1 ----------------------------------------
2 29 June 2018. Summary of changes for version 20180629:
5 1) iASL Compiler/Disassembler and Tools:
7 iASL: Fixed a regression related to the use of the ASL External
8 statement. Error checking for the use of the External() statement has
9 been relaxed. Previously, a restriction on the use of External meant that
10 the referenced named object was required to be defined in a different
11 table (an SSDT). Thus it would be an error to declare an object as an
12 external and then define the same named object in the same table. For
17 Device (DEV1){...} // This was an error
19 However, this behavior has caused regressions in some existing ASL code,
20 because there is code that depends on named objects and externals (with
21 the same name) being declared in the same table. This change will allow
22 the ASL code above to compile without errors or warnings.
24 iASL: Implemented ASL language extensions for four operators to make some
25 of their arguments optional instead of required:
26 1) Field (RegionName, AccessType, LockRule, UpdateRule)
27 2) BankField (RegionName, BankName, BankValue,
28 AccessType, LockRule, UpdateRule)
29 3) IndexField (IndexName, DataName,
30 AccessType, LockRule, UpdateRule)
31 For the Field operators above, the AccessType, LockRule, and UpdateRule
32 are now optional arguments. The default values are:
36 4) Mutex (MutexName, SyncLevel)
37 For this operator, the SyncLevel argument is now optional. This argument
38 is rarely used in any meaningful way by ASL code, and thus it makes sense
39 to make it optional. The default value is:
42 iASL: Attempted use of the ASL Unload() operator now results in the
44 "Unload is not supported by all operating systems"
45 This is in fact very true, and the Unload operator may be completely
46 deprecated in the near future.
48 AcpiExec: Fixed a regression for the -fi option (Namespace initialization
49 file. Recent changes in the ACPICA module-level code support altered the
50 table load/initialization sequence . This means that the table load has
51 become a large method execution of the table itself. If Operation Region
52 Fields are used within any module-level code and the -fi option was
53 specified, the initialization values were populated only after the table
54 had completely finished loading (and thus the module-level code had
55 already been executed). This change moves the initialization of objects
56 listed in the initialization file to before the table is executed as a
57 method. Field unit values are now initialized before the table execution
60 ----------------------------------------
61 31 May 2018. Summary of changes for version 20180531:
64 1) ACPICA kernel-resident Subsystem:
66 Implemented additional support to help ensure that a DSDT or SSDT is
67 fully loaded even if errors are incurred during the load. The majority of
68 the problems that are seen is the failure of individual AML operators
69 that occur during execution of any module-level code (MLC) existing in
70 the table. This support adds a mechanism to abort the current ASL
71 statement (AML opcode), emit an error message, and to simply move on to
72 the next opcode -- instead of aborting the entire table load. This is
73 different than the execution of a control method where the entire method
74 is aborted upon any error. The goal is to perform a very "best effort" to
75 load the ACPI tables. The most common MLC errors that have been seen in
76 the field are direct references to unresolved ASL/AML symbols (referenced
77 directly without the use of the CondRefOf operator to validate the
78 symbol). This new ACPICA behavior is now compatible with other ACPI
81 Interpreter: The Unload AML operator is no longer supported for the
82 reasons below. An AE_NOT_IMPLEMENTED exception is returned.
83 1) A correct implementation on at least some hosts may not be possible.
84 2) Other ACPI implementations do not correctly/fully support it.
85 3) It requires host device driver support which is not known to exist.
86 (To properly support namespace unload out from underneath.)
87 4) This AML operator has never been seen in the field.
89 Parser: Added a debug option to dump AML parse sub-trees as they are
90 being executed. Used with ACPI_DEBUG_PRINT, the enabling debug level is
93 Debugger: Reduced the verbosity for errors incurred during table load and
94 module-level code execution.
96 Completed an investigation into adding a namespace node "owner list"
97 instead of the current "owner ID" associated with namespace nodes. This
98 list would link together all nodes that are owned by an individual
99 control method. The purpose would be to enhance control method execution
100 by speeding up cleanup during method exit (all namespace nodes created by
101 a method are deleted upon method termination.) Currently, the entire
102 namespace must be searched for matching owner IDs if (and only if) the
103 method creates named objects outside of the local scope. However, by far
104 the most common case is that methods create objects locally, not outside
105 the method scope. There is already an ACPICA optimization in place that
106 only searches the entire namespace in the rare case of a method creating
107 objects elsewhere in the namespace. Therefore, it is felt that the
108 overhead of adding an additional pointer to each namespace node to
109 implement the owner list makes this feature unnecessary.
112 2) iASL Compiler/Disassembler and Tools:
114 iASL, Disassembler, and Template generator: Implemented support for
115 Revision D of the IORT table. Adds a new subtable that is used to specify
116 SMMUv3 PMCGs. rmurphy-arm.
118 Disassembler: Restored correct table header validation for the "special"
119 ACPI tables -- RSDP and FACS. These tables do not contain a standard ACPI
120 table header and must be special-cased. This was a regression that has
121 been present for apparently a long time.
123 AcpiExec: Reduced verbosity of the local exception handler implemented
124 within acpiexec. This handler is invoked by ACPICA upon any exceptions
125 generated during control method execution. A new option was added: -vh
126 restores the original verbosity level if desired.
128 AcpiExec: Changed the default base from decimal to hex for the -x option
129 (set debug level). This simplifies the use of this option and matches the
130 behavior of the corresponding iASL -x option.
132 AcpiExec: Restored a force-exit on multiple control-c (sigint)
133 interrupts. This allows program termination even if other issues cause
134 the control-c to fail.
136 ASL test suite (ASLTS): Added tests for the recently implemented package
137 element resolution mechanism that allows forward references to named
138 objects from individual package elements (this mechanism provides
139 compatibility with other ACPI implementations.)
142 ----------------------------------------
143 8 May 2018. Summary of changes for version 20180508:
146 1) ACPICA kernel-resident subsystem:
148 Completed the new (recently deployed) package resolution mechanism for
149 the Load and LoadTable ASL/AML operators. This fixes a regression that
150 was introduced in version 20180209 that could result in an
151 AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table
152 (SSDT) that contains package objects.
155 2) iASL Compiler/Disassembler and Tools:
157 AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than
158 1 MB. This change allows for table offsets within the acpidump file to be
159 up to 8 characters. These changes are backwards compatible with existing
163 ----------------------------------------
164 27 April 2018. Summary of changes for version 20180427:
167 1) ACPICA kernel-resident subsystem:
169 Debugger: Added support for Package objects in the "Test Objects"
170 command. This command walks the entire namespace and evaluates all named
171 data objects (Integers, Strings, Buffers, and now Packages).
173 Improved error messages for the namespace root node. Originally, the root
174 was referred to by the confusing string "\___". This has been replaced by
175 "Namespace Root" for clarification.
177 Fixed a potential infinite loop in the AcpiRsDumpByteList function. Colin
178 Ian King <colin.king@canonical.com>.
181 2) iASL Compiler/Disassembler and Tools:
183 iASL: Implemented support to detect and flag illegal forward references.
184 For compatibility with other ACPI implementations, these references are
185 now illegal at the root level of the DSDT or SSDTs. Forward references
186 have always been illegal within control methods. This change should not
187 affect existing ASL/AML code because of the fact that these references
188 have always been illegal in the other ACPI implementation.
190 iASL: Added error messages for the case where a table OEM ID and OEM
191 TABLE ID strings are longer than the ACPI-defined length. Previously,
192 these strings were simply silently truncated.
194 iASL: Enhanced the -tc option (which creates an AML hex file in C,
195 suitable for import into a firmware project):
196 1) Create a unique name for the table, to simplify use of multiple
198 2) Add a protection #ifdef in the file, similar to a .h header file.
199 With assistance from Sami Mujawar, sami.mujawar@arm.com and Evan Lloyd,
202 AcpiExec: Added a new option, -df, to disable the local fault handler.
203 This is useful during debugging, where it may be desired to drop into a
206 ----------------------------------------
207 13 March 2018. Summary of changes for version 20180313:
210 1) ACPICA kernel-resident subsystem:
212 Implemented various improvements to the GPE support:
214 1) Dispatch all active GPEs at initialization time so that no GPEs are
216 2) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled
217 before devices are enumerated.
218 3) Don't unconditionally clear ACPI IRQs during suspend/resume, so that
220 4) Add parallel GPE handling to eliminate the possibility of dispatching
222 5) Dispatch any pending GPEs after enabling for the first time.
224 AcpiGetObjectInfo - removed support for the _STA method. This was causing
225 problems on some platforms.
227 Added a new _OSI string, "Windows 2017.2".
229 Cleaned up and simplified the module-level code support. These changes
230 are in preparation for the eventual removal of the legacy MLC support
231 (deferred execution), replaced by the new MLC architecture which executes
232 the MLC as a table is loaded (DSDT/SSDTs).
234 Changed a compile-time option to a runtime option. Changes the option to
235 ignore ACPI table load-time package resolution errors into a runtime
236 option. Used only for platforms that generate many AE_NOT_FOUND errors
237 during boot. AcpiGbl_IgnorePackageResolutionErrors.
239 Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some
240 ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid
241 compilation errors from unused variables (seen with some compilers).
244 2) iASL Compiler/Disassembler and Tools:
246 ASLTS: parallelized execution in order to achieve an (approximately) 2X
247 performance increase.
249 ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves
252 ----------------------------------------
253 09 February 2018. Summary of changes for version 20180209:
256 1) ACPICA kernel-resident subsystem:
258 Completed the final integration of the recent changes to Package Object
259 handling and the module-level AML code support. This allows forward
260 references from individual package elements when the package object is
261 declared from within module-level code blocks. Provides compatibility
262 with other ACPI implementations.
264 The new architecture for the AML module-level code has been completed and
265 is now the default for the ACPICA code. This new architecture executes
266 the module-level code in-line as the ACPI table is loaded/parsed instead
267 of the previous architecture which deferred this code until after the
268 table was fully loaded. This solves some ASL code ordering issues and
269 provides compatibility with other ACPI implementations. At this time,
270 there is an option to fallback to the earlier architecture, but this
271 support is deprecated and is planned to be completely removed later this
274 Added a compile-time option to ignore AE_NOT_FOUND exceptions during
275 resolution of named reference elements within Package objects. Although
276 this is potentially a serious problem, it can generate a lot of
277 noise/errors on platforms whose firmware carries around a bunch of unused
278 Package objects. To disable these errors, define
279 ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All
280 errors are always reported for ACPICA applications such as AcpiExec.
282 Fixed a regression related to the explicit type-conversion AML operators
283 (ToXXXX). The regression was introduced early in 2017 but was not seen
284 until recently because these operators are not fully supported by other
285 ACPI implementations and are thus rarely used by firmware developers. The
286 operators are defined by the ACPI specification to not implement the
287 "implicit result object conversion". The regression incorrectly
288 introduced this object conversion for the following explicit conversion
299 2) iASL Compiler/Disassembler and Tools:
301 iASL: Fixed a problem with the compiler constant folding feature as
302 related to the ToXXXX explicit conversion operators. These operators do
303 not support the "implicit result object conversion" by definition. Thus,
304 ASL expressions that use these operators cannot be folded to a simple
305 Store operator because Store implements the implicit conversion. This
306 change uses the CopyObject operator for the ToXXXX operator folding
307 instead. CopyObject is defined to not implement implicit result
308 conversions and is thus appropriate for folding the ToXXXX operators.
310 iASL: Changed the severity of an error condition to a simple warning for
311 the case where a symbol is declared both locally and as an external
312 symbol. This accommodates existing ASL code.
314 AcpiExec: The -ep option to enable the new architecture for module-level
315 code has been removed. It is replaced by the -dp option which instead has
316 the opposite effect: it disables the new architecture (the default) and
317 enables the legacy architecture. When the legacy code is removed in the
318 future, the -dp option will be removed also.
320 ----------------------------------------
321 05 January 2018. Summary of changes for version 20180105:
324 1) ACPICA kernel-resident subsystem:
326 Updated all copyrights to 2018. This affects all source code modules.
328 Fixed a possible build error caused by an unresolved reference to the
329 AcpiUtSafeStrncpy function.
331 Removed NULL pointer arithmetic in the various pointer manipulation
332 macros. All "(void *) NULL" constructs are converted to "(void *) 0".
333 This eliminates warnings/errors in newer C compilers. Jung-uk Kim.
335 Added support for A32 ABI compilation, which uses the ILP32 model. Anuj
339 2) iASL Compiler/Disassembler and Tools:
341 ASLTS: Updated all copyrights to 2018.
343 Tools: Updated all signon copyrights to 2018.
345 AcpiXtract: Fixed a regression related to ACPI table signatures where the
346 signature was truncated to 3 characters (instead of 4).
348 AcpiExec: Restore the original terminal mode after the use of the -v and
351 ASLTS: Deployed the iASL __METHOD__ macro across the test suite.
353 ----------------------------------------
354 14 December 2017. Summary of changes for version 20171214:
357 1) ACPICA kernel-resident subsystem:
359 Fixed a regression in the external (public) AcpiEvaluateObjectTyped
360 interface where the optional "pathname" argument had inadvertently become
361 a required argument returning an error if omitted (NULL pointer
364 Fixed two possible memory leaks related to the recently developed "late
365 resolution" of reference objects within ASL Package Object definitions.
367 Added two recently defined _OSI strings: "Windows 2016" and "Windows
368 2017". Mario Limonciello.
370 Implemented and deployed a safer version of the C library function
371 strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the
372 creation of unterminated strings as a possible result of a standard
375 Cleaned up and restructured the global variable file (acglobal.h). There
376 are many changes, but no functional changes.
379 2) iASL Compiler/Disassembler and Tools:
381 iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the
382 optional OemData field at the end of the table was incorrectly required
383 for proper compilation. It is now correctly an optional field.
385 ASLTS: The entire suite was converted from standard ASL to the ASL+
386 language, using the ASL-to-ASL+ converter which is integrated into the
387 iASL compiler. A binary compare of all output files has verified the
388 correctness of the conversion.
390 iASL: Fixed the source code build for platforms where "char" is unsigned.
391 This affected the iASL lexer only. Jung-uk Kim.
393 ----------------------------------------
394 10 November 2017. Summary of changes for version 20171110:
397 1) ACPICA kernel-resident subsystem:
399 This release implements full support for ACPI 6.2A:
400 NFIT - Added a new subtable, "Platform Capabilities Structure"
401 No other changes to ACPICA were required, since ACPI 6.2A is primarily an
402 errata release of the specification.
404 Other ACPI table changes:
405 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo
406 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy
409 Utilities: Modified the string/integer conversion functions to use
410 internal 64-bit divide support instead of a native divide. On 32-bit
411 platforms, a 64-bit divide typically requires a library function which
412 may not be present in the build (kernel or otherwise).
414 Implemented a targeted error message for timeouts returned from the
415 Embedded Controller device driver. This is seen frequently enough to
416 special-case an AE_TIME returned from an EC operation region access:
417 "Timeout from EC hardware or EC device driver"
419 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all
420 runtime error messages have the identical prefix.
423 2) iASL Compiler/Disassembler and Tools:
425 AcpiXtract: Fixed a problem with table header detection within the
426 acpidump file. Processing a table could be ended early if a 0x40 (@)
427 appears in the original binary table, resulting in the @ symbol appearing
428 in the decoded ASCII field at the end of the acpidump text line. The
429 symbol caused acpixtract to incorrectly think it had reached the end of
430 the current table and the beginning of a new table.
432 AcpiXtract: Added an option (-f) to ignore some errors during table
433 extraction. This initial implementation ignores non-ASCII and non-
434 printable characters found in the acpidump text file.
436 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics
437 for ASLTS. This feature is used to track memory allocations from
438 different memory caches within the ACPICA code. At the end of an ASLTS
439 run, these memory statistics are recorded and stored in a log file.
441 Debugger (user-space version): Implemented a simple "Background" command.
442 Creates a new thread to execute a control method in the background, while
443 control returns to the debugger prompt to allow additional commands.
444 Syntax: Background <Namepath> [Arguments]
446 ----------------------------------------
447 29 September 2017. Summary of changes for version 20170929:
450 1) ACPICA kernel-resident subsystem:
452 Redesigned and implemented an improved ASL While() loop timeout
453 mechanism. This mechanism is used to prevent infinite loops in the kernel
454 AML interpreter caused by either non-responsive hardware or incorrect AML
455 code. The new implementation uses AcpiOsGetTimer instead of a simple
456 maximum loop count, and is thus more accurate and constant across
457 different machines. The default timeout is currently 30 seconds, but this
458 may be adjusted later.
460 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to
461 better reflect the new implementation of the loop timeout mechanism.
463 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support
464 and to fix an off-by-one error. Jung-uk Kim.
466 Fixed an EFI build problem by updating the makefiles to for a new file
467 that was added, utstrsuppt.c
470 2) iASL Compiler/Disassembler and Tools:
472 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This
473 includes support in the table disassembler, compiler, and template
476 iASL: Added an exception for an illegal type of recursive method
477 invocation. If a method creates named objects, the first recursive call
478 will fail at runtime. This change adds an error detection at compile time
479 to catch the problem up front. Note: Marking such a method as
480 "serialized" will not help with this problem, because the same thread can
481 acquire the method mutex more than once. Example compiler and runtime
491 Error 6152 - ^ Illegal recursive call to method
492 that creates named objects (MTH1)
494 Previous runtime exception:
495 ACPI Error: [INT1] Namespace lookup failure,
496 AE_ALREADY_EXISTS (20170831/dswload2-465)
498 iASL: Updated support for External() opcodes to improve namespace
499 management and error detection. These changes are related to issues seen
500 with multiple-segment namespace pathnames within External declarations,
503 External(\_SB.PCI0.GFX0, DeviceObj)
504 External(\_SB.PCI0.GFX0.ALSI)
506 iASL: Implemented support for multi-line error/warning messages. This
507 enables more detailed and helpful error messages as below, from the
508 initial deployment for the duplicate names error:
510 DSDT.iiii 1692: Device(PEG2) {
511 Error 6074 - ^ Name already exists in scope
514 Original name creation/declaration below:
515 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj)
517 AcpiXtract: Added additional flexibility to support differing input hex
518 dump formats. Specifically, hex dumps that contain partial disassembly
519 and/or comments within the ACPI table data definition. There exist some
520 dump utilities seen in the field that create this type of hex dump (such
521 as Simics). For example:
523 DSDT @ 0xdfffd0c0 (10999 bytes)
531 Creator_id 1280593481
532 Creator_revision 537399345
533 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00
535 2af0: 5f 4c 30 46 00 a4 01
537 Test suite: Miscellaneous changes/fixes:
538 More cleanup and simplification of makefiles
539 Continue compilation of test cases after a compile failure
540 Do not perform binary compare unless both files actually exist
542 iASL: Performed some code/module restructuring. Moved all memory
543 allocation functions to new modules. Two new files, aslallocate.c and
546 ----------------------------------------
547 31 August 2017. Summary of changes for version 20170831:
550 1) ACPICA kernel-resident subsystem:
552 Implemented internal support for full 64-bit addresses that appear in all
553 Generic Address Structure (GAS) structures. Previously, only the lower 32
554 bits were used. Affects the use of GAS structures in the FADT and other
555 tables, as well as the GAS structures passed to the AcpiRead and
556 AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
558 Added header support for the PDTT ACPI table (Processor Debug Trigger
559 Table). Full support in the iASL Data Table Compiler and disassembler is
563 2) iASL Compiler/Disassembler and Tools:
565 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
566 Properties Topology Table) where a flag bit was specified in the wrong
567 bit position ("Line Size Valid", bit 6).
569 iASL: Implemented support for Octal integer constants as defined by the
570 ASL language grammar, per the ACPI specification. Any integer constant
571 that starts with a zero is an octal constant. For example,
572 Store (037777, Local0) /* Octal constant */
573 Store (0x3FFF, Local0) /* Hex equivalent */
574 Store (16383, Local0) /* Decimal equivalent */
576 iASL: Improved overflow detection for 64-bit string conversions during
577 compilation of integer constants. "Overflow" in this case means a string
578 that represents an integer that is too large to fit into a 64-bit value.
579 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
580 the low-order 32 bits with a warning, as previously implemented. Several
581 new exceptions are defined that indicate a 64-bit overflow, as well as
582 the base (radix) that was used during the attempted conversion. Examples:
583 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
584 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
585 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
587 iASL: Added a warning for the case where a ResourceTemplate is declared
588 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
589 this case, the resulting template is created with a single END_TAG
590 descriptor, which is essentially useless.
592 iASL: Expanded the -vw option (ignore specific warnings/remarks) to
593 include compilation error codes as well.
595 ----------------------------------------
596 28 July 2017. Summary of changes for version 20170728:
599 1) ACPICA kernel-resident subsystem:
601 Fixed a regression seen with small resource descriptors that could cause
602 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
604 AML interpreter: Implemented a new feature that allows forward references
605 from individual named references within package objects that are
606 contained within blocks of "module-level code". This provides
607 compatibility with other ACPI implementations and supports existing
608 firmware that depends on this feature. Example:
611 If (ABCD) /* An If() at module-level */
613 Name (PKG1, Package()
615 INT1 /* Forward reference to object INT1
621 AML Interpreter: Fixed a problem with the Alias() operator where aliases
622 to some ASL objects were not handled properly. Objects affected are:
623 Mutex, Event, and OperationRegion.
625 AML Debugger: Enhanced to properly handle AML Alias objects. These
626 objects have one level of indirection which was not fully supported by
629 Table Manager: Added support to detect and ignore duplicate SSDTs within
630 the XSDT/RSDT. This error in the XSDT has been seen in the field.
632 EFI and EDK2 support:
633 Enabled /WX flag for MSVC builds
634 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
635 Added local support for 64-bit multiply and shift operations
636 Added support to compile acpidump.efi on Windows
637 Added OSL function stubs for interfaces not used under EFI
639 Added additional support for the _DMA predefined name. _DMA returns a
640 buffer containing a resource template. This change add support within the
641 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
642 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
645 2) iASL Compiler/Disassembler and Tools:
647 iASL: Fixed a problem where the internal input line buffer(s) could
648 overflow if there are very long lines in the input ASL source code file.
649 Implemented buffer management that automatically increases the size of
650 the buffers as necessary.
652 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
653 errors. If the specified exception is not raised during compilation, the
654 compiler emits an error. This is intended to support the ASL test suite,
655 but may be useful in other contexts.
657 iASL: Implemented a new predefined macro, __METHOD__, which returns a
658 string containing the name of the current control method that is being
661 iASL: Implemented debugger and table compiler support for the SDEI ACPI
662 table (Software Delegated Exception Interface). James Morse
663 <james.morse@arm.com>
665 Unix/Linux makefiles: Added an option to disable compile optimizations.
666 The disable occurs when the NOOPT flag is set to TRUE.
667 theracermaster@gmail.com
669 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
670 when there are different tables for 32-bit versus 64-bit.
672 Enhanced error reporting for the ASL test suite (ASLTS) by removing
673 unnecessary/verbose text, and emit the actual line number where an error
674 has occurred. These changes are intended to improve the usefulness of the
677 ----------------------------------------
678 29 June 2017. Summary of changes for version 20170629:
681 1) ACPICA kernel-resident subsystem:
683 Tables: Implemented a deferred ACPI table verification. This is useful
684 for operating systems where the tables cannot be verified in the early
685 initialization stage due to early memory mapping limitations on some
686 architectures. Lv Zheng.
688 Tables: Removed the signature validation for dynamically loaded tables.
689 Provides compatibility with other ACPI implementations. Previously, only
690 SSDT tables were allowed, as per the ACPI specification. Now, any table
691 signature can be used via the Load() operator. Lv Zheng.
693 Tables: Fixed several mutex issues that could cause errors during table
694 acquisition. Lv Zheng.
696 Tables: Fixed a problem where an ACPI warning could be generated if a
697 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
699 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
700 AcpiPutTable interfaces. This applies to the "late stage" table loading
701 when the use of AcpiPutTable is no longer required (since the system
702 memory manager is fully running and available). Lv Zheng.
704 Fixed/Reverted a regression during processing of resource descriptors
705 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
706 exception in this case.
708 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
709 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
711 Interpreter: Fixed a possible fault if an Alias operator with an invalid
712 or duplicate target is encountered during Alias creation in
713 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
715 Added an option to use designated initializers for function pointers.
716 Kees Cook <keescook@google.com>
719 2) iASL Compiler/Disassembler and Tools:
721 iASL: Allow compilation of External declarations with target pathnames
722 that refer to existing named objects within the table. Erik Schmauss.
724 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
725 FieldUnit name also is declared via External in the same table. Erik
728 iASL: Allow existing scope names within pathnames used in External
729 statements. For example:
730 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
733 iASL: IORT ACPI table: Implemented changes required to decode the new
734 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
735 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
737 Disassembler: Don't abort disassembly on errors from External()
738 statements. Erik Schmauss.
740 Disassembler: fixed a possible fault when one of the Create*Field
741 operators references a Resource Template. ACPICA Bugzilla 1396.
743 iASL: In the source code, resolved some naming inconsistences across the
744 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
745 Adds a new file, aslparseop.c
747 ----------------------------------------
748 31 May 2017. Summary of changes for version 20170531:
753 The ACPI specification version 6.2 has been released and is available at
754 http://uefi.org/specifications
756 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
757 are summarized below.
759 New ACPI tables (Table Compiler/Disassembler/Templates):
760 HMAT (Heterogeneous Memory Attributes Table)
761 WSMT (Windows SMM Security Mitigation Table)
762 PPTT (Processor Properties Topology Table)
764 New subtables for existing ACPI tables:
765 HEST (New subtable, Arch-deferred machine check)
766 SRAT (New subtable, Arch-specific affinity structure)
767 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
769 Simple updates for existing ACPI tables:
770 BGRT (two new flag bits)
771 HEST (New bit defined for several subtables, GHES_ASSIST)
773 New Resource Descriptors and Resource macros (Compiler/Disassembler):
779 New type for hardware error notification (section 18.3.2.9)
781 New predefined names/methods (Compiler/Interpreter):
782 _HMA (Heterogeneous Memory Attributes)
783 _LSI (Label Storage Information)
784 _LSR (Label Storage Read)
785 _LSW (Label Storage Write)
787 ASL grammar/macro changes (Compiler):
788 For() ASL macro, implemented with the AML while operator
789 Extensions to Concatenate operator
790 Support for multiple definition blocks in same ASL file
791 Clarification for Buffer operator
792 Allow executable AML code underneath all scopes (Devices, etc.)
793 Clarification/change for the _OSI return value
794 ASL grammar update for reference operators
795 Allow a zero-length string for AML filename in DefinitionBlock
798 New device object notification value
799 Remove a notify value (0x0C) for graceful shutdown
800 New UUIDs for processor/cache properties and
801 physical package property
802 New _HID, ACPI0014 (Wireless Power Calibration Device)
805 1) ACPICA kernel-resident subsystem:
807 Added support to disable ACPI events on hardware-reduced platforms.
808 Eliminates error messages of the form "Could not enable fixed event". Lv
811 Fixed a problem using Device/Thermal objects with the ObjectType and
812 DerefOf ASL operators. This support had not been fully/properly
815 Fixed a problem where if a Buffer object containing a resource template
816 was longer than the actual resource template, an error was generated --
817 even though the AML is legal. This case has been seen in the field.
819 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
820 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
822 Added header file changes for the TPM2 ACPI table. Update to new version
823 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
825 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
826 These interfaces are intended to be used only in conjunction with the
827 predefined _DLM method (Device Lock Method). "This object appears in a
828 device scope when AML access to the device must be synchronized with the
831 Example Code and Data Size: These are the sizes for the OS-independent
832 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
833 debug version of the code includes the debug output trace mechanism and
834 has a much larger code and data size.
837 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
838 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
840 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
841 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
844 2) iASL Compiler/Disassembler and Tools:
846 iASL: Fixed a problem where an External() declaration could not refer to
847 a Field Unit. Erik Schmauss.
849 Disassembler: Improved support for the Switch/Case operators. This
850 feature will disassemble AML code back to the original Switch operators
851 when possible, instead of an If..Else sequence. David Box
853 iASL and disassembler: Improved the handling of multiple extraneous
854 parentheses for both ASL input and disassembled ASL output.
856 Improved the behavior of the iASL compiler and disassembler to detect
857 improper use of external declarations
859 Disassembler: Now aborts immediately upon detection of an unknown AML
860 opcode. The AML parser has no real way to recover from this, and can
861 result in the creation of an ill-formed parse tree that causes errors
862 later during the disassembly.
864 All tools: Fixed a problem where the Unix application OSL did not handle
865 control-c correctly. For example, a control-c could incorrectly wake the
868 AcpiExec: Improved the Control-C handling and added a handler for
869 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
872 Reduced the verbosity of the generic unix makefiles. Previously, each
873 compilation displayed the full set of compiler options. This has been
874 eliminated as the options are easily inspected within the makefiles. Each
875 compilation now results in a single line of output.
877 ----------------------------------------
878 03 March 2017. Summary of changes for version 20170303:
883 The licensing information at the start of each source code module has
884 been updated. In addition to the Intel license, the dual GPLv2/BSD
885 license has been added for completeness. Now, a single version of the
886 source code should be suitable for all ACPICA customers. This is the
887 major change for this release since it affects all source code modules.
890 1) ACPICA kernel-resident subsystem:
892 Fixed two issues with the common asltypes.h header that could cause
893 problems in some environments: (Kim Jung-uk)
894 Removed typedef for YY_BUFFER_STATE ?
895 Fixes an error with earlier versions of Flex.
896 Removed use of FILE typedef (which is only defined in stdio.h)
899 2) iASL Compiler/Disassembler and Tools:
901 Disassembler: fixed a regression introduced in 20170224. A fix for a
902 memory leak related to resource descriptor tags (names) could fault when
903 the disassembler was generated with 64-bit compilers.
905 The ASLTS test suite has been updated to implement a new testing
906 architecture. During generation of the suite from ASL source, both the
907 ASL and ASL+ compilers are now validated, as well as the disassembler
908 itself (Erik Schmauss). The architecture executes as follows:
910 For every ASL source module:
911 Compile (legacy ASL compilation)
912 Disassemble the resulting AML to ASL+ source code
913 Compile the new ASL+ module
914 Perform a binary compare on the legacy AML and the new ASL+ AML
915 The ASLTS suite then executes normally using the AML binaries.
917 ----------------------------------------
918 24 February 2017. Summary of changes for version 20170224:
921 1) ACPICA kernel-resident subsystem:
923 Interpreter: Fixed two issues with the control method return value auto-
924 repair feature, where an attempt to double-delete an internal object
925 could result in an ACPICA warning (for _CID repair and others). No fault
926 occurs, however, because the attempted deletion (actually a release to an
927 internal cache) is detected and ignored via object poisoning.
929 Debugger: Fixed an AML interpreter mutex issue during the single stepping
930 of control methods. If certain debugger commands are executed during
931 stepping, a mutex aquire/release error could occur. Lv Zheng.
933 Fixed some issues generating ACPICA with the Intel C compiler by
934 restoring the original behavior and compiler-specific include file in
937 Example Code and Data Size: These are the sizes for the OS-independent
938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
939 debug version of the code includes the debug output trace mechanism and
940 has a much larger code and data size.
943 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
944 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
946 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
947 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
950 2) iASL Compiler/Disassembler and Tools:
952 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
953 tool has been designed, implemented, and included in this release. The
954 key feature of this utility is that the original comments within the
955 input ASL file are preserved during the conversion process, and included
956 within the converted ASL+ file -- thus creating a transparent conversion
957 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
959 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
962 iASL/Disassembler: Improved the detection and correct disassembly of
963 Switch/Case operators. This feature detects sequences of if/elseif/else
964 operators that originated from ASL Switch/Case/Default operators and
965 emits the original operators. David Box.
967 iASL: Improved the IORT ACPI table support in the following areas. Lv
969 Clear MappingOffset if the MappingCount is zero.
970 Fix the disassembly of the SMMU GSU interrupt offset.
971 Update the template file for the IORT table.
973 Disassembler: Enhanced the detection and disassembly of resource
974 template/descriptor within a Buffer object. An EndTag descriptor is now
975 required to have a zero second byte, since all known ASL compilers emit
976 this. This helps eliminate incorrect decisions when a buffer is
977 disassembled (false positives on resource templates).
979 ----------------------------------------
980 19 January 2017. Summary of changes for version 20170119:
983 1) General ACPICA software:
985 Entire source code base: Added the 2017 copyright to all source code
986 legal/licensing module headers and utility/tool signons. This includes
987 the standard Linux dual-license header. This affects virtually every file
988 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
989 the ACPICA test suite.
992 2) iASL Compiler/Disassembler and Tools:
994 iASL: Removed/fixed an inadvertent remark when a method argument
995 containing a reference is used as a target operand within the method (and
996 never used as a simple argument), as in the example below. Jeffrey Hugo.
998 dsdt.asl 1507: Store(0x1, Arg0)
999 Remark 2146 - ^ Method Argument is never used (Arg0)
1001 All tools: Removed the bit width of the compiler that generated the tool
1002 from the common signon for all user space tools. This proved to be
1003 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
1004 from the generic makefiles (Thomas Petazzoni). Example below.
1007 ASL+ Optimizing Compiler version 20170119-32
1008 ASL+ Optimizing Compiler version 20170119-64
1011 ASL+ Optimizing Compiler version 20170119
1013 ----------------------------------------
1014 22 December 2016. Summary of changes for version 20161222:
1017 1) ACPICA kernel-resident subsystem:
1019 AML Debugger: Implemented a new mechanism to simplify and enhance
1020 debugger integration into all environments, including kernel debuggers
1021 and user-space utilities, as well as remote debug services. This
1022 mechanism essentially consists of new OSL interfaces to support debugger
1023 initialization/termination, as well as wait/notify interfaces to perform
1024 the debugger handshake with the host. Lv Zheng.
1027 AcpiOsInitializeDebugger (void)
1028 AcpiOsTerminateDebugger (void)
1029 AcpiOsWaitCommandReady (void)
1030 AcpiOsNotifyCommandComplete (void)
1032 New OS services layer:
1033 osgendbg.c -- Example implementation, and used for AcpiExec
1035 Update for Generic Address Space (GAS) support: Although the AccessWidth
1036 and/or BitOffset fields of the GAS are not often used, this change now
1037 fully supports these fields. This affects the internal support for FADT
1038 registers, registers in other ACPI data tables, and the AcpiRead and
1039 AcpiWrite public interfaces. Lv Zheng.
1041 Sleep support: In order to simplify integration of ACPI sleep for the
1042 various host operating systems, a new OSL interface has been introduced.
