1---------------------------------------- 230 September 2015. Summary of changes for version 20150930: 3 41) ACPICA kernel-resident subsystem: 5 6Debugger: Implemented several changes and bug fixes to assist support for 7the in-kernel version of the AML debugger. Lv Zheng. 8- Fix the "predefined" command for in-kernel debugger. 9- Do not enter debug command loop for the help and version commands. 10- Disallow "execute" command during execution/single-step of a method. 11 12Interpreter: Updated runtime typechecking for all operators that have 13target operands. The operand is resolved and validated that it is legal. 14For example, the target cannot be a non-data object such as a Device, 15Mutex, ThermalZone, etc., as per the ACPI specification. 16 17Debugger: Fixed the double-mutex user I/O handshake to work when local 18deadlock detection is enabled. 19 20Debugger: limited display of method locals and arguments (LocalX and 21ArgX) to only those that have actually been initialized. This prevents 22lines of extraneous output. 23 24Updated the definition of the NFIT table to correct the bit polarity of 25one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 26 27Example Code and Data Size: These are the sizes for the OS-independent 28acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 29debug version of the code includes the debug output trace mechanism and 30has a much larger code and data size. 31 32 Current Release: 33 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 34 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 35 Previous Release: 36 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 37 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 38 39 402) iASL Compiler/Disassembler and Tools: 41 42iASL: Improved the compile-time typechecking for operands of many of the 43ASL operators: 44 45-- Added an option to disable compiler operand/operator typechecking (- 46ot). 47 48-- For the following operators, the TermArg operands are now validated 49when possible to be Integer data objects: BankField, OperationRegion, 50DataTableRegion, Buffer, and Package. 51 52-- Store (Source, Target): Both the source and target operands are 53resolved and checked that the operands are both legal. For example, 54neither operand can be a non-data object such as a Device, Mutex, 55ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 56operator can be used to store an object to any type of target object. 57 58-- Store (Source, Target): If the source is a Package object, the target 59must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 60is a Package, the source must also be a Package. 61 62-- Store (Source, Target): A warning is issued if the source and target 63resolve to the identical named object. 64 65-- Store (Source, <method invocation>): An error is generated for the 66target method invocation, as this construct is not supported by the AML 67interpreter. 68 69-- For all ASL math and logic operators, the target operand must be a 70data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 71includes the function return value also. 72 73-- External declarations are also included in the typechecking where 74possible. External objects defined using the UnknownObj keyword cannot be 75typechecked, however. 76 77iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 78operator: 79- Legacy code: Index(PKG1, 3) 80- New ASL+ code: PKG1[3] 81This completes the ACPI 6.0 ASL+ support as it was the only operator not 82supported. 83 84iASL: Fixed the file suffix for the preprocessor output file (.i). Two 85spaces were inadvertently appended to the filename, causing file access 86and deletion problems on some systems. 87 88ASL Test Suite (ASLTS): Updated the master makefile to generate all 89possible compiler output files when building the test suite -- thus 90exercising these features of the compiler. These files are automatically 91deleted when the test suite exits. 92 93---------------------------------------- 9418 August 2015. Summary of changes for version 20150818: 95 961) ACPICA kernel-resident subsystem: 97 98Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 99Zheng. ACPICA BZ 1186. 100 101Completed development to ensure that the ACPICA Disassembler and Debugger 102are fully standalone components of ACPICA. Removed cross-component 103dependences. Lv Zheng. 104 105The max-number-of-AML-loops is now runtime configurable (previously was 106compile-time only). This is essentially a loop timeout to force-abort 107infinite AML loops. ACPCIA BZ 1192. 108 109Debugger: Cleanup output to dump ACPI names and namepaths without any 110trailing underscores. Lv Zheng. ACPICA BZ 1135. 111 112Removed unnecessary conditional compilations across the Debugger and 113Disassembler components where entire modules could be left uncompiled. 114 115The aapits test is deprecated and has been removed from the ACPICA git 116tree. The test has never been completed and has not been maintained, thus 117becoming rather useless. ACPICA BZ 1015, 794. 118 119A batch of small changes to close bugzilla and other reports: 120- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 121- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 122- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 123- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 124Moore. 125- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 126ACPICA BZ 1184. 127- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 128operators. 129- Debugger: Split debugger initialization/termination interfaces. Lv 130Zheng. 131- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 132identification. 133- AcpiExec: Add debug message during _REG method phase during table 134load/init. 135- AcpiNames: Fix a regression where some output was missing and no longer 136emitted. 137- Debugger: General cleanup and simplification. Lv Zheng. 138- Disassembler: Cleanup use of several global option variables. Lv Zheng. 139 140Example Code and Data Size: These are the sizes for the OS-independent 141acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 142debug version of the code includes the debug output trace mechanism and 143has a much larger code and data size. 144 145 Current Release: 146 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 147 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 148 Previous Release: 149 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 150 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 151 152 1532) iASL Compiler/Disassembler and Tools: 154 155AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 156were not handled properly and caused load errors. Now, properly invoke 157and use the ACPICA auto-reallocate mechanism for ACPI table data 158structures. ACPICA BZ 1188 159 160AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 161BZ 1190. 162 163AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 164AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 165executed during initialization. ACPICA BZ 1187, 1189. 166 167iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 168that corresponds to each disassembled ASL statement, to simplify 169debugging. ACPICA BZ 1191. 170 171Debugger: Add option to the "objects" command to display a summary of the 172current namespace objects (Object type and count). This is displayed if 173the command is entered with no arguments. 174 175AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 176 177---------------------------------------- 17817 July 2015. Summary of changes for version 20150717: 179 1801) ACPICA kernel-resident subsystem: 181 182Improved the partitioning between the Debugger and Disassembler 183components. This allows the Debugger to be used standalone within kernel 184code without the Disassembler (which is used for single stepping also). 185This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 186 187Debugger: Implemented a new command to trace the execution of control 188methods (Trace). This is especially useful for the in-kernel version of 189the debugger when file I/O may not be available for method trace output. 190See the ACPICA reference for more information. Lv Zheng. 191 192Moved all C library prototypes (used for the local versions of these 193functions when requested) to a new header, acclib.h 194Cleaned up the use of non-ANSI C library functions. These functions are 195implemented locally in ACPICA. Moved all such functions to a common 196source file, utnonansi.c 197 198Debugger: Fixed a problem with the "!!" command (get last command 199executed) where the debugger could enter an infinite loop and eventually 200crash. 201 202Removed the use of local macros that were used for some of the standard C 203library functions to automatically cast input parameters. This mostly 204affected the is* functions where the input parameter is defined to be an 205int. This required a few modifications to the main ACPICA source code to 206provide casting for these functions and eliminate possible compiler 207warnings for these parameters. 208 209Across the source code, added additional status/error checking to resolve 210issues discovered by static source code analysis tools such as Coverity. 211 212Example Code and Data Size: These are the sizes for the OS-independent 213acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 214debug version of the code includes the debug output trace mechanism and 215has a much larger code and data size. 216 217 Current Release: 218 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 219 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 220 Previous Release: 221 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 222 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 223 224 2252) iASL Compiler/Disassembler and Tools: 226 227iASL: Fixed a regression where the device map file feature no longer 228worked properly when used in conjunction with the disassembler. It only 229worked properly with the compiler itself. 230 231iASL: Implemented a new warning for method LocalX variables that are set 232but never used (similar to a C compiler such as gcc). This also applies 233to ArgX variables that are not defined by the parent method, and are 234instead (legally) used as local variables. 235 236iASL/Preprocessor: Finished the pass-through of line numbers from the 237preprocessor to the compiler. This ensures that compiler errors/warnings 238have the correct original line numbers and filenames, regardless of any 239#include files. 240 241iASL/Preprocessor: Fixed a couple of issues with comment handling and the 242pass-through of comments to the preprocessor output file (which becomes 243the compiler input file). Also fixed a problem with // comments that 244appear after a math expression. 245 246iASL: Added support for the TCPA server table to the table compiler and 247template generator. (The client table was already previously supported) 248 249iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 250identify the iASL compiler. 251 252Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 253multiple times. The new names are ACPI_SIGN_NEGATIVE and 254ACPI_SIGN_POSITIVE. 255 256AcpiHelp: Update to expand help messages for the iASL preprocessor 257directives. 258 259 260---------------------------------------- 26119 June 2015. Summary of changes for version 20150619: 262 263Two regressions in version 20150616 have been addressed: 264 265Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 266etc.) This update changes ACPICA to only use the standard headers for 267functions, or the prototypes for the local versions of the C library 268functions. Across the source code, this required some additional casts 269for some Clib invocations for portability. Moved all local prototypes to 270a new file, acclib.h 271 272Fixes several problems with recent changes to the handling of the FACS 273table that could cause some systems not to boot. 274 275 276---------------------------------------- 27716 June 2015. Summary of changes for version 20150616: 278 279 2801) ACPICA kernel-resident subsystem: 281 282Across the entire ACPICA source code base, the various macros for the C 283library functions (such as ACPI_STRLEN, etc.) have been removed and 284replaced by the standard C library names (strlen, etc.) The original 285purpose for these macros is no longer applicable. This simplification 286reduces the number of macros used in the ACPICA source code 287significantly, improving readability and maintainability. 288 289Implemented support for a new ACPI table, the OSDT. This table, the 290"override" SDT, can be loaded directly by the host OS at boot time. It 291enables the replacement of existing namespace objects that were installed 292via the DSDT and/or SSDTs. The primary purpose for this is to replace 293buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 294for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 295Moore. 296 297Added support for systems with (improperly) two FACS tables -- a "32-bit" 298table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 299X field). This change will support both automatically. There continues to 300be systems found with this issue. This support requires a change to the 301AcpiSetFirmwareWakingVector interface. Also, a public global variable has 302been added to allow the host to select which FACS is desired 303(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 304details Lv Zheng. 305 306Added a new feature to allow for systems that do not contain an FACS. 307Although this is already supported on hardware-reduced platforms, the 308feature has been extended for all platforms. The reasoning is that we do 309not want to abort the entire ACPICA initialization just because the 310system is seriously buggy and has no FACS. 311 312Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 313not correctly transcribed from the ACPI specification in ACPICA version 31420150515. 315 316Implemented support for the _CLS object in the AcpiGetObjectInfo external 317interface. 318 319Updated the definitions of the TCPA and TPM2 ACPI tables to the more 320recent TCG ACPI Specification, December 14, 2014. Table disassembler and 321compiler also updated. Note: The TCPA "server" table is not supported by 322the disassembler/table-compiler at this time. 323 324ACPI 6.0: Added definitions for the new GIC version field in the MADT. 325 326Example Code and Data Size: These are the sizes for the OS-independent 327acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 328debug version of the code includes the debug output trace mechanism and 329has a much larger code and data size. 330 331 Current Release: 332 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 333 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 334 Previous Release: 335 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 336 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 337 338 3392) iASL Compiler/Disassembler and Tools: 340 341Disassembler: Fixed a problem with the new symbolic operator disassembler 342where incorrect ASL code could be emitted in some cases for the "non- 343commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 344ShiftRight. The actual problem cases seem to be rather unusual in common 345ASL code, however. David Box. 346 347Modified the linux version of acpidump to obtain ACPI tables from not 348just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 349Zheng. 350 351iASL: Fixed a problem where the user preprocessor output file (.i) 352contained extra data that was not expected. The compiler was using this 353file as a temporary file and passed through #line directives in order to 354keep compiler error messages in sync with the input file and line number 355across multiple include files. The (.i) is no longer a temporary file as 356the compiler uses a new, different file for the original purpose. 357 358iASL: Fixed a problem where comments within the original ASL source code 359file were not passed through to the preprocessor output file, nor any 360listing files. 361 362iASL: Fixed some issues for the handling of the "#include" preprocessor 363directive and the similar (but not the same) "Include" ASL operator. 364 365iASL: Add support for the new OSDT in both the disassembler and compiler. 366 367iASL: Fixed a problem with the constant folding support where a Buffer 368object could be incorrectly generated (incorrectly formed) during a 369conversion to a Store() operator. 370 371AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 372description text for the _REV predefined name. _REV now permanently 373returns 2, as per the ACPI 6.0 specification. 374 375Debugger: Enhanced the output of the Debug ASL object for references 376produced by the Index operator. For Buffers and strings, only output the 377actual byte pointed to by the index. For packages, only print the single 378package element decoded by the index. Previously, the entire 379buffer/string/package was emitted. 380 381iASL/Table-compiler: Fixed a regression where the "generic" data types 382were no longer recognized, causing errors. 383 384 385---------------------------------------- 38615 May 2015. Summary of changes for version 20150515: 387 388This release implements most of ACPI 6.0 as described below. 389 3901) ACPICA kernel-resident subsystem: 391 392Implemented runtime argument checking and return value checking for all 393new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 394_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 395 396Example Code and Data Size: These are the sizes for the OS-independent 397acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 398debug version of the code includes the debug output trace mechanism and 399has a much larger code and data size. 400 401 Current Release: 402 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 403 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 404 Previous Release: 405 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 406 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 407 408 4092) iASL Compiler/Disassembler and Tools: 410 411iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 412names (argument count validation and return value typechecking.) 413 414iASL disassembler and table compiler: implemented support for all new 415ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 416 417iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 418tables: FADT, MADT. 419 420iASL preprocessor: Added a new directive to enable inclusion of binary 421blobs into ASL code. The new directive is #includebuffer. It takes a 422binary file as input and emits a named ascii buffer object into the ASL 423code. 424 425AcpiHelp: Added support for all new ACPI 6.0 predefined names. 426 427AcpiHelp: Added a new option, -d, to display all iASL preprocessor 428directives. 429 430AcpiHelp: Added a new option, -t, to display all known/supported ACPI 431tables. 432 433---------------------------------------- 43410 April 2015. Summary of changes for version 20150410: 435 436Reverted a change introduced in version 20150408 that caused 437a regression in the disassembler where incorrect operator 438symbols could be emitted. 439 440---------------------------------------- 44108 April 2015. Summary of changes for version 20150408: 442 443 4441) ACPICA kernel-resident subsystem: 445 446Permanently set the return value for the _REV predefined name. It now 447returns 2 (was 5). This matches other ACPI implementations. _REV will be 448deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 449for ACPI 2.0 and later. It should never be used to differentiate or 450identify operating systems. 451 452Added the "Windows 2015" string to the _OSI support. ACPICA will now 453return TRUE to a query with this string. 454 455Fixed several issues with the local version of the printf function. 456 457Added the C99 compiler option (-std=c99) to the Unix makefiles. 458 459 Current Release: 460 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 461 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 462 Previous Release: 463 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 464 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 465 466 4672) iASL Compiler/Disassembler and Tools: 468 469iASL: Implemented an enhancement to the constant folding feature to 470transform the parse tree to a simple Store operation whenever possible: 471 Add (2, 3, X) ==> is converted to: Store (5, X) 472 X = 2 + 3 ==> is converted to: Store (5, X) 473 474Updated support for the SLIC table (Software Licensing Description Table) 475in both the Data Table compiler and the disassembler. The SLIC table 476support now conforms to "Microsoft Software Licensing Tables (SLIC and 477MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 478following the ACPI header is now defined to be "Proprietary Data", and as 479such, can only be entered or displayed as a hex data block. 480 481Implemented full support for the MSDM table as described in the document 482above. Note: The format of MSDM is similar to SLIC. Any MSDM data 483following the ACPI header is defined to be "Proprietary Data", and can 484only be entered or displayed as a hex data block. 485 486Implemented the -Pn option for the iASL Table Compiler (was only 487implemented for the ASL compiler). This option disables the iASL 488preprocessor. 489 490Disassembler: For disassembly of Data Tables, added a comment field 491around the Ascii equivalent data that is emitted as part of the "Raw 492Table Data" block. This prevents the iASL Preprocessor from possible 493confusion if/when the table is compiled. 494 495Disassembler: Added an option (-df) to force the disassembler to assume 496that the table being disassembled contains valid AML. This feature is 497useful for disassembling AML files that contain ACPI signatures other 498than DSDT or SSDT (such as OEMx or other signatures). 499 500Changes for the EFI version of the tools: 5011) Fixed a build error/issue 5022) Fixed a cast warning 503 504iASL: Fixed a path issue with the __FILE__ operator by making the 505directory prefix optional within the internal SplitInputFilename 506function. 507 508Debugger: Removed some unused global variables. 509 510Tests: Updated the makefile for proper generation of the AAPITS suite. 511 512---------------------------------------- 51304 February 2015. Summary of changes for version 20150204: 514 515ACPICA kernel-resident subsystem: 516 517Updated all ACPICA copyrights and signons to 2014. Added the 2014 518copyright to all module headers and signons, including the standard Linux 519header. This affects virtually every file in the ACPICA core subsystem, 520iASL compiler, all ACPICA utilities, and the test suites. 521 522Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 523A raw gpe handling mechanism was created to allow better handling of GPE 524storms that aren't easily managed by the normal handler. The raw handler 525allows disabling/renabling of the the GPE so that interrupt storms can be 526avoided in cases where events cannot be timely serviced. In this 527scenario, handlers should use the AcpiSetGpe() API to disable/enable the 528GPE. This API will leave the reference counts undisturbed, thereby 529preventing unintentional clearing of the GPE when the intent in only to 530temporarily disable it. Raw handlers allow enabling and disabling of a 531GPE by removing GPE register locking. As such, raw handlers much provide 532their own locks while using GPE API's to protect access to GPE data 533structures. 534Lv Zheng 535 536Events: Always modify GPE registers under the GPE lock. 537Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 538values. Reported as bug by joe.liu@apple.com. 539 540Unix makefiles: Separate option to disable optimizations and 541_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 542NOOPT disable option and creates a separate flag (NOFORTIFY) for this 543purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 544errors when building ACPICA. This allows disabling the option without 545also having to disable optimazations. 546David Box 547 548 Current Release: 549 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 550 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 551 552---------------------------------------- 55307 November 2014. Summary of changes for version 20141107: 554 555This release is available at https://acpica.org/downloads 556 557This release introduces and implements language extensions to ASL that 558provide support for symbolic ("C-style") operators and expressions. These 559language extensions are known collectively as ASL+. 560 561 5621) iASL Compiler/Disassembler and Tools: 563 564Disassembler: Fixed a problem with disassembly of the UartSerialBus 565macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 566Box. 567 568Disassembler: Fixed the Unicode macro support to add escape sequences. 569All non-printable ASCII values are emitted as escape sequences, as well 570as the standard escapes for quote and backslash. Ensures that the 571disassembled macro can be correctly recompiled. 572 573iASL: Added Printf/Fprintf macros for formatted output. These macros are 574translated to existing AML Concatenate and Store operations. Printf 575writes to the ASL Debug object. Fprintf allows the specification of an 576ASL name as the target. Only a single format specifier is required, %o, 577since the AML interpreter dynamically converts objects to the required 578type. David E. Box. 579 580 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 581 (Concatenate (Concatenate (Concatenate ("", Arg0), 582 ": Unexpected value for "), Arg1), ", "), Arg2), 583 " at line "), Arg3), Debug) 584 585 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 586 Arg0, Arg1, Arg2, Arg3) 587 588 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 589 ("", Arg1), ": "), Arg0), " Successful"), STR1) 590 591 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 592 593iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 594ASL parse tree before the AML code is generated. This allows blocks of 595ASL code to be removed in order to help locate and identify problem 596devices and/or code. David E. Box. 597 598AcpiExec: Added support (-fi) for an optional namespace object 599initialization file. This file specifies initial values for namespace 600objects as necessary for debugging and testing different ASL code paths 601that may be taken as a result of BIOS options. 602 603 6042) Overview of symbolic operator support for ASL (ASL+) 605------------------------------------------------------- 606 607As an extension to the ASL language, iASL implements support for symbolic 608(C-style) operators for math and logical expressions. This can greatly 609simplify ASL code as well as improve both readability and 610maintainability. These language extensions can exist concurrently with 611all legacy ASL code and expressions. 612 613The symbolic extensions are 100% compatible with existing AML 614interpreters, since no new AML opcodes are created. To implement the 615extensions, the iASL compiler transforms the symbolic expressions into 616the legacy ASL/AML equivalents at compile time. 617 618Full symbolic expressions are supported, along with the standard C 619precedence and associativity rules. 620 621Full disassembler support for the symbolic expressions is provided, and 622creates an automatic migration path for existing ASL code to ASL+ code 623via the disassembly process. By default, the disassembler now emits ASL+ 624code with symbolic expressions. An option (-dl) is provided to force the 625disassembler to emit legacy ASL code if desired. 626 627Below is the complete list of the currently supported symbolic operators 628with examples. See the iASL User Guide for additional information. 629 630 631ASL+ Syntax Legacy ASL Equivalent 632----------- --------------------- 633 634 // Math operators 635 636Z = X + Y Add (X, Y, Z) 637Z = X - Y Subtract (X, Y, Z) 638Z = X * Y Multiply (X, Y, Z) 639Z = X / Y Divide (X, Y, , Z) 640Z = X % Y Mod (X, Y, Z) 641Z = X << Y ShiftLeft (X, Y, Z) 642Z = X >> Y ShiftRight (X, Y, Z) 643Z = X & Y And (X, Y, Z) 644Z = X | Y Or (X, Y, Z) 645Z = X ^ Y Xor (X, Y, Z) 646Z = ~X Not (X, Z) 647X++ Increment (X) 648X-- Decrement (X) 649 650 // Logical operators 651 652(X == Y) LEqual (X, Y) 653(X != Y) LNotEqual (X, Y) 654(X < Y) LLess (X, Y) 655(X > Y) LGreater (X, Y) 656(X <= Y) LLessEqual (X, Y) 657(X >= Y) LGreaterEqual (X, Y) 658(X && Y) LAnd (X, Y) 659(X || Y) LOr (X, Y) 660(!X) LNot (X) 661 662 // Assignment and compound assignment operations 663 664X = Y Store (Y, X) 665X += Y Add (X, Y, X) 666X -= Y Subtract (X, Y, X) 667X *= Y Multiply (X, Y, X) 668X /= Y Divide (X, Y, , X) 669X %= Y Mod (X, Y, X) 670X <<= Y ShiftLeft (X, Y, X) 671X >>= Y ShiftRight (X, Y, X) 672X &= Y And (X, Y, X) 673X |= Y Or (X, Y, X) 674X ^= Y Xor (X, Y, X) 675 676 6773) ASL+ Examples: 678----------------- 679 680Legacy ASL: 681 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 682 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 6830x03FB), 684 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 685 { 686 And (MEMB, 0xFFFFFFF0, SRMB) 687 Store (MEMB, Local2) 688 Store (PDBM, Local1) 689 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 690 Store (SRMB, MEMB) 691 Or (PDBM, 0x02, PDBM) 692 } 693 694ASL+ version: 695 If (((R510 & 0x03FB) == 0x02E0) || 696 ((R520 & 0x03FB) == 0x02E0) || 697 ((R530 & 0x03FB) == 0x02E0) || 698 ((R540 & 0x03FB) == 0x02E0)) 699 { 700 SRMB = (MEMB & 0xFFFFFFF0) 701 Local2 = MEMB 702 Local1 = PDBM 703 PDBM &= 0xFFFFFFFFFFFFFFF9 704 MEMB = SRMB 705 PDBM |= 0x02 706 } 707 708Legacy ASL: 709 Store (0x1234, Local1) 710 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 711 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 712 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 713 Store (Index (PKG1, 0x03), Local6) 714 Store (Add (Local3, Local2), Debug) 715 Add (Local1, 0x0F, Local2) 716 Add (Local1, Multiply (Local2, Local3), Local2) 717 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 718 719ASL+ version: 720 Local1 = 0x1234 721 Local3 = (((Local1 + TEST) + 0x20) * Local2) 722 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 723 Local3 = (Local1 + (TEST + (0x20 * Local2))) 724 Local6 = Index (PKG1, 0x03) 725 Debug = (Local3 + Local2) 726 Local2 = (Local1 + 0x0F) 727 Local2 = (Local1 + (Local2 * Local3)) 728 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 729 730 731---------------------------------------- 73226 September 2014. Summary of changes for version 20140926: 733 7341) ACPICA kernel-resident subsystem: 735 736Updated the GPIO operation region handler interface (GeneralPurposeIo). 737In order to support GPIO Connection objects with multiple pins, along 738with the related Field objects, the following changes to the interface 739have been made: The Address is now defined to be the offset in bits of 740the field unit from the previous invocation of a Connection. It can be 741viewed as a "Pin Number Index" into the connection resource descriptor. 742The BitWidth is the exact bit width of the field. It is usually one bit, 743but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 744additional information and examples. 745 746GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 747corresponding _Lxx/_Exx methods are disabled (they may have been enabled 748by the firmware), so that they cannot fire until they are enabled via 749AcpiUpdateAllGpes. Rafael J. Wysocki. 750 751Added a new return flag for the Event/GPE status interfaces -- 752AcpiGetEventStatus and AcpiGetGpeStatus. The new 753ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 754GPE currently has a handler associated with it, and can thus actually 755affect the system. Lv Zheng. 756 757Example Code and Data Size: These are the sizes for the OS-independent 758acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 759debug version of the code includes the debug output trace mechanism and 760has a much larger code and data size. 761 762 Current Release: 763 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 764 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 765 Previous Release: 766 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 767 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 768 7692) iASL Compiler/Disassembler and Tools: 770 771iASL: Fixed a memory allocation/free regression introduced in 20140828 772that could cause the compiler to crash. This was introduced inadvertently 773during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 7741113. 775 776iASL: Removed two error messages that have been found to create false 777positives, until they can be fixed and fully validated (ACPICA BZ 1112): 7781) Illegal forward reference within a method 7792) Illegal reference across two methods 780 781iASL: Implemented a new option (-lm) to create a hardware mapping file 782that summarizes all GPIO, I2C, SPI, and UART connections. This option 783works for both the compiler and disassembler. See the iASL compiler user 784guide for additional information and examples (section 6.4.6). 785 786AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 787version 2. This corrects the AE_BAD_HEADER exception seen on systems with 788a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 789 790AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 791unless STDIN is actually a terminal. Assists with batch-mode processing. 792ACPICA BZ 1114. 793 794Disassembler/AcpiHelp: Added another large group of recognized _HID 795values. 796 797 798---------------------------------------- 79928 August 2014. Summary of changes for version 20140828: 800 8011) ACPICA kernel-resident subsystem: 802 803Fixed a problem related to the internal use of the Timer() operator where 804a 64-bit divide could cause an attempted link to a double-precision math 805library. This divide is not actually necessary, so the code was 806restructured to eliminate it. Lv Zheng. 807 808ACPI 5.1: Added support for the runtime validation of the _DSD package 809(similar to the iASL support). 810 811ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 812SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 813 814Example Code and Data Size: These are the sizes for the OS-independent 815acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 816debug version of the code includes the debug output trace mechanism and 817has a much larger code and data size. 818 819 Current Release: 820 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 821 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 822 Previous Release: 823 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 824 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 825 8262) iASL Compiler/Disassembler and Tools: 827 828AcpiExec: Fixed a problem on unix systems where the original terminal 829state was not always properly restored upon exit. Seen when using the -v 830option. ACPICA BZ 1104. 831 832iASL: Fixed a problem with the validation of the ranges/length within the 833Memory24 resource descriptor. There was a boundary condition when the 834range was equal to the (length -1) caused by the fact that these values 835are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 836 837Disassembler: Fixed a problem with the GpioInt descriptor interrupt 838polarity 839flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 840is 841now supported properly. 842 843ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 844in the disassembler, data table compiler, and table template generator. 845 846iASL: Added a requirement for Device() objects that one of either a _HID 847or _ADR must exist within the scope of a Device, as per the ACPI 848specification. Remove a similar requirement that was incorrectly in place 849for the _DSD object. 850 851iASL: Added error detection for illegal named references within control 852methods that would cause runtime failures. Now trapped as errors are: 1) 853References to objects within a non-parent control method. 2) Forward 854references (within a method) -- for control methods, AML interpreters use 855a one-pass parse of control methods. ACPICA BZ 1008. 856 857iASL: Added error checking for dependencies related to the _PSx power 858methods. ACPICA BZ 1029. 8591) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 860_PS3. 8612) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 862scope. 863 864iASL and table compiler: Cleanup miscellaneous memory leaks by fully 865deploying the existing object and string caches and adding new caches for 866the table compiler. 867 868iASL: Split the huge parser source file into multiple subfiles to improve 869manageability. Generation now requires the M4 macro preprocessor, which 870is part of the Bison distribution on both unix and windows platforms. 871 872AcpiSrc: Fixed and removed all extraneous warnings generated during 873entire ACPICA source code scan and/or conversion. 874 875 876---------------------------------------- 877 87824 July 2014. Summary of changes for version 20140724: 879 880The ACPI 5.1 specification has been released and is available at: 881http://uefi.org/specs/access 882 883 8840) ACPI 5.1 support in ACPICA: 885 886ACPI 5.1 is fully supported in ACPICA as of this release. 887 888New predefined names. Support includes iASL and runtime ACPICA 889validation. 890 _CCA (Cache Coherency Attribute). 891 _DSD (Device-Specific Data). David Box. 892 893Modifications to existing ACPI tables. Support includes headers, iASL 894Data Table compiler, disassembler, and the template generator. 895 FADT - New fields and flags. Graeme Gregory. 896 GTDT - One new subtable and new fields. Tomasz Nowicki. 897 MADT - Two new subtables. Tomasz Nowicki. 898 PCCT - One new subtable. 899 900Miscellaneous. 901 New notification type for System Resource Affinity change events. 902 903 9041) ACPICA kernel-resident subsystem: 905 906Fixed a regression introduced in 20140627 where a fault can happen during 907the deletion of Alias AML namespace objects. The problem affected both 908the core ACPICA and the ACPICA tools including iASL and AcpiExec. 909 910Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 911simple mechanism to enable wake GPEs that have no associated handler or 912control method. Rafael Wysocki. 913 914Updated the AcpiEnableGpe interface to disallow the enable if there is no 915handler or control method associated with the particular GPE. This will 916help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 917 918Updated GPE handling and dispatch by disabling the GPE before clearing 919the status bit for edge-triggered GPEs. Lv Zheng. 920 921Added Timer() support to the AML Debug object. The current timer value is 922now displayed with each invocation of (Store to) the debug object to 923enable simple generation of execution times for AML code (method 924execution for example.) ACPICA BZ 1093. 925 926Example Code and Data Size: These are the sizes for the OS-independent 927acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 928debug version of the code includes the debug output trace mechanism and 929has a much larger code and data size. 930 931 Current Release: 932 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 933 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 934 Previous Release: 935 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 936 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 937 938 9392) iASL Compiler/Disassembler and Tools: 940 941Fixed an issue with the recently added local printf implementation, 942concerning width/precision specifiers that could cause incorrect output. 943Lv Zheng. ACPICA BZ 1094. 944 945Disassembler: Added support to detect buffers that contain UUIDs and 946disassemble them to an invocation of the ToUUID operator. Also emit 947commented descriptions of known ACPI-related UUIDs. 948 949AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 950-u. Adds three new files. 951 952iASL: Update table compiler and disassembler for DMAR table changes that 953were introduced in September 2013. With assistance by David Woodhouse. 954 955---------------------------------------- 95627 June 2014. Summary of changes for version 20140627: 957 9581) ACPICA kernel-resident subsystem: 959 960Formatted Output: Implemented local versions of standard formatted output 961utilities such as printf, etc. Over time, it has been discovered that 962there are in fact many portability issues with printf, and the addition 963of this feature will fix/prevent these issues once and for all. Some 964known issues are summarized below: 965 9661) Output of 64-bit values is not portable. For example, UINT64 is %ull 967for the Linux kernel and is %uI64 for some MSVC versions. 9682) Invoking printf consistently in a manner that is portable across both 96932-bit and 64-bit platforms is difficult at best in many situations. 9703) The output format for pointers varies from system to system (leading 971zeros especially), and leads to inconsistent output from ACPICA across 972platforms. 9734) Certain platform-specific printf formats may conflict with ACPICA use. 9745) If there is no local C library available, ACPICA now has local support 975for printf. 976 977-- To address these printf issues in a complete manner, ACPICA now 978directly implements a small subset of printf format specifiers, only 979those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 980 981Implemented support for ACPICA generation within the EFI environment. 982Initially, the AcpiDump utility is supported in the UEFI shell 983environment. Lv Zheng. 984 985Added a new external interface, AcpiLogError, to improve ACPICA 986portability. This allows the host to redirect error messages from the 987ACPICA utilities. Lv Zheng. 988 989Added and deployed new OSL file I/O interfaces to improve ACPICA 990portability: 991 AcpiOsOpenFile 992 AcpiOsCloseFile 993 AcpiOsReadFile 994 AcpiOsWriteFile 995 AcpiOsGetFileOffset 996 AcpiOsSetFileOffset 997There are C library implementations of these functions in the new file 998service_layers/oslibcfs.c -- however, the functions can be implemented by 999the local host in any way necessary. Lv Zheng. 1000 1001Implemented a mechanism to disable/enable ACPI table checksum validation 1002at runtime. This can be useful when loading tables very early during OS 1003initialization when it may not be possible to map the entire table in 1004order to compute the checksum. Lv Zheng. 1005 1006Fixed a buffer allocation issue for the Generic Serial Bus support. 1007Originally, a fixed buffer length was used. This change allows for 1008variable-length buffers based upon the protocol indicated by the field 1009access attributes. Reported by Lan Tianyu. Lv Zheng. 1010 1011Fixed a problem where an object detached from a namespace node was not 1012properly terminated/cleared and could cause a circular list problem if 1013reattached. ACPICA BZ 1063. David Box. 1014 1015Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 1016 1017Fixed a possible memory leak in an error return path within the function 1018AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 1019 1020Example Code and Data Size: These are the sizes for the OS-independent 1021acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1022debug version of the code includes the debug output trace mechanism and 1023has a much larger code and data size. 1024 1025 Current Release: 1026 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1027 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1028 Previous Release: 1029 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1030 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1031 1032 10332) iASL Compiler/Disassembler and Tools: 1034 1035Disassembler: Add dump of ASCII equivalent text within a comment at the 1036end of each line of the output for the Buffer() ASL operator. 1037 1038AcpiDump: Miscellaneous changes: 1039 Fixed repetitive table dump in -n mode. 1040 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 1041the ACPI 2.0 GUID fails. 1042 1043iASL: Fixed a problem where the compiler could fault if incorrectly given 1044an acpidump output file as input. ACPICA BZ 1088. David Box. 1045 1046AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 1047they are invoked without any arguments. 1048 1049Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 10501086. Colin Ian King. 1051 1052Disassembler: Cleaned up a block of code that extracts a parent Op 1053object. Added a comment that explains that the parent is guaranteed to be 1054valid in this case. ACPICA BZ 1069. 1055 1056---------------------------------------- 105724 April 2014. Summary of changes for version 20140424: 1058 10591) ACPICA kernel-resident subsystem: 1060 1061Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 1062Some of these tables are known to contain a trailing NULL entry. Lv 1063Zheng. 1064 1065Removed an extraneous error message for the case where there are a large 1066number of system GPEs (> 124). This was the "32-bit FADT register is too 1067long to convert to GAS struct" message, which is irrelevant for GPEs 1068since the GPEx_BLK_LEN fields of the FADT are always used instead of the 1069(limited capacity) GAS bit length. Also, several changes to ensure proper 1070support for GPE numbers > 255, where some "GPE number" fields were 8-bits 1071internally. 1072 1073Implemented and deployed additional configuration support for the public 1074ACPICA external interfaces. Entire classes of interfaces can now be 1075easily modified or configured out, replaced by stubbed inline functions 1076by default. Lv Zheng. 1077 1078Moved all public ACPICA runtime configuration globals to the public 1079ACPICA external interface file for convenience. Also, removed some 1080obsolete/unused globals. See the file acpixf.h. Lv Zheng. 1081 1082Documentation: Added a new section to the ACPICA reference describing the 1083maximum number of GPEs that can be supported by the FADT-defined GPEs in 1084block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 1085reference. 1086 1087Example Code and Data Size: These are the sizes for the OS-independent 1088acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1089debug version of the code includes the debug output trace mechanism and 1090has a much larger code and data size. 1091 1092 Current Release: 1093 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1094 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1095 Previous Release: 1096 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1097 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1098 1099 11002) iASL Compiler/Disassembler and Tools: 1101 1102iASL and disassembler: Add full support for the LPIT table (Low Power 1103Idle Table). Includes support in the disassembler, data table compiler, 1104and template generator. 1105 1106AcpiDump utility: 11071) Add option to force the use of the RSDT (over the XSDT). 11082) Improve validation of the RSDP signature (use 8 chars instead of 4). 1109 1110iASL: Add check for predefined packages that are too large. For 1111predefined names that contain subpackages, check if each subpackage is 1112too large. (Check for too small already exists.) 1113 1114Debugger: Updated the GPE command (which simulates a GPE by executing the 1115GPE code paths in ACPICA). The GPE device is now optional, and defaults 1116to the GPE 0/1 FADT-defined blocks. 1117 1118Unix application OSL: Update line-editing support. Add additional error 1119checking and take care not to reset terminal attributes on exit if they 1120were never set. This should help guarantee that the terminal is always 1121left in the previous state on program exit. 1122 1123---------------------------------------- 112425 March 2014. Summary of changes for version 20140325: 1125 11261) ACPICA kernel-resident subsystem: 1127 1128Updated the auto-serialize feature for control methods. This feature 1129automatically serializes all methods that create named objects in order 1130to prevent runtime errors. The update adds support to ignore the 1131currently executing AML SyncLevel when invoking such a method, in order 1132to prevent disruption of any existing SyncLevel priorities that may exist 1133in the AML code. Although the use of SyncLevels is relatively rare, this 1134change fixes a regression where an AE_AML_MUTEX_ORDER exception can 1135appear on some machines starting with the 20140214 release. 1136 1137Added a new external interface to allow the host to install ACPI tables 1138very early, before the namespace is even created. AcpiInstallTable gives 1139the host additional flexibility for ACPI table management. Tables can be 1140installed directly by the host as if they had originally appeared in the 1141XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 1142(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 1143with additional internal restructuring and cleanup. See the ACPICA 1144Reference for interface details. Lv Zheng. 1145 1146Added validation of the checksum for all incoming dynamically loaded 1147tables (via external interfaces or via AML Load/LoadTable operators). Lv 1148Zheng. 1149 1150Updated the use of the AcpiOsWaitEventsComplete interface during Notify 1151and GPE handler removal. Restructured calls to eliminate possible race 1152conditions. Lv Zheng. 1153 1154Added a warning for the use/execution of the ASL/AML Unload (table) 1155operator. This will help detect and identify machines that use this 1156operator if and when it is ever used. This operator has never been seen 1157in the field and the usage model and possible side-effects of the drastic 1158runtime action of a full table removal are unknown. 1159 1160Reverted the use of #pragma push/pop which was introduced in the 20140214 1161release. It appears that push and pop are not implemented by enough 1162compilers to make the use of this feature feasible for ACPICA at this 1163time. However, these operators may be deployed in a future ACPICA 1164release. 1165 1166Added the missing EXPORT_SYMBOL macros for the install and remove SCI 1167handler interfaces. 1168 1169Source code generation: 11701) Disabled the use of the "strchr" macro for the gcc-specific 1171generation. For some versions of gcc, this macro can periodically expose 1172a compiler bug which in turn causes compile-time error(s). 11732) Added support for PPC64 compilation. Colin Ian King. 1174 1175Example Code and Data Size: These are the sizes for the OS-independent 1176acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1177debug version of the code includes the debug output trace mechanism and 1178has a much larger code and data size. 1179 1180 Current Release: 1181 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1182 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1183 Previous Release: 1184 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1185 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1186 1187 11882) iASL Compiler/Disassembler and Tools: 1189 1190Disassembler: Added several new features to improve the readability of 1191the resulting ASL code. Extra information is emitted within comment 1192fields in the ASL code: 11931) Known _HID/_CID values are decoded to descriptive text. 11942) Standard values for the Notify() operator are decoded to descriptive 1195text. 11963) Target operands are expanded to full pathnames (in a comment) when 1197possible. 1198 1199Disassembler: Miscellaneous updates for extern() handling: 12001) Abort compiler if file specified by -fe option does not exist. 12012) Silence unnecessary warnings about argument count mismatches. 12023) Update warning messages concerning unresolved method externals. 12034) Emit "UnknownObj" keyword for externals whose type cannot be 1204determined. 1205 1206AcpiHelp utility: 12071) Added the -a option to display both the ASL syntax and the AML 1208encoding for an input ASL operator. This effectively displays all known 1209information about an ASL operator with one AcpiHelp invocation. 12102) Added substring match support (similar to a wildcard) for the -i 1211(_HID/PNP IDs) option. 1212 1213iASL/Disassembler: Since this tool does not yet support execution on big- 1214endian machines, added detection of endianness and an error message if 1215execution is attempted on big-endian. Support for big-endian within iASL 1216is a feature that is on the ACPICA to-be-done list. 1217 1218AcpiBin utility: 12191) Remove option to extract binary files from an acpidump; this function 1220is made obsolete by the AcpiXtract utility. 12212) General cleanup of open files and allocated buffers. 1222 1223---------------------------------------- 122414 February 2014. Summary of changes for version 20140214: 1225 12261) ACPICA kernel-resident subsystem: 1227 1228Implemented a new mechanism to proactively prevent problems with ill- 1229behaved reentrant control methods that create named ACPI objects. This 1230behavior is illegal as per the ACPI specification, but is nonetheless 1231frequently seen in the field. Previously, this could lead to an 1232AE_ALREADY_EXISTS exception if the method was actually entered by more 1233than one thread. This new mechanism detects such methods at table load 1234time and marks them "serialized" to prevent reentrancy. A new global 1235option, AcpiGbl_AutoSerializeMethods, has been added to disable this 1236feature if desired. This mechanism and global option obsoletes and 1237supersedes the previous AcpiGbl_SerializeAllMethods option. 1238 1239Added the "Windows 2013" string to the _OSI support. ACPICA will now 1240respond TRUE to _OSI queries with this string. It is the stated policy of 1241ACPICA to add new strings to the _OSI support as soon as possible after 1242they are defined. See the full ACPICA _OSI policy which has been added to 1243the utilities/utosi.c file. 1244 1245Hardened/updated the _PRT return value auto-repair code: 12461) Do not abort the repair on a single subpackage failure, continue to 1247check all subpackages. 12482) Add check for the minimum subpackage length (4). 12493) Properly handle extraneous NULL package elements. 1250 1251Added support to avoid the possibility of infinite loops when traversing 1252object linked lists. Never allow an infinite loop, even in the face of 1253corrupted object lists. 1254 1255ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 1256pack(pop) directives to ensure that the ACPICA headers are independent of 1257compiler settings or other host headers. 1258 1259Example Code and Data Size: These are the sizes for the OS-independent 1260acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1261debug version of the code includes the debug output trace mechanism and 1262has a much larger code and data size. 1263 1264 Current Release: 1265 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1266 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1267 Previous Release: 1268 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1269 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1270 1271 12722) iASL Compiler/Disassembler and Tools: 1273 1274iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 1275first reserved field was incorrectly forced to have a value of zero. This 1276change correctly forces the field to have a value of one. ACPICA BZ 1081. 1277 1278Debugger: Added missing support for the "Extra" and "Data" subobjects 1279when displaying object data. 1280 1281Debugger: Added support to display entire object linked lists when 1282displaying object data. 1283 1284iASL: Removed the obsolete -g option to obtain ACPI tables from the 1285Windows registry. This feature has been superseded by the acpidump 1286utility. 1287 1288---------------------------------------- 128914 January 2014. Summary of changes for version 20140114: 1290 12911) ACPICA kernel-resident subsystem: 1292 1293Updated all ACPICA copyrights and signons to 2014. Added the 2014 1294copyright to all module headers and signons, including the standard Linux 1295header. This affects virtually every file in the ACPICA core subsystem, 1296iASL compiler, all ACPICA utilities, and the test suites. 1297 1298Improved parameter validation for AcpiInstallGpeBlock. Added the 1299following checks: 13001) The incoming device handle refers to type ACPI_TYPE_DEVICE. 13012) There is not already a GPE block attached to the device. 1302Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 1303device. 1304 1305Correctly support "references" in the ACPI_OBJECT. This change fixes the 1306support to allow references (namespace nodes) to be passed as arguments 1307to control methods via the evaluate object interface. This is probably 1308most useful for testing purposes, however. 1309 1310Improved support for 32/64 bit physical addresses in printf()-like 1311output. This change improves the support for physical addresses in printf 1312debug statements and other output on both 32-bit and 64-bit hosts. It 1313consistently outputs the appropriate number of bytes for each host. The 1314%p specifier is unsatisfactory since it does not emit uniform output on 1315all hosts/clib implementations (on some, leading zeros are not supported, 1316leading to difficult-to-read output). 1317 1318Example Code and Data Size: These are the sizes for the OS-independent 1319acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1320debug version of the code includes the debug output trace mechanism and 1321has a much larger code and data size. 1322 1323 Current Release: 1324 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1325 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1326 Previous Release: 1327 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1328 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1329 1330 13312) iASL Compiler/Disassembler and Tools: 1332 1333iASL: Fix a possible fault when using the Connection() operator. Fixes a 1334problem if the parent Field definition for the Connection operator refers 1335to an operation region that does not exist. ACPICA BZ 1064. 1336 1337AcpiExec: Load of local test tables is now optional. The utility has the 1338capability to load some various tables to test features of ACPICA. 1339However, there are enough of them that the output of the utility became 1340confusing. With this change, only the required local tables are displayed 1341(RSDP, XSDT, etc.) along with the actual tables loaded via the command 1342line specification. This makes the default output simler and easier to 1343understand. The -el command line option restores the original behavior 1344for testing purposes. 1345 1346AcpiExec: Added support for overlapping operation regions. This change 1347expands the simulation of operation regions by supporting regions that 1348overlap within the given address space. Supports SystemMemory and 1349SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 1350 1351AcpiExec: Added region handler support for PCI_Config and EC spaces. This 1352allows AcpiExec to simulate these address spaces, similar to the current 1353support for SystemMemory and SystemIO. 1354 1355Debugger: Added new command to read/write/compare all namespace objects. 1356The command "test objects" will exercise the entire namespace by writing 1357new values to each data object, and ensuring that the write was 1358successful. The original value is then restored and verified. 1359 1360Debugger: Added the "test predefined" command. This change makes this 1361test public and puts it under the new "test" command. The test executes 1362each and every predefined name within the current namespace. 1363 1364---------------------------------------- 136518 December 2013. Summary of changes for version 20131218: 1366 1367Global note: The ACPI 5.0A specification was released this month. There 1368are no changes needed for ACPICA since this release of ACPI is an 1369errata/clarification release. The specification is available at 1370acpi.info. 1371 1372 13731) ACPICA kernel-resident subsystem: 1374 1375Added validation of the XSDT root table if it is present. Some older 1376platforms contain an XSDT that is ill-formed or otherwise invalid (such 1377as containing some or all entries that are NULL pointers). This change 1378adds a new function to validate the XSDT before actually using it. If the 1379XSDT is found to be invalid, ACPICA will now automatically fall back to 1380using the RSDT instead. Original implementation by Zhao Yakui. Ported to 1381ACPICA and enhanced by Lv Zheng and Bob Moore. 1382 1383Added a runtime option to ignore the XSDT and force the use of the RSDT. 1384This change adds a runtime option that will force ACPICA to use the RSDT 1385instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 1386requires that an XSDT be used instead of the RSDT, the XSDT has been 1387found to be corrupt or ill-formed on some machines. Lv Zheng. 1388 1389Added a runtime option to favor 32-bit FADT register addresses over the 139064-bit addresses. This change adds an option to favor 32-bit FADT 1391addresses when there is a conflict between the 32-bit and 64-bit versions 1392of the same register. The default behavior is to use the 64-bit version 1393in accordance with the ACPI specification. This can now be overridden via 1394the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 1395 1396During the change above, the internal "Convert FADT" and "Verify FADT" 1397functions have been merged to simplify the code, making it easier to 1398understand and maintain. ACPICA BZ 933. 1399 1400Improve exception reporting and handling for GPE block installation. 1401Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 1402status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 1403 1404Added helper macros to extract bus/segment numbers from the HEST table. 1405This change adds two macros to extract the encoded bus and segment 1406numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 1407Betty Dall <betty.dall@hp.com> 1408 1409Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 1410by ACPICA. It is not a public macro, so it should have no effect on 1411existing OSV code. Lv Zheng. 1412 1413Example Code and Data Size: These are the sizes for the OS-independent 1414acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1415debug version of the code includes the debug output trace mechanism and 1416has a much larger code and data size. 1417 1418 Current Release: 1419 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1420 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1421 Previous Release: 1422 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1423 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1424 1425 14262) iASL Compiler/Disassembler and Tools: 1427 1428Disassembler: Improved pathname support for emitted External() 1429statements. This change adds full pathname support for external names 1430that have been resolved internally by the inclusion of additional ACPI 1431tables (via the iASL -e option). Without this change, the disassembler 1432can emit multiple externals for the same object, or it become confused 1433when the Scope() operator is used on an external object. Overall, greatly 1434improves the ability to actually recompile the emitted ASL code when 1435objects a referenced across multiple ACPI tables. Reported by Michael 1436Tsirkin (mst@redhat.com). 1437 1438Tests/ASLTS: Updated functional control suite to execute with no errors. 1439David Box. Fixed several errors related to the testing of the interpreter 1440slack mode. Lv Zheng. 1441 1442iASL: Added support to detect names that are declared within a control 1443method, but are unused (these are temporary names that are only valid 1444during the time the method is executing). A remark is issued for these 1445cases. ACPICA BZ 1022. 1446 1447iASL: Added full support for the DBG2 table. Adds full disassembler, 1448table compiler, and template generator support for the DBG2 table (Debug 1449Port 2 table). 1450 1451iASL: Added full support for the PCCT table, update the table definition. 1452Updates the PCCT table definition in the actbl3.h header and adds table 1453compiler and template generator support. 1454 1455iASL: Added an option to emit only error messages (no warnings/remarks). 1456The -ve option will enable only error messages, warnings and remarks are 1457suppressed. This can simplify debugging when only the errors are 1458important, such as when an ACPI table is disassembled and there are many 1459warnings and remarks -- but only the actual errors are of real interest. 1460 1461Example ACPICA code (source/tools/examples): Updated the example code so 1462that it builds to an actual working program, not just example code. Added 1463ACPI tables and execution of an example control method in the DSDT. Added 1464makefile support for Unix generation. 1465 1466---------------------------------------- 146715 November 2013. Summary of changes for version 20131115: 1468 1469This release is available at https://acpica.org/downloads 1470 1471 14721) ACPICA kernel-resident subsystem: 1473 1474Resource Manager: Fixed loop termination for the "get AML length" 1475function. The loop previously had an error termination on a NULL resource 1476pointer, which can never happen since the loop simply increments a valid 1477resource pointer. This fix changes the loop to terminate with an error on 1478an invalid end-of-buffer condition. The problem can be seen as an 1479infinite loop by callers to AcpiSetCurrentResources with an invalid or 1480corrupted resource descriptor, or a resource descriptor that is missing 1481an END_TAG descriptor. Reported by Dan Carpenter 1482<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 1483 1484Table unload and ACPICA termination: Delete all attached data objects 1485during namespace node deletion. This fix updates namespace node deletion 1486to delete the entire list of attached objects (attached via 1487AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 14881024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 1489 1490ACPICA termination: Added support to delete all objects attached to the 1491root namespace node. This fix deletes any and all objects that have been 1492attached to the root node via AcpiAttachData. Previously, none of these 1493objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 1494 1495Debug output: Do not emit the function nesting level for the in-kernel 1496build. The nesting level is really only useful during a single-thread 1497execution. Therefore, only enable this output for the AcpiExec utility. 1498Also, only emit the thread ID when executing under AcpiExec (Context 1499switches are still always detected and a message is emitted). ACPICA BZ 1500972. 1501 1502Example Code and Data Size: These are the sizes for the OS-independent 1503acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1504debug version of the code includes the debug output trace mechanism and 1505has a much larger code and data size. 1506 1507 Current Release: 1508 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1509 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1510 Previous Release: 1511 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1512 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1513 1514 15152) iASL Compiler/Disassembler and Tools: 1516 1517AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 1518correct portable POSIX header for terminal control functions. 1519 1520Disassembler: Fixed control method invocation issues related to the use 1521of the CondRefOf() operator. The problem is seen in the disassembly where 1522control method invocations may not be disassembled properly if the 1523control method name has been used previously as an argument to CondRefOf. 1524The solution is to not attempt to emit an external declaration for the 1525CondRefOf target (it is not necessary in the first place). This prevents 1526disassembler object type confusion. ACPICA BZ 988. 1527 1528Unix Makefiles: Added an option to disable compiler optimizations and the 1529_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 1530with optimizations (reportedly, gcc 4.4 for example). This change adds a 1531command line option for make (NOOPT) that disables all compiler 1532optimizations and the _FORTIFY_SOURCE compiler flag. The default 1533optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 15341034. Lv Zheng, Bob Moore. 1535 1536Tests/ASLTS: Added options to specify individual test cases and modes. 1537This allows testers running aslts.sh to optionally specify individual 1538test modes and test cases. Also added an option to disable the forced 1539generation of the ACPICA tools from source if desired. Lv Zheng. 1540 1541---------------------------------------- 154227 September 2013. Summary of changes for version 20130927: 1543 1544This release is available at https://acpica.org/downloads 1545 1546 15471) ACPICA kernel-resident subsystem: 1548 1549Fixed a problem with store operations to reference objects. This change 1550fixes a problem where a Store operation to an ArgX object that contained 1551a 1552reference to a field object did not complete the automatic dereference 1553and 1554then write to the actual field object. Instead, the object type of the 1555field object was inadvertently changed to match the type of the source 1556operand. The new behavior will actually write to the field object (buffer 1557field or field unit), thus matching the correct ACPI-defined behavior. 1558 1559Implemented support to allow the host to redefine individual OSL 1560prototypes. This change enables the host to redefine OSL prototypes found 1561in the acpiosxf.h file. This allows the host to implement OSL interfaces 1562with a macro or inlined function. Further, it allows the host to add any 1563additional required modifiers such as __iomem, __init, __exit, etc., as 1564necessary on a per-interface basis. Enables maximum flexibility for the 1565OSL interfaces. Lv Zheng. 1566 1567Hardcoded the access width for the FADT-defined reset register. The ACPI 1568specification requires the reset register width to be 8 bits. ACPICA now 1569hardcodes the width to 8 and ignores the FADT width value. This provides 1570compatibility with other ACPI implementations that have allowed BIOS code 1571with bad register width values to go unnoticed. Matthew Garett, Bob 1572Moore, 1573Lv Zheng. 1574 1575Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 1576used 1577in the OSL header (acpiosxf). The change modifies the position of this 1578macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 1579build issues if the OSL defines the implementation of the interface to be 1580an inline stub function. Lv Zheng. 1581 1582Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 1583initialization interfaces. This change adds a new macro for the main init 1584and terminate external interfaces in order to support hosts that require 1585additional or different processing for these functions. Changed from 1586ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 1587Zheng, Bob Moore. 1588 1589Cleaned up the memory allocation macros for configurability. In the 1590common 1591case, the ACPI_ALLOCATE and related macros now resolve directly to their 1592respective AcpiOs* OSL interfaces. Two options: 15931) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 1594default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 15952) For AcpiExec (and for debugging), the macros can optionally be 1596resolved 1597to the local ACPICA interfaces that track each allocation (local tracking 1598is used to immediately detect memory leaks). 1599Lv Zheng. 1600 1601Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 1602to predefine this macro to either TRUE or FALSE during the system build. 1603 1604Replaced __FUNCTION_ with __func__ in the gcc-specific header. 1605 1606Example Code and Data Size: These are the sizes for the OS-independent 1607acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1608debug version of the code includes the debug output trace mechanism and 1609has a much larger code and data size. 1610 1611 Current Release: 1612 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1613 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1614 Previous Release: 1615 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1616 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1617 1618 16192) iASL Compiler/Disassembler and Tools: 1620 1621iASL: Implemented wildcard support for the -e option. This simplifies use 1622when there are many SSDTs that must be included to resolve external 1623method 1624declarations. ACPICA BZ 1041. Example: 1625 iasl -e ssdt*.dat -d dsdt.dat 1626 1627AcpiExec: Add history/line-editing for Unix/Linux systems. This change 1628adds a portable module that implements full history and limited line 1629editing for Unix and Linux systems. It does not use readline() due to 1630portability issues. Instead it uses the POSIX termio interface to put the 1631terminal in raw input mode so that the various special keys can be 1632trapped 1633(such as up/down-arrow for history support and left/right-arrow for line 1634editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 1635 1636AcpiXtract: Add support to handle (ignore) "empty" lines containing only 1637one or more spaces. This provides compatible with early or different 1638versions of the AcpiDump utility. ACPICA BZ 1044. 1639 1640AcpiDump: Do not ignore tables that contain only an ACPI table header. 1641Apparently, some BIOSs create SSDTs that contain an ACPI table header but 1642no other data. This change adds support to dump these tables. Any tables 1643shorter than the length of an ACPI table header remain in error (an error 1644message is emitted). Reported by Yi Li. 1645 1646Debugger: Echo actual command along with the "unknown command" message. 1647 1648---------------------------------------- 164923 August 2013. Summary of changes for version 20130823: 1650 16511) ACPICA kernel-resident subsystem: 1652 1653Implemented support for host-installed System Control Interrupt (SCI) 1654handlers. Certain ACPI functionality requires the host to handle raw 1655SCIs. For example, the "SCI Doorbell" that is defined for memory power 1656state support requires the host device driver to handle SCIs to examine 1657if the doorbell has been activated. Multiple SCI handlers can be 1658installed to allow for future expansion. New external interfaces are 1659AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 1660details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 1661 1662Operation region support: Never locally free the handler "context" 1663pointer. This change removes some dangerous code that attempts to free 1664the handler context pointer in some (rare) circumstances. The owner of 1665the handler owns this pointer and the ACPICA code should never touch it. 1666Although not seen to be an issue in any kernel, it did show up as a 1667problem (fault) under AcpiExec. Also, set the internal storage field for 1668the context pointer to zero when the region is deactivated, simply for 1669sanity. David Box. ACPICA BZ 1039. 1670 1671AcpiRead: On error, do not modify the return value target location. If an 1672error happens in the middle of a split 32/32 64-bit I/O operation, do not 1673modify the target of the return value pointer. Makes the code consistent 1674with the rest of ACPICA. Bjorn Helgaas. 1675 1676Example Code and Data Size: These are the sizes for the OS-independent 1677acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1678debug version of the code includes the debug output trace mechanism and 1679has a much larger code and data size. 1680 1681 Current Release: 1682 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1683 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1684 Previous Release: 1685 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1686 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 1687 1688 16892) iASL Compiler/Disassembler and Tools: 1690 1691AcpiDump: Implemented several new features and fixed some problems: 16921) Added support to dump the RSDP, RSDT, and XSDT tables. 16932) Added support for multiple table instances (SSDT, UEFI). 16943) Added option to dump "customized" (overridden) tables (-c). 16954) Fixed a problem where some table filenames were improperly 1696constructed. 16975) Improved some error messages, removed some unnecessary messages. 1698 1699iASL: Implemented additional support for disassembly of ACPI tables that 1700contain invocations of external control methods. The -fe<file> option 1701allows the import of a file that specifies the external methods along 1702with the required number of arguments for each -- allowing for the 1703correct disassembly of the table. This is a workaround for a limitation 1704of AML code where the disassembler often cannot determine the number of 1705arguments required for an external control method and generates incorrect 1706ASL code. See the iASL reference for details. ACPICA BZ 1030. 1707 1708Debugger: Implemented a new command (paths) that displays the full 1709pathnames (namepaths) and object types of all objects in the namespace. 1710This is an alternative to the namespace command. 1711 1712Debugger: Implemented a new command (sci) that invokes the SCI dispatch 1713mechanism and any installed handlers. 1714 1715iASL: Fixed a possible segfault for "too many parent prefixes" condition. 1716This can occur if there are too many parent prefixes in a namepath (for 1717example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 1718 1719Application OSLs: Set the return value for the PCI read functions. These 1720functions simply return AE_OK, but should set the return value to zero 1721also. This change implements this. ACPICA BZ 1038. 1722 1723Debugger: Prevent possible command line buffer overflow. Increase the 1724size of a couple of the debugger line buffers, and ensure that overflow 1725cannot happen. ACPICA BZ 1037. 1726 1727iASL: Changed to abort immediately on serious errors during the parsing 1728phase. Due to the nature of ASL, there is no point in attempting to 1729compile these types of errors, and they typically end up causing a 1730cascade of hundreds of errors which obscure the original problem. 1731 1732---------------------------------------- 173325 July 2013. Summary of changes for version 20130725: 1734 17351) ACPICA kernel-resident subsystem: 1736 1737Fixed a problem with the DerefOf operator where references to FieldUnits 1738and BufferFields incorrectly returned the parent object, not the actual 1739value of the object. After this change, a dereference of a FieldUnit 1740reference results in a read operation on the field to get the value, and 1741likewise, the appropriate BufferField value is extracted from the target 1742buffer. 1743 1744Fixed a problem where the _WAK method could cause a fault under these 1745circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 1746method returned no value. The problem is rarely seen because most kernels 1747run ACPICA in slack mode. 1748 1749For the DerefOf operator, a fatal error now results if an attempt is made 1750to dereference a reference (created by the Index operator) to a NULL 1751package element. Provides compatibility with other ACPI implementations, 1752and this behavior will be added to a future version of the ACPI 1753specification. 1754 1755The ACPI Power Management Timer (defined in the FADT) is now optional. 1756This provides compatibility with other ACPI implementations and will 1757appear in the next version of the ACPI specification. If there is no PM 1758Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 1759zero in the FADT indicates no PM timer. 1760 1761Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 1762allows the host to globally enable/disable all vendor strings, all 1763feature strings, or both. Intended to be primarily used for debugging 1764purposes only. Lv Zheng. 1765 1766Expose the collected _OSI data to the host via a global variable. This 1767data tracks the highest level vendor ID that has been invoked by the BIOS 1768so that the host (and potentially ACPICA itself) can change behaviors 1769based upon the age of the BIOS. 1770 1771Example Code and Data Size: These are the sizes for the OS-independent 1772acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1773debug version of the code includes the debug output trace mechanism and 1774has a much larger code and data size. 1775 1776 Current Release: 1777 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1778 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1779 Previous Release: 1780 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1781 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1782 1783 17842) iASL Compiler/Disassembler and Tools: 1785 1786iASL: Created the following enhancements for the -so option (create 1787offset table): 17881)Add offsets for the last nameseg in each namepath for every supported 1789object type 17902)Add support for Processor, Device, Thermal Zone, and Scope objects 17913)Add the actual AML opcode for the parent object of every supported 1792object type 17934)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 1794 1795Disassembler: Emit all unresolved external symbols in a single block. 1796These are external references to control methods that could not be 1797resolved, and thus, the disassembler had to make a guess at the number of 1798arguments to parse. 1799 1800iASL: The argument to the -T option (create table template) is now 1801optional. If not specified, the default table is a DSDT, typically the 1802most common case. 1803 1804---------------------------------------- 180526 June 2013. Summary of changes for version 20130626: 1806 18071) ACPICA kernel-resident subsystem: 1808 1809Fixed an issue with runtime repair of the _CST object. Null or invalid 1810elements were not always removed properly. Lv Zheng. 1811 1812Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 1813FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 1814the maximum number of GPEs is 1016. Use of multiple GPE block devices 1815makes the system-wide number of GPEs essentially unlimited. 1816 1817Example Code and Data Size: These are the sizes for the OS-independent 1818acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1819debug version of the code includes the debug output trace mechanism and 1820has a much larger code and data size. 1821 1822 Current Release: 1823 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1824 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1825 Previous Release: 1826 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1827 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1828 1829 18302) iASL Compiler/Disassembler and Tools: 1831 1832Portable AcpiDump: Implemented full support for the Linux and FreeBSD 1833hosts. Now supports Linux, FreeBSD, and Windows. 