1 ----------------------------------------
2 12 February 2016. Summary of changes for version 20160212:
4 This release is available at https://acpica.org/downloads
6 1) ACPICA kernel-resident subsystem:
8 Implemented full support for the ACPI 6.1 specification (released in
9 January). This version of the specification is available at:
10 http://www.uefi.org/specifications
12 Only a relatively small number of changes were required in ACPICA to
13 support ACPI 6.1, in these areas:
14 - New predefined names
16 - A new subtable for HEST
17 - A few other header changes for new values
19 Ensure \_SB_._INI is executed before any _REG methods are executed. There
20 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
22 Reverted a change made in version 20151218 which enabled method
23 invocations to be targets of various ASL operators (SuperName and Target
24 grammar elements). While the new behavior is supported by the ACPI
25 specification, other AML interpreters do not support this behavior and
26 never will. The ACPI specification will be updated for ACPI 6.2 to remove
27 this support. Therefore, the change was reverted to the original ACPICA
30 ACPICA now supports the GCC 6 compiler.
32 Current Release: (Note: build changes increased sizes)
33 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
34 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
36 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
37 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
40 2) iASL Compiler/Disassembler and Tools:
42 Completed full support for the ACPI 6.0 External() AML opcode. The
43 compiler emits an external AML opcode for each ASL External statement.
44 This opcode is used by the disassembler to assist with the disassembly of
45 external control methods by specifying the required number of arguments
46 for the method. AML interpreters do not use this opcode. To ensure that
47 interpreters do not even see the opcode, a block of one or more external
48 opcodes is surrounded by an "If(0)" construct. As this feature becomes
49 commonly deployed in BIOS code, the ability of disassemblers to correctly
50 disassemble AML code will be greatly improved. David Box.
52 iASL: Implemented support for an optional cross-reference output file.
53 The -lx option will create a the cross-reference file with the suffix
54 "xrf". Three different types of cross-reference are created in this file:
55 - List of object references made from within each control method
56 - Invocation (caller) list for each user-defined control method
57 - List of references to each non-method object in the namespace
59 iASL: Method invocations as ASL Target operands are now disallowed and
60 flagged as errors in preparation for ACPI 6.2 (see the description of the
63 ----------------------------------------
64 8 January 2016. Summary of changes for version 20160108:
66 1) ACPICA kernel-resident subsystem:
68 Updated all ACPICA copyrights and signons to 2016: Added the 2016
69 copyright to all source code module headers and utility/tool signons.
70 This includes the standard Linux dual-license header. This affects
71 virtually every file in the ACPICA core subsystem, iASL compiler, all
72 ACPICA utilities, and the ACPICA test suite.
74 Fixed a regression introduced in version 20151218 concerning the
75 execution of so-called module-level ASL/AML code. Namespace objects
76 created under a module-level If() construct were not properly/fully
77 entered into the namespace and could cause an interpreter fault when
80 Example Code and Data Size: These are the sizes for the OS-independent
81 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
82 debug version of the code includes the debug output trace mechanism and
83 has a much larger code and data size.
86 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
87 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
89 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
90 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
93 2) iASL Compiler/Disassembler and Tools:
95 Fixed a problem with the compilation of the GpioIo and GpioInt resource
96 descriptors. The _PIN field name was incorrectly defined to be an array
97 of 32-bit values, but the _PIN values are in fact 16 bits each. This
98 would cause incorrect bit width warnings when using Word (16-bit) fields
99 to access the descriptors.
102 ----------------------------------------
103 18 December 2015. Summary of changes for version 20151218:
105 1) ACPICA kernel-resident subsystem:
107 Implemented per-AML-table execution of "module-level code" as individual
108 ACPI tables are loaded into the namespace during ACPICA initialization.
109 In other words, any module-level code within an AML table is executed
110 immediately after the table is loaded, instead of batched and executed
111 after all of the tables have been loaded. This provides compatibility
112 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
115 To fully support the feature above, the default operation region handlers
116 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
117 installed before any ACPI tables are loaded. This enables module-level
118 code to access these address spaces during the table load and module-
119 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
122 Implemented several changes to the internal _REG support in conjunction
123 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
124 utilities for the changes above. Although these tools were changed, host
125 operating systems that simply use the default handlers for SystemMemory,
126 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
128 For example, in the code below, DEV1 is conditionally added to the
129 namespace by the DSDT via module-level code that accesses an operation
130 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
131 created immediately after the DSDT is loaded in order for the SSDT to
132 successfully reference DEV1. Previously, this code would cause an
133 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
134 fully supported by ACPICA.
136 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
138 OperationRegion (OPR1, SystemMemory, 0x400, 32)
139 Field (OPR1, AnyAcc, NoLock, Preserve)
150 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
152 External (\DEV1, DeviceObj)
158 Fixed an AML interpreter problem where control method invocations were
159 not handled correctly when the invocation was itself a SuperName argument
160 to another ASL operator. In these cases, the method was not invoked.
161 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
169 Signal, Release, Reset
172 Implemented automatic String-to-ObjectReference conversion support for
173 packages returned by predefined names (such as _DEP). A common BIOS error
174 is to add double quotes around an ObjectReference namepath, which turns
175 the reference into an unexpected string object. This support detects the
176 problem and corrects it before the package is returned to the caller that
177 invoked the method. Lv Zheng.
179 Implemented extensions to the Concatenate operator. Concatenate now
180 accepts any type of object, it is not restricted to simply
181 Integer/String/Buffer. For objects other than these 3 basic data types,
182 the argument is treated as a string containing the name of the object
183 type. This expands the utility of Concatenate and the Printf/Fprintf
184 macros. ACPICA BZ 1222.
186 Cleaned up the output of the ASL Debug object. The timer() value is now
187 optional and no longer emitted by default. Also, the basic data types of
188 Integer/String/Buffer are simply emitted as their values, without a data
189 type string -- since the data type is obvious from the output. ACPICA BZ
192 Example Code and Data Size: These are the sizes for the OS-independent
193 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
194 debug version of the code includes the debug output trace mechanism and
195 has a much larger code and data size.
198 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
199 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
201 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
202 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
205 2) iASL Compiler/Disassembler and Tools:
207 iASL: Fixed some issues with the ASL Include() operator. This operator
208 was incorrectly defined in the iASL parser rules, causing a new scope to
209 be opened for the code within the include file. This could lead to
210 several issues, including allowing ASL code that is technically illegal
211 and not supported by AML interpreters. Note, this does not affect the
212 related #include preprocessor operator. ACPICA BZ 1212.
214 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
215 operator is essentially an ASL macro since there is no AML opcode
216 associated with it. The code emitted by the iASL compiler for ElseIf is
217 an Else opcode followed immediately by an If opcode. The disassembler
218 will now emit an ElseIf if it finds an Else immediately followed by an
219 If. This simplifies the decoded ASL, especially for deeply nested
220 If..Else and large Switch constructs. Thus, the disassembled code more
221 closely follows the original source ASL. ACPICA BZ 1211. Example:
233 ElseIf (Arg0 == 0x02)
238 AcpiExec: Added support for the new module level code behavior and the
239 early region installation. This required a small change to the
240 initialization, since AcpiExec must install its own operation region
243 AcpiExec: Added support to make the debug object timer optional. Default
244 is timer disabled. This cleans up the debug object output -- the timer
247 AcpiExec: Multiple ACPI tables are now loaded in the order that they
248 appear on the command line. This can be important when there are
249 interdependencies/references between the tables.
251 iASL/Templates. Add support to generate template files with multiple
252 SSDTs within a single output file. Also added ommand line support to
253 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
257 ----------------------------------------
258 24 November 2015. Summary of changes for version 20151124:
260 1) ACPICA kernel-resident subsystem:
262 Fixed a possible regression for a previous update to FADT handling. The
263 FADT no longer has a fixed table ID, causing some issues with code that
264 was hardwired to a specific ID. Lv Zheng.
266 Fixed a problem where the method auto-serialization could interfere with
267 the current SyncLevel. This change makes the auto-serialization support
268 transparent to the SyncLevel support and management.
270 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
271 interface is intended for early access to the namespace during the
272 initial namespace device discovery walk. The _SUB method has been seen to
273 access operation regions in some cases, causing errors because the
274 operation regions are not fully initialized.
276 AML Debugger: Fixed some issues with the terminate/quit/exit commands
277 that can cause faults. Lv Zheng.
279 AML Debugger: Add thread ID support so that single-step mode only applies
280 to the AML Debugger thread. This prevents runtime errors within some
283 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
284 methods that are invoked by this interface are optional, removed warnings
285 emitted for the case where one or more of these methods do not exist.
286 ACPICA BZ 1208, original change by Prarit Bhargava.
288 Made a major pass through the entire ACPICA source code base to
289 standardize formatting that has diverged a bit over time. There are no
290 functional changes, but this will of course cause quite a few code
291 differences from the previous ACPICA release.
293 Example Code and Data Size: These are the sizes for the OS-independent
294 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
295 debug version of the code includes the debug output trace mechanism and
296 has a much larger code and data size.
299 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
300 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
302 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
303 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
306 2) iASL Compiler/Disassembler and Tools:
308 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
309 definition blocks within a single ASL file and the resulting AML file.
310 Support for this type of file was also added to the various tools that
311 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
312 example code below shows two definition blocks within the same file:
314 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
318 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
322 iASL: Enhanced typechecking for the Name() operator. All expressions for
323 the value of the named object must be reduced/folded to a single constant
324 at compile time, as per the ACPI specification (the AML definition of
327 iASL: Fixed some code indentation issues for the -ic and -ia options (C
328 and assembly headers). Now all emitted code correctly begins in column 1.
330 iASL: Added an error message for an attempt to open a Scope() on an
331 object defined in an SSDT. The DSDT is always loaded into the namespace
332 first, so any attempt to open a Scope on an SSDT object will fail at
336 ----------------------------------------
337 30 September 2015. Summary of changes for version 20150930:
339 1) ACPICA kernel-resident subsystem:
341 Debugger: Implemented several changes and bug fixes to assist support for
342 the in-kernel version of the AML debugger. Lv Zheng.
343 - Fix the "predefined" command for in-kernel debugger.
344 - Do not enter debug command loop for the help and version commands.
345 - Disallow "execute" command during execution/single-step of a method.
347 Interpreter: Updated runtime typechecking for all operators that have
348 target operands. The operand is resolved and validated that it is legal.
349 For example, the target cannot be a non-data object such as a Device,
350 Mutex, ThermalZone, etc., as per the ACPI specification.
352 Debugger: Fixed the double-mutex user I/O handshake to work when local
353 deadlock detection is enabled.
355 Debugger: limited display of method locals and arguments (LocalX and
356 ArgX) to only those that have actually been initialized. This prevents
357 lines of extraneous output.
359 Updated the definition of the NFIT table to correct the bit polarity of
360 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
362 Example Code and Data Size: These are the sizes for the OS-independent
363 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
364 debug version of the code includes the debug output trace mechanism and
365 has a much larger code and data size.
368 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
369 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
371 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
372 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
375 2) iASL Compiler/Disassembler and Tools:
377 iASL: Improved the compile-time typechecking for operands of many of the
380 -- Added an option to disable compiler operand/operator typechecking (-
383 -- For the following operators, the TermArg operands are now validated
384 when possible to be Integer data objects: BankField, OperationRegion,
385 DataTableRegion, Buffer, and Package.
387 -- Store (Source, Target): Both the source and target operands are
388 resolved and checked that the operands are both legal. For example,
389 neither operand can be a non-data object such as a Device, Mutex,
390 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
391 operator can be used to store an object to any type of target object.
393 -- Store (Source, Target): If the source is a Package object, the target
394 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
395 is a Package, the source must also be a Package.
397 -- Store (Source, Target): A warning is issued if the source and target
398 resolve to the identical named object.
400 -- Store (Source, <method invocation>): An error is generated for the
401 target method invocation, as this construct is not supported by the AML
404 -- For all ASL math and logic operators, the target operand must be a
405 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
406 includes the function return value also.
408 -- External declarations are also included in the typechecking where
409 possible. External objects defined using the UnknownObj keyword cannot be
410 typechecked, however.
412 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
414 - Legacy code: Index(PKG1, 3)
415 - New ASL+ code: PKG1[3]
416 This completes the ACPI 6.0 ASL+ support as it was the only operator not
419 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
420 spaces were inadvertently appended to the filename, causing file access
421 and deletion problems on some systems.
423 ASL Test Suite (ASLTS): Updated the master makefile to generate all
424 possible compiler output files when building the test suite -- thus
425 exercising these features of the compiler. These files are automatically
426 deleted when the test suite exits.
429 ----------------------------------------
430 18 August 2015. Summary of changes for version 20150818:
432 1) ACPICA kernel-resident subsystem:
434 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
435 Zheng. ACPICA BZ 1186.
437 Completed development to ensure that the ACPICA Disassembler and Debugger
438 are fully standalone components of ACPICA. Removed cross-component
439 dependences. Lv Zheng.
441 The max-number-of-AML-loops is now runtime configurable (previously was
442 compile-time only). This is essentially a loop timeout to force-abort
443 infinite AML loops. ACPCIA BZ 1192.
445 Debugger: Cleanup output to dump ACPI names and namepaths without any
446 trailing underscores. Lv Zheng. ACPICA BZ 1135.
448 Removed unnecessary conditional compilations across the Debugger and
449 Disassembler components where entire modules could be left uncompiled.
451 The aapits test is deprecated and has been removed from the ACPICA git
452 tree. The test has never been completed and has not been maintained, thus
453 becoming rather useless. ACPICA BZ 1015, 794.
455 A batch of small changes to close bugzilla and other reports:
456 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
457 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
458 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
459 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
461 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
463 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
465 - Debugger: Split debugger initialization/termination interfaces. Lv
467 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
469 - AcpiExec: Add debug message during _REG method phase during table
471 - AcpiNames: Fix a regression where some output was missing and no longer
473 - Debugger: General cleanup and simplification. Lv Zheng.
474 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
476 Example Code and Data Size: These are the sizes for the OS-independent
477 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
478 debug version of the code includes the debug output trace mechanism and
479 has a much larger code and data size.
482 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
483 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
485 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
486 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
489 2) iASL Compiler/Disassembler and Tools:
491 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
492 were not handled properly and caused load errors. Now, properly invoke
493 and use the ACPICA auto-reallocate mechanism for ACPI table data
494 structures. ACPICA BZ 1188
496 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
499 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
500 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
501 executed during initialization. ACPICA BZ 1187, 1189.
503 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
504 that corresponds to each disassembled ASL statement, to simplify
505 debugging. ACPICA BZ 1191.
507 Debugger: Add option to the "objects" command to display a summary of the
508 current namespace objects (Object type and count). This is displayed if
509 the command is entered with no arguments.
511 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
514 ----------------------------------------
515 17 July 2015. Summary of changes for version 20150717:
517 1) ACPICA kernel-resident subsystem:
519 Improved the partitioning between the Debugger and Disassembler
520 components. This allows the Debugger to be used standalone within kernel
521 code without the Disassembler (which is used for single stepping also).
522 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
524 Debugger: Implemented a new command to trace the execution of control
525 methods (Trace). This is especially useful for the in-kernel version of
526 the debugger when file I/O may not be available for method trace output.
527 See the ACPICA reference for more information. Lv Zheng.
529 Moved all C library prototypes (used for the local versions of these
530 functions when requested) to a new header, acclib.h
531 Cleaned up the use of non-ANSI C library functions. These functions are
532 implemented locally in ACPICA. Moved all such functions to a common
533 source file, utnonansi.c
535 Debugger: Fixed a problem with the "!!" command (get last command
536 executed) where the debugger could enter an infinite loop and eventually
539 Removed the use of local macros that were used for some of the standard C
540 library functions to automatically cast input parameters. This mostly
541 affected the is* functions where the input parameter is defined to be an
542 int. This required a few modifications to the main ACPICA source code to
543 provide casting for these functions and eliminate possible compiler
544 warnings for these parameters.
546 Across the source code, added additional status/error checking to resolve
547 issues discovered by static source code analysis tools such as Coverity.
549 Example Code and Data Size: These are the sizes for the OS-independent
550 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
551 debug version of the code includes the debug output trace mechanism and
552 has a much larger code and data size.
555 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
556 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
558 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
559 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
562 2) iASL Compiler/Disassembler and Tools:
564 iASL: Fixed a regression where the device map file feature no longer
565 worked properly when used in conjunction with the disassembler. It only
566 worked properly with the compiler itself.
568 iASL: Implemented a new warning for method LocalX variables that are set
569 but never used (similar to a C compiler such as gcc). This also applies
570 to ArgX variables that are not defined by the parent method, and are
571 instead (legally) used as local variables.
573 iASL/Preprocessor: Finished the pass-through of line numbers from the
574 preprocessor to the compiler. This ensures that compiler errors/warnings
575 have the correct original line numbers and filenames, regardless of any
578 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
579 pass-through of comments to the preprocessor output file (which becomes
580 the compiler input file). Also fixed a problem with // comments that
581 appear after a math expression.
583 iASL: Added support for the TCPA server table to the table compiler and
584 template generator. (The client table was already previously supported)
586 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
587 identify the iASL compiler.
589 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
590 multiple times. The new names are ACPI_SIGN_NEGATIVE and
593 AcpiHelp: Update to expand help messages for the iASL preprocessor
597 ----------------------------------------
598 19 June 2015. Summary of changes for version 20150619:
600 Two regressions in version 20150616 have been addressed:
602 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
603 etc.) This update changes ACPICA to only use the standard headers for
604 functions, or the prototypes for the local versions of the C library
605 functions. Across the source code, this required some additional casts
606 for some Clib invocations for portability. Moved all local prototypes to
609 Fixes several problems with recent changes to the handling of the FACS
610 table that could cause some systems not to boot.
613 ----------------------------------------
614 16 June 2015. Summary of changes for version 20150616:
617 1) ACPICA kernel-resident subsystem:
619 Across the entire ACPICA source code base, the various macros for the C
620 library functions (such as ACPI_STRLEN, etc.) have been removed and
621 replaced by the standard C library names (strlen, etc.) The original
622 purpose for these macros is no longer applicable. This simplification
623 reduces the number of macros used in the ACPICA source code
624 significantly, improving readability and maintainability.
626 Implemented support for a new ACPI table, the OSDT. This table, the
627 "override" SDT, can be loaded directly by the host OS at boot time. It
628 enables the replacement of existing namespace objects that were installed
629 via the DSDT and/or SSDTs. The primary purpose for this is to replace
630 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
631 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
634 Added support for systems with (improperly) two FACS tables -- a "32-bit"
635 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
636 X field). This change will support both automatically. There continues to
637 be systems found with this issue. This support requires a change to the
638 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
639 been added to allow the host to select which FACS is desired
640 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
643 Added a new feature to allow for systems that do not contain an FACS.
644 Although this is already supported on hardware-reduced platforms, the
645 feature has been extended for all platforms. The reasoning is that we do
646 not want to abort the entire ACPICA initialization just because the
647 system is seriously buggy and has no FACS.
649 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
650 not correctly transcribed from the ACPI specification in ACPICA version
653 Implemented support for the _CLS object in the AcpiGetObjectInfo external
656 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
657 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
658 compiler also updated. Note: The TCPA "server" table is not supported by
659 the disassembler/table-compiler at this time.
661 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
663 Example Code and Data Size: These are the sizes for the OS-independent
664 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
665 debug version of the code includes the debug output trace mechanism and
666 has a much larger code and data size.
669 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
670 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
672 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
673 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
676 2) iASL Compiler/Disassembler and Tools:
678 Disassembler: Fixed a problem with the new symbolic operator disassembler
679 where incorrect ASL code could be emitted in some cases for the "non-
680 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
681 ShiftRight. The actual problem cases seem to be rather unusual in common
682 ASL code, however. David Box.
684 Modified the linux version of acpidump to obtain ACPI tables from not
685 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
688 iASL: Fixed a problem where the user preprocessor output file (.i)
689 contained extra data that was not expected. The compiler was using this
690 file as a temporary file and passed through #line directives in order to
691 keep compiler error messages in sync with the input file and line number
692 across multiple include files. The (.i) is no longer a temporary file as
693 the compiler uses a new, different file for the original purpose.
695 iASL: Fixed a problem where comments within the original ASL source code
696 file were not passed through to the preprocessor output file, nor any
699 iASL: Fixed some issues for the handling of the "#include" preprocessor
700 directive and the similar (but not the same) "Include" ASL operator.
702 iASL: Add support for the new OSDT in both the disassembler and compiler.
704 iASL: Fixed a problem with the constant folding support where a Buffer
705 object could be incorrectly generated (incorrectly formed) during a
706 conversion to a Store() operator.
708 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
709 description text for the _REV predefined name. _REV now permanently
710 returns 2, as per the ACPI 6.0 specification.
712 Debugger: Enhanced the output of the Debug ASL object for references
713 produced by the Index operator. For Buffers and strings, only output the
714 actual byte pointed to by the index. For packages, only print the single
715 package element decoded by the index. Previously, the entire
716 buffer/string/package was emitted.
718 iASL/Table-compiler: Fixed a regression where the "generic" data types
719 were no longer recognized, causing errors.
722 ----------------------------------------
723 15 May 2015. Summary of changes for version 20150515:
725 This release implements most of ACPI 6.0 as described below.
727 1) ACPICA kernel-resident subsystem:
729 Implemented runtime argument checking and return value checking for all
730 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
731 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
733 Example Code and Data Size: These are the sizes for the OS-independent
734 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
735 debug version of the code includes the debug output trace mechanism and
736 has a much larger code and data size.
739 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
740 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
742 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
743 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
746 2) iASL Compiler/Disassembler and Tools:
748 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
749 names (argument count validation and return value typechecking.)
751 iASL disassembler and table compiler: implemented support for all new
752 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
754 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
757 iASL preprocessor: Added a new directive to enable inclusion of binary
758 blobs into ASL code. The new directive is #includebuffer. It takes a
759 binary file as input and emits a named ascii buffer object into the ASL
762 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
764 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
767 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
771 ----------------------------------------
772 10 April 2015. Summary of changes for version 20150410:
774 Reverted a change introduced in version 20150408 that caused
775 a regression in the disassembler where incorrect operator
776 symbols could be emitted.
779 ----------------------------------------
780 08 April 2015. Summary of changes for version 20150408:
783 1) ACPICA kernel-resident subsystem:
785 Permanently set the return value for the _REV predefined name. It now
786 returns 2 (was 5). This matches other ACPI implementations. _REV will be
787 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
788 for ACPI 2.0 and later. It should never be used to differentiate or
789 identify operating systems.
791 Added the "Windows 2015" string to the _OSI support. ACPICA will now
792 return TRUE to a query with this string.
794 Fixed several issues with the local version of the printf function.
796 Added the C99 compiler option (-std=c99) to the Unix makefiles.
799 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
800 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
802 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
803 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
806 2) iASL Compiler/Disassembler and Tools:
808 iASL: Implemented an enhancement to the constant folding feature to
809 transform the parse tree to a simple Store operation whenever possible:
810 Add (2, 3, X) ==> is converted to: Store (5, X)
811 X = 2 + 3 ==> is converted to: Store (5, X)
813 Updated support for the SLIC table (Software Licensing Description Table)
814 in both the Data Table compiler and the disassembler. The SLIC table
815 support now conforms to "Microsoft Software Licensing Tables (SLIC and
816 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
817 following the ACPI header is now defined to be "Proprietary Data", and as
818 such, can only be entered or displayed as a hex data block.
820 Implemented full support for the MSDM table as described in the document
821 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
822 following the ACPI header is defined to be "Proprietary Data", and can
823 only be entered or displayed as a hex data block.
825 Implemented the -Pn option for the iASL Table Compiler (was only
826 implemented for the ASL compiler). This option disables the iASL
829 Disassembler: For disassembly of Data Tables, added a comment field
830 around the Ascii equivalent data that is emitted as part of the "Raw
831 Table Data" block. This prevents the iASL Preprocessor from possible
832 confusion if/when the table is compiled.
834 Disassembler: Added an option (-df) to force the disassembler to assume
835 that the table being disassembled contains valid AML. This feature is
836 useful for disassembling AML files that contain ACPI signatures other
837 than DSDT or SSDT (such as OEMx or other signatures).
839 Changes for the EFI version of the tools:
840 1) Fixed a build error/issue
841 2) Fixed a cast warning
843 iASL: Fixed a path issue with the __FILE__ operator by making the
844 directory prefix optional within the internal SplitInputFilename
847 Debugger: Removed some unused global variables.
849 Tests: Updated the makefile for proper generation of the AAPITS suite.
852 ----------------------------------------
853 04 February 2015. Summary of changes for version 20150204:
855 ACPICA kernel-resident subsystem:
857 Updated all ACPICA copyrights and signons to 2014. Added the 2014
858 copyright to all module headers and signons, including the standard Linux
859 header. This affects virtually every file in the ACPICA core subsystem,
860 iASL compiler, all ACPICA utilities, and the test suites.
862 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
863 A raw gpe handling mechanism was created to allow better handling of GPE
864 storms that aren't easily managed by the normal handler. The raw handler
865 allows disabling/renabling of the the GPE so that interrupt storms can be
866 avoided in cases where events cannot be timely serviced. In this
867 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
868 GPE. This API will leave the reference counts undisturbed, thereby
869 preventing unintentional clearing of the GPE when the intent in only to
870 temporarily disable it. Raw handlers allow enabling and disabling of a
871 GPE by removing GPE register locking. As such, raw handlers much provide
872 their own locks while using GPE API's to protect access to GPE data
876 Events: Always modify GPE registers under the GPE lock.
877 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
878 values. Reported as bug by joe.liu@apple.com.
880 Unix makefiles: Separate option to disable optimizations and
881 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
882 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
883 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
884 errors when building ACPICA. This allows disabling the option without
885 also having to disable optimazations.
889 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
890 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
893 --------------------------------------
894 07 November 2014. Summary of changes for version 20141107:
896 This release is available at https://acpica.org/downloads
898 This release introduces and implements language extensions to ASL that
899 provide support for symbolic ("C-style") operators and expressions. These
900 language extensions are known collectively as ASL+.
903 1) iASL Compiler/Disassembler and Tools:
905 Disassembler: Fixed a problem with disassembly of the UartSerialBus
906 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
909 Disassembler: Fixed the Unicode macro support to add escape sequences.
910 All non-printable ASCII values are emitted as escape sequences, as well
911 as the standard escapes for quote and backslash. Ensures that the
912 disassembled macro can be correctly recompiled.
914 iASL: Added Printf/Fprintf macros for formatted output. These macros are
915 translated to existing AML Concatenate and Store operations. Printf
916 writes to the ASL Debug object. Fprintf allows the specification of an
917 ASL name as the target. Only a single format specifier is required, %o,
918 since the AML interpreter dynamically converts objects to the required
921 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
922 (Concatenate (Concatenate (Concatenate ("", Arg0),
923 ": Unexpected value for "), Arg1), ", "), Arg2),
924 " at line "), Arg3), Debug)
926 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
927 Arg0, Arg1, Arg2, Arg3)
929 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
930 ("", Arg1), ": "), Arg0), " Successful"), STR1)
932 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
934 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
935 ASL parse tree before the AML code is generated. This allows blocks of
936 ASL code to be removed in order to help locate and identify problem
937 devices and/or code. David E. Box.
939 AcpiExec: Added support (-fi) for an optional namespace object
940 initialization file. This file specifies initial values for namespace
941 objects as necessary for debugging and testing different ASL code paths
942 that may be taken as a result of BIOS options.
945 2) Overview of symbolic operator support for ASL (ASL+)
946 -------------------------------------------------------
948 As an extension to the ASL language, iASL implements support for symbolic
949 (C-style) operators for math and logical expressions. This can greatly
950 simplify ASL code as well as improve both readability and
951 maintainability. These language extensions can exist concurrently with
952 all legacy ASL code and expressions.
954 The symbolic extensions are 100% compatible with existing AML
955 interpreters, since no new AML opcodes are created. To implement the
956 extensions, the iASL compiler transforms the symbolic expressions into
957 the legacy ASL/AML equivalents at compile time.
959 Full symbolic expressions are supported, along with the standard C
960 precedence and associativity rules.
962 Full disassembler support for the symbolic expressions is provided, and
963 creates an automatic migration path for existing ASL code to ASL+ code
964 via the disassembly process. By default, the disassembler now emits ASL+
965 code with symbolic expressions. An option (-dl) is provided to force the
966 disassembler to emit legacy ASL code if desired.
968 Below is the complete list of the currently supported symbolic operators
969 with examples. See the iASL User Guide for additional information.
972 ASL+ Syntax Legacy ASL Equivalent
973 ----------- ---------------------
977 Z = X + Y Add (X, Y, Z)
978 Z = X - Y Subtract (X, Y, Z)
979 Z = X * Y Multiply (X, Y, Z)
980 Z = X / Y Divide (X, Y, , Z)
981 Z = X % Y Mod (X, Y, Z)
982 Z = X << Y ShiftLeft (X, Y, Z)
983 Z = X >> Y ShiftRight (X, Y, Z)
984 Z = X & Y And (X, Y, Z)
985 Z = X | Y Or (X, Y, Z)
986 Z = X ^ Y Xor (X, Y, Z)
993 (X == Y) LEqual (X, Y)
994 (X != Y) LNotEqual (X, Y)
996 (X > Y) LGreater (X, Y)
997 (X <= Y) LLessEqual (X, Y)
998 (X >= Y) LGreaterEqual (X, Y)
1003 // Assignment and compound assignment operations
1006 X += Y Add (X, Y, X)
1007 X -= Y Subtract (X, Y, X)
1008 X *= Y Multiply (X, Y, X)
1009 X /= Y Divide (X, Y, , X)
1010 X %= Y Mod (X, Y, X)
1011 X <<= Y ShiftLeft (X, Y, X)
1012 X >>= Y ShiftRight (X, Y, X)
1013 X &= Y And (X, Y, X)
1015 X ^= Y Xor (X, Y, X)
1022 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1023 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1025 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1027 And (MEMB, 0xFFFFFFF0, SRMB)
1028 Store (MEMB, Local2)
1029 Store (PDBM, Local1)
1030 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1032 Or (PDBM, 0x02, PDBM)
1036 If (((R510 & 0x03FB) == 0x02E0) ||
1037 ((R520 & 0x03FB) == 0x02E0) ||
1038 ((R530 & 0x03FB) == 0x02E0) ||
1039 ((R540 & 0x03FB) == 0x02E0))
1041 SRMB = (MEMB & 0xFFFFFFF0)
1044 PDBM &= 0xFFFFFFFFFFFFFFF9
1050 Store (0x1234, Local1)
1051 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1052 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1053 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1054 Store (Index (PKG1, 0x03), Local6)
1055 Store (Add (Local3, Local2), Debug)
1056 Add (Local1, 0x0F, Local2)
1057 Add (Local1, Multiply (Local2, Local3), Local2)
1058 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1062 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1063 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1064 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1065 Local6 = Index (PKG1, 0x03)
1066 Debug = (Local3 + Local2)
1067 Local2 = (Local1 + 0x0F)
1068 Local2 = (Local1 + (Local2 * Local3))
1069 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1072 ----------------------------------------
1073 26 September 2014. Summary of changes for version 20140926:
1075 1) ACPICA kernel-resident subsystem:
1077 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1078 In order to support GPIO Connection objects with multiple pins, along
1079 with the related Field objects, the following changes to the interface
1080 have been made: The Address is now defined to be the offset in bits of
1081 the field unit from the previous invocation of a Connection. It can be
1082 viewed as a "Pin Number Index" into the connection resource descriptor.
1083 The BitWidth is the exact bit width of the field. It is usually one bit,
1084 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1085 additional information and examples.
1087 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1088 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1089 by the firmware), so that they cannot fire until they are enabled via
1090 AcpiUpdateAllGpes. Rafael J. Wysocki.
1092 Added a new return flag for the Event/GPE status interfaces --
1093 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1094 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1095 GPE currently has a handler associated with it, and can thus actually
1096 affect the system. Lv Zheng.
1098 Example Code and Data Size: These are the sizes for the OS-independent
1099 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1100 debug version of the code includes the debug output trace mechanism and
1101 has a much larger code and data size.
1104 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1105 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1107 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1108 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1110 2) iASL Compiler/Disassembler and Tools:
1112 iASL: Fixed a memory allocation/free regression introduced in 20140828
1113 that could cause the compiler to crash. This was introduced inadvertently
1114 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1117 iASL: Removed two error messages that have been found to create false
1118 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1119 1) Illegal forward reference within a method
1120 2) Illegal reference across two methods
1122 iASL: Implemented a new option (-lm) to create a hardware mapping file
1123 that summarizes all GPIO, I2C, SPI, and UART connections. This option
1124 works for both the compiler and disassembler. See the iASL compiler user
1125 guide for additional information and examples (section 6.4.6).
1127 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
1128 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
1129 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
1131 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
1132 unless STDIN is actually a terminal. Assists with batch-mode processing.
1135 Disassembler/AcpiHelp: Added another large group of recognized _HID
1139 ----------------------------------------
1140 28 August 2014. Summary of changes for version 20140828:
1142 1) ACPICA kernel-resident subsystem:
1144 Fixed a problem related to the internal use of the Timer() operator where
1145 a 64-bit divide could cause an attempted link to a double-precision math
1146 library. This divide is not actually necessary, so the code was
1147 restructured to eliminate it. Lv Zheng.
1149 ACPI 5.1: Added support for the runtime validation of the _DSD package
1150 (similar to the iASL support).
1152 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
1153 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
1155 Example Code and Data Size: These are the sizes for the OS-independent
1156 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1157 debug version of the code includes the debug output trace mechanism and
1158 has a much larger code and data size.
1161 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1162 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1164 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
1165 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1167 2) iASL Compiler/Disassembler and Tools:
1169 AcpiExec: Fixed a problem on unix systems where the original terminal
1170 state was not always properly restored upon exit. Seen when using the -v
1171 option. ACPICA BZ 1104.
1173 iASL: Fixed a problem with the validation of the ranges/length within the
1174 Memory24 resource descriptor. There was a boundary condition when the
1175 range was equal to the (length -1) caused by the fact that these values
1176 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
1178 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
1180 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
1182 now supported properly.
1184 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
1185 in the disassembler, data table compiler, and table template generator.
1187 iASL: Added a requirement for Device() objects that one of either a _HID
1188 or _ADR must exist within the scope of a Device, as per the ACPI
1189 specification. Remove a similar requirement that was incorrectly in place
1190 for the _DSD object.
1192 iASL: Added error detection for illegal named references within control
1193 methods that would cause runtime failures. Now trapped as errors are: 1)
1194 References to objects within a non-parent control method. 2) Forward
1195 references (within a method) -- for control methods, AML interpreters use
1196 a one-pass parse of control methods. ACPICA BZ 1008.
1198 iASL: Added error checking for dependencies related to the _PSx power
1199 methods. ACPICA BZ 1029.
1200 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
1202 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
1205 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
1206 deploying the existing object and string caches and adding new caches for
1209 iASL: Split the huge parser source file into multiple subfiles to improve
1210 manageability. Generation now requires the M4 macro preprocessor, which
1211 is part of the Bison distribution on both unix and windows platforms.
1213 AcpiSrc: Fixed and removed all extraneous warnings generated during
1214 entire ACPICA source code scan and/or conversion.
1217 ----------------------------------------
1219 24 July 2014. Summary of changes for version 20140724:
1221 The ACPI 5.1 specification has been released and is available at:
1222 http://uefi.org/specs/access
1225 0) ACPI 5.1 support in ACPICA:
1227 ACPI 5.1 is fully supported in ACPICA as of this release.
1229 New predefined names. Support includes iASL and runtime ACPICA
1231 _CCA (Cache Coherency Attribute).
1232 _DSD (Device-Specific Data). David Box.
1234 Modifications to existing ACPI tables. Support includes headers, iASL
1235 Data Table compiler, disassembler, and the template generator.
1236 FADT - New fields and flags. Graeme Gregory.
1237 GTDT - One new subtable and new fields. Tomasz Nowicki.
1238 MADT - Two new subtables. Tomasz Nowicki.
1239 PCCT - One new subtable.
1242 New notification type for System Resource Affinity change events.
1245 1) ACPICA kernel-resident subsystem:
1247 Fixed a regression introduced in 20140627 where a fault can happen during
1248 the deletion of Alias AML namespace objects. The problem affected both
1249 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
1251 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
1252 simple mechanism to enable wake GPEs that have no associated handler or
1253 control method. Rafael Wysocki.
1255 Updated the AcpiEnableGpe interface to disallow the enable if there is no
1256 handler or control method associated with the particular GPE. This will
1257 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
1259 Updated GPE handling and dispatch by disabling the GPE before clearing
1260 the status bit for edge-triggered GPEs. Lv Zheng.
1262 Added Timer() support to the AML Debug object. The current timer value is
1263 now displayed with each invocation of (Store to) the debug object to
1264 enable simple generation of execution times for AML code (method
1265 execution for example.) ACPICA BZ 1093.
1267 Example Code and Data Size: These are the sizes for the OS-independent
1268 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1269 debug version of the code includes the debug output trace mechanism and
1270 has a much larger code and data size.
1273 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
1274 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1276 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1277 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1280 2) iASL Compiler/Disassembler and Tools:
1282 Fixed an issue with the recently added local printf implementation,
1283 concerning width/precision specifiers that could cause incorrect output.
1284 Lv Zheng. ACPICA BZ 1094.
1286 Disassembler: Added support to detect buffers that contain UUIDs and
1287 disassemble them to an invocation of the ToUUID operator. Also emit
1288 commented descriptions of known ACPI-related UUIDs.
1290 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
1291 -u. Adds three new files.
1293 iASL: Update table compiler and disassembler for DMAR table changes that
1294 were introduced in September 2013. With assistance by David Woodhouse.
1296 ----------------------------------------
1297 27 June 2014. Summary of changes for version 20140627:
1299 1) ACPICA kernel-resident subsystem:
1301 Formatted Output: Implemented local versions of standard formatted output
1302 utilities such as printf, etc. Over time, it has been discovered that
1303 there are in fact many portability issues with printf, and the addition
1304 of this feature will fix/prevent these issues once and for all. Some
1305 known issues are summarized below:
1307 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
1308 for the Linux kernel and is %uI64 for some MSVC versions.
1309 2) Invoking printf consistently in a manner that is portable across both
1310 32-bit and 64-bit platforms is difficult at best in many situations.
1311 3) The output format for pointers varies from system to system (leading
1312 zeros especially), and leads to inconsistent output from ACPICA across
1314 4) Certain platform-specific printf formats may conflict with ACPICA use.
1315 5) If there is no local C library available, ACPICA now has local support
1318 -- To address these printf issues in a complete manner, ACPICA now
1319 directly implements a small subset of printf format specifiers, only
1320 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
1322 Implemented support for ACPICA generation within the EFI environment.
1323 Initially, the AcpiDump utility is supported in the UEFI shell
1324 environment. Lv Zheng.
1326 Added a new external interface, AcpiLogError, to improve ACPICA
1327 portability. This allows the host to redirect error messages from the
1328 ACPICA utilities. Lv Zheng.
1330 Added and deployed new OSL file I/O interfaces to improve ACPICA
1338 There are C library implementations of these functions in the new file
1339 service_layers/oslibcfs.c -- however, the functions can be implemented by
1340 the local host in any way necessary. Lv Zheng.
1342 Implemented a mechanism to disable/enable ACPI table checksum validation
1343 at runtime. This can be useful when loading tables very early during OS
1344 initialization when it may not be possible to map the entire table in
1345 order to compute the checksum. Lv Zheng.
1347 Fixed a buffer allocation issue for the Generic Serial Bus support.
1348 Originally, a fixed buffer length was used. This change allows for
1349 variable-length buffers based upon the protocol indicated by the field
1350 access attributes. Reported by Lan Tianyu. Lv Zheng.
1352 Fixed a problem where an object detached from a namespace node was not
1353 properly terminated/cleared and could cause a circular list problem if
1354 reattached. ACPICA BZ 1063. David Box.
1356 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
1358 Fixed a possible memory leak in an error return path within the function
1359 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
1361 Example Code and Data Size: These are the sizes for the OS-independent
1362 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1363 debug version of the code includes the debug output trace mechanism and
1364 has a much larger code and data size.
1367 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1368 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1370 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1371 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1374 2) iASL Compiler/Disassembler and Tools:
1376 Disassembler: Add dump of ASCII equivalent text within a comment at the
1377 end of each line of the output for the Buffer() ASL operator.
1379 AcpiDump: Miscellaneous changes:
1380 Fixed repetitive table dump in -n mode.
1381 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
1382 the ACPI 2.0 GUID fails.
1384 iASL: Fixed a problem where the compiler could fault if incorrectly given
1385 an acpidump output file as input. ACPICA BZ 1088. David Box.
1387 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
1388 they are invoked without any arguments.
1390 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
1391 1086. Colin Ian King.
1393 Disassembler: Cleaned up a block of code that extracts a parent Op
1394 object. Added a comment that explains that the parent is guaranteed to be
1395 valid in this case. ACPICA BZ 1069.
1398 ----------------------------------------
1399 24 April 2014. Summary of changes for version 20140424:
1401 1) ACPICA kernel-resident subsystem:
1403 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
1404 Some of these tables are known to contain a trailing NULL entry. Lv
1407 Removed an extraneous error message for the case where there are a large
1408 number of system GPEs (> 124). This was the "32-bit FADT register is too
1409 long to convert to GAS struct" message, which is irrelevant for GPEs
1410 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
1411 (limited capacity) GAS bit length. Also, several changes to ensure proper
1412 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
1415 Implemented and deployed additional configuration support for the public
1416 ACPICA external interfaces. Entire classes of interfaces can now be
1417 easily modified or configured out, replaced by stubbed inline functions
1418 by default. Lv Zheng.
1420 Moved all public ACPICA runtime configuration globals to the public
1421 ACPICA external interface file for convenience. Also, removed some
1422 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
1424 Documentation: Added a new section to the ACPICA reference describing the
1425 maximum number of GPEs that can be supported by the FADT-defined GPEs in
1426 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
1429 Example Code and Data Size: These are the sizes for the OS-independent
1430 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1431 debug version of the code includes the debug output trace mechanism and
1432 has a much larger code and data size.
1435 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1436 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1438 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1439 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1442 2) iASL Compiler/Disassembler and Tools:
1444 iASL and disassembler: Add full support for the LPIT table (Low Power
1445 Idle Table). Includes support in the disassembler, data table compiler,
1446 and template generator.
1449 1) Add option to force the use of the RSDT (over the XSDT).
1450 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
1452 iASL: Add check for predefined packages that are too large. For
1453 predefined names that contain subpackages, check if each subpackage is
1454 too large. (Check for too small already exists.)
1456 Debugger: Updated the GPE command (which simulates a GPE by executing the
1457 GPE code paths in ACPICA). The GPE device is now optional, and defaults
1458 to the GPE 0/1 FADT-defined blocks.
1460 Unix application OSL: Update line-editing support. Add additional error
1461 checking and take care not to reset terminal attributes on exit if they
1462 were never set. This should help guarantee that the terminal is always
1463 left in the previous state on program exit.
1466 ----------------------------------------
1467 25 March 2014. Summary of changes for version 20140325:
1469 1) ACPICA kernel-resident subsystem:
1471 Updated the auto-serialize feature for control methods. This feature
1472 automatically serializes all methods that create named objects in order
1473 to prevent runtime errors. The update adds support to ignore the
1474 currently executing AML SyncLevel when invoking such a method, in order
1475 to prevent disruption of any existing SyncLevel priorities that may exist
1476 in the AML code. Although the use of SyncLevels is relatively rare, this
1477 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
1478 appear on some machines starting with the 20140214 release.
1480 Added a new external interface to allow the host to install ACPI tables
1481 very early, before the namespace is even created. AcpiInstallTable gives
1482 the host additional flexibility for ACPI table management. Tables can be
1483 installed directly by the host as if they had originally appeared in the
1484 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
1485 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
1486 with additional internal restructuring and cleanup. See the ACPICA
1487 Reference for interface details. Lv Zheng.
1489 Added validation of the checksum for all incoming dynamically loaded
1490 tables (via external interfaces or via AML Load/LoadTable operators). Lv
1493 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
1494 and GPE handler removal. Restructured calls to eliminate possible race
1495 conditions. Lv Zheng.
1497 Added a warning for the use/execution of the ASL/AML Unload (table)
1498 operator. This will help detect and identify machines that use this
1499 operator if and when it is ever used. This operator has never been seen
1500 in the field and the usage model and possible side-effects of the drastic
1501 runtime action of a full table removal are unknown.
1503 Reverted the use of #pragma push/pop which was introduced in the 20140214
1504 release. It appears that push and pop are not implemented by enough
1505 compilers to make the use of this feature feasible for ACPICA at this
1506 time. However, these operators may be deployed in a future ACPICA
1509 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
1512 Source code generation:
1513 1) Disabled the use of the "strchr" macro for the gcc-specific
1514 generation. For some versions of gcc, this macro can periodically expose
1515 a compiler bug which in turn causes compile-time error(s).
1516 2) Added support for PPC64 compilation. Colin Ian King.
1518 Example Code and Data Size: These are the sizes for the OS-independent
1519 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1520 debug version of the code includes the debug output trace mechanism and
1521 has a much larger code and data size.
1524 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1525 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1527 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1528 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1531 2) iASL Compiler/Disassembler and Tools:
1533 Disassembler: Added several new features to improve the readability of
1534 the resulting ASL code. Extra information is emitted within comment
1535 fields in the ASL code:
1536 1) Known _HID/_CID values are decoded to descriptive text.
1537 2) Standard values for the Notify() operator are decoded to descriptive
1539 3) Target operands are expanded to full pathnames (in a comment) when
1542 Disassembler: Miscellaneous updates for extern() handling:
1543 1) Abort compiler if file specified by -fe option does not exist.
1544 2) Silence unnecessary warnings about argument count mismatches.
1545 3) Update warning messages concerning unresolved method externals.
1546 4) Emit "UnknownObj" keyword for externals whose type cannot be
1550 1) Added the -a option to display both the ASL syntax and the AML
1551 encoding for an input ASL operator. This effectively displays all known
1552 information about an ASL operator with one AcpiHelp invocation.
1553 2) Added substring match support (similar to a wildcard) for the -i
1554 (_HID/PNP IDs) option.
1556 iASL/Disassembler: Since this tool does not yet support execution on big-
1557 endian machines, added detection of endianness and an error message if
1558 execution is attempted on big-endian. Support for big-endian within iASL
1559 is a feature that is on the ACPICA to-be-done list.
1562 1) Remove option to extract binary files from an acpidump; this function
1563 is made obsolete by the AcpiXtract utility.
1564 2) General cleanup of open files and allocated buffers.
1567 ----------------------------------------
1568 14 February 2014. Summary of changes for version 20140214:
1570 1) ACPICA kernel-resident subsystem:
1572 Implemented a new mechanism to proactively prevent problems with ill-
1573 behaved reentrant control methods that create named ACPI objects. This
1574 behavior is illegal as per the ACPI specification, but is nonetheless
1575 frequently seen in the field. Previously, this could lead to an
1576 AE_ALREADY_EXISTS exception if the method was actually entered by more
1577 than one thread. This new mechanism detects such methods at table load
1578 time and marks them "serialized" to prevent reentrancy. A new global
1579 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
1580 feature if desired. This mechanism and global option obsoletes and
1581 supersedes the previous AcpiGbl_SerializeAllMethods option.
1583 Added the "Windows 2013" string to the _OSI support. ACPICA will now
1584 respond TRUE to _OSI queries with this string. It is the stated policy of
1585 ACPICA to add new strings to the _OSI support as soon as possible after
1586 they are defined. See the full ACPICA _OSI policy which has been added to
1587 the utilities/utosi.c file.
1589 Hardened/updated the _PRT return value auto-repair code:
1590 1) Do not abort the repair on a single subpackage failure, continue to
1591 check all subpackages.
1592 2) Add check for the minimum subpackage length (4).
1593 3) Properly handle extraneous NULL package elements.
1595 Added support to avoid the possibility of infinite loops when traversing
1596 object linked lists. Never allow an infinite loop, even in the face of
1597 corrupted object lists.
1599 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
1600 pack(pop) directives to ensure that the ACPICA headers are independent of
1601 compiler settings or other host headers.
1603 Example Code and Data Size: These are the sizes for the OS-independent
1604 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1605 debug version of the code includes the debug output trace mechanism and
1606 has a much larger code and data size.
1609 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1610 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1612 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1613 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1616 2) iASL Compiler/Disassembler and Tools:
1618 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
1619 first reserved field was incorrectly forced to have a value of zero. This
1620 change correctly forces the field to have a value of one. ACPICA BZ 1081.
1622 Debugger: Added missing support for the "Extra" and "Data" subobjects
1623 when displaying object data.
1625 Debugger: Added support to display entire object linked lists when
1626 displaying object data.
1628 iASL: Removed the obsolete -g option to obtain ACPI tables from the
1629 Windows registry. This feature has been superseded by the acpidump
1633 ----------------------------------------
1634 14 January 2014. Summary of changes for version 20140114:
1636 1) ACPICA kernel-resident subsystem:
1638 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1639 copyright to all module headers and signons, including the standard Linux
1640 header. This affects virtually every file in the ACPICA core subsystem,
1641 iASL compiler, all ACPICA utilities, and the test suites.
1643 Improved parameter validation for AcpiInstallGpeBlock. Added the
1645 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
1646 2) There is not already a GPE block attached to the device.
1647 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
1650 Correctly support "references" in the ACPI_OBJECT. This change fixes the
1651 support to allow references (namespace nodes) to be passed as arguments
1652 to control methods via the evaluate object interface. This is probably
1653 most useful for testing purposes, however.
1655 Improved support for 32/64 bit physical addresses in printf()-like
1656 output. This change improves the support for physical addresses in printf
1657 debug statements and other output on both 32-bit and 64-bit hosts. It
1658 consistently outputs the appropriate number of bytes for each host. The
1659 %p specifier is unsatisfactory since it does not emit uniform output on
1660 all hosts/clib implementations (on some, leading zeros are not supported,
1661 leading to difficult-to-read output).
1663 Example Code and Data Size: These are the sizes for the OS-independent
1664 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1665 debug version of the code includes the debug output trace mechanism and
1666 has a much larger code and data size.
1669 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1670 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1672 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1673 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1676 2) iASL Compiler/Disassembler and Tools:
1678 iASL: Fix a possible fault when using the Connection() operator. Fixes a
1679 problem if the parent Field definition for the Connection operator refers
1680 to an operation region that does not exist. ACPICA BZ 1064.
1682 AcpiExec: Load of local test tables is now optional. The utility has the
1683 capability to load some various tables to test features of ACPICA.
1684 However, there are enough of them that the output of the utility became
1685 confusing. With this change, only the required local tables are displayed
1686 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
1687 line specification. This makes the default output simler and easier to
1688 understand. The -el command line option restores the original behavior
1689 for testing purposes.
1691 AcpiExec: Added support for overlapping operation regions. This change
1692 expands the simulation of operation regions by supporting regions that
1693 overlap within the given address space. Supports SystemMemory and
1694 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
1696 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
1697 allows AcpiExec to simulate these address spaces, similar to the current
1698 support for SystemMemory and SystemIO.
1700 Debugger: Added new command to read/write/compare all namespace objects.
1701 The command "test objects" will exercise the entire namespace by writing
1702 new values to each data object, and ensuring that the write was
1703 successful. The original value is then restored and verified.
1705 Debugger: Added the "test predefined" command. This change makes this
1706 test public and puts it under the new "test" command. The test executes
1707 each and every predefined name within the current namespace.
1710 ----------------------------------------
1711 18 December 2013. Summary of changes for version 20131218:
1713 Global note: The ACPI 5.0A specification was released this month. There
1714 are no changes needed for ACPICA since this release of ACPI is an
1715 errata/clarification release. The specification is available at
1719 1) ACPICA kernel-resident subsystem:
1721 Added validation of the XSDT root table if it is present. Some older
1722 platforms contain an XSDT that is ill-formed or otherwise invalid (such
1723 as containing some or all entries that are NULL pointers). This change
1724 adds a new function to validate the XSDT before actually using it. If the
1725 XSDT is found to be invalid, ACPICA will now automatically fall back to
1726 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
1727 ACPICA and enhanced by Lv Zheng and Bob Moore.
1729 Added a runtime option to ignore the XSDT and force the use of the RSDT.
1730 This change adds a runtime option that will force ACPICA to use the RSDT
1731 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
1732 requires that an XSDT be used instead of the RSDT, the XSDT has been
1733 found to be corrupt or ill-formed on some machines. Lv Zheng.
1735 Added a runtime option to favor 32-bit FADT register addresses over the
1736 64-bit addresses. This change adds an option to favor 32-bit FADT
1737 addresses when there is a conflict between the 32-bit and 64-bit versions
1738 of the same register. The default behavior is to use the 64-bit version
1739 in accordance with the ACPI specification. This can now be overridden via
1740 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
1742 During the change above, the internal "Convert FADT" and "Verify FADT"
1743 functions have been merged to simplify the code, making it easier to
1744 understand and maintain. ACPICA BZ 933.
1746 Improve exception reporting and handling for GPE block installation.
1747 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
1748 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
1750 Added helper macros to extract bus/segment numbers from the HEST table.
1751 This change adds two macros to extract the encoded bus and segment
1752 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
1753 Betty Dall <betty.dall@hp.com>
1755 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
1756 by ACPICA. It is not a public macro, so it should have no effect on
1757 existing OSV code. Lv Zheng.
1759 Example Code and Data Size: These are the sizes for the OS-independent
1760 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1761 debug version of the code includes the debug output trace mechanism and
1762 has a much larger code and data size.
1765 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1766 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1768 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1769 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1772 2) iASL Compiler/Disassembler and Tools:
1774 Disassembler: Improved pathname support for emitted External()
1775 statements. This change adds full pathname support for external names
1776 that have been resolved internally by the inclusion of additional ACPI
1777 tables (via the iASL -e option). Without this change, the disassembler
1778 can emit multiple externals for the same object, or it become confused
1779 when the Scope() operator is used on an external object. Overall, greatly
1780 improves the ability to actually recompile the emitted ASL code when
1781 objects a referenced across multiple ACPI tables. Reported by Michael
1782 Tsirkin (mst@redhat.com).
1784 Tests/ASLTS: Updated functional control suite to execute with no errors.
1785 David Box. Fixed several errors related to the testing of the interpreter
1786 slack mode. Lv Zheng.
1788 iASL: Added support to detect names that are declared within a control
1789 method, but are unused (these are temporary names that are only valid
1790 during the time the method is executing). A remark is issued for these
1791 cases. ACPICA BZ 1022.
1793 iASL: Added full support for the DBG2 table. Adds full disassembler,
1794 table compiler, and template generator support for the DBG2 table (Debug
1797 iASL: Added full support for the PCCT table, update the table definition.
1798 Updates the PCCT table definition in the actbl3.h header and adds table
1799 compiler and template generator support.
1801 iASL: Added an option to emit only error messages (no warnings/remarks).
1802 The -ve option will enable only error messages, warnings and remarks are
1803 suppressed. This can simplify debugging when only the errors are
1804 important, such as when an ACPI table is disassembled and there are many
1805 warnings and remarks -- but only the actual errors are of real interest.
1807 Example ACPICA code (source/tools/examples): Updated the example code so
1808 that it builds to an actual working program, not just example code. Added
1809 ACPI tables and execution of an example control method in the DSDT. Added
1810 makefile support for Unix generation.
1813 ----------------------------------------
1814 15 November 2013. Summary of changes for version 20131115:
1816 This release is available at https://acpica.org/downloads
1819 1) ACPICA kernel-resident subsystem:
1821 Resource Manager: Fixed loop termination for the "get AML length"
1822 function. The loop previously had an error termination on a NULL resource
1823 pointer, which can never happen since the loop simply increments a valid
1824 resource pointer. This fix changes the loop to terminate with an error on
1825 an invalid end-of-buffer condition. The problem can be seen as an
1826 infinite loop by callers to AcpiSetCurrentResources with an invalid or
1827 corrupted resource descriptor, or a resource descriptor that is missing
1828 an END_TAG descriptor. Reported by Dan Carpenter
1829 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
1831 Table unload and ACPICA termination: Delete all attached data objects
1832 during namespace node deletion. This fix updates namespace node deletion
1833 to delete the entire list of attached objects (attached via
1834 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
1835 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
1837 ACPICA termination: Added support to delete all objects attached to the
1838 root namespace node. This fix deletes any and all objects that have been
1839 attached to the root node via AcpiAttachData. Previously, none of these
1840 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
1842 Debug output: Do not emit the function nesting level for the in-kernel
1843 build. The nesting level is really only useful during a single-thread
1844 execution. Therefore, only enable this output for the AcpiExec utility.
1845 Also, only emit the thread ID when executing under AcpiExec (Context
1846 switches are still always detected and a message is emitted). ACPICA BZ
1849 Example Code and Data Size: These are the sizes for the OS-independent
1850 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1851 debug version of the code includes the debug output trace mechanism and
1852 has a much larger code and data size.
1855 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1856 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1858 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1859 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1862 2) iASL Compiler/Disassembler and Tools:
1864 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
1865 correct portable POSIX header for terminal control functions.
1867 Disassembler: Fixed control method invocation issues related to the use
1868 of the CondRefOf() operator. The problem is seen in the disassembly where
1869 control method invocations may not be disassembled properly if the
1870 control method name has been used previously as an argument to CondRefOf.
1871 The solution is to not attempt to emit an external declaration for the
1872 CondRefOf target (it is not necessary in the first place). This prevents
1873 disassembler object type confusion. ACPICA BZ 988.
1875 Unix Makefiles: Added an option to disable compiler optimizations and the
1876 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
1877 with optimizations (reportedly, gcc 4.4 for example). This change adds a
1878 command line option for make (NOOPT) that disables all compiler
1879 optimizations and the _FORTIFY_SOURCE compiler flag. The default
1880 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
1881 1034. Lv Zheng, Bob Moore.