1043 AcpiOsEnterSleep allows the host to perform any required operations
1044 before the final write to the sleep control register(s) is performed by
1048 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
1050 Called from these internal interfaces:
1054 EFI support: Added a very small EFI/ACPICA example application. Provides
1055 a simple demo for EFI integration, as well as assisting with resolution
1056 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
1058 source/tools/efihello/efihello.c
1060 Local C library: Implemented several new functions to enhance ACPICA
1061 portability, for environments where these clib functions are not
1062 available (such as EFI). Lv Zheng:
1069 Fixed a regression where occasionally a valid resource descriptor was
1070 incorrectly detected as invalid at runtime, and a
1071 AE_AML_NO_RESOURCE_END_TAG was returned.
1073 Fixed a problem with the recently implemented support that enables
1074 control method invocations as Target operands to many ASL operators.
1075 Warnings of this form: "Needed type [Reference], found [Processor]" were
1076 seen at runtime for some method invocations.
1078 Example Code and Data Size: These are the sizes for the OS-independent
1079 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1080 debug version of the code includes the debug output trace mechanism and
1081 has a much larger code and data size.
1084 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
1085 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
1087 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
1088 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
1091 2) iASL Compiler/Disassembler and Tools:
1093 Disassembler: Enhanced output by adding the capability to detect and
1094 disassemble ASL Switch/Case statements back to the original ASL source
1095 code instead of if/else blocks. David Box.
1097 AcpiHelp: Split a large file into separate files based upon
1098 functionality/purpose. New files are:
1102 ----------------------------------------
1103 17 November 2016. Summary of changes for version 20161117:
1106 1) ACPICA kernel-resident subsystem:
1108 Table Manager: Fixed a regression introduced in 20160729, "FADT support
1109 cleanup". This was an attempt to remove all references in the source to
1110 the FADT version 2, which never was a legal version number. It was
1111 skipped because it was an early version of 64-bit support that was
1112 eventually abandoned for the current 64-bit support.
1114 Interpreter: Fixed a problem where runtime implicit conversion was
1115 incorrectly disabled for the ASL operators below. This brings the
1116 behavior into compliance with the ACPI specification:
1124 Table Manager: Added a new public interface, AcpiPutTable, used to
1125 release and free an ACPI table returned by AcpiGetTable and related
1126 interfaces. Lv Zheng.
1128 Example Code and Data Size: These are the sizes for the OS-independent
1129 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1130 debug version of the code includes the debug output trace mechanism and
1131 has a much larger code and data size.
1134 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
1135 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
1137 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
1138 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
1141 2) iASL Compiler/Disassembler and Tools:
1143 Disassembler: Fixed a regression for disassembly of Resource Template.
1144 Detection of templates in the AML stream missed some types of templates.
1146 iASL: Fixed a problem where an Access Size error was returned for the PCC
1147 address space when the AccessSize of the GAS register is greater than a
1150 iASL: Implemented several grammar changes for the operators below. These
1151 changes are slated for the next version of the ACPI specification:
1152 RefOf - Disallow method invocation as an operand
1153 CondRefOf - Disallow method invocation as an operand
1154 DerefOf - Disallow operands that use the result from operators
1156 do not return a reference (Changed TermArg to
1159 iASL: Control method invocations are now allowed for Target operands, as
1160 per the ACPI specification. Removed error for using a control method
1161 invocation as a Target operand.
1163 Disassembler: Improved detection of Resource Templates, Unicode, and
1164 Strings within Buffer objects. These subtypes do not contain a specific
1165 opcode to indicate the originating ASL code, and they must be detected by
1166 other means within the disassembler.
1168 iASL: Implemented an optimization improvement for 32-bit ACPI tables
1169 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
1170 only after 64-bit to 32-bit truncation. A truncation warning message is
1171 still emitted, however.
1173 AcpiXtract: Implemented handling for both types of line terminators (LF
1174 or CR/LF) so that it can accept AcpiDump output files from any system.
1177 AcpiBin: Added two new options for comparing AML files:
1178 -a: compare and display ALL mismatches
1179 -o: start compare at this offset into the second file
1181 ----------------------------------------
1182 30 September 2016. Summary of changes for version 20160930:
1185 1) ACPICA kernel-resident subsystem:
1187 Fixed a regression in the internal AcpiTbFindTable function where a non
1188 AE_OK exception could inadvertently be returned even if the function did
1189 not fail. This problem affects the following operators:
1193 Fixed a regression in the LoadTable operator where a load to any
1194 namespace location other than the root no longer worked properly.
1196 Increased the maximum loop count value that will result in the
1197 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
1198 prevent infinite loops within the AML interpreter and thus the host OS
1199 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
1202 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
1203 acpixf.h file. This allows hosts to easily configure the maximum loop
1206 Removed an illegal character in the strtoul64.c file. This character
1207 caused errors with some C compilers.
1209 Example Code and Data Size: These are the sizes for the OS-independent
1210 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1211 debug version of the code includes the debug output trace mechanism and
1212 has a much larger code and data size.
1215 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
1216 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
1218 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
1219 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1222 2) iASL Compiler/Disassembler and Tools:
1224 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
1225 the simpler ASL ElseIf keyword. During the conversion, a trailing If
1226 block could be lost and missing from the disassembled output.
1228 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
1229 the missing rule caused a parse error when using the Index operator as an
1230 operand to ObjectType. This construct now compiles properly. Example:
1231 ObjectType(PKG1[4]).
1233 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
1234 option). Previously, unresolved symbols could cause a protection fault.
1235 Such symbols are now marked as unresolved in the map file.
1237 iASL: Implemented support to allow control method invocations as an
1238 operand to the ASL DeRefOf operator. Example:
1239 DeRefOf(MTH1(Local0))
1241 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
1242 possible _PLD buffer now includes examination of both the normal buffer
1243 length (16 or 20) as well as the surrounding AML package length.
1245 Disassembler: Fixed a problem with the decoding of complex expressions
1246 within the Divide operator for ASL+. For the case where both the quotient
1247 and remainder targets are specified, the entire statement cannot be
1248 disassembled. Previously, the output incorrectly contained a mix of ASL-
1249 and ASL+ operators. This mixed statement causes a syntax error when
1251 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
1253 Divide (INT1 + 6, 128, RSLT, QUOT)
1255 iASL/Tools: Added support to process AML and non-AML ACPI tables
1256 consistently. For the disassembler and AcpiExec, allow all types of ACPI
1257 tables (AML and data tables). For the iASL -e option, allow only AML
1260 ----------------------------------------
1261 31 August 2016. Summary of changes for version 20160831:
1264 1) ACPICA kernel-resident subsystem:
1266 Improve support for the so-called "module-level code", which is defined
1267 to be math, logical and control AML opcodes that appear outside of any
1268 control method. This change improves the support by adding more opcodes
1269 that can be executed in the manner. Some other issues have been solved,
1270 and the ASL grammar changes to support such code under all scope
1271 operators (Device, etc.) are complete. Lv Zheng.
1273 UEFI support: these OSL functions have been implemented. This is an
1274 additional step toward supporting the AcpiExec utility natively (with
1275 full hardware access) under UEFI. Marcelo Ferreira.
1276 AcpiOsReadPciConfiguration
1277 AcpiOsWritePciConfiguration
1279 Fixed a possible mutex error during control method auto-serialization. Lv
1282 Updated support for the Generic Address Structure by fully implementing
1283 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
1286 Updated the return value for the internal _OSI method. Instead of
1287 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
1288 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
1289 implementations, and will be reflected and clarified in the next version
1290 of the ACPI specification.
1292 Implemented two new table events that can be passed to an ACPICA table
1293 handler. These events are used to indicate a table installation or
1294 uninstallation. These events are used in addition to existed table load
1295 and unload events. Lv Zheng.
1297 Implemented a cleanup for all internal string-to-integer conversions.
1298 Consolidate multiple versions of this functionality and limit possible
1299 bases to either 10 or 16 to simplify the code. Adds a new file,
1302 Cleanup the inclusion order of the various compiler-specific headers.
1303 This simplifies build configuration management. The compiler-specific
1304 headers are now split out from the host-specific headers. Lv Zheng.
1306 Example Code and Data Size: These are the sizes for the OS-independent
1307 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1308 debug version of the code includes the debug output trace mechanism and
1309 has a much larger code and data size.
1312 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
1313 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1316 2) iASL Compiler/Disassembler and Tools:
1318 iASL/AcpiExec: Added a command line option to display the build date/time
1319 of the tool (-vd). This can be useful to verify that the correct version
1320 of the tools are being used.
1322 AML Debugger: Implemented a new subcommand ("execute predef") to execute
1323 all predefined control methods and names within the current namespace.
1324 This can be useful for debugging problems with ACPI tables and the ACPI
1327 ----------------------------------------
1328 29 July 2016. Summary of changes for version 20160729:
1331 1) ACPICA kernel-resident subsystem:
1333 Implemented basic UEFI support for the various ACPICA tools. This
1335 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
1336 2) Support to obtain the ACPI tables on UEFI.
1337 3) Local implementation of required C library functions not available on
1339 4) A front-end (main) function for the tools for UEFI-related
1342 The initial deployment of this support is the AcpiDump utility executing
1343 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
1344 Current environments supported are Linux/Unix. MSVC generation is not
1345 supported at this time. See the generate/efi/README file for build
1346 instructions. Lv Zheng.
1348 Future plans include porting the AcpiExec utility to execute natively on
1349 the platform with I/O and memory access. This will allow viewing/dump of
1350 the platform namespace and native execution of ACPI control methods that
1351 access the actual hardware. To fully implement this support, the OSL
1352 functions below must be implemented with UEFI interfaces. Any community
1353 help in the implementation of these functions would be appreciated:
1358 AcpiOsReadPciConfiguration
1359 AcpiOsWritePciConfiguration
1361 Restructured and standardized the C library configuration for ACPICA,
1362 resulting in the various configuration options below. This includes a
1363 global restructuring of the compiler-dependent and platform-dependent
1364 include files. These changes may affect the existing platform-dependent
1365 configuration files on some hosts. Lv Zheng.
1367 The current C library configuration options appear below. For any issues,
1368 it may be helpful to examine the existing compiler-dependent and
1369 platform-dependent files as examples. Lv Zheng.
1372 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1374 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1375 2) Unix/Windows/BSD applications:
1376 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
1378 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1379 3) UEFI applications:
1380 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1382 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
1383 4) UEFI applications (EDK2/StdLib):
1384 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
1385 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
1388 AML interpreter: "module-level code" support. Allows for execution of so-
1389 called "executable" AML code (math/logical operations, etc.) outside of
1390 control methods not just at the module level (top level) but also within
1391 any scope declared outside of a control method - Scope{}, Device{},
1392 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
1394 Simplified the configuration of the "maximum AML loops" global option by
1395 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
1396 modified at runtime.
1399 Example Code and Data Size: These are the sizes for the OS-independent
1400 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1401 debug version of the code includes the debug output trace mechanism and
1402 has a much larger code and data size.
1405 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
1406 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
1409 2) iASL Compiler/Disassembler and Tools:
1411 iASL: Add full support for the RASF ACPI table (RAS Features Table).
1412 Includes disassembler, data table compiler, and header support.
1414 iASL Expand "module-level code" support. Allows for
1415 compilation/disassembly of so-called "executable" AML code (math/logical
1416 operations, etc.) outside of control methods not just at the module level
1417 (top level) but also within any scope declared outside of a control
1418 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
1421 AcpiDump: Added support for dumping all SSDTs on newer versions of
1422 Windows. These tables are now easily available -- SSDTs are not available
1423 through the registry on older versions.
1425 ----------------------------------------
1426 27 May 2016. Summary of changes for version 20160527:
1429 1) ACPICA kernel-resident subsystem:
1431 Temporarily reverted the new arbitrary bit length/alignment support in
1432 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
1433 a number of regressions with the new code that need to be fully resolved
1434 and tested before this support can be finally integrated into ACPICA.
1435 Apologies for any inconveniences these issues may have caused.
1437 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
1438 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
1439 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
1441 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
1442 option. Adds a new return macro, return_STR. Junk-uk Kim.
1444 Example Code and Data Size: These are the sizes for the OS-independent
1445 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1446 debug version of the code includes the debug output trace mechanism and
1447 has a much larger code and data size.
1450 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
1451 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1453 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1454 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
1456 ----------------------------------------
1457 22 April 2016. Summary of changes for version 20160422:
1459 1) ACPICA kernel-resident subsystem:
1461 Fixed a regression in the GAS (generic address structure) arbitrary bit
1462 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
1463 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
1465 ACPI 6.0: Added support for new/renamed resource macros. One new argument
1466 was added to each of these macros, and the original name has been
1467 deprecated. The AML disassembler will always disassemble to the new
1468 names. Support for the new macros was added to iASL, disassembler,
1469 resource manager, and the acpihelp utility. ACPICA BZ 1274.
1471 I2cSerialBus -> I2cSerialBusV2
1472 SpiSerialBus -> SpiSerialBusV2
1473 UartSerialBus -> UartSerialBusV2
1475 ACPI 6.0: Added support for a new integer field that was appended to the
1476 package object returned by the _BIX method. This adds iASL compile-time
1477 and AML runtime error checking. ACPICA BZ 1273.
1479 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
1480 Subspace Type2" (Headers, Disassembler, and data table compiler).
1482 Example Code and Data Size: These are the sizes for the OS-independent
1483 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1484 debug version of the code includes the debug output trace mechanism and
1485 has a much larger code and data size.
1488 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1489 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1491 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1492 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1495 2) iASL Compiler/Disassembler and Tools:
1497 iASL: Implemented an ASL grammar extension to allow/enable executable
1498 "module-level code" to be created and executed under the various
1499 operators that create new scopes. This type of AML code is already
1500 supported in all known AML interpreters, and the grammar change will
1501 appear in the next version of the ACPI specification. Simplifies the
1502 conditional runtime creation of named objects under these object types:
1510 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
1511 ease-of-use to the ASL language. The syntax is similar to the
1512 corresponding C operator, and is implemented with the existing AML While
1513 opcode -- thus requiring no changes to existing AML interpreters.
1515 For (Initialize, Predicate, Update) {TermList}
1520 Initializer // Nothing | TermArg => ComputationalData
1521 Predicate // Nothing | TermArg => ComputationalData
1522 Update // Nothing | TermArg => ComputationalData
1526 iASL: The _HID/_ADR detection and validation has been enhanced to search
1527 under conditionals in order to allow these objects to be conditionally
1530 iASL: Fixed several issues with the constant folding feature. The
1531 improvement allows better detection and resolution of statements that can
1532 be folded at compile time. ACPICA BZ 1266.
1534 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
1535 conversion to the ASL ElseIf operator where incorrect ASL code could be
1538 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
1539 sometimes an extra (and extraneous) set of parentheses were emitted for
1540 some combinations of operators. Although this did not cause any problems
1541 with recompilation of the disassembled code, it made the code more
1542 difficult to read. David Box. ACPICA BZ 1231.
1544 iASL: Changed to ignore the unreferenced detection for predefined names
1545 of resource descriptor elements, when the resource descriptor is
1546 created/defined within a control method.
1548 iASL: Disassembler: Fix a possible fault with externally declared Buffer
1551 ----------------------------------------
1552 18 March 2016. Summary of changes for version 20160318:
1554 1) ACPICA kernel-resident subsystem:
1556 Added support for arbitrary bit lengths and bit offsets for registers
1557 defined by the Generic Address Structure. Previously, only aligned bit
1558 lengths of 8/16/32/64 were supported. This was sufficient for many years,
1559 but recently some machines have been seen that require arbitrary bit-
1560 level support. ACPICA BZ 1240. Lv Zheng.
1562 Fixed an issue where the \_SB._INI method sometimes must be evaluated
1563 before any _REG methods are evaluated. Lv Zheng.
1565 Implemented several changes related to ACPI table support
1566 (Headers/Disassembler/TableCompiler):
1567 NFIT: For ACPI 6.1, updated to add some additional new fields and
1569 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
1571 DMAR: Added new constants per the 10/2014 DMAR spec.
1572 IORT: Added new subtable per the 10/2015 IORT spec.
1573 HEST: For ACPI 6.1, added new constants and new subtable.
1574 DBG2: Added new constants per the 12/2015 DBG2 spec.
1575 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
1577 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
1579 Updated header support for the DMAR table to match the current version of
1582 Added extensions to the ASL Concatenate operator to allow any ACPI object
1583 to be passed as an operand. Any object other than Integer/String/Buffer
1584 simply returns a string containing the object type. This extends the
1585 usefulness of the Printf macros. Previously, Concatenate would abort the
1586 control method if a non-data object was encountered.
1588 ACPICA source code: Deployed the C "const" keyword across the source code
1589 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
1591 Example Code and Data Size: These are the sizes for the OS-independent
1592 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1593 debug version of the code includes the debug output trace mechanism and
1594 has a much larger code and data size.
1597 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1598 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1600 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1601 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1604 2) iASL Compiler/Disassembler and Tools:
1606 iASL/Disassembler: Improved the heuristic used to determine the number of
1607 arguments for an externally defined control method (a method in another
1608 table). Although this is an improvement, there is no deterministic way to
1609 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1610 will completely solve this problem as it is deployed (automatically) in
1613 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1614 statements that could cause errors when the disassembled file is
1615 compiled. ACPICA BZ 1243. David Box.
1617 iASL: Fixed a regression caused by the merger of the two versions of the
1618 local strtoul64. Because of a dependency on a global variable, strtoul64
1619 could return an error for integers greater than a 32-bit value. ACPICA BZ
1622 iASL: Fixed a regression where a fault could occur for an ASL Return
1623 statement if it invokes a control method that is not resolved. ACPICA BZ
1626 AcpiXtract: Improved input file validation: detection of binary files and
1627 non-acpidump text files.
1629 ----------------------------------------
1630 12 February 2016. Summary of changes for version 20160212:
1632 1) ACPICA kernel-resident subsystem:
1634 Implemented full support for the ACPI 6.1 specification (released in
1635 January). This version of the specification is available at:
1636 http://www.uefi.org/specifications
1638 Only a relatively small number of changes were required in ACPICA to
1639 support ACPI 6.1, in these areas:
1640 - New predefined names
1642 - A new subtable for HEST
1643 - A few other header changes for new values
1645 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1646 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1648 Reverted a change made in version 20151218 which enabled method
1649 invocations to be targets of various ASL operators (SuperName and Target
1650 grammar elements). While the new behavior is supported by the ACPI
1651 specification, other AML interpreters do not support this behavior and
1652 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1653 this support. Therefore, the change was reverted to the original ACPICA
1656 ACPICA now supports the GCC 6 compiler.
1658 Current Release: (Note: build changes increased sizes)
1659 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1660 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1662 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1663 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1666 2) iASL Compiler/Disassembler and Tools:
1668 Completed full support for the ACPI 6.0 External() AML opcode. The
1669 compiler emits an external AML opcode for each ASL External statement.
1670 This opcode is used by the disassembler to assist with the disassembly of
1671 external control methods by specifying the required number of arguments
1672 for the method. AML interpreters do not use this opcode. To ensure that
1673 interpreters do not even see the opcode, a block of one or more external
1674 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1675 commonly deployed in BIOS code, the ability of disassemblers to correctly
1676 disassemble AML code will be greatly improved. David Box.
1678 iASL: Implemented support for an optional cross-reference output file.
1679 The -lx option will create a the cross-reference file with the suffix
1680 "xrf". Three different types of cross-reference are created in this file:
1681 - List of object references made from within each control method
1682 - Invocation (caller) list for each user-defined control method
1683 - List of references to each non-method object in the namespace
1685 iASL: Method invocations as ASL Target operands are now disallowed and
1686 flagged as errors in preparation for ACPI 6.2 (see the description of the
1689 ----------------------------------------
1690 8 January 2016. Summary of changes for version 20160108:
1692 1) ACPICA kernel-resident subsystem:
1694 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1695 copyright to all source code module headers and utility/tool signons.
1696 This includes the standard Linux dual-license header. This affects
1697 virtually every file in the ACPICA core subsystem, iASL compiler, all
1698 ACPICA utilities, and the ACPICA test suite.
1700 Fixed a regression introduced in version 20151218 concerning the
1701 execution of so-called module-level ASL/AML code. Namespace objects
1702 created under a module-level If() construct were not properly/fully
1703 entered into the namespace and could cause an interpreter fault when
1706 Example Code and Data Size: These are the sizes for the OS-independent
1707 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1708 debug version of the code includes the debug output trace mechanism and
1709 has a much larger code and data size.
1712 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1713 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1715 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1716 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1719 2) iASL Compiler/Disassembler and Tools:
1721 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1722 descriptors. The _PIN field name was incorrectly defined to be an array
1723 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1724 would cause incorrect bit width warnings when using Word (16-bit) fields
1725 to access the descriptors.
1728 ----------------------------------------
1729 18 December 2015. Summary of changes for version 20151218:
1731 1) ACPICA kernel-resident subsystem:
1733 Implemented per-AML-table execution of "module-level code" as individual
1734 ACPI tables are loaded into the namespace during ACPICA initialization.
1735 In other words, any module-level code within an AML table is executed
1736 immediately after the table is loaded, instead of batched and executed
1737 after all of the tables have been loaded. This provides compatibility
1738 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1741 To fully support the feature above, the default operation region handlers
1742 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1743 installed before any ACPI tables are loaded. This enables module-level
1744 code to access these address spaces during the table load and module-
1745 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1748 Implemented several changes to the internal _REG support in conjunction
1749 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1750 utilities for the changes above. Although these tools were changed, host
1751 operating systems that simply use the default handlers for SystemMemory,
1752 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1754 For example, in the code below, DEV1 is conditionally added to the
1755 namespace by the DSDT via module-level code that accesses an operation
1756 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1757 created immediately after the DSDT is loaded in order for the SSDT to
1758 successfully reference DEV1. Previously, this code would cause an
1759 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1760 fully supported by ACPICA.
1762 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1764 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1765 Field (OPR1, AnyAcc, NoLock, Preserve)
1776 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1778 External (\DEV1, DeviceObj)
1784 Fixed an AML interpreter problem where control method invocations were
1785 not handled correctly when the invocation was itself a SuperName argument
1786 to another ASL operator. In these cases, the method was not invoked.
1787 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1792 Decrement, Increment
1795 Signal, Release, Reset
1798 Implemented automatic String-to-ObjectReference conversion support for
1799 packages returned by predefined names (such as _DEP). A common BIOS error
1800 is to add double quotes around an ObjectReference namepath, which turns
1801 the reference into an unexpected string object. This support detects the
1802 problem and corrects it before the package is returned to the caller that
1803 invoked the method. Lv Zheng.
1805 Implemented extensions to the Concatenate operator. Concatenate now
1806 accepts any type of object, it is not restricted to simply
1807 Integer/String/Buffer. For objects other than these 3 basic data types,
1808 the argument is treated as a string containing the name of the object
1809 type. This expands the utility of Concatenate and the Printf/Fprintf
1810 macros. ACPICA BZ 1222.
1812 Cleaned up the output of the ASL Debug object. The timer() value is now
1813 optional and no longer emitted by default. Also, the basic data types of
1814 Integer/String/Buffer are simply emitted as their values, without a data
1815 type string -- since the data type is obvious from the output. ACPICA BZ
1818 Example Code and Data Size: These are the sizes for the OS-independent
1819 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1820 debug version of the code includes the debug output trace mechanism and
1821 has a much larger code and data size.
1824 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1825 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1827 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1828 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1831 2) iASL Compiler/Disassembler and Tools:
1833 iASL: Fixed some issues with the ASL Include() operator. This operator
1834 was incorrectly defined in the iASL parser rules, causing a new scope to
1835 be opened for the code within the include file. This could lead to
1836 several issues, including allowing ASL code that is technically illegal
1837 and not supported by AML interpreters. Note, this does not affect the
1838 related #include preprocessor operator. ACPICA BZ 1212.
1840 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1841 operator is essentially an ASL macro since there is no AML opcode
1842 associated with it. The code emitted by the iASL compiler for ElseIf is
1843 an Else opcode followed immediately by an If opcode. The disassembler
1844 will now emit an ElseIf if it finds an Else immediately followed by an
1845 If. This simplifies the decoded ASL, especially for deeply nested
1846 If..Else and large Switch constructs. Thus, the disassembled code more
1847 closely follows the original source ASL. ACPICA BZ 1211. Example:
1859 ElseIf (Arg0 == 0x02)
1864 AcpiExec: Added support for the new module level code behavior and the
1865 early region installation. This required a small change to the
1866 initialization, since AcpiExec must install its own operation region
1869 AcpiExec: Added support to make the debug object timer optional. Default
1870 is timer disabled. This cleans up the debug object output -- the timer
1871 data is rarely used.
1873 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1874 appear on the command line. This can be important when there are
1875 interdependencies/references between the tables.
1877 iASL/Templates. Add support to generate template files with multiple
1878 SSDTs within a single output file. Also added ommand line support to
1879 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1883 ----------------------------------------
1884 24 November 2015. Summary of changes for version 20151124:
1886 1) ACPICA kernel-resident subsystem:
1888 Fixed a possible regression for a previous update to FADT handling. The
1889 FADT no longer has a fixed table ID, causing some issues with code that
1890 was hardwired to a specific ID. Lv Zheng.
1892 Fixed a problem where the method auto-serialization could interfere with
1893 the current SyncLevel. This change makes the auto-serialization support
1894 transparent to the SyncLevel support and management.
1896 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1897 interface is intended for early access to the namespace during the
1898 initial namespace device discovery walk. The _SUB method has been seen to
1899 access operation regions in some cases, causing errors because the
1900 operation regions are not fully initialized.
1902 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1903 that can cause faults. Lv Zheng.
1905 AML Debugger: Add thread ID support so that single-step mode only applies
1906 to the AML Debugger thread. This prevents runtime errors within some
1909 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1910 methods that are invoked by this interface are optional, removed warnings
1911 emitted for the case where one or more of these methods do not exist.
1912 ACPICA BZ 1208, original change by Prarit Bhargava.
1914 Made a major pass through the entire ACPICA source code base to
1915 standardize formatting that has diverged a bit over time. There are no
1916 functional changes, but this will of course cause quite a few code
1917 differences from the previous ACPICA release.
1919 Example Code and Data Size: These are the sizes for the OS-independent
1920 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1921 debug version of the code includes the debug output trace mechanism and
1922 has a much larger code and data size.
1925 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1926 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1928 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1929 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1932 2) iASL Compiler/Disassembler and Tools:
1934 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1935 definition blocks within a single ASL file and the resulting AML file.
1936 Support for this type of file was also added to the various tools that
1937 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1938 example code below shows two definition blocks within the same file:
1940 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1944 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1948 iASL: Enhanced typechecking for the Name() operator. All expressions for
1949 the value of the named object must be reduced/folded to a single constant
1950 at compile time, as per the ACPI specification (the AML definition of
1953 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1954 and assembly headers). Now all emitted code correctly begins in column 1.
1956 iASL: Added an error message for an attempt to open a Scope() on an
1957 object defined in an SSDT. The DSDT is always loaded into the namespace
1958 first, so any attempt to open a Scope on an SSDT object will fail at
1962 ----------------------------------------
1963 30 September 2015. Summary of changes for version 20150930:
1965 1) ACPICA kernel-resident subsystem:
1967 Debugger: Implemented several changes and bug fixes to assist support for
1968 the in-kernel version of the AML debugger. Lv Zheng.
1969 - Fix the "predefined" command for in-kernel debugger.
1970 - Do not enter debug command loop for the help and version commands.
1971 - Disallow "execute" command during execution/single-step of a method.
1973 Interpreter: Updated runtime typechecking for all operators that have
1974 target operands. The operand is resolved and validated that it is legal.
1975 For example, the target cannot be a non-data object such as a Device,
1976 Mutex, ThermalZone, etc., as per the ACPI specification.
1978 Debugger: Fixed the double-mutex user I/O handshake to work when local
1979 deadlock detection is enabled.
1981 Debugger: limited display of method locals and arguments (LocalX and
1982 ArgX) to only those that have actually been initialized. This prevents
1983 lines of extraneous output.
1985 Updated the definition of the NFIT table to correct the bit polarity of
1986 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1988 Example Code and Data Size: These are the sizes for the OS-independent
1989 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1990 debug version of the code includes the debug output trace mechanism and
1991 has a much larger code and data size.
1994 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1995 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1997 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1998 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
2001 2) iASL Compiler/Disassembler and Tools:
2003 iASL: Improved the compile-time typechecking for operands of many of the
2006 -- Added an option to disable compiler operand/operator typechecking (-
2009 -- For the following operators, the TermArg operands are now validated
2010 when possible to be Integer data objects: BankField, OperationRegion,
2011 DataTableRegion, Buffer, and Package.
2013 -- Store (Source, Target): Both the source and target operands are
2014 resolved and checked that the operands are both legal. For example,
2015 neither operand can be a non-data object such as a Device, Mutex,
2016 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
2017 operator can be used to store an object to any type of target object.
2019 -- Store (Source, Target): If the source is a Package object, the target
2020 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
2021 is a Package, the source must also be a Package.
2023 -- Store (Source, Target): A warning is issued if the source and target
2024 resolve to the identical named object.
2026 -- Store (Source, <method invocation>): An error is generated for the
2027 target method invocation, as this construct is not supported by the AML
2030 -- For all ASL math and logic operators, the target operand must be a
2031 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
2032 includes the function return value also.
2034 -- External declarations are also included in the typechecking where
2035 possible. External objects defined using the UnknownObj keyword cannot be
2036 typechecked, however.
2038 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
2040 - Legacy code: Index(PKG1, 3)
2041 - New ASL+ code: PKG1[3]
2042 This completes the ACPI 6.0 ASL+ support as it was the only operator not
2045 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
2046 spaces were inadvertently appended to the filename, causing file access
2047 and deletion problems on some systems.
2049 ASL Test Suite (ASLTS): Updated the master makefile to generate all
2050 possible compiler output files when building the test suite -- thus
2051 exercising these features of the compiler. These files are automatically
2052 deleted when the test suite exits.
2055 ----------------------------------------
2056 18 August 2015. Summary of changes for version 20150818:
2058 1) ACPICA kernel-resident subsystem:
2060 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
2061 Zheng. ACPICA BZ 1186.
2063 Completed development to ensure that the ACPICA Disassembler and Debugger
2064 are fully standalone components of ACPICA. Removed cross-component
2065 dependences. Lv Zheng.
2067 The max-number-of-AML-loops is now runtime configurable (previously was
2068 compile-time only). This is essentially a loop timeout to force-abort
2069 infinite AML loops. ACPCIA BZ 1192.
2071 Debugger: Cleanup output to dump ACPI names and namepaths without any
2072 trailing underscores. Lv Zheng. ACPICA BZ 1135.
2074 Removed unnecessary conditional compilations across the Debugger and
2075 Disassembler components where entire modules could be left uncompiled.
2077 The aapits test is deprecated and has been removed from the ACPICA git
2078 tree. The test has never been completed and has not been maintained, thus
2079 becoming rather useless. ACPICA BZ 1015, 794.
2081 A batch of small changes to close bugzilla and other reports:
2082 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
2083 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
2084 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
2085 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
2087 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
2089 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
2091 - Debugger: Split debugger initialization/termination interfaces. Lv
2093 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
2095 - AcpiExec: Add debug message during _REG method phase during table
2097 - AcpiNames: Fix a regression where some output was missing and no longer
2099 - Debugger: General cleanup and simplification. Lv Zheng.
2100 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
2102 Example Code and Data Size: These are the sizes for the OS-independent
2103 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2104 debug version of the code includes the debug output trace mechanism and
2105 has a much larger code and data size.
2108 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
2109 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
2111 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
2112 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
2115 2) iASL Compiler/Disassembler and Tools:
2117 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
2118 were not handled properly and caused load errors. Now, properly invoke
2119 and use the ACPICA auto-reallocate mechanism for ACPI table data
2120 structures. ACPICA BZ 1188
2122 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
2125 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
2126 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
2127 executed during initialization. ACPICA BZ 1187, 1189.
2129 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
2130 that corresponds to each disassembled ASL statement, to simplify
2131 debugging. ACPICA BZ 1191.
2133 Debugger: Add option to the "objects" command to display a summary of the
2134 current namespace objects (Object type and count). This is displayed if
2135 the command is entered with no arguments.
2137 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
2140 ----------------------------------------
2141 17 July 2015. Summary of changes for version 20150717:
2143 1) ACPICA kernel-resident subsystem:
2145 Improved the partitioning between the Debugger and Disassembler
2146 components. This allows the Debugger to be used standalone within kernel
2147 code without the Disassembler (which is used for single stepping also).
2148 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
2150 Debugger: Implemented a new command to trace the execution of control
2151 methods (Trace). This is especially useful for the in-kernel version of
2152 the debugger when file I/O may not be available for method trace output.
2153 See the ACPICA reference for more information. Lv Zheng.
2155 Moved all C library prototypes (used for the local versions of these
2156 functions when requested) to a new header, acclib.h
2157 Cleaned up the use of non-ANSI C library functions. These functions are
2158 implemented locally in ACPICA. Moved all such functions to a common
2159 source file, utnonansi.c
2161 Debugger: Fixed a problem with the "!!" command (get last command
2162 executed) where the debugger could enter an infinite loop and eventually
2165 Removed the use of local macros that were used for some of the standard C
2166 library functions to automatically cast input parameters. This mostly
2167 affected the is* functions where the input parameter is defined to be an
2168 int. This required a few modifications to the main ACPICA source code to
2169 provide casting for these functions and eliminate possible compiler
2170 warnings for these parameters.
2172 Across the source code, added additional status/error checking to resolve
2173 issues discovered by static source code analysis tools such as Coverity.
2175 Example Code and Data Size: These are the sizes for the OS-independent
2176 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2177 debug version of the code includes the debug output trace mechanism and
2178 has a much larger code and data size.
2181 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
2182 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
2184 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2185 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2188 2) iASL Compiler/Disassembler and Tools:
2190 iASL: Fixed a regression where the device map file feature no longer
2191 worked properly when used in conjunction with the disassembler. It only
2192 worked properly with the compiler itself.
2194 iASL: Implemented a new warning for method LocalX variables that are set
2195 but never used (similar to a C compiler such as gcc). This also applies
2196 to ArgX variables that are not defined by the parent method, and are
2197 instead (legally) used as local variables.
2199 iASL/Preprocessor: Finished the pass-through of line numbers from the
2200 preprocessor to the compiler. This ensures that compiler errors/warnings
2201 have the correct original line numbers and filenames, regardless of any
2204 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
2205 pass-through of comments to the preprocessor output file (which becomes
2206 the compiler input file). Also fixed a problem with // comments that
2207 appear after a math expression.