1834 1835Disassembler: Added some missing types for the HEST and EINJ tables: "Set 1836Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 1837 1838iASL/Preprocessor: Implemented full support for nested 1839#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 1840 1841Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 1842max. The original purpose of this constraint was to limit the amount of 1843debug output. However, the string function in question (UtPrintString) is 1844now used for the disassembler also, where 256 bytes is insufficient. 1845Reported by RehabMan@GitHub. 1846 1847iASL/DataTables: Fixed some problems and issues with compilation of DMAR 1848tables. ACPICA BZ 999. Lv Zheng. 1849 1850iASL: Fixed a couple of error exit issues that could result in a "Could 1851not delete <file>" message during ASL compilation. 1852 1853AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 1854the actual signatures for these tables are "FACP" and "APIC", 1855respectively. 1856 1857AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 1858tables are allowed to have multiple instances. 1859 1860---------------------------------------- 186117 May 2013. Summary of changes for version 20130517: 1862 18631) ACPICA kernel-resident subsystem: 1864 1865Fixed a regression introduced in version 20130328 for _INI methods. This 1866change fixes a problem introduced in 20130328 where _INI methods are no 1867longer executed properly because of a memory block that was not 1868initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 1869<tomasz.nowicki@linaro.org>. 1870 1871Fixed a possible problem with the new extended sleep registers in the 1872ACPI 18735.0 FADT. Do not use these registers (even if populated) unless the HW- 1874reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 18751020. Lv Zheng. 1876 1877Implemented return value repair code for _CST predefined objects: Sort 1878the 1879list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 1880 1881Implemented a debug-only option to disable loading of SSDTs from the 1882RSDT/XSDT during ACPICA initialization. This can be useful for debugging 1883ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 1884acglobal.h - ACPICA BZ 1005. Lv Zheng. 1885 1886Fixed some issues in the ACPICA initialization and termination code: 1887Tomasz Nowicki <tomasz.nowicki@linaro.org> 18881) Clear events initialized flag upon event component termination. ACPICA 1889BZ 1013. 18902) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 18913) Delete global lock pending lock during termination. ACPICA BZ 1012. 18924) Clear debug buffer global on termination to prevent possible multiple 1893delete. ACPICA BZ 1010. 1894 1895Standardized all switch() blocks across the entire source base. After 1896many 1897years, different formatting for switch() had crept in. This change makes 1898the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 1899 1900Split some files to enhance ACPICA modularity and configurability: 19011) Split buffer dump routines into utilities/utbuffer.c 19022) Split internal error message routines into utilities/uterror.c 19033) Split table print utilities into tables/tbprint.c 19044) Split iASL command-line option processing into asloptions.c 1905 1906Makefile enhancements: 19071) Support for all new files above. 19082) Abort make on errors from any subcomponent. Chao Guan. 19093) Add build support for Apple Mac OS X. Liang Qi. 1910 1911Example Code and Data Size: These are the sizes for the OS-independent 1912acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1913debug version of the code includes the debug output trace mechanism and 1914has a much larger code and data size. 1915 1916 Current Release: 1917 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1918 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1919 Previous Release: 1920 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1921 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1922 1923 19242) iASL Compiler/Disassembler and Tools: 1925 1926New utility: Implemented an easily portable version of the acpidump 1927utility to extract ACPI tables from the system (or a file) in an ASCII 1928hex 1929dump format. The top-level code implements the various command line 1930options, file I/O, and table dump routines. To port to a new host, only 1931three functions need to be implemented to get tables -- since this 1932functionality is OS-dependent. See the tools/acpidump/apmain.c module and 1933the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 19341) The Windows version obtains the ACPI tables from the Registry. 19352) The Linux version is under development. 19363) Other hosts - If an OS-dependent module is submitted, it will be 1937distributed with ACPICA. 1938 1939iASL: Fixed a regression for -D preprocessor option (define symbol). A 1940restructuring/change to the initialization sequence caused this option to 1941no longer work properly. 1942 1943iASL: Implemented a mechanism to disable specific warnings and remarks. 1944Adds a new command line option, "-vw <messageid> as well as "#pragma 1945disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 1946 1947iASL: Fix for too-strict package object validation. The package object 1948validation for return values from the predefined names is a bit too 1949strict, it does not allow names references within the package (which will 1950be resolved at runtime.) These types of references cannot be validated at 1951compile time. This change ignores named references within package objects 1952for names that return or define static packages. 1953 1954Debugger: Fixed the 80-character command line limitation for the History 1955command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 1956 1957iASL: Added control method and package support for the -so option 1958(generates AML offset table for BIOS support.) 1959 1960iASL: issue a remark if a non-serialized method creates named objects. If 1961a thread blocks within the method for any reason, and another thread 1962enters the method, the method will fail because an attempt will be made 1963to 1964create the same (named) object twice. In this case, issue a remark that 1965the method should be marked serialized. NOTE: may become a warning later. 1966ACPICA BZ 909. 1967 1968---------------------------------------- 196918 April 2013. Summary of changes for version 20130418: 1970 19711) ACPICA kernel-resident subsystem: 1972 1973Fixed a possible buffer overrun during some rare but specific field unit 1974read operations. This overrun can only happen if the DSDT version is 1 -- 1975meaning that all AML integers are 32 bits -- and the field length is 1976between 33 and 55 bits long. During the read, an internal buffer object 1977is 1978created for the field unit because the field is larger than an integer 1979(32 1980bits). However, in this case, the buffer will be incorrectly written 1981beyond the end because the buffer length is less than the internal 1982minimum 1983of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 1984long, but a full 8 bytes will be written. 1985 1986Updated the Embedded Controller "orphan" _REG method support. This refers 1987to _REG methods under the EC device that have no corresponding operation 1988region. This is allowed by the ACPI specification. This update removes a 1989dependency on the existence an ECDT table. It will execute an orphan _REG 1990method as long as the operation region handler for the EC is installed at 1991the EC device node and not the namespace root. Rui Zhang (original 1992update), Bob Moore (update/integrate). 1993 1994Implemented run-time argument typechecking for all predefined ACPI names 1995(_STA, _BIF, etc.) This change performs object typechecking on all 1996incoming arguments for all predefined names executed via 1997AcpiEvaluateObject. This ensures that ACPI-related device drivers are 1998passing correct object types as well as the correct number of arguments 1999(therefore identifying any issues immediately). Also, the ASL/namespace 2000definition of the predefined name is checked against the ACPI 2001specification for the proper argument count. Adds one new file, 2002nsarguments.c 2003 2004Changed an exception code for the ASL UnLoad() operator. Changed the 2005exception code for the case where the input DdbHandle is invalid, from 2006AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 2007 2008Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 2009global makefile. The use of this flag causes compiler errors on earlier 2010versions of GCC, so it has been removed for compatibility. 2011 2012Miscellaneous cleanup: 20131) Removed some unused/obsolete macros 20142) Fixed a possible memory leak in the _OSI support 20153) Removed an unused variable in the predefined name support 20164) Windows OSL: remove obsolete reference to a memory list field 2017 2018Example Code and Data Size: These are the sizes for the OS-independent 2019acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2020debug version of the code includes the debug output trace mechanism and 2021has a much larger code and data size. 2022 2023 Current Release: 2024 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2025 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2026 Previous Release: 2027 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2028 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2029 2030 20312) iASL Compiler/Disassembler and Tools: 2032 2033AcpiExec: Added installation of a handler for the SystemCMOS address 2034space. This prevents control method abort if a method accesses this 2035space. 2036 2037AcpiExec: Added support for multiple EC devices, and now install EC 2038operation region handler(s) at the actual EC device instead of the 2039namespace root. This reflects the typical behavior of host operating 2040systems. 2041 2042AcpiExec: Updated to ensure that all operation region handlers are 2043installed before the _REG methods are executed. This prevents a _REG 2044method from aborting if it accesses an address space has no handler. 2045AcpiExec installs a handler for every possible address space. 2046 2047Debugger: Enhanced the "handlers" command to display non-root handlers. 2048This change enhances the handlers command to display handlers associated 2049with individual devices throughout the namespace, in addition to the 2050currently supported display of handlers associated with the root 2051namespace 2052node. 2053 2054ASL Test Suite: Several test suite errors have been identified and 2055resolved, reducing the total error count during execution. Chao Guan. 2056 2057---------------------------------------- 205828 March 2013. Summary of changes for version 20130328: 2059 20601) ACPICA kernel-resident subsystem: 2061 2062Fixed several possible race conditions with the internal object reference 2063counting mechanism. Some of the external ACPICA interfaces update object 2064reference counts without holding the interpreter or namespace lock. This 2065change adds a spinlock to protect reference count updates on the internal 2066ACPICA objects. Reported by and with assistance from Andriy Gapon 2067(avg@FreeBSD.org). 2068 2069FADT support: Removed an extraneous warning for very large GPE register 2070sets. This change removes a size mismatch warning if the legacy length 2071field for a GPE register set is larger than the 64-bit GAS structure can 2072accommodate. GPE register sets can be larger than the 255-bit width 2073limitation of the GAS structure. Linn Crosetto (linn@hp.com). 2074 2075_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 2076return from this interface. Handles a possible timeout case if 2077ACPI_WAIT_FOREVER is modified by the host to be a value less than 2078"forever". Jung-uk Kim. 2079 2080Predefined name support: Add allowed/required argument type information 2081to 2082the master predefined info table. This change adds the infrastructure to 2083enable typechecking on incoming arguments for all predefined 2084methods/objects. It does not actually contain the code that will fully 2085utilize this information, this is still under development. Also condenses 2086some duplicate code for the predefined names into a new module, 2087utilities/utpredef.c 2088 2089Example Code and Data Size: These are the sizes for the OS-independent 2090acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2091debug version of the code includes the debug output trace mechanism and 2092has a much larger code and data size. 2093 2094 Previous Release: 2095 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2096 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2097 Current Release: 2098 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2099 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2100 2101 21022) iASL Compiler/Disassembler and Tools: 2103 2104iASL: Implemented a new option to simplify the development of ACPI- 2105related 2106BIOS code. Adds support for a new "offset table" output file. The -so 2107option will create a C table containing the AML table offsets of various 2108named objects in the namespace so that BIOS code can modify them easily 2109at 2110boot time. This can simplify BIOS runtime code by eliminating expensive 2111searches for "magic values", enhancing boot times and adding greater 2112reliability. With assistance from Lee Hamel. 2113 2114iASL: Allow additional predefined names to return zero-length packages. 2115Now, all predefined names that are defined by the ACPI specification to 2116return a "variable-length package of packages" are allowed to return a 2117zero length top-level package. This allows the BIOS to tell the host that 2118the requested feature is not supported, and supports existing BIOS/ASL 2119code and practices. 2120 2121iASL: Changed the "result not used" warning to an error. This is the case 2122where an ASL operator is effectively a NOOP because the result of the 2123operation is not stored anywhere. For example: 2124 Add (4, Local0) 2125There is no target (missing 3rd argument), nor is the function return 2126value used. This is potentially a very serious problem -- since the code 2127was probably intended to do something, but for whatever reason, the value 2128was not stored. Therefore, this issue has been upgraded from a warning to 2129an error. 2130 2131AcpiHelp: Added allowable/required argument types to the predefined names 2132info display. This feature utilizes the recent update to the predefined 2133names table (above). 2134 2135---------------------------------------- 213614 February 2013. Summary of changes for version 20130214: 2137 21381) ACPICA Kernel-resident Subsystem: 2139 2140Fixed a possible regression on some hosts: Reinstated the safe return 2141macros (return_ACPI_STATUS, etc.) that ensure that the argument is 2142evaluated only once. Although these macros are not needed for the ACPICA 2143code itself, they are often used by ACPI-related host device drivers 2144where 2145the safe feature may be necessary. 2146 2147Fixed several issues related to the ACPI 5.0 reduced hardware support 2148(SOC): Now ensure that if the platform declares itself as hardware- 2149reduced 2150via the FADT, the following functions become NOOPs (and always return 2151AE_OK) because ACPI is always enabled by definition on these machines: 2152 AcpiEnable 2153 AcpiDisable 2154 AcpiHwGetMode 2155 AcpiHwSetMode 2156 2157Dynamic Object Repair: Implemented additional runtime repairs for 2158predefined name return values. Both of these repairs can simplify code in 2159the related device drivers that invoke these methods: 21601) For the _STR and _MLS names, automatically repair/convert an ASCII 2161string to a Unicode buffer. 21622) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 2163a 2164lone end tag descriptor in the following cases: A Return(0) was executed, 2165a null buffer was returned, or no object at all was returned (non-slack 2166mode only). Adds a new file, nsconvert.c 2167ACPICA BZ 998. Bob Moore, Lv Zheng. 2168 2169Resource Manager: Added additional code to prevent possible infinite 2170loops 2171while traversing corrupted or ill-formed resource template buffers. Check 2172for zero-length resource descriptors in all code that loops through 2173resource templates (the length field is used to index through the 2174template). This change also hardens the external AcpiWalkResources and 2175AcpiWalkResourceBuffer interfaces. 2176 2177Local Cache Manager: Enhanced the main data structure to eliminate an 2178unnecessary mechanism to access the next object in the list. Actually 2179provides a small performance enhancement for hosts that use the local 2180ACPICA cache manager. Jung-uk Kim. 2181 2182Example Code and Data Size: These are the sizes for the OS-independent 2183acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2184debug version of the code includes the debug output trace mechanism and 2185has a much larger code and data size. 2186 2187 Previous Release: 2188 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2189 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2190 Current Release: 2191 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2192 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2193 2194 21952) iASL Compiler/Disassembler and Tools: 2196 2197iASL/Disassembler: Fixed several issues with the definition of the ACPI 21985.0 RASF table (RAS Feature Table). This change incorporates late changes 2199that were made to the ACPI 5.0 specification. 2200 2201iASL/Disassembler: Added full support for the following new ACPI tables: 2202 1) The MTMR table (MID Timer Table) 2203 2) The VRTC table (Virtual Real Time Clock Table). 2204Includes header file, disassembler, table compiler, and template support 2205for both tables. 2206 2207iASL: Implemented compile-time validation of package objects returned by 2208predefined names. This new feature validates static package objects 2209returned by the various predefined names defined to return packages. Both 2210object types and package lengths are validated, for both parent packages 2211and sub-packages, if any. The code is similar in structure and behavior 2212to 2213the runtime repair mechanism within the AML interpreter and uses the 2214existing predefined name information table. Adds a new file, aslprepkg.c. 2215ACPICA BZ 938. 2216 2217iASL: Implemented auto-detection of binary ACPI tables for disassembly. 2218This feature detects a binary file with a valid ACPI table header and 2219invokes the disassembler automatically. Eliminates the need to 2220specifically invoke the disassembler with the -d option. ACPICA BZ 862. 2221 2222iASL/Disassembler: Added several warnings for the case where there are 2223unresolved control methods during the disassembly. This can potentially 2224cause errors when the output file is compiled, because the disassembler 2225assumes zero method arguments in these cases (it cannot determine the 2226actual number of arguments without resolution/definition of the method). 2227 2228Debugger: Added support to display all resources with a single command. 2229Invocation of the resources command with no arguments will now display 2230all 2231resources within the current namespace. 2232 2233AcpiHelp: Added descriptive text for each ACPICA exception code displayed 2234via the -e option. 2235 2236---------------------------------------- 223717 January 2013. Summary of changes for version 20130117: 2238 22391) ACPICA Kernel-resident Subsystem: 2240 2241Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 2242return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 2243objects to return a package containing one integer, most BIOS code 2244returns 2245two integers and the previous code reflects that. However, we also need 2246to 2247support BIOS code that actually implements to the ACPI spec, and this 2248change reflects this. 2249 2250Fixed two issues with the ACPI_DEBUG_PRINT macros: 22511) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 2252C compilers that require this support. 22532) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 2254ACPI_DEBUG is already used by many of the various hosts. 2255 2256Updated all ACPICA copyrights and signons to 2013. Added the 2013 2257copyright to all module headers and signons, including the standard Linux 2258header. This affects virtually every file in the ACPICA core subsystem, 2259iASL compiler, all ACPICA utilities, and the test suites. 2260 2261Example Code and Data Size: These are the sizes for the OS-independent 2262acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2263debug version of the code includes the debug output trace mechanism and 2264has a much larger code and data size. 2265 2266 Previous Release: 2267 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2268 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2269 Current Release: 2270 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2271 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2272 2273 22742) iASL Compiler/Disassembler and Tools: 2275 2276Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 2277prevent a possible fault on some hosts. Some C libraries modify the arg 2278pointer parameter to vfprintf making it difficult to call it twice in the 2279AcpiOsVprintf function. Use a local buffer to workaround this issue. This 2280does not affect the Windows OSL since the Win C library does not modify 2281the arg pointer. Chao Guan, Bob Moore. 2282 2283iASL: Fixed a possible infinite loop when the maximum error count is 2284reached. If an output file other than the .AML file is specified (such as 2285a listing file), and the maximum number of errors is reached, do not 2286attempt to flush data to the output file(s) as the compiler is aborting. 2287This can cause an infinite loop as the max error count code essentially 2288keeps calling itself. 2289 2290iASL/Disassembler: Added an option (-in) to ignore NOOP 2291opcodes/operators. 2292Implemented for both the compiler and the disassembler. Often, the NOOP 2293opcode is used as padding for packages that are changed dynamically by 2294the 2295BIOS. When disassembled and recompiled, these NOOPs will cause syntax 2296errors. This option causes the disassembler to ignore all NOOP opcodes 2297(0xA3), and it also causes the compiler to ignore all ASL source code 2298NOOP 2299statements as well. 2300 2301Debugger: Enhanced the Sleep command to execute all sleep states. This 2302change allows Sleep to be invoked with no arguments and causes the 2303debugger to execute all of the sleep states, 0-5, automatically. 2304 2305---------------------------------------- 230620 December 2012. Summary of changes for version 20121220: 2307 23081) ACPICA Kernel-resident Subsystem: 2309 2310Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 2311alternate entry point for AcpiWalkResources and improves the usability of 2312the resource manager by accepting as input a buffer containing the output 2313of either a _CRS, _PRS, or _AEI method. The key functionality is that the 2314input buffer is not deleted by this interface so that it can be used by 2315the host later. See the ACPICA reference for details. 2316 2317Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 2318(DSDT version < 2). The constant will be truncated and this warning 2319reflects that behavior. 2320 2321Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 2322ExtendedInterrupt, and GpioInt descriptors. This change adds support to 2323both get and set the new wake bit in these descriptors, separately from 2324the existing share bit. Reported by Aaron Lu. 2325 2326Interpreter: Fix Store() when an implicit conversion is not possible. For 2327example, in the cases such as a store of a string to an existing package 2328object, implement the store as a CopyObject(). This is a small departure 2329from the ACPI specification which states that the control method should 2330be 2331aborted in this case. However, the ASLTS suite depends on this behavior. 2332 2333Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 2334macros: check if debug output is currently enabled as soon as possible to 2335minimize performance impact if debug is in fact not enabled. 2336 2337Source code restructuring: Cleanup to improve modularity. The following 2338new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 2339psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 2340Associated makefiles and project files have been updated. 2341 2342Changed an exception code for LoadTable operator. For the case where one 2343of the input strings is too long, change the returned exception code from 2344AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 2345 2346Fixed a possible memory leak in dispatcher error path. On error, delete 2347the mutex object created during method mutex creation. Reported by 2348tim.gardner@canonical.com. 2349 2350Example Code and Data Size: These are the sizes for the OS-independent 2351acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2352debug version of the code includes the debug output trace mechanism and 2353has a much larger code and data size. 2354 2355 Previous Release: 2356 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2357 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2358 Current Release: 2359 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2360 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2361 2362 23632) iASL Compiler/Disassembler and Tools: 2364 2365iASL: Disallow a method call as argument to the ObjectType ASL operator. 2366This change tracks an errata to the ACPI 5.0 document. The AML grammar 2367will not allow the interpreter to differentiate between a method and a 2368method invocation when these are used as an argument to the ObjectType 2369operator. The ACPI specification change is to disallow a method 2370invocation 2371(UserTerm) for the ObjectType operator. 2372 2373Finish support for the TPM2 and CSRT tables in the headers, table 2374compiler, and disassembler. 2375 2376Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 2377always expires immediately if the semaphore is not available. The 2378original 2379code was using a relative-time timeout, but sem_timedwait requires the 2380use 2381of an absolute time. 2382 2383iASL: Added a remark if the Timer() operator is used within a 32-bit 2384table. This operator returns a 64-bit time value that will be truncated 2385within a 32-bit table. 2386 2387iASL Source code restructuring: Cleanup to improve modularity. The 2388following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 2389aslmethod.c, and aslfileio.c. Associated makefiles and project files have 2390been updated. 2391 2392 2393---------------------------------------- 239414 November 2012. Summary of changes for version 20121114: 2395 23961) ACPICA Kernel-resident Subsystem: 2397 2398Implemented a performance enhancement for ACPI/AML Package objects. This 2399change greatly increases the performance of Package objects within the 2400interpreter. It changes the processing of reference counts for packages 2401by 2402optimizing for the most common case where the package sub-objects are 2403either Integers, Strings, or Buffers. Increases the overall performance 2404of 2405the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 24062X.) 2407Chao Guan. ACPICA BZ 943. 2408 2409Implemented and deployed common macros to extract flag bits from resource 2410descriptors. Improves readability and maintainability of the code. Fixes 2411a 2412problem with the UART serial bus descriptor for the number of data bits 2413flags (was incorrectly 2 bits, should be 3). 2414 2415Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 2416of the macros and changed the SETx macros to the style of (destination, 2417source). Also added ACPI_CASTx companion macros. Lv Zheng. 2418 2419Example Code and Data Size: These are the sizes for the OS-independent 2420acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2421debug version of the code includes the debug output trace mechanism and 2422has a much larger code and data size. 2423 2424 Previous Release: 2425 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2426 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2427 Current Release: 2428 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2429 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2430 2431 24322) iASL Compiler/Disassembler and Tools: 2433 2434Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 2435adds the ShareAndWake and ExclusiveAndWake flags which were added to the 2436Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 2437 2438Disassembler: Fixed a problem with external declaration generation. Fixes 2439a problem where an incorrect pathname could be generated for an external 2440declaration if the original reference to the object includes leading 2441carats (^). ACPICA BZ 984. 2442 2443Debugger: Completed a major update for the Disassemble<method> command. 2444This command was out-of-date and did not properly disassemble control 2445methods that had any reasonable complexity. This fix brings the command 2446up 2447to the same level as the rest of the disassembler. Adds one new file, 2448dmdeferred.c, which is existing code that is now common with the main 2449disassembler and the debugger disassemble command. ACPICA MZ 978. 2450 2451iASL: Moved the parser entry prototype to avoid a duplicate declaration. 2452Newer versions of Bison emit this prototype, so moved the prototype out 2453of 2454the iASL header to where it is actually used in order to avoid a 2455duplicate 2456declaration. 2457 2458iASL/Tools: Standardized use of the stream I/O functions: 2459 1) Ensure check for I/O error after every fopen/fread/fwrite 2460 2) Ensure proper order of size/count arguments for fread/fwrite 2461 3) Use test of (Actual != Requested) after all fwrite, and most fread 2462 4) Standardize I/O error messages 2463Improves reliability and maintainability of the code. Bob Moore, Lv 2464Zheng. 2465ACPICA BZ 981. 2466 2467Disassembler: Prevent duplicate External() statements. During generation 2468of external statements, detect similar pathnames that are actually 2469duplicates such as these: 2470 External (\ABCD) 2471 External (ABCD) 2472Remove all leading '\' characters from pathnames during the external 2473statement generation so that duplicates will be detected and tossed. 2474ACPICA BZ 985. 2475 2476Tools: Replace low-level I/O with stream I/O functions. Replace 2477open/read/write/close with the stream I/O equivalents 2478fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 2479Moore. 2480 2481AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 2482name header so that AcpiXtract recognizes the output file/table. 2483 2484iASL: Remove obsolete -2 option flag. Originally intended to force the 2485compiler/disassembler into an ACPI 2.0 mode, this was never implemented 2486and the entire concept is now obsolete. 2487 2488---------------------------------------- 248918 October 2012. Summary of changes for version 20121018: 2490 2491 24921) ACPICA Kernel-resident Subsystem: 2493 2494Updated support for the ACPI 5.0 MPST table. Fixes some problems 2495introduced by late changes to the table as it was added to the ACPI 5.0 2496specification. Includes header, disassembler, and data table compiler 2497support as well as a new version of the MPST template. 2498 2499AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 25005.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 2501methods: _HID, _CID, and _UID. 2502 2503Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 2504ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 2505name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 2506names for their various drivers. Affects the AcpiGetObjectInfo external 2507interface, and other internal interfaces as well. 2508 2509Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 2510This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 2511on machines that support non-aligned transfers. Optimizes for this case 2512rather than using a strncpy. With assistance from Zheng Lv. 2513 2514Resource Manager: Small fix for buffer size calculation. Fixed a one byte 2515error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 2516 2517Added a new debug print message for AML mutex objects that are force- 2518released. At control method termination, any currently acquired mutex 2519objects are force-released. Adds a new debug-only message for each one 2520that is released. 2521 2522Audited/updated all ACPICA return macros and the function debug depth 2523counter: 1) Ensure that all functions that use the various TRACE macros 2524also use the appropriate ACPICA return macros. 2) Ensure that all normal 2525return statements surround the return expression (value) with parens to 2526ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 2527Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 2528 2529Global source code changes/maintenance: All extra lines at the start and 2530end of each source file have been removed for consistency. Also, within 2531comments, all new sentences start with a single space instead of a double 2532space, again for consistency across the code base. 2533 2534Example Code and Data Size: These are the sizes for the OS-independent 2535acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2536debug version of the code includes the debug output trace mechanism and 2537has a much larger code and data size. 2538 2539 Previous Release: 2540 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2541 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2542 Current Release: 2543 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2544 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2545 2546 25472) iASL Compiler/Disassembler and Tools: 2548 2549AcpiExec: Improved the algorithm used for memory leak/corruption 2550detection. Added some intelligence to the code that maintains the global 2551list of allocated memory. The list is now ordered by allocated memory 2552address, significantly improving performance. When running AcpiExec on 2553the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 2554on the platform and/or the environment. Note, this performance 2555enhancement affects the AcpiExec utility only, not the kernel-resident 2556ACPICA code. 2557 2558Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 2559the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 2560incorrect table offset reported for invalid opcodes. Report the original 256132-bit value for bad ACPI_NAMEs (as well as the repaired name.) 2562 2563Disassembler: Enhanced the -vt option to emit the binary table data in 2564hex format to assist with debugging. 2565 2566Fixed a potential filename buffer overflow in osunixdir.c. Increased the 2567size of file structure. Colin Ian King. 2568 2569---------------------------------------- 257013 September 2012. Summary of changes for version 20120913: 2571 2572 25731) ACPICA Kernel-resident Subsystem: 2574 2575ACPI 5.0: Added two new notify types for the Hardware Error Notification 2576Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 2577and 2578MCE(6). 2579 2580Table Manager: Merged/removed duplicate code in the root table resize 2581functions. One function is external, the other is internal. Lv Zheng, 2582ACPICA 2583BZ 846. 2584 2585Makefiles: Completely removed the obsolete "Linux" makefiles under 2586acpica/generate/linux. These makefiles are obsolete and have been 2587replaced 2588by 2589the generic unix makefiles under acpica/generate/unix. 2590 2591Makefiles: Ensure that binary files always copied properly. Minor rule 2592change 2593to ensure that the final binary output files are always copied up to the 2594appropriate binary directory (bin32 or bin64.) 2595 2596Example Code and Data Size: These are the sizes for the OS-independent 2597acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2598debug 2599version of the code includes the debug output trace mechanism and has a 2600much 2601larger code and data size. 2602 2603 Previous Release: 2604 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2605 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2606 Current Release: 2607 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2608 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2609 2610 26112) iASL Compiler/Disassembler and Tools: 2612 2613Disassembler: Fixed a possible fault during the disassembly of resource 2614descriptors when a second parse is required because of the invocation of 2615external control methods within the table. With assistance from 2616adq@lidskialf.net. ACPICA BZ 976. 2617 2618iASL: Fixed a namepath optimization problem. An error can occur if the 2619parse 2620node that contains the namepath to be optimized does not have a parent 2621node 2622that is a named object. This change fixes the problem. 2623 2624iASL: Fixed a regression where the AML file is not deleted on errors. The 2625AML 2626output file should be deleted if there are any errors during the 2627compiler. 2628The 2629only exception is if the -f (force output) option is used. ACPICA BZ 974. 2630 2631iASL: Added a feature to automatically increase internal line buffer 2632sizes. 2633Via realloc(), automatically increase the internal line buffer sizes as 2634necessary to support very long source code lines. The current version of 2635the 2636preprocessor requires a buffer long enough to contain full source code 2637lines. 2638This change increases the line buffer(s) if the input lines go beyond the 2639current buffer size. This eliminates errors that occurred when a source 2640code 2641line was longer than the buffer. 2642 2643iASL: Fixed a problem with constant folding in method declarations. The 2644SyncLevel term is a ByteConstExpr, and incorrect code would be generated 2645if a 2646Type3 opcode was used. 2647 2648Debugger: Improved command help support. For incorrect argument count, 2649display 2650full help for the command. For help command itself, allow an argument to 2651specify a command. 2652 2653Test Suites: Several bug fixes for the ASLTS suite reduces the number of 2654errors during execution of the suite. Guan Chao. 2655 2656---------------------------------------- 265716 August 2012. Summary of changes for version 20120816: 2658 2659 26601) ACPICA Kernel-resident Subsystem: 2661 2662Removed all use of the deprecated _GTS and _BFS predefined methods. The 2663_GTS 2664(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 2665deprecated and will probably be removed from the ACPI specification. 2666Windows 2667does not invoke them, and reportedly never will. The final nail in the 2668coffin 2669is that the ACPI specification states that these methods must be run with 2670interrupts off, which is not going to happen in a kernel interpreter. 2671Note: 2672Linux has removed all use of the methods also. It was discovered that 2673invoking these functions caused failures on some machines, probably 2674because 2675they were never tested since Windows does not call them. Affects two 2676external 2677interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 2678ACPICA BZ 969. 2679 2680Implemented support for complex bit-packed buffers returned from the _PLD 2681(Physical Location of Device) predefined method. Adds a new external 2682interface, AcpiDecodePldBuffer that parses the buffer into a more usable 2683C 2684structure. Note: C Bitfields cannot be used for this type of predefined 2685structure since the memory layout of individual bitfields is not defined 2686by 2687the C language. In addition, there are endian concerns where a compiler 2688will 2689change the bitfield ordering based on the machine type. The new ACPICA 2690interface eliminates these issues, and should be called after _PLD is 2691executed. ACPICA BZ 954. 2692 2693Implemented a change to allow a scope change to root (via "Scope (\)") 2694during 2695execution of module-level ASL code (code that is executed at table load 2696time.) Lin Ming. 2697 2698Added the Windows8/Server2012 string for the _OSI method. This change 2699adds 2700a 2701new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 27022012. 2703 2704Added header support for the new ACPI tables DBG2 (Debug Port Table Type 27052) 2706and CSRT (Core System Resource Table). 2707 2708Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 2709names. This simplifies access to the buffers returned by these predefined 2710names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 2711 2712GPE support: Removed an extraneous parameter from the various low-level 2713internal GPE functions. Tang Feng. 2714 2715Removed the linux makefiles from the unix packages. The generate/linux 2716makefiles are obsolete and have been removed from the unix tarball 2717release 2718packages. The replacement makefiles are under generate/unix, and there is 2719a 2720top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 2721 2722Updates for Unix makefiles: 27231) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 27242) Update linker flags (move to end of command line) for AcpiExec 2725utility. 2726Guan Chao. 2727 2728Split ACPICA initialization functions to new file, utxfinit.c. Split from 2729utxface.c to improve modularity and reduce file size. 2730 2731Example Code and Data Size: These are the sizes for the OS-independent 2732acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2733debug version of the code includes the debug output trace mechanism and 2734has a 2735much larger code and data size. 2736 2737 Previous Release: 2738 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2739 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2740 Current Release: 2741 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2742 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2743 2744 27452) iASL Compiler/Disassembler and Tools: 2746 2747iASL: Fixed a problem with constant folding for fixed-length constant 2748expressions. The constant-folding code was not being invoked for constant 2749expressions that allow the use of type 3/4/5 opcodes to generate 2750constants 2751for expressions such as ByteConstExpr, WordConstExpr, etc. This could 2752result 2753in the generation of invalid AML bytecode. ACPICA BZ 970. 2754 2755iASL: Fixed a generation issue on newer versions of Bison. Newer versions 2756apparently automatically emit some of the necessary externals. This 2757change 2758handles these versions in order to eliminate generation warnings. 2759 2760Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 2761 2762Disassembler: Add support to decode _PLD buffers. The decoded buffer 2763appears 2764within comments in the output file. 2765 2766Debugger: Fixed a regression with the "Threads" command where 2767AE_BAD_PARAMETER was always returned. 2768 2769---------------------------------------- 277011 July 2012. Summary of changes for version 20120711: 2771 27721) ACPICA Kernel-resident Subsystem: 2773 2774Fixed a possible fault in the return package object repair code. Fixes a 2775problem that can occur when a lone package object is wrapped with an 2776outer 2777package object in order to force conformance to the ACPI specification. 2778Can 2779affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 2780_DLM, 2781_CSD, _PSD, _TSD. 2782 2783Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 2784PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 2785ARB_DIS bit must be implemented in the host-dependent C3 processor power 2786state 2787support. Note, ARB_DIS is obsolete and only applies to older chipsets, 2788both 2789Intel and other vendors. (for Intel: ICH4-M and earlier) 2790 2791This change removes the code to disable/enable bus master arbitration 2792during 2793suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 2794causes 2795resume problems on some machines. The change has been in use for over 2796seven 2797years within Linux. 2798 2799Implemented two new external interfaces to support host-directed dynamic 2800ACPI 2801table load and unload. They are intended to simplify the host 2802implementation 2803of hot-plug support: 2804 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 2805 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 2806table. 2807See the ACPICA reference for additional details. Adds one new file, 2808components/tables/tbxfload.c 2809 2810Implemented and deployed two new interfaces for errors and warnings that 2811are 2812known to be caused by BIOS/firmware issues: 2813 AcpiBiosError: Prints "ACPI Firmware Error" message. 2814 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 2815Deployed these new interfaces in the ACPICA Table Manager code for ACPI 2816table 2817and FADT errors. Additional deployment to be completed as appropriate in 2818the 2819future. The associated conditional macros are ACPI_BIOS_ERROR and 2820ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 2821ACPICA 2822BZ 2823843. 2824 2825Implicit notify support: ensure that no memory allocation occurs within a 2826critical region. This fix moves a memory allocation outside of the time 2827that a 2828spinlock is held. Fixes issues on systems that do not allow this 2829behavior. 2830Jung-uk Kim. 2831 2832Split exception code utilities and tables into a new file, 2833utilities/utexcep.c 2834 2835Example Code and Data Size: These are the sizes for the OS-independent 2836acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2837debug 2838version of the code includes the debug output trace mechanism and has a 2839much 2840larger code and data size. 2841 2842 Previous Release: 2843 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2844 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2845 Current Release: 2846 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2847 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2848 2849 28502) iASL Compiler/Disassembler and Tools: 2851 2852iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 2853of 28540. Jung-uk Kim. 2855 2856Debugger: Enhanced the "tables" command to emit additional information 2857about 2858the current set of ACPI tables, including the owner ID and flags decode. 2859 2860Debugger: Reimplemented the "unload" command to use the new 2861AcpiUnloadParentTable external interface. This command was disable 2862previously 2863due to need for an unload interface. 2864 2865AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 2866option 2867will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 2868 2869---------------------------------------- 287020 June 2012. Summary of changes for version 20120620: 2871 2872 28731) ACPICA Kernel-resident Subsystem: 2874 2875Implemented support to expand the "implicit notify" feature to allow 2876multiple 2877devices to be notified by a single GPE. This feature automatically 2878generates a 2879runtime device notification in the absence of a BIOS-provided GPE control 2880method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 2881notify is 2882provided by ACPICA for Windows compatibility, and is a workaround for 2883BIOS 2884AML 2885code errors. See the description of the AcpiSetupGpeForWake interface in 2886the 2887APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 2888 2889Changed some comments and internal function names to simplify and ensure 2890correctness of the Linux code translation. No functional changes. 2891 2892Example Code and Data Size: These are the sizes for the OS-independent 2893acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2894debug 2895version of the code includes the debug output trace mechanism and has a 2896much 2897larger code and data size. 2898 2899 Previous Release: 2900 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2901 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2902 Current Release: 2903 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2904 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2905 2906 29072) iASL Compiler/Disassembler and Tools: 2908 2909Disassembler: Added support to emit short, commented descriptions for the 2910ACPI 2911predefined names in order to improve the readability of the disassembled 2912output. ACPICA BZ 959. Changes include: 2913 1) Emit descriptions for all standard predefined names (_INI, _STA, 2914_PRW, 2915etc.) 2916 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 2917 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 2918etc.) 2919 2920AcpiSrc: Fixed several long-standing Linux code translation issues. 2921Argument 2922descriptions in function headers are now translated properly to lower 2923case 2924and 2925underscores. ACPICA BZ 961. Also fixes translation problems such as 2926these: 2927(old -> new) 2928 i_aSL -> iASL 2929 00-7_f -> 00-7F 2930 16_k -> 16K 2931 local_fADT -> local_FADT 2932 execute_oSI -> execute_OSI 2933 2934iASL: Fixed a problem where null bytes were inadvertently emitted into 2935some 2936listing files. 2937 2938iASL: Added the existing debug options to the standard help screen. There 2939are 2940no longer two different help screens. ACPICA BZ 957. 2941 2942AcpiHelp: Fixed some typos in the various predefined name descriptions. 2943Also 2944expand some of the descriptions where appropriate. 2945 2946iASL: Fixed the -ot option (display compile times/statistics). Was not 2947working 2948properly for standard output; only worked for the debug file case. 2949 2950---------------------------------------- 295118 May 2012. Summary of changes for version 20120518: 2952 2953 29541) ACPICA Core Subsystem: 2955 2956Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 2957defined 2958to block until asynchronous events such as notifies and GPEs have 2959completed. 2960Within ACPICA, it is only called before a notify or GPE handler is 2961removed/uninstalled. It also may be useful for the host OS within related 2962drivers such as the Embedded Controller driver. See the ACPICA reference 2963for 2964additional information. ACPICA BZ 868. 2965 2966ACPI Tables: Added a new error message for a possible overflow failure 2967during 2968the conversion of FADT 32-bit legacy register addresses to internal 2969common 297064- 2971bit GAS structure representation. The GAS has a one-byte "bit length" 2972field, 2973thus limiting the register length to 255 bits. ACPICA BZ 953. 2974 2975Example Code and Data Size: These are the sizes for the OS-independent 2976acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2977debug 2978version of the code includes the debug output trace mechanism and has a 2979much 2980larger code and data size. 2981 2982 Previous Release: 2983 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2984 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2985 Current Release: 2986 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2987 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2988 2989 29902) iASL Compiler/Disassembler and Tools: 2991 2992iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 2993macro. 2994This keyword was added late in the ACPI 5.0 release cycle and was not 2995implemented until now. 2996 2997Disassembler: Added support for Operation Region externals. Adds missing 2998support for operation regions that are defined in another table, and 2999referenced locally via a Field or BankField ASL operator. Now generates 3000the 3001correct External statement. 3002 3003Disassembler: Several additional fixes for the External() statement 3004generation 3005related to some ASL operators. Also, order the External() statements 3006alphabetically in the disassembler output. Fixes the External() 3007generation 3008for 3009the Create* field, Alias, and Scope operators: 3010 1) Create* buffer field operators - fix type mismatch warning on 3011disassembly 3012 2) Alias - implement missing External support 3013 3) Scope - fix to make sure all necessary externals are emitted. 3014 3015iASL: Improved pathname support. For include files, merge the prefix 3016pathname 3017with the file pathname and eliminate unnecessary components. Convert 3018backslashes in all pathnames to forward slashes, for readability. Include 3019file 3020pathname changes affect both #include and Include() type operators. 3021 3022iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 3023end 3024of a valid line by inserting a newline and then returning the EOF during 3025the 3026next call to GetNextLine. Prevents the line from being ignored due to EOF 3027condition. 3028 3029iASL: Implemented some changes to enhance the IDE support (-vi option.) 3030Error 3031and Warning messages are now correctly recognized for both the source 3032code 3033browser and the global error and warning counts. 3034 3035---------------------------------------- 303620 April 2012. Summary of changes for version 20120420: 3037 3038 30391) ACPICA Core Subsystem: 3040 3041Implemented support for multiple notify handlers. This change adds 3042support 3043to 3044allow multiple system and device notify handlers on Device, Thermal Zone, 3045and 3046Processor objects. This can simplify the host OS notification 3047implementation. 3048Also re-worked and restructured the entire notify support code to 3049simplify 3050handler installation, handler removal, notify event queuing, and notify 3051dispatch to handler(s). Note: there can still only be two global notify 3052handlers - one for system notifies and one for device notifies. There are 3053no 3054changes to the existing handler install/remove interfaces. Lin Ming, Bob 3055Moore, Rafael Wysocki. 3056 3057Fixed a regression in the package repair code where the object reference 3058count was calculated incorrectly. Regression was introduced in the commit 3059"Support to add Package wrappers". 3060 3061Fixed a couple possible memory leaks in the AML parser, in the error 3062recovery 3063path. Jesper Juhl, Lin Ming. 3064 3065Example Code and Data Size: These are the sizes for the OS-independent 3066acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3067debug version of the code includes the debug output trace mechanism and 3068has a 3069much larger code and data size. 3070 3071 Previous Release: 3072 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3073 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3074 Current Release: 3075 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3076 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3077 3078 30792) iASL Compiler/Disassembler and Tools: 3080 3081iASL: Fixed a problem with the resource descriptor support where the 3082length 3083of the StartDependentFn and StartDependentFnNoPrio descriptors were not 3084included in cumulative descriptor offset, resulting in incorrect values 3085for 3086resource tags within resource descriptors appearing after a 3087StartDependent* 3088descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 3089 3090iASL and Preprocessor: Implemented full support for the #line directive 3091to 3092correctly track original source file line numbers through the .i 3093preprocessor 3094output file - for error and warning messages. 3095 3096iASL: Expand the allowable byte constants for address space IDs. 3097Previously, 3098the allowable range was 0x80-0xFF (user-defined spaces), now the range is 30990x0A-0xFF to allow for custom and new IDs without changing the compiler. 3100 3101iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 3102 3103iASL: Add option to completely disable the preprocessor (-Pn). 3104 3105iASL: Now emit all error/warning messages to standard error (stderr) by 3106default (instead of the previous stdout). 3107 3108ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 3109Update 3110for resource descriptor offset fix above. Update/cleanup error output 3111routines. Enable and send iASL errors/warnings to an error logfile 3112(error.txt). Send all other iASL output to a logfile (compiler.txt). 3113Fixed 3114several extraneous "unrecognized operator" messages. 3115 3116---------------------------------------- 311720 March 2012. Summary of changes for version 20120320: 3118 3119 31201) ACPICA Core Subsystem: 3121 3122Enhanced the sleep/wake interfaces to optionally execute the _GTS method 3123(Going To Sleep) and the _BFS method (Back From Sleep). Windows 3124apparently 3125does not execute these methods, and therefore these methods are often 3126untested. It has been seen on some systems where the execution of these 3127methods causes errors and also prevents the machine from entering S5. It 3128is 3129therefore suggested that host operating systems do not execute these 3130methods 3131by default. In the future, perhaps these methods can be optionally 3132executed 3133based on the age of the system and/or what is the newest version of 3134Windows 3135that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 3136and 3137AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 3138Ming. 3139 3140Fixed a problem where the length of the local/common FADT was set too 3141early. 3142The local FADT table length cannot be set to the common length until the 3143original length has been examined. There is code that checks the table 3144length 3145and sets various fields appropriately. This can affect older machines 3146with 3147early FADT versions. For example, this can cause inadvertent writes to 3148the 3149CST_CNT register. Julian Anastasov. 3150 3151Fixed a mapping issue related to a physical table override. Use the 3152deferred 3153mapping mechanism for tables loaded via the physical override OSL 3154interface. 3155This allows for early mapping before the virtual memory manager is 3156available. 3157Thomas Renninger, Bob Moore. 3158 3159Enhanced the automatic return-object repair code: Repair a common problem 3160with 3161predefined methods that are defined to return a variable-length Package 3162of 3163sub-objects. If there is only one sub-object, some BIOS ASL code 3164mistakenly 3165simply returns the single object instead of a Package with one sub- 3166object. 3167This new support will repair this error by wrapping a Package object 3168around 3169the original object, creating the correct and expected Package with one 3170sub- 3171object. Names that can be repaired in this manner include: _ALR, _CSD, 3172_HPX, 3173_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 3174939. 3175 3176Changed the exception code returned for invalid ACPI paths passed as 3177parameters to external interfaces such as AcpiEvaluateObject. Was 3178AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 3179 3180Example Code and Data Size: These are the sizes for the OS-independent 3181acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3182debug 3183version of the code includes the debug output trace mechanism and has a 3184much 3185larger code and data size. 3186 3187 Previous Release: 3188 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3189 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3190 Current Release: 3191 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3192 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3193 3194 31952) iASL Compiler/Disassembler and Tools: 3196 3197iASL: Added the infrastructure and initial implementation of a integrated 3198C- 3199like preprocessor. This will simplify BIOS development process by 3200eliminating 3201the need for a separate preprocessing step during builds. On Windows, it 3202also 3203eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 3204features including full #define() macro support are still under 3205development. 3206These preprocessor directives are supported: 3207 #define 3208 #elif 3209 #else 3210 #endif 3211 #error 3212 #if 3213 #ifdef 3214 #ifndef 3215 #include 3216 #pragma message 3217 #undef 3218 #warning 3219In addition, these new command line options are supported: 3220 -D <symbol> Define symbol for preprocessor use 3221 -li Create preprocessed output file (*.i) 3222 -P Preprocess only and create preprocessor output file (*.i) 3223 3224Table Compiler: Fixed a problem where the equals operator within an 3225expression 3226did not work properly. 3227 3228Updated iASL to use the current versions of Bison/Flex. Updated the 3229Windows 3230project file to invoke these tools from the standard location. ACPICA BZ 3231904. 3232Versions supported: 3233 Flex for Windows: V2.5.4 3234 Bison for Windows: V2.4.1 3235 3236---------------------------------------- 323715 February 2012. Summary of changes for version 20120215: 3238 3239 32401) ACPICA Core Subsystem: 3241 3242There have been some major changes to the sleep/wake support code, as 3243described below (a - e). 3244 3245a) The AcpiLeaveSleepState has been split into two interfaces, similar to 3246AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 3247AcpiLeaveSleepStatePrep. This allows the host to perform actions between 3248the 3249time the _BFS method is called and the _WAK method is called. NOTE: all 3250hosts 3251must update their wake/resume code or else sleep/wake will not work 3252properly. 3253Rafael Wysocki. 3254 3255b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 3256_WAK 3257method. Some machines require that the GPEs are enabled before the _WAK 3258method 3259is executed. Thomas Renninger. 3260 3261c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 3262bit. 3263Some BIOS code assumes that WAK_STS will be cleared on resume and use it 3264to 3265determine whether the system is rebooting or resuming. Matthew Garrett. 3266 3267d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 3268Sleep) to 3269match the ACPI specification requirement. Rafael Wysocki. 3270 3271e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 3272registers within the V5 FADT. This support adds two new files: 3273hardware/hwesleep.c implements the support for the new registers. Moved 3274all 3275sleep/wake external interfaces to hardware/hwxfsleep.c. 3276 3277 3278Added a new OSL interface for ACPI table overrides, 3279AcpiOsPhysicalTableOverride. This interface allows the host to override a 3280table via a physical address, instead of the logical address required by 3281AcpiOsTableOverride. This simplifies the host implementation. Initial 3282implementation by Thomas Renninger. The ACPICA implementation creates a 3283single 3284shared function for table overrides that attempts both a logical and a 3285physical override. 3286 3287Expanded the OSL memory read/write interfaces to 64-bit data 3288(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 3289transfer support for GAS register structures passed to AcpiRead and 3290AcpiWrite. 3291 3292Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 3293custom 3294build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 3295model. 3296See the ACPICA reference for details. ACPICA BZ 942. This option removes 3297about 329810% of the code and 5% of the static data, and the following hardware 3299ACPI 3300features become unavailable: 3301 PM Event and Control registers 3302 SCI interrupt (and handler) 3303 Fixed Events 3304 General Purpose Events (GPEs) 3305 Global Lock 3306 ACPI PM timer 3307 FACS table (Waking vectors and Global Lock) 3308 3309Updated the unix tarball directory structure to match the ACPICA git 3310source 3311tree. This ensures that the generic unix makefiles work properly (in 3312generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 3313867. 3314 3315Updated the return value of the _REV predefined method to integer value 5 3316to 3317reflect ACPI 5.0 support. 3318 3319Moved the external ACPI PM timer interface prototypes to the public 3320acpixf.h 3321file where they belong. 3322 3323Example Code and Data Size: These are the sizes for the OS-independent 3324acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3325debug 3326version of the code includes the debug output trace mechanism and has a 3327much 3328larger code and data size. 3329 3330 Previous Release: 3331 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3332 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3333 Current Release: 3334 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3335 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3336 3337 33382) iASL Compiler/Disassembler and Tools: 3339 3340Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 3341descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 3342incorrectly displayed. 3343 3344AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 3345specification. 3346 3347---------------------------------------- 334811 January 2012. Summary of changes for version 20120111: 3349 3350 33511) ACPICA Core Subsystem: 3352 3353Implemented a new mechanism to allow host device drivers to check for 3354address 3355range conflicts with ACPI Operation Regions. Both SystemMemory and 3356SystemIO 3357address spaces are supported. A new external interface, 3358AcpiCheckAddressRange, 3359allows drivers to check an address range against the ACPI namespace. See 3360the 3361ACPICA reference for additional details. Adds one new file, 3362utilities/utaddress.c. Lin Ming, Bob Moore. 3363 3364Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 3365Control 3366and 3367Status registers, update the ACPI 5.0 flags, and update internal data 3368structures to handle an FADT larger than 256 bytes. The size of the ACPI 33695.0 3370FADT is 268 bytes. 3371 3372Updated all ACPICA copyrights and signons to 2012. Added the 2012 3373copyright to 3374all module headers and signons, including the standard Linux header. This 3375affects virtually every file in the ACPICA core subsystem, iASL compiler, 3376and 3377all ACPICA utilities. 3378 3379Example Code and Data Size: These are the sizes for the OS-independent 3380acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3381debug 3382version of the code includes the debug output trace mechanism and has a 3383much 3384larger code and data size. 3385 3386 Previous Release: 3387 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3388 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3389 Current Release: 3390 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3391 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3392 3393 33942) iASL Compiler/Disassembler and Tools: 3395 3396Disassembler: fixed a problem with the automatic resource tag generation 3397support. Fixes a problem where the resource tags are inadvertently not 3398constructed if the table being disassembled contains external references 3399to 3400control methods. Moved the actual construction of the tags to after the 3401final 3402namespace is constructed (after 2nd parse is invoked due to external 3403control 3404method references.) ACPICA BZ 941. 3405 3406Table Compiler: Make all "generic" operators caseless. These are the 3407operators 3408like UINT8, String, etc. Making these caseless improves ease-of-use. 3409ACPICA BZ 3410934. 3411 3412---------------------------------------- 341323 November 2011. Summary of changes for version 20111123: 3414 34150) ACPI 5.0 Support: 3416 3417This release contains full support for the ACPI 5.0 specification, as 3418summarized below. 3419 3420Reduced Hardware Support: 3421------------------------- 3422 3423This support allows for ACPI systems without the usual ACPI hardware. 3424This 3425support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 3426will 3427not attempt to initialize or use any of the usual ACPI hardware. Note, 3428when 3429this flag is set, all of the following ACPI hardware is assumed to be not 3430present and is not initialized or accessed: 3431 3432 General Purpose Events (GPEs) 3433 Fixed Events (PM1a/PM1b and PM Control) 3434 Power Management Timer and Console Buttons (power/sleep) 3435 Real-time Clock Alarm 3436 Global Lock 3437 System Control Interrupt (SCI) 3438 The FACS is assumed to be non-existent 3439 3440ACPI Tables: 3441------------ 3442 3443All new tables and updates to existing tables are fully supported in the 3444ACPICA headers (for use by device drivers), the disassembler, and the 3445iASL 3446Data Table Compiler. ACPI 5.0 defines these new tables: 3447 3448 BGRT /* Boot Graphics Resource Table */ 3449 DRTM /* Dynamic Root of Trust for Measurement table */ 3450 FPDT /* Firmware Performance Data Table */ 3451 GTDT /* Generic Timer Description Table */ 3452 MPST /* Memory Power State Table */ 3453 PCCT /* Platform Communications Channel Table */ 3454 PMTT /* Platform Memory Topology Table */ 3455 RASF /* RAS Feature table */ 3456 3457Operation Regions/SpaceIDs: 3458--------------------------- 3459 3460All new operation regions are fully supported by the iASL compiler, the 3461disassembler, and the ACPICA runtime code (for dispatch to region 3462handlers.) 3463The new operation region Space IDs are: 3464 3465 GeneralPurposeIo 3466 GenericSerialBus 3467 3468Resource Descriptors: 3469--------------------- 3470 3471All new ASL resource descriptors are fully supported by the iASL 3472compiler, 3473the 3474ASL/AML disassembler, and the ACPICA runtime Resource Manager code 3475(including 3476all new predefined resource tags). New descriptors are: 3477 3478 FixedDma 3479 GpioIo 3480 GpioInt 3481 I2cSerialBus 3482 SpiSerialBus 3483 UartSerialBus 3484 3485ASL/AML Operators, New and Modified: 3486------------------------------------ 3487 3488One new operator is added, the Connection operator, which is used to 3489associate 3490a GeneralPurposeIo or GenericSerialBus resource descriptor with 3491individual 3492field objects within an operation region. Several new protocols are 3493associated 3494with the AccessAs operator. All are fully supported by the iASL compiler, 3495disassembler, and runtime ACPICA AML interpreter: 3496 3497 Connection // Declare Field Connection 3498attributes 3499 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 3500 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 3501Protocol 3502 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 3503 RawDataBuffer // Data type for Vendor Data 3504fields 3505 3506Predefined ASL/AML Objects: 3507--------------------------- 3508 3509All new predefined objects/control-methods are supported by the iASL 3510compiler 3511and the ACPICA runtime validation/repair (arguments and return values.) 3512New 3513predefined names include the following: 3514 3515Standard Predefined Names (Objects or Control Methods): 3516 _AEI, _CLS, _CPC, _CWS, _DEP, 3517 _DLM, _EVT, _GCP, _CRT, _GWS, 3518 _HRV, _PRE, _PSE, _SRT, _SUB. 3519 3520Resource Tags (Names used to access individual fields within resource 3521descriptors): 3522 _DBT, _DPL, _DRS, _END, _FLC, 3523 _IOR, _LIN, _MOD, _PAR, _PHA, 3524 _PIN, _PPI, _POL, _RXL, _SLV, 3525 _SPE, _STB, _TXL, _VEN. 3526 3527ACPICA External Interfaces: 3528--------------------------- 3529 3530Several new interfaces have been defined for use by ACPI-related device 3531drivers and other host OS services: 3532 3533AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 3534to 3535acquire and release AML mutexes that are defined in the DSDT/SSDT tables 3536provided by the BIOS. They are intended to be used in conjunction with 3537the 3538ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 3539mutual exclusion with the AML code/interpreter. 3540 3541AcpiGetEventResources: Returns the (formatted) resource descriptors as 3542defined 3543by the ACPI 5.0 _AEI object (ACPI Event Information). This object 3544provides 3545resource descriptors associated with hardware-reduced platform events, 3546similar 3547to the AcpiGetCurrentResources interface. 3548 3549Operation Region Handlers: For General Purpose IO and Generic Serial Bus 3550operation regions, information about the Connection() object and any 3551optional 3552length information is passed to the region handler within the Context 3553parameter. 3554 3555AcpiBufferToResource: This interface converts a raw AML buffer containing 3556a 3557resource template or resource descriptor to the ACPI_RESOURCE internal 3558format 3559suitable for use by device drivers. Can be used by an operation region 3560handler 3561to convert the Connection() buffer object into a ACPI_RESOURCE. 3562 3563Miscellaneous/Tools/TestSuites: 3564------------------------------- 3565 3566Support for extended _HID names (Four alpha characters instead of three). 3567Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 3568Support for ACPI 5.0 features in the ASLTS test suite. 3569Fully updated documentation (ACPICA and iASL reference documents.) 3570 3571ACPI Table Definition Language: 3572------------------------------- 3573 3574Support for this language was implemented and released as a subsystem of 3575the 3576iASL compiler in 2010. (See the iASL compiler User Guide.) 3577 3578 3579Non-ACPI 5.0 changes for this release: 3580-------------------------------------- 3581 35821) ACPICA Core Subsystem: 3583 3584Fix a problem with operation region declarations where a failure can 3585occur 3586if 3587the region name and an argument that evaluates to an object (such as the 3588region address) are in different namespace scopes. Lin Ming, ACPICA BZ 3589937. 3590 3591Do not abort an ACPI table load if an invalid space ID is found within. 3592This 3593will be caught later if the offending method is executed. ACPICA BZ 925. 3594 3595Fixed an issue with the FFixedHW space ID where the ID was not always 3596recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 3597 3598Fixed a problem with the 32-bit generation of the unix-specific OSL 3599(osunixxf.c). Lin Ming, ACPICA BZ 936. 3600 3601Several changes made to enable generation with the GCC 4.6 compiler. 3602ACPICA BZ 3603935. 3604 3605New error messages: Unsupported I/O requests (not 8/16/32 bit), and 3606Index/Bank 3607field registers out-of-range. 3608 36092) iASL Compiler/Disassembler and Tools: 3610 3611iASL: Implemented the __PATH__ operator, which returns the full pathname 3612of 3613the current source file. 3614 3615AcpiHelp: Automatically display expanded keyword information for all ASL 3616operators. 3617 3618Debugger: Add "Template" command to disassemble/dump resource template 3619buffers. 3620 3621Added a new master script to generate and execute the ASLTS test suite. 3622Automatically handles 32- and 64-bit generation. See tests/aslts.sh 3623 3624iASL: Fix problem with listing generation during processing of the 3625Switch() 3626operator where AML listing was disabled until the entire Switch block was 3627completed. 3628 3629iASL: Improve support for semicolon statement terminators. Fix "invalid 3630character" message for some cases when the semicolon is used. Semicolons 3631are 3632now allowed after every <Term> grammar element. ACPICA BZ 927. 3633 3634iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 3635923. 3636 3637Disassembler: Fix problem with disassembly of the DataTableRegion 3638operator 3639where an inadvertent "Unhandled deferred opcode" message could be 3640generated. 3641 36423) Example Code and Data Size 3643 3644These are the sizes for the OS-independent acpica.lib produced by the 3645Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3646includes the debug output trace mechanism and has a much larger code and 3647data 3648size. 3649 3650 Previous Release: 3651 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3652 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3653 Current Release: 3654 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3655 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3656 3657---------------------------------------- 365822 September 2011. Summary of changes for version 20110922: 3659 36600) ACPI 5.0 News: 3661 3662Support for ACPI 5.0 in ACPICA has been underway for several months and 3663will 3664be released at the same time that ACPI 5.0 is officially released. 3665 3666The ACPI 5.0 specification is on track for release in the next few 3667months. 3668 36691) ACPICA Core Subsystem: 3670 3671Fixed a problem where the maximum sleep time for the Sleep() operator was 3672intended to be limited to two seconds, but was inadvertently limited to 367320 3674seconds instead. 3675 3676Linux and Unix makefiles: Added header file dependencies to ensure 3677correct 3678generation of ACPICA core code and utilities. Also simplified the 3679makefiles 3680considerably through the use of the vpath variable to specify search 3681paths. 3682ACPICA BZ 924. 3683 36842) iASL Compiler/Disassembler and Tools: 3685 3686iASL: Implemented support to check the access length for all fields 3687created to 3688access named Resource Descriptor fields. For example, if a resource field 3689is 3690defined to be two bits, a warning is issued if a CreateXxxxField() is 3691used 3692with an incorrect bit length. This is implemented for all current 3693resource 3694descriptor names. ACPICA BZ 930. 3695 3696Disassembler: Fixed a byte ordering problem with the output of 24-bit and 369756- 3698bit integers. 3699 3700iASL: Fixed a couple of issues associated with variable-length package 3701objects. 1) properly handle constants like One, Ones, Zero -- do not make 3702a 3703VAR_PACKAGE when these are used as a package length. 2) Allow the 3704VAR_PACKAGE 3705opcode (in addition to PACKAGE) when validating object types for 3706predefined 3707names. 3708 3709iASL: Emit statistics for all output files (instead of just the ASL input 3710and 3711AML output). Includes listings, hex files, etc. 3712 3713iASL: Added -G option to the table compiler to allow the compilation of 3714custom 3715ACPI tables. The only part of a table that is required is the standard 371636- 3717byte 3718ACPI header. 3719 3720AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 3721headers), 3722which also adds correct 64-bit support. Also, now all output filenames 3723are 3724completely lower case. 3725 3726AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 3727loading table files. A warning is issued for any such tables. The only 3728exception is an FADT. This also fixes a possible fault when attempting to 3729load 3730non-AML tables. ACPICA BZ 932. 3731 3732AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 3733a 3734missing table terminator could cause a fault when using the -p option. 3735 3736AcpiSrc: Fixed a possible divide-by-zero fault when generating file 3737statistics. 3738 37393) Example Code and Data Size 3740 3741These are the sizes for the OS-independent acpica.lib produced by the 3742Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3743includes the debug output trace mechanism and has a much larger code and 3744data 3745size. 3746 3747 Previous Release (VC 9.0): 3748 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3749 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3750 Current Release (VC 9.0): 3751 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3752 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3753 3754 3755---------------------------------------- 375623 June 2011. Summary of changes for version 20110623: 3757 37581) ACPI CA Core Subsystem: 3759 3760Updated the predefined name repair mechanism to not attempt repair of a 3761_TSS 3762return object if a _PSS object is present. We can only sort the _TSS 3763return 3764package if there is no _PSS within the same scope. This is because if 3765_PSS 3766is 3767present, the ACPI specification dictates that the _TSS Power Dissipation 3768field 3769is to be ignored, and therefore some BIOSs leave garbage values in the 3770_TSS 3771Power field(s). In this case, it is best to just return the _TSS package 3772as- 3773is. Reported by, and fixed with assistance from Fenghua Yu. 3774 3775Added an option to globally disable the control method return value 3776validation 3777and repair. This runtime option can be used to disable return value 3778repair 3779if 3780this is causing a problem on a particular machine. Also added an option 3781to 3782AcpiExec (-dr) to set this disable flag. 3783 3784All makefiles and project files: Major changes to improve generation of 3785ACPICA 3786tools. ACPICA BZ 912: 3787 Reduce default optimization levels to improve compatibility 3788 For Linux, add strict-aliasing=0 for gcc 4 3789 Cleanup and simplify use of command line defines 3790 Cleanup multithread library support 3791 Improve usage messages 3792 3793Linux-specific header: update handling of THREAD_ID and pthread. For the 379432- 3795bit case, improve casting to eliminate possible warnings, especially with 3796the 3797acpica tools. 3798 3799Example Code and Data Size: These are the sizes for the OS-independent 3800acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3801debug 3802version of the code includes the debug output trace mechanism and has a 3803much 3804larger code and data size. 3805 3806 Previous Release (VC 9.0): 3807 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3808 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3809 Current Release (VC 9.0): 3810 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3811 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3812 38132) iASL Compiler/Disassembler and Tools: 3814 3815With this release, a new utility named "acpihelp" has been added to the 3816ACPICA 3817package. This utility summarizes the ACPI specification chapters for the 3818ASL 3819and AML languages. It generates under Linux/Unix as well as Windows, and 3820provides the following functionality: 3821 Find/display ASL operator(s) -- with description and syntax. 3822 Find/display ASL keyword(s) -- with exact spelling and descriptions. 3823 Find/display ACPI predefined name(s) -- with description, number 3824 of arguments, and the return value data type. 3825 Find/display AML opcode name(s) -- with opcode, arguments, and 3826grammar. 3827 Decode/display AML opcode -- with opcode name, arguments, and 3828grammar. 3829 3830Service Layers: Make multi-thread support configurable. Conditionally 3831compile 3832the multi-thread support so that threading libraries will not be linked 3833if 3834not 3835necessary. The only tool that requires multi-thread support is AcpiExec. 3836 3837iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 3838of 3839Bison appear to want the interface to yyerror to be a const char * (or at 3840least this is a problem when generating iASL on some systems.) ACPICA BZ 3841923 3842Pierre Lejeune. 3843 3844Tools: Fix for systems where O_BINARY is not defined. Only used for 3845Windows 3846versions of the tools. 3847 3848---------------------------------------- 384927 May 2011. Summary of changes for version 20110527: 3850 38511) ACPI CA Core Subsystem: 3852 3853ASL Load() operator: Reinstate most restrictions on the incoming ACPI 3854table 3855signature. Now, only allow SSDT, OEMx, and a null signature. History: 3856 1) Originally, we checked the table signature for "SSDT" or "PSDT". 3857 (PSDT is now obsolete.) 3858 2) We added support for OEMx tables, signature "OEM" plus a fourth 3859 "don't care" character. 