characters long. 10170 10171Fixed a problem with constant folding where the result of the Index() 10172operator can not be considered a constant. This means that Index() cannot 10173be 10174a type3 opcode and this will require an update to the ACPI specification. 10175 10176Disassembler: Implemented support for the TTP, MTP, and TRS resource 10177descriptor fields. These fields were inadvertently ignored and not output 10178in 10179the disassembly of the resource descriptor. 10180 10181 10182 ---------------------------------------- 1018311 February 2005. Summary of changes for version 20050211: 10184 101851) ACPI CA Core Subsystem: 10186 10187Implemented ACPI 3.0 support for implicit conversion within the Match() 10188operator. MatchObjects can now be of type integer, buffer, or string 10189instead 10190of just type integer. Package elements are implicitly converted to the 10191type 10192of the MatchObject. This change aligns the behavior of Match() with the 10193behavior of the other logical operators (LLess(), etc.) It also requires 10194an 10195errata change to the ACPI specification as this support was intended for 10196ACPI 3.0, but was inadvertently omitted. 10197 10198Fixed a problem with the internal implicit "to buffer" conversion. 10199Strings 10200that are converted to buffers will cause buffer truncation if the string 10201is 10202smaller than the target buffer. Integers that are converted to buffers 10203will 10204not cause buffer truncation, only zero extension (both as per the ACPI 10205spec.) The problem was introduced when code was added to truncate the 10206buffer, but this should not be performed in all cases, only the string 10207case. 10208 10209Fixed a problem with the Buffer and Package operators where the 10210interpreter 10211would get confused if two such operators were used as operands to an ASL 10212operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 10213stack was not being popped after the execution of these operators, 10214resulting 10215in an AE_NO_RETURN_VALUE exception. 10216 10217Fixed a problem with constructs of the form Store(Index(...),...). The 10218reference object returned from Index was inadvertently resolved to an 10219actual 10220value. This problem was introduced in version 20050114 when the behavior 10221of 10222Store() was modified to restrict the object types that can be used as the 10223source operand (to match the ACPI specification.) 10224 10225Reduced excessive stack use within the AcpiGetObjectInfo procedure. 10226 10227Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 10228 10229Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 10230 10231Code and Data Size: Current and previous core subsystem library sizes are 10232shown below. These are the code and data sizes for the acpica.lib 10233produced 10234by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10235any ACPI driver or OSPM code. The debug version of the code includes the 10236debug output trace mechanism and has a much larger code and data size. 10237Note 10238that these values will vary depending on the efficiency of the compiler 10239and 10240the compiler options used during generation. 10241 10242 Previous Release: 10243 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10244 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10245 Current Release: 10246 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10247 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10248 10249 102502) iASL Compiler/Disassembler: 10251 10252Fixed a code generation problem in the constant folding optimization code 10253where incorrect code was generated if a constant was reduced to a buffer 10254object (i.e., a reduced type 5 opcode.) 10255 10256Fixed a typechecking problem for the ToBuffer operator. Caused by an 10257incorrect return type in the internal opcode information table. 10258 10259---------------------------------------- 1026025 January 2005. Summary of changes for version 20050125: 10261 102621) ACPI CA Core Subsystem: 10263 10264Fixed a recently introduced problem with the Global Lock where the 10265underlying semaphore was not created. This problem was introduced in 10266version 20050114, and caused an AE_AML_NO_OPERAND exception during an 10267Acquire() operation on _GL. 10268 10269The local object cache is now optional, and is disabled by default. Both 10270AcpiExec and the iASL compiler enable the cache because they run in user 10271mode and this enhances their performance. #define 10272ACPI_ENABLE_OBJECT_CACHE 10273to enable the local cache. 10274 10275Fixed an issue in the internal function AcpiUtEvaluateObject concerning 10276the 10277optional "implicit return" support where an error was returned if no 10278return 10279object was expected, but one was implicitly returned. AE_OK is now 10280returned 10281in this case and the implicitly returned object is deleted. 10282AcpiUtEvaluateObject is only occasionally used, and only to execute 10283reserved 10284methods such as _STA and _INI where the return type is known up front. 10285 10286Fixed a few issues with the internal convert-to-integer code. It now 10287returns 10288an error if an attempt is made to convert a null string, a string of only 10289blanks/tabs, or a zero-length buffer. This affects both implicit 10290conversion 10291and explicit conversion via the ToInteger() operator. 10292 10293The internal debug code in AcpiUtAcquireMutex has been commented out. It 10294is 10295not needed for normal operation and should increase the performance of 10296the 10297entire subsystem. The code remains in case it is needed for debug 10298purposes 10299again. 10300 10301The AcpiExec source and makefile are included in the Unix/Linux package 10302for 10303the first time. 10304 10305Code and Data Size: Current and previous core subsystem library sizes are 10306shown below. These are the code and data sizes for the acpica.lib 10307produced 10308by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10309any ACPI driver or OSPM code. The debug version of the code includes the 10310debug output trace mechanism and has a much larger code and data size. 10311Note 10312that these values will vary depending on the efficiency of the compiler 10313and 10314the compiler options used during generation. 10315 10316 Previous Release: 10317 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10318 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10319 Current Release: 10320 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10321 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10322 103232) iASL Compiler/Disassembler: 10324 10325Switch/Case support: A warning is now issued if the type of the Switch 10326value 10327cannot be determined at compile time. For example, Switch(Arg0) will 10328generate the warning, and the type is assumed to be an integer. As per 10329the 10330ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 10331the 10332warning. 10333 10334Switch/Case support: Implemented support for buffer and string objects as 10335the switch value. This is an ACPI 3.0 feature, now that LEqual supports 10336buffers and strings. 10337 10338Switch/Case support: The emitted code for the LEqual() comparisons now 10339uses 10340the switch value as the first operand, not the second. The case value is 10341now 10342the second operand, and this allows the case value to be implicitly 10343converted to the type of the switch value, not the other way around. 10344 10345Switch/Case support: Temporary variables are now emitted immediately 10346within 10347the control method, not at the global level. This means that there are 10348now 1034936 temps available per-method, not 36 temps per-module as was the case 10350with 10351the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 10352 10353---------------------------------------- 1035414 January 2005. Summary of changes for version 20050114: 10355 10356Added 2005 copyright to all module headers. This affects every module in 10357the core subsystem, iASL compiler, and the utilities. 10358 103591) ACPI CA Core Subsystem: 10360 10361Fixed an issue with the String-to-Buffer conversion code where the string 10362null terminator was not included in the buffer after conversion, but 10363there 10364is existing ASL that assumes the string null terminator is included. This 10365is 10366the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 10367introduced in the previous version when the code was updated to correctly 10368set the converted buffer size as per the ACPI specification. The ACPI 10369spec 10370is ambiguous and will be updated to specify that the null terminator must 10371be 10372included in the converted buffer. This also affects the ToBuffer() ASL 10373operator. 10374 10375Fixed a problem with the Mid() ASL/AML operator where it did not work 10376correctly on Buffer objects. Newly created sub-buffers were not being 10377marked 10378as initialized. 10379 10380 10381Fixed a problem in AcpiTbFindTable where incorrect string compares were 10382performed on the OemId and OemTableId table header fields. These fields 10383are 10384not null terminated, so strncmp is now used instead of strcmp. 10385 10386Implemented a restriction on the Store() ASL/AML operator to align the 10387behavior with the ACPI specification. Previously, any object could be 10388used 10389as the source operand. Now, the only objects that may be used are 10390Integers, 10391Buffers, Strings, Packages, Object References, and DDB Handles. If 10392necessary, the original behavior can be restored by enabling the 10393EnableInterpreterSlack flag. 10394 10395Enhanced the optional "implicit return" support to allow an implicit 10396return 10397value from methods that are invoked externally via the AcpiEvaluateObject 10398interface. This enables implicit returns from the _STA and _INI methods, 10399for example. 10400 10401Changed the Revision() ASL/AML operator to return the current version of 10402the 10403AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 10404returned 10405the supported ACPI version (This is the function of the _REV method). 10406 10407Updated the _REV predefined method to return the currently supported 10408version 10409of ACPI, now 3. 10410 10411Implemented batch mode option for the AcpiExec utility (-b). 10412 10413Code and Data Size: Current and previous core subsystem library sizes are 10414shown below. These are the code and data sizes for the acpica.lib 10415produced 10416by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10417any ACPI driver or OSPM code. The debug version of the code includes the 10418debug output trace mechanism and has a much larger code and data size. 10419Note 10420that these values will vary depending on the efficiency of the compiler 10421and 10422the compiler options used during generation. 10423 10424 Previous Release: 10425 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10426 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10427 Current Release: 10428 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10429 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10430 10431---------------------------------------- 1043210 December 2004. Summary of changes for version 20041210: 10433 10434ACPI 3.0 support is nearing completion in both the iASL compiler and the 10435ACPI CA core subsystem. 10436 104371) ACPI CA Core Subsystem: 10438 10439Fixed a problem in the ToDecimalString operator where the resulting 10440string 10441length was incorrectly calculated. The length is now calculated exactly, 10442eliminating incorrect AE_STRING_LIMIT exceptions. 10443 10444Fixed a problem in the ToHexString operator to allow a maximum 200 10445character 10446string to be produced. 10447 10448Fixed a problem in the internal string-to-buffer and buffer-to-buffer 10449copy 10450routine where the length of the resulting buffer was not truncated to the 10451new size (if the target buffer already existed). 10452 10453Code and Data Size: Current and previous core subsystem library sizes are 10454shown below. These are the code and data sizes for the acpica.lib 10455produced 10456by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10457any ACPI driver or OSPM code. The debug version of the code includes the 10458debug output trace mechanism and has a much larger code and data size. 10459Note 10460that these values will vary depending on the efficiency of the compiler 10461and 10462the compiler options used during generation. 10463 10464 Previous Release: 10465 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10466 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10467 Current Release: 10468 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10469 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10470 10471 104722) iASL Compiler/Disassembler: 10473 10474Implemented the new ACPI 3.0 resource template macros - DWordSpace, 10475ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 10476Includes support in the disassembler. 10477 10478Implemented support for the new (ACPI 3.0) parameter to the Register 10479macro, 10480AccessSize. 10481 10482Fixed a problem where the _HE resource name for the Interrupt macro was 10483referencing bit 0 instead of bit 1. 10484 10485Implemented check for maximum 255 interrupts in the Interrupt macro. 10486 10487Fixed a problem with the predefined resource descriptor names where 10488incorrect AML code was generated if the offset within the resource buffer 10489was 0 or 1. The optimizer shortened the AML code to a single byte opcode 10490but did not update the surrounding package lengths. 10491 10492Changes to the Dma macro: All channels within the channel list must be 10493in 10494the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 10495optional (default is BusMaster). 10496 10497Implemented check for maximum 7 data bytes for the VendorShort macro. 10498 10499The ReadWrite parameter is now optional for the Memory32 and similar 10500macros. 10501 10502---------------------------------------- 1050303 December 2004. Summary of changes for version 20041203: 10504 105051) ACPI CA Core Subsystem: 10506 10507The low-level field insertion/extraction code (exfldio) has been 10508completely 10509rewritten to eliminate unnecessary complexity, bugs, and boundary 10510conditions. 10511 10512Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 10513ToDecimalString 10514operators where the input operand could be inadvertently deleted if no 10515conversion was necessary (e.g., if the input to ToInteger was an Integer 10516object.) 10517 10518Fixed a problem with the ToDecimalString and ToHexString where an 10519incorrect 10520exception code was returned if the resulting string would be > 200 chars. 10521AE_STRING_LIMIT is now returned. 10522 10523Fixed a problem with the Concatenate operator where AE_OK was always 10524returned, even if the operation failed. 10525 10526Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 10527semaphores to be allocated. 10528 10529Code and Data Size: Current and previous core subsystem library sizes are 10530shown below. These are the code and data sizes for the acpica.lib 10531produced 10532by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10533any ACPI driver or OSPM code. The debug version of the code includes the 10534debug output trace mechanism and has a much larger code and data size. 10535Note 10536that these values will vary depending on the efficiency of the compiler 10537and 10538the compiler options used during generation. 10539 10540 Previous Release: 10541 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10542 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10543 Current Release: 10544 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10545 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10546 10547 105482) iASL Compiler/Disassembler: 10549 10550Fixed typechecking for the ObjectType and SizeOf operators. Problem was 10551recently introduced in 20041119. 10552 10553Fixed a problem with the ToUUID macro where the upper nybble of each 10554buffer 10555byte was inadvertently set to zero. 10556 10557---------------------------------------- 1055819 November 2004. Summary of changes for version 20041119: 10559 105601) ACPI CA Core Subsystem: 10561 10562Fixed a problem in the internal ConvertToInteger routine where new 10563integers 10564were not truncated to 32 bits for 32-bit ACPI tables. This routine 10565converts 10566buffers and strings to integers. 10567 10568Implemented support to store a value to an Index() on a String object. 10569This 10570is an ACPI 2.0 feature that had not yet been implemented. 10571 10572Implemented new behavior for storing objects to individual package 10573elements 10574(via the Index() operator). The previous behavior was to invoke the 10575implicit 10576conversion rules if an object was already present at the index. The new 10577behavior is to simply delete any existing object and directly store the 10578new 10579object. Although the ACPI specification seems unclear on this subject, 10580other 10581ACPI implementations behave in this manner. (This is the root of the 10582AE_BAD_HEX_CONSTANT issue.) 10583 10584Modified the RSDP memory scan mechanism to support the extended checksum 10585for 10586ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 10587RSDP signature is found with a valid checksum. 10588 10589Code and Data Size: Current and previous core subsystem library sizes are 10590shown below. These are the code and data sizes for the acpica.lib 10591produced 10592by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10593any ACPI driver or OSPM code. The debug version of the code includes the 10594debug output trace mechanism and has a much larger code and data size. 10595Note 10596that these values will vary depending on the efficiency of the compiler 10597and 10598the compiler options used during generation. 10599 10600 Previous Release: 10601 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10602 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10603 Current Release: 10604 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10605 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10606 10607 106082) iASL Compiler/Disassembler: 10609 10610Fixed a missing semicolon in the aslcompiler.y file. 10611 10612---------------------------------------- 1061305 November 2004. Summary of changes for version 20041105: 10614 106151) ACPI CA Core Subsystem: 10616 10617Implemented support for FADT revision 2. This was an interim table 10618(between 10619ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 10620 10621Implemented optional support to allow uninitialized LocalX and ArgX 10622variables in a control method. The variables are initialized to an 10623Integer 10624object with a value of zero. This support is enabled by setting the 10625AcpiGbl_EnableInterpreterSlack flag to TRUE. 10626 10627Implemented support for Integer objects for the SizeOf operator. Either 106284 10629or 8 is returned, depending on the current integer size (32-bit or 64- 10630bit, 10631depending on the parent table revision). 10632 10633Fixed a problem in the implementation of the SizeOf and ObjectType 10634operators 10635where the operand was resolved to a value too early, causing incorrect 10636return values for some objects. 10637 10638Fixed some possible memory leaks during exceptional conditions. 10639 10640Code and Data Size: Current and previous core subsystem library sizes are 10641shown below. These are the code and data sizes for the acpica.lib 10642produced 10643by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10644any ACPI driver or OSPM code. The debug version of the code includes the 10645debug output trace mechanism and has a much larger code and data size. 10646Note 10647that these values will vary depending on the efficiency of the compiler 10648and 10649the compiler options used during generation. 10650 10651 Previous Release: 10652 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10653 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10654 Current Release: 10655 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10656 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10657 10658 106592) iASL Compiler/Disassembler: 10660 10661Implemented support for all ACPI 3.0 reserved names and methods. 10662 10663Implemented all ACPI 3.0 grammar elements in the front-end, including 10664support for semicolons. 10665 10666Implemented the ACPI 3.0 Function() and ToUUID() macros 10667 10668Fixed a problem in the disassembler where a Scope() operator would not be 10669emitted properly if the target of the scope was in another table. 10670 10671---------------------------------------- 1067215 October 2004. Summary of changes for version 20041015: 10673 10674Note: ACPI CA is currently undergoing an in-depth and complete formal 10675evaluation to test/verify the following areas. Other suggestions are 10676welcome. This will result in an increase in the frequency of releases and 10677the number of bug fixes in the next few months. 10678 - Functional tests for all ASL/AML operators 10679 - All implicit/explicit type conversions 10680 - Bit fields and operation regions 10681 - 64-bit math support and 32-bit-only "truncated" math support 10682 - Exceptional conditions, both compiler and interpreter 10683 - Dynamic object deletion and memory leaks 10684 - ACPI 3.0 support when implemented 10685 - External interfaces to the ACPI subsystem 10686 10687 106881) ACPI CA Core Subsystem: 10689 10690Fixed two alignment issues on 64-bit platforms - within debug statements 10691in 10692AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 10693Address 10694field within the non-aligned ACPI generic address structure. 10695 10696Fixed a problem in the Increment and Decrement operators where incorrect 10697operand resolution could result in the inadvertent modification of the 10698original integer when the integer is passed into another method as an 10699argument and the arg is then incremented/decremented. 10700 10701Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 10702bit 10703BCD number were truncated during conversion. 10704 10705Fixed a problem in the ToDecimal operator where the length of the 10706resulting 10707string could be set incorrectly too long if the input operand was a 10708Buffer 10709object. 10710 10711Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 10712(0) 10713within a buffer would prematurely terminate a compare between buffer 10714objects. 10715 10716Added a check for string overflow (>200 characters as per the ACPI 10717specification) during the Concatenate operator with two string operands. 10718 10719Code and Data Size: Current and previous core subsystem library sizes are 10720shown below. These are the code and data sizes for the acpica.lib 10721produced 10722by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10723any ACPI driver or OSPM code. The debug version of the code includes the 10724debug output trace mechanism and has a much larger code and data size. 10725Note 10726that these values will vary depending on the efficiency of the compiler 10727and 10728the compiler options used during generation. 10729 10730 Previous Release: 10731 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10732 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10733 Current Release: 10734 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10735 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10736 10737 10738 107392) iASL Compiler/Disassembler: 10740 10741Allow the use of the ObjectType operator on uninitialized Locals and Args 10742(returns 0 as per the ACPI specification). 10743 10744Fixed a problem where the compiler would fault if there was a syntax 10745error 10746in the FieldName of all of the various CreateXXXField operators. 10747 10748Disallow the use of lower case letters within the EISAID macro, as per 10749the 10750ACPI specification. All EISAID strings must be of the form "UUUNNNN" 10751Where 10752U is an uppercase letter and N is a hex digit. 10753 10754 10755---------------------------------------- 1075606 October 2004. Summary of changes for version 20041006: 10757 107581) ACPI CA Core Subsystem: 10759 10760Implemented support for the ACPI 3.0 Timer operator. This ASL function 10761implements a 64-bit timer with 100 nanosecond granularity. 10762 10763Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 10764implement the ACPI 3.0 Timer operator. This allows the host OS to 10765implement 10766the timer with the best clock available. Also, it keeps the core 10767subsystem 10768out of the clock handling business, since the host OS (usually) performs 10769this function. 10770 10771Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 10772functions use a 64-bit address which is part of the packed ACPI Generic 10773Address Structure. Since the structure is non-aligned, the alignment 10774macros 10775are now used to extract the address to a local variable before use. 10776 10777Fixed a problem where the ToInteger operator assumed all input strings 10778were 10779hexadecimal. The operator now handles both decimal strings and hex 10780strings 10781(prefixed with "0x"). 10782 10783Fixed a problem where the string length in the string object created as a 10784result of the internal ConvertToString procedure could be incorrect. This 10785potentially affected all implicit conversions and also the 10786ToDecimalString 10787and ToHexString operators. 10788 10789Fixed two problems in the ToString operator. If the length parameter was 10790zero, an incorrect string object was created and the value of the input 10791length parameter was inadvertently changed from zero to Ones. 10792 10793Fixed a problem where the optional ResourceSource string in the 10794ExtendedIRQ 10795resource macro was ignored. 10796 10797Simplified the interfaces to the internal division functions, reducing 10798code 10799size and complexity. 10800 10801Code and Data Size: Current and previous core subsystem library sizes are 10802shown below. These are the code and data sizes for the acpica.lib 10803produced 10804by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10805any ACPI driver or OSPM code. The debug version of the code includes the 10806debug output trace mechanism and has a much larger code and data size. 10807Note 10808that these values will vary depending on the efficiency of the compiler 10809and 10810the compiler options used during generation. 10811 10812 Previous Release: 10813 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10814 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10815 Current Release: 10816 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10817 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10818 10819 108202) iASL Compiler/Disassembler: 10821 10822Implemented support for the ACPI 3.0 Timer operator. 10823 10824Fixed a problem where the Default() operator was inadvertently ignored in 10825a 10826Switch/Case block. This was a problem in the translation of the Switch 10827statement to If...Else pairs. 10828 10829Added support to allow a standalone Return operator, with no parentheses 10830(or 10831operands). 10832 10833Fixed a problem with code generation for the ElseIf operator where the 10834translated Else...If parse tree was improperly constructed leading to the 10835loss of some code. 10836 10837---------------------------------------- 1083822 September 2004. Summary of changes for version 20040922: 10839 108401) ACPI CA Core Subsystem: 10841 10842Fixed a problem with the implementation of the LNot() operator where 10843"Ones" 10844was not returned for the TRUE case. Changed the code to return Ones 10845instead 10846of (!Arg) which was usually 1. This change affects iASL constant folding 10847for 10848this operator also. 10849 10850Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 10851not 10852initialized properly -- Now zero the entire buffer in this case where the 10853buffer already exists. 10854 10855Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 10856Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 10857related code considerably. This will require changes/updates to all OS 10858interface layers (OSLs.) 10859 10860Implemented a new external interface, AcpiInstallExceptionHandler, to 10861allow 10862a system exception handler to be installed. This handler is invoked upon 10863any 10864run-time exception that occurs during control method execution. 10865 10866Added support for the DSDT in AcpiTbFindTable. This allows the 10867DataTableRegion() operator to access the local copy of the DSDT. 10868 10869Code and Data Size: Current and previous core subsystem library sizes are 10870shown below. These are the code and data sizes for the acpica.lib 10871produced 10872by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10873any ACPI driver or OSPM code. The debug version of the code includes the 10874debug output trace mechanism and has a much larger code and data size. 10875Note 10876that these values will vary depending on the efficiency of the compiler 10877and 10878the compiler options used during generation. 