2209 iASL: Added support for the TCPA server table to the table compiler and
2210 template generator. (The client table was already previously supported)
2212 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
2213 identify the iASL compiler.
2215 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
2216 multiple times. The new names are ACPI_SIGN_NEGATIVE and
2219 AcpiHelp: Update to expand help messages for the iASL preprocessor
2223 ----------------------------------------
2224 19 June 2015. Summary of changes for version 20150619:
2226 Two regressions in version 20150616 have been addressed:
2228 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
2229 etc.) This update changes ACPICA to only use the standard headers for
2230 functions, or the prototypes for the local versions of the C library
2231 functions. Across the source code, this required some additional casts
2232 for some Clib invocations for portability. Moved all local prototypes to
2233 a new file, acclib.h
2235 Fixes several problems with recent changes to the handling of the FACS
2236 table that could cause some systems not to boot.
2239 ----------------------------------------
2240 16 June 2015. Summary of changes for version 20150616:
2243 1) ACPICA kernel-resident subsystem:
2245 Across the entire ACPICA source code base, the various macros for the C
2246 library functions (such as ACPI_STRLEN, etc.) have been removed and
2247 replaced by the standard C library names (strlen, etc.) The original
2248 purpose for these macros is no longer applicable. This simplification
2249 reduces the number of macros used in the ACPICA source code
2250 significantly, improving readability and maintainability.
2252 Implemented support for a new ACPI table, the OSDT. This table, the
2253 "override" SDT, can be loaded directly by the host OS at boot time. It
2254 enables the replacement of existing namespace objects that were installed
2255 via the DSDT and/or SSDTs. The primary purpose for this is to replace
2256 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
2257 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
2260 Added support for systems with (improperly) two FACS tables -- a "32-bit"
2261 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
2262 X field). This change will support both automatically. There continues to
2263 be systems found with this issue. This support requires a change to the
2264 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
2265 been added to allow the host to select which FACS is desired
2266 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
2269 Added a new feature to allow for systems that do not contain an FACS.
2270 Although this is already supported on hardware-reduced platforms, the
2271 feature has been extended for all platforms. The reasoning is that we do
2272 not want to abort the entire ACPICA initialization just because the
2273 system is seriously buggy and has no FACS.
2275 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
2276 not correctly transcribed from the ACPI specification in ACPICA version
2279 Implemented support for the _CLS object in the AcpiGetObjectInfo external
2282 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
2283 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
2284 compiler also updated. Note: The TCPA "server" table is not supported by
2285 the disassembler/table-compiler at this time.
2287 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
2289 Example Code and Data Size: These are the sizes for the OS-independent
2290 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2291 debug version of the code includes the debug output trace mechanism and
2292 has a much larger code and data size.
2295 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2296 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2298 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2299 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2302 2) iASL Compiler/Disassembler and Tools:
2304 Disassembler: Fixed a problem with the new symbolic operator disassembler
2305 where incorrect ASL code could be emitted in some cases for the "non-
2306 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
2307 ShiftRight. The actual problem cases seem to be rather unusual in common
2308 ASL code, however. David Box.
2310 Modified the linux version of acpidump to obtain ACPI tables from not
2311 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
2314 iASL: Fixed a problem where the user preprocessor output file (.i)
2315 contained extra data that was not expected. The compiler was using this
2316 file as a temporary file and passed through #line directives in order to
2317 keep compiler error messages in sync with the input file and line number
2318 across multiple include files. The (.i) is no longer a temporary file as
2319 the compiler uses a new, different file for the original purpose.
2321 iASL: Fixed a problem where comments within the original ASL source code
2322 file were not passed through to the preprocessor output file, nor any
2325 iASL: Fixed some issues for the handling of the "#include" preprocessor
2326 directive and the similar (but not the same) "Include" ASL operator.
2328 iASL: Add support for the new OSDT in both the disassembler and compiler.
2330 iASL: Fixed a problem with the constant folding support where a Buffer
2331 object could be incorrectly generated (incorrectly formed) during a
2332 conversion to a Store() operator.
2334 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
2335 description text for the _REV predefined name. _REV now permanently
2336 returns 2, as per the ACPI 6.0 specification.
2338 Debugger: Enhanced the output of the Debug ASL object for references
2339 produced by the Index operator. For Buffers and strings, only output the
2340 actual byte pointed to by the index. For packages, only print the single
2341 package element decoded by the index. Previously, the entire
2342 buffer/string/package was emitted.
2344 iASL/Table-compiler: Fixed a regression where the "generic" data types
2345 were no longer recognized, causing errors.
2348 ----------------------------------------
2349 15 May 2015. Summary of changes for version 20150515:
2351 This release implements most of ACPI 6.0 as described below.
2353 1) ACPICA kernel-resident subsystem:
2355 Implemented runtime argument checking and return value checking for all
2356 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
2357 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
2359 Example Code and Data Size: These are the sizes for the OS-independent
2360 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2361 debug version of the code includes the debug output trace mechanism and
2362 has a much larger code and data size.
2365 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2366 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2368 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2369 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2372 2) iASL Compiler/Disassembler and Tools:
2374 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
2375 names (argument count validation and return value typechecking.)
2377 iASL disassembler and table compiler: implemented support for all new
2378 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
2380 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
2383 iASL preprocessor: Added a new directive to enable inclusion of binary
2384 blobs into ASL code. The new directive is #includebuffer. It takes a
2385 binary file as input and emits a named ascii buffer object into the ASL
2388 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
2390 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
2393 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
2397 ----------------------------------------
2398 10 April 2015. Summary of changes for version 20150410:
2400 Reverted a change introduced in version 20150408 that caused
2401 a regression in the disassembler where incorrect operator
2402 symbols could be emitted.
2405 ----------------------------------------
2406 08 April 2015. Summary of changes for version 20150408:
2409 1) ACPICA kernel-resident subsystem:
2411 Permanently set the return value for the _REV predefined name. It now
2412 returns 2 (was 5). This matches other ACPI implementations. _REV will be
2413 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
2414 for ACPI 2.0 and later. It should never be used to differentiate or
2415 identify operating systems.
2417 Added the "Windows 2015" string to the _OSI support. ACPICA will now
2418 return TRUE to a query with this string.
2420 Fixed several issues with the local version of the printf function.
2422 Added the C99 compiler option (-std=c99) to the Unix makefiles.
2425 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
2426 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
2428 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2429 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2432 2) iASL Compiler/Disassembler and Tools:
2434 iASL: Implemented an enhancement to the constant folding feature to
2435 transform the parse tree to a simple Store operation whenever possible:
2436 Add (2, 3, X) ==> is converted to: Store (5, X)
2437 X = 2 + 3 ==> is converted to: Store (5, X)
2439 Updated support for the SLIC table (Software Licensing Description Table)
2440 in both the Data Table compiler and the disassembler. The SLIC table
2441 support now conforms to "Microsoft Software Licensing Tables (SLIC and
2442 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
2443 following the ACPI header is now defined to be "Proprietary Data", and as
2444 such, can only be entered or displayed as a hex data block.
2446 Implemented full support for the MSDM table as described in the document
2447 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
2448 following the ACPI header is defined to be "Proprietary Data", and can
2449 only be entered or displayed as a hex data block.
2451 Implemented the -Pn option for the iASL Table Compiler (was only
2452 implemented for the ASL compiler). This option disables the iASL
2455 Disassembler: For disassembly of Data Tables, added a comment field
2456 around the Ascii equivalent data that is emitted as part of the "Raw
2457 Table Data" block. This prevents the iASL Preprocessor from possible
2458 confusion if/when the table is compiled.
2460 Disassembler: Added an option (-df) to force the disassembler to assume
2461 that the table being disassembled contains valid AML. This feature is
2462 useful for disassembling AML files that contain ACPI signatures other
2463 than DSDT or SSDT (such as OEMx or other signatures).
2465 Changes for the EFI version of the tools:
2466 1) Fixed a build error/issue
2467 2) Fixed a cast warning
2469 iASL: Fixed a path issue with the __FILE__ operator by making the
2470 directory prefix optional within the internal SplitInputFilename
2473 Debugger: Removed some unused global variables.
2475 Tests: Updated the makefile for proper generation of the AAPITS suite.
2478 ----------------------------------------
2479 04 February 2015. Summary of changes for version 20150204:
2481 ACPICA kernel-resident subsystem:
2483 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2484 copyright to all module headers and signons, including the standard Linux
2485 header. This affects virtually every file in the ACPICA core subsystem,
2486 iASL compiler, all ACPICA utilities, and the test suites.
2488 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
2489 A raw gpe handling mechanism was created to allow better handling of GPE
2490 storms that aren't easily managed by the normal handler. The raw handler
2491 allows disabling/renabling of the the GPE so that interrupt storms can be
2492 avoided in cases where events cannot be timely serviced. In this
2493 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
2494 GPE. This API will leave the reference counts undisturbed, thereby
2495 preventing unintentional clearing of the GPE when the intent in only to
2496 temporarily disable it. Raw handlers allow enabling and disabling of a
2497 GPE by removing GPE register locking. As such, raw handlers much provide
2498 their own locks while using GPE API's to protect access to GPE data
2502 Events: Always modify GPE registers under the GPE lock.
2503 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
2504 values. Reported as bug by joe.liu@apple.com.
2506 Unix makefiles: Separate option to disable optimizations and
2507 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
2508 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
2509 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
2510 errors when building ACPICA. This allows disabling the option without
2511 also having to disable optimazations.
2515 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2516 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
2519 --------------------------------------
2520 07 November 2014. Summary of changes for version 20141107:
2522 This release is available at https://acpica.org/downloads
2524 This release introduces and implements language extensions to ASL that
2525 provide support for symbolic ("C-style") operators and expressions. These
2526 language extensions are known collectively as ASL+.
2529 1) iASL Compiler/Disassembler and Tools:
2531 Disassembler: Fixed a problem with disassembly of the UartSerialBus
2532 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
2535 Disassembler: Fixed the Unicode macro support to add escape sequences.
2536 All non-printable ASCII values are emitted as escape sequences, as well
2537 as the standard escapes for quote and backslash. Ensures that the
2538 disassembled macro can be correctly recompiled.
2540 iASL: Added Printf/Fprintf macros for formatted output. These macros are
2541 translated to existing AML Concatenate and Store operations. Printf
2542 writes to the ASL Debug object. Fprintf allows the specification of an
2543 ASL name as the target. Only a single format specifier is required, %o,
2544 since the AML interpreter dynamically converts objects to the required
2547 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2548 (Concatenate (Concatenate (Concatenate ("", Arg0),
2549 ": Unexpected value for "), Arg1), ", "), Arg2),
2550 " at line "), Arg3), Debug)
2552 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
2553 Arg0, Arg1, Arg2, Arg3)
2555 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2556 ("", Arg1), ": "), Arg0), " Successful"), STR1)
2558 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
2560 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
2561 ASL parse tree before the AML code is generated. This allows blocks of
2562 ASL code to be removed in order to help locate and identify problem
2563 devices and/or code. David E. Box.
2565 AcpiExec: Added support (-fi) for an optional namespace object
2566 initialization file. This file specifies initial values for namespace
2567 objects as necessary for debugging and testing different ASL code paths
2568 that may be taken as a result of BIOS options.
2571 2) Overview of symbolic operator support for ASL (ASL+)
2572 -------------------------------------------------------
2574 As an extension to the ASL language, iASL implements support for symbolic
2575 (C-style) operators for math and logical expressions. This can greatly
2576 simplify ASL code as well as improve both readability and
2577 maintainability. These language extensions can exist concurrently with
2578 all legacy ASL code and expressions.
2580 The symbolic extensions are 100% compatible with existing AML
2581 interpreters, since no new AML opcodes are created. To implement the
2582 extensions, the iASL compiler transforms the symbolic expressions into
2583 the legacy ASL/AML equivalents at compile time.
2585 Full symbolic expressions are supported, along with the standard C
2586 precedence and associativity rules.
2588 Full disassembler support for the symbolic expressions is provided, and
2589 creates an automatic migration path for existing ASL code to ASL+ code
2590 via the disassembly process. By default, the disassembler now emits ASL+
2591 code with symbolic expressions. An option (-dl) is provided to force the
2592 disassembler to emit legacy ASL code if desired.
2594 Below is the complete list of the currently supported symbolic operators
2595 with examples. See the iASL User Guide for additional information.
2598 ASL+ Syntax Legacy ASL Equivalent
2599 ----------- ---------------------
2603 Z = X + Y Add (X, Y, Z)
2604 Z = X - Y Subtract (X, Y, Z)
2605 Z = X * Y Multiply (X, Y, Z)
2606 Z = X / Y Divide (X, Y, , Z)
2607 Z = X % Y Mod (X, Y, Z)
2608 Z = X << Y ShiftLeft (X, Y, Z)
2609 Z = X >> Y ShiftRight (X, Y, Z)
2610 Z = X & Y And (X, Y, Z)
2611 Z = X | Y Or (X, Y, Z)
2612 Z = X ^ Y Xor (X, Y, Z)
2617 // Logical operators
2619 (X == Y) LEqual (X, Y)
2620 (X != Y) LNotEqual (X, Y)
2621 (X < Y) LLess (X, Y)
2622 (X > Y) LGreater (X, Y)
2623 (X <= Y) LLessEqual (X, Y)
2624 (X >= Y) LGreaterEqual (X, Y)
2625 (X && Y) LAnd (X, Y)
2629 // Assignment and compound assignment operations
2632 X += Y Add (X, Y, X)
2633 X -= Y Subtract (X, Y, X)
2634 X *= Y Multiply (X, Y, X)
2635 X /= Y Divide (X, Y, , X)
2636 X %= Y Mod (X, Y, X)
2637 X <<= Y ShiftLeft (X, Y, X)
2638 X >>= Y ShiftRight (X, Y, X)
2639 X &= Y And (X, Y, X)
2641 X ^= Y Xor (X, Y, X)
2648 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2649 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2651 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2653 And (MEMB, 0xFFFFFFF0, SRMB)
2654 Store (MEMB, Local2)
2655 Store (PDBM, Local1)
2656 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2658 Or (PDBM, 0x02, PDBM)
2662 If (((R510 & 0x03FB) == 0x02E0) ||
2663 ((R520 & 0x03FB) == 0x02E0) ||
2664 ((R530 & 0x03FB) == 0x02E0) ||
2665 ((R540 & 0x03FB) == 0x02E0))
2667 SRMB = (MEMB & 0xFFFFFFF0)
2670 PDBM &= 0xFFFFFFFFFFFFFFF9
2676 Store (0x1234, Local1)
2677 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2678 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2679 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2680 Store (Index (PKG1, 0x03), Local6)
2681 Store (Add (Local3, Local2), Debug)
2682 Add (Local1, 0x0F, Local2)
2683 Add (Local1, Multiply (Local2, Local3), Local2)
2684 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2688 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2689 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2690 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2691 Local6 = Index (PKG1, 0x03)
2692 Debug = (Local3 + Local2)
2693 Local2 = (Local1 + 0x0F)
2694 Local2 = (Local1 + (Local2 * Local3))
2695 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2698 ----------------------------------------
2699 26 September 2014. Summary of changes for version 20140926:
2701 1) ACPICA kernel-resident subsystem:
2703 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2704 In order to support GPIO Connection objects with multiple pins, along
2705 with the related Field objects, the following changes to the interface
2706 have been made: The Address is now defined to be the offset in bits of
2707 the field unit from the previous invocation of a Connection. It can be
2708 viewed as a "Pin Number Index" into the connection resource descriptor.
2709 The BitWidth is the exact bit width of the field. It is usually one bit,
2710 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2711 additional information and examples.
2713 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2714 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2715 by the firmware), so that they cannot fire until they are enabled via
2716 AcpiUpdateAllGpes. Rafael J. Wysocki.
2718 Added a new return flag for the Event/GPE status interfaces --
2719 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2720 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2721 GPE currently has a handler associated with it, and can thus actually
2722 affect the system. Lv Zheng.
2724 Example Code and Data Size: These are the sizes for the OS-independent
2725 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2726 debug version of the code includes the debug output trace mechanism and
2727 has a much larger code and data size.
2730 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2731 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2733 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2734 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2736 2) iASL Compiler/Disassembler and Tools:
2738 iASL: Fixed a memory allocation/free regression introduced in 20140828
2739 that could cause the compiler to crash. This was introduced inadvertently
2740 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2743 iASL: Removed two error messages that have been found to create false
2744 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2745 1) Illegal forward reference within a method
2746 2) Illegal reference across two methods
2748 iASL: Implemented a new option (-lm) to create a hardware mapping file
2749 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2750 works for both the compiler and disassembler. See the iASL compiler user
2751 guide for additional information and examples (section 6.4.6).
2753 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2754 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2755 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2757 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2758 unless STDIN is actually a terminal. Assists with batch-mode processing.
2761 Disassembler/AcpiHelp: Added another large group of recognized _HID
2765 ----------------------------------------
2766 28 August 2014. Summary of changes for version 20140828:
2768 1) ACPICA kernel-resident subsystem:
2770 Fixed a problem related to the internal use of the Timer() operator where
2771 a 64-bit divide could cause an attempted link to a double-precision math
2772 library. This divide is not actually necessary, so the code was
2773 restructured to eliminate it. Lv Zheng.
2775 ACPI 5.1: Added support for the runtime validation of the _DSD package
2776 (similar to the iASL support).
2778 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2779 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2781 Example Code and Data Size: These are the sizes for the OS-independent
2782 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2783 debug version of the code includes the debug output trace mechanism and
2784 has a much larger code and data size.
2787 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2788 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2790 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2791 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2793 2) iASL Compiler/Disassembler and Tools:
2795 AcpiExec: Fixed a problem on unix systems where the original terminal
2796 state was not always properly restored upon exit. Seen when using the -v
2797 option. ACPICA BZ 1104.
2799 iASL: Fixed a problem with the validation of the ranges/length within the
2800 Memory24 resource descriptor. There was a boundary condition when the
2801 range was equal to the (length -1) caused by the fact that these values
2802 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2804 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2806 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2808 now supported properly.
2810 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2811 in the disassembler, data table compiler, and table template generator.
2813 iASL: Added a requirement for Device() objects that one of either a _HID
2814 or _ADR must exist within the scope of a Device, as per the ACPI
2815 specification. Remove a similar requirement that was incorrectly in place
2816 for the _DSD object.
2818 iASL: Added error detection for illegal named references within control
2819 methods that would cause runtime failures. Now trapped as errors are: 1)
2820 References to objects within a non-parent control method. 2) Forward
2821 references (within a method) -- for control methods, AML interpreters use
2822 a one-pass parse of control methods. ACPICA BZ 1008.
2824 iASL: Added error checking for dependencies related to the _PSx power
2825 methods. ACPICA BZ 1029.
2826 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2828 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2831 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2832 deploying the existing object and string caches and adding new caches for
2835 iASL: Split the huge parser source file into multiple subfiles to improve
2836 manageability. Generation now requires the M4 macro preprocessor, which
2837 is part of the Bison distribution on both unix and windows platforms.
2839 AcpiSrc: Fixed and removed all extraneous warnings generated during
2840 entire ACPICA source code scan and/or conversion.
2843 ----------------------------------------
2845 24 July 2014. Summary of changes for version 20140724:
2847 The ACPI 5.1 specification has been released and is available at:
2848 http://uefi.org/specs/access
2851 0) ACPI 5.1 support in ACPICA:
2853 ACPI 5.1 is fully supported in ACPICA as of this release.
2855 New predefined names. Support includes iASL and runtime ACPICA
2857 _CCA (Cache Coherency Attribute).
2858 _DSD (Device-Specific Data). David Box.
2860 Modifications to existing ACPI tables. Support includes headers, iASL
2861 Data Table compiler, disassembler, and the template generator.
2862 FADT - New fields and flags. Graeme Gregory.
2863 GTDT - One new subtable and new fields. Tomasz Nowicki.
2864 MADT - Two new subtables. Tomasz Nowicki.
2865 PCCT - One new subtable.
2868 New notification type for System Resource Affinity change events.
2871 1) ACPICA kernel-resident subsystem:
2873 Fixed a regression introduced in 20140627 where a fault can happen during
2874 the deletion of Alias AML namespace objects. The problem affected both
2875 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2877 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2878 simple mechanism to enable wake GPEs that have no associated handler or
2879 control method. Rafael Wysocki.
2881 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2882 handler or control method associated with the particular GPE. This will
2883 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2885 Updated GPE handling and dispatch by disabling the GPE before clearing
2886 the status bit for edge-triggered GPEs. Lv Zheng.
2888 Added Timer() support to the AML Debug object. The current timer value is
2889 now displayed with each invocation of (Store to) the debug object to
2890 enable simple generation of execution times for AML code (method
2891 execution for example.) ACPICA BZ 1093.
2893 Example Code and Data Size: These are the sizes for the OS-independent
2894 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2895 debug version of the code includes the debug output trace mechanism and
2896 has a much larger code and data size.
2899 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2900 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2902 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2903 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2906 2) iASL Compiler/Disassembler and Tools:
2908 Fixed an issue with the recently added local printf implementation,
2909 concerning width/precision specifiers that could cause incorrect output.
2910 Lv Zheng. ACPICA BZ 1094.
2912 Disassembler: Added support to detect buffers that contain UUIDs and
2913 disassemble them to an invocation of the ToUUID operator. Also emit
2914 commented descriptions of known ACPI-related UUIDs.
2916 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2917 -u. Adds three new files.
2919 iASL: Update table compiler and disassembler for DMAR table changes that
2920 were introduced in September 2013. With assistance by David Woodhouse.
2922 ----------------------------------------
2923 27 June 2014. Summary of changes for version 20140627:
2925 1) ACPICA kernel-resident subsystem:
2927 Formatted Output: Implemented local versions of standard formatted output
2928 utilities such as printf, etc. Over time, it has been discovered that
2929 there are in fact many portability issues with printf, and the addition
2930 of this feature will fix/prevent these issues once and for all. Some
2931 known issues are summarized below:
2933 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2934 for the Linux kernel and is %uI64 for some MSVC versions.
2935 2) Invoking printf consistently in a manner that is portable across both
2936 32-bit and 64-bit platforms is difficult at best in many situations.
2937 3) The output format for pointers varies from system to system (leading
2938 zeros especially), and leads to inconsistent output from ACPICA across
2940 4) Certain platform-specific printf formats may conflict with ACPICA use.
2941 5) If there is no local C library available, ACPICA now has local support
2944 -- To address these printf issues in a complete manner, ACPICA now
2945 directly implements a small subset of printf format specifiers, only
2946 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2948 Implemented support for ACPICA generation within the EFI environment.
2949 Initially, the AcpiDump utility is supported in the UEFI shell
2950 environment. Lv Zheng.
2952 Added a new external interface, AcpiLogError, to improve ACPICA
2953 portability. This allows the host to redirect error messages from the
2954 ACPICA utilities. Lv Zheng.
2956 Added and deployed new OSL file I/O interfaces to improve ACPICA
2964 There are C library implementations of these functions in the new file
2965 service_layers/oslibcfs.c -- however, the functions can be implemented by
2966 the local host in any way necessary. Lv Zheng.
2968 Implemented a mechanism to disable/enable ACPI table checksum validation
2969 at runtime. This can be useful when loading tables very early during OS
2970 initialization when it may not be possible to map the entire table in
2971 order to compute the checksum. Lv Zheng.
2973 Fixed a buffer allocation issue for the Generic Serial Bus support.
2974 Originally, a fixed buffer length was used. This change allows for
2975 variable-length buffers based upon the protocol indicated by the field
2976 access attributes. Reported by Lan Tianyu. Lv Zheng.
2978 Fixed a problem where an object detached from a namespace node was not
2979 properly terminated/cleared and could cause a circular list problem if
2980 reattached. ACPICA BZ 1063. David Box.
2982 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2984 Fixed a possible memory leak in an error return path within the function
2985 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2987 Example Code and Data Size: These are the sizes for the OS-independent
2988 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2989 debug version of the code includes the debug output trace mechanism and
2990 has a much larger code and data size.
2993 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2994 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2996 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2997 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
3000 2) iASL Compiler/Disassembler and Tools:
3002 Disassembler: Add dump of ASCII equivalent text within a comment at the
3003 end of each line of the output for the Buffer() ASL operator.
3005 AcpiDump: Miscellaneous changes:
3006 Fixed repetitive table dump in -n mode.
3007 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
3008 the ACPI 2.0 GUID fails.
3010 iASL: Fixed a problem where the compiler could fault if incorrectly given
3011 an acpidump output file as input. ACPICA BZ 1088. David Box.
3013 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
3014 they are invoked without any arguments.
3016 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
3017 1086. Colin Ian King.
3019 Disassembler: Cleaned up a block of code that extracts a parent Op
3020 object. Added a comment that explains that the parent is guaranteed to be
3021 valid in this case. ACPICA BZ 1069.
3024 ----------------------------------------
3025 24 April 2014. Summary of changes for version 20140424:
3027 1) ACPICA kernel-resident subsystem:
3029 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
3030 Some of these tables are known to contain a trailing NULL entry. Lv
3033 Removed an extraneous error message for the case where there are a large
3034 number of system GPEs (> 124). This was the "32-bit FADT register is too
3035 long to convert to GAS struct" message, which is irrelevant for GPEs
3036 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
3037 (limited capacity) GAS bit length. Also, several changes to ensure proper
3038 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
3041 Implemented and deployed additional configuration support for the public
3042 ACPICA external interfaces. Entire classes of interfaces can now be
3043 easily modified or configured out, replaced by stubbed inline functions
3044 by default. Lv Zheng.
3046 Moved all public ACPICA runtime configuration globals to the public
3047 ACPICA external interface file for convenience. Also, removed some
3048 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
3050 Documentation: Added a new section to the ACPICA reference describing the
3051 maximum number of GPEs that can be supported by the FADT-defined GPEs in
3052 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
3055 Example Code and Data Size: These are the sizes for the OS-independent
3056 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3057 debug version of the code includes the debug output trace mechanism and
3058 has a much larger code and data size.
3061 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
3062 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
3064 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
3065 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
3068 2) iASL Compiler/Disassembler and Tools:
3070 iASL and disassembler: Add full support for the LPIT table (Low Power
3071 Idle Table). Includes support in the disassembler, data table compiler,
3072 and template generator.
3075 1) Add option to force the use of the RSDT (over the XSDT).
3076 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
3078 iASL: Add check for predefined packages that are too large. For
3079 predefined names that contain subpackages, check if each subpackage is
3080 too large. (Check for too small already exists.)
3082 Debugger: Updated the GPE command (which simulates a GPE by executing the
3083 GPE code paths in ACPICA). The GPE device is now optional, and defaults
3084 to the GPE 0/1 FADT-defined blocks.
3086 Unix application OSL: Update line-editing support. Add additional error
3087 checking and take care not to reset terminal attributes on exit if they
3088 were never set. This should help guarantee that the terminal is always
3089 left in the previous state on program exit.
3092 ----------------------------------------
3093 25 March 2014. Summary of changes for version 20140325:
3095 1) ACPICA kernel-resident subsystem:
3097 Updated the auto-serialize feature for control methods. This feature
3098 automatically serializes all methods that create named objects in order
3099 to prevent runtime errors. The update adds support to ignore the
3100 currently executing AML SyncLevel when invoking such a method, in order
3101 to prevent disruption of any existing SyncLevel priorities that may exist
3102 in the AML code. Although the use of SyncLevels is relatively rare, this
3103 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
3104 appear on some machines starting with the 20140214 release.
3106 Added a new external interface to allow the host to install ACPI tables
3107 very early, before the namespace is even created. AcpiInstallTable gives
3108 the host additional flexibility for ACPI table management. Tables can be
3109 installed directly by the host as if they had originally appeared in the
3110 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
3111 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
3112 with additional internal restructuring and cleanup. See the ACPICA
3113 Reference for interface details. Lv Zheng.
3115 Added validation of the checksum for all incoming dynamically loaded
3116 tables (via external interfaces or via AML Load/LoadTable operators). Lv
3119 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
3120 and GPE handler removal. Restructured calls to eliminate possible race
3121 conditions. Lv Zheng.
3123 Added a warning for the use/execution of the ASL/AML Unload (table)
3124 operator. This will help detect and identify machines that use this
3125 operator if and when it is ever used. This operator has never been seen
3126 in the field and the usage model and possible side-effects of the drastic
3127 runtime action of a full table removal are unknown.
3129 Reverted the use of #pragma push/pop which was introduced in the 20140214
3130 release. It appears that push and pop are not implemented by enough
3131 compilers to make the use of this feature feasible for ACPICA at this
3132 time. However, these operators may be deployed in a future ACPICA
3135 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
3138 Source code generation:
3139 1) Disabled the use of the "strchr" macro for the gcc-specific
3140 generation. For some versions of gcc, this macro can periodically expose
3141 a compiler bug which in turn causes compile-time error(s).
3142 2) Added support for PPC64 compilation. Colin Ian King.
3144 Example Code and Data Size: These are the sizes for the OS-independent
3145 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3146 debug version of the code includes the debug output trace mechanism and
3147 has a much larger code and data size.
3150 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
3151 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
3153 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
3154 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
3157 2) iASL Compiler/Disassembler and Tools:
3159 Disassembler: Added several new features to improve the readability of
3160 the resulting ASL code. Extra information is emitted within comment
3161 fields in the ASL code:
3162 1) Known _HID/_CID values are decoded to descriptive text.
3163 2) Standard values for the Notify() operator are decoded to descriptive
3165 3) Target operands are expanded to full pathnames (in a comment) when
3168 Disassembler: Miscellaneous updates for extern() handling:
3169 1) Abort compiler if file specified by -fe option does not exist.
3170 2) Silence unnecessary warnings about argument count mismatches.
3171 3) Update warning messages concerning unresolved method externals.
3172 4) Emit "UnknownObj" keyword for externals whose type cannot be
3176 1) Added the -a option to display both the ASL syntax and the AML
3177 encoding for an input ASL operator. This effectively displays all known
3178 information about an ASL operator with one AcpiHelp invocation.
3179 2) Added substring match support (similar to a wildcard) for the -i
3180 (_HID/PNP IDs) option.
3182 iASL/Disassembler: Since this tool does not yet support execution on big-
3183 endian machines, added detection of endianness and an error message if
3184 execution is attempted on big-endian. Support for big-endian within iASL
3185 is a feature that is on the ACPICA to-be-done list.
3188 1) Remove option to extract binary files from an acpidump; this function
3189 is made obsolete by the AcpiXtract utility.
3190 2) General cleanup of open files and allocated buffers.
3193 ----------------------------------------
3194 14 February 2014. Summary of changes for version 20140214:
3196 1) ACPICA kernel-resident subsystem:
3198 Implemented a new mechanism to proactively prevent problems with ill-
3199 behaved reentrant control methods that create named ACPI objects. This
3200 behavior is illegal as per the ACPI specification, but is nonetheless
3201 frequently seen in the field. Previously, this could lead to an
3202 AE_ALREADY_EXISTS exception if the method was actually entered by more
3203 than one thread. This new mechanism detects such methods at table load
3204 time and marks them "serialized" to prevent reentrancy. A new global
3205 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
3206 feature if desired. This mechanism and global option obsoletes and
3207 supersedes the previous AcpiGbl_SerializeAllMethods option.
3209 Added the "Windows 2013" string to the _OSI support. ACPICA will now
3210 respond TRUE to _OSI queries with this string. It is the stated policy of
3211 ACPICA to add new strings to the _OSI support as soon as possible after
3212 they are defined. See the full ACPICA _OSI policy which has been added to
3213 the utilities/utosi.c file.
3215 Hardened/updated the _PRT return value auto-repair code:
3216 1) Do not abort the repair on a single subpackage failure, continue to
3217 check all subpackages.
3218 2) Add check for the minimum subpackage length (4).
3219 3) Properly handle extraneous NULL package elements.
3221 Added support to avoid the possibility of infinite loops when traversing
3222 object linked lists. Never allow an infinite loop, even in the face of
3223 corrupted object lists.
3225 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
3226 pack(pop) directives to ensure that the ACPICA headers are independent of
3227 compiler settings or other host headers.
3229 Example Code and Data Size: These are the sizes for the OS-independent
3230 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3231 debug version of the code includes the debug output trace mechanism and
3232 has a much larger code and data size.
3235 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
3236 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
3238 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3239 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3242 2) iASL Compiler/Disassembler and Tools:
3244 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
3245 first reserved field was incorrectly forced to have a value of zero. This
3246 change correctly forces the field to have a value of one. ACPICA BZ 1081.
3248 Debugger: Added missing support for the "Extra" and "Data" subobjects
3249 when displaying object data.
3251 Debugger: Added support to display entire object linked lists when
3252 displaying object data.
3254 iASL: Removed the obsolete -g option to obtain ACPI tables from the
3255 Windows registry. This feature has been superseded by the acpidump
3259 ----------------------------------------
3260 14 January 2014. Summary of changes for version 20140114:
3262 1) ACPICA kernel-resident subsystem:
3264 Updated all ACPICA copyrights and signons to 2014. Added the 2014
3265 copyright to all module headers and signons, including the standard Linux
3266 header. This affects virtually every file in the ACPICA core subsystem,
3267 iASL compiler, all ACPICA utilities, and the test suites.
3269 Improved parameter validation for AcpiInstallGpeBlock. Added the
3271 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
3272 2) There is not already a GPE block attached to the device.
3273 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
3276 Correctly support "references" in the ACPI_OBJECT. This change fixes the
3277 support to allow references (namespace nodes) to be passed as arguments
3278 to control methods via the evaluate object interface. This is probably
3279 most useful for testing purposes, however.
3281 Improved support for 32/64 bit physical addresses in printf()-like
3282 output. This change improves the support for physical addresses in printf
3283 debug statements and other output on both 32-bit and 64-bit hosts. It
3284 consistently outputs the appropriate number of bytes for each host. The
3285 %p specifier is unsatisfactory since it does not emit uniform output on
3286 all hosts/clib implementations (on some, leading zeros are not supported,
3287 leading to difficult-to-read output).
3289 Example Code and Data Size: These are the sizes for the OS-independent
3290 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3291 debug version of the code includes the debug output trace mechanism and
3292 has a much larger code and data size.
3295 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3296 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3298 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3299 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3302 2) iASL Compiler/Disassembler and Tools:
3304 iASL: Fix a possible fault when using the Connection() operator. Fixes a
3305 problem if the parent Field definition for the Connection operator refers
3306 to an operation region that does not exist. ACPICA BZ 1064.