3860 3) Valid tables were encountered with a null signature, so we just 3861 gave up on validating the signature, (05/2008). 3862 4) We encountered non-AML tables such as the MADT, which caused 3863 interpreter errors and kernel faults. So now, we once again allow 3864 only SSDT, OEMx, and now, also a null signature. (05/2011). 3865 3866Added the missing _TDL predefined name to the global name list in order 3867to 3868enable validation. Affects both the core ACPICA code and the iASL 3869compiler. 3870 3871Example Code and Data Size: These are the sizes for the OS-independent 3872acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3873debug 3874version of the code includes the debug output trace mechanism and has a 3875much 3876larger code and data size. 3877 3878 Previous Release (VC 9.0): 3879 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3880 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3881 Current Release (VC 9.0): 3882 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3883 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3884 38852) iASL Compiler/Disassembler and Tools: 3886 3887Debugger/AcpiExec: Implemented support for "complex" method arguments on 3888the 3889debugger command line. This adds support beyond simple integers -- 3890including 3891Strings, Buffers, and Packages. Includes support for nested packages. 3892Increased the default command line buffer size to accommodate these 3893arguments. 3894See the ACPICA reference for details and syntax. ACPICA BZ 917. 3895 3896Debugger/AcpiExec: Implemented support for "default" method arguments for 3897the 3898Execute/Debug command. Now, the debugger will always invoke a control 3899method 3900with the required number of arguments -- even if the command line 3901specifies 3902none or insufficient arguments. It uses default integer values for any 3903missing 3904arguments. Also fixes a bug where only six method arguments maximum were 3905supported instead of the required seven. 3906 3907Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 3908and 3909also return status in order to prevent buffer overruns. See the ACPICA 3910reference for details and syntax. ACPICA BZ 921 3911 3912iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 3913makefiles to simplify support for the two different but similar parser 3914generators, bison and yacc. 3915 3916Updated the generic unix makefile for gcc 4. The default gcc version is 3917now 3918expected to be 4 or greater, since options specific to gcc 4 are used. 3919 3920---------------------------------------- 392113 April 2011. Summary of changes for version 20110413: 3922 39231) ACPI CA Core Subsystem: 3924 3925Implemented support to execute a so-called "orphan" _REG method under the 3926EC 3927device. This change will force the execution of a _REG method underneath 3928the 3929EC 3930device even if there is no corresponding operation region of type 3931EmbeddedControl. Fixes a problem seen on some machines and apparently is 3932compatible with Windows behavior. ACPICA BZ 875. 3933 3934Added more predefined methods that are eligible for automatic NULL 3935package 3936element removal. This change adds another group of predefined names to 3937the 3938list 3939of names that can be repaired by having NULL package elements dynamically 3940removed. This group are those methods that return a single variable- 3941length 3942package containing simple data types such as integers, buffers, strings. 3943This 3944includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 3945_PSL, 3946_Sx, 3947and _TZD. ACPICA BZ 914. 3948 3949Split and segregated all internal global lock functions to a new file, 3950evglock.c. 3951 3952Updated internal address SpaceID for DataTable regions. Moved this 3953internal 3954space 3955id in preparation for ACPI 5.0 changes that will include some new space 3956IDs. 3957This 3958change should not affect user/host code. 3959 3960Example Code and Data Size: These are the sizes for the OS-independent 3961acpica.lib 3962produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3963version of 3964the code includes the debug output trace mechanism and has a much larger 3965code 3966and 3967data size. 3968 3969 Previous Release (VC 9.0): 3970 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3971 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3972 Current Release (VC 9.0): 3973 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3974 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3975 39762) iASL Compiler/Disassembler and Tools: 3977 3978iASL/DTC: Major update for new grammar features. Allow generic data types 3979in 3980custom ACPI tables. Field names are now optional. Any line can be split 3981to 3982multiple lines using the continuation char (\). Large buffers now use 3983line- 3984continuation character(s) and no colon on the continuation lines. See the 3985grammar 3986update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 3987Moore. 3988 3989iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 3990statements. 3991Since the parser stuffs a "zero" as the return value for these statements 3992(due 3993to 3994the underlying AML grammar), they were seen as "return with value" by the 3995iASL 3996semantic checking. They are now seen correctly as "null" return 3997statements. 3998 3999iASL: Check if a_REG declaration has a corresponding Operation Region. 4000Adds a 4001check for each _REG to ensure that there is in fact a corresponding 4002operation 4003region declaration in the same scope. If not, the _REG method is not very 4004useful 4005since it probably won't be executed. ACPICA BZ 915. 4006 4007iASL/DTC: Finish support for expression evaluation. Added a new 4008expression 4009parser 4010that implements c-style operator precedence and parenthesization. ACPICA 4011bugzilla 4012908. 4013 4014Disassembler/DTC: Remove support for () and <> style comments in data 4015tables. 4016Now 4017that DTC has full expression support, we don't want to have comment 4018strings 4019that 4020start with a parentheses or a less-than symbol. Now, only the standard /* 4021and 4022// 4023comments are supported, as well as the bracket [] comments. 4024 4025AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 4026"unusual" 4027headers in the acpidump file. Update the header validation to support 4028these 4029tables. Problem introduced in previous AcpiXtract version in the change 4030to 4031support "wrong checksum" error messages emitted by acpidump utility. 4032 4033iASL: Add a * option to generate all template files (as a synonym for 4034ALL) 4035as 4036in 4037"iasl -T *" or "iasl -T ALL". 4038 4039iASL/DTC: Do not abort compiler on fatal errors. We do not want to 4040completely 4041abort the compiler on "fatal" errors, simply should abort the current 4042compile. 4043This allows multiple compiles with a single (possibly wildcard) compiler 4044invocation. 4045 4046---------------------------------------- 404716 March 2011. Summary of changes for version 20110316: 4048 40491) ACPI CA Core Subsystem: 4050 4051Fixed a problem caused by a _PRW method appearing at the namespace root 4052scope 4053during the setup of wake GPEs. A fault could occur if a _PRW directly 4054under 4055the 4056root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 4057 4058Implemented support for "spurious" Global Lock interrupts. On some 4059systems, a 4060global lock interrupt can occur without the pending flag being set. Upon 4061a 4062GL 4063interrupt, we now ensure that a thread is actually waiting for the lock 4064before 4065signaling GL availability. Rafael Wysocki, Bob Moore. 4066 4067Example Code and Data Size: These are the sizes for the OS-independent 4068acpica.lib 4069produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4070version of 4071the code includes the debug output trace mechanism and has a much larger 4072code 4073and 4074data size. 4075 4076 Previous Release (VC 9.0): 4077 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4078 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4079 Current Release (VC 9.0): 4080 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4081 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4082 40832) iASL Compiler/Disassembler and Tools: 4084 4085Implemented full support for the "SLIC" ACPI table. Includes support in 4086the 4087header files, disassembler, table compiler, and template generator. Bob 4088Moore, 4089Lin Ming. 4090 4091AcpiXtract: Correctly handle embedded comments and messages from 4092AcpiDump. 4093Apparently some or all versions of acpidump will occasionally emit a 4094comment 4095like 4096"Wrong checksum", etc., into the dump file. This was causing problems for 4097AcpiXtract. ACPICA BZ 905. 4098 4099iASL: Fix the Linux makefile by removing an inadvertent double file 4100inclusion. 4101ACPICA BZ 913. 4102 4103AcpiExec: Update installation of operation region handlers. Install one 4104handler 4105for a user-defined address space. This is used by the ASL test suite 4106(ASLTS). 4107 4108---------------------------------------- 410911 February 2011. Summary of changes for version 20110211: 4110 41111) ACPI CA Core Subsystem: 4112 4113Added a mechanism to defer _REG methods for some early-installed 4114handlers. 4115Most user handlers should be installed before call to 4116AcpiEnableSubsystem. 4117However, Event handlers and region handlers should be installed after 4118AcpiInitializeObjects. Override handlers for the "default" regions should 4119be 4120installed early, however. This change executes all _REG methods for the 4121default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 4122chicken/egg issues between them. ACPICA BZ 848. 4123 4124Implemented an optimization for GPE detection. This optimization will 4125simply 4126ignore GPE registers that contain no enabled GPEs -- there is no need to 4127read the register since this information is available internally. This 4128becomes more important on machines with a large GPE space. ACPICA 4129bugzilla 4130884. Lin Ming. Suggestion from Joe Liu. 4131 4132Removed all use of the highly unreliable FADT revision field. The 4133revision 4134number in the FADT has been found to be completely unreliable and cannot 4135be 4136trusted. Only the actual table length can be used to infer the version. 4137This 4138change updates the ACPICA core and the disassembler so that both no 4139longer 4140even look at the FADT version and instead depend solely upon the FADT 4141length. 4142 4143Fix an unresolved name issue for the no-debug and no-error-message source 4144generation cases. The _AcpiModuleName was left undefined in these cases, 4145but 4146it is actually needed as a parameter to some interfaces. Define 4147_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 4148 4149Split several large files (makefiles and project files updated) 4150 utglobal.c -> utdecode.c 4151 dbcomds.c -> dbmethod.c dbnames.c 4152 dsopcode.c -> dsargs.c dscontrol.c 4153 dsload.c -> dsload2.c 4154 aslanalyze.c -> aslbtypes.c aslwalks.c 4155 4156Example Code and Data Size: These are the sizes for the OS-independent 4157acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4158debug version of the code includes the debug output trace mechanism and 4159has 4160a much larger code and data size. 4161 4162 Previous Release (VC 9.0): 4163 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4164 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4165 Current Release (VC 9.0): 4166 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4167 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4168 41692) iASL Compiler/Disassembler and Tools: 4170 4171iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 4172These are useful C-style macros with the standard definitions. ACPICA 4173bugzilla 898. 4174 4175iASL/DTC: Added support for integer expressions and labels. Support for 4176full 4177expressions for all integer fields in all ACPI tables. Support for labels 4178in 4179"generic" portions of tables such as UEFI. See the iASL reference manual. 4180 4181Debugger: Added a command to display the status of global handlers. The 4182"handlers" command will display op region, fixed event, and miscellaneous 4183global handlers. installation status -- and for op regions, whether 4184default 4185or user-installed handler will be used. 4186 4187iASL: Warn if reserved method incorrectly returns a value. Many 4188predefined 4189names are defined such that they do not return a value. If implemented as 4190a 4191method, issue a warning if such a name explicitly returns a value. ACPICA 4192Bugzilla 855. 4193 4194iASL: Added detection of GPE method name conflicts. Detects a conflict 4195where 4196there are two GPE methods of the form _Lxy and _Exy in the same scope. 4197(For 4198example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 4199 4200iASL/DTC: Fixed a couple input scanner issues with comments and line 4201numbers. Comment remover could get confused and miss a comment ending. 4202Fixed 4203a problem with line counter maintenance. 4204 4205iASL/DTC: Reduced the severity of some errors from fatal to error. There 4206is 4207no need to abort on simple errors within a field definition. 4208 4209Debugger: Simplified the output of the help command. All help output now 4210in 4211a single screen, instead of help subcommands. ACPICA Bugzilla 897. 4212 4213---------------------------------------- 421412 January 2011. Summary of changes for version 20110112: 4215 42161) ACPI CA Core Subsystem: 4217 4218Fixed a race condition between method execution and namespace walks that 4219can 4220possibly cause a fault. The problem was apparently introduced in version 422120100528 as a result of a performance optimization that reduces the 4222number 4223of 4224namespace walks upon method exit by using the delete_namespace_subtree 4225function instead of the delete_namespace_by_owner function used 4226previously. 4227Bug is a missing namespace lock in the delete_namespace_subtree function. 4228dana.myers@oracle.com 4229 4230Fixed several issues and a possible fault with the automatic "serialized" 4231method support. History: This support changes a method to "serialized" on 4232the 4233fly if the method generates an AE_ALREADY_EXISTS error, indicating the 4234possibility that it cannot handle reentrancy. This fix repairs a couple 4235of 4236issues seen in the field, especially on machines with many cores: 4237 4238 1) Delete method children only upon the exit of the last thread, 4239 so as to not delete objects out from under other running threads 4240 (and possibly causing a fault.) 4241 2) Set the "serialized" bit for the method only upon the exit of the 4242 Last thread, so as to not cause deadlock when running threads 4243 attempt to exit. 4244 3) Cleanup the use of the AML "MethodFlags" and internal method flags 4245 so that there is no longer any confusion between the two. 4246 4247 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 4248 4249Debugger: Now lock the namespace for duration of a namespace dump. 4250Prevents 4251issues if the namespace is changing dynamically underneath the debugger. 4252Especially affects temporary namespace nodes, since the debugger displays 4253these also. 4254 4255Updated the ordering of include files. The ACPICA headers should appear 4256before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 4257set 4258any necessary compiler-specific defines, etc. Affects the ACPI-related 4259tools 4260and utilities. 4261 4262Updated all ACPICA copyrights and signons to 2011. Added the 2011 4263copyright 4264to all module headers and signons, including the Linux header. This 4265affects 4266virtually every file in the ACPICA core subsystem, iASL compiler, and all 4267utilities. 4268 4269Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 4270project files for VC++ 6.0 are now obsolete. New project files can be 4271found 4272under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 4273details. 4274 4275Example Code and Data Size: These are the sizes for the OS-independent 4276acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4277debug version of the code includes the debug output trace mechanism and 4278has a 4279much larger code and data size. 4280 4281 Previous Release (VC 6.0): 4282 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4283 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4284 Current Release (VC 9.0): 4285 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4286 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4287 42882) iASL Compiler/Disassembler and Tools: 4289 4290iASL: Added generic data types to the Data Table compiler. Add "generic" 4291data 4292types such as UINT32, String, Unicode, etc., to simplify the generation 4293of 4294platform-defined tables such as UEFI. Lin Ming. 4295 4296iASL: Added listing support for the Data Table Compiler. Adds listing 4297support 4298(-l) to display actual binary output for each line of input code. 4299 4300---------------------------------------- 430109 December 2010. Summary of changes for version 20101209: 4302 43031) ACPI CA Core Subsystem: 4304 4305Completed the major overhaul of the GPE support code that was begun in 4306July 43072010. Major features include: removal of _PRW execution in ACPICA (host 4308executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 4309changes to existing interfaces, simplification of GPE handler operation, 4310and 4311a handful of new interfaces: 4312 4313 AcpiUpdateAllGpes 4314 AcpiFinishGpe 4315 AcpiSetupGpeForWake 4316 AcpiSetGpeWakeMask 4317 One new file, evxfgpe.c to consolidate all external GPE interfaces. 4318 4319See the ACPICA Programmer Reference for full details and programming 4320information. See the new section 4.4 "General Purpose Event (GPE) 4321Support" 4322for a full overview, and section 8.7 "ACPI General Purpose Event 4323Management" 4324for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 4325Ming, 4326Bob Moore, Rafael Wysocki. 4327 4328Implemented a new GPE feature for Windows compatibility, the "Implicit 4329Wake 4330GPE Notify". This feature will automatically issue a Notify(2) on a 4331device 4332when a Wake GPE is received if there is no corresponding GPE method or 4333handler. ACPICA BZ 870. 4334 4335Fixed a problem with the Scope() operator during table parse and load 4336phase. 4337During load phase (table load or method execution), the scope operator 4338should 4339not enter the target into the namespace. Instead, it should open a new 4340scope 4341at the target location. Linux BZ 19462, ACPICA BZ 882. 4342 4343Example Code and Data Size: These are the sizes for the OS-independent 4344acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4345debug version of the code includes the debug output trace mechanism and 4346has a 4347much larger code and data size. 4348 4349 Previous Release: 4350 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4351 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4352 Current Release: 4353 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4354 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4355 43562) iASL Compiler/Disassembler and Tools: 4357 4358iASL: Relax the alphanumeric restriction on _CID strings. These strings 4359are 4360"bus-specific" per the ACPI specification, and therefore any characters 4361are 4362acceptable. The only checks that can be performed are for a null string 4363and 4364perhaps for a leading asterisk. ACPICA BZ 886. 4365 4366iASL: Fixed a problem where a syntax error that caused a premature EOF 4367condition on the source file emitted a very confusing error message. The 4368premature EOF is now detected correctly. ACPICA BZ 891. 4369 4370Disassembler: Decode the AccessSize within a Generic Address Structure 4371(byte 4372access, word access, etc.) Note, this field does not allow arbitrary bit 4373access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 4374 4375New: AcpiNames utility - Example namespace dump utility. Shows an example 4376of 4377ACPICA configuration for a minimal namespace dump utility. Uses table and 4378namespace managers, but no AML interpreter. Does not add any 4379functionality 4380over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 4381partition and configure ACPICA. ACPICA BZ 883. 4382 4383AML Debugger: Increased the debugger buffer size for method return 4384objects. 4385Was 4K, increased to 16K. Also enhanced error messages for debugger 4386method 4387execution, including the buffer overflow case. 4388 4389---------------------------------------- 439013 October 2010. Summary of changes for version 20101013: 4391 43921) ACPI CA Core Subsystem: 4393 4394Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 4395now 4396clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 4397HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 4398 4399Changed the type of the predefined namespace object _TZ from ThermalZone 4400to 4401Device. This was found to be confusing to the host software that 4402processes 4403the various thermal zones, since _TZ is not really a ThermalZone. 4404However, 4405a 4406Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 4407Zhang. 4408 4409Added Windows Vista SP2 to the list of supported _OSI strings. The actual 4410string is "Windows 2006 SP2". 4411 4412Eliminated duplicate code in AcpiUtExecute* functions. Now that the 4413nsrepair 4414code automatically repairs _HID-related strings, this type of code is no 4415longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 4416878. 4417 4418Example Code and Data Size: These are the sizes for the OS-independent 4419acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4420debug version of the code includes the debug output trace mechanism and 4421has a 4422much larger code and data size. 4423 4424 Previous Release: 4425 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4426 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4427 Current Release: 4428 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4429 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4430 44312) iASL Compiler/Disassembler and Tools: 4432 4433iASL: Implemented additional compile-time validation for _HID strings. 4434The 4435non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 4436length 4437of 4438the string must be exactly seven or eight characters. For both _HID and 4439_CID 4440strings, all characters must be alphanumeric. ACPICA BZ 874. 4441 4442iASL: Allow certain "null" resource descriptors. Some BIOS code creates 4443descriptors that are mostly or all zeros, with the expectation that they 4444will 4445be filled in at runtime. iASL now allows this as long as there is a 4446"resource 4447tag" (name) associated with the descriptor, which gives the ASL a handle 4448needed to modify the descriptor. ACPICA BZ 873. 4449 4450Added single-thread support to the generic Unix application OSL. 4451Primarily 4452for iASL support, this change removes the use of semaphores in the 4453single- 4454threaded ACPICA tools/applications - increasing performance. The 4455_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 4456option. ACPICA BZ 879. 4457 4458AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 4459support 4460for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 4461 4462iASL: Moved all compiler messages to a new file, aslmessages.h. 4463 4464---------------------------------------- 446515 September 2010. Summary of changes for version 20100915: 4466 44671) ACPI CA Core Subsystem: 4468 4469Removed the AcpiOsDerivePciId OSL interface. The various host 4470implementations 4471of this function were not OS-dependent and are now obsolete and can be 4472removed from all host OSLs. This function has been replaced by 4473AcpiHwDerivePciId, which is now part of the ACPICA core code. 4474AcpiHwDerivePciId has been implemented without recursion. Adds one new 4475module, hwpci.c. ACPICA BZ 857. 4476 4477Implemented a dynamic repair for _HID and _CID strings. The following 4478problems are now repaired at runtime: 1) Remove a leading asterisk in the 4479string, and 2) the entire string is uppercased. Both repairs are in 4480accordance with the ACPI specification and will simplify host driver 4481code. 4482ACPICA BZ 871. 4483 4484The ACPI_THREAD_ID type is no longer configurable, internally it is now 4485always UINT64. This simplifies the ACPICA code, especially any printf 4486output. 4487UINT64 is the only common data type for all thread_id types across all 4488operating systems. It is now up to the host OSL to cast the native 4489thread_id 4490type to UINT64 before returning the value to ACPICA (via 4491AcpiOsGetThreadId). 4492Lin Ming, Bob Moore. 4493 4494Added the ACPI_INLINE type to enhance the ACPICA configuration. The 4495"inline" 4496keyword is not standard across compilers, and this type allows inline to 4497be 4498configured on a per-compiler basis. Lin Ming. 4499 4500Made the system global AcpiGbl_SystemAwakeAndRunning publically 4501available. 4502Added an extern for this boolean in acpixf.h. Some hosts utilize this 4503value 4504during suspend/restore operations. ACPICA BZ 869. 4505 4506All code that implements error/warning messages with the "ACPI:" prefix 4507has 4508been moved to a new module, utxferror.c. 4509 4510The UINT64_OVERLAY was moved to utmath.c, which is the only module where 4511it 4512is used. ACPICA BZ 829. Lin Ming, Bob Moore. 4513 4514Example Code and Data Size: These are the sizes for the OS-independent 4515acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4516debug version of the code includes the debug output trace mechanism and 4517has a 4518much larger code and data size. 4519 4520 Previous Release: 4521 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4522 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4523 Current Release: 4524 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4525 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4526 45272) iASL Compiler/Disassembler and Tools: 4528 4529iASL/Disassembler: Write ACPI errors to stderr instead of the output 4530file. 4531This keeps the output files free of random error messages that may 4532originate 4533from within the namespace/interpreter code. Used this opportunity to 4534merge 4535all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 4536866. Lin Ming, Bob Moore. 4537 4538Tools: update some printfs for ansi warnings on size_t. Handle width 4539change 4540of size_t on 32-bit versus 64-bit generations. Lin Ming. 4541 4542---------------------------------------- 454306 August 2010. Summary of changes for version 20100806: 4544 45451) ACPI CA Core Subsystem: 4546 4547Designed and implemented a new host interface to the _OSI support code. 4548This 4549will allow the host to dynamically add or remove multiple _OSI strings, 4550as 4551well as install an optional handler that is called for each _OSI 4552invocation. 4553Also added a new AML debugger command, 'osi' to display and modify the 4554global 4555_OSI string table, and test support in the AcpiExec utility. See the 4556ACPICA 4557reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 4558New Functions: 4559 AcpiInstallInterface - Add an _OSI string. 4560 AcpiRemoveInterface - Delete an _OSI string. 4561 AcpiInstallInterfaceHandler - Install optional _OSI handler. 4562Obsolete Functions: 4563 AcpiOsValidateInterface - no longer used. 4564New Files: 4565 source/components/utilities/utosi.c 4566 4567Re-introduced the support to enable multi-byte transfers for Embedded 4568Controller (EC) operation regions. A reported problem was found to be a 4569bug 4570in the host OS, not in the multi-byte support. Previously, the maximum 4571data 4572size passed to the EC operation region handler was a single byte. There 4573are 4574often EC Fields larger than one byte that need to be transferred, and it 4575is 4576useful for the EC driver to lock these as a single transaction. This 4577change 4578enables single transfers larger than 8 bits. This effectively changes the 4579access to the EC space from ByteAcc to AnyAcc, and will probably require 4580changes to the host OS Embedded Controller driver to enable 16/32/64/256- 4581bit 4582transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 4583 4584Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 4585prototype in acpiosxf.h had the output value pointer as a (void *). 4586It should be a (UINT64 *). This may affect some host OSL code. 4587 4588Fixed a couple problems with the recently modified Linux makefiles for 4589iASL 4590and AcpiExec. These new makefiles place the generated object files in the 4591local directory so that there can be no collisions between the files that 4592are 4593shared between them that are compiled with different options. 4594 4595Example Code and Data Size: These are the sizes for the OS-independent 4596acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4597debug version of the code includes the debug output trace mechanism and 4598has a 4599much larger code and data size. 4600 4601 Previous Release: 4602 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4603 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4604 Current Release: 4605 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4606 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4607 46082) iASL Compiler/Disassembler and Tools: 4609 4610iASL/Disassembler: Added a new option (-da, "disassemble all") to load 4611the 4612namespace from and disassemble an entire group of AML files. Useful for 4613loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 4614and 4615disassembling with one simple command. ACPICA BZ 865. Lin Ming. 4616 4617iASL: Allow multiple invocations of -e option. This change allows 4618multiple 4619uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 4620834. 4621Lin Ming. 4622 4623---------------------------------------- 462402 July 2010. Summary of changes for version 20100702: 4625 46261) ACPI CA Core Subsystem: 4627 4628Implemented several updates to the recently added GPE reference count 4629support. The model for "wake" GPEs is changing to give the host OS 4630complete 4631control of these GPEs. Eventually, the ACPICA core will not execute any 4632_PRW 4633methods, since the host already must execute them. Also, additional 4634changes 4635were made to help ensure that the reference counts are kept in proper 4636synchronization with reality. Rafael J. Wysocki. 4637 46381) Ensure that GPEs are not enabled twice during initialization. 46392) Ensure that GPE enable masks stay in sync with the reference count. 46403) Do not inadvertently enable GPEs when writing GPE registers. 46414) Remove the internal wake reference counter and add new AcpiGpeWakeup 4642interface. This interface will set or clear individual GPEs for wakeup. 46435) Remove GpeType argument from AcpiEnable and AcpiDisable. These 4644interfaces 4645are now used for "runtime" GPEs only. 4646 4647Changed the behavior of the GPE install/remove handler interfaces. The 4648GPE 4649is 4650no longer disabled during this process, as it was found to cause problems 4651on 4652some machines. Rafael J. Wysocki. 4653 4654Reverted a change introduced in version 20100528 to enable Embedded 4655Controller multi-byte transfers. This change was found to cause problems 4656with 4657Index Fields and possibly Bank Fields. It will be reintroduced when these 4658problems have been resolved. 4659 4660Fixed a problem with references to Alias objects within Package Objects. 4661A 4662reference to an Alias within the definition of a Package was not always 4663resolved properly. Aliases to objects like Processors, Thermal zones, 4664etc. 4665were resolved to the actual object instead of a reference to the object 4666as 4667it 4668should be. Package objects are only allowed to contain integer, string, 4669buffer, package, and reference objects. Redhat bugzilla 608648. 4670 4671Example Code and Data Size: These are the sizes for the OS-independent 4672acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4673debug version of the code includes the debug output trace mechanism and 4674has a 4675much larger code and data size. 4676 4677 Previous Release: 4678 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4679 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4680 Current Release: 4681 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4682 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4683 46842) iASL Compiler/Disassembler and Tools: 4685 4686iASL: Implemented a new compiler subsystem to allow definition and 4687compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 4688These 4689are called "ACPI Data Tables", and the new compiler is the "Data Table 4690Compiler". This compiler is intended to simplify the existing error-prone 4691process of creating these tables for the BIOS, as well as allowing the 4692disassembly, modification, recompilation, and override of existing ACPI 4693data 4694tables. See the iASL User Guide for detailed information. 4695 4696iASL: Implemented a new Template Generator option in support of the new 4697Data 4698Table Compiler. This option will create examples of all known ACPI tables 4699that can be used as the basis for table development. See the iASL 4700documentation and the -T option. 4701 4702Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 4703Descriptor Table). 4704 4705Updated the Linux makefiles for iASL and AcpiExec to place the generated 4706object files in the local directory so that there can be no collisions 4707between the shared files between them that are generated with different 4708options. 4709 4710Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 4711Use 4712the #define __APPLE__ to enable this support. 4713 4714---------------------------------------- 471528 May 2010. Summary of changes for version 20100528: 4716 4717Note: The ACPI 4.0a specification was released on April 5, 2010 and is 4718available at www.acpi.info. This is primarily an errata release. 4719 47201) ACPI CA Core Subsystem: 4721 4722Undefined ACPI tables: We are looking for the definitions for the 4723following 4724ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 4725 4726Implemented support to enable multi-byte transfers for Embedded 4727Controller 4728(EC) operation regions. Previously, the maximum data size passed to the 4729EC 4730operation region handler was a single byte. There are often EC Fields 4731larger 4732than one byte that need to be transferred, and it is useful for the EC 4733driver 4734to lock these as a single transaction. This change enables single 4735transfers 4736larger than 8 bits. This effectively changes the access to the EC space 4737from 4738ByteAcc to AnyAcc, and will probably require changes to the host OS 4739Embedded 4740Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 4741bit 4742transfers. Alexey Starikovskiy, Lin Ming 4743 4744Implemented a performance enhancement for namespace search and access. 4745This 4746change enhances the performance of namespace searches and walks by adding 4747a 4748backpointer to the parent in each namespace node. On large namespaces, 4749this 4750change can improve overall ACPI performance by up to 9X. Adding a pointer 4751to 4752each namespace node increases the overall size of the internal namespace 4753by 4754about 5%, since each namespace entry usually consists of both a namespace 4755node and an ACPI operand object. However, this is the first growth of the 4756namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 4757 4758Implemented a performance optimization that reduces the number of 4759namespace 4760walks. On control method exit, only walk the namespace if the method is 4761known 4762to have created namespace objects outside of its local scope. Previously, 4763the 4764entire namespace was traversed on each control method exit. This change 4765can 4766improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 4767Moore. 4768 4769Added support to truncate I/O addresses to 16 bits for Windows 4770compatibility. 4771Some ASL code has been seen in the field that inadvertently has bits set 4772above bit 15. This feature is optional and is enabled if the BIOS 4773requests 4774any Windows OSI strings. It can also be enabled by the host OS. Matthew 4775Garrett, Bob Moore. 4776 4777Added support to limit the maximum time for the ASL Sleep() operator. To 4778prevent accidental deep sleeps, limit the maximum time that Sleep() will 4779actually sleep. Configurable, the default maximum is two seconds. ACPICA 4780bugzilla 854. 4781 4782Added run-time validation support for the _WDG and_WED Microsoft 4783predefined 4784methods. These objects are defined by "Windows Instrumentation", and are 4785not 4786part of the ACPI spec. ACPICA BZ 860. 4787 4788Expanded all statistic counters used during namespace and device 4789initialization from 16 to 32 bits in order to support very large 4790namespaces. 4791 4792Replaced all instances of %d in printf format specifiers with %u since 4793nearly 4794all integers in ACPICA are unsigned. 4795 4796Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 4797returned 4798as AE_NO_HANDLER. 4799 4800Example Code and Data Size: These are the sizes for the OS-independent 4801acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4802debug version of the code includes the debug output trace mechanism and 4803has a 4804much larger code and data size. 4805 4806 Previous Release: 4807 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4808 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4809 Current Release: 4810 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4811 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4812 48132) iASL Compiler/Disassembler and Tools: 4814 4815iASL: Added compiler support for the _WDG and_WED Microsoft predefined 4816methods. These objects are defined by "Windows Instrumentation", and are 4817not 4818part of the ACPI spec. ACPICA BZ 860. 4819 4820AcpiExec: added option to disable the memory tracking mechanism. The -dt 4821option will disable the tracking mechanism, which improves performance 4822considerably. 4823 4824AcpiExec: Restructured the command line options into -d (disable) and -e 4825(enable) options. 4826 4827---------------------------------------- 482828 April 2010. Summary of changes for version 20100428: 4829 48301) ACPI CA Core Subsystem: 4831 4832Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 4833including FADT-based and GPE Block Devices, execute any _PRW methods in 4834the 4835new table, and process any _Lxx/_Exx GPE methods in the new table. Any 4836runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 4837immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 4838Devices. Provides compatibility with other ACPI implementations. Two new 4839files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 4840Moore. 4841 4842Fixed a regression introduced in version 20100331 within the table 4843manager 4844where initial table loading could fail. This was introduced in the fix 4845for 4846AcpiReallocateRootTable. Also, renamed some of fields in the table 4847manager 4848data structures to clarify their meaning and use. 4849 4850Fixed a possible allocation overrun during internal object copy in 4851AcpiUtCopySimpleObject. The original code did not correctly handle the 4852case 4853where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 4854847. 4855 4856Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 4857possible access beyond end-of-allocation. Also, now fully validate 4858descriptor 4859(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 4860 4861Example Code and Data Size: These are the sizes for the OS-independent 4862acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4863debug version of the code includes the debug output trace mechanism and 4864has a 4865much larger code and data size. 4866 4867 Previous Release: 4868 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4869 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4870 Current Release: 4871 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4872 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4873 48742) iASL Compiler/Disassembler and Tools: 4875 4876iASL: Implemented Min/Max/Len/Gran validation for address resource 4877descriptors. This change implements validation for the address fields 4878that 4879are common to all address-type resource descriptors. These checks are 4880implemented: Checks for valid Min/Max, length within the Min/Max window, 4881valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 4882per 4883table 6-40 in the ACPI 4.0a specification. Also split the large 4884aslrestype1.c 4885and aslrestype2.c files into five new files. ACPICA BZ 840. 4886 4887iASL: Added support for the _Wxx predefined names. This support was 4888missing 4889and these names were not recognized by the compiler as valid predefined 4890names. ACPICA BZ 851. 4891 4892iASL: Added an error for all predefined names that are defined to return 4893no 4894value and thus must be implemented as Control Methods. These include all 4895of 4896the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 4897names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 4898 4899iASL: Implemented the -ts option to emit hex AML data in ASL format, as 4900an 4901ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 4902be 4903dynamically loaded via the Load() operator. Also cleaned up output for 4904the 4905- 4906ta and -tc options. ACPICA BZ 853. 4907 4908Tests: Added a new file with examples of extended iASL error checking. 4909Demonstrates the advanced error checking ability of the iASL compiler. 4910Available at tests/misc/badcode.asl. 4911 4912---------------------------------------- 491331 March 2010. Summary of changes for version 20100331: 4914 49151) ACPI CA Core Subsystem: 4916 4917Completed a major update for the GPE support in order to improve support 4918for 4919shared GPEs and to simplify both host OS and ACPICA code. Added a 4920reference 4921count mechanism to support shared GPEs that require multiple device 4922drivers. 4923Several external interfaces have changed. One external interface has been 4924removed. One new external interface was added. Most of the GPE external 4925interfaces now use the GPE spinlock instead of the events mutex (and the 4926Flags parameter for many GPE interfaces has been removed.) See the 4927updated 4928ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 4929Rafael 4930Wysocki. ACPICA BZ 831. 4931 4932Changed: 4933 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 4934Removed: 4935 AcpiSetGpeType 4936New: 4937 AcpiSetGpe 4938 4939Implemented write support for DataTable operation regions. These regions 4940are 4941defined via the DataTableRegion() operator. Previously, only read support 4942was 4943implemented. The ACPI specification allows DataTableRegions to be 4944read/write, 4945however. 4946 4947Implemented a new subsystem option to force a copy of the DSDT to local 4948memory. Optionally copy the entire DSDT to local memory (instead of 4949simply 4950mapping it.) There are some (albeit very rare) BIOSs that corrupt or 4951replace 4952the original DSDT, creating the need for this option. Default is FALSE, 4953do 4954not copy the DSDT. 4955 4956Implemented detection of a corrupted or replaced DSDT. This change adds 4957support to detect a DSDT that has been corrupted and/or replaced from 4958outside 4959the OS (by firmware). This is typically catastrophic for the system, but 4960has 4961been seen on some machines. Once this problem has been detected, the DSDT 4962copy option can be enabled via system configuration. Lin Ming, Bob Moore. 4963 4964Fixed two problems with AcpiReallocateRootTable during the root table 4965copy. 4966When copying the root table to the new allocation, the length used was 4967incorrect. The new size was used instead of the current table size, 4968meaning 4969too much data was copied. Also, the count of available slots for ACPI 4970tables 4971was not set correctly. Alexey Starikovskiy, Bob Moore. 4972 4973Example Code and Data Size: These are the sizes for the OS-independent 4974acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4975debug version of the code includes the debug output trace mechanism and 4976has a 4977much larger code and data size. 4978 4979 Previous Release: 4980 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4981 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4982 Current Release: 4983 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4984 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4985 49862) iASL Compiler/Disassembler and Tools: 4987 4988iASL: Implement limited typechecking for values returned from predefined 4989control methods. The type of any returned static (unnamed) object is now 4990validated. For example, Return(1). ACPICA BZ 786. 4991 4992iASL: Fixed a predefined name object verification regression. Fixes a 4993problem 4994introduced in version 20100304. An error is incorrectly generated if a 4995predefined name is declared as a static named object with a value defined 4996using the keywords "Zero", "One", or "Ones". Lin Ming. 4997 4998iASL: Added Windows 7 support for the -g option (get local ACPI tables) 4999by 5000reducing the requested registry access rights. ACPICA BZ 842. 5001 5002Disassembler: fixed a possible fault when generating External() 5003statements. 5004Introduced in commit ae7d6fd: Properly handle externals with parent- 5005prefix 5006(carat). Fixes a string length allocation calculation. Lin Ming. 5007 5008---------------------------------------- 500904 March 2010. Summary of changes for version 20100304: 5010 50111) ACPI CA Core Subsystem: 5012 5013Fixed a possible problem with the AML Mutex handling function 5014AcpiExReleaseMutex where the function could fault under the very rare 5015condition when the interpreter has blocked, the interpreter lock is 5016released, 5017the interpreter is then reentered via the same thread, and attempts to 5018acquire an AML mutex that was previously acquired. FreeBSD report 140979. 5019Lin 5020Ming. 5021 5022Implemented additional configuration support for the AML "Debug Object". 5023Output from the debug object can now be enabled via a global variable, 5024AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 5025debugging. 5026This debug output is now available in the release version of ACPICA 5027instead 5028of just the debug version. Also, the entire debug output module can now 5029be 5030configured out of the ACPICA build if desired. One new file added, 5031executer/exdebug.c. Lin Ming, Bob Moore. 5032 5033Added header support for the ACPI MCHI table (Management Controller Host 5034Interface Table). This table was added in ACPI 4.0, but the defining 5035document 5036has only recently become available. 5037 5038Standardized output of integer values for ACPICA warnings/errors. Always 5039use 50400x prefix for hex output, always use %u for unsigned integer decimal 5041output. 5042Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 5043400 5044invocations.) These invocations were converted from the original 5045ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 5046 5047Example Code and Data Size: These are the sizes for the OS-independent 5048acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5049debug version of the code includes the debug output trace mechanism and 5050has a 5051much larger code and data size. 5052 5053 Previous Release: 5054 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5055 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5056 Current Release: 5057 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5058 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5059 50602) iASL Compiler/Disassembler and Tools: 5061 5062iASL: Implemented typechecking support for static (non-control method) 5063predefined named objects that are declared with the Name() operator. For 5064example, the type of this object is now validated to be of type Integer: 5065Name(_BBN, 1). This change migrates the compiler to using the core 5066predefined 5067name table instead of maintaining a local version. Added a new file, 5068aslpredef.c. ACPICA BZ 832. 5069 5070Disassembler: Added support for the ACPI 4.0 MCHI table. 5071 5072---------------------------------------- 507321 January 2010. Summary of changes for version 20100121: 5074 50751) ACPI CA Core Subsystem: 5076 5077Added the 2010 copyright to all module headers and signons. This affects 5078virtually every file in the ACPICA core subsystem, the iASL compiler, the 5079tools/utilities, and the test suites. 5080 5081Implemented a change to the AcpiGetDevices interface to eliminate 5082unnecessary 5083invocations of the _STA method. In the case where a specific _HID is 5084requested, do not run _STA until a _HID match is found. This eliminates 5085potentially dozens of _STA calls during a search for a particular 5086device/HID, 5087which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 5088 5089Implemented an additional repair for predefined method return values. 5090Attempt 5091to repair unexpected NULL elements within returned Package objects. 5092Create 5093an 5094Integer of value zero, a NULL String, or a zero-length Buffer as 5095appropriate. 5096ACPICA BZ 818. Lin Ming, Bob Moore. 5097 5098Removed the obsolete ACPI_INTEGER data type. This type was introduced as 5099the 5100code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 5101(with 510264-bit AML integers). It is now obsolete and this change removes it from 5103the 5104ACPICA code base, replaced by UINT64. The original typedef has been 5105retained 5106for now for compatibility with existing device driver code. ACPICA BZ 5107824. 5108 5109Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 5110in 5111the parse tree object. 5112 5113Added additional warning options for the gcc-4 generation. Updated the 5114source 5115accordingly. This includes some code restructuring to eliminate 5116unreachable 5117code, elimination of some gotos, elimination of unused return values, 5118some 5119additional casting, and removal of redundant declarations. 5120 5121Example Code and Data Size: These are the sizes for the OS-independent 5122acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5123debug version of the code includes the debug output trace mechanism and 5124has a 5125much larger code and data size. 5126 5127 Previous Release: 5128 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5129 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5130 Current Release: 5131 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5132 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5133 51342) iASL Compiler/Disassembler and Tools: 5135 5136No functional changes for this release. 5137 5138---------------------------------------- 513914 December 2009. Summary of changes for version 20091214: 5140 51411) ACPI CA Core Subsystem: 5142 5143Enhanced automatic data type conversions for predefined name repairs. 5144This 5145change expands the automatic repairs/conversions for predefined name 5146return 5147values to make Integers, Strings, and Buffers fully interchangeable. 5148Also, 5149a 5150Buffer can be converted to a Package of Integers if necessary. The 5151nsrepair.c 5152module was completely restructured. Lin Ming, Bob Moore. 5153 5154Implemented automatic removal of null package elements during predefined 5155name 5156repairs. This change will automatically remove embedded and trailing NULL 5157package elements from returned package objects that are defined to 5158contain 5159a 5160variable number of sub-packages. The driver is then presented with a 5161package 5162with no null elements to deal with. ACPICA BZ 819. 5163 5164Implemented a repair for the predefined _FDE and _GTM names. The expected 5165return value for both names is a Buffer of 5 DWORDs. This repair fixes 5166two 5167possible problems (both seen in the field), where a package of integers 5168is 5169returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 5170Kim. 5171 5172Implemented additional module-level code support. This change will 5173properly 5174execute module-level code that is not at the root of the namespace (under 5175a 5176Device object, etc.). Now executes the code within the current scope 5177instead 5178of the root. ACPICA BZ 762. Lin Ming. 5179 5180Fixed possible mutex acquisition errors when running _REG methods. Fixes 5181a 5182problem where mutex errors can occur when running a _REG method that is 5183in 5184the same scope as a method-defined operation region or an operation 5185region 5186under a module-level IF block. This type of code is rare, so the problem 5187has 5188not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 5189 5190Fixed a possible memory leak during module-level code execution. An 5191object 5192could be leaked for each block of executed module-level code if the 5193interpreter slack mode is enabled This change deletes any implicitly 5194returned 5195object from the module-level code block. Lin Ming. 5196 5197Removed messages for successful predefined repair(s). The repair 5198mechanism 5199was considered too wordy. Now, messages are only unconditionally emitted 5200if 5201the return object cannot be repaired. Existing messages for successful 5202repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 5203827. 5204 5205Example Code and Data Size: These are the sizes for the OS-independent 5206acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5207debug version of the code includes the debug output trace mechanism and 5208has a 5209much larger code and data size. 5210 5211 Previous Release: 5212 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5213 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5214 Current Release: 5215 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5216 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5217 52182) iASL Compiler/Disassembler and Tools: 5219 5220iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 5221files 5222were no longer automatically removed at the termination of the compile. 5223 5224acpiexec: Implemented the -f option to specify default region fill value. 5225This option specifies the value used to initialize buffers that simulate 5226operation regions. Default value is zero. Useful for debugging problems 5227that 5228depend on a specific initial value for a region or field. 5229 5230---------------------------------------- 523112 November 2009. Summary of changes for version 20091112: 5232 52331) ACPI CA Core Subsystem: 5234 5235Implemented a post-order callback to AcpiWalkNamespace. The existing 5236interface only has a pre-order callback. This change adds an additional 5237parameter for a post-order callback which will be more useful for bus 5238scans. 5239ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 5240 5241Modified the behavior of the operation region memory mapping cache for 5242SystemMemory. Ensure that the memory mappings created for operation 5243regions 5244do not cross 4K page boundaries. Crossing a page boundary while mapping 5245regions can cause kernel warnings on some hosts if the pages have 5246different 5247attributes. Such regions are probably BIOS bugs, and this is the 5248workaround. 5249Linux BZ 14445. Lin Ming. 5250 5251Implemented an automatic repair for predefined methods that must return 5252sorted lists. This change will repair (by sorting) packages returned by 5253_ALR, 5254_PSS, and _TSS. Drivers can now assume that the packages are correctly 5255sorted 5256and do not contain NULL package elements. Adds one new file, 5257namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 5258 5259Fixed a possible fault during predefined name validation if a return 5260Package 5261object contains NULL elements. Also adds a warning if a NULL element is 5262followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 5263may 5264include repair or removal of all such NULL elements where possible. 5265 5266Implemented additional module-level executable AML code support. This 5267change 5268will execute module-level code that is not at the root of the namespace 5269(under a Device object, etc.) at table load time. Module-level executable 5270AML 5271code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 5272 5273Implemented a new internal function to create Integer objects. This 5274function 5275simplifies miscellaneous object creation code. ACPICA BZ 823. 5276 5277Reduced the severity of predefined repair messages, Warning to Info. 5278Since 5279the object was successfully repaired, a warning is too severe. Reduced to 5280an 5281info message for now. These messages may eventually be changed to debug- 5282only. 5283ACPICA BZ 812. 5284 5285Example Code and Data Size: These are the sizes for the OS-independent 5286acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5287debug version of the code includes the debug output trace mechanism and 5288has a 5289much larger code and data size. 5290 5291 Previous Release: 5292 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5293 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5294 Current Release: 5295 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5296 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5297 52982) iASL Compiler/Disassembler and Tools: 5299 5300iASL: Implemented Switch() with While(1) so that Break works correctly. 5301This 5302change correctly implements the Switch operator with a surrounding 5303While(1) 5304so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 5305 5306iASL: Added a message if a package initializer list is shorter than 5307package 5308length. Adds a new remark for a Package() declaration if an initializer 5309list 5310exists, but is shorter than the declared length of the package. Although 5311technically legal, this is probably a coding error and it is seen in the 5312field. ACPICA BZ 815. Lin Ming, Bob Moore. 5313 5314iASL: Fixed a problem where the compiler could fault after the maximum 5315number 5316of errors was reached (200). 5317 5318acpixtract: Fixed a possible warning for pointer cast if the compiler 5319warning 5320level set very high. 5321 5322---------------------------------------- 532313 October 2009. Summary of changes for version 20091013: 5324 53251) ACPI CA Core Subsystem: 5326 5327Fixed a problem where an Operation Region _REG method could be executed 5328more 5329than once. If a custom address space handler is installed by the host 5330before 5331the "initialize operation regions" phase of the ACPICA initialization, 5332any 5333_REG methods for that address space could be executed twice. This change 5334fixes the problem. ACPICA BZ 427. Lin Ming. 5335 5336Fixed a possible memory leak for the Scope() ASL operator. When the exact 5337invocation of "Scope(\)" is executed (change scope to root), one internal 5338operand object was leaked. Lin Ming. 5339 5340Implemented a run-time repair for the _MAT predefined method. If the _MAT 5341return value is defined as a Field object in the AML, and the field 5342size is less than or equal to the default width of an integer (32 or 534364),_MAT 5344can incorrectly return an Integer instead of a Buffer. ACPICA now 5345automatically repairs this problem. ACPICA BZ 810. 5346 5347Implemented a run-time repair for the _BIF and _BIX predefined methods. 5348The 5349"OEM Information" field is often incorrectly returned as an Integer with 5350value zero if the field is not supported by the platform. This is due to 5351an 5352ambiguity in the ACPI specification. The field should always be a string. 5353ACPICA now automatically repairs this problem by returning a NULL string 5354within the returned Package. ACPICA BZ 807. 5355 5356Example Code and Data Size: These are the sizes for the OS-independent 5357acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5358debug version of the code includes the debug output trace mechanism and 5359has a 5360much larger code and data size. 5361 5362 Previous Release: 5363 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5364 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5365 Current Release: 5366 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5367 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5368 53692) iASL Compiler/Disassembler and Tools: 5370 5371Disassembler: Fixed a problem where references to external symbols that 5372contained one or more parent-prefixes (carats) were not handled 5373correctly, 5374possibly causing a fault. ACPICA BZ 806. Lin Ming. 5375 5376Disassembler: Restructured the code so that all functions that handle 5377external symbols are in a single module. One new file is added, 5378common/dmextern.c. 5379 5380AML Debugger: Added a max count argument for the Batch command (which 5381executes multiple predefined methods within the namespace.) 5382 5383iASL: Updated the compiler documentation (User Reference.) Available at 5384http://www.acpica.org/documentation/. ACPICA BZ 750. 5385 5386AcpiXtract: Updated for Lint and other formatting changes. Close all open 5387files. 5388 5389---------------------------------------- 539003 September 2009. Summary of changes for version 20090903: 5391 53921) ACPI CA Core Subsystem: 5393 5394For Windows Vista compatibility, added the automatic execution of an _INI 5395method located at the namespace root (\_INI). This method is executed at 5396table load time. This support is in addition to the automatic execution 5397of 5398\_SB._INI. Lin Ming. 5399 5400Fixed a possible memory leak in the interpreter for AML package objects 5401if 5402the package initializer list is longer than the defined size of the 5403package. 5404This apparently can only happen if the BIOS changes the package size on 5405the 5406fly (seen in a _PSS object), as ASL compilers do not allow this. The 5407interpreter will truncate the package to the defined size (and issue an 5408error 5409message), but previously could leave the extra objects undeleted if they 5410were 5411pre-created during the argument processing (such is the case if the 5412package 5413consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 5414 5415Fixed a problem seen when a Buffer or String is stored to itself via ASL. 5416This has been reported in the field. Previously, ACPICA would zero out 5417the 5418buffer/string. Now, the operation is treated as a noop. Provides Windows 5419compatibility. ACPICA BZ 803. Lin Ming. 5420 5421Removed an extraneous error message for ASL constructs of the form 5422Store(LocalX,LocalX) when LocalX is uninitialized. These curious 5423statements 5424are seen in many BIOSs and are once again treated as NOOPs and no error 5425is 5426emitted when they are encountered. ACPICA BZ 785. 5427 5428Fixed an extraneous warning message if a _DSM reserved method returns a 5429Package object. _DSM can return any type of object, so validation on the 5430return type cannot be performed. ACPICA BZ 802. 5431 5432Example Code and Data Size: These are the sizes for the OS-independent 5433acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5434debug version of the code includes the debug output trace mechanism and 5435has a 5436much larger code and data size. 5437 5438 Previous Release: 5439 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5440 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5441 Current Release: 5442 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5443 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5444 54452) iASL Compiler/Disassembler and Tools: 5446 5447iASL: Fixed a problem with the use of the Alias operator and Resource 5448Templates. The correct alias is now constructed and no error is emitted. 5449ACPICA BZ 738. 5450 5451iASL: Implemented the -I option to specify additional search directories 5452for 5453include files. Allows multiple additional search paths for include files. 5454Directories are searched in the order specified on the command line 5455(after 5456the local directory is searched.) ACPICA BZ 800. 5457 5458iASL: Fixed a problem where the full pathname for include files was not 5459emitted for warnings/errors. This caused the IDE support to not work 5460properly. ACPICA BZ 765. 5461 5462iASL: Implemented the -@ option to specify a Windows-style response file 5463containing additional command line options. ACPICA BZ 801. 5464 5465AcpiExec: Added support to load multiple AML files simultaneously (such 5466as 5467a 5468DSDT and multiple SSDTs). Also added support for wildcards within the AML 5469pathname. These features allow all machine tables to be easily loaded and 5470debugged together. ACPICA BZ 804. 5471 5472Disassembler: Added missing support for disassembly of HEST table Error 5473Bank 5474subtables. 5475 5476---------------------------------------- 547730 July 2009. Summary of changes for version 20090730: 5478 5479The ACPI 4.0 implementation for ACPICA is complete with this release. 5480 54811) ACPI CA Core Subsystem: 5482 5483ACPI 4.0: Added header file support for all new and changed ACPI tables. 5484Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 5485new 5486for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 5487BERT, 5488EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 5489There 5490have been some ACPI 4.0 changes to other existing tables. Split the large 5491actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 5492 5493ACPI 4.0: Implemented predefined name validation for all new names. There 5494are 549531 new names in ACPI 4.0. The predefined validation module was split into 5496two 5497files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 5498 5499Implemented support for so-called "module-level executable code". This is 5500executable AML code that exists outside of any control method and is 5501intended 5502to be executed at table load time. Although illegal since ACPI 2.0, this 5503type 5504of code still exists and is apparently still being created. Blocks of 5505this 5506code are now detected and executed as intended. Currently, the code 5507blocks 5508must exist under either an If, Else, or While construct; these are the 5509typical cases seen in the field. ACPICA BZ 762. Lin Ming. 5510 5511Implemented an automatic dynamic repair for predefined names that return 5512nested Package objects. This applies to predefined names that are defined 5513to 5514return a variable-length Package of sub-packages. If the number of sub- 5515packages is one, BIOS code is occasionally seen that creates a simple 5516single 5517package with no sub-packages. This code attempts to fix the problem by 5518wrapping a new package object around the existing package. These methods 5519can 5520be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 5521BZ 5522790. 5523 5524Fixed a regression introduced in 20090625 for the AcpiGetDevices 5525interface. 5526The _HID/_CID matching was broken and no longer matched IDs correctly. 5527ACPICA 5528BZ 793. 5529 5530Fixed a problem with AcpiReset where the reset would silently fail if the 5531register was one of the protected I/O ports. AcpiReset now bypasses the 5532port 5533validation mechanism. This may eventually be driven into the 5534AcpiRead/Write 5535interfaces. 5536 5537Fixed a regression related to the recent update of the AcpiRead/Write 5538interfaces. A sleep/suspend could fail if the optional PM2 Control 5539register 5540does not exist during an attempt to write the Bus Master Arbitration bit. 5541(However, some hosts already delete the code that writes this bit, and 5542the 5543code may in fact be obsolete at this date.) ACPICA BZ 799. 5544 5545Fixed a problem where AcpiTerminate could fault if inadvertently called 5546twice 5547in succession. ACPICA BZ 795. 5548 5549Example Code and Data Size: These are the sizes for the OS-independent 5550acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5551debug version of the code includes the debug output trace mechanism and 5552has a 5553much larger code and data size. 5554 5555 Previous Release: 5556 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5557 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5558 Current Release: 5559 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5560 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5561 55622) iASL Compiler/Disassembler and Tools: 5563 5564ACPI 4.0: Implemented disassembler support for all new ACPI tables and 5565changes to existing tables. ACPICA BZ 775. 5566 5567---------------------------------------- 556825 June 2009. Summary of changes for version 20090625: 5569 5570The ACPI 4.0 Specification was released on June 16 and is available at 5571www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 5572continue for the next few releases. 5573 55741) ACPI CA Core Subsystem: 5575 5576ACPI 4.0: Implemented interpreter support for the IPMI operation region 5577address space. Includes support for bi-directional data buffers and an 5578IPMI 5579address space handler (to be installed by an IPMI device driver.) ACPICA 5580BZ 5581773. Lin Ming. 5582 5583ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 5584Includes 5585support in both the header files and the disassembler. 5586 5587Completed a major update for the AcpiGetObjectInfo external interface. 5588Changes include: 5589 - Support for variable, unlimited length HID, UID, and CID strings. 5590 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 5591etc.) 5592 - Call the _SxW power methods on behalf of a device object. 5593 - Determine if a device is a PCI root bridge. 5594 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 5595These changes will require an update to all callers of this interface. 5596See 5597the updated ACPICA Programmer Reference for details. One new source file 5598has 5599been added - utilities/utids.c. ACPICA BZ 368, 780. 5600 5601Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 5602transfers. The Value parameter has been extended from 32 bits to 64 bits 5603in 5604order to support new ACPI 4.0 tables. These changes will require an 5605update 5606to 5607all callers of these interfaces. See the ACPICA Programmer Reference for 5608details. ACPICA BZ 768. 5609 5610Fixed several problems with AcpiAttachData. The handler was not invoked 5611when 5612the host node was deleted. The data sub-object was not automatically 5613deleted 5614when the host node was deleted. The interface to the handler had an 5615unused 5616parameter, this was removed. ACPICA BZ 778. 5617 5618Enhanced the function that dumps ACPI table headers. All non-printable 5619characters in the string fields are now replaced with '?' (Signature, 5620OemId, 5621OemTableId, and CompilerId.) ACPI tables with non-printable characters in 5622these fields are occasionally seen in the field. ACPICA BZ 788. 5623 5624Fixed a problem with predefined method repair code where the code that 5625attempts to repair/convert an object of incorrect type is only executed 5626on 5627the first time the predefined method is called. The mechanism that 5628disables 5629warnings on subsequent calls was interfering with the repair mechanism. 5630ACPICA BZ 781. 5631 5632Fixed a possible memory leak in the predefined validation/repair code 5633when 5634a 5635buffer is automatically converted to an expected string object. 5636 5637Removed obsolete 16-bit files from the distribution and from the current 5638git 5639tree head. ACPICA BZ 776. 5640 5641Example Code and Data Size: These are the sizes for the OS-independent 5642acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5643debug version of the code includes the debug output trace mechanism and 5644has a 5645much larger code and data size. 5646 5647 Previous Release: 5648 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5649 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5650 Current Release: 5651 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5652 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5653 56542) iASL Compiler/Disassembler and Tools: 5655 5656ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 5657operation region keyword. ACPICA BZ 771, 772. Lin Ming. 5658 5659ACPI 4.0: iASL - implemented compile-time validation support for all new 5660predefined names and control methods (31 total). ACPICA BZ 769. 5661 5662---------------------------------------- 566321 May 2009. Summary of changes for version 20090521: 5664 56651) ACPI CA Core Subsystem: 5666 5667Disabled the preservation of the SCI enable bit in the PM1 control 5668register. 5669The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 5670to 5671be 5672a "preserved" bit - "OSPM always preserves this bit position", section 56734.7.3.2.1. However, some machines fail if this bit is in fact preserved 5674because the bit needs to be explicitly set by the OS as a workaround. No 5675machines fail if the bit is not preserved. Therefore, ACPICA no longer 5676attempts to preserve this bit. 5677 5678Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 5679incorrectly formed _PRT package could cause a fault. Added validation to 5680ensure that each package element is actually a sub-package. 5681 5682Implemented a new interface to install or override a single control 5683method, 5684AcpiInstallMethod. This interface is useful when debugging in order to 5685repair 5686an existing method or to install a missing method without having to 5687override 5688the entire ACPI table. See the ACPICA Programmer Reference for use and 5689examples. Lin Ming, Bob Moore. 5690 5691Fixed several reference count issues with the DdbHandle object that is 5692created from a Load or LoadTable operator. Prevent premature deletion of 5693the 5694object. Also, mark the object as invalid once the table has been 5695unloaded. 5696This is needed because the handle itself may not be deleted after the 5697table 5698unload, depending on whether it has been stored in a named object by the 5699caller. Lin Ming. 5700 5701Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 5702mutexes of the same sync level are acquired but then not released in 5703strict 5704opposite order, the internally maintained Current Sync Level becomes 5705confused 5706and can cause subsequent execution errors. ACPICA BZ 471. 5707 5708Changed the allowable release order for ASL mutex objects. The ACPI 4.0 5709specification has been changed to make the SyncLevel for mutex objects 5710more 5711useful. When releasing a mutex, the SyncLevel of the mutex must now be 5712the 5713same as the current sync level. This makes more sense than the previous 5714rule 5715(SyncLevel less than or equal). This change updates the code to match the 5716specification. 5717 5718Fixed a problem with the local version of the AcpiOsPurgeCache function. 5719The 5720(local) cache must be locked during all cache object deletions. Andrew 5721Baumann. 5722 5723Updated the Load operator to use operation region interfaces. This 5724replaces 5725direct memory mapping with region access calls. Now, all region accesses 5726go 5727through the installed region handler as they should. 5728 5729Simplified and optimized the NsGetNextNode function. Reduced parameter 5730count 5731and reduced code for this frequently used function. 5732 5733Example Code and Data Size: These are the sizes for the OS-independent 5734acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5735debug version of the code includes the debug output trace mechanism and 5736has a 5737much larger code and data size. 5738 5739 Previous Release: 5740 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5741 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5742 Current Release: 5743 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5744 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5745 57462) iASL Compiler/Disassembler and Tools: 5747 5748Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 5749problems 5750with sub-table disassembly and handling invalid sub-tables. Attempt 5751recovery 5752after an invalid sub-table ID. 5753 5754---------------------------------------- 575522 April 2009. Summary of changes for version 20090422: 5756 57571) ACPI CA Core Subsystem: 5758 5759Fixed a compatibility issue with the recently released I/O port 5760protection 5761mechanism. For windows compatibility, 1) On a port protection violation, 5762simply ignore the request and do not return an exception (allow the 5763control 5764method to continue execution.) 2) If only part of the request overlaps a 5765protected port, read/write the individual ports that are not protected. 5766Linux 5767BZ 13036. Lin Ming 5768 5769Enhanced the execution of the ASL/AML BreakPoint operator so that it 5770actually 5771breaks into the AML debugger if the debugger is present. This matches the 5772ACPI-defined behavior. 5773 5774Fixed several possible warnings related to the use of the configurable 5775ACPI_THREAD_ID. This type can now be configured as either an integer or a 5776pointer with no warnings. Also fixes several warnings in printf-like 5777statements for the 64-bit build when the type is configured as a pointer. 5778ACPICA BZ 766, 767. 5779 5780Fixed a number of possible warnings when compiling with gcc 4+ (depending 5781on 5782warning options.) Examples include printf formats, aliasing, unused 5783globals, 5784missing prototypes, missing switch default statements, use of non-ANSI 5785library functions, use of non-ANSI constructs. See generate/unix/Makefile 5786for 5787a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 5788 5789Example Code and Data Size: These are the sizes for the OS-independent 5790acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5791debug version of the code includes the debug output trace mechanism and 5792has a 5793much larger code and data size. 5794 5795 Previous Release: 5796 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5797 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5798 Current Release: 5799 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5800 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5801 58022) iASL Compiler/Disassembler and Tools: 5803 5804iASL: Fixed a generation warning from Bison 2.3 and fixed several 5805warnings 5806on 5807the 64-bit build. 5808 5809iASL: Fixed a problem where the Unix/Linux versions of the compiler could 5810not 5811correctly digest Windows/DOS formatted files (with CR/LF). 5812 5813iASL: Added a new option for "quiet mode" (-va) that produces only the 5814compilation summary, not individual errors and warnings. Useful for large 5815batch compilations. 5816 5817AcpiExec: Implemented a new option (-z) to enable a forced 5818semaphore/mutex 5819timeout that can be used to detect hang conditions during execution of 5820AML 5821code (includes both internal semaphores and AML-defined mutexes and 5822events.) 5823 5824Added new makefiles for the generation of acpica in a generic unix-like 5825environment. These makefiles are intended to generate the acpica tools 5826and 5827utilities from the original acpica git source tree structure. 5828 5829Test Suites: Updated and cleaned up the documentation files. Updated the 5830copyrights to 2009, affecting all source files. Use the new version of 5831iASL 5832with quiet mode. Increased the number of available semaphores in the 5833Windows 5834OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 5835added 5836an alternate implementation of the semaphore timeout to allow aslts to 5837execute fully on Cygwin. 5838 5839---------------------------------------- 584020 March 2009. Summary of changes for version 20090320: 5841 58421) ACPI CA Core Subsystem: 5843 5844Fixed a possible race condition between AcpiWalkNamespace and dynamic 5845table 5846unloads. Added a reader/writer locking mechanism to allow multiple 5847concurrent 5848namespace walks (readers), but block a dynamic table unload until it can 5849gain 5850exclusive write access to the namespace. This fixes a problem where a 5851table 5852unload could (possibly catastrophically) delete the portion of the 5853namespace 5854that is currently being examined by a walk. Adds a new file, utlock.c, 5855that 5856implements the reader/writer lock mechanism. ACPICA BZ 749. 5857 5858Fixed a regression introduced in version 20090220 where a change to the 5859FADT 5860handling could cause the ACPICA subsystem to access non-existent I/O 5861ports. 5862 5863Modified the handling of FADT register and table (FACS/DSDT) addresses. 5864The 5865FADT can contain both 32-bit and 64-bit versions of these addresses. 5866Previously, the 64-bit versions were favored, meaning that if both 32 and 586764 5868versions were valid, but not equal, the 64-bit version was used. This was 5869found to cause some machines to fail. Now, in this case, the 32-bit 5870version 5871is used instead. This now matches the Windows behavior. 5872 5873Implemented a new mechanism to protect certain I/O ports. Provides 5874Microsoft 5875compatibility and protects the standard PC I/O ports from access via AML 5876code. Adds a new file, hwvalid.c 5877 5878Fixed a possible extraneous warning message from the FADT support. The 5879message warns of a 32/64 length mismatch between the legacy and GAS 5880definitions for a register. 5881 5882Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 5883is 5884made obsolete by the port protection mechanism above. It was previously 5885used 5886to validate the entire address range of an operation region, which could 5887be 5888incorrect if the range included illegal ports, but fields within the 5889operation region did not actually access those ports. Validation is now 5890performed on a per-field basis instead of the entire region. 5891 5892Modified the handling of the PM1 Status Register ignored bit (bit 11.) 5893Ignored bits must be "preserved" according to the ACPI spec. Usually, 5894this 5895means a read/modify/write when writing to the register. However, for 5896status 5897registers, writing a one means clear the event. Writing a zero means 5898preserve 5899the event (do not clear.) This behavior is clarified in the ACPI 4.0 5900spec, 5901and the ACPICA code now simply always writes a zero to the ignored bit. 5902 5903Modified the handling of ignored bits for the PM1 A/B Control Registers. 5904As 5905per the ACPI specification, for the control registers, preserve 5906(read/modify/write) all bits that are defined as either reserved or 5907ignored. 5908 5909Updated the handling of write-only bits in the PM1 A/B Control Registers. 5910When reading the register, zero the write-only bits as per the ACPI spec. 5911ACPICA BZ 443. Lin Ming. 5912 5913Removed "Linux" from the list of supported _OSI strings. Linux no longer 5914wants to reply true to this request. The Windows strings are the only 5915paths 5916through the AML that are tested and known to work properly. 