1883 Tests/ASLTS: Added options to specify individual test cases and modes.
1884 This allows testers running aslts.sh to optionally specify individual
1885 test modes and test cases. Also added an option to disable the forced
1886 generation of the ACPICA tools from source if desired. Lv Zheng.
1888 ----------------------------------------
1889 27 September 2013. Summary of changes for version 20130927:
1891 This release is available at https://acpica.org/downloads
1894 1) ACPICA kernel-resident subsystem:
1896 Fixed a problem with store operations to reference objects. This change
1897 fixes a problem where a Store operation to an ArgX object that contained
1899 reference to a field object did not complete the automatic dereference
1901 then write to the actual field object. Instead, the object type of the
1902 field object was inadvertently changed to match the type of the source
1903 operand. The new behavior will actually write to the field object (buffer
1904 field or field unit), thus matching the correct ACPI-defined behavior.
1906 Implemented support to allow the host to redefine individual OSL
1907 prototypes. This change enables the host to redefine OSL prototypes found
1908 in the acpiosxf.h file. This allows the host to implement OSL interfaces
1909 with a macro or inlined function. Further, it allows the host to add any
1910 additional required modifiers such as __iomem, __init, __exit, etc., as
1911 necessary on a per-interface basis. Enables maximum flexibility for the
1912 OSL interfaces. Lv Zheng.
1914 Hardcoded the access width for the FADT-defined reset register. The ACPI
1915 specification requires the reset register width to be 8 bits. ACPICA now
1916 hardcodes the width to 8 and ignores the FADT width value. This provides
1917 compatibility with other ACPI implementations that have allowed BIOS code
1918 with bad register width values to go unnoticed. Matthew Garett, Bob
1922 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
1924 in the OSL header (acpiosxf). The change modifies the position of this
1925 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
1926 build issues if the OSL defines the implementation of the interface to be
1927 an inline stub function. Lv Zheng.
1929 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
1930 initialization interfaces. This change adds a new macro for the main init
1931 and terminate external interfaces in order to support hosts that require
1932 additional or different processing for these functions. Changed from
1933 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
1936 Cleaned up the memory allocation macros for configurability. In the
1938 case, the ACPI_ALLOCATE and related macros now resolve directly to their
1939 respective AcpiOs* OSL interfaces. Two options:
1940 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
1941 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
1942 2) For AcpiExec (and for debugging), the macros can optionally be
1944 to the local ACPICA interfaces that track each allocation (local tracking
1945 is used to immediately detect memory leaks).
1948 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
1949 to predefine this macro to either TRUE or FALSE during the system build.
1951 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
1953 Example Code and Data Size: These are the sizes for the OS-independent
1954 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1955 debug version of the code includes the debug output trace mechanism and
1956 has a much larger code and data size.
1959 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1960 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1962 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1963 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1966 2) iASL Compiler/Disassembler and Tools:
1968 iASL: Implemented wildcard support for the -e option. This simplifies use
1969 when there are many SSDTs that must be included to resolve external
1971 declarations. ACPICA BZ 1041. Example:
1972 iasl -e ssdt*.dat -d dsdt.dat
1974 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
1975 adds a portable module that implements full history and limited line
1976 editing for Unix and Linux systems. It does not use readline() due to
1977 portability issues. Instead it uses the POSIX termio interface to put the
1978 terminal in raw input mode so that the various special keys can be
1980 (such as up/down-arrow for history support and left/right-arrow for line
1981 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
1983 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
1984 one or more spaces. This provides compatible with early or different
1985 versions of the AcpiDump utility. ACPICA BZ 1044.
1987 AcpiDump: Do not ignore tables that contain only an ACPI table header.
1988 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
1989 no other data. This change adds support to dump these tables. Any tables
1990 shorter than the length of an ACPI table header remain in error (an error
1991 message is emitted). Reported by Yi Li.
1993 Debugger: Echo actual command along with the "unknown command" message.
1995 ----------------------------------------
1996 23 August 2013. Summary of changes for version 20130823:
1998 1) ACPICA kernel-resident subsystem:
2000 Implemented support for host-installed System Control Interrupt (SCI)
2001 handlers. Certain ACPI functionality requires the host to handle raw
2002 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2003 state support requires the host device driver to handle SCIs to examine
2004 if the doorbell has been activated. Multiple SCI handlers can be
2005 installed to allow for future expansion. New external interfaces are
2006 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2007 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2009 Operation region support: Never locally free the handler "context"
2010 pointer. This change removes some dangerous code that attempts to free
2011 the handler context pointer in some (rare) circumstances. The owner of
2012 the handler owns this pointer and the ACPICA code should never touch it.
2013 Although not seen to be an issue in any kernel, it did show up as a
2014 problem (fault) under AcpiExec. Also, set the internal storage field for
2015 the context pointer to zero when the region is deactivated, simply for
2016 sanity. David Box. ACPICA BZ 1039.
2018 AcpiRead: On error, do not modify the return value target location. If an
2019 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2020 modify the target of the return value pointer. Makes the code consistent
2021 with the rest of ACPICA. Bjorn Helgaas.
2023 Example Code and Data Size: These are the sizes for the OS-independent
2024 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2025 debug version of the code includes the debug output trace mechanism and
2026 has a much larger code and data size.
2029 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2030 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2032 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2033 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2036 2) iASL Compiler/Disassembler and Tools:
2038 AcpiDump: Implemented several new features and fixed some problems:
2039 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2040 2) Added support for multiple table instances (SSDT, UEFI).
2041 3) Added option to dump "customized" (overridden) tables (-c).
2042 4) Fixed a problem where some table filenames were improperly
2044 5) Improved some error messages, removed some unnecessary messages.
2046 iASL: Implemented additional support for disassembly of ACPI tables that
2047 contain invocations of external control methods. The -fe<file> option
2048 allows the import of a file that specifies the external methods along
2049 with the required number of arguments for each -- allowing for the
2050 correct disassembly of the table. This is a workaround for a limitation
2051 of AML code where the disassembler often cannot determine the number of
2052 arguments required for an external control method and generates incorrect
2053 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2055 Debugger: Implemented a new command (paths) that displays the full
2056 pathnames (namepaths) and object types of all objects in the namespace.
2057 This is an alternative to the namespace command.
2059 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2060 mechanism and any installed handlers.
2062 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2063 This can occur if there are too many parent prefixes in a namepath (for
2064 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2066 Application OSLs: Set the return value for the PCI read functions. These
2067 functions simply return AE_OK, but should set the return value to zero
2068 also. This change implements this. ACPICA BZ 1038.
2070 Debugger: Prevent possible command line buffer overflow. Increase the
2071 size of a couple of the debugger line buffers, and ensure that overflow
2072 cannot happen. ACPICA BZ 1037.
2074 iASL: Changed to abort immediately on serious errors during the parsing
2075 phase. Due to the nature of ASL, there is no point in attempting to
2076 compile these types of errors, and they typically end up causing a
2077 cascade of hundreds of errors which obscure the original problem.
2079 ----------------------------------------
2080 25 July 2013. Summary of changes for version 20130725:
2082 1) ACPICA kernel-resident subsystem:
2084 Fixed a problem with the DerefOf operator where references to FieldUnits
2085 and BufferFields incorrectly returned the parent object, not the actual
2086 value of the object. After this change, a dereference of a FieldUnit
2087 reference results in a read operation on the field to get the value, and
2088 likewise, the appropriate BufferField value is extracted from the target
2091 Fixed a problem where the _WAK method could cause a fault under these
2092 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2093 method returned no value. The problem is rarely seen because most kernels
2094 run ACPICA in slack mode.
2096 For the DerefOf operator, a fatal error now results if an attempt is made
2097 to dereference a reference (created by the Index operator) to a NULL
2098 package element. Provides compatibility with other ACPI implementations,
2099 and this behavior will be added to a future version of the ACPI
2102 The ACPI Power Management Timer (defined in the FADT) is now optional.
2103 This provides compatibility with other ACPI implementations and will
2104 appear in the next version of the ACPI specification. If there is no PM
2105 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2106 zero in the FADT indicates no PM timer.
2108 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2109 allows the host to globally enable/disable all vendor strings, all
2110 feature strings, or both. Intended to be primarily used for debugging
2111 purposes only. Lv Zheng.
2113 Expose the collected _OSI data to the host via a global variable. This
2114 data tracks the highest level vendor ID that has been invoked by the BIOS
2115 so that the host (and potentially ACPICA itself) can change behaviors
2116 based upon the age of the BIOS.
2118 Example Code and Data Size: These are the sizes for the OS-independent
2119 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2120 debug version of the code includes the debug output trace mechanism and
2121 has a much larger code and data size.
2124 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2125 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2127 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2128 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2131 2) iASL Compiler/Disassembler and Tools:
2133 iASL: Created the following enhancements for the -so option (create
2135 1)Add offsets for the last nameseg in each namepath for every supported
2137 2)Add support for Processor, Device, Thermal Zone, and Scope objects
2138 3)Add the actual AML opcode for the parent object of every supported
2140 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
2142 Disassembler: Emit all unresolved external symbols in a single block.
2143 These are external references to control methods that could not be
2144 resolved, and thus, the disassembler had to make a guess at the number of
2147 iASL: The argument to the -T option (create table template) is now
2148 optional. If not specified, the default table is a DSDT, typically the
2151 ----------------------------------------
2152 26 June 2013. Summary of changes for version 20130626:
2154 1) ACPICA kernel-resident subsystem:
2156 Fixed an issue with runtime repair of the _CST object. Null or invalid
2157 elements were not always removed properly. Lv Zheng.
2159 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
2160 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
2161 the maximum number of GPEs is 1016. Use of multiple GPE block devices
2162 makes the system-wide number of GPEs essentially unlimited.
2164 Example Code and Data Size: These are the sizes for the OS-independent
2165 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2166 debug version of the code includes the debug output trace mechanism and
2167 has a much larger code and data size.
2170 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2171 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2173 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2174 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2177 2) iASL Compiler/Disassembler and Tools:
2179 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
2180 hosts. Now supports Linux, FreeBSD, and Windows.
2182 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
2183 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
2185 iASL/Preprocessor: Implemented full support for nested
2186 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
2188 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
2189 max. The original purpose of this constraint was to limit the amount of
2190 debug output. However, the string function in question (UtPrintString) is
2191 now used for the disassembler also, where 256 bytes is insufficient.
2192 Reported by RehabMan@GitHub.
2194 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
2195 tables. ACPICA BZ 999. Lv Zheng.
2197 iASL: Fixed a couple of error exit issues that could result in a "Could
2198 not delete <file>" message during ASL compilation.
2200 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
2201 the actual signatures for these tables are "FACP" and "APIC",
2204 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
2205 tables are allowed to have multiple instances.
2207 ----------------------------------------
2208 17 May 2013. Summary of changes for version 20130517:
2210 1) ACPICA kernel-resident subsystem:
2212 Fixed a regression introduced in version 20130328 for _INI methods. This
2213 change fixes a problem introduced in 20130328 where _INI methods are no
2214 longer executed properly because of a memory block that was not
2215 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
2216 <tomasz.nowicki@linaro.org>.
2218 Fixed a possible problem with the new extended sleep registers in the
2220 5.0 FADT. Do not use these registers (even if populated) unless the HW-
2221 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
2224 Implemented return value repair code for _CST predefined objects: Sort
2226 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
2228 Implemented a debug-only option to disable loading of SSDTs from the
2229 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
2230 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
2231 acglobal.h - ACPICA BZ 1005. Lv Zheng.
2233 Fixed some issues in the ACPICA initialization and termination code:
2234 Tomasz Nowicki <tomasz.nowicki@linaro.org>
2235 1) Clear events initialized flag upon event component termination. ACPICA
2237 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
2238 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
2239 4) Clear debug buffer global on termination to prevent possible multiple
2240 delete. ACPICA BZ 1010.
2242 Standardized all switch() blocks across the entire source base. After
2244 years, different formatting for switch() had crept in. This change makes
2245 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
2247 Split some files to enhance ACPICA modularity and configurability:
2248 1) Split buffer dump routines into utilities/utbuffer.c
2249 2) Split internal error message routines into utilities/uterror.c
2250 3) Split table print utilities into tables/tbprint.c
2251 4) Split iASL command-line option processing into asloptions.c
2253 Makefile enhancements:
2254 1) Support for all new files above.
2255 2) Abort make on errors from any subcomponent. Chao Guan.
2256 3) Add build support for Apple Mac OS X. Liang Qi.
2258 Example Code and Data Size: These are the sizes for the OS-independent
2259 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2260 debug version of the code includes the debug output trace mechanism and
2261 has a much larger code and data size.
2264 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2265 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2267 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2268 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2271 2) iASL Compiler/Disassembler and Tools:
2273 New utility: Implemented an easily portable version of the acpidump
2274 utility to extract ACPI tables from the system (or a file) in an ASCII
2276 dump format. The top-level code implements the various command line
2277 options, file I/O, and table dump routines. To port to a new host, only
2278 three functions need to be implemented to get tables -- since this
2279 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
2280 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
2281 1) The Windows version obtains the ACPI tables from the Registry.
2282 2) The Linux version is under development.
2283 3) Other hosts - If an OS-dependent module is submitted, it will be
2284 distributed with ACPICA.
2286 iASL: Fixed a regression for -D preprocessor option (define symbol). A
2287 restructuring/change to the initialization sequence caused this option to
2288 no longer work properly.
2290 iASL: Implemented a mechanism to disable specific warnings and remarks.
2291 Adds a new command line option, "-vw <messageid> as well as "#pragma
2292 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
2294 iASL: Fix for too-strict package object validation. The package object
2295 validation for return values from the predefined names is a bit too
2296 strict, it does not allow names references within the package (which will
2297 be resolved at runtime.) These types of references cannot be validated at
2298 compile time. This change ignores named references within package objects
2299 for names that return or define static packages.
2301 Debugger: Fixed the 80-character command line limitation for the History
2302 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
2304 iASL: Added control method and package support for the -so option
2305 (generates AML offset table for BIOS support.)
2307 iASL: issue a remark if a non-serialized method creates named objects. If
2308 a thread blocks within the method for any reason, and another thread
2309 enters the method, the method will fail because an attempt will be made
2311 create the same (named) object twice. In this case, issue a remark that
2312 the method should be marked serialized. NOTE: may become a warning later.
2315 ----------------------------------------
2316 18 April 2013. Summary of changes for version 20130418:
2318 1) ACPICA kernel-resident subsystem:
2320 Fixed a possible buffer overrun during some rare but specific field unit
2321 read operations. This overrun can only happen if the DSDT version is 1 --
2322 meaning that all AML integers are 32 bits -- and the field length is
2323 between 33 and 55 bits long. During the read, an internal buffer object
2325 created for the field unit because the field is larger than an integer
2327 bits). However, in this case, the buffer will be incorrectly written
2328 beyond the end because the buffer length is less than the internal
2330 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
2331 long, but a full 8 bytes will be written.
2333 Updated the Embedded Controller "orphan" _REG method support. This refers
2334 to _REG methods under the EC device that have no corresponding operation
2335 region. This is allowed by the ACPI specification. This update removes a
2336 dependency on the existence an ECDT table. It will execute an orphan _REG
2337 method as long as the operation region handler for the EC is installed at
2338 the EC device node and not the namespace root. Rui Zhang (original
2339 update), Bob Moore (update/integrate).
2341 Implemented run-time argument typechecking for all predefined ACPI names
2342 (_STA, _BIF, etc.) This change performs object typechecking on all
2343 incoming arguments for all predefined names executed via
2344 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
2345 passing correct object types as well as the correct number of arguments
2346 (therefore identifying any issues immediately). Also, the ASL/namespace
2347 definition of the predefined name is checked against the ACPI
2348 specification for the proper argument count. Adds one new file,
2351 Changed an exception code for the ASL UnLoad() operator. Changed the
2352 exception code for the case where the input DdbHandle is invalid, from
2353 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
2355 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
2356 global makefile. The use of this flag causes compiler errors on earlier
2357 versions of GCC, so it has been removed for compatibility.
2359 Miscellaneous cleanup:
2360 1) Removed some unused/obsolete macros
2361 2) Fixed a possible memory leak in the _OSI support
2362 3) Removed an unused variable in the predefined name support
2363 4) Windows OSL: remove obsolete reference to a memory list field
2365 Example Code and Data Size: These are the sizes for the OS-independent
2366 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2367 debug version of the code includes the debug output trace mechanism and
2368 has a much larger code and data size.
2371 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2372 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2374 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2375 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2378 2) iASL Compiler/Disassembler and Tools:
2380 AcpiExec: Added installation of a handler for the SystemCMOS address
2381 space. This prevents control method abort if a method accesses this
2384 AcpiExec: Added support for multiple EC devices, and now install EC
2385 operation region handler(s) at the actual EC device instead of the
2386 namespace root. This reflects the typical behavior of host operating
2389 AcpiExec: Updated to ensure that all operation region handlers are
2390 installed before the _REG methods are executed. This prevents a _REG
2391 method from aborting if it accesses an address space has no handler.
2392 AcpiExec installs a handler for every possible address space.
2394 Debugger: Enhanced the "handlers" command to display non-root handlers.
2395 This change enhances the handlers command to display handlers associated
2396 with individual devices throughout the namespace, in addition to the
2397 currently supported display of handlers associated with the root
2401 ASL Test Suite: Several test suite errors have been identified and
2402 resolved, reducing the total error count during execution. Chao Guan.
2404 ----------------------------------------
2405 28 March 2013. Summary of changes for version 20130328:
2407 1) ACPICA kernel-resident subsystem:
2409 Fixed several possible race conditions with the internal object reference
2410 counting mechanism. Some of the external ACPICA interfaces update object
2411 reference counts without holding the interpreter or namespace lock. This
2412 change adds a spinlock to protect reference count updates on the internal
2413 ACPICA objects. Reported by and with assistance from Andriy Gapon
2416 FADT support: Removed an extraneous warning for very large GPE register
2417 sets. This change removes a size mismatch warning if the legacy length
2418 field for a GPE register set is larger than the 64-bit GAS structure can
2419 accommodate. GPE register sets can be larger than the 255-bit width
2420 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
2422 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
2423 return from this interface. Handles a possible timeout case if
2424 ACPI_WAIT_FOREVER is modified by the host to be a value less than
2425 "forever". Jung-uk Kim.
2427 Predefined name support: Add allowed/required argument type information
2429 the master predefined info table. This change adds the infrastructure to
2430 enable typechecking on incoming arguments for all predefined
2431 methods/objects. It does not actually contain the code that will fully
2432 utilize this information, this is still under development. Also condenses
2433 some duplicate code for the predefined names into a new module,
2434 utilities/utpredef.c
2436 Example Code and Data Size: These are the sizes for the OS-independent
2437 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2438 debug version of the code includes the debug output trace mechanism and
2439 has a much larger code and data size.
2442 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2443 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2445 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2446 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2449 2) iASL Compiler/Disassembler and Tools:
2451 iASL: Implemented a new option to simplify the development of ACPI-
2453 BIOS code. Adds support for a new "offset table" output file. The -so
2454 option will create a C table containing the AML table offsets of various
2455 named objects in the namespace so that BIOS code can modify them easily
2457 boot time. This can simplify BIOS runtime code by eliminating expensive
2458 searches for "magic values", enhancing boot times and adding greater
2459 reliability. With assistance from Lee Hamel.
2461 iASL: Allow additional predefined names to return zero-length packages.
2462 Now, all predefined names that are defined by the ACPI specification to
2463 return a "variable-length package of packages" are allowed to return a
2464 zero length top-level package. This allows the BIOS to tell the host that
2465 the requested feature is not supported, and supports existing BIOS/ASL
2468 iASL: Changed the "result not used" warning to an error. This is the case
2469 where an ASL operator is effectively a NOOP because the result of the
2470 operation is not stored anywhere. For example:
2472 There is no target (missing 3rd argument), nor is the function return
2473 value used. This is potentially a very serious problem -- since the code
2474 was probably intended to do something, but for whatever reason, the value
2475 was not stored. Therefore, this issue has been upgraded from a warning to
2478 AcpiHelp: Added allowable/required argument types to the predefined names
2479 info display. This feature utilizes the recent update to the predefined
2480 names table (above).
2482 ----------------------------------------
2483 14 February 2013. Summary of changes for version 20130214:
2485 1) ACPICA Kernel-resident Subsystem:
2487 Fixed a possible regression on some hosts: Reinstated the safe return
2488 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
2489 evaluated only once. Although these macros are not needed for the ACPICA
2490 code itself, they are often used by ACPI-related host device drivers
2492 the safe feature may be necessary.
2494 Fixed several issues related to the ACPI 5.0 reduced hardware support
2495 (SOC): Now ensure that if the platform declares itself as hardware-
2497 via the FADT, the following functions become NOOPs (and always return
2498 AE_OK) because ACPI is always enabled by definition on these machines:
2504 Dynamic Object Repair: Implemented additional runtime repairs for
2505 predefined name return values. Both of these repairs can simplify code in
2506 the related device drivers that invoke these methods:
2507 1) For the _STR and _MLS names, automatically repair/convert an ASCII
2508 string to a Unicode buffer.
2509 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
2511 lone end tag descriptor in the following cases: A Return(0) was executed,
2512 a null buffer was returned, or no object at all was returned (non-slack
2513 mode only). Adds a new file, nsconvert.c
2514 ACPICA BZ 998. Bob Moore, Lv Zheng.
2516 Resource Manager: Added additional code to prevent possible infinite
2518 while traversing corrupted or ill-formed resource template buffers. Check
2519 for zero-length resource descriptors in all code that loops through
2520 resource templates (the length field is used to index through the
2521 template). This change also hardens the external AcpiWalkResources and
2522 AcpiWalkResourceBuffer interfaces.
2524 Local Cache Manager: Enhanced the main data structure to eliminate an
2525 unnecessary mechanism to access the next object in the list. Actually
2526 provides a small performance enhancement for hosts that use the local
2527 ACPICA cache manager. Jung-uk Kim.
2529 Example Code and Data Size: These are the sizes for the OS-independent
2530 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2531 debug version of the code includes the debug output trace mechanism and
2532 has a much larger code and data size.
2535 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2536 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2538 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2539 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2542 2) iASL Compiler/Disassembler and Tools:
2544 iASL/Disassembler: Fixed several issues with the definition of the ACPI
2545 5.0 RASF table (RAS Feature Table). This change incorporates late changes
2546 that were made to the ACPI 5.0 specification.
2548 iASL/Disassembler: Added full support for the following new ACPI tables:
2549 1) The MTMR table (MID Timer Table)
2550 2) The VRTC table (Virtual Real Time Clock Table).
2551 Includes header file, disassembler, table compiler, and template support
2554 iASL: Implemented compile-time validation of package objects returned by
2555 predefined names. This new feature validates static package objects
2556 returned by the various predefined names defined to return packages. Both
2557 object types and package lengths are validated, for both parent packages
2558 and sub-packages, if any. The code is similar in structure and behavior
2560 the runtime repair mechanism within the AML interpreter and uses the
2561 existing predefined name information table. Adds a new file, aslprepkg.c.
2564 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
2565 This feature detects a binary file with a valid ACPI table header and
2566 invokes the disassembler automatically. Eliminates the need to
2567 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
2569 iASL/Disassembler: Added several warnings for the case where there are
2570 unresolved control methods during the disassembly. This can potentially
2571 cause errors when the output file is compiled, because the disassembler
2572 assumes zero method arguments in these cases (it cannot determine the
2573 actual number of arguments without resolution/definition of the method).
2575 Debugger: Added support to display all resources with a single command.
2576 Invocation of the resources command with no arguments will now display
2578 resources within the current namespace.
2580 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
2583 ----------------------------------------
2584 17 January 2013. Summary of changes for version 20130117:
2586 1) ACPICA Kernel-resident Subsystem:
2588 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
2589 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
2590 objects to return a package containing one integer, most BIOS code
2592 two integers and the previous code reflects that. However, we also need
2594 support BIOS code that actually implements to the ACPI spec, and this
2595 change reflects this.
2597 Fixed two issues with the ACPI_DEBUG_PRINT macros:
2598 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
2599 C compilers that require this support.
2600 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
2601 ACPI_DEBUG is already used by many of the various hosts.
2603 Updated all ACPICA copyrights and signons to 2013. Added the 2013
2604 copyright to all module headers and signons, including the standard Linux
2605 header. This affects virtually every file in the ACPICA core subsystem,
2606 iASL compiler, all ACPICA utilities, and the test suites.
2608 Example Code and Data Size: These are the sizes for the OS-independent
2609 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2610 debug version of the code includes the debug output trace mechanism and
2611 has a much larger code and data size.
2614 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2615 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2617 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2618 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2621 2) iASL Compiler/Disassembler and Tools:
2623 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
2624 prevent a possible fault on some hosts. Some C libraries modify the arg
2625 pointer parameter to vfprintf making it difficult to call it twice in the
2626 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
2627 does not affect the Windows OSL since the Win C library does not modify
2628 the arg pointer. Chao Guan, Bob Moore.
2630 iASL: Fixed a possible infinite loop when the maximum error count is
2631 reached. If an output file other than the .AML file is specified (such as
2632 a listing file), and the maximum number of errors is reached, do not
2633 attempt to flush data to the output file(s) as the compiler is aborting.
2634 This can cause an infinite loop as the max error count code essentially
2635 keeps calling itself.
2637 iASL/Disassembler: Added an option (-in) to ignore NOOP
2639 Implemented for both the compiler and the disassembler. Often, the NOOP
2640 opcode is used as padding for packages that are changed dynamically by
2642 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
2643 errors. This option causes the disassembler to ignore all NOOP opcodes
2644 (0xA3), and it also causes the compiler to ignore all ASL source code
2648 Debugger: Enhanced the Sleep command to execute all sleep states. This
2649 change allows Sleep to be invoked with no arguments and causes the
2650 debugger to execute all of the sleep states, 0-5, automatically.
2652 ----------------------------------------
2653 20 December 2012. Summary of changes for version 20121220:
2655 1) ACPICA Kernel-resident Subsystem:
2657 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
2658 alternate entry point for AcpiWalkResources and improves the usability of
2659 the resource manager by accepting as input a buffer containing the output
2660 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
2661 input buffer is not deleted by this interface so that it can be used by
2662 the host later. See the ACPICA reference for details.
2664 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
2665 (DSDT version < 2). The constant will be truncated and this warning
2666 reflects that behavior.
2668 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
2669 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
2670 both get and set the new wake bit in these descriptors, separately from
2671 the existing share bit. Reported by Aaron Lu.
2673 Interpreter: Fix Store() when an implicit conversion is not possible. For
2674 example, in the cases such as a store of a string to an existing package
2675 object, implement the store as a CopyObject(). This is a small departure
2676 from the ACPI specification which states that the control method should
2678 aborted in this case. However, the ASLTS suite depends on this behavior.
2680 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
2681 macros: check if debug output is currently enabled as soon as possible to
2682 minimize performance impact if debug is in fact not enabled.
2684 Source code restructuring: Cleanup to improve modularity. The following
2685 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
2686 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
2687 Associated makefiles and project files have been updated.
2689 Changed an exception code for LoadTable operator. For the case where one
2690 of the input strings is too long, change the returned exception code from
2691 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
2693 Fixed a possible memory leak in dispatcher error path. On error, delete
2694 the mutex object created during method mutex creation. Reported by
2695 tim.gardner@canonical.com.
2697 Example Code and Data Size: These are the sizes for the OS-independent
2698 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2699 debug version of the code includes the debug output trace mechanism and
2700 has a much larger code and data size.
2703 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2704 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2706 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2707 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2710 2) iASL Compiler/Disassembler and Tools:
2712 iASL: Disallow a method call as argument to the ObjectType ASL operator.
2713 This change tracks an errata to the ACPI 5.0 document. The AML grammar
2714 will not allow the interpreter to differentiate between a method and a
2715 method invocation when these are used as an argument to the ObjectType
2716 operator. The ACPI specification change is to disallow a method
2718 (UserTerm) for the ObjectType operator.
2720 Finish support for the TPM2 and CSRT tables in the headers, table
2721 compiler, and disassembler.
2723 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
2724 always expires immediately if the semaphore is not available. The
2726 code was using a relative-time timeout, but sem_timedwait requires the
2728 of an absolute time.
2730 iASL: Added a remark if the Timer() operator is used within a 32-bit
2731 table. This operator returns a 64-bit time value that will be truncated
2732 within a 32-bit table.
2734 iASL Source code restructuring: Cleanup to improve modularity. The
2735 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
2736 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
2740 ----------------------------------------
2741 14 November 2012. Summary of changes for version 20121114:
2743 1) ACPICA Kernel-resident Subsystem:
2745 Implemented a performance enhancement for ACPI/AML Package objects. This
2746 change greatly increases the performance of Package objects within the
2747 interpreter. It changes the processing of reference counts for packages
2749 optimizing for the most common case where the package sub-objects are
2750 either Integers, Strings, or Buffers. Increases the overall performance
2752 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
2754 Chao Guan. ACPICA BZ 943.
2756 Implemented and deployed common macros to extract flag bits from resource
2757 descriptors. Improves readability and maintainability of the code. Fixes
2759 problem with the UART serial bus descriptor for the number of data bits
2760 flags (was incorrectly 2 bits, should be 3).
2762 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
2763 of the macros and changed the SETx macros to the style of (destination,
2764 source). Also added ACPI_CASTx companion macros. Lv Zheng.
2766 Example Code and Data Size: These are the sizes for the OS-independent
2767 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2768 debug version of the code includes the debug output trace mechanism and
2769 has a much larger code and data size.
2772 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2773 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2775 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2776 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2779 2) iASL Compiler/Disassembler and Tools:
2781 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
2782 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
2783 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
2785 Disassembler: Fixed a problem with external declaration generation. Fixes
2786 a problem where an incorrect pathname could be generated for an external
2787 declaration if the original reference to the object includes leading
2788 carats (^). ACPICA BZ 984.
2790 Debugger: Completed a major update for the Disassemble<method> command.
2791 This command was out-of-date and did not properly disassemble control
2792 methods that had any reasonable complexity. This fix brings the command
2794 to the same level as the rest of the disassembler. Adds one new file,
2795 dmdeferred.c, which is existing code that is now common with the main
2796 disassembler and the debugger disassemble command. ACPICA MZ 978.
2798 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
2799 Newer versions of Bison emit this prototype, so moved the prototype out
2801 the iASL header to where it is actually used in order to avoid a
2805 iASL/Tools: Standardized use of the stream I/O functions:
2806 1) Ensure check for I/O error after every fopen/fread/fwrite
2807 2) Ensure proper order of size/count arguments for fread/fwrite
2808 3) Use test of (Actual != Requested) after all fwrite, and most fread
2809 4) Standardize I/O error messages
2810 Improves reliability and maintainability of the code. Bob Moore, Lv
2814 Disassembler: Prevent duplicate External() statements. During generation
2815 of external statements, detect similar pathnames that are actually
2816 duplicates such as these:
2819 Remove all leading '\' characters from pathnames during the external
2820 statement generation so that duplicates will be detected and tossed.
2823 Tools: Replace low-level I/O with stream I/O functions. Replace
2824 open/read/write/close with the stream I/O equivalents
2825 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
2828 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
2829 name header so that AcpiXtract recognizes the output file/table.
2831 iASL: Remove obsolete -2 option flag. Originally intended to force the
2832 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
2833 and the entire concept is now obsolete.
2835 ----------------------------------------
2836 18 October 2012. Summary of changes for version 20121018:
2839 1) ACPICA Kernel-resident Subsystem:
2841 Updated support for the ACPI 5.0 MPST table. Fixes some problems
2842 introduced by late changes to the table as it was added to the ACPI 5.0
2843 specification. Includes header, disassembler, and data table compiler
2844 support as well as a new version of the MPST template.
2846 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
2847 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
2848 methods: _HID, _CID, and _UID.
2850 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
2851 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
2852 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
2853 names for their various drivers. Affects the AcpiGetObjectInfo external
2854 interface, and other internal interfaces as well.
2856 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
2857 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
2858 on machines that support non-aligned transfers. Optimizes for this case
2859 rather than using a strncpy. With assistance from Zheng Lv.
2861 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
2862 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
2864 Added a new debug print message for AML mutex objects that are force-
2865 released. At control method termination, any currently acquired mutex
2866 objects are force-released. Adds a new debug-only message for each one
2869 Audited/updated all ACPICA return macros and the function debug depth
2870 counter: 1) Ensure that all functions that use the various TRACE macros
2871 also use the appropriate ACPICA return macros. 2) Ensure that all normal
2872 return statements surround the return expression (value) with parens to
2873 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
2874 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
2876 Global source code changes/maintenance: All extra lines at the start and
2877 end of each source file have been removed for consistency. Also, within
2878 comments, all new sentences start with a single space instead of a double
2879 space, again for consistency across the code base.
2881 Example Code and Data Size: These are the sizes for the OS-independent
2882 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2883 debug version of the code includes the debug output trace mechanism and
2884 has a much larger code and data size.
2887 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2888 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2890 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2891 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2894 2) iASL Compiler/Disassembler and Tools:
2896 AcpiExec: Improved the algorithm used for memory leak/corruption
2897 detection. Added some intelligence to the code that maintains the global
2898 list of allocated memory. The list is now ordered by allocated memory
2899 address, significantly improving performance. When running AcpiExec on
2900 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
2901 on the platform and/or the environment. Note, this performance
2902 enhancement affects the AcpiExec utility only, not the kernel-resident
2905 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
2906 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
2907 incorrect table offset reported for invalid opcodes. Report the original
2908 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
2910 Disassembler: Enhanced the -vt option to emit the binary table data in
2911 hex format to assist with debugging.
2913 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
2914 size of file structure. Colin Ian King.
2916 ----------------------------------------
2917 13 September 2012. Summary of changes for version 20120913:
2920 1) ACPICA Kernel-resident Subsystem:
2922 ACPI 5.0: Added two new notify types for the Hardware Error Notification
2923 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
2927 Table Manager: Merged/removed duplicate code in the root table resize
2928 functions. One function is external, the other is internal. Lv Zheng,
2932 Makefiles: Completely removed the obsolete "Linux" makefiles under
2933 acpica/generate/linux. These makefiles are obsolete and have been
2936 the generic unix makefiles under acpica/generate/unix.
2938 Makefiles: Ensure that binary files always copied properly. Minor rule
2940 to ensure that the final binary output files are always copied up to the
2941 appropriate binary directory (bin32 or bin64.)
2943 Example Code and Data Size: These are the sizes for the OS-independent
2944 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2946 version of the code includes the debug output trace mechanism and has a
2948 larger code and data size.
2951 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2952 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2954 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2955 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2958 2) iASL Compiler/Disassembler and Tools:
2960 Disassembler: Fixed a possible fault during the disassembly of resource
2961 descriptors when a second parse is required because of the invocation of
2962 external control methods within the table. With assistance from
2963 adq@lidskialf.net. ACPICA BZ 976.
2965 iASL: Fixed a namepath optimization problem. An error can occur if the
2967 node that contains the namepath to be optimized does not have a parent
2969 that is a named object. This change fixes the problem.
2971 iASL: Fixed a regression where the AML file is not deleted on errors. The
2973 output file should be deleted if there are any errors during the
2976 only exception is if the -f (force output) option is used. ACPICA BZ 974.
2978 iASL: Added a feature to automatically increase internal line buffer
2980 Via realloc(), automatically increase the internal line buffer sizes as
2981 necessary to support very long source code lines. The current version of
2983 preprocessor requires a buffer long enough to contain full source code
2985 This change increases the line buffer(s) if the input lines go beyond the
2986 current buffer size. This eliminates errors that occurred when a source
2988 line was longer than the buffer.
2990 iASL: Fixed a problem with constant folding in method declarations. The
2991 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
2993 Type3 opcode was used.
2995 Debugger: Improved command help support. For incorrect argument count,
2997 full help for the command. For help command itself, allow an argument to
3000 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3001 errors during execution of the suite. Guan Chao.
3003 ----------------------------------------
3004 16 August 2012. Summary of changes for version 20120816:
3007 1) ACPICA Kernel-resident Subsystem:
3009 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3011 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3012 deprecated and will probably be removed from the ACPI specification.
3014 does not invoke them, and reportedly never will. The final nail in the
3016 is that the ACPI specification states that these methods must be run with
3017 interrupts off, which is not going to happen in a kernel interpreter.
3019 Linux has removed all use of the methods also. It was discovered that
3020 invoking these functions caused failures on some machines, probably
3022 they were never tested since Windows does not call them. Affects two
3024 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3027 Implemented support for complex bit-packed buffers returned from the _PLD
3028 (Physical Location of Device) predefined method. Adds a new external
3029 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3031 structure. Note: C Bitfields cannot be used for this type of predefined
3032 structure since the memory layout of individual bitfields is not defined
3034 the C language. In addition, there are endian concerns where a compiler
3036 change the bitfield ordering based on the machine type. The new ACPICA
3037 interface eliminates these issues, and should be called after _PLD is
3038 executed. ACPICA BZ 954.
3040 Implemented a change to allow a scope change to root (via "Scope (\)")
3042 execution of module-level ASL code (code that is executed at table load
3045 Added the Windows8/Server2012 string for the _OSI method. This change
3048 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3051 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3053 and CSRT (Core System Resource Table).
3055 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3056 names. This simplifies access to the buffers returned by these predefined
3057 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3059 GPE support: Removed an extraneous parameter from the various low-level
3060 internal GPE functions. Tang Feng.
3062 Removed the linux makefiles from the unix packages. The generate/linux
3063 makefiles are obsolete and have been removed from the unix tarball
3065 packages. The replacement makefiles are under generate/unix, and there is
3067 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3069 Updates for Unix makefiles:
3070 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3071 2) Update linker flags (move to end of command line) for AcpiExec
3075 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3076 utxface.c to improve modularity and reduce file size.
3078 Example Code and Data Size: These are the sizes for the OS-independent
3079 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3080 debug version of the code includes the debug output trace mechanism and
3082 much larger code and data size.
3085 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3086 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3088 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3089 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3092 2) iASL Compiler/Disassembler and Tools:
3094 iASL: Fixed a problem with constant folding for fixed-length constant
3095 expressions. The constant-folding code was not being invoked for constant
3096 expressions that allow the use of type 3/4/5 opcodes to generate
3098 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3100 in the generation of invalid AML bytecode. ACPICA BZ 970.
3102 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3103 apparently automatically emit some of the necessary externals. This
3105 handles these versions in order to eliminate generation warnings.
3107 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3109 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3111 within comments in the output file.
3113 Debugger: Fixed a regression with the "Threads" command where
3114 AE_BAD_PARAMETER was always returned.
3116 ----------------------------------------
3117 11 July 2012. Summary of changes for version 20120711:
3119 1) ACPICA Kernel-resident Subsystem:
3121 Fixed a possible fault in the return package object repair code. Fixes a
3122 problem that can occur when a lone package object is wrapped with an
3124 package object in order to force conformance to the ACPI specification.
3126 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
3130 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
3131 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
3132 ARB_DIS bit must be implemented in the host-dependent C3 processor power
3134 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
3136 Intel and other vendors. (for Intel: ICH4-M and earlier)
3138 This change removes the code to disable/enable bus master arbitration
3140 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
3142 resume problems on some machines. The change has been in use for over
3146 Implemented two new external interfaces to support host-directed dynamic
3148 table load and unload. They are intended to simplify the host
3150 of hot-plug support:
3151 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
3152 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
3154 See the ACPICA reference for additional details. Adds one new file,
3155 components/tables/tbxfload.c
3157 Implemented and deployed two new interfaces for errors and warnings that
3159 known to be caused by BIOS/firmware issues:
3160 AcpiBiosError: Prints "ACPI Firmware Error" message.
3161 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
3162 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
3164 and FADT errors. Additional deployment to be completed as appropriate in
3166 future. The associated conditional macros are ACPI_BIOS_ERROR and
3167 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
3172 Implicit notify support: ensure that no memory allocation occurs within a
3173 critical region. This fix moves a memory allocation outside of the time
3175 spinlock is held. Fixes issues on systems that do not allow this
3179 Split exception code utilities and tables into a new file,
3182 Example Code and Data Size: These are the sizes for the OS-independent
3183 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3185 version of the code includes the debug output trace mechanism and has a
3187 larger code and data size.
3190 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3191 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3193 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3194 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3197 2) iASL Compiler/Disassembler and Tools:
3199 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
3203 Debugger: Enhanced the "tables" command to emit additional information
3205 the current set of ACPI tables, including the owner ID and flags decode.
3207 Debugger: Reimplemented the "unload" command to use the new
3208 AcpiUnloadParentTable external interface. This command was disable
3210 due to need for an unload interface.
3212 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
3214 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
3216 ----------------------------------------
3217 20 June 2012. Summary of changes for version 20120620:
3220 1) ACPICA Kernel-resident Subsystem:
3222 Implemented support to expand the "implicit notify" feature to allow
3224 devices to be notified by a single GPE. This feature automatically
3226 runtime device notification in the absence of a BIOS-provided GPE control
3227 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
3229 provided by ACPICA for Windows compatibility, and is a workaround for
3232 code errors. See the description of the AcpiSetupGpeForWake interface in
3234 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
3236 Changed some comments and internal function names to simplify and ensure
3237 correctness of the Linux code translation. No functional changes.
3239 Example Code and Data Size: These are the sizes for the OS-independent
3240 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3242 version of the code includes the debug output trace mechanism and has a
3244 larger code and data size.
3247 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3248 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3250 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3251 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3254 2) iASL Compiler/Disassembler and Tools:
3256 Disassembler: Added support to emit short, commented descriptions for the
3258 predefined names in order to improve the readability of the disassembled
3259 output. ACPICA BZ 959. Changes include:
3260 1) Emit descriptions for all standard predefined names (_INI, _STA,
3263 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
3264 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
3267 AcpiSrc: Fixed several long-standing Linux code translation issues.
3269 descriptions in function headers are now translated properly to lower
3272 underscores. ACPICA BZ 961. Also fixes translation problems such as
3278 local_fADT -> local_FADT
3279 execute_oSI -> execute_OSI
3281 iASL: Fixed a problem where null bytes were inadvertently emitted into
3285 iASL: Added the existing debug options to the standard help screen. There
3287 no longer two different help screens. ACPICA BZ 957.
3289 AcpiHelp: Fixed some typos in the various predefined name descriptions.
3291 expand some of the descriptions where appropriate.
3293 iASL: Fixed the -ot option (display compile times/statistics). Was not
3295 properly for standard output; only worked for the debug file case.
3297 ----------------------------------------
3298 18 May 2012. Summary of changes for version 20120518:
3301 1) ACPICA Core Subsystem:
3303 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
3305 to block until asynchronous events such as notifies and GPEs have
3307 Within ACPICA, it is only called before a notify or GPE handler is
3308 removed/uninstalled. It also may be useful for the host OS within related
3309 drivers such as the Embedded Controller driver. See the ACPICA reference
3311 additional information. ACPICA BZ 868.
3313 ACPI Tables: Added a new error message for a possible overflow failure
3315 the conversion of FADT 32-bit legacy register addresses to internal
3318 bit GAS structure representation. The GAS has a one-byte "bit length"
3320 thus limiting the register length to 255 bits. ACPICA BZ 953.
3322 Example Code and Data Size: These are the sizes for the OS-independent
3323 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3325 version of the code includes the debug output trace mechanism and has a
3327 larger code and data size.
3330 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3331 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3333 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3334 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3337 2) iASL Compiler/Disassembler and Tools:
3339 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
3341 This keyword was added late in the ACPI 5.0 release cycle and was not
3342 implemented until now.
3344 Disassembler: Added support for Operation Region externals. Adds missing
3345 support for operation regions that are defined in another table, and
3346 referenced locally via a Field or BankField ASL operator. Now generates
3348 correct External statement.
3350 Disassembler: Several additional fixes for the External() statement
3352 related to some ASL operators. Also, order the External() statements
3353 alphabetically in the disassembler output. Fixes the External()
3356 the Create* field, Alias, and Scope operators:
3357 1) Create* buffer field operators - fix type mismatch warning on
3359 2) Alias - implement missing External support
3360 3) Scope - fix to make sure all necessary externals are emitted.
3362 iASL: Improved pathname support. For include files, merge the prefix
3364 with the file pathname and eliminate unnecessary components. Convert
3365 backslashes in all pathnames to forward slashes, for readability. Include
3367 pathname changes affect both #include and Include() type operators.
3369 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
3371 of a valid line by inserting a newline and then returning the EOF during
3373 next call to GetNextLine. Prevents the line from being ignored due to EOF
3376 iASL: Implemented some changes to enhance the IDE support (-vi option.)
3378 and Warning messages are now correctly recognized for both the source
3380 browser and the global error and warning counts.
3382 ----------------------------------------
3383 20 April 2012. Summary of changes for version 20120420:
3386 1) ACPICA Core Subsystem:
3388 Implemented support for multiple notify handlers. This change adds
3391 allow multiple system and device notify handlers on Device, Thermal Zone,
3393 Processor objects. This can simplify the host OS notification
3395 Also re-worked and restructured the entire notify support code to
3397 handler installation, handler removal, notify event queuing, and notify
3398 dispatch to handler(s). Note: there can still only be two global notify
3399 handlers - one for system notifies and one for device notifies. There are
3401 changes to the existing handler install/remove interfaces. Lin Ming, Bob
3402 Moore, Rafael Wysocki.
3404 Fixed a regression in the package repair code where the object reference
3405 count was calculated incorrectly. Regression was introduced in the commit
3406 "Support to add Package wrappers".
3408 Fixed a couple possible memory leaks in the AML parser, in the error
3410 path. Jesper Juhl, Lin Ming.
3412 Example Code and Data Size: These are the sizes for the OS-independent
3413 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3414 debug version of the code includes the debug output trace mechanism and
3416 much larger code and data size.
3419 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3420 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3422 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3423 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3426 2) iASL Compiler/Disassembler and Tools:
3428 iASL: Fixed a problem with the resource descriptor support where the
3430 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
3431 included in cumulative descriptor offset, resulting in incorrect values
3433 resource tags within resource descriptors appearing after a
3435 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
3437 iASL and Preprocessor: Implemented full support for the #line directive
3439 correctly track original source file line numbers through the .i
3441 output file - for error and warning messages.
3443 iASL: Expand the allowable byte constants for address space IDs.
3445 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
3446 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
3448 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
3450 iASL: Add option to completely disable the preprocessor (-Pn).
3452 iASL: Now emit all error/warning messages to standard error (stderr) by
3453 default (instead of the previous stdout).
3455 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
3457 for resource descriptor offset fix above. Update/cleanup error output
3458 routines. Enable and send iASL errors/warnings to an error logfile
3459 (error.txt). Send all other iASL output to a logfile (compiler.txt).
3461 several extraneous "unrecognized operator" messages.
3463 ----------------------------------------
3464 20 March 2012. Summary of changes for version 20120320:
3467 1) ACPICA Core Subsystem:
3469 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
3470 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
3472 does not execute these methods, and therefore these methods are often
3473 untested. It has been seen on some systems where the execution of these
3474 methods causes errors and also prevents the machine from entering S5. It
3476 therefore suggested that host operating systems do not execute these
3478 by default. In the future, perhaps these methods can be optionally
3480 based on the age of the system and/or what is the newest version of
3482 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
3484 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
3487 Fixed a problem where the length of the local/common FADT was set too
3489 The local FADT table length cannot be set to the common length until the
3490 original length has been examined. There is code that checks the table
3492 and sets various fields appropriately. This can affect older machines
3494 early FADT versions. For example, this can cause inadvertent writes to
3496 CST_CNT register. Julian Anastasov.
3498 Fixed a mapping issue related to a physical table override. Use the
3500 mapping mechanism for tables loaded via the physical override OSL
3502 This allows for early mapping before the virtual memory manager is
3504 Thomas Renninger, Bob Moore.
3506 Enhanced the automatic return-object repair code: Repair a common problem
3508 predefined methods that are defined to return a variable-length Package
3510 sub-objects. If there is only one sub-object, some BIOS ASL code
3512 simply returns the single object instead of a Package with one sub-
3514 This new support will repair this error by wrapping a Package object
3516 the original object, creating the correct and expected Package with one
3518 object. Names that can be repaired in this manner include: _ALR, _CSD,
3520 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
3523 Changed the exception code returned for invalid ACPI paths passed as
3524 parameters to external interfaces such as AcpiEvaluateObject. Was
3525 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
3527 Example Code and Data Size: These are the sizes for the OS-independent
3528 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3530 version of the code includes the debug output trace mechanism and has a
3532 larger code and data size.
3535 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3536 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3538 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3539 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3542 2) iASL Compiler/Disassembler and Tools:
3544 iASL: Added the infrastructure and initial implementation of a integrated
3546 like preprocessor. This will simplify BIOS development process by
3548 the need for a separate preprocessing step during builds. On Windows, it
3550 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
3551 features including full #define() macro support are still under
3553 These preprocessor directives are supported:
3566 In addition, these new command line options are supported:
3567 -D <symbol> Define symbol for preprocessor use
3568 -li Create preprocessed output file (*.i)
3569 -P Preprocess only and create preprocessor output file (*.i)
3571 Table Compiler: Fixed a problem where the equals operator within an
3573 did not work properly.
3575 Updated iASL to use the current versions of Bison/Flex. Updated the
3577 project file to invoke these tools from the standard location. ACPICA BZ
3580 Flex for Windows: V2.5.4
3581 Bison for Windows: V2.4.1
3583 ----------------------------------------
3584 15 February 2012. Summary of changes for version 20120215:
3587 1) ACPICA Core Subsystem:
3589 There have been some major changes to the sleep/wake support code, as
3590 described below (a - e).
3592 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
3593 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
3594 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
3596 time the _BFS method is called and the _WAK method is called. NOTE: all
3598 must update their wake/resume code or else sleep/wake will not work
3602 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
3604 method. Some machines require that the GPEs are enabled before the _WAK
3606 is executed. Thomas Renninger.
3608 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
3610 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
3612 determine whether the system is rebooting or resuming. Matthew Garrett.
3614 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
3616 match the ACPI specification requirement. Rafael Wysocki.
3618 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
3619 registers within the V5 FADT. This support adds two new files:
3620 hardware/hwesleep.c implements the support for the new registers. Moved
3622 sleep/wake external interfaces to hardware/hwxfsleep.c.
3625 Added a new OSL interface for ACPI table overrides,
3626 AcpiOsPhysicalTableOverride. This interface allows the host to override a
3627 table via a physical address, instead of the logical address required by
3628 AcpiOsTableOverride. This simplifies the host implementation. Initial
3629 implementation by Thomas Renninger. The ACPICA implementation creates a
3631 shared function for table overrides that attempts both a logical and a
3634 Expanded the OSL memory read/write interfaces to 64-bit data
3635 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
3636 transfer support for GAS register structures passed to AcpiRead and
3639 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
3641 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
3643 See the ACPICA reference for details. ACPICA BZ 942. This option removes
3645 10% of the code and 5% of the static data, and the following hardware
3647 features become unavailable:
3648 PM Event and Control registers
3649 SCI interrupt (and handler)
3651 General Purpose Events (GPEs)
3654 FACS table (Waking vectors and Global Lock)
3656 Updated the unix tarball directory structure to match the ACPICA git
3658 tree. This ensures that the generic unix makefiles work properly (in
3659 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
3662 Updated the return value of the _REV predefined method to integer value 5
3664 reflect ACPI 5.0 support.
3666 Moved the external ACPI PM timer interface prototypes to the public
3668 file where they belong.
3670 Example Code and Data Size: These are the sizes for the OS-independent
3671 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3673 version of the code includes the debug output trace mechanism and has a
3675 larger code and data size.
3678 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3679 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3681 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3682 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3685 2) iASL Compiler/Disassembler and Tools:
3687 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
3688 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
3689 incorrectly displayed.
3691 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
3694 ----------------------------------------
3695 11 January 2012. Summary of changes for version 20120111:
3698 1) ACPICA Core Subsystem:
3700 Implemented a new mechanism to allow host device drivers to check for
3702 range conflicts with ACPI Operation Regions. Both SystemMemory and
3704 address spaces are supported. A new external interface,
3705 AcpiCheckAddressRange,
3706 allows drivers to check an address range against the ACPI namespace. See
3708 ACPICA reference for additional details. Adds one new file,
3709 utilities/utaddress.c. Lin Ming, Bob Moore.
3711 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
3714 Status registers, update the ACPI 5.0 flags, and update internal data
3715 structures to handle an FADT larger than 256 bytes. The size of the ACPI
3719 Updated all ACPICA copyrights and signons to 2012. Added the 2012
3721 all module headers and signons, including the standard Linux header. This
3722 affects virtually every file in the ACPICA core subsystem, iASL compiler,
3724 all ACPICA utilities.
3726 Example Code and Data Size: These are the sizes for the OS-independent
3727 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3729 version of the code includes the debug output trace mechanism and has a
3731 larger code and data size.
3734 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3735 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3737 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3738 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3741 2) iASL Compiler/Disassembler and Tools:
3743 Disassembler: fixed a problem with the automatic resource tag generation
3744 support. Fixes a problem where the resource tags are inadvertently not
3745 constructed if the table being disassembled contains external references
3747 control methods. Moved the actual construction of the tags to after the
3749 namespace is constructed (after 2nd parse is invoked due to external
3751 method references.) ACPICA BZ 941.
3753 Table Compiler: Make all "generic" operators caseless. These are the
3755 like UINT8, String, etc. Making these caseless improves ease-of-use.
3759 ----------------------------------------
3760 23 November 2011. Summary of changes for version 20111123:
3762 0) ACPI 5.0 Support:
3764 This release contains full support for the ACPI 5.0 specification, as
3767 Reduced Hardware Support:
3768 -------------------------
3770 This support allows for ACPI systems without the usual ACPI hardware.
3772 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
3774 not attempt to initialize or use any of the usual ACPI hardware. Note,
3776 this flag is set, all of the following ACPI hardware is assumed to be not
3777 present and is not initialized or accessed:
3779 General Purpose Events (GPEs)
3780 Fixed Events (PM1a/PM1b and PM Control)
3781 Power Management Timer and Console Buttons (power/sleep)
3782 Real-time Clock Alarm
3784 System Control Interrupt (SCI)
3785 The FACS is assumed to be non-existent
3790 All new tables and updates to existing tables are fully supported in the
3791 ACPICA headers (for use by device drivers), the disassembler, and the
3793 Data Table Compiler. ACPI 5.0 defines these new tables:
3795 BGRT /* Boot Graphics Resource Table */
3796 DRTM /* Dynamic Root of Trust for Measurement table */
3797 FPDT /* Firmware Performance Data Table */
3798 GTDT /* Generic Timer Description Table */
3799 MPST /* Memory Power State Table */
3800 PCCT /* Platform Communications Channel Table */
3801 PMTT /* Platform Memory Topology Table */
3802 RASF /* RAS Feature table */
3804 Operation Regions/SpaceIDs:
3805 ---------------------------
3807 All new operation regions are fully supported by the iASL compiler, the
3808 disassembler, and the ACPICA runtime code (for dispatch to region
3810 The new operation region Space IDs are:
3815 Resource Descriptors:
3816 ---------------------
3818 All new ASL resource descriptors are fully supported by the iASL
3821 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
3823 all new predefined resource tags). New descriptors are:
3832 ASL/AML Operators, New and Modified:
3833 ------------------------------------
3835 One new operator is added, the Connection operator, which is used to
3837 a GeneralPurposeIo or GenericSerialBus resource descriptor with
3839 field objects within an operation region. Several new protocols are
3841 with the AccessAs operator. All are fully supported by the iASL compiler,
3842 disassembler, and runtime ACPICA AML interpreter:
3844 Connection // Declare Field Connection
3846 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
3847 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
3849 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
3850 RawDataBuffer // Data type for Vendor Data
3853 Predefined ASL/AML Objects:
3854 ---------------------------
3856 All new predefined objects/control-methods are supported by the iASL
3858 and the ACPICA runtime validation/repair (arguments and return values.)
3860 predefined names include the following:
3862 Standard Predefined Names (Objects or Control Methods):
3863 _AEI, _CLS, _CPC, _CWS, _DEP,
3864 _DLM, _EVT, _GCP, _CRT, _GWS,
3865 _HRV, _PRE, _PSE, _SRT, _SUB.
3867 Resource Tags (Names used to access individual fields within resource
3869 _DBT, _DPL, _DRS, _END, _FLC,
3870 _IOR, _LIN, _MOD, _PAR, _PHA,
3871 _PIN, _PPI, _POL, _RXL, _SLV,
3872 _SPE, _STB, _TXL, _VEN.
3874 ACPICA External Interfaces:
3875 ---------------------------
3877 Several new interfaces have been defined for use by ACPI-related device
3878 drivers and other host OS services:
3880 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
3882 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
3883 provided by the BIOS. They are intended to be used in conjunction with
3885 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
3886 mutual exclusion with the AML code/interpreter.
3888 AcpiGetEventResources: Returns the (formatted) resource descriptors as
3890 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
3892 resource descriptors associated with hardware-reduced platform events,
3894 to the AcpiGetCurrentResources interface.
3896 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
3897 operation regions, information about the Connection() object and any
3899 length information is passed to the region handler within the Context
3902 AcpiBufferToResource: This interface converts a raw AML buffer containing
3904 resource template or resource descriptor to the ACPI_RESOURCE internal
3906 suitable for use by device drivers. Can be used by an operation region
3908 to convert the Connection() buffer object into a ACPI_RESOURCE.
3910 Miscellaneous/Tools/TestSuites:
3911 -------------------------------
3913 Support for extended _HID names (Four alpha characters instead of three).
3914 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
3915 Support for ACPI 5.0 features in the ASLTS test suite.
3916 Fully updated documentation (ACPICA and iASL reference documents.)
3918 ACPI Table Definition Language:
3919 -------------------------------
3921 Support for this language was implemented and released as a subsystem of
3923 iASL compiler in 2010. (See the iASL compiler User Guide.)
3926 Non-ACPI 5.0 changes for this release:
3927 --------------------------------------
3929 1) ACPICA Core Subsystem:
3931 Fix a problem with operation region declarations where a failure can
3934 the region name and an argument that evaluates to an object (such as the
3935 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
3938 Do not abort an ACPI table load if an invalid space ID is found within.
3940 will be caught later if the offending method is executed. ACPICA BZ 925.