3308 AcpiExec: Load of local test tables is now optional. The utility has the
3309 capability to load some various tables to test features of ACPICA.
3310 However, there are enough of them that the output of the utility became
3311 confusing. With this change, only the required local tables are displayed
3312 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
3313 line specification. This makes the default output simler and easier to
3314 understand. The -el command line option restores the original behavior
3315 for testing purposes.
3317 AcpiExec: Added support for overlapping operation regions. This change
3318 expands the simulation of operation regions by supporting regions that
3319 overlap within the given address space. Supports SystemMemory and
3320 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
3322 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
3323 allows AcpiExec to simulate these address spaces, similar to the current
3324 support for SystemMemory and SystemIO.
3326 Debugger: Added new command to read/write/compare all namespace objects.
3327 The command "test objects" will exercise the entire namespace by writing
3328 new values to each data object, and ensuring that the write was
3329 successful. The original value is then restored and verified.
3331 Debugger: Added the "test predefined" command. This change makes this
3332 test public and puts it under the new "test" command. The test executes
3333 each and every predefined name within the current namespace.
3336 ----------------------------------------
3337 18 December 2013. Summary of changes for version 20131218:
3339 Global note: The ACPI 5.0A specification was released this month. There
3340 are no changes needed for ACPICA since this release of ACPI is an
3341 errata/clarification release. The specification is available at
3345 1) ACPICA kernel-resident subsystem:
3347 Added validation of the XSDT root table if it is present. Some older
3348 platforms contain an XSDT that is ill-formed or otherwise invalid (such
3349 as containing some or all entries that are NULL pointers). This change
3350 adds a new function to validate the XSDT before actually using it. If the
3351 XSDT is found to be invalid, ACPICA will now automatically fall back to
3352 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
3353 ACPICA and enhanced by Lv Zheng and Bob Moore.
3355 Added a runtime option to ignore the XSDT and force the use of the RSDT.
3356 This change adds a runtime option that will force ACPICA to use the RSDT
3357 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
3358 requires that an XSDT be used instead of the RSDT, the XSDT has been
3359 found to be corrupt or ill-formed on some machines. Lv Zheng.
3361 Added a runtime option to favor 32-bit FADT register addresses over the
3362 64-bit addresses. This change adds an option to favor 32-bit FADT
3363 addresses when there is a conflict between the 32-bit and 64-bit versions
3364 of the same register. The default behavior is to use the 64-bit version
3365 in accordance with the ACPI specification. This can now be overridden via
3366 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
3368 During the change above, the internal "Convert FADT" and "Verify FADT"
3369 functions have been merged to simplify the code, making it easier to
3370 understand and maintain. ACPICA BZ 933.
3372 Improve exception reporting and handling for GPE block installation.
3373 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
3374 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
3376 Added helper macros to extract bus/segment numbers from the HEST table.
3377 This change adds two macros to extract the encoded bus and segment
3378 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
3379 Betty Dall <betty.dall@hp.com>
3381 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
3382 by ACPICA. It is not a public macro, so it should have no effect on
3383 existing OSV code. Lv Zheng.
3385 Example Code and Data Size: These are the sizes for the OS-independent
3386 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3387 debug version of the code includes the debug output trace mechanism and
3388 has a much larger code and data size.
3391 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3392 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3394 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3395 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3398 2) iASL Compiler/Disassembler and Tools:
3400 Disassembler: Improved pathname support for emitted External()
3401 statements. This change adds full pathname support for external names
3402 that have been resolved internally by the inclusion of additional ACPI
3403 tables (via the iASL -e option). Without this change, the disassembler
3404 can emit multiple externals for the same object, or it become confused
3405 when the Scope() operator is used on an external object. Overall, greatly
3406 improves the ability to actually recompile the emitted ASL code when
3407 objects a referenced across multiple ACPI tables. Reported by Michael
3408 Tsirkin (mst@redhat.com).
3410 Tests/ASLTS: Updated functional control suite to execute with no errors.
3411 David Box. Fixed several errors related to the testing of the interpreter
3412 slack mode. Lv Zheng.
3414 iASL: Added support to detect names that are declared within a control
3415 method, but are unused (these are temporary names that are only valid
3416 during the time the method is executing). A remark is issued for these
3417 cases. ACPICA BZ 1022.
3419 iASL: Added full support for the DBG2 table. Adds full disassembler,
3420 table compiler, and template generator support for the DBG2 table (Debug
3423 iASL: Added full support for the PCCT table, update the table definition.
3424 Updates the PCCT table definition in the actbl3.h header and adds table
3425 compiler and template generator support.
3427 iASL: Added an option to emit only error messages (no warnings/remarks).
3428 The -ve option will enable only error messages, warnings and remarks are
3429 suppressed. This can simplify debugging when only the errors are
3430 important, such as when an ACPI table is disassembled and there are many
3431 warnings and remarks -- but only the actual errors are of real interest.
3433 Example ACPICA code (source/tools/examples): Updated the example code so
3434 that it builds to an actual working program, not just example code. Added
3435 ACPI tables and execution of an example control method in the DSDT. Added
3436 makefile support for Unix generation.
3439 ----------------------------------------
3440 15 November 2013. Summary of changes for version 20131115:
3442 This release is available at https://acpica.org/downloads
3445 1) ACPICA kernel-resident subsystem:
3447 Resource Manager: Fixed loop termination for the "get AML length"
3448 function. The loop previously had an error termination on a NULL resource
3449 pointer, which can never happen since the loop simply increments a valid
3450 resource pointer. This fix changes the loop to terminate with an error on
3451 an invalid end-of-buffer condition. The problem can be seen as an
3452 infinite loop by callers to AcpiSetCurrentResources with an invalid or
3453 corrupted resource descriptor, or a resource descriptor that is missing
3454 an END_TAG descriptor. Reported by Dan Carpenter
3455 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
3457 Table unload and ACPICA termination: Delete all attached data objects
3458 during namespace node deletion. This fix updates namespace node deletion
3459 to delete the entire list of attached objects (attached via
3460 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
3461 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
3463 ACPICA termination: Added support to delete all objects attached to the
3464 root namespace node. This fix deletes any and all objects that have been
3465 attached to the root node via AcpiAttachData. Previously, none of these
3466 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
3468 Debug output: Do not emit the function nesting level for the in-kernel
3469 build. The nesting level is really only useful during a single-thread
3470 execution. Therefore, only enable this output for the AcpiExec utility.
3471 Also, only emit the thread ID when executing under AcpiExec (Context
3472 switches are still always detected and a message is emitted). ACPICA BZ
3475 Example Code and Data Size: These are the sizes for the OS-independent
3476 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3477 debug version of the code includes the debug output trace mechanism and
3478 has a much larger code and data size.
3481 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3482 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3484 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3485 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3488 2) iASL Compiler/Disassembler and Tools:
3490 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
3491 correct portable POSIX header for terminal control functions.
3493 Disassembler: Fixed control method invocation issues related to the use
3494 of the CondRefOf() operator. The problem is seen in the disassembly where
3495 control method invocations may not be disassembled properly if the
3496 control method name has been used previously as an argument to CondRefOf.
3497 The solution is to not attempt to emit an external declaration for the
3498 CondRefOf target (it is not necessary in the first place). This prevents
3499 disassembler object type confusion. ACPICA BZ 988.
3501 Unix Makefiles: Added an option to disable compiler optimizations and the
3502 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
3503 with optimizations (reportedly, gcc 4.4 for example). This change adds a
3504 command line option for make (NOOPT) that disables all compiler
3505 optimizations and the _FORTIFY_SOURCE compiler flag. The default
3506 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
3507 1034. Lv Zheng, Bob Moore.
3509 Tests/ASLTS: Added options to specify individual test cases and modes.
3510 This allows testers running aslts.sh to optionally specify individual
3511 test modes and test cases. Also added an option to disable the forced
3512 generation of the ACPICA tools from source if desired. Lv Zheng.
3514 ----------------------------------------
3515 27 September 2013. Summary of changes for version 20130927:
3517 This release is available at https://acpica.org/downloads
3520 1) ACPICA kernel-resident subsystem:
3522 Fixed a problem with store operations to reference objects. This change
3523 fixes a problem where a Store operation to an ArgX object that contained
3525 reference to a field object did not complete the automatic dereference
3527 then write to the actual field object. Instead, the object type of the
3528 field object was inadvertently changed to match the type of the source
3529 operand. The new behavior will actually write to the field object (buffer
3530 field or field unit), thus matching the correct ACPI-defined behavior.
3532 Implemented support to allow the host to redefine individual OSL
3533 prototypes. This change enables the host to redefine OSL prototypes found
3534 in the acpiosxf.h file. This allows the host to implement OSL interfaces
3535 with a macro or inlined function. Further, it allows the host to add any
3536 additional required modifiers such as __iomem, __init, __exit, etc., as
3537 necessary on a per-interface basis. Enables maximum flexibility for the
3538 OSL interfaces. Lv Zheng.
3540 Hardcoded the access width for the FADT-defined reset register. The ACPI
3541 specification requires the reset register width to be 8 bits. ACPICA now
3542 hardcodes the width to 8 and ignores the FADT width value. This provides
3543 compatibility with other ACPI implementations that have allowed BIOS code
3544 with bad register width values to go unnoticed. Matthew Garett, Bob
3548 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
3550 in the OSL header (acpiosxf). The change modifies the position of this
3551 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
3552 build issues if the OSL defines the implementation of the interface to be
3553 an inline stub function. Lv Zheng.
3555 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
3556 initialization interfaces. This change adds a new macro for the main init
3557 and terminate external interfaces in order to support hosts that require
3558 additional or different processing for these functions. Changed from
3559 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
3562 Cleaned up the memory allocation macros for configurability. In the
3564 case, the ACPI_ALLOCATE and related macros now resolve directly to their
3565 respective AcpiOs* OSL interfaces. Two options:
3566 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
3567 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
3568 2) For AcpiExec (and for debugging), the macros can optionally be
3570 to the local ACPICA interfaces that track each allocation (local tracking
3571 is used to immediately detect memory leaks).
3574 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
3575 to predefine this macro to either TRUE or FALSE during the system build.
3577 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
3579 Example Code and Data Size: These are the sizes for the OS-independent
3580 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3581 debug version of the code includes the debug output trace mechanism and
3582 has a much larger code and data size.
3585 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3586 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3588 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3589 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3592 2) iASL Compiler/Disassembler and Tools:
3594 iASL: Implemented wildcard support for the -e option. This simplifies use
3595 when there are many SSDTs that must be included to resolve external
3597 declarations. ACPICA BZ 1041. Example:
3598 iasl -e ssdt*.dat -d dsdt.dat
3600 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3601 adds a portable module that implements full history and limited line
3602 editing for Unix and Linux systems. It does not use readline() due to
3603 portability issues. Instead it uses the POSIX termio interface to put the
3604 terminal in raw input mode so that the various special keys can be
3606 (such as up/down-arrow for history support and left/right-arrow for line
3607 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3609 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3610 one or more spaces. This provides compatible with early or different
3611 versions of the AcpiDump utility. ACPICA BZ 1044.
3613 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3614 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3615 no other data. This change adds support to dump these tables. Any tables
3616 shorter than the length of an ACPI table header remain in error (an error
3617 message is emitted). Reported by Yi Li.
3619 Debugger: Echo actual command along with the "unknown command" message.
3621 ----------------------------------------
3622 23 August 2013. Summary of changes for version 20130823:
3624 1) ACPICA kernel-resident subsystem:
3626 Implemented support for host-installed System Control Interrupt (SCI)
3627 handlers. Certain ACPI functionality requires the host to handle raw
3628 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3629 state support requires the host device driver to handle SCIs to examine
3630 if the doorbell has been activated. Multiple SCI handlers can be
3631 installed to allow for future expansion. New external interfaces are
3632 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3633 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3635 Operation region support: Never locally free the handler "context"
3636 pointer. This change removes some dangerous code that attempts to free
3637 the handler context pointer in some (rare) circumstances. The owner of
3638 the handler owns this pointer and the ACPICA code should never touch it.
3639 Although not seen to be an issue in any kernel, it did show up as a
3640 problem (fault) under AcpiExec. Also, set the internal storage field for
3641 the context pointer to zero when the region is deactivated, simply for
3642 sanity. David Box. ACPICA BZ 1039.
3644 AcpiRead: On error, do not modify the return value target location. If an
3645 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3646 modify the target of the return value pointer. Makes the code consistent
3647 with the rest of ACPICA. Bjorn Helgaas.
3649 Example Code and Data Size: These are the sizes for the OS-independent
3650 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3651 debug version of the code includes the debug output trace mechanism and
3652 has a much larger code and data size.
3655 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3656 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3658 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3659 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3662 2) iASL Compiler/Disassembler and Tools:
3664 AcpiDump: Implemented several new features and fixed some problems:
3665 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3666 2) Added support for multiple table instances (SSDT, UEFI).
3667 3) Added option to dump "customized" (overridden) tables (-c).
3668 4) Fixed a problem where some table filenames were improperly
3670 5) Improved some error messages, removed some unnecessary messages.
3672 iASL: Implemented additional support for disassembly of ACPI tables that
3673 contain invocations of external control methods. The -fe<file> option
3674 allows the import of a file that specifies the external methods along
3675 with the required number of arguments for each -- allowing for the
3676 correct disassembly of the table. This is a workaround for a limitation
3677 of AML code where the disassembler often cannot determine the number of
3678 arguments required for an external control method and generates incorrect
3679 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3681 Debugger: Implemented a new command (paths) that displays the full
3682 pathnames (namepaths) and object types of all objects in the namespace.
3683 This is an alternative to the namespace command.
3685 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3686 mechanism and any installed handlers.
3688 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3689 This can occur if there are too many parent prefixes in a namepath (for
3690 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3692 Application OSLs: Set the return value for the PCI read functions. These
3693 functions simply return AE_OK, but should set the return value to zero
3694 also. This change implements this. ACPICA BZ 1038.
3696 Debugger: Prevent possible command line buffer overflow. Increase the
3697 size of a couple of the debugger line buffers, and ensure that overflow
3698 cannot happen. ACPICA BZ 1037.
3700 iASL: Changed to abort immediately on serious errors during the parsing
3701 phase. Due to the nature of ASL, there is no point in attempting to
3702 compile these types of errors, and they typically end up causing a
3703 cascade of hundreds of errors which obscure the original problem.
3705 ----------------------------------------
3706 25 July 2013. Summary of changes for version 20130725:
3708 1) ACPICA kernel-resident subsystem:
3710 Fixed a problem with the DerefOf operator where references to FieldUnits
3711 and BufferFields incorrectly returned the parent object, not the actual
3712 value of the object. After this change, a dereference of a FieldUnit
3713 reference results in a read operation on the field to get the value, and
3714 likewise, the appropriate BufferField value is extracted from the target
3717 Fixed a problem where the _WAK method could cause a fault under these
3718 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3719 method returned no value. The problem is rarely seen because most kernels
3720 run ACPICA in slack mode.
3722 For the DerefOf operator, a fatal error now results if an attempt is made
3723 to dereference a reference (created by the Index operator) to a NULL
3724 package element. Provides compatibility with other ACPI implementations,
3725 and this behavior will be added to a future version of the ACPI
3728 The ACPI Power Management Timer (defined in the FADT) is now optional.
3729 This provides compatibility with other ACPI implementations and will
3730 appear in the next version of the ACPI specification. If there is no PM
3731 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3732 zero in the FADT indicates no PM timer.
3734 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3735 allows the host to globally enable/disable all vendor strings, all
3736 feature strings, or both. Intended to be primarily used for debugging
3737 purposes only. Lv Zheng.
3739 Expose the collected _OSI data to the host via a global variable. This
3740 data tracks the highest level vendor ID that has been invoked by the BIOS
3741 so that the host (and potentially ACPICA itself) can change behaviors
3742 based upon the age of the BIOS.
3744 Example Code and Data Size: These are the sizes for the OS-independent
3745 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3746 debug version of the code includes the debug output trace mechanism and
3747 has a much larger code and data size.
3750 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3751 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3753 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3754 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3757 2) iASL Compiler/Disassembler and Tools:
3759 iASL: Created the following enhancements for the -so option (create
3761 1)Add offsets for the last nameseg in each namepath for every supported
3763 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3764 3)Add the actual AML opcode for the parent object of every supported
3766 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3768 Disassembler: Emit all unresolved external symbols in a single block.
3769 These are external references to control methods that could not be
3770 resolved, and thus, the disassembler had to make a guess at the number of
3773 iASL: The argument to the -T option (create table template) is now
3774 optional. If not specified, the default table is a DSDT, typically the
3777 ----------------------------------------
3778 26 June 2013. Summary of changes for version 20130626:
3780 1) ACPICA kernel-resident subsystem:
3782 Fixed an issue with runtime repair of the _CST object. Null or invalid
3783 elements were not always removed properly. Lv Zheng.
3785 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3786 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3787 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3788 makes the system-wide number of GPEs essentially unlimited.
3790 Example Code and Data Size: These are the sizes for the OS-independent
3791 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3792 debug version of the code includes the debug output trace mechanism and
3793 has a much larger code and data size.
3796 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3797 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3799 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3800 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3803 2) iASL Compiler/Disassembler and Tools:
3805 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3806 hosts. Now supports Linux, FreeBSD, and Windows.
3808 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3809 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3811 iASL/Preprocessor: Implemented full support for nested
3812 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3814 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3815 max. The original purpose of this constraint was to limit the amount of
3816 debug output. However, the string function in question (UtPrintString) is
3817 now used for the disassembler also, where 256 bytes is insufficient.
3818 Reported by RehabMan@GitHub.
3820 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3821 tables. ACPICA BZ 999. Lv Zheng.
3823 iASL: Fixed a couple of error exit issues that could result in a "Could
3824 not delete <file>" message during ASL compilation.
3826 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3827 the actual signatures for these tables are "FACP" and "APIC",
3830 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3831 tables are allowed to have multiple instances.
3833 ----------------------------------------
3834 17 May 2013. Summary of changes for version 20130517:
3836 1) ACPICA kernel-resident subsystem:
3838 Fixed a regression introduced in version 20130328 for _INI methods. This
3839 change fixes a problem introduced in 20130328 where _INI methods are no
3840 longer executed properly because of a memory block that was not
3841 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3842 <tomasz.nowicki@linaro.org>.
3844 Fixed a possible problem with the new extended sleep registers in the
3846 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3847 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3850 Implemented return value repair code for _CST predefined objects: Sort
3852 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3854 Implemented a debug-only option to disable loading of SSDTs from the
3855 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3856 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3857 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3859 Fixed some issues in the ACPICA initialization and termination code:
3860 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3861 1) Clear events initialized flag upon event component termination. ACPICA
3863 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3864 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3865 4) Clear debug buffer global on termination to prevent possible multiple
3866 delete. ACPICA BZ 1010.
3868 Standardized all switch() blocks across the entire source base. After
3870 years, different formatting for switch() had crept in. This change makes
3871 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3873 Split some files to enhance ACPICA modularity and configurability:
3874 1) Split buffer dump routines into utilities/utbuffer.c
3875 2) Split internal error message routines into utilities/uterror.c
3876 3) Split table print utilities into tables/tbprint.c
3877 4) Split iASL command-line option processing into asloptions.c
3879 Makefile enhancements:
3880 1) Support for all new files above.
3881 2) Abort make on errors from any subcomponent. Chao Guan.
3882 3) Add build support for Apple Mac OS X. Liang Qi.
3884 Example Code and Data Size: These are the sizes for the OS-independent
3885 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3886 debug version of the code includes the debug output trace mechanism and
3887 has a much larger code and data size.
3890 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3891 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3893 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3894 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3897 2) iASL Compiler/Disassembler and Tools:
3899 New utility: Implemented an easily portable version of the acpidump
3900 utility to extract ACPI tables from the system (or a file) in an ASCII
3902 dump format. The top-level code implements the various command line
3903 options, file I/O, and table dump routines. To port to a new host, only
3904 three functions need to be implemented to get tables -- since this
3905 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3906 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3907 1) The Windows version obtains the ACPI tables from the Registry.
3908 2) The Linux version is under development.
3909 3) Other hosts - If an OS-dependent module is submitted, it will be
3910 distributed with ACPICA.
3912 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3913 restructuring/change to the initialization sequence caused this option to
3914 no longer work properly.
3916 iASL: Implemented a mechanism to disable specific warnings and remarks.
3917 Adds a new command line option, "-vw <messageid> as well as "#pragma
3918 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3920 iASL: Fix for too-strict package object validation. The package object
3921 validation for return values from the predefined names is a bit too
3922 strict, it does not allow names references within the package (which will
3923 be resolved at runtime.) These types of references cannot be validated at
3924 compile time. This change ignores named references within package objects
3925 for names that return or define static packages.
3927 Debugger: Fixed the 80-character command line limitation for the History
3928 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3930 iASL: Added control method and package support for the -so option
3931 (generates AML offset table for BIOS support.)
3933 iASL: issue a remark if a non-serialized method creates named objects. If
3934 a thread blocks within the method for any reason, and another thread
3935 enters the method, the method will fail because an attempt will be made
3937 create the same (named) object twice. In this case, issue a remark that
3938 the method should be marked serialized. NOTE: may become a warning later.
3941 ----------------------------------------
3942 18 April 2013. Summary of changes for version 20130418:
3944 1) ACPICA kernel-resident subsystem:
3946 Fixed a possible buffer overrun during some rare but specific field unit
3947 read operations. This overrun can only happen if the DSDT version is 1 --
3948 meaning that all AML integers are 32 bits -- and the field length is
3949 between 33 and 55 bits long. During the read, an internal buffer object
3951 created for the field unit because the field is larger than an integer
3953 bits). However, in this case, the buffer will be incorrectly written
3954 beyond the end because the buffer length is less than the internal
3956 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3957 long, but a full 8 bytes will be written.
3959 Updated the Embedded Controller "orphan" _REG method support. This refers
3960 to _REG methods under the EC device that have no corresponding operation
3961 region. This is allowed by the ACPI specification. This update removes a
3962 dependency on the existence an ECDT table. It will execute an orphan _REG
3963 method as long as the operation region handler for the EC is installed at
3964 the EC device node and not the namespace root. Rui Zhang (original
3965 update), Bob Moore (update/integrate).
3967 Implemented run-time argument typechecking for all predefined ACPI names
3968 (_STA, _BIF, etc.) This change performs object typechecking on all
3969 incoming arguments for all predefined names executed via
3970 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3971 passing correct object types as well as the correct number of arguments
3972 (therefore identifying any issues immediately). Also, the ASL/namespace
3973 definition of the predefined name is checked against the ACPI
3974 specification for the proper argument count. Adds one new file,
3977 Changed an exception code for the ASL UnLoad() operator. Changed the
3978 exception code for the case where the input DdbHandle is invalid, from
3979 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3981 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3982 global makefile. The use of this flag causes compiler errors on earlier
3983 versions of GCC, so it has been removed for compatibility.
3985 Miscellaneous cleanup:
3986 1) Removed some unused/obsolete macros
3987 2) Fixed a possible memory leak in the _OSI support
3988 3) Removed an unused variable in the predefined name support
3989 4) Windows OSL: remove obsolete reference to a memory list field
3991 Example Code and Data Size: These are the sizes for the OS-independent
3992 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3993 debug version of the code includes the debug output trace mechanism and
3994 has a much larger code and data size.
3997 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3998 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
4000 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
4001 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
4004 2) iASL Compiler/Disassembler and Tools:
4006 AcpiExec: Added installation of a handler for the SystemCMOS address
4007 space. This prevents control method abort if a method accesses this
4010 AcpiExec: Added support for multiple EC devices, and now install EC
4011 operation region handler(s) at the actual EC device instead of the
4012 namespace root. This reflects the typical behavior of host operating
4015 AcpiExec: Updated to ensure that all operation region handlers are
4016 installed before the _REG methods are executed. This prevents a _REG
4017 method from aborting if it accesses an address space has no handler.
4018 AcpiExec installs a handler for every possible address space.
4020 Debugger: Enhanced the "handlers" command to display non-root handlers.
4021 This change enhances the handlers command to display handlers associated
4022 with individual devices throughout the namespace, in addition to the
4023 currently supported display of handlers associated with the root
4027 ASL Test Suite: Several test suite errors have been identified and
4028 resolved, reducing the total error count during execution. Chao Guan.
4030 ----------------------------------------
4031 28 March 2013. Summary of changes for version 20130328:
4033 1) ACPICA kernel-resident subsystem:
4035 Fixed several possible race conditions with the internal object reference
4036 counting mechanism. Some of the external ACPICA interfaces update object
4037 reference counts without holding the interpreter or namespace lock. This
4038 change adds a spinlock to protect reference count updates on the internal
4039 ACPICA objects. Reported by and with assistance from Andriy Gapon
4042 FADT support: Removed an extraneous warning for very large GPE register
4043 sets. This change removes a size mismatch warning if the legacy length
4044 field for a GPE register set is larger than the 64-bit GAS structure can
4045 accommodate. GPE register sets can be larger than the 255-bit width
4046 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
4048 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
4049 return from this interface. Handles a possible timeout case if
4050 ACPI_WAIT_FOREVER is modified by the host to be a value less than
4051 "forever". Jung-uk Kim.
4053 Predefined name support: Add allowed/required argument type information
4055 the master predefined info table. This change adds the infrastructure to
4056 enable typechecking on incoming arguments for all predefined
4057 methods/objects. It does not actually contain the code that will fully
4058 utilize this information, this is still under development. Also condenses
4059 some duplicate code for the predefined names into a new module,
4060 utilities/utpredef.c
4062 Example Code and Data Size: These are the sizes for the OS-independent
4063 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4064 debug version of the code includes the debug output trace mechanism and
4065 has a much larger code and data size.
4068 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
4069 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
4071 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
4072 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
4075 2) iASL Compiler/Disassembler and Tools:
4077 iASL: Implemented a new option to simplify the development of ACPI-
4079 BIOS code. Adds support for a new "offset table" output file. The -so
4080 option will create a C table containing the AML table offsets of various
4081 named objects in the namespace so that BIOS code can modify them easily
4083 boot time. This can simplify BIOS runtime code by eliminating expensive
4084 searches for "magic values", enhancing boot times and adding greater
4085 reliability. With assistance from Lee Hamel.
4087 iASL: Allow additional predefined names to return zero-length packages.
4088 Now, all predefined names that are defined by the ACPI specification to
4089 return a "variable-length package of packages" are allowed to return a
4090 zero length top-level package. This allows the BIOS to tell the host that
4091 the requested feature is not supported, and supports existing BIOS/ASL
4094 iASL: Changed the "result not used" warning to an error. This is the case
4095 where an ASL operator is effectively a NOOP because the result of the
4096 operation is not stored anywhere. For example:
4098 There is no target (missing 3rd argument), nor is the function return
4099 value used. This is potentially a very serious problem -- since the code
4100 was probably intended to do something, but for whatever reason, the value
4101 was not stored. Therefore, this issue has been upgraded from a warning to
4104 AcpiHelp: Added allowable/required argument types to the predefined names
4105 info display. This feature utilizes the recent update to the predefined
4106 names table (above).
4108 ----------------------------------------
4109 14 February 2013. Summary of changes for version 20130214:
4111 1) ACPICA Kernel-resident Subsystem:
4113 Fixed a possible regression on some hosts: Reinstated the safe return
4114 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
4115 evaluated only once. Although these macros are not needed for the ACPICA
4116 code itself, they are often used by ACPI-related host device drivers
4118 the safe feature may be necessary.
4120 Fixed several issues related to the ACPI 5.0 reduced hardware support
4121 (SOC): Now ensure that if the platform declares itself as hardware-
4123 via the FADT, the following functions become NOOPs (and always return
4124 AE_OK) because ACPI is always enabled by definition on these machines:
4130 Dynamic Object Repair: Implemented additional runtime repairs for
4131 predefined name return values. Both of these repairs can simplify code in
4132 the related device drivers that invoke these methods:
4133 1) For the _STR and _MLS names, automatically repair/convert an ASCII
4134 string to a Unicode buffer.
4135 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
4137 lone end tag descriptor in the following cases: A Return(0) was executed,
4138 a null buffer was returned, or no object at all was returned (non-slack
4139 mode only). Adds a new file, nsconvert.c
4140 ACPICA BZ 998. Bob Moore, Lv Zheng.
4142 Resource Manager: Added additional code to prevent possible infinite
4144 while traversing corrupted or ill-formed resource template buffers. Check
4145 for zero-length resource descriptors in all code that loops through
4146 resource templates (the length field is used to index through the
4147 template). This change also hardens the external AcpiWalkResources and
4148 AcpiWalkResourceBuffer interfaces.
4150 Local Cache Manager: Enhanced the main data structure to eliminate an
4151 unnecessary mechanism to access the next object in the list. Actually
4152 provides a small performance enhancement for hosts that use the local
4153 ACPICA cache manager. Jung-uk Kim.
4155 Example Code and Data Size: These are the sizes for the OS-independent
4156 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4157 debug version of the code includes the debug output trace mechanism and
4158 has a much larger code and data size.
4161 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
4162 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
4164 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
4165 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
4168 2) iASL Compiler/Disassembler and Tools:
4170 iASL/Disassembler: Fixed several issues with the definition of the ACPI
4171 5.0 RASF table (RAS Feature Table). This change incorporates late changes
4172 that were made to the ACPI 5.0 specification.
4174 iASL/Disassembler: Added full support for the following new ACPI tables:
4175 1) The MTMR table (MID Timer Table)
4176 2) The VRTC table (Virtual Real Time Clock Table).
4177 Includes header file, disassembler, table compiler, and template support
4180 iASL: Implemented compile-time validation of package objects returned by
4181 predefined names. This new feature validates static package objects
4182 returned by the various predefined names defined to return packages. Both
4183 object types and package lengths are validated, for both parent packages
4184 and sub-packages, if any. The code is similar in structure and behavior
4186 the runtime repair mechanism within the AML interpreter and uses the
4187 existing predefined name information table. Adds a new file, aslprepkg.c.
4190 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
4191 This feature detects a binary file with a valid ACPI table header and
4192 invokes the disassembler automatically. Eliminates the need to
4193 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
4195 iASL/Disassembler: Added several warnings for the case where there are
4196 unresolved control methods during the disassembly. This can potentially
4197 cause errors when the output file is compiled, because the disassembler
4198 assumes zero method arguments in these cases (it cannot determine the
4199 actual number of arguments without resolution/definition of the method).
4201 Debugger: Added support to display all resources with a single command.
4202 Invocation of the resources command with no arguments will now display
4204 resources within the current namespace.
4206 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
4209 ----------------------------------------
4210 17 January 2013. Summary of changes for version 20130117:
4212 1) ACPICA Kernel-resident Subsystem:
4214 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
4215 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
4216 objects to return a package containing one integer, most BIOS code
4218 two integers and the previous code reflects that. However, we also need
4220 support BIOS code that actually implements to the ACPI spec, and this
4221 change reflects this.
4223 Fixed two issues with the ACPI_DEBUG_PRINT macros:
4224 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
4225 C compilers that require this support.
4226 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
4227 ACPI_DEBUG is already used by many of the various hosts.
4229 Updated all ACPICA copyrights and signons to 2013. Added the 2013
4230 copyright to all module headers and signons, including the standard Linux
4231 header. This affects virtually every file in the ACPICA core subsystem,
4232 iASL compiler, all ACPICA utilities, and the test suites.
4234 Example Code and Data Size: These are the sizes for the OS-independent
4235 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4236 debug version of the code includes the debug output trace mechanism and
4237 has a much larger code and data size.
4240 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4241 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4243 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
4244 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
4247 2) iASL Compiler/Disassembler and Tools:
4249 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
4250 prevent a possible fault on some hosts. Some C libraries modify the arg
4251 pointer parameter to vfprintf making it difficult to call it twice in the
4252 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
4253 does not affect the Windows OSL since the Win C library does not modify
4254 the arg pointer. Chao Guan, Bob Moore.
4256 iASL: Fixed a possible infinite loop when the maximum error count is
4257 reached. If an output file other than the .AML file is specified (such as
4258 a listing file), and the maximum number of errors is reached, do not
4259 attempt to flush data to the output file(s) as the compiler is aborting.
4260 This can cause an infinite loop as the max error count code essentially
4261 keeps calling itself.
4263 iASL/Disassembler: Added an option (-in) to ignore NOOP
4265 Implemented for both the compiler and the disassembler. Often, the NOOP
4266 opcode is used as padding for packages that are changed dynamically by
4268 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
4269 errors. This option causes the disassembler to ignore all NOOP opcodes
4270 (0xA3), and it also causes the compiler to ignore all ASL source code
4274 Debugger: Enhanced the Sleep command to execute all sleep states. This
4275 change allows Sleep to be invoked with no arguments and causes the
4276 debugger to execute all of the sleep states, 0-5, automatically.
4278 ----------------------------------------
4279 20 December 2012. Summary of changes for version 20121220:
4281 1) ACPICA Kernel-resident Subsystem:
4283 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
4284 alternate entry point for AcpiWalkResources and improves the usability of
4285 the resource manager by accepting as input a buffer containing the output
4286 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
4287 input buffer is not deleted by this interface so that it can be used by
4288 the host later. See the ACPICA reference for details.
4290 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
4291 (DSDT version < 2). The constant will be truncated and this warning
4292 reflects that behavior.
4294 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
4295 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
4296 both get and set the new wake bit in these descriptors, separately from
4297 the existing share bit. Reported by Aaron Lu.
4299 Interpreter: Fix Store() when an implicit conversion is not possible. For
4300 example, in the cases such as a store of a string to an existing package
4301 object, implement the store as a CopyObject(). This is a small departure
4302 from the ACPI specification which states that the control method should
4304 aborted in this case. However, the ASLTS suite depends on this behavior.
4306 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
4307 macros: check if debug output is currently enabled as soon as possible to
4308 minimize performance impact if debug is in fact not enabled.
4310 Source code restructuring: Cleanup to improve modularity. The following
4311 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
4312 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
4313 Associated makefiles and project files have been updated.
4315 Changed an exception code for LoadTable operator. For the case where one
4316 of the input strings is too long, change the returned exception code from
4317 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
4319 Fixed a possible memory leak in dispatcher error path. On error, delete
4320 the mutex object created during method mutex creation. Reported by
4321 tim.gardner@canonical.com.
4323 Example Code and Data Size: These are the sizes for the OS-independent
4324 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4325 debug version of the code includes the debug output trace mechanism and
4326 has a much larger code and data size.
4329 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4330 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4332 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4333 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4336 2) iASL Compiler/Disassembler and Tools:
4338 iASL: Disallow a method call as argument to the ObjectType ASL operator.