10879 10880 Previous Release: 10881 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10882 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10883 Current Release: 10884 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10885 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10886 10887 108882) iASL Compiler/Disassembler: 10889 10890Fixed a problem with constant folding and the LNot operator. LNot was 10891returning 1 in the TRUE case, not Ones as per the ACPI specification. 10892This 10893could result in the generation of an incorrect folded/reduced constant. 10894 10895End-Of-File is now allowed within a "//"-style comment. A parse error no 10896longer occurs if such a comment is at the very end of the input ASL 10897source 10898file. 10899 10900Implemented the "-r" option to override the Revision in the table header. 10901The initial use of this option will be to simplify the evaluation of the 10902AML 10903interpreter by allowing a single ASL source module to be compiled for 10904either 1090532-bit or 64-bit integers. 10906 10907 10908---------------------------------------- 1090927 August 2004. Summary of changes for version 20040827: 10910 109111) ACPI CA Core Subsystem: 10912 10913- Implemented support for implicit object conversion in the non-numeric 10914logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 10915and 10916LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 10917the second operand is implicitly converted on the fly to match the type 10918of 10919the first operand. For example: 10920 10921 LEqual (Source1, Source2) 10922 10923Source1 and Source2 must each evaluate to an integer, a string, or a 10924buffer. 10925The data type of Source1 dictates the required type of Source2. Source2 10926is 10927implicitly converted if necessary to match the type of Source1. 10928 10929- Updated and corrected the behavior of the string conversion support. 10930The 10931rules concerning conversion of buffers to strings (according to the ACPI 10932specification) are as follows: 10933 10934ToDecimalString - explicit byte-wise conversion of buffer to string of 10935decimal values (0-255) separated by commas. ToHexString - explicit byte- 10936wise 10937conversion of buffer to string of hex values (0-FF) separated by commas. 10938ToString - explicit byte-wise conversion of buffer to string. Byte-by- 10939byte 10940copy with no transform except NULL terminated. Any other implicit buffer- 10941to- 10942string conversion - byte-wise conversion of buffer to string of hex 10943values 10944(0-FF) separated by spaces. 10945 10946- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 10947 10948- Fixed a problem in AcpiNsGetPathnameLength where the returned length 10949was 10950one byte too short in the case of a node in the root scope. This could 10951cause a fault during debug output. 10952 10953- Code and Data Size: Current and previous core subsystem library sizes 10954are 10955shown below. These are the code and data sizes for the acpica.lib 10956produced 10957by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10958any ACPI driver or OSPM code. The debug version of the code includes the 10959debug output trace mechanism and has a much larger code and data size. 10960Note 10961that these values will vary depending on the efficiency of the compiler 10962and 10963the compiler options used during generation. 10964 10965 Previous Release: 10966 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10967 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10968 Current Release: 10969 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10970 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10971 10972 109732) iASL Compiler/Disassembler: 10974 10975- Fixed a Linux generation error. 10976 10977 10978---------------------------------------- 1097916 August 2004. Summary of changes for version 20040816: 10980 109811) ACPI CA Core Subsystem: 10982 10983Designed and implemented support within the AML interpreter for the so- 10984called "implicit return". This support returns the result of the last 10985ASL 10986operation within a control method, in the absence of an explicit Return() 10987operator. A few machines depend on this behavior, even though it is not 10988explicitly supported by the ASL language. It is optional support that 10989can 10990be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 10991 10992Removed support for the PCI_Config address space from the internal low 10993level 10994hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 10995support was not used internally, and would not work correctly anyway 10996because 10997the PCI bus number and segment number were not supported. There are 10998separate interfaces for PCI configuration space access because of the 10999unique 11000interface. 11001 11002Code and Data Size: Current and previous core subsystem library sizes are 11003shown below. These are the code and data sizes for the acpica.lib 11004produced 11005by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11006any ACPI driver or OSPM code. The debug version of the code includes the 11007debug output trace mechanism and has a much larger code and data size. 11008Note 11009that these values will vary depending on the efficiency of the compiler 11010and 11011the compiler options used during generation. 11012 11013 Previous Release: 11014 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11015 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11016 Current Release: 11017 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11018 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11019 11020 110212) iASL Compiler/Disassembler: 11022 11023Fixed a problem where constants in ASL expressions at the root level (not 11024within a control method) could be inadvertently truncated during code 11025generation. This problem was introduced in the 20040715 release. 11026 11027 11028---------------------------------------- 1102915 July 2004. Summary of changes for version 20040715: 11030 110311) ACPI CA Core Subsystem: 11032 11033Restructured the internal HW GPE interfaces to pass/track the current 11034state 11035of interrupts (enabled/disabled) in order to avoid possible deadlock and 11036increase flexibility of the interfaces. 11037 11038Implemented a "lexicographical compare" for String and Buffer objects 11039within 11040the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 11041- 11042as per further clarification to the ACPI specification. Behavior is 11043similar 11044to C library "strcmp". 11045 11046Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 11047external function. In the 32-bit non-debug case, the stack use has been 11048reduced from 168 bytes to 32 bytes. 11049 11050Deployed a new run-time configuration flag, 11051AcpiGbl_EnableInterpreterSlack, 11052whose purpose is to allow the AML interpreter to forgive certain bad AML 11053constructs. Default setting is FALSE. 11054 11055Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 11056IO 11057support code. If enabled, it allows field access to go beyond the end of 11058a 11059region definition if the field is within the region length rounded up to 11060the 11061next access width boundary (a common coding error.) 11062 11063Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 11064ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 11065these 11066symbols are lowercased by the latest version of the AcpiSrc tool. 11067 11068The prototypes for the PCI interfaces in acpiosxf.h have been updated to 11069rename "Register" to simply "Reg" to prevent certain compilers from 11070complaining. 11071 11072Code and Data Size: Current and previous core subsystem library sizes are 11073shown below. These are the code and data sizes for the acpica.lib 11074produced 11075by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11076any ACPI driver or OSPM code. The debug version of the code includes the 11077debug output trace mechanism and has a much larger code and data size. 11078Note 11079that these values will vary depending on the efficiency of the compiler 11080and 11081the compiler options used during generation. 11082 11083 Previous Release: 11084 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11085 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11086 Current Release: 11087 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11088 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11089 11090 110912) iASL Compiler/Disassembler: 11092 11093Implemented full support for Package objects within the Case() operator. 11094Note: The Break() operator is currently not supported within Case blocks 11095(TermLists) as there is some question about backward compatibility with 11096ACPI 110971.0 interpreters. 11098 11099 11100Fixed a problem where complex terms were not supported properly within 11101the 11102Switch() operator. 11103 11104Eliminated extraneous warning for compiler-emitted reserved names of the 11105form "_T_x". (Used in Switch/Case operators.) 11106 11107Eliminated optimization messages for "_T_x" objects and small constants 11108within the DefinitionBlock operator. 11109 11110 11111---------------------------------------- 1111215 June 2004. Summary of changes for version 20040615: 11113 111141) ACPI CA Core Subsystem: 11115 11116Implemented support for Buffer and String objects (as per ACPI 2.0) for 11117the 11118following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11119LLessEqual. 11120 11121All directory names in the entire source package are lower case, as they 11122were in earlier releases. 11123 11124Implemented "Disassemble" command in the AML debugger that will 11125disassemble 11126a single control method. 11127 11128Code and Data Size: Current and previous core subsystem library sizes are 11129shown below. These are the code and data sizes for the acpica.lib 11130produced 11131by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11132any ACPI driver or OSPM code. The debug version of the code includes the 11133debug output trace mechanism and has a much larger code and data size. 11134Note 11135that these values will vary depending on the efficiency of the compiler 11136and 11137the compiler options used during generation. 11138 11139 Previous Release: 11140 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11141 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11142 11143 Current Release: 11144 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11145 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11146 11147 111482) iASL Compiler/Disassembler: 11149 11150Implemented support for Buffer and String objects (as per ACPI 2.0) for 11151the 11152following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11153LLessEqual. 11154 11155All directory names in the entire source package are lower case, as they 11156were in earlier releases. 11157 11158Fixed a fault when using the -g or -d<nofilename> options if the FADT was 11159not found. 11160 11161Fixed an issue with the Windows version of the compiler where later 11162versions 11163of Windows place the FADT in the registry under the name "FADT" and not 11164"FACP" as earlier versions did. This applies when using the -g or - 11165d<nofilename> options. The compiler now looks for both strings as 11166necessary. 11167 11168Fixed a problem with compiler namepath optimization where a namepath 11169within 11170the Scope() operator could not be optimized if the namepath was a subpath 11171of 11172the current scope path. 11173 11174---------------------------------------- 1117527 May 2004. Summary of changes for version 20040527: 11176 111771) ACPI CA Core Subsystem: 11178 11179Completed a new design and implementation for EBDA (Extended BIOS Data 11180Area) 11181support in the RSDP scan code. The original code improperly scanned for 11182the 11183EBDA by simply scanning from memory location 0 to 0x400. The correct 11184method 11185is to first obtain the EBDA pointer from within the BIOS data area, then 11186scan 1K of memory starting at the EBDA pointer. There appear to be few 11187if 11188any machines that place the RSDP in the EBDA, however. 11189 11190Integrated a fix for a possible fault during evaluation of BufferField 11191arguments. Obsolete code that was causing the problem was removed. 11192 11193Found and fixed a problem in the Field Support Code where data could be 11194corrupted on a bit field read that starts on an aligned boundary but does 11195not end on an aligned boundary. Merged the read/write "datum length" 11196calculation code into a common procedure. 11197 11198Rolled in a couple of changes to the FreeBSD-specific header. 11199 11200 11201Code and Data Size: Current and previous core subsystem library sizes are 11202shown below. These are the code and data sizes for the acpica.lib 11203produced 11204by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11205any ACPI driver or OSPM code. The debug version of the code includes the 11206debug output trace mechanism and has a much larger code and data size. 11207Note 11208that these values will vary depending on the efficiency of the compiler 11209and 11210the compiler options used during generation. 11211 11212 Previous Release: 11213 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11214 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11215 Current Release: 11216 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11217 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11218 11219 112202) iASL Compiler/Disassembler: 11221 11222Fixed a generation warning produced by some overly-verbose compilers for 11223a 1122464-bit constant. 11225 11226---------------------------------------- 1122714 May 2004. Summary of changes for version 20040514: 11228 112291) ACPI CA Core Subsystem: 11230 11231Fixed a problem where hardware GPE enable bits sometimes not set properly 11232during and after GPE method execution. Result of 04/27 changes. 11233 11234Removed extra "clear all GPEs" when sleeping/waking. 11235 11236Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 11237AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 11238to 11239the new AcpiEv* calls as appropriate. 11240 11241ACPI_OS_NAME was removed from the OS-specific headers. The default name 11242is 11243now "Microsoft Windows NT" for maximum compatibility. However this can 11244be 11245changed by modifying the acconfig.h file. 11246 11247Allow a single invocation of AcpiInstallNotifyHandler for a handler that 11248traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 11249 11250Run _INI methods on ThermalZone objects. This is against the ACPI 11251specification, but there is apparently ASL code in the field that has 11252these 11253_INI methods, and apparently "other" AML interpreters execute them. 11254 11255Performed a full 16/32/64 bit lint that resulted in some small changes. 11256 11257Added a sleep simulation command to the AML debugger to test sleep code. 11258 11259Code and Data Size: Current and previous core subsystem library sizes are 11260shown below. These are the code and data sizes for the acpica.lib 11261produced 11262by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11263any ACPI driver or OSPM code. The debug version of the code includes the 11264debug output trace mechanism and has a much larger code and data size. 11265Note 11266that these values will vary depending on the efficiency of the compiler 11267and 11268the compiler options used during generation. 11269 11270 Previous Release: 11271 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11272 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11273 Current Release: 11274 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11275 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11276 11277---------------------------------------- 1127827 April 2004. Summary of changes for version 20040427: 11279 112801) ACPI CA Core Subsystem: 11281 11282Completed a major overhaul of the GPE handling within ACPI CA. There are 11283now three types of GPEs: wake-only, runtime-only, and combination 11284wake/run. 11285The only GPEs allowed to be combination wake/run are for button-style 11286devices such as a control-method power button, control-method sleep 11287button, 11288or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 11289not 11290referenced by any _PRW methods are marked for "runtime" and hardware 11291enabled. Any GPE that is referenced by a _PRW method is marked for 11292"wake" 11293(and disabled at runtime). However, at sleep time, only those GPEs that 11294have been specifically enabled for wake via the AcpiEnableGpe interface 11295will 11296actually be hardware enabled. 11297 11298A new external interface has been added, AcpiSetGpeType(), that is meant 11299to 11300be used by device drivers to force a GPE to a particular type. It will 11301be 11302especially useful for the drivers for the button devices mentioned above. 11303 11304Completed restructuring of the ACPI CA initialization sequence so that 11305default operation region handlers are installed before GPEs are 11306initialized 11307and the _PRW methods are executed. This will prevent errors when the 11308_PRW 11309methods attempt to access system memory or I/O space. 11310 11311GPE enable/disable no longer reads the GPE enable register. We now keep 11312the 11313enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 11314thus no longer depend on the hardware to maintain these bits. 11315 11316Always clear the wake status and fixed/GPE status bits before sleep, even 11317for state S5. 11318 11319Improved the AML debugger output for displaying the GPE blocks and their 11320current status. 11321 11322Added new strings for the _OSI method, of the form "Windows 2001 SPx" 11323where 11324x = 0,1,2,3,4. 11325 11326Fixed a problem where the physical address was incorrectly calculated 11327when 11328the Load() operator was used to directly load from an Operation Region 11329(vs. 11330loading from a Field object.) Also added check for minimum table length 11331for 11332this case. 11333 11334Fix for multiple mutex acquisition. Restore original thread SyncLevel on 11335mutex release. 11336 11337Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 11338consistency with the other fields returned. 11339 11340Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 11341structure for each GPE in the system, so the size of this structure is 11342important. 11343 11344CPU stack requirement reduction: Cleaned up the method execution and 11345object 11346evaluation paths so that now a parameter structure is passed, instead of 11347copying the various method parameters over and over again. 11348 11349In evregion.c: Correctly exit and reenter the interpreter region if and 11350only if dispatching an operation region request to a user-installed 11351handler. 11352Do not exit/reenter when dispatching to a default handler (e.g., default 11353system memory or I/O handlers) 11354 11355 11356Notes for updating drivers for the new GPE support. The following 11357changes 11358must be made to ACPI-related device drivers that are attached to one or 11359more 11360GPEs: (This information will be added to the ACPI CA Programmer 11361Reference.) 11362 113631) AcpiInstallGpeHandler no longer automatically enables the GPE, you 11364must 11365explicitly call AcpiEnableGpe. 113662) There is a new interface called AcpiSetGpeType. This should be called 11367before enabling the GPE. Also, this interface will automatically disable 11368the GPE if it is currently enabled. 113693) AcpiEnableGpe no longer supports a GPE type flag. 11370 11371Specific drivers that must be changed: 113721) EC driver: 11373 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 11374AeGpeHandler, NULL); 11375 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 11376 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 11377 113782) Button Drivers (Power, Lid, Sleep): 11379Run _PRW method under parent device 11380If _PRW exists: /* This is a control-method button */ 11381 Extract GPE number and possibly GpeDevice 11382 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 11383 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 11384 11385For all other devices that have _PRWs, we automatically set the GPE type 11386to 11387ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 11388This 11389must be done on a selective basis, usually requiring some kind of user 11390app 11391to allow the user to pick the wake devices. 11392 11393 11394Code and Data Size: Current and previous core subsystem library sizes are 11395shown below. These are the code and data sizes for the acpica.lib 11396produced 11397by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11398any ACPI driver or OSPM code. The debug version of the code includes the 11399debug output trace mechanism and has a much larger code and data size. 11400Note 11401that these values will vary depending on the efficiency of the compiler 11402and 11403the compiler options used during generation. 11404 11405 Previous Release: 11406 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11407 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11408 Current Release: 11409 11410 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11411 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11412 11413 11414 11415---------------------------------------- 1141602 April 2004. Summary of changes for version 20040402: 11417 114181) ACPI CA Core Subsystem: 11419 11420Fixed an interpreter problem where an indirect store through an ArgX 11421parameter was incorrectly applying the "implicit conversion rules" during 11422the store. From the ACPI specification: "If the target is a method local 11423or 11424argument (LocalX or ArgX), no conversion is performed and the result is 11425stored directly to the target". The new behavior is to disable implicit 11426conversion during ALL stores to an ArgX. 11427 11428Changed the behavior of the _PRW method scan to ignore any and all errors 11429returned by a given _PRW. This prevents the scan from aborting from the 11430failure of any single _PRW. 11431 11432Moved the runtime configuration parameters from the global init procedure 11433to 11434static variables in acglobal.h. This will allow the host to override the 11435default values easily. 11436 11437Code and Data Size: Current and previous core subsystem library sizes are 11438shown below. These are the code and data sizes for the acpica.lib 11439produced 11440by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11441any ACPI driver or OSPM code. The debug version of the code includes the 11442debug output trace mechanism and has a much larger code and data size. 11443Note 11444that these values will vary depending on the efficiency of the compiler 11445and 11446the compiler options used during generation. 11447 11448 Previous Release: 11449 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11450 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11451 Current Release: 11452 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11453 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11454 11455 114562) iASL Compiler/Disassembler: 11457 11458iASL now fully disassembles SSDTs. However, External() statements are 11459not 11460generated automatically for unresolved symbols at this time. This is a 11461planned feature for future implementation. 11462 11463Fixed a scoping problem in the disassembler that occurs when the type of 11464the 11465target of a Scope() operator is overridden. This problem caused an 11466incorrectly nested internal namespace to be constructed. 11467 11468Any warnings or errors that are emitted during disassembly are now 11469commented 11470out automatically so that the resulting file can be recompiled without 11471any 11472hand editing. 11473 11474---------------------------------------- 1147526 March 2004. Summary of changes for version 20040326: 11476 114771) ACPI CA Core Subsystem: 11478 11479Implemented support for "wake" GPEs via interaction between GPEs and the 11480_PRW methods. Every GPE that is pointed to by one or more _PRWs is 11481identified as a WAKE GPE and by default will no longer be enabled at 11482runtime. Previously, we were blindly enabling all GPEs with a 11483corresponding 11484_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 11485We 11486believe this has been the cause of thousands of "spurious" GPEs on some 11487systems. 11488 11489This new GPE behavior is can be reverted to the original behavior (enable 11490ALL GPEs at runtime) via a runtime flag. 11491 11492Fixed a problem where aliased control methods could not access objects 11493properly. The proper scope within the namespace was not initialized 11494(transferred to the target of the aliased method) before executing the 11495target method. 11496 11497Fixed a potential race condition on internal object deletion on the 11498return 11499object in AcpiEvaluateObject. 11500 11501Integrated a fix for resource descriptors where both _MEM and _MTP were 11502being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 11503wide, 0x0F instead of 0x03.) 11504 11505Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 11506preventing 11507a 11508fault in some cases. 11509 11510Updated Notify() values for debug statements in evmisc.c 11511 11512Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 11513 11514Code and Data Size: Current and previous core subsystem library sizes are 11515shown below. These are the code and data sizes for the acpica.lib 11516produced 11517by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11518any ACPI driver or OSPM code. The debug version of the code includes the 11519debug output trace mechanism and has a much larger code and data size. 11520Note 11521that these values will vary depending on the efficiency of the compiler 11522and 11523the compiler options used during generation. 11524 11525 Previous Release: 11526 11527 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11528 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11529 Current Release: 11530 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11531 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11532 11533---------------------------------------- 1153411 March 2004. Summary of changes for version 20040311: 11535 115361) ACPI CA Core Subsystem: 11537 11538Fixed a problem where errors occurring during the parse phase of control 11539method execution did not abort cleanly. For example, objects created and 11540installed in the namespace were not deleted. This caused all subsequent 11541invocations of the method to return the AE_ALREADY_EXISTS exception. 11542 11543Implemented a mechanism to force a control method to "Serialized" 11544execution 11545if the method attempts to create namespace objects. (The root of the 11546AE_ALREADY_EXISTS problem.) 11547 11548Implemented support for the predefined _OSI "internal" control method. 11549Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 11550and 11551"Windows 2001.1", and can be easily upgraded for new strings as 11552necessary. 11553This feature will allow "other" operating systems to execute the fully 11554tested, "Windows" code path through the ASL code 11555 11556Global Lock Support: Now allows multiple acquires and releases with any 11557internal thread. Removed concept of "owning thread" for this special 11558mutex. 11559 11560Fixed two functions that were inappropriately declaring large objects on 11561the 11562CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 11563during 11564method execution considerably. 11565 11566Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 11567S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 11568 11569Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 11570defined on the machine. 11571 11572Implemented two runtime options: One to force all control method 11573execution 11574to "Serialized" to mimic Windows behavior, another to disable _OSI 11575support 11576if it causes problems on a given machine. 11577 11578Code and Data Size: Current and previous core subsystem library sizes are 11579shown below. These are the code and data sizes for the acpica.lib 11580produced 11581by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11582any ACPI driver or OSPM code. The debug version of the code includes the 11583debug output trace mechanism and has a much larger code and data size. 11584Note 11585that these values will vary depending on the efficiency of the compiler 11586and 11587the compiler options used during generation. 