5917 5918 Previous Release: 5919 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5920 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5921 Current Release: 5922 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5923 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5924 59252) iASL Compiler/Disassembler and Tools: 5926 5927Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 5928and 5929aetables.c 5930 5931---------------------------------------- 593220 February 2009. Summary of changes for version 20090220: 5933 59341) ACPI CA Core Subsystem: 5935 5936Optimized the ACPI register locking. Removed locking for reads from the 5937ACPI 5938bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 5939is 5940not required when reading the single-bit registers. The 5941AcpiGetRegisterUnlocked function is no longer needed and has been 5942removed. 5943This will improve performance for reads on these registers. ACPICA BZ 5944760. 5945 5946Fixed the parameter validation for AcpiRead/Write. Now return 5947AE_BAD_PARAMETER if the input register pointer is null, and 5948AE_BAD_ADDRESS 5949if 5950the register has an address of zero. Previously, these cases simply 5951returned 5952AE_OK. For optional registers such as PM1B status/enable/control, the 5953caller 5954should check for a valid register address before calling. ACPICA BZ 748. 5955 5956Renamed the external ACPI bit register access functions. Renamed 5957AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 5958functions. The new names are AcpiReadBitRegister and 5959AcpiWriteBitRegister. 5960Also, restructured the code for these functions by simplifying the code 5961path 5962and condensing duplicate code to reduce code size. 5963 5964Added new functions to transparently handle the possibly split PM1 A/B 5965registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 5966functions 5967now handle the split registers for PM1 Status, Enable, and Control. 5968ACPICA 5969BZ 5970746. 5971 5972Added a function to handle the PM1 control registers, 5973AcpiHwWritePm1Control. 5974This function writes both of the PM1 control registers (A/B). These 5975registers 5976are different than the PM1 A/B status and enable registers in that 5977different 5978values can be written to the A/B registers. Most notably, the SLP_TYP 5979bits 5980can be different, as per the values returned from the _Sx predefined 5981methods. 5982 5983Removed an extra register write within AcpiHwClearAcpiStatus. This 5984function 5985was writing an optional PM1B status register twice. The existing call to 5986the 5987low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 5988A/B 5989register. ACPICA BZ 751. 5990 5991Split out the PM1 Status registers from the FADT. Added new globals for 5992these 5993registers (A/B), similar to the way the PM1 Enable registers are handled. 5994Instead of overloading the FADT Event Register blocks. This makes the 5995code 5996clearer and less prone to error. 5997 5998Fixed the warning message for when the platform contains too many ACPI 5999tables 6000for the default size of the global root table data structure. The 6001calculation 6002for the truncation value was incorrect. 6003 6004Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 6005obsolete macro, since it is now a simple reference to ->common.type. 6006There 6007were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 6008 6009Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 6010TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 6011simply SLEEP_TYPE. ACPICA BZ 754. 6012 6013Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 6014function is only needed on 64-bit host operating systems and is thus not 6015included for 32-bit hosts. 6016 6017Debug output: print the input and result for invocations of the _OSI 6018reserved 6019control method via the ACPI_LV_INFO debug level. Also, reduced some of 6020the 6021verbosity of this debug level. Len Brown. 6022 6023Example Code and Data Size: These are the sizes for the OS-independent 6024acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6025debug version of the code includes the debug output trace mechanism and 6026has a 6027much larger code and data size. 6028 6029 Previous Release: 6030 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6031 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6032 Current Release: 6033 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6034 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6035 60362) iASL Compiler/Disassembler and Tools: 6037 6038Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 6039various legal performance profiles. 6040 6041---------------------------------------- 604223 January 2009. Summary of changes for version 20090123: 6043 60441) ACPI CA Core Subsystem: 6045 6046Added the 2009 copyright to all module headers and signons. This affects 6047virtually every file in the ACPICA core subsystem, the iASL compiler, and 6048the tools/utilities. 6049 6050Implemented a change to allow the host to override any ACPI table, 6051including 6052dynamically loaded tables. Previously, only the DSDT could be replaced by 6053the 6054host. With this change, the AcpiOsTableOverride interface is called for 6055each 6056table found in the RSDT/XSDT during ACPICA initialization, and also 6057whenever 6058a table is dynamically loaded via the AML Load operator. 6059 6060Updated FADT flag definitions, especially the Boot Architecture flags. 6061 6062Debugger: For the Find command, automatically pad the input ACPI name 6063with 6064underscores if the name is shorter than 4 characters. This enables a 6065match 6066with the actual namespace entry which is itself padded with underscores. 6067 6068Example Code and Data Size: These are the sizes for the OS-independent 6069acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6070debug version of the code includes the debug output trace mechanism and 6071has a 6072much larger code and data size. 6073 6074 Previous Release: 6075 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6076 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6077 Current Release: 6078 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6079 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6080 60812) iASL Compiler/Disassembler and Tools: 6082 6083Fix build error under Bison-2.4. 6084 6085Dissasembler: Enhanced FADT support. Added decoding of the Boot 6086Architecture 6087flags. Now decode all flags, regardless of the FADT version. Flag output 6088includes the FADT version which first defined each flag. 6089 6090The iASL -g option now dumps the RSDT to a file (in addition to the FADT 6091and 6092DSDT). Windows only. 6093 6094---------------------------------------- 609504 December 2008. Summary of changes for version 20081204: 6096 60971) ACPI CA Core Subsystem: 6098 6099The ACPICA Programmer Reference has been completely updated and revamped 6100for 6101this release. This includes updates to the external interfaces, OSL 6102interfaces, the overview sections, and the debugger reference. 6103 6104Several new ACPICA interfaces have been implemented and documented in the 6105programmer reference: 6106AcpiReset - Writes the reset value to the FADT-defined reset register. 6107AcpiDisableAllGpes - Disable all available GPEs. 6108AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 6109AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 6110AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 6111AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 6112AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 6113 6114Most of the public ACPI hardware-related interfaces have been moved to a 6115new 6116file, components/hardware/hwxface.c 6117 6118Enhanced the FADT parsing and low-level ACPI register access: The ACPI 6119register lengths within the FADT are now used, and the low level ACPI 6120register access no longer hardcodes the ACPI register lengths. Given that 6121there may be some risk in actually trusting the FADT register lengths, a 6122run- 6123time option was added to fall back to the default hardcoded lengths if 6124the 6125FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 6126option is set to true for now, and a warning is issued if a suspicious 6127FADT 6128register length is overridden with the default value. 6129 6130Fixed a reference count issue in NsRepairObject. This problem was 6131introduced 6132in version 20081031 as part of a fix to repair Buffer objects within 6133Packages. Lin Ming. 6134 6135Added semaphore support to the Linux/Unix application OS-services layer 6136(OSL). ACPICA BZ 448. Lin Ming. 6137 6138Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 6139will 6140be implemented in the OSL, or will binary semaphores be used instead. 6141 6142Example Code and Data Size: These are the sizes for the OS-independent 6143acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6144debug version of the code includes the debug output trace mechanism and 6145has a 6146much larger code and data size. 6147 6148 Previous Release: 6149 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6150 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6151 Current Release: 6152 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6153 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6154 61552) iASL Compiler/Disassembler and Tools: 6156 6157iASL: Completed the '-e' option to include additional ACPI tables in 6158order 6159to 6160aid with disassembly and External statement generation. ACPICA BZ 742. 6161Lin 6162Ming. 6163 6164iASL: Removed the "named object in while loop" error. The compiler cannot 6165determine how many times a loop will execute. ACPICA BZ 730. 6166 6167Disassembler: Implemented support for FADT revision 2 (MS extension). 6168ACPICA 6169BZ 743. 6170 6171Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 6172MCFG). 6173 6174---------------------------------------- 617531 October 2008. Summary of changes for version 20081031: 6176 61771) ACPI CA Core Subsystem: 6178 6179Restructured the ACPICA header files into public/private. acpi.h now 6180includes 6181only the "public" acpica headers. All other acpica headers are "private" 6182and 6183should not be included by acpica users. One new file, accommon.h is used 6184to 6185include the commonly used private headers for acpica code generation. 6186Future 6187plans include moving all private headers to a new subdirectory. 6188 6189Implemented an automatic Buffer->String return value conversion for 6190predefined ACPI methods. For these methods (such as _BIF), added 6191automatic 6192conversion for return objects that are required to be a String, but a 6193Buffer 6194was found instead. This can happen when reading string battery data from 6195an 6196operation region, because it used to be difficult to convert the data 6197from 6198buffer to string from within the ASL. Ensures that the host OS is 6199provided 6200with a valid null-terminated string. Linux BZ 11822. 6201 6202Updated the FACS waking vector interfaces. Split 6203AcpiSetFirmwareWakingVector 6204into two: one for the 32-bit vector, another for the 64-bit vector. This 6205is 6206required because the host OS must setup the wake much differently for 6207each 6208vector (real vs. protected mode, etc.) and the interface itself should 6209not 6210be 6211deciding which vector to use. Also, eliminated the 6212GetFirmwareWakingVector 6213interface, as it served no purpose (only the firmware reads the vector, 6214OS 6215only writes the vector.) ACPICA BZ 731. 6216 6217Implemented a mechanism to escape infinite AML While() loops. Added a 6218loop 6219counter to force exit from AML While loops if the count becomes too 6220large. 6221This can occur in poorly written AML when the hardware does not respond 6222within a while loop and the loop does not implement a timeout. The 6223maximum 6224loop count is configurable. A new exception code is returned when a loop 6225is 6226broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 6227 6228Optimized the execution of AML While loops. Previously, a control state 6229object was allocated and freed for each execution of the loop. The 6230optimization is to simply reuse the control state for each iteration. 6231This 6232speeds up the raw loop execution time by about 5%. 6233 6234Enhanced the implicit return mechanism. For Windows compatibility, return 6235an 6236implicit integer of value zero for methods that contain no executable 6237code. 6238Such methods are seen in the field as stubs (presumably), and can cause 6239drivers to fail if they expect a return value. Lin Ming. 6240 6241Allow multiple backslashes as root prefixes in namepaths. In a fully 6242qualified namepath, allow multiple backslash prefixes. This can happen 6243(and 6244is seen in the field) because of the use of a double-backslash in strings 6245(since backslash is the escape character) causing confusion. ACPICA BZ 6246739 6247Lin Ming. 6248 6249Emit a warning if two different FACS or DSDT tables are discovered in the 6250FADT. Checks if there are two valid but different addresses for the FACS 6251and 6252DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 6253 6254Consolidated the method argument count validation code. Merged the code 6255that 6256validates control method argument counts into the predefined validation 6257module. Eliminates possible multiple warnings for incorrect argument 6258counts. 6259 6260Implemented ACPICA example code. Includes code for ACPICA initialization, 6261handler installation, and calling a control method. Available at 6262source/tools/examples. 6263 6264Added a global pointer for FACS table to simplify internal FACS access. 6265Use 6266the global pointer instead of using AcpiGetTableByIndex for each FACS 6267access. 6268This simplifies the code for the Global Lock and the Firmware Waking 6269Vector(s). 6270 6271Example Code and Data Size: These are the sizes for the OS-independent 6272acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6273debug version of the code includes the debug output trace mechanism and 6274has a 6275much larger code and data size. 6276 6277 Previous Release: 6278 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6279 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6280 Current Release: 6281 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6282 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6283 62842) iASL Compiler/Disassembler and Tools: 6285 6286iASL: Improved disassembly of external method calls. Added the -e option 6287to 6288allow the inclusion of additional ACPI tables to help with the 6289disassembly 6290of 6291method invocations and the generation of external declarations during the 6292disassembly. Certain external method invocations cannot be disassembled 6293properly without the actual declaration of the method. Use the -e option 6294to 6295include the table where the external method(s) are actually declared. 6296Most 6297useful for disassembling SSDTs that make method calls back to the master 6298DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 6299-d 6300-e dsdt.aml ssdt1.aml 6301 6302iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 6303problem where the use of an alias within a namepath would result in a not 6304found error or cause the compiler to fault. Also now allows forward 6305references from the Alias operator itself. ACPICA BZ 738. 6306 6307---------------------------------------- 630826 September 2008. Summary of changes for version 20080926: 6309 63101) ACPI CA Core Subsystem: 6311 6312Designed and implemented a mechanism to validate predefined ACPI methods 6313and 6314objects. This code validates the predefined ACPI objects (objects whose 6315names 6316start with underscore) that appear in the namespace, at the time they are 6317evaluated. The argument count and the type of the returned object are 6318validated against the ACPI specification. The purpose of this validation 6319is 6320to detect problems with the BIOS-implemented predefined ACPI objects 6321before 6322the results are returned to the ACPI-related drivers. Future enhancements 6323may 6324include actual repair of incorrect return objects where possible. Two new 6325files are nspredef.c and acpredef.h. 6326 6327Fixed a fault in the AML parser if a memory allocation fails during the 6328Op 6329completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 6330 6331Fixed an issue with implicit return compatibility. This change improves 6332the 6333implicit return mechanism to be more compatible with the MS interpreter. 6334Lin 6335Ming, ACPICA BZ 349. 6336 6337Implemented support for zero-length buffer-to-string conversions. Allow 6338zero 6339length strings during interpreter buffer-to-string conversions. For 6340example, 6341during the ToDecimalString and ToHexString operators, as well as implicit 6342conversions. Fiodor Suietov, ACPICA BZ 585. 6343 6344Fixed two possible memory leaks in the error exit paths of 6345AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 6346are 6347similar in that they use a stack of state objects in order to eliminate 6348recursion. The stack must be fully unwound and deallocated if an error 6349occurs. Lin Ming. ACPICA BZ 383. 6350 6351Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 6352global 6353ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 6354Moore ACPICA BZ 442. 6355 6356Removed the obsolete version number in module headers. Removed the 6357"$Revision" number that appeared in each module header. This version 6358number 6359was useful under SourceSafe and CVS, but has no meaning under git. It is 6360not 6361only incorrect, it could also be misleading. 6362 6363Example Code and Data Size: These are the sizes for the OS-independent 6364acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6365debug version of the code includes the debug output trace mechanism and 6366has a 6367much larger code and data size. 6368 6369 Previous Release: 6370 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6371 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6372 Current Release: 6373 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6374 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6375 6376---------------------------------------- 637729 August 2008. Summary of changes for version 20080829: 6378 63791) ACPI CA Core Subsystem: 6380 6381Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 6382Reference. Changes include the elimination of cheating on the Object 6383field 6384for the DdbHandle subtype, addition of a reference class field to 6385differentiate the various reference types (instead of an AML opcode), and 6386the 6387cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 6388 6389Reduce an error to a warning for an incorrect method argument count. 6390Previously aborted with an error if too few arguments were passed to a 6391control method via the external ACPICA interface. Now issue a warning 6392instead 6393and continue. Handles the case where the method inadvertently declares 6394too 6395many arguments, but does not actually use the extra ones. Applies mainly 6396to 6397the predefined methods. Lin Ming. Linux BZ 11032. 6398 6399Disallow the evaluation of named object types with no intrinsic value. 6400Return 6401AE_TYPE for objects that have no value and therefore evaluation is 6402undefined: 6403Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 6404of 6405these types were allowed, but an exception would be generated at some 6406point 6407during the evaluation. Now, the error is generated up front. 6408 6409Fixed a possible memory leak in the AcpiNsGetExternalPathname function 6410(nsnames.c). Fixes a leak in the error exit path. 6411 6412Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 6413debug 6414levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 6415ACPI_EXCEPTION 6416interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 6417ACPI_LV_EVENTS. 6418 6419Removed obsolete and/or unused exception codes from the acexcep.h header. 6420There is the possibility that certain device drivers may be affected if 6421they 6422use any of these exceptions. 6423 6424The ACPICA documentation has been added to the public git source tree, 6425under 6426acpica/documents. Included are the ACPICA programmer reference, the iASL 6427compiler reference, and the changes.txt release logfile. 6428 6429Example Code and Data Size: These are the sizes for the OS-independent 6430acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6431debug version of the code includes the debug output trace mechanism and 6432has a 6433much larger code and data size. 6434 6435 Previous Release: 6436 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6437 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6438 Current Release: 6439 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6440 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6441 64422) iASL Compiler/Disassembler and Tools: 6443 6444Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 6445defines _SCP with 3 arguments. Previous versions defined it with only 1 6446argument. iASL now allows both definitions. 6447 6448iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 6449zero- 6450length subtables when disassembling ACPI tables. Also fixed a couple of 6451errors where a full 16-bit table type field was not extracted from the 6452input 6453properly. 6454 6455acpisrc: Improve comment counting mechanism for generating source code 6456statistics. Count first and last lines of multi-line comments as 6457whitespace, 6458not comment lines. Handle Linux legal header in addition to standard 6459acpica 6460header. 6461 6462---------------------------------------- 6463 646429 July 2008. Summary of changes for version 20080729: 6465 64661) ACPI CA Core Subsystem: 6467 6468Fix a possible deadlock in the GPE dispatch. Remove call to 6469AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 6470attempt 6471to acquire the GPE lock but can deadlock since the GPE lock is already 6472held 6473at dispatch time. This code was introduced in version 20060831 as a 6474response 6475to Linux BZ 6881 and has since been removed from Linux. 6476 6477Add a function to dereference returned reference objects. Examines the 6478return 6479object from a call to AcpiEvaluateObject. Any Index or RefOf references 6480are 6481automatically dereferenced in an attempt to return something useful 6482(these 6483reference types cannot be converted into an external ACPI_OBJECT.) 6484Provides 6485MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 6486 6487x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 6488subtables for the MADT and one new subtable for the SRAT. Includes 6489disassembler and AcpiSrc support. Data from the Intel 64 Architecture 6490x2APIC 6491Specification, June 2008. 6492 6493Additional error checking for pathname utilities. Add error check after 6494all 6495calls to AcpiNsGetPathnameLength. Add status return from 6496AcpiNsBuildExternalPath and check after all calls. Add parameter 6497validation 6498to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 6499 6500Return status from the global init function AcpiUtGlobalInitialize. This 6501is 6502used by both the kernel subsystem and the utilities such as iASL 6503compiler. 6504The function could possibly fail when the caches are initialized. Yang 6505Yi. 6506 6507Add a function to decode reference object types to strings. Created for 6508improved error messages. 6509 6510Improve object conversion error messages. Better error messages during 6511object 6512conversion from internal to the external ACPI_OBJECT. Used for external 6513calls 6514to AcpiEvaluateObject. 6515 6516Example Code and Data Size: These are the sizes for the OS-independent 6517acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6518debug version of the code includes the debug output trace mechanism and 6519has a 6520much larger code and data size. 6521 6522 Previous Release: 6523 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6524 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6525 Current Release: 6526 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6527 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6528 65292) iASL Compiler/Disassembler and Tools: 6530 6531Debugger: fix a possible hang when evaluating non-methods. Fixes a 6532problem 6533introduced in version 20080701. If the object being evaluated (via 6534execute 6535command) is not a method, the debugger can hang while trying to obtain 6536non- 6537existent parameters. 6538 6539iASL: relax error for using reserved "_T_x" identifiers. These names can 6540appear in a disassembled ASL file if they were emitted by the original 6541compiler. Instead of issuing an error or warning and forcing the user to 6542manually change these names, issue a remark instead. 6543 6544iASL: error if named object created in while loop. Emit an error if any 6545named 6546object is created within a While loop. If allowed, this code will 6547generate 6548a 6549run-time error on the second iteration of the loop when an attempt is 6550made 6551to 6552create the same named object twice. ACPICA bugzilla 730. 6553 6554iASL: Support absolute pathnames for include files. Add support for 6555absolute 6556pathnames within the Include operator. previously, only relative 6557pathnames 6558were supported. 6559 6560iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 6561Descriptor. 6562The ACPI spec requires one interrupt minimum. BZ 423 6563 6564iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 6565Handles the case for the Interrupt Resource Descriptor where 6566the ResourceSource argument is omitted but ResourceSourceIndex 6567is present. Now leave room for the Index. BZ 426 6568 6569iASL: Prevent error message if CondRefOf target does not exist. Fixes 6570cases 6571where an error message is emitted if the target does not exist. BZ 516 6572 6573iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 6574(get ACPI tables on Windows). This was apparently broken in version 657520070919. 6576 6577AcpiXtract: Handle EOF while extracting data. Correctly handle the case 6578where 6579the EOF happens immediately after the last table in the input file. Print 6580completion message. Previously, no message was displayed in this case. 6581 6582---------------------------------------- 658301 July 2008. Summary of changes for version 20080701: 6584 65850) Git source tree / acpica.org 6586 6587Fixed a problem where a git-clone from http would not transfer the entire 6588source tree. 6589 65901) ACPI CA Core Subsystem: 6591 6592Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 6593enable bit. Now performs a read-change-write of the enable register 6594instead 6595of simply writing out the cached enable mask. This will prevent 6596inadvertent 6597enabling of GPEs if a rogue GPE is received during initialization (before 6598GPE 6599handlers are installed.) 6600 6601Implemented a copy for dynamically loaded tables. Previously, dynamically 6602loaded tables were simply mapped - but on some machines this memory is 6603corrupted after suspend. Now copy the table to a local buffer. For the 6604OpRegion case, added checksum verify. Use the table length from the table 6605header, not the region length. For the Buffer case, use the table length 6606also. Dennis Noordsij, Bob Moore. BZ 10734 6607 6608Fixed a problem where the same ACPI table could not be dynamically loaded 6609and 6610unloaded more than once. Without this change, a table cannot be loaded 6611again 6612once it has been loaded/unloaded one time. The current mechanism does not 6613unregister a table upon an unload. During a load, if the same table is 6614found, 6615this no longer returns an exception. BZ 722 6616 6617Fixed a problem where the wrong descriptor length was calculated for the 6618EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 6619EndTag 6620are calculated as 12 bytes long, but the actual length in the internal 6621descriptor is 16 because of the round-up to 8 on the 64-bit build. 6622Reported 6623by Linn Crosetto. BZ 728 6624 6625Fixed a possible memory leak in the Unload operator. The DdbHandle 6626returned 6627by Load() did not have its reference count decremented during unload, 6628leading 6629to a memory leak. Lin Ming. BZ 727 6630 6631Fixed a possible memory leak when deleting thermal/processor objects. Any 6632associated notify handlers (and objects) were not being deleted. Fiodor 6633Suietov. BZ 506 6634 6635Fixed the ordering of the ASCII names in the global mutex table to match 6636the 6637actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 6638only. 6639Vegard Nossum. BZ 726 6640 6641Enhanced the AcpiGetObjectInfo interface to return the number of required 6642arguments if the object is a control method. Added this call to the 6643debugger 6644so the proper number of default arguments are passed to a method. This 6645prevents a warning when executing methods from AcpiExec. 6646 6647Added a check for an invalid handle in AcpiGetObjectInfo. Return 6648AE_BAD_PARAMETER if input handle is invalid. BZ 474 6649 6650Fixed an extraneous warning from exconfig.c on the 64-bit build. 6651 6652Example Code and Data Size: These are the sizes for the OS-independent 6653acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6654debug version of the code includes the debug output trace mechanism and 6655has a 6656much larger code and data size. 6657 6658 Previous Release: 6659 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6660 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6661 Current Release: 6662 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6663 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6664 66652) iASL Compiler/Disassembler and Tools: 6666 6667iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 6668resource descriptor names. 6669 6670iASL: Detect invalid ASCII characters in input (windows version). Removed 6671the 6672"-CF" flag from the flex compile, enables correct detection of non-ASCII 6673characters in the input. BZ 441 6674 6675iASL: Eliminate warning when result of LoadTable is not used. Eliminate 6676the 6677"result of operation not used" warning when the DDB handle returned from 6678LoadTable is not used. The warning is not needed. BZ 590 6679 6680AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 6681method 6682to 6683pass address of table to the AML. Added option to disable OpRegion 6684simulation 6685to allow creation of an OpRegion with a real address that was passed to 6686_CFG. 6687All of this allows testing of the Load and Unload operators from 6688AcpiExec. 6689 6690Debugger: update tables command for unloaded tables. Handle unloaded 6691tables 6692and use the standard table header output routine. 6693 6694---------------------------------------- 669509 June 2008. Summary of changes for version 20080609: 6696 66971) ACPI CA Core Subsystem: 6698 6699Implemented a workaround for reversed _PRT entries. A significant number 6700of 6701BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 6702change dynamically detects and repairs this problem. Provides 6703compatibility 6704with MS ACPI. BZ 6859 6705 6706Simplified the internal ACPI hardware interfaces to eliminate the locking 6707flag parameter from Register Read/Write. Added a new external interface, 6708AcpiGetRegisterUnlocked. 6709 6710Fixed a problem where the invocation of a GPE control method could hang. 6711This 6712was a regression introduced in 20080514. The new method argument count 6713validation mechanism can enter an infinite loop when a GPE method is 6714dispatched. Problem fixed by removing the obsolete code that passed GPE 6715block 6716information to the notify handler via the control method parameter 6717pointer. 6718 6719Fixed a problem where the _SST execution status was incorrectly returned 6720to 6721the caller of AcpiEnterSleepStatePrep. This was a regression introduced 6722in 672320080514. _SST is optional and a NOT_FOUND exception should never be 6724returned. BZ 716 6725 6726Fixed a problem where a deleted object could be accessed from within the 6727AML 6728parser. This was a regression introduced in version 20080123 as a fix for 6729the 6730Unload operator. Lin Ming. BZ 10669 6731 6732Cleaned up the debug operand dump mechanism. Eliminated unnecessary 6733operands 6734and eliminated the use of a negative index in a loop. Operands are now 6735displayed in the correct order, not backwards. This also fixes a 6736regression 6737introduced in 20080514 on 64-bit systems where the elimination of 6738ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 6739715 6740 6741Fixed a possible memory leak in EvPciConfigRegionSetup where the error 6742exit 6743path did not delete a locally allocated structure. 6744 6745Updated definitions for the DMAR and SRAT tables to synchronize with the 6746current specifications. Includes disassembler support. 6747 6748Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 6749loop termination value was used. Loop terminated on iteration early, 6750missing 6751one mutex. Linn Crosetto 6752 6753Example Code and Data Size: These are the sizes for the OS-independent 6754acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6755debug version of the code includes the debug output trace mechanism and 6756has a 6757much larger code and data size. 6758 6759 Previous Release: 6760 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6761 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6762 Current Release: 6763 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6764 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6765 67662) iASL Compiler/Disassembler and Tools: 6767 6768Disassembler: Implemented support for EisaId() within _CID objects. Now 6769disassemble integer _CID objects back to EisaId invocations, including 6770multiple integers within _CID packages. Includes single-step support for 6771debugger also. 6772 6773Disassembler: Added support for DMAR and SRAT table definition changes. 6774 6775---------------------------------------- 677614 May 2008. Summary of changes for version 20080514: 6777 67781) ACPI CA Core Subsystem: 6779 6780Fixed a problem where GPEs were enabled too early during the ACPICA 6781initialization. This could lead to "handler not installed" errors on some 6782machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 6783This 6784ensures that all operation regions and devices throughout the namespace 6785have 6786been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 6787 6788Implemented a change to the enter sleep code. Moved execution of the _GTS 6789method to just before setting sleep enable bit. The execution was moved 6790from 6791AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 6792immediately before the SLP_EN bit is set, as per the ACPI specification. 6793Luming Yu, BZ 1653. 6794 6795Implemented a fix to disable unknown GPEs (2nd version). Now always 6796disable 6797the GPE, even if ACPICA thinks that that it is already disabled. It is 6798possible that the AML or some other code has enabled the GPE unbeknownst 6799to 6800the ACPICA code. 6801 6802Fixed a problem with the Field operator where zero-length fields would 6803return 6804an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 6805ASL 6806field declarations in Field(), BankField(), and IndexField(). BZ 10606. 6807 6808Implemented a fix for the Load operator, now load the table at the 6809namespace 6810root. This reverts a change introduced in version 20071019. The table is 6811now 6812loaded at the namespace root even though this goes against the ACPI 6813specification. This provides compatibility with other ACPI 6814implementations. 6815The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 6816Ming. 6817 6818Fixed a problem where ACPICA would not Load() tables with unusual 6819signatures. 6820Now ignore ACPI table signature for Load() operator. Only "SSDT" is 6821acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 6822Therefore, signature validation is worthless. Apparently MS ACPI accepts 6823such 6824signatures, ACPICA must be compatible. BZ 10454. 6825 6826Fixed a possible negative array index in AcpiUtValidateException. Added 6827NULL 6828fields to the exception string arrays to eliminate a -1 subtraction on 6829the 6830SubStatus field. 6831 6832Updated the debug tracking macros to reduce overall code and data size. 6833Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 6834instead of pointers to static strings. Jan Beulich and Bob Moore. 6835 6836Implemented argument count checking in control method invocation via 6837AcpiEvaluateObject. Now emit an error if too few arguments, warning if 6838too 6839many. This applies only to extern programmatic control method execution, 6840not 6841method-to-method calls within the AML. Lin Ming. 6842 6843Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 6844no 6845longer needed, especially with the removal of 16-bit support. It was 6846replaced 6847mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 6848bit 6849on 685032/64-bit platforms is required. 6851 6852Added the C const qualifier for appropriate string constants -- mostly 6853MODULE_NAME and printf format strings. Jan Beulich. 6854 6855Example Code and Data Size: These are the sizes for the OS-independent 6856acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6857debug version of the code includes the debug output trace mechanism and 6858has a 6859much larger code and data size. 6860 6861 Previous Release: 6862 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6863 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6864 Current Release: 6865 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6866 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6867 68682) iASL Compiler/Disassembler and Tools: 6869 6870Implemented ACPI table revision ID validation in the disassembler. Zero 6871is 6872always invalid. For DSDTs, the ID controls the interpreter integer width. 68731 6874means 32-bit and this is unusual. 2 or greater is 64-bit. 6875 6876---------------------------------------- 687721 March 2008. Summary of changes for version 20080321: 6878 68791) ACPI CA Core Subsystem: 6880 6881Implemented an additional change to the GPE support in order to suppress 6882spurious or stray GPEs. The AcpiEvDisableGpe function will now 6883permanently 6884disable incoming GPEs that are neither enabled nor disabled -- meaning 6885that 6886the GPE is unknown to the system. This should prevent future interrupt 6887floods 6888from that GPE. BZ 6217 (Zhang Rui) 6889 6890Fixed a problem where NULL package elements were not returned to the 6891AcpiEvaluateObject interface correctly. The element was simply ignored 6892instead of returning a NULL ACPI_OBJECT package element, potentially 6893causing 6894a buffer overflow and/or confusing the caller who expected a fixed number 6895of 6896elements. BZ 10132 (Lin Ming, Bob Moore) 6897 6898Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 6899Dword, 6900Qword), Field, BankField, and IndexField operators when invoked from 6901inside 6902an executing control method. In this case, these operators created 6903namespace 6904nodes that were incorrectly left marked as permanent nodes instead of 6905temporary nodes. This could cause a problem if there is race condition 6906between an exiting control method and a running namespace walk. (Reported 6907by 6908Linn Crosetto) 6909 6910Fixed a problem where the CreateField and CreateXXXField operators would 6911incorrectly allow duplicate names (the name of the field) with no 6912exception 6913generated. 6914 6915Implemented several changes for Notify handling. Added support for new 6916Notify 6917values (ACPI 2.0+) and improved the Notify debug output. Notify on 6918PowerResource objects is no longer allowed, as per the ACPI 6919specification. 6920(Bob Moore, Zhang Rui) 6921 6922All Reference Objects returned via the AcpiEvaluateObject interface are 6923now 6924marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 6925for 6926NULL objects - either NULL package elements or unresolved named 6927references. 6928 6929Fixed a problem where an extraneous debug message was produced for 6930package 6931objects (when debugging enabled). The message "Package List length larger 6932than NumElements count" is now produced in the correct case, and is now 6933an 6934error message rather than a debug message. Added a debug message for the 6935opposite case, where NumElements is larger than the Package List (the 6936package 6937will be padded out with NULL elements as per the ACPI spec.) 6938 6939Implemented several improvements for the output of the ASL "Debug" object 6940to 6941clarify and keep all data for a given object on one output line. 6942 6943Fixed two size calculation issues with the variable-length Start 6944Dependent 6945resource descriptor. 6946 6947Example Code and Data Size: These are the sizes for the OS-independent 6948acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6949debug version of the code includes the debug output trace mechanism and 6950has 6951a much larger code and data size. 6952 6953 Previous Release: 6954 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6955 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6956 Current Release: 6957 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6958 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6959 69602) iASL Compiler/Disassembler and Tools: 6961 6962Fixed a problem with the use of the Switch operator where execution of 6963the 6964containing method by multiple concurrent threads could cause an 6965AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 6966actual Switch opcode, it must be simulated with local named temporary 6967variables and if/else pairs. The solution chosen was to mark any method 6968that 6969uses Switch as Serialized, thus preventing multiple thread entries. BZ 6970469. 6971 6972---------------------------------------- 697313 February 2008. Summary of changes for version 20080213: 6974 69751) ACPI CA Core Subsystem: 6976 6977Implemented another MS compatibility design change for GPE/Notify 6978handling. 6979GPEs are now cleared/enabled asynchronously to allow all pending notifies 6980to 6981complete first. It is expected that the OSL will queue the enable request 6982behind all pending notify requests (may require changes to the local host 6983OSL 6984in AcpiOsExecute). Alexey Starikovskiy. 6985 6986Fixed a problem where buffer and package objects passed as arguments to a 6987control method via the external AcpiEvaluateObject interface could cause 6988an 6989AE_AML_INTERNAL exception depending on the order and type of operators 6990executed by the target control method. 6991 6992Fixed a problem where resource descriptor size optimization could cause a 6993problem when a _CRS resource template is passed to a _SRS method. The 6994_SRS 6995resource template must use the same descriptors (with the same size) as 6996returned from _CRS. This change affects the following resource 6997descriptors: 6998IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 69999487) 7000 7001Fixed a problem where a CopyObject to RegionField, BankField, and 7002IndexField 7003objects did not perform an implicit conversion as it should. These types 7004must 7005retain their initial type permanently as per the ACPI specification. 7006However, 7007a CopyObject to all other object types should not perform an implicit 7008conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 7009 7010Fixed a problem with the AcpiGetDevices interface where the mechanism to 7011match device CIDs did not examine the entire list of available CIDs, but 7012instead aborted on the first non-matching CID. Andrew Patterson. 7013 7014Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 7015was 7016inadvertently changed to return a 16-bit value instead of a 32-bit value, 7017truncating the upper dword of a 64-bit value. This macro is only used to 7018display debug output, so no incorrect calculations were made. Also, 7019reimplemented the macro so that a 64-bit shift is not performed by 7020inefficient compilers. 7021 7022Added missing va_end statements that should correspond with each va_start 7023statement. 7024 7025Example Code and Data Size: These are the sizes for the OS-independent 7026acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7027debug version of the code includes the debug output trace mechanism and 7028has 7029a much larger code and data size. 7030 7031 Previous Release: 7032 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7033 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7034 Current Release: 7035 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7036 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7037 70382) iASL Compiler/Disassembler and Tools: 7039 7040Implemented full disassembler support for the following new ACPI tables: 7041BERT, EINJ, and ERST. Implemented partial disassembler support for the 7042complicated HEST table. These tables support the Windows Hardware Error 7043Architecture (WHEA). 7044 7045---------------------------------------- 704623 January 2008. Summary of changes for version 20080123: 7047 70481) ACPI CA Core Subsystem: 7049 7050Added the 2008 copyright to all module headers and signons. This affects 7051virtually every file in the ACPICA core subsystem, the iASL compiler, and 7052the tools/utilities. 7053 7054Fixed a problem with the SizeOf operator when used with Package and 7055Buffer 7056objects. These objects have deferred execution for some arguments, and 7057the 7058execution is now completed before the SizeOf is executed. This problem 7059caused 7060unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 7061BZ 70629558 7063 7064Implemented an enhancement to the interpreter "slack mode". In the 7065absence 7066of 7067an explicit return or an implicitly returned object from the last 7068executed 7069opcode, a control method will now implicitly return an integer of value 0 7070for 7071Microsoft compatibility. (Lin Ming) BZ 392 7072 7073Fixed a problem with the Load operator where an exception was not 7074returned 7075in 7076the case where the table is already loaded. (Lin Ming) BZ 463 7077 7078Implemented support for the use of DDBHandles as an Indexed Reference, as 7079per 7080the ACPI spec. (Lin Ming) BZ 486 7081 7082Implemented support for UserTerm (Method invocation) for the Unload 7083operator 7084as per the ACPI spec. (Lin Ming) BZ 580 7085 7086Fixed a problem with the LoadTable operator where the OemId and 7087OemTableId 7088input strings could cause unexpected failures if they were shorter than 7089the 7090maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 7091 7092Implemented support for UserTerm (Method invocation) for the Unload 7093operator 7094as per the ACPI spec. (Lin Ming) BZ 580 7095 7096Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 7097HEST, 7098IBFT, UEFI, WDAT. Disassembler support is forthcoming. 7099 7100Example Code and Data Size: These are the sizes for the OS-independent 7101acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7102debug version of the code includes the debug output trace mechanism and 7103has 7104a much larger code and data size. 7105 7106 Previous Release: 7107 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7108 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7109 Current Release: 7110 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7111 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7112 71132) iASL Compiler/Disassembler and Tools: 7114 7115Implemented support in the disassembler for checksum validation on 7116incoming 7117binary DSDTs and SSDTs. If incorrect, a message is displayed within the 7118table 7119header dump at the start of the disassembly. 7120 7121Implemented additional debugging information in the namespace listing 7122file 7123created during compilation. In addition to the namespace hierarchy, the 7124full 7125pathname to each namespace object is displayed. 7126 7127Fixed a problem with the disassembler where invalid ACPI tables could 7128cause 7129faults or infinite loops. 7130 7131Fixed an unexpected parse error when using the optional "parameter types" 7132list in a control method declaration. (Lin Ming) BZ 397 7133 7134Fixed a problem where two External declarations with the same name did 7135not 7136cause an error (Lin Ming) BZ 509 7137 7138Implemented support for full TermArgs (adding Argx, Localx and method 7139invocation) for the ParameterData parameter to the LoadTable operator. 7140(Lin 7141Ming) BZ 583,587 7142 7143---------------------------------------- 714419 December 2007. Summary of changes for version 20071219: 7145 71461) ACPI CA Core Subsystem: 7147 7148Implemented full support for deferred execution for the TermArg string 7149arguments for DataTableRegion. This enables forward references and full 7150operand resolution for the three string arguments. Similar to 7151OperationRegion 7152deferred argument execution.) Lin Ming. BZ 430 7153 7154Implemented full argument resolution support for the BankValue argument 7155to 7156BankField. Previously, only constants were supported, now any TermArg may 7157be 7158used. Lin Ming BZ 387, 393 7159 7160Fixed a problem with AcpiGetDevices where the search of a branch of the 7161device tree could be terminated prematurely. In accordance with the ACPI 7162specification, the search down the current branch is terminated if a 7163device 7164is both not present and not functional (instead of just not present.) 7165Yakui 7166Zhao. 7167 7168Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 7169if 7170the underlying AML code changed the GPE enable registers. Now, any 7171unknown 7172incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 7173disabled 7174instead of simply ignored. Rui Zhang. 7175 7176Fixed a problem with Index Fields where the Index register was 7177incorrectly 7178limited to a maximum of 32 bits. Now any size may be used. 7179 7180Fixed a couple memory leaks associated with "implicit return" objects 7181when 7182the AML Interpreter slack mode is enabled. Lin Ming BZ 349 7183 7184Example Code and Data Size: These are the sizes for the OS-independent 7185acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7186debug version of the code includes the debug output trace mechanism and 7187has 7188a much larger code and data size. 7189 7190 Previous Release: 7191 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7192 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7193 Current Release: 7194 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7195 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7196 7197---------------------------------------- 719814 November 2007. Summary of changes for version 20071114: 7199 72001) ACPI CA Core Subsystem: 7201 7202Implemented event counters for each of the Fixed Events, the ACPI SCI 7203(interrupt) itself, and control methods executed. Named 7204AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 7205These 7206should be useful for debugging and statistics. 7207 7208Implemented a new external interface, AcpiGetStatistics, to retrieve the 7209contents of the various event counters. Returns the current values for 7210AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 7211AcpiMethodCount. The interface can be expanded in the future if new 7212counters 7213are added. Device drivers should use this interface rather than access 7214the 7215counters directly. 7216 7217Fixed a problem with the FromBCD and ToBCD operators. With some 7218compilers, 7219the ShortDivide function worked incorrectly, causing problems with the 7220BCD 7221functions with large input values. A truncation from 64-bit to 32-bit 7222inadvertently occurred. Internal BZ 435. Lin Ming 7223 7224Fixed a problem with Index references passed as method arguments. 7225References 7226passed as arguments to control methods were dereferenced immediately 7227(before 7228control was passed to the called method). The references are now 7229correctly 7230passed directly to the called method. BZ 5389. Lin Ming 7231 7232Fixed a problem with CopyObject used in conjunction with the Index 7233operator. 7234The reference was incorrectly dereferenced before the copy. The reference 7235is 7236now correctly copied. BZ 5391. Lin Ming 7237 7238Fixed a problem with Control Method references within Package objects. 7239These 7240references are now correctly generated. This completes the package 7241construction overhaul that began in version 20071019. 7242 7243Example Code and Data Size: These are the sizes for the OS-independent 7244acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7245debug version of the code includes the debug output trace mechanism and 7246has 7247a much larger code and data size. 7248 7249 Previous Release: 7250 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7251 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7252 Current Release: 7253 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7254 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7255 7256 72572) iASL Compiler/Disassembler and Tools: 7258 7259The AcpiExec utility now installs handlers for all of the predefined 7260Operation Region types. New types supported are: PCI_Config, CMOS, and 7261PCIBARTarget. 7262 7263Fixed a problem with the 64-bit version of AcpiExec where the extended 7264(64- 7265bit) address fields for the DSDT and FACS within the FADT were not being 7266used, causing truncation of the upper 32-bits of these addresses. Lin 7267Ming 7268and Bob Moore 7269 7270---------------------------------------- 727119 October 2007. Summary of changes for version 20071019: 7272 72731) ACPI CA Core Subsystem: 7274 7275Fixed a problem with the Alias operator when the target of the alias is a 7276named ASL operator that opens a new scope -- Scope, Device, 7277PowerResource, 7278Processor, and ThermalZone. In these cases, any children of the original 7279operator could not be accessed via the alias, potentially causing 7280unexpected 7281AE_NOT_FOUND exceptions. (BZ 9067) 7282 7283Fixed a problem with the Package operator where all named references were 7284created as object references and left otherwise unresolved. According to 7285the 7286ACPI specification, a Package can only contain Data Objects or references 7287to 7288control methods. The implication is that named references to Data Objects 7289(Integer, Buffer, String, Package, BufferField, Field) should be resolved 7290immediately upon package creation. This is the approach taken with this 7291change. References to all other named objects (Methods, Devices, Scopes, 7292etc.) are all now properly created as reference objects. (BZ 5328) 7293 7294Reverted a change to Notify handling that was introduced in version 729520070508. This version changed the Notify handling from asynchronous to 7296fully synchronous (Device driver Notify handling with respect to the 7297Notify 7298ASL operator). It was found that this change caused more problems than it 7299solved and was removed by most users. 7300 7301Fixed a problem with the Increment and Decrement operators where the type 7302of 7303the target object could be unexpectedly and incorrectly changed. (BZ 353) 7304Lin Ming. 7305 7306Fixed a problem with the Load and LoadTable operators where the table 7307location within the namespace was ignored. Instead, the table was always 7308loaded into the root or current scope. Lin Ming. 7309 7310Fixed a problem with the Load operator when loading a table from a buffer 7311object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 7312 7313Fixed a problem with the Debug object where a store of a DdbHandle 7314reference 7315object to the Debug object could cause a fault. 7316 7317Added a table checksum verification for the Load operator, in the case 7318where 7319the load is from a buffer. (BZ 578). 7320 7321Implemented additional parameter validation for the LoadTable operator. 7322The 7323length of the input strings SignatureString, OemIdString, and OemTableId 7324are 7325now checked for maximum lengths. (BZ 582) Lin Ming. 7326 7327Example Code and Data Size: These are the sizes for the OS-independent 7328acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7329debug version of the code includes the debug output trace mechanism and 7330has 7331a much larger code and data size. 7332 7333 Previous Release: 7334 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7335 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7336 Current Release: 7337 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7338 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7339 7340 73412) iASL Compiler/Disassembler: 7342 7343Fixed a problem where if a single file was specified and the file did not 7344exist, no error message was emitted. (Introduced with wildcard support in 7345version 20070917.) 7346 7347---------------------------------------- 734819 September 2007. Summary of changes for version 20070919: 7349 73501) ACPI CA Core Subsystem: 7351 7352Designed and implemented new external interfaces to install and remove 7353handlers for ACPI table-related events. Current events that are defined 7354are 7355LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 7356they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 7357AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 7358 7359Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 7360(acpi_serialized option on Linux) could cause some systems to hang during 7361initialization. (Bob Moore) BZ 8171 7362 7363Fixed a problem where objects of certain types (Device, ThermalZone, 7364Processor, PowerResource) can be not found if they are declared and 7365referenced from within the same control method (Lin Ming) BZ 341 7366 7367Example Code and Data Size: These are the sizes for the OS-independent 7368acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7369debug version of the code includes the debug output trace mechanism and 7370has 7371a much larger code and data size. 7372 7373 Previous Release: 7374 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7375 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7376 Current Release: 7377 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7378 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7379 7380 73812) iASL Compiler/Disassembler: 7382 7383Implemented support to allow multiple files to be compiled/disassembled 7384in 7385a 7386single invocation. This includes command line wildcard support for both 7387the 7388Windows and Unix versions of the compiler. This feature simplifies the 7389disassembly and compilation of multiple ACPI tables in a single 7390directory. 7391 7392---------------------------------------- 739308 May 2007. Summary of changes for version 20070508: 7394 73951) ACPI CA Core Subsystem: 7396 7397Implemented a Microsoft compatibility design change for the handling of 7398the 7399Notify AML operator. Previously, notify handlers were dispatched and 7400executed completely asynchronously in a deferred thread. The new design 7401still executes the notify handlers in a different thread, but the 7402original 7403thread that executed the Notify() now waits at a synchronization point 7404for 7405the notify handler to complete. Some machines depend on a synchronous 7406Notify 7407operator in order to operate correctly. 7408 7409Implemented support to allow Package objects to be passed as method 7410arguments to the external AcpiEvaluateObject interface. Previously, this 7411would return the AE_NOT_IMPLEMENTED exception. This feature had not been 7412implemented since there were no reserved control methods that required it 7413until recently. 7414 7415Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 7416that 7417contained invalid non-zero values in reserved fields could cause later 7418failures because these fields have meaning in later revisions of the 7419FADT. 7420For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 7421fields 7422are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 7423 7424Fixed a problem where the Global Lock handle was not properly updated if 7425a 7426thread that acquired the Global Lock via executing AML code then 7427attempted 7428to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 7429Joe 7430Liu. 7431 7432Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 7433could be corrupted if the interrupt being removed was at the head of the 7434list. Reported by Linn Crosetto. 7435 7436Example Code and Data Size: These are the sizes for the OS-independent 7437acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7438debug version of the code includes the debug output trace mechanism and 7439has 7440a much larger code and data size. 7441 7442 Previous Release: 7443 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7444 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7445 Current Release: 7446 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7447 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7448 7449---------------------------------------- 745020 March 2007. Summary of changes for version 20070320: 7451 74521) ACPI CA Core Subsystem: 7453 7454Implemented a change to the order of interpretation and evaluation of AML 7455operand objects within the AML interpreter. The interpreter now evaluates 7456operands in the order that they appear in the AML stream (and the 7457corresponding ASL code), instead of in the reverse order (after the 7458entire 7459operand list has been parsed). The previous behavior caused several 7460subtle 7461incompatibilities with the Microsoft AML interpreter as well as being 7462somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 7463 7464Implemented a change to the ACPI Global Lock support. All interfaces to 7465the 7466global lock now allow the same thread to acquire the lock multiple times. 7467This affects the AcpiAcquireGlobalLock external interface to the global 7468lock 7469as well as the internal use of the global lock to support AML fields -- a 7470control method that is holding the global lock can now simultaneously 7471access 7472AML fields that require global lock protection. Previously, in both 7473cases, 7474this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 7475to 7476AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 7477Controller. There is no change to the behavior of the AML Acquire 7478operator, 7479as this can already be used to acquire a mutex multiple times by the same 7480thread. BZ 8066. With assistance from Alexey Starikovskiy. 7481 7482Fixed a problem where invalid objects could be referenced in the AML 7483Interpreter after error conditions. During operand evaluation, ensure 7484that 7485the internal "Return Object" field is cleared on error and only valid 7486pointers are stored there. Caused occasional access to deleted objects 7487that 7488resulted in "large reference count" warning messages. Valery Podrezov. 7489 7490Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 7491on 7492deeply nested control method invocations. BZ 7873, local BZ 487. Valery 7493Podrezov. 7494 7495Fixed an internal problem with the handling of result objects on the 7496interpreter result stack. BZ 7872. Valery Podrezov. 7497 7498Removed obsolete code that handled the case where AML_NAME_OP is the 7499target 7500of a reference (Reference.Opcode). This code was no longer necessary. BZ 75017874. Valery Podrezov. 7502 7503Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 7504was 7505a 7506remnant from the previously discontinued 16-bit support. 7507 7508Example Code and Data Size: These are the sizes for the OS-independent 7509acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7510debug version of the code includes the debug output trace mechanism and 7511has 7512a much larger code and data size. 7513 7514 Previous Release: 7515 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7516 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7517 Current Release: 7518 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7519 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7520 7521---------------------------------------- 752226 January 2007. Summary of changes for version 20070126: 7523 75241) ACPI CA Core Subsystem: 7525 7526Added the 2007 copyright to all module headers and signons. This affects 7527virtually every file in the ACPICA core subsystem, the iASL compiler, and 7528the utilities. 7529 7530Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 7531during a table load. A bad pointer was passed in the case where the DSDT 7532is 7533overridden, causing a fault in this case. 7534 7535Example Code and Data Size: These are the sizes for the OS-independent 7536acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7537debug version of the code includes the debug output trace mechanism and 7538has 7539a much larger code and data size. 7540 7541 Previous Release: 7542 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7543 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7544 Current Release: 7545 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7546 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7547 7548---------------------------------------- 754915 December 2006. Summary of changes for version 20061215: 7550 75511) ACPI CA Core Subsystem: 7552 7553Support for 16-bit ACPICA has been completely removed since it is no 7554longer 7555necessary and it clutters the code. All 16-bit macros, types, and 7556conditional compiles have been removed, cleaning up and simplifying the 7557code 7558across the entire subsystem. DOS support is no longer needed since the 7559bootable Linux firmware kit is now available. 7560 7561The handler for the Global Lock is now removed during AcpiTerminate to 7562enable a clean subsystem restart, via the implementation of the 7563AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 7564HP) 7565 7566Implemented enhancements to the multithreading support within the 7567debugger 7568to enable improved multithreading debugging and evaluation of the 7569subsystem. 7570(Valery Podrezov) 7571 7572Debugger: Enhanced the Statistics/Memory command to emit the total 7573(maximum) 7574memory used during the execution, as well as the maximum memory consumed 7575by 7576each of the various object types. (Valery Podrezov) 7577 7578Example Code and Data Size: These are the sizes for the OS-independent 7579acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7580debug version of the code includes the debug output trace mechanism and 7581has 7582a much larger code and data size. 7583 7584 Previous Release: 7585 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7586 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7587 Current Release: 7588 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7589 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7590 7591 75922) iASL Compiler/Disassembler and Tools: 7593 7594AcpiExec: Implemented a new option (-m) to display full memory use 7595statistics upon subsystem/program termination. (Valery Podrezov) 7596 7597---------------------------------------- 759809 November 2006. Summary of changes for version 20061109: 7599 76001) ACPI CA Core Subsystem: 7601 7602Optimized the Load ASL operator in the case where the source operand is 7603an 7604operation region. Simply map the operation region memory, instead of 7605performing a bytewise read. (Region must be of type SystemMemory, see 7606below.) 7607 7608Fixed the Load ASL operator for the case where the source operand is a 7609region field. A buffer object is also allowed as the source operand. BZ 7610480 7611 7612Fixed a problem where the Load ASL operator allowed the source operand to 7613be 7614an operation region of any type. It is now restricted to regions of type 7615SystemMemory, as per the ACPI specification. BZ 481 7616 7617Additional cleanup and optimizations for the new Table Manager code. 7618 7619AcpiEnable will now fail if all of the required ACPI tables are not 7620loaded 7621(FADT, FACS, DSDT). BZ 477 7622 7623Added #pragma pack(8/4) to acobject.h to ensure that the structures in 7624this 7625header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 7626manually optimized to be aligned and will not work if it is byte-packed. 7627 7628Example Code and Data Size: These are the sizes for the OS-independent 7629acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7630debug version of the code includes the debug output trace mechanism and 7631has 7632a much larger code and data size. 7633 7634 Previous Release: 7635 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7636 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7637 Current Release: 7638 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7639 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7640 7641 76422) iASL Compiler/Disassembler and Tools: 7643 7644Fixed a problem where the presence of the _OSI predefined control method 7645within complex expressions could cause an internal compiler error. 7646 7647AcpiExec: Implemented full region support for multiple address spaces. 7648SpaceId is now part of the REGION object. BZ 429 7649 7650---------------------------------------- 765111 October 2006. Summary of changes for version 20061011: 7652 76531) ACPI CA Core Subsystem: 7654 7655Completed an AML interpreter performance enhancement for control method 7656execution. Previously a 2-pass parse/execution, control methods are now 7657completely parsed and executed in a single pass. This improves overall 7658interpreter performance by ~25%, reduces code size, and reduces CPU stack 7659use. (Valery Podrezov + interpreter changes in version 20051202 that 7660eliminated namespace loading during the pass one parse.) 7661 7662Implemented _CID support for PCI Root Bridge detection. If the _HID does 7663not 7664match the predefined PCI Root Bridge IDs, the _CID list (if present) is 7665now 7666obtained and also checked for an ID match. 7667 7668Implemented additional support for the PCI _ADR execution: upsearch until 7669a 7670device scope is found before executing _ADR. This allows PCI_Config 7671operation regions to be declared locally within control methods 7672underneath 7673PCI device objects. 7674 7675Fixed a problem with a possible race condition between threads executing 7676AcpiWalkNamespace and the AML interpreter. This condition was removed by 7677modifying AcpiWalkNamespace to (by default) ignore all temporary 7678namespace 7679entries created during any concurrent control method execution. An 7680additional namespace race condition is known to exist between 7681AcpiWalkNamespace and the Load/Unload ASL operators and is still under 7682investigation. 7683 7684Restructured the AML ParseLoop function, breaking it into several 7685subfunctions in order to reduce CPU stack use and improve 7686maintainability. 7687(Mikhail Kouzmich) 7688 7689AcpiGetHandle: Fix for parameter validation to detect invalid 7690combinations 7691of prefix handle and pathname. BZ 478 7692 7693Example Code and Data Size: These are the sizes for the OS-independent 7694acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7695debug version of the code includes the debug output trace mechanism and 7696has 7697a much larger code and data size. 7698 7699 Previous Release: 7700 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7701 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7702 Current Release: 7703 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7704 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7705 77062) iASL Compiler/Disassembler and Tools: 7707 7708Ported the -g option (get local ACPI tables) to the new ACPICA Table 7709Manager 7710to restore original behavior. 7711 7712---------------------------------------- 771327 September 2006. Summary of changes for version 20060927: 7714 77151) ACPI CA Core Subsystem: 7716 7717Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 7718These functions now use a spinlock for mutual exclusion and the interrupt 7719level indication flag is not needed. 7720 7721Fixed a problem with the Global Lock where the lock could appear to be 7722obtained before it is actually obtained. The global lock semaphore was 7723inadvertently created with one unit instead of zero units. (BZ 464) 7724Fiodor 7725Suietov. 7726 7727Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 7728during 7729a read from a buffer or region field. (BZ 458) Fiodor Suietov. 7730 7731Example Code and Data Size: These are the sizes for the OS-independent 7732acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7733debug version of the code includes the debug output trace mechanism and 7734has 7735a much larger code and data size. 7736 7737 Previous Release: 7738 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7739 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7740 Current Release: 7741 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7742 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7743 7744 77452) iASL Compiler/Disassembler and Tools: 7746 7747Fixed a compilation problem with the pre-defined Resource Descriptor 7748field 7749names where an "object does not exist" error could be incorrectly 7750generated 7751if the parent ResourceTemplate pathname places the template within a 7752different namespace scope than the current scope. (BZ 7212) 7753 7754Fixed a problem where the compiler could hang after syntax errors 7755detected 7756in an ElseIf construct. (BZ 453) 7757 7758Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 7759operator. An incorrect output filename was produced when this parameter 7760was 7761a null string (""). Now, the original input filename is used as the AML 7762output filename, with an ".aml" extension. 7763 7764Implemented a generic batch command mode for the AcpiExec utility 7765(execute 7766any AML debugger command) (Valery Podrezov). 7767 7768---------------------------------------- 776912 September 2006. Summary of changes for version 20060912: 7770 77711) ACPI CA Core Subsystem: 7772 7773Enhanced the implementation of the "serialized mode" of the interpreter 7774(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 7775specified, instead of creating a serialization semaphore per control 7776method, 7777the interpreter lock is simply no longer released before a blocking 7778operation during control method execution. This effectively makes the AML 7779Interpreter single-threaded. The overhead of a semaphore per-method is 7780eliminated. 7781 7782Fixed a regression where an error was no longer emitted if a control 7783method 7784attempts to create 2 objects of the same name. This once again returns 7785AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 7786that 7787will dynamically serialize the control method to possible prevent future 7788errors. (BZ 440) 7789 7790Integrated a fix for a problem with PCI Express HID detection in the PCI 7791Config Space setup procedure. (BZ 7145) 7792 7793Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 7794AcpiHwInitialize function - the FADT registers are now validated when the 7795table is loaded. 7796 7797Added two new warnings during FADT verification - 1) if the FADT is 7798larger 7799than the largest known FADT version, and 2) if there is a mismatch 7800between 7801a 780232-bit block address and the 64-bit X counterpart (when both are non- 7803zero.) 7804 7805Example Code and Data Size: These are the sizes for the OS-independent 7806acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7807debug version of the code includes the debug output trace mechanism and 7808has 7809a much larger code and data size. 7810 7811 Previous Release: 7812 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7813 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7814 Current Release: 7815 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7816 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7817 7818 78192) iASL Compiler/Disassembler and Tools: 7820 7821Fixed a problem with the implementation of the Switch() operator where 7822the 7823temporary variable was declared too close to the actual Switch, instead 7824of 7825at method level. This could cause a problem if the Switch() operator is 7826within a while loop, causing an error on the second iteration. (BZ 460) 7827 7828Disassembler - fix for error emitted for unknown type for target of scope 7829operator. Now, ignore it and continue. 7830 7831Disassembly of an FADT now verifies the input FADT and reports any errors 7832found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 7833 7834Disassembly of raw data buffers with byte initialization data now 7835prefixes 7836each output line with the current buffer offset. 7837 7838Disassembly of ASF! table now includes all variable-length data fields at 7839the end of some of the subtables. 7840 7841The disassembler now emits a comment if a buffer appears to be a 7842ResourceTemplate, but cannot be disassembled as such because the EndTag 7843does 7844not appear at the very end of the buffer. 7845 7846AcpiExec - Added the "-t" command line option to enable the serialized 7847mode 7848of the AML interpreter. 7849 7850---------------------------------------- 785131 August 2006. Summary of changes for version 20060831: 7852 78531) ACPI CA Core Subsystem: 7854 7855Miscellaneous fixes for the Table Manager: 7856- Correctly initialize internal common FADT for all 64-bit "X" fields 7857- Fixed a couple table mapping issues during table load 7858- Fixed a couple alignment issues for IA64 7859- Initialize input array to zero in AcpiInitializeTables 7860- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 7861AcpiGetTableByIndex 7862 7863Change for GPE support: when a "wake" GPE is received, all wake GPEs are 7864now 7865immediately disabled to prevent the waking GPE from firing again and to 7866prevent other wake GPEs from interrupting the wake process. 7867 7868Added the AcpiGpeCount global that tracks the number of processed GPEs, 7869to 7870be used for debugging systems with a large number of ACPI interrupts. 7871 7872Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 7873both the ACPICA headers and the disassembler. 7874 7875Example Code and Data Size: These are the sizes for the OS-independent 7876acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7877debug version of the code includes the debug output trace mechanism and 7878has 7879a much larger code and data size. 7880 7881 Previous Release: 7882 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7883 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7884 Current Release: 7885 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7886 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7887 7888 78892) iASL Compiler/Disassembler and Tools: 7890 7891Disassembler support for the DMAR ACPI table. 7892 7893---------------------------------------- 789423 August 2006. Summary of changes for version 20060823: 7895 78961) ACPI CA Core Subsystem: 7897 7898The Table Manager component has been completely redesigned and 7899reimplemented. The new design is much simpler, and reduces the overall 7900code 7901and data size of the kernel-resident ACPICA by approximately 5%. Also, it 7902is 7903now possible to obtain the ACPI tables very early during kernel 7904initialization, even before dynamic memory management is initialized. 7905(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 7906 7907Obsolete ACPICA interfaces: 7908 7909- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 7910init 7911time). 7912- AcpiLoadTable: Not needed. 7913- AcpiUnloadTable: Not needed. 7914 7915New ACPICA interfaces: 7916 7917- AcpiInitializeTables: Must be called before the table manager can be 7918used. 7919- AcpiReallocateRootTable: Used to transfer the root table to dynamically 7920allocated memory after it becomes available. 7921- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 7922tables 7923in the RSDT/XSDT. 7924 7925Other ACPICA changes: 7926 7927- AcpiGetTableHeader returns the actual mapped table header, not a copy. 7928Use 7929AcpiOsUnmapMemory to free this mapping. 7930- AcpiGetTable returns the actual mapped table. The mapping is managed 7931internally and must not be deleted by the caller. Use of this interface 7932causes no additional dynamic memory allocation. 7933- AcpiFindRootPointer: Support for physical addressing has been 7934eliminated, 7935it appeared to be unused. 7936- The interface to AcpiOsMapMemory has changed to be consistent with the 7937other allocation interfaces. 7938- The interface to AcpiOsGetRootPointer has changed to eliminate 7939unnecessary 7940parameters. 7941- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 794264- 7943bit platforms. Was previously 64 bits on all platforms. 7944- The interface to the ACPI Global Lock acquire/release macros have 7945changed 7946slightly since ACPICA no longer keeps a local copy of the FACS with a 7947constructed pointer to the actual global lock. 7948 7949Porting to the new table manager: 7950 7951- AcpiInitializeTables: Must be called once, and can be called anytime 7952during the OS initialization process. It allows the host to specify an 7953area 7954of memory to be used to store the internal version of the RSDT/XSDT (root 7955table). This allows the host to access ACPI tables before memory 7956management 7957is initialized and running. 7958- AcpiReallocateRootTable: Can be called after memory management is 7959running 7960to copy the root table to a dynamically allocated array, freeing up the 7961scratch memory specified in the call to AcpiInitializeTables. 7962- AcpiSubsystemInitialize: This existing interface is independent of the 7963Table Manager, and does not have to be called before the Table Manager 7964can 7965be used, it only must be called before the rest of ACPICA can be used. 7966- ACPI Tables: Some changes have been made to the names and structure of 7967the 7968actbl.h and actbl1.h header files and may require changes to existing 7969code. 7970For example, bitfields have been completely removed because of their lack 7971of 7972portability across C compilers. 7973- Update interfaces to the Global Lock acquire/release macros if local 7974versions are used. (see acwin.h) 7975 7976Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 7977 7978New files: tbfind.c 7979 7980Example Code and Data Size: These are the sizes for the OS-independent 7981acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7982debug version of the code includes the debug output trace mechanism and 7983has 7984a much larger code and data size. 7985 7986 Previous Release: 7987 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7988 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7989 Current Release: 7990 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7991 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7992 7993 79942) iASL Compiler/Disassembler and Tools: 7995 7996No changes for this release. 