4339 This change tracks an errata to the ACPI 5.0 document. The AML grammar
4340 will not allow the interpreter to differentiate between a method and a
4341 method invocation when these are used as an argument to the ObjectType
4342 operator. The ACPI specification change is to disallow a method
4344 (UserTerm) for the ObjectType operator.
4346 Finish support for the TPM2 and CSRT tables in the headers, table
4347 compiler, and disassembler.
4349 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
4350 always expires immediately if the semaphore is not available. The
4352 code was using a relative-time timeout, but sem_timedwait requires the
4354 of an absolute time.
4356 iASL: Added a remark if the Timer() operator is used within a 32-bit
4357 table. This operator returns a 64-bit time value that will be truncated
4358 within a 32-bit table.
4360 iASL Source code restructuring: Cleanup to improve modularity. The
4361 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
4362 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
4366 ----------------------------------------
4367 14 November 2012. Summary of changes for version 20121114:
4369 1) ACPICA Kernel-resident Subsystem:
4371 Implemented a performance enhancement for ACPI/AML Package objects. This
4372 change greatly increases the performance of Package objects within the
4373 interpreter. It changes the processing of reference counts for packages
4375 optimizing for the most common case where the package sub-objects are
4376 either Integers, Strings, or Buffers. Increases the overall performance
4378 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
4380 Chao Guan. ACPICA BZ 943.
4382 Implemented and deployed common macros to extract flag bits from resource
4383 descriptors. Improves readability and maintainability of the code. Fixes
4385 problem with the UART serial bus descriptor for the number of data bits
4386 flags (was incorrectly 2 bits, should be 3).
4388 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
4389 of the macros and changed the SETx macros to the style of (destination,
4390 source). Also added ACPI_CASTx companion macros. Lv Zheng.
4392 Example Code and Data Size: These are the sizes for the OS-independent
4393 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4394 debug version of the code includes the debug output trace mechanism and
4395 has a much larger code and data size.
4398 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4399 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4401 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4402 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4405 2) iASL Compiler/Disassembler and Tools:
4407 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
4408 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
4409 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
4411 Disassembler: Fixed a problem with external declaration generation. Fixes
4412 a problem where an incorrect pathname could be generated for an external
4413 declaration if the original reference to the object includes leading
4414 carats (^). ACPICA BZ 984.
4416 Debugger: Completed a major update for the Disassemble<method> command.
4417 This command was out-of-date and did not properly disassemble control
4418 methods that had any reasonable complexity. This fix brings the command
4420 to the same level as the rest of the disassembler. Adds one new file,
4421 dmdeferred.c, which is existing code that is now common with the main
4422 disassembler and the debugger disassemble command. ACPICA MZ 978.
4424 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
4425 Newer versions of Bison emit this prototype, so moved the prototype out
4427 the iASL header to where it is actually used in order to avoid a
4431 iASL/Tools: Standardized use of the stream I/O functions:
4432 1) Ensure check for I/O error after every fopen/fread/fwrite
4433 2) Ensure proper order of size/count arguments for fread/fwrite
4434 3) Use test of (Actual != Requested) after all fwrite, and most fread
4435 4) Standardize I/O error messages
4436 Improves reliability and maintainability of the code. Bob Moore, Lv
4440 Disassembler: Prevent duplicate External() statements. During generation
4441 of external statements, detect similar pathnames that are actually
4442 duplicates such as these:
4445 Remove all leading '\' characters from pathnames during the external
4446 statement generation so that duplicates will be detected and tossed.
4449 Tools: Replace low-level I/O with stream I/O functions. Replace
4450 open/read/write/close with the stream I/O equivalents
4451 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
4454 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
4455 name header so that AcpiXtract recognizes the output file/table.
4457 iASL: Remove obsolete -2 option flag. Originally intended to force the
4458 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
4459 and the entire concept is now obsolete.
4461 ----------------------------------------
4462 18 October 2012. Summary of changes for version 20121018:
4465 1) ACPICA Kernel-resident Subsystem:
4467 Updated support for the ACPI 5.0 MPST table. Fixes some problems
4468 introduced by late changes to the table as it was added to the ACPI 5.0
4469 specification. Includes header, disassembler, and data table compiler
4470 support as well as a new version of the MPST template.
4472 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
4473 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
4474 methods: _HID, _CID, and _UID.
4476 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
4477 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
4478 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
4479 names for their various drivers. Affects the AcpiGetObjectInfo external
4480 interface, and other internal interfaces as well.
4482 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
4483 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
4484 on machines that support non-aligned transfers. Optimizes for this case
4485 rather than using a strncpy. With assistance from Zheng Lv.
4487 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
4488 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
4490 Added a new debug print message for AML mutex objects that are force-
4491 released. At control method termination, any currently acquired mutex
4492 objects are force-released. Adds a new debug-only message for each one
4495 Audited/updated all ACPICA return macros and the function debug depth
4496 counter: 1) Ensure that all functions that use the various TRACE macros
4497 also use the appropriate ACPICA return macros. 2) Ensure that all normal
4498 return statements surround the return expression (value) with parens to
4499 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
4500 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
4502 Global source code changes/maintenance: All extra lines at the start and
4503 end of each source file have been removed for consistency. Also, within
4504 comments, all new sentences start with a single space instead of a double
4505 space, again for consistency across the code base.
4507 Example Code and Data Size: These are the sizes for the OS-independent
4508 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4509 debug version of the code includes the debug output trace mechanism and
4510 has a much larger code and data size.
4513 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4514 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4516 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4517 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4520 2) iASL Compiler/Disassembler and Tools:
4522 AcpiExec: Improved the algorithm used for memory leak/corruption
4523 detection. Added some intelligence to the code that maintains the global
4524 list of allocated memory. The list is now ordered by allocated memory
4525 address, significantly improving performance. When running AcpiExec on
4526 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
4527 on the platform and/or the environment. Note, this performance
4528 enhancement affects the AcpiExec utility only, not the kernel-resident
4531 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
4532 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
4533 incorrect table offset reported for invalid opcodes. Report the original
4534 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
4536 Disassembler: Enhanced the -vt option to emit the binary table data in
4537 hex format to assist with debugging.
4539 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
4540 size of file structure. Colin Ian King.
4542 ----------------------------------------
4543 13 September 2012. Summary of changes for version 20120913:
4546 1) ACPICA Kernel-resident Subsystem:
4548 ACPI 5.0: Added two new notify types for the Hardware Error Notification
4549 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
4553 Table Manager: Merged/removed duplicate code in the root table resize
4554 functions. One function is external, the other is internal. Lv Zheng,
4558 Makefiles: Completely removed the obsolete "Linux" makefiles under
4559 acpica/generate/linux. These makefiles are obsolete and have been
4562 the generic unix makefiles under acpica/generate/unix.
4564 Makefiles: Ensure that binary files always copied properly. Minor rule
4566 to ensure that the final binary output files are always copied up to the
4567 appropriate binary directory (bin32 or bin64.)
4569 Example Code and Data Size: These are the sizes for the OS-independent
4570 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4572 version of the code includes the debug output trace mechanism and has a
4574 larger code and data size.
4577 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4578 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4580 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4581 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4584 2) iASL Compiler/Disassembler and Tools:
4586 Disassembler: Fixed a possible fault during the disassembly of resource
4587 descriptors when a second parse is required because of the invocation of
4588 external control methods within the table. With assistance from
4589 adq@lidskialf.net. ACPICA BZ 976.
4591 iASL: Fixed a namepath optimization problem. An error can occur if the
4593 node that contains the namepath to be optimized does not have a parent
4595 that is a named object. This change fixes the problem.
4597 iASL: Fixed a regression where the AML file is not deleted on errors. The
4599 output file should be deleted if there are any errors during the
4602 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4604 iASL: Added a feature to automatically increase internal line buffer
4606 Via realloc(), automatically increase the internal line buffer sizes as
4607 necessary to support very long source code lines. The current version of
4609 preprocessor requires a buffer long enough to contain full source code
4611 This change increases the line buffer(s) if the input lines go beyond the
4612 current buffer size. This eliminates errors that occurred when a source
4614 line was longer than the buffer.
4616 iASL: Fixed a problem with constant folding in method declarations. The
4617 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4619 Type3 opcode was used.
4621 Debugger: Improved command help support. For incorrect argument count,
4623 full help for the command. For help command itself, allow an argument to
4626 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4627 errors during execution of the suite. Guan Chao.
4629 ----------------------------------------
4630 16 August 2012. Summary of changes for version 20120816:
4633 1) ACPICA Kernel-resident Subsystem:
4635 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4637 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4638 deprecated and will probably be removed from the ACPI specification.
4640 does not invoke them, and reportedly never will. The final nail in the
4642 is that the ACPI specification states that these methods must be run with
4643 interrupts off, which is not going to happen in a kernel interpreter.
4645 Linux has removed all use of the methods also. It was discovered that
4646 invoking these functions caused failures on some machines, probably
4648 they were never tested since Windows does not call them. Affects two
4650 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4653 Implemented support for complex bit-packed buffers returned from the _PLD
4654 (Physical Location of Device) predefined method. Adds a new external
4655 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4657 structure. Note: C Bitfields cannot be used for this type of predefined
4658 structure since the memory layout of individual bitfields is not defined
4660 the C language. In addition, there are endian concerns where a compiler
4662 change the bitfield ordering based on the machine type. The new ACPICA
4663 interface eliminates these issues, and should be called after _PLD is
4664 executed. ACPICA BZ 954.
4666 Implemented a change to allow a scope change to root (via "Scope (\)")
4668 execution of module-level ASL code (code that is executed at table load
4671 Added the Windows8/Server2012 string for the _OSI method. This change
4674 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4677 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4679 and CSRT (Core System Resource Table).
4681 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4682 names. This simplifies access to the buffers returned by these predefined
4683 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4685 GPE support: Removed an extraneous parameter from the various low-level
4686 internal GPE functions. Tang Feng.
4688 Removed the linux makefiles from the unix packages. The generate/linux
4689 makefiles are obsolete and have been removed from the unix tarball
4691 packages. The replacement makefiles are under generate/unix, and there is
4693 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4695 Updates for Unix makefiles:
4696 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4697 2) Update linker flags (move to end of command line) for AcpiExec
4701 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4702 utxface.c to improve modularity and reduce file size.
4704 Example Code and Data Size: These are the sizes for the OS-independent
4705 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4706 debug version of the code includes the debug output trace mechanism and
4708 much larger code and data size.
4711 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4712 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4714 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4715 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4718 2) iASL Compiler/Disassembler and Tools:
4720 iASL: Fixed a problem with constant folding for fixed-length constant
4721 expressions. The constant-folding code was not being invoked for constant
4722 expressions that allow the use of type 3/4/5 opcodes to generate
4724 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4726 in the generation of invalid AML bytecode. ACPICA BZ 970.
4728 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4729 apparently automatically emit some of the necessary externals. This
4731 handles these versions in order to eliminate generation warnings.
4733 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4735 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4737 within comments in the output file.
4739 Debugger: Fixed a regression with the "Threads" command where
4740 AE_BAD_PARAMETER was always returned.
4742 ----------------------------------------
4743 11 July 2012. Summary of changes for version 20120711:
4745 1) ACPICA Kernel-resident Subsystem:
4747 Fixed a possible fault in the return package object repair code. Fixes a
4748 problem that can occur when a lone package object is wrapped with an
4750 package object in order to force conformance to the ACPI specification.
4752 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4756 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4757 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4758 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4760 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4762 Intel and other vendors. (for Intel: ICH4-M and earlier)
4764 This change removes the code to disable/enable bus master arbitration
4766 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4768 resume problems on some machines. The change has been in use for over
4772 Implemented two new external interfaces to support host-directed dynamic
4774 table load and unload. They are intended to simplify the host
4776 of hot-plug support:
4777 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4778 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4780 See the ACPICA reference for additional details. Adds one new file,
4781 components/tables/tbxfload.c
4783 Implemented and deployed two new interfaces for errors and warnings that
4785 known to be caused by BIOS/firmware issues:
4786 AcpiBiosError: Prints "ACPI Firmware Error" message.
4787 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4788 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4790 and FADT errors. Additional deployment to be completed as appropriate in
4792 future. The associated conditional macros are ACPI_BIOS_ERROR and
4793 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4798 Implicit notify support: ensure that no memory allocation occurs within a
4799 critical region. This fix moves a memory allocation outside of the time
4801 spinlock is held. Fixes issues on systems that do not allow this
4805 Split exception code utilities and tables into a new file,
4808 Example Code and Data Size: These are the sizes for the OS-independent
4809 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4811 version of the code includes the debug output trace mechanism and has a
4813 larger code and data size.
4816 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4817 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4819 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4820 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4823 2) iASL Compiler/Disassembler and Tools:
4825 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4829 Debugger: Enhanced the "tables" command to emit additional information
4831 the current set of ACPI tables, including the owner ID and flags decode.
4833 Debugger: Reimplemented the "unload" command to use the new
4834 AcpiUnloadParentTable external interface. This command was disable
4836 due to need for an unload interface.
4838 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4840 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4842 ----------------------------------------
4843 20 June 2012. Summary of changes for version 20120620:
4846 1) ACPICA Kernel-resident Subsystem:
4848 Implemented support to expand the "implicit notify" feature to allow
4850 devices to be notified by a single GPE. This feature automatically
4852 runtime device notification in the absence of a BIOS-provided GPE control
4853 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4855 provided by ACPICA for Windows compatibility, and is a workaround for
4858 code errors. See the description of the AcpiSetupGpeForWake interface in
4860 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4862 Changed some comments and internal function names to simplify and ensure
4863 correctness of the Linux code translation. No functional changes.
4865 Example Code and Data Size: These are the sizes for the OS-independent
4866 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4868 version of the code includes the debug output trace mechanism and has a
4870 larger code and data size.
4873 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4874 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4876 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4877 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4880 2) iASL Compiler/Disassembler and Tools:
4882 Disassembler: Added support to emit short, commented descriptions for the
4884 predefined names in order to improve the readability of the disassembled
4885 output. ACPICA BZ 959. Changes include:
4886 1) Emit descriptions for all standard predefined names (_INI, _STA,
4889 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4890 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4893 AcpiSrc: Fixed several long-standing Linux code translation issues.
4895 descriptions in function headers are now translated properly to lower
4898 underscores. ACPICA BZ 961. Also fixes translation problems such as
4904 local_fADT -> local_FADT
4905 execute_oSI -> execute_OSI
4907 iASL: Fixed a problem where null bytes were inadvertently emitted into
4911 iASL: Added the existing debug options to the standard help screen. There
4913 no longer two different help screens. ACPICA BZ 957.
4915 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4917 expand some of the descriptions where appropriate.
4919 iASL: Fixed the -ot option (display compile times/statistics). Was not
4921 properly for standard output; only worked for the debug file case.
4923 ----------------------------------------
4924 18 May 2012. Summary of changes for version 20120518:
4927 1) ACPICA Core Subsystem:
4929 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4931 to block until asynchronous events such as notifies and GPEs have
4933 Within ACPICA, it is only called before a notify or GPE handler is
4934 removed/uninstalled. It also may be useful for the host OS within related
4935 drivers such as the Embedded Controller driver. See the ACPICA reference
4937 additional information. ACPICA BZ 868.
4939 ACPI Tables: Added a new error message for a possible overflow failure
4941 the conversion of FADT 32-bit legacy register addresses to internal
4944 bit GAS structure representation. The GAS has a one-byte "bit length"
4946 thus limiting the register length to 255 bits. ACPICA BZ 953.
4948 Example Code and Data Size: These are the sizes for the OS-independent
4949 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4951 version of the code includes the debug output trace mechanism and has a
4953 larger code and data size.
4956 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4957 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4959 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4960 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4963 2) iASL Compiler/Disassembler and Tools:
4965 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4967 This keyword was added late in the ACPI 5.0 release cycle and was not
4968 implemented until now.
4970 Disassembler: Added support for Operation Region externals. Adds missing
4971 support for operation regions that are defined in another table, and
4972 referenced locally via a Field or BankField ASL operator. Now generates
4974 correct External statement.
4976 Disassembler: Several additional fixes for the External() statement
4978 related to some ASL operators. Also, order the External() statements
4979 alphabetically in the disassembler output. Fixes the External()
4982 the Create* field, Alias, and Scope operators:
4983 1) Create* buffer field operators - fix type mismatch warning on
4985 2) Alias - implement missing External support
4986 3) Scope - fix to make sure all necessary externals are emitted.
4988 iASL: Improved pathname support. For include files, merge the prefix
4990 with the file pathname and eliminate unnecessary components. Convert
4991 backslashes in all pathnames to forward slashes, for readability. Include
4993 pathname changes affect both #include and Include() type operators.
4995 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4997 of a valid line by inserting a newline and then returning the EOF during
4999 next call to GetNextLine. Prevents the line from being ignored due to EOF
5002 iASL: Implemented some changes to enhance the IDE support (-vi option.)
5004 and Warning messages are now correctly recognized for both the source
5006 browser and the global error and warning counts.
5008 ----------------------------------------
5009 20 April 2012. Summary of changes for version 20120420:
5012 1) ACPICA Core Subsystem:
5014 Implemented support for multiple notify handlers. This change adds
5017 allow multiple system and device notify handlers on Device, Thermal Zone,
5019 Processor objects. This can simplify the host OS notification
5021 Also re-worked and restructured the entire notify support code to
5023 handler installation, handler removal, notify event queuing, and notify
5024 dispatch to handler(s). Note: there can still only be two global notify
5025 handlers - one for system notifies and one for device notifies. There are
5027 changes to the existing handler install/remove interfaces. Lin Ming, Bob
5028 Moore, Rafael Wysocki.
5030 Fixed a regression in the package repair code where the object reference
5031 count was calculated incorrectly. Regression was introduced in the commit
5032 "Support to add Package wrappers".
5034 Fixed a couple possible memory leaks in the AML parser, in the error
5036 path. Jesper Juhl, Lin Ming.
5038 Example Code and Data Size: These are the sizes for the OS-independent
5039 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5040 debug version of the code includes the debug output trace mechanism and
5042 much larger code and data size.
5045 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5046 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5048 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5049 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
5052 2) iASL Compiler/Disassembler and Tools:
5054 iASL: Fixed a problem with the resource descriptor support where the
5056 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
5057 included in cumulative descriptor offset, resulting in incorrect values
5059 resource tags within resource descriptors appearing after a
5061 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
5063 iASL and Preprocessor: Implemented full support for the #line directive
5065 correctly track original source file line numbers through the .i
5067 output file - for error and warning messages.
5069 iASL: Expand the allowable byte constants for address space IDs.
5071 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
5072 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
5074 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
5076 iASL: Add option to completely disable the preprocessor (-Pn).
5078 iASL: Now emit all error/warning messages to standard error (stderr) by
5079 default (instead of the previous stdout).
5081 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
5083 for resource descriptor offset fix above. Update/cleanup error output
5084 routines. Enable and send iASL errors/warnings to an error logfile
5085 (error.txt). Send all other iASL output to a logfile (compiler.txt).
5087 several extraneous "unrecognized operator" messages.
5089 ----------------------------------------
5090 20 March 2012. Summary of changes for version 20120320:
5093 1) ACPICA Core Subsystem:
5095 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
5096 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
5098 does not execute these methods, and therefore these methods are often
5099 untested. It has been seen on some systems where the execution of these
5100 methods causes errors and also prevents the machine from entering S5. It
5102 therefore suggested that host operating systems do not execute these
5104 by default. In the future, perhaps these methods can be optionally
5106 based on the age of the system and/or what is the newest version of
5108 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
5110 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
5113 Fixed a problem where the length of the local/common FADT was set too
5115 The local FADT table length cannot be set to the common length until the
5116 original length has been examined. There is code that checks the table
5118 and sets various fields appropriately. This can affect older machines
5120 early FADT versions. For example, this can cause inadvertent writes to
5122 CST_CNT register. Julian Anastasov.
5124 Fixed a mapping issue related to a physical table override. Use the
5126 mapping mechanism for tables loaded via the physical override OSL
5128 This allows for early mapping before the virtual memory manager is
5130 Thomas Renninger, Bob Moore.
5132 Enhanced the automatic return-object repair code: Repair a common problem
5134 predefined methods that are defined to return a variable-length Package
5136 sub-objects. If there is only one sub-object, some BIOS ASL code
5138 simply returns the single object instead of a Package with one sub-
5140 This new support will repair this error by wrapping a Package object
5142 the original object, creating the correct and expected Package with one
5144 object. Names that can be repaired in this manner include: _ALR, _CSD,
5146 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
5149 Changed the exception code returned for invalid ACPI paths passed as
5150 parameters to external interfaces such as AcpiEvaluateObject. Was
5151 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
5153 Example Code and Data Size: These are the sizes for the OS-independent
5154 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5156 version of the code includes the debug output trace mechanism and has a
5158 larger code and data size.
5161 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5162 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5164 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5165 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5168 2) iASL Compiler/Disassembler and Tools:
5170 iASL: Added the infrastructure and initial implementation of a integrated
5172 like preprocessor. This will simplify BIOS development process by
5174 the need for a separate preprocessing step during builds. On Windows, it
5176 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
5177 features including full #define() macro support are still under
5179 These preprocessor directives are supported:
5192 In addition, these new command line options are supported:
5193 -D <symbol> Define symbol for preprocessor use
5194 -li Create preprocessed output file (*.i)
5195 -P Preprocess only and create preprocessor output file (*.i)
5197 Table Compiler: Fixed a problem where the equals operator within an
5199 did not work properly.
5201 Updated iASL to use the current versions of Bison/Flex. Updated the
5203 project file to invoke these tools from the standard location. ACPICA BZ
5206 Flex for Windows: V2.5.4
5207 Bison for Windows: V2.4.1
5209 ----------------------------------------
5210 15 February 2012. Summary of changes for version 20120215:
5213 1) ACPICA Core Subsystem:
5215 There have been some major changes to the sleep/wake support code, as
5216 described below (a - e).
5218 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
5219 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
5220 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
5222 time the _BFS method is called and the _WAK method is called. NOTE: all
5224 must update their wake/resume code or else sleep/wake will not work
5228 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
5230 method. Some machines require that the GPEs are enabled before the _WAK
5232 is executed. Thomas Renninger.
5234 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
5236 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
5238 determine whether the system is rebooting or resuming. Matthew Garrett.
5240 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
5242 match the ACPI specification requirement. Rafael Wysocki.
5244 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
5245 registers within the V5 FADT. This support adds two new files:
5246 hardware/hwesleep.c implements the support for the new registers. Moved
5248 sleep/wake external interfaces to hardware/hwxfsleep.c.
5251 Added a new OSL interface for ACPI table overrides,
5252 AcpiOsPhysicalTableOverride. This interface allows the host to override a
5253 table via a physical address, instead of the logical address required by
5254 AcpiOsTableOverride. This simplifies the host implementation. Initial
5255 implementation by Thomas Renninger. The ACPICA implementation creates a
5257 shared function for table overrides that attempts both a logical and a
5260 Expanded the OSL memory read/write interfaces to 64-bit data
5261 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
5262 transfer support for GAS register structures passed to AcpiRead and
5265 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
5267 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
5269 See the ACPICA reference for details. ACPICA BZ 942. This option removes
5271 10% of the code and 5% of the static data, and the following hardware
5273 features become unavailable:
5274 PM Event and Control registers
5275 SCI interrupt (and handler)
5277 General Purpose Events (GPEs)
5280 FACS table (Waking vectors and Global Lock)
5282 Updated the unix tarball directory structure to match the ACPICA git
5284 tree. This ensures that the generic unix makefiles work properly (in
5285 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
5288 Updated the return value of the _REV predefined method to integer value 5
5290 reflect ACPI 5.0 support.
5292 Moved the external ACPI PM timer interface prototypes to the public
5294 file where they belong.
5296 Example Code and Data Size: These are the sizes for the OS-independent
5297 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5299 version of the code includes the debug output trace mechanism and has a
5301 larger code and data size.
5304 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5305 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5307 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5308 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5311 2) iASL Compiler/Disassembler and Tools:
5313 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
5314 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
5315 incorrectly displayed.
5317 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
5320 ----------------------------------------
5321 11 January 2012. Summary of changes for version 20120111:
5324 1) ACPICA Core Subsystem:
5326 Implemented a new mechanism to allow host device drivers to check for
5328 range conflicts with ACPI Operation Regions. Both SystemMemory and
5330 address spaces are supported. A new external interface,
5331 AcpiCheckAddressRange,
5332 allows drivers to check an address range against the ACPI namespace. See
5334 ACPICA reference for additional details. Adds one new file,
5335 utilities/utaddress.c. Lin Ming, Bob Moore.
5337 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
5340 Status registers, update the ACPI 5.0 flags, and update internal data
5341 structures to handle an FADT larger than 256 bytes. The size of the ACPI
5345 Updated all ACPICA copyrights and signons to 2012. Added the 2012
5347 all module headers and signons, including the standard Linux header. This
5348 affects virtually every file in the ACPICA core subsystem, iASL compiler,
5350 all ACPICA utilities.
5352 Example Code and Data Size: These are the sizes for the OS-independent
5353 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5355 version of the code includes the debug output trace mechanism and has a
5357 larger code and data size.
5360 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5361 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5363 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5364 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5367 2) iASL Compiler/Disassembler and Tools:
5369 Disassembler: fixed a problem with the automatic resource tag generation
5370 support. Fixes a problem where the resource tags are inadvertently not
5371 constructed if the table being disassembled contains external references
5373 control methods. Moved the actual construction of the tags to after the
5375 namespace is constructed (after 2nd parse is invoked due to external
5377 method references.) ACPICA BZ 941.
5379 Table Compiler: Make all "generic" operators caseless. These are the
5381 like UINT8, String, etc. Making these caseless improves ease-of-use.
5385 ----------------------------------------
5386 23 November 2011. Summary of changes for version 20111123:
5388 0) ACPI 5.0 Support:
5390 This release contains full support for the ACPI 5.0 specification, as
5393 Reduced Hardware Support:
5394 -------------------------
5396 This support allows for ACPI systems without the usual ACPI hardware.
5398 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
5400 not attempt to initialize or use any of the usual ACPI hardware. Note,
5402 this flag is set, all of the following ACPI hardware is assumed to be not
5403 present and is not initialized or accessed:
5405 General Purpose Events (GPEs)
5406 Fixed Events (PM1a/PM1b and PM Control)
5407 Power Management Timer and Console Buttons (power/sleep)
5408 Real-time Clock Alarm
5410 System Control Interrupt (SCI)
5411 The FACS is assumed to be non-existent
5416 All new tables and updates to existing tables are fully supported in the
5417 ACPICA headers (for use by device drivers), the disassembler, and the
5419 Data Table Compiler. ACPI 5.0 defines these new tables:
5421 BGRT /* Boot Graphics Resource Table */
5422 DRTM /* Dynamic Root of Trust for Measurement table */
5423 FPDT /* Firmware Performance Data Table */
5424 GTDT /* Generic Timer Description Table */
5425 MPST /* Memory Power State Table */
5426 PCCT /* Platform Communications Channel Table */
5427 PMTT /* Platform Memory Topology Table */
5428 RASF /* RAS Feature table */
5430 Operation Regions/SpaceIDs:
5431 ---------------------------
5433 All new operation regions are fully supported by the iASL compiler, the
5434 disassembler, and the ACPICA runtime code (for dispatch to region
5436 The new operation region Space IDs are:
5441 Resource Descriptors:
5442 ---------------------
5444 All new ASL resource descriptors are fully supported by the iASL
5447 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
5449 all new predefined resource tags). New descriptors are:
5458 ASL/AML Operators, New and Modified:
5459 ------------------------------------
5461 One new operator is added, the Connection operator, which is used to
5463 a GeneralPurposeIo or GenericSerialBus resource descriptor with
5465 field objects within an operation region. Several new protocols are
5467 with the AccessAs operator. All are fully supported by the iASL compiler,
5468 disassembler, and runtime ACPICA AML interpreter:
5470 Connection // Declare Field Connection
5472 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
5473 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
5475 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
5476 RawDataBuffer // Data type for Vendor Data
5479 Predefined ASL/AML Objects:
5480 ---------------------------
5482 All new predefined objects/control-methods are supported by the iASL
5484 and the ACPICA runtime validation/repair (arguments and return values.)
5486 predefined names include the following:
5488 Standard Predefined Names (Objects or Control Methods):
5489 _AEI, _CLS, _CPC, _CWS, _DEP,
5490 _DLM, _EVT, _GCP, _CRT, _GWS,
5491 _HRV, _PRE, _PSE, _SRT, _SUB.
5493 Resource Tags (Names used to access individual fields within resource
5495 _DBT, _DPL, _DRS, _END, _FLC,
5496 _IOR, _LIN, _MOD, _PAR, _PHA,
5497 _PIN, _PPI, _POL, _RXL, _SLV,
5498 _SPE, _STB, _TXL, _VEN.
5500 ACPICA External Interfaces:
5501 ---------------------------
5503 Several new interfaces have been defined for use by ACPI-related device
5504 drivers and other host OS services:
5506 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
5508 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
5509 provided by the BIOS. They are intended to be used in conjunction with
5511 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
5512 mutual exclusion with the AML code/interpreter.
5514 AcpiGetEventResources: Returns the (formatted) resource descriptors as
5516 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
5518 resource descriptors associated with hardware-reduced platform events,
5520 to the AcpiGetCurrentResources interface.
5522 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
5523 operation regions, information about the Connection() object and any
5525 length information is passed to the region handler within the Context
5528 AcpiBufferToResource: This interface converts a raw AML buffer containing
5530 resource template or resource descriptor to the ACPI_RESOURCE internal
5532 suitable for use by device drivers. Can be used by an operation region
5534 to convert the Connection() buffer object into a ACPI_RESOURCE.
5536 Miscellaneous/Tools/TestSuites:
5537 -------------------------------
5539 Support for extended _HID names (Four alpha characters instead of three).
5540 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
5541 Support for ACPI 5.0 features in the ASLTS test suite.
5542 Fully updated documentation (ACPICA and iASL reference documents.)
5544 ACPI Table Definition Language:
5545 -------------------------------
5547 Support for this language was implemented and released as a subsystem of
5549 iASL compiler in 2010. (See the iASL compiler User Guide.)
5552 Non-ACPI 5.0 changes for this release:
5553 --------------------------------------
5555 1) ACPICA Core Subsystem:
5557 Fix a problem with operation region declarations where a failure can
5560 the region name and an argument that evaluates to an object (such as the
5561 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
5564 Do not abort an ACPI table load if an invalid space ID is found within.
5566 will be caught later if the offending method is executed. ACPICA BZ 925.
5568 Fixed an issue with the FFixedHW space ID where the ID was not always
5569 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
5571 Fixed a problem with the 32-bit generation of the unix-specific OSL
5572 (osunixxf.c). Lin Ming, ACPICA BZ 936.
5574 Several changes made to enable generation with the GCC 4.6 compiler.
5578 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
5580 field registers out-of-range.
5582 2) iASL Compiler/Disassembler and Tools:
5584 iASL: Implemented the __PATH__ operator, which returns the full pathname
5586 the current source file.
5588 AcpiHelp: Automatically display expanded keyword information for all ASL
5591 Debugger: Add "Template" command to disassemble/dump resource template
5594 Added a new master script to generate and execute the ASLTS test suite.
5595 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5597 iASL: Fix problem with listing generation during processing of the
5599 operator where AML listing was disabled until the entire Switch block was
5602 iASL: Improve support for semicolon statement terminators. Fix "invalid
5603 character" message for some cases when the semicolon is used. Semicolons
5605 now allowed after every <Term> grammar element. ACPICA BZ 927.
5607 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5610 Disassembler: Fix problem with disassembly of the DataTableRegion
5612 where an inadvertent "Unhandled deferred opcode" message could be
5615 3) Example Code and Data Size
5617 These are the sizes for the OS-independent acpica.lib produced by the
5618 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5619 includes the debug output trace mechanism and has a much larger code and
5624 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5625 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5627 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5628 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5630 ----------------------------------------
5631 22 September 2011. Summary of changes for version 20110922:
5635 Support for ACPI 5.0 in ACPICA has been underway for several months and
5637 be released at the same time that ACPI 5.0 is officially released.
5639 The ACPI 5.0 specification is on track for release in the next few
5642 1) ACPICA Core Subsystem:
5644 Fixed a problem where the maximum sleep time for the Sleep() operator was
5645 intended to be limited to two seconds, but was inadvertently limited to
5649 Linux and Unix makefiles: Added header file dependencies to ensure
5651 generation of ACPICA core code and utilities. Also simplified the
5653 considerably through the use of the vpath variable to specify search
5657 2) iASL Compiler/Disassembler and Tools:
5659 iASL: Implemented support to check the access length for all fields
5661 access named Resource Descriptor fields. For example, if a resource field
5663 defined to be two bits, a warning is issued if a CreateXxxxField() is
5665 with an incorrect bit length. This is implemented for all current
5667 descriptor names. ACPICA BZ 930.
5669 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5673 iASL: Fixed a couple of issues associated with variable-length package
5674 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5676 VAR_PACKAGE when these are used as a package length. 2) Allow the
5678 opcode (in addition to PACKAGE) when validating object types for
5682 iASL: Emit statistics for all output files (instead of just the ASL input
5684 AML output). Includes listings, hex files, etc.
5686 iASL: Added -G option to the table compiler to allow the compilation of
5688 ACPI tables. The only part of a table that is required is the standard
5693 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5695 which also adds correct 64-bit support. Also, now all output filenames
5697 completely lower case.
5699 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5700 loading table files. A warning is issued for any such tables. The only
5701 exception is an FADT. This also fixes a possible fault when attempting to
5703 non-AML tables. ACPICA BZ 932.
5705 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5707 missing table terminator could cause a fault when using the -p option.
5709 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5712 3) Example Code and Data Size
5714 These are the sizes for the OS-independent acpica.lib produced by the
5715 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5716 includes the debug output trace mechanism and has a much larger code and
5720 Previous Release (VC 9.0):
5721 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5722 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5723 Current Release (VC 9.0):
5724 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5725 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5728 ----------------------------------------
5729 23 June 2011. Summary of changes for version 20110623:
5731 1) ACPI CA Core Subsystem:
5733 Updated the predefined name repair mechanism to not attempt repair of a
5735 return object if a _PSS object is present. We can only sort the _TSS
5737 package if there is no _PSS within the same scope. This is because if
5740 present, the ACPI specification dictates that the _TSS Power Dissipation
5742 is to be ignored, and therefore some BIOSs leave garbage values in the
5744 Power field(s). In this case, it is best to just return the _TSS package
5746 is. Reported by, and fixed with assistance from Fenghua Yu.