11588 11589 Previous Release: 11590 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11591 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11592 Current Release: 11593 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11594 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11595 115962) iASL Compiler/Disassembler: 11597 11598Fixed an array size problem for FreeBSD that would cause the compiler to 11599fault. 11600 11601---------------------------------------- 1160220 February 2004. Summary of changes for version 20040220: 11603 11604 116051) ACPI CA Core Subsystem: 11606 11607Implemented execution of _SxD methods for Device objects in the 11608GetObjectInfo interface. 11609 11610Fixed calls to _SST method to pass the correct arguments. 11611 11612Added a call to _SST on wake to restore to "working" state. 11613 11614Check for End-Of-Buffer failure case in the WalkResources interface. 11615 11616Integrated fix for 64-bit alignment issue in acglobal.h by moving two 11617structures to the beginning of the file. 11618 11619After wake, clear GPE status register(s) before enabling GPEs. 11620 11621After wake, clear/enable power button. (Perhaps we should clear/enable 11622all 11623fixed events upon wake.) 11624 11625Fixed a couple of possible memory leaks in the Namespace manager. 11626 11627Integrated latest acnetbsd.h file. 11628 11629---------------------------------------- 1163011 February 2004. Summary of changes for version 20040211: 11631 11632 116331) ACPI CA Core Subsystem: 11634 11635Completed investigation and implementation of the call-by-reference 11636mechanism for control method arguments. 11637 11638Fixed a problem where a store of an object into an indexed package could 11639fail if the store occurs within a different method than the method that 11640created the package. 11641 11642Fixed a problem where the ToDecimal operator could return incorrect 11643results. 11644 11645Fixed a problem where the CopyObject operator could fail on some of the 11646more 11647obscure objects (e.g., Reference objects.) 11648 11649Improved the output of the Debug object to display buffer, package, and 11650index objects. 11651 11652Fixed a problem where constructs of the form "RefOf (ArgX)" did not 11653return 11654the expected result. 11655 11656Added permanent ACPI_REPORT_ERROR macros for all instances of the 11657ACPI_AML_INTERNAL exception. 11658 11659Integrated latest version of acfreebsd.h 11660 11661---------------------------------------- 1166216 January 2004. Summary of changes for version 20040116: 11663 11664The purpose of this release is primarily to update the copyright years in 11665each module, thus causing a huge number of diffs. There are a few small 11666functional changes, however. 11667 116681) ACPI CA Core Subsystem: 11669 11670Improved error messages when there is a problem finding one or more of 11671the 11672required base ACPI tables 11673 11674Reintroduced the definition of APIC_HEADER in actbl.h 11675 11676Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 11677 11678Removed extraneous reference to NewObj in dsmthdat.c 11679 116802) iASL compiler 11681 11682Fixed a problem introduced in December that disabled the correct 11683disassembly 11684of Resource Templates 11685 11686 11687---------------------------------------- 1168803 December 2003. Summary of changes for version 20031203: 11689 116901) ACPI CA Core Subsystem: 11691 11692Changed the initialization of Operation Regions during subsystem 11693init to perform two entire walks of the ACPI namespace; The first 11694to initialize the regions themselves, the second to execute the 11695_REG methods. This fixed some interdependencies across _REG 11696methods found on some machines. 11697 11698Fixed a problem where a Store(Local0, Local1) could simply update 11699the object reference count, and not create a new copy of the 11700object if the Local1 is uninitialized. 11701 11702Implemented support for the _SST reserved method during sleep 11703transitions. 11704 11705Implemented support to clear the SLP_TYP and SLP_EN bits when 11706waking up, this is apparently required by some machines. 11707 11708When sleeping, clear the wake status only if SleepState is not S5. 11709 11710Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 11711pointer arithmetic advanced a string pointer too far. 11712 11713Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 11714could be returned if the requested table has not been loaded. 11715 11716Within the support for IRQ resources, restructured the handling of 11717the active and edge/level bits. 11718 11719Fixed a few problems in AcpiPsxExecute() where memory could be 11720leaked under certain error conditions. 11721 11722Improved error messages for the cases where the ACPI mode could 11723not be entered. 11724 11725Code and Data Size: Current and previous core subsystem library 11726sizes are shown below. These are the code and data sizes for the 11727acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11728these values do not include any ACPI driver or OSPM code. The 11729debug version of the code includes the debug output trace 11730mechanism and has a much larger code and data size. Note that 11731these values will vary depending on the efficiency of the compiler 11732and the compiler options used during generation. 11733 11734 Previous Release (20031029): 11735 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11736 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11737 Current Release: 11738 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11739 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11740 117412) iASL Compiler/Disassembler: 11742 11743Implemented a fix for the iASL disassembler where a bad index was 11744generated. This was most noticeable on 64-bit platforms 11745 11746 11747---------------------------------------- 1174829 October 2003. Summary of changes for version 20031029: 11749 117501) ACPI CA Core Subsystem: 11751 11752 11753Fixed a problem where a level-triggered GPE with an associated 11754_Lxx control method was incorrectly cleared twice. 11755 11756Fixed a problem with the Field support code where an access can 11757occur beyond the end-of-region if the field is non-aligned but 11758extends to the very end of the parent region (resulted in an 11759AE_AML_REGION_LIMIT exception.) 11760 11761Fixed a problem with ACPI Fixed Events where an RT Clock handler 11762would not get invoked on an RTC event. The RTC event bitmasks for 11763the PM1 registers were not being initialized properly. 11764 11765Implemented support for executing _STA and _INI methods for 11766Processor objects. Although this is currently not part of the 11767ACPI specification, there is existing ASL code that depends on the 11768init-time execution of these methods. 11769 11770Implemented and deployed a GetDescriptorName function to decode 11771the various types of internal descriptors. Guards against null 11772descriptors during debug output also. 11773 11774Implemented and deployed a GetNodeName function to extract the 4- 11775character namespace node name. This function simplifies the debug 11776and error output, as well as guarding against null pointers during 11777output. 11778 11779Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 11780simplify the debug and error output of 64-bit integers. This 11781macro replaces the HIDWORD and LODWORD macros for dumping these 11782integers. 11783 11784Updated the implementation of the Stall() operator to only call 11785AcpiOsStall(), and also return an error if the operand is larger 11786than 255. This preserves the required behavior of not 11787relinquishing the processor, as would happen if AcpiOsSleep() was 11788called for "long stalls". 11789 11790Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 11791initialized are now treated as NOOPs. 11792 11793Cleaned up a handful of warnings during 64-bit generation. 11794 11795Fixed a reported error where and incorrect GPE number was passed 11796to the GPE dispatch handler. This value is only used for error 11797output, however. Used this opportunity to clean up and streamline 11798the GPE dispatch code. 11799 11800Code and Data Size: Current and previous core subsystem library 11801sizes are shown below. These are the code and data sizes for the 11802acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11803these values do not include any ACPI driver or OSPM code. The 11804 11805debug version of the code includes the debug output trace 11806mechanism and has a much larger code and data size. Note that 11807these values will vary depending on the efficiency of the compiler 11808and the compiler options used during generation. 11809 11810 Previous Release (20031002): 11811 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11812 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11813 Current Release: 11814 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11815 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11816 11817 118182) iASL Compiler/Disassembler: 11819 11820Updated the iASL compiler to return an error if the operand to the 11821Stall() operator is larger than 255. 11822 11823 11824---------------------------------------- 1182502 October 2003. Summary of changes for version 20031002: 11826 11827 118281) ACPI CA Core Subsystem: 11829 11830Fixed a problem with Index Fields where the index was not 11831incremented for fields that require multiple writes to the 11832index/data registers (Fields that are wider than the data 11833register.) 11834 11835Fixed a problem with all Field objects where a write could go 11836beyond the end-of-field if the field was larger than the access 11837granularity and therefore required multiple writes to complete the 11838request. An extra write beyond the end of the field could happen 11839inadvertently. 11840 11841Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 11842would incorrectly be returned if the width of the Data Register 11843was larger than the specified field access width. 11844 11845Completed fixes for LoadTable() and Unload() and verified their 11846operation. Implemented full support for the "DdbHandle" object 11847throughout the ACPI CA subsystem. 11848 11849Implemented full support for the MADT and ECDT tables in the ACPI 11850CA header files. Even though these tables are not directly 11851consumed by ACPI CA, the header definitions are useful for ACPI 11852device drivers. 11853 11854Integrated resource descriptor fixes posted to the Linux ACPI 11855list. This included checks for minimum descriptor length, and 11856support for trailing NULL strings within descriptors that have 11857optional string elements. 11858 11859Code and Data Size: Current and previous core subsystem library 11860sizes are shown below. These are the code and data sizes for the 11861acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11862these values do not include any ACPI driver or OSPM code. The 11863debug version of the code includes the debug output trace 11864mechanism and has a much larger code and data size. Note that 11865these values will vary depending on the efficiency of the compiler 11866and the compiler options used during generation. 11867 11868 Previous Release (20030918): 11869 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11870 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11871 Current Release: 11872 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11873 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11874 11875 118762) iASL Compiler: 11877 11878Implemented detection of non-ASCII characters within the input 11879source ASL file. This catches attempts to compile binary (AML) 11880files early in the compile, with an informative error message. 11881 11882Fixed a problem where the disassembler would fault if the output 11883filename could not be generated or if the output file could not be 11884opened. 11885 11886---------------------------------------- 1188718 September 2003. Summary of changes for version 20030918: 11888 11889 118901) ACPI CA Core Subsystem: 11891 11892Found and fixed a longstanding problem with the late execution of 11893the various deferred AML opcodes (such as Operation Regions, 11894Buffer Fields, Buffers, and Packages). If the name string 11895specified for the name of the new object placed the object in a 11896scope other than the current scope, the initialization/execution 11897of the opcode failed. The solution to this problem was to 11898implement a mechanism where the late execution of such opcodes 11899does not attempt to lookup/create the name a second time in an 11900incorrect scope. This fixes the "region size computed 11901incorrectly" problem. 11902 11903Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 11904Global Lock AE_BAD_PARAMETER error. 11905 11906Fixed several 64-bit issues with prototypes, casting and data 11907types. 11908 11909Removed duplicate prototype from acdisasm.h 11910 11911Fixed an issue involving EC Operation Region Detach (Shaohua Li) 11912 11913Code and Data Size: Current and previous core subsystem library 11914sizes are shown below. These are the code and data sizes for the 11915acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11916these values do not include any ACPI driver or OSPM code. The 11917debug version of the code includes the debug output trace 11918mechanism and has a much larger code and data size. Note that 11919these values will vary depending on the efficiency of the compiler 11920and the compiler options used during generation. 11921 11922 Previous Release: 11923 11924 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11925 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11926 Current Release: 11927 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11928 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11929 11930 119312) Linux: 11932 11933Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 11934correct sleep time in seconds. 11935 11936---------------------------------------- 1193714 July 2003. Summary of changes for version 20030619: 11938 119391) ACPI CA Core Subsystem: 11940 11941Parse SSDTs in order discovered, as opposed to reverse order 11942(Hrvoje Habjanic) 11943 11944Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 11945Klausner, 11946 Nate Lawson) 11947 11948 119492) Linux: 11950 11951Dynamically allocate SDT list (suggested by Andi Kleen) 11952 11953proc function return value cleanups (Andi Kleen) 11954 11955Correctly handle NMI watchdog during long stalls (Andrew Morton) 11956 11957Make it so acpismp=force works (reported by Andrew Morton) 11958 11959 11960---------------------------------------- 1196119 June 2003. Summary of changes for version 20030619: 11962 119631) ACPI CA Core Subsystem: 11964 11965Fix To/FromBCD, eliminating the need for an arch-specific #define. 11966 11967Do not acquire a semaphore in the S5 shutdown path. 11968 11969Fix ex_digits_needed for 0. (Takayoshi Kochi) 11970 11971Fix sleep/stall code reversal. (Andi Kleen) 11972 11973Revert a change having to do with control method calling 11974semantics. 11975 119762) Linux: 11977 11978acpiphp update (Takayoshi Kochi) 11979 11980Export acpi_disabled for sonypi (Stelian Pop) 11981 11982Mention acpismp=force in config help 11983 11984Re-add acpitable.c and acpismp=force. This improves backwards 11985 11986compatibility and also cleans up the code to a significant degree. 11987 11988Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 11989 11990---------------------------------------- 1199122 May 2003. Summary of changes for version 20030522: 11992 119931) ACPI CA Core Subsystem: 11994 11995Found and fixed a reported problem where an AE_NOT_FOUND error 11996occurred occasionally during _BST evaluation. This turned out to 11997be an Owner ID allocation issue where a called method did not get 11998a new ID assigned to it. Eventually, (after 64k calls), the Owner 11999ID UINT16 would wraparound so that the ID would be the same as the 12000caller's and the called method would delete the caller's 12001namespace. 12002 12003Implemented extended error reporting for control methods that are 12004aborted due to a run-time exception. Output includes the exact 12005AML instruction that caused the method abort, a dump of the method 12006locals and arguments at the time of the abort, and a trace of all 12007nested control method calls. 12008 12009Modified the interpreter to allow the creation of buffers of zero 12010length from the AML code. Implemented new code to ensure that no 12011attempt is made to actually allocate a memory buffer (of length 12012zero) - instead, a simple buffer object with a NULL buffer pointer 12013and length zero is created. A warning is no longer issued when 12014the AML attempts to create a zero-length buffer. 12015 12016Implemented a workaround for the "leading asterisk issue" in 12017_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 12018asterisk is automatically removed if present in any HID, UID, or 12019CID strings. The iASL compiler will still flag this asterisk as 12020an error, however. 12021 12022Implemented full support for _CID methods that return a package of 12023multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 12024now additionally returns a device _CID list if present. This 12025required a change to the external interface in order to pass an 12026ACPI_BUFFER object as a parameter since the _CID list is of 12027variable length. 12028 12029Fixed a problem with the new AE_SAME_HANDLER exception where 12030handler initialization code did not know about this exception. 12031 12032Code and Data Size: Current and previous core subsystem library 12033sizes are shown below. These are the code and data sizes for the 12034acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12035these values do not include any ACPI driver or OSPM code. The 12036debug version of the code includes the debug output trace 12037mechanism and has a much larger code and data size. Note that 12038these values will vary depending on the efficiency of the compiler 12039and the compiler options used during generation. 12040 12041 Previous Release (20030509): 12042 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12043 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12044 Current Release: 12045 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12046 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12047 12048 120492) Linux: 12050 12051Fixed a bug in which we would reinitialize the ACPI interrupt 12052after it was already working, thus disabling all ACPI and the IRQs 12053for any other device sharing the interrupt. (Thanks to Stian 12054Jordet) 12055 12056Toshiba driver update (John Belmonte) 12057 12058Return only 0 or 1 for our interrupt handler status (Andrew 12059Morton) 12060 12061 120623) iASL Compiler: 12063 12064Fixed a reported problem where multiple (nested) ElseIf() 12065statements were not handled correctly by the compiler, resulting 12066in incorrect warnings and incorrect AML code. This was a problem 12067in both the ASL parser and the code generator. 12068 12069 120704) Documentation: 12071 12072Added changes to existing interfaces, new exception codes, and new 12073text concerning reference count object management versus garbage 12074collection. 12075 12076---------------------------------------- 1207709 May 2003. Summary of changes for version 20030509. 12078 12079 120801) ACPI CA Core Subsystem: 12081 12082Changed the subsystem initialization sequence to hold off 12083installation of address space handlers until the hardware has been 12084initialized and the system has entered ACPI mode. This is because 12085the installation of space handlers can cause _REG methods to be 12086run. Previously, the _REG methods could potentially be run before 12087ACPI mode was enabled. 12088 12089Fixed some memory leak issues related to address space handler and 12090notify handler installation. There were some problems with the 12091reference count mechanism caused by the fact that the handler 12092objects are shared across several namespace objects. 12093 12094Fixed a reported problem where reference counts within the 12095namespace were not properly updated when named objects created by 12096method execution were deleted. 12097 12098Fixed a reported problem where multiple SSDTs caused a deletion 12099issue during subsystem termination. Restructured the table data 12100structures to simplify the linked lists and the related code. 12101 12102Fixed a problem where the table ID associated with secondary 12103tables (SSDTs) was not being propagated into the namespace objects 12104created by those tables. This would only present a problem for 12105tables that are unloaded at run-time, however. 12106 12107Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 12108type as the length parameter (instead of UINT32). 12109 12110Solved a long-standing problem where an ALREADY_EXISTS error 12111appears on various systems. This problem could happen when there 12112are multiple PCI_Config operation regions under a single PCI root 12113bus. This doesn't happen very frequently, but there are some 12114systems that do this in the ASL. 12115 12116Fixed a reported problem where the internal DeleteNode function 12117was incorrectly handling the case where a namespace node was the 12118first in the parent's child list, and had additional peers (not 12119the only child, but first in the list of children.) 12120 12121Code and Data Size: Current core subsystem library sizes are shown 12122below. These are the code and data sizes for the acpica.lib 12123produced by the Microsoft Visual C++ 6.0 compiler, and these 12124values do not include any ACPI driver or OSPM code. The debug 12125version of the code includes the debug output trace mechanism and 12126has a much larger code and data size. Note that these values will 12127vary depending on the efficiency of the compiler and the compiler 12128options used during generation. 12129 12130 Previous Release 12131 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12132 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12133 Current Release: 12134 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12135 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12136 12137 121382) Linux: 12139 12140Allow ":" in OS override string (Ducrot Bruno) 12141 12142Kobject fix (Greg KH) 12143 12144 121453 iASL Compiler/Disassembler: 12146 12147Fixed a problem in the generation of the C source code files (AML 12148is emitted in C source statements for BIOS inclusion) where the 12149Ascii dump that appears within a C comment at the end of each line 12150could cause a compile time error if the AML sequence happens to 12151have an open comment or close comment sequence embedded. 12152 12153 12154---------------------------------------- 1215524 April 2003. Summary of changes for version 20030424. 12156 12157 121581) ACPI CA Core Subsystem: 12159 12160Support for big-endian systems has been implemented. Most of the 12161support has been invisibly added behind big-endian versions of the 12162ACPI_MOVE_* macros. 12163 12164Fixed a problem in AcpiHwDisableGpeBlock() and 12165AcpiHwClearGpeBlock() where an incorrect offset was passed to the 12166low level hardware write routine. The offset parameter was 12167actually eliminated from the low level read/write routines because 12168they had become obsolete. 12169 12170Fixed a problem where a handler object was deleted twice during 12171the removal of a fixed event handler. 12172 12173 121742) Linux: 12175 12176A fix for SMP systems with link devices was contributed by 12177 12178Compaq's Dan Zink. 12179 12180(2.5) Return whether we handled the interrupt in our IRQ handler. 12181(Linux ISRs no longer return void, so we can propagate the handler 12182return value from the ACPI CA core back to the OS.) 12183 12184 12185 121863) Documentation: 12187 12188The ACPI CA Programmer Reference has been updated to reflect new 12189interfaces and changes to existing interfaces. 12190 12191---------------------------------------- 1219228 March 2003. Summary of changes for version 20030328. 12193 121941) ACPI CA Core Subsystem: 12195 12196The GPE Block Device support has been completed. New interfaces 12197are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 12198interfaces (enable, disable, clear, getstatus) have been split 12199into separate interfaces for Fixed Events and General Purpose 12200Events (GPEs) in order to support GPE Block Devices properly. 12201 12202Fixed a problem where the error message "Failed to acquire 12203semaphore" would appear during operations on the embedded 12204controller (EC). 12205 12206Code and Data Size: Current core subsystem library sizes are shown 12207below. These are the code and data sizes for the acpica.lib 12208produced by the Microsoft Visual C++ 6.0 compiler, and these 12209values do not include any ACPI driver or OSPM code. The debug 12210version of the code includes the debug output trace mechanism and 12211has a much larger code and data size. Note that these values will 12212vary depending on the efficiency of the compiler and the compiler 12213options used during generation. 12214 12215 Previous Release 12216 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12217 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12218 Current Release: 12219 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12220 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12221 12222 12223---------------------------------------- 1222428 February 2003. Summary of changes for version 20030228. 12225 12226 122271) ACPI CA Core Subsystem: 12228 12229The GPE handling and dispatch code has been completely overhauled 12230in preparation for support of GPE Block Devices (ID ACPI0006). 12231This affects internal data structures and code only; there should 12232be no differences visible externally. One new file has been 12233added, evgpeblk.c 12234 12235The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 12236fields that are used to determine the GPE block lengths. The 12237REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 12238structures are ignored. This is per the ACPI specification but it 12239isn't very clear. The full 256 Block 0/1 GPEs are now supported 12240(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 12241 12242In the SCI interrupt handler, removed the read of the PM1_CONTROL 12243register to look at the SCI_EN bit. On some machines, this read 12244causes an SMI event and greatly slows down SCI events. (This may 12245in fact be the cause of slow battery status response on some 12246systems.) 12247 12248Fixed a problem where a store of a NULL string to a package object 12249could cause the premature deletion of the object. This was seen 12250during execution of the battery _BIF method on some systems, 12251resulting in no battery data being returned. 12252 12253Added AcpiWalkResources interface to simplify parsing of resource 12254lists. 12255 12256Code and Data Size: Current core subsystem library sizes are shown 12257below. These are the code and data sizes for the acpica.lib 12258produced by the Microsoft Visual C++ 6.0 compiler, and these 12259values do not include any ACPI driver or OSPM code. The debug 12260version of the code includes the debug output trace mechanism and 12261has a much larger code and data size. Note that these values will 12262vary depending on the efficiency of the compiler and the compiler 12263options used during generation. 12264 12265 Previous Release 12266 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12267 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12268 Current Release: 12269 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12270 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12271 12272 122732) Linux 12274 12275S3 fixes (Ole Rohne) 12276 12277Update ACPI PHP driver with to use new acpi_walk_resource API 12278(Bjorn Helgaas) 12279 12280Add S4BIOS support (Pavel Machek) 12281 12282Map in entire table before performing checksum (John Stultz) 12283 12284Expand the mem= cmdline to allow the specification of reserved and 12285ACPI DATA blocks (Pavel Machek) 12286 12287Never use ACPI on VISWS 12288 12289Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 12290 12291Revert a change that allowed P_BLK lengths to be 4 or 5. This is 12292causing us to think that some systems support C2 when they really 12293don't. 12294 12295Do not count processor objects for non-present CPUs (Thanks to 12296Dominik Brodowski) 12297 12298 122993) iASL Compiler: 12300 12301Fixed a problem where ASL include files could not be found and 12302opened. 12303 12304Added support for the _PDC reserved name. 12305 12306 12307---------------------------------------- 1230822 January 2003. Summary of changes for version 20030122. 12309 12310 123111) ACPI CA Core Subsystem: 12312 12313Added a check for constructs of the form: Store (Local0, Local0) 12314where Local0 is not initialized. Apparently, some BIOS 12315programmers believe that this is a NOOP. Since this store doesn't 12316do anything anyway, the new prototype behavior will ignore this 12317error. This is a case where we can relax the strict checking in 12318the interpreter in the name of compatibility. 