1 ----------------------------------------
2 31 October 2018. Summary of changes for version 20181031:
4 This release is available at https://acpica.org/downloads
7 An Operation Region regression was fixed by properly adding address
8 ranges to a global list during initialization. This allows OS to
9 accurately check for overlapping regions between native devices (such as
10 PCI) and Operation regions as well as checking for region conflicts
11 between two Operation Regions.
13 Added support for the 2-byte extended opcodes in the code/feature that
14 attempts to continue parsing during the table load phase. Skip parsing
15 Device declarations (and other extended opcodes) when an error occurs
16 during parsing. Previously, only single-byte opcodes were supported.
18 Cleanup: Simplified the module-level code support by eliminating a
19 useless global variable (AcpiGbl_GroupModuleLeveCode).
22 2) iASL Compiler/Disassembler and Tools:
24 iASL/Preprocessor: Fixed a regression where an incorrect use of ACPI_FREE
25 could cause a fault in the preprocessor. This was an inadvertent side-
26 effect from moving more allocations/frees to the local cache/memory
29 iASL: Enhanced error detection by validating that all NameSeg elements
30 within a NamePatch actually exist. The previous behavior was spotty at
31 best, and such errors could be improperly ignored at compiler time (never
32 at runtime, however. There are two new error messages, as shown in the
35 dsdt.asl 33: CreateByteField (TTTT.BXXX, 1, CBF1)
36 Error 6161 - ^ One or more objects within
37 the Pathname do not exist (TTTT.BXXX)
39 dsdt.asl 34: CreateByteField (BUF1, UUUU.INT1, BBBB.CBF1)
40 Error 6160 - One or more prefix Scopes do not exist ^
43 iASL: Disassembler/table-compiler: Added support for the static data
44 table TPM2 revision 3 (an older version of TPM2). The support has been
45 added for the compiler and the disassembler.
47 Fixed compilation of DOS format data table file on Unix/Linux systems.
48 iASL now properly detects line continuations (\) for DOS format data
49 table definition language files on when executing on Unix/Linux.
51 ----------------------------------------
52 03 October 2018. Summary of changes for version 20181003:
55 2) iASL Compiler/Disassembler and Tools:
57 Fixed a regression introduced in version 20180927 that could cause the
58 compiler to fault, especially with NamePaths containing one or more
59 carats (^). Such as: ^^_SB_PCI0
61 Added a new remark for the Sleep() operator when the sleep time operand
62 is larger than one second. This is a very long time for the ASL/BIOS code
63 and may not be what was intended by the ASL writer.
65 ----------------------------------------
66 27 September 2018. Summary of changes for version 20180927:
69 1) ACPICA kernel-resident subsystem:
71 Updated the GPE support to clear the status of all ACPI events when
72 entering any/all sleep states in order to avoid premature wakeups. In
73 theory, this may cause some wakeup events to be missed, but the
74 likelihood of this is small. This change restores the original behavior
75 of the ACPICA code in order to fix a regression seen from the previous
76 "Stop unconditionally clearing ACPI IRQs during suspend/resume" change.
77 This regression could cause some systems to incorrectly wake immediately.
79 Updated the execution of the _REG methods during initialization and
80 namespace loading to bring the behavior into closer conformance to the
81 ACPI specification and other ACPI implementations:
83 From the ACPI specification 6.2A, section 6.5.4 "_REG (Region):
84 "Control methods must assume all operation regions are inaccessible
85 until the _REG(RegionSpace, 1) method is executed"
87 "The exceptions to this rule are:
88 1. OSPM must guarantee that the following operation regions are always
90 SystemIO operation regions.
91 SystemMemory operation regions when accessing memory returned by the
92 System Address Map reporting interfaces."
94 Since the state of both the SystemIO and SystemMemory address spaces are
95 defined by the specification to never change, this ACPICA change ensures
96 that now _REG is never called on them. This solves some problems seen in
97 the field and provides compatibility with other ACPI implementations. An
98 update to the upcoming new version of the ACPI specification will help
99 clarify this behavior.
101 Updated the implementation of support for the Generic Serial Bus. For the
102 "bidirectional" protocols, the internal implementation now automatically
103 creates a return data buffer of the maximum size (255). This handles the
104 worst-case for data that is returned from the serial bus handler, and
105 fixes some problems seen in the field. This new buffer is directly
106 returned to the ASL. As such, there is no true "bidirectional" buffer,
107 which matches the ACPI specification. This is the reason for the "double
108 store" seen in the example ASL code in the specification, shown below:
110 Word Process Call (AttribProcessCall):
111 OperationRegion(TOP1, GenericSerialBus, 0x00, 0x100)
112 Field(TOP1, BufferAcc, NoLock, Preserve)
114 FLD1, 8, // Virtual register at command value 1.
117 Name(BUFF, Buffer(20){}) // Create GenericSerialBus data buffer
119 CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Word)
121 Store(0x5416, DATA) // Save 0x5416 into the data buffer
122 Store(Store(BUFF, FLD1), BUFF) // Invoke a write/read Process Call
124 // This is the "double store". The write to
125 // FLD1 returns a new buffer, which is stored
126 // back into BUFF with the second Store.
129 2) iASL Compiler/Disassembler and Tools:
131 iASL: Implemented detection of extraneous/redundant uses of the Offset()
132 operator within a Field Unit list. A remark is now issued for these. For
133 example, the first two of the Offset() operators below are extraneous.
134 Because both the compiler and the interpreter track the offsets
135 automatically, these Offsets simply refer to the current offset and are
136 unnecessary. Note, when optimization is enabled, the iASL compiler will
137 in fact remove the redundant Offset operators and will not emit any AML
140 OperationRegion (OPR1, SystemMemory, 0x100, 0x100)
143 Offset (0), // Never needed
145 Offset (4), // Redundant, offset is already 4 (bytes)
147 Offset (64), // OK use of Offset.
150 dsdt.asl 14: Offset (0),
151 Remark 2158 - ^ Unnecessary/redundant use of Offset
154 dsdt.asl 16: Offset (4),
155 Remark 2158 - ^ Unnecessary/redundant use of Offset
158 ----------------------------------------
159 10 August 2018. Summary of changes for version 20180810:
162 1) ACPICA kernel-resident subsystem:
164 Initial ACPI table loading: Attempt to continue loading ACPI tables
165 regardless of malformed AML. Since migrating table initialization to the
166 new module-level code support, the AML interpreter rejected tables upon
167 any ACPI error encountered during table load. This is a problem because
168 non-serious ACPI errors during table load do not necessarily mean that
169 the entire definition block (DSDT or SSDT) is invalid. This change
170 improves the table loading by ignoring some types of errors that can be
171 generated by incorrect AML. This can range from object type errors, scope
172 errors, and index errors.
174 Suspend/Resume support: Update to stop unconditionally clearing ACPI IRQs
175 during suspend/resume. The status of ACPI events is no longer cleared
176 when entering the ACPI S5 system state (power off) which caused some
177 systems to power up immediately after turning off power in certain
178 situations. This was a functional regression. It was fixed by clearing
179 the status of all ACPI events again when entering S5 (for system-wide
180 suspend or hibernation the clearing of the status of all events is not
181 desirable, as it might cause the kernel to miss wakeup events sometimes).
185 2) iASL Compiler/Disassembler and Tools:
187 AcpiExec: Enhanced the -fi option (Namespace initialization file). Field
188 elements listed in the initialization file were previously initialized
189 after the table load and before executing module-level code blocks.
190 Recent changes in the module-level code support means that the table load
191 becomes a large control method execution. If fields are used within
192 module-level code and we are executing with the -fi option, the
193 initialization values were used to initialize the namespace object(s)
194 only after the table was finished loading. This change Provides an early
195 initialization of objects specified in the initialization file so that
196 field unit values are populated during the table load (not after the
199 AcpiExec: Fixed a small memory leak regression that could result in
200 warnings during exit of the utility. These warnings were similar to
202 0002D690 Length 0x0006 nsnames-0502 [Not a Descriptor - too small]
203 0002CD70 Length 0x002C utcache-0453 [Operand] Integer RefCount 0x0001
205 ----------------------------------------
206 29 June 2018. Summary of changes for version 20180629:
209 1) iASL Compiler/Disassembler and Tools:
211 iASL: Fixed a regression related to the use of the ASL External
212 statement. Error checking for the use of the External() statement has
213 been relaxed. Previously, a restriction on the use of External meant that
214 the referenced named object was required to be defined in a different
215 table (an SSDT). Thus it would be an error to declare an object as an
216 external and then define the same named object in the same table. For
218 DefinitionBlock (...)
221 Device (DEV1){...} // This was an error
223 However, this behavior has caused regressions in some existing ASL code,
224 because there is code that depends on named objects and externals (with
225 the same name) being declared in the same table. This change will allow
226 the ASL code above to compile without errors or warnings.
228 iASL: Implemented ASL language extensions for four operators to make some
229 of their arguments optional instead of required:
230 1) Field (RegionName, AccessType, LockRule, UpdateRule)
231 2) BankField (RegionName, BankName, BankValue,
232 AccessType, LockRule, UpdateRule)
233 3) IndexField (IndexName, DataName,
234 AccessType, LockRule, UpdateRule)
235 For the Field operators above, the AccessType, LockRule, and UpdateRule
236 are now optional arguments. The default values are:
240 4) Mutex (MutexName, SyncLevel)
241 For this operator, the SyncLevel argument is now optional. This argument
242 is rarely used in any meaningful way by ASL code, and thus it makes sense
243 to make it optional. The default value is:
246 iASL: Attempted use of the ASL Unload() operator now results in the
248 "Unload is not supported by all operating systems"
249 This is in fact very true, and the Unload operator may be completely
250 deprecated in the near future.
252 AcpiExec: Fixed a regression for the -fi option (Namespace initialization
253 file. Recent changes in the ACPICA module-level code support altered the
254 table load/initialization sequence . This means that the table load has
255 become a large method execution of the table itself. If Operation Region
256 Fields are used within any module-level code and the -fi option was
257 specified, the initialization values were populated only after the table
258 had completely finished loading (and thus the module-level code had
259 already been executed). This change moves the initialization of objects
260 listed in the initialization file to before the table is executed as a
261 method. Field unit values are now initialized before the table execution
264 ----------------------------------------
265 31 May 2018. Summary of changes for version 20180531:
268 1) ACPICA kernel-resident Subsystem:
270 Implemented additional support to help ensure that a DSDT or SSDT is
271 fully loaded even if errors are incurred during the load. The majority of
272 the problems that are seen is the failure of individual AML operators
273 that occur during execution of any module-level code (MLC) existing in
274 the table. This support adds a mechanism to abort the current ASL
275 statement (AML opcode), emit an error message, and to simply move on to
276 the next opcode -- instead of aborting the entire table load. This is
277 different than the execution of a control method where the entire method
278 is aborted upon any error. The goal is to perform a very "best effort" to
279 load the ACPI tables. The most common MLC errors that have been seen in
280 the field are direct references to unresolved ASL/AML symbols (referenced
281 directly without the use of the CondRefOf operator to validate the
282 symbol). This new ACPICA behavior is now compatible with other ACPI
285 Interpreter: The Unload AML operator is no longer supported for the
286 reasons below. An AE_NOT_IMPLEMENTED exception is returned.
287 1) A correct implementation on at least some hosts may not be possible.
288 2) Other ACPI implementations do not correctly/fully support it.
289 3) It requires host device driver support which is not known to exist.
290 (To properly support namespace unload out from underneath.)
291 4) This AML operator has never been seen in the field.
293 Parser: Added a debug option to dump AML parse sub-trees as they are
294 being executed. Used with ACPI_DEBUG_PRINT, the enabling debug level is
297 Debugger: Reduced the verbosity for errors incurred during table load and
298 module-level code execution.
300 Completed an investigation into adding a namespace node "owner list"
301 instead of the current "owner ID" associated with namespace nodes. This
302 list would link together all nodes that are owned by an individual
303 control method. The purpose would be to enhance control method execution
304 by speeding up cleanup during method exit (all namespace nodes created by
305 a method are deleted upon method termination.) Currently, the entire
306 namespace must be searched for matching owner IDs if (and only if) the
307 method creates named objects outside of the local scope. However, by far
308 the most common case is that methods create objects locally, not outside
309 the method scope. There is already an ACPICA optimization in place that
310 only searches the entire namespace in the rare case of a method creating
311 objects elsewhere in the namespace. Therefore, it is felt that the
312 overhead of adding an additional pointer to each namespace node to
313 implement the owner list makes this feature unnecessary.
316 2) iASL Compiler/Disassembler and Tools:
318 iASL, Disassembler, and Template generator: Implemented support for
319 Revision D of the IORT table. Adds a new subtable that is used to specify
320 SMMUv3 PMCGs. rmurphy-arm.
322 Disassembler: Restored correct table header validation for the "special"
323 ACPI tables -- RSDP and FACS. These tables do not contain a standard ACPI
324 table header and must be special-cased. This was a regression that has
325 been present for apparently a long time.
327 AcpiExec: Reduced verbosity of the local exception handler implemented
328 within acpiexec. This handler is invoked by ACPICA upon any exceptions
329 generated during control method execution. A new option was added: -vh
330 restores the original verbosity level if desired.
332 AcpiExec: Changed the default base from decimal to hex for the -x option
333 (set debug level). This simplifies the use of this option and matches the
334 behavior of the corresponding iASL -x option.
336 AcpiExec: Restored a force-exit on multiple control-c (sigint)
337 interrupts. This allows program termination even if other issues cause
338 the control-c to fail.
340 ASL test suite (ASLTS): Added tests for the recently implemented package
341 element resolution mechanism that allows forward references to named
342 objects from individual package elements (this mechanism provides
343 compatibility with other ACPI implementations.)
346 ----------------------------------------
347 8 May 2018. Summary of changes for version 20180508:
350 1) ACPICA kernel-resident subsystem:
352 Completed the new (recently deployed) package resolution mechanism for
353 the Load and LoadTable ASL/AML operators. This fixes a regression that
354 was introduced in version 20180209 that could result in an
355 AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table
356 (SSDT) that contains package objects.
359 2) iASL Compiler/Disassembler and Tools:
361 AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than
362 1 MB. This change allows for table offsets within the acpidump file to be
363 up to 8 characters. These changes are backwards compatible with existing
367 ----------------------------------------
368 27 April 2018. Summary of changes for version 20180427:
371 1) ACPICA kernel-resident subsystem:
373 Debugger: Added support for Package objects in the "Test Objects"
374 command. This command walks the entire namespace and evaluates all named
375 data objects (Integers, Strings, Buffers, and now Packages).
377 Improved error messages for the namespace root node. Originally, the root
378 was referred to by the confusing string "\___". This has been replaced by
379 "Namespace Root" for clarification.
381 Fixed a potential infinite loop in the AcpiRsDumpByteList function. Colin
382 Ian King <colin.king@canonical.com>.
385 2) iASL Compiler/Disassembler and Tools:
387 iASL: Implemented support to detect and flag illegal forward references.
388 For compatibility with other ACPI implementations, these references are
389 now illegal at the root level of the DSDT or SSDTs. Forward references
390 have always been illegal within control methods. This change should not
391 affect existing ASL/AML code because of the fact that these references
392 have always been illegal in the other ACPI implementation.
394 iASL: Added error messages for the case where a table OEM ID and OEM
395 TABLE ID strings are longer than the ACPI-defined length. Previously,
396 these strings were simply silently truncated.
398 iASL: Enhanced the -tc option (which creates an AML hex file in C,
399 suitable for import into a firmware project):
400 1) Create a unique name for the table, to simplify use of multiple
402 2) Add a protection #ifdef in the file, similar to a .h header file.
403 With assistance from Sami Mujawar, sami.mujawar@arm.com and Evan Lloyd,
406 AcpiExec: Added a new option, -df, to disable the local fault handler.
407 This is useful during debugging, where it may be desired to drop into a
410 ----------------------------------------
411 13 March 2018. Summary of changes for version 20180313:
414 1) ACPICA kernel-resident subsystem:
416 Implemented various improvements to the GPE support:
418 1) Dispatch all active GPEs at initialization time so that no GPEs are
420 2) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled
421 before devices are enumerated.
422 3) Don't unconditionally clear ACPI IRQs during suspend/resume, so that
424 4) Add parallel GPE handling to eliminate the possibility of dispatching
426 5) Dispatch any pending GPEs after enabling for the first time.
428 AcpiGetObjectInfo - removed support for the _STA method. This was causing
429 problems on some platforms.
431 Added a new _OSI string, "Windows 2017.2".
433 Cleaned up and simplified the module-level code support. These changes
434 are in preparation for the eventual removal of the legacy MLC support
435 (deferred execution), replaced by the new MLC architecture which executes
436 the MLC as a table is loaded (DSDT/SSDTs).
438 Changed a compile-time option to a runtime option. Changes the option to
439 ignore ACPI table load-time package resolution errors into a runtime
440 option. Used only for platforms that generate many AE_NOT_FOUND errors
441 during boot. AcpiGbl_IgnorePackageResolutionErrors.
443 Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some
444 ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid
445 compilation errors from unused variables (seen with some compilers).
448 2) iASL Compiler/Disassembler and Tools:
450 ASLTS: parallelized execution in order to achieve an (approximately) 2X
451 performance increase.
453 ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves
456 ----------------------------------------
457 09 February 2018. Summary of changes for version 20180209:
460 1) ACPICA kernel-resident subsystem:
462 Completed the final integration of the recent changes to Package Object
463 handling and the module-level AML code support. This allows forward
464 references from individual package elements when the package object is
465 declared from within module-level code blocks. Provides compatibility
466 with other ACPI implementations.
468 The new architecture for the AML module-level code has been completed and
469 is now the default for the ACPICA code. This new architecture executes
470 the module-level code in-line as the ACPI table is loaded/parsed instead
471 of the previous architecture which deferred this code until after the
472 table was fully loaded. This solves some ASL code ordering issues and
473 provides compatibility with other ACPI implementations. At this time,
474 there is an option to fallback to the earlier architecture, but this
475 support is deprecated and is planned to be completely removed later this
478 Added a compile-time option to ignore AE_NOT_FOUND exceptions during
479 resolution of named reference elements within Package objects. Although
480 this is potentially a serious problem, it can generate a lot of
481 noise/errors on platforms whose firmware carries around a bunch of unused
482 Package objects. To disable these errors, define
483 ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All
484 errors are always reported for ACPICA applications such as AcpiExec.
486 Fixed a regression related to the explicit type-conversion AML operators
487 (ToXXXX). The regression was introduced early in 2017 but was not seen
488 until recently because these operators are not fully supported by other
489 ACPI implementations and are thus rarely used by firmware developers. The
490 operators are defined by the ACPI specification to not implement the
491 "implicit result object conversion". The regression incorrectly
492 introduced this object conversion for the following explicit conversion
503 2) iASL Compiler/Disassembler and Tools:
505 iASL: Fixed a problem with the compiler constant folding feature as
506 related to the ToXXXX explicit conversion operators. These operators do
507 not support the "implicit result object conversion" by definition. Thus,
508 ASL expressions that use these operators cannot be folded to a simple
509 Store operator because Store implements the implicit conversion. This
510 change uses the CopyObject operator for the ToXXXX operator folding
511 instead. CopyObject is defined to not implement implicit result
512 conversions and is thus appropriate for folding the ToXXXX operators.
514 iASL: Changed the severity of an error condition to a simple warning for
515 the case where a symbol is declared both locally and as an external
516 symbol. This accommodates existing ASL code.
518 AcpiExec: The -ep option to enable the new architecture for module-level
519 code has been removed. It is replaced by the -dp option which instead has
520 the opposite effect: it disables the new architecture (the default) and
521 enables the legacy architecture. When the legacy code is removed in the
522 future, the -dp option will be removed also.
524 ----------------------------------------
525 05 January 2018. Summary of changes for version 20180105:
528 1) ACPICA kernel-resident subsystem:
530 Updated all copyrights to 2018. This affects all source code modules.
532 Fixed a possible build error caused by an unresolved reference to the
533 AcpiUtSafeStrncpy function.
535 Removed NULL pointer arithmetic in the various pointer manipulation
536 macros. All "(void *) NULL" constructs are converted to "(void *) 0".
537 This eliminates warnings/errors in newer C compilers. Jung-uk Kim.
539 Added support for A32 ABI compilation, which uses the ILP32 model. Anuj
543 2) iASL Compiler/Disassembler and Tools:
545 ASLTS: Updated all copyrights to 2018.
547 Tools: Updated all signon copyrights to 2018.
549 AcpiXtract: Fixed a regression related to ACPI table signatures where the
550 signature was truncated to 3 characters (instead of 4).
552 AcpiExec: Restore the original terminal mode after the use of the -v and
555 ASLTS: Deployed the iASL __METHOD__ macro across the test suite.
557 ----------------------------------------
558 14 December 2017. Summary of changes for version 20171214:
561 1) ACPICA kernel-resident subsystem:
563 Fixed a regression in the external (public) AcpiEvaluateObjectTyped
564 interface where the optional "pathname" argument had inadvertently become
565 a required argument returning an error if omitted (NULL pointer
568 Fixed two possible memory leaks related to the recently developed "late
569 resolution" of reference objects within ASL Package Object definitions.
571 Added two recently defined _OSI strings: "Windows 2016" and "Windows
572 2017". Mario Limonciello.
574 Implemented and deployed a safer version of the C library function
575 strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the
576 creation of unterminated strings as a possible result of a standard
579 Cleaned up and restructured the global variable file (acglobal.h). There
580 are many changes, but no functional changes.
583 2) iASL Compiler/Disassembler and Tools:
585 iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the
586 optional OemData field at the end of the table was incorrectly required
587 for proper compilation. It is now correctly an optional field.
589 ASLTS: The entire suite was converted from standard ASL to the ASL+
590 language, using the ASL-to-ASL+ converter which is integrated into the
591 iASL compiler. A binary compare of all output files has verified the
592 correctness of the conversion.
594 iASL: Fixed the source code build for platforms where "char" is unsigned.
595 This affected the iASL lexer only. Jung-uk Kim.
597 ----------------------------------------
598 10 November 2017. Summary of changes for version 20171110:
601 1) ACPICA kernel-resident subsystem:
603 This release implements full support for ACPI 6.2A:
604 NFIT - Added a new subtable, "Platform Capabilities Structure"
605 No other changes to ACPICA were required, since ACPI 6.2A is primarily an
606 errata release of the specification.
608 Other ACPI table changes:
609 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo
610 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy
613 Utilities: Modified the string/integer conversion functions to use
614 internal 64-bit divide support instead of a native divide. On 32-bit
615 platforms, a 64-bit divide typically requires a library function which
616 may not be present in the build (kernel or otherwise).
618 Implemented a targeted error message for timeouts returned from the
619 Embedded Controller device driver. This is seen frequently enough to
620 special-case an AE_TIME returned from an EC operation region access:
621 "Timeout from EC hardware or EC device driver"
623 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all
624 runtime error messages have the identical prefix.
627 2) iASL Compiler/Disassembler and Tools:
629 AcpiXtract: Fixed a problem with table header detection within the
630 acpidump file. Processing a table could be ended early if a 0x40 (@)
631 appears in the original binary table, resulting in the @ symbol appearing
632 in the decoded ASCII field at the end of the acpidump text line. The
633 symbol caused acpixtract to incorrectly think it had reached the end of
634 the current table and the beginning of a new table.
636 AcpiXtract: Added an option (-f) to ignore some errors during table
637 extraction. This initial implementation ignores non-ASCII and non-
638 printable characters found in the acpidump text file.
640 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics
641 for ASLTS. This feature is used to track memory allocations from
642 different memory caches within the ACPICA code. At the end of an ASLTS
643 run, these memory statistics are recorded and stored in a log file.
645 Debugger (user-space version): Implemented a simple "Background" command.
646 Creates a new thread to execute a control method in the background, while
647 control returns to the debugger prompt to allow additional commands.
648 Syntax: Background <Namepath> [Arguments]
650 ----------------------------------------
651 29 September 2017. Summary of changes for version 20170929:
654 1) ACPICA kernel-resident subsystem:
656 Redesigned and implemented an improved ASL While() loop timeout
657 mechanism. This mechanism is used to prevent infinite loops in the kernel
658 AML interpreter caused by either non-responsive hardware or incorrect AML
659 code. The new implementation uses AcpiOsGetTimer instead of a simple
660 maximum loop count, and is thus more accurate and constant across
661 different machines. The default timeout is currently 30 seconds, but this
662 may be adjusted later.
664 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to
665 better reflect the new implementation of the loop timeout mechanism.
667 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support
668 and to fix an off-by-one error. Jung-uk Kim.
670 Fixed an EFI build problem by updating the makefiles to for a new file
671 that was added, utstrsuppt.c
674 2) iASL Compiler/Disassembler and Tools:
676 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This
677 includes support in the table disassembler, compiler, and template
680 iASL: Added an exception for an illegal type of recursive method
681 invocation. If a method creates named objects, the first recursive call
682 will fail at runtime. This change adds an error detection at compile time
683 to catch the problem up front. Note: Marking such a method as
684 "serialized" will not help with this problem, because the same thread can
685 acquire the method mutex more than once. Example compiler and runtime
695 Error 6152 - ^ Illegal recursive call to method
696 that creates named objects (MTH1)
698 Previous runtime exception:
699 ACPI Error: [INT1] Namespace lookup failure,
700 AE_ALREADY_EXISTS (20170831/dswload2-465)
702 iASL: Updated support for External() opcodes to improve namespace
703 management and error detection. These changes are related to issues seen
704 with multiple-segment namespace pathnames within External declarations,
707 External(\_SB.PCI0.GFX0, DeviceObj)
708 External(\_SB.PCI0.GFX0.ALSI)
710 iASL: Implemented support for multi-line error/warning messages. This
711 enables more detailed and helpful error messages as below, from the
712 initial deployment for the duplicate names error:
714 DSDT.iiii 1692: Device(PEG2) {
715 Error 6074 - ^ Name already exists in scope
718 Original name creation/declaration below:
719 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj)
721 AcpiXtract: Added additional flexibility to support differing input hex
722 dump formats. Specifically, hex dumps that contain partial disassembly
723 and/or comments within the ACPI table data definition. There exist some
724 dump utilities seen in the field that create this type of hex dump (such
725 as Simics). For example:
727 DSDT @ 0xdfffd0c0 (10999 bytes)
735 Creator_id 1280593481
736 Creator_revision 537399345
737 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00
739 2af0: 5f 4c 30 46 00 a4 01
741 Test suite: Miscellaneous changes/fixes:
742 More cleanup and simplification of makefiles
743 Continue compilation of test cases after a compile failure
744 Do not perform binary compare unless both files actually exist
746 iASL: Performed some code/module restructuring. Moved all memory
747 allocation functions to new modules. Two new files, aslallocate.c and
750 ----------------------------------------
751 31 August 2017. Summary of changes for version 20170831:
754 1) ACPICA kernel-resident subsystem:
756 Implemented internal support for full 64-bit addresses that appear in all
757 Generic Address Structure (GAS) structures. Previously, only the lower 32
758 bits were used. Affects the use of GAS structures in the FADT and other
759 tables, as well as the GAS structures passed to the AcpiRead and
760 AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
762 Added header support for the PDTT ACPI table (Processor Debug Trigger
763 Table). Full support in the iASL Data Table Compiler and disassembler is
767 2) iASL Compiler/Disassembler and Tools:
769 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
770 Properties Topology Table) where a flag bit was specified in the wrong
771 bit position ("Line Size Valid", bit 6).
773 iASL: Implemented support for Octal integer constants as defined by the
774 ASL language grammar, per the ACPI specification. Any integer constant
775 that starts with a zero is an octal constant. For example,
776 Store (037777, Local0) /* Octal constant */
777 Store (0x3FFF, Local0) /* Hex equivalent */
778 Store (16383, Local0) /* Decimal equivalent */
780 iASL: Improved overflow detection for 64-bit string conversions during
781 compilation of integer constants. "Overflow" in this case means a string
782 that represents an integer that is too large to fit into a 64-bit value.
783 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
784 the low-order 32 bits with a warning, as previously implemented. Several
785 new exceptions are defined that indicate a 64-bit overflow, as well as
786 the base (radix) that was used during the attempted conversion. Examples:
787 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
788 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
789 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
791 iASL: Added a warning for the case where a ResourceTemplate is declared
792 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
793 this case, the resulting template is created with a single END_TAG
794 descriptor, which is essentially useless.
796 iASL: Expanded the -vw option (ignore specific warnings/remarks) to
797 include compilation error codes as well.
799 ----------------------------------------
800 28 July 2017. Summary of changes for version 20170728:
803 1) ACPICA kernel-resident subsystem:
805 Fixed a regression seen with small resource descriptors that could cause
806 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
808 AML interpreter: Implemented a new feature that allows forward references
809 from individual named references within package objects that are
810 contained within blocks of "module-level code". This provides
811 compatibility with other ACPI implementations and supports existing
812 firmware that depends on this feature. Example:
815 If (ABCD) /* An If() at module-level */
817 Name (PKG1, Package()
819 INT1 /* Forward reference to object INT1
825 AML Interpreter: Fixed a problem with the Alias() operator where aliases
826 to some ASL objects were not handled properly. Objects affected are:
827 Mutex, Event, and OperationRegion.
829 AML Debugger: Enhanced to properly handle AML Alias objects. These
830 objects have one level of indirection which was not fully supported by
833 Table Manager: Added support to detect and ignore duplicate SSDTs within
834 the XSDT/RSDT. This error in the XSDT has been seen in the field.
836 EFI and EDK2 support:
837 Enabled /WX flag for MSVC builds
838 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
839 Added local support for 64-bit multiply and shift operations
840 Added support to compile acpidump.efi on Windows
841 Added OSL function stubs for interfaces not used under EFI
843 Added additional support for the _DMA predefined name. _DMA returns a
844 buffer containing a resource template. This change add support within the
845 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
846 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
849 2) iASL Compiler/Disassembler and Tools:
851 iASL: Fixed a problem where the internal input line buffer(s) could
852 overflow if there are very long lines in the input ASL source code file.
853 Implemented buffer management that automatically increases the size of
854 the buffers as necessary.
856 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
857 errors. If the specified exception is not raised during compilation, the
858 compiler emits an error. This is intended to support the ASL test suite,
859 but may be useful in other contexts.
861 iASL: Implemented a new predefined macro, __METHOD__, which returns a
862 string containing the name of the current control method that is being
865 iASL: Implemented debugger and table compiler support for the SDEI ACPI
866 table (Software Delegated Exception Interface). James Morse
867 <james.morse@arm.com>
869 Unix/Linux makefiles: Added an option to disable compile optimizations.
870 The disable occurs when the NOOPT flag is set to TRUE.
871 theracermaster@gmail.com
873 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
874 when there are different tables for 32-bit versus 64-bit.
876 Enhanced error reporting for the ASL test suite (ASLTS) by removing
877 unnecessary/verbose text, and emit the actual line number where an error
878 has occurred. These changes are intended to improve the usefulness of the
881 ----------------------------------------
882 29 June 2017. Summary of changes for version 20170629:
885 1) ACPICA kernel-resident subsystem:
887 Tables: Implemented a deferred ACPI table verification. This is useful
888 for operating systems where the tables cannot be verified in the early
889 initialization stage due to early memory mapping limitations on some
890 architectures. Lv Zheng.
892 Tables: Removed the signature validation for dynamically loaded tables.
893 Provides compatibility with other ACPI implementations. Previously, only
894 SSDT tables were allowed, as per the ACPI specification. Now, any table
895 signature can be used via the Load() operator. Lv Zheng.
897 Tables: Fixed several mutex issues that could cause errors during table
898 acquisition. Lv Zheng.
900 Tables: Fixed a problem where an ACPI warning could be generated if a
901 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
903 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
904 AcpiPutTable interfaces. This applies to the "late stage" table loading
905 when the use of AcpiPutTable is no longer required (since the system
906 memory manager is fully running and available). Lv Zheng.
908 Fixed/Reverted a regression during processing of resource descriptors
909 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
910 exception in this case.
912 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
913 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
915 Interpreter: Fixed a possible fault if an Alias operator with an invalid
916 or duplicate target is encountered during Alias creation in
917 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
919 Added an option to use designated initializers for function pointers.
920 Kees Cook <keescook@google.com>
923 2) iASL Compiler/Disassembler and Tools:
925 iASL: Allow compilation of External declarations with target pathnames
926 that refer to existing named objects within the table. Erik Schmauss.
928 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
929 FieldUnit name also is declared via External in the same table. Erik
932 iASL: Allow existing scope names within pathnames used in External
933 statements. For example:
934 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
937 iASL: IORT ACPI table: Implemented changes required to decode the new
938 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
939 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
941 Disassembler: Don't abort disassembly on errors from External()
942 statements. Erik Schmauss.
944 Disassembler: fixed a possible fault when one of the Create*Field
945 operators references a Resource Template. ACPICA Bugzilla 1396.
947 iASL: In the source code, resolved some naming inconsistences across the
948 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
949 Adds a new file, aslparseop.c
951 ----------------------------------------
952 31 May 2017. Summary of changes for version 20170531:
957 The ACPI specification version 6.2 has been released and is available at
958 http://uefi.org/specifications
960 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
961 are summarized below.
963 New ACPI tables (Table Compiler/Disassembler/Templates):
964 HMAT (Heterogeneous Memory Attributes Table)
965 WSMT (Windows SMM Security Mitigation Table)
966 PPTT (Processor Properties Topology Table)
968 New subtables for existing ACPI tables:
969 HEST (New subtable, Arch-deferred machine check)
970 SRAT (New subtable, Arch-specific affinity structure)
971 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
973 Simple updates for existing ACPI tables:
974 BGRT (two new flag bits)
975 HEST (New bit defined for several subtables, GHES_ASSIST)
977 New Resource Descriptors and Resource macros (Compiler/Disassembler):
983 New type for hardware error notification (section 18.3.2.9)
985 New predefined names/methods (Compiler/Interpreter):
986 _HMA (Heterogeneous Memory Attributes)
987 _LSI (Label Storage Information)
988 _LSR (Label Storage Read)
989 _LSW (Label Storage Write)
991 ASL grammar/macro changes (Compiler):
992 For() ASL macro, implemented with the AML while operator
993 Extensions to Concatenate operator
994 Support for multiple definition blocks in same ASL file
995 Clarification for Buffer operator
996 Allow executable AML code underneath all scopes (Devices, etc.)
997 Clarification/change for the _OSI return value
998 ASL grammar update for reference operators
999 Allow a zero-length string for AML filename in DefinitionBlock
1002 New device object notification value
1003 Remove a notify value (0x0C) for graceful shutdown
1004 New UUIDs for processor/cache properties and
1005 physical package property
1006 New _HID, ACPI0014 (Wireless Power Calibration Device)
1009 1) ACPICA kernel-resident subsystem:
1011 Added support to disable ACPI events on hardware-reduced platforms.
1012 Eliminates error messages of the form "Could not enable fixed event". Lv
1015 Fixed a problem using Device/Thermal objects with the ObjectType and
1016 DerefOf ASL operators. This support had not been fully/properly
1019 Fixed a problem where if a Buffer object containing a resource template
1020 was longer than the actual resource template, an error was generated --
1021 even though the AML is legal. This case has been seen in the field.
1023 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
1024 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
1026 Added header file changes for the TPM2 ACPI table. Update to new version
1027 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
1029 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
1030 These interfaces are intended to be used only in conjunction with the
1031 predefined _DLM method (Device Lock Method). "This object appears in a
1032 device scope when AML access to the device must be synchronized with the
1035 Example Code and Data Size: These are the sizes for the OS-independent
1036 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1037 debug version of the code includes the debug output trace mechanism and
1038 has a much larger code and data size.
1041 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
1042 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
1044 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
1045 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
1048 2) iASL Compiler/Disassembler and Tools:
1050 iASL: Fixed a problem where an External() declaration could not refer to
1051 a Field Unit. Erik Schmauss.
1053 Disassembler: Improved support for the Switch/Case operators. This
1054 feature will disassemble AML code back to the original Switch operators
1055 when possible, instead of an If..Else sequence. David Box
1057 iASL and disassembler: Improved the handling of multiple extraneous
1058 parentheses for both ASL input and disassembled ASL output.
1060 Improved the behavior of the iASL compiler and disassembler to detect
1061 improper use of external declarations
1063 Disassembler: Now aborts immediately upon detection of an unknown AML
1064 opcode. The AML parser has no real way to recover from this, and can
1065 result in the creation of an ill-formed parse tree that causes errors
1066 later during the disassembly.
1068 All tools: Fixed a problem where the Unix application OSL did not handle
1069 control-c correctly. For example, a control-c could incorrectly wake the
1072 AcpiExec: Improved the Control-C handling and added a handler for
1073 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
1076 Reduced the verbosity of the generic unix makefiles. Previously, each
1077 compilation displayed the full set of compiler options. This has been
1078 eliminated as the options are easily inspected within the makefiles. Each
1079 compilation now results in a single line of output.
1081 ----------------------------------------
1082 03 March 2017. Summary of changes for version 20170303:
1085 0) ACPICA licensing:
1087 The licensing information at the start of each source code module has
1088 been updated. In addition to the Intel license, the dual GPLv2/BSD
1089 license has been added for completeness. Now, a single version of the
1090 source code should be suitable for all ACPICA customers. This is the
1091 major change for this release since it affects all source code modules.
1094 1) ACPICA kernel-resident subsystem:
1096 Fixed two issues with the common asltypes.h header that could cause
1097 problems in some environments: (Kim Jung-uk)
1098 Removed typedef for YY_BUFFER_STATE ?
1099 Fixes an error with earlier versions of Flex.
1100 Removed use of FILE typedef (which is only defined in stdio.h)
1103 2) iASL Compiler/Disassembler and Tools:
1105 Disassembler: fixed a regression introduced in 20170224. A fix for a
1106 memory leak related to resource descriptor tags (names) could fault when
1107 the disassembler was generated with 64-bit compilers.
1109 The ASLTS test suite has been updated to implement a new testing
1110 architecture. During generation of the suite from ASL source, both the
1111 ASL and ASL+ compilers are now validated, as well as the disassembler
1112 itself (Erik Schmauss). The architecture executes as follows:
1114 For every ASL source module:
1115 Compile (legacy ASL compilation)
1116 Disassemble the resulting AML to ASL+ source code
1117 Compile the new ASL+ module
1118 Perform a binary compare on the legacy AML and the new ASL+ AML
1119 The ASLTS suite then executes normally using the AML binaries.
1121 ----------------------------------------
1122 24 February 2017. Summary of changes for version 20170224:
1125 1) ACPICA kernel-resident subsystem:
1127 Interpreter: Fixed two issues with the control method return value auto-
1128 repair feature, where an attempt to double-delete an internal object
1129 could result in an ACPICA warning (for _CID repair and others). No fault
1130 occurs, however, because the attempted deletion (actually a release to an
1131 internal cache) is detected and ignored via object poisoning.
1133 Debugger: Fixed an AML interpreter mutex issue during the single stepping
1134 of control methods. If certain debugger commands are executed during
1135 stepping, a mutex aquire/release error could occur. Lv Zheng.
1137 Fixed some issues generating ACPICA with the Intel C compiler by
1138 restoring the original behavior and compiler-specific include file in
1141 Example Code and Data Size: These are the sizes for the OS-independent
1142 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1143 debug version of the code includes the debug output trace mechanism and
1144 has a much larger code and data size.
1147 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
1148 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
1150 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1151 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1154 2) iASL Compiler/Disassembler and Tools:
1156 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
1157 tool has been designed, implemented, and included in this release. The
1158 key feature of this utility is that the original comments within the
1159 input ASL file are preserved during the conversion process, and included
1160 within the converted ASL+ file -- thus creating a transparent conversion
1161 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
1163 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
1166 iASL/Disassembler: Improved the detection and correct disassembly of
1167 Switch/Case operators. This feature detects sequences of if/elseif/else
1168 operators that originated from ASL Switch/Case/Default operators and
1169 emits the original operators. David Box.
1171 iASL: Improved the IORT ACPI table support in the following areas. Lv
1173 Clear MappingOffset if the MappingCount is zero.
1174 Fix the disassembly of the SMMU GSU interrupt offset.
1175 Update the template file for the IORT table.
1177 Disassembler: Enhanced the detection and disassembly of resource
1178 template/descriptor within a Buffer object. An EndTag descriptor is now
1179 required to have a zero second byte, since all known ASL compilers emit
1180 this. This helps eliminate incorrect decisions when a buffer is
1181 disassembled (false positives on resource templates).
1183 ----------------------------------------
1184 19 January 2017. Summary of changes for version 20170119:
1187 1) General ACPICA software:
1189 Entire source code base: Added the 2017 copyright to all source code
1190 legal/licensing module headers and utility/tool signons. This includes
1191 the standard Linux dual-license header. This affects virtually every file
1192 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
1193 the ACPICA test suite.
1196 2) iASL Compiler/Disassembler and Tools:
1198 iASL: Removed/fixed an inadvertent remark when a method argument
1199 containing a reference is used as a target operand within the method (and
1200 never used as a simple argument), as in the example below. Jeffrey Hugo.
1202 dsdt.asl 1507: Store(0x1, Arg0)
1203 Remark 2146 - ^ Method Argument is never used (Arg0)
1205 All tools: Removed the bit width of the compiler that generated the tool
1206 from the common signon for all user space tools. This proved to be
1207 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
1208 from the generic makefiles (Thomas Petazzoni). Example below.
1211 ASL+ Optimizing Compiler version 20170119-32
1212 ASL+ Optimizing Compiler version 20170119-64
1215 ASL+ Optimizing Compiler version 20170119
1217 ----------------------------------------
1218 22 December 2016. Summary of changes for version 20161222:
1221 1) ACPICA kernel-resident subsystem:
1223 AML Debugger: Implemented a new mechanism to simplify and enhance
1224 debugger integration into all environments, including kernel debuggers
1225 and user-space utilities, as well as remote debug services. This
1226 mechanism essentially consists of new OSL interfaces to support debugger
1227 initialization/termination, as well as wait/notify interfaces to perform
1228 the debugger handshake with the host. Lv Zheng.
1231 AcpiOsInitializeDebugger (void)
1232 AcpiOsTerminateDebugger (void)
1233 AcpiOsWaitCommandReady (void)
1234 AcpiOsNotifyCommandComplete (void)
1236 New OS services layer:
1237 osgendbg.c -- Example implementation, and used for AcpiExec
1239 Update for Generic Address Space (GAS) support: Although the AccessWidth
1240 and/or BitOffset fields of the GAS are not often used, this change now
1241 fully supports these fields. This affects the internal support for FADT
1242 registers, registers in other ACPI data tables, and the AcpiRead and
1243 AcpiWrite public interfaces. Lv Zheng.
1245 Sleep support: In order to simplify integration of ACPI sleep for the
1246 various host operating systems, a new OSL interface has been introduced.
1247 AcpiOsEnterSleep allows the host to perform any required operations
1248 before the final write to the sleep control register(s) is performed by
1252 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
1254 Called from these internal interfaces:
1258 EFI support: Added a very small EFI/ACPICA example application. Provides
1259 a simple demo for EFI integration, as well as assisting with resolution
1260 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
1262 source/tools/efihello/efihello.c
1264 Local C library: Implemented several new functions to enhance ACPICA
1265 portability, for environments where these clib functions are not
1266 available (such as EFI). Lv Zheng:
1273 Fixed a regression where occasionally a valid resource descriptor was
1274 incorrectly detected as invalid at runtime, and a
1275 AE_AML_NO_RESOURCE_END_TAG was returned.
1277 Fixed a problem with the recently implemented support that enables
1278 control method invocations as Target operands to many ASL operators.
1279 Warnings of this form: "Needed type [Reference], found [Processor]" were
1280 seen at runtime for some method invocations.
1282 Example Code and Data Size: These are the sizes for the OS-independent
1283 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1284 debug version of the code includes the debug output trace mechanism and
1285 has a much larger code and data size.
1288 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
1289 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
1291 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
1292 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
1295 2) iASL Compiler/Disassembler and Tools:
1297 Disassembler: Enhanced output by adding the capability to detect and
1298 disassemble ASL Switch/Case statements back to the original ASL source
1299 code instead of if/else blocks. David Box.
1301 AcpiHelp: Split a large file into separate files based upon
1302 functionality/purpose. New files are:
1306 ----------------------------------------
1307 17 November 2016. Summary of changes for version 20161117:
1310 1) ACPICA kernel-resident subsystem:
1312 Table Manager: Fixed a regression introduced in 20160729, "FADT support
1313 cleanup". This was an attempt to remove all references in the source to
1314 the FADT version 2, which never was a legal version number. It was
1315 skipped because it was an early version of 64-bit support that was
1316 eventually abandoned for the current 64-bit support.
1318 Interpreter: Fixed a problem where runtime implicit conversion was
1319 incorrectly disabled for the ASL operators below. This brings the
1320 behavior into compliance with the ACPI specification:
1328 Table Manager: Added a new public interface, AcpiPutTable, used to
1329 release and free an ACPI table returned by AcpiGetTable and related
1330 interfaces. Lv Zheng.
1332 Example Code and Data Size: These are the sizes for the OS-independent
1333 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1334 debug version of the code includes the debug output trace mechanism and
1335 has a much larger code and data size.
1338 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
1339 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
1341 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
1342 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
1345 2) iASL Compiler/Disassembler and Tools:
1347 Disassembler: Fixed a regression for disassembly of Resource Template.
1348 Detection of templates in the AML stream missed some types of templates.
1350 iASL: Fixed a problem where an Access Size error was returned for the PCC
1351 address space when the AccessSize of the GAS register is greater than a
1354 iASL: Implemented several grammar changes for the operators below. These
1355 changes are slated for the next version of the ACPI specification:
1356 RefOf - Disallow method invocation as an operand
1357 CondRefOf - Disallow method invocation as an operand
1358 DerefOf - Disallow operands that use the result from operators
1360 do not return a reference (Changed TermArg to
1363 iASL: Control method invocations are now allowed for Target operands, as
1364 per the ACPI specification. Removed error for using a control method
1365 invocation as a Target operand.
1367 Disassembler: Improved detection of Resource Templates, Unicode, and
1368 Strings within Buffer objects. These subtypes do not contain a specific
1369 opcode to indicate the originating ASL code, and they must be detected by
1370 other means within the disassembler.
1372 iASL: Implemented an optimization improvement for 32-bit ACPI tables
1373 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
1374 only after 64-bit to 32-bit truncation. A truncation warning message is
1375 still emitted, however.
1377 AcpiXtract: Implemented handling for both types of line terminators (LF
1378 or CR/LF) so that it can accept AcpiDump output files from any system.
1381 AcpiBin: Added two new options for comparing AML files:
1382 -a: compare and display ALL mismatches
1383 -o: start compare at this offset into the second file
1385 ----------------------------------------
1386 30 September 2016. Summary of changes for version 20160930:
1389 1) ACPICA kernel-resident subsystem:
1391 Fixed a regression in the internal AcpiTbFindTable function where a non
1392 AE_OK exception could inadvertently be returned even if the function did
1393 not fail. This problem affects the following operators:
1397 Fixed a regression in the LoadTable operator where a load to any
1398 namespace location other than the root no longer worked properly.
1400 Increased the maximum loop count value that will result in the
1401 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
1402 prevent infinite loops within the AML interpreter and thus the host OS
1403 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
1406 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
1407 acpixf.h file. This allows hosts to easily configure the maximum loop
1410 Removed an illegal character in the strtoul64.c file. This character
1411 caused errors with some C compilers.
1413 Example Code and Data Size: These are the sizes for the OS-independent
1414 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1415 debug version of the code includes the debug output trace mechanism and
1416 has a much larger code and data size.
1419 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
1420 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
1422 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
1423 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1426 2) iASL Compiler/Disassembler and Tools:
1428 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
1429 the simpler ASL ElseIf keyword. During the conversion, a trailing If
1430 block could be lost and missing from the disassembled output.
1432 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
1433 the missing rule caused a parse error when using the Index operator as an
1434 operand to ObjectType. This construct now compiles properly. Example:
1435 ObjectType(PKG1[4]).
1437 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
1438 option). Previously, unresolved symbols could cause a protection fault.
1439 Such symbols are now marked as unresolved in the map file.
1441 iASL: Implemented support to allow control method invocations as an
1442 operand to the ASL DeRefOf operator. Example:
1443 DeRefOf(MTH1(Local0))
1445 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
1446 possible _PLD buffer now includes examination of both the normal buffer
1447 length (16 or 20) as well as the surrounding AML package length.
1449 Disassembler: Fixed a problem with the decoding of complex expressions
1450 within the Divide operator for ASL+. For the case where both the quotient
1451 and remainder targets are specified, the entire statement cannot be
1452 disassembled. Previously, the output incorrectly contained a mix of ASL-
1453 and ASL+ operators. This mixed statement causes a syntax error when
1455 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
1457 Divide (INT1 + 6, 128, RSLT, QUOT)
1459 iASL/Tools: Added support to process AML and non-AML ACPI tables
1460 consistently. For the disassembler and AcpiExec, allow all types of ACPI
1461 tables (AML and data tables). For the iASL -e option, allow only AML
1464 ----------------------------------------
1465 31 August 2016. Summary of changes for version 20160831:
1468 1) ACPICA kernel-resident subsystem:
1470 Improve support for the so-called "module-level code", which is defined
1471 to be math, logical and control AML opcodes that appear outside of any
1472 control method. This change improves the support by adding more opcodes
1473 that can be executed in the manner. Some other issues have been solved,
1474 and the ASL grammar changes to support such code under all scope
1475 operators (Device, etc.) are complete. Lv Zheng.
1477 UEFI support: these OSL functions have been implemented. This is an
1478 additional step toward supporting the AcpiExec utility natively (with
1479 full hardware access) under UEFI. Marcelo Ferreira.
1480 AcpiOsReadPciConfiguration
1481 AcpiOsWritePciConfiguration
1483 Fixed a possible mutex error during control method auto-serialization. Lv
1486 Updated support for the Generic Address Structure by fully implementing
1487 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
1490 Updated the return value for the internal _OSI method. Instead of
1491 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
1492 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
1493 implementations, and will be reflected and clarified in the next version
1494 of the ACPI specification.
1496 Implemented two new table events that can be passed to an ACPICA table
1497 handler. These events are used to indicate a table installation or
1498 uninstallation. These events are used in addition to existed table load
1499 and unload events. Lv Zheng.
1501 Implemented a cleanup for all internal string-to-integer conversions.
1502 Consolidate multiple versions of this functionality and limit possible
1503 bases to either 10 or 16 to simplify the code. Adds a new file,
1506 Cleanup the inclusion order of the various compiler-specific headers.
1507 This simplifies build configuration management. The compiler-specific
1508 headers are now split out from the host-specific headers. Lv Zheng.
1510 Example Code and Data Size: These are the sizes for the OS-independent
1511 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1512 debug version of the code includes the debug output trace mechanism and
1513 has a much larger code and data size.
1516 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
1517 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1520 2) iASL Compiler/Disassembler and Tools:
1522 iASL/AcpiExec: Added a command line option to display the build date/time
1523 of the tool (-vd). This can be useful to verify that the correct version
1524 of the tools are being used.
1526 AML Debugger: Implemented a new subcommand ("execute predef") to execute
1527 all predefined control methods and names within the current namespace.
1528 This can be useful for debugging problems with ACPI tables and the ACPI
1531 ----------------------------------------
1532 29 July 2016. Summary of changes for version 20160729:
1535 1) ACPICA kernel-resident subsystem:
1537 Implemented basic UEFI support for the various ACPICA tools. This
1539 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
1540 2) Support to obtain the ACPI tables on UEFI.
1541 3) Local implementation of required C library functions not available on
1543 4) A front-end (main) function for the tools for UEFI-related
1546 The initial deployment of this support is the AcpiDump utility executing
1547 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
1548 Current environments supported are Linux/Unix. MSVC generation is not
1549 supported at this time. See the generate/efi/README file for build
1550 instructions. Lv Zheng.
1552 Future plans include porting the AcpiExec utility to execute natively on
1553 the platform with I/O and memory access. This will allow viewing/dump of
1554 the platform namespace and native execution of ACPI control methods that
1555 access the actual hardware. To fully implement this support, the OSL
1556 functions below must be implemented with UEFI interfaces. Any community
1557 help in the implementation of these functions would be appreciated:
1562 AcpiOsReadPciConfiguration
1563 AcpiOsWritePciConfiguration
1565 Restructured and standardized the C library configuration for ACPICA,
1566 resulting in the various configuration options below. This includes a
1567 global restructuring of the compiler-dependent and platform-dependent
1568 include files. These changes may affect the existing platform-dependent
1569 configuration files on some hosts. Lv Zheng.
1571 The current C library configuration options appear below. For any issues,
1572 it may be helpful to examine the existing compiler-dependent and
1573 platform-dependent files as examples. Lv Zheng.
1576 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1578 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1579 2) Unix/Windows/BSD applications:
1580 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
1582 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1583 3) UEFI applications:
1584 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1586 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
1587 4) UEFI applications (EDK2/StdLib):
1588 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
1589 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
1592 AML interpreter: "module-level code" support. Allows for execution of so-
1593 called "executable" AML code (math/logical operations, etc.) outside of
1594 control methods not just at the module level (top level) but also within
1595 any scope declared outside of a control method - Scope{}, Device{},
1596 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
1598 Simplified the configuration of the "maximum AML loops" global option by
1599 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
1600 modified at runtime.
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: 139.1K Code, 22.9K Data, 162.0K Total
1610 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
1613 2) iASL Compiler/Disassembler and Tools:
1615 iASL: Add full support for the RASF ACPI table (RAS Features Table).
1616 Includes disassembler, data table compiler, and header support.
1618 iASL Expand "module-level code" support. Allows for
1619 compilation/disassembly of so-called "executable" AML code (math/logical
1620 operations, etc.) outside of control methods not just at the module level
1621 (top level) but also within any scope declared outside of a control
1622 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
1625 AcpiDump: Added support for dumping all SSDTs on newer versions of
1626 Windows. These tables are now easily available -- SSDTs are not available
1627 through the registry on older versions.
1629 ----------------------------------------
1630 27 May 2016. Summary of changes for version 20160527:
1633 1) ACPICA kernel-resident subsystem:
1635 Temporarily reverted the new arbitrary bit length/alignment support in
1636 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
1637 a number of regressions with the new code that need to be fully resolved
1638 and tested before this support can be finally integrated into ACPICA.
1639 Apologies for any inconveniences these issues may have caused.
1641 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
1642 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
1643 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
1645 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
1646 option. Adds a new return macro, return_STR. Junk-uk Kim.
1648 Example Code and Data Size: These are the sizes for the OS-independent
1649 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1650 debug version of the code includes the debug output trace mechanism and
1651 has a much larger code and data size.
1654 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
1655 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1657 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1658 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
1660 ----------------------------------------
1661 22 April 2016. Summary of changes for version 20160422:
1663 1) ACPICA kernel-resident subsystem:
1665 Fixed a regression in the GAS (generic address structure) arbitrary bit
1666 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
1667 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
1669 ACPI 6.0: Added support for new/renamed resource macros. One new argument
1670 was added to each of these macros, and the original name has been
1671 deprecated. The AML disassembler will always disassemble to the new
1672 names. Support for the new macros was added to iASL, disassembler,
1673 resource manager, and the acpihelp utility. ACPICA BZ 1274.
1675 I2cSerialBus -> I2cSerialBusV2
1676 SpiSerialBus -> SpiSerialBusV2
1677 UartSerialBus -> UartSerialBusV2
1679 ACPI 6.0: Added support for a new integer field that was appended to the
1680 package object returned by the _BIX method. This adds iASL compile-time
1681 and AML runtime error checking. ACPICA BZ 1273.
1683 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
1684 Subspace Type2" (Headers, Disassembler, and data table compiler).
1686 Example Code and Data Size: These are the sizes for the OS-independent
1687 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1688 debug version of the code includes the debug output trace mechanism and
1689 has a much larger code and data size.
1692 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1693 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1695 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1696 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1699 2) iASL Compiler/Disassembler and Tools:
1701 iASL: Implemented an ASL grammar extension to allow/enable executable
1702 "module-level code" to be created and executed under the various
1703 operators that create new scopes. This type of AML code is already
1704 supported in all known AML interpreters, and the grammar change will
1705 appear in the next version of the ACPI specification. Simplifies the
1706 conditional runtime creation of named objects under these object types:
1714 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
1715 ease-of-use to the ASL language. The syntax is similar to the
1716 corresponding C operator, and is implemented with the existing AML While
1717 opcode -- thus requiring no changes to existing AML interpreters.
1719 For (Initialize, Predicate, Update) {TermList}
1724 Initializer // Nothing | TermArg => ComputationalData
1725 Predicate // Nothing | TermArg => ComputationalData
1726 Update // Nothing | TermArg => ComputationalData
1730 iASL: The _HID/_ADR detection and validation has been enhanced to search
1731 under conditionals in order to allow these objects to be conditionally
1734 iASL: Fixed several issues with the constant folding feature. The
1735 improvement allows better detection and resolution of statements that can
1736 be folded at compile time. ACPICA BZ 1266.
1738 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
1739 conversion to the ASL ElseIf operator where incorrect ASL code could be
1742 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
1743 sometimes an extra (and extraneous) set of parentheses were emitted for
1744 some combinations of operators. Although this did not cause any problems
1745 with recompilation of the disassembled code, it made the code more
1746 difficult to read. David Box. ACPICA BZ 1231.
1748 iASL: Changed to ignore the unreferenced detection for predefined names
1749 of resource descriptor elements, when the resource descriptor is
1750 created/defined within a control method.
1752 iASL: Disassembler: Fix a possible fault with externally declared Buffer
1755 ----------------------------------------
1756 18 March 2016. Summary of changes for version 20160318:
1758 1) ACPICA kernel-resident subsystem:
1760 Added support for arbitrary bit lengths and bit offsets for registers
1761 defined by the Generic Address Structure. Previously, only aligned bit
1762 lengths of 8/16/32/64 were supported. This was sufficient for many years,
1763 but recently some machines have been seen that require arbitrary bit-
1764 level support. ACPICA BZ 1240. Lv Zheng.
1766 Fixed an issue where the \_SB._INI method sometimes must be evaluated
1767 before any _REG methods are evaluated. Lv Zheng.
1769 Implemented several changes related to ACPI table support
1770 (Headers/Disassembler/TableCompiler):
1771 NFIT: For ACPI 6.1, updated to add some additional new fields and
1773 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
1775 DMAR: Added new constants per the 10/2014 DMAR spec.
1776 IORT: Added new subtable per the 10/2015 IORT spec.
1777 HEST: For ACPI 6.1, added new constants and new subtable.
1778 DBG2: Added new constants per the 12/2015 DBG2 spec.
1779 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
1781 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
1783 Updated header support for the DMAR table to match the current version of
1786 Added extensions to the ASL Concatenate operator to allow any ACPI object
1787 to be passed as an operand. Any object other than Integer/String/Buffer
1788 simply returns a string containing the object type. This extends the
1789 usefulness of the Printf macros. Previously, Concatenate would abort the
1790 control method if a non-data object was encountered.
1792 ACPICA source code: Deployed the C "const" keyword across the source code
1793 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
1795 Example Code and Data Size: These are the sizes for the OS-independent
1796 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1797 debug version of the code includes the debug output trace mechanism and
1798 has a much larger code and data size.
1801 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1802 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1804 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1805 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1808 2) iASL Compiler/Disassembler and Tools:
1810 iASL/Disassembler: Improved the heuristic used to determine the number of
1811 arguments for an externally defined control method (a method in another
1812 table). Although this is an improvement, there is no deterministic way to
1813 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1814 will completely solve this problem as it is deployed (automatically) in
1817 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1818 statements that could cause errors when the disassembled file is
1819 compiled. ACPICA BZ 1243. David Box.
1821 iASL: Fixed a regression caused by the merger of the two versions of the
1822 local strtoul64. Because of a dependency on a global variable, strtoul64
1823 could return an error for integers greater than a 32-bit value. ACPICA BZ
1826 iASL: Fixed a regression where a fault could occur for an ASL Return
1827 statement if it invokes a control method that is not resolved. ACPICA BZ
1830 AcpiXtract: Improved input file validation: detection of binary files and
1831 non-acpidump text files.
1833 ----------------------------------------
1834 12 February 2016. Summary of changes for version 20160212:
1836 1) ACPICA kernel-resident subsystem:
1838 Implemented full support for the ACPI 6.1 specification (released in
1839 January). This version of the specification is available at:
1840 http://www.uefi.org/specifications
1842 Only a relatively small number of changes were required in ACPICA to
1843 support ACPI 6.1, in these areas:
1844 - New predefined names
1846 - A new subtable for HEST
1847 - A few other header changes for new values
1849 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1850 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1852 Reverted a change made in version 20151218 which enabled method
1853 invocations to be targets of various ASL operators (SuperName and Target
1854 grammar elements). While the new behavior is supported by the ACPI
1855 specification, other AML interpreters do not support this behavior and
1856 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1857 this support. Therefore, the change was reverted to the original ACPICA
1860 ACPICA now supports the GCC 6 compiler.
1862 Current Release: (Note: build changes increased sizes)
1863 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1864 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1866 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1867 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1870 2) iASL Compiler/Disassembler and Tools:
1872 Completed full support for the ACPI 6.0 External() AML opcode. The
1873 compiler emits an external AML opcode for each ASL External statement.
1874 This opcode is used by the disassembler to assist with the disassembly of
1875 external control methods by specifying the required number of arguments
1876 for the method. AML interpreters do not use this opcode. To ensure that
1877 interpreters do not even see the opcode, a block of one or more external
1878 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1879 commonly deployed in BIOS code, the ability of disassemblers to correctly
1880 disassemble AML code will be greatly improved. David Box.
1882 iASL: Implemented support for an optional cross-reference output file.
1883 The -lx option will create a the cross-reference file with the suffix
1884 "xrf". Three different types of cross-reference are created in this file:
1885 - List of object references made from within each control method
1886 - Invocation (caller) list for each user-defined control method
1887 - List of references to each non-method object in the namespace
1889 iASL: Method invocations as ASL Target operands are now disallowed and
1890 flagged as errors in preparation for ACPI 6.2 (see the description of the
1893 ----------------------------------------
1894 8 January 2016. Summary of changes for version 20160108:
1896 1) ACPICA kernel-resident subsystem:
1898 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1899 copyright to all source code module headers and utility/tool signons.
1900 This includes the standard Linux dual-license header. This affects
1901 virtually every file in the ACPICA core subsystem, iASL compiler, all
1902 ACPICA utilities, and the ACPICA test suite.
1904 Fixed a regression introduced in version 20151218 concerning the
1905 execution of so-called module-level ASL/AML code. Namespace objects
1906 created under a module-level If() construct were not properly/fully
1907 entered into the namespace and could cause an interpreter fault when
1910 Example Code and Data Size: These are the sizes for the OS-independent
1911 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1912 debug version of the code includes the debug output trace mechanism and
1913 has a much larger code and data size.
1916 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1917 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1919 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1920 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1923 2) iASL Compiler/Disassembler and Tools:
1925 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1926 descriptors. The _PIN field name was incorrectly defined to be an array
1927 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1928 would cause incorrect bit width warnings when using Word (16-bit) fields
1929 to access the descriptors.
1932 ----------------------------------------
1933 18 December 2015. Summary of changes for version 20151218:
1935 1) ACPICA kernel-resident subsystem:
1937 Implemented per-AML-table execution of "module-level code" as individual
1938 ACPI tables are loaded into the namespace during ACPICA initialization.
1939 In other words, any module-level code within an AML table is executed
1940 immediately after the table is loaded, instead of batched and executed
1941 after all of the tables have been loaded. This provides compatibility
1942 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1945 To fully support the feature above, the default operation region handlers
1946 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1947 installed before any ACPI tables are loaded. This enables module-level
1948 code to access these address spaces during the table load and module-
1949 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1952 Implemented several changes to the internal _REG support in conjunction
1953 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1954 utilities for the changes above. Although these tools were changed, host
1955 operating systems that simply use the default handlers for SystemMemory,
1956 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1958 For example, in the code below, DEV1 is conditionally added to the
1959 namespace by the DSDT via module-level code that accesses an operation
1960 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1961 created immediately after the DSDT is loaded in order for the SSDT to
1962 successfully reference DEV1. Previously, this code would cause an
1963 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1964 fully supported by ACPICA.
1966 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1968 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1969 Field (OPR1, AnyAcc, NoLock, Preserve)
1980 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1982 External (\DEV1, DeviceObj)
1988 Fixed an AML interpreter problem where control method invocations were
1989 not handled correctly when the invocation was itself a SuperName argument
1990 to another ASL operator. In these cases, the method was not invoked.
1991 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1996 Decrement, Increment
1999 Signal, Release, Reset
2002 Implemented automatic String-to-ObjectReference conversion support for
2003 packages returned by predefined names (such as _DEP). A common BIOS error
2004 is to add double quotes around an ObjectReference namepath, which turns
2005 the reference into an unexpected string object. This support detects the
2006 problem and corrects it before the package is returned to the caller that
2007 invoked the method. Lv Zheng.
2009 Implemented extensions to the Concatenate operator. Concatenate now
2010 accepts any type of object, it is not restricted to simply
2011 Integer/String/Buffer. For objects other than these 3 basic data types,
2012 the argument is treated as a string containing the name of the object
2013 type. This expands the utility of Concatenate and the Printf/Fprintf
2014 macros. ACPICA BZ 1222.