5748 Added an option to globally disable the control method return value
5750 and repair. This runtime option can be used to disable return value
5753 this is causing a problem on a particular machine. Also added an option
5755 AcpiExec (-dr) to set this disable flag.
5757 All makefiles and project files: Major changes to improve generation of
5759 tools. ACPICA BZ 912:
5760 Reduce default optimization levels to improve compatibility
5761 For Linux, add strict-aliasing=0 for gcc 4
5762 Cleanup and simplify use of command line defines
5763 Cleanup multithread library support
5764 Improve usage messages
5766 Linux-specific header: update handling of THREAD_ID and pthread. For the
5768 bit case, improve casting to eliminate possible warnings, especially with
5772 Example Code and Data Size: These are the sizes for the OS-independent
5773 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5775 version of the code includes the debug output trace mechanism and has a
5777 larger code and data size.
5779 Previous Release (VC 9.0):
5780 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5781 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5782 Current Release (VC 9.0):
5783 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5784 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5786 2) iASL Compiler/Disassembler and Tools:
5788 With this release, a new utility named "acpihelp" has been added to the
5790 package. This utility summarizes the ACPI specification chapters for the
5792 and AML languages. It generates under Linux/Unix as well as Windows, and
5793 provides the following functionality:
5794 Find/display ASL operator(s) -- with description and syntax.
5795 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5796 Find/display ACPI predefined name(s) -- with description, number
5797 of arguments, and the return value data type.
5798 Find/display AML opcode name(s) -- with opcode, arguments, and
5800 Decode/display AML opcode -- with opcode name, arguments, and
5803 Service Layers: Make multi-thread support configurable. Conditionally
5805 the multi-thread support so that threading libraries will not be linked
5808 necessary. The only tool that requires multi-thread support is AcpiExec.
5810 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5812 Bison appear to want the interface to yyerror to be a const char * (or at
5813 least this is a problem when generating iASL on some systems.) ACPICA BZ
5817 Tools: Fix for systems where O_BINARY is not defined. Only used for
5819 versions of the tools.
5821 ----------------------------------------
5822 27 May 2011. Summary of changes for version 20110527:
5824 1) ACPI CA Core Subsystem:
5826 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5828 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5829 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5830 (PSDT is now obsolete.)
5831 2) We added support for OEMx tables, signature "OEM" plus a fourth
5832 "don't care" character.
5833 3) Valid tables were encountered with a null signature, so we just
5834 gave up on validating the signature, (05/2008).
5835 4) We encountered non-AML tables such as the MADT, which caused
5836 interpreter errors and kernel faults. So now, we once again allow
5837 only SSDT, OEMx, and now, also a null signature. (05/2011).
5839 Added the missing _TDL predefined name to the global name list in order
5841 enable validation. Affects both the core ACPICA code and the iASL
5844 Example Code and Data Size: These are the sizes for the OS-independent
5845 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5847 version of the code includes the debug output trace mechanism and has a
5849 larger code and data size.
5851 Previous Release (VC 9.0):
5852 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5853 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5854 Current Release (VC 9.0):
5855 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5856 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5858 2) iASL Compiler/Disassembler and Tools:
5860 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5862 debugger command line. This adds support beyond simple integers --
5864 Strings, Buffers, and Packages. Includes support for nested packages.
5865 Increased the default command line buffer size to accommodate these
5867 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5869 Debugger/AcpiExec: Implemented support for "default" method arguments for
5871 Execute/Debug command. Now, the debugger will always invoke a control
5873 with the required number of arguments -- even if the command line
5875 none or insufficient arguments. It uses default integer values for any
5877 arguments. Also fixes a bug where only six method arguments maximum were
5878 supported instead of the required seven.
5880 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5882 also return status in order to prevent buffer overruns. See the ACPICA
5883 reference for details and syntax. ACPICA BZ 921
5885 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5886 makefiles to simplify support for the two different but similar parser
5887 generators, bison and yacc.
5889 Updated the generic unix makefile for gcc 4. The default gcc version is
5891 expected to be 4 or greater, since options specific to gcc 4 are used.
5893 ----------------------------------------
5894 13 April 2011. Summary of changes for version 20110413:
5896 1) ACPI CA Core Subsystem:
5898 Implemented support to execute a so-called "orphan" _REG method under the
5900 device. This change will force the execution of a _REG method underneath
5903 device even if there is no corresponding operation region of type
5904 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5905 compatible with Windows behavior. ACPICA BZ 875.
5907 Added more predefined methods that are eligible for automatic NULL
5909 element removal. This change adds another group of predefined names to
5912 of names that can be repaired by having NULL package elements dynamically
5913 removed. This group are those methods that return a single variable-
5915 package containing simple data types such as integers, buffers, strings.
5917 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5920 and _TZD. ACPICA BZ 914.
5922 Split and segregated all internal global lock functions to a new file,
5925 Updated internal address SpaceID for DataTable regions. Moved this
5928 id in preparation for ACPI 5.0 changes that will include some new space
5931 change should not affect user/host code.
5933 Example Code and Data Size: These are the sizes for the OS-independent
5935 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5937 the code includes the debug output trace mechanism and has a much larger
5942 Previous Release (VC 9.0):
5943 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5944 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5945 Current Release (VC 9.0):
5946 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5947 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5949 2) iASL Compiler/Disassembler and Tools:
5951 iASL/DTC: Major update for new grammar features. Allow generic data types
5953 custom ACPI tables. Field names are now optional. Any line can be split
5955 multiple lines using the continuation char (\). Large buffers now use
5957 continuation character(s) and no colon on the continuation lines. See the
5959 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5962 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5964 Since the parser stuffs a "zero" as the return value for these statements
5967 the underlying AML grammar), they were seen as "return with value" by the
5969 semantic checking. They are now seen correctly as "null" return
5972 iASL: Check if a_REG declaration has a corresponding Operation Region.
5974 check for each _REG to ensure that there is in fact a corresponding
5976 region declaration in the same scope. If not, the _REG method is not very
5978 since it probably won't be executed. ACPICA BZ 915.
5980 iASL/DTC: Finish support for expression evaluation. Added a new
5983 that implements c-style operator precedence and parenthesization. ACPICA
5987 Disassembler/DTC: Remove support for () and <> style comments in data
5990 that DTC has full expression support, we don't want to have comment
5993 start with a parentheses or a less-than symbol. Now, only the standard /*
5996 comments are supported, as well as the bracket [] comments.
5998 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
6000 headers in the acpidump file. Update the header validation to support
6002 tables. Problem introduced in previous AcpiXtract version in the change
6004 support "wrong checksum" error messages emitted by acpidump utility.
6006 iASL: Add a * option to generate all template files (as a synonym for
6010 "iasl -T *" or "iasl -T ALL".
6012 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
6014 abort the compiler on "fatal" errors, simply should abort the current
6016 This allows multiple compiles with a single (possibly wildcard) compiler
6019 ----------------------------------------
6020 16 March 2011. Summary of changes for version 20110316:
6022 1) ACPI CA Core Subsystem:
6024 Fixed a problem caused by a _PRW method appearing at the namespace root
6026 during the setup of wake GPEs. A fault could occur if a _PRW directly
6029 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
6031 Implemented support for "spurious" Global Lock interrupts. On some
6033 global lock interrupt can occur without the pending flag being set. Upon
6036 interrupt, we now ensure that a thread is actually waiting for the lock
6038 signaling GL availability. Rafael Wysocki, Bob Moore.
6040 Example Code and Data Size: These are the sizes for the OS-independent
6042 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
6044 the code includes the debug output trace mechanism and has a much larger
6049 Previous Release (VC 9.0):
6050 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6051 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6052 Current Release (VC 9.0):
6053 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
6054 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
6056 2) iASL Compiler/Disassembler and Tools:
6058 Implemented full support for the "SLIC" ACPI table. Includes support in
6060 header files, disassembler, table compiler, and template generator. Bob
6064 AcpiXtract: Correctly handle embedded comments and messages from
6066 Apparently some or all versions of acpidump will occasionally emit a
6069 "Wrong checksum", etc., into the dump file. This was causing problems for
6070 AcpiXtract. ACPICA BZ 905.
6072 iASL: Fix the Linux makefile by removing an inadvertent double file
6076 AcpiExec: Update installation of operation region handlers. Install one
6078 for a user-defined address space. This is used by the ASL test suite
6081 ----------------------------------------
6082 11 February 2011. Summary of changes for version 20110211:
6084 1) ACPI CA Core Subsystem:
6086 Added a mechanism to defer _REG methods for some early-installed
6088 Most user handlers should be installed before call to
6089 AcpiEnableSubsystem.
6090 However, Event handlers and region handlers should be installed after
6091 AcpiInitializeObjects. Override handlers for the "default" regions should
6093 installed early, however. This change executes all _REG methods for the
6094 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
6095 chicken/egg issues between them. ACPICA BZ 848.
6097 Implemented an optimization for GPE detection. This optimization will
6099 ignore GPE registers that contain no enabled GPEs -- there is no need to
6100 read the register since this information is available internally. This
6101 becomes more important on machines with a large GPE space. ACPICA
6103 884. Lin Ming. Suggestion from Joe Liu.
6105 Removed all use of the highly unreliable FADT revision field. The
6107 number in the FADT has been found to be completely unreliable and cannot
6109 trusted. Only the actual table length can be used to infer the version.
6111 change updates the ACPICA core and the disassembler so that both no
6113 even look at the FADT version and instead depend solely upon the FADT
6116 Fix an unresolved name issue for the no-debug and no-error-message source
6117 generation cases. The _AcpiModuleName was left undefined in these cases,
6119 it is actually needed as a parameter to some interfaces. Define
6120 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
6122 Split several large files (makefiles and project files updated)
6123 utglobal.c -> utdecode.c
6124 dbcomds.c -> dbmethod.c dbnames.c
6125 dsopcode.c -> dsargs.c dscontrol.c
6126 dsload.c -> dsload2.c
6127 aslanalyze.c -> aslbtypes.c aslwalks.c
6129 Example Code and Data Size: These are the sizes for the OS-independent
6130 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
6131 debug version of the code includes the debug output trace mechanism and
6133 a much larger code and data size.
6135 Previous Release (VC 9.0):
6136 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6137 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6138 Current Release (VC 9.0):
6139 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6140 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6142 2) iASL Compiler/Disassembler and Tools:
6144 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
6145 These are useful C-style macros with the standard definitions. ACPICA
6148 iASL/DTC: Added support for integer expressions and labels. Support for
6150 expressions for all integer fields in all ACPI tables. Support for labels
6152 "generic" portions of tables such as UEFI. See the iASL reference manual.
6154 Debugger: Added a command to display the status of global handlers. The
6155 "handlers" command will display op region, fixed event, and miscellaneous
6156 global handlers. installation status -- and for op regions, whether
6158 or user-installed handler will be used.
6160 iASL: Warn if reserved method incorrectly returns a value. Many
6162 names are defined such that they do not return a value. If implemented as
6164 method, issue a warning if such a name explicitly returns a value. ACPICA
6167 iASL: Added detection of GPE method name conflicts. Detects a conflict
6169 there are two GPE methods of the form _Lxy and _Exy in the same scope.
6171 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
6173 iASL/DTC: Fixed a couple input scanner issues with comments and line
6174 numbers. Comment remover could get confused and miss a comment ending.
6176 a problem with line counter maintenance.
6178 iASL/DTC: Reduced the severity of some errors from fatal to error. There
6180 no need to abort on simple errors within a field definition.
6182 Debugger: Simplified the output of the help command. All help output now
6184 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
6186 ----------------------------------------
6187 12 January 2011. Summary of changes for version 20110112:
6189 1) ACPI CA Core Subsystem:
6191 Fixed a race condition between method execution and namespace walks that
6193 possibly cause a fault. The problem was apparently introduced in version
6194 20100528 as a result of a performance optimization that reduces the
6197 namespace walks upon method exit by using the delete_namespace_subtree
6198 function instead of the delete_namespace_by_owner function used
6200 Bug is a missing namespace lock in the delete_namespace_subtree function.
6201 dana.myers@oracle.com
6203 Fixed several issues and a possible fault with the automatic "serialized"
6204 method support. History: This support changes a method to "serialized" on
6206 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
6207 possibility that it cannot handle reentrancy. This fix repairs a couple
6209 issues seen in the field, especially on machines with many cores:
6211 1) Delete method children only upon the exit of the last thread,
6212 so as to not delete objects out from under other running threads
6213 (and possibly causing a fault.)
6214 2) Set the "serialized" bit for the method only upon the exit of the
6215 Last thread, so as to not cause deadlock when running threads
6217 3) Cleanup the use of the AML "MethodFlags" and internal method flags
6218 so that there is no longer any confusion between the two.
6220 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
6222 Debugger: Now lock the namespace for duration of a namespace dump.
6224 issues if the namespace is changing dynamically underneath the debugger.
6225 Especially affects temporary namespace nodes, since the debugger displays
6228 Updated the ordering of include files. The ACPICA headers should appear
6229 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
6231 any necessary compiler-specific defines, etc. Affects the ACPI-related
6235 Updated all ACPICA copyrights and signons to 2011. Added the 2011
6237 to all module headers and signons, including the Linux header. This
6239 virtually every file in the ACPICA core subsystem, iASL compiler, and all
6242 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
6243 project files for VC++ 6.0 are now obsolete. New project files can be
6245 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
6248 Example Code and Data Size: These are the sizes for the OS-independent
6249 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
6250 debug version of the code includes the debug output trace mechanism and
6252 much larger code and data size.
6254 Previous Release (VC 6.0):
6255 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6256 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6257 Current Release (VC 9.0):
6258 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6259 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6261 2) iASL Compiler/Disassembler and Tools:
6263 iASL: Added generic data types to the Data Table compiler. Add "generic"
6265 types such as UINT32, String, Unicode, etc., to simplify the generation
6267 platform-defined tables such as UEFI. Lin Ming.
6269 iASL: Added listing support for the Data Table Compiler. Adds listing
6271 (-l) to display actual binary output for each line of input code.
6273 ----------------------------------------
6274 09 December 2010. Summary of changes for version 20101209:
6276 1) ACPI CA Core Subsystem:
6278 Completed the major overhaul of the GPE support code that was begun in
6280 2010. Major features include: removal of _PRW execution in ACPICA (host
6281 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
6282 changes to existing interfaces, simplification of GPE handler operation,
6284 a handful of new interfaces:
6290 One new file, evxfgpe.c to consolidate all external GPE interfaces.
6292 See the ACPICA Programmer Reference for full details and programming
6293 information. See the new section 4.4 "General Purpose Event (GPE)
6295 for a full overview, and section 8.7 "ACPI General Purpose Event
6297 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
6299 Bob Moore, Rafael Wysocki.
6301 Implemented a new GPE feature for Windows compatibility, the "Implicit
6303 GPE Notify". This feature will automatically issue a Notify(2) on a
6305 when a Wake GPE is received if there is no corresponding GPE method or
6306 handler. ACPICA BZ 870.
6308 Fixed a problem with the Scope() operator during table parse and load
6310 During load phase (table load or method execution), the scope operator
6312 not enter the target into the namespace. Instead, it should open a new
6314 at the target location. Linux BZ 19462, ACPICA BZ 882.
6316 Example Code and Data Size: These are the sizes for the OS-independent
6317 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6318 debug version of the code includes the debug output trace mechanism and
6320 much larger code and data size.
6323 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6324 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6326 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6327 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6329 2) iASL Compiler/Disassembler and Tools:
6331 iASL: Relax the alphanumeric restriction on _CID strings. These strings
6333 "bus-specific" per the ACPI specification, and therefore any characters
6335 acceptable. The only checks that can be performed are for a null string
6337 perhaps for a leading asterisk. ACPICA BZ 886.
6339 iASL: Fixed a problem where a syntax error that caused a premature EOF
6340 condition on the source file emitted a very confusing error message. The
6341 premature EOF is now detected correctly. ACPICA BZ 891.
6343 Disassembler: Decode the AccessSize within a Generic Address Structure
6345 access, word access, etc.) Note, this field does not allow arbitrary bit
6346 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
6348 New: AcpiNames utility - Example namespace dump utility. Shows an example
6350 ACPICA configuration for a minimal namespace dump utility. Uses table and
6351 namespace managers, but no AML interpreter. Does not add any
6353 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
6354 partition and configure ACPICA. ACPICA BZ 883.
6356 AML Debugger: Increased the debugger buffer size for method return
6358 Was 4K, increased to 16K. Also enhanced error messages for debugger
6360 execution, including the buffer overflow case.
6362 ----------------------------------------
6363 13 October 2010. Summary of changes for version 20101013:
6365 1) ACPI CA Core Subsystem:
6367 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
6369 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
6370 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
6372 Changed the type of the predefined namespace object _TZ from ThermalZone
6374 Device. This was found to be confusing to the host software that
6376 the various thermal zones, since _TZ is not really a ThermalZone.
6379 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
6382 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
6383 string is "Windows 2006 SP2".
6385 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
6387 code automatically repairs _HID-related strings, this type of code is no
6388 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
6391 Example Code and Data Size: These are the sizes for the OS-independent
6392 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6393 debug version of the code includes the debug output trace mechanism and
6395 much larger code and data size.
6398 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6399 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6401 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6402 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6404 2) iASL Compiler/Disassembler and Tools:
6406 iASL: Implemented additional compile-time validation for _HID strings.
6408 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
6411 the string must be exactly seven or eight characters. For both _HID and
6413 strings, all characters must be alphanumeric. ACPICA BZ 874.
6415 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
6416 descriptors that are mostly or all zeros, with the expectation that they
6418 be filled in at runtime. iASL now allows this as long as there is a
6420 tag" (name) associated with the descriptor, which gives the ASL a handle
6421 needed to modify the descriptor. ACPICA BZ 873.
6423 Added single-thread support to the generic Unix application OSL.
6425 for iASL support, this change removes the use of semaphores in the
6427 threaded ACPICA tools/applications - increasing performance. The
6428 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
6429 option. ACPICA BZ 879.
6431 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
6433 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
6435 iASL: Moved all compiler messages to a new file, aslmessages.h.
6437 ----------------------------------------
6438 15 September 2010. Summary of changes for version 20100915:
6440 1) ACPI CA Core Subsystem:
6442 Removed the AcpiOsDerivePciId OSL interface. The various host
6444 of this function were not OS-dependent and are now obsolete and can be
6445 removed from all host OSLs. This function has been replaced by
6446 AcpiHwDerivePciId, which is now part of the ACPICA core code.
6447 AcpiHwDerivePciId has been implemented without recursion. Adds one new
6448 module, hwpci.c. ACPICA BZ 857.
6450 Implemented a dynamic repair for _HID and _CID strings. The following
6451 problems are now repaired at runtime: 1) Remove a leading asterisk in the
6452 string, and 2) the entire string is uppercased. Both repairs are in
6453 accordance with the ACPI specification and will simplify host driver
6457 The ACPI_THREAD_ID type is no longer configurable, internally it is now
6458 always UINT64. This simplifies the ACPICA code, especially any printf
6460 UINT64 is the only common data type for all thread_id types across all
6461 operating systems. It is now up to the host OSL to cast the native
6463 type to UINT64 before returning the value to ACPICA (via
6465 Lin Ming, Bob Moore.
6467 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
6469 keyword is not standard across compilers, and this type allows inline to
6471 configured on a per-compiler basis. Lin Ming.
6473 Made the system global AcpiGbl_SystemAwakeAndRunning publically
6475 Added an extern for this boolean in acpixf.h. Some hosts utilize this
6477 during suspend/restore operations. ACPICA BZ 869.
6479 All code that implements error/warning messages with the "ACPI:" prefix
6481 been moved to a new module, utxferror.c.
6483 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
6485 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
6487 Example Code and Data Size: These are the sizes for the OS-independent
6488 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6489 debug version of the code includes the debug output trace mechanism and
6491 much larger code and data size.
6494 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6495 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6497 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6498 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6500 2) iASL Compiler/Disassembler and Tools:
6502 iASL/Disassembler: Write ACPI errors to stderr instead of the output
6504 This keeps the output files free of random error messages that may
6506 from within the namespace/interpreter code. Used this opportunity to
6508 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
6509 866. Lin Ming, Bob Moore.
6511 Tools: update some printfs for ansi warnings on size_t. Handle width
6513 of size_t on 32-bit versus 64-bit generations. Lin Ming.
6515 ----------------------------------------
6516 06 August 2010. Summary of changes for version 20100806:
6518 1) ACPI CA Core Subsystem:
6520 Designed and implemented a new host interface to the _OSI support code.
6522 will allow the host to dynamically add or remove multiple _OSI strings,
6524 well as install an optional handler that is called for each _OSI
6526 Also added a new AML debugger command, 'osi' to display and modify the
6528 _OSI string table, and test support in the AcpiExec utility. See the
6530 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
6532 AcpiInstallInterface - Add an _OSI string.
6533 AcpiRemoveInterface - Delete an _OSI string.
6534 AcpiInstallInterfaceHandler - Install optional _OSI handler.
6536 AcpiOsValidateInterface - no longer used.
6538 source/components/utilities/utosi.c
6540 Re-introduced the support to enable multi-byte transfers for Embedded
6541 Controller (EC) operation regions. A reported problem was found to be a
6543 in the host OS, not in the multi-byte support. Previously, the maximum
6545 size passed to the EC operation region handler was a single byte. There
6547 often EC Fields larger than one byte that need to be transferred, and it
6549 useful for the EC driver to lock these as a single transaction. This
6551 enables single transfers larger than 8 bits. This effectively changes the
6552 access to the EC space from ByteAcc to AnyAcc, and will probably require
6553 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
6555 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
6557 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
6558 prototype in acpiosxf.h had the output value pointer as a (void *).
6559 It should be a (UINT64 *). This may affect some host OSL code.
6561 Fixed a couple problems with the recently modified Linux makefiles for
6563 and AcpiExec. These new makefiles place the generated object files in the
6564 local directory so that there can be no collisions between the files that
6566 shared between them that are compiled with different options.
6568 Example Code and Data Size: These are the sizes for the OS-independent
6569 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6570 debug version of the code includes the debug output trace mechanism and
6572 much larger code and data size.
6575 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6576 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6578 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6579 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6581 2) iASL Compiler/Disassembler and Tools:
6583 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
6585 namespace from and disassemble an entire group of AML files. Useful for
6586 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
6588 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
6590 iASL: Allow multiple invocations of -e option. This change allows
6592 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6596 ----------------------------------------
6597 02 July 2010. Summary of changes for version 20100702:
6599 1) ACPI CA Core Subsystem:
6601 Implemented several updates to the recently added GPE reference count
6602 support. The model for "wake" GPEs is changing to give the host OS
6604 control of these GPEs. Eventually, the ACPICA core will not execute any
6606 methods, since the host already must execute them. Also, additional
6608 were made to help ensure that the reference counts are kept in proper
6609 synchronization with reality. Rafael J. Wysocki.
6611 1) Ensure that GPEs are not enabled twice during initialization.
6612 2) Ensure that GPE enable masks stay in sync with the reference count.
6613 3) Do not inadvertently enable GPEs when writing GPE registers.
6614 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6615 interface. This interface will set or clear individual GPEs for wakeup.
6616 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6618 are now used for "runtime" GPEs only.
6620 Changed the behavior of the GPE install/remove handler interfaces. The
6623 no longer disabled during this process, as it was found to cause problems
6625 some machines. Rafael J. Wysocki.
6627 Reverted a change introduced in version 20100528 to enable Embedded
6628 Controller multi-byte transfers. This change was found to cause problems
6630 Index Fields and possibly Bank Fields. It will be reintroduced when these
6631 problems have been resolved.
6633 Fixed a problem with references to Alias objects within Package Objects.
6635 reference to an Alias within the definition of a Package was not always
6636 resolved properly. Aliases to objects like Processors, Thermal zones,
6638 were resolved to the actual object instead of a reference to the object
6641 should be. Package objects are only allowed to contain integer, string,
6642 buffer, package, and reference objects. Redhat bugzilla 608648.
6644 Example Code and Data Size: These are the sizes for the OS-independent
6645 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6646 debug version of the code includes the debug output trace mechanism and
6648 much larger code and data size.
6651 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6652 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6654 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6655 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6657 2) iASL Compiler/Disassembler and Tools:
6659 iASL: Implemented a new compiler subsystem to allow definition and
6660 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6662 are called "ACPI Data Tables", and the new compiler is the "Data Table
6663 Compiler". This compiler is intended to simplify the existing error-prone
6664 process of creating these tables for the BIOS, as well as allowing the
6665 disassembly, modification, recompilation, and override of existing ACPI
6667 tables. See the iASL User Guide for detailed information.
6669 iASL: Implemented a new Template Generator option in support of the new
6671 Table Compiler. This option will create examples of all known ACPI tables
6672 that can be used as the basis for table development. See the iASL
6673 documentation and the -T option.
6675 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6678 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6679 object files in the local directory so that there can be no collisions
6680 between the shared files between them that are generated with different
6683 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6685 the #define __APPLE__ to enable this support.
6687 ----------------------------------------
6688 28 May 2010. Summary of changes for version 20100528:
6690 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6691 available at www.acpi.info. This is primarily an errata release.
6693 1) ACPI CA Core Subsystem:
6695 Undefined ACPI tables: We are looking for the definitions for the
6697 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6699 Implemented support to enable multi-byte transfers for Embedded
6701 (EC) operation regions. Previously, the maximum data size passed to the
6703 operation region handler was a single byte. There are often EC Fields
6705 than one byte that need to be transferred, and it is useful for the EC
6707 to lock these as a single transaction. This change enables single
6709 larger than 8 bits. This effectively changes the access to the EC space
6711 ByteAcc to AnyAcc, and will probably require changes to the host OS
6713 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6715 transfers. Alexey Starikovskiy, Lin Ming
6717 Implemented a performance enhancement for namespace search and access.
6719 change enhances the performance of namespace searches and walks by adding
6721 backpointer to the parent in each namespace node. On large namespaces,
6723 change can improve overall ACPI performance by up to 9X. Adding a pointer
6725 each namespace node increases the overall size of the internal namespace
6727 about 5%, since each namespace entry usually consists of both a namespace
6728 node and an ACPI operand object. However, this is the first growth of the
6729 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6731 Implemented a performance optimization that reduces the number of
6733 walks. On control method exit, only walk the namespace if the method is
6735 to have created namespace objects outside of its local scope. Previously,
6737 entire namespace was traversed on each control method exit. This change
6739 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6742 Added support to truncate I/O addresses to 16 bits for Windows
6744 Some ASL code has been seen in the field that inadvertently has bits set
6745 above bit 15. This feature is optional and is enabled if the BIOS
6747 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6750 Added support to limit the maximum time for the ASL Sleep() operator. To
6751 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6752 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6755 Added run-time validation support for the _WDG and_WED Microsoft
6757 methods. These objects are defined by "Windows Instrumentation", and are
6759 part of the ACPI spec. ACPICA BZ 860.
6761 Expanded all statistic counters used during namespace and device
6762 initialization from 16 to 32 bits in order to support very large
6765 Replaced all instances of %d in printf format specifiers with %u since
6767 all integers in ACPICA are unsigned.
6769 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6773 Example Code and Data Size: These are the sizes for the OS-independent
6774 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6775 debug version of the code includes the debug output trace mechanism and
6777 much larger code and data size.
6780 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6781 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6783 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6784 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6786 2) iASL Compiler/Disassembler and Tools:
6788 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6789 methods. These objects are defined by "Windows Instrumentation", and are
6791 part of the ACPI spec. ACPICA BZ 860.
6793 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6794 option will disable the tracking mechanism, which improves performance
6797 AcpiExec: Restructured the command line options into -d (disable) and -e
6800 ----------------------------------------
6801 28 April 2010. Summary of changes for version 20100428:
6803 1) ACPI CA Core Subsystem:
6805 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6806 including FADT-based and GPE Block Devices, execute any _PRW methods in
6808 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6809 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6810 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6811 Devices. Provides compatibility with other ACPI implementations. Two new
6812 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6815 Fixed a regression introduced in version 20100331 within the table
6817 where initial table loading could fail. This was introduced in the fix
6819 AcpiReallocateRootTable. Also, renamed some of fields in the table
6821 data structures to clarify their meaning and use.
6823 Fixed a possible allocation overrun during internal object copy in
6824 AcpiUtCopySimpleObject. The original code did not correctly handle the
6826 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6829 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6830 possible access beyond end-of-allocation. Also, now fully validate
6832 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6834 Example Code and Data Size: These are the sizes for the OS-independent
6835 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6836 debug version of the code includes the debug output trace mechanism and
6838 much larger code and data size.
6841 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6842 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6844 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6845 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6847 2) iASL Compiler/Disassembler and Tools:
6849 iASL: Implemented Min/Max/Len/Gran validation for address resource
6850 descriptors. This change implements validation for the address fields
6852 are common to all address-type resource descriptors. These checks are
6853 implemented: Checks for valid Min/Max, length within the Min/Max window,
6854 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6856 table 6-40 in the ACPI 4.0a specification. Also split the large
6858 and aslrestype2.c files into five new files. ACPICA BZ 840.
6860 iASL: Added support for the _Wxx predefined names. This support was
6862 and these names were not recognized by the compiler as valid predefined
6863 names. ACPICA BZ 851.
6865 iASL: Added an error for all predefined names that are defined to return
6867 value and thus must be implemented as Control Methods. These include all
6869 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6870 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6872 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6874 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6876 dynamically loaded via the Load() operator. Also cleaned up output for
6879 ta and -tc options. ACPICA BZ 853.
6881 Tests: Added a new file with examples of extended iASL error checking.
6882 Demonstrates the advanced error checking ability of the iASL compiler.
6883 Available at tests/misc/badcode.asl.
6885 ----------------------------------------
6886 31 March 2010. Summary of changes for version 20100331:
6888 1) ACPI CA Core Subsystem:
6890 Completed a major update for the GPE support in order to improve support
6892 shared GPEs and to simplify both host OS and ACPICA code. Added a
6894 count mechanism to support shared GPEs that require multiple device
6896 Several external interfaces have changed. One external interface has been
6897 removed. One new external interface was added. Most of the GPE external
6898 interfaces now use the GPE spinlock instead of the events mutex (and the
6899 Flags parameter for many GPE interfaces has been removed.) See the
6901 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6903 Wysocki. ACPICA BZ 831.
6906 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6912 Implemented write support for DataTable operation regions. These regions
6914 defined via the DataTableRegion() operator. Previously, only read support
6916 implemented. The ACPI specification allows DataTableRegions to be
6920 Implemented a new subsystem option to force a copy of the DSDT to local
6921 memory. Optionally copy the entire DSDT to local memory (instead of
6923 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6925 the original DSDT, creating the need for this option. Default is FALSE,
6929 Implemented detection of a corrupted or replaced DSDT. This change adds
6930 support to detect a DSDT that has been corrupted and/or replaced from
6932 the OS (by firmware). This is typically catastrophic for the system, but
6934 been seen on some machines. Once this problem has been detected, the DSDT
6935 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6937 Fixed two problems with AcpiReallocateRootTable during the root table
6939 When copying the root table to the new allocation, the length used was
6940 incorrect. The new size was used instead of the current table size,
6942 too much data was copied. Also, the count of available slots for ACPI
6944 was not set correctly. Alexey Starikovskiy, Bob Moore.
6946 Example Code and Data Size: These are the sizes for the OS-independent
6947 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6948 debug version of the code includes the debug output trace mechanism and
6950 much larger code and data size.
6953 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6954 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6956 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6957 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6959 2) iASL Compiler/Disassembler and Tools:
6961 iASL: Implement limited typechecking for values returned from predefined
6962 control methods. The type of any returned static (unnamed) object is now
6963 validated. For example, Return(1). ACPICA BZ 786.
6965 iASL: Fixed a predefined name object verification regression. Fixes a
6967 introduced in version 20100304. An error is incorrectly generated if a
6968 predefined name is declared as a static named object with a value defined
6969 using the keywords "Zero", "One", or "Ones". Lin Ming.
6971 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6973 reducing the requested registry access rights. ACPICA BZ 842.
6975 Disassembler: fixed a possible fault when generating External()
6977 Introduced in commit ae7d6fd: Properly handle externals with parent-
6979 (carat). Fixes a string length allocation calculation. Lin Ming.
6981 ----------------------------------------
6982 04 March 2010. Summary of changes for version 20100304:
6984 1) ACPI CA Core Subsystem:
6986 Fixed a possible problem with the AML Mutex handling function
6987 AcpiExReleaseMutex where the function could fault under the very rare
6988 condition when the interpreter has blocked, the interpreter lock is
6990 the interpreter is then reentered via the same thread, and attempts to
6991 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6995 Implemented additional configuration support for the AML "Debug Object".
6996 Output from the debug object can now be enabled via a global variable,
6997 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6999 This debug output is now available in the release version of ACPICA
7001 of just the debug version. Also, the entire debug output module can now
7003 configured out of the ACPICA build if desired. One new file added,
7004 executer/exdebug.c. Lin Ming, Bob Moore.
7006 Added header support for the ACPI MCHI table (Management Controller Host
7007 Interface Table). This table was added in ACPI 4.0, but the defining
7009 has only recently become available.
7011 Standardized output of integer values for ACPICA warnings/errors. Always
7013 0x prefix for hex output, always use %u for unsigned integer decimal
7015 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
7017 invocations.) These invocations were converted from the original
7018 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
7020 Example Code and Data Size: These are the sizes for the OS-independent
7021 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7022 debug version of the code includes the debug output trace mechanism and
7024 much larger code and data size.
7027 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
7028 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
7030 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
7031 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
7033 2) iASL Compiler/Disassembler and Tools:
7035 iASL: Implemented typechecking support for static (non-control method)
7036 predefined named objects that are declared with the Name() operator. For
7037 example, the type of this object is now validated to be of type Integer:
7038 Name(_BBN, 1). This change migrates the compiler to using the core
7040 name table instead of maintaining a local version. Added a new file,
7041 aslpredef.c. ACPICA BZ 832.
7043 Disassembler: Added support for the ACPI 4.0 MCHI table.
7045 ----------------------------------------
7046 21 January 2010. Summary of changes for version 20100121:
7048 1) ACPI CA Core Subsystem:
7050 Added the 2010 copyright to all module headers and signons. This affects
7051 virtually every file in the ACPICA core subsystem, the iASL compiler, the
7052 tools/utilities, and the test suites.