12319 12320 123212) Linux 12322 12323The AcpiSrc Source Conversion Utility has been released with the 12324Linux package for the first time. This is the utility that is 12325used to convert the ACPI CA base source code to the Linux version. 12326 12327(Both) Handle P_BLK lengths shorter than 6 more gracefully 12328 12329(Both) Move more headers to include/acpi, and delete an unused 12330header. 12331 12332(Both) Move drivers/acpi/include directory to include/acpi 12333 12334(Both) Boot functions don't use cmdline, so don't pass it around 12335 12336(Both) Remove include of unused header (Adrian Bunk) 12337 12338(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 12339the 12340former now also includes the latter, acpiphp.h only needs the one, 12341now. 12342 12343(2.5) Make it possible to select method of bios restoring after S3 12344resume. [=> no more ugly ifdefs] (Pavel Machek) 12345 12346(2.5) Make proc write interfaces work (Pavel Machek) 12347 12348(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 12349 12350(2.5) Break out ACPI Perf code into its own module, under cpufreq 12351(Dominik Brodowski) 12352 12353(2.4) S4BIOS support (Ducrot Bruno) 12354 12355(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 12356Visinoni) 12357 12358 123593) iASL Compiler: 12360 12361Added support to disassemble SSDT and PSDTs. 12362 12363Implemented support to obtain SSDTs from the Windows registry if 12364available. 12365 12366 12367---------------------------------------- 1236809 January 2003. Summary of changes for version 20030109. 12369 123701) ACPI CA Core Subsystem: 12371 12372Changed the behavior of the internal Buffer-to-String conversion 12373function. The current ACPI specification states that the contents 12374of the buffer are "converted to a string of two-character 12375hexadecimal numbers, each separated by a space". Unfortunately, 12376this definition is not backwards compatible with existing ACPI 1.0 12377implementations (although the behavior was not defined in the ACPI 123781.0 specification). The new behavior simply copies data from the 12379buffer to the string until a null character is found or the end of 12380the buffer is reached. The new String object is always null 12381terminated. This problem was seen during the generation of _BIF 12382battery data where incorrect strings were returned for battery 12383type, etc. This will also require an errata to the ACPI 12384specification. 12385 12386Renamed all instances of NATIVE_UINT and NATIVE_INT to 12387ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 12388 12389Copyright in all module headers (both Linux and non-Linux) has be 12390updated to 2003. 12391 12392Code and Data Size: Current core subsystem library sizes are shown 12393below. These are the code and data sizes for the acpica.lib 12394produced by the Microsoft Visual C++ 6.0 compiler, and these 12395values do not include any ACPI driver or OSPM code. The debug 12396version of the code includes the debug output trace mechanism and 12397has a much larger code and data size. Note that these values will 12398vary depending on the efficiency of the compiler and the compiler 12399options used during generation. 12400 12401 Previous Release 12402 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12403 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12404 Current Release: 12405 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12406 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12407 12408 124092) Linux 12410 12411Fixed an oops on module insertion/removal (Matthew Tippett) 12412 12413(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 12414 12415(2.5) Replace pr_debug (Randy Dunlap) 12416 12417(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 12418 12419(Both) Eliminate spawning of thread from timer callback, in favor 12420of schedule_work() 12421 12422(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 12423 12424(Both) Added define for Fixed Function HW region (Matthew Wilcox) 12425 12426(Both) Add missing statics to button.c (Pavel Machek) 12427 12428Several changes have been made to the source code translation 12429utility that generates the Linux Code in order to make the code 12430more "Linux-like": 12431 12432All typedefs on structs and unions have been removed in keeping 12433with the Linux coding style. 12434 12435Removed the non-Linux SourceSafe module revision number from each 12436module header. 12437 12438Completed major overhaul of symbols to be lowercased for linux. 12439Doubled the number of symbols that are lowercased. 12440 12441Fixed a problem where identifiers within procedure headers and 12442within quotes were not fully lower cased (they were left with a 12443starting capital.) 12444 12445Some C macros whose only purpose is to allow the generation of 16- 12446bit code are now completely removed in the Linux code, increasing 12447readability and maintainability. 12448 12449---------------------------------------- 12450 1245112 December 2002. Summary of changes for version 20021212. 12452 12453 124541) ACPI CA Core Subsystem: 12455 12456Fixed a problem where the creation of a zero-length AML Buffer 12457would cause a fault. 12458 12459Fixed a problem where a Buffer object that pointed to a static AML 12460buffer (in an ACPI table) could inadvertently be deleted, causing 12461memory corruption. 12462 12463Fixed a problem where a user buffer (passed in to the external 12464ACPI CA interfaces) could be overwritten if the buffer was too 12465small to complete the operation, causing memory corruption. 12466 12467Fixed a problem in the Buffer-to-String conversion code where a 12468string of length one was always returned, regardless of the size 12469of the input Buffer object. 12470 12471Removed the NATIVE_CHAR data type across the entire source due to 12472lack of need and lack of consistent use. 12473 12474Code and Data Size: Current core subsystem library sizes are shown 12475below. These are the code and data sizes for the acpica.lib 12476produced by the Microsoft Visual C++ 6.0 compiler, and these 12477values do not include any ACPI driver or OSPM code. The debug 12478version of the code includes the debug output trace mechanism and 12479has a much larger code and data size. Note that these values will 12480vary depending on the efficiency of the compiler and the compiler 12481options used during generation. 12482 12483 Previous Release 12484 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12485 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12486 Current Release: 12487 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12488 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12489 12490 12491---------------------------------------- 1249205 December 2002. Summary of changes for version 20021205. 12493 124941) ACPI CA Core Subsystem: 12495 12496Fixed a problem where a store to a String or Buffer object could 12497cause corruption of the DSDT if the object type being stored was 12498the same as the target object type and the length of the object 12499being stored was equal to or smaller than the original (existing) 12500target object. This was seen to cause corruption of battery _BIF 12501buffers if the _BIF method modified the buffer on the fly. 12502 12503Fixed a problem where an internal error was generated if a control 12504method invocation was used in an OperationRegion, Buffer, or 12505Package declaration. This was caused by the deferred parsing of 12506the control method and thus the deferred creation of the internal 12507method object. The solution to this problem was to create the 12508internal method object at the moment the method is encountered in 12509the first pass - so that subsequent references to the method will 12510able to obtain the required parameter count and thus properly 12511parse the method invocation. This problem presented itself as an 12512AE_AML_INTERNAL during the pass 1 parse phase during table load. 12513 12514Fixed a problem where the internal String object copy routine did 12515not always allocate sufficient memory for the target String object 12516and caused memory corruption. This problem was seen to cause 12517"Allocation already present in list!" errors as memory allocation 12518became corrupted. 12519 12520Implemented a new function for the evaluation of namespace objects 12521that allows the specification of the allowable return object 12522types. This simplifies a lot of code that checks for a return 12523object of one or more specific objects returned from the 12524evaluation (such as _STA, etc.) This may become and external 12525function if it would be useful to ACPI-related drivers. 12526 12527Completed another round of prefixing #defines with "ACPI_" for 12528clarity. 12529 12530Completed additional code restructuring to allow more modular 12531linking for iASL compiler and AcpiExec. Several files were split 12532creating new files. New files: nsparse.c dsinit.c evgpe.c 12533 12534Implemented an abort mechanism to terminate an executing control 12535method via the AML debugger. This feature is useful for debugging 12536control methods that depend (wait) for specific hardware 12537responses. 12538 12539Code and Data Size: Current core subsystem library sizes are shown 12540below. These are the code and data sizes for the acpica.lib 12541produced by the Microsoft Visual C++ 6.0 compiler, and these 12542values do not include any ACPI driver or OSPM code. The debug 12543version of the code includes the debug output trace mechanism and 12544has a much larger code and data size. Note that these values will 12545vary depending on the efficiency of the compiler and the compiler 12546options used during generation. 12547 12548 Previous Release 12549 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12550 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12551 Current Release: 12552 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12553 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12554 12555 125562) iASL Compiler/Disassembler 12557 12558Fixed a compiler code generation problem for "Interrupt" Resource 12559Descriptors. If specified in the ASL, the optional "Resource 12560Source Index" and "Resource Source" fields were not inserted into 12561the correct location within the AML resource descriptor, creating 12562an invalid descriptor. 12563 12564Fixed a disassembler problem for "Interrupt" resource descriptors. 12565The optional "Resource Source Index" and "Resource Source" fields 12566were ignored. 12567 12568 12569---------------------------------------- 1257022 November 2002. Summary of changes for version 20021122. 12571 12572 125731) ACPI CA Core Subsystem: 12574 12575Fixed a reported problem where an object stored to a Method Local 12576or Arg was not copied to a new object during the store - the 12577object pointer was simply copied to the Local/Arg. This caused 12578all subsequent operations on the Local/Arg to also affect the 12579original source of the store operation. 12580 12581Fixed a problem where a store operation to a Method Local or Arg 12582was not completed properly if the Local/Arg contained a reference 12583(from RefOf) to a named field. The general-purpose store-to- 12584namespace-node code is now used so that this case is handled 12585automatically. 12586 12587Fixed a problem where the internal object copy routine would cause 12588a protection fault if the object being copied was a Package and 12589contained either 1) a NULL package element or 2) a nested sub- 12590package. 12591 12592Fixed a problem with the GPE initialization that resulted from an 12593ambiguity in the ACPI specification. One section of the 12594specification states that both the address and length of the GPE 12595block must be zero if the block is not supported. Another section 12596implies that only the address need be zero if the block is not 12597supported. The code has been changed so that both the address and 12598the length must be non-zero to indicate a valid GPE block (i.e., 12599if either the address or the length is zero, the GPE block is 12600invalid.) 12601 12602Code and Data Size: Current core subsystem library sizes are shown 12603below. These are the code and data sizes for the acpica.lib 12604produced by the Microsoft Visual C++ 6.0 compiler, and these 12605values do not include any ACPI driver or OSPM code. The debug 12606version of the code includes the debug output trace mechanism and 12607has a much larger code and data size. Note that these values will 12608vary depending on the efficiency of the compiler and the compiler 12609options used during generation. 12610 12611 Previous Release 12612 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12613 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12614 Current Release: 12615 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12616 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12617 12618 126192) Linux 12620 12621Cleaned up EC driver. Exported an external EC read/write 12622interface. By going through this, other drivers (most notably 12623sonypi) will be able to serialize access to the EC. 12624 12625 126263) iASL Compiler/Disassembler 12627 12628Implemented support to optionally generate include files for both 12629ASM and C (the -i switch). This simplifies BIOS development by 12630automatically creating include files that contain external 12631declarations for the symbols that are created within the 12632 12633(optionally generated) ASM and C AML source files. 12634 12635 12636---------------------------------------- 1263715 November 2002. Summary of changes for version 20021115. 12638 126391) ACPI CA Core Subsystem: 12640 12641Fixed a memory leak problem where an error during resolution of 12642 12643method arguments during a method invocation from another method 12644failed to cleanup properly by deleting all successfully resolved 12645argument objects. 12646 12647Fixed a problem where the target of the Index() operator was not 12648correctly constructed if the source object was a package. This 12649problem has not been detected because the use of a target operand 12650with Index() is very rare. 12651 12652Fixed a problem with the Index() operator where an attempt was 12653made to delete the operand objects twice. 12654 12655Fixed a problem where an attempt was made to delete an operand 12656twice during execution of the CondRefOf() operator if the target 12657did not exist. 12658 12659Implemented the first of perhaps several internal create object 12660functions that create and initialize a specific object type. This 12661consolidates duplicated code wherever the object is created, thus 12662shrinking the size of the subsystem. 12663 12664Implemented improved debug/error messages for errors that occur 12665during nested method invocations. All executing method pathnames 12666are displayed (with the error) as the call stack is unwound - thus 12667simplifying debug. 12668 12669Fixed a problem introduced in the 10/02 release that caused 12670premature deletion of a buffer object if a buffer was used as an 12671ASL operand where an integer operand is required (Thus causing an 12672implicit object conversion from Buffer to Integer.) The change in 12673the 10/02 release was attempting to fix a memory leak (albeit 12674incorrectly.) 12675 12676Code and Data Size: Current core subsystem library sizes are shown 12677below. These are the code and data sizes for the acpica.lib 12678produced by the Microsoft Visual C++ 6.0 compiler, and these 12679values do not include any ACPI driver or OSPM code. The debug 12680version of the code includes the debug output trace mechanism and 12681has a much larger code and data size. Note that these values will 12682vary depending on the efficiency of the compiler and the compiler 12683options used during generation. 12684 12685 Previous Release 12686 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12687 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12688 Current Release: 12689 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12690 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12691 12692 126932) Linux 12694 12695Changed the implementation of the ACPI semaphores to use down() 12696instead of down_interruptable(). It is important that the 12697execution of ACPI control methods not be interrupted by signals. 12698Methods must run to completion, or the system may be left in an 12699unknown/unstable state. 12700 12701Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 12702(Shawn Starr) 12703 12704 127053) iASL Compiler/Disassembler 12706 12707 12708Changed the default location of output files. All output files 12709are now placed in the current directory by default instead of in 12710the directory of the source file. This change may affect some 12711existing makefiles, but it brings the behavior of the compiler in 12712line with other similar tools. The location of the output files 12713can be overridden with the -p command line switch. 12714 12715 12716---------------------------------------- 1271711 November 2002. Summary of changes for version 20021111. 12718 12719 127200) ACPI Specification 2.0B is released and is now available at: 12721http://www.acpi.info/index.html 12722 12723 127241) ACPI CA Core Subsystem: 12725 12726Implemented support for the ACPI 2.0 SMBus Operation Regions. 12727This includes the early detection and handoff of the request to 12728the SMBus region handler (avoiding all of the complex field 12729support code), and support for the bidirectional return packet 12730from an SMBus write operation. This paves the way for the 12731development of SMBus drivers in each host operating system. 12732 12733Fixed a problem where the semaphore WAIT_FOREVER constant was 12734defined as 32 bits, but must be 16 bits according to the ACPI 12735specification. This had the side effect of causing ASL 12736Mutex/Event timeouts even though the ASL code requested a wait 12737forever. Changed all internal references to the ACPI timeout 12738parameter to 16 bits to prevent future problems. Changed the name 12739of WAIT_FOREVER to ACPI_WAIT_FOREVER. 12740 12741Code and Data Size: Current core subsystem library sizes are shown 12742below. These are the code and data sizes for the acpica.lib 12743produced by the Microsoft Visual C++ 6.0 compiler, and these 12744values do not include any ACPI driver or OSPM code. The debug 12745version of the code includes the debug output trace mechanism and 12746has a much larger code and data size. Note that these values will 12747vary depending on the efficiency of the compiler and the compiler 12748options used during generation. 12749 12750 Previous Release 12751 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12752 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12753 Current Release: 12754 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12755 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12756 12757 127582) Linux 12759 12760Module loading/unloading fixes (John Cagle) 12761 12762 127633) iASL Compiler/Disassembler 12764 12765Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 12766 12767Implemented support for the disassembly of all SMBus protocol 12768keywords (SMBQuick, SMBWord, etc.) 12769 12770---------------------------------------- 1277101 November 2002. Summary of changes for version 20021101. 12772 12773 127741) ACPI CA Core Subsystem: 12775 12776Fixed a problem where platforms that have a GPE1 block but no GPE0 12777block were not handled correctly. This resulted in a "GPE 12778overlap" error message. GPE0 is no longer required. 12779 12780Removed code added in the previous release that inserted nodes 12781into the namespace in alphabetical order. This caused some side- 12782effects on various machines. The root cause of the problem is 12783still under investigation since in theory, the internal ordering 12784of the namespace nodes should not matter. 12785 12786 12787Enhanced error reporting for the case where a named object is not 12788found during control method execution. The full ACPI namepath 12789(name reference) of the object that was not found is displayed in 12790this case. 12791 12792Note: as a result of the overhaul of the namespace object types in 12793the previous release, the namespace nodes for the predefined 12794scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 12795instead of ACPI_TYPE_ANY. This simplifies the namespace 12796management code but may affect code that walks the namespace tree 12797looking for specific object types. 12798 12799Code and Data Size: Current core subsystem library sizes are shown 12800below. These are the code and data sizes for the acpica.lib 12801produced by the Microsoft Visual C++ 6.0 compiler, and these 12802values do not include any ACPI driver or OSPM code. The debug 12803version of the code includes the debug output trace mechanism and 12804has a much larger code and data size. Note that these values will 12805vary depending on the efficiency of the compiler and the compiler 12806options used during generation. 12807 12808 Previous Release 12809 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12810 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12811 Current Release: 12812 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12813 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12814 12815 128162) Linux 12817 12818Fixed a problem introduced in the previous release where the 12819Processor and Thermal objects were not recognized and installed in 12820/proc. This was related to the scope type change described above. 12821 12822 128233) iASL Compiler/Disassembler 12824 12825Implemented the -g option to get all of the required ACPI tables 12826from the registry and save them to files (Windows version of the 12827compiler only.) The required tables are the FADT, FACS, and DSDT. 12828 12829Added ACPI table checksum validation during table disassembly in 12830order to catch corrupted tables. 12831 12832 12833---------------------------------------- 1283422 October 2002. Summary of changes for version 20021022. 12835 128361) ACPI CA Core Subsystem: 12837 12838Implemented a restriction on the Scope operator that the target 12839must already exist in the namespace at the time the operator is 12840encountered (during table load or method execution). In other 12841words, forward references are not allowed and Scope() cannot 12842create a new object. This changes the previous behavior where the 12843interpreter would create the name if not found. This new behavior 12844correctly enables the search-to-root algorithm during namespace 12845lookup of the target name. Because of this upsearch, this fixes 12846the known Compaq _SB_.OKEC problem and makes both the AML 12847interpreter and iASL compiler compatible with other ACPI 12848implementations. 12849 12850Completed a major overhaul of the internal ACPI object types for 12851the ACPI Namespace and the associated operand objects. Many of 12852these types had become obsolete with the introduction of the two- 12853pass namespace load. This cleanup simplifies the code and makes 12854the entire namespace load mechanism much clearer and easier to 12855understand. 12856 12857Improved debug output for tracking scope opening/closing to help 12858diagnose scoping issues. The old scope name as well as the new 12859scope name are displayed. Also improved error messages for 12860problems with ASL Mutex objects and error messages for GPE 12861problems. 12862 12863Cleaned up the namespace dump code, removed obsolete code. 12864 12865All string output (for all namespace/object dumps) now uses the 12866common ACPI string output procedure which handles escapes properly 12867and does not emit non-printable characters. 12868 12869Fixed some issues with constants in the 64-bit version of the 12870local C library (utclib.c) 12871 12872 128732) Linux 12874 12875EC Driver: No longer attempts to acquire the Global Lock at 12876interrupt level. 12877 12878 128793) iASL Compiler/Disassembler 12880 12881Implemented ACPI 2.0B grammar change that disallows all Type 1 and 128822 opcodes outside of a control method. This means that the 12883"executable" operators (versus the "namespace" operators) cannot 12884be used at the table level; they can only be used within a control 12885method. 12886 12887Implemented the restriction on the Scope() operator where the 12888target must already exist in the namespace at the time the 12889operator is encountered (during ASL compilation). In other words, 12890forward references are not allowed and Scope() cannot create a new 12891object. This makes the iASL compiler compatible with other ACPI 12892implementations and makes the Scope() implementation adhere to the 12893ACPI specification. 12894 12895Fixed a problem where namepath optimization for the Alias operator 12896was optimizing the wrong path (of the two namepaths.) This caused 12897a "Missing alias link" error message. 12898 12899Fixed a problem where an "unknown reserved name" warning could be 12900incorrectly generated for names like "_SB" when the trailing 12901underscore is not used in the original ASL. 12902 12903Fixed a problem where the reserved name check did not handle 12904NamePaths with multiple NameSegs correctly. The first nameseg of 12905the NamePath was examined instead of the last NameSeg. 12906 12907 12908---------------------------------------- 12909 1291002 October 2002. Summary of changes for this release. 12911 12912 129131) ACPI CA Core Subsystem version 20021002: 12914 12915Fixed a problem where a store/copy of a string to an existing 12916string did not always set the string length properly in the String 12917object. 12918 12919Fixed a reported problem with the ToString operator where the 12920behavior was identical to the ToHexString operator instead of just 12921simply converting a raw buffer to a string data type. 12922 12923Fixed a problem where CopyObject and the other "explicit" 12924conversion operators were not updating the internal namespace node 12925type as part of the store operation. 12926 12927Fixed a memory leak during implicit source operand conversion 12928where the original object was not deleted if it was converted to a 12929new object of a different type. 12930 12931Enhanced error messages for all problems associated with namespace 12932lookups. Common procedure generates and prints the lookup name as 12933well as the formatted status. 12934 12935Completed implementation of a new design for the Alias support 12936within the namespace. The existing design did not handle the case 12937where a new object was assigned to one of the two names due to the 12938use of an explicit conversion operator, resulting in the two names 12939pointing to two different objects. The new design simply points 12940the Alias name to the original name node - not to the object. 12941This results in a level of indirection that must be handled in the 12942name resolution mechanism. 12943 12944Code and Data Size: Current core subsystem library sizes are shown 12945below. These are the code and data sizes for the acpica.lib 12946produced by the Microsoft Visual C++ 6.0 compiler, and these 12947values do not include any ACPI driver or OSPM code. The debug 12948version of the code includes the debug output trace mechanism and 12949has a larger code and data size. Note that these values will vary 12950depending on the efficiency of the compiler and the compiler 12951options used during generation. 12952 12953 Previous Release 12954 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12955 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12956 Current Release: 12957 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12958 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12959 12960 129612) Linux 12962 12963Initialize thermal driver's timer before it is used. (Knut 12964Neumann) 12965 12966Allow handling negative celsius values. (Kochi Takayoshi) 12967 12968Fix thermal management and make trip points. R/W (Pavel Machek) 12969 12970Fix /proc/acpi/sleep. (P. Christeas) 12971 12972IA64 fixes. (David Mosberger) 12973 12974Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 12975 12976Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 12977Brodowski) 12978 12979 129803) iASL Compiler/Disassembler 12981 12982Clarified some warning/error messages. 12983 12984 12985---------------------------------------- 1298618 September 2002. Summary of changes for this release. 12987 12988 129891) ACPI CA Core Subsystem version 20020918: 12990 12991Fixed a reported problem with reference chaining (via the Index() 12992and RefOf() operators) in the ObjectType() and SizeOf() operators. 12993The definition of these operators includes the dereferencing of 12994all chained references to return information on the base object. 