2016 Cleaned up the output of the ASL Debug object. The timer() value is now
2017 optional and no longer emitted by default. Also, the basic data types of
2018 Integer/String/Buffer are simply emitted as their values, without a data
2019 type string -- since the data type is obvious from the output. ACPICA BZ
2022 Example Code and Data Size: These are the sizes for the OS-independent
2023 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2024 debug version of the code includes the debug output trace mechanism and
2025 has a much larger code and data size.
2028 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
2029 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
2031 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
2032 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
2035 2) iASL Compiler/Disassembler and Tools:
2037 iASL: Fixed some issues with the ASL Include() operator. This operator
2038 was incorrectly defined in the iASL parser rules, causing a new scope to
2039 be opened for the code within the include file. This could lead to
2040 several issues, including allowing ASL code that is technically illegal
2041 and not supported by AML interpreters. Note, this does not affect the
2042 related #include preprocessor operator. ACPICA BZ 1212.
2044 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
2045 operator is essentially an ASL macro since there is no AML opcode
2046 associated with it. The code emitted by the iASL compiler for ElseIf is
2047 an Else opcode followed immediately by an If opcode. The disassembler
2048 will now emit an ElseIf if it finds an Else immediately followed by an
2049 If. This simplifies the decoded ASL, especially for deeply nested
2050 If..Else and large Switch constructs. Thus, the disassembled code more
2051 closely follows the original source ASL. ACPICA BZ 1211. Example:
2063 ElseIf (Arg0 == 0x02)
2068 AcpiExec: Added support for the new module level code behavior and the
2069 early region installation. This required a small change to the
2070 initialization, since AcpiExec must install its own operation region
2073 AcpiExec: Added support to make the debug object timer optional. Default
2074 is timer disabled. This cleans up the debug object output -- the timer
2075 data is rarely used.
2077 AcpiExec: Multiple ACPI tables are now loaded in the order that they
2078 appear on the command line. This can be important when there are
2079 interdependencies/references between the tables.
2081 iASL/Templates. Add support to generate template files with multiple
2082 SSDTs within a single output file. Also added ommand line support to
2083 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
2087 ----------------------------------------
2088 24 November 2015. Summary of changes for version 20151124:
2090 1) ACPICA kernel-resident subsystem:
2092 Fixed a possible regression for a previous update to FADT handling. The
2093 FADT no longer has a fixed table ID, causing some issues with code that
2094 was hardwired to a specific ID. Lv Zheng.
2096 Fixed a problem where the method auto-serialization could interfere with
2097 the current SyncLevel. This change makes the auto-serialization support
2098 transparent to the SyncLevel support and management.
2100 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
2101 interface is intended for early access to the namespace during the
2102 initial namespace device discovery walk. The _SUB method has been seen to
2103 access operation regions in some cases, causing errors because the
2104 operation regions are not fully initialized.
2106 AML Debugger: Fixed some issues with the terminate/quit/exit commands
2107 that can cause faults. Lv Zheng.
2109 AML Debugger: Add thread ID support so that single-step mode only applies
2110 to the AML Debugger thread. This prevents runtime errors within some
2113 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
2114 methods that are invoked by this interface are optional, removed warnings
2115 emitted for the case where one or more of these methods do not exist.
2116 ACPICA BZ 1208, original change by Prarit Bhargava.
2118 Made a major pass through the entire ACPICA source code base to
2119 standardize formatting that has diverged a bit over time. There are no
2120 functional changes, but this will of course cause quite a few code
2121 differences from the previous ACPICA release.
2123 Example Code and Data Size: These are the sizes for the OS-independent
2124 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2125 debug version of the code includes the debug output trace mechanism and
2126 has a much larger code and data size.
2129 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
2130 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
2132 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2133 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
2136 2) iASL Compiler/Disassembler and Tools:
2138 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
2139 definition blocks within a single ASL file and the resulting AML file.
2140 Support for this type of file was also added to the various tools that
2141 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
2142 example code below shows two definition blocks within the same file:
2144 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
2148 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
2152 iASL: Enhanced typechecking for the Name() operator. All expressions for
2153 the value of the named object must be reduced/folded to a single constant
2154 at compile time, as per the ACPI specification (the AML definition of
2157 iASL: Fixed some code indentation issues for the -ic and -ia options (C
2158 and assembly headers). Now all emitted code correctly begins in column 1.
2160 iASL: Added an error message for an attempt to open a Scope() on an
2161 object defined in an SSDT. The DSDT is always loaded into the namespace
2162 first, so any attempt to open a Scope on an SSDT object will fail at
2166 ----------------------------------------
2167 30 September 2015. Summary of changes for version 20150930:
2169 1) ACPICA kernel-resident subsystem:
2171 Debugger: Implemented several changes and bug fixes to assist support for
2172 the in-kernel version of the AML debugger. Lv Zheng.
2173 - Fix the "predefined" command for in-kernel debugger.
2174 - Do not enter debug command loop for the help and version commands.
2175 - Disallow "execute" command during execution/single-step of a method.
2177 Interpreter: Updated runtime typechecking for all operators that have
2178 target operands. The operand is resolved and validated that it is legal.
2179 For example, the target cannot be a non-data object such as a Device,
2180 Mutex, ThermalZone, etc., as per the ACPI specification.
2182 Debugger: Fixed the double-mutex user I/O handshake to work when local
2183 deadlock detection is enabled.
2185 Debugger: limited display of method locals and arguments (LocalX and
2186 ArgX) to only those that have actually been initialized. This prevents
2187 lines of extraneous output.
2189 Updated the definition of the NFIT table to correct the bit polarity of
2190 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
2192 Example Code and Data Size: These are the sizes for the OS-independent
2193 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2194 debug version of the code includes the debug output trace mechanism and
2195 has a much larger code and data size.
2198 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2199 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
2201 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
2202 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
2205 2) iASL Compiler/Disassembler and Tools:
2207 iASL: Improved the compile-time typechecking for operands of many of the
2210 -- Added an option to disable compiler operand/operator typechecking (-
2213 -- For the following operators, the TermArg operands are now validated
2214 when possible to be Integer data objects: BankField, OperationRegion,
2215 DataTableRegion, Buffer, and Package.
2217 -- Store (Source, Target): Both the source and target operands are
2218 resolved and checked that the operands are both legal. For example,
2219 neither operand can be a non-data object such as a Device, Mutex,
2220 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
2221 operator can be used to store an object to any type of target object.
2223 -- Store (Source, Target): If the source is a Package object, the target
2224 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
2225 is a Package, the source must also be a Package.
2227 -- Store (Source, Target): A warning is issued if the source and target
2228 resolve to the identical named object.
2230 -- Store (Source, <method invocation>): An error is generated for the
2231 target method invocation, as this construct is not supported by the AML
2234 -- For all ASL math and logic operators, the target operand must be a
2235 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
2236 includes the function return value also.
2238 -- External declarations are also included in the typechecking where
2239 possible. External objects defined using the UnknownObj keyword cannot be
2240 typechecked, however.
2242 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
2244 - Legacy code: Index(PKG1, 3)
2245 - New ASL+ code: PKG1[3]
2246 This completes the ACPI 6.0 ASL+ support as it was the only operator not
2249 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
2250 spaces were inadvertently appended to the filename, causing file access
2251 and deletion problems on some systems.
2253 ASL Test Suite (ASLTS): Updated the master makefile to generate all
2254 possible compiler output files when building the test suite -- thus
2255 exercising these features of the compiler. These files are automatically
2256 deleted when the test suite exits.
2259 ----------------------------------------
2260 18 August 2015. Summary of changes for version 20150818:
2262 1) ACPICA kernel-resident subsystem:
2264 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
2265 Zheng. ACPICA BZ 1186.
2267 Completed development to ensure that the ACPICA Disassembler and Debugger
2268 are fully standalone components of ACPICA. Removed cross-component
2269 dependences. Lv Zheng.
2271 The max-number-of-AML-loops is now runtime configurable (previously was
2272 compile-time only). This is essentially a loop timeout to force-abort
2273 infinite AML loops. ACPCIA BZ 1192.
2275 Debugger: Cleanup output to dump ACPI names and namepaths without any
2276 trailing underscores. Lv Zheng. ACPICA BZ 1135.
2278 Removed unnecessary conditional compilations across the Debugger and
2279 Disassembler components where entire modules could be left uncompiled.
2281 The aapits test is deprecated and has been removed from the ACPICA git
2282 tree. The test has never been completed and has not been maintained, thus
2283 becoming rather useless. ACPICA BZ 1015, 794.
2285 A batch of small changes to close bugzilla and other reports:
2286 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
2287 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
2288 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
2289 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
2291 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
2293 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
2295 - Debugger: Split debugger initialization/termination interfaces. Lv
2297 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
2299 - AcpiExec: Add debug message during _REG method phase during table
2301 - AcpiNames: Fix a regression where some output was missing and no longer
2303 - Debugger: General cleanup and simplification. Lv Zheng.
2304 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
2306 Example Code and Data Size: These are the sizes for the OS-independent
2307 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2308 debug version of the code includes the debug output trace mechanism and
2309 has a much larger code and data size.
2312 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
2313 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
2315 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
2316 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
2319 2) iASL Compiler/Disassembler and Tools:
2321 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
2322 were not handled properly and caused load errors. Now, properly invoke
2323 and use the ACPICA auto-reallocate mechanism for ACPI table data
2324 structures. ACPICA BZ 1188
2326 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
2329 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
2330 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
2331 executed during initialization. ACPICA BZ 1187, 1189.
2333 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
2334 that corresponds to each disassembled ASL statement, to simplify
2335 debugging. ACPICA BZ 1191.
2337 Debugger: Add option to the "objects" command to display a summary of the
2338 current namespace objects (Object type and count). This is displayed if
2339 the command is entered with no arguments.
2341 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
2344 ----------------------------------------
2345 17 July 2015. Summary of changes for version 20150717:
2347 1) ACPICA kernel-resident subsystem:
2349 Improved the partitioning between the Debugger and Disassembler
2350 components. This allows the Debugger to be used standalone within kernel
2351 code without the Disassembler (which is used for single stepping also).
2352 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
2354 Debugger: Implemented a new command to trace the execution of control
2355 methods (Trace). This is especially useful for the in-kernel version of
2356 the debugger when file I/O may not be available for method trace output.
2357 See the ACPICA reference for more information. Lv Zheng.
2359 Moved all C library prototypes (used for the local versions of these
2360 functions when requested) to a new header, acclib.h
2361 Cleaned up the use of non-ANSI C library functions. These functions are
2362 implemented locally in ACPICA. Moved all such functions to a common
2363 source file, utnonansi.c
2365 Debugger: Fixed a problem with the "!!" command (get last command
2366 executed) where the debugger could enter an infinite loop and eventually
2369 Removed the use of local macros that were used for some of the standard C
2370 library functions to automatically cast input parameters. This mostly
2371 affected the is* functions where the input parameter is defined to be an
2372 int. This required a few modifications to the main ACPICA source code to
2373 provide casting for these functions and eliminate possible compiler
2374 warnings for these parameters.
2376 Across the source code, added additional status/error checking to resolve
2377 issues discovered by static source code analysis tools such as Coverity.
2379 Example Code and Data Size: These are the sizes for the OS-independent
2380 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2381 debug version of the code includes the debug output trace mechanism and
2382 has a much larger code and data size.
2385 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
2386 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
2388 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2389 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2392 2) iASL Compiler/Disassembler and Tools:
2394 iASL: Fixed a regression where the device map file feature no longer
2395 worked properly when used in conjunction with the disassembler. It only
2396 worked properly with the compiler itself.
2398 iASL: Implemented a new warning for method LocalX variables that are set
2399 but never used (similar to a C compiler such as gcc). This also applies
2400 to ArgX variables that are not defined by the parent method, and are
2401 instead (legally) used as local variables.
2403 iASL/Preprocessor: Finished the pass-through of line numbers from the
2404 preprocessor to the compiler. This ensures that compiler errors/warnings
2405 have the correct original line numbers and filenames, regardless of any
2408 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
2409 pass-through of comments to the preprocessor output file (which becomes
2410 the compiler input file). Also fixed a problem with // comments that
2411 appear after a math expression.
2413 iASL: Added support for the TCPA server table to the table compiler and
2414 template generator. (The client table was already previously supported)
2416 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
2417 identify the iASL compiler.
2419 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
2420 multiple times. The new names are ACPI_SIGN_NEGATIVE and
2423 AcpiHelp: Update to expand help messages for the iASL preprocessor
2427 ----------------------------------------
2428 19 June 2015. Summary of changes for version 20150619:
2430 Two regressions in version 20150616 have been addressed:
2432 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
2433 etc.) This update changes ACPICA to only use the standard headers for
2434 functions, or the prototypes for the local versions of the C library
2435 functions. Across the source code, this required some additional casts
2436 for some Clib invocations for portability. Moved all local prototypes to
2437 a new file, acclib.h
2439 Fixes several problems with recent changes to the handling of the FACS
2440 table that could cause some systems not to boot.
2443 ----------------------------------------
2444 16 June 2015. Summary of changes for version 20150616:
2447 1) ACPICA kernel-resident subsystem:
2449 Across the entire ACPICA source code base, the various macros for the C
2450 library functions (such as ACPI_STRLEN, etc.) have been removed and
2451 replaced by the standard C library names (strlen, etc.) The original
2452 purpose for these macros is no longer applicable. This simplification
2453 reduces the number of macros used in the ACPICA source code
2454 significantly, improving readability and maintainability.
2456 Implemented support for a new ACPI table, the OSDT. This table, the
2457 "override" SDT, can be loaded directly by the host OS at boot time. It
2458 enables the replacement of existing namespace objects that were installed
2459 via the DSDT and/or SSDTs. The primary purpose for this is to replace
2460 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
2461 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
2464 Added support for systems with (improperly) two FACS tables -- a "32-bit"
2465 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
2466 X field). This change will support both automatically. There continues to
2467 be systems found with this issue. This support requires a change to the
2468 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
2469 been added to allow the host to select which FACS is desired
2470 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
2473 Added a new feature to allow for systems that do not contain an FACS.
2474 Although this is already supported on hardware-reduced platforms, the
2475 feature has been extended for all platforms. The reasoning is that we do
2476 not want to abort the entire ACPICA initialization just because the
2477 system is seriously buggy and has no FACS.
2479 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
2480 not correctly transcribed from the ACPI specification in ACPICA version
2483 Implemented support for the _CLS object in the AcpiGetObjectInfo external
2486 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
2487 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
2488 compiler also updated. Note: The TCPA "server" table is not supported by
2489 the disassembler/table-compiler at this time.
2491 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
2493 Example Code and Data Size: These are the sizes for the OS-independent
2494 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2495 debug version of the code includes the debug output trace mechanism and
2496 has a much larger code and data size.
2499 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2500 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2502 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2503 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2506 2) iASL Compiler/Disassembler and Tools:
2508 Disassembler: Fixed a problem with the new symbolic operator disassembler
2509 where incorrect ASL code could be emitted in some cases for the "non-
2510 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
2511 ShiftRight. The actual problem cases seem to be rather unusual in common
2512 ASL code, however. David Box.
2514 Modified the linux version of acpidump to obtain ACPI tables from not
2515 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
2518 iASL: Fixed a problem where the user preprocessor output file (.i)
2519 contained extra data that was not expected. The compiler was using this
2520 file as a temporary file and passed through #line directives in order to
2521 keep compiler error messages in sync with the input file and line number
2522 across multiple include files. The (.i) is no longer a temporary file as
2523 the compiler uses a new, different file for the original purpose.
2525 iASL: Fixed a problem where comments within the original ASL source code
2526 file were not passed through to the preprocessor output file, nor any
2529 iASL: Fixed some issues for the handling of the "#include" preprocessor
2530 directive and the similar (but not the same) "Include" ASL operator.
2532 iASL: Add support for the new OSDT in both the disassembler and compiler.
2534 iASL: Fixed a problem with the constant folding support where a Buffer
2535 object could be incorrectly generated (incorrectly formed) during a
2536 conversion to a Store() operator.
2538 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
2539 description text for the _REV predefined name. _REV now permanently
2540 returns 2, as per the ACPI 6.0 specification.
2542 Debugger: Enhanced the output of the Debug ASL object for references
2543 produced by the Index operator. For Buffers and strings, only output the
2544 actual byte pointed to by the index. For packages, only print the single
2545 package element decoded by the index. Previously, the entire
2546 buffer/string/package was emitted.
2548 iASL/Table-compiler: Fixed a regression where the "generic" data types
2549 were no longer recognized, causing errors.
2552 ----------------------------------------
2553 15 May 2015. Summary of changes for version 20150515:
2555 This release implements most of ACPI 6.0 as described below.
2557 1) ACPICA kernel-resident subsystem:
2559 Implemented runtime argument checking and return value checking for all
2560 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
2561 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
2563 Example Code and Data Size: These are the sizes for the OS-independent
2564 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2565 debug version of the code includes the debug output trace mechanism and
2566 has a much larger code and data size.
2569 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2570 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2572 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2573 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2576 2) iASL Compiler/Disassembler and Tools:
2578 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
2579 names (argument count validation and return value typechecking.)
2581 iASL disassembler and table compiler: implemented support for all new
2582 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
2584 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
2587 iASL preprocessor: Added a new directive to enable inclusion of binary
2588 blobs into ASL code. The new directive is #includebuffer. It takes a
2589 binary file as input and emits a named ascii buffer object into the ASL
2592 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
2594 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
2597 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
2601 ----------------------------------------
2602 10 April 2015. Summary of changes for version 20150410:
2604 Reverted a change introduced in version 20150408 that caused
2605 a regression in the disassembler where incorrect operator
2606 symbols could be emitted.
2609 ----------------------------------------
2610 08 April 2015. Summary of changes for version 20150408:
2613 1) ACPICA kernel-resident subsystem:
2615 Permanently set the return value for the _REV predefined name. It now
2616 returns 2 (was 5). This matches other ACPI implementations. _REV will be
2617 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
2618 for ACPI 2.0 and later. It should never be used to differentiate or
2619 identify operating systems.
2621 Added the "Windows 2015" string to the _OSI support. ACPICA will now
2622 return TRUE to a query with this string.
2624 Fixed several issues with the local version of the printf function.
2626 Added the C99 compiler option (-std=c99) to the Unix makefiles.
2629 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
2630 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
2632 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2633 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2636 2) iASL Compiler/Disassembler and Tools:
2638 iASL: Implemented an enhancement to the constant folding feature to
2639 transform the parse tree to a simple Store operation whenever possible:
2640 Add (2, 3, X) ==> is converted to: Store (5, X)
2641 X = 2 + 3 ==> is converted to: Store (5, X)
2643 Updated support for the SLIC table (Software Licensing Description Table)
2644 in both the Data Table compiler and the disassembler. The SLIC table
2645 support now conforms to "Microsoft Software Licensing Tables (SLIC and
2646 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
2647 following the ACPI header is now defined to be "Proprietary Data", and as
2648 such, can only be entered or displayed as a hex data block.
2650 Implemented full support for the MSDM table as described in the document
2651 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
2652 following the ACPI header is defined to be "Proprietary Data", and can
2653 only be entered or displayed as a hex data block.
2655 Implemented the -Pn option for the iASL Table Compiler (was only
2656 implemented for the ASL compiler). This option disables the iASL
2659 Disassembler: For disassembly of Data Tables, added a comment field
2660 around the Ascii equivalent data that is emitted as part of the "Raw
2661 Table Data" block. This prevents the iASL Preprocessor from possible
2662 confusion if/when the table is compiled.
2664 Disassembler: Added an option (-df) to force the disassembler to assume
2665 that the table being disassembled contains valid AML. This feature is
2666 useful for disassembling AML files that contain ACPI signatures other
2667 than DSDT or SSDT (such as OEMx or other signatures).
2669 Changes for the EFI version of the tools:
2670 1) Fixed a build error/issue
2671 2) Fixed a cast warning
2673 iASL: Fixed a path issue with the __FILE__ operator by making the
2674 directory prefix optional within the internal SplitInputFilename
2677 Debugger: Removed some unused global variables.
2679 Tests: Updated the makefile for proper generation of the AAPITS suite.
2682 ----------------------------------------
2683 04 February 2015. Summary of changes for version 20150204:
2685 ACPICA kernel-resident subsystem:
2687 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2688 copyright to all module headers and signons, including the standard Linux
2689 header. This affects virtually every file in the ACPICA core subsystem,
2690 iASL compiler, all ACPICA utilities, and the test suites.
2692 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
2693 A raw gpe handling mechanism was created to allow better handling of GPE
2694 storms that aren't easily managed by the normal handler. The raw handler
2695 allows disabling/renabling of the the GPE so that interrupt storms can be
2696 avoided in cases where events cannot be timely serviced. In this
2697 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
2698 GPE. This API will leave the reference counts undisturbed, thereby
2699 preventing unintentional clearing of the GPE when the intent in only to
2700 temporarily disable it. Raw handlers allow enabling and disabling of a
2701 GPE by removing GPE register locking. As such, raw handlers much provide
2702 their own locks while using GPE API's to protect access to GPE data
2706 Events: Always modify GPE registers under the GPE lock.
2707 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
2708 values. Reported as bug by joe.liu@apple.com.
2710 Unix makefiles: Separate option to disable optimizations and
2711 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
2712 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
2713 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
2714 errors when building ACPICA. This allows disabling the option without
2715 also having to disable optimazations.
2719 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2720 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
2723 --------------------------------------
2724 07 November 2014. Summary of changes for version 20141107:
2726 This release is available at https://acpica.org/downloads
2728 This release introduces and implements language extensions to ASL that
2729 provide support for symbolic ("C-style") operators and expressions. These
2730 language extensions are known collectively as ASL+.
2733 1) iASL Compiler/Disassembler and Tools:
2735 Disassembler: Fixed a problem with disassembly of the UartSerialBus
2736 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
2739 Disassembler: Fixed the Unicode macro support to add escape sequences.
2740 All non-printable ASCII values are emitted as escape sequences, as well
2741 as the standard escapes for quote and backslash. Ensures that the
2742 disassembled macro can be correctly recompiled.
2744 iASL: Added Printf/Fprintf macros for formatted output. These macros are
2745 translated to existing AML Concatenate and Store operations. Printf
2746 writes to the ASL Debug object. Fprintf allows the specification of an
2747 ASL name as the target. Only a single format specifier is required, %o,
2748 since the AML interpreter dynamically converts objects to the required
2751 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2752 (Concatenate (Concatenate (Concatenate ("", Arg0),
2753 ": Unexpected value for "), Arg1), ", "), Arg2),
2754 " at line "), Arg3), Debug)
2756 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
2757 Arg0, Arg1, Arg2, Arg3)
2759 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2760 ("", Arg1), ": "), Arg0), " Successful"), STR1)
2762 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
2764 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
2765 ASL parse tree before the AML code is generated. This allows blocks of
2766 ASL code to be removed in order to help locate and identify problem
2767 devices and/or code. David E. Box.
2769 AcpiExec: Added support (-fi) for an optional namespace object
2770 initialization file. This file specifies initial values for namespace
2771 objects as necessary for debugging and testing different ASL code paths
2772 that may be taken as a result of BIOS options.
2775 2) Overview of symbolic operator support for ASL (ASL+)
2776 -------------------------------------------------------
2778 As an extension to the ASL language, iASL implements support for symbolic
2779 (C-style) operators for math and logical expressions. This can greatly
2780 simplify ASL code as well as improve both readability and
2781 maintainability. These language extensions can exist concurrently with
2782 all legacy ASL code and expressions.
2784 The symbolic extensions are 100% compatible with existing AML
2785 interpreters, since no new AML opcodes are created. To implement the
2786 extensions, the iASL compiler transforms the symbolic expressions into
2787 the legacy ASL/AML equivalents at compile time.
2789 Full symbolic expressions are supported, along with the standard C
2790 precedence and associativity rules.
2792 Full disassembler support for the symbolic expressions is provided, and
2793 creates an automatic migration path for existing ASL code to ASL+ code
2794 via the disassembly process. By default, the disassembler now emits ASL+
2795 code with symbolic expressions. An option (-dl) is provided to force the
2796 disassembler to emit legacy ASL code if desired.
2798 Below is the complete list of the currently supported symbolic operators
2799 with examples. See the iASL User Guide for additional information.
2802 ASL+ Syntax Legacy ASL Equivalent
2803 ----------- ---------------------
2807 Z = X + Y Add (X, Y, Z)
2808 Z = X - Y Subtract (X, Y, Z)
2809 Z = X * Y Multiply (X, Y, Z)
2810 Z = X / Y Divide (X, Y, , Z)
2811 Z = X % Y Mod (X, Y, Z)
2812 Z = X << Y ShiftLeft (X, Y, Z)
2813 Z = X >> Y ShiftRight (X, Y, Z)
2814 Z = X & Y And (X, Y, Z)
2815 Z = X | Y Or (X, Y, Z)
2816 Z = X ^ Y Xor (X, Y, Z)
2821 // Logical operators
2823 (X == Y) LEqual (X, Y)
2824 (X != Y) LNotEqual (X, Y)
2825 (X < Y) LLess (X, Y)
2826 (X > Y) LGreater (X, Y)
2827 (X <= Y) LLessEqual (X, Y)
2828 (X >= Y) LGreaterEqual (X, Y)
2829 (X && Y) LAnd (X, Y)
2833 // Assignment and compound assignment operations
2836 X += Y Add (X, Y, X)
2837 X -= Y Subtract (X, Y, X)
2838 X *= Y Multiply (X, Y, X)
2839 X /= Y Divide (X, Y, , X)
2840 X %= Y Mod (X, Y, X)
2841 X <<= Y ShiftLeft (X, Y, X)
2842 X >>= Y ShiftRight (X, Y, X)
2843 X &= Y And (X, Y, X)
2845 X ^= Y Xor (X, Y, X)
2852 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2853 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2855 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2857 And (MEMB, 0xFFFFFFF0, SRMB)
2858 Store (MEMB, Local2)
2859 Store (PDBM, Local1)
2860 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2862 Or (PDBM, 0x02, PDBM)
2866 If (((R510 & 0x03FB) == 0x02E0) ||
2867 ((R520 & 0x03FB) == 0x02E0) ||
2868 ((R530 & 0x03FB) == 0x02E0) ||
2869 ((R540 & 0x03FB) == 0x02E0))
2871 SRMB = (MEMB & 0xFFFFFFF0)
2874 PDBM &= 0xFFFFFFFFFFFFFFF9
2880 Store (0x1234, Local1)
2881 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2882 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2883 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2884 Store (Index (PKG1, 0x03), Local6)
2885 Store (Add (Local3, Local2), Debug)
2886 Add (Local1, 0x0F, Local2)
2887 Add (Local1, Multiply (Local2, Local3), Local2)
2888 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2892 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2893 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2894 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2895 Local6 = Index (PKG1, 0x03)
2896 Debug = (Local3 + Local2)
2897 Local2 = (Local1 + 0x0F)
2898 Local2 = (Local1 + (Local2 * Local3))
2899 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2902 ----------------------------------------
2903 26 September 2014. Summary of changes for version 20140926:
2905 1) ACPICA kernel-resident subsystem:
2907 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2908 In order to support GPIO Connection objects with multiple pins, along
2909 with the related Field objects, the following changes to the interface
2910 have been made: The Address is now defined to be the offset in bits of
2911 the field unit from the previous invocation of a Connection. It can be
2912 viewed as a "Pin Number Index" into the connection resource descriptor.
2913 The BitWidth is the exact bit width of the field. It is usually one bit,
2914 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2915 additional information and examples.
2917 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2918 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2919 by the firmware), so that they cannot fire until they are enabled via
2920 AcpiUpdateAllGpes. Rafael J. Wysocki.
2922 Added a new return flag for the Event/GPE status interfaces --
2923 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2924 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2925 GPE currently has a handler associated with it, and can thus actually
2926 affect the system. Lv Zheng.
2928 Example Code and Data Size: These are the sizes for the OS-independent
2929 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2930 debug version of the code includes the debug output trace mechanism and
2931 has a much larger code and data size.
2934 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2935 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2937 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2938 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2940 2) iASL Compiler/Disassembler and Tools:
2942 iASL: Fixed a memory allocation/free regression introduced in 20140828
2943 that could cause the compiler to crash. This was introduced inadvertently
2944 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2947 iASL: Removed two error messages that have been found to create false
2948 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2949 1) Illegal forward reference within a method
2950 2) Illegal reference across two methods
2952 iASL: Implemented a new option (-lm) to create a hardware mapping file
2953 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2954 works for both the compiler and disassembler. See the iASL compiler user
2955 guide for additional information and examples (section 6.4.6).
2957 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2958 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2959 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2961 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2962 unless STDIN is actually a terminal. Assists with batch-mode processing.
2965 Disassembler/AcpiHelp: Added another large group of recognized _HID
2969 ----------------------------------------
2970 28 August 2014. Summary of changes for version 20140828:
2972 1) ACPICA kernel-resident subsystem:
2974 Fixed a problem related to the internal use of the Timer() operator where
2975 a 64-bit divide could cause an attempted link to a double-precision math
2976 library. This divide is not actually necessary, so the code was
2977 restructured to eliminate it. Lv Zheng.
2979 ACPI 5.1: Added support for the runtime validation of the _DSD package
2980 (similar to the iASL support).
2982 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2983 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2985 Example Code and Data Size: These are the sizes for the OS-independent
2986 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2987 debug version of the code includes the debug output trace mechanism and
2988 has a much larger code and data size.
2991 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2992 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2994 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2995 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2997 2) iASL Compiler/Disassembler and Tools:
2999 AcpiExec: Fixed a problem on unix systems where the original terminal
3000 state was not always properly restored upon exit. Seen when using the -v
3001 option. ACPICA BZ 1104.
3003 iASL: Fixed a problem with the validation of the ranges/length within the
3004 Memory24 resource descriptor. There was a boundary condition when the
3005 range was equal to the (length -1) caused by the fact that these values
3006 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
3008 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
3010 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
3012 now supported properly.
3014 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
3015 in the disassembler, data table compiler, and table template generator.
3017 iASL: Added a requirement for Device() objects that one of either a _HID
3018 or _ADR must exist within the scope of a Device, as per the ACPI
3019 specification. Remove a similar requirement that was incorrectly in place
3020 for the _DSD object.
3022 iASL: Added error detection for illegal named references within control
3023 methods that would cause runtime failures. Now trapped as errors are: 1)
3024 References to objects within a non-parent control method. 2) Forward
3025 references (within a method) -- for control methods, AML interpreters use
3026 a one-pass parse of control methods. ACPICA BZ 1008.
3028 iASL: Added error checking for dependencies related to the _PSx power
3029 methods. ACPICA BZ 1029.
3030 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
3032 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
3035 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
3036 deploying the existing object and string caches and adding new caches for
3039 iASL: Split the huge parser source file into multiple subfiles to improve
3040 manageability. Generation now requires the M4 macro preprocessor, which
3041 is part of the Bison distribution on both unix and windows platforms.
3043 AcpiSrc: Fixed and removed all extraneous warnings generated during
3044 entire ACPICA source code scan and/or conversion.
3047 ----------------------------------------
3049 24 July 2014. Summary of changes for version 20140724:
3051 The ACPI 5.1 specification has been released and is available at:
3052 http://uefi.org/specs/access
3055 0) ACPI 5.1 support in ACPICA:
3057 ACPI 5.1 is fully supported in ACPICA as of this release.
3059 New predefined names. Support includes iASL and runtime ACPICA
3061 _CCA (Cache Coherency Attribute).
3062 _DSD (Device-Specific Data). David Box.
3064 Modifications to existing ACPI tables. Support includes headers, iASL
3065 Data Table compiler, disassembler, and the template generator.
3066 FADT - New fields and flags. Graeme Gregory.
3067 GTDT - One new subtable and new fields. Tomasz Nowicki.
3068 MADT - Two new subtables. Tomasz Nowicki.
3069 PCCT - One new subtable.
3072 New notification type for System Resource Affinity change events.
3075 1) ACPICA kernel-resident subsystem:
3077 Fixed a regression introduced in 20140627 where a fault can happen during
3078 the deletion of Alias AML namespace objects. The problem affected both
3079 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
3081 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
3082 simple mechanism to enable wake GPEs that have no associated handler or
3083 control method. Rafael Wysocki.
3085 Updated the AcpiEnableGpe interface to disallow the enable if there is no
3086 handler or control method associated with the particular GPE. This will
3087 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
3089 Updated GPE handling and dispatch by disabling the GPE before clearing
3090 the status bit for edge-triggered GPEs. Lv Zheng.
3092 Added Timer() support to the AML Debug object. The current timer value is
3093 now displayed with each invocation of (Store to) the debug object to
3094 enable simple generation of execution times for AML code (method
3095 execution for example.) ACPICA BZ 1093.
3097 Example Code and Data Size: These are the sizes for the OS-independent
3098 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3099 debug version of the code includes the debug output trace mechanism and
3100 has a much larger code and data size.
3103 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
3104 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
3106 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
3107 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
3110 2) iASL Compiler/Disassembler and Tools:
3112 Fixed an issue with the recently added local printf implementation,
3113 concerning width/precision specifiers that could cause incorrect output.
3114 Lv Zheng. ACPICA BZ 1094.
3116 Disassembler: Added support to detect buffers that contain UUIDs and
3117 disassemble them to an invocation of the ToUUID operator. Also emit
3118 commented descriptions of known ACPI-related UUIDs.
3120 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
3121 -u. Adds three new files.
3123 iASL: Update table compiler and disassembler for DMAR table changes that
3124 were introduced in September 2013. With assistance by David Woodhouse.
3126 ----------------------------------------
3127 27 June 2014. Summary of changes for version 20140627:
3129 1) ACPICA kernel-resident subsystem:
3131 Formatted Output: Implemented local versions of standard formatted output
3132 utilities such as printf, etc. Over time, it has been discovered that
3133 there are in fact many portability issues with printf, and the addition
3134 of this feature will fix/prevent these issues once and for all. Some
3135 known issues are summarized below:
3137 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
3138 for the Linux kernel and is %uI64 for some MSVC versions.
3139 2) Invoking printf consistently in a manner that is portable across both
3140 32-bit and 64-bit platforms is difficult at best in many situations.
3141 3) The output format for pointers varies from system to system (leading
3142 zeros especially), and leads to inconsistent output from ACPICA across
3144 4) Certain platform-specific printf formats may conflict with ACPICA use.
3145 5) If there is no local C library available, ACPICA now has local support
3148 -- To address these printf issues in a complete manner, ACPICA now
3149 directly implements a small subset of printf format specifiers, only
3150 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
3152 Implemented support for ACPICA generation within the EFI environment.
3153 Initially, the AcpiDump utility is supported in the UEFI shell
3154 environment. Lv Zheng.
3156 Added a new external interface, AcpiLogError, to improve ACPICA
3157 portability. This allows the host to redirect error messages from the
3158 ACPICA utilities. Lv Zheng.
3160 Added and deployed new OSL file I/O interfaces to improve ACPICA
3168 There are C library implementations of these functions in the new file
3169 service_layers/oslibcfs.c -- however, the functions can be implemented by
3170 the local host in any way necessary. Lv Zheng.
3172 Implemented a mechanism to disable/enable ACPI table checksum validation
3173 at runtime. This can be useful when loading tables very early during OS
3174 initialization when it may not be possible to map the entire table in
3175 order to compute the checksum. Lv Zheng.
3177 Fixed a buffer allocation issue for the Generic Serial Bus support.
3178 Originally, a fixed buffer length was used. This change allows for
3179 variable-length buffers based upon the protocol indicated by the field
3180 access attributes. Reported by Lan Tianyu. Lv Zheng.
3182 Fixed a problem where an object detached from a namespace node was not
3183 properly terminated/cleared and could cause a circular list problem if
3184 reattached. ACPICA BZ 1063. David Box.
3186 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
3188 Fixed a possible memory leak in an error return path within the function
3189 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
3191 Example Code and Data Size: These are the sizes for the OS-independent
3192 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3193 debug version of the code includes the debug output trace mechanism and
3194 has a much larger code and data size.
3197 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
3198 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
3200 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
3201 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
3204 2) iASL Compiler/Disassembler and Tools:
3206 Disassembler: Add dump of ASCII equivalent text within a comment at the
3207 end of each line of the output for the Buffer() ASL operator.
3209 AcpiDump: Miscellaneous changes:
3210 Fixed repetitive table dump in -n mode.
3211 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
3212 the ACPI 2.0 GUID fails.
3214 iASL: Fixed a problem where the compiler could fault if incorrectly given
3215 an acpidump output file as input. ACPICA BZ 1088. David Box.
3217 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
3218 they are invoked without any arguments.
3220 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
3221 1086. Colin Ian King.
3223 Disassembler: Cleaned up a block of code that extracts a parent Op
3224 object. Added a comment that explains that the parent is guaranteed to be
3225 valid in this case. ACPICA BZ 1069.
3228 ----------------------------------------
3229 24 April 2014. Summary of changes for version 20140424:
3231 1) ACPICA kernel-resident subsystem:
3233 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
3234 Some of these tables are known to contain a trailing NULL entry. Lv
3237 Removed an extraneous error message for the case where there are a large
3238 number of system GPEs (> 124). This was the "32-bit FADT register is too
3239 long to convert to GAS struct" message, which is irrelevant for GPEs
3240 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
3241 (limited capacity) GAS bit length. Also, several changes to ensure proper
3242 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
3245 Implemented and deployed additional configuration support for the public
3246 ACPICA external interfaces. Entire classes of interfaces can now be
3247 easily modified or configured out, replaced by stubbed inline functions
3248 by default. Lv Zheng.
3250 Moved all public ACPICA runtime configuration globals to the public
3251 ACPICA external interface file for convenience. Also, removed some
3252 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
3254 Documentation: Added a new section to the ACPICA reference describing the
3255 maximum number of GPEs that can be supported by the FADT-defined GPEs in
3256 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
3259 Example Code and Data Size: These are the sizes for the OS-independent
3260 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3261 debug version of the code includes the debug output trace mechanism and
3262 has a much larger code and data size.
3265 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
3266 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
3268 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
3269 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
3272 2) iASL Compiler/Disassembler and Tools:
3274 iASL and disassembler: Add full support for the LPIT table (Low Power
3275 Idle Table). Includes support in the disassembler, data table compiler,
3276 and template generator.
3279 1) Add option to force the use of the RSDT (over the XSDT).
3280 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
3282 iASL: Add check for predefined packages that are too large. For
3283 predefined names that contain subpackages, check if each subpackage is
3284 too large. (Check for too small already exists.)
3286 Debugger: Updated the GPE command (which simulates a GPE by executing the
3287 GPE code paths in ACPICA). The GPE device is now optional, and defaults
3288 to the GPE 0/1 FADT-defined blocks.
3290 Unix application OSL: Update line-editing support. Add additional error
3291 checking and take care not to reset terminal attributes on exit if they
3292 were never set. This should help guarantee that the terminal is always
3293 left in the previous state on program exit.
3296 ----------------------------------------
3297 25 March 2014. Summary of changes for version 20140325:
3299 1) ACPICA kernel-resident subsystem:
3301 Updated the auto-serialize feature for control methods. This feature
3302 automatically serializes all methods that create named objects in order
3303 to prevent runtime errors. The update adds support to ignore the
3304 currently executing AML SyncLevel when invoking such a method, in order
3305 to prevent disruption of any existing SyncLevel priorities that may exist
3306 in the AML code. Although the use of SyncLevels is relatively rare, this
3307 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
3308 appear on some machines starting with the 20140214 release.
3310 Added a new external interface to allow the host to install ACPI tables
3311 very early, before the namespace is even created. AcpiInstallTable gives
3312 the host additional flexibility for ACPI table management. Tables can be
3313 installed directly by the host as if they had originally appeared in the
3314 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
3315 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
3316 with additional internal restructuring and cleanup. See the ACPICA
3317 Reference for interface details. Lv Zheng.
3319 Added validation of the checksum for all incoming dynamically loaded
3320 tables (via external interfaces or via AML Load/LoadTable operators). Lv
3323 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
3324 and GPE handler removal. Restructured calls to eliminate possible race
3325 conditions. Lv Zheng.
3327 Added a warning for the use/execution of the ASL/AML Unload (table)
3328 operator. This will help detect and identify machines that use this
3329 operator if and when it is ever used. This operator has never been seen
3330 in the field and the usage model and possible side-effects of the drastic
3331 runtime action of a full table removal are unknown.
3333 Reverted the use of #pragma push/pop which was introduced in the 20140214
3334 release. It appears that push and pop are not implemented by enough
3335 compilers to make the use of this feature feasible for ACPICA at this
3336 time. However, these operators may be deployed in a future ACPICA
3339 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
3342 Source code generation:
3343 1) Disabled the use of the "strchr" macro for the gcc-specific
3344 generation. For some versions of gcc, this macro can periodically expose
3345 a compiler bug which in turn causes compile-time error(s).
3346 2) Added support for PPC64 compilation. Colin Ian King.
3348 Example Code and Data Size: These are the sizes for the OS-independent
3349 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3350 debug version of the code includes the debug output trace mechanism and
3351 has a much larger code and data size.
3354 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
3355 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
3357 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
3358 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
3361 2) iASL Compiler/Disassembler and Tools:
3363 Disassembler: Added several new features to improve the readability of
3364 the resulting ASL code. Extra information is emitted within comment
3365 fields in the ASL code:
3366 1) Known _HID/_CID values are decoded to descriptive text.
3367 2) Standard values for the Notify() operator are decoded to descriptive
3369 3) Target operands are expanded to full pathnames (in a comment) when
3372 Disassembler: Miscellaneous updates for extern() handling:
3373 1) Abort compiler if file specified by -fe option does not exist.
3374 2) Silence unnecessary warnings about argument count mismatches.
3375 3) Update warning messages concerning unresolved method externals.
3376 4) Emit "UnknownObj" keyword for externals whose type cannot be
3380 1) Added the -a option to display both the ASL syntax and the AML
3381 encoding for an input ASL operator. This effectively displays all known
3382 information about an ASL operator with one AcpiHelp invocation.
3383 2) Added substring match support (similar to a wildcard) for the -i
3384 (_HID/PNP IDs) option.
3386 iASL/Disassembler: Since this tool does not yet support execution on big-
3387 endian machines, added detection of endianness and an error message if
3388 execution is attempted on big-endian. Support for big-endian within iASL
3389 is a feature that is on the ACPICA to-be-done list.
3392 1) Remove option to extract binary files from an acpidump; this function
3393 is made obsolete by the AcpiXtract utility.
3394 2) General cleanup of open files and allocated buffers.
3397 ----------------------------------------
3398 14 February 2014. Summary of changes for version 20140214:
3400 1) ACPICA kernel-resident subsystem:
3402 Implemented a new mechanism to proactively prevent problems with ill-
3403 behaved reentrant control methods that create named ACPI objects. This
3404 behavior is illegal as per the ACPI specification, but is nonetheless
3405 frequently seen in the field. Previously, this could lead to an
3406 AE_ALREADY_EXISTS exception if the method was actually entered by more
3407 than one thread. This new mechanism detects such methods at table load
3408 time and marks them "serialized" to prevent reentrancy. A new global
3409 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
3410 feature if desired. This mechanism and global option obsoletes and
3411 supersedes the previous AcpiGbl_SerializeAllMethods option.
3413 Added the "Windows 2013" string to the _OSI support. ACPICA will now
3414 respond TRUE to _OSI queries with this string. It is the stated policy of
3415 ACPICA to add new strings to the _OSI support as soon as possible after
3416 they are defined. See the full ACPICA _OSI policy which has been added to
3417 the utilities/utosi.c file.
3419 Hardened/updated the _PRT return value auto-repair code:
3420 1) Do not abort the repair on a single subpackage failure, continue to
3421 check all subpackages.
3422 2) Add check for the minimum subpackage length (4).
3423 3) Properly handle extraneous NULL package elements.
3425 Added support to avoid the possibility of infinite loops when traversing
3426 object linked lists. Never allow an infinite loop, even in the face of
3427 corrupted object lists.
3429 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
3430 pack(pop) directives to ensure that the ACPICA headers are independent of
3431 compiler settings or other host headers.
3433 Example Code and Data Size: These are the sizes for the OS-independent
3434 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3435 debug version of the code includes the debug output trace mechanism and
3436 has a much larger code and data size.
3439 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
3440 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
3442 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3443 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3446 2) iASL Compiler/Disassembler and Tools:
3448 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
3449 first reserved field was incorrectly forced to have a value of zero. This
3450 change correctly forces the field to have a value of one. ACPICA BZ 1081.
3452 Debugger: Added missing support for the "Extra" and "Data" subobjects
3453 when displaying object data.
3455 Debugger: Added support to display entire object linked lists when
3456 displaying object data.
3458 iASL: Removed the obsolete -g option to obtain ACPI tables from the
3459 Windows registry. This feature has been superseded by the acpidump
3463 ----------------------------------------
3464 14 January 2014. Summary of changes for version 20140114:
3466 1) ACPICA kernel-resident subsystem:
3468 Updated all ACPICA copyrights and signons to 2014. Added the 2014
3469 copyright to all module headers and signons, including the standard Linux
3470 header. This affects virtually every file in the ACPICA core subsystem,
3471 iASL compiler, all ACPICA utilities, and the test suites.
3473 Improved parameter validation for AcpiInstallGpeBlock. Added the
3475 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
3476 2) There is not already a GPE block attached to the device.
3477 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
3480 Correctly support "references" in the ACPI_OBJECT. This change fixes the
3481 support to allow references (namespace nodes) to be passed as arguments
3482 to control methods via the evaluate object interface. This is probably
3483 most useful for testing purposes, however.
3485 Improved support for 32/64 bit physical addresses in printf()-like
3486 output. This change improves the support for physical addresses in printf
3487 debug statements and other output on both 32-bit and 64-bit hosts. It
3488 consistently outputs the appropriate number of bytes for each host. The
3489 %p specifier is unsatisfactory since it does not emit uniform output on
3490 all hosts/clib implementations (on some, leading zeros are not supported,
3491 leading to difficult-to-read output).
3493 Example Code and Data Size: These are the sizes for the OS-independent
3494 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3495 debug version of the code includes the debug output trace mechanism and
3496 has a much larger code and data size.
3499 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3500 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3502 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3503 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3506 2) iASL Compiler/Disassembler and Tools:
3508 iASL: Fix a possible fault when using the Connection() operator. Fixes a
3509 problem if the parent Field definition for the Connection operator refers
3510 to an operation region that does not exist. ACPICA BZ 1064.
3512 AcpiExec: Load of local test tables is now optional. The utility has the
3513 capability to load some various tables to test features of ACPICA.
3514 However, there are enough of them that the output of the utility became
3515 confusing. With this change, only the required local tables are displayed
3516 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
3517 line specification. This makes the default output simler and easier to
3518 understand. The -el command line option restores the original behavior
3519 for testing purposes.
3521 AcpiExec: Added support for overlapping operation regions. This change
3522 expands the simulation of operation regions by supporting regions that
3523 overlap within the given address space. Supports SystemMemory and
3524 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
3526 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
3527 allows AcpiExec to simulate these address spaces, similar to the current
3528 support for SystemMemory and SystemIO.
3530 Debugger: Added new command to read/write/compare all namespace objects.
3531 The command "test objects" will exercise the entire namespace by writing
3532 new values to each data object, and ensuring that the write was
3533 successful. The original value is then restored and verified.
3535 Debugger: Added the "test predefined" command. This change makes this
3536 test public and puts it under the new "test" command. The test executes
3537 each and every predefined name within the current namespace.
3540 ----------------------------------------
3541 18 December 2013. Summary of changes for version 20131218:
3543 Global note: The ACPI 5.0A specification was released this month. There
3544 are no changes needed for ACPICA since this release of ACPI is an
3545 errata/clarification release. The specification is available at
3549 1) ACPICA kernel-resident subsystem:
3551 Added validation of the XSDT root table if it is present. Some older
3552 platforms contain an XSDT that is ill-formed or otherwise invalid (such
3553 as containing some or all entries that are NULL pointers). This change
3554 adds a new function to validate the XSDT before actually using it. If the
3555 XSDT is found to be invalid, ACPICA will now automatically fall back to
3556 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
3557 ACPICA and enhanced by Lv Zheng and Bob Moore.
3559 Added a runtime option to ignore the XSDT and force the use of the RSDT.
3560 This change adds a runtime option that will force ACPICA to use the RSDT
3561 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
3562 requires that an XSDT be used instead of the RSDT, the XSDT has been
3563 found to be corrupt or ill-formed on some machines. Lv Zheng.
3565 Added a runtime option to favor 32-bit FADT register addresses over the
3566 64-bit addresses. This change adds an option to favor 32-bit FADT
3567 addresses when there is a conflict between the 32-bit and 64-bit versions
3568 of the same register. The default behavior is to use the 64-bit version
3569 in accordance with the ACPI specification. This can now be overridden via
3570 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
3572 During the change above, the internal "Convert FADT" and "Verify FADT"
3573 functions have been merged to simplify the code, making it easier to
3574 understand and maintain. ACPICA BZ 933.
3576 Improve exception reporting and handling for GPE block installation.
3577 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
3578 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
3580 Added helper macros to extract bus/segment numbers from the HEST table.
3581 This change adds two macros to extract the encoded bus and segment
3582 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
3583 Betty Dall <betty.dall@hp.com>
3585 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
3586 by ACPICA. It is not a public macro, so it should have no effect on
3587 existing OSV code. Lv Zheng.
3589 Example Code and Data Size: These are the sizes for the OS-independent
3590 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3591 debug version of the code includes the debug output trace mechanism and
3592 has a much larger code and data size.
3595 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3596 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3598 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3599 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3602 2) iASL Compiler/Disassembler and Tools:
3604 Disassembler: Improved pathname support for emitted External()
3605 statements. This change adds full pathname support for external names
3606 that have been resolved internally by the inclusion of additional ACPI
3607 tables (via the iASL -e option). Without this change, the disassembler
3608 can emit multiple externals for the same object, or it become confused
3609 when the Scope() operator is used on an external object. Overall, greatly
3610 improves the ability to actually recompile the emitted ASL code when
3611 objects a referenced across multiple ACPI tables. Reported by Michael
3612 Tsirkin (mst@redhat.com).
3614 Tests/ASLTS: Updated functional control suite to execute with no errors.
3615 David Box. Fixed several errors related to the testing of the interpreter
3616 slack mode. Lv Zheng.
3618 iASL: Added support to detect names that are declared within a control
3619 method, but are unused (these are temporary names that are only valid
3620 during the time the method is executing). A remark is issued for these
3621 cases. ACPICA BZ 1022.
3623 iASL: Added full support for the DBG2 table. Adds full disassembler,
3624 table compiler, and template generator support for the DBG2 table (Debug
3627 iASL: Added full support for the PCCT table, update the table definition.
3628 Updates the PCCT table definition in the actbl3.h header and adds table
3629 compiler and template generator support.
3631 iASL: Added an option to emit only error messages (no warnings/remarks).
3632 The -ve option will enable only error messages, warnings and remarks are
3633 suppressed. This can simplify debugging when only the errors are
3634 important, such as when an ACPI table is disassembled and there are many
3635 warnings and remarks -- but only the actual errors are of real interest.
3637 Example ACPICA code (source/tools/examples): Updated the example code so
3638 that it builds to an actual working program, not just example code. Added
3639 ACPI tables and execution of an example control method in the DSDT. Added
3640 makefile support for Unix generation.
3643 ----------------------------------------
3644 15 November 2013. Summary of changes for version 20131115:
3646 This release is available at https://acpica.org/downloads
3649 1) ACPICA kernel-resident subsystem:
3651 Resource Manager: Fixed loop termination for the "get AML length"
3652 function. The loop previously had an error termination on a NULL resource
3653 pointer, which can never happen since the loop simply increments a valid
3654 resource pointer. This fix changes the loop to terminate with an error on
3655 an invalid end-of-buffer condition. The problem can be seen as an
3656 infinite loop by callers to AcpiSetCurrentResources with an invalid or
3657 corrupted resource descriptor, or a resource descriptor that is missing
3658 an END_TAG descriptor. Reported by Dan Carpenter
3659 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
3661 Table unload and ACPICA termination: Delete all attached data objects
3662 during namespace node deletion. This fix updates namespace node deletion
3663 to delete the entire list of attached objects (attached via
3664 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
3665 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
3667 ACPICA termination: Added support to delete all objects attached to the
3668 root namespace node. This fix deletes any and all objects that have been
3669 attached to the root node via AcpiAttachData. Previously, none of these
3670 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
3672 Debug output: Do not emit the function nesting level for the in-kernel
3673 build. The nesting level is really only useful during a single-thread
3674 execution. Therefore, only enable this output for the AcpiExec utility.
3675 Also, only emit the thread ID when executing under AcpiExec (Context
3676 switches are still always detected and a message is emitted). ACPICA BZ
3679 Example Code and Data Size: These are the sizes for the OS-independent
3680 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3681 debug version of the code includes the debug output trace mechanism and
3682 has a much larger code and data size.
3685 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3686 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3688 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3689 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3692 2) iASL Compiler/Disassembler and Tools:
3694 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
3695 correct portable POSIX header for terminal control functions.
3697 Disassembler: Fixed control method invocation issues related to the use
3698 of the CondRefOf() operator. The problem is seen in the disassembly where
3699 control method invocations may not be disassembled properly if the
3700 control method name has been used previously as an argument to CondRefOf.
3701 The solution is to not attempt to emit an external declaration for the
3702 CondRefOf target (it is not necessary in the first place). This prevents
3703 disassembler object type confusion. ACPICA BZ 988.
3705 Unix Makefiles: Added an option to disable compiler optimizations and the
3706 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
3707 with optimizations (reportedly, gcc 4.4 for example). This change adds a
3708 command line option for make (NOOPT) that disables all compiler
3709 optimizations and the _FORTIFY_SOURCE compiler flag. The default
3710 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
3711 1034. Lv Zheng, Bob Moore.
3713 Tests/ASLTS: Added options to specify individual test cases and modes.
3714 This allows testers running aslts.sh to optionally specify individual
3715 test modes and test cases. Also added an option to disable the forced
3716 generation of the ACPICA tools from source if desired. Lv Zheng.
3718 ----------------------------------------
3719 27 September 2013. Summary of changes for version 20130927:
3721 This release is available at https://acpica.org/downloads
3724 1) ACPICA kernel-resident subsystem:
3726 Fixed a problem with store operations to reference objects. This change
3727 fixes a problem where a Store operation to an ArgX object that contained
3729 reference to a field object did not complete the automatic dereference
3731 then write to the actual field object. Instead, the object type of the
3732 field object was inadvertently changed to match the type of the source
3733 operand. The new behavior will actually write to the field object (buffer
3734 field or field unit), thus matching the correct ACPI-defined behavior.
3736 Implemented support to allow the host to redefine individual OSL
3737 prototypes. This change enables the host to redefine OSL prototypes found
3738 in the acpiosxf.h file. This allows the host to implement OSL interfaces
3739 with a macro or inlined function. Further, it allows the host to add any
3740 additional required modifiers such as __iomem, __init, __exit, etc., as
3741 necessary on a per-interface basis. Enables maximum flexibility for the
3742 OSL interfaces. Lv Zheng.
3744 Hardcoded the access width for the FADT-defined reset register. The ACPI
3745 specification requires the reset register width to be 8 bits. ACPICA now
3746 hardcodes the width to 8 and ignores the FADT width value. This provides
3747 compatibility with other ACPI implementations that have allowed BIOS code
3748 with bad register width values to go unnoticed. Matthew Garett, Bob
3752 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
3754 in the OSL header (acpiosxf). The change modifies the position of this
3755 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
3756 build issues if the OSL defines the implementation of the interface to be
3757 an inline stub function. Lv Zheng.
3759 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
3760 initialization interfaces. This change adds a new macro for the main init
3761 and terminate external interfaces in order to support hosts that require
3762 additional or different processing for these functions. Changed from
3763 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
3766 Cleaned up the memory allocation macros for configurability. In the
3768 case, the ACPI_ALLOCATE and related macros now resolve directly to their
3769 respective AcpiOs* OSL interfaces. Two options:
3770 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
3771 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
3772 2) For AcpiExec (and for debugging), the macros can optionally be
3774 to the local ACPICA interfaces that track each allocation (local tracking
3775 is used to immediately detect memory leaks).
3778 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
3779 to predefine this macro to either TRUE or FALSE during the system build.
3781 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
3783 Example Code and Data Size: These are the sizes for the OS-independent
3784 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3785 debug version of the code includes the debug output trace mechanism and
3786 has a much larger code and data size.
3789 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3790 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3792 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3793 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3796 2) iASL Compiler/Disassembler and Tools:
3798 iASL: Implemented wildcard support for the -e option. This simplifies use
3799 when there are many SSDTs that must be included to resolve external
3801 declarations. ACPICA BZ 1041. Example:
3802 iasl -e ssdt*.dat -d dsdt.dat
3804 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3805 adds a portable module that implements full history and limited line
3806 editing for Unix and Linux systems. It does not use readline() due to
3807 portability issues. Instead it uses the POSIX termio interface to put the
3808 terminal in raw input mode so that the various special keys can be
3810 (such as up/down-arrow for history support and left/right-arrow for line
3811 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3813 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3814 one or more spaces. This provides compatible with early or different
3815 versions of the AcpiDump utility. ACPICA BZ 1044.
3817 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3818 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3819 no other data. This change adds support to dump these tables. Any tables
3820 shorter than the length of an ACPI table header remain in error (an error
3821 message is emitted). Reported by Yi Li.
3823 Debugger: Echo actual command along with the "unknown command" message.
3825 ----------------------------------------
3826 23 August 2013. Summary of changes for version 20130823:
3828 1) ACPICA kernel-resident subsystem:
3830 Implemented support for host-installed System Control Interrupt (SCI)
3831 handlers. Certain ACPI functionality requires the host to handle raw
3832 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3833 state support requires the host device driver to handle SCIs to examine
3834 if the doorbell has been activated. Multiple SCI handlers can be
3835 installed to allow for future expansion. New external interfaces are
3836 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3837 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3839 Operation region support: Never locally free the handler "context"
3840 pointer. This change removes some dangerous code that attempts to free
3841 the handler context pointer in some (rare) circumstances. The owner of
3842 the handler owns this pointer and the ACPICA code should never touch it.
3843 Although not seen to be an issue in any kernel, it did show up as a
3844 problem (fault) under AcpiExec. Also, set the internal storage field for
3845 the context pointer to zero when the region is deactivated, simply for
3846 sanity. David Box. ACPICA BZ 1039.
3848 AcpiRead: On error, do not modify the return value target location. If an
3849 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3850 modify the target of the return value pointer. Makes the code consistent
3851 with the rest of ACPICA. Bjorn Helgaas.
3853 Example Code and Data Size: These are the sizes for the OS-independent
3854 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3855 debug version of the code includes the debug output trace mechanism and
3856 has a much larger code and data size.
3859 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3860 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3862 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3863 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3866 2) iASL Compiler/Disassembler and Tools:
3868 AcpiDump: Implemented several new features and fixed some problems:
3869 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3870 2) Added support for multiple table instances (SSDT, UEFI).
3871 3) Added option to dump "customized" (overridden) tables (-c).
3872 4) Fixed a problem where some table filenames were improperly
3874 5) Improved some error messages, removed some unnecessary messages.
3876 iASL: Implemented additional support for disassembly of ACPI tables that
3877 contain invocations of external control methods. The -fe<file> option
3878 allows the import of a file that specifies the external methods along
3879 with the required number of arguments for each -- allowing for the
3880 correct disassembly of the table. This is a workaround for a limitation
3881 of AML code where the disassembler often cannot determine the number of
3882 arguments required for an external control method and generates incorrect
3883 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3885 Debugger: Implemented a new command (paths) that displays the full
3886 pathnames (namepaths) and object types of all objects in the namespace.
3887 This is an alternative to the namespace command.
3889 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3890 mechanism and any installed handlers.
3892 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3893 This can occur if there are too many parent prefixes in a namepath (for
3894 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3896 Application OSLs: Set the return value for the PCI read functions. These
3897 functions simply return AE_OK, but should set the return value to zero
3898 also. This change implements this. ACPICA BZ 1038.
3900 Debugger: Prevent possible command line buffer overflow. Increase the
3901 size of a couple of the debugger line buffers, and ensure that overflow
3902 cannot happen. ACPICA BZ 1037.
3904 iASL: Changed to abort immediately on serious errors during the parsing
3905 phase. Due to the nature of ASL, there is no point in attempting to
3906 compile these types of errors, and they typically end up causing a
3907 cascade of hundreds of errors which obscure the original problem.
3909 ----------------------------------------
3910 25 July 2013. Summary of changes for version 20130725:
3912 1) ACPICA kernel-resident subsystem:
3914 Fixed a problem with the DerefOf operator where references to FieldUnits
3915 and BufferFields incorrectly returned the parent object, not the actual
3916 value of the object. After this change, a dereference of a FieldUnit
3917 reference results in a read operation on the field to get the value, and
3918 likewise, the appropriate BufferField value is extracted from the target
3921 Fixed a problem where the _WAK method could cause a fault under these
3922 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3923 method returned no value. The problem is rarely seen because most kernels
3924 run ACPICA in slack mode.
3926 For the DerefOf operator, a fatal error now results if an attempt is made
3927 to dereference a reference (created by the Index operator) to a NULL
3928 package element. Provides compatibility with other ACPI implementations,
3929 and this behavior will be added to a future version of the ACPI
3932 The ACPI Power Management Timer (defined in the FADT) is now optional.
3933 This provides compatibility with other ACPI implementations and will
3934 appear in the next version of the ACPI specification. If there is no PM
3935 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3936 zero in the FADT indicates no PM timer.
3938 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3939 allows the host to globally enable/disable all vendor strings, all
3940 feature strings, or both. Intended to be primarily used for debugging
3941 purposes only. Lv Zheng.
3943 Expose the collected _OSI data to the host via a global variable. This
3944 data tracks the highest level vendor ID that has been invoked by the BIOS
3945 so that the host (and potentially ACPICA itself) can change behaviors
3946 based upon the age of the BIOS.
3948 Example Code and Data Size: These are the sizes for the OS-independent
3949 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3950 debug version of the code includes the debug output trace mechanism and
3951 has a much larger code and data size.
3954 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3955 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3957 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3958 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3961 2) iASL Compiler/Disassembler and Tools:
3963 iASL: Created the following enhancements for the -so option (create
3965 1)Add offsets for the last nameseg in each namepath for every supported
3967 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3968 3)Add the actual AML opcode for the parent object of every supported
3970 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3972 Disassembler: Emit all unresolved external symbols in a single block.
3973 These are external references to control methods that could not be
3974 resolved, and thus, the disassembler had to make a guess at the number of
3977 iASL: The argument to the -T option (create table template) is now
3978 optional. If not specified, the default table is a DSDT, typically the
3981 ----------------------------------------
3982 26 June 2013. Summary of changes for version 20130626:
3984 1) ACPICA kernel-resident subsystem:
3986 Fixed an issue with runtime repair of the _CST object. Null or invalid
3987 elements were not always removed properly. Lv Zheng.
3989 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3990 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3991 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3992 makes the system-wide number of GPEs essentially unlimited.
3994 Example Code and Data Size: These are the sizes for the OS-independent
3995 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3996 debug version of the code includes the debug output trace mechanism and
3997 has a much larger code and data size.
4000 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
4001 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
4003 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
4004 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
4007 2) iASL Compiler/Disassembler and Tools:
4009 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
4010 hosts. Now supports Linux, FreeBSD, and Windows.
4012 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
4013 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
4015 iASL/Preprocessor: Implemented full support for nested
4016 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
4018 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
4019 max. The original purpose of this constraint was to limit the amount of
4020 debug output. However, the string function in question (UtPrintString) is
4021 now used for the disassembler also, where 256 bytes is insufficient.
4022 Reported by RehabMan@GitHub.
4024 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
4025 tables. ACPICA BZ 999. Lv Zheng.
4027 iASL: Fixed a couple of error exit issues that could result in a "Could
4028 not delete <file>" message during ASL compilation.
4030 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
4031 the actual signatures for these tables are "FACP" and "APIC",
4034 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
4035 tables are allowed to have multiple instances.
4037 ----------------------------------------
4038 17 May 2013. Summary of changes for version 20130517:
4040 1) ACPICA kernel-resident subsystem:
4042 Fixed a regression introduced in version 20130328 for _INI methods. This
4043 change fixes a problem introduced in 20130328 where _INI methods are no
4044 longer executed properly because of a memory block that was not
4045 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
4046 <tomasz.nowicki@linaro.org>.
4048 Fixed a possible problem with the new extended sleep registers in the
4050 5.0 FADT. Do not use these registers (even if populated) unless the HW-
4051 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
4054 Implemented return value repair code for _CST predefined objects: Sort
4056 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
4058 Implemented a debug-only option to disable loading of SSDTs from the
4059 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
4060 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
4061 acglobal.h - ACPICA BZ 1005. Lv Zheng.
4063 Fixed some issues in the ACPICA initialization and termination code:
4064 Tomasz Nowicki <tomasz.nowicki@linaro.org>
4065 1) Clear events initialized flag upon event component termination. ACPICA
4067 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
4068 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
4069 4) Clear debug buffer global on termination to prevent possible multiple
4070 delete. ACPICA BZ 1010.
4072 Standardized all switch() blocks across the entire source base. After
4074 years, different formatting for switch() had crept in. This change makes
4075 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
4077 Split some files to enhance ACPICA modularity and configurability:
4078 1) Split buffer dump routines into utilities/utbuffer.c
4079 2) Split internal error message routines into utilities/uterror.c
4080 3) Split table print utilities into tables/tbprint.c
4081 4) Split iASL command-line option processing into asloptions.c
4083 Makefile enhancements:
4084 1) Support for all new files above.