3942 Fixed an issue with the FFixedHW space ID where the ID was not always
3943 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
3945 Fixed a problem with the 32-bit generation of the unix-specific OSL
3946 (osunixxf.c). Lin Ming, ACPICA BZ 936.
3948 Several changes made to enable generation with the GCC 4.6 compiler.
3952 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
3954 field registers out-of-range.
3956 2) iASL Compiler/Disassembler and Tools:
3958 iASL: Implemented the __PATH__ operator, which returns the full pathname
3960 the current source file.
3962 AcpiHelp: Automatically display expanded keyword information for all ASL
3965 Debugger: Add "Template" command to disassemble/dump resource template
3968 Added a new master script to generate and execute the ASLTS test suite.
3969 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
3971 iASL: Fix problem with listing generation during processing of the
3973 operator where AML listing was disabled until the entire Switch block was
3976 iASL: Improve support for semicolon statement terminators. Fix "invalid
3977 character" message for some cases when the semicolon is used. Semicolons
3979 now allowed after every <Term> grammar element. ACPICA BZ 927.
3981 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
3984 Disassembler: Fix problem with disassembly of the DataTableRegion
3986 where an inadvertent "Unhandled deferred opcode" message could be
3989 3) Example Code and Data Size
3991 These are the sizes for the OS-independent acpica.lib produced by the
3992 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3993 includes the debug output trace mechanism and has a much larger code and
3998 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3999 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4001 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4002 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4004 ----------------------------------------
4005 22 September 2011. Summary of changes for version 20110922:
4009 Support for ACPI 5.0 in ACPICA has been underway for several months and
4011 be released at the same time that ACPI 5.0 is officially released.
4013 The ACPI 5.0 specification is on track for release in the next few
4016 1) ACPICA Core Subsystem:
4018 Fixed a problem where the maximum sleep time for the Sleep() operator was
4019 intended to be limited to two seconds, but was inadvertently limited to
4023 Linux and Unix makefiles: Added header file dependencies to ensure
4025 generation of ACPICA core code and utilities. Also simplified the
4027 considerably through the use of the vpath variable to specify search
4031 2) iASL Compiler/Disassembler and Tools:
4033 iASL: Implemented support to check the access length for all fields
4035 access named Resource Descriptor fields. For example, if a resource field
4037 defined to be two bits, a warning is issued if a CreateXxxxField() is
4039 with an incorrect bit length. This is implemented for all current
4041 descriptor names. ACPICA BZ 930.
4043 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4047 iASL: Fixed a couple of issues associated with variable-length package
4048 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4050 VAR_PACKAGE when these are used as a package length. 2) Allow the
4052 opcode (in addition to PACKAGE) when validating object types for
4056 iASL: Emit statistics for all output files (instead of just the ASL input
4058 AML output). Includes listings, hex files, etc.
4060 iASL: Added -G option to the table compiler to allow the compilation of
4062 ACPI tables. The only part of a table that is required is the standard
4067 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4069 which also adds correct 64-bit support. Also, now all output filenames
4071 completely lower case.
4073 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4074 loading table files. A warning is issued for any such tables. The only
4075 exception is an FADT. This also fixes a possible fault when attempting to
4077 non-AML tables. ACPICA BZ 932.
4079 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4081 missing table terminator could cause a fault when using the -p option.
4083 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4086 3) Example Code and Data Size
4088 These are the sizes for the OS-independent acpica.lib produced by the
4089 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4090 includes the debug output trace mechanism and has a much larger code and
4094 Previous Release (VC 9.0):
4095 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4096 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4097 Current Release (VC 9.0):
4098 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4099 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4102 ----------------------------------------
4103 23 June 2011. Summary of changes for version 20110623:
4105 1) ACPI CA Core Subsystem:
4107 Updated the predefined name repair mechanism to not attempt repair of a
4109 return object if a _PSS object is present. We can only sort the _TSS
4111 package if there is no _PSS within the same scope. This is because if
4114 present, the ACPI specification dictates that the _TSS Power Dissipation
4116 is to be ignored, and therefore some BIOSs leave garbage values in the
4118 Power field(s). In this case, it is best to just return the _TSS package
4120 is. Reported by, and fixed with assistance from Fenghua Yu.
4122 Added an option to globally disable the control method return value
4124 and repair. This runtime option can be used to disable return value
4127 this is causing a problem on a particular machine. Also added an option
4129 AcpiExec (-dr) to set this disable flag.
4131 All makefiles and project files: Major changes to improve generation of
4133 tools. ACPICA BZ 912:
4134 Reduce default optimization levels to improve compatibility
4135 For Linux, add strict-aliasing=0 for gcc 4
4136 Cleanup and simplify use of command line defines
4137 Cleanup multithread library support
4138 Improve usage messages
4140 Linux-specific header: update handling of THREAD_ID and pthread. For the
4142 bit case, improve casting to eliminate possible warnings, especially with
4146 Example Code and Data Size: These are the sizes for the OS-independent
4147 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4149 version of the code includes the debug output trace mechanism and has a
4151 larger code and data size.
4153 Previous Release (VC 9.0):
4154 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4155 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4156 Current Release (VC 9.0):
4157 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4158 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4160 2) iASL Compiler/Disassembler and Tools:
4162 With this release, a new utility named "acpihelp" has been added to the
4164 package. This utility summarizes the ACPI specification chapters for the
4166 and AML languages. It generates under Linux/Unix as well as Windows, and
4167 provides the following functionality:
4168 Find/display ASL operator(s) -- with description and syntax.
4169 Find/display ASL keyword(s) -- with exact spelling and descriptions.
4170 Find/display ACPI predefined name(s) -- with description, number
4171 of arguments, and the return value data type.
4172 Find/display AML opcode name(s) -- with opcode, arguments, and
4174 Decode/display AML opcode -- with opcode name, arguments, and
4177 Service Layers: Make multi-thread support configurable. Conditionally
4179 the multi-thread support so that threading libraries will not be linked
4182 necessary. The only tool that requires multi-thread support is AcpiExec.
4184 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
4186 Bison appear to want the interface to yyerror to be a const char * (or at
4187 least this is a problem when generating iASL on some systems.) ACPICA BZ
4191 Tools: Fix for systems where O_BINARY is not defined. Only used for
4193 versions of the tools.
4195 ----------------------------------------
4196 27 May 2011. Summary of changes for version 20110527:
4198 1) ACPI CA Core Subsystem:
4200 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
4202 signature. Now, only allow SSDT, OEMx, and a null signature. History:
4203 1) Originally, we checked the table signature for "SSDT" or "PSDT".
4204 (PSDT is now obsolete.)
4205 2) We added support for OEMx tables, signature "OEM" plus a fourth
4206 "don't care" character.
4207 3) Valid tables were encountered with a null signature, so we just
4208 gave up on validating the signature, (05/2008).
4209 4) We encountered non-AML tables such as the MADT, which caused
4210 interpreter errors and kernel faults. So now, we once again allow
4211 only SSDT, OEMx, and now, also a null signature. (05/2011).
4213 Added the missing _TDL predefined name to the global name list in order
4215 enable validation. Affects both the core ACPICA code and the iASL
4218 Example Code and Data Size: These are the sizes for the OS-independent
4219 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4221 version of the code includes the debug output trace mechanism and has a
4223 larger code and data size.
4225 Previous Release (VC 9.0):
4226 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4227 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4228 Current Release (VC 9.0):
4229 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4230 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4232 2) iASL Compiler/Disassembler and Tools:
4234 Debugger/AcpiExec: Implemented support for "complex" method arguments on
4236 debugger command line. This adds support beyond simple integers --
4238 Strings, Buffers, and Packages. Includes support for nested packages.
4239 Increased the default command line buffer size to accommodate these
4241 See the ACPICA reference for details and syntax. ACPICA BZ 917.
4243 Debugger/AcpiExec: Implemented support for "default" method arguments for
4245 Execute/Debug command. Now, the debugger will always invoke a control
4247 with the required number of arguments -- even if the command line
4249 none or insufficient arguments. It uses default integer values for any
4251 arguments. Also fixes a bug where only six method arguments maximum were
4252 supported instead of the required seven.
4254 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
4256 also return status in order to prevent buffer overruns. See the ACPICA
4257 reference for details and syntax. ACPICA BZ 921
4259 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
4260 makefiles to simplify support for the two different but similar parser
4261 generators, bison and yacc.
4263 Updated the generic unix makefile for gcc 4. The default gcc version is
4265 expected to be 4 or greater, since options specific to gcc 4 are used.
4267 ----------------------------------------
4268 13 April 2011. Summary of changes for version 20110413:
4270 1) ACPI CA Core Subsystem:
4272 Implemented support to execute a so-called "orphan" _REG method under the
4274 device. This change will force the execution of a _REG method underneath
4277 device even if there is no corresponding operation region of type
4278 EmbeddedControl. Fixes a problem seen on some machines and apparently is
4279 compatible with Windows behavior. ACPICA BZ 875.
4281 Added more predefined methods that are eligible for automatic NULL
4283 element removal. This change adds another group of predefined names to
4286 of names that can be repaired by having NULL package elements dynamically
4287 removed. This group are those methods that return a single variable-
4289 package containing simple data types such as integers, buffers, strings.
4291 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
4294 and _TZD. ACPICA BZ 914.
4296 Split and segregated all internal global lock functions to a new file,
4299 Updated internal address SpaceID for DataTable regions. Moved this
4302 id in preparation for ACPI 5.0 changes that will include some new space
4305 change should not affect user/host code.
4307 Example Code and Data Size: These are the sizes for the OS-independent
4309 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4311 the code includes the debug output trace mechanism and has a much larger
4316 Previous Release (VC 9.0):
4317 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4318 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4319 Current Release (VC 9.0):
4320 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4321 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4323 2) iASL Compiler/Disassembler and Tools:
4325 iASL/DTC: Major update for new grammar features. Allow generic data types
4327 custom ACPI tables. Field names are now optional. Any line can be split
4329 multiple lines using the continuation char (\). Large buffers now use
4331 continuation character(s) and no colon on the continuation lines. See the
4333 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
4336 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
4338 Since the parser stuffs a "zero" as the return value for these statements
4341 the underlying AML grammar), they were seen as "return with value" by the
4343 semantic checking. They are now seen correctly as "null" return
4346 iASL: Check if a_REG declaration has a corresponding Operation Region.
4348 check for each _REG to ensure that there is in fact a corresponding
4350 region declaration in the same scope. If not, the _REG method is not very
4352 since it probably won't be executed. ACPICA BZ 915.
4354 iASL/DTC: Finish support for expression evaluation. Added a new
4357 that implements c-style operator precedence and parenthesization. ACPICA
4361 Disassembler/DTC: Remove support for () and <> style comments in data
4364 that DTC has full expression support, we don't want to have comment
4367 start with a parentheses or a less-than symbol. Now, only the standard /*
4370 comments are supported, as well as the bracket [] comments.
4372 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
4374 headers in the acpidump file. Update the header validation to support
4376 tables. Problem introduced in previous AcpiXtract version in the change
4378 support "wrong checksum" error messages emitted by acpidump utility.
4380 iASL: Add a * option to generate all template files (as a synonym for
4384 "iasl -T *" or "iasl -T ALL".
4386 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
4388 abort the compiler on "fatal" errors, simply should abort the current
4390 This allows multiple compiles with a single (possibly wildcard) compiler
4393 ----------------------------------------
4394 16 March 2011. Summary of changes for version 20110316:
4396 1) ACPI CA Core Subsystem:
4398 Fixed a problem caused by a _PRW method appearing at the namespace root
4400 during the setup of wake GPEs. A fault could occur if a _PRW directly
4403 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
4405 Implemented support for "spurious" Global Lock interrupts. On some
4407 global lock interrupt can occur without the pending flag being set. Upon
4410 interrupt, we now ensure that a thread is actually waiting for the lock
4412 signaling GL availability. Rafael Wysocki, Bob Moore.
4414 Example Code and Data Size: These are the sizes for the OS-independent
4416 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4418 the code includes the debug output trace mechanism and has a much larger
4423 Previous Release (VC 9.0):
4424 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4425 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4426 Current Release (VC 9.0):
4427 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4428 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4430 2) iASL Compiler/Disassembler and Tools:
4432 Implemented full support for the "SLIC" ACPI table. Includes support in
4434 header files, disassembler, table compiler, and template generator. Bob
4438 AcpiXtract: Correctly handle embedded comments and messages from
4440 Apparently some or all versions of acpidump will occasionally emit a
4443 "Wrong checksum", etc., into the dump file. This was causing problems for
4444 AcpiXtract. ACPICA BZ 905.
4446 iASL: Fix the Linux makefile by removing an inadvertent double file
4450 AcpiExec: Update installation of operation region handlers. Install one
4452 for a user-defined address space. This is used by the ASL test suite
4455 ----------------------------------------
4456 11 February 2011. Summary of changes for version 20110211:
4458 1) ACPI CA Core Subsystem:
4460 Added a mechanism to defer _REG methods for some early-installed
4462 Most user handlers should be installed before call to
4463 AcpiEnableSubsystem.
4464 However, Event handlers and region handlers should be installed after
4465 AcpiInitializeObjects. Override handlers for the "default" regions should
4467 installed early, however. This change executes all _REG methods for the
4468 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
4469 chicken/egg issues between them. ACPICA BZ 848.
4471 Implemented an optimization for GPE detection. This optimization will
4473 ignore GPE registers that contain no enabled GPEs -- there is no need to
4474 read the register since this information is available internally. This
4475 becomes more important on machines with a large GPE space. ACPICA
4477 884. Lin Ming. Suggestion from Joe Liu.
4479 Removed all use of the highly unreliable FADT revision field. The
4481 number in the FADT has been found to be completely unreliable and cannot
4483 trusted. Only the actual table length can be used to infer the version.
4485 change updates the ACPICA core and the disassembler so that both no
4487 even look at the FADT version and instead depend solely upon the FADT
4490 Fix an unresolved name issue for the no-debug and no-error-message source
4491 generation cases. The _AcpiModuleName was left undefined in these cases,
4493 it is actually needed as a parameter to some interfaces. Define
4494 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
4496 Split several large files (makefiles and project files updated)
4497 utglobal.c -> utdecode.c
4498 dbcomds.c -> dbmethod.c dbnames.c
4499 dsopcode.c -> dsargs.c dscontrol.c
4500 dsload.c -> dsload2.c
4501 aslanalyze.c -> aslbtypes.c aslwalks.c
4503 Example Code and Data Size: These are the sizes for the OS-independent
4504 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4505 debug version of the code includes the debug output trace mechanism and
4507 a much larger code and data size.
4509 Previous Release (VC 9.0):
4510 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4511 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4512 Current Release (VC 9.0):
4513 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4514 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4516 2) iASL Compiler/Disassembler and Tools:
4518 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
4519 These are useful C-style macros with the standard definitions. ACPICA
4522 iASL/DTC: Added support for integer expressions and labels. Support for
4524 expressions for all integer fields in all ACPI tables. Support for labels
4526 "generic" portions of tables such as UEFI. See the iASL reference manual.
4528 Debugger: Added a command to display the status of global handlers. The
4529 "handlers" command will display op region, fixed event, and miscellaneous
4530 global handlers. installation status -- and for op regions, whether
4532 or user-installed handler will be used.
4534 iASL: Warn if reserved method incorrectly returns a value. Many
4536 names are defined such that they do not return a value. If implemented as
4538 method, issue a warning if such a name explicitly returns a value. ACPICA
4541 iASL: Added detection of GPE method name conflicts. Detects a conflict
4543 there are two GPE methods of the form _Lxy and _Exy in the same scope.
4545 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
4547 iASL/DTC: Fixed a couple input scanner issues with comments and line
4548 numbers. Comment remover could get confused and miss a comment ending.
4550 a problem with line counter maintenance.
4552 iASL/DTC: Reduced the severity of some errors from fatal to error. There
4554 no need to abort on simple errors within a field definition.
4556 Debugger: Simplified the output of the help command. All help output now
4558 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
4560 ----------------------------------------
4561 12 January 2011. Summary of changes for version 20110112:
4563 1) ACPI CA Core Subsystem:
4565 Fixed a race condition between method execution and namespace walks that
4567 possibly cause a fault. The problem was apparently introduced in version
4568 20100528 as a result of a performance optimization that reduces the
4571 namespace walks upon method exit by using the delete_namespace_subtree
4572 function instead of the delete_namespace_by_owner function used
4574 Bug is a missing namespace lock in the delete_namespace_subtree function.
4575 dana.myers@oracle.com
4577 Fixed several issues and a possible fault with the automatic "serialized"
4578 method support. History: This support changes a method to "serialized" on
4580 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
4581 possibility that it cannot handle reentrancy. This fix repairs a couple
4583 issues seen in the field, especially on machines with many cores:
4585 1) Delete method children only upon the exit of the last thread,
4586 so as to not delete objects out from under other running threads
4587 (and possibly causing a fault.)
4588 2) Set the "serialized" bit for the method only upon the exit of the
4589 Last thread, so as to not cause deadlock when running threads
4591 3) Cleanup the use of the AML "MethodFlags" and internal method flags
4592 so that there is no longer any confusion between the two.
4594 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
4596 Debugger: Now lock the namespace for duration of a namespace dump.
4598 issues if the namespace is changing dynamically underneath the debugger.
4599 Especially affects temporary namespace nodes, since the debugger displays
4602 Updated the ordering of include files. The ACPICA headers should appear
4603 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
4605 any necessary compiler-specific defines, etc. Affects the ACPI-related
4609 Updated all ACPICA copyrights and signons to 2011. Added the 2011
4611 to all module headers and signons, including the Linux header. This
4613 virtually every file in the ACPICA core subsystem, iASL compiler, and all
4616 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
4617 project files for VC++ 6.0 are now obsolete. New project files can be
4619 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
4622 Example Code and Data Size: These are the sizes for the OS-independent
4623 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4624 debug version of the code includes the debug output trace mechanism and
4626 much larger code and data size.
4628 Previous Release (VC 6.0):
4629 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4630 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4631 Current Release (VC 9.0):
4632 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4633 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4635 2) iASL Compiler/Disassembler and Tools:
4637 iASL: Added generic data types to the Data Table compiler. Add "generic"
4639 types such as UINT32, String, Unicode, etc., to simplify the generation
4641 platform-defined tables such as UEFI. Lin Ming.
4643 iASL: Added listing support for the Data Table Compiler. Adds listing
4645 (-l) to display actual binary output for each line of input code.
4647 ----------------------------------------
4648 09 December 2010. Summary of changes for version 20101209:
4650 1) ACPI CA Core Subsystem:
4652 Completed the major overhaul of the GPE support code that was begun in
4654 2010. Major features include: removal of _PRW execution in ACPICA (host
4655 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
4656 changes to existing interfaces, simplification of GPE handler operation,
4658 a handful of new interfaces:
4664 One new file, evxfgpe.c to consolidate all external GPE interfaces.
4666 See the ACPICA Programmer Reference for full details and programming
4667 information. See the new section 4.4 "General Purpose Event (GPE)
4669 for a full overview, and section 8.7 "ACPI General Purpose Event
4671 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
4673 Bob Moore, Rafael Wysocki.
4675 Implemented a new GPE feature for Windows compatibility, the "Implicit
4677 GPE Notify". This feature will automatically issue a Notify(2) on a
4679 when a Wake GPE is received if there is no corresponding GPE method or
4680 handler. ACPICA BZ 870.
4682 Fixed a problem with the Scope() operator during table parse and load
4684 During load phase (table load or method execution), the scope operator
4686 not enter the target into the namespace. Instead, it should open a new
4688 at the target location. Linux BZ 19462, ACPICA BZ 882.
4690 Example Code and Data Size: These are the sizes for the OS-independent
4691 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4692 debug version of the code includes the debug output trace mechanism and
4694 much larger code and data size.
4697 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4698 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4700 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4701 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4703 2) iASL Compiler/Disassembler and Tools:
4705 iASL: Relax the alphanumeric restriction on _CID strings. These strings
4707 "bus-specific" per the ACPI specification, and therefore any characters
4709 acceptable. The only checks that can be performed are for a null string
4711 perhaps for a leading asterisk. ACPICA BZ 886.
4713 iASL: Fixed a problem where a syntax error that caused a premature EOF
4714 condition on the source file emitted a very confusing error message. The
4715 premature EOF is now detected correctly. ACPICA BZ 891.
4717 Disassembler: Decode the AccessSize within a Generic Address Structure
4719 access, word access, etc.) Note, this field does not allow arbitrary bit
4720 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
4722 New: AcpiNames utility - Example namespace dump utility. Shows an example
4724 ACPICA configuration for a minimal namespace dump utility. Uses table and
4725 namespace managers, but no AML interpreter. Does not add any
4727 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
4728 partition and configure ACPICA. ACPICA BZ 883.
4730 AML Debugger: Increased the debugger buffer size for method return
4732 Was 4K, increased to 16K. Also enhanced error messages for debugger
4734 execution, including the buffer overflow case.
4736 ----------------------------------------
4737 13 October 2010. Summary of changes for version 20101013:
4739 1) ACPI CA Core Subsystem:
4741 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
4743 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
4744 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
4746 Changed the type of the predefined namespace object _TZ from ThermalZone
4748 Device. This was found to be confusing to the host software that
4750 the various thermal zones, since _TZ is not really a ThermalZone.
4753 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
4756 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
4757 string is "Windows 2006 SP2".
4759 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
4761 code automatically repairs _HID-related strings, this type of code is no
4762 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
4765 Example Code and Data Size: These are the sizes for the OS-independent
4766 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4767 debug version of the code includes the debug output trace mechanism and
4769 much larger code and data size.
4772 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4773 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4775 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4776 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4778 2) iASL Compiler/Disassembler and Tools:
4780 iASL: Implemented additional compile-time validation for _HID strings.
4782 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
4785 the string must be exactly seven or eight characters. For both _HID and
4787 strings, all characters must be alphanumeric. ACPICA BZ 874.
4789 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
4790 descriptors that are mostly or all zeros, with the expectation that they
4792 be filled in at runtime. iASL now allows this as long as there is a
4794 tag" (name) associated with the descriptor, which gives the ASL a handle
4795 needed to modify the descriptor. ACPICA BZ 873.
4797 Added single-thread support to the generic Unix application OSL.
4799 for iASL support, this change removes the use of semaphores in the
4801 threaded ACPICA tools/applications - increasing performance. The
4802 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
4803 option. ACPICA BZ 879.
4805 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
4807 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
4809 iASL: Moved all compiler messages to a new file, aslmessages.h.
4811 ----------------------------------------
4812 15 September 2010. Summary of changes for version 20100915:
4814 1) ACPI CA Core Subsystem:
4816 Removed the AcpiOsDerivePciId OSL interface. The various host
4818 of this function were not OS-dependent and are now obsolete and can be
4819 removed from all host OSLs. This function has been replaced by
4820 AcpiHwDerivePciId, which is now part of the ACPICA core code.
4821 AcpiHwDerivePciId has been implemented without recursion. Adds one new
4822 module, hwpci.c. ACPICA BZ 857.
4824 Implemented a dynamic repair for _HID and _CID strings. The following
4825 problems are now repaired at runtime: 1) Remove a leading asterisk in the
4826 string, and 2) the entire string is uppercased. Both repairs are in
4827 accordance with the ACPI specification and will simplify host driver
4831 The ACPI_THREAD_ID type is no longer configurable, internally it is now
4832 always UINT64. This simplifies the ACPICA code, especially any printf
4834 UINT64 is the only common data type for all thread_id types across all
4835 operating systems. It is now up to the host OSL to cast the native
4837 type to UINT64 before returning the value to ACPICA (via
4839 Lin Ming, Bob Moore.
4841 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
4843 keyword is not standard across compilers, and this type allows inline to
4845 configured on a per-compiler basis. Lin Ming.
4847 Made the system global AcpiGbl_SystemAwakeAndRunning publically
4849 Added an extern for this boolean in acpixf.h. Some hosts utilize this
4851 during suspend/restore operations. ACPICA BZ 869.
4853 All code that implements error/warning messages with the "ACPI:" prefix
4855 been moved to a new module, utxferror.c.
4857 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
4859 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
4861 Example Code and Data Size: These are the sizes for the OS-independent
4862 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4863 debug version of the code includes the debug output trace mechanism and
4865 much larger code and data size.
4868 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4869 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4871 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4872 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4874 2) iASL Compiler/Disassembler and Tools:
4876 iASL/Disassembler: Write ACPI errors to stderr instead of the output
4878 This keeps the output files free of random error messages that may
4880 from within the namespace/interpreter code. Used this opportunity to
4882 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
4883 866. Lin Ming, Bob Moore.
4885 Tools: update some printfs for ansi warnings on size_t. Handle width
4887 of size_t on 32-bit versus 64-bit generations. Lin Ming.
4889 ----------------------------------------
4890 06 August 2010. Summary of changes for version 20100806:
4892 1) ACPI CA Core Subsystem:
4894 Designed and implemented a new host interface to the _OSI support code.
4896 will allow the host to dynamically add or remove multiple _OSI strings,
4898 well as install an optional handler that is called for each _OSI
4900 Also added a new AML debugger command, 'osi' to display and modify the
4902 _OSI string table, and test support in the AcpiExec utility. See the
4904 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
4906 AcpiInstallInterface - Add an _OSI string.
4907 AcpiRemoveInterface - Delete an _OSI string.
4908 AcpiInstallInterfaceHandler - Install optional _OSI handler.
4910 AcpiOsValidateInterface - no longer used.
4912 source/components/utilities/utosi.c
4914 Re-introduced the support to enable multi-byte transfers for Embedded
4915 Controller (EC) operation regions. A reported problem was found to be a
4917 in the host OS, not in the multi-byte support. Previously, the maximum
4919 size passed to the EC operation region handler was a single byte. There
4921 often EC Fields larger than one byte that need to be transferred, and it
4923 useful for the EC driver to lock these as a single transaction. This
4925 enables single transfers larger than 8 bits. This effectively changes the
4926 access to the EC space from ByteAcc to AnyAcc, and will probably require
4927 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
4929 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
4931 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
4932 prototype in acpiosxf.h had the output value pointer as a (void *).
4933 It should be a (UINT64 *). This may affect some host OSL code.
4935 Fixed a couple problems with the recently modified Linux makefiles for
4937 and AcpiExec. These new makefiles place the generated object files in the
4938 local directory so that there can be no collisions between the files that
4940 shared between them that are compiled with different options.
4942 Example Code and Data Size: These are the sizes for the OS-independent
4943 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4944 debug version of the code includes the debug output trace mechanism and
4946 much larger code and data size.
4949 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4950 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4952 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4953 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4955 2) iASL Compiler/Disassembler and Tools:
4957 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
4959 namespace from and disassemble an entire group of AML files. Useful for
4960 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
4962 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
4964 iASL: Allow multiple invocations of -e option. This change allows
4966 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
4970 ----------------------------------------
4971 02 July 2010. Summary of changes for version 20100702:
4973 1) ACPI CA Core Subsystem:
4975 Implemented several updates to the recently added GPE reference count
4976 support. The model for "wake" GPEs is changing to give the host OS
4978 control of these GPEs. Eventually, the ACPICA core will not execute any
4980 methods, since the host already must execute them. Also, additional
4982 were made to help ensure that the reference counts are kept in proper
4983 synchronization with reality. Rafael J. Wysocki.
4985 1) Ensure that GPEs are not enabled twice during initialization.
4986 2) Ensure that GPE enable masks stay in sync with the reference count.
4987 3) Do not inadvertently enable GPEs when writing GPE registers.
4988 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
4989 interface. This interface will set or clear individual GPEs for wakeup.
4990 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
4992 are now used for "runtime" GPEs only.
4994 Changed the behavior of the GPE install/remove handler interfaces. The
4997 no longer disabled during this process, as it was found to cause problems
4999 some machines. Rafael J. Wysocki.
5001 Reverted a change introduced in version 20100528 to enable Embedded
5002 Controller multi-byte transfers. This change was found to cause problems
5004 Index Fields and possibly Bank Fields. It will be reintroduced when these
5005 problems have been resolved.
5007 Fixed a problem with references to Alias objects within Package Objects.
5009 reference to an Alias within the definition of a Package was not always
5010 resolved properly. Aliases to objects like Processors, Thermal zones,
5012 were resolved to the actual object instead of a reference to the object
5015 should be. Package objects are only allowed to contain integer, string,
5016 buffer, package, and reference objects. Redhat bugzilla 608648.
5018 Example Code and Data Size: These are the sizes for the OS-independent
5019 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5020 debug version of the code includes the debug output trace mechanism and
5022 much larger code and data size.
5025 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5026 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5028 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5029 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5031 2) iASL Compiler/Disassembler and Tools:
5033 iASL: Implemented a new compiler subsystem to allow definition and
5034 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5036 are called "ACPI Data Tables", and the new compiler is the "Data Table
5037 Compiler". This compiler is intended to simplify the existing error-prone
5038 process of creating these tables for the BIOS, as well as allowing the
5039 disassembly, modification, recompilation, and override of existing ACPI
5041 tables. See the iASL User Guide for detailed information.
5043 iASL: Implemented a new Template Generator option in support of the new
5045 Table Compiler. This option will create examples of all known ACPI tables
5046 that can be used as the basis for table development. See the iASL
5047 documentation and the -T option.
5049 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5052 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5053 object files in the local directory so that there can be no collisions
5054 between the shared files between them that are generated with different
5057 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5059 the #define __APPLE__ to enable this support.
5061 ----------------------------------------
5062 28 May 2010. Summary of changes for version 20100528:
5064 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5065 available at www.acpi.info. This is primarily an errata release.
5067 1) ACPI CA Core Subsystem:
5069 Undefined ACPI tables: We are looking for the definitions for the
5071 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5073 Implemented support to enable multi-byte transfers for Embedded
5075 (EC) operation regions. Previously, the maximum data size passed to the
5077 operation region handler was a single byte. There are often EC Fields
5079 than one byte that need to be transferred, and it is useful for the EC
5081 to lock these as a single transaction. This change enables single
5083 larger than 8 bits. This effectively changes the access to the EC space
5085 ByteAcc to AnyAcc, and will probably require changes to the host OS
5087 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5089 transfers. Alexey Starikovskiy, Lin Ming
5091 Implemented a performance enhancement for namespace search and access.
5093 change enhances the performance of namespace searches and walks by adding
5095 backpointer to the parent in each namespace node. On large namespaces,
5097 change can improve overall ACPI performance by up to 9X. Adding a pointer
5099 each namespace node increases the overall size of the internal namespace
5101 about 5%, since each namespace entry usually consists of both a namespace
5102 node and an ACPI operand object. However, this is the first growth of the
5103 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5105 Implemented a performance optimization that reduces the number of
5107 walks. On control method exit, only walk the namespace if the method is
5109 to have created namespace objects outside of its local scope. Previously,
5111 entire namespace was traversed on each control method exit. This change
5113 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5116 Added support to truncate I/O addresses to 16 bits for Windows
5118 Some ASL code has been seen in the field that inadvertently has bits set
5119 above bit 15. This feature is optional and is enabled if the BIOS
5121 any Windows OSI strings. It can also be enabled by the host OS. Matthew
5124 Added support to limit the maximum time for the ASL Sleep() operator. To
5125 prevent accidental deep sleeps, limit the maximum time that Sleep() will
5126 actually sleep. Configurable, the default maximum is two seconds. ACPICA
5129 Added run-time validation support for the _WDG and_WED Microsoft
5131 methods. These objects are defined by "Windows Instrumentation", and are
5133 part of the ACPI spec. ACPICA BZ 860.
5135 Expanded all statistic counters used during namespace and device
5136 initialization from 16 to 32 bits in order to support very large
5139 Replaced all instances of %d in printf format specifiers with %u since
5141 all integers in ACPICA are unsigned.
5143 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
5147 Example Code and Data Size: These are the sizes for the OS-independent
5148 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5149 debug version of the code includes the debug output trace mechanism and
5151 much larger code and data size.
5154 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5155 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5157 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5158 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5160 2) iASL Compiler/Disassembler and Tools:
5162 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
5163 methods. These objects are defined by "Windows Instrumentation", and are
5165 part of the ACPI spec. ACPICA BZ 860.
5167 AcpiExec: added option to disable the memory tracking mechanism. The -dt
5168 option will disable the tracking mechanism, which improves performance
5171 AcpiExec: Restructured the command line options into -d (disable) and -e
5174 ----------------------------------------
5175 28 April 2010. Summary of changes for version 20100428:
5177 1) ACPI CA Core Subsystem:
5179 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
5180 including FADT-based and GPE Block Devices, execute any _PRW methods in
5182 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
5183 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
5184 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
5185 Devices. Provides compatibility with other ACPI implementations. Two new
5186 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
5189 Fixed a regression introduced in version 20100331 within the table
5191 where initial table loading could fail. This was introduced in the fix
5193 AcpiReallocateRootTable. Also, renamed some of fields in the table
5195 data structures to clarify their meaning and use.
5197 Fixed a possible allocation overrun during internal object copy in
5198 AcpiUtCopySimpleObject. The original code did not correctly handle the
5200 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
5203 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
5204 possible access beyond end-of-allocation. Also, now fully validate
5206 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
5208 Example Code and Data Size: These are the sizes for the OS-independent
5209 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5210 debug version of the code includes the debug output trace mechanism and
5212 much larger code and data size.
5215 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5216 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5218 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5219 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5221 2) iASL Compiler/Disassembler and Tools:
5223 iASL: Implemented Min/Max/Len/Gran validation for address resource
5224 descriptors. This change implements validation for the address fields
5226 are common to all address-type resource descriptors. These checks are
5227 implemented: Checks for valid Min/Max, length within the Min/Max window,
5228 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
5230 table 6-40 in the ACPI 4.0a specification. Also split the large
5232 and aslrestype2.c files into five new files. ACPICA BZ 840.
5234 iASL: Added support for the _Wxx predefined names. This support was
5236 and these names were not recognized by the compiler as valid predefined
5237 names. ACPICA BZ 851.
5239 iASL: Added an error for all predefined names that are defined to return
5241 value and thus must be implemented as Control Methods. These include all
5243 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
5244 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
5246 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
5248 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
5250 dynamically loaded via the Load() operator. Also cleaned up output for
5253 ta and -tc options. ACPICA BZ 853.
5255 Tests: Added a new file with examples of extended iASL error checking.
5256 Demonstrates the advanced error checking ability of the iASL compiler.
5257 Available at tests/misc/badcode.asl.
5259 ----------------------------------------
5260 31 March 2010. Summary of changes for version 20100331:
5262 1) ACPI CA Core Subsystem:
5264 Completed a major update for the GPE support in order to improve support
5266 shared GPEs and to simplify both host OS and ACPICA code. Added a
5268 count mechanism to support shared GPEs that require multiple device
5270 Several external interfaces have changed. One external interface has been
5271 removed. One new external interface was added. Most of the GPE external
5272 interfaces now use the GPE spinlock instead of the events mutex (and the
5273 Flags parameter for many GPE interfaces has been removed.) See the
5275 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
5277 Wysocki. ACPICA BZ 831.
5280 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
5286 Implemented write support for DataTable operation regions. These regions
5288 defined via the DataTableRegion() operator. Previously, only read support
5290 implemented. The ACPI specification allows DataTableRegions to be
5294 Implemented a new subsystem option to force a copy of the DSDT to local
5295 memory. Optionally copy the entire DSDT to local memory (instead of
5297 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
5299 the original DSDT, creating the need for this option. Default is FALSE,
5303 Implemented detection of a corrupted or replaced DSDT. This change adds
5304 support to detect a DSDT that has been corrupted and/or replaced from
5306 the OS (by firmware). This is typically catastrophic for the system, but
5308 been seen on some machines. Once this problem has been detected, the DSDT
5309 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
5311 Fixed two problems with AcpiReallocateRootTable during the root table
5313 When copying the root table to the new allocation, the length used was
5314 incorrect. The new size was used instead of the current table size,
5316 too much data was copied. Also, the count of available slots for ACPI
5318 was not set correctly. Alexey Starikovskiy, Bob Moore.
5320 Example Code and Data Size: These are the sizes for the OS-independent
5321 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5322 debug version of the code includes the debug output trace mechanism and
5324 much larger code and data size.
5327 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5328 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5330 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5331 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5333 2) iASL Compiler/Disassembler and Tools:
5335 iASL: Implement limited typechecking for values returned from predefined
5336 control methods. The type of any returned static (unnamed) object is now
5337 validated. For example, Return(1). ACPICA BZ 786.
5339 iASL: Fixed a predefined name object verification regression. Fixes a
5341 introduced in version 20100304. An error is incorrectly generated if a
5342 predefined name is declared as a static named object with a value defined
5343 using the keywords "Zero", "One", or "Ones". Lin Ming.
5345 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
5347 reducing the requested registry access rights. ACPICA BZ 842.
5349 Disassembler: fixed a possible fault when generating External()
5351 Introduced in commit ae7d6fd: Properly handle externals with parent-
5353 (carat). Fixes a string length allocation calculation. Lin Ming.
5355 ----------------------------------------
5356 04 March 2010. Summary of changes for version 20100304:
5358 1) ACPI CA Core Subsystem:
5360 Fixed a possible problem with the AML Mutex handling function
5361 AcpiExReleaseMutex where the function could fault under the very rare
5362 condition when the interpreter has blocked, the interpreter lock is
5364 the interpreter is then reentered via the same thread, and attempts to
5365 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
5369 Implemented additional configuration support for the AML "Debug Object".
5370 Output from the debug object can now be enabled via a global variable,
5371 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
5373 This debug output is now available in the release version of ACPICA
5375 of just the debug version. Also, the entire debug output module can now
5377 configured out of the ACPICA build if desired. One new file added,
5378 executer/exdebug.c. Lin Ming, Bob Moore.
5380 Added header support for the ACPI MCHI table (Management Controller Host
5381 Interface Table). This table was added in ACPI 4.0, but the defining
5383 has only recently become available.
5385 Standardized output of integer values for ACPICA warnings/errors. Always
5387 0x prefix for hex output, always use %u for unsigned integer decimal
5389 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
5391 invocations.) These invocations were converted from the original
5392 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
5394 Example Code and Data Size: These are the sizes for the OS-independent
5395 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5396 debug version of the code includes the debug output trace mechanism and
5398 much larger code and data size.
5401 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5402 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5404 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5405 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5407 2) iASL Compiler/Disassembler and Tools:
5409 iASL: Implemented typechecking support for static (non-control method)
5410 predefined named objects that are declared with the Name() operator. For
5411 example, the type of this object is now validated to be of type Integer:
5412 Name(_BBN, 1). This change migrates the compiler to using the core
5414 name table instead of maintaining a local version. Added a new file,
5415 aslpredef.c. ACPICA BZ 832.
5417 Disassembler: Added support for the ACPI 4.0 MCHI table.
5419 ----------------------------------------
5420 21 January 2010. Summary of changes for version 20100121:
5422 1) ACPI CA Core Subsystem:
5424 Added the 2010 copyright to all module headers and signons. This affects
5425 virtually every file in the ACPICA core subsystem, the iASL compiler, the
5426 tools/utilities, and the test suites.
5428 Implemented a change to the AcpiGetDevices interface to eliminate
5430 invocations of the _STA method. In the case where a specific _HID is
5431 requested, do not run _STA until a _HID match is found. This eliminates
5432 potentially dozens of _STA calls during a search for a particular
5434 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
5436 Implemented an additional repair for predefined method return values.
5438 to repair unexpected NULL elements within returned Package objects.
5441 Integer of value zero, a NULL String, or a zero-length Buffer as
5443 ACPICA BZ 818. Lin Ming, Bob Moore.
5445 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
5447 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
5449 64-bit AML integers). It is now obsolete and this change removes it from
5451 ACPICA code base, replaced by UINT64. The original typedef has been
5453 for now for compatibility with existing device driver code. ACPICA BZ
5456 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
5458 the parse tree object.
5460 Added additional warning options for the gcc-4 generation. Updated the
5462 accordingly. This includes some code restructuring to eliminate
5464 code, elimination of some gotos, elimination of unused return values,
5466 additional casting, and removal of redundant declarations.
5468 Example Code and Data Size: These are the sizes for the OS-independent
5469 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5470 debug version of the code includes the debug output trace mechanism and
5472 much larger code and data size.
5475 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5476 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5478 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5479 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5481 2) iASL Compiler/Disassembler and Tools:
5483 No functional changes for this release.
5485 ----------------------------------------
5486 14 December 2009. Summary of changes for version 20091214:
5488 1) ACPI CA Core Subsystem:
5490 Enhanced automatic data type conversions for predefined name repairs.
5492 change expands the automatic repairs/conversions for predefined name
5494 values to make Integers, Strings, and Buffers fully interchangeable.
5497 Buffer can be converted to a Package of Integers if necessary. The
5499 module was completely restructured. Lin Ming, Bob Moore.
5501 Implemented automatic removal of null package elements during predefined
5503 repairs. This change will automatically remove embedded and trailing NULL
5504 package elements from returned package objects that are defined to
5507 variable number of sub-packages. The driver is then presented with a
5509 with no null elements to deal with. ACPICA BZ 819.
5511 Implemented a repair for the predefined _FDE and _GTM names. The expected
5512 return value for both names is a Buffer of 5 DWORDs. This repair fixes
5514 possible problems (both seen in the field), where a package of integers
5516 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
5519 Implemented additional module-level code support. This change will
5521 execute module-level code that is not at the root of the namespace (under
5523 Device object, etc.). Now executes the code within the current scope
5525 of the root. ACPICA BZ 762. Lin Ming.
5527 Fixed possible mutex acquisition errors when running _REG methods. Fixes
5529 problem where mutex errors can occur when running a _REG method that is
5531 the same scope as a method-defined operation region or an operation
5533 under a module-level IF block. This type of code is rare, so the problem
5535 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
5537 Fixed a possible memory leak during module-level code execution. An
5539 could be leaked for each block of executed module-level code if the
5540 interpreter slack mode is enabled This change deletes any implicitly
5542 object from the module-level code block. Lin Ming.
5544 Removed messages for successful predefined repair(s). The repair
5546 was considered too wordy. Now, messages are only unconditionally emitted
5548 the return object cannot be repaired. Existing messages for successful
5549 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
5552 Example Code and Data Size: These are the sizes for the OS-independent
5553 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5554 debug version of the code includes the debug output trace mechanism and
5556 much larger code and data size.
5559 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5560 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5562 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5563 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5565 2) iASL Compiler/Disassembler and Tools:
5567 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
5569 were no longer automatically removed at the termination of the compile.
5571 acpiexec: Implemented the -f option to specify default region fill value.
5572 This option specifies the value used to initialize buffers that simulate
5573 operation regions. Default value is zero. Useful for debugging problems
5575 depend on a specific initial value for a region or field.
5577 ----------------------------------------
5578 12 November 2009. Summary of changes for version 20091112:
5580 1) ACPI CA Core Subsystem:
5582 Implemented a post-order callback to AcpiWalkNamespace. The existing
5583 interface only has a pre-order callback. This change adds an additional
5584 parameter for a post-order callback which will be more useful for bus
5586 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
5588 Modified the behavior of the operation region memory mapping cache for
5589 SystemMemory. Ensure that the memory mappings created for operation
5591 do not cross 4K page boundaries. Crossing a page boundary while mapping
5592 regions can cause kernel warnings on some hosts if the pages have
5594 attributes. Such regions are probably BIOS bugs, and this is the
5596 Linux BZ 14445. Lin Ming.
5598 Implemented an automatic repair for predefined methods that must return
5599 sorted lists. This change will repair (by sorting) packages returned by
5601 _PSS, and _TSS. Drivers can now assume that the packages are correctly
5603 and do not contain NULL package elements. Adds one new file,
5604 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
5606 Fixed a possible fault during predefined name validation if a return
5608 object contains NULL elements. Also adds a warning if a NULL element is
5609 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
5611 include repair or removal of all such NULL elements where possible.
5613 Implemented additional module-level executable AML code support. This
5615 will execute module-level code that is not at the root of the namespace
5616 (under a Device object, etc.) at table load time. Module-level executable
5618 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
5620 Implemented a new internal function to create Integer objects. This
5622 simplifies miscellaneous object creation code. ACPICA BZ 823.
5624 Reduced the severity of predefined repair messages, Warning to Info.
5626 the object was successfully repaired, a warning is too severe. Reduced to
5628 info message for now. These messages may eventually be changed to debug-
5632 Example Code and Data Size: These are the sizes for the OS-independent
5633 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5634 debug version of the code includes the debug output trace mechanism and
5636 much larger code and data size.
5639 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5640 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5642 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5643 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5645 2) iASL Compiler/Disassembler and Tools:
5647 iASL: Implemented Switch() with While(1) so that Break works correctly.
5649 change correctly implements the Switch operator with a surrounding
5651 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
5653 iASL: Added a message if a package initializer list is shorter than
5655 length. Adds a new remark for a Package() declaration if an initializer
5657 exists, but is shorter than the declared length of the package. Although
5658 technically legal, this is probably a coding error and it is seen in the
5659 field. ACPICA BZ 815. Lin Ming, Bob Moore.
5661 iASL: Fixed a problem where the compiler could fault after the maximum
5663 of errors was reached (200).
5665 acpixtract: Fixed a possible warning for pointer cast if the compiler
5667 level set very high.
5669 ----------------------------------------
5670 13 October 2009. Summary of changes for version 20091013:
5672 1) ACPI CA Core Subsystem:
5674 Fixed a problem where an Operation Region _REG method could be executed
5676 than once. If a custom address space handler is installed by the host
5678 the "initialize operation regions" phase of the ACPICA initialization,
5680 _REG methods for that address space could be executed twice. This change
5681 fixes the problem. ACPICA BZ 427. Lin Ming.
5683 Fixed a possible memory leak for the Scope() ASL operator. When the exact
5684 invocation of "Scope(\)" is executed (change scope to root), one internal
5685 operand object was leaked. Lin Ming.
5687 Implemented a run-time repair for the _MAT predefined method. If the _MAT
5688 return value is defined as a Field object in the AML, and the field
5689 size is less than or equal to the default width of an integer (32 or
5691 can incorrectly return an Integer instead of a Buffer. ACPICA now
5692 automatically repairs this problem. ACPICA BZ 810.
5694 Implemented a run-time repair for the _BIF and _BIX predefined methods.
5696 "OEM Information" field is often incorrectly returned as an Integer with
5697 value zero if the field is not supported by the platform. This is due to
5699 ambiguity in the ACPI specification. The field should always be a string.
5700 ACPICA now automatically repairs this problem by returning a NULL string
5701 within the returned Package. ACPICA BZ 807.
5703 Example Code and Data Size: These are the sizes for the OS-independent
5704 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5705 debug version of the code includes the debug output trace mechanism and
5707 much larger code and data size.
5710 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5711 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5713 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5714 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5716 2) iASL Compiler/Disassembler and Tools:
5718 Disassembler: Fixed a problem where references to external symbols that
5719 contained one or more parent-prefixes (carats) were not handled
5721 possibly causing a fault. ACPICA BZ 806. Lin Ming.
5723 Disassembler: Restructured the code so that all functions that handle
5724 external symbols are in a single module. One new file is added,
5727 AML Debugger: Added a max count argument for the Batch command (which
5728 executes multiple predefined methods within the namespace.)
5730 iASL: Updated the compiler documentation (User Reference.) Available at
5731 http://www.acpica.org/documentation/. ACPICA BZ 750.
5733 AcpiXtract: Updated for Lint and other formatting changes. Close all open
5736 ----------------------------------------
5737 03 September 2009. Summary of changes for version 20090903:
5739 1) ACPI CA Core Subsystem:
5741 For Windows Vista compatibility, added the automatic execution of an _INI
5742 method located at the namespace root (\_INI). This method is executed at
5743 table load time. This support is in addition to the automatic execution
5745 \_SB._INI. Lin Ming.
5747 Fixed a possible memory leak in the interpreter for AML package objects
5749 the package initializer list is longer than the defined size of the
5751 This apparently can only happen if the BIOS changes the package size on
5753 fly (seen in a _PSS object), as ASL compilers do not allow this. The
5754 interpreter will truncate the package to the defined size (and issue an
5756 message), but previously could leave the extra objects undeleted if they
5758 pre-created during the argument processing (such is the case if the
5760 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
5762 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
5763 This has been reported in the field. Previously, ACPICA would zero out
5765 buffer/string. Now, the operation is treated as a noop. Provides Windows
5766 compatibility. ACPICA BZ 803. Lin Ming.
5768 Removed an extraneous error message for ASL constructs of the form
5769 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
5771 are seen in many BIOSs and are once again treated as NOOPs and no error
5773 emitted when they are encountered. ACPICA BZ 785.
5775 Fixed an extraneous warning message if a _DSM reserved method returns a
5776 Package object. _DSM can return any type of object, so validation on the
5777 return type cannot be performed. ACPICA BZ 802.
5779 Example Code and Data Size: These are the sizes for the OS-independent
5780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5781 debug version of the code includes the debug output trace mechanism and
5783 much larger code and data size.
5786 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5787 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5789 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5790 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5792 2) iASL Compiler/Disassembler and Tools:
5794 iASL: Fixed a problem with the use of the Alias operator and Resource
5795 Templates. The correct alias is now constructed and no error is emitted.
5798 iASL: Implemented the -I option to specify additional search directories
5800 include files. Allows multiple additional search paths for include files.
5801 Directories are searched in the order specified on the command line
5803 the local directory is searched.) ACPICA BZ 800.
5805 iASL: Fixed a problem where the full pathname for include files was not
5806 emitted for warnings/errors. This caused the IDE support to not work
5807 properly. ACPICA BZ 765.
5809 iASL: Implemented the -@ option to specify a Windows-style response file
5810 containing additional command line options. ACPICA BZ 801.
5812 AcpiExec: Added support to load multiple AML files simultaneously (such
5815 DSDT and multiple SSDTs). Also added support for wildcards within the AML
5816 pathname. These features allow all machine tables to be easily loaded and
5817 debugged together. ACPICA BZ 804.
5819 Disassembler: Added missing support for disassembly of HEST table Error
5823 ----------------------------------------
5824 30 July 2009. Summary of changes for version 20090730:
5826 The ACPI 4.0 implementation for ACPICA is complete with this release.
5828 1) ACPI CA Core Subsystem:
5830 ACPI 4.0: Added header file support for all new and changed ACPI tables.
5831 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
5833 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
5835 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
5837 have been some ACPI 4.0 changes to other existing tables. Split the large
5838 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
5840 ACPI 4.0: Implemented predefined name validation for all new names. There
5842 31 new names in ACPI 4.0. The predefined validation module was split into
5844 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
5846 Implemented support for so-called "module-level executable code". This is
5847 executable AML code that exists outside of any control method and is
5849 to be executed at table load time. Although illegal since ACPI 2.0, this
5851 of code still exists and is apparently still being created. Blocks of
5853 code are now detected and executed as intended. Currently, the code
5855 must exist under either an If, Else, or While construct; these are the
5856 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
5858 Implemented an automatic dynamic repair for predefined names that return
5859 nested Package objects. This applies to predefined names that are defined
5861 return a variable-length Package of sub-packages. If the number of sub-
5862 packages is one, BIOS code is occasionally seen that creates a simple
5864 package with no sub-packages. This code attempts to fix the problem by
5865 wrapping a new package object around the existing package. These methods
5867 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
5871 Fixed a regression introduced in 20090625 for the AcpiGetDevices
5873 The _HID/_CID matching was broken and no longer matched IDs correctly.
5877 Fixed a problem with AcpiReset where the reset would silently fail if the
5878 register was one of the protected I/O ports. AcpiReset now bypasses the
5880 validation mechanism. This may eventually be driven into the
5884 Fixed a regression related to the recent update of the AcpiRead/Write
5885 interfaces. A sleep/suspend could fail if the optional PM2 Control
5887 does not exist during an attempt to write the Bus Master Arbitration bit.
5888 (However, some hosts already delete the code that writes this bit, and
5890 code may in fact be obsolete at this date.) ACPICA BZ 799.
5892 Fixed a problem where AcpiTerminate could fault if inadvertently called
5894 in succession. ACPICA BZ 795.
5896 Example Code and Data Size: These are the sizes for the OS-independent
5897 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5898 debug version of the code includes the debug output trace mechanism and
5900 much larger code and data size.
5903 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5904 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5906 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5907 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5909 2) iASL Compiler/Disassembler and Tools:
5911 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
5912 changes to existing tables. ACPICA BZ 775.
5914 ----------------------------------------
5915 25 June 2009. Summary of changes for version 20090625:
5917 The ACPI 4.0 Specification was released on June 16 and is available at
5918 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
5919 continue for the next few releases.
5921 1) ACPI CA Core Subsystem:
5923 ACPI 4.0: Implemented interpreter support for the IPMI operation region
5924 address space. Includes support for bi-directional data buffers and an
5926 address space handler (to be installed by an IPMI device driver.) ACPICA
5930 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
5932 support in both the header files and the disassembler.
5934 Completed a major update for the AcpiGetObjectInfo external interface.
5936 - Support for variable, unlimited length HID, UID, and CID strings.
5937 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
5939 - Call the _SxW power methods on behalf of a device object.
5940 - Determine if a device is a PCI root bridge.
5941 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
5942 These changes will require an update to all callers of this interface.
5944 the updated ACPICA Programmer Reference for details. One new source file
5946 been added - utilities/utids.c. ACPICA BZ 368, 780.
5948 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
5949 transfers. The Value parameter has been extended from 32 bits to 64 bits
5951 order to support new ACPI 4.0 tables. These changes will require an
5954 all callers of these interfaces. See the ACPICA Programmer Reference for
5955 details. ACPICA BZ 768.
5957 Fixed several problems with AcpiAttachData. The handler was not invoked
5959 the host node was deleted. The data sub-object was not automatically
5961 when the host node was deleted. The interface to the handler had an
5963 parameter, this was removed. ACPICA BZ 778.
5965 Enhanced the function that dumps ACPI table headers. All non-printable
5966 characters in the string fields are now replaced with '?' (Signature,
5968 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
5969 these fields are occasionally seen in the field. ACPICA BZ 788.
5971 Fixed a problem with predefined method repair code where the code that
5972 attempts to repair/convert an object of incorrect type is only executed
5974 the first time the predefined method is called. The mechanism that
5976 warnings on subsequent calls was interfering with the repair mechanism.
5979 Fixed a possible memory leak in the predefined validation/repair code
5982 buffer is automatically converted to an expected string object.
5984 Removed obsolete 16-bit files from the distribution and from the current
5986 tree head. ACPICA BZ 776.
5988 Example Code and Data Size: These are the sizes for the OS-independent
5989 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5990 debug version of the code includes the debug output trace mechanism and
5992 much larger code and data size.
5995 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5996 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5998 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5999 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6001 2) iASL Compiler/Disassembler and Tools:
6003 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6004 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6006 ACPI 4.0: iASL - implemented compile-time validation support for all new
6007 predefined names and control methods (31 total). ACPICA BZ 769.
6009 ----------------------------------------
6010 21 May 2009. Summary of changes for version 20090521:
6012 1) ACPI CA Core Subsystem:
6014 Disabled the preservation of the SCI enable bit in the PM1 control
6016 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6019 a "preserved" bit - "OSPM always preserves this bit position", section
6020 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6021 because the bit needs to be explicitly set by the OS as a workaround. No
6022 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6023 attempts to preserve this bit.
6025 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6026 incorrectly formed _PRT package could cause a fault. Added validation to
6027 ensure that each package element is actually a sub-package.
6029 Implemented a new interface to install or override a single control
6031 AcpiInstallMethod. This interface is useful when debugging in order to
6033 an existing method or to install a missing method without having to
6035 the entire ACPI table. See the ACPICA Programmer Reference for use and
6036 examples. Lin Ming, Bob Moore.
6038 Fixed several reference count issues with the DdbHandle object that is
6039 created from a Load or LoadTable operator. Prevent premature deletion of
6041 object. Also, mark the object as invalid once the table has been
6043 This is needed because the handle itself may not be deleted after the
6045 unload, depending on whether it has been stored in a named object by the
6048 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6049 mutexes of the same sync level are acquired but then not released in
6051 opposite order, the internally maintained Current Sync Level becomes
6053 and can cause subsequent execution errors. ACPICA BZ 471.
6055 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6056 specification has been changed to make the SyncLevel for mutex objects
6058 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6060 same as the current sync level. This makes more sense than the previous
6062 (SyncLevel less than or equal). This change updates the code to match the
6065 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6067 (local) cache must be locked during all cache object deletions. Andrew
6070 Updated the Load operator to use operation region interfaces. This
6072 direct memory mapping with region access calls. Now, all region accesses
6074 through the installed region handler as they should.
6076 Simplified and optimized the NsGetNextNode function. Reduced parameter
6078 and reduced code for this frequently used function.
6080 Example Code and Data Size: These are the sizes for the OS-independent
6081 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6082 debug version of the code includes the debug output trace mechanism and
6084 much larger code and data size.
6087 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6088 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6090 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6091 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6093 2) iASL Compiler/Disassembler and Tools:
6095 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6097 with sub-table disassembly and handling invalid sub-tables. Attempt
6099 after an invalid sub-table ID.
6101 ----------------------------------------
6102 22 April 2009. Summary of changes for version 20090422:
6104 1) ACPI CA Core Subsystem:
6106 Fixed a compatibility issue with the recently released I/O port
6108 mechanism. For windows compatibility, 1) On a port protection violation,
6109 simply ignore the request and do not return an exception (allow the
6111 method to continue execution.) 2) If only part of the request overlaps a
6112 protected port, read/write the individual ports that are not protected.
6116 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6118 breaks into the AML debugger if the debugger is present. This matches the
6119 ACPI-defined behavior.
6121 Fixed several possible warnings related to the use of the configurable
6122 ACPI_THREAD_ID. This type can now be configured as either an integer or a
6123 pointer with no warnings. Also fixes several warnings in printf-like
6124 statements for the 64-bit build when the type is configured as a pointer.