12995 12996Fixed a problem with stores to indexed package elements - the 12997existing code would not complete the store if an "implicit 12998conversion" was not performed. In other words, if the existing 12999object (package element) was to be replaced completely, the code 13000didn't handle this case. 13001 13002Relaxed typechecking on the ASL "Scope" operator to allow the 13003target name to refer to an object of type Integer, String, or 13004Buffer, in addition to the scoping object types (Device, 13005predefined Scopes, Processor, PowerResource, and ThermalZone.) 13006This allows existing AML code that has workarounds for a bug in 13007Windows to function properly. A warning is issued, however. This 13008affects both the AML interpreter and the iASL compiler. Below is 13009an example of this type of ASL code: 13010 13011 Name(DEB,0x00) 13012 Scope(DEB) 13013 { 13014 13015Fixed some reported problems with 64-bit integer support in the 13016local implementation of C library functions (clib.c) 13017 13018 130192) Linux 13020 13021Use ACPI fix map region instead of IOAPIC region, since it is 13022undefined in non-SMP. 13023 13024Ensure that the SCI has the proper polarity and trigger, even on 13025systems that do not have an interrupt override entry in the MADT. 13026 130272.5 big driver reorganization (Pat Mochel) 13028 13029Use early table mapping code from acpitable.c (Andi Kleen) 13030 13031New blacklist entries (Andi Kleen) 13032 13033Blacklist improvements. Split blacklist code out into a separate 13034file. Move checking the blacklist to very early. Previously, we 13035would use ACPI tables, and then halfway through init, check the 13036blacklist -- too late. Now, it's early enough to completely fall- 13037back to non-ACPI. 13038 13039 130403) iASL Compiler/Disassembler version 20020918: 13041 13042Fixed a problem where the typechecking code didn't know that an 13043alias could point to a method. In other words, aliases were not 13044being dereferenced during typechecking. 13045 13046 13047---------------------------------------- 1304829 August 2002. Summary of changes for this release. 13049 130501) ACPI CA Core Subsystem Version 20020829: 13051 13052If the target of a Scope() operator already exists, it must be an 13053object type that actually opens a scope -- such as a Device, 13054Method, Scope, etc. This is a fatal runtime error. Similar error 13055check has been added to the iASL compiler also. 13056 13057Tightened up the namespace load to disallow multiple names in the 13058same scope. This previously was allowed if both objects were of 13059the same type. (i.e., a lookup was the same as entering a new 13060name). 13061 13062 130632) Linux 13064 13065Ensure that the ACPI interrupt has the proper trigger and 13066polarity. 13067 13068local_irq_disable is extraneous. (Matthew Wilcox) 13069 13070Make "acpi=off" actually do what it says, and not use the ACPI 13071interpreter *or* the tables. 13072 13073Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 13074Takayoshi) 13075 13076 130773) iASL Compiler/Disassembler Version 20020829: 13078 13079Implemented namepath optimization for name declarations. For 13080example, a declaration like "Method (\_SB_.ABCD)" would get 13081optimized to "Method (ABCD)" if the declaration is within the 13082\_SB_ scope. This optimization is in addition to the named 13083reference path optimization first released in the previous 13084version. This would seem to complete all possible optimizations 13085for namepaths within the ASL/AML. 13086 13087If the target of a Scope() operator already exists, it must be an 13088object type that actually opens a scope -- such as a Device, 13089Method, Scope, etc. 13090 13091Implemented a check and warning for unreachable code in the same 13092block below a Return() statement. 13093 13094Fixed a problem where the listing file was not generated if the 13095compiler aborted if the maximum error count was exceeded (200). 13096 13097Fixed a problem where the typechecking of method return values was 13098broken. This includes the check for a return value when the 13099method is invoked as a TermArg (a return value is expected.) 13100 13101Fixed a reported problem where EOF conditions during a quoted 13102string or comment caused a fault. 13103 13104 13105---------------------------------------- 1310615 August 2002. Summary of changes for this release. 13107 131081) ACPI CA Core Subsystem Version 20020815: 13109 13110Fixed a reported problem where a Store to a method argument that 13111contains a reference did not perform the indirect store correctly. 13112This problem was created during the conversion to the new 13113reference object model - the indirect store to a method argument 13114code was not updated to reflect the new model. 13115 13116Reworked the ACPI mode change code to better conform to ACPI 2.0, 13117handle corner cases, and improve code legibility (Kochi Takayoshi) 13118 13119Fixed a problem with the pathname parsing for the carat (^) 13120prefix. The heavy use of the carat operator by the new namepath 13121optimization in the iASL compiler uncovered a problem with the AML 13122interpreter handling of this prefix. In the case where one or 13123more carats precede a single nameseg, the nameseg was treated as 13124standalone and the search rule (to root) was inadvertently 13125applied. This could cause both the iASL compiler and the 13126interpreter to find the wrong object or to miss the error that 13127should occur if the object does not exist at that exact pathname. 13128 13129Found and fixed the problem where the HP Pavilion DSDT would not 13130load. This was a relatively minor tweak to the table loading code 13131(a problem caused by the unexpected encounter with a method 13132invocation not within a control method), but it does not solve the 13133overall issue of the execution of AML code at the table level. 13134This investigation is still ongoing. 13135 13136Code and Data Size: Current core subsystem library sizes are shown 13137below. These are the code and data sizes for the acpica.lib 13138produced by the Microsoft Visual C++ 6.0 compiler, and these 13139values do not include any ACPI driver or OSPM code. The debug 13140version of the code includes the debug output trace mechanism and 13141has a larger code and data size. Note that these values will vary 13142depending on the efficiency of the compiler and the compiler 13143options used during generation. 13144 13145 Previous Release 13146 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13147 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13148 Current Release: 13149 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13150 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13151 13152 131532) Linux 13154 13155Remove redundant slab.h include (Brad Hards) 13156 13157Fix several bugs in thermal.c (Herbert Nachtnebel) 13158 13159Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 13160 13161Change acpi_system_suspend to use updated irq functions (Pavel 13162Machek) 13163 13164Export acpi_get_firmware_table (Matthew Wilcox) 13165 13166Use proper root proc entry for ACPI (Kochi Takayoshi) 13167 13168Fix early-boot table parsing (Bjorn Helgaas) 13169 13170 131713) iASL Compiler/Disassembler 13172 13173Reworked the compiler options to make them more consistent and to 13174use two-letter options where appropriate. We were running out of 13175sensible letters. This may break some makefiles, so check the 13176current options list by invoking the compiler with no parameters. 13177 13178Completed the design and implementation of the ASL namepath 13179optimization option for the compiler. This option optimizes all 13180references to named objects to the shortest possible path. The 13181first attempt tries to utilize a single nameseg (4 characters) and 13182the "search-to-root" algorithm used by the interpreter. If that 13183cannot be used (because either the name is not in the search path 13184or there is a conflict with another object with the same name), 13185the pathname is optimized using the carat prefix (usually a 13186shorter string than specifying the entire path from the root.) 13187 13188Implemented support to obtain the DSDT from the Windows registry 13189(when the disassembly option is specified with no input file). 13190Added this code as the implementation for AcpiOsTableOverride in 13191the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 13192utility) to scan memory for the DSDT to the AcpiOsTableOverride 13193function in the DOS OSL to make the disassembler truly OS 13194independent. 13195 13196Implemented a new option to disassemble and compile in one step. 13197When used without an input filename, this option will grab the 13198DSDT from the local machine, disassemble it, and compile it in one 13199step. 13200 13201Added a warning message for invalid escapes (a backslash followed 13202by any character other than the allowable escapes). This catches 13203the quoted string error "\_SB_" (which should be "\\_SB_" ). 13204 13205Also, there are numerous instances in the ACPI specification where 13206this error occurs. 13207 13208Added a compiler option to disable all optimizations. This is 13209basically the "compatibility mode" because by using this option, 13210the AML code will come out exactly the same as other ASL 13211compilers. 13212 13213Added error messages for incorrectly ordered dependent resource 13214functions. This includes: missing EndDependentFn macro at end of 13215dependent resource list, nested dependent function macros (both 13216start and end), and missing StartDependentFn macro. These are 13217common errors that should be caught at compile time. 13218 13219Implemented _OSI support for the disassembler and compiler. _OSI 13220must be included in the namespace for proper disassembly (because 13221the disassembler must know the number of arguments.) 13222 13223Added an "optimization" message type that is optional (off by 13224default). This message is used for all optimizations - including 13225constant folding, integer optimization, and namepath optimization. 13226 13227---------------------------------------- 1322825 July 2002. Summary of changes for this release. 13229 13230 132311) ACPI CA Core Subsystem Version 20020725: 13232 13233The AML Disassembler has been enhanced to produce compilable ASL 13234code and has been integrated into the iASL compiler (see below) as 13235well as the single-step disassembly for the AML debugger and the 13236disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 13237resource templates and macros are fully supported. The 13238disassembler has been tested on over 30 different AML files, 13239producing identical AML when the resulting disassembled ASL file 13240is recompiled with the same ASL compiler. 13241 13242Modified the Resource Manager to allow zero interrupts and zero 13243dma channels during the GetCurrentResources call. This was 13244causing problems on some platforms. 13245 13246Added the AcpiOsRedirectOutput interface to the OSL to simplify 13247output redirection for the AcpiOsPrintf and AcpiOsVprintf 13248interfaces. 13249 13250Code and Data Size: Current core subsystem library sizes are shown 13251below. These are the code and data sizes for the acpica.lib 13252produced by the Microsoft Visual C++ 6.0 compiler, and these 13253values do not include any ACPI driver or OSPM code. The debug 13254version of the code includes the debug output trace mechanism and 13255has a larger code and data size. Note that these values will vary 13256depending on the efficiency of the compiler and the compiler 13257options used during generation. 13258 13259 Previous Release 13260 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13261 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13262 Current Release: 13263 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13264 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13265 13266 132672) Linux 13268 13269Fixed a panic in the EC driver (Dominik Brodowski) 13270 13271Implemented checksum of the R/XSDT itself during Linux table scan 13272(Richard Schaal) 13273 13274 132753) iASL compiler 13276 13277The AML disassembler is integrated into the compiler. The "-d" 13278option invokes the disassembler to completely disassemble an 13279input AML file, producing as output a text ASL file with the 13280extension ".dsl" (to avoid name collisions with existing .asl 13281source files.) A future enhancement will allow the disassembler 13282to obtain the BIOS DSDT from the registry under Windows. 13283 13284Fixed a problem with the VendorShort and VendorLong resource 13285descriptors where an invalid AML sequence was created. 13286 13287Implemented a fix for BufferData term in the ASL parser. It was 13288inadvertently defined twice, allowing invalid syntax to pass and 13289causing reduction conflicts. 13290 13291Fixed a problem where the Ones opcode could get converted to a 13292value of zero if "Ones" was used where a byte, word or dword value 13293was expected. The 64-bit value is now truncated to the correct 13294size with the correct value. 13295 13296 13297 13298---------------------------------------- 1329902 July 2002. Summary of changes for this release. 13300 13301 133021) ACPI CA Core Subsystem Version 20020702: 13303 13304The Table Manager code has been restructured to add several new 13305features. Tables that are not required by the core subsystem 13306(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 13307validated in any way and are returned from AcpiGetFirmwareTable if 13308requested. The AcpiOsTableOverride interface is now called for 13309each table that is loaded by the subsystem in order to allow the 13310host to override any table it chooses. Previously, only the DSDT 13311could be overridden. Added one new files, tbrsdt.c and 13312tbgetall.c. 13313 13314Fixed a problem with the conversion of internal package objects to 13315external objects (when a package is returned from a control 13316method.) The return buffer length was set to zero instead of the 13317proper length of the package object. 13318 13319Fixed a reported problem with the use of the RefOf and DeRefOf 13320operators when passing reference arguments to control methods. A 13321new type of Reference object is used internally for references 13322produced by the RefOf operator. 13323 13324Added additional error messages in the Resource Manager to explain 13325AE_BAD_DATA errors when they occur during resource parsing. 13326 13327Split the AcpiEnableSubsystem into two primitives to enable a 13328finer granularity initialization sequence. These two calls should 13329be called in this order: AcpiEnableSubsystem (flags), 13330AcpiInitializeObjects (flags). The flags parameter remains the 13331same. 13332 13333 133342) Linux 13335 13336Updated the ACPI utilities module to understand the new style of 13337fully resolved package objects that are now returned from the core 13338subsystem. This eliminates errors of the form: 13339 13340 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 13341 acpi_utils-0430 [145] acpi_evaluate_reference: 13342 Invalid element in package (not a device reference) 13343 13344The method evaluation utility uses the new buffer allocation 13345scheme instead of calling AcpiEvaluate Object twice. 13346 13347Added support for ECDT. This allows the use of the Embedded 13348 13349Controller before the namespace has been fully initialized, which 13350is necessary for ACPI 2.0 support, and for some laptops to 13351initialize properly. (Laptops using ECDT are still rare, so only 13352limited testing was performed of the added functionality.) 13353 13354Fixed memory leaks in the EC driver. 13355 13356Eliminated a brittle code structure in acpi_bus_init(). 13357 13358Eliminated the acpi_evaluate() helper function in utils.c. It is 13359no longer needed since acpi_evaluate_object can optionally 13360allocate memory for the return object. 13361 13362Implemented fix for keyboard hang when getting battery readings on 13363some systems (Stephen White) 13364 13365PCI IRQ routing update (Dominik Brodowski) 13366 13367Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 13368support 13369 13370---------------------------------------- 1337111 June 2002. Summary of changes for this release. 13372 13373 133741) ACPI CA Core Subsystem Version 20020611: 13375 13376Fixed a reported problem where constants such as Zero and One 13377appearing within _PRT packages were not handled correctly within 13378the resource manager code. Originally reported against the ASL 13379compiler because the code generator now optimizes integers to 13380their minimal AML representation (i.e. AML constants if possible.) 13381The _PRT code now handles all AML constant opcodes correctly 13382(Zero, One, Ones, Revision). 13383 13384Fixed a problem with the Concatenate operator in the AML 13385interpreter where a buffer result object was incorrectly marked as 13386not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 13387 13388All package sub-objects are now fully resolved before they are 13389returned from the external ACPI interfaces. This means that name 13390strings are resolved to object handles, and constant operators 13391(Zero, One, Ones, Revision) are resolved to Integers. 13392 13393Implemented immediate resolution of the AML Constant opcodes 13394(Zero, One, Ones, Revision) to Integer objects upon detection 13395within the AML stream. This has simplified and reduced the 13396generated code size of the subsystem by eliminating about 10 13397switch statements for these constants (which previously were 13398contained in Reference objects.) The complicating issues are that 13399the Zero opcode is used as a "placeholder" for unspecified 13400optional target operands and stores to constants are defined to be 13401no-ops. 13402 13403Code and Data Size: Current core subsystem library sizes are shown 13404below. These are the code and data sizes for the acpica.lib 13405produced by the Microsoft Visual C++ 6.0 compiler, and these 13406values do not include any ACPI driver or OSPM code. The debug 13407version of the code includes the debug output trace mechanism and 13408has a larger code and data size. Note that these values will vary 13409depending on the efficiency of the compiler and the compiler 13410options used during generation. 13411 13412 Previous Release 13413 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13414 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13415 Current Release: 13416 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13417 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13418 13419 134202) Linux 13421 13422 13423Added preliminary support for obtaining _TRA data for PCI root 13424bridges (Bjorn Helgaas). 13425 13426 134273) iASL Compiler Version X2046: 13428 13429Fixed a problem where the "_DDN" reserved name was defined to be a 13430control method with one argument. There are no arguments, and 13431_DDN does not have to be a control method. 13432 13433Fixed a problem with the Linux version of the compiler where the 13434source lines printed with error messages were the wrong lines. 13435This turned out to be the "LF versus CR/LF" difference between 13436Windows and Unix. This appears to be the longstanding issue 13437concerning listing output and error messages. 13438 13439Fixed a problem with the Linux version of compiler where opcode 13440names within error messages were wrong. This was caused by a 13441slight difference in the output of the Flex tool on Linux versus 13442Windows. 13443 13444Fixed a problem with the Linux compiler where the hex output files 13445contained some garbage data caused by an internal buffer overrun. 13446 13447 13448---------------------------------------- 1344917 May 2002. Summary of changes for this release. 13450 13451 134521) ACPI CA Core Subsystem Version 20020517: 13453 13454Implemented a workaround to an BIOS bug discovered on the HP 13455OmniBook where the FADT revision number and the table size are 13456inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 13457behavior is to fallback to using only the ACPI 1.0 fields of the 13458FADT if the table is too small to be a ACPI 2.0 table as claimed 13459by the revision number. Although this is a BIOS bug, this is a 13460case where the workaround is simple enough and with no side 13461effects, so it seemed prudent to add it. A warning message is 13462issued, however. 13463 13464Implemented minimum size checks for the fixed-length ACPI tables - 13465- the FADT and FACS, as well as consistency checks between the 13466revision number and the table size. 13467 13468Fixed a reported problem in the table override support where the 13469new table pointer was incorrectly treated as a physical address 13470instead of a logical address. 13471 13472Eliminated the use of the AE_AML_ERROR exception and replaced it 13473with more descriptive codes. 13474 13475Fixed a problem where an exception would occur if an ASL Field was 13476defined with no named Field Units underneath it (used by some 13477index fields). 13478 13479Code and Data Size: Current core subsystem library sizes are shown 13480below. These are the code and data sizes for the acpica.lib 13481produced by the Microsoft Visual C++ 6.0 compiler, and these 13482values do not include any ACPI driver or OSPM code. The debug 13483version of the code includes the debug output trace mechanism and 13484has a larger code and data size. Note that these values will vary 13485depending on the efficiency of the compiler and the compiler 13486options used during generation. 13487 13488 Previous Release 13489 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13490 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13491 Current Release: 13492 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13493 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13494 13495 13496 134972) Linux 13498 13499Much work done on ACPI init (MADT and PCI IRQ routing support). 13500(Paul D. and Dominik Brodowski) 13501 13502Fix PCI IRQ-related panic on boot (Sam Revitch) 13503 13504Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 13505 13506Fix "MHz" typo (Dominik Brodowski) 13507 13508Fix RTC year 2000 issue (Dominik Brodowski) 13509 13510Preclude multiple button proc entries (Eric Brunet) 13511 13512Moved arch-specific code out of include/platform/aclinux.h 13513 135143) iASL Compiler Version X2044: 13515 13516Implemented error checking for the string used in the EISAID macro 13517(Usually used in the definition of the _HID object.) The code now 13518strictly enforces the PnP format - exactly 7 characters, 3 13519uppercase letters and 4 hex digits. 13520 13521If a raw string is used in the definition of the _HID object 13522(instead of the EISAID macro), the string must contain all 13523alphanumeric characters (e.g., "*PNP0011" is not allowed because 13524of the asterisk.) 13525 13526Implemented checking for invalid use of ACPI reserved names for 13527most of the name creation operators (Name, Device, Event, Mutex, 13528OperationRegion, PowerResource, Processor, and ThermalZone.) 13529Previously, this check was only performed for control methods. 13530 13531Implemented an additional check on the Name operator to emit an 13532error if a reserved name that must be implemented in ASL as a 13533control method is used. We know that a reserved name must be a 13534method if it is defined with input arguments. 13535 13536The warning emitted when a namespace object reference is not found 13537during the cross reference phase has been changed into an error. 13538The "External" directive should be used for names defined in other 13539modules. 13540 13541 135424) Tools and Utilities 13543 13544The 16-bit tools (adump16 and aexec16) have been regenerated and 13545tested. 13546 13547Fixed a problem with the output of both acpidump and adump16 where 13548the indentation of closing parentheses and brackets was not 13549 13550aligned properly with the parent block. 13551 13552 13553---------------------------------------- 1355403 May 2002. Summary of changes for this release. 13555 13556 135571) ACPI CA Core Subsystem Version 20020503: 13558 13559Added support a new OSL interface that allows the host operating 13560 13561system software to override the DSDT found in the firmware - 13562AcpiOsTableOverride. With this interface, the OSL can examine the 13563version of the firmware DSDT and replace it with a different one 13564if desired. 13565 13566Added new external interfaces for accessing ACPI registers from 13567device drivers and other system software - AcpiGetRegister and 13568AcpiSetRegister. This was simply an externalization of the 13569existing AcpiHwBitRegister interfaces. 13570 13571Fixed a regression introduced in the previous build where the 13572ASL/AML CreateField operator always returned an error, 13573"destination must be a NS Node". 13574 13575Extended the maximum time (before failure) to successfully enable 13576ACPI mode to 3 seconds. 13577 13578Code and Data Size: Current core subsystem library sizes are shown 13579below. These are the code and data sizes for the acpica.lib 13580produced by the Microsoft Visual C++ 6.0 compiler, and these 13581values do not include any ACPI driver or OSPM code. The debug 13582version of the code includes the debug output trace mechanism and 13583has a larger code and data size. Note that these values will vary 13584depending on the efficiency of the compiler and the compiler 13585options used during generation. 13586 13587 Previous Release 13588 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13589 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13590 Current Release: 13591 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13592 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13593 13594 135952) Linux 13596 13597Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 13598free. While 3 out of 4 of our in-house systems work fine, the last 13599one still hangs when testing the LAPIC timer. 13600 13601Renamed many files in 2.5 kernel release to omit "acpi_" from the 13602name. 13603 13604Added warning on boot for Presario 711FR. 13605 13606Sleep improvements (Pavel Machek) 13607 13608ACPI can now be built without CONFIG_PCI enabled. 13609 13610IA64: Fixed memory map functions (JI Lee) 13611 13612 136133) iASL Compiler Version X2043: 13614 13615Added support to allow the compiler to be integrated into the MS 13616VC++ development environment for one-button compilation of single 13617files or entire projects -- with error-to-source-line mapping. 13618 13619Implemented support for compile-time constant folding for the 13620Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 13621specification. This allows the ASL writer to use expressions 13622instead of Integer/Buffer/String constants in terms that must 13623evaluate to constants at compile time and will also simplify the 13624emitted AML in any such sub-expressions that can be folded 13625(evaluated at compile-time.) This increases the size of the 13626compiler significantly because a portion of the ACPI CA AML 13627interpreter is included within the compiler in order to pre- 13628evaluate constant expressions. 13629 13630 13631Fixed a problem with the "Unicode" ASL macro that caused the 13632compiler to fault. (This macro is used in conjunction with the 13633_STR reserved name.) 13634 13635Implemented an AML opcode optimization to use the Zero, One, and 13636Ones opcodes where possible to further reduce the size of integer 13637constants and thus reduce the overall size of the generated AML 13638code. 13639 13640Implemented error checking for new reserved terms for ACPI version 136412.0A. 13642 13643Implemented the -qr option to display the current list of ACPI 13644reserved names known to the compiler. 13645 13646Implemented the -qc option to display the current list of ASL 13647operators that are allowed within constant expressions and can 13648therefore be folded at compile time if the operands are constants. 13649 13650 136514) Documentation 13652 13653Updated the Programmer's Reference for new interfaces, data types, 13654and memory allocation model options. 13655 13656Updated the iASL Compiler User Reference to apply new format and 13657add information about new features and options. 13658 13659---------------------------------------- 1366019 April 2002. Summary of changes for this release. 13661 136621) ACPI CA Core Subsystem Version 20020419: 13663 13664The source code base for the Core Subsystem has been completely 13665cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 13666versions. The Lint option files used are included in the 13667/acpi/generate/lint directory. 