7997 7998---------------------------------------- 799921 July 2006. Summary of changes for version 20060721: 8000 80011) ACPI CA Core Subsystem: 8002 8003The full source code for the ASL test suite used to validate the iASL 8004compiler and the ACPICA core subsystem is being released with the ACPICA 8005source for the first time. The source is contained in a separate package 8006and 8007consists of over 1100 files that exercise all ASL/AML operators. The 8008package 8009should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 8010Fiodor 8011Suietov) 8012 8013Completed a new design and implementation for support of the ACPI Global 8014Lock. On the OS side, the global lock is now treated as a standard AML 8015mutex. Previously, multiple OS threads could "acquire" the global lock 8016simultaneously. However, this could cause the BIOS to be starved out of 8017the 8018lock - especially in cases such as the Embedded Controller driver where 8019there is a tight coupling between the OS and the BIOS. 8020 8021Implemented an optimization for the ACPI Global Lock interrupt mechanism. 8022The Global Lock interrupt handler no longer queues the execution of a 8023separate thread to signal the global lock semaphore. Instead, the 8024semaphore 8025is signaled directly from the interrupt handler. 8026 8027Implemented support within the AML interpreter for package objects that 8028contain a larger AML length (package list length) than the package 8029element 8030count. In this case, the length of the package is truncated to match the 8031package element count. Some BIOS code apparently modifies the package 8032length 8033on the fly, and this change supports this behavior. Provides 8034compatibility 8035with the MS AML interpreter. (With assistance from Fiodor Suietov) 8036 8037Implemented a temporary fix for the BankValue parameter of a Bank Field 8038to 8039support all constant values, now including the Zero and One opcodes. 8040Evaluation of this parameter must eventually be converted to a full 8041TermArg 8042evaluation. A not-implemented error is now returned (temporarily) for 8043non- 8044constant values for this parameter. 8045 8046Fixed problem reports (Fiodor Suietov) integrated: 8047- Fix for premature object deletion after CopyObject on Operation Region 8048(BZ 8049350) 8050 8051Example Code and Data Size: These are the sizes for the OS-independent 8052acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8053debug version of the code includes the debug output trace mechanism and 8054has 8055a much larger code and data size. 8056 8057 Previous Release: 8058 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 8059 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 8060 Current Release: 8061 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8062 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8063 8064 80652) iASL Compiler/Disassembler and Tools: 8066 8067No changes for this release. 8068 8069---------------------------------------- 807007 July 2006. Summary of changes for version 20060707: 8071 80721) ACPI CA Core Subsystem: 8073 8074Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 8075that do not allow the initialization of address pointers within packed 8076structures - even though the hardware itself may support misaligned 8077transfers. Some of the debug data structures are packed by default to 8078minimize size. 8079 8080Added an error message for the case where AcpiOsGetThreadId() returns 8081zero. 8082A non-zero value is required by the core ACPICA code to ensure the proper 8083operation of AML mutexes and recursive control methods. 8084 8085The DSDT is now the only ACPI table that determines whether the AML 8086interpreter is in 32-bit or 64-bit mode. Not really a functional change, 8087but 8088the hooks for per-table 32/64 switching have been removed from the code. 8089A 8090clarification to the ACPI specification is forthcoming in ACPI 3.0B. 8091 8092Fixed a possible leak of an OwnerID in the error path of 8093AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 8094deletion to a single place in AcpiTbUninstallTable to correct possible 8095leaks 8096when using the AcpiTbDeleteTablesByType interface (with assistance from 8097Lance Ortiz.) 8098 8099Fixed a problem with Serialized control methods where the semaphore 8100associated with the method could be over-signaled after multiple method 8101invocations. 8102 8103Fixed two issues with the locking of the internal namespace data 8104structure. 8105Both the Unload() operator and AcpiUnloadTable interface now lock the 8106namespace during the namespace deletion associated with the table unload 8107(with assistance from Linn Crosetto.) 8108 8109Fixed problem reports (Valery Podrezov) integrated: 8110- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 8111 8112Fixed problem reports (Fiodor Suietov) integrated: 8113- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 8114- On Address Space handler deletion, needless deactivation call (BZ 374) 8115- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 8116375) 8117- Possible memory leak, Notify sub-objects of Processor, Power, 8118ThermalZone 8119(BZ 376) 8120- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 8121- Minimum Length of RSDT should be validated (BZ 379) 8122- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 8123Handler (BZ (380) 8124- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 8125loaded 8126(BZ 381) 8127 8128Example Code and Data Size: These are the sizes for the OS-independent 8129acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8130debug version of the code includes the debug output trace mechanism and 8131has 8132a much larger code and data size. 8133 8134 Previous Release: 8135 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8136 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8137 Current Release: 8138 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8139 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8140 8141 81422) iASL Compiler/Disassembler and Tools: 8143 8144Fixed problem reports: 8145Compiler segfault when ASL contains a long (>1024) String declaration (BZ 8146436) 8147 8148---------------------------------------- 814923 June 2006. Summary of changes for version 20060623: 8150 81511) ACPI CA Core Subsystem: 8152 8153Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 8154allows the type to be customized to the host OS for improved efficiency 8155(since a spinlock is usually a very small object.) 8156 8157Implemented support for "ignored" bits in the ACPI registers. According 8158to 8159the ACPI specification, these bits should be preserved when writing the 8160registers via a read/modify/write cycle. There are 3 bits preserved in 8161this 8162manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 8163 8164Implemented the initial deployment of new OSL mutex interfaces. Since 8165some 8166host operating systems have separate mutex and semaphore objects, this 8167feature was requested. The base code now uses mutexes (and the new mutex 8168interfaces) wherever a binary semaphore was used previously. However, for 8169the current release, the mutex interfaces are defined as macros to map 8170them 8171to the existing semaphore interfaces. Therefore, no OSL changes are 8172required 8173at this time. (See acpiosxf.h) 8174 8175Fixed several problems with the support for the control method SyncLevel 8176parameter. The SyncLevel now works according to the ACPI specification 8177and 8178in concert with the Mutex SyncLevel parameter, since the current 8179SyncLevel 8180is a property of the executing thread. Mutual exclusion for control 8181methods 8182is now implemented with a mutex instead of a semaphore. 8183 8184Fixed three instances of the use of the C shift operator in the bitfield 8185support code (exfldio.c) to avoid the use of a shift value larger than 8186the 8187target data width. The behavior of C compilers is undefined in this case 8188and 8189can cause unpredictable results, and therefore the case must be detected 8190and 8191avoided. (Fiodor Suietov) 8192 8193Added an info message whenever an SSDT or OEM table is loaded dynamically 8194via the Load() or LoadTable() ASL operators. This should improve 8195debugging 8196capability since it will show exactly what tables have been loaded 8197(beyond 8198the tables present in the RSDT/XSDT.) 8199 8200Example Code and Data Size: These are the sizes for the OS-independent 8201acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8202debug version of the code includes the debug output trace mechanism and 8203has 8204a much larger code and data size. 8205 8206 Previous Release: 8207 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8208 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8209 Current Release: 8210 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8211 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8212 8213 82142) iASL Compiler/Disassembler and Tools: 8215 8216No changes for this release. 8217 8218---------------------------------------- 821908 June 2006. Summary of changes for version 20060608: 8220 82211) ACPI CA Core Subsystem: 8222 8223Converted the locking mutex used for the ACPI hardware to a spinlock. 8224This 8225change should eliminate all problems caused by attempting to acquire a 8226semaphore at interrupt level, and it means that all ACPICA external 8227interfaces that directly access the ACPI hardware can be safely called 8228from 8229interrupt level. OSL code that implements the semaphore interfaces should 8230be 8231able to eliminate any workarounds for being called at interrupt level. 8232 8233Fixed a regression introduced in 20060526 where the ACPI device 8234initialization could be prematurely aborted with an AE_NOT_FOUND if a 8235device 8236did not have an optional _INI method. 8237 8238Fixed an IndexField issue where a write to the Data Register should be 8239limited in size to the AccessSize (width) of the IndexField itself. (BZ 8240433, 8241Fiodor Suietov) 8242 8243Fixed problem reports (Valery Podrezov) integrated: 8244- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 8245 8246Fixed problem reports (Fiodor Suietov) integrated: 8247- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 8248 8249Removed four global mutexes that were obsolete and were no longer being 8250used. 8251 8252Example Code and Data Size: These are the sizes for the OS-independent 8253acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8254debug version of the code includes the debug output trace mechanism and 8255has 8256a much larger code and data size. 8257 8258 Previous Release: 8259 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8260 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8261 Current Release: 8262 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8263 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8264 8265 82662) iASL Compiler/Disassembler and Tools: 8267 8268Fixed a fault when using -g option (get tables from registry) on Windows 8269machines. 8270 8271Fixed problem reports integrated: 8272- Generate error if CreateField NumBits parameter is zero. (BZ 405) 8273- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 8274Suietov) 8275- Global table revision override (-r) is ignored (BZ 413) 8276 8277---------------------------------------- 827826 May 2006. Summary of changes for version 20060526: 8279 82801) ACPI CA Core Subsystem: 8281 8282Restructured, flattened, and simplified the internal interfaces for 8283namespace object evaluation - resulting in smaller code, less CPU stack 8284use, 8285and fewer interfaces. (With assistance from Mikhail Kouzmich) 8286 8287Fixed a problem with the CopyObject operator where the first parameter 8288was 8289not typed correctly for the parser, interpreter, compiler, and 8290disassembler. 8291Caused various errors and unexpected behavior. 8292 8293Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 8294produced incorrect results with some C compilers. Since the behavior of C 8295compilers when the shift value is larger than the datatype width is 8296apparently not well defined, the interpreter now detects this condition 8297and 8298simply returns zero as expected in all such cases. (BZ 395) 8299 8300Fixed problem reports (Valery Podrezov) integrated: 8301- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 8302- Allow interpreter to handle nested method declarations (BZ 5361) 8303 8304Fixed problem reports (Fiodor Suietov) integrated: 8305- AcpiTerminate doesn't free debug memory allocation list objects (BZ 8306355) 8307- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 8308356) 8309- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 8310- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 8311- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 8312- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 8313- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 8314- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 8315- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 8316365) 8317- Status of the Global Initialization Handler call not used (BZ 366) 8318- Incorrect object parameter to Global Initialization Handler (BZ 367) 8319 8320Example Code and Data Size: These are the sizes for the OS-independent 8321acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8322debug version of the code includes the debug output trace mechanism and 8323has 8324a much larger code and data size. 8325 8326 Previous Release: 8327 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8328 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8329 Current Release: 8330 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8331 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8332 8333 83342) iASL Compiler/Disassembler and Tools: 8335 8336Modified the parser to allow the names IO, DMA, and IRQ to be used as 8337namespace identifiers with no collision with existing resource descriptor 8338macro names. This provides compatibility with other ASL compilers and is 8339most useful for disassembly/recompilation of existing tables without 8340parse 8341errors. (With assistance from Thomas Renninger) 8342 8343Disassembler: fixed an incorrect disassembly problem with the 8344DataTableRegion and CopyObject operators. Fixed a possible fault during 8345disassembly of some Alias operators. 8346 8347---------------------------------------- 834812 May 2006. Summary of changes for version 20060512: 8349 83501) ACPI CA Core Subsystem: 8351 8352Replaced the AcpiOsQueueForExecution interface with a new interface named 8353AcpiOsExecute. The major difference is that the new interface does not 8354have 8355a Priority parameter, this appeared to be useless and has been replaced 8356by 8357a 8358Type parameter. The Type tells the host what type of execution is being 8359requested, such as global lock handler, notify handler, GPE handler, etc. 8360This allows the host to queue and execute the request as appropriate for 8361the 8362request type, possibly using different work queues and different 8363priorities 8364for the various request types. This enables fixes for multithreading 8365deadlock problems such as BZ #5534, and will require changes to all 8366existing 8367OS interface layers. (Alexey Starikovskiy and Bob Moore) 8368 8369Fixed a possible memory leak associated with the support for the so- 8370called 8371"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 8372Suietov) 8373 8374Fixed a problem with the Load() operator where a table load from an 8375operation region could overwrite an internal table buffer by up to 7 8376bytes 8377and cause alignment faults on IPF systems. (With assistance from Luming 8378Yu) 8379 8380Example Code and Data Size: These are the sizes for the OS-independent 8381acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8382debug version of the code includes the debug output trace mechanism and 8383has 8384a much larger code and data size. 8385 8386 Previous Release: 8387 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8388 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8389 Current Release: 8390 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8391 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8392 8393 8394 83952) iASL Compiler/Disassembler and Tools: 8396 8397Disassembler: Implemented support to cross reference the internal 8398namespace 8399and automatically generate ASL External() statements for symbols not 8400defined 8401within the current table being disassembled. This will simplify the 8402disassembly and recompilation of interdependent tables such as SSDTs 8403since 8404these statements will no longer have to be added manually. 8405 8406Disassembler: Implemented experimental support to automatically detect 8407invocations of external control methods and generate appropriate 8408External() 8409statements. This is problematic because the AML cannot be correctly 8410parsed 8411until the number of arguments for each control method is known. 8412Currently, 8413standalone method invocations and invocations as the source operand of a 8414Store() statement are supported. 8415 8416Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 8417LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 8418LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 8419more readable and likely closer to the original ASL source. 8420 8421---------------------------------------- 842221 April 2006. Summary of changes for version 20060421: 8423 84241) ACPI CA Core Subsystem: 8425 8426Removed a device initialization optimization introduced in 20051216 where 8427the _STA method was not run unless an _INI was also present for the same 8428device. This optimization could cause problems because it could allow 8429_INI 8430methods to be run within a not-present device subtree. (If a not-present 8431device had no _INI, _STA would not be run, the not-present status would 8432not 8433be discovered, and the children of the device would be incorrectly 8434traversed.) 8435 8436Implemented a new _STA optimization where namespace subtrees that do not 8437contain _INI are identified and ignored during device initialization. 8438Selectively running _STA can significantly improve boot time on large 8439machines (with assistance from Len Brown.) 8440 8441Implemented support for the device initialization case where the returned 8442_STA flags indicate a device not-present but functioning. In this case, 8443_INI 8444is not run, but the device children are examined for presence, as per the 8445ACPI specification. 8446 8447Implemented an additional change to the IndexField support in order to 8448conform to MS behavior. The value written to the Index Register is not 8449simply a byte offset, it is a byte offset in units of the access width of 8450the parent Index Field. (Fiodor Suietov) 8451 8452Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 8453interface is called during the creation of all AML operation regions, and 8454allows the host OS to exert control over what addresses it will allow the 8455AML code to access. Operation Regions whose addresses are disallowed will 8456cause a runtime exception when they are actually accessed (will not 8457affect 8458or abort table loading.) See oswinxf or osunixxf for an example 8459implementation. 8460 8461Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 8462interface allows the host OS to match the various "optional" 8463interface/behavior strings for the _OSI predefined control method as 8464appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 8465for an example implementation. 8466 8467Restructured and corrected various problems in the exception handling 8468code 8469paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 8470(with assistance from Takayoshi Kochi.) 8471 8472Modified the Linux source converter to ignore quoted string literals 8473while 8474converting identifiers from mixed to lower case. This will correct 8475problems 8476with the disassembler and other areas where such strings must not be 8477modified. 8478 8479The ACPI_FUNCTION_* macros no longer require quotes around the function 8480name. This allows the Linux source converter to convert the names, now 8481that 8482the converter ignores quoted strings. 8483 8484Example Code and Data Size: These are the sizes for the OS-independent 8485acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8486debug version of the code includes the debug output trace mechanism and 8487has 8488a much larger code and data size. 8489 8490 Previous Release: 8491 8492 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8493 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8494 Current Release: 8495 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8496 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8497 8498 84992) iASL Compiler/Disassembler and Tools: 8500 8501Implemented 3 new warnings for iASL, and implemented multiple warning 8502levels 8503(w2 flag). 8504 85051) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 8506not 8507WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 8508check for the possible timeout, a warning is issued. 8509 85102) Useless operators: If an ASL operator does not specify an optional 8511target 8512operand and it also does not use the function return value from the 8513operator, a warning is issued since the operator effectively does 8514nothing. 8515 85163) Unreferenced objects: If a namespace object is created, but never 8517referenced, a warning is issued. This is a warning level 2 since there 8518are 8519cases where this is ok, such as when a secondary table is loaded that 8520uses 8521the unreferenced objects. Even so, care is taken to only flag objects 8522that 8523don't look like they will ever be used. For example, the reserved methods 8524(starting with an underscore) are usually not referenced because it is 8525expected that the OS will invoke them. 8526 8527---------------------------------------- 852831 March 2006. Summary of changes for version 20060331: 8529 85301) ACPI CA Core Subsystem: 8531 8532Implemented header file support for the following additional ACPI tables: 8533ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 8534support, 8535all current and known ACPI tables are now defined in the ACPICA headers 8536and 8537are available for use by device drivers and other software. 8538 8539Implemented support to allow tables that contain ACPI names with invalid 8540characters to be loaded. Previously, this would cause the table load to 8541fail, but since there are several known cases of such tables on existing 8542machines, this change was made to enable ACPI support for them. Also, 8543this 8544matches the behavior of the Microsoft ACPI implementation. 8545 8546Fixed a couple regressions introduced during the memory optimization in 8547the 854820060317 release. The namespace node definition required additional 8549reorganization and an internal datatype that had been changed to 8-bit 8550was 8551restored to 32-bit. (Valery Podrezov) 8552 8553Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 8554could be passed through to AcpiOsReleaseObject which is unexpected. Such 8555null pointers are now trapped and ignored, matching the behavior of the 8556previous implementation before the deployment of AcpiOsReleaseObject. 8557(Valery Podrezov, Fiodor Suietov) 8558 8559Fixed a memory mapping leak during the deletion of a SystemMemory 8560operation 8561region where a cached memory mapping was not deleted. This became a 8562noticeable problem for operation regions that are defined within 8563frequently 8564used control methods. (Dana Meyers) 8565 8566Reorganized the ACPI table header files into two main files: one for the 8567ACPI tables consumed by the ACPICA core, and another for the 8568miscellaneous 8569ACPI tables that are consumed by the drivers and other software. The 8570various 8571FADT definitions were merged into one common section and three different 8572tables (ACPI 1.0, 1.0+, and 2.0) 8573 8574Example Code and Data Size: These are the sizes for the OS-independent 8575acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8576debug version of the code includes the debug output trace mechanism and 8577has 8578a much larger code and data size. 8579 8580 Previous Release: 8581 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8582 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8583 Current Release: 8584 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8585 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8586 8587 85882) iASL Compiler/Disassembler and Tools: 8589 8590Disassembler: Implemented support to decode and format all non-AML ACPI 8591tables (tables other than DSDTs and SSDTs.) This includes the new tables 8592added to the ACPICA headers, therefore all current and known ACPI tables 8593are 8594supported. 8595 8596Disassembler: The change to allow ACPI names with invalid characters also 8597enables the disassembly of such tables. Invalid characters within names 8598are 8599changed to '*' to make the name printable; the iASL compiler will still 8600generate an error for such names, however, since this is an invalid ACPI 8601character. 8602 8603Implemented an option for AcpiXtract (-a) to extract all tables found in 8604the 8605input file. The default invocation extracts only the DSDTs and SSDTs. 8606 8607Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 8608makefile for the AcpiXtract utility. 8609 8610---------------------------------------- 861117 March 2006. Summary of changes for version 20060317: 8612 86131) ACPI CA Core Subsystem: 8614 8615Implemented the use of a cache object for all internal namespace nodes. 8616Since there are about 1000 static nodes in a typical system, this will 8617decrease memory use for cache implementations that minimize per- 8618allocation 8619overhead (such as a slab allocator.) 8620 8621Removed the reference count mechanism for internal namespace nodes, since 8622it 8623was deemed unnecessary. This reduces the size of each namespace node by 8624about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 8625case, 8626and 32 bytes for the 64-bit case. 8627 8628Optimized several internal data structures to reduce object size on 64- 8629bit 8630platforms by packing data within the 64-bit alignment. This includes the 8631frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 8632instances corresponding to the namespace objects. 8633 8634Added two new strings for the predefined _OSI method: "Windows 2001.1 8635SP1" 8636and "Windows 2006". 8637 8638Split the allocation tracking mechanism out to a separate file, from 8639utalloc.c to uttrack.c. This mechanism appears to be only useful for 8640application-level code. Kernels may wish to not include uttrack.c in 8641distributions. 8642 8643Removed all remnants of the obsolete ACPI_REPORT_* macros and the 8644associated 8645code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 8646macros.) 8647 8648Code and Data Size: These are the sizes for the acpica.lib produced by 8649the 8650Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8651ACPI 8652driver or OSPM code. The debug version of the code includes the debug 8653output 8654trace mechanism and has a much larger code and data size. Note that these 8655values will vary depending on the efficiency of the compiler and the 8656compiler options used during generation. 8657 8658 Previous Release: 8659 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8660 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8661 Current Release: 8662 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8663 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8664 8665 86662) iASL Compiler/Disassembler and Tools: 8667 8668Implemented an ANSI C version of the acpixtract utility. This version 8669will 8670automatically extract the DSDT and all SSDTs from the input acpidump text 8671file and dump the binary output to separate files. It can also display a 8672summary of the input file including the headers for each table found and 8673will extract any single ACPI table, with any signature. (See 8674source/tools/acpixtract) 8675 8676---------------------------------------- 867710 March 2006. Summary of changes for version 20060310: 8678 86791) ACPI CA Core Subsystem: 8680 8681Tagged all external interfaces to the subsystem with the new 8682ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 8683assist 8684kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 8685macro. The default definition is NULL. 8686 8687Added the ACPI_THREAD_ID type for the return value from 8688AcpiOsGetThreadId. 8689This allows the host to define this as necessary to simplify kernel 8690integration. The default definition is ACPI_NATIVE_UINT. 8691 8692Fixed two interpreter problems related to error processing, the deletion 8693of 8694objects, and placing invalid pointers onto the internal operator result 8695stack. BZ 6028, 6151 (Valery Podrezov) 8696 8697Increased the reference count threshold where a warning is emitted for 8698large 8699reference counts in order to eliminate unnecessary warnings on systems 8700with 8701large namespaces (especially 64-bit.) Increased the value from 0x400 to 87020x800. 8703 8704Due to universal disagreement as to the meaning of the 'c' in the 8705calloc() 8706function, the ACPI_MEM_CALLOCATE macro has been renamed to 8707ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 8708ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 8709ACPI_FREE. 8710 8711Code and Data Size: These are the sizes for the acpica.lib produced by 8712the 8713Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8714ACPI 8715driver or OSPM code. The debug version of the code includes the debug 8716output 8717trace mechanism and has a much larger code and data size. Note that these 8718values will vary depending on the efficiency of the compiler and the 8719compiler options used during generation. 8720 8721 Previous Release: 8722 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8723 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8724 Current Release: 8725 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8726 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8727 8728 87292) iASL Compiler/Disassembler: 8730 8731Disassembler: implemented support for symbolic resource descriptor 8732references. If a CreateXxxxField operator references a fixed offset 8733within 8734a 8735resource descriptor, a name is assigned to the descriptor and the offset 8736is 8737translated to the appropriate resource tag and pathname. The addition of 8738this support brings the disassembled code very close to the original ASL 8739source code and helps eliminate run-time errors when the disassembled 8740code 8741is modified (and recompiled) in such a way as to invalidate the original 8742fixed offsets. 8743 8744Implemented support for a Descriptor Name as the last parameter to the 8745ASL 8746Register() macro. This parameter was inadvertently left out of the ACPI 8747specification, and will be added for ACPI 3.0b. 8748 8749Fixed a problem where the use of the "_OSI" string (versus the full path 8750"\_OSI") caused an internal compiler error. ("No back ptr to op") 8751 8752Fixed a problem with the error message that occurs when an invalid string 8753is 8754used for a _HID object (such as one with an embedded asterisk: 8755"*PNP010A".) 8756The correct message is now displayed. 8757 8758---------------------------------------- 875917 February 2006. Summary of changes for version 20060217: 8760 87611) ACPI CA Core Subsystem: 8762 8763Implemented a change to the IndexField support to match the behavior of 8764the 8765Microsoft AML interpreter. The value written to the Index register is now 8766a 8767byte offset, no longer an index based upon the width of the Data 8768register. 8769This should fix IndexField problems seen on some machines where the Data 8770register is not exactly one byte wide. The ACPI specification will be 8771clarified on this point. 8772 8773Fixed a problem where several resource descriptor types could overrun the 8774internal descriptor buffer due to size miscalculation: VendorShort, 8775VendorLong, and Interrupt. This was noticed on IA64 machines, but could 8776affect all platforms. 8777 8778Fixed a problem where individual resource descriptors were misaligned 8779within 8780the internal buffer, causing alignment faults on IA64 platforms. 8781 8782Code and Data Size: These are the sizes for the acpica.lib produced by 8783the 8784Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8785ACPI 8786driver or OSPM code. The debug version of the code includes the debug 8787output 8788trace mechanism and has a much larger code and data size. Note that these 8789values will vary depending on the efficiency of the compiler and the 8790compiler options used during generation. 8791 8792 Previous Release: 8793 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8794 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8795 Current Release: 8796 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8797 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8798 8799 88002) iASL Compiler/Disassembler: 8801 8802Implemented support for new reserved names: _WDG and _WED are Microsoft 8803extensions for Windows Instrumentation Management, _TDL is a new ACPI- 8804defined method (Throttling Depth Limit.) 8805 8806Fixed a problem where a zero-length VendorShort or VendorLong resource 8807descriptor was incorrectly emitted as a descriptor of length one. 8808 8809---------------------------------------- 881010 February 2006. Summary of changes for version 20060210: 8811 88121) ACPI CA Core Subsystem: 8813 8814Removed a couple of extraneous ACPI_ERROR messages that appeared during 8815normal execution. These became apparent after the conversion from 8816ACPI_DEBUG_PRINT. 8817 8818Fixed a problem where the CreateField operator could hang if the BitIndex 8819or 8820NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 8821 8822Fixed a problem where a DeRefOf operation on a buffer object incorrectly 8823failed with an exception. This also fixes a couple of related RefOf and 8824DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 8825 8826Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 8827of 8828AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 8829BZ 88305480) 8831 8832Implemented a memory cleanup at the end of the execution of each 8833iteration 8834of an AML While() loop, preventing the accumulation of outstanding 8835objects. 8836(Valery Podrezov, BZ 5427) 8837 8838Eliminated a chunk of duplicate code in the object resolution code. 8839(Valery 8840Podrezov, BZ 5336) 8841 8842Fixed several warnings during the 64-bit code generation. 8843 8844The AcpiSrc source code conversion tool now inserts one line of 8845whitespace 8846after an if() statement that is followed immediately by a comment, 8847improving 8848readability of the Linux code. 8849 8850Code and Data Size: The current and previous library sizes for the core 8851subsystem are shown below. These are the code and data sizes for the 8852acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8853These 8854values do not include any ACPI driver or OSPM code. The debug version of 8855the 8856code includes the debug output trace mechanism and has a much larger code 8857and data size. Note that these values will vary depending on the 8858efficiency 8859of the compiler and the compiler options used during generation. 8860 8861 Previous Release: 8862 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8863 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8864 Current Release: 8865 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8866 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8867 8868 88692) iASL Compiler/Disassembler: 8870 8871Fixed a problem with the disassembly of a BankField operator with a 8872complex 8873expression for the BankValue parameter. 8874 8875---------------------------------------- 887627 January 2006. Summary of changes for version 20060127: 8877 88781) ACPI CA Core Subsystem: 8879 8880Implemented support in the Resource Manager to allow unresolved 8881namestring 8882references within resource package objects for the _PRT method. This 8883support 8884is in addition to the previously implemented unresolved reference support 8885within the AML parser. If the interpreter slack mode is enabled, these 8886unresolved references will be passed through to the caller as a NULL 8887package 8888entry. 8889 8890Implemented and deployed new macros and functions for error and warning 8891messages across the subsystem. These macros are simpler and generate less 8892code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 8893ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 8894macros remain defined to allow ACPI drivers time to migrate to the new 8895macros. 8896 8897Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 8898the 8899Acquire/Release Lock OSL interfaces. 8900 8901Fixed a problem where Alias ASL operators are sometimes not correctly 8902resolved, in both the interpreter and the iASL compiler. 8903 8904Fixed several problems with the implementation of the 8905ConcatenateResTemplate 8906ASL operator. As per the ACPI specification, zero length buffers are now 8907treated as a single EndTag. One-length buffers always cause a fatal 8908exception. Non-zero length buffers that do not end with a full 2-byte 8909EndTag 8910cause a fatal exception. 8911 8912Fixed a possible structure overwrite in the AcpiGetObjectInfo external 8913interface. (With assistance from Thomas Renninger) 8914 8915Code and Data Size: The current and previous library sizes for the core 8916subsystem are shown below. These are the code and data sizes for the 8917acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8918These 8919values do not include any ACPI driver or OSPM code. The debug version of 8920the 8921code includes the debug output trace mechanism and has a much larger code 8922and data size. Note that these values will vary depending on the 8923efficiency 8924of the compiler and the compiler options used during generation. 8925 8926 Previous Release: 8927 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8928 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8929 Current Release: 8930 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8931 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8932 8933 89342) iASL Compiler/Disassembler: 8935 8936Fixed an internal error that was generated for any forward references to 8937ASL 8938Alias objects. 8939 8940---------------------------------------- 894113 January 2006. Summary of changes for version 20060113: 8942 89431) ACPI CA Core Subsystem: 8944 8945Added 2006 copyright to all module headers and signons. This affects 8946virtually every file in the ACPICA core subsystem, iASL compiler, and the 8947utilities. 8948 8949Enhanced the ACPICA error reporting in order to simplify user migration 8950to 8951the non-debug version of ACPICA. Replaced all instances of the 8952ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 8953debug 8954levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 8955respectively. This preserves all error and warning messages in the non- 8956debug 8957version of the ACPICA code (this has been referred to as the "debug lite" 8958option.) Over 200 cases were converted to create a total of over 380 8959error/warning messages across the ACPICA code. This increases the code 8960and 8961data size of the default non-debug version of the code somewhat (about 896213K), 8963but all error/warning reporting may be disabled if desired (and code 8964eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 8965configuration option. The size of the debug version of ACPICA remains 8966about 8967the same. 8968 8969Fixed a memory leak within the AML Debugger "Set" command. One object was 8970not properly deleted for every successful invocation of the command. 8971 8972Code and Data Size: The current and previous library sizes for the core 8973subsystem are shown below. These are the code and data sizes for the 8974acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8975These 8976values do not include any ACPI driver or OSPM code. The debug version of 8977the 8978code includes the debug output trace mechanism and has a much larger code 8979and data size. Note that these values will vary depending on the 8980efficiency 8981of the compiler and the compiler options used during generation. 8982 8983 Previous Release: 8984 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8985 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8986 Current Release: 8987 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8988 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8989 8990 89912) iASL Compiler/Disassembler: 8992 8993The compiler now officially supports the ACPI 3.0a specification that was 8994released on December 30, 2005. (Specification is available at 8995www.acpi.info) 8996 8997---------------------------------------- 899816 December 2005. Summary of changes for version 20051216: 8999 90001) ACPI CA Core Subsystem: 9001 9002Implemented optional support to allow unresolved names within ASL Package 9003objects. A null object is inserted in the package when a named reference 9004cannot be located in the current namespace. Enabled via the interpreter 9005slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 9006machines 9007that contain such code. 9008 9009Implemented an optimization to the initialization sequence that can 9010improve 9011boot time. During ACPI device initialization, the _STA method is now run 9012if 9013and only if the _INI method exists. The _STA method is used to determine 9014if 9015the device is present; An _INI can only be run if _STA returns present, 9016but 9017it is a waste of time to run the _STA method if the _INI does not exist. 9018(Prototype and assistance from Dong Wei) 9019 9020Implemented use of the C99 uintptr_t for the pointer casting macros if it 9021is 9022available in the current compiler. Otherwise, the default (void *) cast 9023is 9024used as before. 9025 9026Fixed some possible memory leaks found within the execution path of the 9027Break, Continue, If, and CreateField operators. (Valery Podrezov) 9028 9029Fixed a problem introduced in the 20051202 release where an exception is 9030generated during method execution if a control method attempts to declare 9031another method. 9032 9033Moved resource descriptor string constants that are used by both the AML 9034disassembler and AML debugger to the common utilities directory so that 9035these components are independent. 9036 9037Implemented support in the AcpiExec utility (-e switch) to globally 9038ignore 9039exceptions during control method execution (method is not aborted.) 9040 9041Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 9042generation. 9043 9044Code and Data Size: The current and previous library sizes for the core 9045subsystem are shown below. These are the code and data sizes for the 9046acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9047These 9048values do not include any ACPI driver or OSPM code. The debug version of 9049the 9050code includes the debug output trace mechanism and has a much larger code 9051and data size. Note that these values will vary depending on the 9052efficiency 9053of the compiler and the compiler options used during generation. 9054 9055 Previous Release: 9056 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9057 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9058 Current Release: 9059 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9060 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9061 9062 90632) iASL Compiler/Disassembler: 9064 9065Fixed a problem where a CPU stack overflow fault could occur if a 9066recursive 9067method call was made from within a Return statement. 9068 9069---------------------------------------- 907002 December 2005. Summary of changes for version 20051202: 9071 90721) ACPI CA Core Subsystem: 9073 9074Modified the parsing of control methods to no longer create namespace 9075objects during the first pass of the parse. Objects are now created only 9076during the execute phase, at the moment the namespace creation operator 9077is 9078encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 9079This 9080should eliminate ALREADY_EXISTS exceptions seen on some machines where 9081reentrant control methods are protected by an AML mutex. The mutex will 9082now 9083correctly block multiple threads from attempting to create the same 9084object 9085more than once. 9086 9087Increased the number of available Owner Ids for namespace object tracking 9088from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 9089on 9090some machines with a large number of ACPI tables (either static or 9091dynamic). 9092 9093Fixed a problem with the AcpiExec utility where a fault could occur when 9094the 9095-b switch (batch mode) is used. 9096 9097Enhanced the namespace dump routine to output the owner ID for each 9098namespace object. 9099 9100Code and Data Size: The current and previous library sizes for the core 9101subsystem are shown below. These are the code and data sizes for the 9102acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9103These 9104values do not include any ACPI driver or OSPM code. The debug version of 9105the 9106code includes the debug output trace mechanism and has a much larger code 9107and data size. Note that these values will vary depending on the 9108efficiency 9109of the compiler and the compiler options used during generation. 9110 9111 Previous Release: 9112 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9113 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9114 Current Release: 9115 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9116 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9117 9118 91192) iASL Compiler/Disassembler: 9120 9121Fixed a parse error during compilation of certain Switch/Case constructs. 9122To 9123simplify the parse, the grammar now allows for multiple Default 9124statements 9125and this error is now detected and flagged during the analysis phase. 9126 9127Disassembler: The disassembly now includes the contents of the original 9128table header within a comment at the start of the file. This includes the 9129name and version of the original ASL compiler. 9130 9131---------------------------------------- 913217 November 2005. Summary of changes for version 20051117: 9133 91341) ACPI CA Core Subsystem: 9135 9136Fixed a problem in the AML parser where the method thread count could be 9137decremented below zero if any errors occurred during the method parse 9138phase. 9139This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 9140machines. 9141This also fixed a related regression with the mechanism that detects and 9142corrects methods that cannot properly handle reentrancy (related to the 9143deployment of the new OwnerId mechanism.) 9144 9145Eliminated the pre-parsing of control methods (to detect errors) during 9146table load. Related to the problem above, this was causing unwind issues 9147if 9148any errors occurred during the parse, and it seemed to be overkill. A 9149table 9150load should not be aborted if there are problems with any single control 9151method, thus rendering this feature rather pointless. 9152 9153Fixed a problem with the new table-driven resource manager where an 9154internal 9155buffer overflow could occur for small resource templates. 9156 9157Implemented a new external interface, AcpiGetVendorResource. This 9158interface 9159will find and return a vendor-defined resource descriptor within a _CRS 9160or 9161_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 9162Helgaas. 9163 9164Removed the length limit (200) on string objects as per the upcoming ACPI 91653.0A specification. This affects the following areas of the interpreter: 91661) 9167any implicit conversion of a Buffer to a String, 2) a String object 9168result 9169of the ASL Concatentate operator, 3) the String object result of the ASL 9170ToString operator. 9171 9172Fixed a problem in the Windows OS interface layer (OSL) where a 9173WAIT_FOREVER 9174on a semaphore object would incorrectly timeout. This allows the 9175multithreading features of the AcpiExec utility to work properly under 9176Windows. 9177 9178Updated the Linux makefiles for the iASL compiler and AcpiExec to include 9179the recently added file named "utresrc.c". 9180 9181Code and Data Size: The current and previous library sizes for the core 9182subsystem are shown below. These are the code and data sizes for the 9183acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9184These 9185values do not include any ACPI driver or OSPM code. The debug version of 9186the 9187code includes the debug output trace mechanism and has a much larger code 9188and data size. Note that these values will vary depending on the 9189efficiency 9190of the compiler and the compiler options used during generation. 9191 9192 Previous Release: 9193 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9194 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9195 Current Release: 9196 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9197 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9198 9199 92002) iASL Compiler/Disassembler: 9201 9202Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 9203specification. For the iASL compiler, this means that string literals 9204within 9205the source ASL can be of any length. 9206 9207Enhanced the listing output to dump the AML code for resource descriptors 9208immediately after the ASL code for each descriptor, instead of in a block 9209at 9210the end of the entire resource template. 9211 9212Enhanced the compiler debug output to dump the entire original parse tree 9213constructed during the parse phase, before any transforms are applied to 9214the 9215tree. The transformed tree is dumped also. 9216 9217---------------------------------------- 921802 November 2005. Summary of changes for version 20051102: 9219 92201) ACPI CA Core Subsystem: 9221 9222Modified the subsystem initialization sequence to improve GPE support. 9223The 9224GPE initialization has been split into two parts in order to defer 9225execution 9226of the _PRW methods (Power Resources for Wake) until after the hardware 9227is 9228fully initialized and the SCI handler is installed. This allows the _PRW 9229methods to access fields protected by the Global Lock. This will fix 9230systems 9231where a NO_GLOBAL_LOCK exception has been seen during initialization. 9232 9233Converted the ACPI internal object disassemble and display code within 9234the 9235AML debugger to fully table-driven operation, reducing code size and 9236increasing maintainability. 9237 9238Fixed a regression with the ConcatenateResTemplate() ASL operator 9239introduced 9240in the 20051021 release. 9241 9242Implemented support for "local" internal ACPI object types within the 9243debugger "Object" command and the AcpiWalkNamespace external interfaces. 9244These local types include RegionFields, BankFields, IndexFields, Alias, 9245and 9246reference objects. 9247 9248Moved common AML resource handling code into a new file, "utresrc.c". 9249This 9250code is shared by both the Resource Manager and the AML Debugger. 9251 9252Code and Data Size: The current and previous library sizes for the core 9253subsystem are shown below. These are the code and data sizes for the 9254acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9255These 9256values do not include any ACPI driver or OSPM code. The debug version of 9257the 9258code includes the debug output trace mechanism and has a much larger code 9259and data size. Note that these values will vary depending on the 9260efficiency 9261of the compiler and the compiler options used during generation. 9262 9263 Previous Release: 9264 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9265 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9266 Current Release: 9267 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9268 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9269 9270 92712) iASL Compiler/Disassembler: 9272 9273Fixed a problem with very large initializer lists (more than 4000 9274elements) 9275for both Buffer and Package objects where the parse stack could overflow. 9276 9277Enhanced the pre-compile source code scan for non-ASCII characters to 9278ignore 9279characters within comment fields. The scan is now always performed and is 9280no 9281longer optional, detecting invalid characters within a source file 9282immediately rather than during the parse phase or later. 9283 9284Enhanced the ASL grammar definition to force early reductions on all 9285list- 9286style grammar elements so that the overall parse stack usage is greatly 9287reduced. This should improve performance and reduce the possibility of 9288parse 9289stack overflow. 9290 9291Eliminated all reduce/reduce conflicts in the iASL parser generation. 9292Also, 9293with the addition of a %expected statement, the compiler generates from 9294source with no warnings. 9295 9296Fixed a possible segment fault in the disassembler if the input filename 9297does not contain a "dot" extension (Thomas Renninger). 9298 9299---------------------------------------- 930021 October 2005. Summary of changes for version 20051021: 9301 93021) ACPI CA Core Subsystem: 9303 9304Implemented support for the EM64T and other x86-64 processors. This 9305essentially entails recognizing that these processors support non-aligned 9306memory transfers. Previously, all 64-bit processors were assumed to lack 9307hardware support for non-aligned transfers. 9308 9309Completed conversion of the Resource Manager to nearly full table-driven 9310operation. Specifically, the resource conversion code (convert AML to 9311internal format and the reverse) and the debug code to dump internal 9312resource descriptors are fully table-driven, reducing code and data size 9313and 9314improving maintainability. 9315 9316The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 9317word 9318on 64-bit processors instead of a fixed 32-bit word. (With assistance 9319from 9320Alexey Starikovskiy) 9321 9322Implemented support within the resource conversion code for the Type- 9323Specific byte within the various ACPI 3.0 *WordSpace macros. 9324 9325Fixed some issues within the resource conversion code for the type- 9326specific 9327flags for both Memory and I/O address resource descriptors. For Memory, 9328implemented support for the MTP and TTP flags. For I/O, split the TRS and 9329TTP flags into two separate fields. 9330 9331Code and Data Size: The current and previous library sizes for the core 9332subsystem are shown below. These are the code and data sizes for the 9333acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9334These 9335values do not include any ACPI driver or OSPM code. The debug version of 9336the 9337code includes the debug output trace mechanism and has a much larger code 9338and data size. Note that these values will vary depending on the 9339efficiency 9340of the compiler and the compiler options used during generation. 9341 9342 Previous Release: 9343 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9344 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9345 Current Release: 9346 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9347 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9348 9349 9350 93512) iASL Compiler/Disassembler: 9352 9353Relaxed a compiler restriction that disallowed a ResourceIndex byte if 9354the 9355corresponding ResourceSource string was not also present in a resource 9356descriptor declaration. This restriction caused problems with existing 9357AML/ASL code that includes the Index byte without the string. When such 9358AML 9359was disassembled, it could not be compiled without modification. Further, 9360the modified code created a resource template with a different size than 9361the 9362original, breaking code that used fixed offsets into the resource 9363template 9364buffer. 9365 9366Removed a recent feature of the disassembler to ignore a lone 9367ResourceIndex 9368byte. This byte is now emitted if present so that the exact AML can be 9369reproduced when the disassembled code is recompiled. 9370 9371Improved comments and text alignment for the resource descriptor code 9372emitted by the disassembler. 9373 9374Implemented disassembler support for the ACPI 3.0 AccessSize field within 9375a 9376Register() resource descriptor. 9377 9378---------------------------------------- 937930 September 2005. Summary of changes for version 20050930: 9380 93811) ACPI CA Core Subsystem: 9382 9383Completed a major overhaul of the Resource Manager code - specifically, 9384optimizations in the area of the AML/internal resource conversion code. 9385The 9386code has been optimized to simplify and eliminate duplicated code, CPU 9387stack 9388use has been decreased by optimizing function parameters and local 9389variables, and naming conventions across the manager have been 9390standardized 9391for clarity and ease of maintenance (this includes function, parameter, 9392variable, and struct/typedef names.) The update may force changes in some 9393driver code, depending on how resources are handled by the host OS. 9394 9395All Resource Manager dispatch and information tables have been moved to a 9396single location for clarity and ease of maintenance. One new file was 9397created, named "rsinfo.c". 9398 9399The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 9400guarantee that the argument is not evaluated twice, making them less 9401prone 9402to macro side-effects. However, since there exists the possibility of 9403additional stack use if a particular compiler cannot optimize them (such 9404as 9405in the debug generation case), the original macros are optionally 9406available. 9407Note that some invocations of the return_VALUE macro may now cause size 9408mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 9409to 9410eliminate these. (From Randy Dunlap) 9411 9412Implemented a new mechanism to enable debug tracing for individual 9413control 9414methods. A new external interface, AcpiDebugTrace, is provided to enable 9415this mechanism. The intent is to allow the host OS to easily enable and 9416disable tracing for problematic control methods. This interface can be 9417easily exposed to a user or debugger interface if desired. See the file 9418psxface.c for details. 9419 9420AcpiUtCallocate will now return a valid pointer if a length of zero is 9421specified - a length of one is used and a warning is issued. This matches 9422the behavior of AcpiUtAllocate. 9423 9424Code and Data Size: The current and previous library sizes for the core 9425subsystem are shown below. These are the code and data sizes for the 9426acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9427These 9428values do not include any ACPI driver or OSPM code. The debug version of 9429the 9430code includes the debug output trace mechanism and has a much larger code 9431and data size. Note that these values will vary depending on the 9432efficiency 9433of the compiler and the compiler options used during generation. 9434 9435 Previous Release: 9436 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9437 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9438 Current Release: 9439 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9440 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9441 9442 94432) iASL Compiler/Disassembler: 9444 9445A remark is issued if the effective compile-time length of a package or 9446buffer is zero. Previously, this was a warning. 9447 9448---------------------------------------- 944916 September 2005. Summary of changes for version 20050916: 9450 94511) ACPI CA Core Subsystem: 9452 9453Fixed a problem within the Resource Manager where support for the Generic 9454Register descriptor was not fully implemented. This descriptor is now 9455fully 9456recognized, parsed, disassembled, and displayed. 9457 9458Completely restructured the Resource Manager code to utilize table-driven 9459dispatch and lookup, eliminating many of the large switch() statements. 9460This 9461reduces overall subsystem code size and code complexity. Affects the 9462resource parsing and construction, disassembly, and debug dump output. 9463 9464Cleaned up and restructured the debug dump output for all resource 9465descriptors. Improved readability of the output and reduced code size. 9466 9467Fixed a problem where changes to internal data structures caused the 9468optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 9469 9470Code and Data Size: The current and previous library sizes for the core 9471subsystem are shown below. These are the code and data sizes for the 9472acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9473These 9474values do not include any ACPI driver or OSPM code. The debug version of 9475the 9476code includes the debug output trace mechanism and has a much larger code 9477and data size. Note that these values will vary depending on the 9478efficiency 9479of the compiler and the compiler options used during generation. 9480 9481 Previous Release: 9482 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9483 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9484 Current Release: 9485 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9486 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9487 9488 94892) iASL Compiler/Disassembler: 9490 9491Updated the disassembler to automatically insert an EndDependentFn() 9492macro 9493into the ASL stream if this macro is missing in the original AML code, 9494simplifying compilation of the resulting ASL module. 9495 9496Fixed a problem in the disassembler where a disassembled ResourceSource 9497string (within a large resource descriptor) was not surrounded by quotes 9498and 9499not followed by a comma, causing errors when the resulting ASL module was 9500compiled. Also, escape sequences within a ResourceSource string are now 9501handled correctly (especially "\\") 9502 9503---------------------------------------- 950402 September 2005. Summary of changes for version 20050902: 9505 95061) ACPI CA Core Subsystem: 9507 9508Fixed a problem with the internal Owner ID allocation and deallocation 9509mechanisms for control method execution and recursive method invocation. 9510This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 9511messages seen on some systems. Recursive method invocation depth is 9512currently limited to 255. (Alexey Starikovskiy) 9513 9514Completely eliminated all vestiges of support for the "module-level 9515executable code" until this support is fully implemented and debugged. 9516This 9517should eliminate the NO_RETURN_VALUE exceptions seen during table load on 9518some systems that invoke this support. 9519 9520Fixed a problem within the resource manager code where the transaction 9521flags 9522for a 64-bit address descriptor were handled incorrectly in the type- 9523specific flag byte. 9524 9525Consolidated duplicate code within the address descriptor resource 9526manager 9527code, reducing overall subsystem code size. 9528 9529Fixed a fault when using the AML debugger "disassemble" command to 9530disassemble individual control methods. 9531 9532Removed references to the "release_current" directory within the Unix 9533release package. 9534 9535Code and Data Size: The current and previous core subsystem library sizes 9536are shown below. These are the code and data sizes for the acpica.lib 9537produced by the Microsoft Visual C++ 6.0 compiler. These values do not 9538include any ACPI driver or OSPM code. The debug version of the code 9539includes 9540the debug output trace mechanism and has a much larger code and data 9541size. 9542Note that these values will vary depending on the efficiency of the 9543compiler 9544and the compiler options used during generation. 9545 9546 Previous Release: 9547 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9548 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9549 Current Release: 9550 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9551 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9552 9553 95542) iASL Compiler/Disassembler: 9555 9556Implemented an error check for illegal duplicate values in the interrupt 9557and 9558dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 9559Interrupt(). 9560 9561Implemented error checking for the Irq() and IrqNoFlags() macros to 9562detect 9563too many values in the interrupt list (16 max) and invalid values in the 9564list (range 0 - 15) 9565 9566The maximum length string literal within an ASL file is now restricted to 9567200 characters as per the ACPI specification. 9568 9569Fixed a fault when using the -ln option (generate namespace listing). 9570 9571Implemented an error check to determine if a DescriptorName within a 9572resource descriptor has already been used within the current scope. 9573 9574---------------------------------------- 957515 August 2005. Summary of changes for version 20050815: 9576 95771) ACPI CA Core Subsystem: 9578 9579Implemented a full bytewise compare to determine if a table load request 9580is 9581attempting to load a duplicate table. The compare is performed if the 9582table 9583signatures and table lengths match. This will allow different tables with 9584the same OEM Table ID and revision to be loaded - probably against the 9585ACPI 9586specification, but discovered in the field nonetheless. 9587 9588Added the changes.txt logfile to each of the zipped release packages. 9589 9590Code and Data Size: Current and previous core subsystem library sizes are 9591shown below. These are the code and data sizes for the acpica.lib 9592produced 9593by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9594any ACPI driver or OSPM code. The debug version of the code includes the 9595debug output trace mechanism and has a much larger code and data size. 9596Note 9597that these values will vary depending on the efficiency of the compiler 9598and 9599the compiler options used during generation. 9600 9601 Previous Release: 9602 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9603 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9604 Current Release: 9605 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9606 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9607 9608 96092) iASL Compiler/Disassembler: 9610 9611Fixed a problem where incorrect AML code could be generated for Package 9612objects if optimization is disabled (via the -oa switch). 9613 9614Fixed a problem with where incorrect AML code is generated for variable- 9615length packages when the package length is not specified and the number 9616of 9617initializer values is greater than 255. 9618 9619 9620---------------------------------------- 962129 July 2005. Summary of changes for version 20050729: 9622 96231) ACPI CA Core Subsystem: 9624 9625Implemented support to ignore an attempt to install/load a particular 9626ACPI 9627table more than once. Apparently there exists BIOS code that repeatedly 9628attempts to load the same SSDT upon certain events. With assistance from 9629Venkatesh Pallipadi. 9630 9631Restructured the main interface to the AML parser in order to correctly 9632handle all exceptional conditions. This will prevent leakage of the 9633OwnerId 9634resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 9635some 9636machines. With assistance from Alexey Starikovskiy. 9637 9638Support for "module level code" has been disabled in this version due to 9639a 9640number of issues that have appeared on various machines. The support can 9641be 9642enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 9643compilation. When the issues are fully resolved, the code will be enabled 9644by 9645default again. 9646 9647Modified the internal functions for debug print support to define the 9648FunctionName parameter as a (const char *) for compatibility with 9649compiler 9650built-in macros such as __FUNCTION__, etc. 9651 9652Linted the entire ACPICA source tree for both 32-bit and 64-bit. 9653 9654Implemented support to display an object count summary for the AML 9655Debugger 9656commands Object and Methods. 9657 9658Code and Data Size: Current and previous core subsystem library sizes are 9659shown below. These are the code and data sizes for the acpica.lib 9660produced 9661by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9662any ACPI driver or OSPM code. The debug version of the code includes the 9663debug output trace mechanism and has a much larger code and data size. 9664Note 9665that these values will vary depending on the efficiency of the compiler 9666and 9667the compiler options used during generation. 9668 9669 Previous Release: 9670 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9671 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9672 Current Release: 9673 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9674 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9675 9676 96772) iASL Compiler/Disassembler: 9678 9679Fixed a regression that appeared in the 20050708 version of the compiler 9680where an error message was inadvertently emitted for invocations of the 9681_OSI 9682reserved control method. 9683 9684---------------------------------------- 968508 July 2005. Summary of changes for version 20050708: 9686 96871) ACPI CA Core Subsystem: 9688 9689The use of the CPU stack in the debug version of the subsystem has been 9690considerably reduced. Previously, a debug structure was declared in every 9691function that used the debug macros. This structure has been removed in 9692favor of declaring the individual elements as parameters to the debug 9693functions. This reduces the cumulative stack use during nested execution 9694of 9695ACPI function calls at the cost of a small increase in the code size of 9696the 9697debug version of the subsystem. With assistance from Alexey Starikovskiy 9698and 9699Len Brown. 9700 9701Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 9702headers to define a macro that will return the current function name at 9703runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 9704by 9705the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 9706compiler-dependent header, the function name is saved on the CPU stack 9707(one 9708pointer per function.) This mechanism is used because apparently there 9709exists no standard ANSI-C defined macro that that returns the function 9710name. 9711 9712Redesigned and reimplemented the "Owner ID" mechanism used to track 9713namespace objects created/deleted by ACPI tables and control method 9714execution. A bitmap is now used to allocate and free the IDs, thus 9715solving 9716the wraparound problem present in the previous implementation. The size 9717of 9718the namespace node descriptor was reduced by 2 bytes as a result (Alexey 9719Starikovskiy). 9720 9721Removed the UINT32_BIT and UINT16_BIT types that were used for the 9722bitfield 9723flag definitions within the headers for the predefined ACPI tables. These 9724have been replaced by UINT8_BIT in order to increase the code portability 9725of 9726the subsystem. If the use of UINT8 remains a problem, we may be forced to 9727eliminate bitfields entirely because of a lack of portability. 9728 9729Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 9730This 9731is a frequently used function and this improvement increases the 9732performance 9733of the entire subsystem (Alexey Starikovskiy). 9734 9735Fixed several possible memory leaks and the inverse - premature object 9736deletion (Alexey Starikovskiy). 9737 9738Code and Data Size: Current and previous core subsystem library sizes are 9739shown below. These are the code and data sizes for the acpica.lib 9740produced 9741by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9742any ACPI driver or OSPM code. The debug version of the code includes the 9743debug output trace mechanism and has a much larger code and data size. 9744Note 9745that these values will vary depending on the efficiency of the compiler 9746and 9747the compiler options used during generation. 9748 9749 Previous Release: 9750 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9751 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9752 Current Release: 9753 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9754 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9755 9756---------------------------------------- 975724 June 2005. Summary of changes for version 20050624: 9758 97591) ACPI CA Core Subsystem: 9760 9761Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 9762the host-defined cache object. This allows the OSL implementation to 9763define 9764and type this object in any manner desired, simplifying the OSL 9765implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 9766Linux, and should be defined in the OS-specific header file for other 9767operating systems as required. 9768 9769Changed the interface to AcpiOsAcquireObject to directly return the 9770requested object as the function return (instead of ACPI_STATUS.) This 9771change was made for performance reasons, since this is the purpose of the 9772interface in the first place. AcpiOsAcquireObject is now similar to the 9773AcpiOsAllocate interface. 9774 9775Implemented a new AML debugger command named Businfo. This command 9776displays 9777information about all devices that have an associate _PRT object. The 9778_ADR, 9779_HID, _UID, and _CID are displayed for these devices. 9780 9781Modified the initialization sequence in AcpiInitializeSubsystem to call 9782the 9783OSL interface AcpiOslInitialize first, before any local initialization. 9784This 9785change was required because the global initialization now calls OSL 9786interfaces. 9787 9788Enhanced the Dump command to display the entire contents of Package 9789objects 9790(including all sub-objects and their values.) 9791 9792Restructured the code base to split some files because of size and/or 9793because the code logically belonged in a separate file. New files are 9794listed 9795below. All makefiles and project files included in the ACPI CA release 9796have 9797been updated. 9798 utilities/utcache.c /* Local cache interfaces */ 9799 utilities/utmutex.c /* Local mutex support */ 9800 utilities/utstate.c /* State object support */ 9801 interpreter/parser/psloop.c /* Main AML parse loop */ 9802 9803Code and Data Size: Current and previous core subsystem library sizes are 9804shown below. These are the code and data sizes for the acpica.lib 9805produced 9806by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9807any ACPI driver or OSPM code. The debug version of the code includes the 9808debug output trace mechanism and has a much larger code and data size. 9809Note 9810that these values will vary depending on the efficiency of the compiler 9811and 9812the compiler options used during generation. 9813 9814 Previous Release: 9815 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9816 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9817 Current Release: 9818 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9819 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9820 9821 98222) iASL Compiler/Disassembler: 9823 9824Fixed a regression introduced in version 20050513 where the use of a 9825Package 9826object within a Case() statement caused a compile time exception. The 9827original behavior has been restored (a Match() operator is emitted.) 9828 9829---------------------------------------- 983017 June 2005. Summary of changes for version 20050617: 9831 98321) ACPI CA Core Subsystem: 9833 9834Moved the object cache operations into the OS interface layer (OSL) to 9835allow 9836the host OS to handle these operations if desired (for example, the Linux 9837OSL will invoke the slab allocator). This support is optional; the 9838compile 9839time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 9840cache 9841code in the ACPI CA core. The new OSL interfaces are shown below. See 9842utalloc.c for an example implementation, and acpiosxf.h for the exact 9843interface definitions. With assistance from Alexey Starikovskiy. 9844 AcpiOsCreateCache 9845 AcpiOsDeleteCache 9846 AcpiOsPurgeCache 9847 AcpiOsAcquireObject 9848 AcpiOsReleaseObject 9849 9850Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 9851return 9852and restore a flags parameter. This fits better with many OS lock models. 9853Note: the current execution state (interrupt handler or not) is no longer 9854passed to these interfaces. If necessary, the OSL must determine this 9855state 9856by itself, a simple and fast operation. With assistance from Alexey 9857Starikovskiy. 9858 9859Fixed a problem in the ACPI table handling where a valid XSDT was assumed 9860present if the revision of the RSDP was 2 or greater. According to the 9861ACPI 9862specification, the XSDT is optional in all cases, and the table manager 9863therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 9864Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 9865contain 9866only the RSDT. 9867 9868Fixed an interpreter problem with the Mid() operator in the case of an 9869input 9870string where the resulting output string is of zero length. It now 9871correctly 9872returns a valid, null terminated string object instead of a string object 9873with a null pointer. 9874 9875Fixed a problem with the control method argument handling to allow a 9876store 9877to an Arg object that already contains an object of type Device. The 9878Device 9879object is now correctly overwritten. Previously, an error was returned. 9880 9881 9882Enhanced the debugger Find command to emit object values in addition to 9883the 9884found object pathnames. The output format is the same as the dump 9885namespace 9886command. 9887 9888Enhanced the debugger Set command. It now has the ability to set the 9889value 9890of any Named integer object in the namespace (Previously, only method 9891locals 9892and args could be set.) 9893 9894Code and Data Size: Current and previous core subsystem library sizes are 9895shown below. These are the code and data sizes for the acpica.lib 9896produced 9897by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9898any ACPI driver or OSPM code. The debug version of the code includes the 9899debug output trace mechanism and has a much larger code and data size. 9900Note 9901that these values will vary depending on the efficiency of the compiler 9902and 9903the compiler options used during generation. 9904 9905 Previous Release: 9906 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9907 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9908 Current Release: 9909 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9910 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9911 9912 99132) iASL Compiler/Disassembler: 9914 9915Fixed a regression in the disassembler where if/else/while constructs 9916were 9917output incorrectly. This problem was introduced in the previous release 9918(20050526). This problem also affected the single-step disassembly in the 9919debugger. 9920 9921Fixed a problem where compiling the reserved _OSI method would randomly 9922(but 9923rarely) produce compile errors. 9924 9925Enhanced the disassembler to emit compilable code in the face of 9926incorrect 9927AML resource descriptors. If the optional ResourceSourceIndex is present, 9928but the ResourceSource is not, do not emit the ResourceSourceIndex in the 9929disassembly. Otherwise, the resulting code cannot be compiled without 9930errors. 9931 9932---------------------------------------- 993326 May 2005. Summary of changes for version 20050526: 9934 99351) ACPI CA Core Subsystem: 9936 9937Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 9938the module level (not within a control method.) These opcodes are 9939executed 9940exactly once at the time the table is loaded. This type of code was legal 9941up 9942until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 9943in 9944order to provide backwards compatibility with earlier BIOS 9945implementations. 9946This eliminates the "Encountered executable code at module level" warning 9947that was previously generated upon detection of such code. 9948 9949Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 9950inadvertently be generated during the lookup of namespace objects in the 9951second pass parse of ACPI tables and control methods. It appears that 9952this 9953problem could occur during the resolution of forward references to 9954namespace 9955objects. 9956 9957Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 9958corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 9959allows the deadlock detection debug code to be compiled out in the normal 9960case, improving mutex performance (and overall subsystem performance) 9961considerably. 9962 9963Implemented a handful of miscellaneous fixes for possible memory leaks on 9964error conditions and error handling control paths. These fixes were 9965suggested by FreeBSD and the Coverity Prevent source code analysis tool. 9966 9967Added a check for a null RSDT pointer in AcpiGetFirmwareTable 9968(tbxfroot.c) 9969to prevent a fault in this error case. 9970 9971Code and Data Size: Current and previous core subsystem library sizes are 9972shown below. These are the code and data sizes for the acpica.lib 9973produced 9974by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9975any ACPI driver or OSPM code. The debug version of the code includes the 9976debug output trace mechanism and has a much larger code and data size. 9977Note 9978that these values will vary depending on the efficiency of the compiler 9979and 9980the compiler options used during generation. 9981 9982 Previous Release: 9983 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9984 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9985 Current Release: 9986 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9987 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9988 9989 99902) iASL Compiler/Disassembler: 9991 9992Implemented support to allow Type 1 and Type 2 ASL operators to appear at 9993the module level (not within a control method.) These operators will be 9994executed once at the time the table is loaded. This type of code was 9995legal 9996up until the release of ACPI 2.0B (2002) and is now supported by the iASL 9997compiler in order to provide backwards compatibility with earlier BIOS 9998ASL 9999code. 10000 10001The ACPI integer width (specified via the table revision ID or the -r 10002override, 32 or 64 bits) is now used internally during compile-time 10003constant 10004folding to ensure that constants are truncated to 32 bits if necessary. 