6127 Fixed a number of possible warnings when compiling with gcc 4+ (depending
6129 warning options.) Examples include printf formats, aliasing, unused
6131 missing prototypes, missing switch default statements, use of non-ANSI
6132 library functions, use of non-ANSI constructs. See generate/unix/Makefile
6134 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
6136 Example Code and Data Size: These are the sizes for the OS-independent
6137 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6138 debug version of the code includes the debug output trace mechanism and
6140 much larger code and data size.
6143 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6144 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6146 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6147 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6149 2) iASL Compiler/Disassembler and Tools:
6151 iASL: Fixed a generation warning from Bison 2.3 and fixed several
6156 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
6158 correctly digest Windows/DOS formatted files (with CR/LF).
6160 iASL: Added a new option for "quiet mode" (-va) that produces only the
6161 compilation summary, not individual errors and warnings. Useful for large
6164 AcpiExec: Implemented a new option (-z) to enable a forced
6166 timeout that can be used to detect hang conditions during execution of
6168 code (includes both internal semaphores and AML-defined mutexes and
6171 Added new makefiles for the generation of acpica in a generic unix-like
6172 environment. These makefiles are intended to generate the acpica tools
6174 utilities from the original acpica git source tree structure.
6176 Test Suites: Updated and cleaned up the documentation files. Updated the
6177 copyrights to 2009, affecting all source files. Use the new version of
6179 with quiet mode. Increased the number of available semaphores in the
6181 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
6183 an alternate implementation of the semaphore timeout to allow aslts to
6184 execute fully on Cygwin.
6186 ----------------------------------------
6187 20 March 2009. Summary of changes for version 20090320:
6189 1) ACPI CA Core Subsystem:
6191 Fixed a possible race condition between AcpiWalkNamespace and dynamic
6193 unloads. Added a reader/writer locking mechanism to allow multiple
6195 namespace walks (readers), but block a dynamic table unload until it can
6197 exclusive write access to the namespace. This fixes a problem where a
6199 unload could (possibly catastrophically) delete the portion of the
6201 that is currently being examined by a walk. Adds a new file, utlock.c,
6203 implements the reader/writer lock mechanism. ACPICA BZ 749.
6205 Fixed a regression introduced in version 20090220 where a change to the
6207 handling could cause the ACPICA subsystem to access non-existent I/O
6210 Modified the handling of FADT register and table (FACS/DSDT) addresses.
6212 FADT can contain both 32-bit and 64-bit versions of these addresses.
6213 Previously, the 64-bit versions were favored, meaning that if both 32 and
6215 versions were valid, but not equal, the 64-bit version was used. This was
6216 found to cause some machines to fail. Now, in this case, the 32-bit
6218 is used instead. This now matches the Windows behavior.
6220 Implemented a new mechanism to protect certain I/O ports. Provides
6222 compatibility and protects the standard PC I/O ports from access via AML
6223 code. Adds a new file, hwvalid.c
6225 Fixed a possible extraneous warning message from the FADT support. The
6226 message warns of a 32/64 length mismatch between the legacy and GAS
6227 definitions for a register.
6229 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
6231 made obsolete by the port protection mechanism above. It was previously
6233 to validate the entire address range of an operation region, which could
6235 incorrect if the range included illegal ports, but fields within the
6236 operation region did not actually access those ports. Validation is now
6237 performed on a per-field basis instead of the entire region.
6239 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
6240 Ignored bits must be "preserved" according to the ACPI spec. Usually,
6242 means a read/modify/write when writing to the register. However, for
6244 registers, writing a one means clear the event. Writing a zero means
6246 the event (do not clear.) This behavior is clarified in the ACPI 4.0
6248 and the ACPICA code now simply always writes a zero to the ignored bit.
6250 Modified the handling of ignored bits for the PM1 A/B Control Registers.
6252 per the ACPI specification, for the control registers, preserve
6253 (read/modify/write) all bits that are defined as either reserved or
6256 Updated the handling of write-only bits in the PM1 A/B Control Registers.
6257 When reading the register, zero the write-only bits as per the ACPI spec.
6258 ACPICA BZ 443. Lin Ming.
6260 Removed "Linux" from the list of supported _OSI strings. Linux no longer
6261 wants to reply true to this request. The Windows strings are the only
6263 through the AML that are tested and known to work properly.
6266 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6267 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6269 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6270 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6272 2) iASL Compiler/Disassembler and Tools:
6274 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
6278 ----------------------------------------
6279 20 February 2009. Summary of changes for version 20090220:
6281 1) ACPI CA Core Subsystem:
6283 Optimized the ACPI register locking. Removed locking for reads from the
6285 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
6287 not required when reading the single-bit registers. The
6288 AcpiGetRegisterUnlocked function is no longer needed and has been
6290 This will improve performance for reads on these registers. ACPICA BZ
6293 Fixed the parameter validation for AcpiRead/Write. Now return
6294 AE_BAD_PARAMETER if the input register pointer is null, and
6297 the register has an address of zero. Previously, these cases simply
6299 AE_OK. For optional registers such as PM1B status/enable/control, the
6301 should check for a valid register address before calling. ACPICA BZ 748.
6303 Renamed the external ACPI bit register access functions. Renamed
6304 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
6305 functions. The new names are AcpiReadBitRegister and
6306 AcpiWriteBitRegister.
6307 Also, restructured the code for these functions by simplifying the code
6309 and condensing duplicate code to reduce code size.
6311 Added new functions to transparently handle the possibly split PM1 A/B
6312 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
6314 now handle the split registers for PM1 Status, Enable, and Control.
6319 Added a function to handle the PM1 control registers,
6320 AcpiHwWritePm1Control.
6321 This function writes both of the PM1 control registers (A/B). These
6323 are different than the PM1 A/B status and enable registers in that
6325 values can be written to the A/B registers. Most notably, the SLP_TYP
6327 can be different, as per the values returned from the _Sx predefined
6330 Removed an extra register write within AcpiHwClearAcpiStatus. This
6332 was writing an optional PM1B status register twice. The existing call to
6334 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
6336 register. ACPICA BZ 751.
6338 Split out the PM1 Status registers from the FADT. Added new globals for
6340 registers (A/B), similar to the way the PM1 Enable registers are handled.
6341 Instead of overloading the FADT Event Register blocks. This makes the
6343 clearer and less prone to error.
6345 Fixed the warning message for when the platform contains too many ACPI
6347 for the default size of the global root table data structure. The
6349 for the truncation value was incorrect.
6351 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
6352 obsolete macro, since it is now a simple reference to ->common.type.
6354 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
6356 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
6357 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
6358 simply SLEEP_TYPE. ACPICA BZ 754.
6360 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
6361 function is only needed on 64-bit host operating systems and is thus not
6362 included for 32-bit hosts.
6364 Debug output: print the input and result for invocations of the _OSI
6366 control method via the ACPI_LV_INFO debug level. Also, reduced some of
6368 verbosity of this debug level. Len Brown.
6370 Example Code and Data Size: These are the sizes for the OS-independent
6371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6372 debug version of the code includes the debug output trace mechanism and
6374 much larger code and data size.
6377 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6378 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6380 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6381 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6383 2) iASL Compiler/Disassembler and Tools:
6385 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
6386 various legal performance profiles.
6388 ----------------------------------------
6389 23 January 2009. Summary of changes for version 20090123:
6391 1) ACPI CA Core Subsystem:
6393 Added the 2009 copyright to all module headers and signons. This affects
6394 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6395 the tools/utilities.
6397 Implemented a change to allow the host to override any ACPI table,
6399 dynamically loaded tables. Previously, only the DSDT could be replaced by
6401 host. With this change, the AcpiOsTableOverride interface is called for
6403 table found in the RSDT/XSDT during ACPICA initialization, and also
6405 a table is dynamically loaded via the AML Load operator.
6407 Updated FADT flag definitions, especially the Boot Architecture flags.
6409 Debugger: For the Find command, automatically pad the input ACPI name
6411 underscores if the name is shorter than 4 characters. This enables a
6413 with the actual namespace entry which is itself padded with underscores.
6415 Example Code and Data Size: These are the sizes for the OS-independent
6416 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6417 debug version of the code includes the debug output trace mechanism and
6419 much larger code and data size.
6422 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6423 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6425 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6426 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6428 2) iASL Compiler/Disassembler and Tools:
6430 Fix build error under Bison-2.4.
6432 Dissasembler: Enhanced FADT support. Added decoding of the Boot
6434 flags. Now decode all flags, regardless of the FADT version. Flag output
6435 includes the FADT version which first defined each flag.
6437 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
6439 DSDT). Windows only.
6441 ----------------------------------------
6442 04 December 2008. Summary of changes for version 20081204:
6444 1) ACPI CA Core Subsystem:
6446 The ACPICA Programmer Reference has been completely updated and revamped
6448 this release. This includes updates to the external interfaces, OSL
6449 interfaces, the overview sections, and the debugger reference.
6451 Several new ACPICA interfaces have been implemented and documented in the
6452 programmer reference:
6453 AcpiReset - Writes the reset value to the FADT-defined reset register.
6454 AcpiDisableAllGpes - Disable all available GPEs.
6455 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
6456 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
6457 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
6458 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
6459 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
6461 Most of the public ACPI hardware-related interfaces have been moved to a
6463 file, components/hardware/hwxface.c
6465 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
6466 register lengths within the FADT are now used, and the low level ACPI
6467 register access no longer hardcodes the ACPI register lengths. Given that
6468 there may be some risk in actually trusting the FADT register lengths, a
6470 time option was added to fall back to the default hardcoded lengths if
6472 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
6473 option is set to true for now, and a warning is issued if a suspicious
6475 register length is overridden with the default value.
6477 Fixed a reference count issue in NsRepairObject. This problem was
6479 in version 20081031 as part of a fix to repair Buffer objects within
6482 Added semaphore support to the Linux/Unix application OS-services layer
6483 (OSL). ACPICA BZ 448. Lin Ming.
6485 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
6487 be implemented in the OSL, or will binary semaphores be used instead.
6489 Example Code and Data Size: These are the sizes for the OS-independent
6490 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6491 debug version of the code includes the debug output trace mechanism and
6493 much larger code and data size.
6496 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6497 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6499 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6500 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6502 2) iASL Compiler/Disassembler and Tools:
6504 iASL: Completed the '-e' option to include additional ACPI tables in
6507 aid with disassembly and External statement generation. ACPICA BZ 742.
6511 iASL: Removed the "named object in while loop" error. The compiler cannot
6512 determine how many times a loop will execute. ACPICA BZ 730.
6514 Disassembler: Implemented support for FADT revision 2 (MS extension).
6518 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
6521 ----------------------------------------
6522 31 October 2008. Summary of changes for version 20081031:
6524 1) ACPI CA Core Subsystem:
6526 Restructured the ACPICA header files into public/private. acpi.h now
6528 only the "public" acpica headers. All other acpica headers are "private"
6530 should not be included by acpica users. One new file, accommon.h is used
6532 include the commonly used private headers for acpica code generation.
6534 plans include moving all private headers to a new subdirectory.
6536 Implemented an automatic Buffer->String return value conversion for
6537 predefined ACPI methods. For these methods (such as _BIF), added
6539 conversion for return objects that are required to be a String, but a
6541 was found instead. This can happen when reading string battery data from
6543 operation region, because it used to be difficult to convert the data
6545 buffer to string from within the ASL. Ensures that the host OS is
6547 with a valid null-terminated string. Linux BZ 11822.
6549 Updated the FACS waking vector interfaces. Split
6550 AcpiSetFirmwareWakingVector
6551 into two: one for the 32-bit vector, another for the 64-bit vector. This
6553 required because the host OS must setup the wake much differently for
6555 vector (real vs. protected mode, etc.) and the interface itself should
6558 deciding which vector to use. Also, eliminated the
6559 GetFirmwareWakingVector
6560 interface, as it served no purpose (only the firmware reads the vector,
6562 only writes the vector.) ACPICA BZ 731.
6564 Implemented a mechanism to escape infinite AML While() loops. Added a
6566 counter to force exit from AML While loops if the count becomes too
6568 This can occur in poorly written AML when the hardware does not respond
6569 within a while loop and the loop does not implement a timeout. The
6571 loop count is configurable. A new exception code is returned when a loop
6573 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
6575 Optimized the execution of AML While loops. Previously, a control state
6576 object was allocated and freed for each execution of the loop. The
6577 optimization is to simply reuse the control state for each iteration.
6579 speeds up the raw loop execution time by about 5%.
6581 Enhanced the implicit return mechanism. For Windows compatibility, return
6583 implicit integer of value zero for methods that contain no executable
6585 Such methods are seen in the field as stubs (presumably), and can cause
6586 drivers to fail if they expect a return value. Lin Ming.
6588 Allow multiple backslashes as root prefixes in namepaths. In a fully
6589 qualified namepath, allow multiple backslash prefixes. This can happen
6591 is seen in the field) because of the use of a double-backslash in strings
6592 (since backslash is the escape character) causing confusion. ACPICA BZ
6596 Emit a warning if two different FACS or DSDT tables are discovered in the
6597 FADT. Checks if there are two valid but different addresses for the FACS
6599 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
6601 Consolidated the method argument count validation code. Merged the code
6603 validates control method argument counts into the predefined validation
6604 module. Eliminates possible multiple warnings for incorrect argument
6607 Implemented ACPICA example code. Includes code for ACPICA initialization,
6608 handler installation, and calling a control method. Available at
6609 source/tools/examples.
6611 Added a global pointer for FACS table to simplify internal FACS access.
6613 the global pointer instead of using AcpiGetTableByIndex for each FACS
6615 This simplifies the code for the Global Lock and the Firmware Waking
6618 Example Code and Data Size: These are the sizes for the OS-independent
6619 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6620 debug version of the code includes the debug output trace mechanism and
6622 much larger code and data size.
6625 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6626 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6628 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6629 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6631 2) iASL Compiler/Disassembler and Tools:
6633 iASL: Improved disassembly of external method calls. Added the -e option
6635 allow the inclusion of additional ACPI tables to help with the
6638 method invocations and the generation of external declarations during the
6639 disassembly. Certain external method invocations cannot be disassembled
6640 properly without the actual declaration of the method. Use the -e option
6642 include the table where the external method(s) are actually declared.
6644 useful for disassembling SSDTs that make method calls back to the master
6645 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
6647 -e dsdt.aml ssdt1.aml
6649 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
6650 problem where the use of an alias within a namepath would result in a not
6651 found error or cause the compiler to fault. Also now allows forward
6652 references from the Alias operator itself. ACPICA BZ 738.
6654 ----------------------------------------
6655 26 September 2008. Summary of changes for version 20080926:
6657 1) ACPI CA Core Subsystem:
6659 Designed and implemented a mechanism to validate predefined ACPI methods
6661 objects. This code validates the predefined ACPI objects (objects whose
6663 start with underscore) that appear in the namespace, at the time they are
6664 evaluated. The argument count and the type of the returned object are
6665 validated against the ACPI specification. The purpose of this validation
6667 to detect problems with the BIOS-implemented predefined ACPI objects
6669 the results are returned to the ACPI-related drivers. Future enhancements
6671 include actual repair of incorrect return objects where possible. Two new
6672 files are nspredef.c and acpredef.h.
6674 Fixed a fault in the AML parser if a memory allocation fails during the
6676 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
6678 Fixed an issue with implicit return compatibility. This change improves
6680 implicit return mechanism to be more compatible with the MS interpreter.
6682 Ming, ACPICA BZ 349.
6684 Implemented support for zero-length buffer-to-string conversions. Allow
6686 length strings during interpreter buffer-to-string conversions. For
6688 during the ToDecimalString and ToHexString operators, as well as implicit
6689 conversions. Fiodor Suietov, ACPICA BZ 585.
6691 Fixed two possible memory leaks in the error exit paths of
6692 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
6694 similar in that they use a stack of state objects in order to eliminate
6695 recursion. The stack must be fully unwound and deallocated if an error
6696 occurs. Lin Ming. ACPICA BZ 383.
6698 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
6700 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
6701 Moore ACPICA BZ 442.
6703 Removed the obsolete version number in module headers. Removed the
6704 "$Revision" number that appeared in each module header. This version
6706 was useful under SourceSafe and CVS, but has no meaning under git. It is
6708 only incorrect, it could also be misleading.
6710 Example Code and Data Size: These are the sizes for the OS-independent
6711 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6712 debug version of the code includes the debug output trace mechanism and
6714 much larger code and data size.
6717 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6718 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6720 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6721 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6723 ----------------------------------------
6724 29 August 2008. Summary of changes for version 20080829:
6726 1) ACPI CA Core Subsystem:
6728 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
6729 Reference. Changes include the elimination of cheating on the Object
6731 for the DdbHandle subtype, addition of a reference class field to
6732 differentiate the various reference types (instead of an AML opcode), and
6734 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
6736 Reduce an error to a warning for an incorrect method argument count.
6737 Previously aborted with an error if too few arguments were passed to a
6738 control method via the external ACPICA interface. Now issue a warning
6740 and continue. Handles the case where the method inadvertently declares
6742 many arguments, but does not actually use the extra ones. Applies mainly
6744 the predefined methods. Lin Ming. Linux BZ 11032.
6746 Disallow the evaluation of named object types with no intrinsic value.
6748 AE_TYPE for objects that have no value and therefore evaluation is
6750 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
6752 these types were allowed, but an exception would be generated at some
6754 during the evaluation. Now, the error is generated up front.
6756 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
6757 (nsnames.c). Fixes a leak in the error exit path.
6759 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
6761 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
6763 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
6766 Removed obsolete and/or unused exception codes from the acexcep.h header.
6767 There is the possibility that certain device drivers may be affected if
6769 use any of these exceptions.
6771 The ACPICA documentation has been added to the public git source tree,
6773 acpica/documents. Included are the ACPICA programmer reference, the iASL
6774 compiler reference, and the changes.txt release logfile.
6776 Example Code and Data Size: These are the sizes for the OS-independent
6777 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6778 debug version of the code includes the debug output trace mechanism and
6780 much larger code and data size.
6783 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6784 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6786 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6787 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6789 2) iASL Compiler/Disassembler and Tools:
6791 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
6792 defines _SCP with 3 arguments. Previous versions defined it with only 1
6793 argument. iASL now allows both definitions.
6795 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
6797 length subtables when disassembling ACPI tables. Also fixed a couple of
6798 errors where a full 16-bit table type field was not extracted from the
6802 acpisrc: Improve comment counting mechanism for generating source code
6803 statistics. Count first and last lines of multi-line comments as
6805 not comment lines. Handle Linux legal header in addition to standard
6809 ----------------------------------------
6811 29 July 2008. Summary of changes for version 20080729:
6813 1) ACPI CA Core Subsystem:
6815 Fix a possible deadlock in the GPE dispatch. Remove call to
6816 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
6818 to acquire the GPE lock but can deadlock since the GPE lock is already
6820 at dispatch time. This code was introduced in version 20060831 as a
6822 to Linux BZ 6881 and has since been removed from Linux.
6824 Add a function to dereference returned reference objects. Examines the
6826 object from a call to AcpiEvaluateObject. Any Index or RefOf references
6828 automatically dereferenced in an attempt to return something useful
6830 reference types cannot be converted into an external ACPI_OBJECT.)
6832 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
6834 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
6835 subtables for the MADT and one new subtable for the SRAT. Includes
6836 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
6838 Specification, June 2008.
6840 Additional error checking for pathname utilities. Add error check after
6842 calls to AcpiNsGetPathnameLength. Add status return from
6843 AcpiNsBuildExternalPath and check after all calls. Add parameter
6845 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
6847 Return status from the global init function AcpiUtGlobalInitialize. This
6849 used by both the kernel subsystem and the utilities such as iASL
6851 The function could possibly fail when the caches are initialized. Yang
6854 Add a function to decode reference object types to strings. Created for
6855 improved error messages.
6857 Improve object conversion error messages. Better error messages during
6859 conversion from internal to the external ACPI_OBJECT. Used for external
6861 to AcpiEvaluateObject.
6863 Example Code and Data Size: These are the sizes for the OS-independent
6864 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6865 debug version of the code includes the debug output trace mechanism and
6867 much larger code and data size.
6870 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6871 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6873 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6874 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6876 2) iASL Compiler/Disassembler and Tools:
6878 Debugger: fix a possible hang when evaluating non-methods. Fixes a
6880 introduced in version 20080701. If the object being evaluated (via
6882 command) is not a method, the debugger can hang while trying to obtain
6884 existent parameters.
6886 iASL: relax error for using reserved "_T_x" identifiers. These names can
6887 appear in a disassembled ASL file if they were emitted by the original
6888 compiler. Instead of issuing an error or warning and forcing the user to
6889 manually change these names, issue a remark instead.
6891 iASL: error if named object created in while loop. Emit an error if any
6893 object is created within a While loop. If allowed, this code will
6896 run-time error on the second iteration of the loop when an attempt is
6899 create the same named object twice. ACPICA bugzilla 730.
6901 iASL: Support absolute pathnames for include files. Add support for
6903 pathnames within the Include operator. previously, only relative
6907 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
6909 The ACPI spec requires one interrupt minimum. BZ 423
6911 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
6912 Handles the case for the Interrupt Resource Descriptor where
6913 the ResourceSource argument is omitted but ResourceSourceIndex
6914 is present. Now leave room for the Index. BZ 426
6916 iASL: Prevent error message if CondRefOf target does not exist. Fixes
6918 where an error message is emitted if the target does not exist. BZ 516
6920 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
6921 (get ACPI tables on Windows). This was apparently broken in version
6924 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
6926 the EOF happens immediately after the last table in the input file. Print
6927 completion message. Previously, no message was displayed in this case.
6929 ----------------------------------------
6930 01 July 2008. Summary of changes for version 20080701:
6932 0) Git source tree / acpica.org
6934 Fixed a problem where a git-clone from http would not transfer the entire
6937 1) ACPI CA Core Subsystem:
6939 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
6940 enable bit. Now performs a read-change-write of the enable register
6942 of simply writing out the cached enable mask. This will prevent
6944 enabling of GPEs if a rogue GPE is received during initialization (before
6946 handlers are installed.)
6948 Implemented a copy for dynamically loaded tables. Previously, dynamically
6949 loaded tables were simply mapped - but on some machines this memory is
6950 corrupted after suspend. Now copy the table to a local buffer. For the
6951 OpRegion case, added checksum verify. Use the table length from the table
6952 header, not the region length. For the Buffer case, use the table length
6953 also. Dennis Noordsij, Bob Moore. BZ 10734
6955 Fixed a problem where the same ACPI table could not be dynamically loaded
6957 unloaded more than once. Without this change, a table cannot be loaded
6959 once it has been loaded/unloaded one time. The current mechanism does not
6960 unregister a table upon an unload. During a load, if the same table is
6962 this no longer returns an exception. BZ 722
6964 Fixed a problem where the wrong descriptor length was calculated for the
6965 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
6967 are calculated as 12 bytes long, but the actual length in the internal
6968 descriptor is 16 because of the round-up to 8 on the 64-bit build.
6970 by Linn Crosetto. BZ 728
6972 Fixed a possible memory leak in the Unload operator. The DdbHandle
6974 by Load() did not have its reference count decremented during unload,
6976 to a memory leak. Lin Ming. BZ 727
6978 Fixed a possible memory leak when deleting thermal/processor objects. Any
6979 associated notify handlers (and objects) were not being deleted. Fiodor
6982 Fixed the ordering of the ASCII names in the global mutex table to match
6984 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
6986 Vegard Nossum. BZ 726
6988 Enhanced the AcpiGetObjectInfo interface to return the number of required
6989 arguments if the object is a control method. Added this call to the
6991 so the proper number of default arguments are passed to a method. This
6992 prevents a warning when executing methods from AcpiExec.
6994 Added a check for an invalid handle in AcpiGetObjectInfo. Return
6995 AE_BAD_PARAMETER if input handle is invalid. BZ 474
6997 Fixed an extraneous warning from exconfig.c on the 64-bit build.
6999 Example Code and Data Size: These are the sizes for the OS-independent
7000 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7001 debug version of the code includes the debug output trace mechanism and
7003 much larger code and data size.
7006 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7007 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7009 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7010 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7012 2) iASL Compiler/Disassembler and Tools:
7014 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7015 resource descriptor names.
7017 iASL: Detect invalid ASCII characters in input (windows version). Removed
7019 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7020 characters in the input. BZ 441
7022 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7024 "result of operation not used" warning when the DDB handle returned from
7025 LoadTable is not used. The warning is not needed. BZ 590
7027 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7030 pass address of table to the AML. Added option to disable OpRegion
7032 to allow creation of an OpRegion with a real address that was passed to
7034 All of this allows testing of the Load and Unload operators from
7037 Debugger: update tables command for unloaded tables. Handle unloaded
7039 and use the standard table header output routine.
7041 ----------------------------------------
7042 09 June 2008. Summary of changes for version 20080609:
7044 1) ACPI CA Core Subsystem:
7046 Implemented a workaround for reversed _PRT entries. A significant number
7048 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7049 change dynamically detects and repairs this problem. Provides
7051 with MS ACPI. BZ 6859
7053 Simplified the internal ACPI hardware interfaces to eliminate the locking
7054 flag parameter from Register Read/Write. Added a new external interface,
7055 AcpiGetRegisterUnlocked.
7057 Fixed a problem where the invocation of a GPE control method could hang.
7059 was a regression introduced in 20080514. The new method argument count
7060 validation mechanism can enter an infinite loop when a GPE method is
7061 dispatched. Problem fixed by removing the obsolete code that passed GPE
7063 information to the notify handler via the control method parameter
7066 Fixed a problem where the _SST execution status was incorrectly returned
7068 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7070 20080514. _SST is optional and a NOT_FOUND exception should never be
7073 Fixed a problem where a deleted object could be accessed from within the
7075 parser. This was a regression introduced in version 20080123 as a fix for
7077 Unload operator. Lin Ming. BZ 10669
7079 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7081 and eliminated the use of a negative index in a loop. Operands are now
7082 displayed in the correct order, not backwards. This also fixes a
7084 introduced in 20080514 on 64-bit systems where the elimination of
7085 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7088 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7090 path did not delete a locally allocated structure.
7092 Updated definitions for the DMAR and SRAT tables to synchronize with the
7093 current specifications. Includes disassembler support.
7095 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7096 loop termination value was used. Loop terminated on iteration early,
7098 one mutex. Linn Crosetto
7100 Example Code and Data Size: These are the sizes for the OS-independent
7101 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7102 debug version of the code includes the debug output trace mechanism and
7104 much larger code and data size.
7107 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7108 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7110 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7111 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7113 2) iASL Compiler/Disassembler and Tools:
7115 Disassembler: Implemented support for EisaId() within _CID objects. Now
7116 disassemble integer _CID objects back to EisaId invocations, including
7117 multiple integers within _CID packages. Includes single-step support for
7120 Disassembler: Added support for DMAR and SRAT table definition changes.
7122 ----------------------------------------
7123 14 May 2008. Summary of changes for version 20080514:
7125 1) ACPI CA Core Subsystem:
7127 Fixed a problem where GPEs were enabled too early during the ACPICA
7128 initialization. This could lead to "handler not installed" errors on some
7129 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
7131 ensures that all operation regions and devices throughout the namespace
7133 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
7135 Implemented a change to the enter sleep code. Moved execution of the _GTS
7136 method to just before setting sleep enable bit. The execution was moved
7138 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
7139 immediately before the SLP_EN bit is set, as per the ACPI specification.
7142 Implemented a fix to disable unknown GPEs (2nd version). Now always
7144 the GPE, even if ACPICA thinks that that it is already disabled. It is
7145 possible that the AML or some other code has enabled the GPE unbeknownst
7149 Fixed a problem with the Field operator where zero-length fields would
7151 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
7153 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
7155 Implemented a fix for the Load operator, now load the table at the
7157 root. This reverts a change introduced in version 20071019. The table is
7159 loaded at the namespace root even though this goes against the ACPI
7160 specification. This provides compatibility with other ACPI
7162 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
7165 Fixed a problem where ACPICA would not Load() tables with unusual
7167 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
7168 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
7169 Therefore, signature validation is worthless. Apparently MS ACPI accepts
7171 signatures, ACPICA must be compatible. BZ 10454.
7173 Fixed a possible negative array index in AcpiUtValidateException. Added
7175 fields to the exception string arrays to eliminate a -1 subtraction on
7179 Updated the debug tracking macros to reduce overall code and data size.
7180 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
7181 instead of pointers to static strings. Jan Beulich and Bob Moore.
7183 Implemented argument count checking in control method invocation via
7184 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
7186 many. This applies only to extern programmatic control method execution,
7188 method-to-method calls within the AML. Lin Ming.
7190 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
7192 longer needed, especially with the removal of 16-bit support. It was
7194 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
7197 32/64-bit platforms is required.
7199 Added the C const qualifier for appropriate string constants -- mostly
7200 MODULE_NAME and printf format strings. Jan Beulich.
7202 Example Code and Data Size: These are the sizes for the OS-independent
7203 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7204 debug version of the code includes the debug output trace mechanism and
7206 much larger code and data size.
7209 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7210 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7212 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7213 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7215 2) iASL Compiler/Disassembler and Tools:
7217 Implemented ACPI table revision ID validation in the disassembler. Zero
7219 always invalid. For DSDTs, the ID controls the interpreter integer width.
7221 means 32-bit and this is unusual. 2 or greater is 64-bit.
7223 ----------------------------------------
7224 21 March 2008. Summary of changes for version 20080321:
7226 1) ACPI CA Core Subsystem:
7228 Implemented an additional change to the GPE support in order to suppress
7229 spurious or stray GPEs. The AcpiEvDisableGpe function will now
7231 disable incoming GPEs that are neither enabled nor disabled -- meaning
7233 the GPE is unknown to the system. This should prevent future interrupt
7235 from that GPE. BZ 6217 (Zhang Rui)
7237 Fixed a problem where NULL package elements were not returned to the
7238 AcpiEvaluateObject interface correctly. The element was simply ignored
7239 instead of returning a NULL ACPI_OBJECT package element, potentially
7241 a buffer overflow and/or confusing the caller who expected a fixed number
7243 elements. BZ 10132 (Lin Ming, Bob Moore)
7245 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
7247 Qword), Field, BankField, and IndexField operators when invoked from
7249 an executing control method. In this case, these operators created
7251 nodes that were incorrectly left marked as permanent nodes instead of
7252 temporary nodes. This could cause a problem if there is race condition
7253 between an exiting control method and a running namespace walk. (Reported
7257 Fixed a problem where the CreateField and CreateXXXField operators would
7258 incorrectly allow duplicate names (the name of the field) with no
7262 Implemented several changes for Notify handling. Added support for new
7264 values (ACPI 2.0+) and improved the Notify debug output. Notify on
7265 PowerResource objects is no longer allowed, as per the ACPI
7267 (Bob Moore, Zhang Rui)
7269 All Reference Objects returned via the AcpiEvaluateObject interface are
7271 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
7273 NULL objects - either NULL package elements or unresolved named
7276 Fixed a problem where an extraneous debug message was produced for
7278 objects (when debugging enabled). The message "Package List length larger
7279 than NumElements count" is now produced in the correct case, and is now
7281 error message rather than a debug message. Added a debug message for the
7282 opposite case, where NumElements is larger than the Package List (the
7284 will be padded out with NULL elements as per the ACPI spec.)
7286 Implemented several improvements for the output of the ASL "Debug" object
7288 clarify and keep all data for a given object on one output line.
7290 Fixed two size calculation issues with the variable-length Start
7292 resource descriptor.
7294 Example Code and Data Size: These are the sizes for the OS-independent
7295 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7296 debug version of the code includes the debug output trace mechanism and
7298 a much larger code and data size.
7301 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7302 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7304 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7305 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7307 2) iASL Compiler/Disassembler and Tools:
7309 Fixed a problem with the use of the Switch operator where execution of
7311 containing method by multiple concurrent threads could cause an
7312 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
7313 actual Switch opcode, it must be simulated with local named temporary
7314 variables and if/else pairs. The solution chosen was to mark any method
7316 uses Switch as Serialized, thus preventing multiple thread entries. BZ
7319 ----------------------------------------
7320 13 February 2008. Summary of changes for version 20080213:
7322 1) ACPI CA Core Subsystem:
7324 Implemented another MS compatibility design change for GPE/Notify
7326 GPEs are now cleared/enabled asynchronously to allow all pending notifies
7328 complete first. It is expected that the OSL will queue the enable request
7329 behind all pending notify requests (may require changes to the local host
7331 in AcpiOsExecute). Alexey Starikovskiy.
7333 Fixed a problem where buffer and package objects passed as arguments to a
7334 control method via the external AcpiEvaluateObject interface could cause
7336 AE_AML_INTERNAL exception depending on the order and type of operators
7337 executed by the target control method.
7339 Fixed a problem where resource descriptor size optimization could cause a
7340 problem when a _CRS resource template is passed to a _SRS method. The
7342 resource template must use the same descriptors (with the same size) as
7343 returned from _CRS. This change affects the following resource
7345 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
7348 Fixed a problem where a CopyObject to RegionField, BankField, and
7350 objects did not perform an implicit conversion as it should. These types
7352 retain their initial type permanently as per the ACPI specification.
7354 a CopyObject to all other object types should not perform an implicit
7355 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
7357 Fixed a problem with the AcpiGetDevices interface where the mechanism to
7358 match device CIDs did not examine the entire list of available CIDs, but
7359 instead aborted on the first non-matching CID. Andrew Patterson.
7361 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
7363 inadvertently changed to return a 16-bit value instead of a 32-bit value,
7364 truncating the upper dword of a 64-bit value. This macro is only used to
7365 display debug output, so no incorrect calculations were made. Also,
7366 reimplemented the macro so that a 64-bit shift is not performed by
7367 inefficient compilers.
7369 Added missing va_end statements that should correspond with each va_start
7372 Example Code and Data Size: These are the sizes for the OS-independent
7373 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7374 debug version of the code includes the debug output trace mechanism and
7376 a much larger code and data size.
7379 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7380 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7382 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7383 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7385 2) iASL Compiler/Disassembler and Tools:
7387 Implemented full disassembler support for the following new ACPI tables:
7388 BERT, EINJ, and ERST. Implemented partial disassembler support for the
7389 complicated HEST table. These tables support the Windows Hardware Error
7390 Architecture (WHEA).
7392 ----------------------------------------
7393 23 January 2008. Summary of changes for version 20080123:
7395 1) ACPI CA Core Subsystem:
7397 Added the 2008 copyright to all module headers and signons. This affects
7398 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7399 the tools/utilities.
7401 Fixed a problem with the SizeOf operator when used with Package and
7403 objects. These objects have deferred execution for some arguments, and
7405 execution is now completed before the SizeOf is executed. This problem
7407 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
7411 Implemented an enhancement to the interpreter "slack mode". In the
7414 an explicit return or an implicitly returned object from the last
7416 opcode, a control method will now implicitly return an integer of value 0
7418 Microsoft compatibility. (Lin Ming) BZ 392
7420 Fixed a problem with the Load operator where an exception was not
7423 the case where the table is already loaded. (Lin Ming) BZ 463
7425 Implemented support for the use of DDBHandles as an Indexed Reference, as
7427 the ACPI spec. (Lin Ming) BZ 486
7429 Implemented support for UserTerm (Method invocation) for the Unload
7431 as per the ACPI spec. (Lin Ming) BZ 580
7433 Fixed a problem with the LoadTable operator where the OemId and
7435 input strings could cause unexpected failures if they were shorter than
7437 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
7439 Implemented support for UserTerm (Method invocation) for the Unload
7441 as per the ACPI spec. (Lin Ming) BZ 580
7443 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
7445 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
7447 Example Code and Data Size: These are the sizes for the OS-independent
7448 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7449 debug version of the code includes the debug output trace mechanism and
7451 a much larger code and data size.
7454 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7455 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7457 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7458 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7460 2) iASL Compiler/Disassembler and Tools:
7462 Implemented support in the disassembler for checksum validation on
7464 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
7466 header dump at the start of the disassembly.
7468 Implemented additional debugging information in the namespace listing
7470 created during compilation. In addition to the namespace hierarchy, the
7472 pathname to each namespace object is displayed.
7474 Fixed a problem with the disassembler where invalid ACPI tables could
7476 faults or infinite loops.
7478 Fixed an unexpected parse error when using the optional "parameter types"
7479 list in a control method declaration. (Lin Ming) BZ 397
7481 Fixed a problem where two External declarations with the same name did
7483 cause an error (Lin Ming) BZ 509
7485 Implemented support for full TermArgs (adding Argx, Localx and method
7486 invocation) for the ParameterData parameter to the LoadTable operator.
7490 ----------------------------------------
7491 19 December 2007. Summary of changes for version 20071219:
7493 1) ACPI CA Core Subsystem:
7495 Implemented full support for deferred execution for the TermArg string
7496 arguments for DataTableRegion. This enables forward references and full
7497 operand resolution for the three string arguments. Similar to
7499 deferred argument execution.) Lin Ming. BZ 430
7501 Implemented full argument resolution support for the BankValue argument
7503 BankField. Previously, only constants were supported, now any TermArg may
7505 used. Lin Ming BZ 387, 393
7507 Fixed a problem with AcpiGetDevices where the search of a branch of the
7508 device tree could be terminated prematurely. In accordance with the ACPI
7509 specification, the search down the current branch is terminated if a
7511 is both not present and not functional (instead of just not present.)
7515 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
7517 the underlying AML code changed the GPE enable registers. Now, any
7519 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
7521 instead of simply ignored. Rui Zhang.
7523 Fixed a problem with Index Fields where the Index register was
7525 limited to a maximum of 32 bits. Now any size may be used.
7527 Fixed a couple memory leaks associated with "implicit return" objects
7529 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
7531 Example Code and Data Size: These are the sizes for the OS-independent
7532 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7533 debug version of the code includes the debug output trace mechanism and
7535 a much larger code and data size.
7538 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7539 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7541 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7542 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7544 ----------------------------------------
7545 14 November 2007. Summary of changes for version 20071114:
7547 1) ACPI CA Core Subsystem:
7549 Implemented event counters for each of the Fixed Events, the ACPI SCI
7550 (interrupt) itself, and control methods executed. Named
7551 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
7553 should be useful for debugging and statistics.
7555 Implemented a new external interface, AcpiGetStatistics, to retrieve the
7556 contents of the various event counters. Returns the current values for
7557 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
7558 AcpiMethodCount. The interface can be expanded in the future if new
7560 are added. Device drivers should use this interface rather than access
7564 Fixed a problem with the FromBCD and ToBCD operators. With some
7566 the ShortDivide function worked incorrectly, causing problems with the
7568 functions with large input values. A truncation from 64-bit to 32-bit
7569 inadvertently occurred. Internal BZ 435. Lin Ming
7571 Fixed a problem with Index references passed as method arguments.
7573 passed as arguments to control methods were dereferenced immediately
7575 control was passed to the called method). The references are now
7577 passed directly to the called method. BZ 5389. Lin Ming
7579 Fixed a problem with CopyObject used in conjunction with the Index
7581 The reference was incorrectly dereferenced before the copy. The reference
7583 now correctly copied. BZ 5391. Lin Ming
7585 Fixed a problem with Control Method references within Package objects.
7587 references are now correctly generated. This completes the package
7588 construction overhaul that began in version 20071019.
7590 Example Code and Data Size: These are the sizes for the OS-independent
7591 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7592 debug version of the code includes the debug output trace mechanism and
7594 a much larger code and data size.
7597 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7598 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7600 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7601 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7604 2) iASL Compiler/Disassembler and Tools:
7606 The AcpiExec utility now installs handlers for all of the predefined
7607 Operation Region types. New types supported are: PCI_Config, CMOS, and
7610 Fixed a problem with the 64-bit version of AcpiExec where the extended
7612 bit) address fields for the DSDT and FACS within the FADT were not being
7613 used, causing truncation of the upper 32-bits of these addresses. Lin
7617 ----------------------------------------
7618 19 October 2007. Summary of changes for version 20071019:
7620 1) ACPI CA Core Subsystem:
7622 Fixed a problem with the Alias operator when the target of the alias is a
7623 named ASL operator that opens a new scope -- Scope, Device,
7625 Processor, and ThermalZone. In these cases, any children of the original
7626 operator could not be accessed via the alias, potentially causing
7628 AE_NOT_FOUND exceptions. (BZ 9067)
7630 Fixed a problem with the Package operator where all named references were
7631 created as object references and left otherwise unresolved. According to
7633 ACPI specification, a Package can only contain Data Objects or references
7635 control methods. The implication is that named references to Data Objects
7636 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
7637 immediately upon package creation. This is the approach taken with this
7638 change. References to all other named objects (Methods, Devices, Scopes,
7639 etc.) are all now properly created as reference objects. (BZ 5328)
7641 Reverted a change to Notify handling that was introduced in version
7642 20070508. This version changed the Notify handling from asynchronous to
7643 fully synchronous (Device driver Notify handling with respect to the
7645 ASL operator). It was found that this change caused more problems than it
7646 solved and was removed by most users.
7648 Fixed a problem with the Increment and Decrement operators where the type
7650 the target object could be unexpectedly and incorrectly changed. (BZ 353)
7653 Fixed a problem with the Load and LoadTable operators where the table
7654 location within the namespace was ignored. Instead, the table was always
7655 loaded into the root or current scope. Lin Ming.
7657 Fixed a problem with the Load operator when loading a table from a buffer
7658 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
7660 Fixed a problem with the Debug object where a store of a DdbHandle
7662 object to the Debug object could cause a fault.
7664 Added a table checksum verification for the Load operator, in the case
7666 the load is from a buffer. (BZ 578).
7668 Implemented additional parameter validation for the LoadTable operator.
7670 length of the input strings SignatureString, OemIdString, and OemTableId
7672 now checked for maximum lengths. (BZ 582) Lin Ming.
7674 Example Code and Data Size: These are the sizes for the OS-independent
7675 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7676 debug version of the code includes the debug output trace mechanism and
7678 a much larger code and data size.
7681 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7682 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7684 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7685 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7688 2) iASL Compiler/Disassembler:
7690 Fixed a problem where if a single file was specified and the file did not
7691 exist, no error message was emitted. (Introduced with wildcard support in
7694 ----------------------------------------
7695 19 September 2007. Summary of changes for version 20070919:
7697 1) ACPI CA Core Subsystem:
7699 Designed and implemented new external interfaces to install and remove
7700 handlers for ACPI table-related events. Current events that are defined
7702 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
7703 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
7704 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
7706 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
7707 (acpi_serialized option on Linux) could cause some systems to hang during
7708 initialization. (Bob Moore) BZ 8171
7710 Fixed a problem where objects of certain types (Device, ThermalZone,
7711 Processor, PowerResource) can be not found if they are declared and
7712 referenced from within the same control method (Lin Ming) BZ 341
7714 Example Code and Data Size: These are the sizes for the OS-independent
7715 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7716 debug version of the code includes the debug output trace mechanism and
7718 a much larger code and data size.
7721 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7722 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7724 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7725 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7728 2) iASL Compiler/Disassembler:
7730 Implemented support to allow multiple files to be compiled/disassembled
7733 single invocation. This includes command line wildcard support for both
7735 Windows and Unix versions of the compiler. This feature simplifies the
7736 disassembly and compilation of multiple ACPI tables in a single
7739 ----------------------------------------
7740 08 May 2007. Summary of changes for version 20070508:
7742 1) ACPI CA Core Subsystem:
7744 Implemented a Microsoft compatibility design change for the handling of
7746 Notify AML operator. Previously, notify handlers were dispatched and
7747 executed completely asynchronously in a deferred thread. The new design
7748 still executes the notify handlers in a different thread, but the
7750 thread that executed the Notify() now waits at a synchronization point
7752 the notify handler to complete. Some machines depend on a synchronous
7754 operator in order to operate correctly.
7756 Implemented support to allow Package objects to be passed as method
7757 arguments to the external AcpiEvaluateObject interface. Previously, this
7758 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
7759 implemented since there were no reserved control methods that required it
7762 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
7764 contained invalid non-zero values in reserved fields could cause later
7765 failures because these fields have meaning in later revisions of the
7767 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
7769 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
7771 Fixed a problem where the Global Lock handle was not properly updated if
7773 thread that acquired the Global Lock via executing AML code then
7775 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
7779 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
7780 could be corrupted if the interrupt being removed was at the head of the
7781 list. Reported by Linn Crosetto.
7783 Example Code and Data Size: These are the sizes for the OS-independent
7784 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7785 debug version of the code includes the debug output trace mechanism and
7787 a much larger code and data size.
7790 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7791 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7793 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7794 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7796 ----------------------------------------
7797 20 March 2007. Summary of changes for version 20070320:
7799 1) ACPI CA Core Subsystem:
7801 Implemented a change to the order of interpretation and evaluation of AML
7802 operand objects within the AML interpreter. The interpreter now evaluates
7803 operands in the order that they appear in the AML stream (and the
7804 corresponding ASL code), instead of in the reverse order (after the
7806 operand list has been parsed). The previous behavior caused several
7808 incompatibilities with the Microsoft AML interpreter as well as being
7809 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
7811 Implemented a change to the ACPI Global Lock support. All interfaces to
7813 global lock now allow the same thread to acquire the lock multiple times.
7814 This affects the AcpiAcquireGlobalLock external interface to the global
7816 as well as the internal use of the global lock to support AML fields -- a
7817 control method that is holding the global lock can now simultaneously
7819 AML fields that require global lock protection. Previously, in both
7821 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
7823 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
7824 Controller. There is no change to the behavior of the AML Acquire
7826 as this can already be used to acquire a mutex multiple times by the same
7827 thread. BZ 8066. With assistance from Alexey Starikovskiy.
7829 Fixed a problem where invalid objects could be referenced in the AML
7830 Interpreter after error conditions. During operand evaluation, ensure
7832 the internal "Return Object" field is cleared on error and only valid
7833 pointers are stored there. Caused occasional access to deleted objects
7835 resulted in "large reference count" warning messages. Valery Podrezov.
7837 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
7839 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
7842 Fixed an internal problem with the handling of result objects on the
7843 interpreter result stack. BZ 7872. Valery Podrezov.
7845 Removed obsolete code that handled the case where AML_NAME_OP is the
7847 of a reference (Reference.Opcode). This code was no longer necessary. BZ
7848 7874. Valery Podrezov.
7850 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
7853 remnant from the previously discontinued 16-bit support.
7855 Example Code and Data Size: These are the sizes for the OS-independent
7856 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7857 debug version of the code includes the debug output trace mechanism and
7859 a much larger code and data size.
7862 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7863 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7865 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7866 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7868 ----------------------------------------
7869 26 January 2007. Summary of changes for version 20070126:
7871 1) ACPI CA Core Subsystem:
7873 Added the 2007 copyright to all module headers and signons. This affects
7874 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7877 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
7878 during a table load. A bad pointer was passed in the case where the DSDT
7880 overridden, causing a fault in this case.
7882 Example Code and Data Size: These are the sizes for the OS-independent
7883 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7884 debug version of the code includes the debug output trace mechanism and
7886 a much larger code and data size.
7889 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7890 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7892 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7893 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7895 ----------------------------------------
7896 15 December 2006. Summary of changes for version 20061215:
7898 1) ACPI CA Core Subsystem:
7900 Support for 16-bit ACPICA has been completely removed since it is no
7902 necessary and it clutters the code. All 16-bit macros, types, and
7903 conditional compiles have been removed, cleaning up and simplifying the
7905 across the entire subsystem. DOS support is no longer needed since the
7906 bootable Linux firmware kit is now available.
7908 The handler for the Global Lock is now removed during AcpiTerminate to
7909 enable a clean subsystem restart, via the implementation of the
7910 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
7913 Implemented enhancements to the multithreading support within the
7915 to enable improved multithreading debugging and evaluation of the
7919 Debugger: Enhanced the Statistics/Memory command to emit the total
7921 memory used during the execution, as well as the maximum memory consumed
7923 each of the various object types. (Valery Podrezov)
7925 Example Code and Data Size: These are the sizes for the OS-independent
7926 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7927 debug version of the code includes the debug output trace mechanism and
7929 a much larger code and data size.
7932 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7933 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7935 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7936 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7939 2) iASL Compiler/Disassembler and Tools:
7941 AcpiExec: Implemented a new option (-m) to display full memory use
7942 statistics upon subsystem/program termination. (Valery Podrezov)
7944 ----------------------------------------
7945 09 November 2006. Summary of changes for version 20061109:
7947 1) ACPI CA Core Subsystem:
7949 Optimized the Load ASL operator in the case where the source operand is
7951 operation region. Simply map the operation region memory, instead of
7952 performing a bytewise read. (Region must be of type SystemMemory, see
7955 Fixed the Load ASL operator for the case where the source operand is a
7956 region field. A buffer object is also allowed as the source operand. BZ
7959 Fixed a problem where the Load ASL operator allowed the source operand to
7961 an operation region of any type. It is now restricted to regions of type
7962 SystemMemory, as per the ACPI specification. BZ 481
7964 Additional cleanup and optimizations for the new Table Manager code.
7966 AcpiEnable will now fail if all of the required ACPI tables are not
7968 (FADT, FACS, DSDT). BZ 477
7970 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
7972 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
7973 manually optimized to be aligned and will not work if it is byte-packed.
7975 Example Code and Data Size: These are the sizes for the OS-independent
7976 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7977 debug version of the code includes the debug output trace mechanism and
7979 a much larger code and data size.
7982 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7983 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7985 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7986 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7989 2) iASL Compiler/Disassembler and Tools:
7991 Fixed a problem where the presence of the _OSI predefined control method
7992 within complex expressions could cause an internal compiler error.
7994 AcpiExec: Implemented full region support for multiple address spaces.
7995 SpaceId is now part of the REGION object. BZ 429
7997 ----------------------------------------
7998 11 October 2006. Summary of changes for version 20061011:
8000 1) ACPI CA Core Subsystem:
8002 Completed an AML interpreter performance enhancement for control method
8003 execution. Previously a 2-pass parse/execution, control methods are now
8004 completely parsed and executed in a single pass. This improves overall
8005 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8006 use. (Valery Podrezov + interpreter changes in version 20051202 that
8007 eliminated namespace loading during the pass one parse.)
8009 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8011 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8013 obtained and also checked for an ID match.
8015 Implemented additional support for the PCI _ADR execution: upsearch until
8017 device scope is found before executing _ADR. This allows PCI_Config
8018 operation regions to be declared locally within control methods
8022 Fixed a problem with a possible race condition between threads executing
8023 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8024 modifying AcpiWalkNamespace to (by default) ignore all temporary
8026 entries created during any concurrent control method execution. An
8027 additional namespace race condition is known to exist between
8028 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8031 Restructured the AML ParseLoop function, breaking it into several
8032 subfunctions in order to reduce CPU stack use and improve
8036 AcpiGetHandle: Fix for parameter validation to detect invalid
8038 of prefix handle and pathname. BZ 478
8040 Example Code and Data Size: These are the sizes for the OS-independent
8041 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8042 debug version of the code includes the debug output trace mechanism and
8044 a much larger code and data size.
8047 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8048 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8050 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8051 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8053 2) iASL Compiler/Disassembler and Tools:
8055 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8057 to restore original behavior.
8059 ----------------------------------------
8060 27 September 2006. Summary of changes for version 20060927:
8062 1) ACPI CA Core Subsystem:
8064 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8065 These functions now use a spinlock for mutual exclusion and the interrupt
8066 level indication flag is not needed.
8068 Fixed a problem with the Global Lock where the lock could appear to be
8069 obtained before it is actually obtained. The global lock semaphore was
8070 inadvertently created with one unit instead of zero units. (BZ 464)
8074 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8076 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8078 Example Code and Data Size: These are the sizes for the OS-independent
8079 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8080 debug version of the code includes the debug output trace mechanism and
8082 a much larger code and data size.
8085 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8086 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8088 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8089 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8092 2) iASL Compiler/Disassembler and Tools:
8094 Fixed a compilation problem with the pre-defined Resource Descriptor
8096 names where an "object does not exist" error could be incorrectly
8098 if the parent ResourceTemplate pathname places the template within a
8099 different namespace scope than the current scope. (BZ 7212)
8101 Fixed a problem where the compiler could hang after syntax errors
8103 in an ElseIf construct. (BZ 453)
8105 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8106 operator. An incorrect output filename was produced when this parameter
8108 a null string (""). Now, the original input filename is used as the AML
8109 output filename, with an ".aml" extension.
8111 Implemented a generic batch command mode for the AcpiExec utility
8113 any AML debugger command) (Valery Podrezov).
8115 ----------------------------------------
8116 12 September 2006. Summary of changes for version 20060912:
8118 1) ACPI CA Core Subsystem:
8120 Enhanced the implementation of the "serialized mode" of the interpreter
8121 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
8122 specified, instead of creating a serialization semaphore per control
8124 the interpreter lock is simply no longer released before a blocking
8125 operation during control method execution. This effectively makes the AML
8126 Interpreter single-threaded. The overhead of a semaphore per-method is
8129 Fixed a regression where an error was no longer emitted if a control
8131 attempts to create 2 objects of the same name. This once again returns
8132 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
8134 will dynamically serialize the control method to possible prevent future
8137 Integrated a fix for a problem with PCI Express HID detection in the PCI
8138 Config Space setup procedure. (BZ 7145)
8140 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
8141 AcpiHwInitialize function - the FADT registers are now validated when the
8144 Added two new warnings during FADT verification - 1) if the FADT is
8146 than the largest known FADT version, and 2) if there is a mismatch
8149 32-bit block address and the 64-bit X counterpart (when both are non-
8152 Example Code and Data Size: These are the sizes for the OS-independent
8153 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8154 debug version of the code includes the debug output trace mechanism and
8156 a much larger code and data size.
8159 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8160 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8162 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8163 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8166 2) iASL Compiler/Disassembler and Tools:
8168 Fixed a problem with the implementation of the Switch() operator where
8170 temporary variable was declared too close to the actual Switch, instead
8172 at method level. This could cause a problem if the Switch() operator is
8173 within a while loop, causing an error on the second iteration. (BZ 460)
8175 Disassembler - fix for error emitted for unknown type for target of scope
8176 operator. Now, ignore it and continue.
8178 Disassembly of an FADT now verifies the input FADT and reports any errors
8179 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
8181 Disassembly of raw data buffers with byte initialization data now
8183 each output line with the current buffer offset.
8185 Disassembly of ASF! table now includes all variable-length data fields at
8186 the end of some of the subtables.
8188 The disassembler now emits a comment if a buffer appears to be a
8189 ResourceTemplate, but cannot be disassembled as such because the EndTag
8191 not appear at the very end of the buffer.
8193 AcpiExec - Added the "-t" command line option to enable the serialized
8195 of the AML interpreter.
8197 ----------------------------------------
8198 31 August 2006. Summary of changes for version 20060831:
8200 1) ACPI CA Core Subsystem:
8202 Miscellaneous fixes for the Table Manager:
8203 - Correctly initialize internal common FADT for all 64-bit "X" fields
8204 - Fixed a couple table mapping issues during table load
8205 - Fixed a couple alignment issues for IA64
8206 - Initialize input array to zero in AcpiInitializeTables
8207 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
8210 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
8212 immediately disabled to prevent the waking GPE from firing again and to
8213 prevent other wake GPEs from interrupting the wake process.
8215 Added the AcpiGpeCount global that tracks the number of processed GPEs,
8217 be used for debugging systems with a large number of ACPI interrupts.
8219 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
8220 both the ACPICA headers and the disassembler.
8222 Example Code and Data Size: These are the sizes for the OS-independent
8223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8224 debug version of the code includes the debug output trace mechanism and
8226 a much larger code and data size.
8229 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8230 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8232 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8233 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8236 2) iASL Compiler/Disassembler and Tools:
8238 Disassembler support for the DMAR ACPI table.
8240 ----------------------------------------
8241 23 August 2006. Summary of changes for version 20060823:
8243 1) ACPI CA Core Subsystem:
8245 The Table Manager component has been completely redesigned and
8246 reimplemented. The new design is much simpler, and reduces the overall
8248 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
8250 now possible to obtain the ACPI tables very early during kernel
8251 initialization, even before dynamic memory management is initialized.
8252 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
8254 Obsolete ACPICA interfaces:
8256 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
8259 - AcpiLoadTable: Not needed.
8260 - AcpiUnloadTable: Not needed.
8262 New ACPICA interfaces:
8264 - AcpiInitializeTables: Must be called before the table manager can be
8266 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
8267 allocated memory after it becomes available.
8268 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
8272 Other ACPICA changes:
8274 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
8276 AcpiOsUnmapMemory to free this mapping.
8277 - AcpiGetTable returns the actual mapped table. The mapping is managed
8278 internally and must not be deleted by the caller. Use of this interface
8279 causes no additional dynamic memory allocation.
8280 - AcpiFindRootPointer: Support for physical addressing has been
8282 it appeared to be unused.
8283 - The interface to AcpiOsMapMemory has changed to be consistent with the
8284 other allocation interfaces.
8285 - The interface to AcpiOsGetRootPointer has changed to eliminate
8288 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
8290 bit platforms. Was previously 64 bits on all platforms.
8291 - The interface to the ACPI Global Lock acquire/release macros have
8293 slightly since ACPICA no longer keeps a local copy of the FACS with a
8294 constructed pointer to the actual global lock.
8296 Porting to the new table manager:
8298 - AcpiInitializeTables: Must be called once, and can be called anytime
8299 during the OS initialization process. It allows the host to specify an
8301 of memory to be used to store the internal version of the RSDT/XSDT (root
8302 table). This allows the host to access ACPI tables before memory
8304 is initialized and running.
8305 - AcpiReallocateRootTable: Can be called after memory management is
8307 to copy the root table to a dynamically allocated array, freeing up the
8308 scratch memory specified in the call to AcpiInitializeTables.
8309 - AcpiSubsystemInitialize: This existing interface is independent of the
8310 Table Manager, and does not have to be called before the Table Manager
8312 be used, it only must be called before the rest of ACPICA can be used.
8313 - ACPI Tables: Some changes have been made to the names and structure of
8315 actbl.h and actbl1.h header files and may require changes to existing
8317 For example, bitfields have been completely removed because of their lack
8319 portability across C compilers.