4085 2) Abort make on errors from any subcomponent. Chao Guan.
4086 3) Add build support for Apple Mac OS X. Liang Qi.
4088 Example Code and Data Size: These are the sizes for the OS-independent
4089 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4090 debug version of the code includes the debug output trace mechanism and
4091 has a much larger code and data size.
4094 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
4095 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
4097 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
4098 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
4101 2) iASL Compiler/Disassembler and Tools:
4103 New utility: Implemented an easily portable version of the acpidump
4104 utility to extract ACPI tables from the system (or a file) in an ASCII
4106 dump format. The top-level code implements the various command line
4107 options, file I/O, and table dump routines. To port to a new host, only
4108 three functions need to be implemented to get tables -- since this
4109 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
4110 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
4111 1) The Windows version obtains the ACPI tables from the Registry.
4112 2) The Linux version is under development.
4113 3) Other hosts - If an OS-dependent module is submitted, it will be
4114 distributed with ACPICA.
4116 iASL: Fixed a regression for -D preprocessor option (define symbol). A
4117 restructuring/change to the initialization sequence caused this option to
4118 no longer work properly.
4120 iASL: Implemented a mechanism to disable specific warnings and remarks.
4121 Adds a new command line option, "-vw <messageid> as well as "#pragma
4122 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
4124 iASL: Fix for too-strict package object validation. The package object
4125 validation for return values from the predefined names is a bit too
4126 strict, it does not allow names references within the package (which will
4127 be resolved at runtime.) These types of references cannot be validated at
4128 compile time. This change ignores named references within package objects
4129 for names that return or define static packages.
4131 Debugger: Fixed the 80-character command line limitation for the History
4132 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
4134 iASL: Added control method and package support for the -so option
4135 (generates AML offset table for BIOS support.)
4137 iASL: issue a remark if a non-serialized method creates named objects. If
4138 a thread blocks within the method for any reason, and another thread
4139 enters the method, the method will fail because an attempt will be made
4141 create the same (named) object twice. In this case, issue a remark that
4142 the method should be marked serialized. NOTE: may become a warning later.
4145 ----------------------------------------
4146 18 April 2013. Summary of changes for version 20130418:
4148 1) ACPICA kernel-resident subsystem:
4150 Fixed a possible buffer overrun during some rare but specific field unit
4151 read operations. This overrun can only happen if the DSDT version is 1 --
4152 meaning that all AML integers are 32 bits -- and the field length is
4153 between 33 and 55 bits long. During the read, an internal buffer object
4155 created for the field unit because the field is larger than an integer
4157 bits). However, in this case, the buffer will be incorrectly written
4158 beyond the end because the buffer length is less than the internal
4160 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
4161 long, but a full 8 bytes will be written.
4163 Updated the Embedded Controller "orphan" _REG method support. This refers
4164 to _REG methods under the EC device that have no corresponding operation
4165 region. This is allowed by the ACPI specification. This update removes a
4166 dependency on the existence an ECDT table. It will execute an orphan _REG
4167 method as long as the operation region handler for the EC is installed at
4168 the EC device node and not the namespace root. Rui Zhang (original
4169 update), Bob Moore (update/integrate).
4171 Implemented run-time argument typechecking for all predefined ACPI names
4172 (_STA, _BIF, etc.) This change performs object typechecking on all
4173 incoming arguments for all predefined names executed via
4174 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
4175 passing correct object types as well as the correct number of arguments
4176 (therefore identifying any issues immediately). Also, the ASL/namespace
4177 definition of the predefined name is checked against the ACPI
4178 specification for the proper argument count. Adds one new file,
4181 Changed an exception code for the ASL UnLoad() operator. Changed the
4182 exception code for the case where the input DdbHandle is invalid, from
4183 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
4185 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
4186 global makefile. The use of this flag causes compiler errors on earlier
4187 versions of GCC, so it has been removed for compatibility.
4189 Miscellaneous cleanup:
4190 1) Removed some unused/obsolete macros
4191 2) Fixed a possible memory leak in the _OSI support
4192 3) Removed an unused variable in the predefined name support
4193 4) Windows OSL: remove obsolete reference to a memory list field
4195 Example Code and Data Size: These are the sizes for the OS-independent
4196 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4197 debug version of the code includes the debug output trace mechanism and
4198 has a much larger code and data size.
4201 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
4202 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
4204 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
4205 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
4208 2) iASL Compiler/Disassembler and Tools:
4210 AcpiExec: Added installation of a handler for the SystemCMOS address
4211 space. This prevents control method abort if a method accesses this
4214 AcpiExec: Added support for multiple EC devices, and now install EC
4215 operation region handler(s) at the actual EC device instead of the
4216 namespace root. This reflects the typical behavior of host operating
4219 AcpiExec: Updated to ensure that all operation region handlers are
4220 installed before the _REG methods are executed. This prevents a _REG
4221 method from aborting if it accesses an address space has no handler.
4222 AcpiExec installs a handler for every possible address space.
4224 Debugger: Enhanced the "handlers" command to display non-root handlers.
4225 This change enhances the handlers command to display handlers associated
4226 with individual devices throughout the namespace, in addition to the
4227 currently supported display of handlers associated with the root
4231 ASL Test Suite: Several test suite errors have been identified and
4232 resolved, reducing the total error count during execution. Chao Guan.
4234 ----------------------------------------
4235 28 March 2013. Summary of changes for version 20130328:
4237 1) ACPICA kernel-resident subsystem:
4239 Fixed several possible race conditions with the internal object reference
4240 counting mechanism. Some of the external ACPICA interfaces update object
4241 reference counts without holding the interpreter or namespace lock. This
4242 change adds a spinlock to protect reference count updates on the internal
4243 ACPICA objects. Reported by and with assistance from Andriy Gapon
4246 FADT support: Removed an extraneous warning for very large GPE register
4247 sets. This change removes a size mismatch warning if the legacy length
4248 field for a GPE register set is larger than the 64-bit GAS structure can
4249 accommodate. GPE register sets can be larger than the 255-bit width
4250 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
4252 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
4253 return from this interface. Handles a possible timeout case if
4254 ACPI_WAIT_FOREVER is modified by the host to be a value less than
4255 "forever". Jung-uk Kim.
4257 Predefined name support: Add allowed/required argument type information
4259 the master predefined info table. This change adds the infrastructure to
4260 enable typechecking on incoming arguments for all predefined
4261 methods/objects. It does not actually contain the code that will fully
4262 utilize this information, this is still under development. Also condenses
4263 some duplicate code for the predefined names into a new module,
4264 utilities/utpredef.c
4266 Example Code and Data Size: These are the sizes for the OS-independent
4267 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4268 debug version of the code includes the debug output trace mechanism and
4269 has a much larger code and data size.
4272 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
4273 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
4275 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
4276 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
4279 2) iASL Compiler/Disassembler and Tools:
4281 iASL: Implemented a new option to simplify the development of ACPI-
4283 BIOS code. Adds support for a new "offset table" output file. The -so
4284 option will create a C table containing the AML table offsets of various
4285 named objects in the namespace so that BIOS code can modify them easily
4287 boot time. This can simplify BIOS runtime code by eliminating expensive
4288 searches for "magic values", enhancing boot times and adding greater
4289 reliability. With assistance from Lee Hamel.
4291 iASL: Allow additional predefined names to return zero-length packages.
4292 Now, all predefined names that are defined by the ACPI specification to
4293 return a "variable-length package of packages" are allowed to return a
4294 zero length top-level package. This allows the BIOS to tell the host that
4295 the requested feature is not supported, and supports existing BIOS/ASL
4298 iASL: Changed the "result not used" warning to an error. This is the case
4299 where an ASL operator is effectively a NOOP because the result of the
4300 operation is not stored anywhere. For example:
4302 There is no target (missing 3rd argument), nor is the function return
4303 value used. This is potentially a very serious problem -- since the code
4304 was probably intended to do something, but for whatever reason, the value
4305 was not stored. Therefore, this issue has been upgraded from a warning to
4308 AcpiHelp: Added allowable/required argument types to the predefined names
4309 info display. This feature utilizes the recent update to the predefined
4310 names table (above).
4312 ----------------------------------------
4313 14 February 2013. Summary of changes for version 20130214:
4315 1) ACPICA Kernel-resident Subsystem:
4317 Fixed a possible regression on some hosts: Reinstated the safe return
4318 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
4319 evaluated only once. Although these macros are not needed for the ACPICA
4320 code itself, they are often used by ACPI-related host device drivers
4322 the safe feature may be necessary.
4324 Fixed several issues related to the ACPI 5.0 reduced hardware support
4325 (SOC): Now ensure that if the platform declares itself as hardware-
4327 via the FADT, the following functions become NOOPs (and always return
4328 AE_OK) because ACPI is always enabled by definition on these machines:
4334 Dynamic Object Repair: Implemented additional runtime repairs for
4335 predefined name return values. Both of these repairs can simplify code in
4336 the related device drivers that invoke these methods:
4337 1) For the _STR and _MLS names, automatically repair/convert an ASCII
4338 string to a Unicode buffer.
4339 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
4341 lone end tag descriptor in the following cases: A Return(0) was executed,
4342 a null buffer was returned, or no object at all was returned (non-slack
4343 mode only). Adds a new file, nsconvert.c
4344 ACPICA BZ 998. Bob Moore, Lv Zheng.
4346 Resource Manager: Added additional code to prevent possible infinite
4348 while traversing corrupted or ill-formed resource template buffers. Check
4349 for zero-length resource descriptors in all code that loops through
4350 resource templates (the length field is used to index through the
4351 template). This change also hardens the external AcpiWalkResources and
4352 AcpiWalkResourceBuffer interfaces.
4354 Local Cache Manager: Enhanced the main data structure to eliminate an
4355 unnecessary mechanism to access the next object in the list. Actually
4356 provides a small performance enhancement for hosts that use the local
4357 ACPICA cache manager. Jung-uk Kim.
4359 Example Code and Data Size: These are the sizes for the OS-independent
4360 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4361 debug version of the code includes the debug output trace mechanism and
4362 has a much larger code and data size.
4365 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
4366 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
4368 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
4369 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
4372 2) iASL Compiler/Disassembler and Tools:
4374 iASL/Disassembler: Fixed several issues with the definition of the ACPI
4375 5.0 RASF table (RAS Feature Table). This change incorporates late changes
4376 that were made to the ACPI 5.0 specification.
4378 iASL/Disassembler: Added full support for the following new ACPI tables:
4379 1) The MTMR table (MID Timer Table)
4380 2) The VRTC table (Virtual Real Time Clock Table).
4381 Includes header file, disassembler, table compiler, and template support
4384 iASL: Implemented compile-time validation of package objects returned by
4385 predefined names. This new feature validates static package objects
4386 returned by the various predefined names defined to return packages. Both
4387 object types and package lengths are validated, for both parent packages
4388 and sub-packages, if any. The code is similar in structure and behavior
4390 the runtime repair mechanism within the AML interpreter and uses the
4391 existing predefined name information table. Adds a new file, aslprepkg.c.
4394 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
4395 This feature detects a binary file with a valid ACPI table header and
4396 invokes the disassembler automatically. Eliminates the need to
4397 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
4399 iASL/Disassembler: Added several warnings for the case where there are
4400 unresolved control methods during the disassembly. This can potentially
4401 cause errors when the output file is compiled, because the disassembler
4402 assumes zero method arguments in these cases (it cannot determine the
4403 actual number of arguments without resolution/definition of the method).
4405 Debugger: Added support to display all resources with a single command.
4406 Invocation of the resources command with no arguments will now display
4408 resources within the current namespace.
4410 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
4413 ----------------------------------------
4414 17 January 2013. Summary of changes for version 20130117:
4416 1) ACPICA Kernel-resident Subsystem:
4418 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
4419 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
4420 objects to return a package containing one integer, most BIOS code
4422 two integers and the previous code reflects that. However, we also need
4424 support BIOS code that actually implements to the ACPI spec, and this
4425 change reflects this.
4427 Fixed two issues with the ACPI_DEBUG_PRINT macros:
4428 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
4429 C compilers that require this support.
4430 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
4431 ACPI_DEBUG is already used by many of the various hosts.
4433 Updated all ACPICA copyrights and signons to 2013. Added the 2013
4434 copyright to all module headers and signons, including the standard Linux
4435 header. This affects virtually every file in the ACPICA core subsystem,
4436 iASL compiler, all ACPICA utilities, and the test suites.
4438 Example Code and Data Size: These are the sizes for the OS-independent
4439 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4440 debug version of the code includes the debug output trace mechanism and
4441 has a much larger code and data size.
4444 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4445 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4447 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
4448 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
4451 2) iASL Compiler/Disassembler and Tools:
4453 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
4454 prevent a possible fault on some hosts. Some C libraries modify the arg
4455 pointer parameter to vfprintf making it difficult to call it twice in the
4456 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
4457 does not affect the Windows OSL since the Win C library does not modify
4458 the arg pointer. Chao Guan, Bob Moore.
4460 iASL: Fixed a possible infinite loop when the maximum error count is
4461 reached. If an output file other than the .AML file is specified (such as
4462 a listing file), and the maximum number of errors is reached, do not
4463 attempt to flush data to the output file(s) as the compiler is aborting.
4464 This can cause an infinite loop as the max error count code essentially
4465 keeps calling itself.
4467 iASL/Disassembler: Added an option (-in) to ignore NOOP
4469 Implemented for both the compiler and the disassembler. Often, the NOOP
4470 opcode is used as padding for packages that are changed dynamically by
4472 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
4473 errors. This option causes the disassembler to ignore all NOOP opcodes
4474 (0xA3), and it also causes the compiler to ignore all ASL source code
4478 Debugger: Enhanced the Sleep command to execute all sleep states. This
4479 change allows Sleep to be invoked with no arguments and causes the
4480 debugger to execute all of the sleep states, 0-5, automatically.
4482 ----------------------------------------
4483 20 December 2012. Summary of changes for version 20121220:
4485 1) ACPICA Kernel-resident Subsystem:
4487 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
4488 alternate entry point for AcpiWalkResources and improves the usability of
4489 the resource manager by accepting as input a buffer containing the output
4490 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
4491 input buffer is not deleted by this interface so that it can be used by
4492 the host later. See the ACPICA reference for details.
4494 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
4495 (DSDT version < 2). The constant will be truncated and this warning
4496 reflects that behavior.
4498 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
4499 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
4500 both get and set the new wake bit in these descriptors, separately from
4501 the existing share bit. Reported by Aaron Lu.
4503 Interpreter: Fix Store() when an implicit conversion is not possible. For
4504 example, in the cases such as a store of a string to an existing package
4505 object, implement the store as a CopyObject(). This is a small departure
4506 from the ACPI specification which states that the control method should
4508 aborted in this case. However, the ASLTS suite depends on this behavior.
4510 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
4511 macros: check if debug output is currently enabled as soon as possible to
4512 minimize performance impact if debug is in fact not enabled.
4514 Source code restructuring: Cleanup to improve modularity. The following
4515 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
4516 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
4517 Associated makefiles and project files have been updated.
4519 Changed an exception code for LoadTable operator. For the case where one
4520 of the input strings is too long, change the returned exception code from
4521 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
4523 Fixed a possible memory leak in dispatcher error path. On error, delete
4524 the mutex object created during method mutex creation. Reported by
4525 tim.gardner@canonical.com.
4527 Example Code and Data Size: These are the sizes for the OS-independent
4528 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4529 debug version of the code includes the debug output trace mechanism and
4530 has a much larger code and data size.
4533 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4534 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4536 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4537 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4540 2) iASL Compiler/Disassembler and Tools:
4542 iASL: Disallow a method call as argument to the ObjectType ASL operator.
4543 This change tracks an errata to the ACPI 5.0 document. The AML grammar
4544 will not allow the interpreter to differentiate between a method and a
4545 method invocation when these are used as an argument to the ObjectType
4546 operator. The ACPI specification change is to disallow a method
4548 (UserTerm) for the ObjectType operator.
4550 Finish support for the TPM2 and CSRT tables in the headers, table
4551 compiler, and disassembler.
4553 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
4554 always expires immediately if the semaphore is not available. The
4556 code was using a relative-time timeout, but sem_timedwait requires the
4558 of an absolute time.
4560 iASL: Added a remark if the Timer() operator is used within a 32-bit
4561 table. This operator returns a 64-bit time value that will be truncated
4562 within a 32-bit table.
4564 iASL Source code restructuring: Cleanup to improve modularity. The
4565 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
4566 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
4570 ----------------------------------------
4571 14 November 2012. Summary of changes for version 20121114:
4573 1) ACPICA Kernel-resident Subsystem:
4575 Implemented a performance enhancement for ACPI/AML Package objects. This
4576 change greatly increases the performance of Package objects within the
4577 interpreter. It changes the processing of reference counts for packages
4579 optimizing for the most common case where the package sub-objects are
4580 either Integers, Strings, or Buffers. Increases the overall performance
4582 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
4584 Chao Guan. ACPICA BZ 943.
4586 Implemented and deployed common macros to extract flag bits from resource
4587 descriptors. Improves readability and maintainability of the code. Fixes
4589 problem with the UART serial bus descriptor for the number of data bits
4590 flags (was incorrectly 2 bits, should be 3).
4592 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
4593 of the macros and changed the SETx macros to the style of (destination,
4594 source). Also added ACPI_CASTx companion macros. Lv Zheng.
4596 Example Code and Data Size: These are the sizes for the OS-independent
4597 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4598 debug version of the code includes the debug output trace mechanism and
4599 has a much larger code and data size.
4602 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4603 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4605 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4606 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4609 2) iASL Compiler/Disassembler and Tools:
4611 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
4612 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
4613 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
4615 Disassembler: Fixed a problem with external declaration generation. Fixes
4616 a problem where an incorrect pathname could be generated for an external
4617 declaration if the original reference to the object includes leading
4618 carats (^). ACPICA BZ 984.
4620 Debugger: Completed a major update for the Disassemble<method> command.
4621 This command was out-of-date and did not properly disassemble control
4622 methods that had any reasonable complexity. This fix brings the command
4624 to the same level as the rest of the disassembler. Adds one new file,
4625 dmdeferred.c, which is existing code that is now common with the main
4626 disassembler and the debugger disassemble command. ACPICA MZ 978.
4628 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
4629 Newer versions of Bison emit this prototype, so moved the prototype out
4631 the iASL header to where it is actually used in order to avoid a
4635 iASL/Tools: Standardized use of the stream I/O functions:
4636 1) Ensure check for I/O error after every fopen/fread/fwrite
4637 2) Ensure proper order of size/count arguments for fread/fwrite
4638 3) Use test of (Actual != Requested) after all fwrite, and most fread
4639 4) Standardize I/O error messages
4640 Improves reliability and maintainability of the code. Bob Moore, Lv
4644 Disassembler: Prevent duplicate External() statements. During generation
4645 of external statements, detect similar pathnames that are actually
4646 duplicates such as these:
4649 Remove all leading '\' characters from pathnames during the external
4650 statement generation so that duplicates will be detected and tossed.
4653 Tools: Replace low-level I/O with stream I/O functions. Replace
4654 open/read/write/close with the stream I/O equivalents
4655 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
4658 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
4659 name header so that AcpiXtract recognizes the output file/table.
4661 iASL: Remove obsolete -2 option flag. Originally intended to force the
4662 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
4663 and the entire concept is now obsolete.
4665 ----------------------------------------
4666 18 October 2012. Summary of changes for version 20121018:
4669 1) ACPICA Kernel-resident Subsystem:
4671 Updated support for the ACPI 5.0 MPST table. Fixes some problems
4672 introduced by late changes to the table as it was added to the ACPI 5.0
4673 specification. Includes header, disassembler, and data table compiler
4674 support as well as a new version of the MPST template.
4676 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
4677 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
4678 methods: _HID, _CID, and _UID.
4680 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
4681 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
4682 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
4683 names for their various drivers. Affects the AcpiGetObjectInfo external
4684 interface, and other internal interfaces as well.
4686 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
4687 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
4688 on machines that support non-aligned transfers. Optimizes for this case
4689 rather than using a strncpy. With assistance from Zheng Lv.
4691 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
4692 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
4694 Added a new debug print message for AML mutex objects that are force-
4695 released. At control method termination, any currently acquired mutex
4696 objects are force-released. Adds a new debug-only message for each one
4699 Audited/updated all ACPICA return macros and the function debug depth
4700 counter: 1) Ensure that all functions that use the various TRACE macros
4701 also use the appropriate ACPICA return macros. 2) Ensure that all normal
4702 return statements surround the return expression (value) with parens to
4703 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
4704 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
4706 Global source code changes/maintenance: All extra lines at the start and
4707 end of each source file have been removed for consistency. Also, within
4708 comments, all new sentences start with a single space instead of a double
4709 space, again for consistency across the code base.
4711 Example Code and Data Size: These are the sizes for the OS-independent
4712 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4713 debug version of the code includes the debug output trace mechanism and
4714 has a much larger code and data size.
4717 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4718 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4720 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4721 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4724 2) iASL Compiler/Disassembler and Tools:
4726 AcpiExec: Improved the algorithm used for memory leak/corruption
4727 detection. Added some intelligence to the code that maintains the global
4728 list of allocated memory. The list is now ordered by allocated memory
4729 address, significantly improving performance. When running AcpiExec on
4730 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
4731 on the platform and/or the environment. Note, this performance
4732 enhancement affects the AcpiExec utility only, not the kernel-resident
4735 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
4736 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
4737 incorrect table offset reported for invalid opcodes. Report the original
4738 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
4740 Disassembler: Enhanced the -vt option to emit the binary table data in
4741 hex format to assist with debugging.
4743 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
4744 size of file structure. Colin Ian King.
4746 ----------------------------------------
4747 13 September 2012. Summary of changes for version 20120913:
4750 1) ACPICA Kernel-resident Subsystem:
4752 ACPI 5.0: Added two new notify types for the Hardware Error Notification
4753 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
4757 Table Manager: Merged/removed duplicate code in the root table resize
4758 functions. One function is external, the other is internal. Lv Zheng,
4762 Makefiles: Completely removed the obsolete "Linux" makefiles under
4763 acpica/generate/linux. These makefiles are obsolete and have been
4766 the generic unix makefiles under acpica/generate/unix.
4768 Makefiles: Ensure that binary files always copied properly. Minor rule
4770 to ensure that the final binary output files are always copied up to the
4771 appropriate binary directory (bin32 or bin64.)
4773 Example Code and Data Size: These are the sizes for the OS-independent
4774 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4776 version of the code includes the debug output trace mechanism and has a
4778 larger code and data size.
4781 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4782 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4784 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4785 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4788 2) iASL Compiler/Disassembler and Tools:
4790 Disassembler: Fixed a possible fault during the disassembly of resource
4791 descriptors when a second parse is required because of the invocation of
4792 external control methods within the table. With assistance from
4793 adq@lidskialf.net. ACPICA BZ 976.
4795 iASL: Fixed a namepath optimization problem. An error can occur if the
4797 node that contains the namepath to be optimized does not have a parent
4799 that is a named object. This change fixes the problem.
4801 iASL: Fixed a regression where the AML file is not deleted on errors. The
4803 output file should be deleted if there are any errors during the
4806 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4808 iASL: Added a feature to automatically increase internal line buffer
4810 Via realloc(), automatically increase the internal line buffer sizes as
4811 necessary to support very long source code lines. The current version of
4813 preprocessor requires a buffer long enough to contain full source code
4815 This change increases the line buffer(s) if the input lines go beyond the
4816 current buffer size. This eliminates errors that occurred when a source
4818 line was longer than the buffer.
4820 iASL: Fixed a problem with constant folding in method declarations. The
4821 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4823 Type3 opcode was used.
4825 Debugger: Improved command help support. For incorrect argument count,
4827 full help for the command. For help command itself, allow an argument to
4830 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4831 errors during execution of the suite. Guan Chao.
4833 ----------------------------------------
4834 16 August 2012. Summary of changes for version 20120816:
4837 1) ACPICA Kernel-resident Subsystem:
4839 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4841 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4842 deprecated and will probably be removed from the ACPI specification.
4844 does not invoke them, and reportedly never will. The final nail in the
4846 is that the ACPI specification states that these methods must be run with
4847 interrupts off, which is not going to happen in a kernel interpreter.
4849 Linux has removed all use of the methods also. It was discovered that
4850 invoking these functions caused failures on some machines, probably
4852 they were never tested since Windows does not call them. Affects two
4854 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4857 Implemented support for complex bit-packed buffers returned from the _PLD
4858 (Physical Location of Device) predefined method. Adds a new external
4859 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4861 structure. Note: C Bitfields cannot be used for this type of predefined
4862 structure since the memory layout of individual bitfields is not defined
4864 the C language. In addition, there are endian concerns where a compiler
4866 change the bitfield ordering based on the machine type. The new ACPICA
4867 interface eliminates these issues, and should be called after _PLD is
4868 executed. ACPICA BZ 954.
4870 Implemented a change to allow a scope change to root (via "Scope (\)")
4872 execution of module-level ASL code (code that is executed at table load
4875 Added the Windows8/Server2012 string for the _OSI method. This change
4878 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4881 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4883 and CSRT (Core System Resource Table).
4885 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4886 names. This simplifies access to the buffers returned by these predefined
4887 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4889 GPE support: Removed an extraneous parameter from the various low-level
4890 internal GPE functions. Tang Feng.
4892 Removed the linux makefiles from the unix packages. The generate/linux
4893 makefiles are obsolete and have been removed from the unix tarball
4895 packages. The replacement makefiles are under generate/unix, and there is
4897 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4899 Updates for Unix makefiles:
4900 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4901 2) Update linker flags (move to end of command line) for AcpiExec
4905 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4906 utxface.c to improve modularity and reduce file size.
4908 Example Code and Data Size: These are the sizes for the OS-independent
4909 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4910 debug version of the code includes the debug output trace mechanism and
4912 much larger code and data size.
4915 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4916 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4918 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4919 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4922 2) iASL Compiler/Disassembler and Tools:
4924 iASL: Fixed a problem with constant folding for fixed-length constant
4925 expressions. The constant-folding code was not being invoked for constant
4926 expressions that allow the use of type 3/4/5 opcodes to generate
4928 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4930 in the generation of invalid AML bytecode. ACPICA BZ 970.
4932 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4933 apparently automatically emit some of the necessary externals. This
4935 handles these versions in order to eliminate generation warnings.
4937 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4939 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4941 within comments in the output file.
4943 Debugger: Fixed a regression with the "Threads" command where
4944 AE_BAD_PARAMETER was always returned.
4946 ----------------------------------------
4947 11 July 2012. Summary of changes for version 20120711:
4949 1) ACPICA Kernel-resident Subsystem:
4951 Fixed a possible fault in the return package object repair code. Fixes a
4952 problem that can occur when a lone package object is wrapped with an
4954 package object in order to force conformance to the ACPI specification.
4956 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4960 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4961 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4962 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4964 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4966 Intel and other vendors. (for Intel: ICH4-M and earlier)
4968 This change removes the code to disable/enable bus master arbitration
4970 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4972 resume problems on some machines. The change has been in use for over
4976 Implemented two new external interfaces to support host-directed dynamic
4978 table load and unload. They are intended to simplify the host
4980 of hot-plug support:
4981 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4982 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4984 See the ACPICA reference for additional details. Adds one new file,
4985 components/tables/tbxfload.c
4987 Implemented and deployed two new interfaces for errors and warnings that
4989 known to be caused by BIOS/firmware issues:
4990 AcpiBiosError: Prints "ACPI Firmware Error" message.
4991 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4992 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4994 and FADT errors. Additional deployment to be completed as appropriate in
4996 future. The associated conditional macros are ACPI_BIOS_ERROR and
4997 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
5002 Implicit notify support: ensure that no memory allocation occurs within a
5003 critical region. This fix moves a memory allocation outside of the time
5005 spinlock is held. Fixes issues on systems that do not allow this
5009 Split exception code utilities and tables into a new file,
5012 Example Code and Data Size: These are the sizes for the OS-independent
5013 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5015 version of the code includes the debug output trace mechanism and has a
5017 larger code and data size.
5020 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
5021 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
5023 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
5024 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
5027 2) iASL Compiler/Disassembler and Tools:
5029 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
5033 Debugger: Enhanced the "tables" command to emit additional information
5035 the current set of ACPI tables, including the owner ID and flags decode.
5037 Debugger: Reimplemented the "unload" command to use the new
5038 AcpiUnloadParentTable external interface. This command was disable
5040 due to need for an unload interface.
5042 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
5044 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
5046 ----------------------------------------
5047 20 June 2012. Summary of changes for version 20120620:
5050 1) ACPICA Kernel-resident Subsystem:
5052 Implemented support to expand the "implicit notify" feature to allow
5054 devices to be notified by a single GPE. This feature automatically
5056 runtime device notification in the absence of a BIOS-provided GPE control
5057 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
5059 provided by ACPICA for Windows compatibility, and is a workaround for
5062 code errors. See the description of the AcpiSetupGpeForWake interface in
5064 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
5066 Changed some comments and internal function names to simplify and ensure
5067 correctness of the Linux code translation. No functional changes.
5069 Example Code and Data Size: These are the sizes for the OS-independent
5070 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5072 version of the code includes the debug output trace mechanism and has a
5074 larger code and data size.
5077 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
5078 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
5080 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
5081 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
5084 2) iASL Compiler/Disassembler and Tools:
5086 Disassembler: Added support to emit short, commented descriptions for the
5088 predefined names in order to improve the readability of the disassembled
5089 output. ACPICA BZ 959. Changes include:
5090 1) Emit descriptions for all standard predefined names (_INI, _STA,
5093 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
5094 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
5097 AcpiSrc: Fixed several long-standing Linux code translation issues.
5099 descriptions in function headers are now translated properly to lower
5102 underscores. ACPICA BZ 961. Also fixes translation problems such as
5108 local_fADT -> local_FADT
5109 execute_oSI -> execute_OSI
5111 iASL: Fixed a problem where null bytes were inadvertently emitted into
5115 iASL: Added the existing debug options to the standard help screen. There
5117 no longer two different help screens. ACPICA BZ 957.
5119 AcpiHelp: Fixed some typos in the various predefined name descriptions.
5121 expand some of the descriptions where appropriate.
5123 iASL: Fixed the -ot option (display compile times/statistics). Was not
5125 properly for standard output; only worked for the debug file case.
5127 ----------------------------------------
5128 18 May 2012. Summary of changes for version 20120518:
5131 1) ACPICA Core Subsystem:
5133 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
5135 to block until asynchronous events such as notifies and GPEs have
5137 Within ACPICA, it is only called before a notify or GPE handler is
5138 removed/uninstalled. It also may be useful for the host OS within related
5139 drivers such as the Embedded Controller driver. See the ACPICA reference
5141 additional information. ACPICA BZ 868.
5143 ACPI Tables: Added a new error message for a possible overflow failure
5145 the conversion of FADT 32-bit legacy register addresses to internal
5148 bit GAS structure representation. The GAS has a one-byte "bit length"
5150 thus limiting the register length to 255 bits. ACPICA BZ 953.
5152 Example Code and Data Size: These are the sizes for the OS-independent
5153 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5155 version of the code includes the debug output trace mechanism and has a
5157 larger code and data size.
5160 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5161 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
5163 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
5164 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
5167 2) iASL Compiler/Disassembler and Tools:
5169 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
5171 This keyword was added late in the ACPI 5.0 release cycle and was not
5172 implemented until now.
5174 Disassembler: Added support for Operation Region externals. Adds missing
5175 support for operation regions that are defined in another table, and
5176 referenced locally via a Field or BankField ASL operator. Now generates
5178 correct External statement.
5180 Disassembler: Several additional fixes for the External() statement
5182 related to some ASL operators. Also, order the External() statements
5183 alphabetically in the disassembler output. Fixes the External()
5186 the Create* field, Alias, and Scope operators:
5187 1) Create* buffer field operators - fix type mismatch warning on
5189 2) Alias - implement missing External support
5190 3) Scope - fix to make sure all necessary externals are emitted.
5192 iASL: Improved pathname support. For include files, merge the prefix
5194 with the file pathname and eliminate unnecessary components. Convert
5195 backslashes in all pathnames to forward slashes, for readability. Include
5197 pathname changes affect both #include and Include() type operators.
5199 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
5201 of a valid line by inserting a newline and then returning the EOF during
5203 next call to GetNextLine. Prevents the line from being ignored due to EOF
5206 iASL: Implemented some changes to enhance the IDE support (-vi option.)
5208 and Warning messages are now correctly recognized for both the source
5210 browser and the global error and warning counts.
5212 ----------------------------------------
5213 20 April 2012. Summary of changes for version 20120420:
5216 1) ACPICA Core Subsystem:
5218 Implemented support for multiple notify handlers. This change adds
5221 allow multiple system and device notify handlers on Device, Thermal Zone,
5223 Processor objects. This can simplify the host OS notification
5225 Also re-worked and restructured the entire notify support code to
5227 handler installation, handler removal, notify event queuing, and notify
5228 dispatch to handler(s). Note: there can still only be two global notify
5229 handlers - one for system notifies and one for device notifies. There are
5231 changes to the existing handler install/remove interfaces. Lin Ming, Bob
5232 Moore, Rafael Wysocki.
5234 Fixed a regression in the package repair code where the object reference
5235 count was calculated incorrectly. Regression was introduced in the commit
5236 "Support to add Package wrappers".
5238 Fixed a couple possible memory leaks in the AML parser, in the error
5240 path. Jesper Juhl, Lin Ming.
5242 Example Code and Data Size: These are the sizes for the OS-independent
5243 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5244 debug version of the code includes the debug output trace mechanism and
5246 much larger code and data size.
5249 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5250 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5252 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5253 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
5256 2) iASL Compiler/Disassembler and Tools:
5258 iASL: Fixed a problem with the resource descriptor support where the
5260 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
5261 included in cumulative descriptor offset, resulting in incorrect values
5263 resource tags within resource descriptors appearing after a
5265 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
5267 iASL and Preprocessor: Implemented full support for the #line directive
5269 correctly track original source file line numbers through the .i
5271 output file - for error and warning messages.
5273 iASL: Expand the allowable byte constants for address space IDs.
5275 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
5276 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
5278 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
5280 iASL: Add option to completely disable the preprocessor (-Pn).
5282 iASL: Now emit all error/warning messages to standard error (stderr) by
5283 default (instead of the previous stdout).
5285 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
5287 for resource descriptor offset fix above. Update/cleanup error output
5288 routines. Enable and send iASL errors/warnings to an error logfile
5289 (error.txt). Send all other iASL output to a logfile (compiler.txt).
5291 several extraneous "unrecognized operator" messages.
5293 ----------------------------------------
5294 20 March 2012. Summary of changes for version 20120320:
5297 1) ACPICA Core Subsystem:
5299 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
5300 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
5302 does not execute these methods, and therefore these methods are often
5303 untested. It has been seen on some systems where the execution of these
5304 methods causes errors and also prevents the machine from entering S5. It
5306 therefore suggested that host operating systems do not execute these
5308 by default. In the future, perhaps these methods can be optionally
5310 based on the age of the system and/or what is the newest version of
5312 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
5314 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
5317 Fixed a problem where the length of the local/common FADT was set too
5319 The local FADT table length cannot be set to the common length until the
5320 original length has been examined. There is code that checks the table
5322 and sets various fields appropriately. This can affect older machines
5324 early FADT versions. For example, this can cause inadvertent writes to
5326 CST_CNT register. Julian Anastasov.
5328 Fixed a mapping issue related to a physical table override. Use the
5330 mapping mechanism for tables loaded via the physical override OSL
5332 This allows for early mapping before the virtual memory manager is
5334 Thomas Renninger, Bob Moore.
5336 Enhanced the automatic return-object repair code: Repair a common problem
5338 predefined methods that are defined to return a variable-length Package
5340 sub-objects. If there is only one sub-object, some BIOS ASL code
5342 simply returns the single object instead of a Package with one sub-
5344 This new support will repair this error by wrapping a Package object
5346 the original object, creating the correct and expected Package with one
5348 object. Names that can be repaired in this manner include: _ALR, _CSD,
5350 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
5353 Changed the exception code returned for invalid ACPI paths passed as
5354 parameters to external interfaces such as AcpiEvaluateObject. Was
5355 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
5357 Example Code and Data Size: These are the sizes for the OS-independent
5358 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5360 version of the code includes the debug output trace mechanism and has a
5362 larger code and data size.
5365 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5366 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5368 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5369 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5372 2) iASL Compiler/Disassembler and Tools:
5374 iASL: Added the infrastructure and initial implementation of a integrated
5376 like preprocessor. This will simplify BIOS development process by
5378 the need for a separate preprocessing step during builds. On Windows, it
5380 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
5381 features including full #define() macro support are still under
5383 These preprocessor directives are supported:
5396 In addition, these new command line options are supported:
5397 -D <symbol> Define symbol for preprocessor use
5398 -li Create preprocessed output file (*.i)
5399 -P Preprocess only and create preprocessor output file (*.i)
5401 Table Compiler: Fixed a problem where the equals operator within an
5403 did not work properly.
5405 Updated iASL to use the current versions of Bison/Flex. Updated the
5407 project file to invoke these tools from the standard location. ACPICA BZ
5410 Flex for Windows: V2.5.4
5411 Bison for Windows: V2.4.1
5413 ----------------------------------------
5414 15 February 2012. Summary of changes for version 20120215:
5417 1) ACPICA Core Subsystem:
5419 There have been some major changes to the sleep/wake support code, as
5420 described below (a - e).
5422 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
5423 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
5424 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
5426 time the _BFS method is called and the _WAK method is called. NOTE: all
5428 must update their wake/resume code or else sleep/wake will not work
5432 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
5434 method. Some machines require that the GPEs are enabled before the _WAK
5436 is executed. Thomas Renninger.
5438 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
5440 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
5442 determine whether the system is rebooting or resuming. Matthew Garrett.
5444 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
5446 match the ACPI specification requirement. Rafael Wysocki.
5448 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
5449 registers within the V5 FADT. This support adds two new files:
5450 hardware/hwesleep.c implements the support for the new registers. Moved
5452 sleep/wake external interfaces to hardware/hwxfsleep.c.
5455 Added a new OSL interface for ACPI table overrides,
5456 AcpiOsPhysicalTableOverride. This interface allows the host to override a
5457 table via a physical address, instead of the logical address required by
5458 AcpiOsTableOverride. This simplifies the host implementation. Initial
5459 implementation by Thomas Renninger. The ACPICA implementation creates a
5461 shared function for table overrides that attempts both a logical and a
5464 Expanded the OSL memory read/write interfaces to 64-bit data
5465 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
5466 transfer support for GAS register structures passed to AcpiRead and
5469 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
5471 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
5473 See the ACPICA reference for details. ACPICA BZ 942. This option removes
5475 10% of the code and 5% of the static data, and the following hardware
5477 features become unavailable:
5478 PM Event and Control registers
5479 SCI interrupt (and handler)
5481 General Purpose Events (GPEs)
5484 FACS table (Waking vectors and Global Lock)
5486 Updated the unix tarball directory structure to match the ACPICA git
5488 tree. This ensures that the generic unix makefiles work properly (in
5489 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
5492 Updated the return value of the _REV predefined method to integer value 5
5494 reflect ACPI 5.0 support.
5496 Moved the external ACPI PM timer interface prototypes to the public
5498 file where they belong.
5500 Example Code and Data Size: These are the sizes for the OS-independent
5501 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5503 version of the code includes the debug output trace mechanism and has a
5505 larger code and data size.
5508 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5509 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5511 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5512 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5515 2) iASL Compiler/Disassembler and Tools:
5517 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
5518 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
5519 incorrectly displayed.
5521 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
5524 ----------------------------------------
5525 11 January 2012. Summary of changes for version 20120111:
5528 1) ACPICA Core Subsystem:
5530 Implemented a new mechanism to allow host device drivers to check for
5532 range conflicts with ACPI Operation Regions. Both SystemMemory and
5534 address spaces are supported. A new external interface,
5535 AcpiCheckAddressRange,
5536 allows drivers to check an address range against the ACPI namespace. See
5538 ACPICA reference for additional details. Adds one new file,
5539 utilities/utaddress.c. Lin Ming, Bob Moore.
5541 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
5544 Status registers, update the ACPI 5.0 flags, and update internal data
5545 structures to handle an FADT larger than 256 bytes. The size of the ACPI
5549 Updated all ACPICA copyrights and signons to 2012. Added the 2012
5551 all module headers and signons, including the standard Linux header. This
5552 affects virtually every file in the ACPICA core subsystem, iASL compiler,
5554 all ACPICA utilities.
5556 Example Code and Data Size: These are the sizes for the OS-independent
5557 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5559 version of the code includes the debug output trace mechanism and has a
5561 larger code and data size.
5564 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5565 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5567 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5568 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5571 2) iASL Compiler/Disassembler and Tools:
5573 Disassembler: fixed a problem with the automatic resource tag generation
5574 support. Fixes a problem where the resource tags are inadvertently not
5575 constructed if the table being disassembled contains external references
5577 control methods. Moved the actual construction of the tags to after the
5579 namespace is constructed (after 2nd parse is invoked due to external
5581 method references.) ACPICA BZ 941.
5583 Table Compiler: Make all "generic" operators caseless. These are the
5585 like UINT8, String, etc. Making these caseless improves ease-of-use.
5589 ----------------------------------------
5590 23 November 2011. Summary of changes for version 20111123:
5592 0) ACPI 5.0 Support:
5594 This release contains full support for the ACPI 5.0 specification, as
5597 Reduced Hardware Support:
5598 -------------------------
5600 This support allows for ACPI systems without the usual ACPI hardware.
5602 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
5604 not attempt to initialize or use any of the usual ACPI hardware. Note,
5606 this flag is set, all of the following ACPI hardware is assumed to be not
5607 present and is not initialized or accessed:
5609 General Purpose Events (GPEs)
5610 Fixed Events (PM1a/PM1b and PM Control)
5611 Power Management Timer and Console Buttons (power/sleep)
5612 Real-time Clock Alarm
5614 System Control Interrupt (SCI)
5615 The FACS is assumed to be non-existent
5620 All new tables and updates to existing tables are fully supported in the
5621 ACPICA headers (for use by device drivers), the disassembler, and the
5623 Data Table Compiler. ACPI 5.0 defines these new tables:
5625 BGRT /* Boot Graphics Resource Table */
5626 DRTM /* Dynamic Root of Trust for Measurement table */
5627 FPDT /* Firmware Performance Data Table */
5628 GTDT /* Generic Timer Description Table */
5629 MPST /* Memory Power State Table */
5630 PCCT /* Platform Communications Channel Table */
5631 PMTT /* Platform Memory Topology Table */
5632 RASF /* RAS Feature table */
5634 Operation Regions/SpaceIDs:
5635 ---------------------------
5637 All new operation regions are fully supported by the iASL compiler, the
5638 disassembler, and the ACPICA runtime code (for dispatch to region
5640 The new operation region Space IDs are:
5645 Resource Descriptors:
5646 ---------------------
5648 All new ASL resource descriptors are fully supported by the iASL
5651 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
5653 all new predefined resource tags). New descriptors are:
5662 ASL/AML Operators, New and Modified:
5663 ------------------------------------
5665 One new operator is added, the Connection operator, which is used to
5667 a GeneralPurposeIo or GenericSerialBus resource descriptor with
5669 field objects within an operation region. Several new protocols are
5671 with the AccessAs operator. All are fully supported by the iASL compiler,
5672 disassembler, and runtime ACPICA AML interpreter:
5674 Connection // Declare Field Connection
5676 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
5677 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
5679 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
5680 RawDataBuffer // Data type for Vendor Data
5683 Predefined ASL/AML Objects:
5684 ---------------------------
5686 All new predefined objects/control-methods are supported by the iASL
5688 and the ACPICA runtime validation/repair (arguments and return values.)
5690 predefined names include the following:
5692 Standard Predefined Names (Objects or Control Methods):
5693 _AEI, _CLS, _CPC, _CWS, _DEP,
5694 _DLM, _EVT, _GCP, _CRT, _GWS,
5695 _HRV, _PRE, _PSE, _SRT, _SUB.
5697 Resource Tags (Names used to access individual fields within resource
5699 _DBT, _DPL, _DRS, _END, _FLC,
5700 _IOR, _LIN, _MOD, _PAR, _PHA,
5701 _PIN, _PPI, _POL, _RXL, _SLV,
5702 _SPE, _STB, _TXL, _VEN.
5704 ACPICA External Interfaces:
5705 ---------------------------
5707 Several new interfaces have been defined for use by ACPI-related device
5708 drivers and other host OS services:
5710 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
5712 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
5713 provided by the BIOS. They are intended to be used in conjunction with
5715 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
5716 mutual exclusion with the AML code/interpreter.
5718 AcpiGetEventResources: Returns the (formatted) resource descriptors as
5720 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
5722 resource descriptors associated with hardware-reduced platform events,
5724 to the AcpiGetCurrentResources interface.
5726 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
5727 operation regions, information about the Connection() object and any
5729 length information is passed to the region handler within the Context
5732 AcpiBufferToResource: This interface converts a raw AML buffer containing
5734 resource template or resource descriptor to the ACPI_RESOURCE internal
5736 suitable for use by device drivers. Can be used by an operation region
5738 to convert the Connection() buffer object into a ACPI_RESOURCE.
5740 Miscellaneous/Tools/TestSuites:
5741 -------------------------------
5743 Support for extended _HID names (Four alpha characters instead of three).
5744 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
5745 Support for ACPI 5.0 features in the ASLTS test suite.
5746 Fully updated documentation (ACPICA and iASL reference documents.)
5748 ACPI Table Definition Language:
5749 -------------------------------
5751 Support for this language was implemented and released as a subsystem of
5753 iASL compiler in 2010. (See the iASL compiler User Guide.)
5756 Non-ACPI 5.0 changes for this release:
5757 --------------------------------------
5759 1) ACPICA Core Subsystem:
5761 Fix a problem with operation region declarations where a failure can
5764 the region name and an argument that evaluates to an object (such as the
5765 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
5768 Do not abort an ACPI table load if an invalid space ID is found within.
5770 will be caught later if the offending method is executed. ACPICA BZ 925.
5772 Fixed an issue with the FFixedHW space ID where the ID was not always
5773 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
5775 Fixed a problem with the 32-bit generation of the unix-specific OSL
5776 (osunixxf.c). Lin Ming, ACPICA BZ 936.
5778 Several changes made to enable generation with the GCC 4.6 compiler.
5782 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
5784 field registers out-of-range.
5786 2) iASL Compiler/Disassembler and Tools:
5788 iASL: Implemented the __PATH__ operator, which returns the full pathname
5790 the current source file.
5792 AcpiHelp: Automatically display expanded keyword information for all ASL
5795 Debugger: Add "Template" command to disassemble/dump resource template
5798 Added a new master script to generate and execute the ASLTS test suite.
5799 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5801 iASL: Fix problem with listing generation during processing of the
5803 operator where AML listing was disabled until the entire Switch block was
5806 iASL: Improve support for semicolon statement terminators. Fix "invalid
5807 character" message for some cases when the semicolon is used. Semicolons
5809 now allowed after every <Term> grammar element. ACPICA BZ 927.
5811 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5814 Disassembler: Fix problem with disassembly of the DataTableRegion
5816 where an inadvertent "Unhandled deferred opcode" message could be
5819 3) Example Code and Data Size
5821 These are the sizes for the OS-independent acpica.lib produced by the
5822 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5823 includes the debug output trace mechanism and has a much larger code and
5828 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5829 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5831 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5832 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5834 ----------------------------------------
5835 22 September 2011. Summary of changes for version 20110922:
5839 Support for ACPI 5.0 in ACPICA has been underway for several months and
5841 be released at the same time that ACPI 5.0 is officially released.
5843 The ACPI 5.0 specification is on track for release in the next few
5846 1) ACPICA Core Subsystem:
5848 Fixed a problem where the maximum sleep time for the Sleep() operator was
5849 intended to be limited to two seconds, but was inadvertently limited to
5853 Linux and Unix makefiles: Added header file dependencies to ensure
5855 generation of ACPICA core code and utilities. Also simplified the
5857 considerably through the use of the vpath variable to specify search
5861 2) iASL Compiler/Disassembler and Tools:
5863 iASL: Implemented support to check the access length for all fields
5865 access named Resource Descriptor fields. For example, if a resource field
5867 defined to be two bits, a warning is issued if a CreateXxxxField() is
5869 with an incorrect bit length. This is implemented for all current
5871 descriptor names. ACPICA BZ 930.
5873 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5877 iASL: Fixed a couple of issues associated with variable-length package
5878 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5880 VAR_PACKAGE when these are used as a package length. 2) Allow the
5882 opcode (in addition to PACKAGE) when validating object types for
5886 iASL: Emit statistics for all output files (instead of just the ASL input
5888 AML output). Includes listings, hex files, etc.
5890 iASL: Added -G option to the table compiler to allow the compilation of
5892 ACPI tables. The only part of a table that is required is the standard
5897 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5899 which also adds correct 64-bit support. Also, now all output filenames
5901 completely lower case.
5903 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5904 loading table files. A warning is issued for any such tables. The only
5905 exception is an FADT. This also fixes a possible fault when attempting to
5907 non-AML tables. ACPICA BZ 932.
5909 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5911 missing table terminator could cause a fault when using the -p option.
5913 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5916 3) Example Code and Data Size
5918 These are the sizes for the OS-independent acpica.lib produced by the
5919 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5920 includes the debug output trace mechanism and has a much larger code and
5924 Previous Release (VC 9.0):
5925 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5926 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5927 Current Release (VC 9.0):
5928 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5929 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5932 ----------------------------------------
5933 23 June 2011. Summary of changes for version 20110623:
5935 1) ACPI CA Core Subsystem:
5937 Updated the predefined name repair mechanism to not attempt repair of a
5939 return object if a _PSS object is present. We can only sort the _TSS
5941 package if there is no _PSS within the same scope. This is because if
5944 present, the ACPI specification dictates that the _TSS Power Dissipation
5946 is to be ignored, and therefore some BIOSs leave garbage values in the
5948 Power field(s). In this case, it is best to just return the _TSS package
5950 is. Reported by, and fixed with assistance from Fenghua Yu.
5952 Added an option to globally disable the control method return value
5954 and repair. This runtime option can be used to disable return value
5957 this is causing a problem on a particular machine. Also added an option
5959 AcpiExec (-dr) to set this disable flag.
5961 All makefiles and project files: Major changes to improve generation of
5963 tools. ACPICA BZ 912:
5964 Reduce default optimization levels to improve compatibility
5965 For Linux, add strict-aliasing=0 for gcc 4
5966 Cleanup and simplify use of command line defines
5967 Cleanup multithread library support
5968 Improve usage messages
5970 Linux-specific header: update handling of THREAD_ID and pthread. For the
5972 bit case, improve casting to eliminate possible warnings, especially with
5976 Example Code and Data Size: These are the sizes for the OS-independent
5977 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5979 version of the code includes the debug output trace mechanism and has a
5981 larger code and data size.
5983 Previous Release (VC 9.0):
5984 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5985 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5986 Current Release (VC 9.0):
5987 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5988 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5990 2) iASL Compiler/Disassembler and Tools:
5992 With this release, a new utility named "acpihelp" has been added to the
5994 package. This utility summarizes the ACPI specification chapters for the
5996 and AML languages. It generates under Linux/Unix as well as Windows, and
5997 provides the following functionality:
5998 Find/display ASL operator(s) -- with description and syntax.
5999 Find/display ASL keyword(s) -- with exact spelling and descriptions.
6000 Find/display ACPI predefined name(s) -- with description, number
6001 of arguments, and the return value data type.
6002 Find/display AML opcode name(s) -- with opcode, arguments, and
6004 Decode/display AML opcode -- with opcode name, arguments, and
6007 Service Layers: Make multi-thread support configurable. Conditionally
6009 the multi-thread support so that threading libraries will not be linked
6012 necessary. The only tool that requires multi-thread support is AcpiExec.
6014 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
6016 Bison appear to want the interface to yyerror to be a const char * (or at
6017 least this is a problem when generating iASL on some systems.) ACPICA BZ
6021 Tools: Fix for systems where O_BINARY is not defined. Only used for
6023 versions of the tools.
6025 ----------------------------------------
6026 27 May 2011. Summary of changes for version 20110527:
6028 1) ACPI CA Core Subsystem:
6030 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
6032 signature. Now, only allow SSDT, OEMx, and a null signature. History:
6033 1) Originally, we checked the table signature for "SSDT" or "PSDT".
6034 (PSDT is now obsolete.)
6035 2) We added support for OEMx tables, signature "OEM" plus a fourth
6036 "don't care" character.
6037 3) Valid tables were encountered with a null signature, so we just
6038 gave up on validating the signature, (05/2008).
6039 4) We encountered non-AML tables such as the MADT, which caused
6040 interpreter errors and kernel faults. So now, we once again allow
6041 only SSDT, OEMx, and now, also a null signature. (05/2011).
6043 Added the missing _TDL predefined name to the global name list in order
6045 enable validation. Affects both the core ACPICA code and the iASL
6048 Example Code and Data Size: These are the sizes for the OS-independent
6049 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
6051 version of the code includes the debug output trace mechanism and has a
6053 larger code and data size.
6055 Previous Release (VC 9.0):
6056 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
6057 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
6058 Current Release (VC 9.0):
6059 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
6060 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
6062 2) iASL Compiler/Disassembler and Tools:
6064 Debugger/AcpiExec: Implemented support for "complex" method arguments on
6066 debugger command line. This adds support beyond simple integers --
6068 Strings, Buffers, and Packages. Includes support for nested packages.
6069 Increased the default command line buffer size to accommodate these
6071 See the ACPICA reference for details and syntax. ACPICA BZ 917.
6073 Debugger/AcpiExec: Implemented support for "default" method arguments for
6075 Execute/Debug command. Now, the debugger will always invoke a control
6077 with the required number of arguments -- even if the command line
6079 none or insufficient arguments. It uses default integer values for any
6081 arguments. Also fixes a bug where only six method arguments maximum were
6082 supported instead of the required seven.
6084 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
6086 also return status in order to prevent buffer overruns. See the ACPICA
6087 reference for details and syntax. ACPICA BZ 921
6089 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
6090 makefiles to simplify support for the two different but similar parser
6091 generators, bison and yacc.
6093 Updated the generic unix makefile for gcc 4. The default gcc version is
6095 expected to be 4 or greater, since options specific to gcc 4 are used.
6097 ----------------------------------------
6098 13 April 2011. Summary of changes for version 20110413:
6100 1) ACPI CA Core Subsystem:
6102 Implemented support to execute a so-called "orphan" _REG method under the
6104 device. This change will force the execution of a _REG method underneath
6107 device even if there is no corresponding operation region of type
6108 EmbeddedControl. Fixes a problem seen on some machines and apparently is
6109 compatible with Windows behavior. ACPICA BZ 875.
6111 Added more predefined methods that are eligible for automatic NULL
6113 element removal. This change adds another group of predefined names to
6116 of names that can be repaired by having NULL package elements dynamically
6117 removed. This group are those methods that return a single variable-
6119 package containing simple data types such as integers, buffers, strings.
6121 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
6124 and _TZD. ACPICA BZ 914.
6126 Split and segregated all internal global lock functions to a new file,
6129 Updated internal address SpaceID for DataTable regions. Moved this
6132 id in preparation for ACPI 5.0 changes that will include some new space
6135 change should not affect user/host code.
6137 Example Code and Data Size: These are the sizes for the OS-independent
6139 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
6141 the code includes the debug output trace mechanism and has a much larger
6146 Previous Release (VC 9.0):
6147 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
6148 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
6149 Current Release (VC 9.0):
6150 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
6151 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
6153 2) iASL Compiler/Disassembler and Tools:
6155 iASL/DTC: Major update for new grammar features. Allow generic data types
6157 custom ACPI tables. Field names are now optional. Any line can be split
6159 multiple lines using the continuation char (\). Large buffers now use
6161 continuation character(s) and no colon on the continuation lines. See the
6163 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
6166 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
6168 Since the parser stuffs a "zero" as the return value for these statements
6171 the underlying AML grammar), they were seen as "return with value" by the
6173 semantic checking. They are now seen correctly as "null" return
6176 iASL: Check if a_REG declaration has a corresponding Operation Region.
6178 check for each _REG to ensure that there is in fact a corresponding
6180 region declaration in the same scope. If not, the _REG method is not very
6182 since it probably won't be executed. ACPICA BZ 915.
6184 iASL/DTC: Finish support for expression evaluation. Added a new
6187 that implements c-style operator precedence and parenthesization. ACPICA
6191 Disassembler/DTC: Remove support for () and <> style comments in data
6194 that DTC has full expression support, we don't want to have comment
6197 start with a parentheses or a less-than symbol. Now, only the standard /*
6200 comments are supported, as well as the bracket [] comments.
6202 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
6204 headers in the acpidump file. Update the header validation to support
6206 tables. Problem introduced in previous AcpiXtract version in the change
6208 support "wrong checksum" error messages emitted by acpidump utility.
6210 iASL: Add a * option to generate all template files (as a synonym for
6214 "iasl -T *" or "iasl -T ALL".
6216 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
6218 abort the compiler on "fatal" errors, simply should abort the current
6220 This allows multiple compiles with a single (possibly wildcard) compiler
6223 ----------------------------------------
6224 16 March 2011. Summary of changes for version 20110316:
6226 1) ACPI CA Core Subsystem:
6228 Fixed a problem caused by a _PRW method appearing at the namespace root
6230 during the setup of wake GPEs. A fault could occur if a _PRW directly
6233 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
6235 Implemented support for "spurious" Global Lock interrupts. On some
6237 global lock interrupt can occur without the pending flag being set. Upon
6240 interrupt, we now ensure that a thread is actually waiting for the lock
6242 signaling GL availability. Rafael Wysocki, Bob Moore.
6244 Example Code and Data Size: These are the sizes for the OS-independent
6246 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
6248 the code includes the debug output trace mechanism and has a much larger
6253 Previous Release (VC 9.0):
6254 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6255 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6256 Current Release (VC 9.0):
6257 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
6258 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
6260 2) iASL Compiler/Disassembler and Tools:
6262 Implemented full support for the "SLIC" ACPI table. Includes support in
6264 header files, disassembler, table compiler, and template generator. Bob
6268 AcpiXtract: Correctly handle embedded comments and messages from
6270 Apparently some or all versions of acpidump will occasionally emit a
6273 "Wrong checksum", etc., into the dump file. This was causing problems for
6274 AcpiXtract. ACPICA BZ 905.
6276 iASL: Fix the Linux makefile by removing an inadvertent double file
6280 AcpiExec: Update installation of operation region handlers. Install one
6282 for a user-defined address space. This is used by the ASL test suite
6285 ----------------------------------------
6286 11 February 2011. Summary of changes for version 20110211:
6288 1) ACPI CA Core Subsystem:
6290 Added a mechanism to defer _REG methods for some early-installed
6292 Most user handlers should be installed before call to
6293 AcpiEnableSubsystem.
6294 However, Event handlers and region handlers should be installed after
6295 AcpiInitializeObjects. Override handlers for the "default" regions should
6297 installed early, however. This change executes all _REG methods for the
6298 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
6299 chicken/egg issues between them. ACPICA BZ 848.
6301 Implemented an optimization for GPE detection. This optimization will
6303 ignore GPE registers that contain no enabled GPEs -- there is no need to
6304 read the register since this information is available internally. This
6305 becomes more important on machines with a large GPE space. ACPICA
6307 884. Lin Ming. Suggestion from Joe Liu.
6309 Removed all use of the highly unreliable FADT revision field. The
6311 number in the FADT has been found to be completely unreliable and cannot
6313 trusted. Only the actual table length can be used to infer the version.
6315 change updates the ACPICA core and the disassembler so that both no
6317 even look at the FADT version and instead depend solely upon the FADT
6320 Fix an unresolved name issue for the no-debug and no-error-message source
6321 generation cases. The _AcpiModuleName was left undefined in these cases,
6323 it is actually needed as a parameter to some interfaces. Define
6324 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
6326 Split several large files (makefiles and project files updated)
6327 utglobal.c -> utdecode.c
6328 dbcomds.c -> dbmethod.c dbnames.c
6329 dsopcode.c -> dsargs.c dscontrol.c
6330 dsload.c -> dsload2.c
6331 aslanalyze.c -> aslbtypes.c aslwalks.c
6333 Example Code and Data Size: These are the sizes for the OS-independent
6334 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
6335 debug version of the code includes the debug output trace mechanism and
6337 a much larger code and data size.
6339 Previous Release (VC 9.0):
6340 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6341 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6342 Current Release (VC 9.0):
6343 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6344 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6346 2) iASL Compiler/Disassembler and Tools:
6348 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
6349 These are useful C-style macros with the standard definitions. ACPICA
6352 iASL/DTC: Added support for integer expressions and labels. Support for
6354 expressions for all integer fields in all ACPI tables. Support for labels
6356 "generic" portions of tables such as UEFI. See the iASL reference manual.
6358 Debugger: Added a command to display the status of global handlers. The
6359 "handlers" command will display op region, fixed event, and miscellaneous
6360 global handlers. installation status -- and for op regions, whether
6362 or user-installed handler will be used.
6364 iASL: Warn if reserved method incorrectly returns a value. Many
6366 names are defined such that they do not return a value. If implemented as
6368 method, issue a warning if such a name explicitly returns a value. ACPICA
6371 iASL: Added detection of GPE method name conflicts. Detects a conflict
6373 there are two GPE methods of the form _Lxy and _Exy in the same scope.
6375 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
6377 iASL/DTC: Fixed a couple input scanner issues with comments and line
6378 numbers. Comment remover could get confused and miss a comment ending.
6380 a problem with line counter maintenance.
6382 iASL/DTC: Reduced the severity of some errors from fatal to error. There
6384 no need to abort on simple errors within a field definition.
6386 Debugger: Simplified the output of the help command. All help output now
6388 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
6390 ----------------------------------------
6391 12 January 2011. Summary of changes for version 20110112:
6393 1) ACPI CA Core Subsystem:
6395 Fixed a race condition between method execution and namespace walks that
6397 possibly cause a fault. The problem was apparently introduced in version
6398 20100528 as a result of a performance optimization that reduces the
6401 namespace walks upon method exit by using the delete_namespace_subtree
6402 function instead of the delete_namespace_by_owner function used
6404 Bug is a missing namespace lock in the delete_namespace_subtree function.
6405 dana.myers@oracle.com
6407 Fixed several issues and a possible fault with the automatic "serialized"
6408 method support. History: This support changes a method to "serialized" on
6410 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
6411 possibility that it cannot handle reentrancy. This fix repairs a couple
6413 issues seen in the field, especially on machines with many cores:
6415 1) Delete method children only upon the exit of the last thread,
6416 so as to not delete objects out from under other running threads
6417 (and possibly causing a fault.)
6418 2) Set the "serialized" bit for the method only upon the exit of the
6419 Last thread, so as to not cause deadlock when running threads
6421 3) Cleanup the use of the AML "MethodFlags" and internal method flags
6422 so that there is no longer any confusion between the two.
6424 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
6426 Debugger: Now lock the namespace for duration of a namespace dump.
6428 issues if the namespace is changing dynamically underneath the debugger.
6429 Especially affects temporary namespace nodes, since the debugger displays
6432 Updated the ordering of include files. The ACPICA headers should appear
6433 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
6435 any necessary compiler-specific defines, etc. Affects the ACPI-related
6439 Updated all ACPICA copyrights and signons to 2011. Added the 2011
6441 to all module headers and signons, including the Linux header. This
6443 virtually every file in the ACPICA core subsystem, iASL compiler, and all
6446 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
6447 project files for VC++ 6.0 are now obsolete. New project files can be
6449 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
6452 Example Code and Data Size: These are the sizes for the OS-independent
6453 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
6454 debug version of the code includes the debug output trace mechanism and
6456 much larger code and data size.
6458 Previous Release (VC 6.0):
6459 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6460 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6461 Current Release (VC 9.0):
6462 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6463 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6465 2) iASL Compiler/Disassembler and Tools:
6467 iASL: Added generic data types to the Data Table compiler. Add "generic"
6469 types such as UINT32, String, Unicode, etc., to simplify the generation
6471 platform-defined tables such as UEFI. Lin Ming.
6473 iASL: Added listing support for the Data Table Compiler. Adds listing
6475 (-l) to display actual binary output for each line of input code.
6477 ----------------------------------------
6478 09 December 2010. Summary of changes for version 20101209:
6480 1) ACPI CA Core Subsystem:
6482 Completed the major overhaul of the GPE support code that was begun in
6484 2010. Major features include: removal of _PRW execution in ACPICA (host
6485 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
6486 changes to existing interfaces, simplification of GPE handler operation,
6488 a handful of new interfaces:
6494 One new file, evxfgpe.c to consolidate all external GPE interfaces.
6496 See the ACPICA Programmer Reference for full details and programming
6497 information. See the new section 4.4 "General Purpose Event (GPE)
6499 for a full overview, and section 8.7 "ACPI General Purpose Event
6501 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
6503 Bob Moore, Rafael Wysocki.
6505 Implemented a new GPE feature for Windows compatibility, the "Implicit
6507 GPE Notify". This feature will automatically issue a Notify(2) on a
6509 when a Wake GPE is received if there is no corresponding GPE method or
6510 handler. ACPICA BZ 870.
6512 Fixed a problem with the Scope() operator during table parse and load
6514 During load phase (table load or method execution), the scope operator
6516 not enter the target into the namespace. Instead, it should open a new
6518 at the target location. Linux BZ 19462, ACPICA BZ 882.