7054 Implemented a change to the AcpiGetDevices interface to eliminate
7056 invocations of the _STA method. In the case where a specific _HID is
7057 requested, do not run _STA until a _HID match is found. This eliminates
7058 potentially dozens of _STA calls during a search for a particular
7060 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
7062 Implemented an additional repair for predefined method return values.
7064 to repair unexpected NULL elements within returned Package objects.
7067 Integer of value zero, a NULL String, or a zero-length Buffer as
7069 ACPICA BZ 818. Lin Ming, Bob Moore.
7071 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
7073 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
7075 64-bit AML integers). It is now obsolete and this change removes it from
7077 ACPICA code base, replaced by UINT64. The original typedef has been
7079 for now for compatibility with existing device driver code. ACPICA BZ
7082 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
7084 the parse tree object.
7086 Added additional warning options for the gcc-4 generation. Updated the
7088 accordingly. This includes some code restructuring to eliminate
7090 code, elimination of some gotos, elimination of unused return values,
7092 additional casting, and removal of redundant declarations.
7094 Example Code and Data Size: These are the sizes for the OS-independent
7095 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7096 debug version of the code includes the debug output trace mechanism and
7098 much larger code and data size.
7101 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
7102 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
7104 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
7105 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
7107 2) iASL Compiler/Disassembler and Tools:
7109 No functional changes for this release.
7111 ----------------------------------------
7112 14 December 2009. Summary of changes for version 20091214:
7114 1) ACPI CA Core Subsystem:
7116 Enhanced automatic data type conversions for predefined name repairs.
7118 change expands the automatic repairs/conversions for predefined name
7120 values to make Integers, Strings, and Buffers fully interchangeable.
7123 Buffer can be converted to a Package of Integers if necessary. The
7125 module was completely restructured. Lin Ming, Bob Moore.
7127 Implemented automatic removal of null package elements during predefined
7129 repairs. This change will automatically remove embedded and trailing NULL
7130 package elements from returned package objects that are defined to
7133 variable number of sub-packages. The driver is then presented with a
7135 with no null elements to deal with. ACPICA BZ 819.
7137 Implemented a repair for the predefined _FDE and _GTM names. The expected
7138 return value for both names is a Buffer of 5 DWORDs. This repair fixes
7140 possible problems (both seen in the field), where a package of integers
7142 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
7145 Implemented additional module-level code support. This change will
7147 execute module-level code that is not at the root of the namespace (under
7149 Device object, etc.). Now executes the code within the current scope
7151 of the root. ACPICA BZ 762. Lin Ming.
7153 Fixed possible mutex acquisition errors when running _REG methods. Fixes
7155 problem where mutex errors can occur when running a _REG method that is
7157 the same scope as a method-defined operation region or an operation
7159 under a module-level IF block. This type of code is rare, so the problem
7161 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
7163 Fixed a possible memory leak during module-level code execution. An
7165 could be leaked for each block of executed module-level code if the
7166 interpreter slack mode is enabled This change deletes any implicitly
7168 object from the module-level code block. Lin Ming.
7170 Removed messages for successful predefined repair(s). The repair
7172 was considered too wordy. Now, messages are only unconditionally emitted
7174 the return object cannot be repaired. Existing messages for successful
7175 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
7178 Example Code and Data Size: These are the sizes for the OS-independent
7179 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7180 debug version of the code includes the debug output trace mechanism and
7182 much larger code and data size.
7185 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7186 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7188 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
7189 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
7191 2) iASL Compiler/Disassembler and Tools:
7193 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
7195 were no longer automatically removed at the termination of the compile.
7197 acpiexec: Implemented the -f option to specify default region fill value.
7198 This option specifies the value used to initialize buffers that simulate
7199 operation regions. Default value is zero. Useful for debugging problems
7201 depend on a specific initial value for a region or field.
7203 ----------------------------------------
7204 12 November 2009. Summary of changes for version 20091112:
7206 1) ACPI CA Core Subsystem:
7208 Implemented a post-order callback to AcpiWalkNamespace. The existing
7209 interface only has a pre-order callback. This change adds an additional
7210 parameter for a post-order callback which will be more useful for bus
7212 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
7214 Modified the behavior of the operation region memory mapping cache for
7215 SystemMemory. Ensure that the memory mappings created for operation
7217 do not cross 4K page boundaries. Crossing a page boundary while mapping
7218 regions can cause kernel warnings on some hosts if the pages have
7220 attributes. Such regions are probably BIOS bugs, and this is the
7222 Linux BZ 14445. Lin Ming.
7224 Implemented an automatic repair for predefined methods that must return
7225 sorted lists. This change will repair (by sorting) packages returned by
7227 _PSS, and _TSS. Drivers can now assume that the packages are correctly
7229 and do not contain NULL package elements. Adds one new file,
7230 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
7232 Fixed a possible fault during predefined name validation if a return
7234 object contains NULL elements. Also adds a warning if a NULL element is
7235 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
7237 include repair or removal of all such NULL elements where possible.
7239 Implemented additional module-level executable AML code support. This
7241 will execute module-level code that is not at the root of the namespace
7242 (under a Device object, etc.) at table load time. Module-level executable
7244 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
7246 Implemented a new internal function to create Integer objects. This
7248 simplifies miscellaneous object creation code. ACPICA BZ 823.
7250 Reduced the severity of predefined repair messages, Warning to Info.
7252 the object was successfully repaired, a warning is too severe. Reduced to
7254 info message for now. These messages may eventually be changed to debug-
7258 Example Code and Data Size: These are the sizes for the OS-independent
7259 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7260 debug version of the code includes the debug output trace mechanism and
7262 much larger code and data size.
7265 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7266 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7268 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7269 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7271 2) iASL Compiler/Disassembler and Tools:
7273 iASL: Implemented Switch() with While(1) so that Break works correctly.
7275 change correctly implements the Switch operator with a surrounding
7277 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
7279 iASL: Added a message if a package initializer list is shorter than
7281 length. Adds a new remark for a Package() declaration if an initializer
7283 exists, but is shorter than the declared length of the package. Although
7284 technically legal, this is probably a coding error and it is seen in the
7285 field. ACPICA BZ 815. Lin Ming, Bob Moore.
7287 iASL: Fixed a problem where the compiler could fault after the maximum
7289 of errors was reached (200).
7291 acpixtract: Fixed a possible warning for pointer cast if the compiler
7293 level set very high.
7295 ----------------------------------------
7296 13 October 2009. Summary of changes for version 20091013:
7298 1) ACPI CA Core Subsystem:
7300 Fixed a problem where an Operation Region _REG method could be executed
7302 than once. If a custom address space handler is installed by the host
7304 the "initialize operation regions" phase of the ACPICA initialization,
7306 _REG methods for that address space could be executed twice. This change
7307 fixes the problem. ACPICA BZ 427. Lin Ming.
7309 Fixed a possible memory leak for the Scope() ASL operator. When the exact
7310 invocation of "Scope(\)" is executed (change scope to root), one internal
7311 operand object was leaked. Lin Ming.
7313 Implemented a run-time repair for the _MAT predefined method. If the _MAT
7314 return value is defined as a Field object in the AML, and the field
7315 size is less than or equal to the default width of an integer (32 or
7317 can incorrectly return an Integer instead of a Buffer. ACPICA now
7318 automatically repairs this problem. ACPICA BZ 810.
7320 Implemented a run-time repair for the _BIF and _BIX predefined methods.
7322 "OEM Information" field is often incorrectly returned as an Integer with
7323 value zero if the field is not supported by the platform. This is due to
7325 ambiguity in the ACPI specification. The field should always be a string.
7326 ACPICA now automatically repairs this problem by returning a NULL string
7327 within the returned Package. ACPICA BZ 807.
7329 Example Code and Data Size: These are the sizes for the OS-independent
7330 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7331 debug version of the code includes the debug output trace mechanism and
7333 much larger code and data size.
7336 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7337 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7339 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7340 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7342 2) iASL Compiler/Disassembler and Tools:
7344 Disassembler: Fixed a problem where references to external symbols that
7345 contained one or more parent-prefixes (carats) were not handled
7347 possibly causing a fault. ACPICA BZ 806. Lin Ming.
7349 Disassembler: Restructured the code so that all functions that handle
7350 external symbols are in a single module. One new file is added,
7353 AML Debugger: Added a max count argument for the Batch command (which
7354 executes multiple predefined methods within the namespace.)
7356 iASL: Updated the compiler documentation (User Reference.) Available at
7357 http://www.acpica.org/documentation/. ACPICA BZ 750.
7359 AcpiXtract: Updated for Lint and other formatting changes. Close all open
7362 ----------------------------------------
7363 03 September 2009. Summary of changes for version 20090903:
7365 1) ACPI CA Core Subsystem:
7367 For Windows Vista compatibility, added the automatic execution of an _INI
7368 method located at the namespace root (\_INI). This method is executed at
7369 table load time. This support is in addition to the automatic execution
7371 \_SB._INI. Lin Ming.
7373 Fixed a possible memory leak in the interpreter for AML package objects
7375 the package initializer list is longer than the defined size of the
7377 This apparently can only happen if the BIOS changes the package size on
7379 fly (seen in a _PSS object), as ASL compilers do not allow this. The
7380 interpreter will truncate the package to the defined size (and issue an
7382 message), but previously could leave the extra objects undeleted if they
7384 pre-created during the argument processing (such is the case if the
7386 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
7388 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
7389 This has been reported in the field. Previously, ACPICA would zero out
7391 buffer/string. Now, the operation is treated as a noop. Provides Windows
7392 compatibility. ACPICA BZ 803. Lin Ming.
7394 Removed an extraneous error message for ASL constructs of the form
7395 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
7397 are seen in many BIOSs and are once again treated as NOOPs and no error
7399 emitted when they are encountered. ACPICA BZ 785.
7401 Fixed an extraneous warning message if a _DSM reserved method returns a
7402 Package object. _DSM can return any type of object, so validation on the
7403 return type cannot be performed. ACPICA BZ 802.
7405 Example Code and Data Size: These are the sizes for the OS-independent
7406 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7407 debug version of the code includes the debug output trace mechanism and
7409 much larger code and data size.
7412 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7413 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7415 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7416 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7418 2) iASL Compiler/Disassembler and Tools:
7420 iASL: Fixed a problem with the use of the Alias operator and Resource
7421 Templates. The correct alias is now constructed and no error is emitted.
7424 iASL: Implemented the -I option to specify additional search directories
7426 include files. Allows multiple additional search paths for include files.
7427 Directories are searched in the order specified on the command line
7429 the local directory is searched.) ACPICA BZ 800.
7431 iASL: Fixed a problem where the full pathname for include files was not
7432 emitted for warnings/errors. This caused the IDE support to not work
7433 properly. ACPICA BZ 765.
7435 iASL: Implemented the -@ option to specify a Windows-style response file
7436 containing additional command line options. ACPICA BZ 801.
7438 AcpiExec: Added support to load multiple AML files simultaneously (such
7441 DSDT and multiple SSDTs). Also added support for wildcards within the AML
7442 pathname. These features allow all machine tables to be easily loaded and
7443 debugged together. ACPICA BZ 804.
7445 Disassembler: Added missing support for disassembly of HEST table Error
7449 ----------------------------------------
7450 30 July 2009. Summary of changes for version 20090730:
7452 The ACPI 4.0 implementation for ACPICA is complete with this release.
7454 1) ACPI CA Core Subsystem:
7456 ACPI 4.0: Added header file support for all new and changed ACPI tables.
7457 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
7459 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
7461 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
7463 have been some ACPI 4.0 changes to other existing tables. Split the large
7464 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
7466 ACPI 4.0: Implemented predefined name validation for all new names. There
7468 31 new names in ACPI 4.0. The predefined validation module was split into
7470 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
7472 Implemented support for so-called "module-level executable code". This is
7473 executable AML code that exists outside of any control method and is
7475 to be executed at table load time. Although illegal since ACPI 2.0, this
7477 of code still exists and is apparently still being created. Blocks of
7479 code are now detected and executed as intended. Currently, the code
7481 must exist under either an If, Else, or While construct; these are the
7482 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
7484 Implemented an automatic dynamic repair for predefined names that return
7485 nested Package objects. This applies to predefined names that are defined
7487 return a variable-length Package of sub-packages. If the number of sub-
7488 packages is one, BIOS code is occasionally seen that creates a simple
7490 package with no sub-packages. This code attempts to fix the problem by
7491 wrapping a new package object around the existing package. These methods
7493 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
7497 Fixed a regression introduced in 20090625 for the AcpiGetDevices
7499 The _HID/_CID matching was broken and no longer matched IDs correctly.
7503 Fixed a problem with AcpiReset where the reset would silently fail if the
7504 register was one of the protected I/O ports. AcpiReset now bypasses the
7506 validation mechanism. This may eventually be driven into the
7510 Fixed a regression related to the recent update of the AcpiRead/Write
7511 interfaces. A sleep/suspend could fail if the optional PM2 Control
7513 does not exist during an attempt to write the Bus Master Arbitration bit.
7514 (However, some hosts already delete the code that writes this bit, and
7516 code may in fact be obsolete at this date.) ACPICA BZ 799.
7518 Fixed a problem where AcpiTerminate could fault if inadvertently called
7520 in succession. ACPICA BZ 795.
7522 Example Code and Data Size: These are the sizes for the OS-independent
7523 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7524 debug version of the code includes the debug output trace mechanism and
7526 much larger code and data size.
7529 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7530 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7532 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7533 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7535 2) iASL Compiler/Disassembler and Tools:
7537 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
7538 changes to existing tables. ACPICA BZ 775.
7540 ----------------------------------------
7541 25 June 2009. Summary of changes for version 20090625:
7543 The ACPI 4.0 Specification was released on June 16 and is available at
7544 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
7545 continue for the next few releases.
7547 1) ACPI CA Core Subsystem:
7549 ACPI 4.0: Implemented interpreter support for the IPMI operation region
7550 address space. Includes support for bi-directional data buffers and an
7552 address space handler (to be installed by an IPMI device driver.) ACPICA
7556 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
7558 support in both the header files and the disassembler.
7560 Completed a major update for the AcpiGetObjectInfo external interface.
7562 - Support for variable, unlimited length HID, UID, and CID strings.
7563 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
7565 - Call the _SxW power methods on behalf of a device object.
7566 - Determine if a device is a PCI root bridge.
7567 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
7568 These changes will require an update to all callers of this interface.
7570 the updated ACPICA Programmer Reference for details. One new source file
7572 been added - utilities/utids.c. ACPICA BZ 368, 780.
7574 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
7575 transfers. The Value parameter has been extended from 32 bits to 64 bits
7577 order to support new ACPI 4.0 tables. These changes will require an
7580 all callers of these interfaces. See the ACPICA Programmer Reference for
7581 details. ACPICA BZ 768.
7583 Fixed several problems with AcpiAttachData. The handler was not invoked
7585 the host node was deleted. The data sub-object was not automatically
7587 when the host node was deleted. The interface to the handler had an
7589 parameter, this was removed. ACPICA BZ 778.
7591 Enhanced the function that dumps ACPI table headers. All non-printable
7592 characters in the string fields are now replaced with '?' (Signature,
7594 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7595 these fields are occasionally seen in the field. ACPICA BZ 788.
7597 Fixed a problem with predefined method repair code where the code that
7598 attempts to repair/convert an object of incorrect type is only executed
7600 the first time the predefined method is called. The mechanism that
7602 warnings on subsequent calls was interfering with the repair mechanism.
7605 Fixed a possible memory leak in the predefined validation/repair code
7608 buffer is automatically converted to an expected string object.
7610 Removed obsolete 16-bit files from the distribution and from the current
7612 tree head. ACPICA BZ 776.
7614 Example Code and Data Size: These are the sizes for the OS-independent
7615 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7616 debug version of the code includes the debug output trace mechanism and
7618 much larger code and data size.
7621 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7622 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7624 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7625 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7627 2) iASL Compiler/Disassembler and Tools:
7629 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7630 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7632 ACPI 4.0: iASL - implemented compile-time validation support for all new
7633 predefined names and control methods (31 total). ACPICA BZ 769.
7635 ----------------------------------------
7636 21 May 2009. Summary of changes for version 20090521:
7638 1) ACPI CA Core Subsystem:
7640 Disabled the preservation of the SCI enable bit in the PM1 control
7642 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7645 a "preserved" bit - "OSPM always preserves this bit position", section
7646 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7647 because the bit needs to be explicitly set by the OS as a workaround. No
7648 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7649 attempts to preserve this bit.
7651 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7652 incorrectly formed _PRT package could cause a fault. Added validation to
7653 ensure that each package element is actually a sub-package.
7655 Implemented a new interface to install or override a single control
7657 AcpiInstallMethod. This interface is useful when debugging in order to
7659 an existing method or to install a missing method without having to
7661 the entire ACPI table. See the ACPICA Programmer Reference for use and
7662 examples. Lin Ming, Bob Moore.
7664 Fixed several reference count issues with the DdbHandle object that is
7665 created from a Load or LoadTable operator. Prevent premature deletion of
7667 object. Also, mark the object as invalid once the table has been
7669 This is needed because the handle itself may not be deleted after the
7671 unload, depending on whether it has been stored in a named object by the
7674 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7675 mutexes of the same sync level are acquired but then not released in
7677 opposite order, the internally maintained Current Sync Level becomes
7679 and can cause subsequent execution errors. ACPICA BZ 471.
7681 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7682 specification has been changed to make the SyncLevel for mutex objects
7684 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7686 same as the current sync level. This makes more sense than the previous
7688 (SyncLevel less than or equal). This change updates the code to match the
7691 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7693 (local) cache must be locked during all cache object deletions. Andrew
7696 Updated the Load operator to use operation region interfaces. This
7698 direct memory mapping with region access calls. Now, all region accesses
7700 through the installed region handler as they should.
7702 Simplified and optimized the NsGetNextNode function. Reduced parameter
7704 and reduced code for this frequently used function.
7706 Example Code and Data Size: These are the sizes for the OS-independent
7707 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7708 debug version of the code includes the debug output trace mechanism and
7710 much larger code and data size.
7713 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7714 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7716 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7717 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7719 2) iASL Compiler/Disassembler and Tools:
7721 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7723 with sub-table disassembly and handling invalid sub-tables. Attempt
7725 after an invalid sub-table ID.
7727 ----------------------------------------
7728 22 April 2009. Summary of changes for version 20090422:
7730 1) ACPI CA Core Subsystem:
7732 Fixed a compatibility issue with the recently released I/O port
7734 mechanism. For windows compatibility, 1) On a port protection violation,
7735 simply ignore the request and do not return an exception (allow the
7737 method to continue execution.) 2) If only part of the request overlaps a
7738 protected port, read/write the individual ports that are not protected.
7742 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7744 breaks into the AML debugger if the debugger is present. This matches the
7745 ACPI-defined behavior.
7747 Fixed several possible warnings related to the use of the configurable
7748 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7749 pointer with no warnings. Also fixes several warnings in printf-like
7750 statements for the 64-bit build when the type is configured as a pointer.
7753 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7755 warning options.) Examples include printf formats, aliasing, unused
7757 missing prototypes, missing switch default statements, use of non-ANSI
7758 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7760 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7762 Example Code and Data Size: These are the sizes for the OS-independent
7763 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7764 debug version of the code includes the debug output trace mechanism and
7766 much larger code and data size.
7769 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7770 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7772 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7773 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7775 2) iASL Compiler/Disassembler and Tools:
7777 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7782 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7784 correctly digest Windows/DOS formatted files (with CR/LF).
7786 iASL: Added a new option for "quiet mode" (-va) that produces only the
7787 compilation summary, not individual errors and warnings. Useful for large
7790 AcpiExec: Implemented a new option (-z) to enable a forced
7792 timeout that can be used to detect hang conditions during execution of
7794 code (includes both internal semaphores and AML-defined mutexes and
7797 Added new makefiles for the generation of acpica in a generic unix-like
7798 environment. These makefiles are intended to generate the acpica tools
7800 utilities from the original acpica git source tree structure.
7802 Test Suites: Updated and cleaned up the documentation files. Updated the
7803 copyrights to 2009, affecting all source files. Use the new version of
7805 with quiet mode. Increased the number of available semaphores in the
7807 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7809 an alternate implementation of the semaphore timeout to allow aslts to
7810 execute fully on Cygwin.
7812 ----------------------------------------
7813 20 March 2009. Summary of changes for version 20090320:
7815 1) ACPI CA Core Subsystem:
7817 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7819 unloads. Added a reader/writer locking mechanism to allow multiple
7821 namespace walks (readers), but block a dynamic table unload until it can
7823 exclusive write access to the namespace. This fixes a problem where a
7825 unload could (possibly catastrophically) delete the portion of the
7827 that is currently being examined by a walk. Adds a new file, utlock.c,
7829 implements the reader/writer lock mechanism. ACPICA BZ 749.
7831 Fixed a regression introduced in version 20090220 where a change to the
7833 handling could cause the ACPICA subsystem to access non-existent I/O
7836 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7838 FADT can contain both 32-bit and 64-bit versions of these addresses.
7839 Previously, the 64-bit versions were favored, meaning that if both 32 and
7841 versions were valid, but not equal, the 64-bit version was used. This was
7842 found to cause some machines to fail. Now, in this case, the 32-bit
7844 is used instead. This now matches the Windows behavior.
7846 Implemented a new mechanism to protect certain I/O ports. Provides
7848 compatibility and protects the standard PC I/O ports from access via AML
7849 code. Adds a new file, hwvalid.c
7851 Fixed a possible extraneous warning message from the FADT support. The
7852 message warns of a 32/64 length mismatch between the legacy and GAS
7853 definitions for a register.
7855 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7857 made obsolete by the port protection mechanism above. It was previously
7859 to validate the entire address range of an operation region, which could
7861 incorrect if the range included illegal ports, but fields within the
7862 operation region did not actually access those ports. Validation is now
7863 performed on a per-field basis instead of the entire region.
7865 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7866 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7868 means a read/modify/write when writing to the register. However, for
7870 registers, writing a one means clear the event. Writing a zero means
7872 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7874 and the ACPICA code now simply always writes a zero to the ignored bit.
7876 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7878 per the ACPI specification, for the control registers, preserve
7879 (read/modify/write) all bits that are defined as either reserved or
7882 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7883 When reading the register, zero the write-only bits as per the ACPI spec.
7884 ACPICA BZ 443. Lin Ming.
7886 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7887 wants to reply true to this request. The Windows strings are the only
7889 through the AML that are tested and known to work properly.
7892 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7893 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7895 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7896 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7898 2) iASL Compiler/Disassembler and Tools:
7900 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7904 ----------------------------------------
7905 20 February 2009. Summary of changes for version 20090220:
7907 1) ACPI CA Core Subsystem:
7909 Optimized the ACPI register locking. Removed locking for reads from the
7911 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7913 not required when reading the single-bit registers. The
7914 AcpiGetRegisterUnlocked function is no longer needed and has been
7916 This will improve performance for reads on these registers. ACPICA BZ
7919 Fixed the parameter validation for AcpiRead/Write. Now return
7920 AE_BAD_PARAMETER if the input register pointer is null, and
7923 the register has an address of zero. Previously, these cases simply
7925 AE_OK. For optional registers such as PM1B status/enable/control, the
7927 should check for a valid register address before calling. ACPICA BZ 748.
7929 Renamed the external ACPI bit register access functions. Renamed
7930 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7931 functions. The new names are AcpiReadBitRegister and
7932 AcpiWriteBitRegister.
7933 Also, restructured the code for these functions by simplifying the code
7935 and condensing duplicate code to reduce code size.
7937 Added new functions to transparently handle the possibly split PM1 A/B
7938 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7940 now handle the split registers for PM1 Status, Enable, and Control.
7945 Added a function to handle the PM1 control registers,
7946 AcpiHwWritePm1Control.
7947 This function writes both of the PM1 control registers (A/B). These
7949 are different than the PM1 A/B status and enable registers in that
7951 values can be written to the A/B registers. Most notably, the SLP_TYP
7953 can be different, as per the values returned from the _Sx predefined
7956 Removed an extra register write within AcpiHwClearAcpiStatus. This
7958 was writing an optional PM1B status register twice. The existing call to
7960 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7962 register. ACPICA BZ 751.
7964 Split out the PM1 Status registers from the FADT. Added new globals for
7966 registers (A/B), similar to the way the PM1 Enable registers are handled.
7967 Instead of overloading the FADT Event Register blocks. This makes the
7969 clearer and less prone to error.
7971 Fixed the warning message for when the platform contains too many ACPI
7973 for the default size of the global root table data structure. The
7975 for the truncation value was incorrect.
7977 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7978 obsolete macro, since it is now a simple reference to ->common.type.
7980 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7982 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7983 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7984 simply SLEEP_TYPE. ACPICA BZ 754.
7986 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7987 function is only needed on 64-bit host operating systems and is thus not
7988 included for 32-bit hosts.
7990 Debug output: print the input and result for invocations of the _OSI
7992 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7994 verbosity of this debug level. Len Brown.
7996 Example Code and Data Size: These are the sizes for the OS-independent
7997 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7998 debug version of the code includes the debug output trace mechanism and
8000 much larger code and data size.
8003 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
8004 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
8006 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
8007 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
8009 2) iASL Compiler/Disassembler and Tools:
8011 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
8012 various legal performance profiles.
8014 ----------------------------------------
8015 23 January 2009. Summary of changes for version 20090123:
8017 1) ACPI CA Core Subsystem:
8019 Added the 2009 copyright to all module headers and signons. This affects
8020 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8021 the tools/utilities.
8023 Implemented a change to allow the host to override any ACPI table,
8025 dynamically loaded tables. Previously, only the DSDT could be replaced by
8027 host. With this change, the AcpiOsTableOverride interface is called for
8029 table found in the RSDT/XSDT during ACPICA initialization, and also
8031 a table is dynamically loaded via the AML Load operator.
8033 Updated FADT flag definitions, especially the Boot Architecture flags.
8035 Debugger: For the Find command, automatically pad the input ACPI name
8037 underscores if the name is shorter than 4 characters. This enables a
8039 with the actual namespace entry which is itself padded with underscores.
8041 Example Code and Data Size: These are the sizes for the OS-independent
8042 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8043 debug version of the code includes the debug output trace mechanism and
8045 much larger code and data size.
8048 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
8049 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
8051 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
8052 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
8054 2) iASL Compiler/Disassembler and Tools:
8056 Fix build error under Bison-2.4.
8058 Dissasembler: Enhanced FADT support. Added decoding of the Boot
8060 flags. Now decode all flags, regardless of the FADT version. Flag output
8061 includes the FADT version which first defined each flag.
8063 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
8065 DSDT). Windows only.
8067 ----------------------------------------
8068 04 December 2008. Summary of changes for version 20081204:
8070 1) ACPI CA Core Subsystem:
8072 The ACPICA Programmer Reference has been completely updated and revamped
8074 this release. This includes updates to the external interfaces, OSL
8075 interfaces, the overview sections, and the debugger reference.
8077 Several new ACPICA interfaces have been implemented and documented in the
8078 programmer reference:
8079 AcpiReset - Writes the reset value to the FADT-defined reset register.
8080 AcpiDisableAllGpes - Disable all available GPEs.
8081 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
8082 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
8083 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
8084 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
8085 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
8087 Most of the public ACPI hardware-related interfaces have been moved to a
8089 file, components/hardware/hwxface.c
8091 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
8092 register lengths within the FADT are now used, and the low level ACPI
8093 register access no longer hardcodes the ACPI register lengths. Given that
8094 there may be some risk in actually trusting the FADT register lengths, a
8096 time option was added to fall back to the default hardcoded lengths if
8098 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
8099 option is set to true for now, and a warning is issued if a suspicious
8101 register length is overridden with the default value.
8103 Fixed a reference count issue in NsRepairObject. This problem was
8105 in version 20081031 as part of a fix to repair Buffer objects within
8108 Added semaphore support to the Linux/Unix application OS-services layer
8109 (OSL). ACPICA BZ 448. Lin Ming.
8111 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
8113 be implemented in the OSL, or will binary semaphores be used instead.
8115 Example Code and Data Size: These are the sizes for the OS-independent
8116 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8117 debug version of the code includes the debug output trace mechanism and
8119 much larger code and data size.
8122 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
8123 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
8125 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
8126 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
8128 2) iASL Compiler/Disassembler and Tools:
8130 iASL: Completed the '-e' option to include additional ACPI tables in
8133 aid with disassembly and External statement generation. ACPICA BZ 742.
8137 iASL: Removed the "named object in while loop" error. The compiler cannot
8138 determine how many times a loop will execute. ACPICA BZ 730.
8140 Disassembler: Implemented support for FADT revision 2 (MS extension).
8144 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
8147 ----------------------------------------
8148 31 October 2008. Summary of changes for version 20081031:
8150 1) ACPI CA Core Subsystem:
8152 Restructured the ACPICA header files into public/private. acpi.h now
8154 only the "public" acpica headers. All other acpica headers are "private"
8156 should not be included by acpica users. One new file, accommon.h is used
8158 include the commonly used private headers for acpica code generation.
8160 plans include moving all private headers to a new subdirectory.
8162 Implemented an automatic Buffer->String return value conversion for
8163 predefined ACPI methods. For these methods (such as _BIF), added
8165 conversion for return objects that are required to be a String, but a
8167 was found instead. This can happen when reading string battery data from
8169 operation region, because it used to be difficult to convert the data
8171 buffer to string from within the ASL. Ensures that the host OS is
8173 with a valid null-terminated string. Linux BZ 11822.
8175 Updated the FACS waking vector interfaces. Split
8176 AcpiSetFirmwareWakingVector
8177 into two: one for the 32-bit vector, another for the 64-bit vector. This
8179 required because the host OS must setup the wake much differently for
8181 vector (real vs. protected mode, etc.) and the interface itself should
8184 deciding which vector to use. Also, eliminated the
8185 GetFirmwareWakingVector
8186 interface, as it served no purpose (only the firmware reads the vector,
8188 only writes the vector.) ACPICA BZ 731.
8190 Implemented a mechanism to escape infinite AML While() loops. Added a
8192 counter to force exit from AML While loops if the count becomes too
8194 This can occur in poorly written AML when the hardware does not respond
8195 within a while loop and the loop does not implement a timeout. The
8197 loop count is configurable. A new exception code is returned when a loop
8199 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
8201 Optimized the execution of AML While loops. Previously, a control state
8202 object was allocated and freed for each execution of the loop. The
8203 optimization is to simply reuse the control state for each iteration.
8205 speeds up the raw loop execution time by about 5%.
8207 Enhanced the implicit return mechanism. For Windows compatibility, return
8209 implicit integer of value zero for methods that contain no executable
8211 Such methods are seen in the field as stubs (presumably), and can cause
8212 drivers to fail if they expect a return value. Lin Ming.
8214 Allow multiple backslashes as root prefixes in namepaths. In a fully
8215 qualified namepath, allow multiple backslash prefixes. This can happen
8217 is seen in the field) because of the use of a double-backslash in strings
8218 (since backslash is the escape character) causing confusion. ACPICA BZ
8222 Emit a warning if two different FACS or DSDT tables are discovered in the
8223 FADT. Checks if there are two valid but different addresses for the FACS
8225 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
8227 Consolidated the method argument count validation code. Merged the code
8229 validates control method argument counts into the predefined validation
8230 module. Eliminates possible multiple warnings for incorrect argument
8233 Implemented ACPICA example code. Includes code for ACPICA initialization,
8234 handler installation, and calling a control method. Available at
8235 source/tools/examples.
8237 Added a global pointer for FACS table to simplify internal FACS access.
8239 the global pointer instead of using AcpiGetTableByIndex for each FACS
8241 This simplifies the code for the Global Lock and the Firmware Waking
8244 Example Code and Data Size: These are the sizes for the OS-independent
8245 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8246 debug version of the code includes the debug output trace mechanism and
8248 much larger code and data size.
8251 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8252 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8254 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
8255 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
8257 2) iASL Compiler/Disassembler and Tools:
8259 iASL: Improved disassembly of external method calls. Added the -e option
8261 allow the inclusion of additional ACPI tables to help with the
8264 method invocations and the generation of external declarations during the
8265 disassembly. Certain external method invocations cannot be disassembled
8266 properly without the actual declaration of the method. Use the -e option
8268 include the table where the external method(s) are actually declared.
8270 useful for disassembling SSDTs that make method calls back to the master
8271 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
8273 -e dsdt.aml ssdt1.aml
8275 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
8276 problem where the use of an alias within a namepath would result in a not
8277 found error or cause the compiler to fault. Also now allows forward
8278 references from the Alias operator itself. ACPICA BZ 738.
8280 ----------------------------------------
8281 26 September 2008. Summary of changes for version 20080926:
8283 1) ACPI CA Core Subsystem:
8285 Designed and implemented a mechanism to validate predefined ACPI methods
8287 objects. This code validates the predefined ACPI objects (objects whose
8289 start with underscore) that appear in the namespace, at the time they are
8290 evaluated. The argument count and the type of the returned object are
8291 validated against the ACPI specification. The purpose of this validation
8293 to detect problems with the BIOS-implemented predefined ACPI objects
8295 the results are returned to the ACPI-related drivers. Future enhancements
8297 include actual repair of incorrect return objects where possible. Two new
8298 files are nspredef.c and acpredef.h.
8300 Fixed a fault in the AML parser if a memory allocation fails during the
8302 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
8304 Fixed an issue with implicit return compatibility. This change improves
8306 implicit return mechanism to be more compatible with the MS interpreter.
8308 Ming, ACPICA BZ 349.
8310 Implemented support for zero-length buffer-to-string conversions. Allow
8312 length strings during interpreter buffer-to-string conversions. For
8314 during the ToDecimalString and ToHexString operators, as well as implicit
8315 conversions. Fiodor Suietov, ACPICA BZ 585.
8317 Fixed two possible memory leaks in the error exit paths of
8318 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
8320 similar in that they use a stack of state objects in order to eliminate
8321 recursion. The stack must be fully unwound and deallocated if an error
8322 occurs. Lin Ming. ACPICA BZ 383.
8324 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
8326 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
8327 Moore ACPICA BZ 442.
8329 Removed the obsolete version number in module headers. Removed the
8330 "$Revision" number that appeared in each module header. This version
8332 was useful under SourceSafe and CVS, but has no meaning under git. It is
8334 only incorrect, it could also be misleading.
8336 Example Code and Data Size: These are the sizes for the OS-independent
8337 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8338 debug version of the code includes the debug output trace mechanism and
8340 much larger code and data size.