8320 - Update interfaces to the Global Lock acquire/release macros if local
8321 versions are used. (see acwin.h)
8323 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
8327 Example Code and Data Size: These are the sizes for the OS-independent
8328 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8329 debug version of the code includes the debug output trace mechanism and
8331 a much larger code and data size.
8334 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8335 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8337 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8338 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8341 2) iASL Compiler/Disassembler and Tools:
8343 No changes for this release.
8345 ----------------------------------------
8346 21 July 2006. Summary of changes for version 20060721:
8348 1) ACPI CA Core Subsystem:
8350 The full source code for the ASL test suite used to validate the iASL
8351 compiler and the ACPICA core subsystem is being released with the ACPICA
8352 source for the first time. The source is contained in a separate package
8354 consists of over 1100 files that exercise all ASL/AML operators. The
8356 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
8360 Completed a new design and implementation for support of the ACPI Global
8361 Lock. On the OS side, the global lock is now treated as a standard AML
8362 mutex. Previously, multiple OS threads could "acquire" the global lock
8363 simultaneously. However, this could cause the BIOS to be starved out of
8365 lock - especially in cases such as the Embedded Controller driver where
8366 there is a tight coupling between the OS and the BIOS.
8368 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
8369 The Global Lock interrupt handler no longer queues the execution of a
8370 separate thread to signal the global lock semaphore. Instead, the
8372 is signaled directly from the interrupt handler.
8374 Implemented support within the AML interpreter for package objects that
8375 contain a larger AML length (package list length) than the package
8377 count. In this case, the length of the package is truncated to match the
8378 package element count. Some BIOS code apparently modifies the package
8380 on the fly, and this change supports this behavior. Provides
8382 with the MS AML interpreter. (With assistance from Fiodor Suietov)
8384 Implemented a temporary fix for the BankValue parameter of a Bank Field
8386 support all constant values, now including the Zero and One opcodes.
8387 Evaluation of this parameter must eventually be converted to a full
8389 evaluation. A not-implemented error is now returned (temporarily) for
8391 constant values for this parameter.
8393 Fixed problem reports (Fiodor Suietov) integrated:
8394 - Fix for premature object deletion after CopyObject on Operation Region
8398 Example Code and Data Size: These are the sizes for the OS-independent
8399 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8400 debug version of the code includes the debug output trace mechanism and
8402 a much larger code and data size.
8405 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
8406 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
8408 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8409 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8412 2) iASL Compiler/Disassembler and Tools:
8414 No changes for this release.
8416 ----------------------------------------
8417 07 July 2006. Summary of changes for version 20060707:
8419 1) ACPI CA Core Subsystem:
8421 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
8422 that do not allow the initialization of address pointers within packed
8423 structures - even though the hardware itself may support misaligned
8424 transfers. Some of the debug data structures are packed by default to
8427 Added an error message for the case where AcpiOsGetThreadId() returns
8429 A non-zero value is required by the core ACPICA code to ensure the proper
8430 operation of AML mutexes and recursive control methods.
8432 The DSDT is now the only ACPI table that determines whether the AML
8433 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
8435 the hooks for per-table 32/64 switching have been removed from the code.
8437 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
8439 Fixed a possible leak of an OwnerID in the error path of
8440 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
8441 deletion to a single place in AcpiTbUninstallTable to correct possible
8443 when using the AcpiTbDeleteTablesByType interface (with assistance from
8446 Fixed a problem with Serialized control methods where the semaphore
8447 associated with the method could be over-signaled after multiple method
8450 Fixed two issues with the locking of the internal namespace data
8452 Both the Unload() operator and AcpiUnloadTable interface now lock the
8453 namespace during the namespace deletion associated with the table unload
8454 (with assistance from Linn Crosetto.)
8456 Fixed problem reports (Valery Podrezov) integrated:
8457 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
8459 Fixed problem reports (Fiodor Suietov) integrated:
8460 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
8461 - On Address Space handler deletion, needless deactivation call (BZ 374)
8462 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
8464 - Possible memory leak, Notify sub-objects of Processor, Power,
8467 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
8468 - Minimum Length of RSDT should be validated (BZ 379)
8469 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
8471 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
8475 Example Code and Data Size: These are the sizes for the OS-independent
8476 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8477 debug version of the code includes the debug output trace mechanism and
8479 a much larger code and data size.
8482 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8483 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8485 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8486 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8489 2) iASL Compiler/Disassembler and Tools:
8491 Fixed problem reports:
8492 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
8495 ----------------------------------------
8496 23 June 2006. Summary of changes for version 20060623:
8498 1) ACPI CA Core Subsystem:
8500 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
8501 allows the type to be customized to the host OS for improved efficiency
8502 (since a spinlock is usually a very small object.)
8504 Implemented support for "ignored" bits in the ACPI registers. According
8506 the ACPI specification, these bits should be preserved when writing the
8507 registers via a read/modify/write cycle. There are 3 bits preserved in
8509 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
8511 Implemented the initial deployment of new OSL mutex interfaces. Since
8513 host operating systems have separate mutex and semaphore objects, this
8514 feature was requested. The base code now uses mutexes (and the new mutex
8515 interfaces) wherever a binary semaphore was used previously. However, for
8516 the current release, the mutex interfaces are defined as macros to map
8518 to the existing semaphore interfaces. Therefore, no OSL changes are
8520 at this time. (See acpiosxf.h)
8522 Fixed several problems with the support for the control method SyncLevel
8523 parameter. The SyncLevel now works according to the ACPI specification
8525 in concert with the Mutex SyncLevel parameter, since the current
8527 is a property of the executing thread. Mutual exclusion for control
8529 is now implemented with a mutex instead of a semaphore.
8531 Fixed three instances of the use of the C shift operator in the bitfield
8532 support code (exfldio.c) to avoid the use of a shift value larger than
8534 target data width. The behavior of C compilers is undefined in this case
8536 can cause unpredictable results, and therefore the case must be detected
8538 avoided. (Fiodor Suietov)
8540 Added an info message whenever an SSDT or OEM table is loaded dynamically
8541 via the Load() or LoadTable() ASL operators. This should improve
8543 capability since it will show exactly what tables have been loaded
8545 the tables present in the RSDT/XSDT.)
8547 Example Code and Data Size: These are the sizes for the OS-independent
8548 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8549 debug version of the code includes the debug output trace mechanism and
8551 a much larger code and data size.
8554 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8555 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8557 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8558 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8561 2) iASL Compiler/Disassembler and Tools:
8563 No changes for this release.
8565 ----------------------------------------
8566 08 June 2006. Summary of changes for version 20060608:
8568 1) ACPI CA Core Subsystem:
8570 Converted the locking mutex used for the ACPI hardware to a spinlock.
8572 change should eliminate all problems caused by attempting to acquire a
8573 semaphore at interrupt level, and it means that all ACPICA external
8574 interfaces that directly access the ACPI hardware can be safely called
8576 interrupt level. OSL code that implements the semaphore interfaces should
8578 able to eliminate any workarounds for being called at interrupt level.
8580 Fixed a regression introduced in 20060526 where the ACPI device
8581 initialization could be prematurely aborted with an AE_NOT_FOUND if a
8583 did not have an optional _INI method.
8585 Fixed an IndexField issue where a write to the Data Register should be
8586 limited in size to the AccessSize (width) of the IndexField itself. (BZ
8590 Fixed problem reports (Valery Podrezov) integrated:
8591 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
8593 Fixed problem reports (Fiodor Suietov) integrated:
8594 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
8596 Removed four global mutexes that were obsolete and were no longer being
8599 Example Code and Data Size: These are the sizes for the OS-independent
8600 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8601 debug version of the code includes the debug output trace mechanism and
8603 a much larger code and data size.
8606 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8607 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8609 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8610 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8613 2) iASL Compiler/Disassembler and Tools:
8615 Fixed a fault when using -g option (get tables from registry) on Windows
8618 Fixed problem reports integrated:
8619 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
8620 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
8622 - Global table revision override (-r) is ignored (BZ 413)
8624 ----------------------------------------
8625 26 May 2006. Summary of changes for version 20060526:
8627 1) ACPI CA Core Subsystem:
8629 Restructured, flattened, and simplified the internal interfaces for
8630 namespace object evaluation - resulting in smaller code, less CPU stack
8632 and fewer interfaces. (With assistance from Mikhail Kouzmich)
8634 Fixed a problem with the CopyObject operator where the first parameter
8636 not typed correctly for the parser, interpreter, compiler, and
8638 Caused various errors and unexpected behavior.
8640 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
8641 produced incorrect results with some C compilers. Since the behavior of C
8642 compilers when the shift value is larger than the datatype width is
8643 apparently not well defined, the interpreter now detects this condition
8645 simply returns zero as expected in all such cases. (BZ 395)
8647 Fixed problem reports (Valery Podrezov) integrated:
8648 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
8649 - Allow interpreter to handle nested method declarations (BZ 5361)
8651 Fixed problem reports (Fiodor Suietov) integrated:
8652 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
8654 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
8656 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
8657 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
8658 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
8659 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
8660 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
8661 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
8662 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
8664 - Status of the Global Initialization Handler call not used (BZ 366)
8665 - Incorrect object parameter to Global Initialization Handler (BZ 367)
8667 Example Code and Data Size: These are the sizes for the OS-independent
8668 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8669 debug version of the code includes the debug output trace mechanism and
8671 a much larger code and data size.
8674 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8675 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8677 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8678 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8681 2) iASL Compiler/Disassembler and Tools:
8683 Modified the parser to allow the names IO, DMA, and IRQ to be used as
8684 namespace identifiers with no collision with existing resource descriptor
8685 macro names. This provides compatibility with other ASL compilers and is
8686 most useful for disassembly/recompilation of existing tables without
8688 errors. (With assistance from Thomas Renninger)
8690 Disassembler: fixed an incorrect disassembly problem with the
8691 DataTableRegion and CopyObject operators. Fixed a possible fault during
8692 disassembly of some Alias operators.
8694 ----------------------------------------
8695 12 May 2006. Summary of changes for version 20060512:
8697 1) ACPI CA Core Subsystem:
8699 Replaced the AcpiOsQueueForExecution interface with a new interface named
8700 AcpiOsExecute. The major difference is that the new interface does not
8702 a Priority parameter, this appeared to be useless and has been replaced
8705 Type parameter. The Type tells the host what type of execution is being
8706 requested, such as global lock handler, notify handler, GPE handler, etc.
8707 This allows the host to queue and execute the request as appropriate for
8709 request type, possibly using different work queues and different
8711 for the various request types. This enables fixes for multithreading
8712 deadlock problems such as BZ #5534, and will require changes to all
8714 OS interface layers. (Alexey Starikovskiy and Bob Moore)
8716 Fixed a possible memory leak associated with the support for the so-
8718 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
8721 Fixed a problem with the Load() operator where a table load from an
8722 operation region could overwrite an internal table buffer by up to 7
8724 and cause alignment faults on IPF systems. (With assistance from Luming
8727 Example Code and Data Size: These are the sizes for the OS-independent
8728 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8729 debug version of the code includes the debug output trace mechanism and
8731 a much larger code and data size.
8734 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8735 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8737 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8738 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8742 2) iASL Compiler/Disassembler and Tools:
8744 Disassembler: Implemented support to cross reference the internal
8746 and automatically generate ASL External() statements for symbols not
8748 within the current table being disassembled. This will simplify the
8749 disassembly and recompilation of interdependent tables such as SSDTs
8751 these statements will no longer have to be added manually.
8753 Disassembler: Implemented experimental support to automatically detect
8754 invocations of external control methods and generate appropriate
8756 statements. This is problematic because the AML cannot be correctly
8758 until the number of arguments for each control method is known.
8760 standalone method invocations and invocations as the source operand of a
8761 Store() statement are supported.
8763 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
8764 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
8765 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
8766 more readable and likely closer to the original ASL source.
8768 ----------------------------------------
8769 21 April 2006. Summary of changes for version 20060421:
8771 1) ACPI CA Core Subsystem:
8773 Removed a device initialization optimization introduced in 20051216 where
8774 the _STA method was not run unless an _INI was also present for the same
8775 device. This optimization could cause problems because it could allow
8777 methods to be run within a not-present device subtree. (If a not-present
8778 device had no _INI, _STA would not be run, the not-present status would
8780 be discovered, and the children of the device would be incorrectly
8783 Implemented a new _STA optimization where namespace subtrees that do not
8784 contain _INI are identified and ignored during device initialization.
8785 Selectively running _STA can significantly improve boot time on large
8786 machines (with assistance from Len Brown.)
8788 Implemented support for the device initialization case where the returned
8789 _STA flags indicate a device not-present but functioning. In this case,
8791 is not run, but the device children are examined for presence, as per the
8794 Implemented an additional change to the IndexField support in order to
8795 conform to MS behavior. The value written to the Index Register is not
8796 simply a byte offset, it is a byte offset in units of the access width of
8797 the parent Index Field. (Fiodor Suietov)
8799 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
8800 interface is called during the creation of all AML operation regions, and
8801 allows the host OS to exert control over what addresses it will allow the
8802 AML code to access. Operation Regions whose addresses are disallowed will
8803 cause a runtime exception when they are actually accessed (will not
8805 or abort table loading.) See oswinxf or osunixxf for an example
8808 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
8809 interface allows the host OS to match the various "optional"
8810 interface/behavior strings for the _OSI predefined control method as
8811 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
8812 for an example implementation.
8814 Restructured and corrected various problems in the exception handling
8816 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
8817 (with assistance from Takayoshi Kochi.)
8819 Modified the Linux source converter to ignore quoted string literals
8821 converting identifiers from mixed to lower case. This will correct
8823 with the disassembler and other areas where such strings must not be
8826 The ACPI_FUNCTION_* macros no longer require quotes around the function
8827 name. This allows the Linux source converter to convert the names, now
8829 the converter ignores quoted strings.
8831 Example Code and Data Size: These are the sizes for the OS-independent
8832 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8833 debug version of the code includes the debug output trace mechanism and
8835 a much larger code and data size.
8839 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8840 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8842 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8843 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8846 2) iASL Compiler/Disassembler and Tools:
8848 Implemented 3 new warnings for iASL, and implemented multiple warning
8852 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
8854 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
8855 check for the possible timeout, a warning is issued.
8857 2) Useless operators: If an ASL operator does not specify an optional
8859 operand and it also does not use the function return value from the
8860 operator, a warning is issued since the operator effectively does
8863 3) Unreferenced objects: If a namespace object is created, but never
8864 referenced, a warning is issued. This is a warning level 2 since there
8866 cases where this is ok, such as when a secondary table is loaded that
8868 the unreferenced objects. Even so, care is taken to only flag objects
8870 don't look like they will ever be used. For example, the reserved methods
8871 (starting with an underscore) are usually not referenced because it is
8872 expected that the OS will invoke them.
8874 ----------------------------------------
8875 31 March 2006. Summary of changes for version 20060331:
8877 1) ACPI CA Core Subsystem:
8879 Implemented header file support for the following additional ACPI tables:
8880 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
8882 all current and known ACPI tables are now defined in the ACPICA headers
8884 are available for use by device drivers and other software.
8886 Implemented support to allow tables that contain ACPI names with invalid
8887 characters to be loaded. Previously, this would cause the table load to
8888 fail, but since there are several known cases of such tables on existing
8889 machines, this change was made to enable ACPI support for them. Also,
8891 matches the behavior of the Microsoft ACPI implementation.
8893 Fixed a couple regressions introduced during the memory optimization in
8895 20060317 release. The namespace node definition required additional
8896 reorganization and an internal datatype that had been changed to 8-bit
8898 restored to 32-bit. (Valery Podrezov)
8900 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
8901 could be passed through to AcpiOsReleaseObject which is unexpected. Such
8902 null pointers are now trapped and ignored, matching the behavior of the
8903 previous implementation before the deployment of AcpiOsReleaseObject.
8904 (Valery Podrezov, Fiodor Suietov)
8906 Fixed a memory mapping leak during the deletion of a SystemMemory
8908 region where a cached memory mapping was not deleted. This became a
8909 noticeable problem for operation regions that are defined within
8911 used control methods. (Dana Meyers)
8913 Reorganized the ACPI table header files into two main files: one for the
8914 ACPI tables consumed by the ACPICA core, and another for the
8916 ACPI tables that are consumed by the drivers and other software. The
8918 FADT definitions were merged into one common section and three different
8919 tables (ACPI 1.0, 1.0+, and 2.0)
8921 Example Code and Data Size: These are the sizes for the OS-independent
8922 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8923 debug version of the code includes the debug output trace mechanism and
8925 a much larger code and data size.
8928 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8929 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8931 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8932 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8935 2) iASL Compiler/Disassembler and Tools:
8937 Disassembler: Implemented support to decode and format all non-AML ACPI
8938 tables (tables other than DSDTs and SSDTs.) This includes the new tables
8939 added to the ACPICA headers, therefore all current and known ACPI tables
8943 Disassembler: The change to allow ACPI names with invalid characters also
8944 enables the disassembly of such tables. Invalid characters within names
8946 changed to '*' to make the name printable; the iASL compiler will still
8947 generate an error for such names, however, since this is an invalid ACPI
8950 Implemented an option for AcpiXtract (-a) to extract all tables found in
8952 input file. The default invocation extracts only the DSDTs and SSDTs.
8954 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
8955 makefile for the AcpiXtract utility.
8957 ----------------------------------------
8958 17 March 2006. Summary of changes for version 20060317:
8960 1) ACPI CA Core Subsystem:
8962 Implemented the use of a cache object for all internal namespace nodes.
8963 Since there are about 1000 static nodes in a typical system, this will
8964 decrease memory use for cache implementations that minimize per-
8966 overhead (such as a slab allocator.)
8968 Removed the reference count mechanism for internal namespace nodes, since
8970 was deemed unnecessary. This reduces the size of each namespace node by
8971 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
8973 and 32 bytes for the 64-bit case.
8975 Optimized several internal data structures to reduce object size on 64-
8977 platforms by packing data within the 64-bit alignment. This includes the
8978 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
8979 instances corresponding to the namespace objects.
8981 Added two new strings for the predefined _OSI method: "Windows 2001.1
8985 Split the allocation tracking mechanism out to a separate file, from
8986 utalloc.c to uttrack.c. This mechanism appears to be only useful for
8987 application-level code. Kernels may wish to not include uttrack.c in
8990 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
8992 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
8995 Code and Data Size: These are the sizes for the acpica.lib produced by
8997 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8999 driver or OSPM code. The debug version of the code includes the debug
9001 trace mechanism and has a much larger code and data size. Note that these
9002 values will vary depending on the efficiency of the compiler and the
9003 compiler options used during generation.
9006 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9007 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9009 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9010 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9013 2) iASL Compiler/Disassembler and Tools:
9015 Implemented an ANSI C version of the acpixtract utility. This version
9017 automatically extract the DSDT and all SSDTs from the input acpidump text
9018 file and dump the binary output to separate files. It can also display a
9019 summary of the input file including the headers for each table found and
9020 will extract any single ACPI table, with any signature. (See
9021 source/tools/acpixtract)
9023 ----------------------------------------
9024 10 March 2006. Summary of changes for version 20060310:
9026 1) ACPI CA Core Subsystem:
9028 Tagged all external interfaces to the subsystem with the new
9029 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9031 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9032 macro. The default definition is NULL.
9034 Added the ACPI_THREAD_ID type for the return value from
9036 This allows the host to define this as necessary to simplify kernel
9037 integration. The default definition is ACPI_NATIVE_UINT.
9039 Fixed two interpreter problems related to error processing, the deletion
9041 objects, and placing invalid pointers onto the internal operator result
9042 stack. BZ 6028, 6151 (Valery Podrezov)
9044 Increased the reference count threshold where a warning is emitted for
9046 reference counts in order to eliminate unnecessary warnings on systems
9048 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9051 Due to universal disagreement as to the meaning of the 'c' in the
9053 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9054 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9055 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9058 Code and Data Size: These are the sizes for the acpica.lib produced by
9060 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9062 driver or OSPM code. The debug version of the code includes the debug
9064 trace mechanism and has a much larger code and data size. Note that these
9065 values will vary depending on the efficiency of the compiler and the
9066 compiler options used during generation.
9069 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9070 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9072 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9073 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9076 2) iASL Compiler/Disassembler:
9078 Disassembler: implemented support for symbolic resource descriptor
9079 references. If a CreateXxxxField operator references a fixed offset
9082 resource descriptor, a name is assigned to the descriptor and the offset
9084 translated to the appropriate resource tag and pathname. The addition of
9085 this support brings the disassembled code very close to the original ASL
9086 source code and helps eliminate run-time errors when the disassembled
9088 is modified (and recompiled) in such a way as to invalidate the original
9091 Implemented support for a Descriptor Name as the last parameter to the
9093 Register() macro. This parameter was inadvertently left out of the ACPI
9094 specification, and will be added for ACPI 3.0b.
9096 Fixed a problem where the use of the "_OSI" string (versus the full path
9097 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9099 Fixed a problem with the error message that occurs when an invalid string
9101 used for a _HID object (such as one with an embedded asterisk:
9103 The correct message is now displayed.
9105 ----------------------------------------
9106 17 February 2006. Summary of changes for version 20060217:
9108 1) ACPI CA Core Subsystem:
9110 Implemented a change to the IndexField support to match the behavior of
9112 Microsoft AML interpreter. The value written to the Index register is now
9114 byte offset, no longer an index based upon the width of the Data
9116 This should fix IndexField problems seen on some machines where the Data
9117 register is not exactly one byte wide. The ACPI specification will be
9118 clarified on this point.
9120 Fixed a problem where several resource descriptor types could overrun the
9121 internal descriptor buffer due to size miscalculation: VendorShort,
9122 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
9123 affect all platforms.
9125 Fixed a problem where individual resource descriptors were misaligned
9127 the internal buffer, causing alignment faults on IA64 platforms.
9129 Code and Data Size: These are the sizes for the acpica.lib produced by
9131 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9133 driver or OSPM code. The debug version of the code includes the debug
9135 trace mechanism and has a much larger code and data size. Note that these
9136 values will vary depending on the efficiency of the compiler and the
9137 compiler options used during generation.
9140 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9141 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9143 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9144 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9147 2) iASL Compiler/Disassembler:
9149 Implemented support for new reserved names: _WDG and _WED are Microsoft
9150 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
9151 defined method (Throttling Depth Limit.)
9153 Fixed a problem where a zero-length VendorShort or VendorLong resource
9154 descriptor was incorrectly emitted as a descriptor of length one.
9156 ----------------------------------------
9157 10 February 2006. Summary of changes for version 20060210:
9159 1) ACPI CA Core Subsystem:
9161 Removed a couple of extraneous ACPI_ERROR messages that appeared during
9162 normal execution. These became apparent after the conversion from
9165 Fixed a problem where the CreateField operator could hang if the BitIndex
9167 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
9169 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
9170 failed with an exception. This also fixes a couple of related RefOf and
9171 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
9173 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
9175 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
9179 Implemented a memory cleanup at the end of the execution of each
9181 of an AML While() loop, preventing the accumulation of outstanding
9183 (Valery Podrezov, BZ 5427)
9185 Eliminated a chunk of duplicate code in the object resolution code.
9189 Fixed several warnings during the 64-bit code generation.
9191 The AcpiSrc source code conversion tool now inserts one line of
9193 after an if() statement that is followed immediately by a comment,
9195 readability of the Linux code.
9197 Code and Data Size: The current and previous library sizes for the core
9198 subsystem are shown below. These are the code and data sizes for the
9199 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9201 values do not include any ACPI driver or OSPM code. The debug version of
9203 code includes the debug output trace mechanism and has a much larger code
9204 and data size. Note that these values will vary depending on the
9206 of the compiler and the compiler options used during generation.
9209 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9210 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9212 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9213 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9216 2) iASL Compiler/Disassembler:
9218 Fixed a problem with the disassembly of a BankField operator with a
9220 expression for the BankValue parameter.
9222 ----------------------------------------
9223 27 January 2006. Summary of changes for version 20060127:
9225 1) ACPI CA Core Subsystem:
9227 Implemented support in the Resource Manager to allow unresolved
9229 references within resource package objects for the _PRT method. This
9231 is in addition to the previously implemented unresolved reference support
9232 within the AML parser. If the interpreter slack mode is enabled, these
9233 unresolved references will be passed through to the caller as a NULL
9237 Implemented and deployed new macros and functions for error and warning
9238 messages across the subsystem. These macros are simpler and generate less
9239 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
9240 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
9241 macros remain defined to allow ACPI drivers time to migrate to the new
9244 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
9246 Acquire/Release Lock OSL interfaces.
9248 Fixed a problem where Alias ASL operators are sometimes not correctly
9249 resolved, in both the interpreter and the iASL compiler.
9251 Fixed several problems with the implementation of the
9252 ConcatenateResTemplate
9253 ASL operator. As per the ACPI specification, zero length buffers are now
9254 treated as a single EndTag. One-length buffers always cause a fatal
9255 exception. Non-zero length buffers that do not end with a full 2-byte
9257 cause a fatal exception.
9259 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
9260 interface. (With assistance from Thomas Renninger)
9262 Code and Data Size: The current and previous library sizes for the core
9263 subsystem are shown below. These are the code and data sizes for the
9264 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9266 values do not include any ACPI driver or OSPM code. The debug version of
9268 code includes the debug output trace mechanism and has a much larger code
9269 and data size. Note that these values will vary depending on the
9271 of the compiler and the compiler options used during generation.
9274 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9275 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9277 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9278 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9281 2) iASL Compiler/Disassembler:
9283 Fixed an internal error that was generated for any forward references to
9287 ----------------------------------------
9288 13 January 2006. Summary of changes for version 20060113:
9290 1) ACPI CA Core Subsystem:
9292 Added 2006 copyright to all module headers and signons. This affects
9293 virtually every file in the ACPICA core subsystem, iASL compiler, and the
9296 Enhanced the ACPICA error reporting in order to simplify user migration
9298 the non-debug version of ACPICA. Replaced all instances of the
9299 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
9301 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
9302 respectively. This preserves all error and warning messages in the non-
9304 version of the ACPICA code (this has been referred to as the "debug lite"
9305 option.) Over 200 cases were converted to create a total of over 380
9306 error/warning messages across the ACPICA code. This increases the code
9308 data size of the default non-debug version of the code somewhat (about
9310 but all error/warning reporting may be disabled if desired (and code
9311 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
9312 configuration option. The size of the debug version of ACPICA remains
9316 Fixed a memory leak within the AML Debugger "Set" command. One object was
9317 not properly deleted for every successful invocation of the command.
9319 Code and Data Size: The current and previous library sizes for the core
9320 subsystem are shown below. These are the code and data sizes for the
9321 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9323 values do not include any ACPI driver or OSPM code. The debug version of
9325 code includes the debug output trace mechanism and has a much larger code
9326 and data size. Note that these values will vary depending on the
9328 of the compiler and the compiler options used during generation.
9331 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9332 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9334 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9335 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9338 2) iASL Compiler/Disassembler:
9340 The compiler now officially supports the ACPI 3.0a specification that was
9341 released on December 30, 2005. (Specification is available at
9344 ----------------------------------------
9345 16 December 2005. Summary of changes for version 20051216:
9347 1) ACPI CA Core Subsystem:
9349 Implemented optional support to allow unresolved names within ASL Package
9350 objects. A null object is inserted in the package when a named reference
9351 cannot be located in the current namespace. Enabled via the interpreter
9352 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
9354 that contain such code.
9356 Implemented an optimization to the initialization sequence that can
9358 boot time. During ACPI device initialization, the _STA method is now run
9360 and only if the _INI method exists. The _STA method is used to determine
9362 the device is present; An _INI can only be run if _STA returns present,
9364 it is a waste of time to run the _STA method if the _INI does not exist.
9365 (Prototype and assistance from Dong Wei)
9367 Implemented use of the C99 uintptr_t for the pointer casting macros if it
9369 available in the current compiler. Otherwise, the default (void *) cast
9373 Fixed some possible memory leaks found within the execution path of the
9374 Break, Continue, If, and CreateField operators. (Valery Podrezov)
9376 Fixed a problem introduced in the 20051202 release where an exception is
9377 generated during method execution if a control method attempts to declare
9380 Moved resource descriptor string constants that are used by both the AML
9381 disassembler and AML debugger to the common utilities directory so that
9382 these components are independent.
9384 Implemented support in the AcpiExec utility (-e switch) to globally
9386 exceptions during control method execution (method is not aborted.)
9388 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
9391 Code and Data Size: The current and previous library sizes for the core
9392 subsystem are shown below. These are the code and data sizes for the
9393 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9395 values do not include any ACPI driver or OSPM code. The debug version of
9397 code includes the debug output trace mechanism and has a much larger code
9398 and data size. Note that these values will vary depending on the
9400 of the compiler and the compiler options used during generation.
9403 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9404 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9406 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9407 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9410 2) iASL Compiler/Disassembler:
9412 Fixed a problem where a CPU stack overflow fault could occur if a
9414 method call was made from within a Return statement.
9416 ----------------------------------------
9417 02 December 2005. Summary of changes for version 20051202:
9419 1) ACPI CA Core Subsystem:
9421 Modified the parsing of control methods to no longer create namespace
9422 objects during the first pass of the parse. Objects are now created only
9423 during the execute phase, at the moment the namespace creation operator
9425 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
9427 should eliminate ALREADY_EXISTS exceptions seen on some machines where
9428 reentrant control methods are protected by an AML mutex. The mutex will
9430 correctly block multiple threads from attempting to create the same
9434 Increased the number of available Owner Ids for namespace object tracking
9435 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
9437 some machines with a large number of ACPI tables (either static or
9440 Fixed a problem with the AcpiExec utility where a fault could occur when
9442 -b switch (batch mode) is used.
9444 Enhanced the namespace dump routine to output the owner ID for each
9447 Code and Data Size: The current and previous library sizes for the core
9448 subsystem are shown below. These are the code and data sizes for the
9449 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9451 values do not include any ACPI driver or OSPM code. The debug version of
9453 code includes the debug output trace mechanism and has a much larger code
9454 and data size. Note that these values will vary depending on the
9456 of the compiler and the compiler options used during generation.
9459 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9460 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9462 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9463 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9466 2) iASL Compiler/Disassembler:
9468 Fixed a parse error during compilation of certain Switch/Case constructs.
9470 simplify the parse, the grammar now allows for multiple Default
9472 and this error is now detected and flagged during the analysis phase.
9474 Disassembler: The disassembly now includes the contents of the original
9475 table header within a comment at the start of the file. This includes the
9476 name and version of the original ASL compiler.
9478 ----------------------------------------
9479 17 November 2005. Summary of changes for version 20051117:
9481 1) ACPI CA Core Subsystem:
9483 Fixed a problem in the AML parser where the method thread count could be
9484 decremented below zero if any errors occurred during the method parse
9486 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
9488 This also fixed a related regression with the mechanism that detects and
9489 corrects methods that cannot properly handle reentrancy (related to the
9490 deployment of the new OwnerId mechanism.)
9492 Eliminated the pre-parsing of control methods (to detect errors) during
9493 table load. Related to the problem above, this was causing unwind issues
9495 any errors occurred during the parse, and it seemed to be overkill. A
9497 load should not be aborted if there are problems with any single control
9498 method, thus rendering this feature rather pointless.
9500 Fixed a problem with the new table-driven resource manager where an
9502 buffer overflow could occur for small resource templates.
9504 Implemented a new external interface, AcpiGetVendorResource. This
9506 will find and return a vendor-defined resource descriptor within a _CRS
9508 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
9511 Removed the length limit (200) on string objects as per the upcoming ACPI
9512 3.0A specification. This affects the following areas of the interpreter:
9514 any implicit conversion of a Buffer to a String, 2) a String object
9516 of the ASL Concatentate operator, 3) the String object result of the ASL
9519 Fixed a problem in the Windows OS interface layer (OSL) where a
9521 on a semaphore object would incorrectly timeout. This allows the
9522 multithreading features of the AcpiExec utility to work properly under
9525 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
9526 the recently added file named "utresrc.c".
9528 Code and Data Size: The current and previous library sizes for the core
9529 subsystem are shown below. These are the code and data sizes for the
9530 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9532 values do not include any ACPI driver or OSPM code. The debug version of
9534 code includes the debug output trace mechanism and has a much larger code
9535 and data size. Note that these values will vary depending on the
9537 of the compiler and the compiler options used during generation.
9540 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9541 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9543 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9544 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9547 2) iASL Compiler/Disassembler:
9549 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
9550 specification. For the iASL compiler, this means that string literals
9552 the source ASL can be of any length.
9554 Enhanced the listing output to dump the AML code for resource descriptors
9555 immediately after the ASL code for each descriptor, instead of in a block
9557 the end of the entire resource template.
9559 Enhanced the compiler debug output to dump the entire original parse tree
9560 constructed during the parse phase, before any transforms are applied to
9562 tree. The transformed tree is dumped also.
9564 ----------------------------------------
9565 02 November 2005. Summary of changes for version 20051102:
9567 1) ACPI CA Core Subsystem:
9569 Modified the subsystem initialization sequence to improve GPE support.
9571 GPE initialization has been split into two parts in order to defer
9573 of the _PRW methods (Power Resources for Wake) until after the hardware
9575 fully initialized and the SCI handler is installed. This allows the _PRW
9576 methods to access fields protected by the Global Lock. This will fix
9578 where a NO_GLOBAL_LOCK exception has been seen during initialization.
9580 Converted the ACPI internal object disassemble and display code within
9582 AML debugger to fully table-driven operation, reducing code size and
9583 increasing maintainability.
9585 Fixed a regression with the ConcatenateResTemplate() ASL operator
9587 in the 20051021 release.
9589 Implemented support for "local" internal ACPI object types within the
9590 debugger "Object" command and the AcpiWalkNamespace external interfaces.
9591 These local types include RegionFields, BankFields, IndexFields, Alias,
9595 Moved common AML resource handling code into a new file, "utresrc.c".
9597 code is shared by both the Resource Manager and the AML Debugger.
9599 Code and Data Size: The current and previous library sizes for the core
9600 subsystem are shown below. These are the code and data sizes for the
9601 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9603 values do not include any ACPI driver or OSPM code. The debug version of
9605 code includes the debug output trace mechanism and has a much larger code
9606 and data size. Note that these values will vary depending on the
9608 of the compiler and the compiler options used during generation.
9611 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9612 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9614 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9615 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9618 2) iASL Compiler/Disassembler:
9620 Fixed a problem with very large initializer lists (more than 4000
9622 for both Buffer and Package objects where the parse stack could overflow.
9624 Enhanced the pre-compile source code scan for non-ASCII characters to
9626 characters within comment fields. The scan is now always performed and is
9628 longer optional, detecting invalid characters within a source file
9629 immediately rather than during the parse phase or later.
9631 Enhanced the ASL grammar definition to force early reductions on all
9633 style grammar elements so that the overall parse stack usage is greatly
9634 reduced. This should improve performance and reduce the possibility of
9638 Eliminated all reduce/reduce conflicts in the iASL parser generation.
9640 with the addition of a %expected statement, the compiler generates from
9641 source with no warnings.
9643 Fixed a possible segment fault in the disassembler if the input filename
9644 does not contain a "dot" extension (Thomas Renninger).
9646 ----------------------------------------
9647 21 October 2005. Summary of changes for version 20051021:
9649 1) ACPI CA Core Subsystem:
9651 Implemented support for the EM64T and other x86-64 processors. This
9652 essentially entails recognizing that these processors support non-aligned
9653 memory transfers. Previously, all 64-bit processors were assumed to lack
9654 hardware support for non-aligned transfers.
9656 Completed conversion of the Resource Manager to nearly full table-driven
9657 operation. Specifically, the resource conversion code (convert AML to
9658 internal format and the reverse) and the debug code to dump internal
9659 resource descriptors are fully table-driven, reducing code and data size
9661 improving maintainability.
9663 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
9665 on 64-bit processors instead of a fixed 32-bit word. (With assistance
9667 Alexey Starikovskiy)
9669 Implemented support within the resource conversion code for the Type-
9670 Specific byte within the various ACPI 3.0 *WordSpace macros.
9672 Fixed some issues within the resource conversion code for the type-
9674 flags for both Memory and I/O address resource descriptors. For Memory,
9675 implemented support for the MTP and TTP flags. For I/O, split the TRS and
9676 TTP flags into two separate fields.
9678 Code and Data Size: The current and previous library sizes for the core
9679 subsystem are shown below. These are the code and data sizes for the
9680 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9682 values do not include any ACPI driver or OSPM code. The debug version of
9684 code includes the debug output trace mechanism and has a much larger code
9685 and data size. Note that these values will vary depending on the
9687 of the compiler and the compiler options used during generation.
9690 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9691 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9693 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9694 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9698 2) iASL Compiler/Disassembler:
9700 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
9702 corresponding ResourceSource string was not also present in a resource
9703 descriptor declaration. This restriction caused problems with existing
9704 AML/ASL code that includes the Index byte without the string. When such
9706 was disassembled, it could not be compiled without modification. Further,
9707 the modified code created a resource template with a different size than
9709 original, breaking code that used fixed offsets into the resource
9713 Removed a recent feature of the disassembler to ignore a lone
9715 byte. This byte is now emitted if present so that the exact AML can be
9716 reproduced when the disassembled code is recompiled.
9718 Improved comments and text alignment for the resource descriptor code
9719 emitted by the disassembler.
9721 Implemented disassembler support for the ACPI 3.0 AccessSize field within
9723 Register() resource descriptor.
9725 ----------------------------------------
9726 30 September 2005. Summary of changes for version 20050930:
9728 1) ACPI CA Core Subsystem:
9730 Completed a major overhaul of the Resource Manager code - specifically,
9731 optimizations in the area of the AML/internal resource conversion code.
9733 code has been optimized to simplify and eliminate duplicated code, CPU
9735 use has been decreased by optimizing function parameters and local
9736 variables, and naming conventions across the manager have been
9738 for clarity and ease of maintenance (this includes function, parameter,
9739 variable, and struct/typedef names.) The update may force changes in some
9740 driver code, depending on how resources are handled by the host OS.
9742 All Resource Manager dispatch and information tables have been moved to a
9743 single location for clarity and ease of maintenance. One new file was
9744 created, named "rsinfo.c".
9746 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
9747 guarantee that the argument is not evaluated twice, making them less
9749 to macro side-effects. However, since there exists the possibility of
9750 additional stack use if a particular compiler cannot optimize them (such
9752 in the debug generation case), the original macros are optionally
9754 Note that some invocations of the return_VALUE macro may now cause size
9755 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
9757 eliminate these. (From Randy Dunlap)
9759 Implemented a new mechanism to enable debug tracing for individual
9761 methods. A new external interface, AcpiDebugTrace, is provided to enable
9762 this mechanism. The intent is to allow the host OS to easily enable and
9763 disable tracing for problematic control methods. This interface can be
9764 easily exposed to a user or debugger interface if desired. See the file
9765 psxface.c for details.
9767 AcpiUtCallocate will now return a valid pointer if a length of zero is
9768 specified - a length of one is used and a warning is issued. This matches
9769 the behavior of AcpiUtAllocate.
9771 Code and Data Size: The current and previous library sizes for the core
9772 subsystem are shown below. These are the code and data sizes for the
9773 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9775 values do not include any ACPI driver or OSPM code. The debug version of
9777 code includes the debug output trace mechanism and has a much larger code
9778 and data size. Note that these values will vary depending on the
9780 of the compiler and the compiler options used during generation.
9783 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9784 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9786 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9787 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9790 2) iASL Compiler/Disassembler:
9792 A remark is issued if the effective compile-time length of a package or
9793 buffer is zero. Previously, this was a warning.
9795 ----------------------------------------
9796 16 September 2005. Summary of changes for version 20050916:
9798 1) ACPI CA Core Subsystem:
9800 Fixed a problem within the Resource Manager where support for the Generic
9801 Register descriptor was not fully implemented. This descriptor is now
9803 recognized, parsed, disassembled, and displayed.
9805 Completely restructured the Resource Manager code to utilize table-driven
9806 dispatch and lookup, eliminating many of the large switch() statements.
9808 reduces overall subsystem code size and code complexity. Affects the
9809 resource parsing and construction, disassembly, and debug dump output.
9811 Cleaned up and restructured the debug dump output for all resource
9812 descriptors. Improved readability of the output and reduced code size.
9814 Fixed a problem where changes to internal data structures caused the
9815 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
9817 Code and Data Size: The current and previous library sizes for the core
9818 subsystem are shown below. These are the code and data sizes for the
9819 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9821 values do not include any ACPI driver or OSPM code. The debug version of
9823 code includes the debug output trace mechanism and has a much larger code
9824 and data size. Note that these values will vary depending on the
9826 of the compiler and the compiler options used during generation.
9829 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9830 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9832 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9833 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9836 2) iASL Compiler/Disassembler:
9838 Updated the disassembler to automatically insert an EndDependentFn()
9840 into the ASL stream if this macro is missing in the original AML code,
9841 simplifying compilation of the resulting ASL module.
9843 Fixed a problem in the disassembler where a disassembled ResourceSource
9844 string (within a large resource descriptor) was not surrounded by quotes
9846 not followed by a comma, causing errors when the resulting ASL module was
9847 compiled. Also, escape sequences within a ResourceSource string are now
9848 handled correctly (especially "\\")
9850 ----------------------------------------
9851 02 September 2005. Summary of changes for version 20050902:
9853 1) ACPI CA Core Subsystem:
9855 Fixed a problem with the internal Owner ID allocation and deallocation
9856 mechanisms for control method execution and recursive method invocation.
9857 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
9858 messages seen on some systems. Recursive method invocation depth is
9859 currently limited to 255. (Alexey Starikovskiy)
9861 Completely eliminated all vestiges of support for the "module-level
9862 executable code" until this support is fully implemented and debugged.
9864 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
9865 some systems that invoke this support.
9867 Fixed a problem within the resource manager code where the transaction
9869 for a 64-bit address descriptor were handled incorrectly in the type-
9872 Consolidated duplicate code within the address descriptor resource
9874 code, reducing overall subsystem code size.
9876 Fixed a fault when using the AML debugger "disassemble" command to
9877 disassemble individual control methods.
9879 Removed references to the "release_current" directory within the Unix
9882 Code and Data Size: The current and previous core subsystem library sizes
9883 are shown below. These are the code and data sizes for the acpica.lib
9884 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
9885 include any ACPI driver or OSPM code. The debug version of the code
9887 the debug output trace mechanism and has a much larger code and data
9889 Note that these values will vary depending on the efficiency of the
9891 and the compiler options used during generation.
9894 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9895 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9897 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9898 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9901 2) iASL Compiler/Disassembler:
9903 Implemented an error check for illegal duplicate values in the interrupt
9905 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
9908 Implemented error checking for the Irq() and IrqNoFlags() macros to
9910 too many values in the interrupt list (16 max) and invalid values in the
9913 The maximum length string literal within an ASL file is now restricted to
9914 200 characters as per the ACPI specification.
9916 Fixed a fault when using the -ln option (generate namespace listing).
9918 Implemented an error check to determine if a DescriptorName within a
9919 resource descriptor has already been used within the current scope.
9921 ----------------------------------------
9922 15 August 2005. Summary of changes for version 20050815:
9924 1) ACPI CA Core Subsystem:
9926 Implemented a full bytewise compare to determine if a table load request
9928 attempting to load a duplicate table. The compare is performed if the
9930 signatures and table lengths match. This will allow different tables with
9931 the same OEM Table ID and revision to be loaded - probably against the
9933 specification, but discovered in the field nonetheless.
9935 Added the changes.txt logfile to each of the zipped release packages.
9937 Code and Data Size: Current and previous core subsystem library sizes are
9938 shown below. These are the code and data sizes for the acpica.lib
9940 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9941 any ACPI driver or OSPM code. The debug version of the code includes the
9942 debug output trace mechanism and has a much larger code and data size.
9944 that these values will vary depending on the efficiency of the compiler
9946 the compiler options used during generation.
9949 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9950 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9952 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9953 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9956 2) iASL Compiler/Disassembler:
9958 Fixed a problem where incorrect AML code could be generated for Package
9959 objects if optimization is disabled (via the -oa switch).
9961 Fixed a problem with where incorrect AML code is generated for variable-
9962 length packages when the package length is not specified and the number
9964 initializer values is greater than 255.
9967 ----------------------------------------
9968 29 July 2005. Summary of changes for version 20050729:
9970 1) ACPI CA Core Subsystem:
9972 Implemented support to ignore an attempt to install/load a particular
9974 table more than once. Apparently there exists BIOS code that repeatedly
9975 attempts to load the same SSDT upon certain events. With assistance from
9976 Venkatesh Pallipadi.
9978 Restructured the main interface to the AML parser in order to correctly
9979 handle all exceptional conditions. This will prevent leakage of the
9981 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
9983 machines. With assistance from Alexey Starikovskiy.
9985 Support for "module level code" has been disabled in this version due to
9987 number of issues that have appeared on various machines. The support can
9989 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
9990 compilation. When the issues are fully resolved, the code will be enabled
9994 Modified the internal functions for debug print support to define the
9995 FunctionName parameter as a (const char *) for compatibility with
9997 built-in macros such as __FUNCTION__, etc.
9999 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10001 Implemented support to display an object count summary for the AML
10003 commands Object and Methods.
10005 Code and Data Size: Current and previous core subsystem library sizes are
10006 shown below. These are the code and data sizes for the acpica.lib
10008 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10009 any ACPI driver or OSPM code. The debug version of the code includes the
10010 debug output trace mechanism and has a much larger code and data size.
10012 that these values will vary depending on the efficiency of the compiler
10014 the compiler options used during generation.
10017 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10018 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10020 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10021 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10024 2) iASL Compiler/Disassembler:
10026 Fixed a regression that appeared in the 20050708 version of the compiler
10027 where an error message was inadvertently emitted for invocations of the
10029 reserved control method.
10031 ----------------------------------------
10032 08 July 2005. Summary of changes for version 20050708:
10034 1) ACPI CA Core Subsystem:
10036 The use of the CPU stack in the debug version of the subsystem has been
10037 considerably reduced. Previously, a debug structure was declared in every
10038 function that used the debug macros. This structure has been removed in
10039 favor of declaring the individual elements as parameters to the debug
10040 functions. This reduces the cumulative stack use during nested execution
10042 ACPI function calls at the cost of a small increase in the code size of
10044 debug version of the subsystem. With assistance from Alexey Starikovskiy
10048 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10049 headers to define a macro that will return the current function name at
10050 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10052 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10053 compiler-dependent header, the function name is saved on the CPU stack
10055 pointer per function.) This mechanism is used because apparently there
10056 exists no standard ANSI-C defined macro that that returns the function
10059 Redesigned and reimplemented the "Owner ID" mechanism used to track
10060 namespace objects created/deleted by ACPI tables and control method
10061 execution. A bitmap is now used to allocate and free the IDs, thus
10063 the wraparound problem present in the previous implementation. The size
10065 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10068 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10070 flag definitions within the headers for the predefined ACPI tables. These
10071 have been replaced by UINT8_BIT in order to increase the code portability
10073 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10074 eliminate bitfields entirely because of a lack of portability.
10076 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10078 is a frequently used function and this improvement increases the
10080 of the entire subsystem (Alexey Starikovskiy).
10082 Fixed several possible memory leaks and the inverse - premature object
10083 deletion (Alexey Starikovskiy).
10085 Code and Data Size: Current and previous core subsystem library sizes are
10086 shown below. These are the code and data sizes for the acpica.lib
10088 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10089 any ACPI driver or OSPM code. The debug version of the code includes the
10090 debug output trace mechanism and has a much larger code and data size.
10092 that these values will vary depending on the efficiency of the compiler
10094 the compiler options used during generation.
10097 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10098 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10100 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10101 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10103 ----------------------------------------
10104 24 June 2005. Summary of changes for version 20050624:
10106 1) ACPI CA Core Subsystem:
10108 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10109 the host-defined cache object. This allows the OSL implementation to
10111 and type this object in any manner desired, simplifying the OSL
10112 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10113 Linux, and should be defined in the OS-specific header file for other
10114 operating systems as required.
10116 Changed the interface to AcpiOsAcquireObject to directly return the
10117 requested object as the function return (instead of ACPI_STATUS.) This
10118 change was made for performance reasons, since this is the purpose of the
10119 interface in the first place. AcpiOsAcquireObject is now similar to the
10120 AcpiOsAllocate interface.
10122 Implemented a new AML debugger command named Businfo. This command
10124 information about all devices that have an associate _PRT object. The
10126 _HID, _UID, and _CID are displayed for these devices.
10128 Modified the initialization sequence in AcpiInitializeSubsystem to call
10130 OSL interface AcpiOslInitialize first, before any local initialization.
10132 change was required because the global initialization now calls OSL
10135 Enhanced the Dump command to display the entire contents of Package
10137 (including all sub-objects and their values.)
10139 Restructured the code base to split some files because of size and/or
10140 because the code logically belonged in a separate file. New files are
10142 below. All makefiles and project files included in the ACPI CA release
10145 utilities/utcache.c /* Local cache interfaces */
10146 utilities/utmutex.c /* Local mutex support */
10147 utilities/utstate.c /* State object support */
10148 interpreter/parser/psloop.c /* Main AML parse loop */
10150 Code and Data Size: Current and previous core subsystem library sizes are
10151 shown below. These are the code and data sizes for the acpica.lib
10153 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10154 any ACPI driver or OSPM code. The debug version of the code includes the
10155 debug output trace mechanism and has a much larger code and data size.
10157 that these values will vary depending on the efficiency of the compiler
10159 the compiler options used during generation.
10162 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10163 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10165 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10166 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10169 2) iASL Compiler/Disassembler:
10171 Fixed a regression introduced in version 20050513 where the use of a
10173 object within a Case() statement caused a compile time exception. The
10174 original behavior has been restored (a Match() operator is emitted.)
10176 ----------------------------------------
10177 17 June 2005. Summary of changes for version 20050617:
10179 1) ACPI CA Core Subsystem:
10181 Moved the object cache operations into the OS interface layer (OSL) to
10183 the host OS to handle these operations if desired (for example, the Linux
10184 OSL will invoke the slab allocator). This support is optional; the
10186 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
10188 code in the ACPI CA core. The new OSL interfaces are shown below. See
10189 utalloc.c for an example implementation, and acpiosxf.h for the exact
10190 interface definitions. With assistance from Alexey Starikovskiy.
10194 AcpiOsAcquireObject
10195 AcpiOsReleaseObject
10197 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
10199 and restore a flags parameter. This fits better with many OS lock models.
10200 Note: the current execution state (interrupt handler or not) is no longer
10201 passed to these interfaces. If necessary, the OSL must determine this
10203 by itself, a simple and fast operation. With assistance from Alexey
10206 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
10207 present if the revision of the RSDP was 2 or greater. According to the
10209 specification, the XSDT is optional in all cases, and the table manager
10210 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
10211 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
10215 Fixed an interpreter problem with the Mid() operator in the case of an
10217 string where the resulting output string is of zero length. It now
10219 returns a valid, null terminated string object instead of a string object
10220 with a null pointer.
10222 Fixed a problem with the control method argument handling to allow a
10224 to an Arg object that already contains an object of type Device. The
10226 object is now correctly overwritten. Previously, an error was returned.
10229 Enhanced the debugger Find command to emit object values in addition to
10231 found object pathnames. The output format is the same as the dump
10235 Enhanced the debugger Set command. It now has the ability to set the
10237 of any Named integer object in the namespace (Previously, only method
10239 and args could be set.)
10241 Code and Data Size: Current and previous core subsystem library sizes are
10242 shown below. These are the code and data sizes for the acpica.lib
10244 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10245 any ACPI driver or OSPM code. The debug version of the code includes the
10246 debug output trace mechanism and has a much larger code and data size.
10248 that these values will vary depending on the efficiency of the compiler
10250 the compiler options used during generation.
10253 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10254 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10256 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10257 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10260 2) iASL Compiler/Disassembler:
10262 Fixed a regression in the disassembler where if/else/while constructs
10264 output incorrectly. This problem was introduced in the previous release
10265 (20050526). This problem also affected the single-step disassembly in the
10268 Fixed a problem where compiling the reserved _OSI method would randomly
10270 rarely) produce compile errors.
10272 Enhanced the disassembler to emit compilable code in the face of
10274 AML resource descriptors. If the optional ResourceSourceIndex is present,
10275 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
10276 disassembly. Otherwise, the resulting code cannot be compiled without
10279 ----------------------------------------
10280 26 May 2005. Summary of changes for version 20050526:
10282 1) ACPI CA Core Subsystem:
10284 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
10285 the module level (not within a control method.) These opcodes are
10287 exactly once at the time the table is loaded. This type of code was legal
10289 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
10291 order to provide backwards compatibility with earlier BIOS
10293 This eliminates the "Encountered executable code at module level" warning
10294 that was previously generated upon detection of such code.
10296 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
10297 inadvertently be generated during the lookup of namespace objects in the
10298 second pass parse of ACPI tables and control methods. It appears that
10300 problem could occur during the resolution of forward references to
10304 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
10305 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
10306 allows the deadlock detection debug code to be compiled out in the normal
10307 case, improving mutex performance (and overall subsystem performance)
10310 Implemented a handful of miscellaneous fixes for possible memory leaks on
10311 error conditions and error handling control paths. These fixes were
10312 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
10314 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
10316 to prevent a fault in this error case.
10318 Code and Data Size: Current and previous core subsystem library sizes are
10319 shown below. These are the code and data sizes for the acpica.lib
10321 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10322 any ACPI driver or OSPM code. The debug version of the code includes the
10323 debug output trace mechanism and has a much larger code and data size.
10325 that these values will vary depending on the efficiency of the compiler
10327 the compiler options used during generation.
10330 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10331 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10333 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10334 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10337 2) iASL Compiler/Disassembler:
10339 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
10340 the module level (not within a control method.) These operators will be
10341 executed once at the time the table is loaded. This type of code was
10343 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
10344 compiler in order to provide backwards compatibility with earlier BIOS
10348 The ACPI integer width (specified via the table revision ID or the -r
10349 override, 32 or 64 bits) is now used internally during compile-time
10351 folding to ensure that constants are truncated to 32 bits if necessary.
10352 Previously, the revision ID value was only emitted in the AML table
10355 An error message is now generated for the Mutex and Method operators if
10357 SyncLevel parameter is outside the legal range of 0 through 15.
10359 Fixed a problem with the Method operator ParameterTypes list handling
10361 3.0). Previously, more than 2 types or 2 arguments generated a syntax
10363 The actual underlying implementation of method argument typechecking is
10364 still under development, however.
10366 ----------------------------------------
10367 13 May 2005. Summary of changes for version 20050513:
10369 1) ACPI CA Core Subsystem:
10371 Implemented support for PCI Express root bridges -- added support for
10373 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
10375 The interpreter now automatically truncates incoming 64-bit constants to
10377 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
10379 also affects the iASL compiler constant folding. (Note: as per below, the
10380 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
10382 Fixed a problem where string and buffer objects with "static" pointers
10383 (pointers to initialization data within an ACPI table) were not handled
10384 consistently. The internal object copy operation now always copies the
10386 to a newly allocated buffer, regardless of whether the source object is
10389 Fixed a problem with the FromBCD operator where an implicit result
10390 conversion was improperly performed while storing the result to the
10392 operand. Since this is an "explicit conversion" operator, the implicit
10393 conversion should never be performed on the output.
10395 Fixed a problem with the CopyObject operator where a copy to an existing
10396 named object did not always completely overwrite the existing object
10398 at name. Specifically, a buffer-to-buffer copy did not delete the
10402 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
10404 structs for consistency.
10406 Code and Data Size: Current and previous core subsystem library sizes are
10407 shown below. These are the code and data sizes for the acpica.lib
10409 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10410 any ACPI driver or OSPM code. The debug version of the code includes the
10411 debug output trace mechanism and has a much larger code and data size.
10413 that these values will vary depending on the efficiency of the compiler
10415 the compiler options used during generation.
10418 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10419 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10420 Current Release: (Same sizes)
10421 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10422 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10425 2) iASL Compiler/Disassembler:
10427 The compiler now emits a warning if an attempt is made to generate a 64-
10429 integer constant from within a 32-bit ACPI table (Revision < 2). The
10431 is truncated to 32 bits.
10433 Fixed a problem with large package objects: if the static length of the
10434 package is greater than 255, the "variable length package" opcode is
10435 emitted. Previously, this caused an error. This requires an update to the
10436 ACPI spec, since it currently (incorrectly) states that packages larger
10438 255 elements are not allowed.
10440 The disassembler now correctly handles variable length packages and
10442 larger than 255 elements.
10444 ----------------------------------------
10445 08 April 2005. Summary of changes for version 20050408:
10447 1) ACPI CA Core Subsystem:
10449 Fixed three cases in the interpreter where an "index" argument to an ASL
10450 function was still (internally) 32 bits instead of the required 64 bits.
10451 This was the Index argument to the Index, Mid, and Match operators.
10453 The "strupr" function is now permanently local (AcpiUtStrupr), since this
10455 not a POSIX-defined function and not present in most kernel-level C
10456 libraries. All references to the C library strupr function have been
10460 Completed the deployment of static functions/prototypes. All prototypes
10462 the static attribute have been moved from the headers to the owning C
10465 Implemented an extract option (-e) for the AcpiBin utility (AML binary
10466 utility). This option allows the utility to extract individual ACPI
10468 from the output of AcpiDmp. It provides the same functionality of the
10469 acpixtract.pl perl script without the worry of setting the correct perl
10470 options. AcpiBin runs on Windows and has not yet been generated/validated
10472 the Linux/Unix environment (but should be soon).
10474 Updated and fixed the table dump option for AcpiBin (-d). This option
10475 converts a single ACPI table to a hex/ascii file, similar to the output
10479 Code and Data Size: Current and previous core subsystem library sizes are
10480 shown below. These are the code and data sizes for the acpica.lib
10482 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10483 any ACPI driver or OSPM code. The debug version of the code includes the
10484 debug output trace mechanism and has a much larger code and data size.