6520 Example Code and Data Size: These are the sizes for the OS-independent
6521 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6522 debug version of the code includes the debug output trace mechanism and
6524 much larger code and data size.
6527 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6528 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6530 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6531 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6533 2) iASL Compiler/Disassembler and Tools:
6535 iASL: Relax the alphanumeric restriction on _CID strings. These strings
6537 "bus-specific" per the ACPI specification, and therefore any characters
6539 acceptable. The only checks that can be performed are for a null string
6541 perhaps for a leading asterisk. ACPICA BZ 886.
6543 iASL: Fixed a problem where a syntax error that caused a premature EOF
6544 condition on the source file emitted a very confusing error message. The
6545 premature EOF is now detected correctly. ACPICA BZ 891.
6547 Disassembler: Decode the AccessSize within a Generic Address Structure
6549 access, word access, etc.) Note, this field does not allow arbitrary bit
6550 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
6552 New: AcpiNames utility - Example namespace dump utility. Shows an example
6554 ACPICA configuration for a minimal namespace dump utility. Uses table and
6555 namespace managers, but no AML interpreter. Does not add any
6557 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
6558 partition and configure ACPICA. ACPICA BZ 883.
6560 AML Debugger: Increased the debugger buffer size for method return
6562 Was 4K, increased to 16K. Also enhanced error messages for debugger
6564 execution, including the buffer overflow case.
6566 ----------------------------------------
6567 13 October 2010. Summary of changes for version 20101013:
6569 1) ACPI CA Core Subsystem:
6571 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
6573 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
6574 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
6576 Changed the type of the predefined namespace object _TZ from ThermalZone
6578 Device. This was found to be confusing to the host software that
6580 the various thermal zones, since _TZ is not really a ThermalZone.
6583 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
6586 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
6587 string is "Windows 2006 SP2".
6589 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
6591 code automatically repairs _HID-related strings, this type of code is no
6592 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
6595 Example Code and Data Size: These are the sizes for the OS-independent
6596 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6597 debug version of the code includes the debug output trace mechanism and
6599 much larger code and data size.
6602 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6603 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6605 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6606 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6608 2) iASL Compiler/Disassembler and Tools:
6610 iASL: Implemented additional compile-time validation for _HID strings.
6612 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
6615 the string must be exactly seven or eight characters. For both _HID and
6617 strings, all characters must be alphanumeric. ACPICA BZ 874.
6619 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
6620 descriptors that are mostly or all zeros, with the expectation that they
6622 be filled in at runtime. iASL now allows this as long as there is a
6624 tag" (name) associated with the descriptor, which gives the ASL a handle
6625 needed to modify the descriptor. ACPICA BZ 873.
6627 Added single-thread support to the generic Unix application OSL.
6629 for iASL support, this change removes the use of semaphores in the
6631 threaded ACPICA tools/applications - increasing performance. The
6632 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
6633 option. ACPICA BZ 879.
6635 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
6637 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
6639 iASL: Moved all compiler messages to a new file, aslmessages.h.
6641 ----------------------------------------
6642 15 September 2010. Summary of changes for version 20100915:
6644 1) ACPI CA Core Subsystem:
6646 Removed the AcpiOsDerivePciId OSL interface. The various host
6648 of this function were not OS-dependent and are now obsolete and can be
6649 removed from all host OSLs. This function has been replaced by
6650 AcpiHwDerivePciId, which is now part of the ACPICA core code.
6651 AcpiHwDerivePciId has been implemented without recursion. Adds one new
6652 module, hwpci.c. ACPICA BZ 857.
6654 Implemented a dynamic repair for _HID and _CID strings. The following
6655 problems are now repaired at runtime: 1) Remove a leading asterisk in the
6656 string, and 2) the entire string is uppercased. Both repairs are in
6657 accordance with the ACPI specification and will simplify host driver
6661 The ACPI_THREAD_ID type is no longer configurable, internally it is now
6662 always UINT64. This simplifies the ACPICA code, especially any printf
6664 UINT64 is the only common data type for all thread_id types across all
6665 operating systems. It is now up to the host OSL to cast the native
6667 type to UINT64 before returning the value to ACPICA (via
6669 Lin Ming, Bob Moore.
6671 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
6673 keyword is not standard across compilers, and this type allows inline to
6675 configured on a per-compiler basis. Lin Ming.
6677 Made the system global AcpiGbl_SystemAwakeAndRunning publically
6679 Added an extern for this boolean in acpixf.h. Some hosts utilize this
6681 during suspend/restore operations. ACPICA BZ 869.
6683 All code that implements error/warning messages with the "ACPI:" prefix
6685 been moved to a new module, utxferror.c.
6687 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
6689 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
6691 Example Code and Data Size: These are the sizes for the OS-independent
6692 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6693 debug version of the code includes the debug output trace mechanism and
6695 much larger code and data size.
6698 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6699 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6701 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6702 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6704 2) iASL Compiler/Disassembler and Tools:
6706 iASL/Disassembler: Write ACPI errors to stderr instead of the output
6708 This keeps the output files free of random error messages that may
6710 from within the namespace/interpreter code. Used this opportunity to
6712 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
6713 866. Lin Ming, Bob Moore.
6715 Tools: update some printfs for ansi warnings on size_t. Handle width
6717 of size_t on 32-bit versus 64-bit generations. Lin Ming.
6719 ----------------------------------------
6720 06 August 2010. Summary of changes for version 20100806:
6722 1) ACPI CA Core Subsystem:
6724 Designed and implemented a new host interface to the _OSI support code.
6726 will allow the host to dynamically add or remove multiple _OSI strings,
6728 well as install an optional handler that is called for each _OSI
6730 Also added a new AML debugger command, 'osi' to display and modify the
6732 _OSI string table, and test support in the AcpiExec utility. See the
6734 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
6736 AcpiInstallInterface - Add an _OSI string.
6737 AcpiRemoveInterface - Delete an _OSI string.
6738 AcpiInstallInterfaceHandler - Install optional _OSI handler.
6740 AcpiOsValidateInterface - no longer used.
6742 source/components/utilities/utosi.c
6744 Re-introduced the support to enable multi-byte transfers for Embedded
6745 Controller (EC) operation regions. A reported problem was found to be a
6747 in the host OS, not in the multi-byte support. Previously, the maximum
6749 size passed to the EC operation region handler was a single byte. There
6751 often EC Fields larger than one byte that need to be transferred, and it
6753 useful for the EC driver to lock these as a single transaction. This
6755 enables single transfers larger than 8 bits. This effectively changes the
6756 access to the EC space from ByteAcc to AnyAcc, and will probably require
6757 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
6759 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
6761 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
6762 prototype in acpiosxf.h had the output value pointer as a (void *).
6763 It should be a (UINT64 *). This may affect some host OSL code.
6765 Fixed a couple problems with the recently modified Linux makefiles for
6767 and AcpiExec. These new makefiles place the generated object files in the
6768 local directory so that there can be no collisions between the files that
6770 shared between them that are compiled with different options.
6772 Example Code and Data Size: These are the sizes for the OS-independent
6773 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6774 debug version of the code includes the debug output trace mechanism and
6776 much larger code and data size.
6779 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6780 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6782 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6783 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6785 2) iASL Compiler/Disassembler and Tools:
6787 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
6789 namespace from and disassemble an entire group of AML files. Useful for
6790 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
6792 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
6794 iASL: Allow multiple invocations of -e option. This change allows
6796 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6800 ----------------------------------------
6801 02 July 2010. Summary of changes for version 20100702:
6803 1) ACPI CA Core Subsystem:
6805 Implemented several updates to the recently added GPE reference count
6806 support. The model for "wake" GPEs is changing to give the host OS
6808 control of these GPEs. Eventually, the ACPICA core will not execute any
6810 methods, since the host already must execute them. Also, additional
6812 were made to help ensure that the reference counts are kept in proper
6813 synchronization with reality. Rafael J. Wysocki.
6815 1) Ensure that GPEs are not enabled twice during initialization.
6816 2) Ensure that GPE enable masks stay in sync with the reference count.
6817 3) Do not inadvertently enable GPEs when writing GPE registers.
6818 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6819 interface. This interface will set or clear individual GPEs for wakeup.
6820 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6822 are now used for "runtime" GPEs only.
6824 Changed the behavior of the GPE install/remove handler interfaces. The
6827 no longer disabled during this process, as it was found to cause problems
6829 some machines. Rafael J. Wysocki.
6831 Reverted a change introduced in version 20100528 to enable Embedded
6832 Controller multi-byte transfers. This change was found to cause problems
6834 Index Fields and possibly Bank Fields. It will be reintroduced when these
6835 problems have been resolved.
6837 Fixed a problem with references to Alias objects within Package Objects.
6839 reference to an Alias within the definition of a Package was not always
6840 resolved properly. Aliases to objects like Processors, Thermal zones,
6842 were resolved to the actual object instead of a reference to the object
6845 should be. Package objects are only allowed to contain integer, string,
6846 buffer, package, and reference objects. Redhat bugzilla 608648.
6848 Example Code and Data Size: These are the sizes for the OS-independent
6849 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6850 debug version of the code includes the debug output trace mechanism and
6852 much larger code and data size.
6855 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6856 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6858 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6859 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6861 2) iASL Compiler/Disassembler and Tools:
6863 iASL: Implemented a new compiler subsystem to allow definition and
6864 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6866 are called "ACPI Data Tables", and the new compiler is the "Data Table
6867 Compiler". This compiler is intended to simplify the existing error-prone
6868 process of creating these tables for the BIOS, as well as allowing the
6869 disassembly, modification, recompilation, and override of existing ACPI
6871 tables. See the iASL User Guide for detailed information.
6873 iASL: Implemented a new Template Generator option in support of the new
6875 Table Compiler. This option will create examples of all known ACPI tables
6876 that can be used as the basis for table development. See the iASL
6877 documentation and the -T option.
6879 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6882 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6883 object files in the local directory so that there can be no collisions
6884 between the shared files between them that are generated with different
6887 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6889 the #define __APPLE__ to enable this support.
6891 ----------------------------------------
6892 28 May 2010. Summary of changes for version 20100528:
6894 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6895 available at www.acpi.info. This is primarily an errata release.
6897 1) ACPI CA Core Subsystem:
6899 Undefined ACPI tables: We are looking for the definitions for the
6901 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6903 Implemented support to enable multi-byte transfers for Embedded
6905 (EC) operation regions. Previously, the maximum data size passed to the
6907 operation region handler was a single byte. There are often EC Fields
6909 than one byte that need to be transferred, and it is useful for the EC
6911 to lock these as a single transaction. This change enables single
6913 larger than 8 bits. This effectively changes the access to the EC space
6915 ByteAcc to AnyAcc, and will probably require changes to the host OS
6917 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6919 transfers. Alexey Starikovskiy, Lin Ming
6921 Implemented a performance enhancement for namespace search and access.
6923 change enhances the performance of namespace searches and walks by adding
6925 backpointer to the parent in each namespace node. On large namespaces,
6927 change can improve overall ACPI performance by up to 9X. Adding a pointer
6929 each namespace node increases the overall size of the internal namespace
6931 about 5%, since each namespace entry usually consists of both a namespace
6932 node and an ACPI operand object. However, this is the first growth of the
6933 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6935 Implemented a performance optimization that reduces the number of
6937 walks. On control method exit, only walk the namespace if the method is
6939 to have created namespace objects outside of its local scope. Previously,
6941 entire namespace was traversed on each control method exit. This change
6943 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6946 Added support to truncate I/O addresses to 16 bits for Windows
6948 Some ASL code has been seen in the field that inadvertently has bits set
6949 above bit 15. This feature is optional and is enabled if the BIOS
6951 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6954 Added support to limit the maximum time for the ASL Sleep() operator. To
6955 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6956 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6959 Added run-time validation support for the _WDG and_WED Microsoft
6961 methods. These objects are defined by "Windows Instrumentation", and are
6963 part of the ACPI spec. ACPICA BZ 860.
6965 Expanded all statistic counters used during namespace and device
6966 initialization from 16 to 32 bits in order to support very large
6969 Replaced all instances of %d in printf format specifiers with %u since
6971 all integers in ACPICA are unsigned.
6973 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6977 Example Code and Data Size: These are the sizes for the OS-independent
6978 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6979 debug version of the code includes the debug output trace mechanism and
6981 much larger code and data size.
6984 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6985 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6987 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6988 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6990 2) iASL Compiler/Disassembler and Tools:
6992 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6993 methods. These objects are defined by "Windows Instrumentation", and are
6995 part of the ACPI spec. ACPICA BZ 860.
6997 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6998 option will disable the tracking mechanism, which improves performance
7001 AcpiExec: Restructured the command line options into -d (disable) and -e
7004 ----------------------------------------
7005 28 April 2010. Summary of changes for version 20100428:
7007 1) ACPI CA Core Subsystem:
7009 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
7010 including FADT-based and GPE Block Devices, execute any _PRW methods in
7012 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
7013 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
7014 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
7015 Devices. Provides compatibility with other ACPI implementations. Two new
7016 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
7019 Fixed a regression introduced in version 20100331 within the table
7021 where initial table loading could fail. This was introduced in the fix
7023 AcpiReallocateRootTable. Also, renamed some of fields in the table
7025 data structures to clarify their meaning and use.
7027 Fixed a possible allocation overrun during internal object copy in
7028 AcpiUtCopySimpleObject. The original code did not correctly handle the
7030 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
7033 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
7034 possible access beyond end-of-allocation. Also, now fully validate
7036 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
7038 Example Code and Data Size: These are the sizes for the OS-independent
7039 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7040 debug version of the code includes the debug output trace mechanism and
7042 much larger code and data size.
7045 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
7046 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
7048 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
7049 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
7051 2) iASL Compiler/Disassembler and Tools:
7053 iASL: Implemented Min/Max/Len/Gran validation for address resource
7054 descriptors. This change implements validation for the address fields
7056 are common to all address-type resource descriptors. These checks are
7057 implemented: Checks for valid Min/Max, length within the Min/Max window,
7058 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
7060 table 6-40 in the ACPI 4.0a specification. Also split the large
7062 and aslrestype2.c files into five new files. ACPICA BZ 840.
7064 iASL: Added support for the _Wxx predefined names. This support was
7066 and these names were not recognized by the compiler as valid predefined
7067 names. ACPICA BZ 851.
7069 iASL: Added an error for all predefined names that are defined to return
7071 value and thus must be implemented as Control Methods. These include all
7073 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
7074 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
7076 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
7078 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
7080 dynamically loaded via the Load() operator. Also cleaned up output for
7083 ta and -tc options. ACPICA BZ 853.
7085 Tests: Added a new file with examples of extended iASL error checking.
7086 Demonstrates the advanced error checking ability of the iASL compiler.
7087 Available at tests/misc/badcode.asl.
7089 ----------------------------------------
7090 31 March 2010. Summary of changes for version 20100331:
7092 1) ACPI CA Core Subsystem:
7094 Completed a major update for the GPE support in order to improve support
7096 shared GPEs and to simplify both host OS and ACPICA code. Added a
7098 count mechanism to support shared GPEs that require multiple device
7100 Several external interfaces have changed. One external interface has been
7101 removed. One new external interface was added. Most of the GPE external
7102 interfaces now use the GPE spinlock instead of the events mutex (and the
7103 Flags parameter for many GPE interfaces has been removed.) See the
7105 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
7107 Wysocki. ACPICA BZ 831.
7110 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
7116 Implemented write support for DataTable operation regions. These regions
7118 defined via the DataTableRegion() operator. Previously, only read support
7120 implemented. The ACPI specification allows DataTableRegions to be
7124 Implemented a new subsystem option to force a copy of the DSDT to local
7125 memory. Optionally copy the entire DSDT to local memory (instead of
7127 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
7129 the original DSDT, creating the need for this option. Default is FALSE,
7133 Implemented detection of a corrupted or replaced DSDT. This change adds
7134 support to detect a DSDT that has been corrupted and/or replaced from
7136 the OS (by firmware). This is typically catastrophic for the system, but
7138 been seen on some machines. Once this problem has been detected, the DSDT
7139 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
7141 Fixed two problems with AcpiReallocateRootTable during the root table
7143 When copying the root table to the new allocation, the length used was
7144 incorrect. The new size was used instead of the current table size,
7146 too much data was copied. Also, the count of available slots for ACPI
7148 was not set correctly. Alexey Starikovskiy, Bob Moore.
7150 Example Code and Data Size: These are the sizes for the OS-independent
7151 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7152 debug version of the code includes the debug output trace mechanism and
7154 much larger code and data size.
7157 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
7158 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
7160 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
7161 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
7163 2) iASL Compiler/Disassembler and Tools:
7165 iASL: Implement limited typechecking for values returned from predefined
7166 control methods. The type of any returned static (unnamed) object is now
7167 validated. For example, Return(1). ACPICA BZ 786.
7169 iASL: Fixed a predefined name object verification regression. Fixes a
7171 introduced in version 20100304. An error is incorrectly generated if a
7172 predefined name is declared as a static named object with a value defined
7173 using the keywords "Zero", "One", or "Ones". Lin Ming.
7175 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
7177 reducing the requested registry access rights. ACPICA BZ 842.
7179 Disassembler: fixed a possible fault when generating External()
7181 Introduced in commit ae7d6fd: Properly handle externals with parent-
7183 (carat). Fixes a string length allocation calculation. Lin Ming.
7185 ----------------------------------------
7186 04 March 2010. Summary of changes for version 20100304:
7188 1) ACPI CA Core Subsystem:
7190 Fixed a possible problem with the AML Mutex handling function
7191 AcpiExReleaseMutex where the function could fault under the very rare
7192 condition when the interpreter has blocked, the interpreter lock is
7194 the interpreter is then reentered via the same thread, and attempts to
7195 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
7199 Implemented additional configuration support for the AML "Debug Object".
7200 Output from the debug object can now be enabled via a global variable,
7201 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
7203 This debug output is now available in the release version of ACPICA
7205 of just the debug version. Also, the entire debug output module can now
7207 configured out of the ACPICA build if desired. One new file added,
7208 executer/exdebug.c. Lin Ming, Bob Moore.
7210 Added header support for the ACPI MCHI table (Management Controller Host
7211 Interface Table). This table was added in ACPI 4.0, but the defining
7213 has only recently become available.
7215 Standardized output of integer values for ACPICA warnings/errors. Always
7217 0x prefix for hex output, always use %u for unsigned integer decimal
7219 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
7221 invocations.) These invocations were converted from the original
7222 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
7224 Example Code and Data Size: These are the sizes for the OS-independent
7225 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7226 debug version of the code includes the debug output trace mechanism and
7228 much larger code and data size.
7231 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
7232 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
7234 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
7235 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
7237 2) iASL Compiler/Disassembler and Tools:
7239 iASL: Implemented typechecking support for static (non-control method)
7240 predefined named objects that are declared with the Name() operator. For
7241 example, the type of this object is now validated to be of type Integer:
7242 Name(_BBN, 1). This change migrates the compiler to using the core
7244 name table instead of maintaining a local version. Added a new file,
7245 aslpredef.c. ACPICA BZ 832.
7247 Disassembler: Added support for the ACPI 4.0 MCHI table.
7249 ----------------------------------------
7250 21 January 2010. Summary of changes for version 20100121:
7252 1) ACPI CA Core Subsystem:
7254 Added the 2010 copyright to all module headers and signons. This affects
7255 virtually every file in the ACPICA core subsystem, the iASL compiler, the
7256 tools/utilities, and the test suites.
7258 Implemented a change to the AcpiGetDevices interface to eliminate
7260 invocations of the _STA method. In the case where a specific _HID is
7261 requested, do not run _STA until a _HID match is found. This eliminates
7262 potentially dozens of _STA calls during a search for a particular
7264 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
7266 Implemented an additional repair for predefined method return values.
7268 to repair unexpected NULL elements within returned Package objects.
7271 Integer of value zero, a NULL String, or a zero-length Buffer as
7273 ACPICA BZ 818. Lin Ming, Bob Moore.
7275 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
7277 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
7279 64-bit AML integers). It is now obsolete and this change removes it from
7281 ACPICA code base, replaced by UINT64. The original typedef has been
7283 for now for compatibility with existing device driver code. ACPICA BZ
7286 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
7288 the parse tree object.
7290 Added additional warning options for the gcc-4 generation. Updated the
7292 accordingly. This includes some code restructuring to eliminate
7294 code, elimination of some gotos, elimination of unused return values,
7296 additional casting, and removal of redundant declarations.
7298 Example Code and Data Size: These are the sizes for the OS-independent
7299 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7300 debug version of the code includes the debug output trace mechanism and
7302 much larger code and data size.
7305 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
7306 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
7308 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
7309 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
7311 2) iASL Compiler/Disassembler and Tools:
7313 No functional changes for this release.
7315 ----------------------------------------
7316 14 December 2009. Summary of changes for version 20091214:
7318 1) ACPI CA Core Subsystem:
7320 Enhanced automatic data type conversions for predefined name repairs.
7322 change expands the automatic repairs/conversions for predefined name
7324 values to make Integers, Strings, and Buffers fully interchangeable.
7327 Buffer can be converted to a Package of Integers if necessary. The
7329 module was completely restructured. Lin Ming, Bob Moore.
7331 Implemented automatic removal of null package elements during predefined
7333 repairs. This change will automatically remove embedded and trailing NULL
7334 package elements from returned package objects that are defined to
7337 variable number of sub-packages. The driver is then presented with a
7339 with no null elements to deal with. ACPICA BZ 819.
7341 Implemented a repair for the predefined _FDE and _GTM names. The expected
7342 return value for both names is a Buffer of 5 DWORDs. This repair fixes
7344 possible problems (both seen in the field), where a package of integers
7346 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
7349 Implemented additional module-level code support. This change will
7351 execute module-level code that is not at the root of the namespace (under
7353 Device object, etc.). Now executes the code within the current scope
7355 of the root. ACPICA BZ 762. Lin Ming.
7357 Fixed possible mutex acquisition errors when running _REG methods. Fixes
7359 problem where mutex errors can occur when running a _REG method that is
7361 the same scope as a method-defined operation region or an operation
7363 under a module-level IF block. This type of code is rare, so the problem
7365 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
7367 Fixed a possible memory leak during module-level code execution. An
7369 could be leaked for each block of executed module-level code if the
7370 interpreter slack mode is enabled This change deletes any implicitly
7372 object from the module-level code block. Lin Ming.
7374 Removed messages for successful predefined repair(s). The repair
7376 was considered too wordy. Now, messages are only unconditionally emitted
7378 the return object cannot be repaired. Existing messages for successful
7379 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
7382 Example Code and Data Size: These are the sizes for the OS-independent
7383 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7384 debug version of the code includes the debug output trace mechanism and
7386 much larger code and data size.
7389 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7390 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7392 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
7393 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
7395 2) iASL Compiler/Disassembler and Tools:
7397 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
7399 were no longer automatically removed at the termination of the compile.
7401 acpiexec: Implemented the -f option to specify default region fill value.
7402 This option specifies the value used to initialize buffers that simulate
7403 operation regions. Default value is zero. Useful for debugging problems
7405 depend on a specific initial value for a region or field.
7407 ----------------------------------------
7408 12 November 2009. Summary of changes for version 20091112:
7410 1) ACPI CA Core Subsystem:
7412 Implemented a post-order callback to AcpiWalkNamespace. The existing
7413 interface only has a pre-order callback. This change adds an additional
7414 parameter for a post-order callback which will be more useful for bus
7416 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
7418 Modified the behavior of the operation region memory mapping cache for
7419 SystemMemory. Ensure that the memory mappings created for operation
7421 do not cross 4K page boundaries. Crossing a page boundary while mapping
7422 regions can cause kernel warnings on some hosts if the pages have
7424 attributes. Such regions are probably BIOS bugs, and this is the
7426 Linux BZ 14445. Lin Ming.
7428 Implemented an automatic repair for predefined methods that must return
7429 sorted lists. This change will repair (by sorting) packages returned by
7431 _PSS, and _TSS. Drivers can now assume that the packages are correctly
7433 and do not contain NULL package elements. Adds one new file,
7434 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
7436 Fixed a possible fault during predefined name validation if a return
7438 object contains NULL elements. Also adds a warning if a NULL element is
7439 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
7441 include repair or removal of all such NULL elements where possible.
7443 Implemented additional module-level executable AML code support. This
7445 will execute module-level code that is not at the root of the namespace
7446 (under a Device object, etc.) at table load time. Module-level executable
7448 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
7450 Implemented a new internal function to create Integer objects. This
7452 simplifies miscellaneous object creation code. ACPICA BZ 823.
7454 Reduced the severity of predefined repair messages, Warning to Info.
7456 the object was successfully repaired, a warning is too severe. Reduced to
7458 info message for now. These messages may eventually be changed to debug-
7462 Example Code and Data Size: These are the sizes for the OS-independent
7463 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7464 debug version of the code includes the debug output trace mechanism and
7466 much larger code and data size.
7469 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7470 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7472 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7473 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7475 2) iASL Compiler/Disassembler and Tools:
7477 iASL: Implemented Switch() with While(1) so that Break works correctly.
7479 change correctly implements the Switch operator with a surrounding
7481 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
7483 iASL: Added a message if a package initializer list is shorter than
7485 length. Adds a new remark for a Package() declaration if an initializer
7487 exists, but is shorter than the declared length of the package. Although
7488 technically legal, this is probably a coding error and it is seen in the
7489 field. ACPICA BZ 815. Lin Ming, Bob Moore.
7491 iASL: Fixed a problem where the compiler could fault after the maximum
7493 of errors was reached (200).
7495 acpixtract: Fixed a possible warning for pointer cast if the compiler
7497 level set very high.
7499 ----------------------------------------
7500 13 October 2009. Summary of changes for version 20091013:
7502 1) ACPI CA Core Subsystem:
7504 Fixed a problem where an Operation Region _REG method could be executed
7506 than once. If a custom address space handler is installed by the host
7508 the "initialize operation regions" phase of the ACPICA initialization,
7510 _REG methods for that address space could be executed twice. This change
7511 fixes the problem. ACPICA BZ 427. Lin Ming.
7513 Fixed a possible memory leak for the Scope() ASL operator. When the exact
7514 invocation of "Scope(\)" is executed (change scope to root), one internal
7515 operand object was leaked. Lin Ming.
7517 Implemented a run-time repair for the _MAT predefined method. If the _MAT
7518 return value is defined as a Field object in the AML, and the field
7519 size is less than or equal to the default width of an integer (32 or
7521 can incorrectly return an Integer instead of a Buffer. ACPICA now
7522 automatically repairs this problem. ACPICA BZ 810.
7524 Implemented a run-time repair for the _BIF and _BIX predefined methods.
7526 "OEM Information" field is often incorrectly returned as an Integer with
7527 value zero if the field is not supported by the platform. This is due to
7529 ambiguity in the ACPI specification. The field should always be a string.
7530 ACPICA now automatically repairs this problem by returning a NULL string
7531 within the returned Package. ACPICA BZ 807.
7533 Example Code and Data Size: These are the sizes for the OS-independent
7534 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7535 debug version of the code includes the debug output trace mechanism and
7537 much larger code and data size.
7540 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7541 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7543 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7544 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7546 2) iASL Compiler/Disassembler and Tools:
7548 Disassembler: Fixed a problem where references to external symbols that
7549 contained one or more parent-prefixes (carats) were not handled
7551 possibly causing a fault. ACPICA BZ 806. Lin Ming.
7553 Disassembler: Restructured the code so that all functions that handle
7554 external symbols are in a single module. One new file is added,
7557 AML Debugger: Added a max count argument for the Batch command (which
7558 executes multiple predefined methods within the namespace.)
7560 iASL: Updated the compiler documentation (User Reference.) Available at
7561 http://www.acpica.org/documentation/. ACPICA BZ 750.
7563 AcpiXtract: Updated for Lint and other formatting changes. Close all open
7566 ----------------------------------------
7567 03 September 2009. Summary of changes for version 20090903:
7569 1) ACPI CA Core Subsystem:
7571 For Windows Vista compatibility, added the automatic execution of an _INI
7572 method located at the namespace root (\_INI). This method is executed at
7573 table load time. This support is in addition to the automatic execution
7575 \_SB._INI. Lin Ming.
7577 Fixed a possible memory leak in the interpreter for AML package objects
7579 the package initializer list is longer than the defined size of the
7581 This apparently can only happen if the BIOS changes the package size on
7583 fly (seen in a _PSS object), as ASL compilers do not allow this. The
7584 interpreter will truncate the package to the defined size (and issue an
7586 message), but previously could leave the extra objects undeleted if they
7588 pre-created during the argument processing (such is the case if the
7590 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
7592 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
7593 This has been reported in the field. Previously, ACPICA would zero out
7595 buffer/string. Now, the operation is treated as a noop. Provides Windows
7596 compatibility. ACPICA BZ 803. Lin Ming.
7598 Removed an extraneous error message for ASL constructs of the form
7599 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
7601 are seen in many BIOSs and are once again treated as NOOPs and no error
7603 emitted when they are encountered. ACPICA BZ 785.
7605 Fixed an extraneous warning message if a _DSM reserved method returns a
7606 Package object. _DSM can return any type of object, so validation on the
7607 return type cannot be performed. ACPICA BZ 802.
7609 Example Code and Data Size: These are the sizes for the OS-independent
7610 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7611 debug version of the code includes the debug output trace mechanism and
7613 much larger code and data size.
7616 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7617 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7619 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7620 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7622 2) iASL Compiler/Disassembler and Tools:
7624 iASL: Fixed a problem with the use of the Alias operator and Resource
7625 Templates. The correct alias is now constructed and no error is emitted.
7628 iASL: Implemented the -I option to specify additional search directories
7630 include files. Allows multiple additional search paths for include files.
7631 Directories are searched in the order specified on the command line
7633 the local directory is searched.) ACPICA BZ 800.
7635 iASL: Fixed a problem where the full pathname for include files was not
7636 emitted for warnings/errors. This caused the IDE support to not work
7637 properly. ACPICA BZ 765.
7639 iASL: Implemented the -@ option to specify a Windows-style response file
7640 containing additional command line options. ACPICA BZ 801.
7642 AcpiExec: Added support to load multiple AML files simultaneously (such
7645 DSDT and multiple SSDTs). Also added support for wildcards within the AML
7646 pathname. These features allow all machine tables to be easily loaded and
7647 debugged together. ACPICA BZ 804.
7649 Disassembler: Added missing support for disassembly of HEST table Error
7653 ----------------------------------------
7654 30 July 2009. Summary of changes for version 20090730:
7656 The ACPI 4.0 implementation for ACPICA is complete with this release.
7658 1) ACPI CA Core Subsystem:
7660 ACPI 4.0: Added header file support for all new and changed ACPI tables.
7661 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
7663 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
7665 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
7667 have been some ACPI 4.0 changes to other existing tables. Split the large
7668 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
7670 ACPI 4.0: Implemented predefined name validation for all new names. There
7672 31 new names in ACPI 4.0. The predefined validation module was split into
7674 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
7676 Implemented support for so-called "module-level executable code". This is
7677 executable AML code that exists outside of any control method and is
7679 to be executed at table load time. Although illegal since ACPI 2.0, this
7681 of code still exists and is apparently still being created. Blocks of
7683 code are now detected and executed as intended. Currently, the code
7685 must exist under either an If, Else, or While construct; these are the
7686 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
7688 Implemented an automatic dynamic repair for predefined names that return
7689 nested Package objects. This applies to predefined names that are defined
7691 return a variable-length Package of sub-packages. If the number of sub-
7692 packages is one, BIOS code is occasionally seen that creates a simple
7694 package with no sub-packages. This code attempts to fix the problem by
7695 wrapping a new package object around the existing package. These methods
7697 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
7701 Fixed a regression introduced in 20090625 for the AcpiGetDevices
7703 The _HID/_CID matching was broken and no longer matched IDs correctly.
7707 Fixed a problem with AcpiReset where the reset would silently fail if the
7708 register was one of the protected I/O ports. AcpiReset now bypasses the
7710 validation mechanism. This may eventually be driven into the
7714 Fixed a regression related to the recent update of the AcpiRead/Write
7715 interfaces. A sleep/suspend could fail if the optional PM2 Control
7717 does not exist during an attempt to write the Bus Master Arbitration bit.
7718 (However, some hosts already delete the code that writes this bit, and
7720 code may in fact be obsolete at this date.) ACPICA BZ 799.
7722 Fixed a problem where AcpiTerminate could fault if inadvertently called
7724 in succession. ACPICA BZ 795.
7726 Example Code and Data Size: These are the sizes for the OS-independent
7727 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7728 debug version of the code includes the debug output trace mechanism and
7730 much larger code and data size.
7733 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7734 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7736 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7737 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7739 2) iASL Compiler/Disassembler and Tools:
7741 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
7742 changes to existing tables. ACPICA BZ 775.
7744 ----------------------------------------
7745 25 June 2009. Summary of changes for version 20090625:
7747 The ACPI 4.0 Specification was released on June 16 and is available at
7748 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
7749 continue for the next few releases.
7751 1) ACPI CA Core Subsystem:
7753 ACPI 4.0: Implemented interpreter support for the IPMI operation region
7754 address space. Includes support for bi-directional data buffers and an
7756 address space handler (to be installed by an IPMI device driver.) ACPICA
7760 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
7762 support in both the header files and the disassembler.
7764 Completed a major update for the AcpiGetObjectInfo external interface.
7766 - Support for variable, unlimited length HID, UID, and CID strings.
7767 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
7769 - Call the _SxW power methods on behalf of a device object.
7770 - Determine if a device is a PCI root bridge.
7771 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
7772 These changes will require an update to all callers of this interface.
7774 the updated ACPICA Programmer Reference for details. One new source file
7776 been added - utilities/utids.c. ACPICA BZ 368, 780.
7778 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
7779 transfers. The Value parameter has been extended from 32 bits to 64 bits
7781 order to support new ACPI 4.0 tables. These changes will require an
7784 all callers of these interfaces. See the ACPICA Programmer Reference for
7785 details. ACPICA BZ 768.
7787 Fixed several problems with AcpiAttachData. The handler was not invoked
7789 the host node was deleted. The data sub-object was not automatically
7791 when the host node was deleted. The interface to the handler had an
7793 parameter, this was removed. ACPICA BZ 778.
7795 Enhanced the function that dumps ACPI table headers. All non-printable
7796 characters in the string fields are now replaced with '?' (Signature,
7798 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7799 these fields are occasionally seen in the field. ACPICA BZ 788.
7801 Fixed a problem with predefined method repair code where the code that
7802 attempts to repair/convert an object of incorrect type is only executed
7804 the first time the predefined method is called. The mechanism that
7806 warnings on subsequent calls was interfering with the repair mechanism.
7809 Fixed a possible memory leak in the predefined validation/repair code
7812 buffer is automatically converted to an expected string object.
7814 Removed obsolete 16-bit files from the distribution and from the current
7816 tree head. ACPICA BZ 776.
7818 Example Code and Data Size: These are the sizes for the OS-independent
7819 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7820 debug version of the code includes the debug output trace mechanism and
7822 much larger code and data size.
7825 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7826 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7828 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7829 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7831 2) iASL Compiler/Disassembler and Tools:
7833 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7834 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7836 ACPI 4.0: iASL - implemented compile-time validation support for all new
7837 predefined names and control methods (31 total). ACPICA BZ 769.
7839 ----------------------------------------
7840 21 May 2009. Summary of changes for version 20090521:
7842 1) ACPI CA Core Subsystem:
7844 Disabled the preservation of the SCI enable bit in the PM1 control
7846 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7849 a "preserved" bit - "OSPM always preserves this bit position", section
7850 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7851 because the bit needs to be explicitly set by the OS as a workaround. No
7852 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7853 attempts to preserve this bit.
7855 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7856 incorrectly formed _PRT package could cause a fault. Added validation to
7857 ensure that each package element is actually a sub-package.
7859 Implemented a new interface to install or override a single control
7861 AcpiInstallMethod. This interface is useful when debugging in order to
7863 an existing method or to install a missing method without having to
7865 the entire ACPI table. See the ACPICA Programmer Reference for use and
7866 examples. Lin Ming, Bob Moore.
7868 Fixed several reference count issues with the DdbHandle object that is
7869 created from a Load or LoadTable operator. Prevent premature deletion of
7871 object. Also, mark the object as invalid once the table has been
7873 This is needed because the handle itself may not be deleted after the
7875 unload, depending on whether it has been stored in a named object by the
7878 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7879 mutexes of the same sync level are acquired but then not released in
7881 opposite order, the internally maintained Current Sync Level becomes
7883 and can cause subsequent execution errors. ACPICA BZ 471.
7885 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7886 specification has been changed to make the SyncLevel for mutex objects
7888 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7890 same as the current sync level. This makes more sense than the previous
7892 (SyncLevel less than or equal). This change updates the code to match the
7895 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7897 (local) cache must be locked during all cache object deletions. Andrew
7900 Updated the Load operator to use operation region interfaces. This
7902 direct memory mapping with region access calls. Now, all region accesses
7904 through the installed region handler as they should.
7906 Simplified and optimized the NsGetNextNode function. Reduced parameter
7908 and reduced code for this frequently used function.
7910 Example Code and Data Size: These are the sizes for the OS-independent
7911 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7912 debug version of the code includes the debug output trace mechanism and
7914 much larger code and data size.
7917 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7918 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7920 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7921 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7923 2) iASL Compiler/Disassembler and Tools:
7925 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7927 with sub-table disassembly and handling invalid sub-tables. Attempt
7929 after an invalid sub-table ID.
7931 ----------------------------------------
7932 22 April 2009. Summary of changes for version 20090422:
7934 1) ACPI CA Core Subsystem:
7936 Fixed a compatibility issue with the recently released I/O port
7938 mechanism. For windows compatibility, 1) On a port protection violation,
7939 simply ignore the request and do not return an exception (allow the
7941 method to continue execution.) 2) If only part of the request overlaps a
7942 protected port, read/write the individual ports that are not protected.
7946 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7948 breaks into the AML debugger if the debugger is present. This matches the
7949 ACPI-defined behavior.
7951 Fixed several possible warnings related to the use of the configurable
7952 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7953 pointer with no warnings. Also fixes several warnings in printf-like
7954 statements for the 64-bit build when the type is configured as a pointer.
7957 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7959 warning options.) Examples include printf formats, aliasing, unused
7961 missing prototypes, missing switch default statements, use of non-ANSI
7962 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7964 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7966 Example Code and Data Size: These are the sizes for the OS-independent
7967 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7968 debug version of the code includes the debug output trace mechanism and
7970 much larger code and data size.
7973 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7974 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7976 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7977 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7979 2) iASL Compiler/Disassembler and Tools:
7981 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7986 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7988 correctly digest Windows/DOS formatted files (with CR/LF).
7990 iASL: Added a new option for "quiet mode" (-va) that produces only the
7991 compilation summary, not individual errors and warnings. Useful for large
7994 AcpiExec: Implemented a new option (-z) to enable a forced
7996 timeout that can be used to detect hang conditions during execution of
7998 code (includes both internal semaphores and AML-defined mutexes and
8001 Added new makefiles for the generation of acpica in a generic unix-like
8002 environment. These makefiles are intended to generate the acpica tools
8004 utilities from the original acpica git source tree structure.
8006 Test Suites: Updated and cleaned up the documentation files. Updated the
8007 copyrights to 2009, affecting all source files. Use the new version of
8009 with quiet mode. Increased the number of available semaphores in the
8011 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
8013 an alternate implementation of the semaphore timeout to allow aslts to
8014 execute fully on Cygwin.
8016 ----------------------------------------
8017 20 March 2009. Summary of changes for version 20090320:
8019 1) ACPI CA Core Subsystem:
8021 Fixed a possible race condition between AcpiWalkNamespace and dynamic
8023 unloads. Added a reader/writer locking mechanism to allow multiple
8025 namespace walks (readers), but block a dynamic table unload until it can
8027 exclusive write access to the namespace. This fixes a problem where a
8029 unload could (possibly catastrophically) delete the portion of the
8031 that is currently being examined by a walk. Adds a new file, utlock.c,
8033 implements the reader/writer lock mechanism. ACPICA BZ 749.
8035 Fixed a regression introduced in version 20090220 where a change to the
8037 handling could cause the ACPICA subsystem to access non-existent I/O
8040 Modified the handling of FADT register and table (FACS/DSDT) addresses.
8042 FADT can contain both 32-bit and 64-bit versions of these addresses.
8043 Previously, the 64-bit versions were favored, meaning that if both 32 and
8045 versions were valid, but not equal, the 64-bit version was used. This was
8046 found to cause some machines to fail. Now, in this case, the 32-bit
8048 is used instead. This now matches the Windows behavior.
8050 Implemented a new mechanism to protect certain I/O ports. Provides
8052 compatibility and protects the standard PC I/O ports from access via AML
8053 code. Adds a new file, hwvalid.c
8055 Fixed a possible extraneous warning message from the FADT support. The
8056 message warns of a 32/64 length mismatch between the legacy and GAS
8057 definitions for a register.
8059 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
8061 made obsolete by the port protection mechanism above. It was previously
8063 to validate the entire address range of an operation region, which could
8065 incorrect if the range included illegal ports, but fields within the
8066 operation region did not actually access those ports. Validation is now
8067 performed on a per-field basis instead of the entire region.
8069 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
8070 Ignored bits must be "preserved" according to the ACPI spec. Usually,
8072 means a read/modify/write when writing to the register. However, for
8074 registers, writing a one means clear the event. Writing a zero means
8076 the event (do not clear.) This behavior is clarified in the ACPI 4.0
8078 and the ACPICA code now simply always writes a zero to the ignored bit.
8080 Modified the handling of ignored bits for the PM1 A/B Control Registers.
8082 per the ACPI specification, for the control registers, preserve
8083 (read/modify/write) all bits that are defined as either reserved or
8086 Updated the handling of write-only bits in the PM1 A/B Control Registers.
8087 When reading the register, zero the write-only bits as per the ACPI spec.
8088 ACPICA BZ 443. Lin Ming.
8090 Removed "Linux" from the list of supported _OSI strings. Linux no longer
8091 wants to reply true to this request. The Windows strings are the only
8093 through the AML that are tested and known to work properly.
8096 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
8097 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
8099 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
8100 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
8102 2) iASL Compiler/Disassembler and Tools:
8104 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
8108 ----------------------------------------
8109 20 February 2009. Summary of changes for version 20090220:
8111 1) ACPI CA Core Subsystem:
8113 Optimized the ACPI register locking. Removed locking for reads from the
8115 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
8117 not required when reading the single-bit registers. The
8118 AcpiGetRegisterUnlocked function is no longer needed and has been
8120 This will improve performance for reads on these registers. ACPICA BZ
8123 Fixed the parameter validation for AcpiRead/Write. Now return
8124 AE_BAD_PARAMETER if the input register pointer is null, and
8127 the register has an address of zero. Previously, these cases simply
8129 AE_OK. For optional registers such as PM1B status/enable/control, the
8131 should check for a valid register address before calling. ACPICA BZ 748.
8133 Renamed the external ACPI bit register access functions. Renamed
8134 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
8135 functions. The new names are AcpiReadBitRegister and
8136 AcpiWriteBitRegister.
8137 Also, restructured the code for these functions by simplifying the code
8139 and condensing duplicate code to reduce code size.
8141 Added new functions to transparently handle the possibly split PM1 A/B
8142 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
8144 now handle the split registers for PM1 Status, Enable, and Control.
8149 Added a function to handle the PM1 control registers,
8150 AcpiHwWritePm1Control.
8151 This function writes both of the PM1 control registers (A/B). These
8153 are different than the PM1 A/B status and enable registers in that
8155 values can be written to the A/B registers. Most notably, the SLP_TYP
8157 can be different, as per the values returned from the _Sx predefined
8160 Removed an extra register write within AcpiHwClearAcpiStatus. This
8162 was writing an optional PM1B status register twice. The existing call to
8164 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
8166 register. ACPICA BZ 751.
8168 Split out the PM1 Status registers from the FADT. Added new globals for
8170 registers (A/B), similar to the way the PM1 Enable registers are handled.
8171 Instead of overloading the FADT Event Register blocks. This makes the
8173 clearer and less prone to error.
8175 Fixed the warning message for when the platform contains too many ACPI
8177 for the default size of the global root table data structure. The
8179 for the truncation value was incorrect.
8181 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
8182 obsolete macro, since it is now a simple reference to ->common.type.
8184 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
8186 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
8187 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
8188 simply SLEEP_TYPE. ACPICA BZ 754.
8190 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
8191 function is only needed on 64-bit host operating systems and is thus not
8192 included for 32-bit hosts.
8194 Debug output: print the input and result for invocations of the _OSI
8196 control method via the ACPI_LV_INFO debug level. Also, reduced some of
8198 verbosity of this debug level. Len Brown.
8200 Example Code and Data Size: These are the sizes for the OS-independent
8201 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8202 debug version of the code includes the debug output trace mechanism and
8204 much larger code and data size.
8207 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
8208 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
8210 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
8211 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
8213 2) iASL Compiler/Disassembler and Tools:
8215 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
8216 various legal performance profiles.
8218 ----------------------------------------
8219 23 January 2009. Summary of changes for version 20090123:
8221 1) ACPI CA Core Subsystem:
8223 Added the 2009 copyright to all module headers and signons. This affects
8224 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8225 the tools/utilities.
8227 Implemented a change to allow the host to override any ACPI table,
8229 dynamically loaded tables. Previously, only the DSDT could be replaced by
8231 host. With this change, the AcpiOsTableOverride interface is called for
8233 table found in the RSDT/XSDT during ACPICA initialization, and also
8235 a table is dynamically loaded via the AML Load operator.
8237 Updated FADT flag definitions, especially the Boot Architecture flags.
8239 Debugger: For the Find command, automatically pad the input ACPI name
8241 underscores if the name is shorter than 4 characters. This enables a
8243 with the actual namespace entry which is itself padded with underscores.
8245 Example Code and Data Size: These are the sizes for the OS-independent
8246 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8247 debug version of the code includes the debug output trace mechanism and
8249 much larger code and data size.
8252 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
8253 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
8255 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
8256 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
8258 2) iASL Compiler/Disassembler and Tools:
8260 Fix build error under Bison-2.4.
8262 Dissasembler: Enhanced FADT support. Added decoding of the Boot
8264 flags. Now decode all flags, regardless of the FADT version. Flag output
8265 includes the FADT version which first defined each flag.
8267 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
8269 DSDT). Windows only.
8271 ----------------------------------------
8272 04 December 2008. Summary of changes for version 20081204:
8274 1) ACPI CA Core Subsystem:
8276 The ACPICA Programmer Reference has been completely updated and revamped
8278 this release. This includes updates to the external interfaces, OSL
8279 interfaces, the overview sections, and the debugger reference.
8281 Several new ACPICA interfaces have been implemented and documented in the
8282 programmer reference:
8283 AcpiReset - Writes the reset value to the FADT-defined reset register.
8284 AcpiDisableAllGpes - Disable all available GPEs.
8285 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
8286 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
8287 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
8288 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
8289 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
8291 Most of the public ACPI hardware-related interfaces have been moved to a
8293 file, components/hardware/hwxface.c
8295 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
8296 register lengths within the FADT are now used, and the low level ACPI
8297 register access no longer hardcodes the ACPI register lengths. Given that
8298 there may be some risk in actually trusting the FADT register lengths, a
8300 time option was added to fall back to the default hardcoded lengths if
8302 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
8303 option is set to true for now, and a warning is issued if a suspicious
8305 register length is overridden with the default value.
8307 Fixed a reference count issue in NsRepairObject. This problem was
8309 in version 20081031 as part of a fix to repair Buffer objects within
8312 Added semaphore support to the Linux/Unix application OS-services layer
8313 (OSL). ACPICA BZ 448. Lin Ming.
8315 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
8317 be implemented in the OSL, or will binary semaphores be used instead.
8319 Example Code and Data Size: These are the sizes for the OS-independent
8320 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8321 debug version of the code includes the debug output trace mechanism and
8323 much larger code and data size.
8326 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
8327 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
8329 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
8330 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
8332 2) iASL Compiler/Disassembler and Tools:
8334 iASL: Completed the '-e' option to include additional ACPI tables in
8337 aid with disassembly and External statement generation. ACPICA BZ 742.
8341 iASL: Removed the "named object in while loop" error. The compiler cannot
8342 determine how many times a loop will execute. ACPICA BZ 730.
8344 Disassembler: Implemented support for FADT revision 2 (MS extension).
8348 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
8351 ----------------------------------------
8352 31 October 2008. Summary of changes for version 20081031:
8354 1) ACPI CA Core Subsystem:
8356 Restructured the ACPICA header files into public/private. acpi.h now
8358 only the "public" acpica headers. All other acpica headers are "private"
8360 should not be included by acpica users. One new file, accommon.h is used
8362 include the commonly used private headers for acpica code generation.
8364 plans include moving all private headers to a new subdirectory.
8366 Implemented an automatic Buffer->String return value conversion for
8367 predefined ACPI methods. For these methods (such as _BIF), added
8369 conversion for return objects that are required to be a String, but a
8371 was found instead. This can happen when reading string battery data from
8373 operation region, because it used to be difficult to convert the data
8375 buffer to string from within the ASL. Ensures that the host OS is
8377 with a valid null-terminated string. Linux BZ 11822.
8379 Updated the FACS waking vector interfaces. Split
8380 AcpiSetFirmwareWakingVector
8381 into two: one for the 32-bit vector, another for the 64-bit vector. This
8383 required because the host OS must setup the wake much differently for
8385 vector (real vs. protected mode, etc.) and the interface itself should
8388 deciding which vector to use. Also, eliminated the
8389 GetFirmwareWakingVector
8390 interface, as it served no purpose (only the firmware reads the vector,
8392 only writes the vector.) ACPICA BZ 731.
8394 Implemented a mechanism to escape infinite AML While() loops. Added a
8396 counter to force exit from AML While loops if the count becomes too
8398 This can occur in poorly written AML when the hardware does not respond
8399 within a while loop and the loop does not implement a timeout. The
8401 loop count is configurable. A new exception code is returned when a loop
8403 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
8405 Optimized the execution of AML While loops. Previously, a control state
8406 object was allocated and freed for each execution of the loop. The
8407 optimization is to simply reuse the control state for each iteration.
8409 speeds up the raw loop execution time by about 5%.
8411 Enhanced the implicit return mechanism. For Windows compatibility, return
8413 implicit integer of value zero for methods that contain no executable
8415 Such methods are seen in the field as stubs (presumably), and can cause
8416 drivers to fail if they expect a return value. Lin Ming.
8418 Allow multiple backslashes as root prefixes in namepaths. In a fully
8419 qualified namepath, allow multiple backslash prefixes. This can happen
8421 is seen in the field) because of the use of a double-backslash in strings
8422 (since backslash is the escape character) causing confusion. ACPICA BZ
8426 Emit a warning if two different FACS or DSDT tables are discovered in the
8427 FADT. Checks if there are two valid but different addresses for the FACS
8429 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
8431 Consolidated the method argument count validation code. Merged the code
8433 validates control method argument counts into the predefined validation
8434 module. Eliminates possible multiple warnings for incorrect argument
8437 Implemented ACPICA example code. Includes code for ACPICA initialization,
8438 handler installation, and calling a control method. Available at
8439 source/tools/examples.
8441 Added a global pointer for FACS table to simplify internal FACS access.
8443 the global pointer instead of using AcpiGetTableByIndex for each FACS
8445 This simplifies the code for the Global Lock and the Firmware Waking
8448 Example Code and Data Size: These are the sizes for the OS-independent
8449 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8450 debug version of the code includes the debug output trace mechanism and
8452 much larger code and data size.
8455 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8456 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8458 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
8459 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
8461 2) iASL Compiler/Disassembler and Tools:
8463 iASL: Improved disassembly of external method calls. Added the -e option
8465 allow the inclusion of additional ACPI tables to help with the
8468 method invocations and the generation of external declarations during the
8469 disassembly. Certain external method invocations cannot be disassembled
8470 properly without the actual declaration of the method. Use the -e option
8472 include the table where the external method(s) are actually declared.
8474 useful for disassembling SSDTs that make method calls back to the master
8475 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
8477 -e dsdt.aml ssdt1.aml
8479 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
8480 problem where the use of an alias within a namepath would result in a not
8481 found error or cause the compiler to fault. Also now allows forward
8482 references from the Alias operator itself. ACPICA BZ 738.
8484 ----------------------------------------
8485 26 September 2008. Summary of changes for version 20080926:
8487 1) ACPI CA Core Subsystem:
8489 Designed and implemented a mechanism to validate predefined ACPI methods
8491 objects. This code validates the predefined ACPI objects (objects whose
8493 start with underscore) that appear in the namespace, at the time they are
8494 evaluated. The argument count and the type of the returned object are
8495 validated against the ACPI specification. The purpose of this validation
8497 to detect problems with the BIOS-implemented predefined ACPI objects
8499 the results are returned to the ACPI-related drivers. Future enhancements
8501 include actual repair of incorrect return objects where possible. Two new
8502 files are nspredef.c and acpredef.h.
8504 Fixed a fault in the AML parser if a memory allocation fails during the
8506 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
8508 Fixed an issue with implicit return compatibility. This change improves
8510 implicit return mechanism to be more compatible with the MS interpreter.
8512 Ming, ACPICA BZ 349.
8514 Implemented support for zero-length buffer-to-string conversions. Allow
8516 length strings during interpreter buffer-to-string conversions. For
8518 during the ToDecimalString and ToHexString operators, as well as implicit
8519 conversions. Fiodor Suietov, ACPICA BZ 585.
8521 Fixed two possible memory leaks in the error exit paths of
8522 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
8524 similar in that they use a stack of state objects in order to eliminate
8525 recursion. The stack must be fully unwound and deallocated if an error
8526 occurs. Lin Ming. ACPICA BZ 383.
8528 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
8530 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
8531 Moore ACPICA BZ 442.
8533 Removed the obsolete version number in module headers. Removed the
8534 "$Revision" number that appeared in each module header. This version
8536 was useful under SourceSafe and CVS, but has no meaning under git. It is
8538 only incorrect, it could also be misleading.
8540 Example Code and Data Size: These are the sizes for the OS-independent
8541 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8542 debug version of the code includes the debug output trace mechanism and
8544 much larger code and data size.
8547 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8548 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8550 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8551 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8553 ----------------------------------------
8554 29 August 2008. Summary of changes for version 20080829:
8556 1) ACPI CA Core Subsystem:
8558 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
8559 Reference. Changes include the elimination of cheating on the Object
8561 for the DdbHandle subtype, addition of a reference class field to
8562 differentiate the various reference types (instead of an AML opcode), and
8564 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
8566 Reduce an error to a warning for an incorrect method argument count.
8567 Previously aborted with an error if too few arguments were passed to a
8568 control method via the external ACPICA interface. Now issue a warning
8570 and continue. Handles the case where the method inadvertently declares
8572 many arguments, but does not actually use the extra ones. Applies mainly
8574 the predefined methods. Lin Ming. Linux BZ 11032.
8576 Disallow the evaluation of named object types with no intrinsic value.
8578 AE_TYPE for objects that have no value and therefore evaluation is
8580 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
8582 these types were allowed, but an exception would be generated at some
8584 during the evaluation. Now, the error is generated up front.
8586 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
8587 (nsnames.c). Fixes a leak in the error exit path.
8589 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
8591 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
8593 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
8596 Removed obsolete and/or unused exception codes from the acexcep.h header.
8597 There is the possibility that certain device drivers may be affected if
8599 use any of these exceptions.
8601 The ACPICA documentation has been added to the public git source tree,
8603 acpica/documents. Included are the ACPICA programmer reference, the iASL
8604 compiler reference, and the changes.txt release logfile.
8606 Example Code and Data Size: These are the sizes for the OS-independent
8607 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8608 debug version of the code includes the debug output trace mechanism and
8610 much larger code and data size.
8613 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8614 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8616 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8617 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8619 2) iASL Compiler/Disassembler and Tools:
8621 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
8622 defines _SCP with 3 arguments. Previous versions defined it with only 1
8623 argument. iASL now allows both definitions.
8625 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
8627 length subtables when disassembling ACPI tables. Also fixed a couple of
8628 errors where a full 16-bit table type field was not extracted from the
8632 acpisrc: Improve comment counting mechanism for generating source code
8633 statistics. Count first and last lines of multi-line comments as
8635 not comment lines. Handle Linux legal header in addition to standard
8639 ----------------------------------------
8641 29 July 2008. Summary of changes for version 20080729:
8643 1) ACPI CA Core Subsystem:
8645 Fix a possible deadlock in the GPE dispatch. Remove call to
8646 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
8648 to acquire the GPE lock but can deadlock since the GPE lock is already
8650 at dispatch time. This code was introduced in version 20060831 as a
8652 to Linux BZ 6881 and has since been removed from Linux.
8654 Add a function to dereference returned reference objects. Examines the
8656 object from a call to AcpiEvaluateObject. Any Index or RefOf references
8658 automatically dereferenced in an attempt to return something useful
8660 reference types cannot be converted into an external ACPI_OBJECT.)
8662 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
8664 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
8665 subtables for the MADT and one new subtable for the SRAT. Includes
8666 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
8668 Specification, June 2008.
8670 Additional error checking for pathname utilities. Add error check after
8672 calls to AcpiNsGetPathnameLength. Add status return from
8673 AcpiNsBuildExternalPath and check after all calls. Add parameter
8675 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
8677 Return status from the global init function AcpiUtGlobalInitialize. This
8679 used by both the kernel subsystem and the utilities such as iASL
8681 The function could possibly fail when the caches are initialized. Yang
8684 Add a function to decode reference object types to strings. Created for
8685 improved error messages.
8687 Improve object conversion error messages. Better error messages during
8689 conversion from internal to the external ACPI_OBJECT. Used for external
8691 to AcpiEvaluateObject.
8693 Example Code and Data Size: These are the sizes for the OS-independent
8694 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8695 debug version of the code includes the debug output trace mechanism and
8697 much larger code and data size.
8700 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8701 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8703 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8704 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8706 2) iASL Compiler/Disassembler and Tools:
8708 Debugger: fix a possible hang when evaluating non-methods. Fixes a
8710 introduced in version 20080701. If the object being evaluated (via
8712 command) is not a method, the debugger can hang while trying to obtain
8714 existent parameters.
8716 iASL: relax error for using reserved "_T_x" identifiers. These names can
8717 appear in a disassembled ASL file if they were emitted by the original
8718 compiler. Instead of issuing an error or warning and forcing the user to
8719 manually change these names, issue a remark instead.
8721 iASL: error if named object created in while loop. Emit an error if any
8723 object is created within a While loop. If allowed, this code will
8726 run-time error on the second iteration of the loop when an attempt is
8729 create the same named object twice. ACPICA bugzilla 730.
8731 iASL: Support absolute pathnames for include files. Add support for
8733 pathnames within the Include operator. previously, only relative
8737 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
8739 The ACPI spec requires one interrupt minimum. BZ 423
8741 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
8742 Handles the case for the Interrupt Resource Descriptor where
8743 the ResourceSource argument is omitted but ResourceSourceIndex
8744 is present. Now leave room for the Index. BZ 426
8746 iASL: Prevent error message if CondRefOf target does not exist. Fixes
8748 where an error message is emitted if the target does not exist. BZ 516
8750 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
8751 (get ACPI tables on Windows). This was apparently broken in version
8754 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
8756 the EOF happens immediately after the last table in the input file. Print
8757 completion message. Previously, no message was displayed in this case.
8759 ----------------------------------------
8760 01 July 2008. Summary of changes for version 20080701:
8762 0) Git source tree / acpica.org
8764 Fixed a problem where a git-clone from http would not transfer the entire
8767 1) ACPI CA Core Subsystem:
8769 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
8770 enable bit. Now performs a read-change-write of the enable register
8772 of simply writing out the cached enable mask. This will prevent
8774 enabling of GPEs if a rogue GPE is received during initialization (before
8776 handlers are installed.)
8778 Implemented a copy for dynamically loaded tables. Previously, dynamically
8779 loaded tables were simply mapped - but on some machines this memory is
8780 corrupted after suspend. Now copy the table to a local buffer. For the
8781 OpRegion case, added checksum verify. Use the table length from the table
8782 header, not the region length. For the Buffer case, use the table length
8783 also. Dennis Noordsij, Bob Moore. BZ 10734
8785 Fixed a problem where the same ACPI table could not be dynamically loaded
8787 unloaded more than once. Without this change, a table cannot be loaded
8789 once it has been loaded/unloaded one time. The current mechanism does not
8790 unregister a table upon an unload. During a load, if the same table is
8792 this no longer returns an exception. BZ 722
8794 Fixed a problem where the wrong descriptor length was calculated for the
8795 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
8797 are calculated as 12 bytes long, but the actual length in the internal
8798 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8800 by Linn Crosetto. BZ 728
8802 Fixed a possible memory leak in the Unload operator. The DdbHandle
8804 by Load() did not have its reference count decremented during unload,
8806 to a memory leak. Lin Ming. BZ 727
8808 Fixed a possible memory leak when deleting thermal/processor objects. Any
8809 associated notify handlers (and objects) were not being deleted. Fiodor
8812 Fixed the ordering of the ASCII names in the global mutex table to match
8814 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8816 Vegard Nossum. BZ 726
8818 Enhanced the AcpiGetObjectInfo interface to return the number of required
8819 arguments if the object is a control method. Added this call to the
8821 so the proper number of default arguments are passed to a method. This
8822 prevents a warning when executing methods from AcpiExec.
8824 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8825 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8827 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8829 Example Code and Data Size: These are the sizes for the OS-independent
8830 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8831 debug version of the code includes the debug output trace mechanism and
8833 much larger code and data size.
8836 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8837 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8839 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8840 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8842 2) iASL Compiler/Disassembler and Tools:
8844 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8845 resource descriptor names.
8847 iASL: Detect invalid ASCII characters in input (windows version). Removed
8849 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8850 characters in the input. BZ 441
8852 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8854 "result of operation not used" warning when the DDB handle returned from
8855 LoadTable is not used. The warning is not needed. BZ 590
8857 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8860 pass address of table to the AML. Added option to disable OpRegion
8862 to allow creation of an OpRegion with a real address that was passed to
8864 All of this allows testing of the Load and Unload operators from
8867 Debugger: update tables command for unloaded tables. Handle unloaded
8869 and use the standard table header output routine.
8871 ----------------------------------------
8872 09 June 2008. Summary of changes for version 20080609:
8874 1) ACPI CA Core Subsystem:
8876 Implemented a workaround for reversed _PRT entries. A significant number
8878 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8879 change dynamically detects and repairs this problem. Provides
8881 with MS ACPI. BZ 6859
8883 Simplified the internal ACPI hardware interfaces to eliminate the locking
8884 flag parameter from Register Read/Write. Added a new external interface,
8885 AcpiGetRegisterUnlocked.
8887 Fixed a problem where the invocation of a GPE control method could hang.
8889 was a regression introduced in 20080514. The new method argument count
8890 validation mechanism can enter an infinite loop when a GPE method is
8891 dispatched. Problem fixed by removing the obsolete code that passed GPE
8893 information to the notify handler via the control method parameter
8896 Fixed a problem where the _SST execution status was incorrectly returned
8898 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8900 20080514. _SST is optional and a NOT_FOUND exception should never be
8903 Fixed a problem where a deleted object could be accessed from within the
8905 parser. This was a regression introduced in version 20080123 as a fix for
8907 Unload operator. Lin Ming. BZ 10669
8909 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8911 and eliminated the use of a negative index in a loop. Operands are now
8912 displayed in the correct order, not backwards. This also fixes a
8914 introduced in 20080514 on 64-bit systems where the elimination of
8915 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8918 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8920 path did not delete a locally allocated structure.
8922 Updated definitions for the DMAR and SRAT tables to synchronize with the
8923 current specifications. Includes disassembler support.
8925 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8926 loop termination value was used. Loop terminated on iteration early,
8928 one mutex. Linn Crosetto
8930 Example Code and Data Size: These are the sizes for the OS-independent
8931 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8932 debug version of the code includes the debug output trace mechanism and
8934 much larger code and data size.
8937 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8938 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8940 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8941 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8943 2) iASL Compiler/Disassembler and Tools:
8945 Disassembler: Implemented support for EisaId() within _CID objects. Now
8946 disassemble integer _CID objects back to EisaId invocations, including
8947 multiple integers within _CID packages. Includes single-step support for
8950 Disassembler: Added support for DMAR and SRAT table definition changes.
8952 ----------------------------------------
8953 14 May 2008. Summary of changes for version 20080514:
8955 1) ACPI CA Core Subsystem:
8957 Fixed a problem where GPEs were enabled too early during the ACPICA
8958 initialization. This could lead to "handler not installed" errors on some
8959 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8961 ensures that all operation regions and devices throughout the namespace
8963 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8965 Implemented a change to the enter sleep code. Moved execution of the _GTS
8966 method to just before setting sleep enable bit. The execution was moved
8968 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8969 immediately before the SLP_EN bit is set, as per the ACPI specification.
8972 Implemented a fix to disable unknown GPEs (2nd version). Now always
8974 the GPE, even if ACPICA thinks that that it is already disabled. It is
8975 possible that the AML or some other code has enabled the GPE unbeknownst
8979 Fixed a problem with the Field operator where zero-length fields would
8981 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8983 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8985 Implemented a fix for the Load operator, now load the table at the
8987 root. This reverts a change introduced in version 20071019. The table is
8989 loaded at the namespace root even though this goes against the ACPI
8990 specification. This provides compatibility with other ACPI
8992 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8995 Fixed a problem where ACPICA would not Load() tables with unusual
8997 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8998 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8999 Therefore, signature validation is worthless. Apparently MS ACPI accepts
9001 signatures, ACPICA must be compatible. BZ 10454.