13668 13669Implemented enhanced status/error checking across the entire 13670Hardware manager subsystem. Any hardware errors (reported from 13671the OSL) are now bubbled up and will abort a running control 13672method. 13673 13674 13675Fixed a problem where the per-ACPI-table integer width (32 or 64) 13676was stored only with control method nodes, causing a fault when 13677non-control method code was executed during table loading. The 13678solution implemented uses a global variable to indicate table 13679width across the entire ACPI subsystem. Therefore, ACPI CA does 13680not support mixed integer widths across different ACPI tables 13681(DSDT, SSDT). 13682 13683Fixed a problem where NULL extended fields (X fields) in an ACPI 136842.0 ACPI FADT caused the table load to fail. Although the 13685existing ACPI specification is a bit fuzzy on this topic, the new 13686behavior is to fall back on a ACPI 1.0 field if the corresponding 13687ACPI 2.0 X field is zero (even though the table revision indicates 13688a full ACPI 2.0 table.) The ACPI specification will be updated to 13689clarify this issue. 13690 13691Fixed a problem with the SystemMemory operation region handler 13692where memory was always accessed byte-wise even if the AML- 13693specified access width was larger than a byte. This caused 13694problems on systems with memory-mapped I/O. Memory is now 13695accessed with the width specified. On systems that do not support 13696non-aligned transfers, a check is made to guarantee proper address 13697alignment before proceeding in order to avoid an AML-caused 13698alignment fault within the kernel. 13699 13700 13701Fixed a problem with the ExtendedIrq resource where only one byte 13702of the 4-byte Irq field was extracted. 13703 13704Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 13705function was out of date and required a rewrite. 13706 13707Code and Data Size: Current core subsystem library sizes are shown 13708below. These are the code and data sizes for the acpica.lib 13709produced by the Microsoft Visual C++ 6.0 compiler, and these 13710values do not include any ACPI driver or OSPM code. The debug 13711version of the code includes the debug output trace mechanism and 13712has a larger code and data size. Note that these values will vary 13713depending on the efficiency of the compiler and the compiler 13714options used during generation. 13715 13716 Previous Release 13717 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13718 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13719 Current Release: 13720 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13721 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13722 13723 137242) Linux 13725 13726PCI IRQ routing fixes (Dominik Brodowski) 13727 13728 137293) iASL Compiler Version X2042: 13730 13731Implemented an additional compile-time error check for a field 13732unit whose size + minimum access width would cause a run-time 13733access beyond the end-of-region. Previously, only the field size 13734itself was checked. 13735 13736The Core subsystem and iASL compiler now share a common parse 13737object in preparation for compile-time evaluation of the type 137383/4/5 ASL operators. 13739 13740 13741---------------------------------------- 13742Summary of changes for this release: 03_29_02 13743 137441) ACPI CA Core Subsystem Version 20020329: 13745 13746Implemented support for late evaluation of TermArg operands to 13747Buffer and Package objects. This allows complex expressions to be 13748used in the declarations of these object types. 13749 13750Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 137511.0, if the field was larger than 32 bits, it was returned as a 13752buffer - otherwise it was returned as an integer. In ACPI 2.0, 13753the field is returned as a buffer only if the field is larger than 1375464 bits. The TableRevision is now considered when making this 13755conversion to avoid incompatibility with existing ASL code. 13756 13757Implemented logical addressing for AcpiOsGetRootPointer. This 13758allows an RSDP with either a logical or physical address. With 13759this support, the host OS can now override all ACPI tables with 13760one logical RSDP. Includes implementation of "typed" pointer 13761support to allow a common data type for both physical and logical 13762pointers internally. This required a change to the 13763AcpiOsGetRootPointer interface. 13764 13765Implemented the use of ACPI 2.0 Generic Address Structures for all 13766GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 13767mapped I/O for these ACPI features. 13768 13769Initialization now ignores not only non-required tables (All 13770tables other than the FADT, FACS, DSDT, and SSDTs), but also does 13771not validate the table headers of unrecognized tables. 13772 13773Fixed a problem where a notify handler could only be 13774installed/removed on an object of type Device. All "notify" 13775 13776objects are now supported -- Devices, Processor, Power, and 13777Thermal. 13778 13779Removed most verbosity from the ACPI_DB_INFO debug level. Only 13780critical information is returned when this debug level is enabled. 13781 13782Code and Data Size: Current core subsystem library sizes are shown 13783below. These are the code and data sizes for the acpica.lib 13784produced by the Microsoft Visual C++ 6.0 compiler, and these 13785values do not include any ACPI driver or OSPM code. The debug 13786version of the code includes the debug output trace mechanism and 13787has a larger code and data size. Note that these values will vary 13788depending on the efficiency of the compiler and the compiler 13789options used during generation. 13790 13791 Previous Release 13792 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13793 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13794 Current Release: 13795 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13796 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13797 13798 137992) Linux: 13800 13801The processor driver (acpi_processor.c) now fully supports ACPI 138022.0-based processor performance control (e.g. Intel(R) 13803SpeedStep(TM) technology) Note that older laptops that only have 13804the Intel "applet" interface are not supported through this. The 13805'limit' and 'performance' interface (/proc) are fully functional. 13806[Note that basic policy for controlling performance state 13807transitions will be included in the next version of ospmd.] The 13808idle handler was modified to more aggressively use C2, and PIIX4 13809errata handling underwent a complete overhaul (big thanks to 13810Dominik Brodowski). 13811 13812Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 13813based devices in the ACPI namespace are now dynamically bound 13814(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 13815This allows, among other things, ACPI to resolve bus numbers for 13816subordinate PCI bridges. 13817 13818Enhanced PCI IRQ routing to get the proper bus number for _PRT 13819entries defined underneath PCI bridges. 13820 13821Added IBM 600E to bad bios list due to invalid _ADR value for 13822PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 13823 13824In the process of adding full MADT support (e.g. IOAPIC) for IA32 13825(acpi.c, mpparse.c) -- stay tuned. 13826 13827Added back visual differentiation between fixed-feature and 13828control-method buttons in dmesg. Buttons are also subtyped (e.g. 13829button/power/PWRF) to simplify button identification. 13830 13831We no longer use -Wno-unused when compiling debug. Please ignore 13832any "_THIS_MODULE defined but not used" messages. 13833 13834Can now shut down the system using "magic sysrq" key. 13835 13836 138373) iASL Compiler version 2041: 13838 13839Fixed a problem where conversion errors for hex/octal/decimal 13840constants were not reported. 13841 13842Implemented a fix for the General Register template Address field. 13843This field was 8 bits when it should be 64. 13844 13845Fixed a problem where errors/warnings were no longer being emitted 13846within the listing output file. 13847 13848Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 13849exactly 4 characters, alphanumeric only. 13850 13851 13852 13853 13854---------------------------------------- 13855Summary of changes for this release: 03_08_02 13856 13857 138581) ACPI CA Core Subsystem Version 20020308: 13859 13860Fixed a problem with AML Fields where the use of the "AccessAny" 13861keyword could cause an interpreter error due to attempting to read 13862or write beyond the end of the parent Operation Region. 13863 13864Fixed a problem in the SystemMemory Operation Region handler where 13865an attempt was made to map memory beyond the end of the region. 13866This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 13867errors on some Linux systems. 13868 13869Fixed a problem where the interpreter/namespace "search to root" 13870algorithm was not functioning for some object types. Relaxed the 13871internal restriction on the search to allow upsearches for all 13872external object types as well as most internal types. 13873 13874 138752) Linux: 13876 13877We now use safe_halt() macro versus individual calls to sti | hlt. 13878 13879Writing to the processor limit interface should now work. "echo 1" 13880will increase the limit, 2 will decrease, and 0 will reset to the 13881 13882default. 13883 13884 138853) ASL compiler: 13886 13887Fixed segfault on Linux version. 13888 13889 13890---------------------------------------- 13891Summary of changes for this release: 02_25_02 13892 138931) ACPI CA Core Subsystem: 13894 13895 13896Fixed a problem where the GPE bit masks were not initialized 13897properly, causing erratic GPE behavior. 13898 13899Implemented limited support for multiple calling conventions. The 13900code can be generated with either the VPL (variable parameter 13901list, or "C") convention, or the FPL (fixed parameter list, or 13902"Pascal") convention. The core subsystem is about 3.4% smaller 13903when generated with FPL. 13904 13905 139062) Linux 13907 13908Re-add some /proc/acpi/event functionality that was lost during 13909the rewrite 13910 13911Resolved issue with /proc events for fixed-feature buttons showing 13912up as the system device. 13913 13914Fixed checks on C2/C3 latencies to be inclusive of maximum values. 13915 13916Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 13917 13918Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 13919 13920Fixed limit interface & usage to fix bugs with passive cooling 13921hysterisis. 13922 13923Restructured PRT support. 13924 13925 13926---------------------------------------- 13927Summary of changes for this label: 02_14_02 13928 13929 139301) ACPI CA Core Subsystem: 13931 13932Implemented support in AcpiLoadTable to allow loading of FACS and 13933FADT tables. 13934 13935Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 13936been removed. All 64-bit platforms should be migrated to the ACPI 139372.0 tables. The actbl71.h header has been removed from the source 13938tree. 13939 13940All C macros defined within the subsystem have been prefixed with 13941"ACPI_" to avoid collision with other system include files. 13942 13943Removed the return value for the two AcpiOsPrint interfaces, since 13944it is never used and causes lint warnings for ignoring the return 13945value. 13946 13947Added error checking to all internal mutex acquire and release 13948calls. Although a failure from one of these interfaces is 13949probably a fatal system error, these checks will cause the 13950immediate abort of the currently executing method or interface. 13951 13952Fixed a problem where the AcpiSetCurrentResources interface could 13953fault. This was a side effect of the deployment of the new memory 13954allocation model. 13955 13956Fixed a couple of problems with the Global Lock support introduced 13957in the last major build. The "common" (1.0/2.0) internal FACS was 13958being overwritten with the FACS signature and clobbering the 13959Global Lock pointer. Also, the actual firmware FACS was being 13960unmapped after construction of the "common" FACS, preventing 13961access to the actual Global Lock field within it. The "common" 13962internal FACS is no longer installed as an actual ACPI table; it 13963is used simply as a global. 13964 13965Code and Data Size: Current core subsystem library sizes are shown 13966below. These are the code and data sizes for the acpica.lib 13967produced by the Microsoft Visual C++ 6.0 compiler, and these 13968values do not include any ACPI driver or OSPM code. The debug 13969version of the code includes the debug output trace mechanism and 13970has a larger code and data size. Note that these values will vary 13971depending on the efficiency of the compiler and the compiler 13972options used during generation. 13973 13974 Previous Release (02_07_01) 13975 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13976 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13977 Current Release: 13978 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13979 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13980 13981 139822) Linux 13983 13984Updated Linux-specific code for core macro and OSL interface 13985changes described above. 13986 13987Improved /proc/acpi/event. It now can be opened only once and has 13988proper poll functionality. 13989 13990Fixed and restructured power management (acpi_bus). 13991 13992Only create /proc "view by type" when devices of that class exist. 13993 13994Fixed "charging/discharging" bug (and others) in acpi_battery. 13995 13996Improved thermal zone code. 13997 13998 139993) ASL Compiler, version X2039: 14000 14001 14002Implemented the new compiler restriction on ASL String hex/octal 14003escapes to non-null, ASCII values. An error results if an invalid 14004value is used. (This will require an ACPI 2.0 specification 14005change.) 14006 14007AML object labels that are output to the optional C and ASM source 14008are now prefixed with both the ACPI table signature and table ID 14009to help guarantee uniqueness within a large BIOS project. 14010 14011 14012---------------------------------------- 14013Summary of changes for this label: 02_01_02 14014 140151) ACPI CA Core Subsystem: 14016 14017ACPI 2.0 support is complete in the entire Core Subsystem and the 14018ASL compiler. All new ACPI 2.0 operators are implemented and all 14019other changes for ACPI 2.0 support are complete. With 14020simultaneous code and data optimizations throughout the subsystem, 14021ACPI 2.0 support has been implemented with almost no additional 14022cost in terms of code and data size. 14023 14024Implemented a new mechanism for allocation of return buffers. If 14025the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 14026be allocated on behalf of the caller. Consolidated all return 14027buffer validation and allocation to a common procedure. Return 14028buffers will be allocated via the primary OSL allocation interface 14029since it appears that a separate pool is not needed by most users. 14030If a separate pool is required for these buffers, the caller can 14031still use the original mechanism and pre-allocate the buffer(s). 14032 14033Implemented support for string operands within the DerefOf 14034operator. 14035 14036Restructured the Hardware and Event managers to be table driven, 14037simplifying the source code and reducing the amount of generated 14038code. 14039 14040Split the common read/write low-level ACPI register bitfield 14041procedure into a separate read and write, simplifying the code 14042considerably. 14043 14044Obsoleted the AcpiOsCallocate OSL interface. This interface was 14045used only a handful of times and didn't have enough critical mass 14046for a separate interface. Replaced with a common calloc procedure 14047in the core. 14048 14049Fixed a reported problem with the GPE number mapping mechanism 14050that allows GPE1 numbers to be non-contiguous with GPE0. 14051Reorganized the GPE information and shrunk a large array that was 14052originally large enough to hold info for all possible GPEs (256) 14053to simply large enough to hold all GPEs up to the largest GPE 14054number on the machine. 14055 14056Fixed a reported problem with resource structure alignment on 64- 14057bit platforms. 14058 14059Changed the AcpiEnableEvent and AcpiDisableEvent external 14060interfaces to not require any flags for the common case of 14061enabling/disabling a GPE. 14062 14063Implemented support to allow a "Notify" on a Processor object. 14064 14065Most TBDs in comments within the source code have been resolved 14066and eliminated. 14067 14068 14069Fixed a problem in the interpreter where a standalone parent 14070prefix (^) was not handled correctly in the interpreter and 14071debugger. 14072 14073Removed obsolete and unnecessary GPE save/restore code. 14074 14075Implemented Field support in the ASL Load operator. This allows a 14076table to be loaded from a named field, in addition to loading a 14077table directly from an Operation Region. 14078 14079Implemented timeout and handle support in the external Global Lock 14080interfaces. 14081 14082Fixed a problem in the AcpiDump utility where pathnames were no 14083longer being generated correctly during the dump of named objects. 14084 14085Modified the AML debugger to give a full display of if/while 14086predicates instead of just one AML opcode at a time. (The 14087predicate can have several nested ASL statements.) The old method 14088was confusing during single stepping. 14089 14090Code and Data Size: Current core subsystem library sizes are shown 14091below. These are the code and data sizes for the acpica.lib 14092produced by the Microsoft Visual C++ 6.0 compiler, and these 14093values do not include any ACPI driver or OSPM code. The debug 14094version of the code includes the debug output trace mechanism and 14095has a larger code and data size. Note that these values will vary 14096depending on the efficiency of the compiler and the compiler 14097options used during generation. 14098 14099 Previous Release (12_18_01) 14100 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14101 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14102 Current Release: 14103 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14104 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14105 141062) Linux 14107 14108 Implemented fix for PIIX reverse throttling errata (Processor 14109driver) 14110 14111Added new Limit interface (Processor and Thermal drivers) 14112 14113New thermal policy (Thermal driver) 14114 14115Many updates to /proc 14116 14117Battery "low" event support (Battery driver) 14118 14119Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 14120 14121IA32 - IA64 initialization unification, no longer experimental 14122 14123Menuconfig options redesigned 14124 141253) ASL Compiler, version X2037: 14126 14127Implemented several new output features to simplify integration of 14128AML code into firmware: 1) Output the AML in C source code with 14129labels for each named ASL object. The original ASL source code 14130is interleaved as C comments. 2) Output the AML in ASM source code 14131with labels and interleaved ASL source. 3) Output the AML in 14132raw hex table form, in either C or ASM. 14133 14134Implemented support for optional string parameters to the 14135LoadTable operator. 14136 14137Completed support for embedded escape sequences within string 14138literals. The compiler now supports all single character escapes 14139as well as the Octal and Hex escapes. Note: the insertion of a 14140null byte into a string literal (via the hex/octal escape) causes 14141the string to be immediately terminated. A warning is issued. 14142 14143Fixed a problem where incorrect AML was generated for the case 14144where an ASL namepath consists of a single parent prefix ( 14145 14146) with no trailing name segments. 14147 14148The compiler has been successfully generated with a 64-bit C 14149compiler. 14150 14151 14152 14153 14154---------------------------------------- 14155Summary of changes for this label: 12_18_01 14156 141571) Linux 14158 14159Enhanced blacklist with reason and severity fields. Any table's 14160signature may now be used to identify a blacklisted system. 14161 14162Call _PIC control method to inform the firmware which interrupt 14163model the OS is using. Turn on any disabled link devices. 14164 14165Cleaned up busmgr /proc error handling (Andreas Dilger) 14166 14167 2) ACPI CA Core Subsystem: 14168 14169Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 14170while loop) 14171 14172Completed implementation of the ACPI 2.0 "Continue", 14173"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 14174operators. All new ACPI 2.0 operators are now implemented in both 14175the ASL compiler and the AML interpreter. The only remaining ACPI 141762.0 task is support for the String data type in the DerefOf 14177operator. Fixed a problem with AcquireMutex where the status code 14178was lost if the caller had to actually wait for the mutex. 14179 14180Increased the maximum ASL Field size from 64K bits to 4G bits. 14181 14182Completed implementation of the external Global Lock interfaces -- 14183AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 14184Handler parameters were added. 14185 14186Completed another pass at removing warnings and issues when 14187compiling with 64-bit compilers. The code now compiles cleanly 14188with the Intel 64-bit C/C++ compiler. Most notably, the pointer 14189add and subtract (diff) macros have changed considerably. 14190 14191 14192Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1419364-bit platforms, 32-bits on all others. This type is used 14194wherever memory allocation and/or the C sizeof() operator is used, 14195and affects the OSL memory allocation interfaces AcpiOsAllocate 14196and AcpiOsCallocate. 14197 14198Implemented sticky user breakpoints in the AML debugger. 14199 14200Code and Data Size: Current core subsystem library sizes are shown 14201below. These are the code and data sizes for the acpica.lib 14202produced by the Microsoft Visual C++ 6.0 compiler, and these 14203values do not include any ACPI driver or OSPM code. The debug 14204version of the code includes the debug output trace mechanism and 14205has a larger code and data size. Note that these values will vary 14206depending on the efficiency of the compiler and the compiler 14207options used during generation. 14208 14209 Previous Release (12_05_01) 14210 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14211 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14212 Current Release: 14213 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14214 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14215 14216 3) ASL Compiler, version X2034: 14217 14218Now checks for (and generates an error if detected) the use of a 14219Break or Continue statement without an enclosing While statement. 14220 14221 14222Successfully generated the compiler with the Intel 64-bit C 14223compiler. 14224 14225 ---------------------------------------- 14226Summary of changes for this label: 12_05_01 14227 14228 1) ACPI CA Core Subsystem: 14229 14230The ACPI 2.0 CopyObject operator is fully implemented. This 14231operator creates a new copy of an object (and is also used to 14232bypass the "implicit conversion" mechanism of the Store operator.) 14233 14234The ACPI 2.0 semantics for the SizeOf operator are fully 14235implemented. The change is that performing a SizeOf on a 14236reference object causes an automatic dereference of the object to 14237tha actual value before the size is evaluated. This behavior was 14238undefined in ACPI 1.0. 14239 14240The ACPI 2.0 semantics for the Extended IRQ resource descriptor 14241have been implemented. The interrupt polarity and mode are now 14242independently set. 14243 14244Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 14245appearing in Package objects were not properly converted to 14246integers when the internal Package was converted to an external 14247object (via the AcpiEvaluateObject interface.) 14248 14249Fixed a problem with the namespace object deletion mechanism for 14250objects created by control methods. There were two parts to this 14251problem: 1) Objects created during the initialization phase method 14252parse were not being deleted, and 2) The object owner ID mechanism 14253to track objects was broken. 14254 14255Fixed a problem where the use of the ASL Scope operator within a 14256control method would result in an invalid opcode exception. 14257 14258Fixed a problem introduced in the previous label where the buffer 14259length required for the _PRT structure was not being returned 14260correctly. 14261 14262Code and Data Size: Current core subsystem library sizes are shown 14263below. These are the code and data sizes for the acpica.lib 14264produced by the Microsoft Visual C++ 6.0 compiler, and these 14265values do not include any ACPI driver or OSPM code. The debug 14266version of the code includes the debug output trace mechanism and 14267has a larger code and data size. Note that these values will vary 14268depending on the efficiency of the compiler and the compiler 14269options used during generation. 14270 14271 Previous Release (11_20_01) 14272 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14273 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14274 14275 Current Release: 14276 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14277 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14278 14279 2) Linux: 14280 14281Updated all files to apply cleanly against 2.4.16. 14282 14283Added basic PCI Interrupt Routing Table (PRT) support for IA32 14284(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 14285version supports both static and dyanmic PRT entries, but dynamic 14286entries are treated as if they were static (not yet 14287reconfigurable). Architecture- specific code to use this data is 14288absent on IA32 but should be available shortly. 14289 14290Changed the initialization sequence to start the ACPI interpreter 14291(acpi_init) prior to initialization of the PCI driver (pci_init) 14292in init/main.c. This ordering is required to support PRT and 14293facilitate other (future) enhancement. A side effect is that the 14294ACPI bus driver and certain device drivers can no longer be loaded 14295as modules. 14296 14297Modified the 'make menuconfig' options to allow PCI Interrupt 14298Routing support to be included without the ACPI Bus and other 14299device drivers. 14300 14301 3) ASL Compiler, version X2033: 14302 14303Fixed some issues with the use of the new CopyObject and 14304DataTableRegion operators. Both are fully functional. 14305 14306 ---------------------------------------- 14307Summary of changes for this label: 11_20_01 14308 14309 20 November 2001. Summary of changes for this release. 14310 14311 1) ACPI CA Core Subsystem: 14312 14313Updated Index support to match ACPI 2.0 semantics. Storing a 14314Integer, String, or Buffer to an Index of a Buffer will store only 14315the least-significant byte of the source to the Indexed buffer 14316byte. Multiple writes are not performed. 14317 14318Fixed a problem where the access type used in an AccessAs ASL 14319operator was not recorded correctly into the field object. 14320 14321Fixed a problem where ASL Event objects were created in a 14322signalled state. Events are now created in an unsignalled state. 14323 14324The internal object cache is now purged after table loading and 14325initialization to reduce the use of dynamic kernel memory -- on 14326the assumption that object use is greatest during the parse phase 14327of the entire table (versus the run-time use of individual control 14328methods.) 14329 14330ACPI 2.0 variable-length packages are now fully operational. 14331 14332Code and Data Size: Code and Data optimizations have permitted new 14333feature development with an actual reduction in the library size. 14334Current core subsystem library sizes are shown below. These are 14335the code and data sizes for the acpica.lib produced by the 14336Microsoft Visual C++ 6.0 compiler, and these values do not include 14337any ACPI driver or OSPM code. The debug version of the code 14338includes the debug output trace mechanism and has a larger code 14339and data size. Note that these values will vary depending on the 14340efficiency of the compiler and the compiler options used during 14341generation. 14342 14343 Previous Release (11_09_01): 14344 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14345 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14346 14347 Current Release: 14348 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14349 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14350 14351 2) Linux: 14352 14353Enhanced the ACPI boot-time initialization code to allow the use 14354of Local APIC tables for processor enumeration on IA-32, and to 14355pave the way for a fully MPS-free boot (on SMP systems) in the 14356near future. This functionality replaces 14357arch/i386/kernel/acpitables.c, which was introduced in an earlier 143582.4.15-preX release. To enable this feature you must add 14359"acpi_boot=on" to the kernel command line -- see the help entry 14360for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 14361the works... 