10486 that these values will vary depending on the efficiency of the compiler
10488 the compiler options used during generation.
10491 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10492 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10494 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10495 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10498 2) iASL Compiler/Disassembler:
10500 Disassembler fix: Added a check to ensure that the table length found in
10502 ACPI table header within the input file is not longer than the actual
10504 file size. This indicates some kind of file or table corruption.
10506 ----------------------------------------
10507 29 March 2005. Summary of changes for version 20050329:
10509 1) ACPI CA Core Subsystem:
10511 An error is now generated if an attempt is made to create a Buffer Field
10513 length zero (A CreateField with a length operand of zero.)
10515 The interpreter now issues a warning whenever executable code at the
10517 level is detected during ACPI table load. This will give some idea of the
10518 prevalence of this type of code.
10520 Implemented support for references to named objects (other than control
10521 methods) within package objects.
10523 Enhanced package object output for the debug object. Package objects are
10525 completely dumped, showing all elements.
10527 Enhanced miscellaneous object output for the debug object. Any object can
10528 now be written to the debug object (for example, a device object can be
10529 written, and the type of the object will be displayed.)
10531 The "static" qualifier has been added to all local functions across both
10533 core subsystem and the iASL compiler.
10535 The number of "long" lines (> 80 chars) within the source has been
10536 significantly reduced, by about 1/3.
10538 Cleaned up all header files to ensure that all CA/iASL functions are
10539 prototyped (even static functions) and the formatting is consistent.
10541 Two new header files have been added, acopcode.h and acnames.h.
10543 Removed several obsolete functions that were no longer used.
10545 Code and Data Size: Current and previous core subsystem library sizes are
10546 shown below. These are the code and data sizes for the acpica.lib
10548 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10549 any ACPI driver or OSPM code. The debug version of the code includes the
10550 debug output trace mechanism and has a much larger code and data size.
10552 that these values will vary depending on the efficiency of the compiler
10554 the compiler options used during generation.
10557 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10558 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10560 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10561 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10565 2) iASL Compiler/Disassembler:
10567 Fixed a problem with the resource descriptor generation/support. For the
10568 ResourceSourceIndex and the ResourceSource fields, both must be present,
10570 both must be not present - can't have one without the other.
10572 The compiler now returns non-zero from the main procedure if any errors
10574 occurred during the compilation.
10577 ----------------------------------------
10578 09 March 2005. Summary of changes for version 20050309:
10580 1) ACPI CA Core Subsystem:
10582 The string-to-buffer implicit conversion code has been modified again
10584 a change to the ACPI specification. In order to match the behavior of
10586 other major ACPI implementation, the target buffer is no longer truncated
10588 the source string is smaller than an existing target buffer. This change
10589 requires an update to the ACPI spec, and should eliminate the recent
10590 AE_AML_BUFFER_LIMIT issues.
10592 The "implicit return" support was rewritten to a new algorithm that
10594 the general case. Rather than attempt to determine when a method is about
10596 exit, the result of every ASL operator is saved momentarily until the
10598 next ASL operator is executed. Therefore, no matter how the method exits,
10599 there will always be a saved implicit return value. This feature is only
10600 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
10602 AE_AML_NO_RETURN_VALUE errors when enabled.
10604 Implemented implicit conversion support for the predicate (operand) of
10606 If, Else, and While operators. String and Buffer arguments are
10608 converted to Integers.
10610 Changed the string-to-integer conversion behavior to match the new ACPI
10611 errata: "If no integer object exists, a new integer is created. The ASCII
10612 string is interpreted as a hexadecimal constant. Each string character is
10613 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
10614 with the first character as the most significant digit, and ending with
10616 first non-hexadecimal character or end-of-string." This means that the
10618 non-hex character terminates the conversion and this is the code that was
10621 Fixed a problem where the ObjectType operator would fail (fault) when
10623 on an Index of a Package which pointed to a null package element. The
10624 operator now properly returns zero (Uninitialized) in this case.
10626 Fixed a problem where the While operator used excessive memory by not
10627 properly popping the result stack during execution. There was no memory
10629 after execution, however. (Code provided by Valery Podrezov.)
10631 Fixed a problem where references to control methods within Package
10633 caused the method to be invoked, instead of producing a reference object
10634 pointing to the method.
10636 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
10638 improve performance and reduce code size. (Code provided by Alexey
10641 Code and Data Size: Current and previous core subsystem library sizes are
10642 shown below. These are the code and data sizes for the acpica.lib
10644 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10645 any ACPI driver or OSPM code. The debug version of the code includes the
10646 debug output trace mechanism and has a much larger code and data size.
10648 that these values will vary depending on the efficiency of the compiler
10650 the compiler options used during generation.
10653 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10654 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10656 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10657 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10660 2) iASL Compiler/Disassembler:
10662 Fixed a problem with the Return operator with no arguments. Since the AML
10663 grammar for the byte encoding requires an operand for the Return opcode,
10665 compiler now emits a Return(Zero) for this case. An ACPI specification
10666 update has been written for this case.
10668 For tables other than the DSDT, namepath optimization is automatically
10669 disabled. This is because SSDTs can be loaded anywhere in the namespace,
10671 compiler has no knowledge of where, and thus cannot optimize namepaths.
10673 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
10674 inadvertently omitted from the ACPI specification, and will require an
10675 update to the spec.
10677 The source file scan for ASCII characters is now optional (-a). This
10679 was made because some vendors place non-ascii characters within comments.
10680 However, the scan is simply a brute-force byte compare to ensure all
10681 characters in the file are in the range 0x00 to 0x7F.
10683 Fixed a problem with the CondRefOf operator where the compiler was
10684 inappropriately checking for the existence of the target. Since the point
10686 the operator is to check for the existence of the target at run-time, the
10687 compiler no longer checks for the target existence.
10689 Fixed a problem where errors generated from the internal AML interpreter
10690 during constant folding were not handled properly, causing a fault.
10692 Fixed a problem with overly aggressive range checking for the Stall
10693 operator. The valid range (max 255) is now only checked if the operand is
10695 type Integer. All other operand types cannot be statically checked.
10697 Fixed a problem where control method references within the RefOf,
10699 and ObjectType operators were not treated properly. They are now treated
10701 actual references, not method invocations.
10703 Fixed and enhanced the "list namespace" option (-ln). This option was
10705 a number of releases ago.
10707 Improved error handling for the Field, IndexField, and BankField
10709 The compiler now cleanly reports and recovers from errors in the field
10710 component (FieldUnit) list.
10712 Fixed a disassembler problem where the optional ResourceDescriptor fields
10713 TRS and TTP were not always handled correctly.
10715 Disassembler - Comments in output now use "//" instead of "/*"
10717 ----------------------------------------
10718 28 February 2005. Summary of changes for version 20050228:
10720 1) ACPI CA Core Subsystem:
10722 Fixed a problem where the result of an Index() operator (an object
10723 reference) must increment the reference count on the target object for
10725 life of the object reference.
10727 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
10728 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
10730 resource descriptors.
10732 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
10733 Space Descriptor" string, indicating interpreter support for the
10737 Implemented header support for the new ACPI 3.0 FADT flag bits.
10739 Implemented header support for the new ACPI 3.0 PCI Express bits for the
10741 status/enable registers.
10743 Updated header support for the MADT processor local Apic struct and MADT
10744 platform interrupt source struct for new ACPI 3.0 fields.
10746 Implemented header support for the SRAT and SLIT ACPI tables.
10748 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
10752 Code and Data Size: Current and previous core subsystem library sizes are
10753 shown below. These are the code and data sizes for the acpica.lib
10755 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10756 any ACPI driver or OSPM code. The debug version of the code includes the
10757 debug output trace mechanism and has a much larger code and data size.
10759 that these values will vary depending on the efficiency of the compiler
10761 the compiler options used during generation.
10764 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10765 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10767 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10768 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10771 2) iASL Compiler/Disassembler:
10773 Fixed a problem with the internal 64-bit String-to-integer conversion
10775 strings less than two characters long.
10777 Fixed a problem with constant folding where the result of the Index()
10778 operator can not be considered a constant. This means that Index() cannot
10780 a type3 opcode and this will require an update to the ACPI specification.
10782 Disassembler: Implemented support for the TTP, MTP, and TRS resource
10783 descriptor fields. These fields were inadvertently ignored and not output
10785 the disassembly of the resource descriptor.
10788 ----------------------------------------
10789 11 February 2005. Summary of changes for version 20050211:
10791 1) ACPI CA Core Subsystem:
10793 Implemented ACPI 3.0 support for implicit conversion within the Match()
10794 operator. MatchObjects can now be of type integer, buffer, or string
10796 of just type integer. Package elements are implicitly converted to the
10798 of the MatchObject. This change aligns the behavior of Match() with the
10799 behavior of the other logical operators (LLess(), etc.) It also requires
10801 errata change to the ACPI specification as this support was intended for
10802 ACPI 3.0, but was inadvertently omitted.
10804 Fixed a problem with the internal implicit "to buffer" conversion.
10806 that are converted to buffers will cause buffer truncation if the string
10808 smaller than the target buffer. Integers that are converted to buffers
10810 not cause buffer truncation, only zero extension (both as per the ACPI
10811 spec.) The problem was introduced when code was added to truncate the
10812 buffer, but this should not be performed in all cases, only the string
10815 Fixed a problem with the Buffer and Package operators where the
10817 would get confused if two such operators were used as operands to an ASL
10818 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
10819 stack was not being popped after the execution of these operators,
10821 in an AE_NO_RETURN_VALUE exception.
10823 Fixed a problem with constructs of the form Store(Index(...),...). The
10824 reference object returned from Index was inadvertently resolved to an
10826 value. This problem was introduced in version 20050114 when the behavior
10828 Store() was modified to restrict the object types that can be used as the
10829 source operand (to match the ACPI specification.)
10831 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
10833 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
10835 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
10837 Code and Data Size: Current and previous core subsystem library sizes are
10838 shown below. These are the code and data sizes for the acpica.lib
10840 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10841 any ACPI driver or OSPM code. The debug version of the code includes the
10842 debug output trace mechanism and has a much larger code and data size.
10844 that these values will vary depending on the efficiency of the compiler
10846 the compiler options used during generation.
10849 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10850 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10852 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10853 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10856 2) iASL Compiler/Disassembler:
10858 Fixed a code generation problem in the constant folding optimization code
10859 where incorrect code was generated if a constant was reduced to a buffer
10860 object (i.e., a reduced type 5 opcode.)
10862 Fixed a typechecking problem for the ToBuffer operator. Caused by an
10863 incorrect return type in the internal opcode information table.
10865 ----------------------------------------
10866 25 January 2005. Summary of changes for version 20050125:
10868 1) ACPI CA Core Subsystem:
10870 Fixed a recently introduced problem with the Global Lock where the
10871 underlying semaphore was not created. This problem was introduced in
10872 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
10873 Acquire() operation on _GL.
10875 The local object cache is now optional, and is disabled by default. Both
10876 AcpiExec and the iASL compiler enable the cache because they run in user
10877 mode and this enhances their performance. #define
10878 ACPI_ENABLE_OBJECT_CACHE
10879 to enable the local cache.
10881 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
10883 optional "implicit return" support where an error was returned if no
10885 object was expected, but one was implicitly returned. AE_OK is now
10887 in this case and the implicitly returned object is deleted.
10888 AcpiUtEvaluateObject is only occasionally used, and only to execute
10890 methods such as _STA and _INI where the return type is known up front.
10892 Fixed a few issues with the internal convert-to-integer code. It now
10894 an error if an attempt is made to convert a null string, a string of only
10895 blanks/tabs, or a zero-length buffer. This affects both implicit
10897 and explicit conversion via the ToInteger() operator.
10899 The internal debug code in AcpiUtAcquireMutex has been commented out. It
10901 not needed for normal operation and should increase the performance of
10903 entire subsystem. The code remains in case it is needed for debug
10907 The AcpiExec source and makefile are included in the Unix/Linux package
10911 Code and Data Size: Current and previous core subsystem library sizes are
10912 shown below. These are the code and data sizes for the acpica.lib
10914 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10915 any ACPI driver or OSPM code. The debug version of the code includes the
10916 debug output trace mechanism and has a much larger code and data size.
10918 that these values will vary depending on the efficiency of the compiler
10920 the compiler options used during generation.
10923 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10924 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10926 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10927 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10929 2) iASL Compiler/Disassembler:
10931 Switch/Case support: A warning is now issued if the type of the Switch
10933 cannot be determined at compile time. For example, Switch(Arg0) will
10934 generate the warning, and the type is assumed to be an integer. As per
10936 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
10940 Switch/Case support: Implemented support for buffer and string objects as
10941 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
10942 buffers and strings.
10944 Switch/Case support: The emitted code for the LEqual() comparisons now
10946 the switch value as the first operand, not the second. The case value is
10948 the second operand, and this allows the case value to be implicitly
10949 converted to the type of the switch value, not the other way around.
10951 Switch/Case support: Temporary variables are now emitted immediately
10953 the control method, not at the global level. This means that there are
10955 36 temps available per-method, not 36 temps per-module as was the case
10957 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
10959 ----------------------------------------
10960 14 January 2005. Summary of changes for version 20050114:
10962 Added 2005 copyright to all module headers. This affects every module in
10963 the core subsystem, iASL compiler, and the utilities.
10965 1) ACPI CA Core Subsystem:
10967 Fixed an issue with the String-to-Buffer conversion code where the string
10968 null terminator was not included in the buffer after conversion, but
10970 is existing ASL that assumes the string null terminator is included. This
10972 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
10973 introduced in the previous version when the code was updated to correctly
10974 set the converted buffer size as per the ACPI specification. The ACPI
10976 is ambiguous and will be updated to specify that the null terminator must
10978 included in the converted buffer. This also affects the ToBuffer() ASL
10981 Fixed a problem with the Mid() ASL/AML operator where it did not work
10982 correctly on Buffer objects. Newly created sub-buffers were not being
10987 Fixed a problem in AcpiTbFindTable where incorrect string compares were
10988 performed on the OemId and OemTableId table header fields. These fields
10990 not null terminated, so strncmp is now used instead of strcmp.
10992 Implemented a restriction on the Store() ASL/AML operator to align the
10993 behavior with the ACPI specification. Previously, any object could be
10995 as the source operand. Now, the only objects that may be used are
10997 Buffers, Strings, Packages, Object References, and DDB Handles. If
10998 necessary, the original behavior can be restored by enabling the
10999 EnableInterpreterSlack flag.
11001 Enhanced the optional "implicit return" support to allow an implicit
11003 value from methods that are invoked externally via the AcpiEvaluateObject
11004 interface. This enables implicit returns from the _STA and _INI methods,
11007 Changed the Revision() ASL/AML operator to return the current version of
11009 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11011 the supported ACPI version (This is the function of the _REV method).
11013 Updated the _REV predefined method to return the currently supported
11017 Implemented batch mode option for the AcpiExec utility (-b).
11019 Code and Data Size: Current and previous core subsystem library sizes are
11020 shown below. These are the code and data sizes for the acpica.lib
11022 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11023 any ACPI driver or OSPM code. The debug version of the code includes the
11024 debug output trace mechanism and has a much larger code and data size.
11026 that these values will vary depending on the efficiency of the compiler
11028 the compiler options used during generation.
11031 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11032 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11034 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11035 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11037 ----------------------------------------
11038 10 December 2004. Summary of changes for version 20041210:
11040 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11041 ACPI CA core subsystem.
11043 1) ACPI CA Core Subsystem:
11045 Fixed a problem in the ToDecimalString operator where the resulting
11047 length was incorrectly calculated. The length is now calculated exactly,
11048 eliminating incorrect AE_STRING_LIMIT exceptions.
11050 Fixed a problem in the ToHexString operator to allow a maximum 200
11052 string to be produced.
11054 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11056 routine where the length of the resulting buffer was not truncated to the
11057 new size (if the target buffer already existed).
11059 Code and Data Size: Current and previous core subsystem library sizes are
11060 shown below. These are the code and data sizes for the acpica.lib
11062 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11063 any ACPI driver or OSPM code. The debug version of the code includes the
11064 debug output trace mechanism and has a much larger code and data size.
11066 that these values will vary depending on the efficiency of the compiler
11068 the compiler options used during generation.
11071 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11072 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11074 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11075 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11078 2) iASL Compiler/Disassembler:
11080 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11081 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11082 Includes support in the disassembler.
11084 Implemented support for the new (ACPI 3.0) parameter to the Register
11088 Fixed a problem where the _HE resource name for the Interrupt macro was
11089 referencing bit 0 instead of bit 1.
11091 Implemented check for maximum 255 interrupts in the Interrupt macro.
11093 Fixed a problem with the predefined resource descriptor names where
11094 incorrect AML code was generated if the offset within the resource buffer
11095 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11096 but did not update the surrounding package lengths.
11098 Changes to the Dma macro: All channels within the channel list must be
11100 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11101 optional (default is BusMaster).
11103 Implemented check for maximum 7 data bytes for the VendorShort macro.
11105 The ReadWrite parameter is now optional for the Memory32 and similar
11108 ----------------------------------------
11109 03 December 2004. Summary of changes for version 20041203:
11111 1) ACPI CA Core Subsystem:
11113 The low-level field insertion/extraction code (exfldio) has been
11115 rewritten to eliminate unnecessary complexity, bugs, and boundary
11118 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
11120 operators where the input operand could be inadvertently deleted if no
11121 conversion was necessary (e.g., if the input to ToInteger was an Integer
11124 Fixed a problem with the ToDecimalString and ToHexString where an
11126 exception code was returned if the resulting string would be > 200 chars.
11127 AE_STRING_LIMIT is now returned.
11129 Fixed a problem with the Concatenate operator where AE_OK was always
11130 returned, even if the operation failed.
11132 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
11133 semaphores to be allocated.
11135 Code and Data Size: Current and previous core subsystem library sizes are
11136 shown below. These are the code and data sizes for the acpica.lib
11138 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11139 any ACPI driver or OSPM code. The debug version of the code includes the
11140 debug output trace mechanism and has a much larger code and data size.
11142 that these values will vary depending on the efficiency of the compiler
11144 the compiler options used during generation.
11147 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11148 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11150 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11151 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11154 2) iASL Compiler/Disassembler:
11156 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
11157 recently introduced in 20041119.
11159 Fixed a problem with the ToUUID macro where the upper nybble of each
11161 byte was inadvertently set to zero.
11163 ----------------------------------------
11164 19 November 2004. Summary of changes for version 20041119:
11166 1) ACPI CA Core Subsystem:
11168 Fixed a problem in the internal ConvertToInteger routine where new
11170 were not truncated to 32 bits for 32-bit ACPI tables. This routine
11172 buffers and strings to integers.
11174 Implemented support to store a value to an Index() on a String object.
11176 is an ACPI 2.0 feature that had not yet been implemented.
11178 Implemented new behavior for storing objects to individual package
11180 (via the Index() operator). The previous behavior was to invoke the
11182 conversion rules if an object was already present at the index. The new
11183 behavior is to simply delete any existing object and directly store the
11185 object. Although the ACPI specification seems unclear on this subject,
11187 ACPI implementations behave in this manner. (This is the root of the
11188 AE_BAD_HEX_CONSTANT issue.)
11190 Modified the RSDP memory scan mechanism to support the extended checksum
11192 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
11193 RSDP signature is found with a valid checksum.
11195 Code and Data Size: Current and previous core subsystem library sizes are
11196 shown below. These are the code and data sizes for the acpica.lib
11198 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11199 any ACPI driver or OSPM code. The debug version of the code includes the
11200 debug output trace mechanism and has a much larger code and data size.
11202 that these values will vary depending on the efficiency of the compiler
11204 the compiler options used during generation.
11207 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11208 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11210 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11211 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11214 2) iASL Compiler/Disassembler:
11216 Fixed a missing semicolon in the aslcompiler.y file.
11218 ----------------------------------------
11219 05 November 2004. Summary of changes for version 20041105:
11221 1) ACPI CA Core Subsystem:
11223 Implemented support for FADT revision 2. This was an interim table
11225 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
11227 Implemented optional support to allow uninitialized LocalX and ArgX
11228 variables in a control method. The variables are initialized to an
11230 object with a value of zero. This support is enabled by setting the
11231 AcpiGbl_EnableInterpreterSlack flag to TRUE.
11233 Implemented support for Integer objects for the SizeOf operator. Either
11235 or 8 is returned, depending on the current integer size (32-bit or 64-
11237 depending on the parent table revision).
11239 Fixed a problem in the implementation of the SizeOf and ObjectType
11241 where the operand was resolved to a value too early, causing incorrect
11242 return values for some objects.
11244 Fixed some possible memory leaks during exceptional conditions.
11246 Code and Data Size: Current and previous core subsystem library sizes are
11247 shown below. These are the code and data sizes for the acpica.lib
11249 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11250 any ACPI driver or OSPM code. The debug version of the code includes the
11251 debug output trace mechanism and has a much larger code and data size.
11253 that these values will vary depending on the efficiency of the compiler
11255 the compiler options used during generation.
11258 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11259 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11261 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11262 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11265 2) iASL Compiler/Disassembler:
11267 Implemented support for all ACPI 3.0 reserved names and methods.
11269 Implemented all ACPI 3.0 grammar elements in the front-end, including
11270 support for semicolons.
11272 Implemented the ACPI 3.0 Function() and ToUUID() macros
11274 Fixed a problem in the disassembler where a Scope() operator would not be
11275 emitted properly if the target of the scope was in another table.
11277 ----------------------------------------
11278 15 October 2004. Summary of changes for version 20041015:
11280 Note: ACPI CA is currently undergoing an in-depth and complete formal
11281 evaluation to test/verify the following areas. Other suggestions are
11282 welcome. This will result in an increase in the frequency of releases and
11283 the number of bug fixes in the next few months.
11284 - Functional tests for all ASL/AML operators
11285 - All implicit/explicit type conversions
11286 - Bit fields and operation regions
11287 - 64-bit math support and 32-bit-only "truncated" math support
11288 - Exceptional conditions, both compiler and interpreter
11289 - Dynamic object deletion and memory leaks
11290 - ACPI 3.0 support when implemented
11291 - External interfaces to the ACPI subsystem
11294 1) ACPI CA Core Subsystem:
11296 Fixed two alignment issues on 64-bit platforms - within debug statements
11298 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
11300 field within the non-aligned ACPI generic address structure.
11302 Fixed a problem in the Increment and Decrement operators where incorrect
11303 operand resolution could result in the inadvertent modification of the
11304 original integer when the integer is passed into another method as an
11305 argument and the arg is then incremented/decremented.
11307 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
11309 BCD number were truncated during conversion.
11311 Fixed a problem in the ToDecimal operator where the length of the
11313 string could be set incorrectly too long if the input operand was a
11317 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
11319 within a buffer would prematurely terminate a compare between buffer
11322 Added a check for string overflow (>200 characters as per the ACPI
11323 specification) during the Concatenate operator with two string operands.
11325 Code and Data Size: Current and previous core subsystem library sizes are
11326 shown below. These are the code and data sizes for the acpica.lib
11328 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11329 any ACPI driver or OSPM code. The debug version of the code includes the
11330 debug output trace mechanism and has a much larger code and data size.
11332 that these values will vary depending on the efficiency of the compiler
11334 the compiler options used during generation.
11337 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11338 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11340 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11341 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11345 2) iASL Compiler/Disassembler:
11347 Allow the use of the ObjectType operator on uninitialized Locals and Args
11348 (returns 0 as per the ACPI specification).
11350 Fixed a problem where the compiler would fault if there was a syntax
11352 in the FieldName of all of the various CreateXXXField operators.
11354 Disallow the use of lower case letters within the EISAID macro, as per
11356 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
11358 U is an uppercase letter and N is a hex digit.
11361 ----------------------------------------
11362 06 October 2004. Summary of changes for version 20041006:
11364 1) ACPI CA Core Subsystem:
11366 Implemented support for the ACPI 3.0 Timer operator. This ASL function
11367 implements a 64-bit timer with 100 nanosecond granularity.
11369 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
11370 implement the ACPI 3.0 Timer operator. This allows the host OS to
11372 the timer with the best clock available. Also, it keeps the core
11374 out of the clock handling business, since the host OS (usually) performs
11377 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
11378 functions use a 64-bit address which is part of the packed ACPI Generic
11379 Address Structure. Since the structure is non-aligned, the alignment
11381 are now used to extract the address to a local variable before use.
11383 Fixed a problem where the ToInteger operator assumed all input strings
11385 hexadecimal. The operator now handles both decimal strings and hex
11387 (prefixed with "0x").
11389 Fixed a problem where the string length in the string object created as a
11390 result of the internal ConvertToString procedure could be incorrect. This
11391 potentially affected all implicit conversions and also the
11393 and ToHexString operators.
11395 Fixed two problems in the ToString operator. If the length parameter was
11396 zero, an incorrect string object was created and the value of the input
11397 length parameter was inadvertently changed from zero to Ones.
11399 Fixed a problem where the optional ResourceSource string in the
11401 resource macro was ignored.
11403 Simplified the interfaces to the internal division functions, reducing
11405 size and complexity.
11407 Code and Data Size: Current and previous core subsystem library sizes are
11408 shown below. These are the code and data sizes for the acpica.lib
11410 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11411 any ACPI driver or OSPM code. The debug version of the code includes the
11412 debug output trace mechanism and has a much larger code and data size.
11414 that these values will vary depending on the efficiency of the compiler
11416 the compiler options used during generation.
11419 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11420 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11422 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11423 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11426 2) iASL Compiler/Disassembler:
11428 Implemented support for the ACPI 3.0 Timer operator.
11430 Fixed a problem where the Default() operator was inadvertently ignored in
11432 Switch/Case block. This was a problem in the translation of the Switch
11433 statement to If...Else pairs.
11435 Added support to allow a standalone Return operator, with no parentheses
11439 Fixed a problem with code generation for the ElseIf operator where the
11440 translated Else...If parse tree was improperly constructed leading to the
11443 ----------------------------------------
11444 22 September 2004. Summary of changes for version 20040922:
11446 1) ACPI CA Core Subsystem:
11448 Fixed a problem with the implementation of the LNot() operator where
11450 was not returned for the TRUE case. Changed the code to return Ones
11452 of (!Arg) which was usually 1. This change affects iASL constant folding
11454 this operator also.
11456 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
11458 initialized properly -- Now zero the entire buffer in this case where the
11459 buffer already exists.
11461 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
11462 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
11463 related code considerably. This will require changes/updates to all OS
11464 interface layers (OSLs.)
11466 Implemented a new external interface, AcpiInstallExceptionHandler, to
11468 a system exception handler to be installed. This handler is invoked upon
11470 run-time exception that occurs during control method execution.
11472 Added support for the DSDT in AcpiTbFindTable. This allows the
11473 DataTableRegion() operator to access the local copy of the DSDT.
11475 Code and Data Size: Current and previous core subsystem library sizes are
11476 shown below. These are the code and data sizes for the acpica.lib
11478 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11479 any ACPI driver or OSPM code. The debug version of the code includes the
11480 debug output trace mechanism and has a much larger code and data size.
11482 that these values will vary depending on the efficiency of the compiler
11484 the compiler options used during generation.
11487 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11488 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11490 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11491 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11494 2) iASL Compiler/Disassembler:
11496 Fixed a problem with constant folding and the LNot operator. LNot was
11497 returning 1 in the TRUE case, not Ones as per the ACPI specification.
11499 could result in the generation of an incorrect folded/reduced constant.
11501 End-Of-File is now allowed within a "//"-style comment. A parse error no
11502 longer occurs if such a comment is at the very end of the input ASL
11506 Implemented the "-r" option to override the Revision in the table header.
11507 The initial use of this option will be to simplify the evaluation of the
11509 interpreter by allowing a single ASL source module to be compiled for
11511 32-bit or 64-bit integers.
11514 ----------------------------------------
11515 27 August 2004. Summary of changes for version 20040827:
11517 1) ACPI CA Core Subsystem:
11519 - Implemented support for implicit object conversion in the non-numeric
11520 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
11522 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
11523 the second operand is implicitly converted on the fly to match the type
11525 the first operand. For example:
11527 LEqual (Source1, Source2)
11529 Source1 and Source2 must each evaluate to an integer, a string, or a
11531 The data type of Source1 dictates the required type of Source2. Source2
11533 implicitly converted if necessary to match the type of Source1.
11535 - Updated and corrected the behavior of the string conversion support.
11537 rules concerning conversion of buffers to strings (according to the ACPI
11538 specification) are as follows:
11540 ToDecimalString - explicit byte-wise conversion of buffer to string of
11541 decimal values (0-255) separated by commas. ToHexString - explicit byte-
11543 conversion of buffer to string of hex values (0-FF) separated by commas.
11544 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
11546 copy with no transform except NULL terminated. Any other implicit buffer-
11548 string conversion - byte-wise conversion of buffer to string of hex
11550 (0-FF) separated by spaces.
11552 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
11554 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
11556 one byte too short in the case of a node in the root scope. This could
11557 cause a fault during debug output.
11559 - Code and Data Size: Current and previous core subsystem library sizes
11561 shown below. These are the code and data sizes for the acpica.lib
11563 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11564 any ACPI driver or OSPM code. The debug version of the code includes the
11565 debug output trace mechanism and has a much larger code and data size.
11567 that these values will vary depending on the efficiency of the compiler
11569 the compiler options used during generation.
11572 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11573 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11575 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11576 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11579 2) iASL Compiler/Disassembler:
11581 - Fixed a Linux generation error.
11584 ----------------------------------------
11585 16 August 2004. Summary of changes for version 20040816:
11587 1) ACPI CA Core Subsystem:
11589 Designed and implemented support within the AML interpreter for the so-
11590 called "implicit return". This support returns the result of the last
11592 operation within a control method, in the absence of an explicit Return()
11593 operator. A few machines depend on this behavior, even though it is not
11594 explicitly supported by the ASL language. It is optional support that
11596 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
11598 Removed support for the PCI_Config address space from the internal low
11600 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
11601 support was not used internally, and would not work correctly anyway
11603 the PCI bus number and segment number were not supported. There are
11604 separate interfaces for PCI configuration space access because of the
11608 Code and Data Size: Current and previous core subsystem library sizes are
11609 shown below. These are the code and data sizes for the acpica.lib
11611 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11612 any ACPI driver or OSPM code. The debug version of the code includes the
11613 debug output trace mechanism and has a much larger code and data size.
11615 that these values will vary depending on the efficiency of the compiler
11617 the compiler options used during generation.
11620 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11621 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11623 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11624 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11627 2) iASL Compiler/Disassembler:
11629 Fixed a problem where constants in ASL expressions at the root level (not
11630 within a control method) could be inadvertently truncated during code
11631 generation. This problem was introduced in the 20040715 release.
11634 ----------------------------------------
11635 15 July 2004. Summary of changes for version 20040715:
11637 1) ACPI CA Core Subsystem:
11639 Restructured the internal HW GPE interfaces to pass/track the current
11641 of interrupts (enabled/disabled) in order to avoid possible deadlock and
11642 increase flexibility of the interfaces.
11644 Implemented a "lexicographical compare" for String and Buffer objects
11646 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
11648 as per further clarification to the ACPI specification. Behavior is
11650 to C library "strcmp".
11652 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
11653 external function. In the 32-bit non-debug case, the stack use has been
11654 reduced from 168 bytes to 32 bytes.
11656 Deployed a new run-time configuration flag,
11657 AcpiGbl_EnableInterpreterSlack,
11658 whose purpose is to allow the AML interpreter to forgive certain bad AML
11659 constructs. Default setting is FALSE.
11661 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
11663 support code. If enabled, it allows field access to go beyond the end of
11665 region definition if the field is within the region length rounded up to
11667 next access width boundary (a common coding error.)
11669 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
11670 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
11672 symbols are lowercased by the latest version of the AcpiSrc tool.
11674 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
11675 rename "Register" to simply "Reg" to prevent certain compilers from
11678 Code and Data Size: Current and previous core subsystem library sizes are
11679 shown below. These are the code and data sizes for the acpica.lib
11681 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11682 any ACPI driver or OSPM code. The debug version of the code includes the
11683 debug output trace mechanism and has a much larger code and data size.
11685 that these values will vary depending on the efficiency of the compiler
11687 the compiler options used during generation.
11690 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11691 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11693 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11694 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11697 2) iASL Compiler/Disassembler:
11699 Implemented full support for Package objects within the Case() operator.
11700 Note: The Break() operator is currently not supported within Case blocks
11701 (TermLists) as there is some question about backward compatibility with
11706 Fixed a problem where complex terms were not supported properly within
11710 Eliminated extraneous warning for compiler-emitted reserved names of the
11711 form "_T_x". (Used in Switch/Case operators.)
11713 Eliminated optimization messages for "_T_x" objects and small constants
11714 within the DefinitionBlock operator.
11717 ----------------------------------------
11718 15 June 2004. Summary of changes for version 20040615:
11720 1) ACPI CA Core Subsystem:
11722 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11724 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11727 All directory names in the entire source package are lower case, as they
11728 were in earlier releases.
11730 Implemented "Disassemble" command in the AML debugger that will
11732 a single control method.
11734 Code and Data Size: Current and previous core subsystem library sizes are
11735 shown below. These are the code and data sizes for the acpica.lib
11737 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11738 any ACPI driver or OSPM code. The debug version of the code includes the
11739 debug output trace mechanism and has a much larger code and data size.
11741 that these values will vary depending on the efficiency of the compiler
11743 the compiler options used during generation.
11746 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11747 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11750 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11751 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11754 2) iASL Compiler/Disassembler:
11756 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11758 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11761 All directory names in the entire source package are lower case, as they
11762 were in earlier releases.
11764 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
11767 Fixed an issue with the Windows version of the compiler where later
11769 of Windows place the FADT in the registry under the name "FADT" and not
11770 "FACP" as earlier versions did. This applies when using the -g or -
11771 d<nofilename> options. The compiler now looks for both strings as
11774 Fixed a problem with compiler namepath optimization where a namepath
11776 the Scope() operator could not be optimized if the namepath was a subpath
11778 the current scope path.
11780 ----------------------------------------
11781 27 May 2004. Summary of changes for version 20040527:
11783 1) ACPI CA Core Subsystem:
11785 Completed a new design and implementation for EBDA (Extended BIOS Data
11787 support in the RSDP scan code. The original code improperly scanned for
11789 EBDA by simply scanning from memory location 0 to 0x400. The correct
11791 is to first obtain the EBDA pointer from within the BIOS data area, then
11792 scan 1K of memory starting at the EBDA pointer. There appear to be few
11794 any machines that place the RSDP in the EBDA, however.
11796 Integrated a fix for a possible fault during evaluation of BufferField
11797 arguments. Obsolete code that was causing the problem was removed.
11799 Found and fixed a problem in the Field Support Code where data could be
11800 corrupted on a bit field read that starts on an aligned boundary but does
11801 not end on an aligned boundary. Merged the read/write "datum length"
11802 calculation code into a common procedure.
11804 Rolled in a couple of changes to the FreeBSD-specific header.
11807 Code and Data Size: Current and previous core subsystem library sizes are
11808 shown below. These are the code and data sizes for the acpica.lib
11810 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11811 any ACPI driver or OSPM code. The debug version of the code includes the
11812 debug output trace mechanism and has a much larger code and data size.
11814 that these values will vary depending on the efficiency of the compiler
11816 the compiler options used during generation.
11819 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11820 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11822 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11823 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11826 2) iASL Compiler/Disassembler:
11828 Fixed a generation warning produced by some overly-verbose compilers for
11832 ----------------------------------------
11833 14 May 2004. Summary of changes for version 20040514:
11835 1) ACPI CA Core Subsystem:
11837 Fixed a problem where hardware GPE enable bits sometimes not set properly
11838 during and after GPE method execution. Result of 04/27 changes.
11840 Removed extra "clear all GPEs" when sleeping/waking.
11842 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
11843 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
11845 the new AcpiEv* calls as appropriate.
11847 ACPI_OS_NAME was removed from the OS-specific headers. The default name
11849 now "Microsoft Windows NT" for maximum compatibility. However this can
11851 changed by modifying the acconfig.h file.
11853 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
11854 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
11856 Run _INI methods on ThermalZone objects. This is against the ACPI
11857 specification, but there is apparently ASL code in the field that has
11859 _INI methods, and apparently "other" AML interpreters execute them.
11861 Performed a full 16/32/64 bit lint that resulted in some small changes.
11863 Added a sleep simulation command to the AML debugger to test sleep code.
11865 Code and Data Size: Current and previous core subsystem library sizes are
11866 shown below. These are the code and data sizes for the acpica.lib
11868 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11869 any ACPI driver or OSPM code. The debug version of the code includes the
11870 debug output trace mechanism and has a much larger code and data size.
11872 that these values will vary depending on the efficiency of the compiler
11874 the compiler options used during generation.
11877 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11878 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11880 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11881 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11883 ----------------------------------------
11884 27 April 2004. Summary of changes for version 20040427:
11886 1) ACPI CA Core Subsystem:
11888 Completed a major overhaul of the GPE handling within ACPI CA. There are
11889 now three types of GPEs: wake-only, runtime-only, and combination
11891 The only GPEs allowed to be combination wake/run are for button-style
11892 devices such as a control-method power button, control-method sleep
11894 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
11896 referenced by any _PRW methods are marked for "runtime" and hardware
11897 enabled. Any GPE that is referenced by a _PRW method is marked for
11899 (and disabled at runtime). However, at sleep time, only those GPEs that
11900 have been specifically enabled for wake via the AcpiEnableGpe interface
11902 actually be hardware enabled.
11904 A new external interface has been added, AcpiSetGpeType(), that is meant
11906 be used by device drivers to force a GPE to a particular type. It will
11908 especially useful for the drivers for the button devices mentioned above.
11910 Completed restructuring of the ACPI CA initialization sequence so that
11911 default operation region handlers are installed before GPEs are
11913 and the _PRW methods are executed. This will prevent errors when the
11915 methods attempt to access system memory or I/O space.
11917 GPE enable/disable no longer reads the GPE enable register. We now keep
11919 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
11920 thus no longer depend on the hardware to maintain these bits.
11922 Always clear the wake status and fixed/GPE status bits before sleep, even
11925 Improved the AML debugger output for displaying the GPE blocks and their
11928 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
11932 Fixed a problem where the physical address was incorrectly calculated
11934 the Load() operator was used to directly load from an Operation Region
11936 loading from a Field object.) Also added check for minimum table length
11940 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
11943 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
11944 consistency with the other fields returned.
11946 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
11947 structure for each GPE in the system, so the size of this structure is
11950 CPU stack requirement reduction: Cleaned up the method execution and
11952 evaluation paths so that now a parameter structure is passed, instead of
11953 copying the various method parameters over and over again.
11955 In evregion.c: Correctly exit and reenter the interpreter region if and
11956 only if dispatching an operation region request to a user-installed
11958 Do not exit/reenter when dispatching to a default handler (e.g., default
11959 system memory or I/O handlers)
11962 Notes for updating drivers for the new GPE support. The following
11964 must be made to ACPI-related device drivers that are attached to one or
11966 GPEs: (This information will be added to the ACPI CA Programmer
11969 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
11971 explicitly call AcpiEnableGpe.
11972 2) There is a new interface called AcpiSetGpeType. This should be called
11973 before enabling the GPE. Also, this interface will automatically disable
11974 the GPE if it is currently enabled.
11975 3) AcpiEnableGpe no longer supports a GPE type flag.
11977 Specific drivers that must be changed:
11979 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
11980 AeGpeHandler, NULL);
11981 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
11982 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
11984 2) Button Drivers (Power, Lid, Sleep):
11985 Run _PRW method under parent device
11986 If _PRW exists: /* This is a control-method button */
11987 Extract GPE number and possibly GpeDevice
11988 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
11989 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
11991 For all other devices that have _PRWs, we automatically set the GPE type
11993 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
11995 must be done on a selective basis, usually requiring some kind of user
11997 to allow the user to pick the wake devices.
12000 Code and Data Size: Current and previous core subsystem library sizes are
12001 shown below. These are the code and data sizes for the acpica.lib
12003 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12004 any ACPI driver or OSPM code. The debug version of the code includes the
12005 debug output trace mechanism and has a much larger code and data size.
12007 that these values will vary depending on the efficiency of the compiler
12009 the compiler options used during generation.
12012 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12013 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12016 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12017 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12021 ----------------------------------------
12022 02 April 2004. Summary of changes for version 20040402:
12024 1) ACPI CA Core Subsystem:
12026 Fixed an interpreter problem where an indirect store through an ArgX
12027 parameter was incorrectly applying the "implicit conversion rules" during
12028 the store. From the ACPI specification: "If the target is a method local
12030 argument (LocalX or ArgX), no conversion is performed and the result is
12031 stored directly to the target". The new behavior is to disable implicit
12032 conversion during ALL stores to an ArgX.
12034 Changed the behavior of the _PRW method scan to ignore any and all errors
12035 returned by a given _PRW. This prevents the scan from aborting from the
12036 failure of any single _PRW.
12038 Moved the runtime configuration parameters from the global init procedure
12040 static variables in acglobal.h. This will allow the host to override the
12041 default values easily.
12043 Code and Data Size: Current and previous core subsystem library sizes are
12044 shown below. These are the code and data sizes for the acpica.lib
12046 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12047 any ACPI driver or OSPM code. The debug version of the code includes the
12048 debug output trace mechanism and has a much larger code and data size.
12050 that these values will vary depending on the efficiency of the compiler
12052 the compiler options used during generation.
12055 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12056 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12058 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12059 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12062 2) iASL Compiler/Disassembler:
12064 iASL now fully disassembles SSDTs. However, External() statements are
12066 generated automatically for unresolved symbols at this time. This is a
12067 planned feature for future implementation.
12069 Fixed a scoping problem in the disassembler that occurs when the type of
12071 target of a Scope() operator is overridden. This problem caused an
12072 incorrectly nested internal namespace to be constructed.
12074 Any warnings or errors that are emitted during disassembly are now
12076 out automatically so that the resulting file can be recompiled without
12080 ----------------------------------------
12081 26 March 2004. Summary of changes for version 20040326:
12083 1) ACPI CA Core Subsystem:
12085 Implemented support for "wake" GPEs via interaction between GPEs and the
12086 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12087 identified as a WAKE GPE and by default will no longer be enabled at
12088 runtime. Previously, we were blindly enabling all GPEs with a
12090 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12092 believe this has been the cause of thousands of "spurious" GPEs on some
12095 This new GPE behavior is can be reverted to the original behavior (enable
12096 ALL GPEs at runtime) via a runtime flag.
12098 Fixed a problem where aliased control methods could not access objects
12099 properly. The proper scope within the namespace was not initialized
12100 (transferred to the target of the aliased method) before executing the
12103 Fixed a potential race condition on internal object deletion on the
12105 object in AcpiEvaluateObject.
12107 Integrated a fix for resource descriptors where both _MEM and _MTP were
12108 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12109 wide, 0x0F instead of 0x03.)
12111 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12114 fault in some cases.
12116 Updated Notify() values for debug statements in evmisc.c
12118 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
12120 Code and Data Size: Current and previous core subsystem library sizes are
12121 shown below. These are the code and data sizes for the acpica.lib
12123 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12124 any ACPI driver or OSPM code. The debug version of the code includes the
12125 debug output trace mechanism and has a much larger code and data size.
12127 that these values will vary depending on the efficiency of the compiler
12129 the compiler options used during generation.
12133 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12134 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12136 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12137 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12139 ----------------------------------------
12140 11 March 2004. Summary of changes for version 20040311:
12142 1) ACPI CA Core Subsystem:
12144 Fixed a problem where errors occurring during the parse phase of control
12145 method execution did not abort cleanly. For example, objects created and
12146 installed in the namespace were not deleted. This caused all subsequent
12147 invocations of the method to return the AE_ALREADY_EXISTS exception.
12149 Implemented a mechanism to force a control method to "Serialized"
12151 if the method attempts to create namespace objects. (The root of the
12152 AE_ALREADY_EXISTS problem.)
12154 Implemented support for the predefined _OSI "internal" control method.
12155 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
12157 "Windows 2001.1", and can be easily upgraded for new strings as
12159 This feature will allow "other" operating systems to execute the fully
12160 tested, "Windows" code path through the ASL code
12162 Global Lock Support: Now allows multiple acquires and releases with any
12163 internal thread. Removed concept of "owning thread" for this special
12166 Fixed two functions that were inappropriately declaring large objects on
12168 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
12170 method execution considerably.
12172 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
12173 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
12175 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
12176 defined on the machine.
12178 Implemented two runtime options: One to force all control method
12180 to "Serialized" to mimic Windows behavior, another to disable _OSI
12182 if it causes problems on a given machine.
12184 Code and Data Size: Current and previous core subsystem library sizes are
12185 shown below. These are the code and data sizes for the acpica.lib
12187 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12188 any ACPI driver or OSPM code. The debug version of the code includes the
12189 debug output trace mechanism and has a much larger code and data size.
12191 that these values will vary depending on the efficiency of the compiler
12193 the compiler options used during generation.
12196 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12197 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12199 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12200 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12202 2) iASL Compiler/Disassembler:
12204 Fixed an array size problem for FreeBSD that would cause the compiler to
12207 ----------------------------------------
12208 20 February 2004. Summary of changes for version 20040220:
12211 1) ACPI CA Core Subsystem:
12213 Implemented execution of _SxD methods for Device objects in the
12214 GetObjectInfo interface.
12216 Fixed calls to _SST method to pass the correct arguments.
12218 Added a call to _SST on wake to restore to "working" state.
12220 Check for End-Of-Buffer failure case in the WalkResources interface.
12222 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
12223 structures to the beginning of the file.
12225 After wake, clear GPE status register(s) before enabling GPEs.
12227 After wake, clear/enable power button. (Perhaps we should clear/enable
12229 fixed events upon wake.)
12231 Fixed a couple of possible memory leaks in the Namespace manager.
12233 Integrated latest acnetbsd.h file.
12235 ----------------------------------------
12236 11 February 2004. Summary of changes for version 20040211:
12239 1) ACPI CA Core Subsystem:
12241 Completed investigation and implementation of the call-by-reference
12242 mechanism for control method arguments.
12244 Fixed a problem where a store of an object into an indexed package could
12245 fail if the store occurs within a different method than the method that
12246 created the package.
12248 Fixed a problem where the ToDecimal operator could return incorrect
12251 Fixed a problem where the CopyObject operator could fail on some of the
12253 obscure objects (e.g., Reference objects.)
12255 Improved the output of the Debug object to display buffer, package, and
12258 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
12260 the expected result.
12262 Added permanent ACPI_REPORT_ERROR macros for all instances of the
12263 ACPI_AML_INTERNAL exception.
12265 Integrated latest version of acfreebsd.h
12267 ----------------------------------------
12268 16 January 2004. Summary of changes for version 20040116:
12270 The purpose of this release is primarily to update the copyright years in
12271 each module, thus causing a huge number of diffs. There are a few small
12272 functional changes, however.
12274 1) ACPI CA Core Subsystem:
12276 Improved error messages when there is a problem finding one or more of
12278 required base ACPI tables
12280 Reintroduced the definition of APIC_HEADER in actbl.h
12282 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
12284 Removed extraneous reference to NewObj in dsmthdat.c
12288 Fixed a problem introduced in December that disabled the correct
12290 of Resource Templates
12293 ----------------------------------------
12294 03 December 2003. Summary of changes for version 20031203:
12296 1) ACPI CA Core Subsystem:
12298 Changed the initialization of Operation Regions during subsystem
12299 init to perform two entire walks of the ACPI namespace; The first
12300 to initialize the regions themselves, the second to execute the
12301 _REG methods. This fixed some interdependencies across _REG
12302 methods found on some machines.
12304 Fixed a problem where a Store(Local0, Local1) could simply update
12305 the object reference count, and not create a new copy of the
12306 object if the Local1 is uninitialized.
12308 Implemented support for the _SST reserved method during sleep
12311 Implemented support to clear the SLP_TYP and SLP_EN bits when
12312 waking up, this is apparently required by some machines.
12314 When sleeping, clear the wake status only if SleepState is not S5.
12316 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
12317 pointer arithmetic advanced a string pointer too far.
12319 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
12320 could be returned if the requested table has not been loaded.
12322 Within the support for IRQ resources, restructured the handling of
12323 the active and edge/level bits.
12325 Fixed a few problems in AcpiPsxExecute() where memory could be
12326 leaked under certain error conditions.
12328 Improved error messages for the cases where the ACPI mode could
12331 Code and Data Size: Current and previous core subsystem library
12332 sizes are shown below. These are the code and data sizes for the
12333 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12334 these values do not include any ACPI driver or OSPM code. The
12335 debug version of the code includes the debug output trace
12336 mechanism and has a much larger code and data size. Note that
12337 these values will vary depending on the efficiency of the compiler
12338 and the compiler options used during generation.
12340 Previous Release (20031029):
12341 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12342 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12344 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12345 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12347 2) iASL Compiler/Disassembler:
12349 Implemented a fix for the iASL disassembler where a bad index was
12350 generated. This was most noticeable on 64-bit platforms
12353 ----------------------------------------
12354 29 October 2003. Summary of changes for version 20031029:
12356 1) ACPI CA Core Subsystem:
12359 Fixed a problem where a level-triggered GPE with an associated
12360 _Lxx control method was incorrectly cleared twice.
12362 Fixed a problem with the Field support code where an access can
12363 occur beyond the end-of-region if the field is non-aligned but
12364 extends to the very end of the parent region (resulted in an
12365 AE_AML_REGION_LIMIT exception.)
12367 Fixed a problem with ACPI Fixed Events where an RT Clock handler
12368 would not get invoked on an RTC event. The RTC event bitmasks for
12369 the PM1 registers were not being initialized properly.
12371 Implemented support for executing _STA and _INI methods for
12372 Processor objects. Although this is currently not part of the
12373 ACPI specification, there is existing ASL code that depends on the
12374 init-time execution of these methods.
12376 Implemented and deployed a GetDescriptorName function to decode
12377 the various types of internal descriptors. Guards against null
12378 descriptors during debug output also.
12380 Implemented and deployed a GetNodeName function to extract the 4-
12381 character namespace node name. This function simplifies the debug
12382 and error output, as well as guarding against null pointers during
12385 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
12386 simplify the debug and error output of 64-bit integers. This
12387 macro replaces the HIDWORD and LODWORD macros for dumping these
12390 Updated the implementation of the Stall() operator to only call
12391 AcpiOsStall(), and also return an error if the operand is larger
12392 than 255. This preserves the required behavior of not
12393 relinquishing the processor, as would happen if AcpiOsSleep() was
12394 called for "long stalls".
12396 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
12397 initialized are now treated as NOOPs.
12399 Cleaned up a handful of warnings during 64-bit generation.
12401 Fixed a reported error where and incorrect GPE number was passed
12402 to the GPE dispatch handler. This value is only used for error
12403 output, however. Used this opportunity to clean up and streamline
12404 the GPE dispatch code.
12406 Code and Data Size: Current and previous core subsystem library
12407 sizes are shown below. These are the code and data sizes for the
12408 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12409 these values do not include any ACPI driver or OSPM code. The
12411 debug version of the code includes the debug output trace
12412 mechanism and has a much larger code and data size. Note that
12413 these values will vary depending on the efficiency of the compiler
12414 and the compiler options used during generation.
12416 Previous Release (20031002):
12417 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12418 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12420 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12421 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12424 2) iASL Compiler/Disassembler:
12426 Updated the iASL compiler to return an error if the operand to the
12427 Stall() operator is larger than 255.
12430 ----------------------------------------
12431 02 October 2003. Summary of changes for version 20031002:
12434 1) ACPI CA Core Subsystem:
12436 Fixed a problem with Index Fields where the index was not
12437 incremented for fields that require multiple writes to the
12438 index/data registers (Fields that are wider than the data
12441 Fixed a problem with all Field objects where a write could go
12442 beyond the end-of-field if the field was larger than the access
12443 granularity and therefore required multiple writes to complete the
12444 request. An extra write beyond the end of the field could happen
12447 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
12448 would incorrectly be returned if the width of the Data Register
12449 was larger than the specified field access width.
12451 Completed fixes for LoadTable() and Unload() and verified their
12452 operation. Implemented full support for the "DdbHandle" object
12453 throughout the ACPI CA subsystem.
12455 Implemented full support for the MADT and ECDT tables in the ACPI
12456 CA header files. Even though these tables are not directly
12457 consumed by ACPI CA, the header definitions are useful for ACPI
12460 Integrated resource descriptor fixes posted to the Linux ACPI
12461 list. This included checks for minimum descriptor length, and
12462 support for trailing NULL strings within descriptors that have
12463 optional string elements.
12465 Code and Data Size: Current and previous core subsystem library
12466 sizes are shown below. These are the code and data sizes for the
12467 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12468 these values do not include any ACPI driver or OSPM code. The
12469 debug version of the code includes the debug output trace
12470 mechanism and has a much larger code and data size. Note that
12471 these values will vary depending on the efficiency of the compiler
12472 and the compiler options used during generation.
12474 Previous Release (20030918):
12475 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12476 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12478 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12479 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12484 Implemented detection of non-ASCII characters within the input
12485 source ASL file. This catches attempts to compile binary (AML)
12486 files early in the compile, with an informative error message.
12488 Fixed a problem where the disassembler would fault if the output
12489 filename could not be generated or if the output file could not be
12492 ----------------------------------------
12493 18 September 2003. Summary of changes for version 20030918:
12496 1) ACPI CA Core Subsystem:
12498 Found and fixed a longstanding problem with the late execution of
12499 the various deferred AML opcodes (such as Operation Regions,
12500 Buffer Fields, Buffers, and Packages). If the name string
12501 specified for the name of the new object placed the object in a
12502 scope other than the current scope, the initialization/execution
12503 of the opcode failed. The solution to this problem was to
12504 implement a mechanism where the late execution of such opcodes
12505 does not attempt to lookup/create the name a second time in an
12506 incorrect scope. This fixes the "region size computed
12507 incorrectly" problem.
12509 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
12510 Global Lock AE_BAD_PARAMETER error.
12512 Fixed several 64-bit issues with prototypes, casting and data
12515 Removed duplicate prototype from acdisasm.h
12517 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
12519 Code and Data Size: Current and previous core subsystem library
12520 sizes are shown below. These are the code and data sizes for the
12521 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12522 these values do not include any ACPI driver or OSPM code. The
12523 debug version of the code includes the debug output trace
12524 mechanism and has a much larger code and data size. Note that
12525 these values will vary depending on the efficiency of the compiler
12526 and the compiler options used during generation.
12530 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12531 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12533 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12534 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12539 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
12540 correct sleep time in seconds.
12542 ----------------------------------------
12543 14 July 2003. Summary of changes for version 20030619:
12545 1) ACPI CA Core Subsystem:
12547 Parse SSDTs in order discovered, as opposed to reverse order
12550 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
12557 Dynamically allocate SDT list (suggested by Andi Kleen)
12559 proc function return value cleanups (Andi Kleen)
12561 Correctly handle NMI watchdog during long stalls (Andrew Morton)
12563 Make it so acpismp=force works (reported by Andrew Morton)
12566 ----------------------------------------
12567 19 June 2003. Summary of changes for version 20030619:
12569 1) ACPI CA Core Subsystem:
12571 Fix To/FromBCD, eliminating the need for an arch-specific #define.
12573 Do not acquire a semaphore in the S5 shutdown path.
12575 Fix ex_digits_needed for 0. (Takayoshi Kochi)
12577 Fix sleep/stall code reversal. (Andi Kleen)
12579 Revert a change having to do with control method calling
12584 acpiphp update (Takayoshi Kochi)
12586 Export acpi_disabled for sonypi (Stelian Pop)
12588 Mention acpismp=force in config help
12590 Re-add acpitable.c and acpismp=force. This improves backwards
12592 compatibility and also cleans up the code to a significant degree.
12594 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
12596 ----------------------------------------
12597 22 May 2003. Summary of changes for version 20030522:
12599 1) ACPI CA Core Subsystem:
12601 Found and fixed a reported problem where an AE_NOT_FOUND error
12602 occurred occasionally during _BST evaluation. This turned out to
12603 be an Owner ID allocation issue where a called method did not get
12604 a new ID assigned to it. Eventually, (after 64k calls), the Owner
12605 ID UINT16 would wraparound so that the ID would be the same as the
12606 caller's and the called method would delete the caller's
12609 Implemented extended error reporting for control methods that are
12610 aborted due to a run-time exception. Output includes the exact
12611 AML instruction that caused the method abort, a dump of the method
12612 locals and arguments at the time of the abort, and a trace of all
12613 nested control method calls.
12615 Modified the interpreter to allow the creation of buffers of zero
12616 length from the AML code. Implemented new code to ensure that no
12617 attempt is made to actually allocate a memory buffer (of length
12618 zero) - instead, a simple buffer object with a NULL buffer pointer
12619 and length zero is created. A warning is no longer issued when
12620 the AML attempts to create a zero-length buffer.
12622 Implemented a workaround for the "leading asterisk issue" in
12623 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
12624 asterisk is automatically removed if present in any HID, UID, or
12625 CID strings. The iASL compiler will still flag this asterisk as
12628 Implemented full support for _CID methods that return a package of
12629 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
12630 now additionally returns a device _CID list if present. This
12631 required a change to the external interface in order to pass an
12632 ACPI_BUFFER object as a parameter since the _CID list is of
12635 Fixed a problem with the new AE_SAME_HANDLER exception where
12636 handler initialization code did not know about this exception.
12638 Code and Data Size: Current and previous core subsystem library
12639 sizes are shown below. These are the code and data sizes for the
12640 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12641 these values do not include any ACPI driver or OSPM code. The
12642 debug version of the code includes the debug output trace
12643 mechanism and has a much larger code and data size. Note that
12644 these values will vary depending on the efficiency of the compiler
12645 and the compiler options used during generation.