10005Previously, the revision ID value was only emitted in the AML table 10006header. 10007 10008An error message is now generated for the Mutex and Method operators if 10009the 10010SyncLevel parameter is outside the legal range of 0 through 15. 10011 10012Fixed a problem with the Method operator ParameterTypes list handling 10013(ACPI 100143.0). Previously, more than 2 types or 2 arguments generated a syntax 10015error. 10016The actual underlying implementation of method argument typechecking is 10017still under development, however. 10018 10019---------------------------------------- 1002013 May 2005. Summary of changes for version 20050513: 10021 100221) ACPI CA Core Subsystem: 10023 10024Implemented support for PCI Express root bridges -- added support for 10025device 10026PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 10027 10028The interpreter now automatically truncates incoming 64-bit constants to 1002932 10030bits if currently executing out of a 32-bit ACPI table (Revision < 2). 10031This 10032also affects the iASL compiler constant folding. (Note: as per below, the 10033iASL compiler no longer allows 64-bit constants within 32-bit tables.) 10034 10035Fixed a problem where string and buffer objects with "static" pointers 10036(pointers to initialization data within an ACPI table) were not handled 10037consistently. The internal object copy operation now always copies the 10038data 10039to a newly allocated buffer, regardless of whether the source object is 10040static or not. 10041 10042Fixed a problem with the FromBCD operator where an implicit result 10043conversion was improperly performed while storing the result to the 10044target 10045operand. Since this is an "explicit conversion" operator, the implicit 10046conversion should never be performed on the output. 10047 10048Fixed a problem with the CopyObject operator where a copy to an existing 10049named object did not always completely overwrite the existing object 10050stored 10051at name. Specifically, a buffer-to-buffer copy did not delete the 10052existing 10053buffer. 10054 10055Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 10056and 10057structs for consistency. 10058 10059Code and Data Size: Current and previous core subsystem library sizes are 10060shown below. These are the code and data sizes for the acpica.lib 10061produced 10062by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10063any ACPI driver or OSPM code. The debug version of the code includes the 10064debug output trace mechanism and has a much larger code and data size. 10065Note 10066that these values will vary depending on the efficiency of the compiler 10067and 10068the compiler options used during generation. 10069 10070 Previous Release: 10071 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10072 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10073 Current Release: (Same sizes) 10074 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10075 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10076 10077 100782) iASL Compiler/Disassembler: 10079 10080The compiler now emits a warning if an attempt is made to generate a 64- 10081bit 10082integer constant from within a 32-bit ACPI table (Revision < 2). The 10083integer 10084is truncated to 32 bits. 10085 10086Fixed a problem with large package objects: if the static length of the 10087package is greater than 255, the "variable length package" opcode is 10088emitted. Previously, this caused an error. This requires an update to the 10089ACPI spec, since it currently (incorrectly) states that packages larger 10090than 10091255 elements are not allowed. 10092 10093The disassembler now correctly handles variable length packages and 10094packages 10095larger than 255 elements. 10096 10097---------------------------------------- 1009808 April 2005. Summary of changes for version 20050408: 10099 101001) ACPI CA Core Subsystem: 10101 10102Fixed three cases in the interpreter where an "index" argument to an ASL 10103function was still (internally) 32 bits instead of the required 64 bits. 10104This was the Index argument to the Index, Mid, and Match operators. 10105 10106The "strupr" function is now permanently local (AcpiUtStrupr), since this 10107is 10108not a POSIX-defined function and not present in most kernel-level C 10109libraries. All references to the C library strupr function have been 10110removed 10111from the headers. 10112 10113Completed the deployment of static functions/prototypes. All prototypes 10114with 10115the static attribute have been moved from the headers to the owning C 10116file. 10117 10118Implemented an extract option (-e) for the AcpiBin utility (AML binary 10119utility). This option allows the utility to extract individual ACPI 10120tables 10121from the output of AcpiDmp. It provides the same functionality of the 10122acpixtract.pl perl script without the worry of setting the correct perl 10123options. AcpiBin runs on Windows and has not yet been generated/validated 10124in 10125the Linux/Unix environment (but should be soon). 10126 10127Updated and fixed the table dump option for AcpiBin (-d). This option 10128converts a single ACPI table to a hex/ascii file, similar to the output 10129of 10130AcpiDmp. 10131 10132Code and Data Size: Current and previous core subsystem library sizes are 10133shown below. These are the code and data sizes for the acpica.lib 10134produced 10135by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10136any ACPI driver or OSPM code. The debug version of the code includes the 10137debug output trace mechanism and has a much larger code and data size. 10138Note 10139that these values will vary depending on the efficiency of the compiler 10140and 10141the compiler options used during generation. 10142 10143 Previous Release: 10144 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10145 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10146 Current Release: 10147 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10148 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10149 10150 101512) iASL Compiler/Disassembler: 10152 10153Disassembler fix: Added a check to ensure that the table length found in 10154the 10155ACPI table header within the input file is not longer than the actual 10156input 10157file size. This indicates some kind of file or table corruption. 10158 10159---------------------------------------- 1016029 March 2005. Summary of changes for version 20050329: 10161 101621) ACPI CA Core Subsystem: 10163 10164An error is now generated if an attempt is made to create a Buffer Field 10165of 10166length zero (A CreateField with a length operand of zero.) 10167 10168The interpreter now issues a warning whenever executable code at the 10169module 10170level is detected during ACPI table load. This will give some idea of the 10171prevalence of this type of code. 10172 10173Implemented support for references to named objects (other than control 10174methods) within package objects. 10175 10176Enhanced package object output for the debug object. Package objects are 10177now 10178completely dumped, showing all elements. 10179 10180Enhanced miscellaneous object output for the debug object. Any object can 10181now be written to the debug object (for example, a device object can be 10182written, and the type of the object will be displayed.) 10183 10184The "static" qualifier has been added to all local functions across both 10185the 10186core subsystem and the iASL compiler. 10187 10188The number of "long" lines (> 80 chars) within the source has been 10189significantly reduced, by about 1/3. 10190 10191Cleaned up all header files to ensure that all CA/iASL functions are 10192prototyped (even static functions) and the formatting is consistent. 10193 10194Two new header files have been added, acopcode.h and acnames.h. 10195 10196Removed several obsolete functions that were no longer used. 10197 10198Code and Data Size: Current and previous core subsystem library sizes are 10199shown below. These are the code and data sizes for the acpica.lib 10200produced 10201by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10202any ACPI driver or OSPM code. The debug version of the code includes the 10203debug output trace mechanism and has a much larger code and data size. 10204Note 10205that these values will vary depending on the efficiency of the compiler 10206and 10207the compiler options used during generation. 10208 10209 Previous Release: 10210 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10211 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10212 Current Release: 10213 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10214 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10215 10216 10217 102182) iASL Compiler/Disassembler: 10219 10220Fixed a problem with the resource descriptor generation/support. For the 10221ResourceSourceIndex and the ResourceSource fields, both must be present, 10222or 10223both must be not present - can't have one without the other. 10224 10225The compiler now returns non-zero from the main procedure if any errors 10226have 10227occurred during the compilation. 10228 10229 10230---------------------------------------- 1023109 March 2005. Summary of changes for version 20050309: 10232 102331) ACPI CA Core Subsystem: 10234 10235The string-to-buffer implicit conversion code has been modified again 10236after 10237a change to the ACPI specification. In order to match the behavior of 10238the 10239other major ACPI implementation, the target buffer is no longer truncated 10240if 10241the source string is smaller than an existing target buffer. This change 10242requires an update to the ACPI spec, and should eliminate the recent 10243AE_AML_BUFFER_LIMIT issues. 10244 10245The "implicit return" support was rewritten to a new algorithm that 10246solves 10247the general case. Rather than attempt to determine when a method is about 10248to 10249exit, the result of every ASL operator is saved momentarily until the 10250very 10251next ASL operator is executed. Therefore, no matter how the method exits, 10252there will always be a saved implicit return value. This feature is only 10253enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 10254eliminate 10255AE_AML_NO_RETURN_VALUE errors when enabled. 10256 10257Implemented implicit conversion support for the predicate (operand) of 10258the 10259If, Else, and While operators. String and Buffer arguments are 10260automatically 10261converted to Integers. 10262 10263Changed the string-to-integer conversion behavior to match the new ACPI 10264errata: "If no integer object exists, a new integer is created. The ASCII 10265string is interpreted as a hexadecimal constant. Each string character is 10266interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 10267with the first character as the most significant digit, and ending with 10268the 10269first non-hexadecimal character or end-of-string." This means that the 10270first 10271non-hex character terminates the conversion and this is the code that was 10272changed. 10273 10274Fixed a problem where the ObjectType operator would fail (fault) when 10275used 10276on an Index of a Package which pointed to a null package element. The 10277operator now properly returns zero (Uninitialized) in this case. 10278 10279Fixed a problem where the While operator used excessive memory by not 10280properly popping the result stack during execution. There was no memory 10281leak 10282after execution, however. (Code provided by Valery Podrezov.) 10283 10284Fixed a problem where references to control methods within Package 10285objects 10286caused the method to be invoked, instead of producing a reference object 10287pointing to the method. 10288 10289Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 10290to 10291improve performance and reduce code size. (Code provided by Alexey 10292Starikovskiy.) 10293 10294Code and Data Size: Current and previous core subsystem library sizes are 10295shown below. These are the code and data sizes for the acpica.lib 10296produced 10297by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10298any ACPI driver or OSPM code. The debug version of the code includes the 10299debug output trace mechanism and has a much larger code and data size. 10300Note 10301that these values will vary depending on the efficiency of the compiler 10302and 10303the compiler options used during generation. 10304 10305 Previous Release: 10306 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10307 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10308 Current Release: 10309 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10310 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10311 10312 103132) iASL Compiler/Disassembler: 10314 10315Fixed a problem with the Return operator with no arguments. Since the AML 10316grammar for the byte encoding requires an operand for the Return opcode, 10317the 10318compiler now emits a Return(Zero) for this case. An ACPI specification 10319update has been written for this case. 10320 10321For tables other than the DSDT, namepath optimization is automatically 10322disabled. This is because SSDTs can be loaded anywhere in the namespace, 10323the 10324compiler has no knowledge of where, and thus cannot optimize namepaths. 10325 10326Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 10327inadvertently omitted from the ACPI specification, and will require an 10328update to the spec. 10329 10330The source file scan for ASCII characters is now optional (-a). This 10331change 10332was made because some vendors place non-ascii characters within comments. 10333However, the scan is simply a brute-force byte compare to ensure all 10334characters in the file are in the range 0x00 to 0x7F. 10335 10336Fixed a problem with the CondRefOf operator where the compiler was 10337inappropriately checking for the existence of the target. Since the point 10338of 10339the operator is to check for the existence of the target at run-time, the 10340compiler no longer checks for the target existence. 10341 10342Fixed a problem where errors generated from the internal AML interpreter 10343during constant folding were not handled properly, causing a fault. 10344 10345Fixed a problem with overly aggressive range checking for the Stall 10346operator. The valid range (max 255) is now only checked if the operand is 10347of 10348type Integer. All other operand types cannot be statically checked. 10349 10350Fixed a problem where control method references within the RefOf, 10351DeRefOf, 10352and ObjectType operators were not treated properly. They are now treated 10353as 10354actual references, not method invocations. 10355 10356Fixed and enhanced the "list namespace" option (-ln). This option was 10357broken 10358a number of releases ago. 10359 10360Improved error handling for the Field, IndexField, and BankField 10361operators. 10362The compiler now cleanly reports and recovers from errors in the field 10363component (FieldUnit) list. 10364 10365Fixed a disassembler problem where the optional ResourceDescriptor fields 10366TRS and TTP were not always handled correctly. 10367 10368Disassembler - Comments in output now use "//" instead of "/*" 10369 10370---------------------------------------- 1037128 February 2005. Summary of changes for version 20050228: 10372 103731) ACPI CA Core Subsystem: 10374 10375Fixed a problem where the result of an Index() operator (an object 10376reference) must increment the reference count on the target object for 10377the 10378life of the object reference. 10379 10380Implemented AML Interpreter and Debugger support for the new ACPI 3.0 10381Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 10382WordSpace 10383resource descriptors. 10384 10385Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 10386Space Descriptor" string, indicating interpreter support for the 10387descriptors 10388above. 10389 10390Implemented header support for the new ACPI 3.0 FADT flag bits. 10391 10392Implemented header support for the new ACPI 3.0 PCI Express bits for the 10393PM1 10394status/enable registers. 10395 10396Updated header support for the MADT processor local Apic struct and MADT 10397platform interrupt source struct for new ACPI 3.0 fields. 10398 10399Implemented header support for the SRAT and SLIT ACPI tables. 10400 10401Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 10402flag 10403at runtime. 10404 10405Code and Data Size: Current and previous core subsystem library sizes are 10406shown below. These are the code and data sizes for the acpica.lib 10407produced 10408by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10409any ACPI driver or OSPM code. The debug version of the code includes the 10410debug output trace mechanism and has a much larger code and data size. 10411Note 10412that these values will vary depending on the efficiency of the compiler 10413and 10414the compiler options used during generation. 10415 10416 Previous Release: 10417 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10418 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10419 Current Release: 10420 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10421 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10422 10423 104242) iASL Compiler/Disassembler: 10425 10426Fixed a problem with the internal 64-bit String-to-integer conversion 10427with 10428strings less than two characters long. 10429 10430Fixed a problem with constant folding where the result of the Index() 10431operator can not be considered a constant. This means that Index() cannot 10432be 10433a type3 opcode and this will require an update to the ACPI specification. 10434 10435Disassembler: Implemented support for the TTP, MTP, and TRS resource 10436descriptor fields. These fields were inadvertently ignored and not output 10437in 10438the disassembly of the resource descriptor. 10439 10440 10441 ---------------------------------------- 1044211 February 2005. Summary of changes for version 20050211: 10443 104441) ACPI CA Core Subsystem: 10445 10446Implemented ACPI 3.0 support for implicit conversion within the Match() 10447operator. MatchObjects can now be of type integer, buffer, or string 10448instead 10449of just type integer. Package elements are implicitly converted to the 10450type 10451of the MatchObject. This change aligns the behavior of Match() with the 10452behavior of the other logical operators (LLess(), etc.) It also requires 10453an 10454errata change to the ACPI specification as this support was intended for 10455ACPI 3.0, but was inadvertently omitted. 10456 10457Fixed a problem with the internal implicit "to buffer" conversion. 10458Strings 10459that are converted to buffers will cause buffer truncation if the string 10460is 10461smaller than the target buffer. Integers that are converted to buffers 10462will 10463not cause buffer truncation, only zero extension (both as per the ACPI 10464spec.) The problem was introduced when code was added to truncate the 10465buffer, but this should not be performed in all cases, only the string 10466case. 10467 10468Fixed a problem with the Buffer and Package operators where the 10469interpreter 10470would get confused if two such operators were used as operands to an ASL 10471operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 10472stack was not being popped after the execution of these operators, 10473resulting 10474in an AE_NO_RETURN_VALUE exception. 10475 10476Fixed a problem with constructs of the form Store(Index(...),...). The 10477reference object returned from Index was inadvertently resolved to an 10478actual 10479value. This problem was introduced in version 20050114 when the behavior 10480of 10481Store() was modified to restrict the object types that can be used as the 10482source operand (to match the ACPI specification.) 10483 10484Reduced excessive stack use within the AcpiGetObjectInfo procedure. 10485 10486Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 10487 10488Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 10489 10490Code and Data Size: Current and previous core subsystem library sizes are 10491shown below. These are the code and data sizes for the acpica.lib 10492produced 10493by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10494any ACPI driver or OSPM code. The debug version of the code includes the 10495debug output trace mechanism and has a much larger code and data size. 10496Note 10497that these values will vary depending on the efficiency of the compiler 10498and 10499the compiler options used during generation. 10500 10501 Previous Release: 10502 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10503 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10504 Current Release: 10505 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10506 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10507 10508 105092) iASL Compiler/Disassembler: 10510 10511Fixed a code generation problem in the constant folding optimization code 10512where incorrect code was generated if a constant was reduced to a buffer 10513object (i.e., a reduced type 5 opcode.) 10514 10515Fixed a typechecking problem for the ToBuffer operator. Caused by an 10516incorrect return type in the internal opcode information table. 10517 10518---------------------------------------- 1051925 January 2005. Summary of changes for version 20050125: 10520 105211) ACPI CA Core Subsystem: 10522 10523Fixed a recently introduced problem with the Global Lock where the 10524underlying semaphore was not created. This problem was introduced in 10525version 20050114, and caused an AE_AML_NO_OPERAND exception during an 10526Acquire() operation on _GL. 10527 10528The local object cache is now optional, and is disabled by default. Both 10529AcpiExec and the iASL compiler enable the cache because they run in user 10530mode and this enhances their performance. #define 10531ACPI_ENABLE_OBJECT_CACHE 10532to enable the local cache. 10533 10534Fixed an issue in the internal function AcpiUtEvaluateObject concerning 10535the 10536optional "implicit return" support where an error was returned if no 10537return 10538object was expected, but one was implicitly returned. AE_OK is now 10539returned 10540in this case and the implicitly returned object is deleted. 10541AcpiUtEvaluateObject is only occasionally used, and only to execute 10542reserved 10543methods such as _STA and _INI where the return type is known up front. 10544 10545Fixed a few issues with the internal convert-to-integer code. It now 10546returns 10547an error if an attempt is made to convert a null string, a string of only 10548blanks/tabs, or a zero-length buffer. This affects both implicit 10549conversion 10550and explicit conversion via the ToInteger() operator. 10551 10552The internal debug code in AcpiUtAcquireMutex has been commented out. It 10553is 10554not needed for normal operation and should increase the performance of 10555the 10556entire subsystem. The code remains in case it is needed for debug 10557purposes 10558again. 10559 10560The AcpiExec source and makefile are included in the Unix/Linux package 10561for 10562the first time. 10563 10564Code and Data Size: Current and previous core subsystem library sizes are 10565shown below. These are the code and data sizes for the acpica.lib 10566produced 10567by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10568any ACPI driver or OSPM code. The debug version of the code includes the 10569debug output trace mechanism and has a much larger code and data size. 10570Note 10571that these values will vary depending on the efficiency of the compiler 10572and 10573the compiler options used during generation. 10574 10575 Previous Release: 10576 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10577 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10578 Current Release: 10579 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10580 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10581 105822) iASL Compiler/Disassembler: 10583 10584Switch/Case support: A warning is now issued if the type of the Switch 10585value 10586cannot be determined at compile time. For example, Switch(Arg0) will 10587generate the warning, and the type is assumed to be an integer. As per 10588the 10589ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 10590the 10591warning. 10592 10593Switch/Case support: Implemented support for buffer and string objects as 10594the switch value. This is an ACPI 3.0 feature, now that LEqual supports 10595buffers and strings. 10596 10597Switch/Case support: The emitted code for the LEqual() comparisons now 10598uses 10599the switch value as the first operand, not the second. The case value is 10600now 10601the second operand, and this allows the case value to be implicitly 10602converted to the type of the switch value, not the other way around. 10603 10604Switch/Case support: Temporary variables are now emitted immediately 10605within 10606the control method, not at the global level. This means that there are 10607now 1060836 temps available per-method, not 36 temps per-module as was the case 10609with 10610the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 10611 10612---------------------------------------- 1061314 January 2005. Summary of changes for version 20050114: 10614 10615Added 2005 copyright to all module headers. This affects every module in 10616the core subsystem, iASL compiler, and the utilities. 10617 106181) ACPI CA Core Subsystem: 10619 10620Fixed an issue with the String-to-Buffer conversion code where the string 10621null terminator was not included in the buffer after conversion, but 10622there 10623is existing ASL that assumes the string null terminator is included. This 10624is 10625the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 10626introduced in the previous version when the code was updated to correctly 10627set the converted buffer size as per the ACPI specification. The ACPI 10628spec 10629is ambiguous and will be updated to specify that the null terminator must 10630be 10631included in the converted buffer. This also affects the ToBuffer() ASL 10632operator. 10633 10634Fixed a problem with the Mid() ASL/AML operator where it did not work 10635correctly on Buffer objects. Newly created sub-buffers were not being 10636marked 10637as initialized. 10638 10639 10640Fixed a problem in AcpiTbFindTable where incorrect string compares were 10641performed on the OemId and OemTableId table header fields. These fields 10642are 10643not null terminated, so strncmp is now used instead of strcmp. 10644 10645Implemented a restriction on the Store() ASL/AML operator to align the 10646behavior with the ACPI specification. Previously, any object could be 10647used 10648as the source operand. Now, the only objects that may be used are 10649Integers, 10650Buffers, Strings, Packages, Object References, and DDB Handles. If 10651necessary, the original behavior can be restored by enabling the 10652EnableInterpreterSlack flag. 10653 10654Enhanced the optional "implicit return" support to allow an implicit 10655return 10656value from methods that are invoked externally via the AcpiEvaluateObject 10657interface. This enables implicit returns from the _STA and _INI methods, 10658for example. 10659 10660Changed the Revision() ASL/AML operator to return the current version of 10661the 10662AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 10663returned 10664the supported ACPI version (This is the function of the _REV method). 10665 10666Updated the _REV predefined method to return the currently supported 10667version 10668of ACPI, now 3. 10669 10670Implemented batch mode option for the AcpiExec utility (-b). 10671 10672Code and Data Size: Current and previous core subsystem library sizes are 10673shown below. These are the code and data sizes for the acpica.lib 10674produced 10675by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10676any ACPI driver or OSPM code. The debug version of the code includes the 10677debug output trace mechanism and has a much larger code and data size. 10678Note 10679that these values will vary depending on the efficiency of the compiler 10680and 10681the compiler options used during generation. 10682 10683 Previous Release: 10684 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10685 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10686 Current Release: 10687 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10688 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10689 10690---------------------------------------- 1069110 December 2004. Summary of changes for version 20041210: 10692 10693ACPI 3.0 support is nearing completion in both the iASL compiler and the 10694ACPI CA core subsystem. 10695 106961) ACPI CA Core Subsystem: 10697 10698Fixed a problem in the ToDecimalString operator where the resulting 10699string 10700length was incorrectly calculated. The length is now calculated exactly, 10701eliminating incorrect AE_STRING_LIMIT exceptions. 10702 10703Fixed a problem in the ToHexString operator to allow a maximum 200 10704character 10705string to be produced. 10706 10707Fixed a problem in the internal string-to-buffer and buffer-to-buffer 10708copy 10709routine where the length of the resulting buffer was not truncated to the 10710new size (if the target buffer already existed). 10711 10712Code and Data Size: Current and previous core subsystem library sizes are 10713shown below. These are the code and data sizes for the acpica.lib 10714produced 10715by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10716any ACPI driver or OSPM code. The debug version of the code includes the 10717debug output trace mechanism and has a much larger code and data size. 10718Note 10719that these values will vary depending on the efficiency of the compiler 10720and 10721the compiler options used during generation. 10722 10723 Previous Release: 10724 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10725 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10726 Current Release: 10727 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10728 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10729 10730 107312) iASL Compiler/Disassembler: 10732 10733Implemented the new ACPI 3.0 resource template macros - DWordSpace, 10734ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 10735Includes support in the disassembler. 10736 10737Implemented support for the new (ACPI 3.0) parameter to the Register 10738macro, 10739AccessSize. 10740 10741Fixed a problem where the _HE resource name for the Interrupt macro was 10742referencing bit 0 instead of bit 1. 10743 10744Implemented check for maximum 255 interrupts in the Interrupt macro. 10745 10746Fixed a problem with the predefined resource descriptor names where 10747incorrect AML code was generated if the offset within the resource buffer 10748was 0 or 1. The optimizer shortened the AML code to a single byte opcode 10749but did not update the surrounding package lengths. 10750 10751Changes to the Dma macro: All channels within the channel list must be 10752in 10753the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 10754optional (default is BusMaster). 10755 10756Implemented check for maximum 7 data bytes for the VendorShort macro. 10757 10758The ReadWrite parameter is now optional for the Memory32 and similar 10759macros. 10760 10761---------------------------------------- 1076203 December 2004. Summary of changes for version 20041203: 10763 107641) ACPI CA Core Subsystem: 10765 10766The low-level field insertion/extraction code (exfldio) has been 10767completely 10768rewritten to eliminate unnecessary complexity, bugs, and boundary 10769conditions. 10770 10771Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 10772ToDecimalString 10773operators where the input operand could be inadvertently deleted if no 10774conversion was necessary (e.g., if the input to ToInteger was an Integer 10775object.) 10776 10777Fixed a problem with the ToDecimalString and ToHexString where an 10778incorrect 10779exception code was returned if the resulting string would be > 200 chars. 10780AE_STRING_LIMIT is now returned. 10781 10782Fixed a problem with the Concatenate operator where AE_OK was always 10783returned, even if the operation failed. 10784 10785Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 10786semaphores to be allocated. 10787 10788Code and Data Size: Current and previous core subsystem library sizes are 10789shown below. These are the code and data sizes for the acpica.lib 10790produced 10791by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10792any ACPI driver or OSPM code. The debug version of the code includes the 10793debug output trace mechanism and has a much larger code and data size. 10794Note 10795that these values will vary depending on the efficiency of the compiler 10796and 10797the compiler options used during generation. 10798 10799 Previous Release: 10800 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10801 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10802 Current Release: 10803 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10804 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10805 10806 108072) iASL Compiler/Disassembler: 10808 10809Fixed typechecking for the ObjectType and SizeOf operators. Problem was 10810recently introduced in 20041119. 10811 10812Fixed a problem with the ToUUID macro where the upper nybble of each 10813buffer 10814byte was inadvertently set to zero. 10815 10816---------------------------------------- 1081719 November 2004. Summary of changes for version 20041119: 10818 108191) ACPI CA Core Subsystem: 10820 10821Fixed a problem in the internal ConvertToInteger routine where new 10822integers 10823were not truncated to 32 bits for 32-bit ACPI tables. This routine 10824converts 10825buffers and strings to integers. 10826 10827Implemented support to store a value to an Index() on a String object. 10828This 10829is an ACPI 2.0 feature that had not yet been implemented. 10830 10831Implemented new behavior for storing objects to individual package 10832elements 10833(via the Index() operator). The previous behavior was to invoke the 10834implicit 10835conversion rules if an object was already present at the index. The new 10836behavior is to simply delete any existing object and directly store the 10837new 10838object. Although the ACPI specification seems unclear on this subject, 10839other 10840ACPI implementations behave in this manner. (This is the root of the 10841AE_BAD_HEX_CONSTANT issue.) 10842 10843Modified the RSDP memory scan mechanism to support the extended checksum 10844for 10845ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 10846RSDP signature is found with a valid checksum. 10847 10848Code and Data Size: Current and previous core subsystem library sizes are 10849shown below. These are the code and data sizes for the acpica.lib 10850produced 10851by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10852any ACPI driver or OSPM code. The debug version of the code includes the 10853debug output trace mechanism and has a much larger code and data size. 10854Note 10855that these values will vary depending on the efficiency of the compiler 10856and 10857the compiler options used during generation. 10858 10859 Previous Release: 10860 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10861 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10862 Current Release: 10863 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10864 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10865 10866 108672) iASL Compiler/Disassembler: 10868 10869Fixed a missing semicolon in the aslcompiler.y file. 10870 10871---------------------------------------- 1087205 November 2004. Summary of changes for version 20041105: 10873 108741) ACPI CA Core Subsystem: 10875 10876Implemented support for FADT revision 2. This was an interim table 10877(between 10878ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 10879 10880Implemented optional support to allow uninitialized LocalX and ArgX 10881variables in a control method. The variables are initialized to an 10882Integer 10883object with a value of zero. This support is enabled by setting the 10884AcpiGbl_EnableInterpreterSlack flag to TRUE. 10885 10886Implemented support for Integer objects for the SizeOf operator. Either 108874 10888or 8 is returned, depending on the current integer size (32-bit or 64- 10889bit, 10890depending on the parent table revision). 10891 10892Fixed a problem in the implementation of the SizeOf and ObjectType 10893operators 10894where the operand was resolved to a value too early, causing incorrect 10895return values for some objects. 10896 10897Fixed some possible memory leaks during exceptional conditions. 10898 10899Code and Data Size: Current and previous core subsystem library sizes are 10900shown below. These are the code and data sizes for the acpica.lib 10901produced 10902by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10903any ACPI driver or OSPM code. The debug version of the code includes the 10904debug output trace mechanism and has a much larger code and data size. 10905Note 10906that these values will vary depending on the efficiency of the compiler 10907and 10908the compiler options used during generation. 10909 10910 Previous Release: 10911 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10912 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10913 Current Release: 10914 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10915 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10916 10917 109182) iASL Compiler/Disassembler: 10919 10920Implemented support for all ACPI 3.0 reserved names and methods. 10921 10922Implemented all ACPI 3.0 grammar elements in the front-end, including 10923support for semicolons. 10924 10925Implemented the ACPI 3.0 Function() and ToUUID() macros 10926 10927Fixed a problem in the disassembler where a Scope() operator would not be 10928emitted properly if the target of the scope was in another table. 10929 10930---------------------------------------- 1093115 October 2004. Summary of changes for version 20041015: 10932 10933Note: ACPI CA is currently undergoing an in-depth and complete formal 10934evaluation to test/verify the following areas. Other suggestions are 10935welcome. This will result in an increase in the frequency of releases and 10936the number of bug fixes in the next few months. 10937 - Functional tests for all ASL/AML operators 10938 - All implicit/explicit type conversions 10939 - Bit fields and operation regions 10940 - 64-bit math support and 32-bit-only "truncated" math support 10941 - Exceptional conditions, both compiler and interpreter 10942 - Dynamic object deletion and memory leaks 10943 - ACPI 3.0 support when implemented 10944 - External interfaces to the ACPI subsystem 10945 10946 109471) ACPI CA Core Subsystem: 10948 10949Fixed two alignment issues on 64-bit platforms - within debug statements 10950in 10951AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 10952Address 10953field within the non-aligned ACPI generic address structure. 10954 10955Fixed a problem in the Increment and Decrement operators where incorrect 10956operand resolution could result in the inadvertent modification of the 10957original integer when the integer is passed into another method as an 10958argument and the arg is then incremented/decremented. 10959 10960Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 10961bit 10962BCD number were truncated during conversion. 10963 10964Fixed a problem in the ToDecimal operator where the length of the 10965resulting 10966string could be set incorrectly too long if the input operand was a 10967Buffer 10968object. 10969 10970Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 10971(0) 10972within a buffer would prematurely terminate a compare between buffer 10973objects. 10974 10975Added a check for string overflow (>200 characters as per the ACPI 10976specification) during the Concatenate operator with two string operands. 10977 10978Code and Data Size: Current and previous core subsystem library sizes are 10979shown below. These are the code and data sizes for the acpica.lib 10980produced 10981by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10982any ACPI driver or OSPM code. The debug version of the code includes the 10983debug output trace mechanism and has a much larger code and data size. 10984Note 10985that these values will vary depending on the efficiency of the compiler 10986and 10987the compiler options used during generation. 10988 10989 Previous Release: 10990 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10991 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10992 Current Release: 10993 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10994 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10995 10996 10997 109982) iASL Compiler/Disassembler: 10999 11000Allow the use of the ObjectType operator on uninitialized Locals and Args 11001(returns 0 as per the ACPI specification). 11002 11003Fixed a problem where the compiler would fault if there was a syntax 11004error 11005in the FieldName of all of the various CreateXXXField operators. 11006 11007Disallow the use of lower case letters within the EISAID macro, as per 11008the 11009ACPI specification. All EISAID strings must be of the form "UUUNNNN" 11010Where 11011U is an uppercase letter and N is a hex digit. 11012 11013 11014---------------------------------------- 1101506 October 2004. Summary of changes for version 20041006: 11016 110171) ACPI CA Core Subsystem: 11018 11019Implemented support for the ACPI 3.0 Timer operator. This ASL function 11020implements a 64-bit timer with 100 nanosecond granularity. 11021 11022Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 11023implement the ACPI 3.0 Timer operator. This allows the host OS to 11024implement 11025the timer with the best clock available. Also, it keeps the core 11026subsystem 11027out of the clock handling business, since the host OS (usually) performs 11028this function. 11029 11030Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 11031functions use a 64-bit address which is part of the packed ACPI Generic 11032Address Structure. Since the structure is non-aligned, the alignment 11033macros 11034are now used to extract the address to a local variable before use. 11035 11036Fixed a problem where the ToInteger operator assumed all input strings 11037were 11038hexadecimal. The operator now handles both decimal strings and hex 11039strings 11040(prefixed with "0x"). 11041 11042Fixed a problem where the string length in the string object created as a 11043result of the internal ConvertToString procedure could be incorrect. This 11044potentially affected all implicit conversions and also the 11045ToDecimalString 11046and ToHexString operators. 11047 11048Fixed two problems in the ToString operator. If the length parameter was 11049zero, an incorrect string object was created and the value of the input 11050length parameter was inadvertently changed from zero to Ones. 11051 11052Fixed a problem where the optional ResourceSource string in the 11053ExtendedIRQ 11054resource macro was ignored. 11055 11056Simplified the interfaces to the internal division functions, reducing 11057code 11058size and complexity. 11059 11060Code and Data Size: Current and previous core subsystem library sizes are 11061shown below. These are the code and data sizes for the acpica.lib 11062produced 11063by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11064any ACPI driver or OSPM code. The debug version of the code includes the 11065debug output trace mechanism and has a much larger code and data size. 11066Note 11067that these values will vary depending on the efficiency of the compiler 11068and 11069the compiler options used during generation. 11070 11071 Previous Release: 11072 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11073 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11074 Current Release: 11075 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11076 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11077 11078 110792) iASL Compiler/Disassembler: 11080 11081Implemented support for the ACPI 3.0 Timer operator. 11082 11083Fixed a problem where the Default() operator was inadvertently ignored in 11084a 11085Switch/Case block. This was a problem in the translation of the Switch 11086statement to If...Else pairs. 11087 11088Added support to allow a standalone Return operator, with no parentheses 11089(or 11090operands). 11091 11092Fixed a problem with code generation for the ElseIf operator where the 11093translated Else...If parse tree was improperly constructed leading to the 11094loss of some code. 11095 11096---------------------------------------- 1109722 September 2004. Summary of changes for version 20040922: 11098 110991) ACPI CA Core Subsystem: 11100 11101Fixed a problem with the implementation of the LNot() operator where 11102"Ones" 11103was not returned for the TRUE case. Changed the code to return Ones 11104instead 11105of (!Arg) which was usually 1. This change affects iASL constant folding 11106for 11107this operator also. 11108 11109Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 11110not 11111initialized properly -- Now zero the entire buffer in this case where the 11112buffer already exists. 11113 11114Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 11115Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 11116related code considerably. This will require changes/updates to all OS 11117interface layers (OSLs.) 11118 11119Implemented a new external interface, AcpiInstallExceptionHandler, to 11120allow 11121a system exception handler to be installed. This handler is invoked upon 11122any 11123run-time exception that occurs during control method execution. 11124 11125Added support for the DSDT in AcpiTbFindTable. This allows the 11126DataTableRegion() operator to access the local copy of the DSDT. 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: 77.8K Code, 11.4K Data, 89.2K Total 11141 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11142 Current Release: 11143 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11144 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11145 11146 111472) iASL Compiler/Disassembler: 11148 11149Fixed a problem with constant folding and the LNot operator. LNot was 11150returning 1 in the TRUE case, not Ones as per the ACPI specification. 11151This 11152could result in the generation of an incorrect folded/reduced constant. 11153 11154End-Of-File is now allowed within a "//"-style comment. A parse error no 11155longer occurs if such a comment is at the very end of the input ASL 11156source 11157file. 11158 11159Implemented the "-r" option to override the Revision in the table header. 11160The initial use of this option will be to simplify the evaluation of the 11161AML 11162interpreter by allowing a single ASL source module to be compiled for 11163either 1116432-bit or 64-bit integers. 11165 11166 11167---------------------------------------- 1116827 August 2004. Summary of changes for version 20040827: 11169 111701) ACPI CA Core Subsystem: 11171 11172- Implemented support for implicit object conversion in the non-numeric 11173logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 11174and 11175LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 11176the second operand is implicitly converted on the fly to match the type 11177of 11178the first operand. For example: 11179 11180 LEqual (Source1, Source2) 11181 11182Source1 and Source2 must each evaluate to an integer, a string, or a 11183buffer. 11184The data type of Source1 dictates the required type of Source2. Source2 11185is 11186implicitly converted if necessary to match the type of Source1. 11187 11188- Updated and corrected the behavior of the string conversion support. 11189The 11190rules concerning conversion of buffers to strings (according to the ACPI 11191specification) are as follows: 11192 11193ToDecimalString - explicit byte-wise conversion of buffer to string of 11194decimal values (0-255) separated by commas. ToHexString - explicit byte- 11195wise 11196conversion of buffer to string of hex values (0-FF) separated by commas. 11197ToString - explicit byte-wise conversion of buffer to string. Byte-by- 11198byte 11199copy with no transform except NULL terminated. Any other implicit buffer- 11200to- 11201string conversion - byte-wise conversion of buffer to string of hex 11202values 11203(0-FF) separated by spaces. 11204 11205- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 11206 11207- Fixed a problem in AcpiNsGetPathnameLength where the returned length 11208was 11209one byte too short in the case of a node in the root scope. This could 11210cause a fault during debug output. 11211 11212- Code and Data Size: Current and previous core subsystem library sizes 11213are 11214shown below. These are the code and data sizes for the acpica.lib 11215produced 11216by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11217any ACPI driver or OSPM code. The debug version of the code includes the 11218debug output trace mechanism and has a much larger code and data size. 11219Note 11220that these values will vary depending on the efficiency of the compiler 11221and 11222the compiler options used during generation. 11223 11224 Previous Release: 11225 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11226 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11227 Current Release: 11228 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11229 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11230 11231 112322) iASL Compiler/Disassembler: 11233 11234- Fixed a Linux generation error. 11235 11236 11237---------------------------------------- 1123816 August 2004. Summary of changes for version 20040816: 11239 112401) ACPI CA Core Subsystem: 11241 11242Designed and implemented support within the AML interpreter for the so- 11243called "implicit return". This support returns the result of the last 11244ASL 11245operation within a control method, in the absence of an explicit Return() 11246operator. A few machines depend on this behavior, even though it is not 11247explicitly supported by the ASL language. It is optional support that 11248can 11249be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 11250 11251Removed support for the PCI_Config address space from the internal low 11252level 11253hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 11254support was not used internally, and would not work correctly anyway 11255because 11256the PCI bus number and segment number were not supported. There are 11257separate interfaces for PCI configuration space access because of the 11258unique 11259interface. 11260 11261Code and Data Size: Current and previous core subsystem library sizes are 11262shown below. These are the code and data sizes for the acpica.lib 11263produced 11264by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11265any ACPI driver or OSPM code. The debug version of the code includes the 11266debug output trace mechanism and has a much larger code and data size. 11267Note 11268that these values will vary depending on the efficiency of the compiler 11269and 11270the compiler options used during generation. 11271 11272 Previous Release: 11273 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11274 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11275 Current Release: 11276 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11277 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11278 11279 112802) iASL Compiler/Disassembler: 11281 11282Fixed a problem where constants in ASL expressions at the root level (not 11283within a control method) could be inadvertently truncated during code 11284generation. This problem was introduced in the 20040715 release. 11285 11286 11287---------------------------------------- 1128815 July 2004. Summary of changes for version 20040715: 11289 112901) ACPI CA Core Subsystem: 11291 11292Restructured the internal HW GPE interfaces to pass/track the current 11293state 11294of interrupts (enabled/disabled) in order to avoid possible deadlock and 11295increase flexibility of the interfaces. 11296 11297Implemented a "lexicographical compare" for String and Buffer objects 11298within 11299the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 11300- 11301as per further clarification to the ACPI specification. Behavior is 11302similar 11303to C library "strcmp". 11304 11305Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 11306external function. In the 32-bit non-debug case, the stack use has been 11307reduced from 168 bytes to 32 bytes. 11308 11309Deployed a new run-time configuration flag, 11310AcpiGbl_EnableInterpreterSlack, 11311whose purpose is to allow the AML interpreter to forgive certain bad AML 11312constructs. Default setting is FALSE. 11313 11314Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 11315IO 11316support code. If enabled, it allows field access to go beyond the end of 11317a 11318region definition if the field is within the region length rounded up to 11319the 11320next access width boundary (a common coding error.) 11321 11322Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 11323ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 11324these 11325symbols are lowercased by the latest version of the AcpiSrc tool. 11326 11327The prototypes for the PCI interfaces in acpiosxf.h have been updated to 11328rename "Register" to simply "Reg" to prevent certain compilers from 11329complaining. 11330 11331Code and Data Size: Current and previous core subsystem library sizes are 11332shown below. These are the code and data sizes for the acpica.lib 11333produced 11334by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11335any ACPI driver or OSPM code. The debug version of the code includes the 11336debug output trace mechanism and has a much larger code and data size. 11337Note 11338that these values will vary depending on the efficiency of the compiler 11339and 11340the compiler options used during generation. 11341 11342 Previous Release: 11343 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11344 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11345 Current Release: 11346 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11347 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11348 11349 113502) iASL Compiler/Disassembler: 11351 11352Implemented full support for Package objects within the Case() operator. 11353Note: The Break() operator is currently not supported within Case blocks 11354(TermLists) as there is some question about backward compatibility with 11355ACPI 113561.0 interpreters. 11357 11358 11359Fixed a problem where complex terms were not supported properly within 11360the 11361Switch() operator. 11362 11363Eliminated extraneous warning for compiler-emitted reserved names of the 11364form "_T_x". (Used in Switch/Case operators.) 11365 11366Eliminated optimization messages for "_T_x" objects and small constants 11367within the DefinitionBlock operator. 11368 11369 11370---------------------------------------- 1137115 June 2004. Summary of changes for version 20040615: 11372 113731) ACPI CA Core Subsystem: 11374 11375Implemented support for Buffer and String objects (as per ACPI 2.0) for 11376the 11377following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11378LLessEqual. 11379 11380All directory names in the entire source package are lower case, as they 11381were in earlier releases. 11382 11383Implemented "Disassemble" command in the AML debugger that will 11384disassemble 11385a single control method. 11386 11387Code and Data Size: Current and previous core subsystem library sizes are 11388shown below. These are the code and data sizes for the acpica.lib 11389produced 11390by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11391any ACPI driver or OSPM code. The debug version of the code includes the 11392debug output trace mechanism and has a much larger code and data size. 11393Note 11394that these values will vary depending on the efficiency of the compiler 11395and 11396the compiler options used during generation. 11397 11398 Previous Release: 11399 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11400 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11401 11402 Current Release: 11403 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11404 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11405 11406 114072) iASL Compiler/Disassembler: 11408 11409Implemented support for Buffer and String objects (as per ACPI 2.0) for 11410the 11411following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11412LLessEqual. 11413 11414All directory names in the entire source package are lower case, as they 11415were in earlier releases. 11416 11417Fixed a fault when using the -g or -d<nofilename> options if the FADT was 11418not found. 11419 11420Fixed an issue with the Windows version of the compiler where later 11421versions 11422of Windows place the FADT in the registry under the name "FADT" and not 11423"FACP" as earlier versions did. This applies when using the -g or - 11424d<nofilename> options. The compiler now looks for both strings as 11425necessary. 11426 11427Fixed a problem with compiler namepath optimization where a namepath 11428within 11429the Scope() operator could not be optimized if the namepath was a subpath 11430of 11431the current scope path. 11432 11433---------------------------------------- 1143427 May 2004. Summary of changes for version 20040527: 11435 114361) ACPI CA Core Subsystem: 11437 11438Completed a new design and implementation for EBDA (Extended BIOS Data 11439Area) 11440support in the RSDP scan code. The original code improperly scanned for 11441the 11442EBDA by simply scanning from memory location 0 to 0x400. The correct 11443method 11444is to first obtain the EBDA pointer from within the BIOS data area, then 11445scan 1K of memory starting at the EBDA pointer. There appear to be few 11446if 11447any machines that place the RSDP in the EBDA, however. 11448 11449Integrated a fix for a possible fault during evaluation of BufferField 11450arguments. Obsolete code that was causing the problem was removed. 11451 11452Found and fixed a problem in the Field Support Code where data could be 11453corrupted on a bit field read that starts on an aligned boundary but does 11454not end on an aligned boundary. Merged the read/write "datum length" 11455calculation code into a common procedure. 11456 11457Rolled in a couple of changes to the FreeBSD-specific header. 11458 11459 11460Code and Data Size: Current and previous core subsystem library sizes are 11461shown below. These are the code and data sizes for the acpica.lib 11462produced 11463by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11464any ACPI driver or OSPM code. The debug version of the code includes the 11465debug output trace mechanism and has a much larger code and data size. 11466Note 11467that these values will vary depending on the efficiency of the compiler 11468and 11469the compiler options used during generation. 11470 11471 Previous Release: 11472 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11473 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11474 Current Release: 11475 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11476 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11477 11478 114792) iASL Compiler/Disassembler: 11480 11481Fixed a generation warning produced by some overly-verbose compilers for 11482a 1148364-bit constant. 11484 11485---------------------------------------- 1148614 May 2004. Summary of changes for version 20040514: 11487 114881) ACPI CA Core Subsystem: 11489 11490Fixed a problem where hardware GPE enable bits sometimes not set properly 11491during and after GPE method execution. Result of 04/27 changes. 11492 11493Removed extra "clear all GPEs" when sleeping/waking. 11494 11495Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 11496AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 11497to 11498the new AcpiEv* calls as appropriate. 11499 11500ACPI_OS_NAME was removed from the OS-specific headers. The default name 11501is 11502now "Microsoft Windows NT" for maximum compatibility. However this can 11503be 11504changed by modifying the acconfig.h file. 11505 11506Allow a single invocation of AcpiInstallNotifyHandler for a handler that 11507traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 11508 11509Run _INI methods on ThermalZone objects. This is against the ACPI 11510specification, but there is apparently ASL code in the field that has 11511these 11512_INI methods, and apparently "other" AML interpreters execute them. 11513 11514Performed a full 16/32/64 bit lint that resulted in some small changes. 11515 11516Added a sleep simulation command to the AML debugger to test sleep code. 11517 11518Code and Data Size: Current and previous core subsystem library sizes are 11519shown below. These are the code and data sizes for the acpica.lib 11520produced 11521by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11522any ACPI driver or OSPM code. The debug version of the code includes the 11523debug output trace mechanism and has a much larger code and data size. 11524Note 11525that these values will vary depending on the efficiency of the compiler 11526and 11527the compiler options used during generation. 11528 11529 Previous Release: 11530 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11531 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11532 Current Release: 11533 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11534 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11535 11536---------------------------------------- 1153727 April 2004. Summary of changes for version 20040427: 11538 115391) ACPI CA Core Subsystem: 11540 11541Completed a major overhaul of the GPE handling within ACPI CA. There are 11542now three types of GPEs: wake-only, runtime-only, and combination 11543wake/run. 11544The only GPEs allowed to be combination wake/run are for button-style 11545devices such as a control-method power button, control-method sleep 11546button, 11547or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 11548not 11549referenced by any _PRW methods are marked for "runtime" and hardware 11550enabled. Any GPE that is referenced by a _PRW method is marked for 11551"wake" 11552(and disabled at runtime). However, at sleep time, only those GPEs that 11553have been specifically enabled for wake via the AcpiEnableGpe interface 11554will 11555actually be hardware enabled. 11556 11557A new external interface has been added, AcpiSetGpeType(), that is meant 11558to 11559be used by device drivers to force a GPE to a particular type. It will 11560be 11561especially useful for the drivers for the button devices mentioned above. 11562 11563Completed restructuring of the ACPI CA initialization sequence so that 11564default operation region handlers are installed before GPEs are 11565initialized 11566and the _PRW methods are executed. This will prevent errors when the 11567_PRW 11568methods attempt to access system memory or I/O space. 11569 11570GPE enable/disable no longer reads the GPE enable register. We now keep 11571the 11572enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 11573thus no longer depend on the hardware to maintain these bits. 11574 11575Always clear the wake status and fixed/GPE status bits before sleep, even 11576for state S5. 11577 11578Improved the AML debugger output for displaying the GPE blocks and their 11579current status. 11580 11581Added new strings for the _OSI method, of the form "Windows 2001 SPx" 11582where 11583x = 0,1,2,3,4. 11584 11585Fixed a problem where the physical address was incorrectly calculated 11586when 11587the Load() operator was used to directly load from an Operation Region 11588(vs. 11589loading from a Field object.) Also added check for minimum table length 11590for 11591this case. 11592 11593Fix for multiple mutex acquisition. Restore original thread SyncLevel on 11594mutex release. 11595 11596Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 11597consistency with the other fields returned. 11598 11599Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 11600structure for each GPE in the system, so the size of this structure is 11601important. 11602 11603CPU stack requirement reduction: Cleaned up the method execution and 11604object 11605evaluation paths so that now a parameter structure is passed, instead of 11606copying the various method parameters over and over again. 11607 11608In evregion.c: Correctly exit and reenter the interpreter region if and 11609only if dispatching an operation region request to a user-installed 11610handler. 11611Do not exit/reenter when dispatching to a default handler (e.g., default 11612system memory or I/O handlers) 11613 11614 11615Notes for updating drivers for the new GPE support. The following 11616changes 11617must be made to ACPI-related device drivers that are attached to one or 11618more 11619GPEs: (This information will be added to the ACPI CA Programmer 11620Reference.) 11621 116221) AcpiInstallGpeHandler no longer automatically enables the GPE, you 11623must 11624explicitly call AcpiEnableGpe. 116252) There is a new interface called AcpiSetGpeType. This should be called 11626before enabling the GPE. Also, this interface will automatically disable 11627the GPE if it is currently enabled. 116283) AcpiEnableGpe no longer supports a GPE type flag. 11629 11630Specific drivers that must be changed: 116311) EC driver: 11632 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 11633AeGpeHandler, NULL); 11634 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 11635 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 11636 116372) Button Drivers (Power, Lid, Sleep): 11638Run _PRW method under parent device 11639If _PRW exists: /* This is a control-method button */ 11640 Extract GPE number and possibly GpeDevice 11641 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 11642 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 11643 11644For all other devices that have _PRWs, we automatically set the GPE type 11645to 11646ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 11647This 11648must be done on a selective basis, usually requiring some kind of user 11649app 11650to allow the user to pick the wake devices. 11651 11652 11653Code and Data Size: Current and previous core subsystem library sizes are 11654shown below. These are the code and data sizes for the acpica.lib 11655produced 11656by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11657any ACPI driver or OSPM code. The debug version of the code includes the 11658debug output trace mechanism and has a much larger code and data size. 11659Note 11660that these values will vary depending on the efficiency of the compiler 11661and 11662the compiler options used during generation. 11663 11664 Previous Release: 11665 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11666 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11667 Current Release: 11668 11669 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11670 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11671 11672 11673 11674---------------------------------------- 1167502 April 2004. Summary of changes for version 20040402: 11676 116771) ACPI CA Core Subsystem: 11678 11679Fixed an interpreter problem where an indirect store through an ArgX 11680parameter was incorrectly applying the "implicit conversion rules" during 11681the store. From the ACPI specification: "If the target is a method local 11682or 11683argument (LocalX or ArgX), no conversion is performed and the result is 11684stored directly to the target". The new behavior is to disable implicit 11685conversion during ALL stores to an ArgX. 11686 11687Changed the behavior of the _PRW method scan to ignore any and all errors 11688returned by a given _PRW. This prevents the scan from aborting from the 11689failure of any single _PRW. 11690 11691Moved the runtime configuration parameters from the global init procedure 11692to 11693static variables in acglobal.h. This will allow the host to override the 11694default values easily. 11695 11696Code and Data Size: Current and previous core subsystem library sizes are 11697shown below. These are the code and data sizes for the acpica.lib 11698produced 11699by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11700any ACPI driver or OSPM code. The debug version of the code includes the 11701debug output trace mechanism and has a much larger code and data size. 11702Note 11703that these values will vary depending on the efficiency of the compiler 11704and 11705the compiler options used during generation. 11706 11707 Previous Release: 11708 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11709 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11710 Current Release: 11711 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11712 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11713 11714 117152) iASL Compiler/Disassembler: 11716 11717iASL now fully disassembles SSDTs. However, External() statements are 11718not 11719generated automatically for unresolved symbols at this time. This is a 11720planned feature for future implementation. 11721 11722Fixed a scoping problem in the disassembler that occurs when the type of 11723the 11724target of a Scope() operator is overridden. This problem caused an 11725incorrectly nested internal namespace to be constructed. 11726 11727Any warnings or errors that are emitted during disassembly are now 11728commented 11729out automatically so that the resulting file can be recompiled without 11730any 11731hand editing. 11732 11733---------------------------------------- 1173426 March 2004. Summary of changes for version 20040326: 11735 117361) ACPI CA Core Subsystem: 11737 11738Implemented support for "wake" GPEs via interaction between GPEs and the 11739_PRW methods. Every GPE that is pointed to by one or more _PRWs is 11740identified as a WAKE GPE and by default will no longer be enabled at 11741runtime. Previously, we were blindly enabling all GPEs with a 11742corresponding 11743_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 11744We 11745believe this has been the cause of thousands of "spurious" GPEs on some 11746systems. 11747 11748This new GPE behavior is can be reverted to the original behavior (enable 11749ALL GPEs at runtime) via a runtime flag. 11750 11751Fixed a problem where aliased control methods could not access objects 11752properly. The proper scope within the namespace was not initialized 11753(transferred to the target of the aliased method) before executing the 11754target method. 11755 11756Fixed a potential race condition on internal object deletion on the 11757return 11758object in AcpiEvaluateObject. 11759 11760Integrated a fix for resource descriptors where both _MEM and _MTP were 11761being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 11762wide, 0x0F instead of 0x03.) 11763 11764Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 11765preventing 11766a 11767fault in some cases. 11768 11769Updated Notify() values for debug statements in evmisc.c 11770 11771Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 11772 11773Code and Data Size: Current and previous core subsystem library sizes are 11774shown below. These are the code and data sizes for the acpica.lib 11775produced 11776by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11777any ACPI driver or OSPM code. The debug version of the code includes the 11778debug output trace mechanism and has a much larger code and data size. 11779Note 11780that these values will vary depending on the efficiency of the compiler 11781and 11782the compiler options used during generation. 11783 11784 Previous Release: 11785 11786 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11787 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11788 Current Release: 11789 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11790 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11791 11792---------------------------------------- 1179311 March 2004. Summary of changes for version 20040311: 11794 117951) ACPI CA Core Subsystem: 11796 11797Fixed a problem where errors occurring during the parse phase of control 11798method execution did not abort cleanly. For example, objects created and 11799installed in the namespace were not deleted. This caused all subsequent 11800invocations of the method to return the AE_ALREADY_EXISTS exception. 11801 11802Implemented a mechanism to force a control method to "Serialized" 11803execution 11804if the method attempts to create namespace objects. (The root of the 11805AE_ALREADY_EXISTS problem.) 11806 11807Implemented support for the predefined _OSI "internal" control method. 11808Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 11809and 11810"Windows 2001.1", and can be easily upgraded for new strings as 11811necessary. 11812This feature will allow "other" operating systems to execute the fully 11813tested, "Windows" code path through the ASL code 11814 11815Global Lock Support: Now allows multiple acquires and releases with any 11816internal thread. Removed concept of "owning thread" for this special 11817mutex. 11818 11819Fixed two functions that were inappropriately declaring large objects on 11820the 11821CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 11822during 11823method execution considerably. 11824 11825Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 11826S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 11827 11828Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 11829defined on the machine. 11830 11831Implemented two runtime options: One to force all control method 11832execution 11833to "Serialized" to mimic Windows behavior, another to disable _OSI 11834support 11835if it causes problems on a given machine. 11836 11837Code and Data Size: Current and previous core subsystem library sizes are 11838shown below. These are the code and data sizes for the acpica.lib 11839produced 11840by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11841any ACPI driver or OSPM code. The debug version of the code includes the 11842debug output trace mechanism and has a much larger code and data size. 11843Note 11844that these values will vary depending on the efficiency of the compiler 11845and 11846the compiler options used during generation. 11847 11848 Previous Release: 11849 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11850 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11851 Current Release: 11852 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11853 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11854 118552) iASL Compiler/Disassembler: 11856 11857Fixed an array size problem for FreeBSD that would cause the compiler to 11858fault. 11859 11860---------------------------------------- 1186120 February 2004. Summary of changes for version 20040220: 11862 11863 118641) ACPI CA Core Subsystem: 11865 11866Implemented execution of _SxD methods for Device objects in the 11867GetObjectInfo interface. 11868 11869Fixed calls to _SST method to pass the correct arguments. 11870 11871Added a call to _SST on wake to restore to "working" state. 11872 11873Check for End-Of-Buffer failure case in the WalkResources interface. 11874 11875Integrated fix for 64-bit alignment issue in acglobal.h by moving two 11876structures to the beginning of the file. 11877 11878After wake, clear GPE status register(s) before enabling GPEs. 11879 11880After wake, clear/enable power button. (Perhaps we should clear/enable 11881all 11882fixed events upon wake.) 11883 11884Fixed a couple of possible memory leaks in the Namespace manager. 11885 11886Integrated latest acnetbsd.h file. 11887 11888---------------------------------------- 1188911 February 2004. Summary of changes for version 20040211: 11890 11891 118921) ACPI CA Core Subsystem: 11893 11894Completed investigation and implementation of the call-by-reference 11895mechanism for control method arguments. 11896 11897Fixed a problem where a store of an object into an indexed package could 11898fail if the store occurs within a different method than the method that 11899created the package. 11900 11901Fixed a problem where the ToDecimal operator could return incorrect 11902results. 11903 11904Fixed a problem where the CopyObject operator could fail on some of the 11905more 11906obscure objects (e.g., Reference objects.) 11907 11908Improved the output of the Debug object to display buffer, package, and 11909index objects. 11910 11911Fixed a problem where constructs of the form "RefOf (ArgX)" did not 11912return 11913the expected result. 11914 11915Added permanent ACPI_REPORT_ERROR macros for all instances of the 11916ACPI_AML_INTERNAL exception. 11917 11918Integrated latest version of acfreebsd.h 11919 11920---------------------------------------- 1192116 January 2004. Summary of changes for version 20040116: 11922 11923The purpose of this release is primarily to update the copyright years in 11924each module, thus causing a huge number of diffs. There are a few small 11925functional changes, however. 11926 119271) ACPI CA Core Subsystem: 11928 11929Improved error messages when there is a problem finding one or more of 11930the 11931required base ACPI tables 11932 11933Reintroduced the definition of APIC_HEADER in actbl.h 11934 11935Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 11936 11937Removed extraneous reference to NewObj in dsmthdat.c 11938 119392) iASL compiler 11940 11941Fixed a problem introduced in December that disabled the correct 11942disassembly 11943of Resource Templates 11944 11945 11946---------------------------------------- 1194703 December 2003. Summary of changes for version 20031203: 11948 119491) ACPI CA Core Subsystem: 11950 11951Changed the initialization of Operation Regions during subsystem 11952init to perform two entire walks of the ACPI namespace; The first 11953to initialize the regions themselves, the second to execute the 11954_REG methods. This fixed some interdependencies across _REG 11955methods found on some machines. 11956 11957Fixed a problem where a Store(Local0, Local1) could simply update 11958the object reference count, and not create a new copy of the 11959object if the Local1 is uninitialized. 11960 11961Implemented support for the _SST reserved method during sleep 11962transitions. 11963 11964Implemented support to clear the SLP_TYP and SLP_EN bits when 11965waking up, this is apparently required by some machines. 11966 11967When sleeping, clear the wake status only if SleepState is not S5. 11968 11969Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 11970pointer arithmetic advanced a string pointer too far. 11971 11972Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 11973could be returned if the requested table has not been loaded. 11974 11975Within the support for IRQ resources, restructured the handling of 11976the active and edge/level bits. 11977 11978Fixed a few problems in AcpiPsxExecute() where memory could be 11979leaked under certain error conditions. 11980 11981Improved error messages for the cases where the ACPI mode could 11982not be entered. 11983 11984Code and Data Size: Current and previous core subsystem library 11985sizes are shown below. These are the code and data sizes for the 11986acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11987these values do not include any ACPI driver or OSPM code. The 11988debug version of the code includes the debug output trace 11989mechanism and has a much larger code and data size. Note that 11990these values will vary depending on the efficiency of the compiler 11991and the compiler options used during generation. 11992 11993 Previous Release (20031029): 11994 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11995 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11996 Current Release: 11997 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11998 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11999 120002) iASL Compiler/Disassembler: 12001 12002Implemented a fix for the iASL disassembler where a bad index was 12003generated. This was most noticeable on 64-bit platforms 12004 12005 12006---------------------------------------- 1200729 October 2003. Summary of changes for version 20031029: 12008 120091) ACPI CA Core Subsystem: 12010 12011 12012Fixed a problem where a level-triggered GPE with an associated 12013_Lxx control method was incorrectly cleared twice. 12014 12015Fixed a problem with the Field support code where an access can 12016occur beyond the end-of-region if the field is non-aligned but 12017extends to the very end of the parent region (resulted in an 12018AE_AML_REGION_LIMIT exception.) 12019 12020Fixed a problem with ACPI Fixed Events where an RT Clock handler 12021would not get invoked on an RTC event. The RTC event bitmasks for 12022the PM1 registers were not being initialized properly. 12023 12024Implemented support for executing _STA and _INI methods for 12025Processor objects. Although this is currently not part of the 12026ACPI specification, there is existing ASL code that depends on the 12027init-time execution of these methods. 12028 12029Implemented and deployed a GetDescriptorName function to decode 12030the various types of internal descriptors. Guards against null 12031descriptors during debug output also. 12032 12033Implemented and deployed a GetNodeName function to extract the 4- 12034character namespace node name. This function simplifies the debug 12035and error output, as well as guarding against null pointers during 12036output. 12037 12038Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 12039simplify the debug and error output of 64-bit integers. This 12040macro replaces the HIDWORD and LODWORD macros for dumping these 12041integers. 12042 12043Updated the implementation of the Stall() operator to only call 12044AcpiOsStall(), and also return an error if the operand is larger 12045than 255. This preserves the required behavior of not 12046relinquishing the processor, as would happen if AcpiOsSleep() was 12047called for "long stalls". 12048 12049Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 12050initialized are now treated as NOOPs. 12051 12052Cleaned up a handful of warnings during 64-bit generation. 