9003 Fixed a possible negative array index in AcpiUtValidateException. Added
9005 fields to the exception string arrays to eliminate a -1 subtraction on
9009 Updated the debug tracking macros to reduce overall code and data size.
9010 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
9011 instead of pointers to static strings. Jan Beulich and Bob Moore.
9013 Implemented argument count checking in control method invocation via
9014 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
9016 many. This applies only to extern programmatic control method execution,
9018 method-to-method calls within the AML. Lin Ming.
9020 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
9022 longer needed, especially with the removal of 16-bit support. It was
9024 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
9027 32/64-bit platforms is required.
9029 Added the C const qualifier for appropriate string constants -- mostly
9030 MODULE_NAME and printf format strings. Jan Beulich.
9032 Example Code and Data Size: These are the sizes for the OS-independent
9033 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9034 debug version of the code includes the debug output trace mechanism and
9036 much larger code and data size.
9039 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
9040 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
9042 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
9043 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
9045 2) iASL Compiler/Disassembler and Tools:
9047 Implemented ACPI table revision ID validation in the disassembler. Zero
9049 always invalid. For DSDTs, the ID controls the interpreter integer width.
9051 means 32-bit and this is unusual. 2 or greater is 64-bit.
9053 ----------------------------------------
9054 21 March 2008. Summary of changes for version 20080321:
9056 1) ACPI CA Core Subsystem:
9058 Implemented an additional change to the GPE support in order to suppress
9059 spurious or stray GPEs. The AcpiEvDisableGpe function will now
9061 disable incoming GPEs that are neither enabled nor disabled -- meaning
9063 the GPE is unknown to the system. This should prevent future interrupt
9065 from that GPE. BZ 6217 (Zhang Rui)
9067 Fixed a problem where NULL package elements were not returned to the
9068 AcpiEvaluateObject interface correctly. The element was simply ignored
9069 instead of returning a NULL ACPI_OBJECT package element, potentially
9071 a buffer overflow and/or confusing the caller who expected a fixed number
9073 elements. BZ 10132 (Lin Ming, Bob Moore)
9075 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
9077 Qword), Field, BankField, and IndexField operators when invoked from
9079 an executing control method. In this case, these operators created
9081 nodes that were incorrectly left marked as permanent nodes instead of
9082 temporary nodes. This could cause a problem if there is race condition
9083 between an exiting control method and a running namespace walk. (Reported
9087 Fixed a problem where the CreateField and CreateXXXField operators would
9088 incorrectly allow duplicate names (the name of the field) with no
9092 Implemented several changes for Notify handling. Added support for new
9094 values (ACPI 2.0+) and improved the Notify debug output. Notify on
9095 PowerResource objects is no longer allowed, as per the ACPI
9097 (Bob Moore, Zhang Rui)
9099 All Reference Objects returned via the AcpiEvaluateObject interface are
9101 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
9103 NULL objects - either NULL package elements or unresolved named
9106 Fixed a problem where an extraneous debug message was produced for
9108 objects (when debugging enabled). The message "Package List length larger
9109 than NumElements count" is now produced in the correct case, and is now
9111 error message rather than a debug message. Added a debug message for the
9112 opposite case, where NumElements is larger than the Package List (the
9114 will be padded out with NULL elements as per the ACPI spec.)
9116 Implemented several improvements for the output of the ASL "Debug" object
9118 clarify and keep all data for a given object on one output line.
9120 Fixed two size calculation issues with the variable-length Start
9122 resource descriptor.
9124 Example Code and Data Size: These are the sizes for the OS-independent
9125 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9126 debug version of the code includes the debug output trace mechanism and
9128 a much larger code and data size.
9131 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
9132 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
9134 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
9135 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
9137 2) iASL Compiler/Disassembler and Tools:
9139 Fixed a problem with the use of the Switch operator where execution of
9141 containing method by multiple concurrent threads could cause an
9142 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
9143 actual Switch opcode, it must be simulated with local named temporary
9144 variables and if/else pairs. The solution chosen was to mark any method
9146 uses Switch as Serialized, thus preventing multiple thread entries. BZ
9149 ----------------------------------------
9150 13 February 2008. Summary of changes for version 20080213:
9152 1) ACPI CA Core Subsystem:
9154 Implemented another MS compatibility design change for GPE/Notify
9156 GPEs are now cleared/enabled asynchronously to allow all pending notifies
9158 complete first. It is expected that the OSL will queue the enable request
9159 behind all pending notify requests (may require changes to the local host
9161 in AcpiOsExecute). Alexey Starikovskiy.
9163 Fixed a problem where buffer and package objects passed as arguments to a
9164 control method via the external AcpiEvaluateObject interface could cause
9166 AE_AML_INTERNAL exception depending on the order and type of operators
9167 executed by the target control method.
9169 Fixed a problem where resource descriptor size optimization could cause a
9170 problem when a _CRS resource template is passed to a _SRS method. The
9172 resource template must use the same descriptors (with the same size) as
9173 returned from _CRS. This change affects the following resource
9175 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
9178 Fixed a problem where a CopyObject to RegionField, BankField, and
9180 objects did not perform an implicit conversion as it should. These types
9182 retain their initial type permanently as per the ACPI specification.
9184 a CopyObject to all other object types should not perform an implicit
9185 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
9187 Fixed a problem with the AcpiGetDevices interface where the mechanism to
9188 match device CIDs did not examine the entire list of available CIDs, but
9189 instead aborted on the first non-matching CID. Andrew Patterson.
9191 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
9193 inadvertently changed to return a 16-bit value instead of a 32-bit value,
9194 truncating the upper dword of a 64-bit value. This macro is only used to
9195 display debug output, so no incorrect calculations were made. Also,
9196 reimplemented the macro so that a 64-bit shift is not performed by
9197 inefficient compilers.
9199 Added missing va_end statements that should correspond with each va_start
9202 Example Code and Data Size: These are the sizes for the OS-independent
9203 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9204 debug version of the code includes the debug output trace mechanism and
9206 a much larger code and data size.
9209 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
9210 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
9212 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
9213 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
9215 2) iASL Compiler/Disassembler and Tools:
9217 Implemented full disassembler support for the following new ACPI tables:
9218 BERT, EINJ, and ERST. Implemented partial disassembler support for the
9219 complicated HEST table. These tables support the Windows Hardware Error
9220 Architecture (WHEA).
9222 ----------------------------------------
9223 23 January 2008. Summary of changes for version 20080123:
9225 1) ACPI CA Core Subsystem:
9227 Added the 2008 copyright to all module headers and signons. This affects
9228 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9229 the tools/utilities.
9231 Fixed a problem with the SizeOf operator when used with Package and
9233 objects. These objects have deferred execution for some arguments, and
9235 execution is now completed before the SizeOf is executed. This problem
9237 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
9241 Implemented an enhancement to the interpreter "slack mode". In the
9244 an explicit return or an implicitly returned object from the last
9246 opcode, a control method will now implicitly return an integer of value 0
9248 Microsoft compatibility. (Lin Ming) BZ 392
9250 Fixed a problem with the Load operator where an exception was not
9253 the case where the table is already loaded. (Lin Ming) BZ 463
9255 Implemented support for the use of DDBHandles as an Indexed Reference, as
9257 the ACPI spec. (Lin Ming) BZ 486
9259 Implemented support for UserTerm (Method invocation) for the Unload
9261 as per the ACPI spec. (Lin Ming) BZ 580
9263 Fixed a problem with the LoadTable operator where the OemId and
9265 input strings could cause unexpected failures if they were shorter than
9267 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
9269 Implemented support for UserTerm (Method invocation) for the Unload
9271 as per the ACPI spec. (Lin Ming) BZ 580
9273 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
9275 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
9277 Example Code and Data Size: These are the sizes for the OS-independent
9278 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9279 debug version of the code includes the debug output trace mechanism and
9281 a much larger code and data size.
9284 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
9285 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
9287 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
9288 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
9290 2) iASL Compiler/Disassembler and Tools:
9292 Implemented support in the disassembler for checksum validation on
9294 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
9296 header dump at the start of the disassembly.
9298 Implemented additional debugging information in the namespace listing
9300 created during compilation. In addition to the namespace hierarchy, the
9302 pathname to each namespace object is displayed.
9304 Fixed a problem with the disassembler where invalid ACPI tables could
9306 faults or infinite loops.
9308 Fixed an unexpected parse error when using the optional "parameter types"
9309 list in a control method declaration. (Lin Ming) BZ 397
9311 Fixed a problem where two External declarations with the same name did
9313 cause an error (Lin Ming) BZ 509
9315 Implemented support for full TermArgs (adding Argx, Localx and method
9316 invocation) for the ParameterData parameter to the LoadTable operator.
9320 ----------------------------------------
9321 19 December 2007. Summary of changes for version 20071219:
9323 1) ACPI CA Core Subsystem:
9325 Implemented full support for deferred execution for the TermArg string
9326 arguments for DataTableRegion. This enables forward references and full
9327 operand resolution for the three string arguments. Similar to
9329 deferred argument execution.) Lin Ming. BZ 430
9331 Implemented full argument resolution support for the BankValue argument
9333 BankField. Previously, only constants were supported, now any TermArg may
9335 used. Lin Ming BZ 387, 393
9337 Fixed a problem with AcpiGetDevices where the search of a branch of the
9338 device tree could be terminated prematurely. In accordance with the ACPI
9339 specification, the search down the current branch is terminated if a
9341 is both not present and not functional (instead of just not present.)
9345 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
9347 the underlying AML code changed the GPE enable registers. Now, any
9349 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
9351 instead of simply ignored. Rui Zhang.
9353 Fixed a problem with Index Fields where the Index register was
9355 limited to a maximum of 32 bits. Now any size may be used.
9357 Fixed a couple memory leaks associated with "implicit return" objects
9359 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
9361 Example Code and Data Size: These are the sizes for the OS-independent
9362 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9363 debug version of the code includes the debug output trace mechanism and
9365 a much larger code and data size.
9368 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
9369 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
9371 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
9372 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
9374 ----------------------------------------
9375 14 November 2007. Summary of changes for version 20071114:
9377 1) ACPI CA Core Subsystem:
9379 Implemented event counters for each of the Fixed Events, the ACPI SCI
9380 (interrupt) itself, and control methods executed. Named
9381 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
9383 should be useful for debugging and statistics.
9385 Implemented a new external interface, AcpiGetStatistics, to retrieve the
9386 contents of the various event counters. Returns the current values for
9387 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
9388 AcpiMethodCount. The interface can be expanded in the future if new
9390 are added. Device drivers should use this interface rather than access
9394 Fixed a problem with the FromBCD and ToBCD operators. With some
9396 the ShortDivide function worked incorrectly, causing problems with the
9398 functions with large input values. A truncation from 64-bit to 32-bit
9399 inadvertently occurred. Internal BZ 435. Lin Ming
9401 Fixed a problem with Index references passed as method arguments.
9403 passed as arguments to control methods were dereferenced immediately
9405 control was passed to the called method). The references are now
9407 passed directly to the called method. BZ 5389. Lin Ming
9409 Fixed a problem with CopyObject used in conjunction with the Index
9411 The reference was incorrectly dereferenced before the copy. The reference
9413 now correctly copied. BZ 5391. Lin Ming
9415 Fixed a problem with Control Method references within Package objects.
9417 references are now correctly generated. This completes the package
9418 construction overhaul that began in version 20071019.
9420 Example Code and Data Size: These are the sizes for the OS-independent
9421 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9422 debug version of the code includes the debug output trace mechanism and
9424 a much larger code and data size.
9427 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9428 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9430 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
9431 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
9434 2) iASL Compiler/Disassembler and Tools:
9436 The AcpiExec utility now installs handlers for all of the predefined
9437 Operation Region types. New types supported are: PCI_Config, CMOS, and
9440 Fixed a problem with the 64-bit version of AcpiExec where the extended
9442 bit) address fields for the DSDT and FACS within the FADT were not being
9443 used, causing truncation of the upper 32-bits of these addresses. Lin
9447 ----------------------------------------
9448 19 October 2007. Summary of changes for version 20071019:
9450 1) ACPI CA Core Subsystem:
9452 Fixed a problem with the Alias operator when the target of the alias is a
9453 named ASL operator that opens a new scope -- Scope, Device,
9455 Processor, and ThermalZone. In these cases, any children of the original
9456 operator could not be accessed via the alias, potentially causing
9458 AE_NOT_FOUND exceptions. (BZ 9067)
9460 Fixed a problem with the Package operator where all named references were
9461 created as object references and left otherwise unresolved. According to
9463 ACPI specification, a Package can only contain Data Objects or references
9465 control methods. The implication is that named references to Data Objects
9466 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
9467 immediately upon package creation. This is the approach taken with this
9468 change. References to all other named objects (Methods, Devices, Scopes,
9469 etc.) are all now properly created as reference objects. (BZ 5328)
9471 Reverted a change to Notify handling that was introduced in version
9472 20070508. This version changed the Notify handling from asynchronous to
9473 fully synchronous (Device driver Notify handling with respect to the
9475 ASL operator). It was found that this change caused more problems than it
9476 solved and was removed by most users.
9478 Fixed a problem with the Increment and Decrement operators where the type
9480 the target object could be unexpectedly and incorrectly changed. (BZ 353)
9483 Fixed a problem with the Load and LoadTable operators where the table
9484 location within the namespace was ignored. Instead, the table was always
9485 loaded into the root or current scope. Lin Ming.
9487 Fixed a problem with the Load operator when loading a table from a buffer
9488 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
9490 Fixed a problem with the Debug object where a store of a DdbHandle
9492 object to the Debug object could cause a fault.
9494 Added a table checksum verification for the Load operator, in the case
9496 the load is from a buffer. (BZ 578).
9498 Implemented additional parameter validation for the LoadTable operator.
9500 length of the input strings SignatureString, OemIdString, and OemTableId
9502 now checked for maximum lengths. (BZ 582) Lin Ming.
9504 Example Code and Data Size: These are the sizes for the OS-independent
9505 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9506 debug version of the code includes the debug output trace mechanism and
9508 a much larger code and data size.
9511 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9512 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9514 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9515 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9518 2) iASL Compiler/Disassembler:
9520 Fixed a problem where if a single file was specified and the file did not
9521 exist, no error message was emitted. (Introduced with wildcard support in
9524 ----------------------------------------
9525 19 September 2007. Summary of changes for version 20070919:
9527 1) ACPI CA Core Subsystem:
9529 Designed and implemented new external interfaces to install and remove
9530 handlers for ACPI table-related events. Current events that are defined
9532 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
9533 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
9534 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
9536 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
9537 (acpi_serialized option on Linux) could cause some systems to hang during
9538 initialization. (Bob Moore) BZ 8171
9540 Fixed a problem where objects of certain types (Device, ThermalZone,
9541 Processor, PowerResource) can be not found if they are declared and
9542 referenced from within the same control method (Lin Ming) BZ 341
9544 Example Code and Data Size: These are the sizes for the OS-independent
9545 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9546 debug version of the code includes the debug output trace mechanism and
9548 a much larger code and data size.
9551 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9552 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9554 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9555 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9558 2) iASL Compiler/Disassembler:
9560 Implemented support to allow multiple files to be compiled/disassembled
9563 single invocation. This includes command line wildcard support for both
9565 Windows and Unix versions of the compiler. This feature simplifies the
9566 disassembly and compilation of multiple ACPI tables in a single
9569 ----------------------------------------
9570 08 May 2007. Summary of changes for version 20070508:
9572 1) ACPI CA Core Subsystem:
9574 Implemented a Microsoft compatibility design change for the handling of
9576 Notify AML operator. Previously, notify handlers were dispatched and
9577 executed completely asynchronously in a deferred thread. The new design
9578 still executes the notify handlers in a different thread, but the
9580 thread that executed the Notify() now waits at a synchronization point
9582 the notify handler to complete. Some machines depend on a synchronous
9584 operator in order to operate correctly.
9586 Implemented support to allow Package objects to be passed as method
9587 arguments to the external AcpiEvaluateObject interface. Previously, this
9588 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
9589 implemented since there were no reserved control methods that required it
9592 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
9594 contained invalid non-zero values in reserved fields could cause later
9595 failures because these fields have meaning in later revisions of the
9597 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
9599 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
9601 Fixed a problem where the Global Lock handle was not properly updated if
9603 thread that acquired the Global Lock via executing AML code then
9605 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
9609 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
9610 could be corrupted if the interrupt being removed was at the head of the
9611 list. Reported by Linn Crosetto.
9613 Example Code and Data Size: These are the sizes for the OS-independent
9614 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9615 debug version of the code includes the debug output trace mechanism and
9617 a much larger code and data size.
9620 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9621 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9623 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9624 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9626 ----------------------------------------
9627 20 March 2007. Summary of changes for version 20070320:
9629 1) ACPI CA Core Subsystem:
9631 Implemented a change to the order of interpretation and evaluation of AML
9632 operand objects within the AML interpreter. The interpreter now evaluates
9633 operands in the order that they appear in the AML stream (and the
9634 corresponding ASL code), instead of in the reverse order (after the
9636 operand list has been parsed). The previous behavior caused several
9638 incompatibilities with the Microsoft AML interpreter as well as being
9639 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
9641 Implemented a change to the ACPI Global Lock support. All interfaces to
9643 global lock now allow the same thread to acquire the lock multiple times.
9644 This affects the AcpiAcquireGlobalLock external interface to the global
9646 as well as the internal use of the global lock to support AML fields -- a
9647 control method that is holding the global lock can now simultaneously
9649 AML fields that require global lock protection. Previously, in both
9651 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
9653 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
9654 Controller. There is no change to the behavior of the AML Acquire
9656 as this can already be used to acquire a mutex multiple times by the same
9657 thread. BZ 8066. With assistance from Alexey Starikovskiy.
9659 Fixed a problem where invalid objects could be referenced in the AML
9660 Interpreter after error conditions. During operand evaluation, ensure
9662 the internal "Return Object" field is cleared on error and only valid
9663 pointers are stored there. Caused occasional access to deleted objects
9665 resulted in "large reference count" warning messages. Valery Podrezov.
9667 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
9669 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
9672 Fixed an internal problem with the handling of result objects on the
9673 interpreter result stack. BZ 7872. Valery Podrezov.
9675 Removed obsolete code that handled the case where AML_NAME_OP is the
9677 of a reference (Reference.Opcode). This code was no longer necessary. BZ
9678 7874. Valery Podrezov.
9680 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
9683 remnant from the previously discontinued 16-bit support.
9685 Example Code and Data Size: These are the sizes for the OS-independent
9686 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9687 debug version of the code includes the debug output trace mechanism and
9689 a much larger code and data size.
9692 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9693 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9695 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9696 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9698 ----------------------------------------
9699 26 January 2007. Summary of changes for version 20070126:
9701 1) ACPI CA Core Subsystem:
9703 Added the 2007 copyright to all module headers and signons. This affects
9704 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9707 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
9708 during a table load. A bad pointer was passed in the case where the DSDT
9710 overridden, causing a fault in this case.
9712 Example Code and Data Size: These are the sizes for the OS-independent
9713 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9714 debug version of the code includes the debug output trace mechanism and
9716 a much larger code and data size.
9719 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9720 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9722 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9723 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9725 ----------------------------------------
9726 15 December 2006. Summary of changes for version 20061215:
9728 1) ACPI CA Core Subsystem:
9730 Support for 16-bit ACPICA has been completely removed since it is no
9732 necessary and it clutters the code. All 16-bit macros, types, and
9733 conditional compiles have been removed, cleaning up and simplifying the
9735 across the entire subsystem. DOS support is no longer needed since the
9736 bootable Linux firmware kit is now available.
9738 The handler for the Global Lock is now removed during AcpiTerminate to
9739 enable a clean subsystem restart, via the implementation of the
9740 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
9743 Implemented enhancements to the multithreading support within the
9745 to enable improved multithreading debugging and evaluation of the
9749 Debugger: Enhanced the Statistics/Memory command to emit the total
9751 memory used during the execution, as well as the maximum memory consumed
9753 each of the various object types. (Valery Podrezov)
9755 Example Code and Data Size: These are the sizes for the OS-independent
9756 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9757 debug version of the code includes the debug output trace mechanism and
9759 a much larger code and data size.
9762 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9763 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9765 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9766 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9769 2) iASL Compiler/Disassembler and Tools:
9771 AcpiExec: Implemented a new option (-m) to display full memory use
9772 statistics upon subsystem/program termination. (Valery Podrezov)
9774 ----------------------------------------
9775 09 November 2006. Summary of changes for version 20061109:
9777 1) ACPI CA Core Subsystem:
9779 Optimized the Load ASL operator in the case where the source operand is
9781 operation region. Simply map the operation region memory, instead of
9782 performing a bytewise read. (Region must be of type SystemMemory, see
9785 Fixed the Load ASL operator for the case where the source operand is a
9786 region field. A buffer object is also allowed as the source operand. BZ
9789 Fixed a problem where the Load ASL operator allowed the source operand to
9791 an operation region of any type. It is now restricted to regions of type
9792 SystemMemory, as per the ACPI specification. BZ 481
9794 Additional cleanup and optimizations for the new Table Manager code.
9796 AcpiEnable will now fail if all of the required ACPI tables are not
9798 (FADT, FACS, DSDT). BZ 477
9800 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9802 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9803 manually optimized to be aligned and will not work if it is byte-packed.
9805 Example Code and Data Size: These are the sizes for the OS-independent
9806 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9807 debug version of the code includes the debug output trace mechanism and
9809 a much larger code and data size.
9812 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9813 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9815 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9816 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9819 2) iASL Compiler/Disassembler and Tools:
9821 Fixed a problem where the presence of the _OSI predefined control method
9822 within complex expressions could cause an internal compiler error.
9824 AcpiExec: Implemented full region support for multiple address spaces.
9825 SpaceId is now part of the REGION object. BZ 429
9827 ----------------------------------------
9828 11 October 2006. Summary of changes for version 20061011:
9830 1) ACPI CA Core Subsystem:
9832 Completed an AML interpreter performance enhancement for control method
9833 execution. Previously a 2-pass parse/execution, control methods are now
9834 completely parsed and executed in a single pass. This improves overall
9835 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9836 use. (Valery Podrezov + interpreter changes in version 20051202 that
9837 eliminated namespace loading during the pass one parse.)
9839 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9841 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9843 obtained and also checked for an ID match.
9845 Implemented additional support for the PCI _ADR execution: upsearch until
9847 device scope is found before executing _ADR. This allows PCI_Config
9848 operation regions to be declared locally within control methods
9852 Fixed a problem with a possible race condition between threads executing
9853 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9854 modifying AcpiWalkNamespace to (by default) ignore all temporary
9856 entries created during any concurrent control method execution. An
9857 additional namespace race condition is known to exist between
9858 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9861 Restructured the AML ParseLoop function, breaking it into several
9862 subfunctions in order to reduce CPU stack use and improve
9866 AcpiGetHandle: Fix for parameter validation to detect invalid
9868 of prefix handle and pathname. BZ 478
9870 Example Code and Data Size: These are the sizes for the OS-independent
9871 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9872 debug version of the code includes the debug output trace mechanism and
9874 a much larger code and data size.
9877 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9878 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9880 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9881 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9883 2) iASL Compiler/Disassembler and Tools:
9885 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9887 to restore original behavior.
9889 ----------------------------------------
9890 27 September 2006. Summary of changes for version 20060927:
9892 1) ACPI CA Core Subsystem:
9894 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9895 These functions now use a spinlock for mutual exclusion and the interrupt
9896 level indication flag is not needed.
9898 Fixed a problem with the Global Lock where the lock could appear to be
9899 obtained before it is actually obtained. The global lock semaphore was
9900 inadvertently created with one unit instead of zero units. (BZ 464)
9904 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9906 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9908 Example Code and Data Size: These are the sizes for the OS-independent
9909 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9910 debug version of the code includes the debug output trace mechanism and
9912 a much larger code and data size.
9915 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9916 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9918 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9919 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9922 2) iASL Compiler/Disassembler and Tools:
9924 Fixed a compilation problem with the pre-defined Resource Descriptor
9926 names where an "object does not exist" error could be incorrectly
9928 if the parent ResourceTemplate pathname places the template within a
9929 different namespace scope than the current scope. (BZ 7212)
9931 Fixed a problem where the compiler could hang after syntax errors
9933 in an ElseIf construct. (BZ 453)
9935 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9936 operator. An incorrect output filename was produced when this parameter
9938 a null string (""). Now, the original input filename is used as the AML
9939 output filename, with an ".aml" extension.
9941 Implemented a generic batch command mode for the AcpiExec utility
9943 any AML debugger command) (Valery Podrezov).
9945 ----------------------------------------
9946 12 September 2006. Summary of changes for version 20060912:
9948 1) ACPI CA Core Subsystem:
9950 Enhanced the implementation of the "serialized mode" of the interpreter
9951 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9952 specified, instead of creating a serialization semaphore per control
9954 the interpreter lock is simply no longer released before a blocking
9955 operation during control method execution. This effectively makes the AML
9956 Interpreter single-threaded. The overhead of a semaphore per-method is
9959 Fixed a regression where an error was no longer emitted if a control
9961 attempts to create 2 objects of the same name. This once again returns
9962 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9964 will dynamically serialize the control method to possible prevent future
9967 Integrated a fix for a problem with PCI Express HID detection in the PCI
9968 Config Space setup procedure. (BZ 7145)
9970 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9971 AcpiHwInitialize function - the FADT registers are now validated when the
9974 Added two new warnings during FADT verification - 1) if the FADT is
9976 than the largest known FADT version, and 2) if there is a mismatch
9979 32-bit block address and the 64-bit X counterpart (when both are non-
9982 Example Code and Data Size: These are the sizes for the OS-independent
9983 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9984 debug version of the code includes the debug output trace mechanism and
9986 a much larger code and data size.
9989 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9990 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9992 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9993 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9996 2) iASL Compiler/Disassembler and Tools:
9998 Fixed a problem with the implementation of the Switch() operator where
10000 temporary variable was declared too close to the actual Switch, instead
10002 at method level. This could cause a problem if the Switch() operator is
10003 within a while loop, causing an error on the second iteration. (BZ 460)
10005 Disassembler - fix for error emitted for unknown type for target of scope
10006 operator. Now, ignore it and continue.
10008 Disassembly of an FADT now verifies the input FADT and reports any errors
10009 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
10011 Disassembly of raw data buffers with byte initialization data now
10013 each output line with the current buffer offset.
10015 Disassembly of ASF! table now includes all variable-length data fields at
10016 the end of some of the subtables.
10018 The disassembler now emits a comment if a buffer appears to be a
10019 ResourceTemplate, but cannot be disassembled as such because the EndTag
10021 not appear at the very end of the buffer.
10023 AcpiExec - Added the "-t" command line option to enable the serialized
10025 of the AML interpreter.
10027 ----------------------------------------
10028 31 August 2006. Summary of changes for version 20060831:
10030 1) ACPI CA Core Subsystem:
10032 Miscellaneous fixes for the Table Manager:
10033 - Correctly initialize internal common FADT for all 64-bit "X" fields
10034 - Fixed a couple table mapping issues during table load
10035 - Fixed a couple alignment issues for IA64
10036 - Initialize input array to zero in AcpiInitializeTables
10037 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
10038 AcpiGetTableByIndex
10040 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
10042 immediately disabled to prevent the waking GPE from firing again and to
10043 prevent other wake GPEs from interrupting the wake process.
10045 Added the AcpiGpeCount global that tracks the number of processed GPEs,
10047 be used for debugging systems with a large number of ACPI interrupts.
10049 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
10050 both the ACPICA headers and the disassembler.
10052 Example Code and Data Size: These are the sizes for the OS-independent
10053 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10054 debug version of the code includes the debug output trace mechanism and
10056 a much larger code and data size.
10059 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
10060 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
10062 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
10063 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
10066 2) iASL Compiler/Disassembler and Tools:
10068 Disassembler support for the DMAR ACPI table.
10070 ----------------------------------------
10071 23 August 2006. Summary of changes for version 20060823:
10073 1) ACPI CA Core Subsystem:
10075 The Table Manager component has been completely redesigned and
10076 reimplemented. The new design is much simpler, and reduces the overall
10078 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
10080 now possible to obtain the ACPI tables very early during kernel
10081 initialization, even before dynamic memory management is initialized.
10082 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
10084 Obsolete ACPICA interfaces:
10086 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
10089 - AcpiLoadTable: Not needed.
10090 - AcpiUnloadTable: Not needed.
10092 New ACPICA interfaces:
10094 - AcpiInitializeTables: Must be called before the table manager can be
10096 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
10097 allocated memory after it becomes available.
10098 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
10102 Other ACPICA changes:
10104 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
10106 AcpiOsUnmapMemory to free this mapping.
10107 - AcpiGetTable returns the actual mapped table. The mapping is managed
10108 internally and must not be deleted by the caller. Use of this interface
10109 causes no additional dynamic memory allocation.
10110 - AcpiFindRootPointer: Support for physical addressing has been
10112 it appeared to be unused.
10113 - The interface to AcpiOsMapMemory has changed to be consistent with the
10114 other allocation interfaces.
10115 - The interface to AcpiOsGetRootPointer has changed to eliminate
10118 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
10120 bit platforms. Was previously 64 bits on all platforms.
10121 - The interface to the ACPI Global Lock acquire/release macros have
10123 slightly since ACPICA no longer keeps a local copy of the FACS with a
10124 constructed pointer to the actual global lock.
10126 Porting to the new table manager:
10128 - AcpiInitializeTables: Must be called once, and can be called anytime
10129 during the OS initialization process. It allows the host to specify an
10131 of memory to be used to store the internal version of the RSDT/XSDT (root
10132 table). This allows the host to access ACPI tables before memory
10134 is initialized and running.
10135 - AcpiReallocateRootTable: Can be called after memory management is
10137 to copy the root table to a dynamically allocated array, freeing up the
10138 scratch memory specified in the call to AcpiInitializeTables.
10139 - AcpiSubsystemInitialize: This existing interface is independent of the
10140 Table Manager, and does not have to be called before the Table Manager
10142 be used, it only must be called before the rest of ACPICA can be used.
10143 - ACPI Tables: Some changes have been made to the names and structure of
10145 actbl.h and actbl1.h header files and may require changes to existing
10147 For example, bitfields have been completely removed because of their lack
10149 portability across C compilers.
10150 - Update interfaces to the Global Lock acquire/release macros if local
10151 versions are used. (see acwin.h)
10153 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
10155 New files: tbfind.c
10157 Example Code and Data Size: These are the sizes for the OS-independent
10158 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10159 debug version of the code includes the debug output trace mechanism and
10161 a much larger code and data size.
10164 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
10165 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
10167 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
10168 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
10171 2) iASL Compiler/Disassembler and Tools:
10173 No changes for this release.
10175 ----------------------------------------
10176 21 July 2006. Summary of changes for version 20060721:
10178 1) ACPI CA Core Subsystem:
10180 The full source code for the ASL test suite used to validate the iASL
10181 compiler and the ACPICA core subsystem is being released with the ACPICA
10182 source for the first time. The source is contained in a separate package
10184 consists of over 1100 files that exercise all ASL/AML operators. The
10186 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
10190 Completed a new design and implementation for support of the ACPI Global
10191 Lock. On the OS side, the global lock is now treated as a standard AML
10192 mutex. Previously, multiple OS threads could "acquire" the global lock
10193 simultaneously. However, this could cause the BIOS to be starved out of
10195 lock - especially in cases such as the Embedded Controller driver where
10196 there is a tight coupling between the OS and the BIOS.
10198 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
10199 The Global Lock interrupt handler no longer queues the execution of a
10200 separate thread to signal the global lock semaphore. Instead, the
10202 is signaled directly from the interrupt handler.
10204 Implemented support within the AML interpreter for package objects that
10205 contain a larger AML length (package list length) than the package
10207 count. In this case, the length of the package is truncated to match the
10208 package element count. Some BIOS code apparently modifies the package
10210 on the fly, and this change supports this behavior. Provides
10212 with the MS AML interpreter. (With assistance from Fiodor Suietov)
10214 Implemented a temporary fix for the BankValue parameter of a Bank Field
10216 support all constant values, now including the Zero and One opcodes.
10217 Evaluation of this parameter must eventually be converted to a full
10219 evaluation. A not-implemented error is now returned (temporarily) for
10221 constant values for this parameter.
10223 Fixed problem reports (Fiodor Suietov) integrated:
10224 - Fix for premature object deletion after CopyObject on Operation Region
10228 Example Code and Data Size: These are the sizes for the OS-independent
10229 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10230 debug version of the code includes the debug output trace mechanism and
10232 a much larger code and data size.
10235 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
10236 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
10238 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
10239 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
10242 2) iASL Compiler/Disassembler and Tools:
10244 No changes for this release.
10246 ----------------------------------------
10247 07 July 2006. Summary of changes for version 20060707:
10249 1) ACPI CA Core Subsystem:
10251 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
10252 that do not allow the initialization of address pointers within packed
10253 structures - even though the hardware itself may support misaligned
10254 transfers. Some of the debug data structures are packed by default to
10257 Added an error message for the case where AcpiOsGetThreadId() returns
10259 A non-zero value is required by the core ACPICA code to ensure the proper
10260 operation of AML mutexes and recursive control methods.
10262 The DSDT is now the only ACPI table that determines whether the AML
10263 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
10265 the hooks for per-table 32/64 switching have been removed from the code.
10267 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
10269 Fixed a possible leak of an OwnerID in the error path of
10270 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
10271 deletion to a single place in AcpiTbUninstallTable to correct possible
10273 when using the AcpiTbDeleteTablesByType interface (with assistance from
10276 Fixed a problem with Serialized control methods where the semaphore
10277 associated with the method could be over-signaled after multiple method
10280 Fixed two issues with the locking of the internal namespace data
10282 Both the Unload() operator and AcpiUnloadTable interface now lock the
10283 namespace during the namespace deletion associated with the table unload
10284 (with assistance from Linn Crosetto.)
10286 Fixed problem reports (Valery Podrezov) integrated:
10287 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
10289 Fixed problem reports (Fiodor Suietov) integrated:
10290 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
10291 - On Address Space handler deletion, needless deactivation call (BZ 374)
10292 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
10294 - Possible memory leak, Notify sub-objects of Processor, Power,
10297 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
10298 - Minimum Length of RSDT should be validated (BZ 379)
10299 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
10301 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
10305 Example Code and Data Size: These are the sizes for the OS-independent
10306 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10307 debug version of the code includes the debug output trace mechanism and
10309 a much larger code and data size.
10312 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
10313 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
10315 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
10316 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
10319 2) iASL Compiler/Disassembler and Tools:
10321 Fixed problem reports:
10322 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
10325 ----------------------------------------
10326 23 June 2006. Summary of changes for version 20060623:
10328 1) ACPI CA Core Subsystem:
10330 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
10331 allows the type to be customized to the host OS for improved efficiency
10332 (since a spinlock is usually a very small object.)
10334 Implemented support for "ignored" bits in the ACPI registers. According
10336 the ACPI specification, these bits should be preserved when writing the
10337 registers via a read/modify/write cycle. There are 3 bits preserved in
10339 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
10341 Implemented the initial deployment of new OSL mutex interfaces. Since
10343 host operating systems have separate mutex and semaphore objects, this
10344 feature was requested. The base code now uses mutexes (and the new mutex
10345 interfaces) wherever a binary semaphore was used previously. However, for
10346 the current release, the mutex interfaces are defined as macros to map
10348 to the existing semaphore interfaces. Therefore, no OSL changes are
10350 at this time. (See acpiosxf.h)
10352 Fixed several problems with the support for the control method SyncLevel
10353 parameter. The SyncLevel now works according to the ACPI specification
10355 in concert with the Mutex SyncLevel parameter, since the current
10357 is a property of the executing thread. Mutual exclusion for control
10359 is now implemented with a mutex instead of a semaphore.
10361 Fixed three instances of the use of the C shift operator in the bitfield
10362 support code (exfldio.c) to avoid the use of a shift value larger than
10364 target data width. The behavior of C compilers is undefined in this case
10366 can cause unpredictable results, and therefore the case must be detected
10368 avoided. (Fiodor Suietov)
10370 Added an info message whenever an SSDT or OEM table is loaded dynamically
10371 via the Load() or LoadTable() ASL operators. This should improve
10373 capability since it will show exactly what tables have been loaded
10375 the tables present in the RSDT/XSDT.)
10377 Example Code and Data Size: These are the sizes for the OS-independent
10378 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10379 debug version of the code includes the debug output trace mechanism and
10381 a much larger code and data size.
10384 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
10385 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
10387 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
10388 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
10391 2) iASL Compiler/Disassembler and Tools:
10393 No changes for this release.
10395 ----------------------------------------
10396 08 June 2006. Summary of changes for version 20060608:
10398 1) ACPI CA Core Subsystem:
10400 Converted the locking mutex used for the ACPI hardware to a spinlock.
10402 change should eliminate all problems caused by attempting to acquire a
10403 semaphore at interrupt level, and it means that all ACPICA external
10404 interfaces that directly access the ACPI hardware can be safely called
10406 interrupt level. OSL code that implements the semaphore interfaces should
10408 able to eliminate any workarounds for being called at interrupt level.
10410 Fixed a regression introduced in 20060526 where the ACPI device
10411 initialization could be prematurely aborted with an AE_NOT_FOUND if a
10413 did not have an optional _INI method.
10415 Fixed an IndexField issue where a write to the Data Register should be
10416 limited in size to the AccessSize (width) of the IndexField itself. (BZ
10420 Fixed problem reports (Valery Podrezov) integrated:
10421 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
10423 Fixed problem reports (Fiodor Suietov) integrated:
10424 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
10426 Removed four global mutexes that were obsolete and were no longer being
10429 Example Code and Data Size: These are the sizes for the OS-independent
10430 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10431 debug version of the code includes the debug output trace mechanism and
10433 a much larger code and data size.
10436 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10437 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10439 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
10440 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
10443 2) iASL Compiler/Disassembler and Tools:
10445 Fixed a fault when using -g option (get tables from registry) on Windows
10448 Fixed problem reports integrated:
10449 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
10450 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
10452 - Global table revision override (-r) is ignored (BZ 413)
10454 ----------------------------------------
10455 26 May 2006. Summary of changes for version 20060526:
10457 1) ACPI CA Core Subsystem:
10459 Restructured, flattened, and simplified the internal interfaces for
10460 namespace object evaluation - resulting in smaller code, less CPU stack
10462 and fewer interfaces. (With assistance from Mikhail Kouzmich)
10464 Fixed a problem with the CopyObject operator where the first parameter
10466 not typed correctly for the parser, interpreter, compiler, and
10468 Caused various errors and unexpected behavior.
10470 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
10471 produced incorrect results with some C compilers. Since the behavior of C
10472 compilers when the shift value is larger than the datatype width is
10473 apparently not well defined, the interpreter now detects this condition
10475 simply returns zero as expected in all such cases. (BZ 395)
10477 Fixed problem reports (Valery Podrezov) integrated:
10478 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
10479 - Allow interpreter to handle nested method declarations (BZ 5361)
10481 Fixed problem reports (Fiodor Suietov) integrated:
10482 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
10484 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
10486 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
10487 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
10488 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
10489 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
10490 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
10491 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
10492 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
10494 - Status of the Global Initialization Handler call not used (BZ 366)
10495 - Incorrect object parameter to Global Initialization Handler (BZ 367)
10497 Example Code and Data Size: These are the sizes for the OS-independent
10498 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10499 debug version of the code includes the debug output trace mechanism and
10501 a much larger code and data size.
10504 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10505 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10507 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10508 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10511 2) iASL Compiler/Disassembler and Tools:
10513 Modified the parser to allow the names IO, DMA, and IRQ to be used as
10514 namespace identifiers with no collision with existing resource descriptor
10515 macro names. This provides compatibility with other ASL compilers and is
10516 most useful for disassembly/recompilation of existing tables without
10518 errors. (With assistance from Thomas Renninger)
10520 Disassembler: fixed an incorrect disassembly problem with the
10521 DataTableRegion and CopyObject operators. Fixed a possible fault during
10522 disassembly of some Alias operators.
10524 ----------------------------------------
10525 12 May 2006. Summary of changes for version 20060512:
10527 1) ACPI CA Core Subsystem:
10529 Replaced the AcpiOsQueueForExecution interface with a new interface named
10530 AcpiOsExecute. The major difference is that the new interface does not
10532 a Priority parameter, this appeared to be useless and has been replaced
10535 Type parameter. The Type tells the host what type of execution is being
10536 requested, such as global lock handler, notify handler, GPE handler, etc.
10537 This allows the host to queue and execute the request as appropriate for
10539 request type, possibly using different work queues and different
10541 for the various request types. This enables fixes for multithreading
10542 deadlock problems such as BZ #5534, and will require changes to all
10544 OS interface layers. (Alexey Starikovskiy and Bob Moore)
10546 Fixed a possible memory leak associated with the support for the so-
10548 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
10551 Fixed a problem with the Load() operator where a table load from an
10552 operation region could overwrite an internal table buffer by up to 7
10554 and cause alignment faults on IPF systems. (With assistance from Luming
10557 Example Code and Data Size: These are the sizes for the OS-independent
10558 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10559 debug version of the code includes the debug output trace mechanism and
10561 a much larger code and data size.
10564 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10565 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10567 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10568 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10572 2) iASL Compiler/Disassembler and Tools:
10574 Disassembler: Implemented support to cross reference the internal
10576 and automatically generate ASL External() statements for symbols not
10578 within the current table being disassembled. This will simplify the
10579 disassembly and recompilation of interdependent tables such as SSDTs
10581 these statements will no longer have to be added manually.
10583 Disassembler: Implemented experimental support to automatically detect
10584 invocations of external control methods and generate appropriate
10586 statements. This is problematic because the AML cannot be correctly
10588 until the number of arguments for each control method is known.
10590 standalone method invocations and invocations as the source operand of a
10591 Store() statement are supported.
10593 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
10594 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
10595 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
10596 more readable and likely closer to the original ASL source.
10598 ----------------------------------------
10599 21 April 2006. Summary of changes for version 20060421:
10601 1) ACPI CA Core Subsystem:
10603 Removed a device initialization optimization introduced in 20051216 where
10604 the _STA method was not run unless an _INI was also present for the same
10605 device. This optimization could cause problems because it could allow
10607 methods to be run within a not-present device subtree. (If a not-present
10608 device had no _INI, _STA would not be run, the not-present status would
10610 be discovered, and the children of the device would be incorrectly
10613 Implemented a new _STA optimization where namespace subtrees that do not
10614 contain _INI are identified and ignored during device initialization.
10615 Selectively running _STA can significantly improve boot time on large
10616 machines (with assistance from Len Brown.)
10618 Implemented support for the device initialization case where the returned
10619 _STA flags indicate a device not-present but functioning. In this case,
10621 is not run, but the device children are examined for presence, as per the
10622 ACPI specification.
10624 Implemented an additional change to the IndexField support in order to
10625 conform to MS behavior. The value written to the Index Register is not
10626 simply a byte offset, it is a byte offset in units of the access width of
10627 the parent Index Field. (Fiodor Suietov)
10629 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
10630 interface is called during the creation of all AML operation regions, and
10631 allows the host OS to exert control over what addresses it will allow the
10632 AML code to access. Operation Regions whose addresses are disallowed will
10633 cause a runtime exception when they are actually accessed (will not
10635 or abort table loading.) See oswinxf or osunixxf for an example
10638 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
10639 interface allows the host OS to match the various "optional"
10640 interface/behavior strings for the _OSI predefined control method as
10641 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
10642 for an example implementation.
10644 Restructured and corrected various problems in the exception handling
10646 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
10647 (with assistance from Takayoshi Kochi.)
10649 Modified the Linux source converter to ignore quoted string literals
10651 converting identifiers from mixed to lower case. This will correct
10653 with the disassembler and other areas where such strings must not be
10656 The ACPI_FUNCTION_* macros no longer require quotes around the function
10657 name. This allows the Linux source converter to convert the names, now
10659 the converter ignores quoted strings.
10661 Example Code and Data Size: These are the sizes for the OS-independent
10662 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10663 debug version of the code includes the debug output trace mechanism and
10665 a much larger code and data size.
10669 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10670 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10672 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10673 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10676 2) iASL Compiler/Disassembler and Tools:
10678 Implemented 3 new warnings for iASL, and implemented multiple warning
10682 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
10684 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
10685 check for the possible timeout, a warning is issued.
10687 2) Useless operators: If an ASL operator does not specify an optional
10689 operand and it also does not use the function return value from the
10690 operator, a warning is issued since the operator effectively does
10693 3) Unreferenced objects: If a namespace object is created, but never
10694 referenced, a warning is issued. This is a warning level 2 since there
10696 cases where this is ok, such as when a secondary table is loaded that
10698 the unreferenced objects. Even so, care is taken to only flag objects
10700 don't look like they will ever be used. For example, the reserved methods
10701 (starting with an underscore) are usually not referenced because it is
10702 expected that the OS will invoke them.
10704 ----------------------------------------
10705 31 March 2006. Summary of changes for version 20060331:
10707 1) ACPI CA Core Subsystem:
10709 Implemented header file support for the following additional ACPI tables:
10710 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
10712 all current and known ACPI tables are now defined in the ACPICA headers
10714 are available for use by device drivers and other software.
10716 Implemented support to allow tables that contain ACPI names with invalid
10717 characters to be loaded. Previously, this would cause the table load to
10718 fail, but since there are several known cases of such tables on existing
10719 machines, this change was made to enable ACPI support for them. Also,
10721 matches the behavior of the Microsoft ACPI implementation.
10723 Fixed a couple regressions introduced during the memory optimization in
10725 20060317 release. The namespace node definition required additional
10726 reorganization and an internal datatype that had been changed to 8-bit
10728 restored to 32-bit. (Valery Podrezov)
10730 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
10731 could be passed through to AcpiOsReleaseObject which is unexpected. Such
10732 null pointers are now trapped and ignored, matching the behavior of the
10733 previous implementation before the deployment of AcpiOsReleaseObject.
10734 (Valery Podrezov, Fiodor Suietov)
10736 Fixed a memory mapping leak during the deletion of a SystemMemory
10738 region where a cached memory mapping was not deleted. This became a
10739 noticeable problem for operation regions that are defined within
10741 used control methods. (Dana Meyers)
10743 Reorganized the ACPI table header files into two main files: one for the
10744 ACPI tables consumed by the ACPICA core, and another for the
10746 ACPI tables that are consumed by the drivers and other software. The
10748 FADT definitions were merged into one common section and three different
10749 tables (ACPI 1.0, 1.0+, and 2.0)
10751 Example Code and Data Size: These are the sizes for the OS-independent
10752 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10753 debug version of the code includes the debug output trace mechanism and
10755 a much larger code and data size.
10758 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10759 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10761 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10762 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10765 2) iASL Compiler/Disassembler and Tools:
10767 Disassembler: Implemented support to decode and format all non-AML ACPI
10768 tables (tables other than DSDTs and SSDTs.) This includes the new tables
10769 added to the ACPICA headers, therefore all current and known ACPI tables
10773 Disassembler: The change to allow ACPI names with invalid characters also
10774 enables the disassembly of such tables. Invalid characters within names
10776 changed to '*' to make the name printable; the iASL compiler will still
10777 generate an error for such names, however, since this is an invalid ACPI
10780 Implemented an option for AcpiXtract (-a) to extract all tables found in
10782 input file. The default invocation extracts only the DSDTs and SSDTs.
10784 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
10785 makefile for the AcpiXtract utility.
10787 ----------------------------------------
10788 17 March 2006. Summary of changes for version 20060317:
10790 1) ACPI CA Core Subsystem:
10792 Implemented the use of a cache object for all internal namespace nodes.
10793 Since there are about 1000 static nodes in a typical system, this will
10794 decrease memory use for cache implementations that minimize per-
10796 overhead (such as a slab allocator.)
10798 Removed the reference count mechanism for internal namespace nodes, since
10800 was deemed unnecessary. This reduces the size of each namespace node by
10801 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10803 and 32 bytes for the 64-bit case.
10805 Optimized several internal data structures to reduce object size on 64-
10807 platforms by packing data within the 64-bit alignment. This includes the
10808 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10809 instances corresponding to the namespace objects.
10811 Added two new strings for the predefined _OSI method: "Windows 2001.1
10813 and "Windows 2006".
10815 Split the allocation tracking mechanism out to a separate file, from
10816 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10817 application-level code. Kernels may wish to not include uttrack.c in
10820 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10822 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10825 Code and Data Size: These are the sizes for the acpica.lib produced by
10827 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10829 driver or OSPM code. The debug version of the code includes the debug
10831 trace mechanism and has a much larger code and data size. Note that these
10832 values will vary depending on the efficiency of the compiler and the
10833 compiler options used during generation.
10836 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10837 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10839 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10840 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10843 2) iASL Compiler/Disassembler and Tools:
10845 Implemented an ANSI C version of the acpixtract utility. This version
10847 automatically extract the DSDT and all SSDTs from the input acpidump text
10848 file and dump the binary output to separate files. It can also display a
10849 summary of the input file including the headers for each table found and
10850 will extract any single ACPI table, with any signature. (See
10851 source/tools/acpixtract)
10853 ----------------------------------------
10854 10 March 2006. Summary of changes for version 20060310:
10856 1) ACPI CA Core Subsystem:
10858 Tagged all external interfaces to the subsystem with the new
10859 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10861 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10862 macro. The default definition is NULL.
10864 Added the ACPI_THREAD_ID type for the return value from
10866 This allows the host to define this as necessary to simplify kernel
10867 integration. The default definition is ACPI_NATIVE_UINT.
10869 Fixed two interpreter problems related to error processing, the deletion
10871 objects, and placing invalid pointers onto the internal operator result
10872 stack. BZ 6028, 6151 (Valery Podrezov)
10874 Increased the reference count threshold where a warning is emitted for
10876 reference counts in order to eliminate unnecessary warnings on systems
10878 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10881 Due to universal disagreement as to the meaning of the 'c' in the
10883 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10884 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10885 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10888 Code and Data Size: These are the sizes for the acpica.lib produced by
10890 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10892 driver or OSPM code. The debug version of the code includes the debug
10894 trace mechanism and has a much larger code and data size. Note that these
10895 values will vary depending on the efficiency of the compiler and the
10896 compiler options used during generation.
10899 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10900 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10902 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10903 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10906 2) iASL Compiler/Disassembler:
10908 Disassembler: implemented support for symbolic resource descriptor
10909 references. If a CreateXxxxField operator references a fixed offset
10912 resource descriptor, a name is assigned to the descriptor and the offset
10914 translated to the appropriate resource tag and pathname. The addition of
10915 this support brings the disassembled code very close to the original ASL
10916 source code and helps eliminate run-time errors when the disassembled
10918 is modified (and recompiled) in such a way as to invalidate the original
10921 Implemented support for a Descriptor Name as the last parameter to the
10923 Register() macro. This parameter was inadvertently left out of the ACPI
10924 specification, and will be added for ACPI 3.0b.
10926 Fixed a problem where the use of the "_OSI" string (versus the full path
10927 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10929 Fixed a problem with the error message that occurs when an invalid string
10931 used for a _HID object (such as one with an embedded asterisk:
10933 The correct message is now displayed.
10935 ----------------------------------------
10936 17 February 2006. Summary of changes for version 20060217:
10938 1) ACPI CA Core Subsystem:
10940 Implemented a change to the IndexField support to match the behavior of
10942 Microsoft AML interpreter. The value written to the Index register is now
10944 byte offset, no longer an index based upon the width of the Data
10946 This should fix IndexField problems seen on some machines where the Data
10947 register is not exactly one byte wide. The ACPI specification will be
10948 clarified on this point.
10950 Fixed a problem where several resource descriptor types could overrun the
10951 internal descriptor buffer due to size miscalculation: VendorShort,
10952 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10953 affect all platforms.
10955 Fixed a problem where individual resource descriptors were misaligned
10957 the internal buffer, causing alignment faults on IA64 platforms.
10959 Code and Data Size: These are the sizes for the acpica.lib produced by
10961 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10963 driver or OSPM code. The debug version of the code includes the debug
10965 trace mechanism and has a much larger code and data size. Note that these
10966 values will vary depending on the efficiency of the compiler and the
10967 compiler options used during generation.
10970 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10971 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10973 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10974 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10977 2) iASL Compiler/Disassembler:
10979 Implemented support for new reserved names: _WDG and _WED are Microsoft
10980 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10981 defined method (Throttling Depth Limit.)
10983 Fixed a problem where a zero-length VendorShort or VendorLong resource
10984 descriptor was incorrectly emitted as a descriptor of length one.
10986 ----------------------------------------
10987 10 February 2006. Summary of changes for version 20060210:
10989 1) ACPI CA Core Subsystem:
10991 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10992 normal execution. These became apparent after the conversion from
10995 Fixed a problem where the CreateField operator could hang if the BitIndex
10997 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10999 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
11000 failed with an exception. This also fixes a couple of related RefOf and
11001 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
11003 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
11005 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
11009 Implemented a memory cleanup at the end of the execution of each
11011 of an AML While() loop, preventing the accumulation of outstanding
11013 (Valery Podrezov, BZ 5427)
11015 Eliminated a chunk of duplicate code in the object resolution code.
11019 Fixed several warnings during the 64-bit code generation.
11021 The AcpiSrc source code conversion tool now inserts one line of
11023 after an if() statement that is followed immediately by a comment,
11025 readability of the Linux code.
11027 Code and Data Size: The current and previous library sizes for the core
11028 subsystem are shown below. These are the code and data sizes for the
11029 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11031 values do not include any ACPI driver or OSPM code. The debug version of
11033 code includes the debug output trace mechanism and has a much larger code
11034 and data size. Note that these values will vary depending on the
11036 of the compiler and the compiler options used during generation.
11039 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
11040 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
11042 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
11043 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
11046 2) iASL Compiler/Disassembler:
11048 Fixed a problem with the disassembly of a BankField operator with a
11050 expression for the BankValue parameter.
11052 ----------------------------------------
11053 27 January 2006. Summary of changes for version 20060127:
11055 1) ACPI CA Core Subsystem:
11057 Implemented support in the Resource Manager to allow unresolved
11059 references within resource package objects for the _PRT method. This
11061 is in addition to the previously implemented unresolved reference support
11062 within the AML parser. If the interpreter slack mode is enabled, these
11063 unresolved references will be passed through to the caller as a NULL
11067 Implemented and deployed new macros and functions for error and warning
11068 messages across the subsystem. These macros are simpler and generate less
11069 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
11070 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
11071 macros remain defined to allow ACPI drivers time to migrate to the new
11074 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
11076 Acquire/Release Lock OSL interfaces.
11078 Fixed a problem where Alias ASL operators are sometimes not correctly
11079 resolved, in both the interpreter and the iASL compiler.
11081 Fixed several problems with the implementation of the
11082 ConcatenateResTemplate
11083 ASL operator. As per the ACPI specification, zero length buffers are now
11084 treated as a single EndTag. One-length buffers always cause a fatal
11085 exception. Non-zero length buffers that do not end with a full 2-byte
11087 cause a fatal exception.
11089 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
11090 interface. (With assistance from Thomas Renninger)
11092 Code and Data Size: The current and previous library sizes for the core
11093 subsystem are shown below. These are the code and data sizes for the
11094 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11096 values do not include any ACPI driver or OSPM code. The debug version of
11098 code includes the debug output trace mechanism and has a much larger code
11099 and data size. Note that these values will vary depending on the
11101 of the compiler and the compiler options used during generation.
11104 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
11105 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
11107 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
11108 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
11111 2) iASL Compiler/Disassembler:
11113 Fixed an internal error that was generated for any forward references to
11117 ----------------------------------------
11118 13 January 2006. Summary of changes for version 20060113:
11120 1) ACPI CA Core Subsystem:
11122 Added 2006 copyright to all module headers and signons. This affects
11123 virtually every file in the ACPICA core subsystem, iASL compiler, and the
11126 Enhanced the ACPICA error reporting in order to simplify user migration
11128 the non-debug version of ACPICA. Replaced all instances of the
11129 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
11131 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
11132 respectively. This preserves all error and warning messages in the non-
11134 version of the ACPICA code (this has been referred to as the "debug lite"
11135 option.) Over 200 cases were converted to create a total of over 380
11136 error/warning messages across the ACPICA code. This increases the code
11138 data size of the default non-debug version of the code somewhat (about
11140 but all error/warning reporting may be disabled if desired (and code
11141 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
11142 configuration option. The size of the debug version of ACPICA remains
11146 Fixed a memory leak within the AML Debugger "Set" command. One object was
11147 not properly deleted for every successful invocation of the command.
11149 Code and Data Size: The current and previous library sizes for the core
11150 subsystem are shown below. These are the code and data sizes for the
11151 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11153 values do not include any ACPI driver or OSPM code. The debug version of
11155 code includes the debug output trace mechanism and has a much larger code
11156 and data size. Note that these values will vary depending on the
11158 of the compiler and the compiler options used during generation.
11161 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
11162 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
11164 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
11165 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
11168 2) iASL Compiler/Disassembler:
11170 The compiler now officially supports the ACPI 3.0a specification that was
11171 released on December 30, 2005. (Specification is available at
11174 ----------------------------------------
11175 16 December 2005. Summary of changes for version 20051216:
11177 1) ACPI CA Core Subsystem:
11179 Implemented optional support to allow unresolved names within ASL Package
11180 objects. A null object is inserted in the package when a named reference
11181 cannot be located in the current namespace. Enabled via the interpreter
11182 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
11184 that contain such code.
11186 Implemented an optimization to the initialization sequence that can
11188 boot time. During ACPI device initialization, the _STA method is now run
11190 and only if the _INI method exists. The _STA method is used to determine
11192 the device is present; An _INI can only be run if _STA returns present,
11194 it is a waste of time to run the _STA method if the _INI does not exist.
11195 (Prototype and assistance from Dong Wei)
11197 Implemented use of the C99 uintptr_t for the pointer casting macros if it
11199 available in the current compiler. Otherwise, the default (void *) cast
11203 Fixed some possible memory leaks found within the execution path of the
11204 Break, Continue, If, and CreateField operators. (Valery Podrezov)
11206 Fixed a problem introduced in the 20051202 release where an exception is
11207 generated during method execution if a control method attempts to declare
11210 Moved resource descriptor string constants that are used by both the AML
11211 disassembler and AML debugger to the common utilities directory so that
11212 these components are independent.
11214 Implemented support in the AcpiExec utility (-e switch) to globally
11216 exceptions during control method execution (method is not aborted.)
11218 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
11221 Code and Data Size: The current and previous library sizes for the core
11222 subsystem are shown below. These are the code and data sizes for the
11223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11225 values do not include any ACPI driver or OSPM code. The debug version of
11227 code includes the debug output trace mechanism and has a much larger code
11228 and data size. Note that these values will vary depending on the
11230 of the compiler and the compiler options used during generation.
11233 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11234 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
11236 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
11237 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
11240 2) iASL Compiler/Disassembler:
11242 Fixed a problem where a CPU stack overflow fault could occur if a
11244 method call was made from within a Return statement.
11246 ----------------------------------------
11247 02 December 2005. Summary of changes for version 20051202:
11249 1) ACPI CA Core Subsystem:
11251 Modified the parsing of control methods to no longer create namespace
11252 objects during the first pass of the parse. Objects are now created only
11253 during the execute phase, at the moment the namespace creation operator
11255 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
11257 should eliminate ALREADY_EXISTS exceptions seen on some machines where
11258 reentrant control methods are protected by an AML mutex. The mutex will
11260 correctly block multiple threads from attempting to create the same
11264 Increased the number of available Owner Ids for namespace object tracking
11265 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
11267 some machines with a large number of ACPI tables (either static or
11270 Fixed a problem with the AcpiExec utility where a fault could occur when
11272 -b switch (batch mode) is used.
11274 Enhanced the namespace dump routine to output the owner ID for each
11277 Code and Data Size: The current and previous library sizes for the core
11278 subsystem are shown below. These are the code and data sizes for the
11279 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11281 values do not include any ACPI driver or OSPM code. The debug version of
11283 code includes the debug output trace mechanism and has a much larger code
11284 and data size. Note that these values will vary depending on the
11286 of the compiler and the compiler options used during generation.
11289 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11290 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11292 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11293 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
11296 2) iASL Compiler/Disassembler:
11298 Fixed a parse error during compilation of certain Switch/Case constructs.
11300 simplify the parse, the grammar now allows for multiple Default
11302 and this error is now detected and flagged during the analysis phase.
11304 Disassembler: The disassembly now includes the contents of the original
11305 table header within a comment at the start of the file. This includes the
11306 name and version of the original ASL compiler.
11308 ----------------------------------------
11309 17 November 2005. Summary of changes for version 20051117:
11311 1) ACPI CA Core Subsystem:
11313 Fixed a problem in the AML parser where the method thread count could be
11314 decremented below zero if any errors occurred during the method parse
11316 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
11318 This also fixed a related regression with the mechanism that detects and
11319 corrects methods that cannot properly handle reentrancy (related to the
11320 deployment of the new OwnerId mechanism.)
11322 Eliminated the pre-parsing of control methods (to detect errors) during
11323 table load. Related to the problem above, this was causing unwind issues
11325 any errors occurred during the parse, and it seemed to be overkill. A
11327 load should not be aborted if there are problems with any single control
11328 method, thus rendering this feature rather pointless.
11330 Fixed a problem with the new table-driven resource manager where an
11332 buffer overflow could occur for small resource templates.
11334 Implemented a new external interface, AcpiGetVendorResource. This
11336 will find and return a vendor-defined resource descriptor within a _CRS
11338 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
11341 Removed the length limit (200) on string objects as per the upcoming ACPI
11342 3.0A specification. This affects the following areas of the interpreter:
11344 any implicit conversion of a Buffer to a String, 2) a String object
11346 of the ASL Concatentate operator, 3) the String object result of the ASL
11349 Fixed a problem in the Windows OS interface layer (OSL) where a
11351 on a semaphore object would incorrectly timeout. This allows the
11352 multithreading features of the AcpiExec utility to work properly under
11355 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
11356 the recently added file named "utresrc.c".
11358 Code and Data Size: The current and previous library sizes for the core
11359 subsystem are shown below. These are the code and data sizes for the
11360 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11362 values do not include any ACPI driver or OSPM code. The debug version of
11364 code includes the debug output trace mechanism and has a much larger code
11365 and data size. Note that these values will vary depending on the
11367 of the compiler and the compiler options used during generation.
11370 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
11371 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11373 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11374 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11377 2) iASL Compiler/Disassembler:
11379 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
11380 specification. For the iASL compiler, this means that string literals
11382 the source ASL can be of any length.
11384 Enhanced the listing output to dump the AML code for resource descriptors
11385 immediately after the ASL code for each descriptor, instead of in a block
11387 the end of the entire resource template.
11389 Enhanced the compiler debug output to dump the entire original parse tree
11390 constructed during the parse phase, before any transforms are applied to
11392 tree. The transformed tree is dumped also.
11394 ----------------------------------------
11395 02 November 2005. Summary of changes for version 20051102:
11397 1) ACPI CA Core Subsystem:
11399 Modified the subsystem initialization sequence to improve GPE support.
11401 GPE initialization has been split into two parts in order to defer
11403 of the _PRW methods (Power Resources for Wake) until after the hardware
11405 fully initialized and the SCI handler is installed. This allows the _PRW
11406 methods to access fields protected by the Global Lock. This will fix
11408 where a NO_GLOBAL_LOCK exception has been seen during initialization.
11410 Converted the ACPI internal object disassemble and display code within
11412 AML debugger to fully table-driven operation, reducing code size and
11413 increasing maintainability.
11415 Fixed a regression with the ConcatenateResTemplate() ASL operator
11417 in the 20051021 release.
11419 Implemented support for "local" internal ACPI object types within the
11420 debugger "Object" command and the AcpiWalkNamespace external interfaces.
11421 These local types include RegionFields, BankFields, IndexFields, Alias,
11425 Moved common AML resource handling code into a new file, "utresrc.c".
11427 code is shared by both the Resource Manager and the AML Debugger.
11429 Code and Data Size: The current and previous library sizes for the core
11430 subsystem are shown below. These are the code and data sizes for the
11431 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11433 values do not include any ACPI driver or OSPM code. The debug version of
11435 code includes the debug output trace mechanism and has a much larger code
11436 and data size. Note that these values will vary depending on the
11438 of the compiler and the compiler options used during generation.
11441 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11442 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11444 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
11445 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11448 2) iASL Compiler/Disassembler:
11450 Fixed a problem with very large initializer lists (more than 4000
11452 for both Buffer and Package objects where the parse stack could overflow.
11454 Enhanced the pre-compile source code scan for non-ASCII characters to
11456 characters within comment fields. The scan is now always performed and is
11458 longer optional, detecting invalid characters within a source file
11459 immediately rather than during the parse phase or later.
11461 Enhanced the ASL grammar definition to force early reductions on all
11463 style grammar elements so that the overall parse stack usage is greatly
11464 reduced. This should improve performance and reduce the possibility of
11468 Eliminated all reduce/reduce conflicts in the iASL parser generation.
11470 with the addition of a %expected statement, the compiler generates from
11471 source with no warnings.
11473 Fixed a possible segment fault in the disassembler if the input filename
11474 does not contain a "dot" extension (Thomas Renninger).