12647 Previous Release (20030509):
12648 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12649 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12651 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12652 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12657 Fixed a bug in which we would reinitialize the ACPI interrupt
12658 after it was already working, thus disabling all ACPI and the IRQs
12659 for any other device sharing the interrupt. (Thanks to Stian
12662 Toshiba driver update (John Belmonte)
12664 Return only 0 or 1 for our interrupt handler status (Andrew
12670 Fixed a reported problem where multiple (nested) ElseIf()
12671 statements were not handled correctly by the compiler, resulting
12672 in incorrect warnings and incorrect AML code. This was a problem
12673 in both the ASL parser and the code generator.
12678 Added changes to existing interfaces, new exception codes, and new
12679 text concerning reference count object management versus garbage
12682 ----------------------------------------
12683 09 May 2003. Summary of changes for version 20030509.
12686 1) ACPI CA Core Subsystem:
12688 Changed the subsystem initialization sequence to hold off
12689 installation of address space handlers until the hardware has been
12690 initialized and the system has entered ACPI mode. This is because
12691 the installation of space handlers can cause _REG methods to be
12692 run. Previously, the _REG methods could potentially be run before
12693 ACPI mode was enabled.
12695 Fixed some memory leak issues related to address space handler and
12696 notify handler installation. There were some problems with the
12697 reference count mechanism caused by the fact that the handler
12698 objects are shared across several namespace objects.
12700 Fixed a reported problem where reference counts within the
12701 namespace were not properly updated when named objects created by
12702 method execution were deleted.
12704 Fixed a reported problem where multiple SSDTs caused a deletion
12705 issue during subsystem termination. Restructured the table data
12706 structures to simplify the linked lists and the related code.
12708 Fixed a problem where the table ID associated with secondary
12709 tables (SSDTs) was not being propagated into the namespace objects
12710 created by those tables. This would only present a problem for
12711 tables that are unloaded at run-time, however.
12713 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
12714 type as the length parameter (instead of UINT32).
12716 Solved a long-standing problem where an ALREADY_EXISTS error
12717 appears on various systems. This problem could happen when there
12718 are multiple PCI_Config operation regions under a single PCI root
12719 bus. This doesn't happen very frequently, but there are some
12720 systems that do this in the ASL.
12722 Fixed a reported problem where the internal DeleteNode function
12723 was incorrectly handling the case where a namespace node was the
12724 first in the parent's child list, and had additional peers (not
12725 the only child, but first in the list of children.)
12727 Code and Data Size: Current core subsystem library sizes are shown
12728 below. These are the code and data sizes for the acpica.lib
12729 produced by the Microsoft Visual C++ 6.0 compiler, and these
12730 values do not include any ACPI driver or OSPM code. The debug
12731 version of the code includes the debug output trace mechanism and
12732 has a much larger code and data size. Note that these values will
12733 vary depending on the efficiency of the compiler and the compiler
12734 options used during generation.
12737 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12738 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12740 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12741 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12746 Allow ":" in OS override string (Ducrot Bruno)
12748 Kobject fix (Greg KH)
12751 3 iASL Compiler/Disassembler:
12753 Fixed a problem in the generation of the C source code files (AML
12754 is emitted in C source statements for BIOS inclusion) where the
12755 Ascii dump that appears within a C comment at the end of each line
12756 could cause a compile time error if the AML sequence happens to
12757 have an open comment or close comment sequence embedded.
12760 ----------------------------------------
12761 24 April 2003. Summary of changes for version 20030424.
12764 1) ACPI CA Core Subsystem:
12766 Support for big-endian systems has been implemented. Most of the
12767 support has been invisibly added behind big-endian versions of the
12768 ACPI_MOVE_* macros.
12770 Fixed a problem in AcpiHwDisableGpeBlock() and
12771 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
12772 low level hardware write routine. The offset parameter was
12773 actually eliminated from the low level read/write routines because
12774 they had become obsolete.
12776 Fixed a problem where a handler object was deleted twice during
12777 the removal of a fixed event handler.
12782 A fix for SMP systems with link devices was contributed by
12786 (2.5) Return whether we handled the interrupt in our IRQ handler.
12787 (Linux ISRs no longer return void, so we can propagate the handler
12788 return value from the ACPI CA core back to the OS.)
12794 The ACPI CA Programmer Reference has been updated to reflect new
12795 interfaces and changes to existing interfaces.
12797 ----------------------------------------
12798 28 March 2003. Summary of changes for version 20030328.
12800 1) ACPI CA Core Subsystem:
12802 The GPE Block Device support has been completed. New interfaces
12803 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
12804 interfaces (enable, disable, clear, getstatus) have been split
12805 into separate interfaces for Fixed Events and General Purpose
12806 Events (GPEs) in order to support GPE Block Devices properly.
12808 Fixed a problem where the error message "Failed to acquire
12809 semaphore" would appear during operations on the embedded
12812 Code and Data Size: Current core subsystem library sizes are shown
12813 below. These are the code and data sizes for the acpica.lib
12814 produced by the Microsoft Visual C++ 6.0 compiler, and these
12815 values do not include any ACPI driver or OSPM code. The debug
12816 version of the code includes the debug output trace mechanism and
12817 has a much larger code and data size. Note that these values will
12818 vary depending on the efficiency of the compiler and the compiler
12819 options used during generation.
12822 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12823 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12825 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12826 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12829 ----------------------------------------
12830 28 February 2003. Summary of changes for version 20030228.
12833 1) ACPI CA Core Subsystem:
12835 The GPE handling and dispatch code has been completely overhauled
12836 in preparation for support of GPE Block Devices (ID ACPI0006).
12837 This affects internal data structures and code only; there should
12838 be no differences visible externally. One new file has been
12841 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
12842 fields that are used to determine the GPE block lengths. The
12843 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
12844 structures are ignored. This is per the ACPI specification but it
12845 isn't very clear. The full 256 Block 0/1 GPEs are now supported
12846 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
12848 In the SCI interrupt handler, removed the read of the PM1_CONTROL
12849 register to look at the SCI_EN bit. On some machines, this read
12850 causes an SMI event and greatly slows down SCI events. (This may
12851 in fact be the cause of slow battery status response on some
12854 Fixed a problem where a store of a NULL string to a package object
12855 could cause the premature deletion of the object. This was seen
12856 during execution of the battery _BIF method on some systems,
12857 resulting in no battery data being returned.
12859 Added AcpiWalkResources interface to simplify parsing of resource
12862 Code and Data Size: Current core subsystem library sizes are shown
12863 below. These are the code and data sizes for the acpica.lib
12864 produced by the Microsoft Visual C++ 6.0 compiler, and these
12865 values do not include any ACPI driver or OSPM code. The debug
12866 version of the code includes the debug output trace mechanism and
12867 has a much larger code and data size. Note that these values will
12868 vary depending on the efficiency of the compiler and the compiler
12869 options used during generation.
12872 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12873 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12875 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12876 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12881 S3 fixes (Ole Rohne)
12883 Update ACPI PHP driver with to use new acpi_walk_resource API
12886 Add S4BIOS support (Pavel Machek)
12888 Map in entire table before performing checksum (John Stultz)
12890 Expand the mem= cmdline to allow the specification of reserved and
12891 ACPI DATA blocks (Pavel Machek)
12893 Never use ACPI on VISWS
12895 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
12897 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
12898 causing us to think that some systems support C2 when they really
12901 Do not count processor objects for non-present CPUs (Thanks to
12907 Fixed a problem where ASL include files could not be found and
12910 Added support for the _PDC reserved name.
12913 ----------------------------------------
12914 22 January 2003. Summary of changes for version 20030122.
12917 1) ACPI CA Core Subsystem:
12919 Added a check for constructs of the form: Store (Local0, Local0)
12920 where Local0 is not initialized. Apparently, some BIOS
12921 programmers believe that this is a NOOP. Since this store doesn't
12922 do anything anyway, the new prototype behavior will ignore this
12923 error. This is a case where we can relax the strict checking in
12924 the interpreter in the name of compatibility.
12929 The AcpiSrc Source Conversion Utility has been released with the
12930 Linux package for the first time. This is the utility that is
12931 used to convert the ACPI CA base source code to the Linux version.
12933 (Both) Handle P_BLK lengths shorter than 6 more gracefully
12935 (Both) Move more headers to include/acpi, and delete an unused
12938 (Both) Move drivers/acpi/include directory to include/acpi
12940 (Both) Boot functions don't use cmdline, so don't pass it around
12942 (Both) Remove include of unused header (Adrian Bunk)
12944 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
12946 former now also includes the latter, acpiphp.h only needs the one,
12949 (2.5) Make it possible to select method of bios restoring after S3
12950 resume. [=> no more ugly ifdefs] (Pavel Machek)
12952 (2.5) Make proc write interfaces work (Pavel Machek)
12954 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
12956 (2.5) Break out ACPI Perf code into its own module, under cpufreq
12957 (Dominik Brodowski)
12959 (2.4) S4BIOS support (Ducrot Bruno)
12961 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
12967 Added support to disassemble SSDT and PSDTs.
12969 Implemented support to obtain SSDTs from the Windows registry if
12973 ----------------------------------------
12974 09 January 2003. Summary of changes for version 20030109.
12976 1) ACPI CA Core Subsystem:
12978 Changed the behavior of the internal Buffer-to-String conversion
12979 function. The current ACPI specification states that the contents
12980 of the buffer are "converted to a string of two-character
12981 hexadecimal numbers, each separated by a space". Unfortunately,
12982 this definition is not backwards compatible with existing ACPI 1.0
12983 implementations (although the behavior was not defined in the ACPI
12984 1.0 specification). The new behavior simply copies data from the
12985 buffer to the string until a null character is found or the end of
12986 the buffer is reached. The new String object is always null
12987 terminated. This problem was seen during the generation of _BIF
12988 battery data where incorrect strings were returned for battery
12989 type, etc. This will also require an errata to the ACPI
12992 Renamed all instances of NATIVE_UINT and NATIVE_INT to
12993 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
12995 Copyright in all module headers (both Linux and non-Linux) has be
12998 Code and Data Size: Current core subsystem library sizes are shown
12999 below. These are the code and data sizes for the acpica.lib
13000 produced by the Microsoft Visual C++ 6.0 compiler, and these
13001 values do not include any ACPI driver or OSPM code. The debug
13002 version of the code includes the debug output trace mechanism and
13003 has a much larger code and data size. Note that these values will
13004 vary depending on the efficiency of the compiler and the compiler
13005 options used during generation.
13008 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13009 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13011 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13012 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13017 Fixed an oops on module insertion/removal (Matthew Tippett)
13019 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13021 (2.5) Replace pr_debug (Randy Dunlap)
13023 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13025 (Both) Eliminate spawning of thread from timer callback, in favor
13028 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13030 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13032 (Both) Add missing statics to button.c (Pavel Machek)
13034 Several changes have been made to the source code translation
13035 utility that generates the Linux Code in order to make the code
13038 All typedefs on structs and unions have been removed in keeping
13039 with the Linux coding style.
13041 Removed the non-Linux SourceSafe module revision number from each
13044 Completed major overhaul of symbols to be lowercased for linux.
13045 Doubled the number of symbols that are lowercased.
13047 Fixed a problem where identifiers within procedure headers and
13048 within quotes were not fully lower cased (they were left with a
13051 Some C macros whose only purpose is to allow the generation of 16-
13052 bit code are now completely removed in the Linux code, increasing
13053 readability and maintainability.
13055 ----------------------------------------
13057 12 December 2002. Summary of changes for version 20021212.
13060 1) ACPI CA Core Subsystem:
13062 Fixed a problem where the creation of a zero-length AML Buffer
13063 would cause a fault.
13065 Fixed a problem where a Buffer object that pointed to a static AML
13066 buffer (in an ACPI table) could inadvertently be deleted, causing
13069 Fixed a problem where a user buffer (passed in to the external
13070 ACPI CA interfaces) could be overwritten if the buffer was too
13071 small to complete the operation, causing memory corruption.
13073 Fixed a problem in the Buffer-to-String conversion code where a
13074 string of length one was always returned, regardless of the size
13075 of the input Buffer object.
13077 Removed the NATIVE_CHAR data type across the entire source due to
13078 lack of need and lack of consistent use.
13080 Code and Data Size: Current core subsystem library sizes are shown
13081 below. These are the code and data sizes for the acpica.lib
13082 produced by the Microsoft Visual C++ 6.0 compiler, and these
13083 values do not include any ACPI driver or OSPM code. The debug
13084 version of the code includes the debug output trace mechanism and
13085 has a much larger code and data size. Note that these values will
13086 vary depending on the efficiency of the compiler and the compiler
13087 options used during generation.
13090 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13091 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13093 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13094 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13097 ----------------------------------------
13098 05 December 2002. Summary of changes for version 20021205.
13100 1) ACPI CA Core Subsystem:
13102 Fixed a problem where a store to a String or Buffer object could
13103 cause corruption of the DSDT if the object type being stored was
13104 the same as the target object type and the length of the object
13105 being stored was equal to or smaller than the original (existing)
13106 target object. This was seen to cause corruption of battery _BIF
13107 buffers if the _BIF method modified the buffer on the fly.
13109 Fixed a problem where an internal error was generated if a control
13110 method invocation was used in an OperationRegion, Buffer, or
13111 Package declaration. This was caused by the deferred parsing of
13112 the control method and thus the deferred creation of the internal
13113 method object. The solution to this problem was to create the
13114 internal method object at the moment the method is encountered in
13115 the first pass - so that subsequent references to the method will
13116 able to obtain the required parameter count and thus properly
13117 parse the method invocation. This problem presented itself as an
13118 AE_AML_INTERNAL during the pass 1 parse phase during table load.
13120 Fixed a problem where the internal String object copy routine did
13121 not always allocate sufficient memory for the target String object
13122 and caused memory corruption. This problem was seen to cause
13123 "Allocation already present in list!" errors as memory allocation
13126 Implemented a new function for the evaluation of namespace objects
13127 that allows the specification of the allowable return object
13128 types. This simplifies a lot of code that checks for a return
13129 object of one or more specific objects returned from the
13130 evaluation (such as _STA, etc.) This may become and external
13131 function if it would be useful to ACPI-related drivers.
13133 Completed another round of prefixing #defines with "ACPI_" for
13136 Completed additional code restructuring to allow more modular
13137 linking for iASL compiler and AcpiExec. Several files were split
13138 creating new files. New files: nsparse.c dsinit.c evgpe.c
13140 Implemented an abort mechanism to terminate an executing control
13141 method via the AML debugger. This feature is useful for debugging
13142 control methods that depend (wait) for specific hardware
13145 Code and Data Size: Current core subsystem library sizes are shown
13146 below. These are the code and data sizes for the acpica.lib
13147 produced by the Microsoft Visual C++ 6.0 compiler, and these
13148 values do not include any ACPI driver or OSPM code. The debug
13149 version of the code includes the debug output trace mechanism and
13150 has a much larger code and data size. Note that these values will
13151 vary depending on the efficiency of the compiler and the compiler
13152 options used during generation.
13155 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13156 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13158 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13159 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13162 2) iASL Compiler/Disassembler
13164 Fixed a compiler code generation problem for "Interrupt" Resource
13165 Descriptors. If specified in the ASL, the optional "Resource
13166 Source Index" and "Resource Source" fields were not inserted into
13167 the correct location within the AML resource descriptor, creating
13168 an invalid descriptor.
13170 Fixed a disassembler problem for "Interrupt" resource descriptors.
13171 The optional "Resource Source Index" and "Resource Source" fields
13175 ----------------------------------------
13176 22 November 2002. Summary of changes for version 20021122.
13179 1) ACPI CA Core Subsystem:
13181 Fixed a reported problem where an object stored to a Method Local
13182 or Arg was not copied to a new object during the store - the
13183 object pointer was simply copied to the Local/Arg. This caused
13184 all subsequent operations on the Local/Arg to also affect the
13185 original source of the store operation.
13187 Fixed a problem where a store operation to a Method Local or Arg
13188 was not completed properly if the Local/Arg contained a reference
13189 (from RefOf) to a named field. The general-purpose store-to-
13190 namespace-node code is now used so that this case is handled
13193 Fixed a problem where the internal object copy routine would cause
13194 a protection fault if the object being copied was a Package and
13195 contained either 1) a NULL package element or 2) a nested sub-
13198 Fixed a problem with the GPE initialization that resulted from an
13199 ambiguity in the ACPI specification. One section of the
13200 specification states that both the address and length of the GPE
13201 block must be zero if the block is not supported. Another section
13202 implies that only the address need be zero if the block is not
13203 supported. The code has been changed so that both the address and
13204 the length must be non-zero to indicate a valid GPE block (i.e.,
13205 if either the address or the length is zero, the GPE block is
13208 Code and Data Size: Current core subsystem library sizes are shown
13209 below. These are the code and data sizes for the acpica.lib
13210 produced by the Microsoft Visual C++ 6.0 compiler, and these
13211 values do not include any ACPI driver or OSPM code. The debug
13212 version of the code includes the debug output trace mechanism and
13213 has a much larger code and data size. Note that these values will
13214 vary depending on the efficiency of the compiler and the compiler
13215 options used during generation.
13218 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13219 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13221 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13222 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13227 Cleaned up EC driver. Exported an external EC read/write
13228 interface. By going through this, other drivers (most notably
13229 sonypi) will be able to serialize access to the EC.
13232 3) iASL Compiler/Disassembler
13234 Implemented support to optionally generate include files for both
13235 ASM and C (the -i switch). This simplifies BIOS development by
13236 automatically creating include files that contain external
13237 declarations for the symbols that are created within the
13239 (optionally generated) ASM and C AML source files.
13242 ----------------------------------------
13243 15 November 2002. Summary of changes for version 20021115.
13245 1) ACPI CA Core Subsystem:
13247 Fixed a memory leak problem where an error during resolution of
13249 method arguments during a method invocation from another method
13250 failed to cleanup properly by deleting all successfully resolved
13253 Fixed a problem where the target of the Index() operator was not
13254 correctly constructed if the source object was a package. This
13255 problem has not been detected because the use of a target operand
13256 with Index() is very rare.
13258 Fixed a problem with the Index() operator where an attempt was
13259 made to delete the operand objects twice.
13261 Fixed a problem where an attempt was made to delete an operand
13262 twice during execution of the CondRefOf() operator if the target
13265 Implemented the first of perhaps several internal create object
13266 functions that create and initialize a specific object type. This
13267 consolidates duplicated code wherever the object is created, thus
13268 shrinking the size of the subsystem.
13270 Implemented improved debug/error messages for errors that occur
13271 during nested method invocations. All executing method pathnames
13272 are displayed (with the error) as the call stack is unwound - thus
13275 Fixed a problem introduced in the 10/02 release that caused
13276 premature deletion of a buffer object if a buffer was used as an
13277 ASL operand where an integer operand is required (Thus causing an
13278 implicit object conversion from Buffer to Integer.) The change in
13279 the 10/02 release was attempting to fix a memory leak (albeit
13282 Code and Data Size: Current core subsystem library sizes are shown
13283 below. These are the code and data sizes for the acpica.lib
13284 produced by the Microsoft Visual C++ 6.0 compiler, and these
13285 values do not include any ACPI driver or OSPM code. The debug
13286 version of the code includes the debug output trace mechanism and
13287 has a much larger code and data size. Note that these values will
13288 vary depending on the efficiency of the compiler and the compiler
13289 options used during generation.
13292 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13293 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13295 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13296 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13301 Changed the implementation of the ACPI semaphores to use down()
13302 instead of down_interruptable(). It is important that the
13303 execution of ACPI control methods not be interrupted by signals.
13304 Methods must run to completion, or the system may be left in an
13305 unknown/unstable state.
13307 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
13311 3) iASL Compiler/Disassembler
13314 Changed the default location of output files. All output files
13315 are now placed in the current directory by default instead of in
13316 the directory of the source file. This change may affect some
13317 existing makefiles, but it brings the behavior of the compiler in
13318 line with other similar tools. The location of the output files
13319 can be overridden with the -p command line switch.
13322 ----------------------------------------
13323 11 November 2002. Summary of changes for version 20021111.
13326 0) ACPI Specification 2.0B is released and is now available at:
13327 http://www.acpi.info/index.html
13330 1) ACPI CA Core Subsystem:
13332 Implemented support for the ACPI 2.0 SMBus Operation Regions.
13333 This includes the early detection and handoff of the request to
13334 the SMBus region handler (avoiding all of the complex field
13335 support code), and support for the bidirectional return packet
13336 from an SMBus write operation. This paves the way for the
13337 development of SMBus drivers in each host operating system.
13339 Fixed a problem where the semaphore WAIT_FOREVER constant was
13340 defined as 32 bits, but must be 16 bits according to the ACPI
13341 specification. This had the side effect of causing ASL
13342 Mutex/Event timeouts even though the ASL code requested a wait
13343 forever. Changed all internal references to the ACPI timeout
13344 parameter to 16 bits to prevent future problems. Changed the name
13345 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
13347 Code and Data Size: Current core subsystem library sizes are shown
13348 below. These are the code and data sizes for the acpica.lib
13349 produced by the Microsoft Visual C++ 6.0 compiler, and these
13350 values do not include any ACPI driver or OSPM code. The debug
13351 version of the code includes the debug output trace mechanism and
13352 has a much larger code and data size. Note that these values will
13353 vary depending on the efficiency of the compiler and the compiler
13354 options used during generation.
13357 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13358 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13360 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13361 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13366 Module loading/unloading fixes (John Cagle)
13369 3) iASL Compiler/Disassembler
13371 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
13373 Implemented support for the disassembly of all SMBus protocol
13374 keywords (SMBQuick, SMBWord, etc.)
13376 ----------------------------------------
13377 01 November 2002. Summary of changes for version 20021101.
13380 1) ACPI CA Core Subsystem:
13382 Fixed a problem where platforms that have a GPE1 block but no GPE0
13383 block were not handled correctly. This resulted in a "GPE
13384 overlap" error message. GPE0 is no longer required.
13386 Removed code added in the previous release that inserted nodes
13387 into the namespace in alphabetical order. This caused some side-
13388 effects on various machines. The root cause of the problem is
13389 still under investigation since in theory, the internal ordering
13390 of the namespace nodes should not matter.
13393 Enhanced error reporting for the case where a named object is not
13394 found during control method execution. The full ACPI namepath
13395 (name reference) of the object that was not found is displayed in
13398 Note: as a result of the overhaul of the namespace object types in
13399 the previous release, the namespace nodes for the predefined
13400 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
13401 instead of ACPI_TYPE_ANY. This simplifies the namespace
13402 management code but may affect code that walks the namespace tree
13403 looking for specific object types.
13405 Code and Data Size: Current core subsystem library sizes are shown
13406 below. These are the code and data sizes for the acpica.lib
13407 produced by the Microsoft Visual C++ 6.0 compiler, and these
13408 values do not include any ACPI driver or OSPM code. The debug
13409 version of the code includes the debug output trace mechanism and
13410 has a much larger code and data size. Note that these values will
13411 vary depending on the efficiency of the compiler and the compiler
13412 options used during generation.
13415 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13416 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13418 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13419 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13424 Fixed a problem introduced in the previous release where the
13425 Processor and Thermal objects were not recognized and installed in
13426 /proc. This was related to the scope type change described above.
13429 3) iASL Compiler/Disassembler
13431 Implemented the -g option to get all of the required ACPI tables
13432 from the registry and save them to files (Windows version of the
13433 compiler only.) The required tables are the FADT, FACS, and DSDT.
13435 Added ACPI table checksum validation during table disassembly in
13436 order to catch corrupted tables.
13439 ----------------------------------------
13440 22 October 2002. Summary of changes for version 20021022.
13442 1) ACPI CA Core Subsystem:
13444 Implemented a restriction on the Scope operator that the target
13445 must already exist in the namespace at the time the operator is
13446 encountered (during table load or method execution). In other
13447 words, forward references are not allowed and Scope() cannot
13448 create a new object. This changes the previous behavior where the
13449 interpreter would create the name if not found. This new behavior
13450 correctly enables the search-to-root algorithm during namespace
13451 lookup of the target name. Because of this upsearch, this fixes
13452 the known Compaq _SB_.OKEC problem and makes both the AML
13453 interpreter and iASL compiler compatible with other ACPI
13456 Completed a major overhaul of the internal ACPI object types for
13457 the ACPI Namespace and the associated operand objects. Many of
13458 these types had become obsolete with the introduction of the two-
13459 pass namespace load. This cleanup simplifies the code and makes
13460 the entire namespace load mechanism much clearer and easier to
13463 Improved debug output for tracking scope opening/closing to help
13464 diagnose scoping issues. The old scope name as well as the new
13465 scope name are displayed. Also improved error messages for
13466 problems with ASL Mutex objects and error messages for GPE
13469 Cleaned up the namespace dump code, removed obsolete code.
13471 All string output (for all namespace/object dumps) now uses the
13472 common ACPI string output procedure which handles escapes properly
13473 and does not emit non-printable characters.
13475 Fixed some issues with constants in the 64-bit version of the
13476 local C library (utclib.c)
13481 EC Driver: No longer attempts to acquire the Global Lock at
13485 3) iASL Compiler/Disassembler
13487 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
13488 2 opcodes outside of a control method. This means that the
13489 "executable" operators (versus the "namespace" operators) cannot
13490 be used at the table level; they can only be used within a control
13493 Implemented the restriction on the Scope() operator where the
13494 target must already exist in the namespace at the time the
13495 operator is encountered (during ASL compilation). In other words,
13496 forward references are not allowed and Scope() cannot create a new
13497 object. This makes the iASL compiler compatible with other ACPI
13498 implementations and makes the Scope() implementation adhere to the
13499 ACPI specification.
13501 Fixed a problem where namepath optimization for the Alias operator
13502 was optimizing the wrong path (of the two namepaths.) This caused
13503 a "Missing alias link" error message.
13505 Fixed a problem where an "unknown reserved name" warning could be
13506 incorrectly generated for names like "_SB" when the trailing
13507 underscore is not used in the original ASL.
13509 Fixed a problem where the reserved name check did not handle
13510 NamePaths with multiple NameSegs correctly. The first nameseg of
13511 the NamePath was examined instead of the last NameSeg.
13514 ----------------------------------------
13516 02 October 2002. Summary of changes for this release.
13519 1) ACPI CA Core Subsystem version 20021002:
13521 Fixed a problem where a store/copy of a string to an existing
13522 string did not always set the string length properly in the String
13525 Fixed a reported problem with the ToString operator where the
13526 behavior was identical to the ToHexString operator instead of just
13527 simply converting a raw buffer to a string data type.
13529 Fixed a problem where CopyObject and the other "explicit"
13530 conversion operators were not updating the internal namespace node
13531 type as part of the store operation.
13533 Fixed a memory leak during implicit source operand conversion
13534 where the original object was not deleted if it was converted to a
13535 new object of a different type.
13537 Enhanced error messages for all problems associated with namespace
13538 lookups. Common procedure generates and prints the lookup name as
13539 well as the formatted status.
13541 Completed implementation of a new design for the Alias support
13542 within the namespace. The existing design did not handle the case
13543 where a new object was assigned to one of the two names due to the
13544 use of an explicit conversion operator, resulting in the two names
13545 pointing to two different objects. The new design simply points
13546 the Alias name to the original name node - not to the object.
13547 This results in a level of indirection that must be handled in the
13548 name resolution mechanism.
13550 Code and Data Size: Current core subsystem library sizes are shown
13551 below. These are the code and data sizes for the acpica.lib
13552 produced by the Microsoft Visual C++ 6.0 compiler, and these
13553 values do not include any ACPI driver or OSPM code. The debug
13554 version of the code includes the debug output trace mechanism and
13555 has a larger code and data size. Note that these values will vary
13556 depending on the efficiency of the compiler and the compiler
13557 options used during generation.
13560 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13561 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13563 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13564 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13569 Initialize thermal driver's timer before it is used. (Knut
13572 Allow handling negative celsius values. (Kochi Takayoshi)
13574 Fix thermal management and make trip points. R/W (Pavel Machek)
13576 Fix /proc/acpi/sleep. (P. Christeas)
13578 IA64 fixes. (David Mosberger)
13580 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
13582 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
13586 3) iASL Compiler/Disassembler
13588 Clarified some warning/error messages.
13591 ----------------------------------------
13592 18 September 2002. Summary of changes for this release.
13595 1) ACPI CA Core Subsystem version 20020918:
13597 Fixed a reported problem with reference chaining (via the Index()
13598 and RefOf() operators) in the ObjectType() and SizeOf() operators.
13599 The definition of these operators includes the dereferencing of
13600 all chained references to return information on the base object.
13602 Fixed a problem with stores to indexed package elements - the
13603 existing code would not complete the store if an "implicit
13604 conversion" was not performed. In other words, if the existing
13605 object (package element) was to be replaced completely, the code
13606 didn't handle this case.
13608 Relaxed typechecking on the ASL "Scope" operator to allow the
13609 target name to refer to an object of type Integer, String, or
13610 Buffer, in addition to the scoping object types (Device,
13611 predefined Scopes, Processor, PowerResource, and ThermalZone.)
13612 This allows existing AML code that has workarounds for a bug in
13613 Windows to function properly. A warning is issued, however. This
13614 affects both the AML interpreter and the iASL compiler. Below is
13615 an example of this type of ASL code:
13621 Fixed some reported problems with 64-bit integer support in the
13622 local implementation of C library functions (clib.c)
13627 Use ACPI fix map region instead of IOAPIC region, since it is
13628 undefined in non-SMP.
13630 Ensure that the SCI has the proper polarity and trigger, even on
13631 systems that do not have an interrupt override entry in the MADT.
13633 2.5 big driver reorganization (Pat Mochel)
13635 Use early table mapping code from acpitable.c (Andi Kleen)
13637 New blacklist entries (Andi Kleen)
13639 Blacklist improvements. Split blacklist code out into a separate
13640 file. Move checking the blacklist to very early. Previously, we
13641 would use ACPI tables, and then halfway through init, check the
13642 blacklist -- too late. Now, it's early enough to completely fall-
13646 3) iASL Compiler/Disassembler version 20020918:
13648 Fixed a problem where the typechecking code didn't know that an
13649 alias could point to a method. In other words, aliases were not
13650 being dereferenced during typechecking.
13653 ----------------------------------------
13654 29 August 2002. Summary of changes for this release.
13656 1) ACPI CA Core Subsystem Version 20020829:
13658 If the target of a Scope() operator already exists, it must be an
13659 object type that actually opens a scope -- such as a Device,
13660 Method, Scope, etc. This is a fatal runtime error. Similar error
13661 check has been added to the iASL compiler also.
13663 Tightened up the namespace load to disallow multiple names in the
13664 same scope. This previously was allowed if both objects were of
13665 the same type. (i.e., a lookup was the same as entering a new
13671 Ensure that the ACPI interrupt has the proper trigger and
13674 local_irq_disable is extraneous. (Matthew Wilcox)
13676 Make "acpi=off" actually do what it says, and not use the ACPI
13677 interpreter *or* the tables.
13679 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
13683 3) iASL Compiler/Disassembler Version 20020829:
13685 Implemented namepath optimization for name declarations. For
13686 example, a declaration like "Method (\_SB_.ABCD)" would get
13687 optimized to "Method (ABCD)" if the declaration is within the
13688 \_SB_ scope. This optimization is in addition to the named
13689 reference path optimization first released in the previous
13690 version. This would seem to complete all possible optimizations
13691 for namepaths within the ASL/AML.
13693 If the target of a Scope() operator already exists, it must be an
13694 object type that actually opens a scope -- such as a Device,
13695 Method, Scope, etc.
13697 Implemented a check and warning for unreachable code in the same
13698 block below a Return() statement.
13700 Fixed a problem where the listing file was not generated if the
13701 compiler aborted if the maximum error count was exceeded (200).
13703 Fixed a problem where the typechecking of method return values was
13704 broken. This includes the check for a return value when the
13705 method is invoked as a TermArg (a return value is expected.)
13707 Fixed a reported problem where EOF conditions during a quoted
13708 string or comment caused a fault.
13711 ----------------------------------------
13712 15 August 2002. Summary of changes for this release.
13714 1) ACPI CA Core Subsystem Version 20020815:
13716 Fixed a reported problem where a Store to a method argument that
13717 contains a reference did not perform the indirect store correctly.
13718 This problem was created during the conversion to the new
13719 reference object model - the indirect store to a method argument
13720 code was not updated to reflect the new model.
13722 Reworked the ACPI mode change code to better conform to ACPI 2.0,
13723 handle corner cases, and improve code legibility (Kochi Takayoshi)
13725 Fixed a problem with the pathname parsing for the carat (^)
13726 prefix. The heavy use of the carat operator by the new namepath
13727 optimization in the iASL compiler uncovered a problem with the AML
13728 interpreter handling of this prefix. In the case where one or
13729 more carats precede a single nameseg, the nameseg was treated as
13730 standalone and the search rule (to root) was inadvertently
13731 applied. This could cause both the iASL compiler and the
13732 interpreter to find the wrong object or to miss the error that
13733 should occur if the object does not exist at that exact pathname.
13735 Found and fixed the problem where the HP Pavilion DSDT would not
13736 load. This was a relatively minor tweak to the table loading code
13737 (a problem caused by the unexpected encounter with a method
13738 invocation not within a control method), but it does not solve the
13739 overall issue of the execution of AML code at the table level.
13740 This investigation is still ongoing.
13742 Code and Data Size: Current core subsystem library sizes are shown
13743 below. These are the code and data sizes for the acpica.lib
13744 produced by the Microsoft Visual C++ 6.0 compiler, and these
13745 values do not include any ACPI driver or OSPM code. The debug
13746 version of the code includes the debug output trace mechanism and
13747 has a larger code and data size. Note that these values will vary
13748 depending on the efficiency of the compiler and the compiler
13749 options used during generation.
13752 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13753 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13755 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13756 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13761 Remove redundant slab.h include (Brad Hards)
13763 Fix several bugs in thermal.c (Herbert Nachtnebel)
13765 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
13767 Change acpi_system_suspend to use updated irq functions (Pavel
13770 Export acpi_get_firmware_table (Matthew Wilcox)
13772 Use proper root proc entry for ACPI (Kochi Takayoshi)
13774 Fix early-boot table parsing (Bjorn Helgaas)
13777 3) iASL Compiler/Disassembler
13779 Reworked the compiler options to make them more consistent and to
13780 use two-letter options where appropriate. We were running out of
13781 sensible letters. This may break some makefiles, so check the
13782 current options list by invoking the compiler with no parameters.
13784 Completed the design and implementation of the ASL namepath
13785 optimization option for the compiler. This option optimizes all
13786 references to named objects to the shortest possible path. The
13787 first attempt tries to utilize a single nameseg (4 characters) and
13788 the "search-to-root" algorithm used by the interpreter. If that
13789 cannot be used (because either the name is not in the search path
13790 or there is a conflict with another object with the same name),
13791 the pathname is optimized using the carat prefix (usually a
13792 shorter string than specifying the entire path from the root.)
13794 Implemented support to obtain the DSDT from the Windows registry
13795 (when the disassembly option is specified with no input file).
13796 Added this code as the implementation for AcpiOsTableOverride in
13797 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
13798 utility) to scan memory for the DSDT to the AcpiOsTableOverride
13799 function in the DOS OSL to make the disassembler truly OS
13802 Implemented a new option to disassemble and compile in one step.
13803 When used without an input filename, this option will grab the
13804 DSDT from the local machine, disassemble it, and compile it in one
13807 Added a warning message for invalid escapes (a backslash followed
13808 by any character other than the allowable escapes). This catches
13809 the quoted string error "\_SB_" (which should be "\\_SB_" ).
13811 Also, there are numerous instances in the ACPI specification where
13814 Added a compiler option to disable all optimizations. This is
13815 basically the "compatibility mode" because by using this option,
13816 the AML code will come out exactly the same as other ASL
13819 Added error messages for incorrectly ordered dependent resource
13820 functions. This includes: missing EndDependentFn macro at end of
13821 dependent resource list, nested dependent function macros (both
13822 start and end), and missing StartDependentFn macro. These are
13823 common errors that should be caught at compile time.
13825 Implemented _OSI support for the disassembler and compiler. _OSI
13826 must be included in the namespace for proper disassembly (because
13827 the disassembler must know the number of arguments.)
13829 Added an "optimization" message type that is optional (off by
13830 default). This message is used for all optimizations - including
13831 constant folding, integer optimization, and namepath optimization.
13833 ----------------------------------------
13834 25 July 2002. Summary of changes for this release.
13837 1) ACPI CA Core Subsystem Version 20020725:
13839 The AML Disassembler has been enhanced to produce compilable ASL
13840 code and has been integrated into the iASL compiler (see below) as
13841 well as the single-step disassembly for the AML debugger and the
13842 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
13843 resource templates and macros are fully supported. The
13844 disassembler has been tested on over 30 different AML files,
13845 producing identical AML when the resulting disassembled ASL file
13846 is recompiled with the same ASL compiler.
13848 Modified the Resource Manager to allow zero interrupts and zero
13849 dma channels during the GetCurrentResources call. This was
13850 causing problems on some platforms.
13852 Added the AcpiOsRedirectOutput interface to the OSL to simplify
13853 output redirection for the AcpiOsPrintf and AcpiOsVprintf
13856 Code and Data Size: Current core subsystem library sizes are shown
13857 below. These are the code and data sizes for the acpica.lib
13858 produced by the Microsoft Visual C++ 6.0 compiler, and these
13859 values do not include any ACPI driver or OSPM code. The debug
13860 version of the code includes the debug output trace mechanism and
13861 has a larger code and data size. Note that these values will vary
13862 depending on the efficiency of the compiler and the compiler
13863 options used during generation.
13866 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13867 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13869 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13870 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13875 Fixed a panic in the EC driver (Dominik Brodowski)
13877 Implemented checksum of the R/XSDT itself during Linux table scan
13883 The AML disassembler is integrated into the compiler. The "-d"
13884 option invokes the disassembler to completely disassemble an
13885 input AML file, producing as output a text ASL file with the
13886 extension ".dsl" (to avoid name collisions with existing .asl
13887 source files.) A future enhancement will allow the disassembler
13888 to obtain the BIOS DSDT from the registry under Windows.
13890 Fixed a problem with the VendorShort and VendorLong resource
13891 descriptors where an invalid AML sequence was created.
13893 Implemented a fix for BufferData term in the ASL parser. It was
13894 inadvertently defined twice, allowing invalid syntax to pass and
13895 causing reduction conflicts.
13897 Fixed a problem where the Ones opcode could get converted to a
13898 value of zero if "Ones" was used where a byte, word or dword value
13899 was expected. The 64-bit value is now truncated to the correct
13900 size with the correct value.
13904 ----------------------------------------
13905 02 July 2002. Summary of changes for this release.
13908 1) ACPI CA Core Subsystem Version 20020702:
13910 The Table Manager code has been restructured to add several new
13911 features. Tables that are not required by the core subsystem
13912 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
13913 validated in any way and are returned from AcpiGetFirmwareTable if
13914 requested. The AcpiOsTableOverride interface is now called for
13915 each table that is loaded by the subsystem in order to allow the
13916 host to override any table it chooses. Previously, only the DSDT
13917 could be overridden. Added one new files, tbrsdt.c and
13920 Fixed a problem with the conversion of internal package objects to
13921 external objects (when a package is returned from a control
13922 method.) The return buffer length was set to zero instead of the
13923 proper length of the package object.
13925 Fixed a reported problem with the use of the RefOf and DeRefOf
13926 operators when passing reference arguments to control methods. A
13927 new type of Reference object is used internally for references
13928 produced by the RefOf operator.
13930 Added additional error messages in the Resource Manager to explain
13931 AE_BAD_DATA errors when they occur during resource parsing.
13933 Split the AcpiEnableSubsystem into two primitives to enable a
13934 finer granularity initialization sequence. These two calls should
13935 be called in this order: AcpiEnableSubsystem (flags),
13936 AcpiInitializeObjects (flags). The flags parameter remains the
13942 Updated the ACPI utilities module to understand the new style of
13943 fully resolved package objects that are now returned from the core
13944 subsystem. This eliminates errors of the form:
13946 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
13947 acpi_utils-0430 [145] acpi_evaluate_reference:
13948 Invalid element in package (not a device reference)
13950 The method evaluation utility uses the new buffer allocation
13951 scheme instead of calling AcpiEvaluate Object twice.
13953 Added support for ECDT. This allows the use of the Embedded
13955 Controller before the namespace has been fully initialized, which
13956 is necessary for ACPI 2.0 support, and for some laptops to
13957 initialize properly. (Laptops using ECDT are still rare, so only
13958 limited testing was performed of the added functionality.)
13960 Fixed memory leaks in the EC driver.
13962 Eliminated a brittle code structure in acpi_bus_init().
13964 Eliminated the acpi_evaluate() helper function in utils.c. It is
13965 no longer needed since acpi_evaluate_object can optionally
13966 allocate memory for the return object.
13968 Implemented fix for keyboard hang when getting battery readings on
13969 some systems (Stephen White)
13971 PCI IRQ routing update (Dominik Brodowski)
13973 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
13976 ----------------------------------------
13977 11 June 2002. Summary of changes for this release.
13980 1) ACPI CA Core Subsystem Version 20020611:
13982 Fixed a reported problem where constants such as Zero and One
13983 appearing within _PRT packages were not handled correctly within
13984 the resource manager code. Originally reported against the ASL
13985 compiler because the code generator now optimizes integers to
13986 their minimal AML representation (i.e. AML constants if possible.)
13987 The _PRT code now handles all AML constant opcodes correctly
13988 (Zero, One, Ones, Revision).
13990 Fixed a problem with the Concatenate operator in the AML
13991 interpreter where a buffer result object was incorrectly marked as
13992 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
13994 All package sub-objects are now fully resolved before they are
13995 returned from the external ACPI interfaces. This means that name
13996 strings are resolved to object handles, and constant operators
13997 (Zero, One, Ones, Revision) are resolved to Integers.
13999 Implemented immediate resolution of the AML Constant opcodes
14000 (Zero, One, Ones, Revision) to Integer objects upon detection
14001 within the AML stream. This has simplified and reduced the
14002 generated code size of the subsystem by eliminating about 10
14003 switch statements for these constants (which previously were
14004 contained in Reference objects.) The complicating issues are that
14005 the Zero opcode is used as a "placeholder" for unspecified
14006 optional target operands and stores to constants are defined to be
14009 Code and Data Size: Current core subsystem library sizes are shown
14010 below. These are the code and data sizes for the acpica.lib
14011 produced by the Microsoft Visual C++ 6.0 compiler, and these
14012 values do not include any ACPI driver or OSPM code. The debug
14013 version of the code includes the debug output trace mechanism and
14014 has a larger code and data size. Note that these values will vary
14015 depending on the efficiency of the compiler and the compiler
14016 options used during generation.
14019 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14020 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14022 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14023 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14029 Added preliminary support for obtaining _TRA data for PCI root
14030 bridges (Bjorn Helgaas).
14033 3) iASL Compiler Version X2046:
14035 Fixed a problem where the "_DDN" reserved name was defined to be a
14036 control method with one argument. There are no arguments, and
14037 _DDN does not have to be a control method.
14039 Fixed a problem with the Linux version of the compiler where the
14040 source lines printed with error messages were the wrong lines.
14041 This turned out to be the "LF versus CR/LF" difference between
14042 Windows and Unix. This appears to be the longstanding issue
14043 concerning listing output and error messages.
14045 Fixed a problem with the Linux version of compiler where opcode
14046 names within error messages were wrong. This was caused by a
14047 slight difference in the output of the Flex tool on Linux versus
14050 Fixed a problem with the Linux compiler where the hex output files
14051 contained some garbage data caused by an internal buffer overrun.
14054 ----------------------------------------
14055 17 May 2002. Summary of changes for this release.
14058 1) ACPI CA Core Subsystem Version 20020517:
14060 Implemented a workaround to an BIOS bug discovered on the HP
14061 OmniBook where the FADT revision number and the table size are
14062 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14063 behavior is to fallback to using only the ACPI 1.0 fields of the
14064 FADT if the table is too small to be a ACPI 2.0 table as claimed
14065 by the revision number. Although this is a BIOS bug, this is a
14066 case where the workaround is simple enough and with no side
14067 effects, so it seemed prudent to add it. A warning message is
14070 Implemented minimum size checks for the fixed-length ACPI tables -
14071 - the FADT and FACS, as well as consistency checks between the
14072 revision number and the table size.
14074 Fixed a reported problem in the table override support where the
14075 new table pointer was incorrectly treated as a physical address
14076 instead of a logical address.
14078 Eliminated the use of the AE_AML_ERROR exception and replaced it
14079 with more descriptive codes.
14081 Fixed a problem where an exception would occur if an ASL Field was
14082 defined with no named Field Units underneath it (used by some
14085 Code and Data Size: Current core subsystem library sizes are shown
14086 below. These are the code and data sizes for the acpica.lib
14087 produced by the Microsoft Visual C++ 6.0 compiler, and these
14088 values do not include any ACPI driver or OSPM code. The debug
14089 version of the code includes the debug output trace mechanism and
14090 has a larger code and data size. Note that these values will vary
14091 depending on the efficiency of the compiler and the compiler
14092 options used during generation.
14095 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14096 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14098 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14099 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14105 Much work done on ACPI init (MADT and PCI IRQ routing support).
14106 (Paul D. and Dominik Brodowski)
14108 Fix PCI IRQ-related panic on boot (Sam Revitch)
14110 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14112 Fix "MHz" typo (Dominik Brodowski)
14114 Fix RTC year 2000 issue (Dominik Brodowski)
14116 Preclude multiple button proc entries (Eric Brunet)
14118 Moved arch-specific code out of include/platform/aclinux.h
14120 3) iASL Compiler Version X2044:
14122 Implemented error checking for the string used in the EISAID macro
14123 (Usually used in the definition of the _HID object.) The code now
14124 strictly enforces the PnP format - exactly 7 characters, 3
14125 uppercase letters and 4 hex digits.
14127 If a raw string is used in the definition of the _HID object
14128 (instead of the EISAID macro), the string must contain all
14129 alphanumeric characters (e.g., "*PNP0011" is not allowed because
14132 Implemented checking for invalid use of ACPI reserved names for
14133 most of the name creation operators (Name, Device, Event, Mutex,
14134 OperationRegion, PowerResource, Processor, and ThermalZone.)
14135 Previously, this check was only performed for control methods.
14137 Implemented an additional check on the Name operator to emit an
14138 error if a reserved name that must be implemented in ASL as a
14139 control method is used. We know that a reserved name must be a
14140 method if it is defined with input arguments.
14142 The warning emitted when a namespace object reference is not found
14143 during the cross reference phase has been changed into an error.
14144 The "External" directive should be used for names defined in other
14148 4) Tools and Utilities
14150 The 16-bit tools (adump16 and aexec16) have been regenerated and
14153 Fixed a problem with the output of both acpidump and adump16 where
14154 the indentation of closing parentheses and brackets was not
14156 aligned properly with the parent block.
14159 ----------------------------------------
14160 03 May 2002. Summary of changes for this release.
14163 1) ACPI CA Core Subsystem Version 20020503:
14165 Added support a new OSL interface that allows the host operating
14167 system software to override the DSDT found in the firmware -
14168 AcpiOsTableOverride. With this interface, the OSL can examine the
14169 version of the firmware DSDT and replace it with a different one
14172 Added new external interfaces for accessing ACPI registers from
14173 device drivers and other system software - AcpiGetRegister and
14174 AcpiSetRegister. This was simply an externalization of the
14175 existing AcpiHwBitRegister interfaces.
14177 Fixed a regression introduced in the previous build where the
14178 ASL/AML CreateField operator always returned an error,
14179 "destination must be a NS Node".
14181 Extended the maximum time (before failure) to successfully enable
14182 ACPI mode to 3 seconds.
14184 Code and Data Size: Current core subsystem library sizes are shown
14185 below. These are the code and data sizes for the acpica.lib
14186 produced by the Microsoft Visual C++ 6.0 compiler, and these
14187 values do not include any ACPI driver or OSPM code. The debug
14188 version of the code includes the debug output trace mechanism and
14189 has a larger code and data size. Note that these values will vary
14190 depending on the efficiency of the compiler and the compiler
14191 options used during generation.
14194 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14195 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14197 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14198 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14203 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
14204 free. While 3 out of 4 of our in-house systems work fine, the last
14205 one still hangs when testing the LAPIC timer.
14207 Renamed many files in 2.5 kernel release to omit "acpi_" from the
14210 Added warning on boot for Presario 711FR.
14212 Sleep improvements (Pavel Machek)
14214 ACPI can now be built without CONFIG_PCI enabled.
14216 IA64: Fixed memory map functions (JI Lee)
14219 3) iASL Compiler Version X2043:
14221 Added support to allow the compiler to be integrated into the MS
14222 VC++ development environment for one-button compilation of single
14223 files or entire projects -- with error-to-source-line mapping.
14225 Implemented support for compile-time constant folding for the
14226 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
14227 specification. This allows the ASL writer to use expressions
14228 instead of Integer/Buffer/String constants in terms that must
14229 evaluate to constants at compile time and will also simplify the
14230 emitted AML in any such sub-expressions that can be folded
14231 (evaluated at compile-time.) This increases the size of the
14232 compiler significantly because a portion of the ACPI CA AML
14233 interpreter is included within the compiler in order to pre-
14234 evaluate constant expressions.
14237 Fixed a problem with the "Unicode" ASL macro that caused the
14238 compiler to fault. (This macro is used in conjunction with the
14239 _STR reserved name.)
14241 Implemented an AML opcode optimization to use the Zero, One, and
14242 Ones opcodes where possible to further reduce the size of integer
14243 constants and thus reduce the overall size of the generated AML
14246 Implemented error checking for new reserved terms for ACPI version
14249 Implemented the -qr option to display the current list of ACPI
14250 reserved names known to the compiler.
14252 Implemented the -qc option to display the current list of ASL
14253 operators that are allowed within constant expressions and can
14254 therefore be folded at compile time if the operands are constants.
14259 Updated the Programmer's Reference for new interfaces, data types,
14260 and memory allocation model options.
14262 Updated the iASL Compiler User Reference to apply new format and
14263 add information about new features and options.
14265 ----------------------------------------
14266 19 April 2002. Summary of changes for this release.
14268 1) ACPI CA Core Subsystem Version 20020419:
14270 The source code base for the Core Subsystem has been completely
14271 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
14272 versions. The Lint option files used are included in the
14273 /acpi/generate/lint directory.
14275 Implemented enhanced status/error checking across the entire
14276 Hardware manager subsystem. Any hardware errors (reported from
14277 the OSL) are now bubbled up and will abort a running control
14281 Fixed a problem where the per-ACPI-table integer width (32 or 64)
14282 was stored only with control method nodes, causing a fault when
14283 non-control method code was executed during table loading. The
14284 solution implemented uses a global variable to indicate table
14285 width across the entire ACPI subsystem. Therefore, ACPI CA does
14286 not support mixed integer widths across different ACPI tables
14289 Fixed a problem where NULL extended fields (X fields) in an ACPI
14290 2.0 ACPI FADT caused the table load to fail. Although the
14291 existing ACPI specification is a bit fuzzy on this topic, the new
14292 behavior is to fall back on a ACPI 1.0 field if the corresponding
14293 ACPI 2.0 X field is zero (even though the table revision indicates
14294 a full ACPI 2.0 table.) The ACPI specification will be updated to
14295 clarify this issue.
14297 Fixed a problem with the SystemMemory operation region handler
14298 where memory was always accessed byte-wise even if the AML-
14299 specified access width was larger than a byte. This caused
14300 problems on systems with memory-mapped I/O. Memory is now
14301 accessed with the width specified. On systems that do not support
14302 non-aligned transfers, a check is made to guarantee proper address
14303 alignment before proceeding in order to avoid an AML-caused
14304 alignment fault within the kernel.
14307 Fixed a problem with the ExtendedIrq resource where only one byte
14308 of the 4-byte Irq field was extracted.
14310 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
14311 function was out of date and required a rewrite.
14313 Code and Data Size: Current core subsystem library sizes are shown
14314 below. These are the code and data sizes for the acpica.lib
14315 produced by the Microsoft Visual C++ 6.0 compiler, and these
14316 values do not include any ACPI driver or OSPM code. The debug
14317 version of the code includes the debug output trace mechanism and
14318 has a larger code and data size. Note that these values will vary
14319 depending on the efficiency of the compiler and the compiler
14320 options used during generation.
14323 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14324 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14326 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14327 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14332 PCI IRQ routing fixes (Dominik Brodowski)
14335 3) iASL Compiler Version X2042:
14337 Implemented an additional compile-time error check for a field
14338 unit whose size + minimum access width would cause a run-time
14339 access beyond the end-of-region. Previously, only the field size
14340 itself was checked.
14342 The Core subsystem and iASL compiler now share a common parse
14343 object in preparation for compile-time evaluation of the type
14344 3/4/5 ASL operators.
14347 ----------------------------------------
14348 Summary of changes for this release: 03_29_02
14350 1) ACPI CA Core Subsystem Version 20020329:
14352 Implemented support for late evaluation of TermArg operands to
14353 Buffer and Package objects. This allows complex expressions to be
14354 used in the declarations of these object types.
14356 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
14357 1.0, if the field was larger than 32 bits, it was returned as a
14358 buffer - otherwise it was returned as an integer. In ACPI 2.0,
14359 the field is returned as a buffer only if the field is larger than
14360 64 bits. The TableRevision is now considered when making this
14361 conversion to avoid incompatibility with existing ASL code.
14363 Implemented logical addressing for AcpiOsGetRootPointer. This
14364 allows an RSDP with either a logical or physical address. With
14365 this support, the host OS can now override all ACPI tables with
14366 one logical RSDP. Includes implementation of "typed" pointer
14367 support to allow a common data type for both physical and logical
14368 pointers internally. This required a change to the
14369 AcpiOsGetRootPointer interface.
14371 Implemented the use of ACPI 2.0 Generic Address Structures for all
14372 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
14373 mapped I/O for these ACPI features.
14375 Initialization now ignores not only non-required tables (All
14376 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
14377 not validate the table headers of unrecognized tables.
14379 Fixed a problem where a notify handler could only be
14380 installed/removed on an object of type Device. All "notify"
14382 objects are now supported -- Devices, Processor, Power, and
14385 Removed most verbosity from the ACPI_DB_INFO debug level. Only
14386 critical information is returned when this debug level is enabled.
14388 Code and Data Size: Current core subsystem library sizes are shown
14389 below. These are the code and data sizes for the acpica.lib
14390 produced by the Microsoft Visual C++ 6.0 compiler, and these
14391 values do not include any ACPI driver or OSPM code. The debug
14392 version of the code includes the debug output trace mechanism and
14393 has a larger code and data size. Note that these values will vary
14394 depending on the efficiency of the compiler and the compiler
14395 options used during generation.
14398 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14399 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14401 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14402 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14407 The processor driver (acpi_processor.c) now fully supports ACPI
14408 2.0-based processor performance control (e.g. Intel(R)
14409 SpeedStep(TM) technology) Note that older laptops that only have
14410 the Intel "applet" interface are not supported through this. The
14411 'limit' and 'performance' interface (/proc) are fully functional.
14412 [Note that basic policy for controlling performance state
14413 transitions will be included in the next version of ospmd.] The
14414 idle handler was modified to more aggressively use C2, and PIIX4
14415 errata handling underwent a complete overhaul (big thanks to
14416 Dominik Brodowski).
14418 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
14419 based devices in the ACPI namespace are now dynamically bound
14420 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
14421 This allows, among other things, ACPI to resolve bus numbers for
14422 subordinate PCI bridges.
14424 Enhanced PCI IRQ routing to get the proper bus number for _PRT
14425 entries defined underneath PCI bridges.
14427 Added IBM 600E to bad bios list due to invalid _ADR value for
14428 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
14430 In the process of adding full MADT support (e.g. IOAPIC) for IA32
14431 (acpi.c, mpparse.c) -- stay tuned.
14433 Added back visual differentiation between fixed-feature and
14434 control-method buttons in dmesg. Buttons are also subtyped (e.g.
14435 button/power/PWRF) to simplify button identification.
14437 We no longer use -Wno-unused when compiling debug. Please ignore
14438 any "_THIS_MODULE defined but not used" messages.
14440 Can now shut down the system using "magic sysrq" key.
14443 3) iASL Compiler version 2041:
14445 Fixed a problem where conversion errors for hex/octal/decimal
14446 constants were not reported.
14448 Implemented a fix for the General Register template Address field.
14449 This field was 8 bits when it should be 64.
14451 Fixed a problem where errors/warnings were no longer being emitted
14452 within the listing output file.
14454 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
14455 exactly 4 characters, alphanumeric only.
14460 ----------------------------------------
14461 Summary of changes for this release: 03_08_02
14464 1) ACPI CA Core Subsystem Version 20020308:
14466 Fixed a problem with AML Fields where the use of the "AccessAny"
14467 keyword could cause an interpreter error due to attempting to read
14468 or write beyond the end of the parent Operation Region.
14470 Fixed a problem in the SystemMemory Operation Region handler where
14471 an attempt was made to map memory beyond the end of the region.
14472 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
14473 errors on some Linux systems.
14475 Fixed a problem where the interpreter/namespace "search to root"
14476 algorithm was not functioning for some object types. Relaxed the
14477 internal restriction on the search to allow upsearches for all
14478 external object types as well as most internal types.
14483 We now use safe_halt() macro versus individual calls to sti | hlt.
14485 Writing to the processor limit interface should now work. "echo 1"
14486 will increase the limit, 2 will decrease, and 0 will reset to the
14493 Fixed segfault on Linux version.
14496 ----------------------------------------
14497 Summary of changes for this release: 02_25_02
14499 1) ACPI CA Core Subsystem:
14502 Fixed a problem where the GPE bit masks were not initialized
14503 properly, causing erratic GPE behavior.
14505 Implemented limited support for multiple calling conventions. The
14506 code can be generated with either the VPL (variable parameter
14507 list, or "C") convention, or the FPL (fixed parameter list, or
14508 "Pascal") convention. The core subsystem is about 3.4% smaller
14509 when generated with FPL.
14514 Re-add some /proc/acpi/event functionality that was lost during
14517 Resolved issue with /proc events for fixed-feature buttons showing
14518 up as the system device.