12053 12054Fixed a reported error where and incorrect GPE number was passed 12055to the GPE dispatch handler. This value is only used for error 12056output, however. Used this opportunity to clean up and streamline 12057the GPE dispatch code. 12058 12059Code and Data Size: Current and previous core subsystem library 12060sizes are shown below. These are the code and data sizes for the 12061acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12062these values do not include any ACPI driver or OSPM code. The 12063 12064debug version of the code includes the debug output trace 12065mechanism and has a much larger code and data size. Note that 12066these values will vary depending on the efficiency of the compiler 12067and the compiler options used during generation. 12068 12069 Previous Release (20031002): 12070 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12071 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12072 Current Release: 12073 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12074 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12075 12076 120772) iASL Compiler/Disassembler: 12078 12079Updated the iASL compiler to return an error if the operand to the 12080Stall() operator is larger than 255. 12081 12082 12083---------------------------------------- 1208402 October 2003. Summary of changes for version 20031002: 12085 12086 120871) ACPI CA Core Subsystem: 12088 12089Fixed a problem with Index Fields where the index was not 12090incremented for fields that require multiple writes to the 12091index/data registers (Fields that are wider than the data 12092register.) 12093 12094Fixed a problem with all Field objects where a write could go 12095beyond the end-of-field if the field was larger than the access 12096granularity and therefore required multiple writes to complete the 12097request. An extra write beyond the end of the field could happen 12098inadvertently. 12099 12100Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 12101would incorrectly be returned if the width of the Data Register 12102was larger than the specified field access width. 12103 12104Completed fixes for LoadTable() and Unload() and verified their 12105operation. Implemented full support for the "DdbHandle" object 12106throughout the ACPI CA subsystem. 12107 12108Implemented full support for the MADT and ECDT tables in the ACPI 12109CA header files. Even though these tables are not directly 12110consumed by ACPI CA, the header definitions are useful for ACPI 12111device drivers. 12112 12113Integrated resource descriptor fixes posted to the Linux ACPI 12114list. This included checks for minimum descriptor length, and 12115support for trailing NULL strings within descriptors that have 12116optional string elements. 12117 12118Code and Data Size: Current and previous core subsystem library 12119sizes are shown below. These are the code and data sizes for the 12120acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12121these values do not include any ACPI driver or OSPM code. The 12122debug version of the code includes the debug output trace 12123mechanism and has a much larger code and data size. Note that 12124these values will vary depending on the efficiency of the compiler 12125and the compiler options used during generation. 12126 12127 Previous Release (20030918): 12128 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12129 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12130 Current Release: 12131 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12132 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12133 12134 121352) iASL Compiler: 12136 12137Implemented detection of non-ASCII characters within the input 12138source ASL file. This catches attempts to compile binary (AML) 12139files early in the compile, with an informative error message. 12140 12141Fixed a problem where the disassembler would fault if the output 12142filename could not be generated or if the output file could not be 12143opened. 12144 12145---------------------------------------- 1214618 September 2003. Summary of changes for version 20030918: 12147 12148 121491) ACPI CA Core Subsystem: 12150 12151Found and fixed a longstanding problem with the late execution of 12152the various deferred AML opcodes (such as Operation Regions, 12153Buffer Fields, Buffers, and Packages). If the name string 12154specified for the name of the new object placed the object in a 12155scope other than the current scope, the initialization/execution 12156of the opcode failed. The solution to this problem was to 12157implement a mechanism where the late execution of such opcodes 12158does not attempt to lookup/create the name a second time in an 12159incorrect scope. This fixes the "region size computed 12160incorrectly" problem. 12161 12162Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 12163Global Lock AE_BAD_PARAMETER error. 12164 12165Fixed several 64-bit issues with prototypes, casting and data 12166types. 12167 12168Removed duplicate prototype from acdisasm.h 12169 12170Fixed an issue involving EC Operation Region Detach (Shaohua Li) 12171 12172Code and Data Size: Current and previous core subsystem library 12173sizes are shown below. These are the code and data sizes for the 12174acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12175these values do not include any ACPI driver or OSPM code. The 12176debug version of the code includes the debug output trace 12177mechanism and has a much larger code and data size. Note that 12178these values will vary depending on the efficiency of the compiler 12179and the compiler options used during generation. 12180 12181 Previous Release: 12182 12183 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12184 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12185 Current Release: 12186 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12187 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12188 12189 121902) Linux: 12191 12192Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 12193correct sleep time in seconds. 12194 12195---------------------------------------- 1219614 July 2003. Summary of changes for version 20030619: 12197 121981) ACPI CA Core Subsystem: 12199 12200Parse SSDTs in order discovered, as opposed to reverse order 12201(Hrvoje Habjanic) 12202 12203Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 12204Klausner, 12205 Nate Lawson) 12206 12207 122082) Linux: 12209 12210Dynamically allocate SDT list (suggested by Andi Kleen) 12211 12212proc function return value cleanups (Andi Kleen) 12213 12214Correctly handle NMI watchdog during long stalls (Andrew Morton) 12215 12216Make it so acpismp=force works (reported by Andrew Morton) 12217 12218 12219---------------------------------------- 1222019 June 2003. Summary of changes for version 20030619: 12221 122221) ACPI CA Core Subsystem: 12223 12224Fix To/FromBCD, eliminating the need for an arch-specific #define. 12225 12226Do not acquire a semaphore in the S5 shutdown path. 12227 12228Fix ex_digits_needed for 0. (Takayoshi Kochi) 12229 12230Fix sleep/stall code reversal. (Andi Kleen) 12231 12232Revert a change having to do with control method calling 12233semantics. 12234 122352) Linux: 12236 12237acpiphp update (Takayoshi Kochi) 12238 12239Export acpi_disabled for sonypi (Stelian Pop) 12240 12241Mention acpismp=force in config help 12242 12243Re-add acpitable.c and acpismp=force. This improves backwards 12244 12245compatibility and also cleans up the code to a significant degree. 12246 12247Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 12248 12249---------------------------------------- 1225022 May 2003. Summary of changes for version 20030522: 12251 122521) ACPI CA Core Subsystem: 12253 12254Found and fixed a reported problem where an AE_NOT_FOUND error 12255occurred occasionally during _BST evaluation. This turned out to 12256be an Owner ID allocation issue where a called method did not get 12257a new ID assigned to it. Eventually, (after 64k calls), the Owner 12258ID UINT16 would wraparound so that the ID would be the same as the 12259caller's and the called method would delete the caller's 12260namespace. 12261 12262Implemented extended error reporting for control methods that are 12263aborted due to a run-time exception. Output includes the exact 12264AML instruction that caused the method abort, a dump of the method 12265locals and arguments at the time of the abort, and a trace of all 12266nested control method calls. 12267 12268Modified the interpreter to allow the creation of buffers of zero 12269length from the AML code. Implemented new code to ensure that no 12270attempt is made to actually allocate a memory buffer (of length 12271zero) - instead, a simple buffer object with a NULL buffer pointer 12272and length zero is created. A warning is no longer issued when 12273the AML attempts to create a zero-length buffer. 12274 12275Implemented a workaround for the "leading asterisk issue" in 12276_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 12277asterisk is automatically removed if present in any HID, UID, or 12278CID strings. The iASL compiler will still flag this asterisk as 12279an error, however. 12280 12281Implemented full support for _CID methods that return a package of 12282multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 12283now additionally returns a device _CID list if present. This 12284required a change to the external interface in order to pass an 12285ACPI_BUFFER object as a parameter since the _CID list is of 12286variable length. 12287 12288Fixed a problem with the new AE_SAME_HANDLER exception where 12289handler initialization code did not know about this exception. 12290 12291Code and Data Size: Current and previous core subsystem library 12292sizes are shown below. These are the code and data sizes for the 12293acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12294these values do not include any ACPI driver or OSPM code. The 12295debug version of the code includes the debug output trace 12296mechanism and has a much larger code and data size. Note that 12297these values will vary depending on the efficiency of the compiler 12298and the compiler options used during generation. 12299 12300 Previous Release (20030509): 12301 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12302 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12303 Current Release: 12304 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12305 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12306 12307 123082) Linux: 12309 12310Fixed a bug in which we would reinitialize the ACPI interrupt 12311after it was already working, thus disabling all ACPI and the IRQs 12312for any other device sharing the interrupt. (Thanks to Stian 12313Jordet) 12314 12315Toshiba driver update (John Belmonte) 12316 12317Return only 0 or 1 for our interrupt handler status (Andrew 12318Morton) 12319 12320 123213) iASL Compiler: 12322 12323Fixed a reported problem where multiple (nested) ElseIf() 12324statements were not handled correctly by the compiler, resulting 12325in incorrect warnings and incorrect AML code. This was a problem 12326in both the ASL parser and the code generator. 12327 12328 123294) Documentation: 12330 12331Added changes to existing interfaces, new exception codes, and new 12332text concerning reference count object management versus garbage 12333collection. 12334 12335---------------------------------------- 1233609 May 2003. Summary of changes for version 20030509. 12337 12338 123391) ACPI CA Core Subsystem: 12340 12341Changed the subsystem initialization sequence to hold off 12342installation of address space handlers until the hardware has been 12343initialized and the system has entered ACPI mode. This is because 12344the installation of space handlers can cause _REG methods to be 12345run. Previously, the _REG methods could potentially be run before 12346ACPI mode was enabled. 12347 12348Fixed some memory leak issues related to address space handler and 12349notify handler installation. There were some problems with the 12350reference count mechanism caused by the fact that the handler 12351objects are shared across several namespace objects. 12352 12353Fixed a reported problem where reference counts within the 12354namespace were not properly updated when named objects created by 12355method execution were deleted. 12356 12357Fixed a reported problem where multiple SSDTs caused a deletion 12358issue during subsystem termination. Restructured the table data 12359structures to simplify the linked lists and the related code. 12360 12361Fixed a problem where the table ID associated with secondary 12362tables (SSDTs) was not being propagated into the namespace objects 12363created by those tables. This would only present a problem for 12364tables that are unloaded at run-time, however. 12365 12366Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 12367type as the length parameter (instead of UINT32). 12368 12369Solved a long-standing problem where an ALREADY_EXISTS error 12370appears on various systems. This problem could happen when there 12371are multiple PCI_Config operation regions under a single PCI root 12372bus. This doesn't happen very frequently, but there are some 12373systems that do this in the ASL. 12374 12375Fixed a reported problem where the internal DeleteNode function 12376was incorrectly handling the case where a namespace node was the 12377first in the parent's child list, and had additional peers (not 12378the only child, but first in the list of children.) 12379 12380Code and Data Size: Current core subsystem library sizes are shown 12381below. These are the code and data sizes for the acpica.lib 12382produced by the Microsoft Visual C++ 6.0 compiler, and these 12383values do not include any ACPI driver or OSPM code. The debug 12384version of the code includes the debug output trace mechanism and 12385has a much larger code and data size. Note that these values will 12386vary depending on the efficiency of the compiler and the compiler 12387options used during generation. 12388 12389 Previous Release 12390 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12391 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12392 Current Release: 12393 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12394 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12395 12396 123972) Linux: 12398 12399Allow ":" in OS override string (Ducrot Bruno) 12400 12401Kobject fix (Greg KH) 12402 12403 124043 iASL Compiler/Disassembler: 12405 12406Fixed a problem in the generation of the C source code files (AML 12407is emitted in C source statements for BIOS inclusion) where the 12408Ascii dump that appears within a C comment at the end of each line 12409could cause a compile time error if the AML sequence happens to 12410have an open comment or close comment sequence embedded. 12411 12412 12413---------------------------------------- 1241424 April 2003. Summary of changes for version 20030424. 12415 12416 124171) ACPI CA Core Subsystem: 12418 12419Support for big-endian systems has been implemented. Most of the 12420support has been invisibly added behind big-endian versions of the 12421ACPI_MOVE_* macros. 12422 12423Fixed a problem in AcpiHwDisableGpeBlock() and 12424AcpiHwClearGpeBlock() where an incorrect offset was passed to the 12425low level hardware write routine. The offset parameter was 12426actually eliminated from the low level read/write routines because 12427they had become obsolete. 12428 12429Fixed a problem where a handler object was deleted twice during 12430the removal of a fixed event handler. 12431 12432 124332) Linux: 12434 12435A fix for SMP systems with link devices was contributed by 12436 12437Compaq's Dan Zink. 12438 12439(2.5) Return whether we handled the interrupt in our IRQ handler. 12440(Linux ISRs no longer return void, so we can propagate the handler 12441return value from the ACPI CA core back to the OS.) 12442 12443 12444 124453) Documentation: 12446 12447The ACPI CA Programmer Reference has been updated to reflect new 12448interfaces and changes to existing interfaces. 12449 12450---------------------------------------- 1245128 March 2003. Summary of changes for version 20030328. 12452 124531) ACPI CA Core Subsystem: 12454 12455The GPE Block Device support has been completed. New interfaces 12456are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 12457interfaces (enable, disable, clear, getstatus) have been split 12458into separate interfaces for Fixed Events and General Purpose 12459Events (GPEs) in order to support GPE Block Devices properly. 12460 12461Fixed a problem where the error message "Failed to acquire 12462semaphore" would appear during operations on the embedded 12463controller (EC). 12464 12465Code and Data Size: Current core subsystem library sizes are shown 12466below. These are the code and data sizes for the acpica.lib 12467produced by the Microsoft Visual C++ 6.0 compiler, and these 12468values do not include any ACPI driver or OSPM code. The debug 12469version of the code includes the debug output trace mechanism and 12470has a much larger code and data size. Note that these values will 12471vary depending on the efficiency of the compiler and the compiler 12472options used during generation. 12473 12474 Previous Release 12475 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12476 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12477 Current Release: 12478 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12479 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12480 12481 12482---------------------------------------- 1248328 February 2003. Summary of changes for version 20030228. 12484 12485 124861) ACPI CA Core Subsystem: 12487 12488The GPE handling and dispatch code has been completely overhauled 12489in preparation for support of GPE Block Devices (ID ACPI0006). 12490This affects internal data structures and code only; there should 12491be no differences visible externally. One new file has been 12492added, evgpeblk.c 12493 12494The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 12495fields that are used to determine the GPE block lengths. The 12496REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 12497structures are ignored. This is per the ACPI specification but it 12498isn't very clear. The full 256 Block 0/1 GPEs are now supported 12499(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 12500 12501In the SCI interrupt handler, removed the read of the PM1_CONTROL 12502register to look at the SCI_EN bit. On some machines, this read 12503causes an SMI event and greatly slows down SCI events. (This may 12504in fact be the cause of slow battery status response on some 12505systems.) 12506 12507Fixed a problem where a store of a NULL string to a package object 12508could cause the premature deletion of the object. This was seen 12509during execution of the battery _BIF method on some systems, 12510resulting in no battery data being returned. 12511 12512Added AcpiWalkResources interface to simplify parsing of resource 12513lists. 12514 12515Code and Data Size: Current core subsystem library sizes are shown 12516below. These are the code and data sizes for the acpica.lib 12517produced by the Microsoft Visual C++ 6.0 compiler, and these 12518values do not include any ACPI driver or OSPM code. The debug 12519version of the code includes the debug output trace mechanism and 12520has a much larger code and data size. Note that these values will 12521vary depending on the efficiency of the compiler and the compiler 12522options used during generation. 12523 12524 Previous Release 12525 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12526 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12527 Current Release: 12528 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12529 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12530 12531 125322) Linux 12533 12534S3 fixes (Ole Rohne) 12535 12536Update ACPI PHP driver with to use new acpi_walk_resource API 12537(Bjorn Helgaas) 12538 12539Add S4BIOS support (Pavel Machek) 12540 12541Map in entire table before performing checksum (John Stultz) 12542 12543Expand the mem= cmdline to allow the specification of reserved and 12544ACPI DATA blocks (Pavel Machek) 12545 12546Never use ACPI on VISWS 12547 12548Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 12549 12550Revert a change that allowed P_BLK lengths to be 4 or 5. This is 12551causing us to think that some systems support C2 when they really 12552don't. 12553 12554Do not count processor objects for non-present CPUs (Thanks to 12555Dominik Brodowski) 12556 12557 125583) iASL Compiler: 12559 12560Fixed a problem where ASL include files could not be found and 12561opened. 12562 12563Added support for the _PDC reserved name. 12564 12565 12566---------------------------------------- 1256722 January 2003. Summary of changes for version 20030122. 12568 12569 125701) ACPI CA Core Subsystem: 12571 12572Added a check for constructs of the form: Store (Local0, Local0) 12573where Local0 is not initialized. Apparently, some BIOS 12574programmers believe that this is a NOOP. Since this store doesn't 12575do anything anyway, the new prototype behavior will ignore this 12576error. This is a case where we can relax the strict checking in 12577the interpreter in the name of compatibility. 12578 12579 125802) Linux 12581 12582The AcpiSrc Source Conversion Utility has been released with the 12583Linux package for the first time. This is the utility that is 12584used to convert the ACPI CA base source code to the Linux version. 12585 12586(Both) Handle P_BLK lengths shorter than 6 more gracefully 12587 12588(Both) Move more headers to include/acpi, and delete an unused 12589header. 12590 12591(Both) Move drivers/acpi/include directory to include/acpi 12592 12593(Both) Boot functions don't use cmdline, so don't pass it around 12594 12595(Both) Remove include of unused header (Adrian Bunk) 12596 12597(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 12598the 12599former now also includes the latter, acpiphp.h only needs the one, 12600now. 12601 12602(2.5) Make it possible to select method of bios restoring after S3 12603resume. [=> no more ugly ifdefs] (Pavel Machek) 12604 12605(2.5) Make proc write interfaces work (Pavel Machek) 12606 12607(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 12608 12609(2.5) Break out ACPI Perf code into its own module, under cpufreq 12610(Dominik Brodowski) 12611 12612(2.4) S4BIOS support (Ducrot Bruno) 12613 12614(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 12615Visinoni) 12616 12617 126183) iASL Compiler: 12619 12620Added support to disassemble SSDT and PSDTs. 12621 12622Implemented support to obtain SSDTs from the Windows registry if 12623available. 12624 12625 12626---------------------------------------- 1262709 January 2003. Summary of changes for version 20030109. 12628 126291) ACPI CA Core Subsystem: 12630 12631Changed the behavior of the internal Buffer-to-String conversion 12632function. The current ACPI specification states that the contents 12633of the buffer are "converted to a string of two-character 12634hexadecimal numbers, each separated by a space". Unfortunately, 12635this definition is not backwards compatible with existing ACPI 1.0 12636implementations (although the behavior was not defined in the ACPI 126371.0 specification). The new behavior simply copies data from the 12638buffer to the string until a null character is found or the end of 12639the buffer is reached. The new String object is always null 12640terminated. This problem was seen during the generation of _BIF 12641battery data where incorrect strings were returned for battery 12642type, etc. This will also require an errata to the ACPI 12643specification. 12644 12645Renamed all instances of NATIVE_UINT and NATIVE_INT to 12646ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 12647 12648Copyright in all module headers (both Linux and non-Linux) has be 12649updated to 2003. 12650 12651Code and Data Size: Current core subsystem library sizes are shown 12652below. These are the code and data sizes for the acpica.lib 12653produced by the Microsoft Visual C++ 6.0 compiler, and these 12654values do not include any ACPI driver or OSPM code. The debug 12655version of the code includes the debug output trace mechanism and 12656has a much larger code and data size. Note that these values will 12657vary depending on the efficiency of the compiler and the compiler 12658options used during generation. 12659 12660 Previous Release 12661 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12662 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12663 Current Release: 12664 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12665 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12666 12667 126682) Linux 12669 12670Fixed an oops on module insertion/removal (Matthew Tippett) 12671 12672(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 12673 12674(2.5) Replace pr_debug (Randy Dunlap) 12675 12676(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 12677 12678(Both) Eliminate spawning of thread from timer callback, in favor 12679of schedule_work() 12680 12681(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 12682 12683(Both) Added define for Fixed Function HW region (Matthew Wilcox) 12684 12685(Both) Add missing statics to button.c (Pavel Machek) 12686 12687Several changes have been made to the source code translation 12688utility that generates the Linux Code in order to make the code 12689more "Linux-like": 12690 12691All typedefs on structs and unions have been removed in keeping 12692with the Linux coding style. 12693 12694Removed the non-Linux SourceSafe module revision number from each 12695module header. 12696 12697Completed major overhaul of symbols to be lowercased for linux. 12698Doubled the number of symbols that are lowercased. 12699 12700Fixed a problem where identifiers within procedure headers and 12701within quotes were not fully lower cased (they were left with a 12702starting capital.) 12703 12704Some C macros whose only purpose is to allow the generation of 16- 12705bit code are now completely removed in the Linux code, increasing 12706readability and maintainability. 12707 12708---------------------------------------- 12709 1271012 December 2002. Summary of changes for version 20021212. 12711 12712 127131) ACPI CA Core Subsystem: 12714 12715Fixed a problem where the creation of a zero-length AML Buffer 12716would cause a fault. 12717 12718Fixed a problem where a Buffer object that pointed to a static AML 12719buffer (in an ACPI table) could inadvertently be deleted, causing 12720memory corruption. 12721 12722Fixed a problem where a user buffer (passed in to the external 12723ACPI CA interfaces) could be overwritten if the buffer was too 12724small to complete the operation, causing memory corruption. 12725 12726Fixed a problem in the Buffer-to-String conversion code where a 12727string of length one was always returned, regardless of the size 12728of the input Buffer object. 12729 12730Removed the NATIVE_CHAR data type across the entire source due to 12731lack of need and lack of consistent use. 12732 12733Code and Data Size: Current core subsystem library sizes are shown 12734below. These are the code and data sizes for the acpica.lib 12735produced by the Microsoft Visual C++ 6.0 compiler, and these 12736values do not include any ACPI driver or OSPM code. The debug 12737version of the code includes the debug output trace mechanism and 12738has a much larger code and data size. Note that these values will 12739vary depending on the efficiency of the compiler and the compiler 12740options used during generation. 12741 12742 Previous Release 12743 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12744 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12745 Current Release: 12746 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12747 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12748 12749 12750---------------------------------------- 1275105 December 2002. Summary of changes for version 20021205. 12752 127531) ACPI CA Core Subsystem: 12754 12755Fixed a problem where a store to a String or Buffer object could 12756cause corruption of the DSDT if the object type being stored was 12757the same as the target object type and the length of the object 12758being stored was equal to or smaller than the original (existing) 12759target object. This was seen to cause corruption of battery _BIF 12760buffers if the _BIF method modified the buffer on the fly. 12761 12762Fixed a problem where an internal error was generated if a control 12763method invocation was used in an OperationRegion, Buffer, or 12764Package declaration. This was caused by the deferred parsing of 12765the control method and thus the deferred creation of the internal 12766method object. The solution to this problem was to create the 12767internal method object at the moment the method is encountered in 12768the first pass - so that subsequent references to the method will 12769able to obtain the required parameter count and thus properly 12770parse the method invocation. This problem presented itself as an 12771AE_AML_INTERNAL during the pass 1 parse phase during table load. 12772 12773Fixed a problem where the internal String object copy routine did 12774not always allocate sufficient memory for the target String object 12775and caused memory corruption. This problem was seen to cause 12776"Allocation already present in list!" errors as memory allocation 12777became corrupted. 12778 12779Implemented a new function for the evaluation of namespace objects 12780that allows the specification of the allowable return object 12781types. This simplifies a lot of code that checks for a return 12782object of one or more specific objects returned from the 12783evaluation (such as _STA, etc.) This may become and external 12784function if it would be useful to ACPI-related drivers. 12785 12786Completed another round of prefixing #defines with "ACPI_" for 12787clarity. 12788 12789Completed additional code restructuring to allow more modular 12790linking for iASL compiler and AcpiExec. Several files were split 12791creating new files. New files: nsparse.c dsinit.c evgpe.c 12792 12793Implemented an abort mechanism to terminate an executing control 12794method via the AML debugger. This feature is useful for debugging 12795control methods that depend (wait) for specific hardware 12796responses. 12797 12798Code and Data Size: Current core subsystem library sizes are shown 12799below. These are the code and data sizes for the acpica.lib 12800produced by the Microsoft Visual C++ 6.0 compiler, and these 12801values do not include any ACPI driver or OSPM code. The debug 12802version of the code includes the debug output trace mechanism and 12803has a much larger code and data size. Note that these values will 12804vary depending on the efficiency of the compiler and the compiler 12805options used during generation. 12806 12807 Previous Release 12808 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12809 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12810 Current Release: 12811 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12812 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12813 12814 128152) iASL Compiler/Disassembler 12816 12817Fixed a compiler code generation problem for "Interrupt" Resource 12818Descriptors. If specified in the ASL, the optional "Resource 12819Source Index" and "Resource Source" fields were not inserted into 12820the correct location within the AML resource descriptor, creating 12821an invalid descriptor. 12822 12823Fixed a disassembler problem for "Interrupt" resource descriptors. 12824The optional "Resource Source Index" and "Resource Source" fields 12825were ignored. 12826 12827 12828---------------------------------------- 1282922 November 2002. Summary of changes for version 20021122. 12830 12831 128321) ACPI CA Core Subsystem: 12833 12834Fixed a reported problem where an object stored to a Method Local 12835or Arg was not copied to a new object during the store - the 12836object pointer was simply copied to the Local/Arg. This caused 12837all subsequent operations on the Local/Arg to also affect the 12838original source of the store operation. 12839 12840Fixed a problem where a store operation to a Method Local or Arg 12841was not completed properly if the Local/Arg contained a reference 12842(from RefOf) to a named field. The general-purpose store-to- 12843namespace-node code is now used so that this case is handled 12844automatically. 12845 12846Fixed a problem where the internal object copy routine would cause 12847a protection fault if the object being copied was a Package and 12848contained either 1) a NULL package element or 2) a nested sub- 12849package. 12850 12851Fixed a problem with the GPE initialization that resulted from an 12852ambiguity in the ACPI specification. One section of the 12853specification states that both the address and length of the GPE 12854block must be zero if the block is not supported. Another section 12855implies that only the address need be zero if the block is not 12856supported. The code has been changed so that both the address and 12857the length must be non-zero to indicate a valid GPE block (i.e., 12858if either the address or the length is zero, the GPE block is 12859invalid.) 12860 12861Code and Data Size: Current core subsystem library sizes are shown 12862below. These are the code and data sizes for the acpica.lib 12863produced by the Microsoft Visual C++ 6.0 compiler, and these 12864values do not include any ACPI driver or OSPM code. The debug 12865version of the code includes the debug output trace mechanism and 12866has a much larger code and data size. Note that these values will 12867vary depending on the efficiency of the compiler and the compiler 12868options used during generation. 12869 12870 Previous Release 12871 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12872 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12873 Current Release: 12874 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12875 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12876 12877 128782) Linux 12879 12880Cleaned up EC driver. Exported an external EC read/write 12881interface. By going through this, other drivers (most notably 12882sonypi) will be able to serialize access to the EC. 12883 12884 128853) iASL Compiler/Disassembler 12886 12887Implemented support to optionally generate include files for both 12888ASM and C (the -i switch). This simplifies BIOS development by 12889automatically creating include files that contain external 12890declarations for the symbols that are created within the 12891 12892(optionally generated) ASM and C AML source files. 12893 12894 12895---------------------------------------- 1289615 November 2002. Summary of changes for version 20021115. 12897 128981) ACPI CA Core Subsystem: 12899 12900Fixed a memory leak problem where an error during resolution of 12901 12902method arguments during a method invocation from another method 12903failed to cleanup properly by deleting all successfully resolved 12904argument objects. 12905 12906Fixed a problem where the target of the Index() operator was not 12907correctly constructed if the source object was a package. This 12908problem has not been detected because the use of a target operand 12909with Index() is very rare. 12910 12911Fixed a problem with the Index() operator where an attempt was 12912made to delete the operand objects twice. 12913 12914Fixed a problem where an attempt was made to delete an operand 12915twice during execution of the CondRefOf() operator if the target 12916did not exist. 12917 12918Implemented the first of perhaps several internal create object 12919functions that create and initialize a specific object type. This 12920consolidates duplicated code wherever the object is created, thus 12921shrinking the size of the subsystem. 12922 12923Implemented improved debug/error messages for errors that occur 12924during nested method invocations. All executing method pathnames 12925are displayed (with the error) as the call stack is unwound - thus 12926simplifying debug. 12927 12928Fixed a problem introduced in the 10/02 release that caused 12929premature deletion of a buffer object if a buffer was used as an 12930ASL operand where an integer operand is required (Thus causing an 12931implicit object conversion from Buffer to Integer.) The change in 12932the 10/02 release was attempting to fix a memory leak (albeit 12933incorrectly.) 12934 12935Code and Data Size: Current core subsystem library sizes are shown 12936below. These are the code and data sizes for the acpica.lib 12937produced by the Microsoft Visual C++ 6.0 compiler, and these 12938values do not include any ACPI driver or OSPM code. The debug 12939version of the code includes the debug output trace mechanism and 12940has a much larger code and data size. Note that these values will 12941vary depending on the efficiency of the compiler and the compiler 12942options used during generation. 12943 12944 Previous Release 12945 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12946 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12947 Current Release: 12948 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12949 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12950 12951 129522) Linux 12953 12954Changed the implementation of the ACPI semaphores to use down() 12955instead of down_interruptable(). It is important that the 12956execution of ACPI control methods not be interrupted by signals. 12957Methods must run to completion, or the system may be left in an 12958unknown/unstable state. 12959 12960Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 12961(Shawn Starr) 12962 12963 129643) iASL Compiler/Disassembler 12965 12966 12967Changed the default location of output files. All output files 12968are now placed in the current directory by default instead of in 12969the directory of the source file. This change may affect some 12970existing makefiles, but it brings the behavior of the compiler in 12971line with other similar tools. The location of the output files 12972can be overridden with the -p command line switch. 12973 12974 12975---------------------------------------- 1297611 November 2002. Summary of changes for version 20021111. 12977 12978 129790) ACPI Specification 2.0B is released and is now available at: 12980http://www.acpi.info/index.html 12981 12982 129831) ACPI CA Core Subsystem: 12984 12985Implemented support for the ACPI 2.0 SMBus Operation Regions. 12986This includes the early detection and handoff of the request to 12987the SMBus region handler (avoiding all of the complex field 12988support code), and support for the bidirectional return packet 12989from an SMBus write operation. This paves the way for the 12990development of SMBus drivers in each host operating system. 12991 12992Fixed a problem where the semaphore WAIT_FOREVER constant was 12993defined as 32 bits, but must be 16 bits according to the ACPI 12994specification. This had the side effect of causing ASL 12995Mutex/Event timeouts even though the ASL code requested a wait 12996forever. Changed all internal references to the ACPI timeout 12997parameter to 16 bits to prevent future problems. Changed the name 12998of WAIT_FOREVER to ACPI_WAIT_FOREVER. 12999 13000Code and Data Size: Current core subsystem library sizes are shown 13001below. These are the code and data sizes for the acpica.lib 13002produced by the Microsoft Visual C++ 6.0 compiler, and these 13003values do not include any ACPI driver or OSPM code. The debug 13004version of the code includes the debug output trace mechanism and 13005has a much larger code and data size. Note that these values will 13006vary depending on the efficiency of the compiler and the compiler 13007options used during generation. 13008 13009 Previous Release 13010 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13011 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13012 Current Release: 13013 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13014 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13015 13016 130172) Linux 13018 13019Module loading/unloading fixes (John Cagle) 13020 13021 130223) iASL Compiler/Disassembler 13023 13024Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 13025 13026Implemented support for the disassembly of all SMBus protocol 13027keywords (SMBQuick, SMBWord, etc.) 13028 13029---------------------------------------- 1303001 November 2002. Summary of changes for version 20021101. 13031 13032 130331) ACPI CA Core Subsystem: 13034 13035Fixed a problem where platforms that have a GPE1 block but no GPE0 13036block were not handled correctly. This resulted in a "GPE 13037overlap" error message. GPE0 is no longer required. 13038 13039Removed code added in the previous release that inserted nodes 13040into the namespace in alphabetical order. This caused some side- 13041effects on various machines. The root cause of the problem is 13042still under investigation since in theory, the internal ordering 13043of the namespace nodes should not matter. 13044 13045 13046Enhanced error reporting for the case where a named object is not 13047found during control method execution. The full ACPI namepath 13048(name reference) of the object that was not found is displayed in 13049this case. 13050 13051Note: as a result of the overhaul of the namespace object types in 13052the previous release, the namespace nodes for the predefined 13053scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 13054instead of ACPI_TYPE_ANY. This simplifies the namespace 13055management code but may affect code that walks the namespace tree 13056looking for specific object types. 13057 13058Code and Data Size: Current core subsystem library sizes are shown 13059below. These are the code and data sizes for the acpica.lib 13060produced by the Microsoft Visual C++ 6.0 compiler, and these 13061values do not include any ACPI driver or OSPM code. The debug 13062version of the code includes the debug output trace mechanism and 13063has a much larger code and data size. Note that these values will 13064vary depending on the efficiency of the compiler and the compiler 13065options used during generation. 13066 13067 Previous Release 13068 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13069 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13070 Current Release: 13071 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13072 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13073 13074 130752) Linux 13076 13077Fixed a problem introduced in the previous release where the 13078Processor and Thermal objects were not recognized and installed in 13079/proc. This was related to the scope type change described above. 13080 13081 130823) iASL Compiler/Disassembler 13083 13084Implemented the -g option to get all of the required ACPI tables 13085from the registry and save them to files (Windows version of the 13086compiler only.) The required tables are the FADT, FACS, and DSDT. 13087 13088Added ACPI table checksum validation during table disassembly in 13089order to catch corrupted tables. 13090 13091 13092---------------------------------------- 1309322 October 2002. Summary of changes for version 20021022. 13094 130951) ACPI CA Core Subsystem: 13096 13097Implemented a restriction on the Scope operator that the target 13098must already exist in the namespace at the time the operator is 13099encountered (during table load or method execution). In other 13100words, forward references are not allowed and Scope() cannot 13101create a new object. This changes the previous behavior where the 13102interpreter would create the name if not found. This new behavior 13103correctly enables the search-to-root algorithm during namespace 13104lookup of the target name. Because of this upsearch, this fixes 13105the known Compaq _SB_.OKEC problem and makes both the AML 13106interpreter and iASL compiler compatible with other ACPI 13107implementations. 13108 13109Completed a major overhaul of the internal ACPI object types for 13110the ACPI Namespace and the associated operand objects. Many of 13111these types had become obsolete with the introduction of the two- 13112pass namespace load. This cleanup simplifies the code and makes 13113the entire namespace load mechanism much clearer and easier to 13114understand. 13115 13116Improved debug output for tracking scope opening/closing to help 13117diagnose scoping issues. The old scope name as well as the new 13118scope name are displayed. Also improved error messages for 13119problems with ASL Mutex objects and error messages for GPE 13120problems. 13121 13122Cleaned up the namespace dump code, removed obsolete code. 13123 13124All string output (for all namespace/object dumps) now uses the 13125common ACPI string output procedure which handles escapes properly 13126and does not emit non-printable characters. 13127 13128Fixed some issues with constants in the 64-bit version of the 13129local C library (utclib.c) 13130 13131 131322) Linux 13133 13134EC Driver: No longer attempts to acquire the Global Lock at 13135interrupt level. 13136 13137 131383) iASL Compiler/Disassembler 13139 13140Implemented ACPI 2.0B grammar change that disallows all Type 1 and 131412 opcodes outside of a control method. This means that the 13142"executable" operators (versus the "namespace" operators) cannot 13143be used at the table level; they can only be used within a control 13144method. 13145 13146Implemented the restriction on the Scope() operator where the 13147target must already exist in the namespace at the time the 13148operator is encountered (during ASL compilation). In other words, 13149forward references are not allowed and Scope() cannot create a new 13150object. This makes the iASL compiler compatible with other ACPI 13151implementations and makes the Scope() implementation adhere to the 13152ACPI specification. 13153 13154Fixed a problem where namepath optimization for the Alias operator 13155was optimizing the wrong path (of the two namepaths.) This caused 13156a "Missing alias link" error message. 13157 13158Fixed a problem where an "unknown reserved name" warning could be 13159incorrectly generated for names like "_SB" when the trailing 13160underscore is not used in the original ASL. 13161 13162Fixed a problem where the reserved name check did not handle 13163NamePaths with multiple NameSegs correctly. The first nameseg of 13164the NamePath was examined instead of the last NameSeg. 13165 13166 13167---------------------------------------- 13168 1316902 October 2002. Summary of changes for this release. 13170 13171 131721) ACPI CA Core Subsystem version 20021002: 13173 13174Fixed a problem where a store/copy of a string to an existing 13175string did not always set the string length properly in the String 13176object. 13177 13178Fixed a reported problem with the ToString operator where the 13179behavior was identical to the ToHexString operator instead of just 13180simply converting a raw buffer to a string data type. 13181 13182Fixed a problem where CopyObject and the other "explicit" 13183conversion operators were not updating the internal namespace node 13184type as part of the store operation. 13185 13186Fixed a memory leak during implicit source operand conversion 13187where the original object was not deleted if it was converted to a 13188new object of a different type. 13189 13190Enhanced error messages for all problems associated with namespace 13191lookups. Common procedure generates and prints the lookup name as 13192well as the formatted status. 13193 13194Completed implementation of a new design for the Alias support 13195within the namespace. The existing design did not handle the case 13196where a new object was assigned to one of the two names due to the 13197use of an explicit conversion operator, resulting in the two names 13198pointing to two different objects. The new design simply points 13199the Alias name to the original name node - not to the object. 13200This results in a level of indirection that must be handled in the 13201name resolution mechanism. 13202 13203Code and Data Size: Current core subsystem library sizes are shown 13204below. These are the code and data sizes for the acpica.lib 13205produced by the Microsoft Visual C++ 6.0 compiler, and these 13206values do not include any ACPI driver or OSPM code. The debug 13207version of the code includes the debug output trace mechanism and 13208has a larger code and data size. Note that these values will vary 13209depending on the efficiency of the compiler and the compiler 13210options used during generation. 13211 13212 Previous Release 13213 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13214 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13215 Current Release: 13216 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13217 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13218 13219 132202) Linux 13221 13222Initialize thermal driver's timer before it is used. (Knut 13223Neumann) 13224 13225Allow handling negative celsius values. (Kochi Takayoshi) 13226 13227Fix thermal management and make trip points. R/W (Pavel Machek) 13228 13229Fix /proc/acpi/sleep. (P. Christeas) 13230 13231IA64 fixes. (David Mosberger) 13232 13233Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 13234 13235Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 13236Brodowski) 13237 13238 132393) iASL Compiler/Disassembler 13240 13241Clarified some warning/error messages. 13242 13243 13244---------------------------------------- 1324518 September 2002. Summary of changes for this release. 13246 13247 132481) ACPI CA Core Subsystem version 20020918: 13249 13250Fixed a reported problem with reference chaining (via the Index() 13251and RefOf() operators) in the ObjectType() and SizeOf() operators. 13252The definition of these operators includes the dereferencing of 13253all chained references to return information on the base object. 13254 13255Fixed a problem with stores to indexed package elements - the 13256existing code would not complete the store if an "implicit 13257conversion" was not performed. In other words, if the existing 13258object (package element) was to be replaced completely, the code 13259didn't handle this case. 13260 13261Relaxed typechecking on the ASL "Scope" operator to allow the 13262target name to refer to an object of type Integer, String, or 13263Buffer, in addition to the scoping object types (Device, 13264predefined Scopes, Processor, PowerResource, and ThermalZone.) 13265This allows existing AML code that has workarounds for a bug in 13266Windows to function properly. A warning is issued, however. This 13267affects both the AML interpreter and the iASL compiler. Below is 13268an example of this type of ASL code: 13269 13270 Name(DEB,0x00) 13271 Scope(DEB) 13272 { 13273 13274Fixed some reported problems with 64-bit integer support in the 13275local implementation of C library functions (clib.c) 13276 13277 132782) Linux 13279 13280Use ACPI fix map region instead of IOAPIC region, since it is 13281undefined in non-SMP. 13282 13283Ensure that the SCI has the proper polarity and trigger, even on 13284systems that do not have an interrupt override entry in the MADT. 13285 132862.5 big driver reorganization (Pat Mochel) 13287 13288Use early table mapping code from acpitable.c (Andi Kleen) 13289 13290New blacklist entries (Andi Kleen) 13291 13292Blacklist improvements. Split blacklist code out into a separate 13293file. Move checking the blacklist to very early. Previously, we 13294would use ACPI tables, and then halfway through init, check the 13295blacklist -- too late. Now, it's early enough to completely fall- 13296back to non-ACPI. 13297 13298 132993) iASL Compiler/Disassembler version 20020918: 13300 13301Fixed a problem where the typechecking code didn't know that an 13302alias could point to a method. In other words, aliases were not 13303being dereferenced during typechecking. 13304 13305 13306---------------------------------------- 1330729 August 2002. Summary of changes for this release. 13308 133091) ACPI CA Core Subsystem Version 20020829: 13310 13311If the target of a Scope() operator already exists, it must be an 13312object type that actually opens a scope -- such as a Device, 13313Method, Scope, etc. This is a fatal runtime error. Similar error 13314check has been added to the iASL compiler also. 13315 13316Tightened up the namespace load to disallow multiple names in the 13317same scope. This previously was allowed if both objects were of 13318the same type. (i.e., a lookup was the same as entering a new 13319name). 13320 13321 133222) Linux 13323 13324Ensure that the ACPI interrupt has the proper trigger and 13325polarity. 13326 13327local_irq_disable is extraneous. (Matthew Wilcox) 13328 13329Make "acpi=off" actually do what it says, and not use the ACPI 13330interpreter *or* the tables. 13331 13332Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 13333Takayoshi) 13334 13335 133363) iASL Compiler/Disassembler Version 20020829: 13337 13338Implemented namepath optimization for name declarations. For 13339example, a declaration like "Method (\_SB_.ABCD)" would get 13340optimized to "Method (ABCD)" if the declaration is within the 13341\_SB_ scope. This optimization is in addition to the named 13342reference path optimization first released in the previous 13343version. This would seem to complete all possible optimizations 13344for namepaths within the ASL/AML. 13345 13346If the target of a Scope() operator already exists, it must be an 13347object type that actually opens a scope -- such as a Device, 13348Method, Scope, etc. 13349 13350Implemented a check and warning for unreachable code in the same 13351block below a Return() statement. 13352 13353Fixed a problem where the listing file was not generated if the 13354compiler aborted if the maximum error count was exceeded (200). 13355 13356Fixed a problem where the typechecking of method return values was 13357broken. This includes the check for a return value when the 13358method is invoked as a TermArg (a return value is expected.) 13359 13360Fixed a reported problem where EOF conditions during a quoted 13361string or comment caused a fault. 13362 13363 13364---------------------------------------- 1336515 August 2002. Summary of changes for this release. 13366 133671) ACPI CA Core Subsystem Version 20020815: 13368 13369Fixed a reported problem where a Store to a method argument that 13370contains a reference did not perform the indirect store correctly. 13371This problem was created during the conversion to the new 13372reference object model - the indirect store to a method argument 13373code was not updated to reflect the new model. 13374 13375Reworked the ACPI mode change code to better conform to ACPI 2.0, 13376handle corner cases, and improve code legibility (Kochi Takayoshi) 13377 13378Fixed a problem with the pathname parsing for the carat (^) 13379prefix. The heavy use of the carat operator by the new namepath 13380optimization in the iASL compiler uncovered a problem with the AML 13381interpreter handling of this prefix. In the case where one or 13382more carats precede a single nameseg, the nameseg was treated as 13383standalone and the search rule (to root) was inadvertently 13384applied. This could cause both the iASL compiler and the 13385interpreter to find the wrong object or to miss the error that 13386should occur if the object does not exist at that exact pathname. 13387 13388Found and fixed the problem where the HP Pavilion DSDT would not 13389load. This was a relatively minor tweak to the table loading code 13390(a problem caused by the unexpected encounter with a method 13391invocation not within a control method), but it does not solve the 13392overall issue of the execution of AML code at the table level. 13393This investigation is still ongoing. 13394 13395Code and Data Size: Current core subsystem library sizes are shown 13396below. These are the code and data sizes for the acpica.lib 13397produced by the Microsoft Visual C++ 6.0 compiler, and these 13398values do not include any ACPI driver or OSPM code. The debug 13399version of the code includes the debug output trace mechanism and 13400has a larger code and data size. Note that these values will vary 13401depending on the efficiency of the compiler and the compiler 13402options used during generation. 13403 13404 Previous Release 13405 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13406 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13407 Current Release: 13408 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13409 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13410 13411 134122) Linux 13413 13414Remove redundant slab.h include (Brad Hards) 13415 13416Fix several bugs in thermal.c (Herbert Nachtnebel) 13417 13418Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 13419 13420Change acpi_system_suspend to use updated irq functions (Pavel 13421Machek) 13422 13423Export acpi_get_firmware_table (Matthew Wilcox) 13424 13425Use proper root proc entry for ACPI (Kochi Takayoshi) 13426 13427Fix early-boot table parsing (Bjorn Helgaas) 13428 13429 134303) iASL Compiler/Disassembler 13431 13432Reworked the compiler options to make them more consistent and to 13433use two-letter options where appropriate. We were running out of 13434sensible letters. This may break some makefiles, so check the 13435current options list by invoking the compiler with no parameters. 13436 13437Completed the design and implementation of the ASL namepath 13438optimization option for the compiler. This option optimizes all 13439references to named objects to the shortest possible path. The 13440first attempt tries to utilize a single nameseg (4 characters) and 13441the "search-to-root" algorithm used by the interpreter. If that 13442cannot be used (because either the name is not in the search path 13443or there is a conflict with another object with the same name), 13444the pathname is optimized using the carat prefix (usually a 13445shorter string than specifying the entire path from the root.) 13446 13447Implemented support to obtain the DSDT from the Windows registry 13448(when the disassembly option is specified with no input file). 13449Added this code as the implementation for AcpiOsTableOverride in 13450the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 13451utility) to scan memory for the DSDT to the AcpiOsTableOverride 13452function in the DOS OSL to make the disassembler truly OS 13453independent. 13454 13455Implemented a new option to disassemble and compile in one step. 13456When used without an input filename, this option will grab the 13457DSDT from the local machine, disassemble it, and compile it in one 13458step. 13459 13460Added a warning message for invalid escapes (a backslash followed 13461by any character other than the allowable escapes). This catches 13462the quoted string error "\_SB_" (which should be "\\_SB_" ). 13463 13464Also, there are numerous instances in the ACPI specification where 13465this error occurs. 13466 13467Added a compiler option to disable all optimizations. This is 13468basically the "compatibility mode" because by using this option, 13469the AML code will come out exactly the same as other ASL 13470compilers. 13471 13472Added error messages for incorrectly ordered dependent resource 13473functions. This includes: missing EndDependentFn macro at end of 13474dependent resource list, nested dependent function macros (both 13475start and end), and missing StartDependentFn macro. These are 13476common errors that should be caught at compile time. 13477 13478Implemented _OSI support for the disassembler and compiler. _OSI 13479must be included in the namespace for proper disassembly (because 13480the disassembler must know the number of arguments.) 13481 13482Added an "optimization" message type that is optional (off by 13483default). This message is used for all optimizations - including 13484constant folding, integer optimization, and namepath optimization. 13485 13486---------------------------------------- 1348725 July 2002. Summary of changes for this release. 13488 13489 134901) ACPI CA Core Subsystem Version 20020725: 13491 13492The AML Disassembler has been enhanced to produce compilable ASL 13493code and has been integrated into the iASL compiler (see below) as 13494well as the single-step disassembly for the AML debugger and the 13495disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 13496resource templates and macros are fully supported. The 13497disassembler has been tested on over 30 different AML files, 13498producing identical AML when the resulting disassembled ASL file 13499is recompiled with the same ASL compiler. 13500 13501Modified the Resource Manager to allow zero interrupts and zero 13502dma channels during the GetCurrentResources call. This was 13503causing problems on some platforms. 13504 13505Added the AcpiOsRedirectOutput interface to the OSL to simplify 13506output redirection for the AcpiOsPrintf and AcpiOsVprintf 13507interfaces. 13508 13509Code and Data Size: Current core subsystem library sizes are shown 13510below. These are the code and data sizes for the acpica.lib 13511produced by the Microsoft Visual C++ 6.0 compiler, and these 13512values do not include any ACPI driver or OSPM code. The debug 13513version of the code includes the debug output trace mechanism and 13514has a larger code and data size. Note that these values will vary 13515depending on the efficiency of the compiler and the compiler 13516options used during generation. 13517 13518 Previous Release 13519 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13520 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13521 Current Release: 13522 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13523 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13524 13525 135262) Linux 13527 13528Fixed a panic in the EC driver (Dominik Brodowski) 13529 13530Implemented checksum of the R/XSDT itself during Linux table scan 13531(Richard Schaal) 13532 13533 135343) iASL compiler 13535 13536The AML disassembler is integrated into the compiler. The "-d" 13537option invokes the disassembler to completely disassemble an 13538input AML file, producing as output a text ASL file with the 13539extension ".dsl" (to avoid name collisions with existing .asl 13540source files.) A future enhancement will allow the disassembler 13541to obtain the BIOS DSDT from the registry under Windows. 13542 13543Fixed a problem with the VendorShort and VendorLong resource 13544descriptors where an invalid AML sequence was created. 13545 13546Implemented a fix for BufferData term in the ASL parser. It was 13547inadvertently defined twice, allowing invalid syntax to pass and 13548causing reduction conflicts. 13549 13550Fixed a problem where the Ones opcode could get converted to a 13551value of zero if "Ones" was used where a byte, word or dword value 13552was expected. The 64-bit value is now truncated to the correct 13553size with the correct value. 13554 13555 13556 13557---------------------------------------- 1355802 July 2002. Summary of changes for this release. 13559 13560 135611) ACPI CA Core Subsystem Version 20020702: 13562 13563The Table Manager code has been restructured to add several new 13564features. Tables that are not required by the core subsystem 13565(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 13566validated in any way and are returned from AcpiGetFirmwareTable if 13567requested. The AcpiOsTableOverride interface is now called for 13568each table that is loaded by the subsystem in order to allow the 13569host to override any table it chooses. Previously, only the DSDT 13570could be overridden. Added one new files, tbrsdt.c and 13571tbgetall.c. 13572 13573Fixed a problem with the conversion of internal package objects to 13574external objects (when a package is returned from a control 13575method.) The return buffer length was set to zero instead of the 13576proper length of the package object. 13577 13578Fixed a reported problem with the use of the RefOf and DeRefOf 13579operators when passing reference arguments to control methods. A 13580new type of Reference object is used internally for references 13581produced by the RefOf operator. 13582 13583Added additional error messages in the Resource Manager to explain 13584AE_BAD_DATA errors when they occur during resource parsing. 13585 13586Split the AcpiEnableSubsystem into two primitives to enable a 13587finer granularity initialization sequence. These two calls should 13588be called in this order: AcpiEnableSubsystem (flags), 13589AcpiInitializeObjects (flags). The flags parameter remains the 13590same. 13591 13592 135932) Linux 13594 13595Updated the ACPI utilities module to understand the new style of 13596fully resolved package objects that are now returned from the core 13597subsystem. This eliminates errors of the form: 13598 13599 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 13600 acpi_utils-0430 [145] acpi_evaluate_reference: 13601 Invalid element in package (not a device reference) 13602 13603The method evaluation utility uses the new buffer allocation 13604scheme instead of calling AcpiEvaluate Object twice. 13605 13606Added support for ECDT. This allows the use of the Embedded 13607 13608Controller before the namespace has been fully initialized, which 13609is necessary for ACPI 2.0 support, and for some laptops to 13610initialize properly. (Laptops using ECDT are still rare, so only 13611limited testing was performed of the added functionality.) 13612 13613Fixed memory leaks in the EC driver. 13614 13615Eliminated a brittle code structure in acpi_bus_init(). 13616 13617Eliminated the acpi_evaluate() helper function in utils.c. It is 13618no longer needed since acpi_evaluate_object can optionally 13619allocate memory for the return object. 13620 13621Implemented fix for keyboard hang when getting battery readings on 13622some systems (Stephen White) 13623 13624PCI IRQ routing update (Dominik Brodowski) 13625 13626Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 13627support 13628 13629---------------------------------------- 1363011 June 2002. Summary of changes for this release. 13631 13632 136331) ACPI CA Core Subsystem Version 20020611: 13634 13635Fixed a reported problem where constants such as Zero and One 13636appearing within _PRT packages were not handled correctly within 13637the resource manager code. Originally reported against the ASL 13638compiler because the code generator now optimizes integers to 13639their minimal AML representation (i.e. AML constants if possible.) 13640The _PRT code now handles all AML constant opcodes correctly 13641(Zero, One, Ones, Revision). 13642 13643Fixed a problem with the Concatenate operator in the AML 13644interpreter where a buffer result object was incorrectly marked as 13645not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 13646 13647All package sub-objects are now fully resolved before they are 13648returned from the external ACPI interfaces. This means that name 13649strings are resolved to object handles, and constant operators 13650(Zero, One, Ones, Revision) are resolved to Integers. 13651 13652Implemented immediate resolution of the AML Constant opcodes 13653(Zero, One, Ones, Revision) to Integer objects upon detection 13654within the AML stream. This has simplified and reduced the 13655generated code size of the subsystem by eliminating about 10 13656switch statements for these constants (which previously were 13657contained in Reference objects.) The complicating issues are that 13658the Zero opcode is used as a "placeholder" for unspecified 13659optional target operands and stores to constants are defined to be 13660no-ops. 13661 13662Code and Data Size: Current core subsystem library sizes are shown 13663below. These are the code and data sizes for the acpica.lib 13664produced by the Microsoft Visual C++ 6.0 compiler, and these 13665values do not include any ACPI driver or OSPM code. The debug 13666version of the code includes the debug output trace mechanism and 13667has a larger code and data size. Note that these values will vary 13668depending on the efficiency of the compiler and the compiler 13669options used during generation. 13670 13671 Previous Release 13672 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13673 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13674 Current Release: 13675 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13676 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13677 13678 136792) Linux 13680 13681 13682Added preliminary support for obtaining _TRA data for PCI root 13683bridges (Bjorn Helgaas). 13684 13685 136863) iASL Compiler Version X2046: 13687 13688Fixed a problem where the "_DDN" reserved name was defined to be a 13689control method with one argument. There are no arguments, and 13690_DDN does not have to be a control method. 13691 13692Fixed a problem with the Linux version of the compiler where the 13693source lines printed with error messages were the wrong lines. 13694This turned out to be the "LF versus CR/LF" difference between 13695Windows and Unix. This appears to be the longstanding issue 13696concerning listing output and error messages. 13697 13698Fixed a problem with the Linux version of compiler where opcode 13699names within error messages were wrong. This was caused by a 13700slight difference in the output of the Flex tool on Linux versus 13701Windows. 13702 13703Fixed a problem with the Linux compiler where the hex output files 13704contained some garbage data caused by an internal buffer overrun. 13705 13706 13707---------------------------------------- 1370817 May 2002. Summary of changes for this release. 13709 13710 137111) ACPI CA Core Subsystem Version 20020517: 13712 13713Implemented a workaround to an BIOS bug discovered on the HP 13714OmniBook where the FADT revision number and the table size are 13715inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 13716behavior is to fallback to using only the ACPI 1.0 fields of the 13717FADT if the table is too small to be a ACPI 2.0 table as claimed 13718by the revision number. Although this is a BIOS bug, this is a 13719case where the workaround is simple enough and with no side 13720effects, so it seemed prudent to add it. A warning message is 13721issued, however. 13722 13723Implemented minimum size checks for the fixed-length ACPI tables - 13724- the FADT and FACS, as well as consistency checks between the 13725revision number and the table size. 13726 13727Fixed a reported problem in the table override support where the 13728new table pointer was incorrectly treated as a physical address 13729instead of a logical address. 13730 13731Eliminated the use of the AE_AML_ERROR exception and replaced it 13732with more descriptive codes. 13733 13734Fixed a problem where an exception would occur if an ASL Field was 13735defined with no named Field Units underneath it (used by some 13736index fields). 13737 13738Code and Data Size: Current core subsystem library sizes are shown 13739below. These are the code and data sizes for the acpica.lib 13740produced by the Microsoft Visual C++ 6.0 compiler, and these 13741values do not include any ACPI driver or OSPM code. The debug 13742version of the code includes the debug output trace mechanism and 13743has a larger code and data size. Note that these values will vary 13744depending on the efficiency of the compiler and the compiler 13745options used during generation. 13746 13747 Previous Release 13748 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13749 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13750 Current Release: 13751 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13752 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13753 13754 13755 137562) Linux 13757 13758Much work done on ACPI init (MADT and PCI IRQ routing support). 13759(Paul D. and Dominik Brodowski) 13760 13761Fix PCI IRQ-related panic on boot (Sam Revitch) 13762 13763Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 13764 13765Fix "MHz" typo (Dominik Brodowski) 13766 13767Fix RTC year 2000 issue (Dominik Brodowski) 13768 13769Preclude multiple button proc entries (Eric Brunet) 13770 13771Moved arch-specific code out of include/platform/aclinux.h 13772 137733) iASL Compiler Version X2044: 13774 13775Implemented error checking for the string used in the EISAID macro 13776(Usually used in the definition of the _HID object.) The code now 13777strictly enforces the PnP format - exactly 7 characters, 3 13778uppercase letters and 4 hex digits. 13779 13780If a raw string is used in the definition of the _HID object 13781(instead of the EISAID macro), the string must contain all 13782alphanumeric characters (e.g., "*PNP0011" is not allowed because 13783of the asterisk.) 13784 13785Implemented checking for invalid use of ACPI reserved names for 13786most of the name creation operators (Name, Device, Event, Mutex, 13787OperationRegion, PowerResource, Processor, and ThermalZone.) 13788Previously, this check was only performed for control methods. 13789 13790Implemented an additional check on the Name operator to emit an 13791error if a reserved name that must be implemented in ASL as a 13792control method is used. We know that a reserved name must be a 13793method if it is defined with input arguments. 13794 13795The warning emitted when a namespace object reference is not found 13796during the cross reference phase has been changed into an error. 13797The "External" directive should be used for names defined in other 13798modules. 13799 13800 138014) Tools and Utilities 13802 13803The 16-bit tools (adump16 and aexec16) have been regenerated and 13804tested. 13805 13806Fixed a problem with the output of both acpidump and adump16 where 13807the indentation of closing parentheses and brackets was not 13808 13809aligned properly with the parent block. 13810 13811 13812---------------------------------------- 1381303 May 2002. Summary of changes for this release. 13814 13815 138161) ACPI CA Core Subsystem Version 20020503: 13817 13818Added support a new OSL interface that allows the host operating 13819 13820system software to override the DSDT found in the firmware - 13821AcpiOsTableOverride. With this interface, the OSL can examine the 13822version of the firmware DSDT and replace it with a different one 13823if desired. 13824 13825Added new external interfaces for accessing ACPI registers from 13826device drivers and other system software - AcpiGetRegister and 13827AcpiSetRegister. This was simply an externalization of the 13828existing AcpiHwBitRegister interfaces. 13829 13830Fixed a regression introduced in the previous build where the 13831ASL/AML CreateField operator always returned an error, 13832"destination must be a NS Node". 13833 13834Extended the maximum time (before failure) to successfully enable 13835ACPI mode to 3 seconds. 13836 13837Code and Data Size: Current core subsystem library sizes are shown 13838below. These are the code and data sizes for the acpica.lib 13839produced by the Microsoft Visual C++ 6.0 compiler, and these 13840values do not include any ACPI driver or OSPM code. The debug 13841version of the code includes the debug output trace mechanism and 13842has a larger code and data size. Note that these values will vary 13843depending on the efficiency of the compiler and the compiler 13844options used during generation. 13845 13846 Previous Release 13847 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13848 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13849 Current Release: 13850 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13851 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13852 13853 138542) Linux 13855 13856Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 13857free. While 3 out of 4 of our in-house systems work fine, the last 13858one still hangs when testing the LAPIC timer. 13859 13860Renamed many files in 2.5 kernel release to omit "acpi_" from the 13861name. 13862 13863Added warning on boot for Presario 711FR. 13864 13865Sleep improvements (Pavel Machek) 13866 13867ACPI can now be built without CONFIG_PCI enabled. 13868 13869IA64: Fixed memory map functions (JI Lee) 13870 13871 138723) iASL Compiler Version X2043: 13873 13874Added support to allow the compiler to be integrated into the MS 13875VC++ development environment for one-button compilation of single 13876files or entire projects -- with error-to-source-line mapping. 13877 13878Implemented support for compile-time constant folding for the 13879Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 13880specification. This allows the ASL writer to use expressions 13881instead of Integer/Buffer/String constants in terms that must 13882evaluate to constants at compile time and will also simplify the 13883emitted AML in any such sub-expressions that can be folded 13884(evaluated at compile-time.) This increases the size of the 13885compiler significantly because a portion of the ACPI CA AML 13886interpreter is included within the compiler in order to pre- 13887evaluate constant expressions. 13888 13889 13890Fixed a problem with the "Unicode" ASL macro that caused the 13891compiler to fault. (This macro is used in conjunction with the 13892_STR reserved name.) 13893 13894Implemented an AML opcode optimization to use the Zero, One, and 13895Ones opcodes where possible to further reduce the size of integer 13896constants and thus reduce the overall size of the generated AML 13897code. 13898 13899Implemented error checking for new reserved terms for ACPI version 139002.0A. 13901 13902Implemented the -qr option to display the current list of ACPI 13903reserved names known to the compiler. 13904 13905Implemented the -qc option to display the current list of ASL 13906operators that are allowed within constant expressions and can 13907therefore be folded at compile time if the operands are constants. 13908 13909 139104) Documentation 13911 13912Updated the Programmer's Reference for new interfaces, data types, 13913and memory allocation model options. 13914 13915Updated the iASL Compiler User Reference to apply new format and 13916add information about new features and options. 13917 13918---------------------------------------- 1391919 April 2002. Summary of changes for this release. 13920 139211) ACPI CA Core Subsystem Version 20020419: 13922 13923The source code base for the Core Subsystem has been completely 13924cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 13925versions. The Lint option files used are included in the 13926/acpi/generate/lint directory. 13927 13928Implemented enhanced status/error checking across the entire 13929Hardware manager subsystem. Any hardware errors (reported from 13930the OSL) are now bubbled up and will abort a running control 13931method. 13932 13933 13934Fixed a problem where the per-ACPI-table integer width (32 or 64) 13935was stored only with control method nodes, causing a fault when 13936non-control method code was executed during table loading. The 13937solution implemented uses a global variable to indicate table 13938width across the entire ACPI subsystem. Therefore, ACPI CA does 13939not support mixed integer widths across different ACPI tables 13940(DSDT, SSDT). 13941 13942Fixed a problem where NULL extended fields (X fields) in an ACPI 139432.0 ACPI FADT caused the table load to fail. Although the 13944existing ACPI specification is a bit fuzzy on this topic, the new 13945behavior is to fall back on a ACPI 1.0 field if the corresponding 13946ACPI 2.0 X field is zero (even though the table revision indicates 13947a full ACPI 2.0 table.) The ACPI specification will be updated to 13948clarify this issue. 13949 13950Fixed a problem with the SystemMemory operation region handler 13951where memory was always accessed byte-wise even if the AML- 13952specified access width was larger than a byte. This caused 13953problems on systems with memory-mapped I/O. Memory is now 13954accessed with the width specified. On systems that do not support 13955non-aligned transfers, a check is made to guarantee proper address 13956alignment before proceeding in order to avoid an AML-caused 13957alignment fault within the kernel. 13958 13959 13960Fixed a problem with the ExtendedIrq resource where only one byte 13961of the 4-byte Irq field was extracted. 13962 13963Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 13964function was out of date and required a rewrite. 13965 13966Code and Data Size: Current core subsystem library sizes are shown 13967below. These are the code and data sizes for the acpica.lib 13968produced by the Microsoft Visual C++ 6.0 compiler, and these 13969values do not include any ACPI driver or OSPM code. The debug 13970version of the code includes the debug output trace mechanism and 13971has a larger code and data size. Note that these values will vary 13972depending on the efficiency of the compiler and the compiler 13973options used during generation. 13974 13975 Previous Release 13976 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13977 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13978 Current Release: 13979 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13980 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13981 13982 139832) Linux 13984 13985PCI IRQ routing fixes (Dominik Brodowski) 13986 13987 139883) iASL Compiler Version X2042: 13989 13990Implemented an additional compile-time error check for a field 13991unit whose size + minimum access width would cause a run-time 13992access beyond the end-of-region. Previously, only the field size 13993itself was checked. 13994 13995The Core subsystem and iASL compiler now share a common parse 13996object in preparation for compile-time evaluation of the type 139973/4/5 ASL operators. 13998 13999 14000---------------------------------------- 14001Summary of changes for this release: 03_29_02 14002 140031) ACPI CA Core Subsystem Version 20020329: 14004 14005Implemented support for late evaluation of TermArg operands to 14006Buffer and Package objects. This allows complex expressions to be 14007used in the declarations of these object types. 14008 14009Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 140101.0, if the field was larger than 32 bits, it was returned as a 14011buffer - otherwise it was returned as an integer. In ACPI 2.0, 14012the field is returned as a buffer only if the field is larger than 1401364 bits. The TableRevision is now considered when making this 14014conversion to avoid incompatibility with existing ASL code. 14015 14016Implemented logical addressing for AcpiOsGetRootPointer. This 14017allows an RSDP with either a logical or physical address. With 14018this support, the host OS can now override all ACPI tables with 14019one logical RSDP. Includes implementation of "typed" pointer 14020support to allow a common data type for both physical and logical 14021pointers internally. This required a change to the 14022AcpiOsGetRootPointer interface. 