11476 ----------------------------------------
11477 21 October 2005. Summary of changes for version 20051021:
11479 1) ACPI CA Core Subsystem:
11481 Implemented support for the EM64T and other x86-64 processors. This
11482 essentially entails recognizing that these processors support non-aligned
11483 memory transfers. Previously, all 64-bit processors were assumed to lack
11484 hardware support for non-aligned transfers.
11486 Completed conversion of the Resource Manager to nearly full table-driven
11487 operation. Specifically, the resource conversion code (convert AML to
11488 internal format and the reverse) and the debug code to dump internal
11489 resource descriptors are fully table-driven, reducing code and data size
11491 improving maintainability.
11493 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
11495 on 64-bit processors instead of a fixed 32-bit word. (With assistance
11497 Alexey Starikovskiy)
11499 Implemented support within the resource conversion code for the Type-
11500 Specific byte within the various ACPI 3.0 *WordSpace macros.
11502 Fixed some issues within the resource conversion code for the type-
11504 flags for both Memory and I/O address resource descriptors. For Memory,
11505 implemented support for the MTP and TTP flags. For I/O, split the TRS and
11506 TTP flags into two separate fields.
11508 Code and Data Size: The current and previous library sizes for the core
11509 subsystem are shown below. These are the code and data sizes for the
11510 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11512 values do not include any ACPI driver or OSPM code. The debug version of
11514 code includes the debug output trace mechanism and has a much larger code
11515 and data size. Note that these values will vary depending on the
11517 of the compiler and the compiler options used during generation.
11520 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11521 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11523 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11524 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11528 2) iASL Compiler/Disassembler:
11530 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
11532 corresponding ResourceSource string was not also present in a resource
11533 descriptor declaration. This restriction caused problems with existing
11534 AML/ASL code that includes the Index byte without the string. When such
11536 was disassembled, it could not be compiled without modification. Further,
11537 the modified code created a resource template with a different size than
11539 original, breaking code that used fixed offsets into the resource
11543 Removed a recent feature of the disassembler to ignore a lone
11545 byte. This byte is now emitted if present so that the exact AML can be
11546 reproduced when the disassembled code is recompiled.
11548 Improved comments and text alignment for the resource descriptor code
11549 emitted by the disassembler.
11551 Implemented disassembler support for the ACPI 3.0 AccessSize field within
11553 Register() resource descriptor.
11555 ----------------------------------------
11556 30 September 2005. Summary of changes for version 20050930:
11558 1) ACPI CA Core Subsystem:
11560 Completed a major overhaul of the Resource Manager code - specifically,
11561 optimizations in the area of the AML/internal resource conversion code.
11563 code has been optimized to simplify and eliminate duplicated code, CPU
11565 use has been decreased by optimizing function parameters and local
11566 variables, and naming conventions across the manager have been
11568 for clarity and ease of maintenance (this includes function, parameter,
11569 variable, and struct/typedef names.) The update may force changes in some
11570 driver code, depending on how resources are handled by the host OS.
11572 All Resource Manager dispatch and information tables have been moved to a
11573 single location for clarity and ease of maintenance. One new file was
11574 created, named "rsinfo.c".
11576 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
11577 guarantee that the argument is not evaluated twice, making them less
11579 to macro side-effects. However, since there exists the possibility of
11580 additional stack use if a particular compiler cannot optimize them (such
11582 in the debug generation case), the original macros are optionally
11584 Note that some invocations of the return_VALUE macro may now cause size
11585 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
11587 eliminate these. (From Randy Dunlap)
11589 Implemented a new mechanism to enable debug tracing for individual
11591 methods. A new external interface, AcpiDebugTrace, is provided to enable
11592 this mechanism. The intent is to allow the host OS to easily enable and
11593 disable tracing for problematic control methods. This interface can be
11594 easily exposed to a user or debugger interface if desired. See the file
11595 psxface.c for details.
11597 AcpiUtCallocate will now return a valid pointer if a length of zero is
11598 specified - a length of one is used and a warning is issued. This matches
11599 the behavior of AcpiUtAllocate.
11601 Code and Data Size: The current and previous library sizes for the core
11602 subsystem are shown below. These are the code and data sizes for the
11603 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11605 values do not include any ACPI driver or OSPM code. The debug version of
11607 code includes the debug output trace mechanism and has a much larger code
11608 and data size. Note that these values will vary depending on the
11610 of the compiler and the compiler options used during generation.
11613 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11614 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11616 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11617 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11620 2) iASL Compiler/Disassembler:
11622 A remark is issued if the effective compile-time length of a package or
11623 buffer is zero. Previously, this was a warning.
11625 ----------------------------------------
11626 16 September 2005. Summary of changes for version 20050916:
11628 1) ACPI CA Core Subsystem:
11630 Fixed a problem within the Resource Manager where support for the Generic
11631 Register descriptor was not fully implemented. This descriptor is now
11633 recognized, parsed, disassembled, and displayed.
11635 Completely restructured the Resource Manager code to utilize table-driven
11636 dispatch and lookup, eliminating many of the large switch() statements.
11638 reduces overall subsystem code size and code complexity. Affects the
11639 resource parsing and construction, disassembly, and debug dump output.
11641 Cleaned up and restructured the debug dump output for all resource
11642 descriptors. Improved readability of the output and reduced code size.
11644 Fixed a problem where changes to internal data structures caused the
11645 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
11647 Code and Data Size: The current and previous library sizes for the core
11648 subsystem are shown below. These are the code and data sizes for the
11649 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11651 values do not include any ACPI driver or OSPM code. The debug version of
11653 code includes the debug output trace mechanism and has a much larger code
11654 and data size. Note that these values will vary depending on the
11656 of the compiler and the compiler options used during generation.
11659 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11660 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11662 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11663 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11666 2) iASL Compiler/Disassembler:
11668 Updated the disassembler to automatically insert an EndDependentFn()
11670 into the ASL stream if this macro is missing in the original AML code,
11671 simplifying compilation of the resulting ASL module.
11673 Fixed a problem in the disassembler where a disassembled ResourceSource
11674 string (within a large resource descriptor) was not surrounded by quotes
11676 not followed by a comma, causing errors when the resulting ASL module was
11677 compiled. Also, escape sequences within a ResourceSource string are now
11678 handled correctly (especially "\\")
11680 ----------------------------------------
11681 02 September 2005. Summary of changes for version 20050902:
11683 1) ACPI CA Core Subsystem:
11685 Fixed a problem with the internal Owner ID allocation and deallocation
11686 mechanisms for control method execution and recursive method invocation.
11687 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
11688 messages seen on some systems. Recursive method invocation depth is
11689 currently limited to 255. (Alexey Starikovskiy)
11691 Completely eliminated all vestiges of support for the "module-level
11692 executable code" until this support is fully implemented and debugged.
11694 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
11695 some systems that invoke this support.
11697 Fixed a problem within the resource manager code where the transaction
11699 for a 64-bit address descriptor were handled incorrectly in the type-
11700 specific flag byte.
11702 Consolidated duplicate code within the address descriptor resource
11704 code, reducing overall subsystem code size.
11706 Fixed a fault when using the AML debugger "disassemble" command to
11707 disassemble individual control methods.
11709 Removed references to the "release_current" directory within the Unix
11712 Code and Data Size: The current and previous core subsystem library sizes
11713 are shown below. These are the code and data sizes for the acpica.lib
11714 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
11715 include any ACPI driver or OSPM code. The debug version of the code
11717 the debug output trace mechanism and has a much larger code and data
11719 Note that these values will vary depending on the efficiency of the
11721 and the compiler options used during generation.
11724 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11725 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11727 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11728 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11731 2) iASL Compiler/Disassembler:
11733 Implemented an error check for illegal duplicate values in the interrupt
11735 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
11738 Implemented error checking for the Irq() and IrqNoFlags() macros to
11740 too many values in the interrupt list (16 max) and invalid values in the
11741 list (range 0 - 15)
11743 The maximum length string literal within an ASL file is now restricted to
11744 200 characters as per the ACPI specification.
11746 Fixed a fault when using the -ln option (generate namespace listing).
11748 Implemented an error check to determine if a DescriptorName within a
11749 resource descriptor has already been used within the current scope.
11751 ----------------------------------------
11752 15 August 2005. Summary of changes for version 20050815:
11754 1) ACPI CA Core Subsystem:
11756 Implemented a full bytewise compare to determine if a table load request
11758 attempting to load a duplicate table. The compare is performed if the
11760 signatures and table lengths match. This will allow different tables with
11761 the same OEM Table ID and revision to be loaded - probably against the
11763 specification, but discovered in the field nonetheless.
11765 Added the changes.txt logfile to each of the zipped release packages.
11767 Code and Data Size: Current and previous core subsystem library sizes are
11768 shown below. These are the code and data sizes for the acpica.lib
11770 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11771 any ACPI driver or OSPM code. The debug version of the code includes the
11772 debug output trace mechanism and has a much larger code and data size.
11774 that these values will vary depending on the efficiency of the compiler
11776 the compiler options used during generation.
11779 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11780 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11782 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11783 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11786 2) iASL Compiler/Disassembler:
11788 Fixed a problem where incorrect AML code could be generated for Package
11789 objects if optimization is disabled (via the -oa switch).
11791 Fixed a problem with where incorrect AML code is generated for variable-
11792 length packages when the package length is not specified and the number
11794 initializer values is greater than 255.
11797 ----------------------------------------
11798 29 July 2005. Summary of changes for version 20050729:
11800 1) ACPI CA Core Subsystem:
11802 Implemented support to ignore an attempt to install/load a particular
11804 table more than once. Apparently there exists BIOS code that repeatedly
11805 attempts to load the same SSDT upon certain events. With assistance from
11806 Venkatesh Pallipadi.
11808 Restructured the main interface to the AML parser in order to correctly
11809 handle all exceptional conditions. This will prevent leakage of the
11811 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11813 machines. With assistance from Alexey Starikovskiy.
11815 Support for "module level code" has been disabled in this version due to
11817 number of issues that have appeared on various machines. The support can
11819 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11820 compilation. When the issues are fully resolved, the code will be enabled
11824 Modified the internal functions for debug print support to define the
11825 FunctionName parameter as a (const char *) for compatibility with
11827 built-in macros such as __FUNCTION__, etc.
11829 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11831 Implemented support to display an object count summary for the AML
11833 commands Object and Methods.
11835 Code and Data Size: Current and previous core subsystem library sizes are
11836 shown below. These are the code and data sizes for the acpica.lib
11838 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11839 any ACPI driver or OSPM code. The debug version of the code includes the
11840 debug output trace mechanism and has a much larger code and data size.
11842 that these values will vary depending on the efficiency of the compiler
11844 the compiler options used during generation.
11847 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11848 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11850 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11851 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11854 2) iASL Compiler/Disassembler:
11856 Fixed a regression that appeared in the 20050708 version of the compiler
11857 where an error message was inadvertently emitted for invocations of the
11859 reserved control method.
11861 ----------------------------------------
11862 08 July 2005. Summary of changes for version 20050708:
11864 1) ACPI CA Core Subsystem:
11866 The use of the CPU stack in the debug version of the subsystem has been
11867 considerably reduced. Previously, a debug structure was declared in every
11868 function that used the debug macros. This structure has been removed in
11869 favor of declaring the individual elements as parameters to the debug
11870 functions. This reduces the cumulative stack use during nested execution
11872 ACPI function calls at the cost of a small increase in the code size of
11874 debug version of the subsystem. With assistance from Alexey Starikovskiy
11878 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11879 headers to define a macro that will return the current function name at
11880 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11882 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11883 compiler-dependent header, the function name is saved on the CPU stack
11885 pointer per function.) This mechanism is used because apparently there
11886 exists no standard ANSI-C defined macro that that returns the function
11889 Redesigned and reimplemented the "Owner ID" mechanism used to track
11890 namespace objects created/deleted by ACPI tables and control method
11891 execution. A bitmap is now used to allocate and free the IDs, thus
11893 the wraparound problem present in the previous implementation. The size
11895 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11898 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11900 flag definitions within the headers for the predefined ACPI tables. These
11901 have been replaced by UINT8_BIT in order to increase the code portability
11903 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11904 eliminate bitfields entirely because of a lack of portability.
11906 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11908 is a frequently used function and this improvement increases the
11910 of the entire subsystem (Alexey Starikovskiy).
11912 Fixed several possible memory leaks and the inverse - premature object
11913 deletion (Alexey Starikovskiy).
11915 Code and Data Size: Current and previous core subsystem library sizes are
11916 shown below. These are the code and data sizes for the acpica.lib
11918 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11919 any ACPI driver or OSPM code. The debug version of the code includes the
11920 debug output trace mechanism and has a much larger code and data size.
11922 that these values will vary depending on the efficiency of the compiler
11924 the compiler options used during generation.
11927 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11928 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11930 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11931 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11933 ----------------------------------------
11934 24 June 2005. Summary of changes for version 20050624:
11936 1) ACPI CA Core Subsystem:
11938 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11939 the host-defined cache object. This allows the OSL implementation to
11941 and type this object in any manner desired, simplifying the OSL
11942 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11943 Linux, and should be defined in the OS-specific header file for other
11944 operating systems as required.
11946 Changed the interface to AcpiOsAcquireObject to directly return the
11947 requested object as the function return (instead of ACPI_STATUS.) This
11948 change was made for performance reasons, since this is the purpose of the
11949 interface in the first place. AcpiOsAcquireObject is now similar to the
11950 AcpiOsAllocate interface.
11952 Implemented a new AML debugger command named Businfo. This command
11954 information about all devices that have an associate _PRT object. The
11956 _HID, _UID, and _CID are displayed for these devices.
11958 Modified the initialization sequence in AcpiInitializeSubsystem to call
11960 OSL interface AcpiOslInitialize first, before any local initialization.
11962 change was required because the global initialization now calls OSL
11965 Enhanced the Dump command to display the entire contents of Package
11967 (including all sub-objects and their values.)
11969 Restructured the code base to split some files because of size and/or
11970 because the code logically belonged in a separate file. New files are
11972 below. All makefiles and project files included in the ACPI CA release
11975 utilities/utcache.c /* Local cache interfaces */
11976 utilities/utmutex.c /* Local mutex support */
11977 utilities/utstate.c /* State object support */
11978 interpreter/parser/psloop.c /* Main AML parse loop */
11980 Code and Data Size: Current and previous core subsystem library sizes are
11981 shown below. These are the code and data sizes for the acpica.lib
11983 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11984 any ACPI driver or OSPM code. The debug version of the code includes the
11985 debug output trace mechanism and has a much larger code and data size.
11987 that these values will vary depending on the efficiency of the compiler
11989 the compiler options used during generation.
11992 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11993 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11995 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11996 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11999 2) iASL Compiler/Disassembler:
12001 Fixed a regression introduced in version 20050513 where the use of a
12003 object within a Case() statement caused a compile time exception. The
12004 original behavior has been restored (a Match() operator is emitted.)
12006 ----------------------------------------
12007 17 June 2005. Summary of changes for version 20050617:
12009 1) ACPI CA Core Subsystem:
12011 Moved the object cache operations into the OS interface layer (OSL) to
12013 the host OS to handle these operations if desired (for example, the Linux
12014 OSL will invoke the slab allocator). This support is optional; the
12016 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
12018 code in the ACPI CA core. The new OSL interfaces are shown below. See
12019 utalloc.c for an example implementation, and acpiosxf.h for the exact
12020 interface definitions. With assistance from Alexey Starikovskiy.
12024 AcpiOsAcquireObject
12025 AcpiOsReleaseObject
12027 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
12029 and restore a flags parameter. This fits better with many OS lock models.
12030 Note: the current execution state (interrupt handler or not) is no longer
12031 passed to these interfaces. If necessary, the OSL must determine this
12033 by itself, a simple and fast operation. With assistance from Alexey
12036 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
12037 present if the revision of the RSDP was 2 or greater. According to the
12039 specification, the XSDT is optional in all cases, and the table manager
12040 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
12041 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
12045 Fixed an interpreter problem with the Mid() operator in the case of an
12047 string where the resulting output string is of zero length. It now
12049 returns a valid, null terminated string object instead of a string object
12050 with a null pointer.
12052 Fixed a problem with the control method argument handling to allow a
12054 to an Arg object that already contains an object of type Device. The
12056 object is now correctly overwritten. Previously, an error was returned.
12059 Enhanced the debugger Find command to emit object values in addition to
12061 found object pathnames. The output format is the same as the dump
12065 Enhanced the debugger Set command. It now has the ability to set the
12067 of any Named integer object in the namespace (Previously, only method
12069 and args could be set.)
12071 Code and Data Size: Current and previous core subsystem library sizes are
12072 shown below. These are the code and data sizes for the acpica.lib
12074 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12075 any ACPI driver or OSPM code. The debug version of the code includes the
12076 debug output trace mechanism and has a much larger code and data size.
12078 that these values will vary depending on the efficiency of the compiler
12080 the compiler options used during generation.
12083 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
12084 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
12086 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
12087 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
12090 2) iASL Compiler/Disassembler:
12092 Fixed a regression in the disassembler where if/else/while constructs
12094 output incorrectly. This problem was introduced in the previous release
12095 (20050526). This problem also affected the single-step disassembly in the
12098 Fixed a problem where compiling the reserved _OSI method would randomly
12100 rarely) produce compile errors.
12102 Enhanced the disassembler to emit compilable code in the face of
12104 AML resource descriptors. If the optional ResourceSourceIndex is present,
12105 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
12106 disassembly. Otherwise, the resulting code cannot be compiled without
12109 ----------------------------------------
12110 26 May 2005. Summary of changes for version 20050526:
12112 1) ACPI CA Core Subsystem:
12114 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
12115 the module level (not within a control method.) These opcodes are
12117 exactly once at the time the table is loaded. This type of code was legal
12119 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
12121 order to provide backwards compatibility with earlier BIOS
12123 This eliminates the "Encountered executable code at module level" warning
12124 that was previously generated upon detection of such code.
12126 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
12127 inadvertently be generated during the lookup of namespace objects in the
12128 second pass parse of ACPI tables and control methods. It appears that
12130 problem could occur during the resolution of forward references to
12134 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
12135 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
12136 allows the deadlock detection debug code to be compiled out in the normal
12137 case, improving mutex performance (and overall subsystem performance)
12140 Implemented a handful of miscellaneous fixes for possible memory leaks on
12141 error conditions and error handling control paths. These fixes were
12142 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
12144 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
12146 to prevent a fault in this error case.
12148 Code and Data Size: Current and previous core subsystem library sizes are
12149 shown below. These are the code and data sizes for the acpica.lib
12151 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12152 any ACPI driver or OSPM code. The debug version of the code includes the
12153 debug output trace mechanism and has a much larger code and data size.
12155 that these values will vary depending on the efficiency of the compiler
12157 the compiler options used during generation.
12160 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
12161 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
12163 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
12164 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
12167 2) iASL Compiler/Disassembler:
12169 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
12170 the module level (not within a control method.) These operators will be
12171 executed once at the time the table is loaded. This type of code was
12173 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
12174 compiler in order to provide backwards compatibility with earlier BIOS
12178 The ACPI integer width (specified via the table revision ID or the -r
12179 override, 32 or 64 bits) is now used internally during compile-time
12181 folding to ensure that constants are truncated to 32 bits if necessary.
12182 Previously, the revision ID value was only emitted in the AML table
12185 An error message is now generated for the Mutex and Method operators if
12187 SyncLevel parameter is outside the legal range of 0 through 15.
12189 Fixed a problem with the Method operator ParameterTypes list handling
12191 3.0). Previously, more than 2 types or 2 arguments generated a syntax
12193 The actual underlying implementation of method argument typechecking is
12194 still under development, however.
12196 ----------------------------------------
12197 13 May 2005. Summary of changes for version 20050513:
12199 1) ACPI CA Core Subsystem:
12201 Implemented support for PCI Express root bridges -- added support for
12203 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
12205 The interpreter now automatically truncates incoming 64-bit constants to
12207 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
12209 also affects the iASL compiler constant folding. (Note: as per below, the
12210 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
12212 Fixed a problem where string and buffer objects with "static" pointers
12213 (pointers to initialization data within an ACPI table) were not handled
12214 consistently. The internal object copy operation now always copies the
12216 to a newly allocated buffer, regardless of whether the source object is
12219 Fixed a problem with the FromBCD operator where an implicit result
12220 conversion was improperly performed while storing the result to the
12222 operand. Since this is an "explicit conversion" operator, the implicit
12223 conversion should never be performed on the output.
12225 Fixed a problem with the CopyObject operator where a copy to an existing
12226 named object did not always completely overwrite the existing object
12228 at name. Specifically, a buffer-to-buffer copy did not delete the
12232 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
12234 structs for consistency.
12236 Code and Data Size: Current and previous core subsystem library sizes are
12237 shown below. These are the code and data sizes for the acpica.lib
12239 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12240 any ACPI driver or OSPM code. The debug version of the code includes the
12241 debug output trace mechanism and has a much larger code and data size.
12243 that these values will vary depending on the efficiency of the compiler
12245 the compiler options used during generation.
12248 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
12249 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
12250 Current Release: (Same sizes)
12251 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
12252 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
12255 2) iASL Compiler/Disassembler:
12257 The compiler now emits a warning if an attempt is made to generate a 64-
12259 integer constant from within a 32-bit ACPI table (Revision < 2). The
12261 is truncated to 32 bits.
12263 Fixed a problem with large package objects: if the static length of the
12264 package is greater than 255, the "variable length package" opcode is
12265 emitted. Previously, this caused an error. This requires an update to the
12266 ACPI spec, since it currently (incorrectly) states that packages larger
12268 255 elements are not allowed.
12270 The disassembler now correctly handles variable length packages and
12272 larger than 255 elements.
12274 ----------------------------------------
12275 08 April 2005. Summary of changes for version 20050408:
12277 1) ACPI CA Core Subsystem:
12279 Fixed three cases in the interpreter where an "index" argument to an ASL
12280 function was still (internally) 32 bits instead of the required 64 bits.
12281 This was the Index argument to the Index, Mid, and Match operators.
12283 The "strupr" function is now permanently local (AcpiUtStrupr), since this
12285 not a POSIX-defined function and not present in most kernel-level C
12286 libraries. All references to the C library strupr function have been
12290 Completed the deployment of static functions/prototypes. All prototypes
12292 the static attribute have been moved from the headers to the owning C
12295 Implemented an extract option (-e) for the AcpiBin utility (AML binary
12296 utility). This option allows the utility to extract individual ACPI
12298 from the output of AcpiDmp. It provides the same functionality of the
12299 acpixtract.pl perl script without the worry of setting the correct perl
12300 options. AcpiBin runs on Windows and has not yet been generated/validated
12302 the Linux/Unix environment (but should be soon).
12304 Updated and fixed the table dump option for AcpiBin (-d). This option
12305 converts a single ACPI table to a hex/ascii file, similar to the output
12309 Code and Data Size: Current and previous core subsystem library sizes are
12310 shown below. These are the code and data sizes for the acpica.lib
12312 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12313 any ACPI driver or OSPM code. The debug version of the code includes the
12314 debug output trace mechanism and has a much larger code and data size.
12316 that these values will vary depending on the efficiency of the compiler
12318 the compiler options used during generation.
12321 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
12322 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
12324 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
12325 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
12328 2) iASL Compiler/Disassembler:
12330 Disassembler fix: Added a check to ensure that the table length found in
12332 ACPI table header within the input file is not longer than the actual
12334 file size. This indicates some kind of file or table corruption.
12336 ----------------------------------------
12337 29 March 2005. Summary of changes for version 20050329:
12339 1) ACPI CA Core Subsystem:
12341 An error is now generated if an attempt is made to create a Buffer Field
12343 length zero (A CreateField with a length operand of zero.)
12345 The interpreter now issues a warning whenever executable code at the
12347 level is detected during ACPI table load. This will give some idea of the
12348 prevalence of this type of code.
12350 Implemented support for references to named objects (other than control
12351 methods) within package objects.
12353 Enhanced package object output for the debug object. Package objects are
12355 completely dumped, showing all elements.
12357 Enhanced miscellaneous object output for the debug object. Any object can
12358 now be written to the debug object (for example, a device object can be
12359 written, and the type of the object will be displayed.)
12361 The "static" qualifier has been added to all local functions across both
12363 core subsystem and the iASL compiler.
12365 The number of "long" lines (> 80 chars) within the source has been
12366 significantly reduced, by about 1/3.
12368 Cleaned up all header files to ensure that all CA/iASL functions are
12369 prototyped (even static functions) and the formatting is consistent.
12371 Two new header files have been added, acopcode.h and acnames.h.
12373 Removed several obsolete functions that were no longer used.
12375 Code and Data Size: Current and previous core subsystem library sizes are
12376 shown below. These are the code and data sizes for the acpica.lib
12378 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12379 any ACPI driver or OSPM code. The debug version of the code includes the
12380 debug output trace mechanism and has a much larger code and data size.
12382 that these values will vary depending on the efficiency of the compiler
12384 the compiler options used during generation.
12387 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12388 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12390 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
12391 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
12395 2) iASL Compiler/Disassembler:
12397 Fixed a problem with the resource descriptor generation/support. For the
12398 ResourceSourceIndex and the ResourceSource fields, both must be present,
12400 both must be not present - can't have one without the other.
12402 The compiler now returns non-zero from the main procedure if any errors
12404 occurred during the compilation.
12407 ----------------------------------------
12408 09 March 2005. Summary of changes for version 20050309:
12410 1) ACPI CA Core Subsystem:
12412 The string-to-buffer implicit conversion code has been modified again
12414 a change to the ACPI specification. In order to match the behavior of
12416 other major ACPI implementation, the target buffer is no longer truncated
12418 the source string is smaller than an existing target buffer. This change
12419 requires an update to the ACPI spec, and should eliminate the recent
12420 AE_AML_BUFFER_LIMIT issues.
12422 The "implicit return" support was rewritten to a new algorithm that
12424 the general case. Rather than attempt to determine when a method is about
12426 exit, the result of every ASL operator is saved momentarily until the
12428 next ASL operator is executed. Therefore, no matter how the method exits,
12429 there will always be a saved implicit return value. This feature is only
12430 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
12432 AE_AML_NO_RETURN_VALUE errors when enabled.
12434 Implemented implicit conversion support for the predicate (operand) of
12436 If, Else, and While operators. String and Buffer arguments are
12438 converted to Integers.
12440 Changed the string-to-integer conversion behavior to match the new ACPI
12441 errata: "If no integer object exists, a new integer is created. The ASCII
12442 string is interpreted as a hexadecimal constant. Each string character is
12443 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
12444 with the first character as the most significant digit, and ending with
12446 first non-hexadecimal character or end-of-string." This means that the
12448 non-hex character terminates the conversion and this is the code that was
12451 Fixed a problem where the ObjectType operator would fail (fault) when
12453 on an Index of a Package which pointed to a null package element. The
12454 operator now properly returns zero (Uninitialized) in this case.
12456 Fixed a problem where the While operator used excessive memory by not
12457 properly popping the result stack during execution. There was no memory
12459 after execution, however. (Code provided by Valery Podrezov.)
12461 Fixed a problem where references to control methods within Package
12463 caused the method to be invoked, instead of producing a reference object
12464 pointing to the method.
12466 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
12468 improve performance and reduce code size. (Code provided by Alexey
12471 Code and Data Size: Current and previous core subsystem library sizes are
12472 shown below. These are the code and data sizes for the acpica.lib
12474 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12475 any ACPI driver or OSPM code. The debug version of the code includes the
12476 debug output trace mechanism and has a much larger code and data size.
12478 that these values will vary depending on the efficiency of the compiler
12480 the compiler options used during generation.
12483 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12484 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12486 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12487 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12490 2) iASL Compiler/Disassembler:
12492 Fixed a problem with the Return operator with no arguments. Since the AML
12493 grammar for the byte encoding requires an operand for the Return opcode,
12495 compiler now emits a Return(Zero) for this case. An ACPI specification
12496 update has been written for this case.
12498 For tables other than the DSDT, namepath optimization is automatically
12499 disabled. This is because SSDTs can be loaded anywhere in the namespace,
12501 compiler has no knowledge of where, and thus cannot optimize namepaths.
12503 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
12504 inadvertently omitted from the ACPI specification, and will require an
12505 update to the spec.
12507 The source file scan for ASCII characters is now optional (-a). This
12509 was made because some vendors place non-ascii characters within comments.
12510 However, the scan is simply a brute-force byte compare to ensure all
12511 characters in the file are in the range 0x00 to 0x7F.
12513 Fixed a problem with the CondRefOf operator where the compiler was
12514 inappropriately checking for the existence of the target. Since the point
12516 the operator is to check for the existence of the target at run-time, the
12517 compiler no longer checks for the target existence.
12519 Fixed a problem where errors generated from the internal AML interpreter
12520 during constant folding were not handled properly, causing a fault.
12522 Fixed a problem with overly aggressive range checking for the Stall
12523 operator. The valid range (max 255) is now only checked if the operand is
12525 type Integer. All other operand types cannot be statically checked.
12527 Fixed a problem where control method references within the RefOf,
12529 and ObjectType operators were not treated properly. They are now treated
12531 actual references, not method invocations.
12533 Fixed and enhanced the "list namespace" option (-ln). This option was
12535 a number of releases ago.
12537 Improved error handling for the Field, IndexField, and BankField
12539 The compiler now cleanly reports and recovers from errors in the field
12540 component (FieldUnit) list.
12542 Fixed a disassembler problem where the optional ResourceDescriptor fields
12543 TRS and TTP were not always handled correctly.
12545 Disassembler - Comments in output now use "//" instead of "/*"
12547 ----------------------------------------
12548 28 February 2005. Summary of changes for version 20050228:
12550 1) ACPI CA Core Subsystem:
12552 Fixed a problem where the result of an Index() operator (an object
12553 reference) must increment the reference count on the target object for
12555 life of the object reference.
12557 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
12558 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
12560 resource descriptors.
12562 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
12563 Space Descriptor" string, indicating interpreter support for the
12567 Implemented header support for the new ACPI 3.0 FADT flag bits.
12569 Implemented header support for the new ACPI 3.0 PCI Express bits for the
12571 status/enable registers.
12573 Updated header support for the MADT processor local Apic struct and MADT
12574 platform interrupt source struct for new ACPI 3.0 fields.
12576 Implemented header support for the SRAT and SLIT ACPI tables.
12578 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
12582 Code and Data Size: Current and previous core subsystem library sizes are
12583 shown below. These are the code and data sizes for the acpica.lib
12585 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12586 any ACPI driver or OSPM code. The debug version of the code includes the
12587 debug output trace mechanism and has a much larger code and data size.
12589 that these values will vary depending on the efficiency of the compiler
12591 the compiler options used during generation.
12594 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12595 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12597 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12598 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12601 2) iASL Compiler/Disassembler:
12603 Fixed a problem with the internal 64-bit String-to-integer conversion
12605 strings less than two characters long.
12607 Fixed a problem with constant folding where the result of the Index()
12608 operator can not be considered a constant. This means that Index() cannot
12610 a type3 opcode and this will require an update to the ACPI specification.
12612 Disassembler: Implemented support for the TTP, MTP, and TRS resource
12613 descriptor fields. These fields were inadvertently ignored and not output
12615 the disassembly of the resource descriptor.
12618 ----------------------------------------
12619 11 February 2005. Summary of changes for version 20050211:
12621 1) ACPI CA Core Subsystem:
12623 Implemented ACPI 3.0 support for implicit conversion within the Match()
12624 operator. MatchObjects can now be of type integer, buffer, or string
12626 of just type integer. Package elements are implicitly converted to the
12628 of the MatchObject. This change aligns the behavior of Match() with the
12629 behavior of the other logical operators (LLess(), etc.) It also requires
12631 errata change to the ACPI specification as this support was intended for
12632 ACPI 3.0, but was inadvertently omitted.
12634 Fixed a problem with the internal implicit "to buffer" conversion.
12636 that are converted to buffers will cause buffer truncation if the string
12638 smaller than the target buffer. Integers that are converted to buffers
12640 not cause buffer truncation, only zero extension (both as per the ACPI
12641 spec.) The problem was introduced when code was added to truncate the
12642 buffer, but this should not be performed in all cases, only the string
12645 Fixed a problem with the Buffer and Package operators where the
12647 would get confused if two such operators were used as operands to an ASL
12648 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
12649 stack was not being popped after the execution of these operators,
12651 in an AE_NO_RETURN_VALUE exception.
12653 Fixed a problem with constructs of the form Store(Index(...),...). The
12654 reference object returned from Index was inadvertently resolved to an
12656 value. This problem was introduced in version 20050114 when the behavior
12658 Store() was modified to restrict the object types that can be used as the
12659 source operand (to match the ACPI specification.)
12661 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
12663 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
12665 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
12667 Code and Data Size: Current and previous core subsystem library sizes are
12668 shown below. These are the code and data sizes for the acpica.lib
12670 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12671 any ACPI driver or OSPM code. The debug version of the code includes the
12672 debug output trace mechanism and has a much larger code and data size.
12674 that these values will vary depending on the efficiency of the compiler
12676 the compiler options used during generation.
12679 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12680 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12682 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12683 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12686 2) iASL Compiler/Disassembler:
12688 Fixed a code generation problem in the constant folding optimization code
12689 where incorrect code was generated if a constant was reduced to a buffer
12690 object (i.e., a reduced type 5 opcode.)
12692 Fixed a typechecking problem for the ToBuffer operator. Caused by an
12693 incorrect return type in the internal opcode information table.
12695 ----------------------------------------
12696 25 January 2005. Summary of changes for version 20050125:
12698 1) ACPI CA Core Subsystem:
12700 Fixed a recently introduced problem with the Global Lock where the
12701 underlying semaphore was not created. This problem was introduced in
12702 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
12703 Acquire() operation on _GL.
12705 The local object cache is now optional, and is disabled by default. Both
12706 AcpiExec and the iASL compiler enable the cache because they run in user
12707 mode and this enhances their performance. #define
12708 ACPI_ENABLE_OBJECT_CACHE
12709 to enable the local cache.
12711 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
12713 optional "implicit return" support where an error was returned if no
12715 object was expected, but one was implicitly returned. AE_OK is now
12717 in this case and the implicitly returned object is deleted.
12718 AcpiUtEvaluateObject is only occasionally used, and only to execute
12720 methods such as _STA and _INI where the return type is known up front.
12722 Fixed a few issues with the internal convert-to-integer code. It now
12724 an error if an attempt is made to convert a null string, a string of only
12725 blanks/tabs, or a zero-length buffer. This affects both implicit
12727 and explicit conversion via the ToInteger() operator.
12729 The internal debug code in AcpiUtAcquireMutex has been commented out. It
12731 not needed for normal operation and should increase the performance of
12733 entire subsystem. The code remains in case it is needed for debug
12737 The AcpiExec source and makefile are included in the Unix/Linux package
12741 Code and Data Size: Current and previous core subsystem library sizes are
12742 shown below. These are the code and data sizes for the acpica.lib
12744 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12745 any ACPI driver or OSPM code. The debug version of the code includes the
12746 debug output trace mechanism and has a much larger code and data size.
12748 that these values will vary depending on the efficiency of the compiler
12750 the compiler options used during generation.
12753 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12754 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12756 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12757 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12759 2) iASL Compiler/Disassembler:
12761 Switch/Case support: A warning is now issued if the type of the Switch
12763 cannot be determined at compile time. For example, Switch(Arg0) will
12764 generate the warning, and the type is assumed to be an integer. As per
12766 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
12770 Switch/Case support: Implemented support for buffer and string objects as
12771 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
12772 buffers and strings.
12774 Switch/Case support: The emitted code for the LEqual() comparisons now
12776 the switch value as the first operand, not the second. The case value is
12778 the second operand, and this allows the case value to be implicitly
12779 converted to the type of the switch value, not the other way around.
12781 Switch/Case support: Temporary variables are now emitted immediately
12783 the control method, not at the global level. This means that there are
12785 36 temps available per-method, not 36 temps per-module as was the case
12787 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
12789 ----------------------------------------
12790 14 January 2005. Summary of changes for version 20050114:
12792 Added 2005 copyright to all module headers. This affects every module in
12793 the core subsystem, iASL compiler, and the utilities.
12795 1) ACPI CA Core Subsystem:
12797 Fixed an issue with the String-to-Buffer conversion code where the string
12798 null terminator was not included in the buffer after conversion, but
12800 is existing ASL that assumes the string null terminator is included. This
12802 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12803 introduced in the previous version when the code was updated to correctly
12804 set the converted buffer size as per the ACPI specification. The ACPI
12806 is ambiguous and will be updated to specify that the null terminator must
12808 included in the converted buffer. This also affects the ToBuffer() ASL
12811 Fixed a problem with the Mid() ASL/AML operator where it did not work
12812 correctly on Buffer objects. Newly created sub-buffers were not being
12817 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12818 performed on the OemId and OemTableId table header fields. These fields
12820 not null terminated, so strncmp is now used instead of strcmp.
12822 Implemented a restriction on the Store() ASL/AML operator to align the
12823 behavior with the ACPI specification. Previously, any object could be
12825 as the source operand. Now, the only objects that may be used are
12827 Buffers, Strings, Packages, Object References, and DDB Handles. If
12828 necessary, the original behavior can be restored by enabling the
12829 EnableInterpreterSlack flag.
12831 Enhanced the optional "implicit return" support to allow an implicit
12833 value from methods that are invoked externally via the AcpiEvaluateObject
12834 interface. This enables implicit returns from the _STA and _INI methods,
12837 Changed the Revision() ASL/AML operator to return the current version of
12839 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12841 the supported ACPI version (This is the function of the _REV method).
12843 Updated the _REV predefined method to return the currently supported
12847 Implemented batch mode option for the AcpiExec utility (-b).
12849 Code and Data Size: Current and previous core subsystem library sizes are
12850 shown below. These are the code and data sizes for the acpica.lib
12852 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12853 any ACPI driver or OSPM code. The debug version of the code includes the
12854 debug output trace mechanism and has a much larger code and data size.
12856 that these values will vary depending on the efficiency of the compiler
12858 the compiler options used during generation.
12861 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12862 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12864 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12865 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12867 ----------------------------------------
12868 10 December 2004. Summary of changes for version 20041210:
12870 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12871 ACPI CA core subsystem.
12873 1) ACPI CA Core Subsystem:
12875 Fixed a problem in the ToDecimalString operator where the resulting
12877 length was incorrectly calculated. The length is now calculated exactly,
12878 eliminating incorrect AE_STRING_LIMIT exceptions.
12880 Fixed a problem in the ToHexString operator to allow a maximum 200
12882 string to be produced.
12884 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12886 routine where the length of the resulting buffer was not truncated to the
12887 new size (if the target buffer already existed).
12889 Code and Data Size: Current and previous core subsystem library sizes are
12890 shown below. These are the code and data sizes for the acpica.lib
12892 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12893 any ACPI driver or OSPM code. The debug version of the code includes the
12894 debug output trace mechanism and has a much larger code and data size.
12896 that these values will vary depending on the efficiency of the compiler
12898 the compiler options used during generation.
12901 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12902 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12904 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12905 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12908 2) iASL Compiler/Disassembler:
12910 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12911 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12912 Includes support in the disassembler.
12914 Implemented support for the new (ACPI 3.0) parameter to the Register
12918 Fixed a problem where the _HE resource name for the Interrupt macro was
12919 referencing bit 0 instead of bit 1.
12921 Implemented check for maximum 255 interrupts in the Interrupt macro.
12923 Fixed a problem with the predefined resource descriptor names where
12924 incorrect AML code was generated if the offset within the resource buffer
12925 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12926 but did not update the surrounding package lengths.
12928 Changes to the Dma macro: All channels within the channel list must be
12930 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12931 optional (default is BusMaster).
12933 Implemented check for maximum 7 data bytes for the VendorShort macro.
12935 The ReadWrite parameter is now optional for the Memory32 and similar
12938 ----------------------------------------
12939 03 December 2004. Summary of changes for version 20041203:
12941 1) ACPI CA Core Subsystem:
12943 The low-level field insertion/extraction code (exfldio) has been
12945 rewritten to eliminate unnecessary complexity, bugs, and boundary
12948 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12950 operators where the input operand could be inadvertently deleted if no
12951 conversion was necessary (e.g., if the input to ToInteger was an Integer
12954 Fixed a problem with the ToDecimalString and ToHexString where an
12956 exception code was returned if the resulting string would be > 200 chars.
12957 AE_STRING_LIMIT is now returned.
12959 Fixed a problem with the Concatenate operator where AE_OK was always
12960 returned, even if the operation failed.
12962 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12963 semaphores to be allocated.
12965 Code and Data Size: Current and previous core subsystem library sizes are
12966 shown below. These are the code and data sizes for the acpica.lib
12968 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12969 any ACPI driver or OSPM code. The debug version of the code includes the
12970 debug output trace mechanism and has a much larger code and data size.
12972 that these values will vary depending on the efficiency of the compiler
12974 the compiler options used during generation.
12977 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12978 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12980 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12981 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12984 2) iASL Compiler/Disassembler:
12986 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12987 recently introduced in 20041119.
12989 Fixed a problem with the ToUUID macro where the upper nybble of each
12991 byte was inadvertently set to zero.
12993 ----------------------------------------
12994 19 November 2004. Summary of changes for version 20041119:
12996 1) ACPI CA Core Subsystem:
12998 Fixed a problem in the internal ConvertToInteger routine where new
13000 were not truncated to 32 bits for 32-bit ACPI tables. This routine
13002 buffers and strings to integers.
13004 Implemented support to store a value to an Index() on a String object.
13006 is an ACPI 2.0 feature that had not yet been implemented.
13008 Implemented new behavior for storing objects to individual package
13010 (via the Index() operator). The previous behavior was to invoke the
13012 conversion rules if an object was already present at the index. The new
13013 behavior is to simply delete any existing object and directly store the
13015 object. Although the ACPI specification seems unclear on this subject,
13017 ACPI implementations behave in this manner. (This is the root of the
13018 AE_BAD_HEX_CONSTANT issue.)
13020 Modified the RSDP memory scan mechanism to support the extended checksum
13022 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
13023 RSDP signature is found with a valid checksum.
13025 Code and Data Size: Current and previous core subsystem library sizes are
13026 shown below. These are the code and data sizes for the acpica.lib
13028 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13029 any ACPI driver or OSPM code. The debug version of the code includes the
13030 debug output trace mechanism and has a much larger code and data size.
13032 that these values will vary depending on the efficiency of the compiler
13034 the compiler options used during generation.
13037 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
13038 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
13040 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
13041 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
13044 2) iASL Compiler/Disassembler:
13046 Fixed a missing semicolon in the aslcompiler.y file.
13048 ----------------------------------------
13049 05 November 2004. Summary of changes for version 20041105:
13051 1) ACPI CA Core Subsystem:
13053 Implemented support for FADT revision 2. This was an interim table
13055 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
13057 Implemented optional support to allow uninitialized LocalX and ArgX
13058 variables in a control method. The variables are initialized to an
13060 object with a value of zero. This support is enabled by setting the
13061 AcpiGbl_EnableInterpreterSlack flag to TRUE.
13063 Implemented support for Integer objects for the SizeOf operator. Either
13065 or 8 is returned, depending on the current integer size (32-bit or 64-
13067 depending on the parent table revision).
13069 Fixed a problem in the implementation of the SizeOf and ObjectType
13071 where the operand was resolved to a value too early, causing incorrect
13072 return values for some objects.
13074 Fixed some possible memory leaks during exceptional conditions.
13076 Code and Data Size: Current and previous core subsystem library sizes are
13077 shown below. These are the code and data sizes for the acpica.lib
13079 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13080 any ACPI driver or OSPM code. The debug version of the code includes the
13081 debug output trace mechanism and has a much larger code and data size.
13083 that these values will vary depending on the efficiency of the compiler
13085 the compiler options used during generation.
13088 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13089 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
13091 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
13092 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
13095 2) iASL Compiler/Disassembler:
13097 Implemented support for all ACPI 3.0 reserved names and methods.
13099 Implemented all ACPI 3.0 grammar elements in the front-end, including
13100 support for semicolons.
13102 Implemented the ACPI 3.0 Function() and ToUUID() macros
13104 Fixed a problem in the disassembler where a Scope() operator would not be
13105 emitted properly if the target of the scope was in another table.
13107 ----------------------------------------
13108 15 October 2004. Summary of changes for version 20041015:
13110 Note: ACPI CA is currently undergoing an in-depth and complete formal
13111 evaluation to test/verify the following areas. Other suggestions are
13112 welcome. This will result in an increase in the frequency of releases and
13113 the number of bug fixes in the next few months.
13114 - Functional tests for all ASL/AML operators
13115 - All implicit/explicit type conversions
13116 - Bit fields and operation regions
13117 - 64-bit math support and 32-bit-only "truncated" math support
13118 - Exceptional conditions, both compiler and interpreter
13119 - Dynamic object deletion and memory leaks
13120 - ACPI 3.0 support when implemented
13121 - External interfaces to the ACPI subsystem
13124 1) ACPI CA Core Subsystem:
13126 Fixed two alignment issues on 64-bit platforms - within debug statements
13128 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
13130 field within the non-aligned ACPI generic address structure.
13132 Fixed a problem in the Increment and Decrement operators where incorrect
13133 operand resolution could result in the inadvertent modification of the
13134 original integer when the integer is passed into another method as an
13135 argument and the arg is then incremented/decremented.
13137 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
13139 BCD number were truncated during conversion.
13141 Fixed a problem in the ToDecimal operator where the length of the
13143 string could be set incorrectly too long if the input operand was a
13147 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
13149 within a buffer would prematurely terminate a compare between buffer
13152 Added a check for string overflow (>200 characters as per the ACPI
13153 specification) during the Concatenate operator with two string operands.
13155 Code and Data Size: Current and previous core subsystem library sizes are
13156 shown below. These are the code and data sizes for the acpica.lib
13158 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13159 any ACPI driver or OSPM code. The debug version of the code includes the
13160 debug output trace mechanism and has a much larger code and data size.
13162 that these values will vary depending on the efficiency of the compiler
13164 the compiler options used during generation.
13167 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13168 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
13170 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13171 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
13175 2) iASL Compiler/Disassembler:
13177 Allow the use of the ObjectType operator on uninitialized Locals and Args
13178 (returns 0 as per the ACPI specification).
13180 Fixed a problem where the compiler would fault if there was a syntax
13182 in the FieldName of all of the various CreateXXXField operators.
13184 Disallow the use of lower case letters within the EISAID macro, as per
13186 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
13188 U is an uppercase letter and N is a hex digit.
13191 ----------------------------------------
13192 06 October 2004. Summary of changes for version 20041006:
13194 1) ACPI CA Core Subsystem:
13196 Implemented support for the ACPI 3.0 Timer operator. This ASL function
13197 implements a 64-bit timer with 100 nanosecond granularity.
13199 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
13200 implement the ACPI 3.0 Timer operator. This allows the host OS to
13202 the timer with the best clock available. Also, it keeps the core
13204 out of the clock handling business, since the host OS (usually) performs
13207 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
13208 functions use a 64-bit address which is part of the packed ACPI Generic
13209 Address Structure. Since the structure is non-aligned, the alignment
13211 are now used to extract the address to a local variable before use.
13213 Fixed a problem where the ToInteger operator assumed all input strings
13215 hexadecimal. The operator now handles both decimal strings and hex
13217 (prefixed with "0x").
13219 Fixed a problem where the string length in the string object created as a
13220 result of the internal ConvertToString procedure could be incorrect. This
13221 potentially affected all implicit conversions and also the
13223 and ToHexString operators.
13225 Fixed two problems in the ToString operator. If the length parameter was
13226 zero, an incorrect string object was created and the value of the input
13227 length parameter was inadvertently changed from zero to Ones.
13229 Fixed a problem where the optional ResourceSource string in the
13231 resource macro was ignored.
13233 Simplified the interfaces to the internal division functions, reducing
13235 size and complexity.
13237 Code and Data Size: Current and previous core subsystem library sizes are
13238 shown below. These are the code and data sizes for the acpica.lib
13240 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13241 any ACPI driver or OSPM code. The debug version of the code includes the
13242 debug output trace mechanism and has a much larger code and data size.
13244 that these values will vary depending on the efficiency of the compiler
13246 the compiler options used during generation.
13249 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
13250 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
13252 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13253 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
13256 2) iASL Compiler/Disassembler:
13258 Implemented support for the ACPI 3.0 Timer operator.
13260 Fixed a problem where the Default() operator was inadvertently ignored in
13262 Switch/Case block. This was a problem in the translation of the Switch
13263 statement to If...Else pairs.
13265 Added support to allow a standalone Return operator, with no parentheses
13269 Fixed a problem with code generation for the ElseIf operator where the
13270 translated Else...If parse tree was improperly constructed leading to the
13273 ----------------------------------------
13274 22 September 2004. Summary of changes for version 20040922:
13276 1) ACPI CA Core Subsystem:
13278 Fixed a problem with the implementation of the LNot() operator where
13280 was not returned for the TRUE case. Changed the code to return Ones
13282 of (!Arg) which was usually 1. This change affects iASL constant folding
13284 this operator also.
13286 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
13288 initialized properly -- Now zero the entire buffer in this case where the
13289 buffer already exists.
13291 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
13292 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
13293 related code considerably. This will require changes/updates to all OS
13294 interface layers (OSLs.)
13296 Implemented a new external interface, AcpiInstallExceptionHandler, to
13298 a system exception handler to be installed. This handler is invoked upon
13300 run-time exception that occurs during control method execution.
13302 Added support for the DSDT in AcpiTbFindTable. This allows the
13303 DataTableRegion() operator to access the local copy of the DSDT.
13305 Code and Data Size: Current and previous core subsystem library sizes are
13306 shown below. These are the code and data sizes for the acpica.lib
13308 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13309 any ACPI driver or OSPM code. The debug version of the code includes the
13310 debug output trace mechanism and has a much larger code and data size.
13312 that these values will vary depending on the efficiency of the compiler
13314 the compiler options used during generation.
13317 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
13318 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
13320 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
13321 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
13324 2) iASL Compiler/Disassembler:
13326 Fixed a problem with constant folding and the LNot operator. LNot was
13327 returning 1 in the TRUE case, not Ones as per the ACPI specification.
13329 could result in the generation of an incorrect folded/reduced constant.
13331 End-Of-File is now allowed within a "//"-style comment. A parse error no
13332 longer occurs if such a comment is at the very end of the input ASL
13336 Implemented the "-r" option to override the Revision in the table header.
13337 The initial use of this option will be to simplify the evaluation of the
13339 interpreter by allowing a single ASL source module to be compiled for
13341 32-bit or 64-bit integers.
13344 ----------------------------------------
13345 27 August 2004. Summary of changes for version 20040827:
13347 1) ACPI CA Core Subsystem:
13349 - Implemented support for implicit object conversion in the non-numeric
13350 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
13352 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
13353 the second operand is implicitly converted on the fly to match the type
13355 the first operand. For example:
13357 LEqual (Source1, Source2)
13359 Source1 and Source2 must each evaluate to an integer, a string, or a
13361 The data type of Source1 dictates the required type of Source2. Source2
13363 implicitly converted if necessary to match the type of Source1.
13365 - Updated and corrected the behavior of the string conversion support.
13367 rules concerning conversion of buffers to strings (according to the ACPI
13368 specification) are as follows:
13370 ToDecimalString - explicit byte-wise conversion of buffer to string of
13371 decimal values (0-255) separated by commas. ToHexString - explicit byte-
13373 conversion of buffer to string of hex values (0-FF) separated by commas.
13374 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
13376 copy with no transform except NULL terminated. Any other implicit buffer-
13378 string conversion - byte-wise conversion of buffer to string of hex
13380 (0-FF) separated by spaces.
13382 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
13384 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
13386 one byte too short in the case of a node in the root scope. This could
13387 cause a fault during debug output.
13389 - Code and Data Size: Current and previous core subsystem library sizes
13391 shown below. These are the code and data sizes for the acpica.lib
13393 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13394 any ACPI driver or OSPM code. The debug version of the code includes the
13395 debug output trace mechanism and has a much larger code and data size.
13397 that these values will vary depending on the efficiency of the compiler
13399 the compiler options used during generation.
13402 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
13403 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13405 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
13406 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
13409 2) iASL Compiler/Disassembler:
13411 - Fixed a Linux generation error.
13414 ----------------------------------------
13415 16 August 2004. Summary of changes for version 20040816:
13417 1) ACPI CA Core Subsystem:
13419 Designed and implemented support within the AML interpreter for the so-
13420 called "implicit return". This support returns the result of the last
13422 operation within a control method, in the absence of an explicit Return()
13423 operator. A few machines depend on this behavior, even though it is not
13424 explicitly supported by the ASL language. It is optional support that
13426 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
13428 Removed support for the PCI_Config address space from the internal low
13430 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
13431 support was not used internally, and would not work correctly anyway
13433 the PCI bus number and segment number were not supported. There are
13434 separate interfaces for PCI configuration space access because of the
13438 Code and Data Size: Current and previous core subsystem library sizes are
13439 shown below. These are the code and data sizes for the acpica.lib
13441 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13442 any ACPI driver or OSPM code. The debug version of the code includes the
13443 debug output trace mechanism and has a much larger code and data size.
13445 that these values will vary depending on the efficiency of the compiler
13447 the compiler options used during generation.
13450 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13451 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13453 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
13454 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13457 2) iASL Compiler/Disassembler:
13459 Fixed a problem where constants in ASL expressions at the root level (not
13460 within a control method) could be inadvertently truncated during code
13461 generation. This problem was introduced in the 20040715 release.
13464 ----------------------------------------
13465 15 July 2004. Summary of changes for version 20040715:
13467 1) ACPI CA Core Subsystem:
13469 Restructured the internal HW GPE interfaces to pass/track the current
13471 of interrupts (enabled/disabled) in order to avoid possible deadlock and
13472 increase flexibility of the interfaces.
13474 Implemented a "lexicographical compare" for String and Buffer objects
13476 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
13478 as per further clarification to the ACPI specification. Behavior is
13480 to C library "strcmp".
13482 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
13483 external function. In the 32-bit non-debug case, the stack use has been
13484 reduced from 168 bytes to 32 bytes.
13486 Deployed a new run-time configuration flag,
13487 AcpiGbl_EnableInterpreterSlack,
13488 whose purpose is to allow the AML interpreter to forgive certain bad AML
13489 constructs. Default setting is FALSE.
13491 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
13493 support code. If enabled, it allows field access to go beyond the end of
13495 region definition if the field is within the region length rounded up to
13497 next access width boundary (a common coding error.)
13499 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
13500 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
13502 symbols are lowercased by the latest version of the AcpiSrc tool.
13504 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
13505 rename "Register" to simply "Reg" to prevent certain compilers from
13508 Code and Data Size: Current and previous core subsystem library sizes are
13509 shown below. These are the code and data sizes for the acpica.lib
13511 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13512 any ACPI driver or OSPM code. The debug version of the code includes the
13513 debug output trace mechanism and has a much larger code and data size.
13515 that these values will vary depending on the efficiency of the compiler
13517 the compiler options used during generation.
13520 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13521 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13523 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13524 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13527 2) iASL Compiler/Disassembler:
13529 Implemented full support for Package objects within the Case() operator.
13530 Note: The Break() operator is currently not supported within Case blocks
13531 (TermLists) as there is some question about backward compatibility with
13536 Fixed a problem where complex terms were not supported properly within
13540 Eliminated extraneous warning for compiler-emitted reserved names of the
13541 form "_T_x". (Used in Switch/Case operators.)
13543 Eliminated optimization messages for "_T_x" objects and small constants
13544 within the DefinitionBlock operator.
13547 ----------------------------------------
13548 15 June 2004. Summary of changes for version 20040615:
13550 1) ACPI CA Core Subsystem:
13552 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13554 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13557 All directory names in the entire source package are lower case, as they
13558 were in earlier releases.
13560 Implemented "Disassemble" command in the AML debugger that will
13562 a single control method.
13564 Code and Data Size: Current and previous core subsystem library sizes are
13565 shown below. These are the code and data sizes for the acpica.lib
13567 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13568 any ACPI driver or OSPM code. The debug version of the code includes the
13569 debug output trace mechanism and has a much larger code and data size.
13571 that these values will vary depending on the efficiency of the compiler
13573 the compiler options used during generation.
13576 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13577 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13580 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13581 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13584 2) iASL Compiler/Disassembler:
13586 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13588 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13591 All directory names in the entire source package are lower case, as they
13592 were in earlier releases.
13594 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
13597 Fixed an issue with the Windows version of the compiler where later
13599 of Windows place the FADT in the registry under the name "FADT" and not
13600 "FACP" as earlier versions did. This applies when using the -g or -
13601 d<nofilename> options. The compiler now looks for both strings as
13604 Fixed a problem with compiler namepath optimization where a namepath
13606 the Scope() operator could not be optimized if the namepath was a subpath
13608 the current scope path.
13610 ----------------------------------------
13611 27 May 2004. Summary of changes for version 20040527:
13613 1) ACPI CA Core Subsystem:
13615 Completed a new design and implementation for EBDA (Extended BIOS Data
13617 support in the RSDP scan code. The original code improperly scanned for
13619 EBDA by simply scanning from memory location 0 to 0x400. The correct
13621 is to first obtain the EBDA pointer from within the BIOS data area, then
13622 scan 1K of memory starting at the EBDA pointer. There appear to be few
13624 any machines that place the RSDP in the EBDA, however.
13626 Integrated a fix for a possible fault during evaluation of BufferField
13627 arguments. Obsolete code that was causing the problem was removed.
13629 Found and fixed a problem in the Field Support Code where data could be
13630 corrupted on a bit field read that starts on an aligned boundary but does
13631 not end on an aligned boundary. Merged the read/write "datum length"
13632 calculation code into a common procedure.
13634 Rolled in a couple of changes to the FreeBSD-specific header.
13637 Code and Data Size: Current and previous core subsystem library sizes are
13638 shown below. These are the code and data sizes for the acpica.lib
13640 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13641 any ACPI driver or OSPM code. The debug version of the code includes the
13642 debug output trace mechanism and has a much larger code and data size.
13644 that these values will vary depending on the efficiency of the compiler
13646 the compiler options used during generation.
13649 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13650 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13652 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13653 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13656 2) iASL Compiler/Disassembler:
13658 Fixed a generation warning produced by some overly-verbose compilers for
13662 ----------------------------------------
13663 14 May 2004. Summary of changes for version 20040514:
13665 1) ACPI CA Core Subsystem:
13667 Fixed a problem where hardware GPE enable bits sometimes not set properly
13668 during and after GPE method execution. Result of 04/27 changes.
13670 Removed extra "clear all GPEs" when sleeping/waking.
13672 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
13673 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
13675 the new AcpiEv* calls as appropriate.
13677 ACPI_OS_NAME was removed from the OS-specific headers. The default name
13679 now "Microsoft Windows NT" for maximum compatibility. However this can
13681 changed by modifying the acconfig.h file.
13683 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
13684 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
13686 Run _INI methods on ThermalZone objects. This is against the ACPI
13687 specification, but there is apparently ASL code in the field that has
13689 _INI methods, and apparently "other" AML interpreters execute them.
13691 Performed a full 16/32/64 bit lint that resulted in some small changes.
13693 Added a sleep simulation command to the AML debugger to test sleep code.
13695 Code and Data Size: Current and previous core subsystem library sizes are
13696 shown below. These are the code and data sizes for the acpica.lib
13698 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13699 any ACPI driver or OSPM code. The debug version of the code includes the
13700 debug output trace mechanism and has a much larger code and data size.
13702 that these values will vary depending on the efficiency of the compiler
13704 the compiler options used during generation.
13707 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13708 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13710 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13711 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13713 ----------------------------------------
13714 27 April 2004. Summary of changes for version 20040427:
13716 1) ACPI CA Core Subsystem:
13718 Completed a major overhaul of the GPE handling within ACPI CA. There are
13719 now three types of GPEs: wake-only, runtime-only, and combination
13721 The only GPEs allowed to be combination wake/run are for button-style
13722 devices such as a control-method power button, control-method sleep
13724 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
13726 referenced by any _PRW methods are marked for "runtime" and hardware
13727 enabled. Any GPE that is referenced by a _PRW method is marked for
13729 (and disabled at runtime). However, at sleep time, only those GPEs that
13730 have been specifically enabled for wake via the AcpiEnableGpe interface
13732 actually be hardware enabled.
13734 A new external interface has been added, AcpiSetGpeType(), that is meant
13736 be used by device drivers to force a GPE to a particular type. It will
13738 especially useful for the drivers for the button devices mentioned above.
13740 Completed restructuring of the ACPI CA initialization sequence so that
13741 default operation region handlers are installed before GPEs are
13743 and the _PRW methods are executed. This will prevent errors when the
13745 methods attempt to access system memory or I/O space.
13747 GPE enable/disable no longer reads the GPE enable register. We now keep
13749 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
13750 thus no longer depend on the hardware to maintain these bits.
13752 Always clear the wake status and fixed/GPE status bits before sleep, even
13755 Improved the AML debugger output for displaying the GPE blocks and their
13758 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
13762 Fixed a problem where the physical address was incorrectly calculated
13764 the Load() operator was used to directly load from an Operation Region
13766 loading from a Field object.) Also added check for minimum table length
13770 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
13773 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
13774 consistency with the other fields returned.
13776 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
13777 structure for each GPE in the system, so the size of this structure is
13780 CPU stack requirement reduction: Cleaned up the method execution and
13782 evaluation paths so that now a parameter structure is passed, instead of
13783 copying the various method parameters over and over again.
13785 In evregion.c: Correctly exit and reenter the interpreter region if and
13786 only if dispatching an operation region request to a user-installed
13788 Do not exit/reenter when dispatching to a default handler (e.g., default
13789 system memory or I/O handlers)
13792 Notes for updating drivers for the new GPE support. The following
13794 must be made to ACPI-related device drivers that are attached to one or
13796 GPEs: (This information will be added to the ACPI CA Programmer
13799 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13801 explicitly call AcpiEnableGpe.
13802 2) There is a new interface called AcpiSetGpeType. This should be called
13803 before enabling the GPE. Also, this interface will automatically disable
13804 the GPE if it is currently enabled.
13805 3) AcpiEnableGpe no longer supports a GPE type flag.
13807 Specific drivers that must be changed:
13809 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13810 AeGpeHandler, NULL);
13811 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13812 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13814 2) Button Drivers (Power, Lid, Sleep):
13815 Run _PRW method under parent device
13816 If _PRW exists: /* This is a control-method button */
13817 Extract GPE number and possibly GpeDevice
13818 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13819 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13821 For all other devices that have _PRWs, we automatically set the GPE type
13823 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13825 must be done on a selective basis, usually requiring some kind of user
13827 to allow the user to pick the wake devices.
13830 Code and Data Size: Current and previous core subsystem library sizes are
13831 shown below. These are the code and data sizes for the acpica.lib
13833 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13834 any ACPI driver or OSPM code. The debug version of the code includes the
13835 debug output trace mechanism and has a much larger code and data size.
13837 that these values will vary depending on the efficiency of the compiler
13839 the compiler options used during generation.
13842 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13843 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13846 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13847 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13851 ----------------------------------------
13852 02 April 2004. Summary of changes for version 20040402:
13854 1) ACPI CA Core Subsystem:
13856 Fixed an interpreter problem where an indirect store through an ArgX
13857 parameter was incorrectly applying the "implicit conversion rules" during
13858 the store. From the ACPI specification: "If the target is a method local
13860 argument (LocalX or ArgX), no conversion is performed and the result is
13861 stored directly to the target". The new behavior is to disable implicit
13862 conversion during ALL stores to an ArgX.
13864 Changed the behavior of the _PRW method scan to ignore any and all errors
13865 returned by a given _PRW. This prevents the scan from aborting from the
13866 failure of any single _PRW.
13868 Moved the runtime configuration parameters from the global init procedure
13870 static variables in acglobal.h. This will allow the host to override the
13871 default values easily.
13873 Code and Data Size: Current and previous core subsystem library sizes are
13874 shown below. These are the code and data sizes for the acpica.lib
13876 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13877 any ACPI driver or OSPM code. The debug version of the code includes the
13878 debug output trace mechanism and has a much larger code and data size.
13880 that these values will vary depending on the efficiency of the compiler
13882 the compiler options used during generation.
13885 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13886 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13888 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13889 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13892 2) iASL Compiler/Disassembler:
13894 iASL now fully disassembles SSDTs. However, External() statements are
13896 generated automatically for unresolved symbols at this time. This is a
13897 planned feature for future implementation.
13899 Fixed a scoping problem in the disassembler that occurs when the type of
13901 target of a Scope() operator is overridden. This problem caused an
13902 incorrectly nested internal namespace to be constructed.
13904 Any warnings or errors that are emitted during disassembly are now
13906 out automatically so that the resulting file can be recompiled without
13910 ----------------------------------------
13911 26 March 2004. Summary of changes for version 20040326:
13913 1) ACPI CA Core Subsystem:
13915 Implemented support for "wake" GPEs via interaction between GPEs and the
13916 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13917 identified as a WAKE GPE and by default will no longer be enabled at
13918 runtime. Previously, we were blindly enabling all GPEs with a
13920 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13922 believe this has been the cause of thousands of "spurious" GPEs on some
13925 This new GPE behavior is can be reverted to the original behavior (enable
13926 ALL GPEs at runtime) via a runtime flag.
13928 Fixed a problem where aliased control methods could not access objects
13929 properly. The proper scope within the namespace was not initialized
13930 (transferred to the target of the aliased method) before executing the
13933 Fixed a potential race condition on internal object deletion on the
13935 object in AcpiEvaluateObject.
13937 Integrated a fix for resource descriptors where both _MEM and _MTP were
13938 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13939 wide, 0x0F instead of 0x03.)