14362 14363Restructured the configuration options to allow boot-time table 14364parsing support without inclusion of the ACPI Interpreter (and 14365other) code. 14366 14367NOTE: This release does not include fixes for the reported events, 14368power-down, and thermal passive cooling issues (coming soon). 14369 14370 3) ASL Compiler: 14371 14372Added additional typechecking for Fields within restricted access 14373Operation Regions. All fields within EC and CMOS regions must be 14374declared with ByteAcc. All fields withing SMBus regions must be 14375declared with the BufferAcc access type. 14376 14377Fixed a problem where the listing file output of control methods 14378no longer interleaved the actual AML code with the ASL source 14379code. 14380 14381 14382 14383 14384---------------------------------------- 14385Summary of changes for this label: 11_09_01 14386 143871) ACPI CA Core Subsystem: 14388 14389Implemented ACPI 2.0-defined support for writes to fields with a 14390Buffer, String, or Integer source operand that is smaller than the 14391target field. In these cases, the source operand is zero-extended 14392to fill the target field. 14393 14394Fixed a problem where a Field starting bit offset (within the 14395parent operation region) was calculated incorrectly if the 14396 14397alignment of the field differed from the access width. This 14398affected CreateWordField, CreateDwordField, CreateQwordField, and 14399possibly other fields that use the "AccessAny" keyword. 14400 14401Fixed a problem introduced in the 11_02_01 release where indirect 14402stores through method arguments did not operate correctly. 14403 144042) Linux: 14405 14406Implemented boot-time ACPI table parsing support 14407(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 14408facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 14409legacy BIOS interfaces (e.g. MPS) for the configuration of system 14410processors, memory, and interrupts during setup_arch(). Note that 14411this patch does not include the required architecture-specific 14412changes required to apply this information -- subsequent patches 14413will be posted for both IA32 and IA64 to achieve this. 14414 14415Added low-level sleep support for IA32 platforms, courtesy of Pat 14416Mochel. This allows IA32 systems to transition to/from various 14417sleeping states (e.g. S1, S3), although the lack of a centralized 14418driver model and power-manageable drivers will prevent its 14419(successful) use on most systems. 14420 14421Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 14422submenu, unified IA32 and IA64 options, added new "Boot using ACPI 14423tables" option, etc. 14424 14425Increased the default timeout for the EC driver from 1ms to 10ms 14426(1000 cycles of 10us) to try to address AE_TIME errors during EC 14427transactions. 14428 14429 ---------------------------------------- 14430Summary of changes for this label: 11_02_01 14431 144321) ACPI CA Core Subsystem: 14433 14434ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 14435(QWordAcc keyword). All ACPI 2.0 64-bit support is now 14436implemented. 14437 14438OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 14439changes to support ACPI 2.0 Qword field access. Read/Write 14440PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 14441accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 14442the value parameter for the address space handler interface is now 14443an ACPI_INTEGER. OSL implementations of these interfaces must now 14444handle the case where the Width parameter is 64. 14445 14446Index Fields: Fixed a problem where unaligned bit assembly and 14447disassembly for IndexFields was not supported correctly. 14448 14449Index and Bank Fields: Nested Index and Bank Fields are now 14450supported. During field access, a check is performed to ensure 14451that the value written to an Index or Bank register is not out of 14452the range of the register. The Index (or Bank) register is 14453written before each access to the field data. Future support will 14454include allowing individual IndexFields to be wider than the 14455DataRegister width. 14456 14457Fields: Fixed a problem where the AML interpreter was incorrectly 14458attempting to write beyond the end of a Field/OpRegion. This was 14459a boundary case that occurred when a DWORD field was written to a 14460BYTE access OpRegion, forcing multiple writes and causing the 14461interpreter to write one datum too many. 14462 14463Fields: Fixed a problem with Field/OpRegion access where the 14464starting bit address of a field was incorrectly calculated if the 14465current access type was wider than a byte (WordAcc, DwordAcc, or 14466QwordAcc). 14467 14468Fields: Fixed a problem where forward references to individual 14469FieldUnits (individual Field names within a Field definition) were 14470not resolved during the AML table load. 14471 14472Fields: Fixed a problem where forward references from a Field 14473definition to the parent Operation Region definition were not 14474resolved during the AML table load. 14475 14476Fields: Duplicate FieldUnit names within a scope are now detected 14477during AML table load. 14478 14479Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 14480returned an incorrect name for the root node. 14481 14482Code and Data Size: Code and Data optimizations have permitted new 14483feature development with an actual reduction in the library size. 14484Current core subsystem library sizes are shown below. These are 14485the code and data sizes for the acpica.lib produced by the 14486Microsoft Visual C++ 6.0 compiler, and these values do not include 14487any ACPI driver or OSPM code. The debug version of the code 14488includes the debug output trace mechanism and has a larger code 14489and data size. Note that these values will vary depending on the 14490efficiency of the compiler and the compiler options used during 14491generation. 14492 14493 Previous Release (10_18_01): 14494 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14495 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14496 14497 Current Release: 14498 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14499 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14500 14501 2) Linux: 14502 14503Improved /proc processor output (Pavel Machek) Re-added 14504MODULE_LICENSE("GPL") to all modules. 14505 14506 3) ASL Compiler version X2030: 14507 14508Duplicate FieldUnit names within a scope are now detected and 14509flagged as errors. 14510 14511 4) Documentation: 14512 14513Programmer Reference updated to reflect OSL and address space 14514handler interface changes described above. 14515 14516---------------------------------------- 14517Summary of changes for this label: 10_18_01 14518 14519ACPI CA Core Subsystem: 14520 14521Fixed a problem with the internal object reference count mechanism 14522that occasionally caused premature object deletion. This resolves 14523all of the outstanding problem reports where an object is deleted 14524in the middle of an interpreter evaluation. Although this problem 14525only showed up in rather obscure cases, the solution to the 14526problem involved an adjustment of all reference counts involving 14527objects attached to namespace nodes. 14528 14529Fixed a problem with Field support in the interpreter where 14530writing to an aligned field whose length is an exact multiple (2 14531or greater) of the field access granularity would cause an attempt 14532to write beyond the end of the field. 14533 14534The top level AML opcode execution functions within the 14535interpreter have been renamed with a more meaningful and 14536consistent naming convention. The modules exmonad.c and 14537exdyadic.c were eliminated. New modules are exoparg1.c, 14538exoparg2.c, exoparg3.c, and exoparg6.c. 14539 14540Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 14541 14542Fixed a problem where the AML debugger was causing some internal 14543objects to not be deleted during subsystem termination. 14544 14545Fixed a problem with the external AcpiEvaluateObject interface 14546where the subsystem would fault if the named object to be 14547evaluated refered to a constant such as Zero, Ones, etc. 14548 14549Fixed a problem with IndexFields and BankFields where the 14550subsystem would fault if the index, data, or bank registers were 14551not defined in the same scope as the field itself. 14552 14553Added printf format string checking for compilers that support 14554this feature. Corrected more than 50 instances of issues with 14555format specifiers within invocations of ACPI_DEBUG_PRINT 14556throughout the core subsystem code. 14557 14558The ASL "Revision" operator now returns the ACPI support level 14559implemented in the core - the value "2" since the ACPI 2.0 support 14560is more than 50% implemented. 14561 14562Enhanced the output of the AML debugger "dump namespace" command 14563to output in a more human-readable form. 14564 14565Current core subsystem library code sizes are shown below. These 14566 14567are the code and data sizes for the acpica.lib produced by the 14568Microsoft Visual C++ 6.0 compiler, and these values do not include 14569any ACPI driver or OSPM code. The debug version of the code 14570includes the full debug trace mechanism -- leading to a much 14571 14572larger code and data size. Note that these values will vary 14573depending on the efficiency of the compiler and the compiler 14574options used during generation. 14575 14576 Previous Label (09_20_01): 14577 Non-Debug Version: 65K Code, 5K Data, 70K Total 14578 Debug Version: 138K Code, 58K Data, 196K Total 14579 14580 This Label: 14581 14582 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14583 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14584 14585Linux: 14586 14587Implemented a "Bad BIOS Blacklist" to track machines that have 14588known ASL/AML problems. 14589 14590Enhanced the /proc interface for the thermal zone driver and added 14591support for _HOT (the critical suspend trip point). The 'info' 14592file now includes threshold/policy information, and allows setting 14593of _SCP (cooling preference) and _TZP (polling frequency) values 14594to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 14595frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 14596preference to the passive/quiet mode (if supported by the ASL). 14597 14598Implemented a workaround for a gcc bug that resuted in an OOPs 14599when loading the control method battery driver. 14600 14601 ---------------------------------------- 14602Summary of changes for this label: 09_20_01 14603 14604 ACPI CA Core Subsystem: 14605 14606The AcpiEnableEvent and AcpiDisableEvent interfaces have been 14607modified to allow individual GPE levels to be flagged as wake- 14608enabled (i.e., these GPEs are to remain enabled when the platform 14609sleeps.) 14610 14611The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 14612support wake-enabled GPEs. This means that upon entering the 14613sleep state, all GPEs that are not wake-enabled are disabled. 14614When leaving the sleep state, these GPEs are reenabled. 14615 14616A local double-precision divide/modulo module has been added to 14617enhance portability to OS kernels where a 64-bit math library is 14618not available. The new module is "utmath.c". 14619 14620Several optimizations have been made to reduce the use of CPU 14621stack. Originally over 2K, the maximum stack usage is now below 146222K at 1860 bytes (1.82k) 14623 14624Fixed a problem with the AcpiGetFirmwareTable interface where the 14625root table pointer was not mapped into a logical address properly. 14626 14627Fixed a problem where a NULL pointer was being dereferenced in the 14628interpreter code for the ASL Notify operator. 14629 14630Fixed a problem where the use of the ASL Revision operator 14631returned an error. This operator now returns the current version 14632of the ACPI CA core subsystem. 14633 14634Fixed a problem where objects passed as control method parameters 14635to AcpiEvaluateObject were always deleted at method termination. 14636However, these objects may end up being stored into the namespace 14637by the called method. The object reference count mechanism was 14638applied to these objects instead of a force delete. 14639 14640Fixed a problem where static strings or buffers (contained in the 14641AML code) that are declared as package elements within the ASL 14642code could cause a fault because the interpreter would attempt to 14643delete them. These objects are now marked with the "static 14644object" flag to prevent any attempt to delete them. 14645 14646Implemented an interpreter optimization to use operands directly 14647from the state object instead of extracting the operands to local 14648variables. This reduces stack use and code size, and improves 14649performance. 14650 14651The module exxface.c was eliminated as it was an unnecessary extra 14652layer of code. 14653 14654Current core subsystem library code sizes are shown below. These 14655are the code and data sizes for the acpica.lib produced by the 14656Microsoft Visual C++ 6.0 compiler, and these values do not include 14657any ACPI driver or OSPM code. The debug version of the code 14658includes the full debug trace mechanism -- leading to a much 14659larger code and data size. Note that these values will vary 14660depending on the efficiency of the compiler and the compiler 14661options used during generation. 14662 14663 Non-Debug Version: 65K Code, 5K Data, 70K Total 14664(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 14665Total (Previously 195K) 14666 14667Linux: 14668 14669Support for ACPI 2.0 64-bit integers has been added. All ACPI 14670Integer objects are now 64 bits wide 14671 14672All Acpi data types and structures are now in lower case. Only 14673Acpi macros are upper case for differentiation. 14674 14675 Documentation: 14676 14677Changes to the external interfaces as described above. 14678 14679 ---------------------------------------- 14680Summary of changes for this label: 08_31_01 14681 14682 ACPI CA Core Subsystem: 14683 14684A bug with interpreter implementation of the ASL Divide operator 14685was found and fixed. The implicit function return value (not the 14686explicit store operands) was returning the remainder instead of 14687the quotient. This was a longstanding bug and it fixes several 14688known outstanding issues on various platforms. 14689 14690The ACPI_DEBUG_PRINT and function trace entry/exit macros have 14691been further optimized for size. There are 700 invocations of the 14692DEBUG_PRINT macro alone, so each optimization reduces the size of 14693the debug version of the subsystem significantly. 14694 14695A stack trace mechanism has been implemented. The maximum stack 14696usage is about 2K on 32-bit platforms. The debugger command "stat 14697stack" will display the current maximum stack usage. 14698 14699All public symbols and global variables within the subsystem are 14700now prefixed with the string "Acpi". This keeps all of the 14701symbols grouped together in a kernel map, and avoids conflicts 14702with other kernel subsystems. 14703 14704Most of the internal fixed lookup tables have been moved into the 14705code segment via the const operator. 14706 14707Several enhancements have been made to the interpreter to both 14708reduce the code size and improve performance. 14709 14710Current core subsystem library code sizes are shown below. These 14711are the code and data sizes for the acpica.lib produced by the 14712Microsoft Visual C++ 6.0 compiler, and these values do not include 14713any ACPI driver or OSPM code. The debug version of the code 14714includes the full debug trace mechanism which contains over 700 14715invocations of the DEBUG_PRINT macro, 500 function entry macro 14716invocations, and over 900 function exit macro invocations -- 14717leading to a much larger code and data size. Note that these 14718values will vary depending on the efficiency of the compiler and 14719the compiler options used during generation. 14720 14721 Non-Debug Version: 64K Code, 5K Data, 69K Total 14722Debug Version: 137K Code, 58K Data, 195K Total 14723 14724 Linux: 14725 14726Implemented wbinvd() macro, pending a kernel-wide definition. 14727 14728Fixed /proc/acpi/event to handle poll() and short reads. 14729 14730 ASL Compiler, version X2026: 14731 14732Fixed a problem introduced in the previous label where the AML 14733 14734code emitted for package objects produced packages with zero 14735length. 14736 14737 ---------------------------------------- 14738Summary of changes for this label: 08_16_01 14739 14740ACPI CA Core Subsystem: 14741 14742The following ACPI 2.0 ASL operators have been implemented in the 14743AML interpreter (These are already supported by the Intel ASL 14744compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 14745ToBuffer. Support for 64-bit AML constants is implemented in the 14746AML parser, debugger, and disassembler. 14747 14748The internal memory tracking mechanism (leak detection code) has 14749been upgraded to reduce the memory overhead (a separate tracking 14750block is no longer allocated for each memory allocation), and now 14751supports all of the internal object caches. 14752 14753The data structures and code for the internal object caches have 14754been coelesced and optimized so that there is a single cache and 14755memory list data structure and a single group of functions that 14756implement generic cache management. This has reduced the code 14757size in both the debug and release versions of the subsystem. 14758 14759The DEBUG_PRINT macro(s) have been optimized for size and replaced 14760by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 14761different, because it generates a single call to an internal 14762function. This results in a savings of about 90 bytes per 14763invocation, resulting in an overall code and data savings of about 1476416% in the debug version of the subsystem. 14765 14766 Linux: 14767 14768Fixed C3 disk corruption problems and re-enabled C3 on supporting 14769machines. 14770 14771Integrated low-level sleep code by Patrick Mochel. 14772 14773Further tweaked source code Linuxization. 14774 14775Other minor fixes. 14776 14777 ASL Compiler: 14778 14779Support for ACPI 2.0 variable length packages is fixed/completed. 14780 14781Fixed a problem where the optional length parameter for the ACPI 147822.0 ToString operator. 14783 14784Fixed multiple extraneous error messages when a syntax error is 14785detected within the declaration line of a control method. 14786 14787 ---------------------------------------- 14788Summary of changes for this label: 07_17_01 14789 14790ACPI CA Core Subsystem: 14791 14792Added a new interface named AcpiGetFirmwareTable to obtain any 14793ACPI table via the ACPI signature. The interface can be called at 14794any time during kernel initialization, even before the kernel 14795virtual memory manager is initialized and paging is enabled. This 14796allows kernel subsystems to obtain ACPI tables very early, even 14797before the ACPI CA subsystem is initialized. 14798 14799Fixed a problem where Fields defined with the AnyAcc attribute 14800could be resolved to the incorrect address under the following 14801conditions: 1) the field width is larger than 8 bits and 2) the 14802parent operation region is not defined on a DWORD boundary. 14803 14804Fixed a problem where the interpreter is not being locked during 14805namespace initialization (during execution of the _INI control 14806methods), causing an error when an attempt is made to release it 14807later. 14808 14809ACPI 2.0 support in the AML Interpreter has begun and will be 14810ongoing throughout the rest of this year. In this label, The Mod 14811operator is implemented. 14812 14813Added a new data type to contain full PCI addresses named 14814ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 14815and Function values. 14816 14817 Linux: 14818 14819Enhanced the Linux version of the source code to change most 14820capitalized ACPI type names to lowercase. For example, all 14821instances of ACPI_STATUS are changed to acpi_status. This will 14822result in a large diff, but the change is strictly cosmetic and 14823aligns the CA code closer to the Linux coding standard. 14824 14825OSL Interfaces: 14826 14827The interfaces to the PCI configuration space have been changed to 14828add the PCI Segment number and to split the single 32-bit combined 14829DeviceFunction field into two 16-bit fields. This was 14830accomplished by moving the four values that define an address in 14831PCI configuration space (segment, bus, device, and function) to 14832the new ACPI_PCI_ID structure. 14833 14834The changes to the PCI configuration space interfaces led to a 14835reexamination of the complete set of address space access 14836interfaces for PCI, I/O, and Memory. The previously existing 18 14837interfaces have proven difficult to maintain (any small change 14838must be propagated across at least 6 interfaces) and do not easily 14839allow for future expansion to 64 bits if necessary. Also, on some 14840systems, it would not be appropriate to demultiplex the access 14841width (8, 16, 32,or 64) before calling the OSL if the 14842corresponding native OS interfaces contain a similar access width 14843parameter. For these reasons, the 18 address space interfaces 14844have been replaced by these 6 new ones: 14845 14846AcpiOsReadPciConfiguration 14847AcpiOsWritePciConfiguration 14848AcpiOsReadMemory 14849AcpiOsWriteMemory 14850AcpiOsReadPort 14851AcpiOsWritePort 14852 14853Added a new interface named AcpiOsGetRootPointer to allow the OSL 14854to perform the platform and/or OS-specific actions necessary to 14855obtain the ACPI RSDP table pointer. On IA-32 platforms, this 14856interface will simply call down to the CA core to perform the low- 14857memory search for the table. On IA-64, the RSDP is obtained from 14858EFI. Migrating this interface to the OSL allows the CA core to 14859 14860remain OS and platform independent. 14861 14862Added a new interface named AcpiOsSignal to provide a generic 14863"function code and pointer" interface for various miscellaneous 14864signals and notifications that must be made to the host OS. The 14865first such signals are intended to support the ASL Fatal and 14866Breakpoint operators. In the latter case, the AcpiOsBreakpoint 14867interface has been obsoleted. 14868 14869The definition of the AcpiFormatException interface has been 14870changed to simplify its use. The caller no longer must supply a 14871buffer to the call; A pointer to a const string is now returned 14872directly. This allows the call to be easily used in printf 14873statements, etc. since the caller does not have to manage a local 14874buffer. 14875 14876 14877 ASL Compiler, Version X2025: 14878 14879The ACPI 2.0 Switch/Case/Default operators have been implemented 14880and are fully functional. They will work with all ACPI 1.0 14881interpreters, since the operators are simply translated to If/Else 14882pairs. 14883 14884The ACPI 2.0 ElseIf operator is implemented and will also work 14885with 1.0 interpreters, for the same reason. 14886 14887Implemented support for ACPI 2.0 variable-length packages. These 14888packages have a separate opcode, and their size is determined by 14889the interpreter at run-time. 14890 14891Documentation The ACPI CA Programmer Reference has been updated to 14892reflect the new interfaces and changes to existing interfaces. 14893 14894 ------------------------------------------ 14895Summary of changes for this label: 06_15_01 14896 14897 ACPI CA Core Subsystem: 14898 14899Fixed a problem where a DWORD-accessed field within a Buffer 14900object would get its byte address inadvertently rounded down to 14901the nearest DWORD. Buffers are always Byte-accessible. 14902 14903 ASL Compiler, version X2024: 14904 14905Fixed a problem where the Switch() operator would either fault or 14906hang the compiler. Note however, that the AML code for this ACPI 149072.0 operator is not yet implemented. 14908 14909Compiler uses the new AcpiOsGetTimer interface to obtain compile 14910timings. 14911 14912Implementation of the CreateField operator automatically converts 14913a reference to a named field within a resource descriptor from a 14914byte offset to a bit offset if required. 14915 14916Added some missing named fields from the resource descriptor 14917support. These are the names that are automatically created by the 14918compiler to reference fields within a descriptor. They are only 14919valid at compile time and are not passed through to the AML 14920interpreter. 14921 14922Resource descriptor named fields are now typed as Integers and 14923subject to compile-time typechecking when used in expressions. 14924 14925 ------------------------------------------ 14926Summary of changes for this label: 05_18_01 14927 14928 ACPI CA Core Subsystem: 14929 14930Fixed a couple of problems in the Field support code where bits 14931from adjacent fields could be returned along with the proper field 14932bits. Restructured the field support code to improve performance, 14933readability and maintainability. 14934 14935New DEBUG_PRINTP macro automatically inserts the procedure name 14936into the output, saving hundreds of copies of procedure name 14937strings within the source, shrinking the memory footprint of the 14938debug version of the core subsystem. 14939 14940 Source Code Structure: 14941 14942The source code directory tree was restructured to reflect the 14943current organization of the component architecture. Some files 14944and directories have been moved and/or renamed. 14945 14946 Linux: 14947 14948Fixed leaking kacpidpc processes. 14949 14950Fixed queueing event data even when /proc/acpi/event is not 14951opened. 14952 14953 ASL Compiler, version X2020: 14954 14955Memory allocation performance enhancement - over 24X compile time 14956improvement on large ASL files. Parse nodes and namestring 14957buffers are now allocated from a large internal compiler buffer. 14958 14959The temporary .SRC file is deleted unless the "-s" option is 14960specified 14961 14962The "-d" debug output option now sends all output to the .DBG file 14963instead of the console. 14964 14965"External" second parameter is now optional 14966 14967"ElseIf" syntax now properly allows the predicate 14968 14969Last operand to "Load" now recognized as a Target operand 14970 14971Debug object can now be used anywhere as a normal object. 14972 14973ResourceTemplate now returns an object of type BUFFER 14974 14975EISAID now returns an object of type INTEGER 14976 14977"Index" now works with a STRING operand 14978 14979"LoadTable" now accepts optional parameters 14980 14981"ToString" length parameter is now optional 14982 14983"Interrupt (ResourceType," parse error fixed. 14984 14985"Register" with a user-defined region space parse error fixed 14986 14987Escaped backslash at the end of a string ("\\") scan/parse error 14988fixed 14989 14990"Revision" is now an object of type INTEGER. 14991 14992 14993 14994------------------------------------------ 14995Summary of changes for this label: 05_02_01 14996 14997Linux: 14998 14999/proc/acpi/event now blocks properly. 15000 15001Removed /proc/sys/acpi. You can still dump your DSDT from 15002/proc/acpi/dsdt. 15003 15004 ACPI CA Core Subsystem: 15005 15006Fixed a problem introduced in the previous label where some of the 15007"small" resource descriptor types were not recognized. 15008 15009Improved error messages for the case where an ASL Field is outside 15010the range of the parent operation region. 15011 15012 ASL Compiler, version X2018: 15013 15014 15015Added error detection for ASL Fields that extend beyond the length 15016of the parent operation region (only if the length of the region 15017is known at compile time.) This includes fields that have a 15018minimum access width that is smaller than the parent region, and 15019individual field units that are partially or entirely beyond the 15020extent of the parent. 15021 15022 15023 15024------------------------------------------ 15025Summary of changes for this label: 04_27_01 15026 15027 ACPI CA Core Subsystem: 15028 15029Fixed a problem where the namespace mutex could be released at the 15030wrong time during execution of AcpiRemoveAddressSpaceHandler. 