14023 14024Implemented the use of ACPI 2.0 Generic Address Structures for all 14025GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 14026mapped I/O for these ACPI features. 14027 14028Initialization now ignores not only non-required tables (All 14029tables other than the FADT, FACS, DSDT, and SSDTs), but also does 14030not validate the table headers of unrecognized tables. 14031 14032Fixed a problem where a notify handler could only be 14033installed/removed on an object of type Device. All "notify" 14034 14035objects are now supported -- Devices, Processor, Power, and 14036Thermal. 14037 14038Removed most verbosity from the ACPI_DB_INFO debug level. Only 14039critical information is returned when this debug level is enabled. 14040 14041Code and Data Size: Current core subsystem library sizes are shown 14042below. These are the code and data sizes for the acpica.lib 14043produced by the Microsoft Visual C++ 6.0 compiler, and these 14044values do not include any ACPI driver or OSPM code. The debug 14045version of the code includes the debug output trace mechanism and 14046has a larger code and data size. Note that these values will vary 14047depending on the efficiency of the compiler and the compiler 14048options used during generation. 14049 14050 Previous Release 14051 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14052 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14053 Current Release: 14054 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14055 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14056 14057 140582) Linux: 14059 14060The processor driver (acpi_processor.c) now fully supports ACPI 140612.0-based processor performance control (e.g. Intel(R) 14062SpeedStep(TM) technology) Note that older laptops that only have 14063the Intel "applet" interface are not supported through this. The 14064'limit' and 'performance' interface (/proc) are fully functional. 14065[Note that basic policy for controlling performance state 14066transitions will be included in the next version of ospmd.] The 14067idle handler was modified to more aggressively use C2, and PIIX4 14068errata handling underwent a complete overhaul (big thanks to 14069Dominik Brodowski). 14070 14071Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 14072based devices in the ACPI namespace are now dynamically bound 14073(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 14074This allows, among other things, ACPI to resolve bus numbers for 14075subordinate PCI bridges. 14076 14077Enhanced PCI IRQ routing to get the proper bus number for _PRT 14078entries defined underneath PCI bridges. 14079 14080Added IBM 600E to bad bios list due to invalid _ADR value for 14081PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 14082 14083In the process of adding full MADT support (e.g. IOAPIC) for IA32 14084(acpi.c, mpparse.c) -- stay tuned. 14085 14086Added back visual differentiation between fixed-feature and 14087control-method buttons in dmesg. Buttons are also subtyped (e.g. 14088button/power/PWRF) to simplify button identification. 14089 14090We no longer use -Wno-unused when compiling debug. Please ignore 14091any "_THIS_MODULE defined but not used" messages. 14092 14093Can now shut down the system using "magic sysrq" key. 14094 14095 140963) iASL Compiler version 2041: 14097 14098Fixed a problem where conversion errors for hex/octal/decimal 14099constants were not reported. 14100 14101Implemented a fix for the General Register template Address field. 14102This field was 8 bits when it should be 64. 14103 14104Fixed a problem where errors/warnings were no longer being emitted 14105within the listing output file. 14106 14107Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 14108exactly 4 characters, alphanumeric only. 14109 14110 14111 14112 14113---------------------------------------- 14114Summary of changes for this release: 03_08_02 14115 14116 141171) ACPI CA Core Subsystem Version 20020308: 14118 14119Fixed a problem with AML Fields where the use of the "AccessAny" 14120keyword could cause an interpreter error due to attempting to read 14121or write beyond the end of the parent Operation Region. 14122 14123Fixed a problem in the SystemMemory Operation Region handler where 14124an attempt was made to map memory beyond the end of the region. 14125This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 14126errors on some Linux systems. 14127 14128Fixed a problem where the interpreter/namespace "search to root" 14129algorithm was not functioning for some object types. Relaxed the 14130internal restriction on the search to allow upsearches for all 14131external object types as well as most internal types. 14132 14133 141342) Linux: 14135 14136We now use safe_halt() macro versus individual calls to sti | hlt. 14137 14138Writing to the processor limit interface should now work. "echo 1" 14139will increase the limit, 2 will decrease, and 0 will reset to the 14140 14141default. 14142 14143 141443) ASL compiler: 14145 14146Fixed segfault on Linux version. 14147 14148 14149---------------------------------------- 14150Summary of changes for this release: 02_25_02 14151 141521) ACPI CA Core Subsystem: 14153 14154 14155Fixed a problem where the GPE bit masks were not initialized 14156properly, causing erratic GPE behavior. 14157 14158Implemented limited support for multiple calling conventions. The 14159code can be generated with either the VPL (variable parameter 14160list, or "C") convention, or the FPL (fixed parameter list, or 14161"Pascal") convention. The core subsystem is about 3.4% smaller 14162when generated with FPL. 14163 14164 141652) Linux 14166 14167Re-add some /proc/acpi/event functionality that was lost during 14168the rewrite 14169 14170Resolved issue with /proc events for fixed-feature buttons showing 14171up as the system device. 14172 14173Fixed checks on C2/C3 latencies to be inclusive of maximum values. 14174 14175Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 14176 14177Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 14178 14179Fixed limit interface & usage to fix bugs with passive cooling 14180hysterisis. 14181 14182Restructured PRT support. 14183 14184 14185---------------------------------------- 14186Summary of changes for this label: 02_14_02 14187 14188 141891) ACPI CA Core Subsystem: 14190 14191Implemented support in AcpiLoadTable to allow loading of FACS and 14192FADT tables. 14193 14194Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 14195been removed. All 64-bit platforms should be migrated to the ACPI 141962.0 tables. The actbl71.h header has been removed from the source 14197tree. 14198 14199All C macros defined within the subsystem have been prefixed with 14200"ACPI_" to avoid collision with other system include files. 14201 14202Removed the return value for the two AcpiOsPrint interfaces, since 14203it is never used and causes lint warnings for ignoring the return 14204value. 14205 14206Added error checking to all internal mutex acquire and release 14207calls. Although a failure from one of these interfaces is 14208probably a fatal system error, these checks will cause the 14209immediate abort of the currently executing method or interface. 14210 14211Fixed a problem where the AcpiSetCurrentResources interface could 14212fault. This was a side effect of the deployment of the new memory 14213allocation model. 14214 14215Fixed a couple of problems with the Global Lock support introduced 14216in the last major build. The "common" (1.0/2.0) internal FACS was 14217being overwritten with the FACS signature and clobbering the 14218Global Lock pointer. Also, the actual firmware FACS was being 14219unmapped after construction of the "common" FACS, preventing 14220access to the actual Global Lock field within it. The "common" 14221internal FACS is no longer installed as an actual ACPI table; it 14222is used simply as a global. 14223 14224Code and Data Size: Current core subsystem library sizes are shown 14225below. These are the code and data sizes for the acpica.lib 14226produced by the Microsoft Visual C++ 6.0 compiler, and these 14227values do not include any ACPI driver or OSPM code. The debug 14228version of the code includes the debug output trace mechanism and 14229has a larger code and data size. Note that these values will vary 14230depending on the efficiency of the compiler and the compiler 14231options used during generation. 14232 14233 Previous Release (02_07_01) 14234 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14235 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14236 Current Release: 14237 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14238 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14239 14240 142412) Linux 14242 14243Updated Linux-specific code for core macro and OSL interface 14244changes described above. 14245 14246Improved /proc/acpi/event. It now can be opened only once and has 14247proper poll functionality. 14248 14249Fixed and restructured power management (acpi_bus). 14250 14251Only create /proc "view by type" when devices of that class exist. 14252 14253Fixed "charging/discharging" bug (and others) in acpi_battery. 14254 14255Improved thermal zone code. 14256 14257 142583) ASL Compiler, version X2039: 14259 14260 14261Implemented the new compiler restriction on ASL String hex/octal 14262escapes to non-null, ASCII values. An error results if an invalid 14263value is used. (This will require an ACPI 2.0 specification 14264change.) 14265 14266AML object labels that are output to the optional C and ASM source 14267are now prefixed with both the ACPI table signature and table ID 14268to help guarantee uniqueness within a large BIOS project. 14269 14270 14271---------------------------------------- 14272Summary of changes for this label: 02_01_02 14273 142741) ACPI CA Core Subsystem: 14275 14276ACPI 2.0 support is complete in the entire Core Subsystem and the 14277ASL compiler. All new ACPI 2.0 operators are implemented and all 14278other changes for ACPI 2.0 support are complete. With 14279simultaneous code and data optimizations throughout the subsystem, 14280ACPI 2.0 support has been implemented with almost no additional 14281cost in terms of code and data size. 14282 14283Implemented a new mechanism for allocation of return buffers. If 14284the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 14285be allocated on behalf of the caller. Consolidated all return 14286buffer validation and allocation to a common procedure. Return 14287buffers will be allocated via the primary OSL allocation interface 14288since it appears that a separate pool is not needed by most users. 14289If a separate pool is required for these buffers, the caller can 14290still use the original mechanism and pre-allocate the buffer(s). 14291 14292Implemented support for string operands within the DerefOf 14293operator. 14294 14295Restructured the Hardware and Event managers to be table driven, 14296simplifying the source code and reducing the amount of generated 14297code. 14298 14299Split the common read/write low-level ACPI register bitfield 14300procedure into a separate read and write, simplifying the code 14301considerably. 14302 14303Obsoleted the AcpiOsCallocate OSL interface. This interface was 14304used only a handful of times and didn't have enough critical mass 14305for a separate interface. Replaced with a common calloc procedure 14306in the core. 14307 14308Fixed a reported problem with the GPE number mapping mechanism 14309that allows GPE1 numbers to be non-contiguous with GPE0. 14310Reorganized the GPE information and shrunk a large array that was 14311originally large enough to hold info for all possible GPEs (256) 14312to simply large enough to hold all GPEs up to the largest GPE 14313number on the machine. 14314 14315Fixed a reported problem with resource structure alignment on 64- 14316bit platforms. 14317 14318Changed the AcpiEnableEvent and AcpiDisableEvent external 14319interfaces to not require any flags for the common case of 14320enabling/disabling a GPE. 14321 14322Implemented support to allow a "Notify" on a Processor object. 14323 14324Most TBDs in comments within the source code have been resolved 14325and eliminated. 14326 14327 14328Fixed a problem in the interpreter where a standalone parent 14329prefix (^) was not handled correctly in the interpreter and 14330debugger. 14331 14332Removed obsolete and unnecessary GPE save/restore code. 14333 14334Implemented Field support in the ASL Load operator. This allows a 14335table to be loaded from a named field, in addition to loading a 14336table directly from an Operation Region. 14337 14338Implemented timeout and handle support in the external Global Lock 14339interfaces. 14340 14341Fixed a problem in the AcpiDump utility where pathnames were no 14342longer being generated correctly during the dump of named objects. 14343 14344Modified the AML debugger to give a full display of if/while 14345predicates instead of just one AML opcode at a time. (The 14346predicate can have several nested ASL statements.) The old method 14347was confusing during single stepping. 14348 14349Code and Data Size: Current core subsystem library sizes are shown 14350below. These are the code and data sizes for the acpica.lib 14351produced by the Microsoft Visual C++ 6.0 compiler, and these 14352values do not include any ACPI driver or OSPM code. The debug 14353version of the code includes the debug output trace mechanism and 14354has a larger code and data size. Note that these values will vary 14355depending on the efficiency of the compiler and the compiler 14356options used during generation. 14357 14358 Previous Release (12_18_01) 14359 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14360 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14361 Current Release: 14362 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14363 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14364 143652) Linux 14366 14367 Implemented fix for PIIX reverse throttling errata (Processor 14368driver) 14369 14370Added new Limit interface (Processor and Thermal drivers) 14371 14372New thermal policy (Thermal driver) 14373 14374Many updates to /proc 14375 14376Battery "low" event support (Battery driver) 14377 14378Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 14379 14380IA32 - IA64 initialization unification, no longer experimental 14381 14382Menuconfig options redesigned 14383 143843) ASL Compiler, version X2037: 14385 14386Implemented several new output features to simplify integration of 14387AML code into firmware: 1) Output the AML in C source code with 14388labels for each named ASL object. The original ASL source code 14389is interleaved as C comments. 2) Output the AML in ASM source code 14390with labels and interleaved ASL source. 3) Output the AML in 14391raw hex table form, in either C or ASM. 14392 14393Implemented support for optional string parameters to the 14394LoadTable operator. 14395 14396Completed support for embedded escape sequences within string 14397literals. The compiler now supports all single character escapes 14398as well as the Octal and Hex escapes. Note: the insertion of a 14399null byte into a string literal (via the hex/octal escape) causes 14400the string to be immediately terminated. A warning is issued. 14401 14402Fixed a problem where incorrect AML was generated for the case 14403where an ASL namepath consists of a single parent prefix ( 14404 14405) with no trailing name segments. 14406 14407The compiler has been successfully generated with a 64-bit C 14408compiler. 14409 14410 14411 14412 14413---------------------------------------- 14414Summary of changes for this label: 12_18_01 14415 144161) Linux 14417 14418Enhanced blacklist with reason and severity fields. Any table's 14419signature may now be used to identify a blacklisted system. 14420 14421Call _PIC control method to inform the firmware which interrupt 14422model the OS is using. Turn on any disabled link devices. 14423 14424Cleaned up busmgr /proc error handling (Andreas Dilger) 14425 14426 2) ACPI CA Core Subsystem: 14427 14428Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 14429while loop) 14430 14431Completed implementation of the ACPI 2.0 "Continue", 14432"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 14433operators. All new ACPI 2.0 operators are now implemented in both 14434the ASL compiler and the AML interpreter. The only remaining ACPI 144352.0 task is support for the String data type in the DerefOf 14436operator. Fixed a problem with AcquireMutex where the status code 14437was lost if the caller had to actually wait for the mutex. 14438 14439Increased the maximum ASL Field size from 64K bits to 4G bits. 14440 14441Completed implementation of the external Global Lock interfaces -- 14442AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 14443Handler parameters were added. 14444 14445Completed another pass at removing warnings and issues when 14446compiling with 64-bit compilers. The code now compiles cleanly 14447with the Intel 64-bit C/C++ compiler. Most notably, the pointer 14448add and subtract (diff) macros have changed considerably. 14449 14450 14451Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1445264-bit platforms, 32-bits on all others. This type is used 14453wherever memory allocation and/or the C sizeof() operator is used, 14454and affects the OSL memory allocation interfaces AcpiOsAllocate 14455and AcpiOsCallocate. 14456 14457Implemented sticky user breakpoints in the AML debugger. 14458 14459Code and Data Size: Current core subsystem library sizes are shown 14460below. These are the code and data sizes for the acpica.lib 14461produced by the Microsoft Visual C++ 6.0 compiler, and these 14462values do not include any ACPI driver or OSPM code. The debug 14463version of the code includes the debug output trace mechanism and 14464has a larger code and data size. Note that these values will vary 14465depending on the efficiency of the compiler and the compiler 14466options used during generation. 14467 14468 Previous Release (12_05_01) 14469 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14470 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14471 Current Release: 14472 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14473 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14474 14475 3) ASL Compiler, version X2034: 14476 14477Now checks for (and generates an error if detected) the use of a 14478Break or Continue statement without an enclosing While statement. 14479 14480 14481Successfully generated the compiler with the Intel 64-bit C 14482compiler. 14483 14484 ---------------------------------------- 14485Summary of changes for this label: 12_05_01 14486 14487 1) ACPI CA Core Subsystem: 14488 14489The ACPI 2.0 CopyObject operator is fully implemented. This 14490operator creates a new copy of an object (and is also used to 14491bypass the "implicit conversion" mechanism of the Store operator.) 14492 14493The ACPI 2.0 semantics for the SizeOf operator are fully 14494implemented. The change is that performing a SizeOf on a 14495reference object causes an automatic dereference of the object to 14496tha actual value before the size is evaluated. This behavior was 14497undefined in ACPI 1.0. 14498 14499The ACPI 2.0 semantics for the Extended IRQ resource descriptor 14500have been implemented. The interrupt polarity and mode are now 14501independently set. 14502 14503Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 14504appearing in Package objects were not properly converted to 14505integers when the internal Package was converted to an external 14506object (via the AcpiEvaluateObject interface.) 14507 14508Fixed a problem with the namespace object deletion mechanism for 14509objects created by control methods. There were two parts to this 14510problem: 1) Objects created during the initialization phase method 14511parse were not being deleted, and 2) The object owner ID mechanism 14512to track objects was broken. 14513 14514Fixed a problem where the use of the ASL Scope operator within a 14515control method would result in an invalid opcode exception. 14516 14517Fixed a problem introduced in the previous label where the buffer 14518length required for the _PRT structure was not being returned 14519correctly. 14520 14521Code and Data Size: Current core subsystem library sizes are shown 14522below. These are the code and data sizes for the acpica.lib 14523produced by the Microsoft Visual C++ 6.0 compiler, and these 14524values do not include any ACPI driver or OSPM code. The debug 14525version of the code includes the debug output trace mechanism and 14526has a larger code and data size. Note that these values will vary 14527depending on the efficiency of the compiler and the compiler 14528options used during generation. 14529 14530 Previous Release (11_20_01) 14531 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14532 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14533 14534 Current Release: 14535 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14536 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14537 14538 2) Linux: 14539 14540Updated all files to apply cleanly against 2.4.16. 14541 14542Added basic PCI Interrupt Routing Table (PRT) support for IA32 14543(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 14544version supports both static and dyanmic PRT entries, but dynamic 14545entries are treated as if they were static (not yet 14546reconfigurable). Architecture- specific code to use this data is 14547absent on IA32 but should be available shortly. 14548 14549Changed the initialization sequence to start the ACPI interpreter 14550(acpi_init) prior to initialization of the PCI driver (pci_init) 14551in init/main.c. This ordering is required to support PRT and 14552facilitate other (future) enhancement. A side effect is that the 14553ACPI bus driver and certain device drivers can no longer be loaded 14554as modules. 14555 14556Modified the 'make menuconfig' options to allow PCI Interrupt 14557Routing support to be included without the ACPI Bus and other 14558device drivers. 14559 14560 3) ASL Compiler, version X2033: 14561 14562Fixed some issues with the use of the new CopyObject and 14563DataTableRegion operators. Both are fully functional. 14564 14565 ---------------------------------------- 14566Summary of changes for this label: 11_20_01 14567 14568 20 November 2001. Summary of changes for this release. 14569 14570 1) ACPI CA Core Subsystem: 14571 14572Updated Index support to match ACPI 2.0 semantics. Storing a 14573Integer, String, or Buffer to an Index of a Buffer will store only 14574the least-significant byte of the source to the Indexed buffer 14575byte. Multiple writes are not performed. 14576 14577Fixed a problem where the access type used in an AccessAs ASL 14578operator was not recorded correctly into the field object. 14579 14580Fixed a problem where ASL Event objects were created in a 14581signalled state. Events are now created in an unsignalled state. 14582 14583The internal object cache is now purged after table loading and 14584initialization to reduce the use of dynamic kernel memory -- on 14585the assumption that object use is greatest during the parse phase 14586of the entire table (versus the run-time use of individual control 14587methods.) 14588 14589ACPI 2.0 variable-length packages are now fully operational. 14590 14591Code and Data Size: Code and Data optimizations have permitted new 14592feature development with an actual reduction in the library size. 14593Current core subsystem library sizes are shown below. These are 14594the code and data sizes for the acpica.lib produced by the 14595Microsoft Visual C++ 6.0 compiler, and these values do not include 14596any ACPI driver or OSPM code. The debug version of the code 14597includes the debug output trace mechanism and has a larger code 14598and data size. Note that these values will vary depending on the 14599efficiency of the compiler and the compiler options used during 14600generation. 14601 14602 Previous Release (11_09_01): 14603 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14604 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14605 14606 Current Release: 14607 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14608 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14609 14610 2) Linux: 14611 14612Enhanced the ACPI boot-time initialization code to allow the use 14613of Local APIC tables for processor enumeration on IA-32, and to 14614pave the way for a fully MPS-free boot (on SMP systems) in the 14615near future. This functionality replaces 14616arch/i386/kernel/acpitables.c, which was introduced in an earlier 146172.4.15-preX release. To enable this feature you must add 14618"acpi_boot=on" to the kernel command line -- see the help entry 14619for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 14620the works... 14621 14622Restructured the configuration options to allow boot-time table 14623parsing support without inclusion of the ACPI Interpreter (and 14624other) code. 14625 14626NOTE: This release does not include fixes for the reported events, 14627power-down, and thermal passive cooling issues (coming soon). 14628 14629 3) ASL Compiler: 14630 14631Added additional typechecking for Fields within restricted access 14632Operation Regions. All fields within EC and CMOS regions must be 14633declared with ByteAcc. All fields withing SMBus regions must be 14634declared with the BufferAcc access type. 14635 14636Fixed a problem where the listing file output of control methods 14637no longer interleaved the actual AML code with the ASL source 14638code. 14639 14640 14641 14642 14643---------------------------------------- 14644Summary of changes for this label: 11_09_01 14645 146461) ACPI CA Core Subsystem: 14647 14648Implemented ACPI 2.0-defined support for writes to fields with a 14649Buffer, String, or Integer source operand that is smaller than the 14650target field. In these cases, the source operand is zero-extended 14651to fill the target field. 14652 14653Fixed a problem where a Field starting bit offset (within the 14654parent operation region) was calculated incorrectly if the 14655 14656alignment of the field differed from the access width. This 14657affected CreateWordField, CreateDwordField, CreateQwordField, and 14658possibly other fields that use the "AccessAny" keyword. 14659 14660Fixed a problem introduced in the 11_02_01 release where indirect 14661stores through method arguments did not operate correctly. 14662 146632) Linux: 14664 14665Implemented boot-time ACPI table parsing support 14666(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 14667facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 14668legacy BIOS interfaces (e.g. MPS) for the configuration of system 14669processors, memory, and interrupts during setup_arch(). Note that 14670this patch does not include the required architecture-specific 14671changes required to apply this information -- subsequent patches 14672will be posted for both IA32 and IA64 to achieve this. 14673 14674Added low-level sleep support for IA32 platforms, courtesy of Pat 14675Mochel. This allows IA32 systems to transition to/from various 14676sleeping states (e.g. S1, S3), although the lack of a centralized 14677driver model and power-manageable drivers will prevent its 14678(successful) use on most systems. 14679 14680Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 14681submenu, unified IA32 and IA64 options, added new "Boot using ACPI 14682tables" option, etc. 14683 14684Increased the default timeout for the EC driver from 1ms to 10ms 14685(1000 cycles of 10us) to try to address AE_TIME errors during EC 14686transactions. 14687 14688 ---------------------------------------- 14689Summary of changes for this label: 11_02_01 14690 146911) ACPI CA Core Subsystem: 14692 14693ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 14694(QWordAcc keyword). All ACPI 2.0 64-bit support is now 14695implemented. 14696 14697OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 14698changes to support ACPI 2.0 Qword field access. Read/Write 14699PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 14700accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 14701the value parameter for the address space handler interface is now 14702an ACPI_INTEGER. OSL implementations of these interfaces must now 14703handle the case where the Width parameter is 64. 14704 14705Index Fields: Fixed a problem where unaligned bit assembly and 14706disassembly for IndexFields was not supported correctly. 14707 14708Index and Bank Fields: Nested Index and Bank Fields are now 14709supported. During field access, a check is performed to ensure 14710that the value written to an Index or Bank register is not out of 14711the range of the register. The Index (or Bank) register is 14712written before each access to the field data. Future support will 14713include allowing individual IndexFields to be wider than the 14714DataRegister width. 14715 14716Fields: Fixed a problem where the AML interpreter was incorrectly 14717attempting to write beyond the end of a Field/OpRegion. This was 14718a boundary case that occurred when a DWORD field was written to a 14719BYTE access OpRegion, forcing multiple writes and causing the 14720interpreter to write one datum too many. 14721 14722Fields: Fixed a problem with Field/OpRegion access where the 14723starting bit address of a field was incorrectly calculated if the 14724current access type was wider than a byte (WordAcc, DwordAcc, or 14725QwordAcc). 14726 14727Fields: Fixed a problem where forward references to individual 14728FieldUnits (individual Field names within a Field definition) were 14729not resolved during the AML table load. 14730 14731Fields: Fixed a problem where forward references from a Field 14732definition to the parent Operation Region definition were not 14733resolved during the AML table load. 14734 14735Fields: Duplicate FieldUnit names within a scope are now detected 14736during AML table load. 14737 14738Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 14739returned an incorrect name for the root node. 14740 14741Code and Data Size: Code and Data optimizations have permitted new 14742feature development with an actual reduction in the library size. 14743Current core subsystem library sizes are shown below. These are 14744the code and data sizes for the acpica.lib produced by the 14745Microsoft Visual C++ 6.0 compiler, and these values do not include 14746any ACPI driver or OSPM code. The debug version of the code 14747includes the debug output trace mechanism and has a larger code 14748and data size. Note that these values will vary depending on the 14749efficiency of the compiler and the compiler options used during 14750generation. 14751 14752 Previous Release (10_18_01): 14753 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14754 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14755 14756 Current Release: 14757 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14758 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14759 14760 2) Linux: 14761 14762Improved /proc processor output (Pavel Machek) Re-added 14763MODULE_LICENSE("GPL") to all modules. 14764 14765 3) ASL Compiler version X2030: 14766 14767Duplicate FieldUnit names within a scope are now detected and 14768flagged as errors. 14769 14770 4) Documentation: 14771 14772Programmer Reference updated to reflect OSL and address space 14773handler interface changes described above. 14774 14775---------------------------------------- 14776Summary of changes for this label: 10_18_01 14777 14778ACPI CA Core Subsystem: 14779 14780Fixed a problem with the internal object reference count mechanism 14781that occasionally caused premature object deletion. This resolves 14782all of the outstanding problem reports where an object is deleted 14783in the middle of an interpreter evaluation. Although this problem 14784only showed up in rather obscure cases, the solution to the 14785problem involved an adjustment of all reference counts involving 14786objects attached to namespace nodes. 14787 14788Fixed a problem with Field support in the interpreter where 14789writing to an aligned field whose length is an exact multiple (2 14790or greater) of the field access granularity would cause an attempt 14791to write beyond the end of the field. 14792 14793The top level AML opcode execution functions within the 14794interpreter have been renamed with a more meaningful and 14795consistent naming convention. The modules exmonad.c and 14796exdyadic.c were eliminated. New modules are exoparg1.c, 14797exoparg2.c, exoparg3.c, and exoparg6.c. 14798 14799Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 14800 14801Fixed a problem where the AML debugger was causing some internal 14802objects to not be deleted during subsystem termination. 14803 14804Fixed a problem with the external AcpiEvaluateObject interface 14805where the subsystem would fault if the named object to be 14806evaluated refered to a constant such as Zero, Ones, etc. 14807 14808Fixed a problem with IndexFields and BankFields where the 14809subsystem would fault if the index, data, or bank registers were 14810not defined in the same scope as the field itself. 14811 14812Added printf format string checking for compilers that support 14813this feature. Corrected more than 50 instances of issues with 14814format specifiers within invocations of ACPI_DEBUG_PRINT 14815throughout the core subsystem code. 14816 14817The ASL "Revision" operator now returns the ACPI support level 14818implemented in the core - the value "2" since the ACPI 2.0 support 14819is more than 50% implemented. 14820 14821Enhanced the output of the AML debugger "dump namespace" command 14822to output in a more human-readable form. 14823 14824Current core subsystem library code sizes are shown below. These 14825 14826are the code and data sizes for the acpica.lib produced by the 14827Microsoft Visual C++ 6.0 compiler, and these values do not include 14828any ACPI driver or OSPM code. The debug version of the code 14829includes the full debug trace mechanism -- leading to a much 14830 14831larger code and data size. Note that these values will vary 14832depending on the efficiency of the compiler and the compiler 14833options used during generation. 14834 14835 Previous Label (09_20_01): 14836 Non-Debug Version: 65K Code, 5K Data, 70K Total 14837 Debug Version: 138K Code, 58K Data, 196K Total 14838 14839 This Label: 14840 14841 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14842 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14843 14844Linux: 14845 14846Implemented a "Bad BIOS Blacklist" to track machines that have 14847known ASL/AML problems. 14848 14849Enhanced the /proc interface for the thermal zone driver and added 14850support for _HOT (the critical suspend trip point). The 'info' 14851file now includes threshold/policy information, and allows setting 14852of _SCP (cooling preference) and _TZP (polling frequency) values 14853to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 14854frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 14855preference to the passive/quiet mode (if supported by the ASL). 14856 14857Implemented a workaround for a gcc bug that resuted in an OOPs 14858when loading the control method battery driver. 14859 14860 ---------------------------------------- 14861Summary of changes for this label: 09_20_01 14862 14863 ACPI CA Core Subsystem: 14864 14865The AcpiEnableEvent and AcpiDisableEvent interfaces have been 14866modified to allow individual GPE levels to be flagged as wake- 14867enabled (i.e., these GPEs are to remain enabled when the platform 14868sleeps.) 14869 14870The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 14871support wake-enabled GPEs. This means that upon entering the 14872sleep state, all GPEs that are not wake-enabled are disabled. 14873When leaving the sleep state, these GPEs are reenabled. 14874 14875A local double-precision divide/modulo module has been added to 14876enhance portability to OS kernels where a 64-bit math library is 14877not available. The new module is "utmath.c". 14878 14879Several optimizations have been made to reduce the use of CPU 14880stack. Originally over 2K, the maximum stack usage is now below 148812K at 1860 bytes (1.82k) 14882 14883Fixed a problem with the AcpiGetFirmwareTable interface where the 14884root table pointer was not mapped into a logical address properly. 14885 14886Fixed a problem where a NULL pointer was being dereferenced in the 14887interpreter code for the ASL Notify operator. 14888 14889Fixed a problem where the use of the ASL Revision operator 14890returned an error. This operator now returns the current version 14891of the ACPI CA core subsystem. 14892 14893Fixed a problem where objects passed as control method parameters 14894to AcpiEvaluateObject were always deleted at method termination. 14895However, these objects may end up being stored into the namespace 14896by the called method. The object reference count mechanism was 14897applied to these objects instead of a force delete. 14898 14899Fixed a problem where static strings or buffers (contained in the 14900AML code) that are declared as package elements within the ASL 14901code could cause a fault because the interpreter would attempt to 14902delete them. These objects are now marked with the "static 14903object" flag to prevent any attempt to delete them. 14904 14905Implemented an interpreter optimization to use operands directly 14906from the state object instead of extracting the operands to local 14907variables. This reduces stack use and code size, and improves 14908performance. 14909 14910The module exxface.c was eliminated as it was an unnecessary extra 14911layer of code. 14912 14913Current core subsystem library code sizes are shown below. These 14914are the code and data sizes for the acpica.lib produced by the 14915Microsoft Visual C++ 6.0 compiler, and these values do not include 14916any ACPI driver or OSPM code. The debug version of the code 14917includes the full debug trace mechanism -- leading to a much 14918larger code and data size. Note that these values will vary 14919depending on the efficiency of the compiler and the compiler 14920options used during generation. 14921 14922 Non-Debug Version: 65K Code, 5K Data, 70K Total 14923(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 14924Total (Previously 195K) 14925 14926Linux: 14927 14928Support for ACPI 2.0 64-bit integers has been added. All ACPI 14929Integer objects are now 64 bits wide 14930 14931All Acpi data types and structures are now in lower case. Only 14932Acpi macros are upper case for differentiation. 14933 14934 Documentation: 14935 14936Changes to the external interfaces as described above. 14937 14938 ---------------------------------------- 14939Summary of changes for this label: 08_31_01 14940 14941 ACPI CA Core Subsystem: 14942 14943A bug with interpreter implementation of the ASL Divide operator 14944was found and fixed. The implicit function return value (not the 14945explicit store operands) was returning the remainder instead of 14946the quotient. This was a longstanding bug and it fixes several 14947known outstanding issues on various platforms. 14948 14949The ACPI_DEBUG_PRINT and function trace entry/exit macros have 14950been further optimized for size. There are 700 invocations of the 14951DEBUG_PRINT macro alone, so each optimization reduces the size of 14952the debug version of the subsystem significantly. 14953 14954A stack trace mechanism has been implemented. The maximum stack 14955usage is about 2K on 32-bit platforms. The debugger command "stat 14956stack" will display the current maximum stack usage. 14957 14958All public symbols and global variables within the subsystem are 14959now prefixed with the string "Acpi". This keeps all of the 14960symbols grouped together in a kernel map, and avoids conflicts 14961with other kernel subsystems. 14962 14963Most of the internal fixed lookup tables have been moved into the 14964code segment via the const operator. 14965 14966Several enhancements have been made to the interpreter to both 14967reduce the code size and improve performance. 14968 14969Current core subsystem library code sizes are shown below. These 14970are the code and data sizes for the acpica.lib produced by the 14971Microsoft Visual C++ 6.0 compiler, and these values do not include 14972any ACPI driver or OSPM code. The debug version of the code 14973includes the full debug trace mechanism which contains over 700 14974invocations of the DEBUG_PRINT macro, 500 function entry macro 14975invocations, and over 900 function exit macro invocations -- 14976leading to a much larger code and data size. Note that these 14977values will vary depending on the efficiency of the compiler and 14978the compiler options used during generation. 14979 14980 Non-Debug Version: 64K Code, 5K Data, 69K Total 14981Debug Version: 137K Code, 58K Data, 195K Total 14982 14983 Linux: 14984 14985Implemented wbinvd() macro, pending a kernel-wide definition. 14986 14987Fixed /proc/acpi/event to handle poll() and short reads. 14988 14989 ASL Compiler, version X2026: 14990 14991Fixed a problem introduced in the previous label where the AML 14992 14993code emitted for package objects produced packages with zero 14994length. 14995 14996 ---------------------------------------- 14997Summary of changes for this label: 08_16_01 14998 14999ACPI CA Core Subsystem: 15000 15001The following ACPI 2.0 ASL operators have been implemented in the 15002AML interpreter (These are already supported by the Intel ASL 15003compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 15004ToBuffer. Support for 64-bit AML constants is implemented in the 15005AML parser, debugger, and disassembler. 15006 15007The internal memory tracking mechanism (leak detection code) has 15008been upgraded to reduce the memory overhead (a separate tracking 15009block is no longer allocated for each memory allocation), and now 15010supports all of the internal object caches. 15011 15012The data structures and code for the internal object caches have 15013been coelesced and optimized so that there is a single cache and 15014memory list data structure and a single group of functions that 15015implement generic cache management. This has reduced the code 15016size in both the debug and release versions of the subsystem. 15017 15018The DEBUG_PRINT macro(s) have been optimized for size and replaced 15019by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 15020different, because it generates a single call to an internal 15021function. This results in a savings of about 90 bytes per 15022invocation, resulting in an overall code and data savings of about 1502316% in the debug version of the subsystem. 15024 15025 Linux: 15026 15027Fixed C3 disk corruption problems and re-enabled C3 on supporting 15028machines. 15029 15030Integrated low-level sleep code by Patrick Mochel. 15031 15032Further tweaked source code Linuxization. 15033 15034Other minor fixes. 15035 15036 ASL Compiler: 15037 15038Support for ACPI 2.0 variable length packages is fixed/completed. 15039 15040Fixed a problem where the optional length parameter for the ACPI 150412.0 ToString operator. 15042 15043Fixed multiple extraneous error messages when a syntax error is 15044detected within the declaration line of a control method. 15045 15046 ---------------------------------------- 15047Summary of changes for this label: 07_17_01 15048 15049ACPI CA Core Subsystem: 15050 15051Added a new interface named AcpiGetFirmwareTable to obtain any 15052ACPI table via the ACPI signature. The interface can be called at 15053any time during kernel initialization, even before the kernel 15054virtual memory manager is initialized and paging is enabled. This 15055allows kernel subsystems to obtain ACPI tables very early, even 15056before the ACPI CA subsystem is initialized. 15057 15058Fixed a problem where Fields defined with the AnyAcc attribute 15059could be resolved to the incorrect address under the following 15060conditions: 1) the field width is larger than 8 bits and 2) the 15061parent operation region is not defined on a DWORD boundary. 15062 15063Fixed a problem where the interpreter is not being locked during 15064namespace initialization (during execution of the _INI control 15065methods), causing an error when an attempt is made to release it 15066later. 15067 15068ACPI 2.0 support in the AML Interpreter has begun and will be 15069ongoing throughout the rest of this year. In this label, The Mod 15070operator is implemented. 15071 15072Added a new data type to contain full PCI addresses named 15073ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 15074and Function values. 15075 15076 Linux: 15077 15078Enhanced the Linux version of the source code to change most 15079capitalized ACPI type names to lowercase. For example, all 15080instances of ACPI_STATUS are changed to acpi_status. This will 15081result in a large diff, but the change is strictly cosmetic and 15082aligns the CA code closer to the Linux coding standard. 15083 15084OSL Interfaces: 15085 15086The interfaces to the PCI configuration space have been changed to 15087add the PCI Segment number and to split the single 32-bit combined 15088DeviceFunction field into two 16-bit fields. This was 15089accomplished by moving the four values that define an address in 15090PCI configuration space (segment, bus, device, and function) to 15091the new ACPI_PCI_ID structure. 15092 15093The changes to the PCI configuration space interfaces led to a 15094reexamination of the complete set of address space access 15095interfaces for PCI, I/O, and Memory. The previously existing 18 15096interfaces have proven difficult to maintain (any small change 15097must be propagated across at least 6 interfaces) and do not easily 15098allow for future expansion to 64 bits if necessary. Also, on some 15099systems, it would not be appropriate to demultiplex the access 15100width (8, 16, 32,or 64) before calling the OSL if the 15101corresponding native OS interfaces contain a similar access width 15102parameter. For these reasons, the 18 address space interfaces 15103have been replaced by these 6 new ones: 15104 15105AcpiOsReadPciConfiguration 15106AcpiOsWritePciConfiguration 15107AcpiOsReadMemory 15108AcpiOsWriteMemory 15109AcpiOsReadPort 15110AcpiOsWritePort 15111 15112Added a new interface named AcpiOsGetRootPointer to allow the OSL 15113to perform the platform and/or OS-specific actions necessary to 15114obtain the ACPI RSDP table pointer. On IA-32 platforms, this 15115interface will simply call down to the CA core to perform the low- 15116memory search for the table. On IA-64, the RSDP is obtained from 15117EFI. Migrating this interface to the OSL allows the CA core to 15118 15119remain OS and platform independent. 15120 15121Added a new interface named AcpiOsSignal to provide a generic 15122"function code and pointer" interface for various miscellaneous 15123signals and notifications that must be made to the host OS. The 15124first such signals are intended to support the ASL Fatal and 15125Breakpoint operators. In the latter case, the AcpiOsBreakpoint 15126interface has been obsoleted. 15127 15128The definition of the AcpiFormatException interface has been 15129changed to simplify its use. The caller no longer must supply a 15130buffer to the call; A pointer to a const string is now returned 15131directly. This allows the call to be easily used in printf 15132statements, etc. since the caller does not have to manage a local 15133buffer. 15134 15135 15136 ASL Compiler, Version X2025: 15137 15138The ACPI 2.0 Switch/Case/Default operators have been implemented 15139and are fully functional. They will work with all ACPI 1.0 15140interpreters, since the operators are simply translated to If/Else 15141pairs. 15142 15143The ACPI 2.0 ElseIf operator is implemented and will also work 15144with 1.0 interpreters, for the same reason. 15145 15146Implemented support for ACPI 2.0 variable-length packages. These 15147packages have a separate opcode, and their size is determined by 15148the interpreter at run-time. 15149 15150Documentation The ACPI CA Programmer Reference has been updated to 15151reflect the new interfaces and changes to existing interfaces. 15152 15153 ------------------------------------------ 15154Summary of changes for this label: 06_15_01 15155 15156 ACPI CA Core Subsystem: 15157 15158Fixed a problem where a DWORD-accessed field within a Buffer 15159object would get its byte address inadvertently rounded down to 15160the nearest DWORD. Buffers are always Byte-accessible. 15161 15162 ASL Compiler, version X2024: 15163 15164Fixed a problem where the Switch() operator would either fault or 15165hang the compiler. Note however, that the AML code for this ACPI 151662.0 operator is not yet implemented. 15167 15168Compiler uses the new AcpiOsGetTimer interface to obtain compile 15169timings. 15170 15171Implementation of the CreateField operator automatically converts 15172a reference to a named field within a resource descriptor from a 15173byte offset to a bit offset if required. 15174 15175Added some missing named fields from the resource descriptor 15176support. These are the names that are automatically created by the 15177compiler to reference fields within a descriptor. They are only 15178valid at compile time and are not passed through to the AML 15179interpreter. 15180 15181Resource descriptor named fields are now typed as Integers and 15182subject to compile-time typechecking when used in expressions. 15183 15184 ------------------------------------------ 15185Summary of changes for this label: 05_18_01 15186 15187 ACPI CA Core Subsystem: 15188 15189Fixed a couple of problems in the Field support code where bits 15190from adjacent fields could be returned along with the proper field 15191bits. Restructured the field support code to improve performance, 15192readability and maintainability. 15193 15194New DEBUG_PRINTP macro automatically inserts the procedure name 15195into the output, saving hundreds of copies of procedure name 15196strings within the source, shrinking the memory footprint of the 15197debug version of the core subsystem. 15198 15199 Source Code Structure: 15200 15201The source code directory tree was restructured to reflect the 15202current organization of the component architecture. Some files 15203and directories have been moved and/or renamed. 15204 15205 Linux: 15206 15207Fixed leaking kacpidpc processes. 15208 15209Fixed queueing event data even when /proc/acpi/event is not 15210opened. 15211 15212 ASL Compiler, version X2020: 15213 15214Memory allocation performance enhancement - over 24X compile time 15215improvement on large ASL files. Parse nodes and namestring 15216buffers are now allocated from a large internal compiler buffer. 15217 15218The temporary .SRC file is deleted unless the "-s" option is 15219specified 15220 15221The "-d" debug output option now sends all output to the .DBG file 15222instead of the console. 15223 15224"External" second parameter is now optional 15225 15226"ElseIf" syntax now properly allows the predicate 15227 15228Last operand to "Load" now recognized as a Target operand 15229 15230Debug object can now be used anywhere as a normal object. 15231 15232ResourceTemplate now returns an object of type BUFFER 15233 15234EISAID now returns an object of type INTEGER 15235 15236"Index" now works with a STRING operand 15237 15238"LoadTable" now accepts optional parameters 15239 15240"ToString" length parameter is now optional 15241 15242"Interrupt (ResourceType," parse error fixed. 15243 15244"Register" with a user-defined region space parse error fixed 15245 15246Escaped backslash at the end of a string ("\\") scan/parse error 15247fixed 15248 15249"Revision" is now an object of type INTEGER. 15250 15251 15252 15253------------------------------------------ 15254Summary of changes for this label: 05_02_01 15255 15256Linux: 15257 15258/proc/acpi/event now blocks properly. 15259 15260Removed /proc/sys/acpi. You can still dump your DSDT from 15261/proc/acpi/dsdt. 15262 15263 ACPI CA Core Subsystem: 15264 15265Fixed a problem introduced in the previous label where some of the 15266"small" resource descriptor types were not recognized. 15267 15268Improved error messages for the case where an ASL Field is outside 15269the range of the parent operation region. 15270 15271 ASL Compiler, version X2018: 15272 15273 15274Added error detection for ASL Fields that extend beyond the length 15275of the parent operation region (only if the length of the region 15276is known at compile time.) This includes fields that have a 15277minimum access width that is smaller than the parent region, and 15278individual field units that are partially or entirely beyond the 15279extent of the parent. 15280 15281 15282 15283------------------------------------------ 15284Summary of changes for this label: 04_27_01 15285 15286 ACPI CA Core Subsystem: 15287 15288Fixed a problem where the namespace mutex could be released at the 15289wrong time during execution of AcpiRemoveAddressSpaceHandler. 15290 15291Added optional thread ID output for debug traces, to simplify 15292debugging of multiple threads. Added context switch notification 15293when the debug code realizes that a different thread is now 15294executing ACPI code. 15295 15296Some additional external data types have been prefixed with the 15297string "ACPI_" for consistency. This may effect existing code. 15298The data types affected are the external callback typedefs - e.g., 15299 15300WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 15301 15302 Linux: 15303 15304Fixed an issue with the OSL semaphore implementation where a 15305thread was waking up with an error from receiving a SIGCHLD 15306signal. 15307 15308Linux version of ACPI CA now uses the system C library for string 15309manipulation routines instead of a local implementation. 15310 15311Cleaned up comments and removed TBDs. 15312 15313 ASL Compiler, version X2017: 15314 15315Enhanced error detection and reporting for all file I/O 15316operations. 15317 15318 Documentation: 15319 15320Programmer Reference updated to version 1.06. 15321 15322 15323 15324------------------------------------------ 15325Summary of changes for this label: 04_13_01 15326 15327 ACPI CA Core Subsystem: 15328 15329Restructured support for BufferFields and RegionFields. 15330BankFields support is now fully operational. All known 32-bit 15331limitations on field sizes have been removed. Both BufferFields 15332and (Operation) RegionFields are now supported by the same field 15333management code. 15334 15335Resource support now supports QWORD address and IO resources. The 1533616/32/64 bit address structures and the Extended IRQ structure 15337have been changed to properly handle Source Resource strings. 15338 15339A ThreadId of -1 is now used to indicate a "mutex not acquired" 15340condition internally and must never be returned by AcpiOsThreadId. 15341This reserved value was changed from 0 since Unix systems allow a 15342thread ID of 0. 15343 15344Linux: 15345 15346Driver code reorganized to enhance portability 15347 15348Added a kernel configuration option to control ACPI_DEBUG 15349 15350Fixed the EC driver to honor _GLK. 15351 15352ASL Compiler, version X2016: 15353 15354Fixed support for the "FixedHw" keyword. Previously, the FixedHw 15355address space was set to 0, not 0x7f as it should be. 15356 15357 ------------------------------------------ 15358Summary of changes for this label: 03_13_01 15359 15360 ACPI CA Core Subsystem: 15361 15362During ACPI initialization, the _SB_._INI method is now run if 15363present. 15364 15365Notify handler fix - notifies are deferred until the parent method 15366completes execution. This fixes the "mutex already acquired" 15367issue seen occasionally. 15368 15369Part of the "implicit conversion" rules in ACPI 2.0 have been 15370found to cause compatibility problems with existing ASL/AML. The 15371convert "result-to-target-type" implementation has been removed 15372for stores to method Args and Locals. Source operand conversion 15373is still fully implemented. Possible changes to ACPI 2.0 15374specification pending. 15375 15376Fix to AcpiRsCalculatePciRoutingTableLength to return correct 15377length. 15378 15379Fix for compiler warnings for 64-bit compiles. 15380 15381 Linux: 15382 15383/proc output aligned for easier parsing. 15384 15385Release-version compile problem fixed. 15386 15387New kernel configuration options documented in Configure.help. 15388 15389IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 15390context" message. 15391 15392 OSPM: 15393 15394Power resource driver integrated with bus manager. 15395 15396Fixed kernel fault during active cooling for thermal zones. 15397 15398Source Code: 15399 15400The source code tree has been restructured. 15401 15402 15403 15404------------------------------------------ 15405Summary of changes for this label: 03_02_01 15406 15407 Linux OS Services Layer (OSL): 15408 15409Major revision of all Linux-specific code. 15410 15411Modularized all ACPI-specific drivers. 15412 15413Added new thermal zone and power resource drivers. 15414 15415Revamped /proc interface (new functionality is under /proc/acpi). 15416 15417New kernel configuration options. 15418 15419 Linux known issues: 15420 15421New kernel configuration options not documented in Configure.help 15422yet. 15423 15424 15425Module dependencies not currently implemented. If used, they 15426should be loaded in this order: busmgr, power, ec, system, 15427processor, battery, ac_adapter, button, thermal. 15428 15429Modules will not load if CONFIG_MODVERSION is set. 15430 15431IBM 600E - entering S5 may reboot instead of shutting down. 15432 15433IBM 600E - Sleep button may generate "Invalid <NULL> context" 15434message. 15435 15436Some systems may fail with "execution mutex already acquired" 15437message. 15438 15439 ACPI CA Core Subsystem: 15440 15441Added a new OSL Interface, AcpiOsGetThreadId. This was required 15442for the deadlock detection code. Defined to return a non-zero, 32- 15443bit thread ID for the currently executing thread. May be a non- 15444zero constant integer on single-thread systems. 15445 15446Implemented deadlock detection for internal subsystem mutexes. We 15447may add conditional compilation for this code (debug only) later. 15448 15449ASL/AML Mutex object semantics are now fully supported. This 15450includes multiple acquires/releases by owner and support for the 15451 15452Mutex SyncLevel parameter. 15453 15454A new "Force Release" mechanism automatically frees all ASL 15455Mutexes that have been acquired but not released when a thread 15456exits the interpreter. This forces conformance to the ACPI spec 15457("All mutexes must be released when an invocation exits") and 15458prevents deadlocked ASL threads. This mechanism can be expanded 15459(later) to monitor other resource acquisitions if OEM ASL code 15460continues to misbehave (which it will). 15461 15462Several new ACPI exception codes have been added for the Mutex 15463support. 15464 15465Recursive method calls are now allowed and supported (the ACPI 15466spec does in fact allow recursive method calls.) The number of 15467recursive calls is subject to the restrictions imposed by the 15468SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 15469parameter. 15470 15471Implemented support for the SyncLevel parameter for control 15472methods (ACPI 2.0 feature) 15473 15474Fixed a deadlock problem when multiple threads attempted to use 15475the interpreter. 15476 15477Fixed a problem where the string length of a String package 15478element was not always set in a package returned from 15479AcpiEvaluateObject. 15480 15481Fixed a problem where the length of a String package element was 15482not always included in the length of the overall package returned 15483from AcpiEvaluateObject. 15484 15485Added external interfaces (Acpi*) to the ACPI debug memory 15486manager. This manager keeps a list of all outstanding 15487allocations, and can therefore detect memory leaks and attempts to 15488free memory blocks more than once. Useful for code such as the 15489power manager, etc. May not be appropriate for device drivers. 15490Performance with the debug code enabled is slow. 15491 15492The ACPI Global Lock is now an optional hardware element. 15493 15494 ASL Compiler Version X2015: 15495 15496Integrated changes to allow the compiler to be generated on 15497multiple platforms. 15498 15499Linux makefile added to generate the compiler on Linux 15500 15501 Source Code: 15502 15503All platform-specific headers have been moved to their own 15504subdirectory, Include/Platform. 15505 15506New source file added, Interpreter/ammutex.c 15507 15508New header file, Include/acstruct.h 15509 15510 Documentation: 15511 15512The programmer reference has been updated for the following new 15513interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 15514 15515 ------------------------------------------ 15516Summary of changes for this label: 02_08_01 15517 15518Core ACPI CA Subsystem: Fixed a problem where an error was 15519incorrectly returned if the return resource buffer was larger than 15520the actual data (in the resource interfaces). 15521 15522References to named objects within packages are resolved to the 15523 15524full pathname string before packages are returned directly (via 15525the AcpiEvaluateObject interface) or indirectly via the resource 15526interfaces. 15527 15528Linux OS Services Layer (OSL): 15529 15530Improved /proc battery interface. 15531 15532 15533Added C-state debugging output and other miscellaneous fixes. 15534 15535ASL Compiler Version X2014: 15536 15537All defined method arguments can now be used as local variables, 15538including the ones that are not actually passed in as parameters. 15539The compiler tracks initialization of the arguments and issues an 15540exception if they are used without prior assignment (just like 15541locals). 15542 15543The -o option now specifies a filename prefix that is used for all 15544output files, including the AML output file. Otherwise, the 15545default behavior is as follows: 1) the AML goes to the file 15546specified in the DSDT. 2) all other output files use the input 15547source filename as the base. 15548 15549 ------------------------------------------ 15550Summary of changes for this label: 01_25_01 15551 15552Core ACPI CA Subsystem: Restructured the implementation of object 15553store support within the interpreter. This includes support for 15554the Store operator as well as any ASL operators that include a 15555target operand. 15556 15557Partially implemented support for Implicit Result-to-Target 15558conversion. This is when a result object is converted on the fly 15559to the type of an existing target object. Completion of this 15560support is pending further analysis of the ACPI specification 15561concerning this matter. 15562 15563CPU-specific code has been removed from the subsystem (hardware 15564directory). 15565 15566New Power Management Timer functions added 15567 15568Linux OS Services Layer (OSL): Moved system state transition code 15569to the core, fixed it, and modified Linux OSL accordingly. 15570 15571Fixed C2 and C3 latency calculations. 15572 15573 15574We no longer use the compilation date for the version message on 15575initialization, but retrieve the version from AcpiGetSystemInfo(). 15576 15577Incorporated for fix Sony VAIO machines. 15578 15579Documentation: The Programmer Reference has been updated and 15580reformatted. 15581 15582 15583ASL Compiler: Version X2013: Fixed a problem where the line 15584numbering and error reporting could get out of sync in the 15585presence of multiple include files. 15586 15587 ------------------------------------------ 15588Summary of changes for this label: 01_15_01 15589 15590Core ACPI CA Subsystem: 15591 15592Implemented support for type conversions in the execution of the 15593ASL Concatenate operator (The second operand is converted to 15594match the type of the first operand before concatenation.) 15595 15596Support for implicit source operand conversion is partially 15597implemented. The ASL source operand types Integer, Buffer, and 15598String are freely interchangeable for most ASL operators and are 15599converted by the interpreter on the fly as required. Implicit 15600Target operand conversion (where the result is converted to the 15601target type before storing) is not yet implemented. 15602 15603Support for 32-bit and 64-bit BCD integers is implemented. 15604 15605Problem fixed where a field read on an aligned field could cause a 15606read past the end of the field. 15607 15608New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 15609does not return a value, but the caller expects one. (The ASL 15610compiler flags this as a warning.) 15611 15612ASL Compiler: 15613 15614Version X2011: 156151. Static typechecking of all operands is implemented. This 15616prevents the use of invalid objects (such as using a Package where 15617an Integer is required) at compile time instead of at interpreter 15618run-time. 156192. The ASL source line is printed with ALL errors and warnings. 156203. Bug fix for source EOF without final linefeed. 156214. Debug option is split into a parse trace and a namespace trace. 156225. Namespace output option (-n) includes initial values for 15623integers and strings. 156246. Parse-only option added for quick syntax checking. 156257. Compiler checks for duplicate ACPI name declarations 15626 15627Version X2012: 156281. Relaxed typechecking to allow interchangeability between 15629strings, integers, and buffers. These types are now converted by 15630the interpreter at runtime. 156312. Compiler reports time taken by each internal subsystem in the 15632debug output file. 15633 15634 15635 ------------------------------------------ 15636Summary of changes for this label: 12_14_00 15637 15638ASL Compiler: 15639 15640This is the first official release of the compiler. Since the 15641compiler requires elements of the Core Subsystem, this label 15642synchronizes everything. 15643 15644------------------------------------------ 15645Summary of changes for this label: 12_08_00 15646 15647 15648Fixed a problem where named references within the ASL definition 15649of both OperationRegions and CreateXXXFields did not work 15650properly. The symptom was an AE_AML_OPERAND_TYPE during 15651initialization of the region/field. This is similar (but not 15652related internally) to the problem that was fixed in the last 15653label. 15654 15655Implemented both 32-bit and 64-bit support for the BCD ASL 15656functions ToBCD and FromBCD. 15657 15658Updated all legal headers to include "2000" in the copyright 15659years. 15660 15661 ------------------------------------------ 15662Summary of changes for this label: 12_01_00 15663 15664Fixed a problem where method invocations within the ASL definition 15665of both OperationRegions and CreateXXXFields did not work 15666properly. The symptom was an AE_AML_OPERAND_TYPE during 15667initialization of the region/field: 15668 15669 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 15670[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 15671(0x3005) 15672 15673Fixed a problem where operators with more than one nested 15674subexpression would fail. The symptoms were varied, by mostly 15675AE_AML_OPERAND_TYPE errors. This was actually a rather serious 15676problem that has gone unnoticed until now. 15677 15678 Subtract (Add (1,2), Multiply (3,4)) 15679 15680Fixed a problem where AcpiGetHandle didn't quite get fixed in the 15681previous build (The prefix part of a relative path was handled 15682incorrectly). 15683 15684Fixed a problem where Operation Region initialization failed if 15685the operation region name was a "namepath" instead of a simple 15686"nameseg". Symptom was an AE_NO_OPERAND error. 15687 15688Fixed a problem where an assignment to a local variable via the 15689indirect RefOf mechanism only worked for the first such 15690assignment. Subsequent assignments were ignored. 15691 15692 ------------------------------------------ 15693Summary of changes for this label: 11_15_00 15694 15695ACPI 2.0 table support with backwards support for ACPI 1.0 and the 156960.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 15697the AML interpreter does NOT have support for the new 2.0 ASL 15698grammar terms at this time. 15699 15700All ACPI hardware access is via the GAS structures in the ACPI 2.0 15701FADT. 15702 15703All physical memory addresses across all platforms are now 64 bits 15704wide. Logical address width remains dependent on the platform 15705(i.e., "void *"). 15706 15707AcpiOsMapMemory interface changed to a 64-bit physical address. 15708 15709The AML interpreter integer size is now 64 bits, as per the ACPI 157102.0 specification. 15711 15712For backwards compatibility with ACPI 1.0, ACPI tables with a 15713revision number less than 2 use 32-bit integers only. 15714 15715Fixed a problem where the evaluation of OpRegion operands did not 15716always resolve them to numbers properly. 15717 15718------------------------------------------ 15719Summary of changes for this label: 10_20_00 15720 15721Fix for CBN_._STA issue. This fix will allow correct access to 15722CBN_ OpRegions when the _STA returns 0x8. 15723 15724Support to convert ACPI constants (Ones, Zeros, One) to actual 15725values before a package object is returned 15726 15727Fix for method call as predicate to if/while construct causing 15728incorrect if/while behavior 15729 15730Fix for Else block package lengths sometimes calculated wrong (if 15731block > 63 bytes) 15732 15733Fix for Processor object length field, was always zero 15734 15735Table load abort if FACP sanity check fails 15736 15737Fix for problem with Scope(name) if name already exists 15738 15739Warning emitted if a named object referenced cannot be found 15740(resolved) during method execution. 15741 15742 15743 15744 15745 15746------------------------------------------ 15747Summary of changes for this label: 9_29_00 15748 15749New table initialization interfaces: AcpiInitializeSubsystem no 15750longer has any parameters AcpiFindRootPointer - Find the RSDP (if 15751necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 15752>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 15753AcpiLoadTables 15754 15755Note: These interface changes require changes to all existing OSDs 15756 15757The PCI_Config default address space handler is always installed 15758at the root namespace object. 15759 15760------------------------------------------- 15761Summary of changes for this label: 09_15_00 15762 15763The new initialization architecture is implemented. New 15764interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 15765AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 15766 15767(Namespace is automatically loaded when a table is loaded) 15768 15769The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1577052 bytes to 32 bytes. There is usually one of these for every 15771namespace object, so the memory savings is significant. 15772 15773Implemented just-in-time evaluation of the CreateField operators. 15774 15775Bug fixes for IA-64 support have been integrated. 15776 15777Additional code review comments have been implemented 15778 15779The so-called "third pass parse" has been replaced by a final walk 15780through the namespace to initialize all operation regions (address 15781spaces) and fields that have not yet been initialized during the 15782execution of the various _INI and REG methods. 15783 15784New file - namespace/nsinit.c 15785 15786------------------------------------------- 15787Summary of changes for this label: 09_01_00 15788 15789Namespace manager data structures have been reworked to change the 15790primary object from a table to a single object. This has 15791resulted in dynamic memory savings of 3X within the namespace and 157922X overall in the ACPI CA subsystem. 15793 15794Fixed problem where the call to AcpiEvFindPciRootBuses was 15795inadvertently left commented out. 15796 15797Reduced the warning count when generating the source with the GCC 15798compiler. 15799 15800Revision numbers added to each module header showing the 15801SourceSafe version of the file. Please refer to this version 15802number when giving us feedback or comments on individual modules. 15803 15804The main object types within the subsystem have been renamed to 15805clarify their purpose: 15806 15807ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 15808ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 15809ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 15810 15811NOTE: no changes to the initialization sequence are included in 15812this label. 15813 15814------------------------------------------- 15815Summary of changes for this label: 08_23_00 15816 15817Fixed problem where TerminateControlMethod was being called 15818multiple times per method 15819 15820Fixed debugger problem where single stepping caused a semaphore to 15821be oversignalled 15822 15823Improved performance through additional parse object caching - 15824added ACPI_EXTENDED_OP type 15825 15826------------------------------------------- 15827Summary of changes for this label: 08_10_00 15828 15829Parser/Interpreter integration: Eliminated the creation of 15830complete parse trees for ACPI tables and control methods. 15831Instead, parse subtrees are created and then deleted as soon as 15832they are processed (Either entered into the namespace or executed 15833by the interpreter). This reduces the use of dynamic kernel 15834memory significantly. (about 10X) 15835 15836Exception codes broken into classes and renumbered. Be sure to 15837recompile all code that includes acexcep.h. Hopefully we won't 15838have to renumber the codes again now that they are split into 15839classes (environment, programmer, AML code, ACPI table, and 15840internal). 15841 15842Fixed some additional alignment issues in the Resource Manager 15843subcomponent 15844 15845Implemented semaphore tracking in the AcpiExec utility, and fixed 15846several places where mutexes/semaphores were being unlocked 15847without a corresponding lock operation. There are no known 15848semaphore or mutex "leaks" at this time. 15849 15850Fixed the case where an ASL Return operator is used to return an 15851unnamed package. 15852 15853------------------------------------------- 15854Summary of changes for this label: 07_28_00 15855 15856Fixed a problem with the way addresses were calculated in 15857AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 15858manifested itself when a Field was created with WordAccess or 15859DwordAccess, but the field unit defined within the Field was less 15860 15861than a Word or Dword. 15862 15863Fixed a problem in AmlDumpOperands() module's loop to pull 15864operands off of the operand stack to display information. The 15865problem manifested itself as a TLB error on 64-bit systems when 15866accessing an operand stack with two or more operands. 15867 15868Fixed a problem with the PCI configuration space handlers where 15869context was getting confused between accesses. This required a 15870change to the generic address space handler and address space 15871setup definitions. Handlers now get both a global handler context 15872(this is the one passed in by the user when executing 15873AcpiInstallAddressSpaceHandler() and a specific region context 15874that is unique to each region (For example, the _ADR, _SEG and 15875_BBN values associated with a specific region). The generic 15876function definitions have changed to the following: 15877 15878typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 15879UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 15880*HandlerContext, // This used to be void *Context void 15881*RegionContext); // This is an additional parameter 15882 15883typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 15884RegionHandle, UINT32 Function, void *HandlerContext, void 15885**RegionContext); // This used to be **ReturnContext 15886 15887------------------------------------------- 15888Summary of changes for this label: 07_21_00 15889 15890Major file consolidation and rename. All files within the 15891interpreter have been renamed as well as most header files. This 15892was done to prevent collisions with existing files in the host 15893OSs -- filenames such as "config.h" and "global.h" seem to be 15894quite common. The VC project files have been updated. All 15895makefiles will require modification. 15896 15897The parser/interpreter integration continues in Phase 5 with the 15898implementation of a complete 2-pass parse (the AML is parsed 15899twice) for each table; This avoids the construction of a huge 15900parse tree and therefore reduces the amount of dynamic memory 15901required by the subsystem. Greater use of the parse object cache 15902means that performance is unaffected. 15903 15904Many comments from the two code reviews have been rolled in. 15905 15906The 64-bit alignment support is complete. 15907 15908------------------------------------------- 15909Summary of changes for this label: 06_30_00 15910 15911With a nod and a tip of the hat to the technology of yesteryear, 15912we've added support in the source code for 80 column output 15913devices. The code is now mostly constrained to 80 columns or 15914less to support environments and editors that 1) cannot display 15915or print more than 80 characters on a single line, and 2) cannot 15916disable line wrapping. 15917 15918A major restructuring of the namespace data structure has been 15919completed. The result is 1) cleaner and more 15920understandable/maintainable code, and 2) a significant reduction 15921in the dynamic memory requirement for each named ACPI object 15922(almost half). 15923 15924------------------------------------------- 15925Summary of changes for this label: 06_23_00 15926 15927Linux support has been added. In order to obtain approval to get 15928the ACPI CA subsystem into the Linux kernel, we've had to make 15929quite a few changes to the base subsystem that will affect all 15930users (all the changes are generic and OS- independent). The 15931effects of these global changes have been somewhat far reaching. 15932Files have been merged and/or renamed and interfaces have been 15933renamed. The major changes are described below. 15934 15935Osd* interfaces renamed to AcpiOs* to eliminate namespace 15936pollution/confusion within our target kernels. All OSD 15937interfaces must be modified to match the new naming convention. 15938 15939Files merged across the subsystem. A number of the smaller source 15940and header files have been merged to reduce the file count and 15941increase the density of the existing files. There are too many 15942to list here. In general, makefiles that call out individual 15943files will require rebuilding. 15944 15945Interpreter files renamed. All interpreter files now have the 15946prefix am* instead of ie* and is*. 15947 15948Header files renamed: The acapi.h file is now acpixf.h. The 15949acpiosd.h file is now acpiosxf.h. We are removing references to 15950the acronym "API" since it is somewhat windowsy. The new name is 15951"external interface" or xface or xf in the filenames.j 15952 15953 15954All manifest constants have been forced to upper case (some were 15955mixed case.) Also, the string "ACPI_" has been prepended to many 15956(not all) of the constants, typedefs, and structs. 15957 15958The globals "DebugLevel" and "DebugLayer" have been renamed 15959"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 15960 15961All other globals within the subsystem are now prefixed with 15962"AcpiGbl_" Internal procedures within the subsystem are now 15963prefixed with "Acpi" (with only a few exceptions). The original 15964two-letter abbreviation for the subcomponent remains after "Acpi" 15965- for example, CmCallocate became AcpiCmCallocate. 15966 15967Added a source code translation/conversion utility. Used to 15968generate the Linux source code, it can be modified to generate 15969other types of source as well. Can also be used to cleanup 15970existing source by removing extraneous spaces and blank lines. 15971Found in tools/acpisrc/* 15972 15973OsdUnMapMemory was renamed to OsdUnmapMemory and then 15974AcpiOsUnmapMemory. (UnMap became Unmap). 15975 15976A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 15977When set to one, this indicates that the caller wants to use the 15978 15979semaphore as a mutex, not a counting semaphore. ACPI CA uses 15980both types. However, implementers of this call may want to use 15981different OS primitives depending on the type of semaphore 15982requested. For example, some operating systems provide separate 15983 15984"mutex" and "semaphore" interfaces - where the mutex interface is 15985much faster because it doesn't have all the overhead of a full 15986semaphore implementation. 15987 15988Fixed a deadlock problem where a method that accesses the PCI 15989address space can block forever if it is the first access to the 15990space. 15991 15992------------------------------------------- 15993Summary of changes for this label: 06_02_00 15994 15995Support for environments that cannot handle unaligned data 15996accesses (e.g. firmware and OS environments devoid of alignment 15997handler technology namely SAL/EFI and the IA-64 Linux kernel) has 15998been added (via configurable macros) in these three areas: - 15999Transfer of data from the raw AML byte stream is done via byte 16000moves instead of word/dword/qword moves. - External objects are 16001aligned within the user buffer, including package elements (sub- 16002objects). - Conversion of name strings to UINT32 Acpi Names is now 16003done byte-wise. 16004 16005The Store operator was modified to mimic Microsoft's 16006implementation when storing to a Buffer Field. 16007 16008Added a check of the BM_STS bit before entering C3. 16009 16010The methods subdirectory has been obsoleted and removed. A new 16011file, cmeval.c subsumes the functionality. 16012 16013A 16-bit (DOS) version of AcpiExec has been developed. The 16014makefile is under the acpiexec directory. 16015