13941 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13944 fault in some cases.
13946 Updated Notify() values for debug statements in evmisc.c
13948 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13950 Code and Data Size: Current and previous core subsystem library sizes are
13951 shown below. These are the code and data sizes for the acpica.lib
13953 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13954 any ACPI driver or OSPM code. The debug version of the code includes the
13955 debug output trace mechanism and has a much larger code and data size.
13957 that these values will vary depending on the efficiency of the compiler
13959 the compiler options used during generation.
13963 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13964 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13966 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13967 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13969 ----------------------------------------
13970 11 March 2004. Summary of changes for version 20040311:
13972 1) ACPI CA Core Subsystem:
13974 Fixed a problem where errors occurring during the parse phase of control
13975 method execution did not abort cleanly. For example, objects created and
13976 installed in the namespace were not deleted. This caused all subsequent
13977 invocations of the method to return the AE_ALREADY_EXISTS exception.
13979 Implemented a mechanism to force a control method to "Serialized"
13981 if the method attempts to create namespace objects. (The root of the
13982 AE_ALREADY_EXISTS problem.)
13984 Implemented support for the predefined _OSI "internal" control method.
13985 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13987 "Windows 2001.1", and can be easily upgraded for new strings as
13989 This feature will allow "other" operating systems to execute the fully
13990 tested, "Windows" code path through the ASL code
13992 Global Lock Support: Now allows multiple acquires and releases with any
13993 internal thread. Removed concept of "owning thread" for this special
13996 Fixed two functions that were inappropriately declaring large objects on
13998 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
14000 method execution considerably.
14002 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
14003 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
14005 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
14006 defined on the machine.
14008 Implemented two runtime options: One to force all control method
14010 to "Serialized" to mimic Windows behavior, another to disable _OSI
14012 if it causes problems on a given machine.
14014 Code and Data Size: Current and previous core subsystem library sizes are
14015 shown below. These are the code and data sizes for the acpica.lib
14017 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
14018 any ACPI driver or OSPM code. The debug version of the code includes the
14019 debug output trace mechanism and has a much larger code and data size.
14021 that these values will vary depending on the efficiency of the compiler
14023 the compiler options used during generation.
14026 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
14027 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
14029 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
14030 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
14032 2) iASL Compiler/Disassembler:
14034 Fixed an array size problem for FreeBSD that would cause the compiler to
14037 ----------------------------------------
14038 20 February 2004. Summary of changes for version 20040220:
14041 1) ACPI CA Core Subsystem:
14043 Implemented execution of _SxD methods for Device objects in the
14044 GetObjectInfo interface.
14046 Fixed calls to _SST method to pass the correct arguments.
14048 Added a call to _SST on wake to restore to "working" state.
14050 Check for End-Of-Buffer failure case in the WalkResources interface.
14052 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
14053 structures to the beginning of the file.
14055 After wake, clear GPE status register(s) before enabling GPEs.
14057 After wake, clear/enable power button. (Perhaps we should clear/enable
14059 fixed events upon wake.)
14061 Fixed a couple of possible memory leaks in the Namespace manager.
14063 Integrated latest acnetbsd.h file.
14065 ----------------------------------------
14066 11 February 2004. Summary of changes for version 20040211:
14069 1) ACPI CA Core Subsystem:
14071 Completed investigation and implementation of the call-by-reference
14072 mechanism for control method arguments.
14074 Fixed a problem where a store of an object into an indexed package could
14075 fail if the store occurs within a different method than the method that
14076 created the package.
14078 Fixed a problem where the ToDecimal operator could return incorrect
14081 Fixed a problem where the CopyObject operator could fail on some of the
14083 obscure objects (e.g., Reference objects.)
14085 Improved the output of the Debug object to display buffer, package, and
14088 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
14090 the expected result.
14092 Added permanent ACPI_REPORT_ERROR macros for all instances of the
14093 ACPI_AML_INTERNAL exception.
14095 Integrated latest version of acfreebsd.h
14097 ----------------------------------------
14098 16 January 2004. Summary of changes for version 20040116:
14100 The purpose of this release is primarily to update the copyright years in
14101 each module, thus causing a huge number of diffs. There are a few small
14102 functional changes, however.
14104 1) ACPI CA Core Subsystem:
14106 Improved error messages when there is a problem finding one or more of
14108 required base ACPI tables
14110 Reintroduced the definition of APIC_HEADER in actbl.h
14112 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
14114 Removed extraneous reference to NewObj in dsmthdat.c
14118 Fixed a problem introduced in December that disabled the correct
14120 of Resource Templates
14123 ----------------------------------------
14124 03 December 2003. Summary of changes for version 20031203:
14126 1) ACPI CA Core Subsystem:
14128 Changed the initialization of Operation Regions during subsystem
14129 init to perform two entire walks of the ACPI namespace; The first
14130 to initialize the regions themselves, the second to execute the
14131 _REG methods. This fixed some interdependencies across _REG
14132 methods found on some machines.
14134 Fixed a problem where a Store(Local0, Local1) could simply update
14135 the object reference count, and not create a new copy of the
14136 object if the Local1 is uninitialized.
14138 Implemented support for the _SST reserved method during sleep
14141 Implemented support to clear the SLP_TYP and SLP_EN bits when
14142 waking up, this is apparently required by some machines.
14144 When sleeping, clear the wake status only if SleepState is not S5.
14146 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
14147 pointer arithmetic advanced a string pointer too far.
14149 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
14150 could be returned if the requested table has not been loaded.
14152 Within the support for IRQ resources, restructured the handling of
14153 the active and edge/level bits.
14155 Fixed a few problems in AcpiPsxExecute() where memory could be
14156 leaked under certain error conditions.
14158 Improved error messages for the cases where the ACPI mode could
14161 Code and Data Size: Current and previous core subsystem library
14162 sizes are shown below. These are the code and data sizes for the
14163 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14164 these values do not include any ACPI driver or OSPM code. The
14165 debug version of the code includes the debug output trace
14166 mechanism and has a much larger code and data size. Note that
14167 these values will vary depending on the efficiency of the compiler
14168 and the compiler options used during generation.
14170 Previous Release (20031029):
14171 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
14172 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
14174 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
14175 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
14177 2) iASL Compiler/Disassembler:
14179 Implemented a fix for the iASL disassembler where a bad index was
14180 generated. This was most noticeable on 64-bit platforms
14183 ----------------------------------------
14184 29 October 2003. Summary of changes for version 20031029:
14186 1) ACPI CA Core Subsystem:
14189 Fixed a problem where a level-triggered GPE with an associated
14190 _Lxx control method was incorrectly cleared twice.
14192 Fixed a problem with the Field support code where an access can
14193 occur beyond the end-of-region if the field is non-aligned but
14194 extends to the very end of the parent region (resulted in an
14195 AE_AML_REGION_LIMIT exception.)
14197 Fixed a problem with ACPI Fixed Events where an RT Clock handler
14198 would not get invoked on an RTC event. The RTC event bitmasks for
14199 the PM1 registers were not being initialized properly.
14201 Implemented support for executing _STA and _INI methods for
14202 Processor objects. Although this is currently not part of the
14203 ACPI specification, there is existing ASL code that depends on the
14204 init-time execution of these methods.
14206 Implemented and deployed a GetDescriptorName function to decode
14207 the various types of internal descriptors. Guards against null
14208 descriptors during debug output also.
14210 Implemented and deployed a GetNodeName function to extract the 4-
14211 character namespace node name. This function simplifies the debug
14212 and error output, as well as guarding against null pointers during
14215 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
14216 simplify the debug and error output of 64-bit integers. This
14217 macro replaces the HIDWORD and LODWORD macros for dumping these
14220 Updated the implementation of the Stall() operator to only call
14221 AcpiOsStall(), and also return an error if the operand is larger
14222 than 255. This preserves the required behavior of not
14223 relinquishing the processor, as would happen if AcpiOsSleep() was
14224 called for "long stalls".
14226 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
14227 initialized are now treated as NOOPs.
14229 Cleaned up a handful of warnings during 64-bit generation.
14231 Fixed a reported error where and incorrect GPE number was passed
14232 to the GPE dispatch handler. This value is only used for error
14233 output, however. Used this opportunity to clean up and streamline
14234 the GPE dispatch code.
14236 Code and Data Size: Current and previous core subsystem library
14237 sizes are shown below. These are the code and data sizes for the
14238 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14239 these values do not include any ACPI driver or OSPM code. The
14241 debug version of the code includes the debug output trace
14242 mechanism and has a much larger code and data size. Note that
14243 these values will vary depending on the efficiency of the compiler
14244 and the compiler options used during generation.
14246 Previous Release (20031002):
14247 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
14248 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
14250 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
14251 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
14254 2) iASL Compiler/Disassembler:
14256 Updated the iASL compiler to return an error if the operand to the
14257 Stall() operator is larger than 255.
14260 ----------------------------------------
14261 02 October 2003. Summary of changes for version 20031002:
14264 1) ACPI CA Core Subsystem:
14266 Fixed a problem with Index Fields where the index was not
14267 incremented for fields that require multiple writes to the
14268 index/data registers (Fields that are wider than the data
14271 Fixed a problem with all Field objects where a write could go
14272 beyond the end-of-field if the field was larger than the access
14273 granularity and therefore required multiple writes to complete the
14274 request. An extra write beyond the end of the field could happen
14277 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
14278 would incorrectly be returned if the width of the Data Register
14279 was larger than the specified field access width.
14281 Completed fixes for LoadTable() and Unload() and verified their
14282 operation. Implemented full support for the "DdbHandle" object
14283 throughout the ACPI CA subsystem.
14285 Implemented full support for the MADT and ECDT tables in the ACPI
14286 CA header files. Even though these tables are not directly
14287 consumed by ACPI CA, the header definitions are useful for ACPI
14290 Integrated resource descriptor fixes posted to the Linux ACPI
14291 list. This included checks for minimum descriptor length, and
14292 support for trailing NULL strings within descriptors that have
14293 optional string elements.
14295 Code and Data Size: Current and previous core subsystem library
14296 sizes are shown below. These are the code and data sizes for the
14297 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14298 these values do not include any ACPI driver or OSPM code. The
14299 debug version of the code includes the debug output trace
14300 mechanism and has a much larger code and data size. Note that
14301 these values will vary depending on the efficiency of the compiler
14302 and the compiler options used during generation.
14304 Previous Release (20030918):
14305 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
14306 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
14308 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
14309 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
14314 Implemented detection of non-ASCII characters within the input
14315 source ASL file. This catches attempts to compile binary (AML)
14316 files early in the compile, with an informative error message.
14318 Fixed a problem where the disassembler would fault if the output
14319 filename could not be generated or if the output file could not be
14322 ----------------------------------------
14323 18 September 2003. Summary of changes for version 20030918:
14326 1) ACPI CA Core Subsystem:
14328 Found and fixed a longstanding problem with the late execution of
14329 the various deferred AML opcodes (such as Operation Regions,
14330 Buffer Fields, Buffers, and Packages). If the name string
14331 specified for the name of the new object placed the object in a
14332 scope other than the current scope, the initialization/execution
14333 of the opcode failed. The solution to this problem was to
14334 implement a mechanism where the late execution of such opcodes
14335 does not attempt to lookup/create the name a second time in an
14336 incorrect scope. This fixes the "region size computed
14337 incorrectly" problem.
14339 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
14340 Global Lock AE_BAD_PARAMETER error.
14342 Fixed several 64-bit issues with prototypes, casting and data
14345 Removed duplicate prototype from acdisasm.h
14347 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
14349 Code and Data Size: Current and previous core subsystem library
14350 sizes are shown below. These are the code and data sizes for the
14351 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14352 these values do not include any ACPI driver or OSPM code. The
14353 debug version of the code includes the debug output trace
14354 mechanism and has a much larger code and data size. Note that
14355 these values will vary depending on the efficiency of the compiler
14356 and the compiler options used during generation.
14360 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14361 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14363 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
14364 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
14369 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
14370 correct sleep time in seconds.
14372 ----------------------------------------
14373 14 July 2003. Summary of changes for version 20030619:
14375 1) ACPI CA Core Subsystem:
14377 Parse SSDTs in order discovered, as opposed to reverse order
14380 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
14387 Dynamically allocate SDT list (suggested by Andi Kleen)
14389 proc function return value cleanups (Andi Kleen)
14391 Correctly handle NMI watchdog during long stalls (Andrew Morton)
14393 Make it so acpismp=force works (reported by Andrew Morton)
14396 ----------------------------------------
14397 19 June 2003. Summary of changes for version 20030619:
14399 1) ACPI CA Core Subsystem:
14401 Fix To/FromBCD, eliminating the need for an arch-specific #define.
14403 Do not acquire a semaphore in the S5 shutdown path.
14405 Fix ex_digits_needed for 0. (Takayoshi Kochi)
14407 Fix sleep/stall code reversal. (Andi Kleen)
14409 Revert a change having to do with control method calling
14414 acpiphp update (Takayoshi Kochi)
14416 Export acpi_disabled for sonypi (Stelian Pop)
14418 Mention acpismp=force in config help
14420 Re-add acpitable.c and acpismp=force. This improves backwards
14422 compatibility and also cleans up the code to a significant degree.
14424 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
14426 ----------------------------------------
14427 22 May 2003. Summary of changes for version 20030522:
14429 1) ACPI CA Core Subsystem:
14431 Found and fixed a reported problem where an AE_NOT_FOUND error
14432 occurred occasionally during _BST evaluation. This turned out to
14433 be an Owner ID allocation issue where a called method did not get
14434 a new ID assigned to it. Eventually, (after 64k calls), the Owner
14435 ID UINT16 would wraparound so that the ID would be the same as the
14436 caller's and the called method would delete the caller's
14439 Implemented extended error reporting for control methods that are
14440 aborted due to a run-time exception. Output includes the exact
14441 AML instruction that caused the method abort, a dump of the method
14442 locals and arguments at the time of the abort, and a trace of all
14443 nested control method calls.
14445 Modified the interpreter to allow the creation of buffers of zero
14446 length from the AML code. Implemented new code to ensure that no
14447 attempt is made to actually allocate a memory buffer (of length
14448 zero) - instead, a simple buffer object with a NULL buffer pointer
14449 and length zero is created. A warning is no longer issued when
14450 the AML attempts to create a zero-length buffer.
14452 Implemented a workaround for the "leading asterisk issue" in
14453 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
14454 asterisk is automatically removed if present in any HID, UID, or
14455 CID strings. The iASL compiler will still flag this asterisk as
14458 Implemented full support for _CID methods that return a package of
14459 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
14460 now additionally returns a device _CID list if present. This
14461 required a change to the external interface in order to pass an
14462 ACPI_BUFFER object as a parameter since the _CID list is of
14465 Fixed a problem with the new AE_SAME_HANDLER exception where
14466 handler initialization code did not know about this exception.
14468 Code and Data Size: Current and previous core subsystem library
14469 sizes are shown below. These are the code and data sizes for the
14470 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14471 these values do not include any ACPI driver or OSPM code. The
14472 debug version of the code includes the debug output trace
14473 mechanism and has a much larger code and data size. Note that
14474 these values will vary depending on the efficiency of the compiler
14475 and the compiler options used during generation.
14477 Previous Release (20030509):
14478 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14479 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14481 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14482 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14487 Fixed a bug in which we would reinitialize the ACPI interrupt
14488 after it was already working, thus disabling all ACPI and the IRQs
14489 for any other device sharing the interrupt. (Thanks to Stian
14492 Toshiba driver update (John Belmonte)
14494 Return only 0 or 1 for our interrupt handler status (Andrew
14500 Fixed a reported problem where multiple (nested) ElseIf()
14501 statements were not handled correctly by the compiler, resulting
14502 in incorrect warnings and incorrect AML code. This was a problem
14503 in both the ASL parser and the code generator.
14508 Added changes to existing interfaces, new exception codes, and new
14509 text concerning reference count object management versus garbage
14512 ----------------------------------------
14513 09 May 2003. Summary of changes for version 20030509.
14516 1) ACPI CA Core Subsystem:
14518 Changed the subsystem initialization sequence to hold off
14519 installation of address space handlers until the hardware has been
14520 initialized and the system has entered ACPI mode. This is because
14521 the installation of space handlers can cause _REG methods to be
14522 run. Previously, the _REG methods could potentially be run before
14523 ACPI mode was enabled.
14525 Fixed some memory leak issues related to address space handler and
14526 notify handler installation. There were some problems with the
14527 reference count mechanism caused by the fact that the handler
14528 objects are shared across several namespace objects.
14530 Fixed a reported problem where reference counts within the
14531 namespace were not properly updated when named objects created by
14532 method execution were deleted.
14534 Fixed a reported problem where multiple SSDTs caused a deletion
14535 issue during subsystem termination. Restructured the table data
14536 structures to simplify the linked lists and the related code.
14538 Fixed a problem where the table ID associated with secondary
14539 tables (SSDTs) was not being propagated into the namespace objects
14540 created by those tables. This would only present a problem for
14541 tables that are unloaded at run-time, however.
14543 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
14544 type as the length parameter (instead of UINT32).
14546 Solved a long-standing problem where an ALREADY_EXISTS error
14547 appears on various systems. This problem could happen when there
14548 are multiple PCI_Config operation regions under a single PCI root
14549 bus. This doesn't happen very frequently, but there are some
14550 systems that do this in the ASL.
14552 Fixed a reported problem where the internal DeleteNode function
14553 was incorrectly handling the case where a namespace node was the
14554 first in the parent's child list, and had additional peers (not
14555 the only child, but first in the list of children.)
14557 Code and Data Size: Current core subsystem library sizes are shown
14558 below. These are the code and data sizes for the acpica.lib
14559 produced by the Microsoft Visual C++ 6.0 compiler, and these
14560 values do not include any ACPI driver or OSPM code. The debug
14561 version of the code includes the debug output trace mechanism and
14562 has a much larger code and data size. Note that these values will
14563 vary depending on the efficiency of the compiler and the compiler
14564 options used during generation.
14567 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14568 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14570 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14571 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14576 Allow ":" in OS override string (Ducrot Bruno)
14578 Kobject fix (Greg KH)
14581 3 iASL Compiler/Disassembler:
14583 Fixed a problem in the generation of the C source code files (AML
14584 is emitted in C source statements for BIOS inclusion) where the
14585 Ascii dump that appears within a C comment at the end of each line
14586 could cause a compile time error if the AML sequence happens to
14587 have an open comment or close comment sequence embedded.
14590 ----------------------------------------
14591 24 April 2003. Summary of changes for version 20030424.
14594 1) ACPI CA Core Subsystem:
14596 Support for big-endian systems has been implemented. Most of the
14597 support has been invisibly added behind big-endian versions of the
14598 ACPI_MOVE_* macros.
14600 Fixed a problem in AcpiHwDisableGpeBlock() and
14601 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
14602 low level hardware write routine. The offset parameter was
14603 actually eliminated from the low level read/write routines because
14604 they had become obsolete.
14606 Fixed a problem where a handler object was deleted twice during
14607 the removal of a fixed event handler.
14612 A fix for SMP systems with link devices was contributed by
14616 (2.5) Return whether we handled the interrupt in our IRQ handler.
14617 (Linux ISRs no longer return void, so we can propagate the handler
14618 return value from the ACPI CA core back to the OS.)
14624 The ACPI CA Programmer Reference has been updated to reflect new
14625 interfaces and changes to existing interfaces.
14627 ----------------------------------------
14628 28 March 2003. Summary of changes for version 20030328.
14630 1) ACPI CA Core Subsystem:
14632 The GPE Block Device support has been completed. New interfaces
14633 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
14634 interfaces (enable, disable, clear, getstatus) have been split
14635 into separate interfaces for Fixed Events and General Purpose
14636 Events (GPEs) in order to support GPE Block Devices properly.
14638 Fixed a problem where the error message "Failed to acquire
14639 semaphore" would appear during operations on the embedded
14642 Code and Data Size: Current core subsystem library sizes are shown
14643 below. These are the code and data sizes for the acpica.lib
14644 produced by the Microsoft Visual C++ 6.0 compiler, and these
14645 values do not include any ACPI driver or OSPM code. The debug
14646 version of the code includes the debug output trace mechanism and
14647 has a much larger code and data size. Note that these values will
14648 vary depending on the efficiency of the compiler and the compiler
14649 options used during generation.
14652 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14653 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14655 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14656 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14659 ----------------------------------------
14660 28 February 2003. Summary of changes for version 20030228.
14663 1) ACPI CA Core Subsystem:
14665 The GPE handling and dispatch code has been completely overhauled
14666 in preparation for support of GPE Block Devices (ID ACPI0006).
14667 This affects internal data structures and code only; there should
14668 be no differences visible externally. One new file has been
14671 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
14672 fields that are used to determine the GPE block lengths. The
14673 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
14674 structures are ignored. This is per the ACPI specification but it
14675 isn't very clear. The full 256 Block 0/1 GPEs are now supported
14676 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
14678 In the SCI interrupt handler, removed the read of the PM1_CONTROL
14679 register to look at the SCI_EN bit. On some machines, this read
14680 causes an SMI event and greatly slows down SCI events. (This may
14681 in fact be the cause of slow battery status response on some
14684 Fixed a problem where a store of a NULL string to a package object
14685 could cause the premature deletion of the object. This was seen
14686 during execution of the battery _BIF method on some systems,
14687 resulting in no battery data being returned.
14689 Added AcpiWalkResources interface to simplify parsing of resource
14692 Code and Data Size: Current core subsystem library sizes are shown
14693 below. These are the code and data sizes for the acpica.lib
14694 produced by the Microsoft Visual C++ 6.0 compiler, and these
14695 values do not include any ACPI driver or OSPM code. The debug
14696 version of the code includes the debug output trace mechanism and
14697 has a much larger code and data size. Note that these values will
14698 vary depending on the efficiency of the compiler and the compiler
14699 options used during generation.
14702 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14703 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14705 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14706 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14711 S3 fixes (Ole Rohne)
14713 Update ACPI PHP driver with to use new acpi_walk_resource API
14716 Add S4BIOS support (Pavel Machek)
14718 Map in entire table before performing checksum (John Stultz)
14720 Expand the mem= cmdline to allow the specification of reserved and
14721 ACPI DATA blocks (Pavel Machek)
14723 Never use ACPI on VISWS
14725 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
14727 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
14728 causing us to think that some systems support C2 when they really
14731 Do not count processor objects for non-present CPUs (Thanks to
14737 Fixed a problem where ASL include files could not be found and
14740 Added support for the _PDC reserved name.
14743 ----------------------------------------
14744 22 January 2003. Summary of changes for version 20030122.
14747 1) ACPI CA Core Subsystem:
14749 Added a check for constructs of the form: Store (Local0, Local0)
14750 where Local0 is not initialized. Apparently, some BIOS
14751 programmers believe that this is a NOOP. Since this store doesn't
14752 do anything anyway, the new prototype behavior will ignore this
14753 error. This is a case where we can relax the strict checking in
14754 the interpreter in the name of compatibility.
14759 The AcpiSrc Source Conversion Utility has been released with the
14760 Linux package for the first time. This is the utility that is
14761 used to convert the ACPI CA base source code to the Linux version.
14763 (Both) Handle P_BLK lengths shorter than 6 more gracefully
14765 (Both) Move more headers to include/acpi, and delete an unused
14768 (Both) Move drivers/acpi/include directory to include/acpi
14770 (Both) Boot functions don't use cmdline, so don't pass it around
14772 (Both) Remove include of unused header (Adrian Bunk)
14774 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
14776 former now also includes the latter, acpiphp.h only needs the one,
14779 (2.5) Make it possible to select method of bios restoring after S3
14780 resume. [=> no more ugly ifdefs] (Pavel Machek)
14782 (2.5) Make proc write interfaces work (Pavel Machek)
14784 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
14786 (2.5) Break out ACPI Perf code into its own module, under cpufreq
14787 (Dominik Brodowski)
14789 (2.4) S4BIOS support (Ducrot Bruno)
14791 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
14797 Added support to disassemble SSDT and PSDTs.
14799 Implemented support to obtain SSDTs from the Windows registry if
14803 ----------------------------------------
14804 09 January 2003. Summary of changes for version 20030109.
14806 1) ACPI CA Core Subsystem:
14808 Changed the behavior of the internal Buffer-to-String conversion
14809 function. The current ACPI specification states that the contents
14810 of the buffer are "converted to a string of two-character
14811 hexadecimal numbers, each separated by a space". Unfortunately,
14812 this definition is not backwards compatible with existing ACPI 1.0
14813 implementations (although the behavior was not defined in the ACPI
14814 1.0 specification). The new behavior simply copies data from the
14815 buffer to the string until a null character is found or the end of
14816 the buffer is reached. The new String object is always null
14817 terminated. This problem was seen during the generation of _BIF
14818 battery data where incorrect strings were returned for battery
14819 type, etc. This will also require an errata to the ACPI
14822 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14823 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14825 Copyright in all module headers (both Linux and non-Linux) has be
14828 Code and Data Size: Current core subsystem library sizes are shown
14829 below. These are the code and data sizes for the acpica.lib
14830 produced by the Microsoft Visual C++ 6.0 compiler, and these
14831 values do not include any ACPI driver or OSPM code. The debug
14832 version of the code includes the debug output trace mechanism and
14833 has a much larger code and data size. Note that these values will
14834 vary depending on the efficiency of the compiler and the compiler
14835 options used during generation.
14838 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14839 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14841 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14842 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14847 Fixed an oops on module insertion/removal (Matthew Tippett)
14849 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14851 (2.5) Replace pr_debug (Randy Dunlap)
14853 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14855 (Both) Eliminate spawning of thread from timer callback, in favor
14858 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14860 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14862 (Both) Add missing statics to button.c (Pavel Machek)
14864 Several changes have been made to the source code translation
14865 utility that generates the Linux Code in order to make the code
14868 All typedefs on structs and unions have been removed in keeping
14869 with the Linux coding style.
14871 Removed the non-Linux SourceSafe module revision number from each
14874 Completed major overhaul of symbols to be lowercased for linux.
14875 Doubled the number of symbols that are lowercased.
14877 Fixed a problem where identifiers within procedure headers and
14878 within quotes were not fully lower cased (they were left with a
14881 Some C macros whose only purpose is to allow the generation of 16-
14882 bit code are now completely removed in the Linux code, increasing
14883 readability and maintainability.
14885 ----------------------------------------
14887 12 December 2002. Summary of changes for version 20021212.
14890 1) ACPI CA Core Subsystem:
14892 Fixed a problem where the creation of a zero-length AML Buffer
14893 would cause a fault.
14895 Fixed a problem where a Buffer object that pointed to a static AML
14896 buffer (in an ACPI table) could inadvertently be deleted, causing
14899 Fixed a problem where a user buffer (passed in to the external
14900 ACPI CA interfaces) could be overwritten if the buffer was too
14901 small to complete the operation, causing memory corruption.
14903 Fixed a problem in the Buffer-to-String conversion code where a
14904 string of length one was always returned, regardless of the size
14905 of the input Buffer object.
14907 Removed the NATIVE_CHAR data type across the entire source due to
14908 lack of need and lack of consistent use.
14910 Code and Data Size: Current core subsystem library sizes are shown
14911 below. These are the code and data sizes for the acpica.lib
14912 produced by the Microsoft Visual C++ 6.0 compiler, and these
14913 values do not include any ACPI driver or OSPM code. The debug
14914 version of the code includes the debug output trace mechanism and
14915 has a much larger code and data size. Note that these values will
14916 vary depending on the efficiency of the compiler and the compiler
14917 options used during generation.
14920 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14921 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14923 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14924 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14927 ----------------------------------------
14928 05 December 2002. Summary of changes for version 20021205.
14930 1) ACPI CA Core Subsystem:
14932 Fixed a problem where a store to a String or Buffer object could
14933 cause corruption of the DSDT if the object type being stored was
14934 the same as the target object type and the length of the object
14935 being stored was equal to or smaller than the original (existing)
14936 target object. This was seen to cause corruption of battery _BIF
14937 buffers if the _BIF method modified the buffer on the fly.
14939 Fixed a problem where an internal error was generated if a control
14940 method invocation was used in an OperationRegion, Buffer, or
14941 Package declaration. This was caused by the deferred parsing of
14942 the control method and thus the deferred creation of the internal
14943 method object. The solution to this problem was to create the
14944 internal method object at the moment the method is encountered in
14945 the first pass - so that subsequent references to the method will
14946 able to obtain the required parameter count and thus properly
14947 parse the method invocation. This problem presented itself as an
14948 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14950 Fixed a problem where the internal String object copy routine did
14951 not always allocate sufficient memory for the target String object
14952 and caused memory corruption. This problem was seen to cause
14953 "Allocation already present in list!" errors as memory allocation
14956 Implemented a new function for the evaluation of namespace objects
14957 that allows the specification of the allowable return object
14958 types. This simplifies a lot of code that checks for a return
14959 object of one or more specific objects returned from the
14960 evaluation (such as _STA, etc.) This may become and external
14961 function if it would be useful to ACPI-related drivers.
14963 Completed another round of prefixing #defines with "ACPI_" for
14966 Completed additional code restructuring to allow more modular
14967 linking for iASL compiler and AcpiExec. Several files were split
14968 creating new files. New files: nsparse.c dsinit.c evgpe.c
14970 Implemented an abort mechanism to terminate an executing control
14971 method via the AML debugger. This feature is useful for debugging
14972 control methods that depend (wait) for specific hardware
14975 Code and Data Size: Current core subsystem library sizes are shown
14976 below. These are the code and data sizes for the acpica.lib
14977 produced by the Microsoft Visual C++ 6.0 compiler, and these
14978 values do not include any ACPI driver or OSPM code. The debug
14979 version of the code includes the debug output trace mechanism and
14980 has a much larger code and data size. Note that these values will
14981 vary depending on the efficiency of the compiler and the compiler
14982 options used during generation.
14985 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14986 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14988 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14989 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14992 2) iASL Compiler/Disassembler
14994 Fixed a compiler code generation problem for "Interrupt" Resource
14995 Descriptors. If specified in the ASL, the optional "Resource
14996 Source Index" and "Resource Source" fields were not inserted into
14997 the correct location within the AML resource descriptor, creating
14998 an invalid descriptor.
15000 Fixed a disassembler problem for "Interrupt" resource descriptors.
15001 The optional "Resource Source Index" and "Resource Source" fields
15005 ----------------------------------------
15006 22 November 2002. Summary of changes for version 20021122.
15009 1) ACPI CA Core Subsystem:
15011 Fixed a reported problem where an object stored to a Method Local
15012 or Arg was not copied to a new object during the store - the
15013 object pointer was simply copied to the Local/Arg. This caused
15014 all subsequent operations on the Local/Arg to also affect the
15015 original source of the store operation.
15017 Fixed a problem where a store operation to a Method Local or Arg
15018 was not completed properly if the Local/Arg contained a reference
15019 (from RefOf) to a named field. The general-purpose store-to-
15020 namespace-node code is now used so that this case is handled
15023 Fixed a problem where the internal object copy routine would cause
15024 a protection fault if the object being copied was a Package and
15025 contained either 1) a NULL package element or 2) a nested sub-
15028 Fixed a problem with the GPE initialization that resulted from an
15029 ambiguity in the ACPI specification. One section of the
15030 specification states that both the address and length of the GPE
15031 block must be zero if the block is not supported. Another section
15032 implies that only the address need be zero if the block is not
15033 supported. The code has been changed so that both the address and
15034 the length must be non-zero to indicate a valid GPE block (i.e.,
15035 if either the address or the length is zero, the GPE block is
15038 Code and Data Size: Current core subsystem library sizes are shown
15039 below. These are the code and data sizes for the acpica.lib
15040 produced by the Microsoft Visual C++ 6.0 compiler, and these
15041 values do not include any ACPI driver or OSPM code. The debug
15042 version of the code includes the debug output trace mechanism and
15043 has a much larger code and data size. Note that these values will
15044 vary depending on the efficiency of the compiler and the compiler
15045 options used during generation.
15048 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
15049 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
15051 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
15052 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
15057 Cleaned up EC driver. Exported an external EC read/write
15058 interface. By going through this, other drivers (most notably
15059 sonypi) will be able to serialize access to the EC.
15062 3) iASL Compiler/Disassembler
15064 Implemented support to optionally generate include files for both
15065 ASM and C (the -i switch). This simplifies BIOS development by
15066 automatically creating include files that contain external
15067 declarations for the symbols that are created within the
15069 (optionally generated) ASM and C AML source files.
15072 ----------------------------------------
15073 15 November 2002. Summary of changes for version 20021115.
15075 1) ACPI CA Core Subsystem:
15077 Fixed a memory leak problem where an error during resolution of
15079 method arguments during a method invocation from another method
15080 failed to cleanup properly by deleting all successfully resolved
15083 Fixed a problem where the target of the Index() operator was not
15084 correctly constructed if the source object was a package. This
15085 problem has not been detected because the use of a target operand
15086 with Index() is very rare.
15088 Fixed a problem with the Index() operator where an attempt was
15089 made to delete the operand objects twice.
15091 Fixed a problem where an attempt was made to delete an operand
15092 twice during execution of the CondRefOf() operator if the target
15095 Implemented the first of perhaps several internal create object
15096 functions that create and initialize a specific object type. This
15097 consolidates duplicated code wherever the object is created, thus
15098 shrinking the size of the subsystem.
15100 Implemented improved debug/error messages for errors that occur
15101 during nested method invocations. All executing method pathnames
15102 are displayed (with the error) as the call stack is unwound - thus
15105 Fixed a problem introduced in the 10/02 release that caused
15106 premature deletion of a buffer object if a buffer was used as an
15107 ASL operand where an integer operand is required (Thus causing an
15108 implicit object conversion from Buffer to Integer.) The change in
15109 the 10/02 release was attempting to fix a memory leak (albeit
15112 Code and Data Size: Current core subsystem library sizes are shown
15113 below. These are the code and data sizes for the acpica.lib
15114 produced by the Microsoft Visual C++ 6.0 compiler, and these
15115 values do not include any ACPI driver or OSPM code. The debug
15116 version of the code includes the debug output trace mechanism and
15117 has a much larger code and data size. Note that these values will
15118 vary depending on the efficiency of the compiler and the compiler
15119 options used during generation.
15122 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
15123 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
15125 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
15126 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
15131 Changed the implementation of the ACPI semaphores to use down()
15132 instead of down_interruptable(). It is important that the
15133 execution of ACPI control methods not be interrupted by signals.
15134 Methods must run to completion, or the system may be left in an
15135 unknown/unstable state.
15137 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
15141 3) iASL Compiler/Disassembler
15144 Changed the default location of output files. All output files
15145 are now placed in the current directory by default instead of in
15146 the directory of the source file. This change may affect some
15147 existing makefiles, but it brings the behavior of the compiler in
15148 line with other similar tools. The location of the output files
15149 can be overridden with the -p command line switch.
15152 ----------------------------------------
15153 11 November 2002. Summary of changes for version 20021111.
15156 0) ACPI Specification 2.0B is released and is now available at:
15157 http://www.acpi.info/index.html
15160 1) ACPI CA Core Subsystem:
15162 Implemented support for the ACPI 2.0 SMBus Operation Regions.
15163 This includes the early detection and handoff of the request to
15164 the SMBus region handler (avoiding all of the complex field
15165 support code), and support for the bidirectional return packet
15166 from an SMBus write operation. This paves the way for the
15167 development of SMBus drivers in each host operating system.
15169 Fixed a problem where the semaphore WAIT_FOREVER constant was
15170 defined as 32 bits, but must be 16 bits according to the ACPI
15171 specification. This had the side effect of causing ASL
15172 Mutex/Event timeouts even though the ASL code requested a wait
15173 forever. Changed all internal references to the ACPI timeout
15174 parameter to 16 bits to prevent future problems. Changed the name
15175 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
15177 Code and Data Size: Current core subsystem library sizes are shown
15178 below. These are the code and data sizes for the acpica.lib
15179 produced by the Microsoft Visual C++ 6.0 compiler, and these
15180 values do not include any ACPI driver or OSPM code. The debug
15181 version of the code includes the debug output trace mechanism and
15182 has a much larger code and data size. Note that these values will
15183 vary depending on the efficiency of the compiler and the compiler
15184 options used during generation.
15187 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
15188 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
15190 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
15191 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
15196 Module loading/unloading fixes (John Cagle)
15199 3) iASL Compiler/Disassembler
15201 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
15203 Implemented support for the disassembly of all SMBus protocol
15204 keywords (SMBQuick, SMBWord, etc.)
15206 ----------------------------------------
15207 01 November 2002. Summary of changes for version 20021101.
15210 1) ACPI CA Core Subsystem:
15212 Fixed a problem where platforms that have a GPE1 block but no GPE0
15213 block were not handled correctly. This resulted in a "GPE
15214 overlap" error message. GPE0 is no longer required.
15216 Removed code added in the previous release that inserted nodes
15217 into the namespace in alphabetical order. This caused some side-
15218 effects on various machines. The root cause of the problem is
15219 still under investigation since in theory, the internal ordering
15220 of the namespace nodes should not matter.
15223 Enhanced error reporting for the case where a named object is not
15224 found during control method execution. The full ACPI namepath
15225 (name reference) of the object that was not found is displayed in
15228 Note: as a result of the overhaul of the namespace object types in
15229 the previous release, the namespace nodes for the predefined
15230 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
15231 instead of ACPI_TYPE_ANY. This simplifies the namespace
15232 management code but may affect code that walks the namespace tree
15233 looking for specific object types.
15235 Code and Data Size: Current core subsystem library sizes are shown
15236 below. These are the code and data sizes for the acpica.lib
15237 produced by the Microsoft Visual C++ 6.0 compiler, and these
15238 values do not include any ACPI driver or OSPM code. The debug
15239 version of the code includes the debug output trace mechanism and
15240 has a much larger code and data size. Note that these values will
15241 vary depending on the efficiency of the compiler and the compiler
15242 options used during generation.
15245 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
15246 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
15248 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
15249 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
15254 Fixed a problem introduced in the previous release where the
15255 Processor and Thermal objects were not recognized and installed in
15256 /proc. This was related to the scope type change described above.
15259 3) iASL Compiler/Disassembler
15261 Implemented the -g option to get all of the required ACPI tables
15262 from the registry and save them to files (Windows version of the
15263 compiler only.) The required tables are the FADT, FACS, and DSDT.
15265 Added ACPI table checksum validation during table disassembly in
15266 order to catch corrupted tables.
15269 ----------------------------------------
15270 22 October 2002. Summary of changes for version 20021022.
15272 1) ACPI CA Core Subsystem:
15274 Implemented a restriction on the Scope operator that the target
15275 must already exist in the namespace at the time the operator is
15276 encountered (during table load or method execution). In other
15277 words, forward references are not allowed and Scope() cannot
15278 create a new object. This changes the previous behavior where the
15279 interpreter would create the name if not found. This new behavior
15280 correctly enables the search-to-root algorithm during namespace
15281 lookup of the target name. Because of this upsearch, this fixes
15282 the known Compaq _SB_.OKEC problem and makes both the AML
15283 interpreter and iASL compiler compatible with other ACPI
15286 Completed a major overhaul of the internal ACPI object types for
15287 the ACPI Namespace and the associated operand objects. Many of
15288 these types had become obsolete with the introduction of the two-
15289 pass namespace load. This cleanup simplifies the code and makes
15290 the entire namespace load mechanism much clearer and easier to
15293 Improved debug output for tracking scope opening/closing to help
15294 diagnose scoping issues. The old scope name as well as the new
15295 scope name are displayed. Also improved error messages for
15296 problems with ASL Mutex objects and error messages for GPE
15299 Cleaned up the namespace dump code, removed obsolete code.
15301 All string output (for all namespace/object dumps) now uses the
15302 common ACPI string output procedure which handles escapes properly
15303 and does not emit non-printable characters.
15305 Fixed some issues with constants in the 64-bit version of the
15306 local C library (utclib.c)
15311 EC Driver: No longer attempts to acquire the Global Lock at
15315 3) iASL Compiler/Disassembler
15317 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
15318 2 opcodes outside of a control method. This means that the
15319 "executable" operators (versus the "namespace" operators) cannot
15320 be used at the table level; they can only be used within a control
15323 Implemented the restriction on the Scope() operator where the
15324 target must already exist in the namespace at the time the
15325 operator is encountered (during ASL compilation). In other words,
15326 forward references are not allowed and Scope() cannot create a new
15327 object. This makes the iASL compiler compatible with other ACPI
15328 implementations and makes the Scope() implementation adhere to the
15329 ACPI specification.
15331 Fixed a problem where namepath optimization for the Alias operator
15332 was optimizing the wrong path (of the two namepaths.) This caused
15333 a "Missing alias link" error message.
15335 Fixed a problem where an "unknown reserved name" warning could be
15336 incorrectly generated for names like "_SB" when the trailing
15337 underscore is not used in the original ASL.
15339 Fixed a problem where the reserved name check did not handle
15340 NamePaths with multiple NameSegs correctly. The first nameseg of
15341 the NamePath was examined instead of the last NameSeg.
15344 ----------------------------------------
15346 02 October 2002. Summary of changes for this release.
15349 1) ACPI CA Core Subsystem version 20021002:
15351 Fixed a problem where a store/copy of a string to an existing
15352 string did not always set the string length properly in the String
15355 Fixed a reported problem with the ToString operator where the
15356 behavior was identical to the ToHexString operator instead of just
15357 simply converting a raw buffer to a string data type.
15359 Fixed a problem where CopyObject and the other "explicit"
15360 conversion operators were not updating the internal namespace node
15361 type as part of the store operation.
15363 Fixed a memory leak during implicit source operand conversion
15364 where the original object was not deleted if it was converted to a
15365 new object of a different type.
15367 Enhanced error messages for all problems associated with namespace
15368 lookups. Common procedure generates and prints the lookup name as
15369 well as the formatted status.
15371 Completed implementation of a new design for the Alias support
15372 within the namespace. The existing design did not handle the case
15373 where a new object was assigned to one of the two names due to the
15374 use of an explicit conversion operator, resulting in the two names
15375 pointing to two different objects. The new design simply points
15376 the Alias name to the original name node - not to the object.
15377 This results in a level of indirection that must be handled in the
15378 name resolution mechanism.
15380 Code and Data Size: Current core subsystem library sizes are shown
15381 below. These are the code and data sizes for the acpica.lib
15382 produced by the Microsoft Visual C++ 6.0 compiler, and these
15383 values do not include any ACPI driver or OSPM code. The debug
15384 version of the code includes the debug output trace mechanism and
15385 has a larger code and data size. Note that these values will vary
15386 depending on the efficiency of the compiler and the compiler
15387 options used during generation.
15390 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15391 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15393 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
15394 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
15399 Initialize thermal driver's timer before it is used. (Knut
15402 Allow handling negative celsius values. (Kochi Takayoshi)
15404 Fix thermal management and make trip points. R/W (Pavel Machek)
15406 Fix /proc/acpi/sleep. (P. Christeas)
15408 IA64 fixes. (David Mosberger)
15410 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
15412 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
15416 3) iASL Compiler/Disassembler
15418 Clarified some warning/error messages.
15421 ----------------------------------------
15422 18 September 2002. Summary of changes for this release.
15425 1) ACPI CA Core Subsystem version 20020918:
15427 Fixed a reported problem with reference chaining (via the Index()
15428 and RefOf() operators) in the ObjectType() and SizeOf() operators.
15429 The definition of these operators includes the dereferencing of
15430 all chained references to return information on the base object.
15432 Fixed a problem with stores to indexed package elements - the
15433 existing code would not complete the store if an "implicit
15434 conversion" was not performed. In other words, if the existing
15435 object (package element) was to be replaced completely, the code
15436 didn't handle this case.
15438 Relaxed typechecking on the ASL "Scope" operator to allow the
15439 target name to refer to an object of type Integer, String, or
15440 Buffer, in addition to the scoping object types (Device,
15441 predefined Scopes, Processor, PowerResource, and ThermalZone.)
15442 This allows existing AML code that has workarounds for a bug in
15443 Windows to function properly. A warning is issued, however. This
15444 affects both the AML interpreter and the iASL compiler. Below is
15445 an example of this type of ASL code:
15451 Fixed some reported problems with 64-bit integer support in the
15452 local implementation of C library functions (clib.c)
15457 Use ACPI fix map region instead of IOAPIC region, since it is
15458 undefined in non-SMP.
15460 Ensure that the SCI has the proper polarity and trigger, even on
15461 systems that do not have an interrupt override entry in the MADT.
15463 2.5 big driver reorganization (Pat Mochel)
15465 Use early table mapping code from acpitable.c (Andi Kleen)
15467 New blacklist entries (Andi Kleen)
15469 Blacklist improvements. Split blacklist code out into a separate
15470 file. Move checking the blacklist to very early. Previously, we
15471 would use ACPI tables, and then halfway through init, check the
15472 blacklist -- too late. Now, it's early enough to completely fall-
15476 3) iASL Compiler/Disassembler version 20020918:
15478 Fixed a problem where the typechecking code didn't know that an
15479 alias could point to a method. In other words, aliases were not
15480 being dereferenced during typechecking.
15483 ----------------------------------------
15484 29 August 2002. Summary of changes for this release.
15486 1) ACPI CA Core Subsystem Version 20020829:
15488 If the target of a Scope() operator already exists, it must be an
15489 object type that actually opens a scope -- such as a Device,
15490 Method, Scope, etc. This is a fatal runtime error. Similar error
15491 check has been added to the iASL compiler also.
15493 Tightened up the namespace load to disallow multiple names in the
15494 same scope. This previously was allowed if both objects were of
15495 the same type. (i.e., a lookup was the same as entering a new
15501 Ensure that the ACPI interrupt has the proper trigger and
15504 local_irq_disable is extraneous. (Matthew Wilcox)
15506 Make "acpi=off" actually do what it says, and not use the ACPI
15507 interpreter *or* the tables.
15509 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
15513 3) iASL Compiler/Disassembler Version 20020829:
15515 Implemented namepath optimization for name declarations. For
15516 example, a declaration like "Method (\_SB_.ABCD)" would get
15517 optimized to "Method (ABCD)" if the declaration is within the
15518 \_SB_ scope. This optimization is in addition to the named
15519 reference path optimization first released in the previous
15520 version. This would seem to complete all possible optimizations
15521 for namepaths within the ASL/AML.
15523 If the target of a Scope() operator already exists, it must be an
15524 object type that actually opens a scope -- such as a Device,
15525 Method, Scope, etc.
15527 Implemented a check and warning for unreachable code in the same
15528 block below a Return() statement.
15530 Fixed a problem where the listing file was not generated if the
15531 compiler aborted if the maximum error count was exceeded (200).
15533 Fixed a problem where the typechecking of method return values was
15534 broken. This includes the check for a return value when the
15535 method is invoked as a TermArg (a return value is expected.)
15537 Fixed a reported problem where EOF conditions during a quoted
15538 string or comment caused a fault.
15541 ----------------------------------------
15542 15 August 2002. Summary of changes for this release.
15544 1) ACPI CA Core Subsystem Version 20020815:
15546 Fixed a reported problem where a Store to a method argument that
15547 contains a reference did not perform the indirect store correctly.
15548 This problem was created during the conversion to the new
15549 reference object model - the indirect store to a method argument
15550 code was not updated to reflect the new model.
15552 Reworked the ACPI mode change code to better conform to ACPI 2.0,
15553 handle corner cases, and improve code legibility (Kochi Takayoshi)
15555 Fixed a problem with the pathname parsing for the carat (^)
15556 prefix. The heavy use of the carat operator by the new namepath
15557 optimization in the iASL compiler uncovered a problem with the AML
15558 interpreter handling of this prefix. In the case where one or
15559 more carats precede a single nameseg, the nameseg was treated as
15560 standalone and the search rule (to root) was inadvertently
15561 applied. This could cause both the iASL compiler and the
15562 interpreter to find the wrong object or to miss the error that
15563 should occur if the object does not exist at that exact pathname.
15565 Found and fixed the problem where the HP Pavilion DSDT would not
15566 load. This was a relatively minor tweak to the table loading code
15567 (a problem caused by the unexpected encounter with a method
15568 invocation not within a control method), but it does not solve the
15569 overall issue of the execution of AML code at the table level.
15570 This investigation is still ongoing.
15572 Code and Data Size: Current core subsystem library sizes are shown
15573 below. These are the code and data sizes for the acpica.lib
15574 produced by the Microsoft Visual C++ 6.0 compiler, and these
15575 values do not include any ACPI driver or OSPM code. The debug
15576 version of the code includes the debug output trace mechanism and
15577 has a larger code and data size. Note that these values will vary
15578 depending on the efficiency of the compiler and the compiler
15579 options used during generation.
15582 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15583 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15585 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15586 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15591 Remove redundant slab.h include (Brad Hards)
15593 Fix several bugs in thermal.c (Herbert Nachtnebel)
15595 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
15597 Change acpi_system_suspend to use updated irq functions (Pavel
15600 Export acpi_get_firmware_table (Matthew Wilcox)
15602 Use proper root proc entry for ACPI (Kochi Takayoshi)
15604 Fix early-boot table parsing (Bjorn Helgaas)
15607 3) iASL Compiler/Disassembler
15609 Reworked the compiler options to make them more consistent and to
15610 use two-letter options where appropriate. We were running out of
15611 sensible letters. This may break some makefiles, so check the
15612 current options list by invoking the compiler with no parameters.
15614 Completed the design and implementation of the ASL namepath
15615 optimization option for the compiler. This option optimizes all
15616 references to named objects to the shortest possible path. The
15617 first attempt tries to utilize a single nameseg (4 characters) and
15618 the "search-to-root" algorithm used by the interpreter. If that
15619 cannot be used (because either the name is not in the search path
15620 or there is a conflict with another object with the same name),
15621 the pathname is optimized using the carat prefix (usually a
15622 shorter string than specifying the entire path from the root.)
15624 Implemented support to obtain the DSDT from the Windows registry
15625 (when the disassembly option is specified with no input file).
15626 Added this code as the implementation for AcpiOsTableOverride in
15627 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
15628 utility) to scan memory for the DSDT to the AcpiOsTableOverride
15629 function in the DOS OSL to make the disassembler truly OS
15632 Implemented a new option to disassemble and compile in one step.
15633 When used without an input filename, this option will grab the
15634 DSDT from the local machine, disassemble it, and compile it in one
15637 Added a warning message for invalid escapes (a backslash followed
15638 by any character other than the allowable escapes). This catches
15639 the quoted string error "\_SB_" (which should be "\\_SB_" ).
15641 Also, there are numerous instances in the ACPI specification where
15644 Added a compiler option to disable all optimizations. This is
15645 basically the "compatibility mode" because by using this option,
15646 the AML code will come out exactly the same as other ASL
15649 Added error messages for incorrectly ordered dependent resource
15650 functions. This includes: missing EndDependentFn macro at end of
15651 dependent resource list, nested dependent function macros (both
15652 start and end), and missing StartDependentFn macro. These are
15653 common errors that should be caught at compile time.
15655 Implemented _OSI support for the disassembler and compiler. _OSI
15656 must be included in the namespace for proper disassembly (because
15657 the disassembler must know the number of arguments.)
15659 Added an "optimization" message type that is optional (off by
15660 default). This message is used for all optimizations - including
15661 constant folding, integer optimization, and namepath optimization.
15663 ----------------------------------------
15664 25 July 2002. Summary of changes for this release.
15667 1) ACPI CA Core Subsystem Version 20020725:
15669 The AML Disassembler has been enhanced to produce compilable ASL
15670 code and has been integrated into the iASL compiler (see below) as
15671 well as the single-step disassembly for the AML debugger and the
15672 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
15673 resource templates and macros are fully supported. The
15674 disassembler has been tested on over 30 different AML files,
15675 producing identical AML when the resulting disassembled ASL file
15676 is recompiled with the same ASL compiler.
15678 Modified the Resource Manager to allow zero interrupts and zero
15679 dma channels during the GetCurrentResources call. This was
15680 causing problems on some platforms.
15682 Added the AcpiOsRedirectOutput interface to the OSL to simplify
15683 output redirection for the AcpiOsPrintf and AcpiOsVprintf
15686 Code and Data Size: Current core subsystem library sizes are shown
15687 below. These are the code and data sizes for the acpica.lib
15688 produced by the Microsoft Visual C++ 6.0 compiler, and these
15689 values do not include any ACPI driver or OSPM code. The debug
15690 version of the code includes the debug output trace mechanism and
15691 has a larger code and data size. Note that these values will vary
15692 depending on the efficiency of the compiler and the compiler
15693 options used during generation.
15696 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15697 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15699 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15700 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15705 Fixed a panic in the EC driver (Dominik Brodowski)
15707 Implemented checksum of the R/XSDT itself during Linux table scan
15713 The AML disassembler is integrated into the compiler. The "-d"
15714 option invokes the disassembler to completely disassemble an
15715 input AML file, producing as output a text ASL file with the
15716 extension ".dsl" (to avoid name collisions with existing .asl
15717 source files.) A future enhancement will allow the disassembler
15718 to obtain the BIOS DSDT from the registry under Windows.
15720 Fixed a problem with the VendorShort and VendorLong resource
15721 descriptors where an invalid AML sequence was created.
15723 Implemented a fix for BufferData term in the ASL parser. It was
15724 inadvertently defined twice, allowing invalid syntax to pass and
15725 causing reduction conflicts.
15727 Fixed a problem where the Ones opcode could get converted to a
15728 value of zero if "Ones" was used where a byte, word or dword value
15729 was expected. The 64-bit value is now truncated to the correct
15730 size with the correct value.
15734 ----------------------------------------
15735 02 July 2002. Summary of changes for this release.
15738 1) ACPI CA Core Subsystem Version 20020702:
15740 The Table Manager code has been restructured to add several new
15741 features. Tables that are not required by the core subsystem
15742 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
15743 validated in any way and are returned from AcpiGetFirmwareTable if
15744 requested. The AcpiOsTableOverride interface is now called for
15745 each table that is loaded by the subsystem in order to allow the
15746 host to override any table it chooses. Previously, only the DSDT
15747 could be overridden. Added one new files, tbrsdt.c and
15750 Fixed a problem with the conversion of internal package objects to
15751 external objects (when a package is returned from a control
15752 method.) The return buffer length was set to zero instead of the
15753 proper length of the package object.
15755 Fixed a reported problem with the use of the RefOf and DeRefOf
15756 operators when passing reference arguments to control methods. A
15757 new type of Reference object is used internally for references
15758 produced by the RefOf operator.
15760 Added additional error messages in the Resource Manager to explain
15761 AE_BAD_DATA errors when they occur during resource parsing.
15763 Split the AcpiEnableSubsystem into two primitives to enable a
15764 finer granularity initialization sequence. These two calls should
15765 be called in this order: AcpiEnableSubsystem (flags),
15766 AcpiInitializeObjects (flags). The flags parameter remains the
15772 Updated the ACPI utilities module to understand the new style of
15773 fully resolved package objects that are now returned from the core
15774 subsystem. This eliminates errors of the form:
15776 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
15777 acpi_utils-0430 [145] acpi_evaluate_reference:
15778 Invalid element in package (not a device reference)
15780 The method evaluation utility uses the new buffer allocation
15781 scheme instead of calling AcpiEvaluate Object twice.
15783 Added support for ECDT. This allows the use of the Embedded
15785 Controller before the namespace has been fully initialized, which
15786 is necessary for ACPI 2.0 support, and for some laptops to
15787 initialize properly. (Laptops using ECDT are still rare, so only
15788 limited testing was performed of the added functionality.)
15790 Fixed memory leaks in the EC driver.
15792 Eliminated a brittle code structure in acpi_bus_init().
15794 Eliminated the acpi_evaluate() helper function in utils.c. It is
15795 no longer needed since acpi_evaluate_object can optionally
15796 allocate memory for the return object.
15798 Implemented fix for keyboard hang when getting battery readings on
15799 some systems (Stephen White)
15801 PCI IRQ routing update (Dominik Brodowski)
15803 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15806 ----------------------------------------
15807 11 June 2002. Summary of changes for this release.
15810 1) ACPI CA Core Subsystem Version 20020611:
15812 Fixed a reported problem where constants such as Zero and One
15813 appearing within _PRT packages were not handled correctly within
15814 the resource manager code. Originally reported against the ASL
15815 compiler because the code generator now optimizes integers to
15816 their minimal AML representation (i.e. AML constants if possible.)
15817 The _PRT code now handles all AML constant opcodes correctly
15818 (Zero, One, Ones, Revision).
15820 Fixed a problem with the Concatenate operator in the AML
15821 interpreter where a buffer result object was incorrectly marked as
15822 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15824 All package sub-objects are now fully resolved before they are
15825 returned from the external ACPI interfaces. This means that name
15826 strings are resolved to object handles, and constant operators
15827 (Zero, One, Ones, Revision) are resolved to Integers.
15829 Implemented immediate resolution of the AML Constant opcodes
15830 (Zero, One, Ones, Revision) to Integer objects upon detection
15831 within the AML stream. This has simplified and reduced the
15832 generated code size of the subsystem by eliminating about 10
15833 switch statements for these constants (which previously were
15834 contained in Reference objects.) The complicating issues are that
15835 the Zero opcode is used as a "placeholder" for unspecified
15836 optional target operands and stores to constants are defined to be
15839 Code and Data Size: Current core subsystem library sizes are shown
15840 below. These are the code and data sizes for the acpica.lib
15841 produced by the Microsoft Visual C++ 6.0 compiler, and these
15842 values do not include any ACPI driver or OSPM code. The debug
15843 version of the code includes the debug output trace mechanism and
15844 has a larger code and data size. Note that these values will vary
15845 depending on the efficiency of the compiler and the compiler
15846 options used during generation.
15849 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15850 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15852 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15853 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15859 Added preliminary support for obtaining _TRA data for PCI root
15860 bridges (Bjorn Helgaas).
15863 3) iASL Compiler Version X2046:
15865 Fixed a problem where the "_DDN" reserved name was defined to be a
15866 control method with one argument. There are no arguments, and
15867 _DDN does not have to be a control method.
15869 Fixed a problem with the Linux version of the compiler where the
15870 source lines printed with error messages were the wrong lines.
15871 This turned out to be the "LF versus CR/LF" difference between
15872 Windows and Unix. This appears to be the longstanding issue
15873 concerning listing output and error messages.
15875 Fixed a problem with the Linux version of compiler where opcode
15876 names within error messages were wrong. This was caused by a
15877 slight difference in the output of the Flex tool on Linux versus
15880 Fixed a problem with the Linux compiler where the hex output files
15881 contained some garbage data caused by an internal buffer overrun.
15884 ----------------------------------------
15885 17 May 2002. Summary of changes for this release.
15888 1) ACPI CA Core Subsystem Version 20020517:
15890 Implemented a workaround to an BIOS bug discovered on the HP
15891 OmniBook where the FADT revision number and the table size are
15892 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15893 behavior is to fallback to using only the ACPI 1.0 fields of the
15894 FADT if the table is too small to be a ACPI 2.0 table as claimed
15895 by the revision number. Although this is a BIOS bug, this is a
15896 case where the workaround is simple enough and with no side
15897 effects, so it seemed prudent to add it. A warning message is
15900 Implemented minimum size checks for the fixed-length ACPI tables -
15901 - the FADT and FACS, as well as consistency checks between the
15902 revision number and the table size.
15904 Fixed a reported problem in the table override support where the
15905 new table pointer was incorrectly treated as a physical address
15906 instead of a logical address.
15908 Eliminated the use of the AE_AML_ERROR exception and replaced it
15909 with more descriptive codes.
15911 Fixed a problem where an exception would occur if an ASL Field was
15912 defined with no named Field Units underneath it (used by some
15915 Code and Data Size: Current core subsystem library sizes are shown
15916 below. These are the code and data sizes for the acpica.lib
15917 produced by the Microsoft Visual C++ 6.0 compiler, and these
15918 values do not include any ACPI driver or OSPM code. The debug
15919 version of the code includes the debug output trace mechanism and
15920 has a larger code and data size. Note that these values will vary
15921 depending on the efficiency of the compiler and the compiler
15922 options used during generation.
15925 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15926 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15928 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15929 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15935 Much work done on ACPI init (MADT and PCI IRQ routing support).
15936 (Paul D. and Dominik Brodowski)
15938 Fix PCI IRQ-related panic on boot (Sam Revitch)
15940 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15942 Fix "MHz" typo (Dominik Brodowski)
15944 Fix RTC year 2000 issue (Dominik Brodowski)
15946 Preclude multiple button proc entries (Eric Brunet)
15948 Moved arch-specific code out of include/platform/aclinux.h
15950 3) iASL Compiler Version X2044:
15952 Implemented error checking for the string used in the EISAID macro
15953 (Usually used in the definition of the _HID object.) The code now
15954 strictly enforces the PnP format - exactly 7 characters, 3
15955 uppercase letters and 4 hex digits.
15957 If a raw string is used in the definition of the _HID object
15958 (instead of the EISAID macro), the string must contain all
15959 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15962 Implemented checking for invalid use of ACPI reserved names for
15963 most of the name creation operators (Name, Device, Event, Mutex,
15964 OperationRegion, PowerResource, Processor, and ThermalZone.)
15965 Previously, this check was only performed for control methods.
15967 Implemented an additional check on the Name operator to emit an
15968 error if a reserved name that must be implemented in ASL as a
15969 control method is used. We know that a reserved name must be a
15970 method if it is defined with input arguments.
15972 The warning emitted when a namespace object reference is not found
15973 during the cross reference phase has been changed into an error.
15974 The "External" directive should be used for names defined in other
15978 4) Tools and Utilities
15980 The 16-bit tools (adump16 and aexec16) have been regenerated and
15983 Fixed a problem with the output of both acpidump and adump16 where
15984 the indentation of closing parentheses and brackets was not
15986 aligned properly with the parent block.
15989 ----------------------------------------
15990 03 May 2002. Summary of changes for this release.
15993 1) ACPI CA Core Subsystem Version 20020503:
15995 Added support a new OSL interface that allows the host operating
15997 system software to override the DSDT found in the firmware -
15998 AcpiOsTableOverride. With this interface, the OSL can examine the
15999 version of the firmware DSDT and replace it with a different one
16002 Added new external interfaces for accessing ACPI registers from
16003 device drivers and other system software - AcpiGetRegister and
16004 AcpiSetRegister. This was simply an externalization of the
16005 existing AcpiHwBitRegister interfaces.
16007 Fixed a regression introduced in the previous build where the
16008 ASL/AML CreateField operator always returned an error,
16009 "destination must be a NS Node".
16011 Extended the maximum time (before failure) to successfully enable
16012 ACPI mode to 3 seconds.
16014 Code and Data Size: Current core subsystem library sizes are shown
16015 below. These are the code and data sizes for the acpica.lib
16016 produced by the Microsoft Visual C++ 6.0 compiler, and these
16017 values do not include any ACPI driver or OSPM code. The debug
16018 version of the code includes the debug output trace mechanism and
16019 has a larger code and data size. Note that these values will vary
16020 depending on the efficiency of the compiler and the compiler
16021 options used during generation.
16024 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
16025 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
16027 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
16028 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
16033 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
16034 free. While 3 out of 4 of our in-house systems work fine, the last
16035 one still hangs when testing the LAPIC timer.
16037 Renamed many files in 2.5 kernel release to omit "acpi_" from the
16040 Added warning on boot for Presario 711FR.
16042 Sleep improvements (Pavel Machek)
16044 ACPI can now be built without CONFIG_PCI enabled.
16046 IA64: Fixed memory map functions (JI Lee)
16049 3) iASL Compiler Version X2043:
16051 Added support to allow the compiler to be integrated into the MS
16052 VC++ development environment for one-button compilation of single
16053 files or entire projects -- with error-to-source-line mapping.
16055 Implemented support for compile-time constant folding for the
16056 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
16057 specification. This allows the ASL writer to use expressions
16058 instead of Integer/Buffer/String constants in terms that must
16059 evaluate to constants at compile time and will also simplify the
16060 emitted AML in any such sub-expressions that can be folded
16061 (evaluated at compile-time.) This increases the size of the
16062 compiler significantly because a portion of the ACPI CA AML
16063 interpreter is included within the compiler in order to pre-
16064 evaluate constant expressions.
16067 Fixed a problem with the "Unicode" ASL macro that caused the
16068 compiler to fault. (This macro is used in conjunction with the
16069 _STR reserved name.)
16071 Implemented an AML opcode optimization to use the Zero, One, and
16072 Ones opcodes where possible to further reduce the size of integer
16073 constants and thus reduce the overall size of the generated AML
16076 Implemented error checking for new reserved terms for ACPI version
16079 Implemented the -qr option to display the current list of ACPI
16080 reserved names known to the compiler.
16082 Implemented the -qc option to display the current list of ASL
16083 operators that are allowed within constant expressions and can
16084 therefore be folded at compile time if the operands are constants.
16089 Updated the Programmer's Reference for new interfaces, data types,
16090 and memory allocation model options.
16092 Updated the iASL Compiler User Reference to apply new format and
16093 add information about new features and options.
16095 ----------------------------------------
16096 19 April 2002. Summary of changes for this release.
16098 1) ACPI CA Core Subsystem Version 20020419:
16100 The source code base for the Core Subsystem has been completely
16101 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
16102 versions. The Lint option files used are included in the
16103 /acpi/generate/lint directory.