15031 15032Added optional thread ID output for debug traces, to simplify 15033debugging of multiple threads. Added context switch notification 15034when the debug code realizes that a different thread is now 15035executing ACPI code. 15036 15037Some additional external data types have been prefixed with the 15038string "ACPI_" for consistency. This may effect existing code. 15039The data types affected are the external callback typedefs - e.g., 15040 15041WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 15042 15043 Linux: 15044 15045Fixed an issue with the OSL semaphore implementation where a 15046thread was waking up with an error from receiving a SIGCHLD 15047signal. 15048 15049Linux version of ACPI CA now uses the system C library for string 15050manipulation routines instead of a local implementation. 15051 15052Cleaned up comments and removed TBDs. 15053 15054 ASL Compiler, version X2017: 15055 15056Enhanced error detection and reporting for all file I/O 15057operations. 15058 15059 Documentation: 15060 15061Programmer Reference updated to version 1.06. 15062 15063 15064 15065------------------------------------------ 15066Summary of changes for this label: 04_13_01 15067 15068 ACPI CA Core Subsystem: 15069 15070Restructured support for BufferFields and RegionFields. 15071BankFields support is now fully operational. All known 32-bit 15072limitations on field sizes have been removed. Both BufferFields 15073and (Operation) RegionFields are now supported by the same field 15074management code. 15075 15076Resource support now supports QWORD address and IO resources. The 1507716/32/64 bit address structures and the Extended IRQ structure 15078have been changed to properly handle Source Resource strings. 15079 15080A ThreadId of -1 is now used to indicate a "mutex not acquired" 15081condition internally and must never be returned by AcpiOsThreadId. 15082This reserved value was changed from 0 since Unix systems allow a 15083thread ID of 0. 15084 15085Linux: 15086 15087Driver code reorganized to enhance portability 15088 15089Added a kernel configuration option to control ACPI_DEBUG 15090 15091Fixed the EC driver to honor _GLK. 15092 15093ASL Compiler, version X2016: 15094 15095Fixed support for the "FixedHw" keyword. Previously, the FixedHw 15096address space was set to 0, not 0x7f as it should be. 15097 15098 ------------------------------------------ 15099Summary of changes for this label: 03_13_01 15100 15101 ACPI CA Core Subsystem: 15102 15103During ACPI initialization, the _SB_._INI method is now run if 15104present. 15105 15106Notify handler fix - notifies are deferred until the parent method 15107completes execution. This fixes the "mutex already acquired" 15108issue seen occasionally. 15109 15110Part of the "implicit conversion" rules in ACPI 2.0 have been 15111found to cause compatibility problems with existing ASL/AML. The 15112convert "result-to-target-type" implementation has been removed 15113for stores to method Args and Locals. Source operand conversion 15114is still fully implemented. Possible changes to ACPI 2.0 15115specification pending. 15116 15117Fix to AcpiRsCalculatePciRoutingTableLength to return correct 15118length. 15119 15120Fix for compiler warnings for 64-bit compiles. 15121 15122 Linux: 15123 15124/proc output aligned for easier parsing. 15125 15126Release-version compile problem fixed. 15127 15128New kernel configuration options documented in Configure.help. 15129 15130IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 15131context" message. 15132 15133 OSPM: 15134 15135Power resource driver integrated with bus manager. 15136 15137Fixed kernel fault during active cooling for thermal zones. 15138 15139Source Code: 15140 15141The source code tree has been restructured. 15142 15143 15144 15145------------------------------------------ 15146Summary of changes for this label: 03_02_01 15147 15148 Linux OS Services Layer (OSL): 15149 15150Major revision of all Linux-specific code. 15151 15152Modularized all ACPI-specific drivers. 15153 15154Added new thermal zone and power resource drivers. 15155 15156Revamped /proc interface (new functionality is under /proc/acpi). 15157 15158New kernel configuration options. 15159 15160 Linux known issues: 15161 15162New kernel configuration options not documented in Configure.help 15163yet. 15164 15165 15166Module dependencies not currently implemented. If used, they 15167should be loaded in this order: busmgr, power, ec, system, 15168processor, battery, ac_adapter, button, thermal. 15169 15170Modules will not load if CONFIG_MODVERSION is set. 15171 15172IBM 600E - entering S5 may reboot instead of shutting down. 15173 15174IBM 600E - Sleep button may generate "Invalid <NULL> context" 15175message. 15176 15177Some systems may fail with "execution mutex already acquired" 15178message. 15179 15180 ACPI CA Core Subsystem: 15181 15182Added a new OSL Interface, AcpiOsGetThreadId. This was required 15183for the deadlock detection code. Defined to return a non-zero, 32- 15184bit thread ID for the currently executing thread. May be a non- 15185zero constant integer on single-thread systems. 15186 15187Implemented deadlock detection for internal subsystem mutexes. We 15188may add conditional compilation for this code (debug only) later. 15189 15190ASL/AML Mutex object semantics are now fully supported. This 15191includes multiple acquires/releases by owner and support for the 15192 15193Mutex SyncLevel parameter. 15194 15195A new "Force Release" mechanism automatically frees all ASL 15196Mutexes that have been acquired but not released when a thread 15197exits the interpreter. This forces conformance to the ACPI spec 15198("All mutexes must be released when an invocation exits") and 15199prevents deadlocked ASL threads. This mechanism can be expanded 15200(later) to monitor other resource acquisitions if OEM ASL code 15201continues to misbehave (which it will). 15202 15203Several new ACPI exception codes have been added for the Mutex 15204support. 15205 15206Recursive method calls are now allowed and supported (the ACPI 15207spec does in fact allow recursive method calls.) The number of 15208recursive calls is subject to the restrictions imposed by the 15209SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 15210parameter. 15211 15212Implemented support for the SyncLevel parameter for control 15213methods (ACPI 2.0 feature) 15214 15215Fixed a deadlock problem when multiple threads attempted to use 15216the interpreter. 15217 15218Fixed a problem where the string length of a String package 15219element was not always set in a package returned from 15220AcpiEvaluateObject. 15221 15222Fixed a problem where the length of a String package element was 15223not always included in the length of the overall package returned 15224from AcpiEvaluateObject. 15225 15226Added external interfaces (Acpi*) to the ACPI debug memory 15227manager. This manager keeps a list of all outstanding 15228allocations, and can therefore detect memory leaks and attempts to 15229free memory blocks more than once. Useful for code such as the 15230power manager, etc. May not be appropriate for device drivers. 15231Performance with the debug code enabled is slow. 15232 15233The ACPI Global Lock is now an optional hardware element. 15234 15235 ASL Compiler Version X2015: 15236 15237Integrated changes to allow the compiler to be generated on 15238multiple platforms. 15239 15240Linux makefile added to generate the compiler on Linux 15241 15242 Source Code: 15243 15244All platform-specific headers have been moved to their own 15245subdirectory, Include/Platform. 15246 15247New source file added, Interpreter/ammutex.c 15248 15249New header file, Include/acstruct.h 15250 15251 Documentation: 15252 15253The programmer reference has been updated for the following new 15254interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 15255 15256 ------------------------------------------ 15257Summary of changes for this label: 02_08_01 15258 15259Core ACPI CA Subsystem: Fixed a problem where an error was 15260incorrectly returned if the return resource buffer was larger than 15261the actual data (in the resource interfaces). 15262 15263References to named objects within packages are resolved to the 15264 15265full pathname string before packages are returned directly (via 15266the AcpiEvaluateObject interface) or indirectly via the resource 15267interfaces. 15268 15269Linux OS Services Layer (OSL): 15270 15271Improved /proc battery interface. 15272 15273 15274Added C-state debugging output and other miscellaneous fixes. 15275 15276ASL Compiler Version X2014: 15277 15278All defined method arguments can now be used as local variables, 15279including the ones that are not actually passed in as parameters. 15280The compiler tracks initialization of the arguments and issues an 15281exception if they are used without prior assignment (just like 15282locals). 15283 15284The -o option now specifies a filename prefix that is used for all 15285output files, including the AML output file. Otherwise, the 15286default behavior is as follows: 1) the AML goes to the file 15287specified in the DSDT. 2) all other output files use the input 15288source filename as the base. 15289 15290 ------------------------------------------ 15291Summary of changes for this label: 01_25_01 15292 15293Core ACPI CA Subsystem: Restructured the implementation of object 15294store support within the interpreter. This includes support for 15295the Store operator as well as any ASL operators that include a 15296target operand. 15297 15298Partially implemented support for Implicit Result-to-Target 15299conversion. This is when a result object is converted on the fly 15300to the type of an existing target object. Completion of this 15301support is pending further analysis of the ACPI specification 15302concerning this matter. 15303 15304CPU-specific code has been removed from the subsystem (hardware 15305directory). 15306 15307New Power Management Timer functions added 15308 15309Linux OS Services Layer (OSL): Moved system state transition code 15310to the core, fixed it, and modified Linux OSL accordingly. 15311 15312Fixed C2 and C3 latency calculations. 15313 15314 15315We no longer use the compilation date for the version message on 15316initialization, but retrieve the version from AcpiGetSystemInfo(). 15317 15318Incorporated for fix Sony VAIO machines. 15319 15320Documentation: The Programmer Reference has been updated and 15321reformatted. 15322 15323 15324ASL Compiler: Version X2013: Fixed a problem where the line 15325numbering and error reporting could get out of sync in the 15326presence of multiple include files. 15327 15328 ------------------------------------------ 15329Summary of changes for this label: 01_15_01 15330 15331Core ACPI CA Subsystem: 15332 15333Implemented support for type conversions in the execution of the 15334ASL Concatenate operator (The second operand is converted to 15335match the type of the first operand before concatenation.) 15336 15337Support for implicit source operand conversion is partially 15338implemented. The ASL source operand types Integer, Buffer, and 15339String are freely interchangeable for most ASL operators and are 15340converted by the interpreter on the fly as required. Implicit 15341Target operand conversion (where the result is converted to the 15342target type before storing) is not yet implemented. 15343 15344Support for 32-bit and 64-bit BCD integers is implemented. 15345 15346Problem fixed where a field read on an aligned field could cause a 15347read past the end of the field. 15348 15349New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 15350does not return a value, but the caller expects one. (The ASL 15351compiler flags this as a warning.) 15352 15353ASL Compiler: 15354 15355Version X2011: 153561. Static typechecking of all operands is implemented. This 15357prevents the use of invalid objects (such as using a Package where 15358an Integer is required) at compile time instead of at interpreter 15359run-time. 153602. The ASL source line is printed with ALL errors and warnings. 153613. Bug fix for source EOF without final linefeed. 153624. Debug option is split into a parse trace and a namespace trace. 153635. Namespace output option (-n) includes initial values for 15364integers and strings. 153656. Parse-only option added for quick syntax checking. 153667. Compiler checks for duplicate ACPI name declarations 15367 15368Version X2012: 153691. Relaxed typechecking to allow interchangeability between 15370strings, integers, and buffers. These types are now converted by 15371the interpreter at runtime. 153722. Compiler reports time taken by each internal subsystem in the 15373debug output file. 15374 15375 15376 ------------------------------------------ 15377Summary of changes for this label: 12_14_00 15378 15379ASL Compiler: 15380 15381This is the first official release of the compiler. Since the 15382compiler requires elements of the Core Subsystem, this label 15383synchronizes everything. 15384 15385------------------------------------------ 15386Summary of changes for this label: 12_08_00 15387 15388 15389Fixed a problem where named references within the ASL definition 15390of both OperationRegions and CreateXXXFields did not work 15391properly. The symptom was an AE_AML_OPERAND_TYPE during 15392initialization of the region/field. This is similar (but not 15393related internally) to the problem that was fixed in the last 15394label. 15395 15396Implemented both 32-bit and 64-bit support for the BCD ASL 15397functions ToBCD and FromBCD. 15398 15399Updated all legal headers to include "2000" in the copyright 15400years. 15401 15402 ------------------------------------------ 15403Summary of changes for this label: 12_01_00 15404 15405Fixed a problem where method invocations within the ASL definition 15406of both OperationRegions and CreateXXXFields did not work 15407properly. The symptom was an AE_AML_OPERAND_TYPE during 15408initialization of the region/field: 15409 15410 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 15411[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 15412(0x3005) 15413 15414Fixed a problem where operators with more than one nested 15415subexpression would fail. The symptoms were varied, by mostly 15416AE_AML_OPERAND_TYPE errors. This was actually a rather serious 15417problem that has gone unnoticed until now. 15418 15419 Subtract (Add (1,2), Multiply (3,4)) 15420 15421Fixed a problem where AcpiGetHandle didn't quite get fixed in the 15422previous build (The prefix part of a relative path was handled 15423incorrectly). 15424 15425Fixed a problem where Operation Region initialization failed if 15426the operation region name was a "namepath" instead of a simple 15427"nameseg". Symptom was an AE_NO_OPERAND error. 15428 15429Fixed a problem where an assignment to a local variable via the 15430indirect RefOf mechanism only worked for the first such 15431assignment. Subsequent assignments were ignored. 15432 15433 ------------------------------------------ 15434Summary of changes for this label: 11_15_00 15435 15436ACPI 2.0 table support with backwards support for ACPI 1.0 and the 154370.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 15438the AML interpreter does NOT have support for the new 2.0 ASL 15439grammar terms at this time. 15440 15441All ACPI hardware access is via the GAS structures in the ACPI 2.0 15442FADT. 15443 15444All physical memory addresses across all platforms are now 64 bits 15445wide. Logical address width remains dependent on the platform 15446(i.e., "void *"). 15447 15448AcpiOsMapMemory interface changed to a 64-bit physical address. 15449 15450The AML interpreter integer size is now 64 bits, as per the ACPI 154512.0 specification. 15452 15453For backwards compatibility with ACPI 1.0, ACPI tables with a 15454revision number less than 2 use 32-bit integers only. 15455 15456Fixed a problem where the evaluation of OpRegion operands did not 15457always resolve them to numbers properly. 15458 15459------------------------------------------ 15460Summary of changes for this label: 10_20_00 15461 15462Fix for CBN_._STA issue. This fix will allow correct access to 15463CBN_ OpRegions when the _STA returns 0x8. 15464 15465Support to convert ACPI constants (Ones, Zeros, One) to actual 15466values before a package object is returned 15467 15468Fix for method call as predicate to if/while construct causing 15469incorrect if/while behavior 15470 15471Fix for Else block package lengths sometimes calculated wrong (if 15472block > 63 bytes) 15473 15474Fix for Processor object length field, was always zero 15475 15476Table load abort if FACP sanity check fails 15477 15478Fix for problem with Scope(name) if name already exists 15479 15480Warning emitted if a named object referenced cannot be found 15481(resolved) during method execution. 15482 15483 15484 15485 15486 15487------------------------------------------ 15488Summary of changes for this label: 9_29_00 15489 15490New table initialization interfaces: AcpiInitializeSubsystem no 15491longer has any parameters AcpiFindRootPointer - Find the RSDP (if 15492necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 15493>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 15494AcpiLoadTables 15495 15496Note: These interface changes require changes to all existing OSDs 15497 15498The PCI_Config default address space handler is always installed 15499at the root namespace object. 15500 15501------------------------------------------- 15502Summary of changes for this label: 09_15_00 15503 15504The new initialization architecture is implemented. New 15505interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 15506AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 15507 15508(Namespace is automatically loaded when a table is loaded) 15509 15510The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1551152 bytes to 32 bytes. There is usually one of these for every 15512namespace object, so the memory savings is significant. 15513 15514Implemented just-in-time evaluation of the CreateField operators. 15515 15516Bug fixes for IA-64 support have been integrated. 15517 15518Additional code review comments have been implemented 15519 15520The so-called "third pass parse" has been replaced by a final walk 15521through the namespace to initialize all operation regions (address 15522spaces) and fields that have not yet been initialized during the 15523execution of the various _INI and REG methods. 15524 15525New file - namespace/nsinit.c 15526 15527------------------------------------------- 15528Summary of changes for this label: 09_01_00 15529 15530Namespace manager data structures have been reworked to change the 15531primary object from a table to a single object. This has 15532resulted in dynamic memory savings of 3X within the namespace and 155332X overall in the ACPI CA subsystem. 15534 15535Fixed problem where the call to AcpiEvFindPciRootBuses was 15536inadvertently left commented out. 15537 15538Reduced the warning count when generating the source with the GCC 15539compiler. 15540 15541Revision numbers added to each module header showing the 15542SourceSafe version of the file. Please refer to this version 15543number when giving us feedback or comments on individual modules. 15544 15545The main object types within the subsystem have been renamed to 15546clarify their purpose: 15547 15548ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 15549ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 15550ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 15551 15552NOTE: no changes to the initialization sequence are included in 15553this label. 15554 15555------------------------------------------- 15556Summary of changes for this label: 08_23_00 15557 15558Fixed problem where TerminateControlMethod was being called 15559multiple times per method 15560 15561Fixed debugger problem where single stepping caused a semaphore to 15562be oversignalled 15563 15564Improved performance through additional parse object caching - 15565added ACPI_EXTENDED_OP type 15566 15567------------------------------------------- 15568Summary of changes for this label: 08_10_00 15569 15570Parser/Interpreter integration: Eliminated the creation of 15571complete parse trees for ACPI tables and control methods. 15572Instead, parse subtrees are created and then deleted as soon as 15573they are processed (Either entered into the namespace or executed 15574by the interpreter). This reduces the use of dynamic kernel 15575memory significantly. (about 10X) 15576 15577Exception codes broken into classes and renumbered. Be sure to 15578recompile all code that includes acexcep.h. Hopefully we won't 15579have to renumber the codes again now that they are split into 15580classes (environment, programmer, AML code, ACPI table, and 15581internal). 15582 15583Fixed some additional alignment issues in the Resource Manager 15584subcomponent 15585 15586Implemented semaphore tracking in the AcpiExec utility, and fixed 15587several places where mutexes/semaphores were being unlocked 15588without a corresponding lock operation. There are no known 15589semaphore or mutex "leaks" at this time. 15590 15591Fixed the case where an ASL Return operator is used to return an 15592unnamed package. 15593 15594------------------------------------------- 15595Summary of changes for this label: 07_28_00 15596 15597Fixed a problem with the way addresses were calculated in 15598AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 15599manifested itself when a Field was created with WordAccess or 15600DwordAccess, but the field unit defined within the Field was less 15601 15602than a Word or Dword. 15603 15604Fixed a problem in AmlDumpOperands() module's loop to pull 15605operands off of the operand stack to display information. The 15606problem manifested itself as a TLB error on 64-bit systems when 15607accessing an operand stack with two or more operands. 15608 15609Fixed a problem with the PCI configuration space handlers where 15610context was getting confused between accesses. This required a 15611change to the generic address space handler and address space 15612setup definitions. Handlers now get both a global handler context 15613(this is the one passed in by the user when executing 15614AcpiInstallAddressSpaceHandler() and a specific region context 15615that is unique to each region (For example, the _ADR, _SEG and 15616_BBN values associated with a specific region). The generic 15617function definitions have changed to the following: 15618 15619typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 15620UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 15621*HandlerContext, // This used to be void *Context void 15622*RegionContext); // This is an additional parameter 15623 15624typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 15625RegionHandle, UINT32 Function, void *HandlerContext, void 15626**RegionContext); // This used to be **ReturnContext 15627 15628------------------------------------------- 15629Summary of changes for this label: 07_21_00 15630 15631Major file consolidation and rename. All files within the 15632interpreter have been renamed as well as most header files. This 15633was done to prevent collisions with existing files in the host 15634OSs -- filenames such as "config.h" and "global.h" seem to be 15635quite common. The VC project files have been updated. All 15636makefiles will require modification. 15637 15638The parser/interpreter integration continues in Phase 5 with the 15639implementation of a complete 2-pass parse (the AML is parsed 15640twice) for each table; This avoids the construction of a huge 15641parse tree and therefore reduces the amount of dynamic memory 15642required by the subsystem. Greater use of the parse object cache 15643means that performance is unaffected. 15644 15645Many comments from the two code reviews have been rolled in. 15646 15647The 64-bit alignment support is complete. 15648 15649------------------------------------------- 15650Summary of changes for this label: 06_30_00 15651 15652With a nod and a tip of the hat to the technology of yesteryear, 15653we've added support in the source code for 80 column output 15654devices. The code is now mostly constrained to 80 columns or 15655less to support environments and editors that 1) cannot display 15656or print more than 80 characters on a single line, and 2) cannot 15657disable line wrapping. 15658 15659A major restructuring of the namespace data structure has been 15660completed. The result is 1) cleaner and more 15661understandable/maintainable code, and 2) a significant reduction 15662in the dynamic memory requirement for each named ACPI object 15663(almost half). 15664 15665------------------------------------------- 15666Summary of changes for this label: 06_23_00 15667 15668Linux support has been added. In order to obtain approval to get 15669the ACPI CA subsystem into the Linux kernel, we've had to make 15670quite a few changes to the base subsystem that will affect all 15671users (all the changes are generic and OS- independent). The 15672effects of these global changes have been somewhat far reaching. 15673Files have been merged and/or renamed and interfaces have been 15674renamed. The major changes are described below. 15675 15676Osd* interfaces renamed to AcpiOs* to eliminate namespace 15677pollution/confusion within our target kernels. All OSD 15678interfaces must be modified to match the new naming convention. 15679 15680Files merged across the subsystem. A number of the smaller source 15681and header files have been merged to reduce the file count and 15682increase the density of the existing files. There are too many 15683to list here. In general, makefiles that call out individual 15684files will require rebuilding. 15685 15686Interpreter files renamed. All interpreter files now have the 15687prefix am* instead of ie* and is*. 15688 15689Header files renamed: The acapi.h file is now acpixf.h. The 15690acpiosd.h file is now acpiosxf.h. We are removing references to 15691the acronym "API" since it is somewhat windowsy. The new name is 15692"external interface" or xface or xf in the filenames.j 15693 15694 15695All manifest constants have been forced to upper case (some were 15696mixed case.) Also, the string "ACPI_" has been prepended to many 15697(not all) of the constants, typedefs, and structs. 15698 15699The globals "DebugLevel" and "DebugLayer" have been renamed 15700"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 15701 15702All other globals within the subsystem are now prefixed with 15703"AcpiGbl_" Internal procedures within the subsystem are now 15704prefixed with "Acpi" (with only a few exceptions). The original 15705two-letter abbreviation for the subcomponent remains after "Acpi" 15706- for example, CmCallocate became AcpiCmCallocate. 15707 15708Added a source code translation/conversion utility. Used to 15709generate the Linux source code, it can be modified to generate 15710other types of source as well. Can also be used to cleanup 15711existing source by removing extraneous spaces and blank lines. 15712Found in tools/acpisrc/* 15713 15714OsdUnMapMemory was renamed to OsdUnmapMemory and then 15715AcpiOsUnmapMemory. (UnMap became Unmap). 15716 15717A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 15718When set to one, this indicates that the caller wants to use the 15719 15720semaphore as a mutex, not a counting semaphore. ACPI CA uses 15721both types. However, implementers of this call may want to use 15722different OS primitives depending on the type of semaphore 15723requested. For example, some operating systems provide separate 15724 15725"mutex" and "semaphore" interfaces - where the mutex interface is 15726much faster because it doesn't have all the overhead of a full 15727semaphore implementation. 15728 15729Fixed a deadlock problem where a method that accesses the PCI 15730address space can block forever if it is the first access to the 15731space. 15732 15733------------------------------------------- 15734Summary of changes for this label: 06_02_00 15735 15736Support for environments that cannot handle unaligned data 15737accesses (e.g. firmware and OS environments devoid of alignment 15738handler technology namely SAL/EFI and the IA-64 Linux kernel) has 15739been added (via configurable macros) in these three areas: - 15740Transfer of data from the raw AML byte stream is done via byte 15741moves instead of word/dword/qword moves. - External objects are 15742aligned within the user buffer, including package elements (sub- 15743objects). - Conversion of name strings to UINT32 Acpi Names is now 15744done byte-wise. 15745 15746The Store operator was modified to mimic Microsoft's 15747implementation when storing to a Buffer Field. 15748 15749Added a check of the BM_STS bit before entering C3. 15750 15751The methods subdirectory has been obsoleted and removed. A new 15752file, cmeval.c subsumes the functionality. 15753 15754A 16-bit (DOS) version of AcpiExec has been developed. The 15755makefile is under the acpiexec directory. 15756