14520 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
14522 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
14524 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
14526 Fixed limit interface & usage to fix bugs with passive cooling
14529 Restructured PRT support.
14532 ----------------------------------------
14533 Summary of changes for this label: 02_14_02
14536 1) ACPI CA Core Subsystem:
14538 Implemented support in AcpiLoadTable to allow loading of FACS and
14541 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
14542 been removed. All 64-bit platforms should be migrated to the ACPI
14543 2.0 tables. The actbl71.h header has been removed from the source
14546 All C macros defined within the subsystem have been prefixed with
14547 "ACPI_" to avoid collision with other system include files.
14549 Removed the return value for the two AcpiOsPrint interfaces, since
14550 it is never used and causes lint warnings for ignoring the return
14553 Added error checking to all internal mutex acquire and release
14554 calls. Although a failure from one of these interfaces is
14555 probably a fatal system error, these checks will cause the
14556 immediate abort of the currently executing method or interface.
14558 Fixed a problem where the AcpiSetCurrentResources interface could
14559 fault. This was a side effect of the deployment of the new memory
14562 Fixed a couple of problems with the Global Lock support introduced
14563 in the last major build. The "common" (1.0/2.0) internal FACS was
14564 being overwritten with the FACS signature and clobbering the
14565 Global Lock pointer. Also, the actual firmware FACS was being
14566 unmapped after construction of the "common" FACS, preventing
14567 access to the actual Global Lock field within it. The "common"
14568 internal FACS is no longer installed as an actual ACPI table; it
14569 is used simply as a global.
14571 Code and Data Size: Current core subsystem library sizes are shown
14572 below. These are the code and data sizes for the acpica.lib
14573 produced by the Microsoft Visual C++ 6.0 compiler, and these
14574 values do not include any ACPI driver or OSPM code. The debug
14575 version of the code includes the debug output trace mechanism and
14576 has a larger code and data size. Note that these values will vary
14577 depending on the efficiency of the compiler and the compiler
14578 options used during generation.
14580 Previous Release (02_07_01)
14581 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14582 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14584 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14585 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14590 Updated Linux-specific code for core macro and OSL interface
14591 changes described above.
14593 Improved /proc/acpi/event. It now can be opened only once and has
14594 proper poll functionality.
14596 Fixed and restructured power management (acpi_bus).
14598 Only create /proc "view by type" when devices of that class exist.
14600 Fixed "charging/discharging" bug (and others) in acpi_battery.
14602 Improved thermal zone code.
14605 3) ASL Compiler, version X2039:
14608 Implemented the new compiler restriction on ASL String hex/octal
14609 escapes to non-null, ASCII values. An error results if an invalid
14610 value is used. (This will require an ACPI 2.0 specification
14613 AML object labels that are output to the optional C and ASM source
14614 are now prefixed with both the ACPI table signature and table ID
14615 to help guarantee uniqueness within a large BIOS project.
14618 ----------------------------------------
14619 Summary of changes for this label: 02_01_02
14621 1) ACPI CA Core Subsystem:
14623 ACPI 2.0 support is complete in the entire Core Subsystem and the
14624 ASL compiler. All new ACPI 2.0 operators are implemented and all
14625 other changes for ACPI 2.0 support are complete. With
14626 simultaneous code and data optimizations throughout the subsystem,
14627 ACPI 2.0 support has been implemented with almost no additional
14628 cost in terms of code and data size.
14630 Implemented a new mechanism for allocation of return buffers. If
14631 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
14632 be allocated on behalf of the caller. Consolidated all return
14633 buffer validation and allocation to a common procedure. Return
14634 buffers will be allocated via the primary OSL allocation interface
14635 since it appears that a separate pool is not needed by most users.
14636 If a separate pool is required for these buffers, the caller can
14637 still use the original mechanism and pre-allocate the buffer(s).
14639 Implemented support for string operands within the DerefOf
14642 Restructured the Hardware and Event managers to be table driven,
14643 simplifying the source code and reducing the amount of generated
14646 Split the common read/write low-level ACPI register bitfield
14647 procedure into a separate read and write, simplifying the code
14650 Obsoleted the AcpiOsCallocate OSL interface. This interface was
14651 used only a handful of times and didn't have enough critical mass
14652 for a separate interface. Replaced with a common calloc procedure
14655 Fixed a reported problem with the GPE number mapping mechanism
14656 that allows GPE1 numbers to be non-contiguous with GPE0.
14657 Reorganized the GPE information and shrunk a large array that was
14658 originally large enough to hold info for all possible GPEs (256)
14659 to simply large enough to hold all GPEs up to the largest GPE
14660 number on the machine.
14662 Fixed a reported problem with resource structure alignment on 64-
14665 Changed the AcpiEnableEvent and AcpiDisableEvent external
14666 interfaces to not require any flags for the common case of
14667 enabling/disabling a GPE.
14669 Implemented support to allow a "Notify" on a Processor object.
14671 Most TBDs in comments within the source code have been resolved
14675 Fixed a problem in the interpreter where a standalone parent
14676 prefix (^) was not handled correctly in the interpreter and
14679 Removed obsolete and unnecessary GPE save/restore code.
14681 Implemented Field support in the ASL Load operator. This allows a
14682 table to be loaded from a named field, in addition to loading a
14683 table directly from an Operation Region.
14685 Implemented timeout and handle support in the external Global Lock
14688 Fixed a problem in the AcpiDump utility where pathnames were no
14689 longer being generated correctly during the dump of named objects.
14691 Modified the AML debugger to give a full display of if/while
14692 predicates instead of just one AML opcode at a time. (The
14693 predicate can have several nested ASL statements.) The old method
14694 was confusing during single stepping.
14696 Code and Data Size: Current core subsystem library sizes are shown
14697 below. These are the code and data sizes for the acpica.lib
14698 produced by the Microsoft Visual C++ 6.0 compiler, and these
14699 values do not include any ACPI driver or OSPM code. The debug
14700 version of the code includes the debug output trace mechanism and
14701 has a larger code and data size. Note that these values will vary
14702 depending on the efficiency of the compiler and the compiler
14703 options used during generation.
14705 Previous Release (12_18_01)
14706 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14707 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14709 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14710 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14714 Implemented fix for PIIX reverse throttling errata (Processor
14717 Added new Limit interface (Processor and Thermal drivers)
14719 New thermal policy (Thermal driver)
14721 Many updates to /proc
14723 Battery "low" event support (Battery driver)
14725 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
14727 IA32 - IA64 initialization unification, no longer experimental
14729 Menuconfig options redesigned
14731 3) ASL Compiler, version X2037:
14733 Implemented several new output features to simplify integration of
14734 AML code into firmware: 1) Output the AML in C source code with
14735 labels for each named ASL object. The original ASL source code
14736 is interleaved as C comments. 2) Output the AML in ASM source code
14737 with labels and interleaved ASL source. 3) Output the AML in
14738 raw hex table form, in either C or ASM.
14740 Implemented support for optional string parameters to the
14741 LoadTable operator.
14743 Completed support for embedded escape sequences within string
14744 literals. The compiler now supports all single character escapes
14745 as well as the Octal and Hex escapes. Note: the insertion of a
14746 null byte into a string literal (via the hex/octal escape) causes
14747 the string to be immediately terminated. A warning is issued.
14749 Fixed a problem where incorrect AML was generated for the case
14750 where an ASL namepath consists of a single parent prefix (
14752 ) with no trailing name segments.
14754 The compiler has been successfully generated with a 64-bit C
14760 ----------------------------------------
14761 Summary of changes for this label: 12_18_01
14765 Enhanced blacklist with reason and severity fields. Any table's
14766 signature may now be used to identify a blacklisted system.
14768 Call _PIC control method to inform the firmware which interrupt
14769 model the OS is using. Turn on any disabled link devices.
14771 Cleaned up busmgr /proc error handling (Andreas Dilger)
14773 2) ACPI CA Core Subsystem:
14775 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
14778 Completed implementation of the ACPI 2.0 "Continue",
14779 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
14780 operators. All new ACPI 2.0 operators are now implemented in both
14781 the ASL compiler and the AML interpreter. The only remaining ACPI
14782 2.0 task is support for the String data type in the DerefOf
14783 operator. Fixed a problem with AcquireMutex where the status code
14784 was lost if the caller had to actually wait for the mutex.
14786 Increased the maximum ASL Field size from 64K bits to 4G bits.
14788 Completed implementation of the external Global Lock interfaces --
14789 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
14790 Handler parameters were added.
14792 Completed another pass at removing warnings and issues when
14793 compiling with 64-bit compilers. The code now compiles cleanly
14794 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
14795 add and subtract (diff) macros have changed considerably.
14798 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
14799 64-bit platforms, 32-bits on all others. This type is used
14800 wherever memory allocation and/or the C sizeof() operator is used,
14801 and affects the OSL memory allocation interfaces AcpiOsAllocate
14802 and AcpiOsCallocate.
14804 Implemented sticky user breakpoints in the AML debugger.
14806 Code and Data Size: Current core subsystem library sizes are shown
14807 below. These are the code and data sizes for the acpica.lib
14808 produced by the Microsoft Visual C++ 6.0 compiler, and these
14809 values do not include any ACPI driver or OSPM code. The debug
14810 version of the code includes the debug output trace mechanism and
14811 has a larger code and data size. Note that these values will vary
14812 depending on the efficiency of the compiler and the compiler
14813 options used during generation.
14815 Previous Release (12_05_01)
14816 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14817 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14819 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14820 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14822 3) ASL Compiler, version X2034:
14824 Now checks for (and generates an error if detected) the use of a
14825 Break or Continue statement without an enclosing While statement.
14828 Successfully generated the compiler with the Intel 64-bit C
14831 ----------------------------------------
14832 Summary of changes for this label: 12_05_01
14834 1) ACPI CA Core Subsystem:
14836 The ACPI 2.0 CopyObject operator is fully implemented. This
14837 operator creates a new copy of an object (and is also used to
14838 bypass the "implicit conversion" mechanism of the Store operator.)
14840 The ACPI 2.0 semantics for the SizeOf operator are fully
14841 implemented. The change is that performing a SizeOf on a
14842 reference object causes an automatic dereference of the object to
14843 tha actual value before the size is evaluated. This behavior was
14844 undefined in ACPI 1.0.
14846 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
14847 have been implemented. The interrupt polarity and mode are now
14850 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
14851 appearing in Package objects were not properly converted to
14852 integers when the internal Package was converted to an external
14853 object (via the AcpiEvaluateObject interface.)
14855 Fixed a problem with the namespace object deletion mechanism for
14856 objects created by control methods. There were two parts to this
14857 problem: 1) Objects created during the initialization phase method
14858 parse were not being deleted, and 2) The object owner ID mechanism
14859 to track objects was broken.
14861 Fixed a problem where the use of the ASL Scope operator within a
14862 control method would result in an invalid opcode exception.
14864 Fixed a problem introduced in the previous label where the buffer
14865 length required for the _PRT structure was not being returned
14868 Code and Data Size: Current core subsystem library sizes are shown
14869 below. These are the code and data sizes for the acpica.lib
14870 produced by the Microsoft Visual C++ 6.0 compiler, and these
14871 values do not include any ACPI driver or OSPM code. The debug
14872 version of the code includes the debug output trace mechanism and
14873 has a larger code and data size. Note that these values will vary
14874 depending on the efficiency of the compiler and the compiler
14875 options used during generation.
14877 Previous Release (11_20_01)
14878 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14879 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14882 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14883 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14887 Updated all files to apply cleanly against 2.4.16.
14889 Added basic PCI Interrupt Routing Table (PRT) support for IA32
14890 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
14891 version supports both static and dyanmic PRT entries, but dynamic
14892 entries are treated as if they were static (not yet
14893 reconfigurable). Architecture- specific code to use this data is
14894 absent on IA32 but should be available shortly.
14896 Changed the initialization sequence to start the ACPI interpreter
14897 (acpi_init) prior to initialization of the PCI driver (pci_init)
14898 in init/main.c. This ordering is required to support PRT and
14899 facilitate other (future) enhancement. A side effect is that the
14900 ACPI bus driver and certain device drivers can no longer be loaded
14903 Modified the 'make menuconfig' options to allow PCI Interrupt
14904 Routing support to be included without the ACPI Bus and other
14907 3) ASL Compiler, version X2033:
14909 Fixed some issues with the use of the new CopyObject and
14910 DataTableRegion operators. Both are fully functional.
14912 ----------------------------------------
14913 Summary of changes for this label: 11_20_01
14915 20 November 2001. Summary of changes for this release.
14917 1) ACPI CA Core Subsystem:
14919 Updated Index support to match ACPI 2.0 semantics. Storing a
14920 Integer, String, or Buffer to an Index of a Buffer will store only
14921 the least-significant byte of the source to the Indexed buffer
14922 byte. Multiple writes are not performed.
14924 Fixed a problem where the access type used in an AccessAs ASL
14925 operator was not recorded correctly into the field object.
14927 Fixed a problem where ASL Event objects were created in a
14928 signalled state. Events are now created in an unsignalled state.
14930 The internal object cache is now purged after table loading and
14931 initialization to reduce the use of dynamic kernel memory -- on
14932 the assumption that object use is greatest during the parse phase
14933 of the entire table (versus the run-time use of individual control
14936 ACPI 2.0 variable-length packages are now fully operational.
14938 Code and Data Size: Code and Data optimizations have permitted new
14939 feature development with an actual reduction in the library size.
14940 Current core subsystem library sizes are shown below. These are
14941 the code and data sizes for the acpica.lib produced by the
14942 Microsoft Visual C++ 6.0 compiler, and these values do not include
14943 any ACPI driver or OSPM code. The debug version of the code
14944 includes the debug output trace mechanism and has a larger code
14945 and data size. Note that these values will vary depending on the
14946 efficiency of the compiler and the compiler options used during
14949 Previous Release (11_09_01):
14950 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14951 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14954 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14955 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14959 Enhanced the ACPI boot-time initialization code to allow the use
14960 of Local APIC tables for processor enumeration on IA-32, and to
14961 pave the way for a fully MPS-free boot (on SMP systems) in the
14962 near future. This functionality replaces
14963 arch/i386/kernel/acpitables.c, which was introduced in an earlier
14964 2.4.15-preX release. To enable this feature you must add
14965 "acpi_boot=on" to the kernel command line -- see the help entry
14966 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
14969 Restructured the configuration options to allow boot-time table
14970 parsing support without inclusion of the ACPI Interpreter (and
14973 NOTE: This release does not include fixes for the reported events,
14974 power-down, and thermal passive cooling issues (coming soon).
14978 Added additional typechecking for Fields within restricted access
14979 Operation Regions. All fields within EC and CMOS regions must be
14980 declared with ByteAcc. All fields withing SMBus regions must be
14981 declared with the BufferAcc access type.
14983 Fixed a problem where the listing file output of control methods
14984 no longer interleaved the actual AML code with the ASL source
14990 ----------------------------------------
14991 Summary of changes for this label: 11_09_01
14993 1) ACPI CA Core Subsystem:
14995 Implemented ACPI 2.0-defined support for writes to fields with a
14996 Buffer, String, or Integer source operand that is smaller than the
14997 target field. In these cases, the source operand is zero-extended
14998 to fill the target field.
15000 Fixed a problem where a Field starting bit offset (within the
15001 parent operation region) was calculated incorrectly if the
15003 alignment of the field differed from the access width. This
15004 affected CreateWordField, CreateDwordField, CreateQwordField, and
15005 possibly other fields that use the "AccessAny" keyword.
15007 Fixed a problem introduced in the 11_02_01 release where indirect
15008 stores through method arguments did not operate correctly.
15012 Implemented boot-time ACPI table parsing support
15013 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15014 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15015 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15016 processors, memory, and interrupts during setup_arch(). Note that
15017 this patch does not include the required architecture-specific
15018 changes required to apply this information -- subsequent patches
15019 will be posted for both IA32 and IA64 to achieve this.
15021 Added low-level sleep support for IA32 platforms, courtesy of Pat
15022 Mochel. This allows IA32 systems to transition to/from various
15023 sleeping states (e.g. S1, S3), although the lack of a centralized
15024 driver model and power-manageable drivers will prevent its
15025 (successful) use on most systems.
15027 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15028 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15029 tables" option, etc.
15031 Increased the default timeout for the EC driver from 1ms to 10ms
15032 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15035 ----------------------------------------
15036 Summary of changes for this label: 11_02_01
15038 1) ACPI CA Core Subsystem:
15040 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15041 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15044 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15045 changes to support ACPI 2.0 Qword field access. Read/Write
15046 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15047 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15048 the value parameter for the address space handler interface is now
15049 an ACPI_INTEGER. OSL implementations of these interfaces must now
15050 handle the case where the Width parameter is 64.
15052 Index Fields: Fixed a problem where unaligned bit assembly and
15053 disassembly for IndexFields was not supported correctly.
15055 Index and Bank Fields: Nested Index and Bank Fields are now
15056 supported. During field access, a check is performed to ensure
15057 that the value written to an Index or Bank register is not out of
15058 the range of the register. The Index (or Bank) register is
15059 written before each access to the field data. Future support will
15060 include allowing individual IndexFields to be wider than the
15061 DataRegister width.
15063 Fields: Fixed a problem where the AML interpreter was incorrectly
15064 attempting to write beyond the end of a Field/OpRegion. This was
15065 a boundary case that occurred when a DWORD field was written to a
15066 BYTE access OpRegion, forcing multiple writes and causing the
15067 interpreter to write one datum too many.
15069 Fields: Fixed a problem with Field/OpRegion access where the
15070 starting bit address of a field was incorrectly calculated if the
15071 current access type was wider than a byte (WordAcc, DwordAcc, or
15074 Fields: Fixed a problem where forward references to individual
15075 FieldUnits (individual Field names within a Field definition) were
15076 not resolved during the AML table load.
15078 Fields: Fixed a problem where forward references from a Field
15079 definition to the parent Operation Region definition were not
15080 resolved during the AML table load.
15082 Fields: Duplicate FieldUnit names within a scope are now detected
15083 during AML table load.
15085 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15086 returned an incorrect name for the root node.
15088 Code and Data Size: Code and Data optimizations have permitted new
15089 feature development with an actual reduction in the library size.
15090 Current core subsystem library sizes are shown below. These are
15091 the code and data sizes for the acpica.lib produced by the
15092 Microsoft Visual C++ 6.0 compiler, and these values do not include
15093 any ACPI driver or OSPM code. The debug version of the code
15094 includes the debug output trace mechanism and has a larger code
15095 and data size. Note that these values will vary depending on the
15096 efficiency of the compiler and the compiler options used during
15099 Previous Release (10_18_01):
15100 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15101 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15104 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15105 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15109 Improved /proc processor output (Pavel Machek) Re-added
15110 MODULE_LICENSE("GPL") to all modules.
15112 3) ASL Compiler version X2030:
15114 Duplicate FieldUnit names within a scope are now detected and
15119 Programmer Reference updated to reflect OSL and address space
15120 handler interface changes described above.
15122 ----------------------------------------
15123 Summary of changes for this label: 10_18_01
15125 ACPI CA Core Subsystem:
15127 Fixed a problem with the internal object reference count mechanism
15128 that occasionally caused premature object deletion. This resolves
15129 all of the outstanding problem reports where an object is deleted
15130 in the middle of an interpreter evaluation. Although this problem
15131 only showed up in rather obscure cases, the solution to the
15132 problem involved an adjustment of all reference counts involving
15133 objects attached to namespace nodes.
15135 Fixed a problem with Field support in the interpreter where
15136 writing to an aligned field whose length is an exact multiple (2
15137 or greater) of the field access granularity would cause an attempt
15138 to write beyond the end of the field.
15140 The top level AML opcode execution functions within the
15141 interpreter have been renamed with a more meaningful and
15142 consistent naming convention. The modules exmonad.c and
15143 exdyadic.c were eliminated. New modules are exoparg1.c,
15144 exoparg2.c, exoparg3.c, and exoparg6.c.
15146 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
15148 Fixed a problem where the AML debugger was causing some internal
15149 objects to not be deleted during subsystem termination.
15151 Fixed a problem with the external AcpiEvaluateObject interface
15152 where the subsystem would fault if the named object to be
15153 evaluated refered to a constant such as Zero, Ones, etc.
15155 Fixed a problem with IndexFields and BankFields where the
15156 subsystem would fault if the index, data, or bank registers were
15157 not defined in the same scope as the field itself.
15159 Added printf format string checking for compilers that support
15160 this feature. Corrected more than 50 instances of issues with
15161 format specifiers within invocations of ACPI_DEBUG_PRINT
15162 throughout the core subsystem code.
15164 The ASL "Revision" operator now returns the ACPI support level
15165 implemented in the core - the value "2" since the ACPI 2.0 support
15166 is more than 50% implemented.
15168 Enhanced the output of the AML debugger "dump namespace" command
15169 to output in a more human-readable form.
15171 Current core subsystem library code sizes are shown below. These
15173 are the code and data sizes for the acpica.lib produced by the
15174 Microsoft Visual C++ 6.0 compiler, and these values do not include
15175 any ACPI driver or OSPM code. The debug version of the code
15176 includes the full debug trace mechanism -- leading to a much
15178 larger code and data size. Note that these values will vary
15179 depending on the efficiency of the compiler and the compiler
15180 options used during generation.
15182 Previous Label (09_20_01):
15183 Non-Debug Version: 65K Code, 5K Data, 70K Total
15184 Debug Version: 138K Code, 58K Data, 196K Total
15188 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15189 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15193 Implemented a "Bad BIOS Blacklist" to track machines that have
15194 known ASL/AML problems.
15196 Enhanced the /proc interface for the thermal zone driver and added
15197 support for _HOT (the critical suspend trip point). The 'info'
15198 file now includes threshold/policy information, and allows setting
15199 of _SCP (cooling preference) and _TZP (polling frequency) values
15200 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
15201 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
15202 preference to the passive/quiet mode (if supported by the ASL).
15204 Implemented a workaround for a gcc bug that resuted in an OOPs
15205 when loading the control method battery driver.
15207 ----------------------------------------
15208 Summary of changes for this label: 09_20_01
15210 ACPI CA Core Subsystem:
15212 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
15213 modified to allow individual GPE levels to be flagged as wake-
15214 enabled (i.e., these GPEs are to remain enabled when the platform
15217 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
15218 support wake-enabled GPEs. This means that upon entering the
15219 sleep state, all GPEs that are not wake-enabled are disabled.
15220 When leaving the sleep state, these GPEs are reenabled.
15222 A local double-precision divide/modulo module has been added to
15223 enhance portability to OS kernels where a 64-bit math library is
15224 not available. The new module is "utmath.c".
15226 Several optimizations have been made to reduce the use of CPU
15227 stack. Originally over 2K, the maximum stack usage is now below
15228 2K at 1860 bytes (1.82k)
15230 Fixed a problem with the AcpiGetFirmwareTable interface where the
15231 root table pointer was not mapped into a logical address properly.
15233 Fixed a problem where a NULL pointer was being dereferenced in the
15234 interpreter code for the ASL Notify operator.
15236 Fixed a problem where the use of the ASL Revision operator
15237 returned an error. This operator now returns the current version
15238 of the ACPI CA core subsystem.
15240 Fixed a problem where objects passed as control method parameters
15241 to AcpiEvaluateObject were always deleted at method termination.
15242 However, these objects may end up being stored into the namespace
15243 by the called method. The object reference count mechanism was
15244 applied to these objects instead of a force delete.
15246 Fixed a problem where static strings or buffers (contained in the
15247 AML code) that are declared as package elements within the ASL
15248 code could cause a fault because the interpreter would attempt to
15249 delete them. These objects are now marked with the "static
15250 object" flag to prevent any attempt to delete them.
15252 Implemented an interpreter optimization to use operands directly
15253 from the state object instead of extracting the operands to local
15254 variables. This reduces stack use and code size, and improves
15257 The module exxface.c was eliminated as it was an unnecessary extra
15260 Current core subsystem library code sizes are shown below. These
15261 are the code and data sizes for the acpica.lib produced by the
15262 Microsoft Visual C++ 6.0 compiler, and these values do not include
15263 any ACPI driver or OSPM code. The debug version of the code
15264 includes the full debug trace mechanism -- leading to a much
15265 larger code and data size. Note that these values will vary
15266 depending on the efficiency of the compiler and the compiler
15267 options used during generation.
15269 Non-Debug Version: 65K Code, 5K Data, 70K Total
15270 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
15271 Total (Previously 195K)
15275 Support for ACPI 2.0 64-bit integers has been added. All ACPI
15276 Integer objects are now 64 bits wide
15278 All Acpi data types and structures are now in lower case. Only
15279 Acpi macros are upper case for differentiation.
15283 Changes to the external interfaces as described above.
15285 ----------------------------------------
15286 Summary of changes for this label: 08_31_01
15288 ACPI CA Core Subsystem:
15290 A bug with interpreter implementation of the ASL Divide operator
15291 was found and fixed. The implicit function return value (not the
15292 explicit store operands) was returning the remainder instead of
15293 the quotient. This was a longstanding bug and it fixes several
15294 known outstanding issues on various platforms.
15296 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
15297 been further optimized for size. There are 700 invocations of the
15298 DEBUG_PRINT macro alone, so each optimization reduces the size of
15299 the debug version of the subsystem significantly.
15301 A stack trace mechanism has been implemented. The maximum stack
15302 usage is about 2K on 32-bit platforms. The debugger command "stat
15303 stack" will display the current maximum stack usage.
15305 All public symbols and global variables within the subsystem are
15306 now prefixed with the string "Acpi". This keeps all of the
15307 symbols grouped together in a kernel map, and avoids conflicts
15308 with other kernel subsystems.
15310 Most of the internal fixed lookup tables have been moved into the
15311 code segment via the const operator.
15313 Several enhancements have been made to the interpreter to both
15314 reduce the code size and improve performance.
15316 Current core subsystem library code sizes are shown below. These
15317 are the code and data sizes for the acpica.lib produced by the
15318 Microsoft Visual C++ 6.0 compiler, and these values do not include
15319 any ACPI driver or OSPM code. The debug version of the code
15320 includes the full debug trace mechanism which contains over 700
15321 invocations of the DEBUG_PRINT macro, 500 function entry macro
15322 invocations, and over 900 function exit macro invocations --
15323 leading to a much larger code and data size. Note that these
15324 values will vary depending on the efficiency of the compiler and
15325 the compiler options used during generation.
15327 Non-Debug Version: 64K Code, 5K Data, 69K Total
15328 Debug Version: 137K Code, 58K Data, 195K Total
15332 Implemented wbinvd() macro, pending a kernel-wide definition.
15334 Fixed /proc/acpi/event to handle poll() and short reads.
15336 ASL Compiler, version X2026:
15338 Fixed a problem introduced in the previous label where the AML
15340 code emitted for package objects produced packages with zero
15343 ----------------------------------------
15344 Summary of changes for this label: 08_16_01
15346 ACPI CA Core Subsystem:
15348 The following ACPI 2.0 ASL operators have been implemented in the
15349 AML interpreter (These are already supported by the Intel ASL
15350 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
15351 ToBuffer. Support for 64-bit AML constants is implemented in the
15352 AML parser, debugger, and disassembler.
15354 The internal memory tracking mechanism (leak detection code) has
15355 been upgraded to reduce the memory overhead (a separate tracking
15356 block is no longer allocated for each memory allocation), and now
15357 supports all of the internal object caches.
15359 The data structures and code for the internal object caches have
15360 been coelesced and optimized so that there is a single cache and
15361 memory list data structure and a single group of functions that
15362 implement generic cache management. This has reduced the code
15363 size in both the debug and release versions of the subsystem.
15365 The DEBUG_PRINT macro(s) have been optimized for size and replaced
15366 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
15367 different, because it generates a single call to an internal
15368 function. This results in a savings of about 90 bytes per
15369 invocation, resulting in an overall code and data savings of about
15370 16% in the debug version of the subsystem.
15374 Fixed C3 disk corruption problems and re-enabled C3 on supporting
15377 Integrated low-level sleep code by Patrick Mochel.
15379 Further tweaked source code Linuxization.
15385 Support for ACPI 2.0 variable length packages is fixed/completed.
15387 Fixed a problem where the optional length parameter for the ACPI
15388 2.0 ToString operator.
15390 Fixed multiple extraneous error messages when a syntax error is
15391 detected within the declaration line of a control method.
15393 ----------------------------------------
15394 Summary of changes for this label: 07_17_01
15396 ACPI CA Core Subsystem:
15398 Added a new interface named AcpiGetFirmwareTable to obtain any
15399 ACPI table via the ACPI signature. The interface can be called at
15400 any time during kernel initialization, even before the kernel
15401 virtual memory manager is initialized and paging is enabled. This
15402 allows kernel subsystems to obtain ACPI tables very early, even
15403 before the ACPI CA subsystem is initialized.
15405 Fixed a problem where Fields defined with the AnyAcc attribute
15406 could be resolved to the incorrect address under the following
15407 conditions: 1) the field width is larger than 8 bits and 2) the
15408 parent operation region is not defined on a DWORD boundary.
15410 Fixed a problem where the interpreter is not being locked during
15411 namespace initialization (during execution of the _INI control
15412 methods), causing an error when an attempt is made to release it
15415 ACPI 2.0 support in the AML Interpreter has begun and will be
15416 ongoing throughout the rest of this year. In this label, The Mod
15417 operator is implemented.
15419 Added a new data type to contain full PCI addresses named
15420 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
15421 and Function values.
15425 Enhanced the Linux version of the source code to change most
15426 capitalized ACPI type names to lowercase. For example, all
15427 instances of ACPI_STATUS are changed to acpi_status. This will
15428 result in a large diff, but the change is strictly cosmetic and
15429 aligns the CA code closer to the Linux coding standard.
15433 The interfaces to the PCI configuration space have been changed to
15434 add the PCI Segment number and to split the single 32-bit combined
15435 DeviceFunction field into two 16-bit fields. This was
15436 accomplished by moving the four values that define an address in
15437 PCI configuration space (segment, bus, device, and function) to
15438 the new ACPI_PCI_ID structure.
15440 The changes to the PCI configuration space interfaces led to a
15441 reexamination of the complete set of address space access
15442 interfaces for PCI, I/O, and Memory. The previously existing 18
15443 interfaces have proven difficult to maintain (any small change
15444 must be propagated across at least 6 interfaces) and do not easily
15445 allow for future expansion to 64 bits if necessary. Also, on some
15446 systems, it would not be appropriate to demultiplex the access
15447 width (8, 16, 32,or 64) before calling the OSL if the
15448 corresponding native OS interfaces contain a similar access width
15449 parameter. For these reasons, the 18 address space interfaces
15450 have been replaced by these 6 new ones:
15452 AcpiOsReadPciConfiguration
15453 AcpiOsWritePciConfiguration
15459 Added a new interface named AcpiOsGetRootPointer to allow the OSL
15460 to perform the platform and/or OS-specific actions necessary to
15461 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
15462 interface will simply call down to the CA core to perform the low-
15463 memory search for the table. On IA-64, the RSDP is obtained from
15464 EFI. Migrating this interface to the OSL allows the CA core to
15466 remain OS and platform independent.
15468 Added a new interface named AcpiOsSignal to provide a generic
15469 "function code and pointer" interface for various miscellaneous
15470 signals and notifications that must be made to the host OS. The
15471 first such signals are intended to support the ASL Fatal and
15472 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
15473 interface has been obsoleted.
15475 The definition of the AcpiFormatException interface has been
15476 changed to simplify its use. The caller no longer must supply a
15477 buffer to the call; A pointer to a const string is now returned
15478 directly. This allows the call to be easily used in printf
15479 statements, etc. since the caller does not have to manage a local
15483 ASL Compiler, Version X2025:
15485 The ACPI 2.0 Switch/Case/Default operators have been implemented
15486 and are fully functional. They will work with all ACPI 1.0
15487 interpreters, since the operators are simply translated to If/Else
15490 The ACPI 2.0 ElseIf operator is implemented and will also work
15491 with 1.0 interpreters, for the same reason.
15493 Implemented support for ACPI 2.0 variable-length packages. These
15494 packages have a separate opcode, and their size is determined by
15495 the interpreter at run-time.
15497 Documentation The ACPI CA Programmer Reference has been updated to
15498 reflect the new interfaces and changes to existing interfaces.
15500 ------------------------------------------
15501 Summary of changes for this label: 06_15_01
15503 ACPI CA Core Subsystem:
15505 Fixed a problem where a DWORD-accessed field within a Buffer
15506 object would get its byte address inadvertently rounded down to
15507 the nearest DWORD. Buffers are always Byte-accessible.
15509 ASL Compiler, version X2024:
15511 Fixed a problem where the Switch() operator would either fault or
15512 hang the compiler. Note however, that the AML code for this ACPI
15513 2.0 operator is not yet implemented.
15515 Compiler uses the new AcpiOsGetTimer interface to obtain compile
15518 Implementation of the CreateField operator automatically converts
15519 a reference to a named field within a resource descriptor from a
15520 byte offset to a bit offset if required.
15522 Added some missing named fields from the resource descriptor
15523 support. These are the names that are automatically created by the
15524 compiler to reference fields within a descriptor. They are only
15525 valid at compile time and are not passed through to the AML
15528 Resource descriptor named fields are now typed as Integers and
15529 subject to compile-time typechecking when used in expressions.
15531 ------------------------------------------
15532 Summary of changes for this label: 05_18_01
15534 ACPI CA Core Subsystem:
15536 Fixed a couple of problems in the Field support code where bits
15537 from adjacent fields could be returned along with the proper field
15538 bits. Restructured the field support code to improve performance,
15539 readability and maintainability.
15541 New DEBUG_PRINTP macro automatically inserts the procedure name
15542 into the output, saving hundreds of copies of procedure name
15543 strings within the source, shrinking the memory footprint of the
15544 debug version of the core subsystem.
15546 Source Code Structure:
15548 The source code directory tree was restructured to reflect the
15549 current organization of the component architecture. Some files
15550 and directories have been moved and/or renamed.
15554 Fixed leaking kacpidpc processes.
15556 Fixed queueing event data even when /proc/acpi/event is not
15559 ASL Compiler, version X2020:
15561 Memory allocation performance enhancement - over 24X compile time
15562 improvement on large ASL files. Parse nodes and namestring
15563 buffers are now allocated from a large internal compiler buffer.
15565 The temporary .SRC file is deleted unless the "-s" option is
15568 The "-d" debug output option now sends all output to the .DBG file
15569 instead of the console.
15571 "External" second parameter is now optional
15573 "ElseIf" syntax now properly allows the predicate
15575 Last operand to "Load" now recognized as a Target operand
15577 Debug object can now be used anywhere as a normal object.
15579 ResourceTemplate now returns an object of type BUFFER
15581 EISAID now returns an object of type INTEGER
15583 "Index" now works with a STRING operand
15585 "LoadTable" now accepts optional parameters
15587 "ToString" length parameter is now optional
15589 "Interrupt (ResourceType," parse error fixed.
15591 "Register" with a user-defined region space parse error fixed
15593 Escaped backslash at the end of a string ("\\") scan/parse error
15596 "Revision" is now an object of type INTEGER.
15600 ------------------------------------------
15601 Summary of changes for this label: 05_02_01
15605 /proc/acpi/event now blocks properly.
15607 Removed /proc/sys/acpi. You can still dump your DSDT from
15610 ACPI CA Core Subsystem:
15612 Fixed a problem introduced in the previous label where some of the
15613 "small" resource descriptor types were not recognized.
15615 Improved error messages for the case where an ASL Field is outside
15616 the range of the parent operation region.
15618 ASL Compiler, version X2018:
15621 Added error detection for ASL Fields that extend beyond the length
15622 of the parent operation region (only if the length of the region
15623 is known at compile time.) This includes fields that have a
15624 minimum access width that is smaller than the parent region, and
15625 individual field units that are partially or entirely beyond the
15626 extent of the parent.
15630 ------------------------------------------
15631 Summary of changes for this label: 04_27_01
15633 ACPI CA Core Subsystem:
15635 Fixed a problem where the namespace mutex could be released at the
15636 wrong time during execution of AcpiRemoveAddressSpaceHandler.
15638 Added optional thread ID output for debug traces, to simplify
15639 debugging of multiple threads. Added context switch notification
15640 when the debug code realizes that a different thread is now
15641 executing ACPI code.
15643 Some additional external data types have been prefixed with the
15644 string "ACPI_" for consistency. This may effect existing code.
15645 The data types affected are the external callback typedefs - e.g.,
15647 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
15651 Fixed an issue with the OSL semaphore implementation where a
15652 thread was waking up with an error from receiving a SIGCHLD
15655 Linux version of ACPI CA now uses the system C library for string
15656 manipulation routines instead of a local implementation.
15658 Cleaned up comments and removed TBDs.
15660 ASL Compiler, version X2017:
15662 Enhanced error detection and reporting for all file I/O
15667 Programmer Reference updated to version 1.06.
15671 ------------------------------------------
15672 Summary of changes for this label: 04_13_01
15674 ACPI CA Core Subsystem:
15676 Restructured support for BufferFields and RegionFields.
15677 BankFields support is now fully operational. All known 32-bit
15678 limitations on field sizes have been removed. Both BufferFields
15679 and (Operation) RegionFields are now supported by the same field
15682 Resource support now supports QWORD address and IO resources. The
15683 16/32/64 bit address structures and the Extended IRQ structure
15684 have been changed to properly handle Source Resource strings.
15686 A ThreadId of -1 is now used to indicate a "mutex not acquired"
15687 condition internally and must never be returned by AcpiOsThreadId.
15688 This reserved value was changed from 0 since Unix systems allow a
15693 Driver code reorganized to enhance portability
15695 Added a kernel configuration option to control ACPI_DEBUG
15697 Fixed the EC driver to honor _GLK.
15699 ASL Compiler, version X2016:
15701 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
15702 address space was set to 0, not 0x7f as it should be.
15704 ------------------------------------------
15705 Summary of changes for this label: 03_13_01
15707 ACPI CA Core Subsystem:
15709 During ACPI initialization, the _SB_._INI method is now run if
15712 Notify handler fix - notifies are deferred until the parent method
15713 completes execution. This fixes the "mutex already acquired"
15714 issue seen occasionally.
15716 Part of the "implicit conversion" rules in ACPI 2.0 have been
15717 found to cause compatibility problems with existing ASL/AML. The
15718 convert "result-to-target-type" implementation has been removed
15719 for stores to method Args and Locals. Source operand conversion
15720 is still fully implemented. Possible changes to ACPI 2.0
15721 specification pending.
15723 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
15726 Fix for compiler warnings for 64-bit compiles.
15730 /proc output aligned for easier parsing.
15732 Release-version compile problem fixed.
15734 New kernel configuration options documented in Configure.help.
15736 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
15741 Power resource driver integrated with bus manager.
15743 Fixed kernel fault during active cooling for thermal zones.
15747 The source code tree has been restructured.
15751 ------------------------------------------
15752 Summary of changes for this label: 03_02_01
15754 Linux OS Services Layer (OSL):
15756 Major revision of all Linux-specific code.
15758 Modularized all ACPI-specific drivers.
15760 Added new thermal zone and power resource drivers.
15762 Revamped /proc interface (new functionality is under /proc/acpi).
15764 New kernel configuration options.
15766 Linux known issues:
15768 New kernel configuration options not documented in Configure.help
15772 Module dependencies not currently implemented. If used, they
15773 should be loaded in this order: busmgr, power, ec, system,
15774 processor, battery, ac_adapter, button, thermal.
15776 Modules will not load if CONFIG_MODVERSION is set.
15778 IBM 600E - entering S5 may reboot instead of shutting down.
15780 IBM 600E - Sleep button may generate "Invalid <NULL> context"
15783 Some systems may fail with "execution mutex already acquired"
15786 ACPI CA Core Subsystem:
15788 Added a new OSL Interface, AcpiOsGetThreadId. This was required
15789 for the deadlock detection code. Defined to return a non-zero, 32-
15790 bit thread ID for the currently executing thread. May be a non-
15791 zero constant integer on single-thread systems.
15793 Implemented deadlock detection for internal subsystem mutexes. We
15794 may add conditional compilation for this code (debug only) later.
15796 ASL/AML Mutex object semantics are now fully supported. This
15797 includes multiple acquires/releases by owner and support for the
15799 Mutex SyncLevel parameter.
15801 A new "Force Release" mechanism automatically frees all ASL
15802 Mutexes that have been acquired but not released when a thread
15803 exits the interpreter. This forces conformance to the ACPI spec
15804 ("All mutexes must be released when an invocation exits") and
15805 prevents deadlocked ASL threads. This mechanism can be expanded
15806 (later) to monitor other resource acquisitions if OEM ASL code
15807 continues to misbehave (which it will).
15809 Several new ACPI exception codes have been added for the Mutex
15812 Recursive method calls are now allowed and supported (the ACPI
15813 spec does in fact allow recursive method calls.) The number of
15814 recursive calls is subject to the restrictions imposed by the
15815 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
15818 Implemented support for the SyncLevel parameter for control
15819 methods (ACPI 2.0 feature)
15821 Fixed a deadlock problem when multiple threads attempted to use
15824 Fixed a problem where the string length of a String package
15825 element was not always set in a package returned from
15826 AcpiEvaluateObject.
15828 Fixed a problem where the length of a String package element was
15829 not always included in the length of the overall package returned
15830 from AcpiEvaluateObject.
15832 Added external interfaces (Acpi*) to the ACPI debug memory
15833 manager. This manager keeps a list of all outstanding
15834 allocations, and can therefore detect memory leaks and attempts to
15835 free memory blocks more than once. Useful for code such as the
15836 power manager, etc. May not be appropriate for device drivers.
15837 Performance with the debug code enabled is slow.
15839 The ACPI Global Lock is now an optional hardware element.
15841 ASL Compiler Version X2015:
15843 Integrated changes to allow the compiler to be generated on
15844 multiple platforms.
15846 Linux makefile added to generate the compiler on Linux
15850 All platform-specific headers have been moved to their own
15851 subdirectory, Include/Platform.
15853 New source file added, Interpreter/ammutex.c
15855 New header file, Include/acstruct.h
15859 The programmer reference has been updated for the following new
15860 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
15862 ------------------------------------------
15863 Summary of changes for this label: 02_08_01
15865 Core ACPI CA Subsystem: Fixed a problem where an error was
15866 incorrectly returned if the return resource buffer was larger than
15867 the actual data (in the resource interfaces).
15869 References to named objects within packages are resolved to the
15871 full pathname string before packages are returned directly (via
15872 the AcpiEvaluateObject interface) or indirectly via the resource
15875 Linux OS Services Layer (OSL):
15877 Improved /proc battery interface.
15880 Added C-state debugging output and other miscellaneous fixes.
15882 ASL Compiler Version X2014:
15884 All defined method arguments can now be used as local variables,
15885 including the ones that are not actually passed in as parameters.
15886 The compiler tracks initialization of the arguments and issues an
15887 exception if they are used without prior assignment (just like
15890 The -o option now specifies a filename prefix that is used for all
15891 output files, including the AML output file. Otherwise, the
15892 default behavior is as follows: 1) the AML goes to the file
15893 specified in the DSDT. 2) all other output files use the input
15894 source filename as the base.
15896 ------------------------------------------
15897 Summary of changes for this label: 01_25_01
15899 Core ACPI CA Subsystem: Restructured the implementation of object
15900 store support within the interpreter. This includes support for
15901 the Store operator as well as any ASL operators that include a
15904 Partially implemented support for Implicit Result-to-Target
15905 conversion. This is when a result object is converted on the fly
15906 to the type of an existing target object. Completion of this
15907 support is pending further analysis of the ACPI specification
15908 concerning this matter.
15910 CPU-specific code has been removed from the subsystem (hardware
15913 New Power Management Timer functions added
15915 Linux OS Services Layer (OSL): Moved system state transition code
15916 to the core, fixed it, and modified Linux OSL accordingly.
15918 Fixed C2 and C3 latency calculations.
15921 We no longer use the compilation date for the version message on
15922 initialization, but retrieve the version from AcpiGetSystemInfo().
15924 Incorporated for fix Sony VAIO machines.
15926 Documentation: The Programmer Reference has been updated and
15930 ASL Compiler: Version X2013: Fixed a problem where the line
15931 numbering and error reporting could get out of sync in the
15932 presence of multiple include files.
15934 ------------------------------------------
15935 Summary of changes for this label: 01_15_01
15937 Core ACPI CA Subsystem:
15939 Implemented support for type conversions in the execution of the
15940 ASL Concatenate operator (The second operand is converted to
15941 match the type of the first operand before concatenation.)
15943 Support for implicit source operand conversion is partially
15944 implemented. The ASL source operand types Integer, Buffer, and
15945 String are freely interchangeable for most ASL operators and are
15946 converted by the interpreter on the fly as required. Implicit
15947 Target operand conversion (where the result is converted to the
15948 target type before storing) is not yet implemented.
15950 Support for 32-bit and 64-bit BCD integers is implemented.
15952 Problem fixed where a field read on an aligned field could cause a
15953 read past the end of the field.
15955 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
15956 does not return a value, but the caller expects one. (The ASL
15957 compiler flags this as a warning.)
15962 1. Static typechecking of all operands is implemented. This
15963 prevents the use of invalid objects (such as using a Package where
15964 an Integer is required) at compile time instead of at interpreter
15966 2. The ASL source line is printed with ALL errors and warnings.
15967 3. Bug fix for source EOF without final linefeed.
15968 4. Debug option is split into a parse trace and a namespace trace.
15969 5. Namespace output option (-n) includes initial values for
15970 integers and strings.
15971 6. Parse-only option added for quick syntax checking.
15972 7. Compiler checks for duplicate ACPI name declarations
15975 1. Relaxed typechecking to allow interchangeability between
15976 strings, integers, and buffers. These types are now converted by
15977 the interpreter at runtime.
15978 2. Compiler reports time taken by each internal subsystem in the
15982 ------------------------------------------
15983 Summary of changes for this label: 12_14_00
15987 This is the first official release of the compiler. Since the
15988 compiler requires elements of the Core Subsystem, this label
15989 synchronizes everything.
15991 ------------------------------------------
15992 Summary of changes for this label: 12_08_00
15995 Fixed a problem where named references within the ASL definition
15996 of both OperationRegions and CreateXXXFields did not work
15997 properly. The symptom was an AE_AML_OPERAND_TYPE during
15998 initialization of the region/field. This is similar (but not
15999 related internally) to the problem that was fixed in the last
16002 Implemented both 32-bit and 64-bit support for the BCD ASL
16003 functions ToBCD and FromBCD.
16005 Updated all legal headers to include "2000" in the copyright
16008 ------------------------------------------
16009 Summary of changes for this label: 12_01_00
16011 Fixed a problem where method invocations within the ASL definition
16012 of both OperationRegions and CreateXXXFields did not work
16013 properly. The symptom was an AE_AML_OPERAND_TYPE during
16014 initialization of the region/field:
16016 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16017 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16020 Fixed a problem where operators with more than one nested
16021 subexpression would fail. The symptoms were varied, by mostly
16022 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16023 problem that has gone unnoticed until now.
16025 Subtract (Add (1,2), Multiply (3,4))
16027 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16028 previous build (The prefix part of a relative path was handled
16031 Fixed a problem where Operation Region initialization failed if
16032 the operation region name was a "namepath" instead of a simple
16033 "nameseg". Symptom was an AE_NO_OPERAND error.
16035 Fixed a problem where an assignment to a local variable via the
16036 indirect RefOf mechanism only worked for the first such
16037 assignment. Subsequent assignments were ignored.
16039 ------------------------------------------
16040 Summary of changes for this label: 11_15_00
16042 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16043 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16044 the AML interpreter does NOT have support for the new 2.0 ASL
16045 grammar terms at this time.
16047 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16050 All physical memory addresses across all platforms are now 64 bits
16051 wide. Logical address width remains dependent on the platform
16054 AcpiOsMapMemory interface changed to a 64-bit physical address.
16056 The AML interpreter integer size is now 64 bits, as per the ACPI
16059 For backwards compatibility with ACPI 1.0, ACPI tables with a
16060 revision number less than 2 use 32-bit integers only.
16062 Fixed a problem where the evaluation of OpRegion operands did not
16063 always resolve them to numbers properly.
16065 ------------------------------------------
16066 Summary of changes for this label: 10_20_00
16068 Fix for CBN_._STA issue. This fix will allow correct access to
16069 CBN_ OpRegions when the _STA returns 0x8.
16071 Support to convert ACPI constants (Ones, Zeros, One) to actual
16072 values before a package object is returned
16074 Fix for method call as predicate to if/while construct causing
16075 incorrect if/while behavior
16077 Fix for Else block package lengths sometimes calculated wrong (if
16080 Fix for Processor object length field, was always zero
16082 Table load abort if FACP sanity check fails
16084 Fix for problem with Scope(name) if name already exists
16086 Warning emitted if a named object referenced cannot be found
16087 (resolved) during method execution.
16093 ------------------------------------------
16094 Summary of changes for this label: 9_29_00
16096 New table initialization interfaces: AcpiInitializeSubsystem no
16097 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16098 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16099 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16102 Note: These interface changes require changes to all existing OSDs
16104 The PCI_Config default address space handler is always installed
16105 at the root namespace object.
16107 -------------------------------------------
16108 Summary of changes for this label: 09_15_00
16110 The new initialization architecture is implemented. New
16111 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16112 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16114 (Namespace is automatically loaded when a table is loaded)
16116 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16117 52 bytes to 32 bytes. There is usually one of these for every
16118 namespace object, so the memory savings is significant.
16120 Implemented just-in-time evaluation of the CreateField operators.
16122 Bug fixes for IA-64 support have been integrated.
16124 Additional code review comments have been implemented
16126 The so-called "third pass parse" has been replaced by a final walk
16127 through the namespace to initialize all operation regions (address
16128 spaces) and fields that have not yet been initialized during the
16129 execution of the various _INI and REG methods.
16131 New file - namespace/nsinit.c
16133 -------------------------------------------
16134 Summary of changes for this label: 09_01_00
16136 Namespace manager data structures have been reworked to change the
16137 primary object from a table to a single object. This has
16138 resulted in dynamic memory savings of 3X within the namespace and
16139 2X overall in the ACPI CA subsystem.
16141 Fixed problem where the call to AcpiEvFindPciRootBuses was
16142 inadvertently left commented out.
16144 Reduced the warning count when generating the source with the GCC
16147 Revision numbers added to each module header showing the
16148 SourceSafe version of the file. Please refer to this version
16149 number when giving us feedback or comments on individual modules.
16151 The main object types within the subsystem have been renamed to
16152 clarify their purpose:
16154 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
16155 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
16156 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
16158 NOTE: no changes to the initialization sequence are included in
16161 -------------------------------------------
16162 Summary of changes for this label: 08_23_00
16164 Fixed problem where TerminateControlMethod was being called
16165 multiple times per method
16167 Fixed debugger problem where single stepping caused a semaphore to
16170 Improved performance through additional parse object caching -
16171 added ACPI_EXTENDED_OP type
16173 -------------------------------------------
16174 Summary of changes for this label: 08_10_00
16176 Parser/Interpreter integration: Eliminated the creation of
16177 complete parse trees for ACPI tables and control methods.
16178 Instead, parse subtrees are created and then deleted as soon as
16179 they are processed (Either entered into the namespace or executed
16180 by the interpreter). This reduces the use of dynamic kernel
16181 memory significantly. (about 10X)
16183 Exception codes broken into classes and renumbered. Be sure to
16184 recompile all code that includes acexcep.h. Hopefully we won't
16185 have to renumber the codes again now that they are split into
16186 classes (environment, programmer, AML code, ACPI table, and
16189 Fixed some additional alignment issues in the Resource Manager
16192 Implemented semaphore tracking in the AcpiExec utility, and fixed
16193 several places where mutexes/semaphores were being unlocked
16194 without a corresponding lock operation. There are no known
16195 semaphore or mutex "leaks" at this time.
16197 Fixed the case where an ASL Return operator is used to return an
16200 -------------------------------------------
16201 Summary of changes for this label: 07_28_00
16203 Fixed a problem with the way addresses were calculated in
16204 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
16205 manifested itself when a Field was created with WordAccess or
16206 DwordAccess, but the field unit defined within the Field was less
16208 than a Word or Dword.
16210 Fixed a problem in AmlDumpOperands() module's loop to pull
16211 operands off of the operand stack to display information. The
16212 problem manifested itself as a TLB error on 64-bit systems when
16213 accessing an operand stack with two or more operands.
16215 Fixed a problem with the PCI configuration space handlers where
16216 context was getting confused between accesses. This required a
16217 change to the generic address space handler and address space
16218 setup definitions. Handlers now get both a global handler context
16219 (this is the one passed in by the user when executing
16220 AcpiInstallAddressSpaceHandler() and a specific region context
16221 that is unique to each region (For example, the _ADR, _SEG and
16222 _BBN values associated with a specific region). The generic
16223 function definitions have changed to the following:
16225 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
16226 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
16227 *HandlerContext, // This used to be void *Context void
16228 *RegionContext); // This is an additional parameter
16230 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
16231 RegionHandle, UINT32 Function, void *HandlerContext, void
16232 **RegionContext); // This used to be **ReturnContext
16234 -------------------------------------------
16235 Summary of changes for this label: 07_21_00
16237 Major file consolidation and rename. All files within the
16238 interpreter have been renamed as well as most header files. This
16239 was done to prevent collisions with existing files in the host
16240 OSs -- filenames such as "config.h" and "global.h" seem to be
16241 quite common. The VC project files have been updated. All
16242 makefiles will require modification.
16244 The parser/interpreter integration continues in Phase 5 with the
16245 implementation of a complete 2-pass parse (the AML is parsed
16246 twice) for each table; This avoids the construction of a huge
16247 parse tree and therefore reduces the amount of dynamic memory
16248 required by the subsystem. Greater use of the parse object cache
16249 means that performance is unaffected.
16251 Many comments from the two code reviews have been rolled in.
16253 The 64-bit alignment support is complete.
16255 -------------------------------------------
16256 Summary of changes for this label: 06_30_00
16258 With a nod and a tip of the hat to the technology of yesteryear,
16259 we've added support in the source code for 80 column output
16260 devices. The code is now mostly constrained to 80 columns or
16261 less to support environments and editors that 1) cannot display
16262 or print more than 80 characters on a single line, and 2) cannot
16263 disable line wrapping.
16265 A major restructuring of the namespace data structure has been
16266 completed. The result is 1) cleaner and more
16267 understandable/maintainable code, and 2) a significant reduction
16268 in the dynamic memory requirement for each named ACPI object
16271 -------------------------------------------
16272 Summary of changes for this label: 06_23_00
16274 Linux support has been added. In order to obtain approval to get
16275 the ACPI CA subsystem into the Linux kernel, we've had to make
16276 quite a few changes to the base subsystem that will affect all
16277 users (all the changes are generic and OS- independent). The
16278 effects of these global changes have been somewhat far reaching.
16279 Files have been merged and/or renamed and interfaces have been
16280 renamed. The major changes are described below.
16282 Osd* interfaces renamed to AcpiOs* to eliminate namespace
16283 pollution/confusion within our target kernels. All OSD
16284 interfaces must be modified to match the new naming convention.
16286 Files merged across the subsystem. A number of the smaller source
16287 and header files have been merged to reduce the file count and
16288 increase the density of the existing files. There are too many
16289 to list here. In general, makefiles that call out individual
16290 files will require rebuilding.
16292 Interpreter files renamed. All interpreter files now have the
16293 prefix am* instead of ie* and is*.
16295 Header files renamed: The acapi.h file is now acpixf.h. The
16296 acpiosd.h file is now acpiosxf.h. We are removing references to
16297 the acronym "API" since it is somewhat windowsy. The new name is
16298 "external interface" or xface or xf in the filenames.j
16301 All manifest constants have been forced to upper case (some were
16302 mixed case.) Also, the string "ACPI_" has been prepended to many
16303 (not all) of the constants, typedefs, and structs.
16305 The globals "DebugLevel" and "DebugLayer" have been renamed
16306 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
16308 All other globals within the subsystem are now prefixed with
16309 "AcpiGbl_" Internal procedures within the subsystem are now
16310 prefixed with "Acpi" (with only a few exceptions). The original
16311 two-letter abbreviation for the subcomponent remains after "Acpi"
16312 - for example, CmCallocate became AcpiCmCallocate.
16314 Added a source code translation/conversion utility. Used to
16315 generate the Linux source code, it can be modified to generate
16316 other types of source as well. Can also be used to cleanup
16317 existing source by removing extraneous spaces and blank lines.
16318 Found in tools/acpisrc/*
16320 OsdUnMapMemory was renamed to OsdUnmapMemory and then
16321 AcpiOsUnmapMemory. (UnMap became Unmap).
16323 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
16324 When set to one, this indicates that the caller wants to use the
16326 semaphore as a mutex, not a counting semaphore. ACPI CA uses
16327 both types. However, implementers of this call may want to use
16328 different OS primitives depending on the type of semaphore
16329 requested. For example, some operating systems provide separate
16331 "mutex" and "semaphore" interfaces - where the mutex interface is
16332 much faster because it doesn't have all the overhead of a full
16333 semaphore implementation.
16335 Fixed a deadlock problem where a method that accesses the PCI
16336 address space can block forever if it is the first access to the
16339 -------------------------------------------
16340 Summary of changes for this label: 06_02_00
16342 Support for environments that cannot handle unaligned data
16343 accesses (e.g. firmware and OS environments devoid of alignment
16344 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
16345 been added (via configurable macros) in these three areas: -
16346 Transfer of data from the raw AML byte stream is done via byte
16347 moves instead of word/dword/qword moves. - External objects are
16348 aligned within the user buffer, including package elements (sub-
16349 objects). - Conversion of name strings to UINT32 Acpi Names is now
16352 The Store operator was modified to mimic Microsoft's
16353 implementation when storing to a Buffer Field.
16355 Added a check of the BM_STS bit before entering C3.
16357 The methods subdirectory has been obsoleted and removed. A new
16358 file, cmeval.c subsumes the functionality.
16360 A 16-bit (DOS) version of AcpiExec has been developed. The
16361 makefile is under the acpiexec directory.