16105 Implemented enhanced status/error checking across the entire
16106 Hardware manager subsystem. Any hardware errors (reported from
16107 the OSL) are now bubbled up and will abort a running control
16111 Fixed a problem where the per-ACPI-table integer width (32 or 64)
16112 was stored only with control method nodes, causing a fault when
16113 non-control method code was executed during table loading. The
16114 solution implemented uses a global variable to indicate table
16115 width across the entire ACPI subsystem. Therefore, ACPI CA does
16116 not support mixed integer widths across different ACPI tables
16119 Fixed a problem where NULL extended fields (X fields) in an ACPI
16120 2.0 ACPI FADT caused the table load to fail. Although the
16121 existing ACPI specification is a bit fuzzy on this topic, the new
16122 behavior is to fall back on a ACPI 1.0 field if the corresponding
16123 ACPI 2.0 X field is zero (even though the table revision indicates
16124 a full ACPI 2.0 table.) The ACPI specification will be updated to
16125 clarify this issue.
16127 Fixed a problem with the SystemMemory operation region handler
16128 where memory was always accessed byte-wise even if the AML-
16129 specified access width was larger than a byte. This caused
16130 problems on systems with memory-mapped I/O. Memory is now
16131 accessed with the width specified. On systems that do not support
16132 non-aligned transfers, a check is made to guarantee proper address
16133 alignment before proceeding in order to avoid an AML-caused
16134 alignment fault within the kernel.
16137 Fixed a problem with the ExtendedIrq resource where only one byte
16138 of the 4-byte Irq field was extracted.
16140 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
16141 function was out of date and required a rewrite.
16143 Code and Data Size: Current core subsystem library sizes are shown
16144 below. These are the code and data sizes for the acpica.lib
16145 produced by the Microsoft Visual C++ 6.0 compiler, and these
16146 values do not include any ACPI driver or OSPM code. The debug
16147 version of the code includes the debug output trace mechanism and
16148 has a larger code and data size. Note that these values will vary
16149 depending on the efficiency of the compiler and the compiler
16150 options used during generation.
16153 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
16154 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
16156 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
16157 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
16162 PCI IRQ routing fixes (Dominik Brodowski)
16165 3) iASL Compiler Version X2042:
16167 Implemented an additional compile-time error check for a field
16168 unit whose size + minimum access width would cause a run-time
16169 access beyond the end-of-region. Previously, only the field size
16170 itself was checked.
16172 The Core subsystem and iASL compiler now share a common parse
16173 object in preparation for compile-time evaluation of the type
16174 3/4/5 ASL operators.
16177 ----------------------------------------
16178 Summary of changes for this release: 03_29_02
16180 1) ACPI CA Core Subsystem Version 20020329:
16182 Implemented support for late evaluation of TermArg operands to
16183 Buffer and Package objects. This allows complex expressions to be
16184 used in the declarations of these object types.
16186 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
16187 1.0, if the field was larger than 32 bits, it was returned as a
16188 buffer - otherwise it was returned as an integer. In ACPI 2.0,
16189 the field is returned as a buffer only if the field is larger than
16190 64 bits. The TableRevision is now considered when making this
16191 conversion to avoid incompatibility with existing ASL code.
16193 Implemented logical addressing for AcpiOsGetRootPointer. This
16194 allows an RSDP with either a logical or physical address. With
16195 this support, the host OS can now override all ACPI tables with
16196 one logical RSDP. Includes implementation of "typed" pointer
16197 support to allow a common data type for both physical and logical
16198 pointers internally. This required a change to the
16199 AcpiOsGetRootPointer interface.
16201 Implemented the use of ACPI 2.0 Generic Address Structures for all
16202 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
16203 mapped I/O for these ACPI features.
16205 Initialization now ignores not only non-required tables (All
16206 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
16207 not validate the table headers of unrecognized tables.
16209 Fixed a problem where a notify handler could only be
16210 installed/removed on an object of type Device. All "notify"
16212 objects are now supported -- Devices, Processor, Power, and
16215 Removed most verbosity from the ACPI_DB_INFO debug level. Only
16216 critical information is returned when this debug level is enabled.
16218 Code and Data Size: Current core subsystem library sizes are shown
16219 below. These are the code and data sizes for the acpica.lib
16220 produced by the Microsoft Visual C++ 6.0 compiler, and these
16221 values do not include any ACPI driver or OSPM code. The debug
16222 version of the code includes the debug output trace mechanism and
16223 has a larger code and data size. Note that these values will vary
16224 depending on the efficiency of the compiler and the compiler
16225 options used during generation.
16228 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
16229 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
16231 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
16232 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
16237 The processor driver (acpi_processor.c) now fully supports ACPI
16238 2.0-based processor performance control (e.g. Intel(R)
16239 SpeedStep(TM) technology) Note that older laptops that only have
16240 the Intel "applet" interface are not supported through this. The
16241 'limit' and 'performance' interface (/proc) are fully functional.
16242 [Note that basic policy for controlling performance state
16243 transitions will be included in the next version of ospmd.] The
16244 idle handler was modified to more aggressively use C2, and PIIX4
16245 errata handling underwent a complete overhaul (big thanks to
16246 Dominik Brodowski).
16248 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
16249 based devices in the ACPI namespace are now dynamically bound
16250 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
16251 This allows, among other things, ACPI to resolve bus numbers for
16252 subordinate PCI bridges.
16254 Enhanced PCI IRQ routing to get the proper bus number for _PRT
16255 entries defined underneath PCI bridges.
16257 Added IBM 600E to bad bios list due to invalid _ADR value for
16258 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
16260 In the process of adding full MADT support (e.g. IOAPIC) for IA32
16261 (acpi.c, mpparse.c) -- stay tuned.
16263 Added back visual differentiation between fixed-feature and
16264 control-method buttons in dmesg. Buttons are also subtyped (e.g.
16265 button/power/PWRF) to simplify button identification.
16267 We no longer use -Wno-unused when compiling debug. Please ignore
16268 any "_THIS_MODULE defined but not used" messages.
16270 Can now shut down the system using "magic sysrq" key.
16273 3) iASL Compiler version 2041:
16275 Fixed a problem where conversion errors for hex/octal/decimal
16276 constants were not reported.
16278 Implemented a fix for the General Register template Address field.
16279 This field was 8 bits when it should be 64.
16281 Fixed a problem where errors/warnings were no longer being emitted
16282 within the listing output file.
16284 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
16285 exactly 4 characters, alphanumeric only.
16290 ----------------------------------------
16291 Summary of changes for this release: 03_08_02
16294 1) ACPI CA Core Subsystem Version 20020308:
16296 Fixed a problem with AML Fields where the use of the "AccessAny"
16297 keyword could cause an interpreter error due to attempting to read
16298 or write beyond the end of the parent Operation Region.
16300 Fixed a problem in the SystemMemory Operation Region handler where
16301 an attempt was made to map memory beyond the end of the region.
16302 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
16303 errors on some Linux systems.
16305 Fixed a problem where the interpreter/namespace "search to root"
16306 algorithm was not functioning for some object types. Relaxed the
16307 internal restriction on the search to allow upsearches for all
16308 external object types as well as most internal types.
16313 We now use safe_halt() macro versus individual calls to sti | hlt.
16315 Writing to the processor limit interface should now work. "echo 1"
16316 will increase the limit, 2 will decrease, and 0 will reset to the
16323 Fixed segfault on Linux version.
16326 ----------------------------------------
16327 Summary of changes for this release: 02_25_02
16329 1) ACPI CA Core Subsystem:
16332 Fixed a problem where the GPE bit masks were not initialized
16333 properly, causing erratic GPE behavior.
16335 Implemented limited support for multiple calling conventions. The
16336 code can be generated with either the VPL (variable parameter
16337 list, or "C") convention, or the FPL (fixed parameter list, or
16338 "Pascal") convention. The core subsystem is about 3.4% smaller
16339 when generated with FPL.
16344 Re-add some /proc/acpi/event functionality that was lost during
16347 Resolved issue with /proc events for fixed-feature buttons showing
16348 up as the system device.
16350 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
16352 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
16354 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
16356 Fixed limit interface & usage to fix bugs with passive cooling
16359 Restructured PRT support.
16362 ----------------------------------------
16363 Summary of changes for this label: 02_14_02
16366 1) ACPI CA Core Subsystem:
16368 Implemented support in AcpiLoadTable to allow loading of FACS and
16371 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
16372 been removed. All 64-bit platforms should be migrated to the ACPI
16373 2.0 tables. The actbl71.h header has been removed from the source
16376 All C macros defined within the subsystem have been prefixed with
16377 "ACPI_" to avoid collision with other system include files.
16379 Removed the return value for the two AcpiOsPrint interfaces, since
16380 it is never used and causes lint warnings for ignoring the return
16383 Added error checking to all internal mutex acquire and release
16384 calls. Although a failure from one of these interfaces is
16385 probably a fatal system error, these checks will cause the
16386 immediate abort of the currently executing method or interface.
16388 Fixed a problem where the AcpiSetCurrentResources interface could
16389 fault. This was a side effect of the deployment of the new memory
16392 Fixed a couple of problems with the Global Lock support introduced
16393 in the last major build. The "common" (1.0/2.0) internal FACS was
16394 being overwritten with the FACS signature and clobbering the
16395 Global Lock pointer. Also, the actual firmware FACS was being
16396 unmapped after construction of the "common" FACS, preventing
16397 access to the actual Global Lock field within it. The "common"
16398 internal FACS is no longer installed as an actual ACPI table; it
16399 is used simply as a global.
16401 Code and Data Size: Current core subsystem library sizes are shown
16402 below. These are the code and data sizes for the acpica.lib
16403 produced by the Microsoft Visual C++ 6.0 compiler, and these
16404 values do not include any ACPI driver or OSPM code. The debug
16405 version of the code includes the debug output trace mechanism and
16406 has a larger code and data size. Note that these values will vary
16407 depending on the efficiency of the compiler and the compiler
16408 options used during generation.
16410 Previous Release (02_07_01)
16411 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16412 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16414 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
16415 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
16420 Updated Linux-specific code for core macro and OSL interface
16421 changes described above.
16423 Improved /proc/acpi/event. It now can be opened only once and has
16424 proper poll functionality.
16426 Fixed and restructured power management (acpi_bus).
16428 Only create /proc "view by type" when devices of that class exist.
16430 Fixed "charging/discharging" bug (and others) in acpi_battery.
16432 Improved thermal zone code.
16435 3) ASL Compiler, version X2039:
16438 Implemented the new compiler restriction on ASL String hex/octal
16439 escapes to non-null, ASCII values. An error results if an invalid
16440 value is used. (This will require an ACPI 2.0 specification
16443 AML object labels that are output to the optional C and ASM source
16444 are now prefixed with both the ACPI table signature and table ID
16445 to help guarantee uniqueness within a large BIOS project.
16448 ----------------------------------------
16449 Summary of changes for this label: 02_01_02
16451 1) ACPI CA Core Subsystem:
16453 ACPI 2.0 support is complete in the entire Core Subsystem and the
16454 ASL compiler. All new ACPI 2.0 operators are implemented and all
16455 other changes for ACPI 2.0 support are complete. With
16456 simultaneous code and data optimizations throughout the subsystem,
16457 ACPI 2.0 support has been implemented with almost no additional
16458 cost in terms of code and data size.
16460 Implemented a new mechanism for allocation of return buffers. If
16461 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
16462 be allocated on behalf of the caller. Consolidated all return
16463 buffer validation and allocation to a common procedure. Return
16464 buffers will be allocated via the primary OSL allocation interface
16465 since it appears that a separate pool is not needed by most users.
16466 If a separate pool is required for these buffers, the caller can
16467 still use the original mechanism and pre-allocate the buffer(s).
16469 Implemented support for string operands within the DerefOf
16472 Restructured the Hardware and Event managers to be table driven,
16473 simplifying the source code and reducing the amount of generated
16476 Split the common read/write low-level ACPI register bitfield
16477 procedure into a separate read and write, simplifying the code
16480 Obsoleted the AcpiOsCallocate OSL interface. This interface was
16481 used only a handful of times and didn't have enough critical mass
16482 for a separate interface. Replaced with a common calloc procedure
16485 Fixed a reported problem with the GPE number mapping mechanism
16486 that allows GPE1 numbers to be non-contiguous with GPE0.
16487 Reorganized the GPE information and shrunk a large array that was
16488 originally large enough to hold info for all possible GPEs (256)
16489 to simply large enough to hold all GPEs up to the largest GPE
16490 number on the machine.
16492 Fixed a reported problem with resource structure alignment on 64-
16495 Changed the AcpiEnableEvent and AcpiDisableEvent external
16496 interfaces to not require any flags for the common case of
16497 enabling/disabling a GPE.
16499 Implemented support to allow a "Notify" on a Processor object.
16501 Most TBDs in comments within the source code have been resolved
16505 Fixed a problem in the interpreter where a standalone parent
16506 prefix (^) was not handled correctly in the interpreter and
16509 Removed obsolete and unnecessary GPE save/restore code.
16511 Implemented Field support in the ASL Load operator. This allows a
16512 table to be loaded from a named field, in addition to loading a
16513 table directly from an Operation Region.
16515 Implemented timeout and handle support in the external Global Lock
16518 Fixed a problem in the AcpiDump utility where pathnames were no
16519 longer being generated correctly during the dump of named objects.
16521 Modified the AML debugger to give a full display of if/while
16522 predicates instead of just one AML opcode at a time. (The
16523 predicate can have several nested ASL statements.) The old method
16524 was confusing during single stepping.
16526 Code and Data Size: Current core subsystem library sizes are shown
16527 below. These are the code and data sizes for the acpica.lib
16528 produced by the Microsoft Visual C++ 6.0 compiler, and these
16529 values do not include any ACPI driver or OSPM code. The debug
16530 version of the code includes the debug output trace mechanism and
16531 has a larger code and data size. Note that these values will vary
16532 depending on the efficiency of the compiler and the compiler
16533 options used during generation.
16535 Previous Release (12_18_01)
16536 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16537 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16539 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16540 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16544 Implemented fix for PIIX reverse throttling errata (Processor
16547 Added new Limit interface (Processor and Thermal drivers)
16549 New thermal policy (Thermal driver)
16551 Many updates to /proc
16553 Battery "low" event support (Battery driver)
16555 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
16557 IA32 - IA64 initialization unification, no longer experimental
16559 Menuconfig options redesigned
16561 3) ASL Compiler, version X2037:
16563 Implemented several new output features to simplify integration of
16564 AML code into firmware: 1) Output the AML in C source code with
16565 labels for each named ASL object. The original ASL source code
16566 is interleaved as C comments. 2) Output the AML in ASM source code
16567 with labels and interleaved ASL source. 3) Output the AML in
16568 raw hex table form, in either C or ASM.
16570 Implemented support for optional string parameters to the
16571 LoadTable operator.
16573 Completed support for embedded escape sequences within string
16574 literals. The compiler now supports all single character escapes
16575 as well as the Octal and Hex escapes. Note: the insertion of a
16576 null byte into a string literal (via the hex/octal escape) causes
16577 the string to be immediately terminated. A warning is issued.
16579 Fixed a problem where incorrect AML was generated for the case
16580 where an ASL namepath consists of a single parent prefix (
16582 ) with no trailing name segments.
16584 The compiler has been successfully generated with a 64-bit C
16590 ----------------------------------------
16591 Summary of changes for this label: 12_18_01
16595 Enhanced blacklist with reason and severity fields. Any table's
16596 signature may now be used to identify a blacklisted system.
16598 Call _PIC control method to inform the firmware which interrupt
16599 model the OS is using. Turn on any disabled link devices.
16601 Cleaned up busmgr /proc error handling (Andreas Dilger)
16603 2) ACPI CA Core Subsystem:
16605 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
16608 Completed implementation of the ACPI 2.0 "Continue",
16609 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
16610 operators. All new ACPI 2.0 operators are now implemented in both
16611 the ASL compiler and the AML interpreter. The only remaining ACPI
16612 2.0 task is support for the String data type in the DerefOf
16613 operator. Fixed a problem with AcquireMutex where the status code
16614 was lost if the caller had to actually wait for the mutex.
16616 Increased the maximum ASL Field size from 64K bits to 4G bits.
16618 Completed implementation of the external Global Lock interfaces --
16619 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
16620 Handler parameters were added.
16622 Completed another pass at removing warnings and issues when
16623 compiling with 64-bit compilers. The code now compiles cleanly
16624 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
16625 add and subtract (diff) macros have changed considerably.
16628 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
16629 64-bit platforms, 32-bits on all others. This type is used
16630 wherever memory allocation and/or the C sizeof() operator is used,
16631 and affects the OSL memory allocation interfaces AcpiOsAllocate
16632 and AcpiOsCallocate.
16634 Implemented sticky user breakpoints in the AML debugger.
16636 Code and Data Size: Current core subsystem library sizes are shown
16637 below. These are the code and data sizes for the acpica.lib
16638 produced by the Microsoft Visual C++ 6.0 compiler, and these
16639 values do not include any ACPI driver or OSPM code. The debug
16640 version of the code includes the debug output trace mechanism and
16641 has a larger code and data size. Note that these values will vary
16642 depending on the efficiency of the compiler and the compiler
16643 options used during generation.
16645 Previous Release (12_05_01)
16646 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16647 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16649 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16650 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16652 3) ASL Compiler, version X2034:
16654 Now checks for (and generates an error if detected) the use of a
16655 Break or Continue statement without an enclosing While statement.
16658 Successfully generated the compiler with the Intel 64-bit C
16661 ----------------------------------------
16662 Summary of changes for this label: 12_05_01
16664 1) ACPI CA Core Subsystem:
16666 The ACPI 2.0 CopyObject operator is fully implemented. This
16667 operator creates a new copy of an object (and is also used to
16668 bypass the "implicit conversion" mechanism of the Store operator.)
16670 The ACPI 2.0 semantics for the SizeOf operator are fully
16671 implemented. The change is that performing a SizeOf on a
16672 reference object causes an automatic dereference of the object to
16673 tha actual value before the size is evaluated. This behavior was
16674 undefined in ACPI 1.0.
16676 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
16677 have been implemented. The interrupt polarity and mode are now
16680 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
16681 appearing in Package objects were not properly converted to
16682 integers when the internal Package was converted to an external
16683 object (via the AcpiEvaluateObject interface.)
16685 Fixed a problem with the namespace object deletion mechanism for
16686 objects created by control methods. There were two parts to this
16687 problem: 1) Objects created during the initialization phase method
16688 parse were not being deleted, and 2) The object owner ID mechanism
16689 to track objects was broken.
16691 Fixed a problem where the use of the ASL Scope operator within a
16692 control method would result in an invalid opcode exception.
16694 Fixed a problem introduced in the previous label where the buffer
16695 length required for the _PRT structure was not being returned
16698 Code and Data Size: Current core subsystem library sizes are shown
16699 below. These are the code and data sizes for the acpica.lib
16700 produced by the Microsoft Visual C++ 6.0 compiler, and these
16701 values do not include any ACPI driver or OSPM code. The debug
16702 version of the code includes the debug output trace mechanism and
16703 has a larger code and data size. Note that these values will vary
16704 depending on the efficiency of the compiler and the compiler
16705 options used during generation.
16707 Previous Release (11_20_01)
16708 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16709 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16712 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16713 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16717 Updated all files to apply cleanly against 2.4.16.
16719 Added basic PCI Interrupt Routing Table (PRT) support for IA32
16720 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
16721 version supports both static and dyanmic PRT entries, but dynamic
16722 entries are treated as if they were static (not yet
16723 reconfigurable). Architecture- specific code to use this data is
16724 absent on IA32 but should be available shortly.
16726 Changed the initialization sequence to start the ACPI interpreter
16727 (acpi_init) prior to initialization of the PCI driver (pci_init)
16728 in init/main.c. This ordering is required to support PRT and
16729 facilitate other (future) enhancement. A side effect is that the
16730 ACPI bus driver and certain device drivers can no longer be loaded
16733 Modified the 'make menuconfig' options to allow PCI Interrupt
16734 Routing support to be included without the ACPI Bus and other
16737 3) ASL Compiler, version X2033:
16739 Fixed some issues with the use of the new CopyObject and
16740 DataTableRegion operators. Both are fully functional.
16742 ----------------------------------------
16743 Summary of changes for this label: 11_20_01
16745 20 November 2001. Summary of changes for this release.
16747 1) ACPI CA Core Subsystem:
16749 Updated Index support to match ACPI 2.0 semantics. Storing a
16750 Integer, String, or Buffer to an Index of a Buffer will store only
16751 the least-significant byte of the source to the Indexed buffer
16752 byte. Multiple writes are not performed.
16754 Fixed a problem where the access type used in an AccessAs ASL
16755 operator was not recorded correctly into the field object.
16757 Fixed a problem where ASL Event objects were created in a
16758 signalled state. Events are now created in an unsignalled state.
16760 The internal object cache is now purged after table loading and
16761 initialization to reduce the use of dynamic kernel memory -- on
16762 the assumption that object use is greatest during the parse phase
16763 of the entire table (versus the run-time use of individual control
16766 ACPI 2.0 variable-length packages are now fully operational.
16768 Code and Data Size: Code and Data optimizations have permitted new
16769 feature development with an actual reduction in the library size.
16770 Current core subsystem library sizes are shown below. These are
16771 the code and data sizes for the acpica.lib produced by the
16772 Microsoft Visual C++ 6.0 compiler, and these values do not include
16773 any ACPI driver or OSPM code. The debug version of the code
16774 includes the debug output trace mechanism and has a larger code
16775 and data size. Note that these values will vary depending on the
16776 efficiency of the compiler and the compiler options used during
16779 Previous Release (11_09_01):
16780 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16781 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16784 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16785 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16789 Enhanced the ACPI boot-time initialization code to allow the use
16790 of Local APIC tables for processor enumeration on IA-32, and to
16791 pave the way for a fully MPS-free boot (on SMP systems) in the
16792 near future. This functionality replaces
16793 arch/i386/kernel/acpitables.c, which was introduced in an earlier
16794 2.4.15-preX release. To enable this feature you must add
16795 "acpi_boot=on" to the kernel command line -- see the help entry
16796 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16799 Restructured the configuration options to allow boot-time table
16800 parsing support without inclusion of the ACPI Interpreter (and
16803 NOTE: This release does not include fixes for the reported events,
16804 power-down, and thermal passive cooling issues (coming soon).
16808 Added additional typechecking for Fields within restricted access
16809 Operation Regions. All fields within EC and CMOS regions must be
16810 declared with ByteAcc. All fields withing SMBus regions must be
16811 declared with the BufferAcc access type.
16813 Fixed a problem where the listing file output of control methods
16814 no longer interleaved the actual AML code with the ASL source
16820 ----------------------------------------
16821 Summary of changes for this label: 11_09_01
16823 1) ACPI CA Core Subsystem:
16825 Implemented ACPI 2.0-defined support for writes to fields with a
16826 Buffer, String, or Integer source operand that is smaller than the
16827 target field. In these cases, the source operand is zero-extended
16828 to fill the target field.
16830 Fixed a problem where a Field starting bit offset (within the
16831 parent operation region) was calculated incorrectly if the
16833 alignment of the field differed from the access width. This
16834 affected CreateWordField, CreateDwordField, CreateQwordField, and
16835 possibly other fields that use the "AccessAny" keyword.
16837 Fixed a problem introduced in the 11_02_01 release where indirect
16838 stores through method arguments did not operate correctly.
16842 Implemented boot-time ACPI table parsing support
16843 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16844 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16845 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16846 processors, memory, and interrupts during setup_arch(). Note that
16847 this patch does not include the required architecture-specific
16848 changes required to apply this information -- subsequent patches
16849 will be posted for both IA32 and IA64 to achieve this.
16851 Added low-level sleep support for IA32 platforms, courtesy of Pat
16852 Mochel. This allows IA32 systems to transition to/from various
16853 sleeping states (e.g. S1, S3), although the lack of a centralized
16854 driver model and power-manageable drivers will prevent its
16855 (successful) use on most systems.
16857 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16858 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16859 tables" option, etc.
16861 Increased the default timeout for the EC driver from 1ms to 10ms
16862 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16865 ----------------------------------------
16866 Summary of changes for this label: 11_02_01
16868 1) ACPI CA Core Subsystem:
16870 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16871 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16874 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16875 changes to support ACPI 2.0 Qword field access. Read/Write
16876 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16877 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16878 the value parameter for the address space handler interface is now
16879 an ACPI_INTEGER. OSL implementations of these interfaces must now
16880 handle the case where the Width parameter is 64.
16882 Index Fields: Fixed a problem where unaligned bit assembly and
16883 disassembly for IndexFields was not supported correctly.
16885 Index and Bank Fields: Nested Index and Bank Fields are now
16886 supported. During field access, a check is performed to ensure
16887 that the value written to an Index or Bank register is not out of
16888 the range of the register. The Index (or Bank) register is
16889 written before each access to the field data. Future support will
16890 include allowing individual IndexFields to be wider than the
16891 DataRegister width.
16893 Fields: Fixed a problem where the AML interpreter was incorrectly
16894 attempting to write beyond the end of a Field/OpRegion. This was
16895 a boundary case that occurred when a DWORD field was written to a
16896 BYTE access OpRegion, forcing multiple writes and causing the
16897 interpreter to write one datum too many.
16899 Fields: Fixed a problem with Field/OpRegion access where the
16900 starting bit address of a field was incorrectly calculated if the
16901 current access type was wider than a byte (WordAcc, DwordAcc, or
16904 Fields: Fixed a problem where forward references to individual
16905 FieldUnits (individual Field names within a Field definition) were
16906 not resolved during the AML table load.
16908 Fields: Fixed a problem where forward references from a Field
16909 definition to the parent Operation Region definition were not
16910 resolved during the AML table load.
16912 Fields: Duplicate FieldUnit names within a scope are now detected
16913 during AML table load.
16915 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16916 returned an incorrect name for the root node.
16918 Code and Data Size: Code and Data optimizations have permitted new
16919 feature development with an actual reduction in the library size.
16920 Current core subsystem library sizes are shown below. These are
16921 the code and data sizes for the acpica.lib produced by the
16922 Microsoft Visual C++ 6.0 compiler, and these values do not include
16923 any ACPI driver or OSPM code. The debug version of the code
16924 includes the debug output trace mechanism and has a larger code
16925 and data size. Note that these values will vary depending on the
16926 efficiency of the compiler and the compiler options used during
16929 Previous Release (10_18_01):
16930 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16931 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16934 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16935 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16939 Improved /proc processor output (Pavel Machek) Re-added
16940 MODULE_LICENSE("GPL") to all modules.
16942 3) ASL Compiler version X2030:
16944 Duplicate FieldUnit names within a scope are now detected and
16949 Programmer Reference updated to reflect OSL and address space
16950 handler interface changes described above.
16952 ----------------------------------------
16953 Summary of changes for this label: 10_18_01
16955 ACPI CA Core Subsystem:
16957 Fixed a problem with the internal object reference count mechanism
16958 that occasionally caused premature object deletion. This resolves
16959 all of the outstanding problem reports where an object is deleted
16960 in the middle of an interpreter evaluation. Although this problem
16961 only showed up in rather obscure cases, the solution to the
16962 problem involved an adjustment of all reference counts involving
16963 objects attached to namespace nodes.
16965 Fixed a problem with Field support in the interpreter where
16966 writing to an aligned field whose length is an exact multiple (2
16967 or greater) of the field access granularity would cause an attempt
16968 to write beyond the end of the field.
16970 The top level AML opcode execution functions within the
16971 interpreter have been renamed with a more meaningful and
16972 consistent naming convention. The modules exmonad.c and
16973 exdyadic.c were eliminated. New modules are exoparg1.c,
16974 exoparg2.c, exoparg3.c, and exoparg6.c.
16976 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16978 Fixed a problem where the AML debugger was causing some internal
16979 objects to not be deleted during subsystem termination.
16981 Fixed a problem with the external AcpiEvaluateObject interface
16982 where the subsystem would fault if the named object to be
16983 evaluated refered to a constant such as Zero, Ones, etc.
16985 Fixed a problem with IndexFields and BankFields where the
16986 subsystem would fault if the index, data, or bank registers were
16987 not defined in the same scope as the field itself.
16989 Added printf format string checking for compilers that support
16990 this feature. Corrected more than 50 instances of issues with
16991 format specifiers within invocations of ACPI_DEBUG_PRINT
16992 throughout the core subsystem code.
16994 The ASL "Revision" operator now returns the ACPI support level
16995 implemented in the core - the value "2" since the ACPI 2.0 support
16996 is more than 50% implemented.
16998 Enhanced the output of the AML debugger "dump namespace" command
16999 to output in a more human-readable form.
17001 Current core subsystem library code sizes are shown below. These
17003 are the code and data sizes for the acpica.lib produced by the
17004 Microsoft Visual C++ 6.0 compiler, and these values do not include
17005 any ACPI driver or OSPM code. The debug version of the code
17006 includes the full debug trace mechanism -- leading to a much
17008 larger code and data size. Note that these values will vary
17009 depending on the efficiency of the compiler and the compiler
17010 options used during generation.
17012 Previous Label (09_20_01):
17013 Non-Debug Version: 65K Code, 5K Data, 70K Total
17014 Debug Version: 138K Code, 58K Data, 196K Total
17018 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
17019 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
17023 Implemented a "Bad BIOS Blacklist" to track machines that have
17024 known ASL/AML problems.
17026 Enhanced the /proc interface for the thermal zone driver and added
17027 support for _HOT (the critical suspend trip point). The 'info'
17028 file now includes threshold/policy information, and allows setting
17029 of _SCP (cooling preference) and _TZP (polling frequency) values
17030 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
17031 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
17032 preference to the passive/quiet mode (if supported by the ASL).
17034 Implemented a workaround for a gcc bug that resuted in an OOPs
17035 when loading the control method battery driver.
17037 ----------------------------------------
17038 Summary of changes for this label: 09_20_01
17040 ACPI CA Core Subsystem:
17042 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
17043 modified to allow individual GPE levels to be flagged as wake-
17044 enabled (i.e., these GPEs are to remain enabled when the platform
17047 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
17048 support wake-enabled GPEs. This means that upon entering the
17049 sleep state, all GPEs that are not wake-enabled are disabled.
17050 When leaving the sleep state, these GPEs are reenabled.
17052 A local double-precision divide/modulo module has been added to
17053 enhance portability to OS kernels where a 64-bit math library is
17054 not available. The new module is "utmath.c".
17056 Several optimizations have been made to reduce the use of CPU
17057 stack. Originally over 2K, the maximum stack usage is now below
17058 2K at 1860 bytes (1.82k)
17060 Fixed a problem with the AcpiGetFirmwareTable interface where the
17061 root table pointer was not mapped into a logical address properly.
17063 Fixed a problem where a NULL pointer was being dereferenced in the
17064 interpreter code for the ASL Notify operator.
17066 Fixed a problem where the use of the ASL Revision operator
17067 returned an error. This operator now returns the current version
17068 of the ACPI CA core subsystem.
17070 Fixed a problem where objects passed as control method parameters
17071 to AcpiEvaluateObject were always deleted at method termination.
17072 However, these objects may end up being stored into the namespace
17073 by the called method. The object reference count mechanism was
17074 applied to these objects instead of a force delete.
17076 Fixed a problem where static strings or buffers (contained in the
17077 AML code) that are declared as package elements within the ASL
17078 code could cause a fault because the interpreter would attempt to
17079 delete them. These objects are now marked with the "static
17080 object" flag to prevent any attempt to delete them.
17082 Implemented an interpreter optimization to use operands directly
17083 from the state object instead of extracting the operands to local
17084 variables. This reduces stack use and code size, and improves
17087 The module exxface.c was eliminated as it was an unnecessary extra
17090 Current core subsystem library code sizes are shown below. These
17091 are the code and data sizes for the acpica.lib produced by the
17092 Microsoft Visual C++ 6.0 compiler, and these values do not include
17093 any ACPI driver or OSPM code. The debug version of the code
17094 includes the full debug trace mechanism -- leading to a much
17095 larger code and data size. Note that these values will vary
17096 depending on the efficiency of the compiler and the compiler
17097 options used during generation.
17099 Non-Debug Version: 65K Code, 5K Data, 70K Total
17100 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
17101 Total (Previously 195K)
17105 Support for ACPI 2.0 64-bit integers has been added. All ACPI
17106 Integer objects are now 64 bits wide
17108 All Acpi data types and structures are now in lower case. Only
17109 Acpi macros are upper case for differentiation.
17113 Changes to the external interfaces as described above.
17115 ----------------------------------------
17116 Summary of changes for this label: 08_31_01
17118 ACPI CA Core Subsystem:
17120 A bug with interpreter implementation of the ASL Divide operator
17121 was found and fixed. The implicit function return value (not the
17122 explicit store operands) was returning the remainder instead of
17123 the quotient. This was a longstanding bug and it fixes several
17124 known outstanding issues on various platforms.
17126 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
17127 been further optimized for size. There are 700 invocations of the
17128 DEBUG_PRINT macro alone, so each optimization reduces the size of
17129 the debug version of the subsystem significantly.
17131 A stack trace mechanism has been implemented. The maximum stack
17132 usage is about 2K on 32-bit platforms. The debugger command "stat
17133 stack" will display the current maximum stack usage.
17135 All public symbols and global variables within the subsystem are
17136 now prefixed with the string "Acpi". This keeps all of the
17137 symbols grouped together in a kernel map, and avoids conflicts
17138 with other kernel subsystems.
17140 Most of the internal fixed lookup tables have been moved into the
17141 code segment via the const operator.
17143 Several enhancements have been made to the interpreter to both
17144 reduce the code size and improve performance.
17146 Current core subsystem library code sizes are shown below. These
17147 are the code and data sizes for the acpica.lib produced by the
17148 Microsoft Visual C++ 6.0 compiler, and these values do not include
17149 any ACPI driver or OSPM code. The debug version of the code
17150 includes the full debug trace mechanism which contains over 700
17151 invocations of the DEBUG_PRINT macro, 500 function entry macro
17152 invocations, and over 900 function exit macro invocations --
17153 leading to a much larger code and data size. Note that these
17154 values will vary depending on the efficiency of the compiler and
17155 the compiler options used during generation.
17157 Non-Debug Version: 64K Code, 5K Data, 69K Total
17158 Debug Version: 137K Code, 58K Data, 195K Total
17162 Implemented wbinvd() macro, pending a kernel-wide definition.
17164 Fixed /proc/acpi/event to handle poll() and short reads.
17166 ASL Compiler, version X2026:
17168 Fixed a problem introduced in the previous label where the AML
17170 code emitted for package objects produced packages with zero
17173 ----------------------------------------
17174 Summary of changes for this label: 08_16_01
17176 ACPI CA Core Subsystem:
17178 The following ACPI 2.0 ASL operators have been implemented in the
17179 AML interpreter (These are already supported by the Intel ASL
17180 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
17181 ToBuffer. Support for 64-bit AML constants is implemented in the
17182 AML parser, debugger, and disassembler.
17184 The internal memory tracking mechanism (leak detection code) has
17185 been upgraded to reduce the memory overhead (a separate tracking
17186 block is no longer allocated for each memory allocation), and now
17187 supports all of the internal object caches.
17189 The data structures and code for the internal object caches have
17190 been coelesced and optimized so that there is a single cache and
17191 memory list data structure and a single group of functions that
17192 implement generic cache management. This has reduced the code
17193 size in both the debug and release versions of the subsystem.
17195 The DEBUG_PRINT macro(s) have been optimized for size and replaced
17196 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
17197 different, because it generates a single call to an internal
17198 function. This results in a savings of about 90 bytes per
17199 invocation, resulting in an overall code and data savings of about
17200 16% in the debug version of the subsystem.
17204 Fixed C3 disk corruption problems and re-enabled C3 on supporting
17207 Integrated low-level sleep code by Patrick Mochel.
17209 Further tweaked source code Linuxization.
17215 Support for ACPI 2.0 variable length packages is fixed/completed.
17217 Fixed a problem where the optional length parameter for the ACPI
17218 2.0 ToString operator.
17220 Fixed multiple extraneous error messages when a syntax error is
17221 detected within the declaration line of a control method.
17223 ----------------------------------------
17224 Summary of changes for this label: 07_17_01
17226 ACPI CA Core Subsystem:
17228 Added a new interface named AcpiGetFirmwareTable to obtain any
17229 ACPI table via the ACPI signature. The interface can be called at
17230 any time during kernel initialization, even before the kernel
17231 virtual memory manager is initialized and paging is enabled. This
17232 allows kernel subsystems to obtain ACPI tables very early, even
17233 before the ACPI CA subsystem is initialized.
17235 Fixed a problem where Fields defined with the AnyAcc attribute
17236 could be resolved to the incorrect address under the following
17237 conditions: 1) the field width is larger than 8 bits and 2) the
17238 parent operation region is not defined on a DWORD boundary.
17240 Fixed a problem where the interpreter is not being locked during
17241 namespace initialization (during execution of the _INI control
17242 methods), causing an error when an attempt is made to release it
17245 ACPI 2.0 support in the AML Interpreter has begun and will be
17246 ongoing throughout the rest of this year. In this label, The Mod
17247 operator is implemented.
17249 Added a new data type to contain full PCI addresses named
17250 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
17251 and Function values.
17255 Enhanced the Linux version of the source code to change most
17256 capitalized ACPI type names to lowercase. For example, all
17257 instances of ACPI_STATUS are changed to acpi_status. This will
17258 result in a large diff, but the change is strictly cosmetic and
17259 aligns the CA code closer to the Linux coding standard.
17263 The interfaces to the PCI configuration space have been changed to
17264 add the PCI Segment number and to split the single 32-bit combined
17265 DeviceFunction field into two 16-bit fields. This was
17266 accomplished by moving the four values that define an address in
17267 PCI configuration space (segment, bus, device, and function) to
17268 the new ACPI_PCI_ID structure.
17270 The changes to the PCI configuration space interfaces led to a
17271 reexamination of the complete set of address space access
17272 interfaces for PCI, I/O, and Memory. The previously existing 18
17273 interfaces have proven difficult to maintain (any small change
17274 must be propagated across at least 6 interfaces) and do not easily
17275 allow for future expansion to 64 bits if necessary. Also, on some
17276 systems, it would not be appropriate to demultiplex the access
17277 width (8, 16, 32,or 64) before calling the OSL if the
17278 corresponding native OS interfaces contain a similar access width
17279 parameter. For these reasons, the 18 address space interfaces
17280 have been replaced by these 6 new ones:
17282 AcpiOsReadPciConfiguration
17283 AcpiOsWritePciConfiguration
17289 Added a new interface named AcpiOsGetRootPointer to allow the OSL
17290 to perform the platform and/or OS-specific actions necessary to
17291 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
17292 interface will simply call down to the CA core to perform the low-
17293 memory search for the table. On IA-64, the RSDP is obtained from
17294 EFI. Migrating this interface to the OSL allows the CA core to
17296 remain OS and platform independent.
17298 Added a new interface named AcpiOsSignal to provide a generic
17299 "function code and pointer" interface for various miscellaneous
17300 signals and notifications that must be made to the host OS. The
17301 first such signals are intended to support the ASL Fatal and
17302 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
17303 interface has been obsoleted.
17305 The definition of the AcpiFormatException interface has been
17306 changed to simplify its use. The caller no longer must supply a
17307 buffer to the call; A pointer to a const string is now returned
17308 directly. This allows the call to be easily used in printf
17309 statements, etc. since the caller does not have to manage a local
17313 ASL Compiler, Version X2025:
17315 The ACPI 2.0 Switch/Case/Default operators have been implemented
17316 and are fully functional. They will work with all ACPI 1.0
17317 interpreters, since the operators are simply translated to If/Else
17320 The ACPI 2.0 ElseIf operator is implemented and will also work
17321 with 1.0 interpreters, for the same reason.
17323 Implemented support for ACPI 2.0 variable-length packages. These
17324 packages have a separate opcode, and their size is determined by
17325 the interpreter at run-time.
17327 Documentation The ACPI CA Programmer Reference has been updated to
17328 reflect the new interfaces and changes to existing interfaces.
17330 ------------------------------------------
17331 Summary of changes for this label: 06_15_01
17333 ACPI CA Core Subsystem:
17335 Fixed a problem where a DWORD-accessed field within a Buffer
17336 object would get its byte address inadvertently rounded down to
17337 the nearest DWORD. Buffers are always Byte-accessible.
17339 ASL Compiler, version X2024:
17341 Fixed a problem where the Switch() operator would either fault or
17342 hang the compiler. Note however, that the AML code for this ACPI
17343 2.0 operator is not yet implemented.
17345 Compiler uses the new AcpiOsGetTimer interface to obtain compile
17348 Implementation of the CreateField operator automatically converts
17349 a reference to a named field within a resource descriptor from a
17350 byte offset to a bit offset if required.
17352 Added some missing named fields from the resource descriptor
17353 support. These are the names that are automatically created by the
17354 compiler to reference fields within a descriptor. They are only
17355 valid at compile time and are not passed through to the AML
17358 Resource descriptor named fields are now typed as Integers and
17359 subject to compile-time typechecking when used in expressions.
17361 ------------------------------------------
17362 Summary of changes for this label: 05_18_01
17364 ACPI CA Core Subsystem:
17366 Fixed a couple of problems in the Field support code where bits
17367 from adjacent fields could be returned along with the proper field
17368 bits. Restructured the field support code to improve performance,
17369 readability and maintainability.
17371 New DEBUG_PRINTP macro automatically inserts the procedure name
17372 into the output, saving hundreds of copies of procedure name
17373 strings within the source, shrinking the memory footprint of the
17374 debug version of the core subsystem.
17376 Source Code Structure:
17378 The source code directory tree was restructured to reflect the
17379 current organization of the component architecture. Some files
17380 and directories have been moved and/or renamed.
17384 Fixed leaking kacpidpc processes.
17386 Fixed queueing event data even when /proc/acpi/event is not
17389 ASL Compiler, version X2020:
17391 Memory allocation performance enhancement - over 24X compile time
17392 improvement on large ASL files. Parse nodes and namestring
17393 buffers are now allocated from a large internal compiler buffer.
17395 The temporary .SRC file is deleted unless the "-s" option is
17398 The "-d" debug output option now sends all output to the .DBG file
17399 instead of the console.
17401 "External" second parameter is now optional
17403 "ElseIf" syntax now properly allows the predicate
17405 Last operand to "Load" now recognized as a Target operand
17407 Debug object can now be used anywhere as a normal object.
17409 ResourceTemplate now returns an object of type BUFFER
17411 EISAID now returns an object of type INTEGER
17413 "Index" now works with a STRING operand
17415 "LoadTable" now accepts optional parameters
17417 "ToString" length parameter is now optional
17419 "Interrupt (ResourceType," parse error fixed.
17421 "Register" with a user-defined region space parse error fixed
17423 Escaped backslash at the end of a string ("\\") scan/parse error
17426 "Revision" is now an object of type INTEGER.
17430 ------------------------------------------
17431 Summary of changes for this label: 05_02_01
17435 /proc/acpi/event now blocks properly.
17437 Removed /proc/sys/acpi. You can still dump your DSDT from
17440 ACPI CA Core Subsystem:
17442 Fixed a problem introduced in the previous label where some of the
17443 "small" resource descriptor types were not recognized.
17445 Improved error messages for the case where an ASL Field is outside
17446 the range of the parent operation region.
17448 ASL Compiler, version X2018:
17451 Added error detection for ASL Fields that extend beyond the length
17452 of the parent operation region (only if the length of the region
17453 is known at compile time.) This includes fields that have a
17454 minimum access width that is smaller than the parent region, and
17455 individual field units that are partially or entirely beyond the
17456 extent of the parent.
17460 ------------------------------------------
17461 Summary of changes for this label: 04_27_01
17463 ACPI CA Core Subsystem:
17465 Fixed a problem where the namespace mutex could be released at the
17466 wrong time during execution of AcpiRemoveAddressSpaceHandler.
17468 Added optional thread ID output for debug traces, to simplify
17469 debugging of multiple threads. Added context switch notification
17470 when the debug code realizes that a different thread is now
17471 executing ACPI code.
17473 Some additional external data types have been prefixed with the
17474 string "ACPI_" for consistency. This may effect existing code.
17475 The data types affected are the external callback typedefs - e.g.,
17477 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
17481 Fixed an issue with the OSL semaphore implementation where a
17482 thread was waking up with an error from receiving a SIGCHLD
17485 Linux version of ACPI CA now uses the system C library for string
17486 manipulation routines instead of a local implementation.
17488 Cleaned up comments and removed TBDs.
17490 ASL Compiler, version X2017:
17492 Enhanced error detection and reporting for all file I/O
17497 Programmer Reference updated to version 1.06.
17501 ------------------------------------------
17502 Summary of changes for this label: 04_13_01
17504 ACPI CA Core Subsystem:
17506 Restructured support for BufferFields and RegionFields.
17507 BankFields support is now fully operational. All known 32-bit
17508 limitations on field sizes have been removed. Both BufferFields
17509 and (Operation) RegionFields are now supported by the same field
17512 Resource support now supports QWORD address and IO resources. The
17513 16/32/64 bit address structures and the Extended IRQ structure
17514 have been changed to properly handle Source Resource strings.
17516 A ThreadId of -1 is now used to indicate a "mutex not acquired"
17517 condition internally and must never be returned by AcpiOsThreadId.
17518 This reserved value was changed from 0 since Unix systems allow a
17523 Driver code reorganized to enhance portability
17525 Added a kernel configuration option to control ACPI_DEBUG
17527 Fixed the EC driver to honor _GLK.
17529 ASL Compiler, version X2016:
17531 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
17532 address space was set to 0, not 0x7f as it should be.
17534 ------------------------------------------
17535 Summary of changes for this label: 03_13_01
17537 ACPI CA Core Subsystem:
17539 During ACPI initialization, the _SB_._INI method is now run if
17542 Notify handler fix - notifies are deferred until the parent method
17543 completes execution. This fixes the "mutex already acquired"
17544 issue seen occasionally.
17546 Part of the "implicit conversion" rules in ACPI 2.0 have been
17547 found to cause compatibility problems with existing ASL/AML. The
17548 convert "result-to-target-type" implementation has been removed
17549 for stores to method Args and Locals. Source operand conversion
17550 is still fully implemented. Possible changes to ACPI 2.0
17551 specification pending.
17553 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
17556 Fix for compiler warnings for 64-bit compiles.
17560 /proc output aligned for easier parsing.
17562 Release-version compile problem fixed.
17564 New kernel configuration options documented in Configure.help.
17566 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
17571 Power resource driver integrated with bus manager.
17573 Fixed kernel fault during active cooling for thermal zones.
17577 The source code tree has been restructured.
17581 ------------------------------------------
17582 Summary of changes for this label: 03_02_01
17584 Linux OS Services Layer (OSL):
17586 Major revision of all Linux-specific code.
17588 Modularized all ACPI-specific drivers.
17590 Added new thermal zone and power resource drivers.
17592 Revamped /proc interface (new functionality is under /proc/acpi).
17594 New kernel configuration options.
17596 Linux known issues:
17598 New kernel configuration options not documented in Configure.help
17602 Module dependencies not currently implemented. If used, they
17603 should be loaded in this order: busmgr, power, ec, system,
17604 processor, battery, ac_adapter, button, thermal.
17606 Modules will not load if CONFIG_MODVERSION is set.
17608 IBM 600E - entering S5 may reboot instead of shutting down.
17610 IBM 600E - Sleep button may generate "Invalid <NULL> context"
17613 Some systems may fail with "execution mutex already acquired"
17616 ACPI CA Core Subsystem:
17618 Added a new OSL Interface, AcpiOsGetThreadId. This was required
17619 for the deadlock detection code. Defined to return a non-zero, 32-
17620 bit thread ID for the currently executing thread. May be a non-
17621 zero constant integer on single-thread systems.
17623 Implemented deadlock detection for internal subsystem mutexes. We
17624 may add conditional compilation for this code (debug only) later.
17626 ASL/AML Mutex object semantics are now fully supported. This
17627 includes multiple acquires/releases by owner and support for the
17629 Mutex SyncLevel parameter.
17631 A new "Force Release" mechanism automatically frees all ASL
17632 Mutexes that have been acquired but not released when a thread
17633 exits the interpreter. This forces conformance to the ACPI spec
17634 ("All mutexes must be released when an invocation exits") and
17635 prevents deadlocked ASL threads. This mechanism can be expanded
17636 (later) to monitor other resource acquisitions if OEM ASL code
17637 continues to misbehave (which it will).
17639 Several new ACPI exception codes have been added for the Mutex
17642 Recursive method calls are now allowed and supported (the ACPI
17643 spec does in fact allow recursive method calls.) The number of
17644 recursive calls is subject to the restrictions imposed by the
17645 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
17648 Implemented support for the SyncLevel parameter for control
17649 methods (ACPI 2.0 feature)
17651 Fixed a deadlock problem when multiple threads attempted to use
17654 Fixed a problem where the string length of a String package
17655 element was not always set in a package returned from
17656 AcpiEvaluateObject.
17658 Fixed a problem where the length of a String package element was
17659 not always included in the length of the overall package returned
17660 from AcpiEvaluateObject.
17662 Added external interfaces (Acpi*) to the ACPI debug memory
17663 manager. This manager keeps a list of all outstanding
17664 allocations, and can therefore detect memory leaks and attempts to
17665 free memory blocks more than once. Useful for code such as the
17666 power manager, etc. May not be appropriate for device drivers.
17667 Performance with the debug code enabled is slow.
17669 The ACPI Global Lock is now an optional hardware element.
17671 ASL Compiler Version X2015:
17673 Integrated changes to allow the compiler to be generated on
17674 multiple platforms.
17676 Linux makefile added to generate the compiler on Linux
17680 All platform-specific headers have been moved to their own
17681 subdirectory, Include/Platform.
17683 New source file added, Interpreter/ammutex.c
17685 New header file, Include/acstruct.h
17689 The programmer reference has been updated for the following new
17690 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
17692 ------------------------------------------
17693 Summary of changes for this label: 02_08_01
17695 Core ACPI CA Subsystem: Fixed a problem where an error was
17696 incorrectly returned if the return resource buffer was larger than
17697 the actual data (in the resource interfaces).
17699 References to named objects within packages are resolved to the
17701 full pathname string before packages are returned directly (via
17702 the AcpiEvaluateObject interface) or indirectly via the resource
17705 Linux OS Services Layer (OSL):
17707 Improved /proc battery interface.
17710 Added C-state debugging output and other miscellaneous fixes.
17712 ASL Compiler Version X2014:
17714 All defined method arguments can now be used as local variables,
17715 including the ones that are not actually passed in as parameters.
17716 The compiler tracks initialization of the arguments and issues an
17717 exception if they are used without prior assignment (just like
17720 The -o option now specifies a filename prefix that is used for all
17721 output files, including the AML output file. Otherwise, the
17722 default behavior is as follows: 1) the AML goes to the file
17723 specified in the DSDT. 2) all other output files use the input
17724 source filename as the base.
17726 ------------------------------------------
17727 Summary of changes for this label: 01_25_01
17729 Core ACPI CA Subsystem: Restructured the implementation of object
17730 store support within the interpreter. This includes support for
17731 the Store operator as well as any ASL operators that include a
17734 Partially implemented support for Implicit Result-to-Target
17735 conversion. This is when a result object is converted on the fly
17736 to the type of an existing target object. Completion of this
17737 support is pending further analysis of the ACPI specification
17738 concerning this matter.
17740 CPU-specific code has been removed from the subsystem (hardware
17743 New Power Management Timer functions added
17745 Linux OS Services Layer (OSL): Moved system state transition code
17746 to the core, fixed it, and modified Linux OSL accordingly.
17748 Fixed C2 and C3 latency calculations.
17751 We no longer use the compilation date for the version message on
17752 initialization, but retrieve the version from AcpiGetSystemInfo().
17754 Incorporated for fix Sony VAIO machines.
17756 Documentation: The Programmer Reference has been updated and
17760 ASL Compiler: Version X2013: Fixed a problem where the line
17761 numbering and error reporting could get out of sync in the
17762 presence of multiple include files.
17764 ------------------------------------------
17765 Summary of changes for this label: 01_15_01
17767 Core ACPI CA Subsystem:
17769 Implemented support for type conversions in the execution of the
17770 ASL Concatenate operator (The second operand is converted to
17771 match the type of the first operand before concatenation.)
17773 Support for implicit source operand conversion is partially
17774 implemented. The ASL source operand types Integer, Buffer, and
17775 String are freely interchangeable for most ASL operators and are
17776 converted by the interpreter on the fly as required. Implicit
17777 Target operand conversion (where the result is converted to the
17778 target type before storing) is not yet implemented.
17780 Support for 32-bit and 64-bit BCD integers is implemented.
17782 Problem fixed where a field read on an aligned field could cause a
17783 read past the end of the field.
17785 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
17786 does not return a value, but the caller expects one. (The ASL
17787 compiler flags this as a warning.)
17792 1. Static typechecking of all operands is implemented. This
17793 prevents the use of invalid objects (such as using a Package where
17794 an Integer is required) at compile time instead of at interpreter
17796 2. The ASL source line is printed with ALL errors and warnings.
17797 3. Bug fix for source EOF without final linefeed.
17798 4. Debug option is split into a parse trace and a namespace trace.
17799 5. Namespace output option (-n) includes initial values for
17800 integers and strings.
17801 6. Parse-only option added for quick syntax checking.
17802 7. Compiler checks for duplicate ACPI name declarations
17805 1. Relaxed typechecking to allow interchangeability between
17806 strings, integers, and buffers. These types are now converted by
17807 the interpreter at runtime.
17808 2. Compiler reports time taken by each internal subsystem in the
17812 ------------------------------------------
17813 Summary of changes for this label: 12_14_00
17817 This is the first official release of the compiler. Since the
17818 compiler requires elements of the Core Subsystem, this label
17819 synchronizes everything.
17821 ------------------------------------------
17822 Summary of changes for this label: 12_08_00
17825 Fixed a problem where named references within the ASL definition
17826 of both OperationRegions and CreateXXXFields did not work
17827 properly. The symptom was an AE_AML_OPERAND_TYPE during
17828 initialization of the region/field. This is similar (but not
17829 related internally) to the problem that was fixed in the last
17832 Implemented both 32-bit and 64-bit support for the BCD ASL
17833 functions ToBCD and FromBCD.
17835 Updated all legal headers to include "2000" in the copyright
17838 ------------------------------------------
17839 Summary of changes for this label: 12_01_00
17841 Fixed a problem where method invocations within the ASL definition
17842 of both OperationRegions and CreateXXXFields did not work
17843 properly. The symptom was an AE_AML_OPERAND_TYPE during
17844 initialization of the region/field:
17846 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17847 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17850 Fixed a problem where operators with more than one nested
17851 subexpression would fail. The symptoms were varied, by mostly
17852 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17853 problem that has gone unnoticed until now.
17855 Subtract (Add (1,2), Multiply (3,4))
17857 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17858 previous build (The prefix part of a relative path was handled
17861 Fixed a problem where Operation Region initialization failed if
17862 the operation region name was a "namepath" instead of a simple
17863 "nameseg". Symptom was an AE_NO_OPERAND error.
17865 Fixed a problem where an assignment to a local variable via the
17866 indirect RefOf mechanism only worked for the first such
17867 assignment. Subsequent assignments were ignored.
17869 ------------------------------------------
17870 Summary of changes for this label: 11_15_00
17872 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17873 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17874 the AML interpreter does NOT have support for the new 2.0 ASL
17875 grammar terms at this time.
17877 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17880 All physical memory addresses across all platforms are now 64 bits
17881 wide. Logical address width remains dependent on the platform
17884 AcpiOsMapMemory interface changed to a 64-bit physical address.
17886 The AML interpreter integer size is now 64 bits, as per the ACPI
17889 For backwards compatibility with ACPI 1.0, ACPI tables with a
17890 revision number less than 2 use 32-bit integers only.
17892 Fixed a problem where the evaluation of OpRegion operands did not
17893 always resolve them to numbers properly.
17895 ------------------------------------------
17896 Summary of changes for this label: 10_20_00
17898 Fix for CBN_._STA issue. This fix will allow correct access to
17899 CBN_ OpRegions when the _STA returns 0x8.
17901 Support to convert ACPI constants (Ones, Zeros, One) to actual
17902 values before a package object is returned
17904 Fix for method call as predicate to if/while construct causing
17905 incorrect if/while behavior
17907 Fix for Else block package lengths sometimes calculated wrong (if
17910 Fix for Processor object length field, was always zero
17912 Table load abort if FACP sanity check fails
17914 Fix for problem with Scope(name) if name already exists
17916 Warning emitted if a named object referenced cannot be found
17917 (resolved) during method execution.
17923 ------------------------------------------
17924 Summary of changes for this label: 9_29_00
17926 New table initialization interfaces: AcpiInitializeSubsystem no
17927 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17928 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17929 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17932 Note: These interface changes require changes to all existing OSDs
17934 The PCI_Config default address space handler is always installed
17935 at the root namespace object.
17937 -------------------------------------------
17938 Summary of changes for this label: 09_15_00
17940 The new initialization architecture is implemented. New
17941 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17942 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17944 (Namespace is automatically loaded when a table is loaded)
17946 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17947 52 bytes to 32 bytes. There is usually one of these for every
17948 namespace object, so the memory savings is significant.
17950 Implemented just-in-time evaluation of the CreateField operators.
17952 Bug fixes for IA-64 support have been integrated.
17954 Additional code review comments have been implemented
17956 The so-called "third pass parse" has been replaced by a final walk
17957 through the namespace to initialize all operation regions (address
17958 spaces) and fields that have not yet been initialized during the
17959 execution of the various _INI and REG methods.
17961 New file - namespace/nsinit.c
17963 -------------------------------------------
17964 Summary of changes for this label: 09_01_00
17966 Namespace manager data structures have been reworked to change the
17967 primary object from a table to a single object. This has
17968 resulted in dynamic memory savings of 3X within the namespace and
17969 2X overall in the ACPI CA subsystem.
17971 Fixed problem where the call to AcpiEvFindPciRootBuses was
17972 inadvertently left commented out.
17974 Reduced the warning count when generating the source with the GCC
17977 Revision numbers added to each module header showing the
17978 SourceSafe version of the file. Please refer to this version
17979 number when giving us feedback or comments on individual modules.
17981 The main object types within the subsystem have been renamed to
17982 clarify their purpose:
17984 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17985 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17986 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17988 NOTE: no changes to the initialization sequence are included in
17991 -------------------------------------------
17992 Summary of changes for this label: 08_23_00
17994 Fixed problem where TerminateControlMethod was being called
17995 multiple times per method
17997 Fixed debugger problem where single stepping caused a semaphore to
18000 Improved performance through additional parse object caching -
18001 added ACPI_EXTENDED_OP type
18003 -------------------------------------------
18004 Summary of changes for this label: 08_10_00
18006 Parser/Interpreter integration: Eliminated the creation of
18007 complete parse trees for ACPI tables and control methods.
18008 Instead, parse subtrees are created and then deleted as soon as
18009 they are processed (Either entered into the namespace or executed
18010 by the interpreter). This reduces the use of dynamic kernel
18011 memory significantly. (about 10X)
18013 Exception codes broken into classes and renumbered. Be sure to
18014 recompile all code that includes acexcep.h. Hopefully we won't
18015 have to renumber the codes again now that they are split into
18016 classes (environment, programmer, AML code, ACPI table, and
18019 Fixed some additional alignment issues in the Resource Manager
18022 Implemented semaphore tracking in the AcpiExec utility, and fixed
18023 several places where mutexes/semaphores were being unlocked
18024 without a corresponding lock operation. There are no known
18025 semaphore or mutex "leaks" at this time.
18027 Fixed the case where an ASL Return operator is used to return an
18030 -------------------------------------------
18031 Summary of changes for this label: 07_28_00
18033 Fixed a problem with the way addresses were calculated in
18034 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
18035 manifested itself when a Field was created with WordAccess or
18036 DwordAccess, but the field unit defined within the Field was less
18038 than a Word or Dword.
18040 Fixed a problem in AmlDumpOperands() module's loop to pull
18041 operands off of the operand stack to display information. The
18042 problem manifested itself as a TLB error on 64-bit systems when
18043 accessing an operand stack with two or more operands.
18045 Fixed a problem with the PCI configuration space handlers where
18046 context was getting confused between accesses. This required a
18047 change to the generic address space handler and address space
18048 setup definitions. Handlers now get both a global handler context
18049 (this is the one passed in by the user when executing
18050 AcpiInstallAddressSpaceHandler() and a specific region context
18051 that is unique to each region (For example, the _ADR, _SEG and
18052 _BBN values associated with a specific region). The generic
18053 function definitions have changed to the following:
18055 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
18056 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
18057 *HandlerContext, // This used to be void *Context void
18058 *RegionContext); // This is an additional parameter
18060 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
18061 RegionHandle, UINT32 Function, void *HandlerContext, void
18062 **RegionContext); // This used to be **ReturnContext
18064 -------------------------------------------
18065 Summary of changes for this label: 07_21_00
18067 Major file consolidation and rename. All files within the
18068 interpreter have been renamed as well as most header files. This
18069 was done to prevent collisions with existing files in the host
18070 OSs -- filenames such as "config.h" and "global.h" seem to be
18071 quite common. The VC project files have been updated. All
18072 makefiles will require modification.
18074 The parser/interpreter integration continues in Phase 5 with the
18075 implementation of a complete 2-pass parse (the AML is parsed
18076 twice) for each table; This avoids the construction of a huge
18077 parse tree and therefore reduces the amount of dynamic memory
18078 required by the subsystem. Greater use of the parse object cache
18079 means that performance is unaffected.
18081 Many comments from the two code reviews have been rolled in.
18083 The 64-bit alignment support is complete.
18085 -------------------------------------------
18086 Summary of changes for this label: 06_30_00
18088 With a nod and a tip of the hat to the technology of yesteryear,
18089 we've added support in the source code for 80 column output
18090 devices. The code is now mostly constrained to 80 columns or
18091 less to support environments and editors that 1) cannot display
18092 or print more than 80 characters on a single line, and 2) cannot
18093 disable line wrapping.
18095 A major restructuring of the namespace data structure has been
18096 completed. The result is 1) cleaner and more
18097 understandable/maintainable code, and 2) a significant reduction
18098 in the dynamic memory requirement for each named ACPI object
18101 -------------------------------------------
18102 Summary of changes for this label: 06_23_00
18104 Linux support has been added. In order to obtain approval to get
18105 the ACPI CA subsystem into the Linux kernel, we've had to make
18106 quite a few changes to the base subsystem that will affect all
18107 users (all the changes are generic and OS- independent). The
18108 effects of these global changes have been somewhat far reaching.
18109 Files have been merged and/or renamed and interfaces have been
18110 renamed. The major changes are described below.
18112 Osd* interfaces renamed to AcpiOs* to eliminate namespace
18113 pollution/confusion within our target kernels. All OSD
18114 interfaces must be modified to match the new naming convention.
18116 Files merged across the subsystem. A number of the smaller source
18117 and header files have been merged to reduce the file count and
18118 increase the density of the existing files. There are too many
18119 to list here. In general, makefiles that call out individual
18120 files will require rebuilding.
18122 Interpreter files renamed. All interpreter files now have the
18123 prefix am* instead of ie* and is*.
18125 Header files renamed: The acapi.h file is now acpixf.h. The
18126 acpiosd.h file is now acpiosxf.h. We are removing references to
18127 the acronym "API" since it is somewhat windowsy. The new name is
18128 "external interface" or xface or xf in the filenames.j
18131 All manifest constants have been forced to upper case (some were
18132 mixed case.) Also, the string "ACPI_" has been prepended to many
18133 (not all) of the constants, typedefs, and structs.
18135 The globals "DebugLevel" and "DebugLayer" have been renamed
18136 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
18138 All other globals within the subsystem are now prefixed with
18139 "AcpiGbl_" Internal procedures within the subsystem are now
18140 prefixed with "Acpi" (with only a few exceptions). The original
18141 two-letter abbreviation for the subcomponent remains after "Acpi"
18142 - for example, CmCallocate became AcpiCmCallocate.
18144 Added a source code translation/conversion utility. Used to
18145 generate the Linux source code, it can be modified to generate
18146 other types of source as well. Can also be used to cleanup
18147 existing source by removing extraneous spaces and blank lines.
18148 Found in tools/acpisrc/*
18150 OsdUnMapMemory was renamed to OsdUnmapMemory and then
18151 AcpiOsUnmapMemory. (UnMap became Unmap).
18153 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
18154 When set to one, this indicates that the caller wants to use the
18156 semaphore as a mutex, not a counting semaphore. ACPI CA uses
18157 both types. However, implementers of this call may want to use
18158 different OS primitives depending on the type of semaphore
18159 requested. For example, some operating systems provide separate
18161 "mutex" and "semaphore" interfaces - where the mutex interface is
18162 much faster because it doesn't have all the overhead of a full
18163 semaphore implementation.
18165 Fixed a deadlock problem where a method that accesses the PCI
18166 address space can block forever if it is the first access to the
18169 -------------------------------------------
18170 Summary of changes for this label: 06_02_00
18172 Support for environments that cannot handle unaligned data
18173 accesses (e.g. firmware and OS environments devoid of alignment
18174 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
18175 been added (via configurable macros) in these three areas: -
18176 Transfer of data from the raw AML byte stream is done via byte
18177 moves instead of word/dword/qword moves. - External objects are
18178 aligned within the user buffer, including package elements (sub-
18179 objects). - Conversion of name strings to UINT32 Acpi Names is now
18182 The Store operator was modified to mimic Microsoft's
18183 implementation when storing to a Buffer Field.
18185 Added a check of the BM_STS bit before entering C3.
18187 The methods subdirectory has been obsoleted and removed. A new
18188 file, cmeval.c subsumes the functionality.
18190 A 16-bit (DOS) version of AcpiExec has been developed. The
18191 makefile is under the acpiexec directory.