8343 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8344 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8346 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8347 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8349 ----------------------------------------
8350 29 August 2008. Summary of changes for version 20080829:
8352 1) ACPI CA Core Subsystem:
8354 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
8355 Reference. Changes include the elimination of cheating on the Object
8357 for the DdbHandle subtype, addition of a reference class field to
8358 differentiate the various reference types (instead of an AML opcode), and
8360 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
8362 Reduce an error to a warning for an incorrect method argument count.
8363 Previously aborted with an error if too few arguments were passed to a
8364 control method via the external ACPICA interface. Now issue a warning
8366 and continue. Handles the case where the method inadvertently declares
8368 many arguments, but does not actually use the extra ones. Applies mainly
8370 the predefined methods. Lin Ming. Linux BZ 11032.
8372 Disallow the evaluation of named object types with no intrinsic value.
8374 AE_TYPE for objects that have no value and therefore evaluation is
8376 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
8378 these types were allowed, but an exception would be generated at some
8380 during the evaluation. Now, the error is generated up front.
8382 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
8383 (nsnames.c). Fixes a leak in the error exit path.
8385 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
8387 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
8389 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
8392 Removed obsolete and/or unused exception codes from the acexcep.h header.
8393 There is the possibility that certain device drivers may be affected if
8395 use any of these exceptions.
8397 The ACPICA documentation has been added to the public git source tree,
8399 acpica/documents. Included are the ACPICA programmer reference, the iASL
8400 compiler reference, and the changes.txt release logfile.
8402 Example Code and Data Size: These are the sizes for the OS-independent
8403 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8404 debug version of the code includes the debug output trace mechanism and
8406 much larger code and data size.
8409 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8410 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8412 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8413 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8415 2) iASL Compiler/Disassembler and Tools:
8417 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
8418 defines _SCP with 3 arguments. Previous versions defined it with only 1
8419 argument. iASL now allows both definitions.
8421 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
8423 length subtables when disassembling ACPI tables. Also fixed a couple of
8424 errors where a full 16-bit table type field was not extracted from the
8428 acpisrc: Improve comment counting mechanism for generating source code
8429 statistics. Count first and last lines of multi-line comments as
8431 not comment lines. Handle Linux legal header in addition to standard
8435 ----------------------------------------
8437 29 July 2008. Summary of changes for version 20080729:
8439 1) ACPI CA Core Subsystem:
8441 Fix a possible deadlock in the GPE dispatch. Remove call to
8442 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
8444 to acquire the GPE lock but can deadlock since the GPE lock is already
8446 at dispatch time. This code was introduced in version 20060831 as a
8448 to Linux BZ 6881 and has since been removed from Linux.
8450 Add a function to dereference returned reference objects. Examines the
8452 object from a call to AcpiEvaluateObject. Any Index or RefOf references
8454 automatically dereferenced in an attempt to return something useful
8456 reference types cannot be converted into an external ACPI_OBJECT.)
8458 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
8460 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
8461 subtables for the MADT and one new subtable for the SRAT. Includes
8462 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
8464 Specification, June 2008.
8466 Additional error checking for pathname utilities. Add error check after
8468 calls to AcpiNsGetPathnameLength. Add status return from
8469 AcpiNsBuildExternalPath and check after all calls. Add parameter
8471 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
8473 Return status from the global init function AcpiUtGlobalInitialize. This
8475 used by both the kernel subsystem and the utilities such as iASL
8477 The function could possibly fail when the caches are initialized. Yang
8480 Add a function to decode reference object types to strings. Created for
8481 improved error messages.
8483 Improve object conversion error messages. Better error messages during
8485 conversion from internal to the external ACPI_OBJECT. Used for external
8487 to AcpiEvaluateObject.
8489 Example Code and Data Size: These are the sizes for the OS-independent
8490 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8491 debug version of the code includes the debug output trace mechanism and
8493 much larger code and data size.
8496 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8497 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8499 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8500 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8502 2) iASL Compiler/Disassembler and Tools:
8504 Debugger: fix a possible hang when evaluating non-methods. Fixes a
8506 introduced in version 20080701. If the object being evaluated (via
8508 command) is not a method, the debugger can hang while trying to obtain
8510 existent parameters.
8512 iASL: relax error for using reserved "_T_x" identifiers. These names can
8513 appear in a disassembled ASL file if they were emitted by the original
8514 compiler. Instead of issuing an error or warning and forcing the user to
8515 manually change these names, issue a remark instead.
8517 iASL: error if named object created in while loop. Emit an error if any
8519 object is created within a While loop. If allowed, this code will
8522 run-time error on the second iteration of the loop when an attempt is
8525 create the same named object twice. ACPICA bugzilla 730.
8527 iASL: Support absolute pathnames for include files. Add support for
8529 pathnames within the Include operator. previously, only relative
8533 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
8535 The ACPI spec requires one interrupt minimum. BZ 423
8537 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
8538 Handles the case for the Interrupt Resource Descriptor where
8539 the ResourceSource argument is omitted but ResourceSourceIndex
8540 is present. Now leave room for the Index. BZ 426
8542 iASL: Prevent error message if CondRefOf target does not exist. Fixes
8544 where an error message is emitted if the target does not exist. BZ 516
8546 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
8547 (get ACPI tables on Windows). This was apparently broken in version
8550 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
8552 the EOF happens immediately after the last table in the input file. Print
8553 completion message. Previously, no message was displayed in this case.
8555 ----------------------------------------
8556 01 July 2008. Summary of changes for version 20080701:
8558 0) Git source tree / acpica.org
8560 Fixed a problem where a git-clone from http would not transfer the entire
8563 1) ACPI CA Core Subsystem:
8565 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
8566 enable bit. Now performs a read-change-write of the enable register
8568 of simply writing out the cached enable mask. This will prevent
8570 enabling of GPEs if a rogue GPE is received during initialization (before
8572 handlers are installed.)
8574 Implemented a copy for dynamically loaded tables. Previously, dynamically
8575 loaded tables were simply mapped - but on some machines this memory is
8576 corrupted after suspend. Now copy the table to a local buffer. For the
8577 OpRegion case, added checksum verify. Use the table length from the table
8578 header, not the region length. For the Buffer case, use the table length
8579 also. Dennis Noordsij, Bob Moore. BZ 10734
8581 Fixed a problem where the same ACPI table could not be dynamically loaded
8583 unloaded more than once. Without this change, a table cannot be loaded
8585 once it has been loaded/unloaded one time. The current mechanism does not
8586 unregister a table upon an unload. During a load, if the same table is
8588 this no longer returns an exception. BZ 722
8590 Fixed a problem where the wrong descriptor length was calculated for the
8591 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
8593 are calculated as 12 bytes long, but the actual length in the internal
8594 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8596 by Linn Crosetto. BZ 728
8598 Fixed a possible memory leak in the Unload operator. The DdbHandle
8600 by Load() did not have its reference count decremented during unload,
8602 to a memory leak. Lin Ming. BZ 727
8604 Fixed a possible memory leak when deleting thermal/processor objects. Any
8605 associated notify handlers (and objects) were not being deleted. Fiodor
8608 Fixed the ordering of the ASCII names in the global mutex table to match
8610 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8612 Vegard Nossum. BZ 726
8614 Enhanced the AcpiGetObjectInfo interface to return the number of required
8615 arguments if the object is a control method. Added this call to the
8617 so the proper number of default arguments are passed to a method. This
8618 prevents a warning when executing methods from AcpiExec.
8620 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8621 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8623 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8625 Example Code and Data Size: These are the sizes for the OS-independent
8626 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8627 debug version of the code includes the debug output trace mechanism and
8629 much larger code and data size.
8632 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8633 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8635 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8636 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8638 2) iASL Compiler/Disassembler and Tools:
8640 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8641 resource descriptor names.
8643 iASL: Detect invalid ASCII characters in input (windows version). Removed
8645 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8646 characters in the input. BZ 441
8648 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8650 "result of operation not used" warning when the DDB handle returned from
8651 LoadTable is not used. The warning is not needed. BZ 590
8653 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8656 pass address of table to the AML. Added option to disable OpRegion
8658 to allow creation of an OpRegion with a real address that was passed to
8660 All of this allows testing of the Load and Unload operators from
8663 Debugger: update tables command for unloaded tables. Handle unloaded
8665 and use the standard table header output routine.
8667 ----------------------------------------
8668 09 June 2008. Summary of changes for version 20080609:
8670 1) ACPI CA Core Subsystem:
8672 Implemented a workaround for reversed _PRT entries. A significant number
8674 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8675 change dynamically detects and repairs this problem. Provides
8677 with MS ACPI. BZ 6859
8679 Simplified the internal ACPI hardware interfaces to eliminate the locking
8680 flag parameter from Register Read/Write. Added a new external interface,
8681 AcpiGetRegisterUnlocked.
8683 Fixed a problem where the invocation of a GPE control method could hang.
8685 was a regression introduced in 20080514. The new method argument count
8686 validation mechanism can enter an infinite loop when a GPE method is
8687 dispatched. Problem fixed by removing the obsolete code that passed GPE
8689 information to the notify handler via the control method parameter
8692 Fixed a problem where the _SST execution status was incorrectly returned
8694 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8696 20080514. _SST is optional and a NOT_FOUND exception should never be
8699 Fixed a problem where a deleted object could be accessed from within the
8701 parser. This was a regression introduced in version 20080123 as a fix for
8703 Unload operator. Lin Ming. BZ 10669
8705 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8707 and eliminated the use of a negative index in a loop. Operands are now
8708 displayed in the correct order, not backwards. This also fixes a
8710 introduced in 20080514 on 64-bit systems where the elimination of
8711 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8714 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8716 path did not delete a locally allocated structure.
8718 Updated definitions for the DMAR and SRAT tables to synchronize with the
8719 current specifications. Includes disassembler support.
8721 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8722 loop termination value was used. Loop terminated on iteration early,
8724 one mutex. Linn Crosetto
8726 Example Code and Data Size: These are the sizes for the OS-independent
8727 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8728 debug version of the code includes the debug output trace mechanism and
8730 much larger code and data size.
8733 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8734 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8736 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8737 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8739 2) iASL Compiler/Disassembler and Tools:
8741 Disassembler: Implemented support for EisaId() within _CID objects. Now
8742 disassemble integer _CID objects back to EisaId invocations, including
8743 multiple integers within _CID packages. Includes single-step support for
8746 Disassembler: Added support for DMAR and SRAT table definition changes.
8748 ----------------------------------------
8749 14 May 2008. Summary of changes for version 20080514:
8751 1) ACPI CA Core Subsystem:
8753 Fixed a problem where GPEs were enabled too early during the ACPICA
8754 initialization. This could lead to "handler not installed" errors on some
8755 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8757 ensures that all operation regions and devices throughout the namespace
8759 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8761 Implemented a change to the enter sleep code. Moved execution of the _GTS
8762 method to just before setting sleep enable bit. The execution was moved
8764 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8765 immediately before the SLP_EN bit is set, as per the ACPI specification.
8768 Implemented a fix to disable unknown GPEs (2nd version). Now always
8770 the GPE, even if ACPICA thinks that that it is already disabled. It is
8771 possible that the AML or some other code has enabled the GPE unbeknownst
8775 Fixed a problem with the Field operator where zero-length fields would
8777 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8779 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8781 Implemented a fix for the Load operator, now load the table at the
8783 root. This reverts a change introduced in version 20071019. The table is
8785 loaded at the namespace root even though this goes against the ACPI
8786 specification. This provides compatibility with other ACPI
8788 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8791 Fixed a problem where ACPICA would not Load() tables with unusual
8793 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8794 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8795 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8797 signatures, ACPICA must be compatible. BZ 10454.
8799 Fixed a possible negative array index in AcpiUtValidateException. Added
8801 fields to the exception string arrays to eliminate a -1 subtraction on
8805 Updated the debug tracking macros to reduce overall code and data size.
8806 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8807 instead of pointers to static strings. Jan Beulich and Bob Moore.
8809 Implemented argument count checking in control method invocation via
8810 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8812 many. This applies only to extern programmatic control method execution,
8814 method-to-method calls within the AML. Lin Ming.
8816 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8818 longer needed, especially with the removal of 16-bit support. It was
8820 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8823 32/64-bit platforms is required.
8825 Added the C const qualifier for appropriate string constants -- mostly
8826 MODULE_NAME and printf format strings. Jan Beulich.
8828 Example Code and Data Size: These are the sizes for the OS-independent
8829 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8830 debug version of the code includes the debug output trace mechanism and
8832 much larger code and data size.
8835 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8836 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8838 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8839 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8841 2) iASL Compiler/Disassembler and Tools:
8843 Implemented ACPI table revision ID validation in the disassembler. Zero
8845 always invalid. For DSDTs, the ID controls the interpreter integer width.
8847 means 32-bit and this is unusual. 2 or greater is 64-bit.
8849 ----------------------------------------
8850 21 March 2008. Summary of changes for version 20080321:
8852 1) ACPI CA Core Subsystem:
8854 Implemented an additional change to the GPE support in order to suppress
8855 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8857 disable incoming GPEs that are neither enabled nor disabled -- meaning
8859 the GPE is unknown to the system. This should prevent future interrupt
8861 from that GPE. BZ 6217 (Zhang Rui)
8863 Fixed a problem where NULL package elements were not returned to the
8864 AcpiEvaluateObject interface correctly. The element was simply ignored
8865 instead of returning a NULL ACPI_OBJECT package element, potentially
8867 a buffer overflow and/or confusing the caller who expected a fixed number
8869 elements. BZ 10132 (Lin Ming, Bob Moore)
8871 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8873 Qword), Field, BankField, and IndexField operators when invoked from
8875 an executing control method. In this case, these operators created
8877 nodes that were incorrectly left marked as permanent nodes instead of
8878 temporary nodes. This could cause a problem if there is race condition
8879 between an exiting control method and a running namespace walk. (Reported
8883 Fixed a problem where the CreateField and CreateXXXField operators would
8884 incorrectly allow duplicate names (the name of the field) with no
8888 Implemented several changes for Notify handling. Added support for new
8890 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8891 PowerResource objects is no longer allowed, as per the ACPI
8893 (Bob Moore, Zhang Rui)
8895 All Reference Objects returned via the AcpiEvaluateObject interface are
8897 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8899 NULL objects - either NULL package elements or unresolved named
8902 Fixed a problem where an extraneous debug message was produced for
8904 objects (when debugging enabled). The message "Package List length larger
8905 than NumElements count" is now produced in the correct case, and is now
8907 error message rather than a debug message. Added a debug message for the
8908 opposite case, where NumElements is larger than the Package List (the
8910 will be padded out with NULL elements as per the ACPI spec.)
8912 Implemented several improvements for the output of the ASL "Debug" object
8914 clarify and keep all data for a given object on one output line.
8916 Fixed two size calculation issues with the variable-length Start
8918 resource descriptor.
8920 Example Code and Data Size: These are the sizes for the OS-independent
8921 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8922 debug version of the code includes the debug output trace mechanism and
8924 a much larger code and data size.
8927 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8928 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8930 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8931 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8933 2) iASL Compiler/Disassembler and Tools:
8935 Fixed a problem with the use of the Switch operator where execution of
8937 containing method by multiple concurrent threads could cause an
8938 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8939 actual Switch opcode, it must be simulated with local named temporary
8940 variables and if/else pairs. The solution chosen was to mark any method
8942 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8945 ----------------------------------------
8946 13 February 2008. Summary of changes for version 20080213:
8948 1) ACPI CA Core Subsystem:
8950 Implemented another MS compatibility design change for GPE/Notify
8952 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8954 complete first. It is expected that the OSL will queue the enable request
8955 behind all pending notify requests (may require changes to the local host
8957 in AcpiOsExecute). Alexey Starikovskiy.
8959 Fixed a problem where buffer and package objects passed as arguments to a
8960 control method via the external AcpiEvaluateObject interface could cause
8962 AE_AML_INTERNAL exception depending on the order and type of operators
8963 executed by the target control method.
8965 Fixed a problem where resource descriptor size optimization could cause a
8966 problem when a _CRS resource template is passed to a _SRS method. The
8968 resource template must use the same descriptors (with the same size) as
8969 returned from _CRS. This change affects the following resource
8971 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8974 Fixed a problem where a CopyObject to RegionField, BankField, and
8976 objects did not perform an implicit conversion as it should. These types
8978 retain their initial type permanently as per the ACPI specification.
8980 a CopyObject to all other object types should not perform an implicit
8981 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8983 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8984 match device CIDs did not examine the entire list of available CIDs, but
8985 instead aborted on the first non-matching CID. Andrew Patterson.
8987 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8989 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8990 truncating the upper dword of a 64-bit value. This macro is only used to
8991 display debug output, so no incorrect calculations were made. Also,
8992 reimplemented the macro so that a 64-bit shift is not performed by
8993 inefficient compilers.
8995 Added missing va_end statements that should correspond with each va_start
8998 Example Code and Data Size: These are the sizes for the OS-independent
8999 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9000 debug version of the code includes the debug output trace mechanism and
9002 a much larger code and data size.
9005 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
9006 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
9008 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
9009 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
9011 2) iASL Compiler/Disassembler and Tools:
9013 Implemented full disassembler support for the following new ACPI tables:
9014 BERT, EINJ, and ERST. Implemented partial disassembler support for the
9015 complicated HEST table. These tables support the Windows Hardware Error
9016 Architecture (WHEA).
9018 ----------------------------------------
9019 23 January 2008. Summary of changes for version 20080123:
9021 1) ACPI CA Core Subsystem:
9023 Added the 2008 copyright to all module headers and signons. This affects
9024 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9025 the tools/utilities.
9027 Fixed a problem with the SizeOf operator when used with Package and
9029 objects. These objects have deferred execution for some arguments, and
9031 execution is now completed before the SizeOf is executed. This problem
9033 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
9037 Implemented an enhancement to the interpreter "slack mode". In the
9040 an explicit return or an implicitly returned object from the last
9042 opcode, a control method will now implicitly return an integer of value 0
9044 Microsoft compatibility. (Lin Ming) BZ 392
9046 Fixed a problem with the Load operator where an exception was not
9049 the case where the table is already loaded. (Lin Ming) BZ 463
9051 Implemented support for the use of DDBHandles as an Indexed Reference, as
9053 the ACPI spec. (Lin Ming) BZ 486
9055 Implemented support for UserTerm (Method invocation) for the Unload
9057 as per the ACPI spec. (Lin Ming) BZ 580
9059 Fixed a problem with the LoadTable operator where the OemId and
9061 input strings could cause unexpected failures if they were shorter than
9063 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
9065 Implemented support for UserTerm (Method invocation) for the Unload
9067 as per the ACPI spec. (Lin Ming) BZ 580
9069 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
9071 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
9073 Example Code and Data Size: These are the sizes for the OS-independent
9074 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9075 debug version of the code includes the debug output trace mechanism and
9077 a much larger code and data size.
9080 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
9081 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
9083 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
9084 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
9086 2) iASL Compiler/Disassembler and Tools:
9088 Implemented support in the disassembler for checksum validation on
9090 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
9092 header dump at the start of the disassembly.
9094 Implemented additional debugging information in the namespace listing
9096 created during compilation. In addition to the namespace hierarchy, the
9098 pathname to each namespace object is displayed.
9100 Fixed a problem with the disassembler where invalid ACPI tables could
9102 faults or infinite loops.
9104 Fixed an unexpected parse error when using the optional "parameter types"
9105 list in a control method declaration. (Lin Ming) BZ 397
9107 Fixed a problem where two External declarations with the same name did
9109 cause an error (Lin Ming) BZ 509
9111 Implemented support for full TermArgs (adding Argx, Localx and method
9112 invocation) for the ParameterData parameter to the LoadTable operator.
9116 ----------------------------------------
9117 19 December 2007. Summary of changes for version 20071219:
9119 1) ACPI CA Core Subsystem:
9121 Implemented full support for deferred execution for the TermArg string
9122 arguments for DataTableRegion. This enables forward references and full
9123 operand resolution for the three string arguments. Similar to
9125 deferred argument execution.) Lin Ming. BZ 430
9127 Implemented full argument resolution support for the BankValue argument
9129 BankField. Previously, only constants were supported, now any TermArg may
9131 used. Lin Ming BZ 387, 393
9133 Fixed a problem with AcpiGetDevices where the search of a branch of the
9134 device tree could be terminated prematurely. In accordance with the ACPI
9135 specification, the search down the current branch is terminated if a
9137 is both not present and not functional (instead of just not present.)
9141 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
9143 the underlying AML code changed the GPE enable registers. Now, any
9145 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
9147 instead of simply ignored. Rui Zhang.
9149 Fixed a problem with Index Fields where the Index register was
9151 limited to a maximum of 32 bits. Now any size may be used.
9153 Fixed a couple memory leaks associated with "implicit return" objects
9155 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
9157 Example Code and Data Size: These are the sizes for the OS-independent
9158 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9159 debug version of the code includes the debug output trace mechanism and
9161 a much larger code and data size.
9164 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
9165 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
9167 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
9168 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
9170 ----------------------------------------
9171 14 November 2007. Summary of changes for version 20071114:
9173 1) ACPI CA Core Subsystem:
9175 Implemented event counters for each of the Fixed Events, the ACPI SCI
9176 (interrupt) itself, and control methods executed. Named
9177 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
9179 should be useful for debugging and statistics.
9181 Implemented a new external interface, AcpiGetStatistics, to retrieve the
9182 contents of the various event counters. Returns the current values for
9183 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
9184 AcpiMethodCount. The interface can be expanded in the future if new
9186 are added. Device drivers should use this interface rather than access
9190 Fixed a problem with the FromBCD and ToBCD operators. With some
9192 the ShortDivide function worked incorrectly, causing problems with the
9194 functions with large input values. A truncation from 64-bit to 32-bit
9195 inadvertently occurred. Internal BZ 435. Lin Ming
9197 Fixed a problem with Index references passed as method arguments.
9199 passed as arguments to control methods were dereferenced immediately
9201 control was passed to the called method). The references are now
9203 passed directly to the called method. BZ 5389. Lin Ming
9205 Fixed a problem with CopyObject used in conjunction with the Index
9207 The reference was incorrectly dereferenced before the copy. The reference
9209 now correctly copied. BZ 5391. Lin Ming
9211 Fixed a problem with Control Method references within Package objects.
9213 references are now correctly generated. This completes the package
9214 construction overhaul that began in version 20071019.
9216 Example Code and Data Size: These are the sizes for the OS-independent
9217 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9218 debug version of the code includes the debug output trace mechanism and
9220 a much larger code and data size.
9223 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9224 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9226 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
9227 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
9230 2) iASL Compiler/Disassembler and Tools:
9232 The AcpiExec utility now installs handlers for all of the predefined
9233 Operation Region types. New types supported are: PCI_Config, CMOS, and
9236 Fixed a problem with the 64-bit version of AcpiExec where the extended
9238 bit) address fields for the DSDT and FACS within the FADT were not being
9239 used, causing truncation of the upper 32-bits of these addresses. Lin
9243 ----------------------------------------
9244 19 October 2007. Summary of changes for version 20071019:
9246 1) ACPI CA Core Subsystem:
9248 Fixed a problem with the Alias operator when the target of the alias is a
9249 named ASL operator that opens a new scope -- Scope, Device,
9251 Processor, and ThermalZone. In these cases, any children of the original
9252 operator could not be accessed via the alias, potentially causing
9254 AE_NOT_FOUND exceptions. (BZ 9067)
9256 Fixed a problem with the Package operator where all named references were
9257 created as object references and left otherwise unresolved. According to
9259 ACPI specification, a Package can only contain Data Objects or references
9261 control methods. The implication is that named references to Data Objects
9262 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
9263 immediately upon package creation. This is the approach taken with this
9264 change. References to all other named objects (Methods, Devices, Scopes,
9265 etc.) are all now properly created as reference objects. (BZ 5328)
9267 Reverted a change to Notify handling that was introduced in version
9268 20070508. This version changed the Notify handling from asynchronous to
9269 fully synchronous (Device driver Notify handling with respect to the
9271 ASL operator). It was found that this change caused more problems than it
9272 solved and was removed by most users.
9274 Fixed a problem with the Increment and Decrement operators where the type
9276 the target object could be unexpectedly and incorrectly changed. (BZ 353)
9279 Fixed a problem with the Load and LoadTable operators where the table
9280 location within the namespace was ignored. Instead, the table was always
9281 loaded into the root or current scope. Lin Ming.
9283 Fixed a problem with the Load operator when loading a table from a buffer
9284 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
9286 Fixed a problem with the Debug object where a store of a DdbHandle
9288 object to the Debug object could cause a fault.
9290 Added a table checksum verification for the Load operator, in the case
9292 the load is from a buffer. (BZ 578).
9294 Implemented additional parameter validation for the LoadTable operator.
9296 length of the input strings SignatureString, OemIdString, and OemTableId
9298 now checked for maximum lengths. (BZ 582) Lin Ming.
9300 Example Code and Data Size: These are the sizes for the OS-independent
9301 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9302 debug version of the code includes the debug output trace mechanism and
9304 a much larger code and data size.
9307 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9308 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9310 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9311 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9314 2) iASL Compiler/Disassembler:
9316 Fixed a problem where if a single file was specified and the file did not
9317 exist, no error message was emitted. (Introduced with wildcard support in
9320 ----------------------------------------
9321 19 September 2007. Summary of changes for version 20070919:
9323 1) ACPI CA Core Subsystem:
9325 Designed and implemented new external interfaces to install and remove
9326 handlers for ACPI table-related events. Current events that are defined
9328 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
9329 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
9330 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
9332 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
9333 (acpi_serialized option on Linux) could cause some systems to hang during
9334 initialization. (Bob Moore) BZ 8171
9336 Fixed a problem where objects of certain types (Device, ThermalZone,
9337 Processor, PowerResource) can be not found if they are declared and
9338 referenced from within the same control method (Lin Ming) BZ 341
9340 Example Code and Data Size: These are the sizes for the OS-independent
9341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9342 debug version of the code includes the debug output trace mechanism and
9344 a much larger code and data size.
9347 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9348 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9350 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9351 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9354 2) iASL Compiler/Disassembler:
9356 Implemented support to allow multiple files to be compiled/disassembled
9359 single invocation. This includes command line wildcard support for both
9361 Windows and Unix versions of the compiler. This feature simplifies the
9362 disassembly and compilation of multiple ACPI tables in a single
9365 ----------------------------------------
9366 08 May 2007. Summary of changes for version 20070508:
9368 1) ACPI CA Core Subsystem:
9370 Implemented a Microsoft compatibility design change for the handling of
9372 Notify AML operator. Previously, notify handlers were dispatched and
9373 executed completely asynchronously in a deferred thread. The new design
9374 still executes the notify handlers in a different thread, but the
9376 thread that executed the Notify() now waits at a synchronization point
9378 the notify handler to complete. Some machines depend on a synchronous
9380 operator in order to operate correctly.
9382 Implemented support to allow Package objects to be passed as method
9383 arguments to the external AcpiEvaluateObject interface. Previously, this
9384 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
9385 implemented since there were no reserved control methods that required it
9388 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
9390 contained invalid non-zero values in reserved fields could cause later
9391 failures because these fields have meaning in later revisions of the
9393 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
9395 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
9397 Fixed a problem where the Global Lock handle was not properly updated if
9399 thread that acquired the Global Lock via executing AML code then
9401 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
9405 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
9406 could be corrupted if the interrupt being removed was at the head of the
9407 list. Reported by Linn Crosetto.
9409 Example Code and Data Size: These are the sizes for the OS-independent
9410 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9411 debug version of the code includes the debug output trace mechanism and
9413 a much larger code and data size.
9416 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9417 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9419 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9420 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9422 ----------------------------------------
9423 20 March 2007. Summary of changes for version 20070320:
9425 1) ACPI CA Core Subsystem:
9427 Implemented a change to the order of interpretation and evaluation of AML
9428 operand objects within the AML interpreter. The interpreter now evaluates
9429 operands in the order that they appear in the AML stream (and the
9430 corresponding ASL code), instead of in the reverse order (after the
9432 operand list has been parsed). The previous behavior caused several
9434 incompatibilities with the Microsoft AML interpreter as well as being
9435 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
9437 Implemented a change to the ACPI Global Lock support. All interfaces to
9439 global lock now allow the same thread to acquire the lock multiple times.
9440 This affects the AcpiAcquireGlobalLock external interface to the global
9442 as well as the internal use of the global lock to support AML fields -- a
9443 control method that is holding the global lock can now simultaneously
9445 AML fields that require global lock protection. Previously, in both
9447 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
9449 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
9450 Controller. There is no change to the behavior of the AML Acquire
9452 as this can already be used to acquire a mutex multiple times by the same
9453 thread. BZ 8066. With assistance from Alexey Starikovskiy.
9455 Fixed a problem where invalid objects could be referenced in the AML
9456 Interpreter after error conditions. During operand evaluation, ensure
9458 the internal "Return Object" field is cleared on error and only valid
9459 pointers are stored there. Caused occasional access to deleted objects
9461 resulted in "large reference count" warning messages. Valery Podrezov.
9463 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
9465 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
9468 Fixed an internal problem with the handling of result objects on the
9469 interpreter result stack. BZ 7872. Valery Podrezov.
9471 Removed obsolete code that handled the case where AML_NAME_OP is the
9473 of a reference (Reference.Opcode). This code was no longer necessary. BZ
9474 7874. Valery Podrezov.
9476 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
9479 remnant from the previously discontinued 16-bit support.
9481 Example Code and Data Size: These are the sizes for the OS-independent
9482 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9483 debug version of the code includes the debug output trace mechanism and
9485 a much larger code and data size.
9488 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9489 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9491 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9492 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9494 ----------------------------------------
9495 26 January 2007. Summary of changes for version 20070126:
9497 1) ACPI CA Core Subsystem:
9499 Added the 2007 copyright to all module headers and signons. This affects
9500 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9503 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
9504 during a table load. A bad pointer was passed in the case where the DSDT
9506 overridden, causing a fault in this case.
9508 Example Code and Data Size: These are the sizes for the OS-independent
9509 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9510 debug version of the code includes the debug output trace mechanism and
9512 a much larger code and data size.
9515 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9516 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9518 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9519 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9521 ----------------------------------------
9522 15 December 2006. Summary of changes for version 20061215:
9524 1) ACPI CA Core Subsystem:
9526 Support for 16-bit ACPICA has been completely removed since it is no
9528 necessary and it clutters the code. All 16-bit macros, types, and
9529 conditional compiles have been removed, cleaning up and simplifying the
9531 across the entire subsystem. DOS support is no longer needed since the
9532 bootable Linux firmware kit is now available.
9534 The handler for the Global Lock is now removed during AcpiTerminate to
9535 enable a clean subsystem restart, via the implementation of the
9536 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
9539 Implemented enhancements to the multithreading support within the
9541 to enable improved multithreading debugging and evaluation of the
9545 Debugger: Enhanced the Statistics/Memory command to emit the total
9547 memory used during the execution, as well as the maximum memory consumed
9549 each of the various object types. (Valery Podrezov)
9551 Example Code and Data Size: These are the sizes for the OS-independent
9552 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9553 debug version of the code includes the debug output trace mechanism and
9555 a much larger code and data size.
9558 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9559 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9561 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9562 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9565 2) iASL Compiler/Disassembler and Tools:
9567 AcpiExec: Implemented a new option (-m) to display full memory use
9568 statistics upon subsystem/program termination. (Valery Podrezov)
9570 ----------------------------------------
9571 09 November 2006. Summary of changes for version 20061109:
9573 1) ACPI CA Core Subsystem:
9575 Optimized the Load ASL operator in the case where the source operand is
9577 operation region. Simply map the operation region memory, instead of
9578 performing a bytewise read. (Region must be of type SystemMemory, see
9581 Fixed the Load ASL operator for the case where the source operand is a
9582 region field. A buffer object is also allowed as the source operand. BZ
9585 Fixed a problem where the Load ASL operator allowed the source operand to
9587 an operation region of any type. It is now restricted to regions of type
9588 SystemMemory, as per the ACPI specification. BZ 481
9590 Additional cleanup and optimizations for the new Table Manager code.
9592 AcpiEnable will now fail if all of the required ACPI tables are not
9594 (FADT, FACS, DSDT). BZ 477
9596 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9598 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9599 manually optimized to be aligned and will not work if it is byte-packed.
9601 Example Code and Data Size: These are the sizes for the OS-independent
9602 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9603 debug version of the code includes the debug output trace mechanism and
9605 a much larger code and data size.
9608 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9609 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9611 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9612 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9615 2) iASL Compiler/Disassembler and Tools:
9617 Fixed a problem where the presence of the _OSI predefined control method
9618 within complex expressions could cause an internal compiler error.
9620 AcpiExec: Implemented full region support for multiple address spaces.
9621 SpaceId is now part of the REGION object. BZ 429
9623 ----------------------------------------
9624 11 October 2006. Summary of changes for version 20061011:
9626 1) ACPI CA Core Subsystem:
9628 Completed an AML interpreter performance enhancement for control method
9629 execution. Previously a 2-pass parse/execution, control methods are now
9630 completely parsed and executed in a single pass. This improves overall
9631 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9632 use. (Valery Podrezov + interpreter changes in version 20051202 that
9633 eliminated namespace loading during the pass one parse.)
9635 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9637 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9639 obtained and also checked for an ID match.
9641 Implemented additional support for the PCI _ADR execution: upsearch until
9643 device scope is found before executing _ADR. This allows PCI_Config
9644 operation regions to be declared locally within control methods
9648 Fixed a problem with a possible race condition between threads executing
9649 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9650 modifying AcpiWalkNamespace to (by default) ignore all temporary
9652 entries created during any concurrent control method execution. An
9653 additional namespace race condition is known to exist between
9654 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9657 Restructured the AML ParseLoop function, breaking it into several
9658 subfunctions in order to reduce CPU stack use and improve
9662 AcpiGetHandle: Fix for parameter validation to detect invalid
9664 of prefix handle and pathname. BZ 478
9666 Example Code and Data Size: These are the sizes for the OS-independent
9667 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9668 debug version of the code includes the debug output trace mechanism and
9670 a much larger code and data size.
9673 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9674 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9676 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9677 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9679 2) iASL Compiler/Disassembler and Tools:
9681 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9683 to restore original behavior.
9685 ----------------------------------------
9686 27 September 2006. Summary of changes for version 20060927:
9688 1) ACPI CA Core Subsystem:
9690 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9691 These functions now use a spinlock for mutual exclusion and the interrupt
9692 level indication flag is not needed.
9694 Fixed a problem with the Global Lock where the lock could appear to be
9695 obtained before it is actually obtained. The global lock semaphore was
9696 inadvertently created with one unit instead of zero units. (BZ 464)
9700 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9702 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9704 Example Code and Data Size: These are the sizes for the OS-independent
9705 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9706 debug version of the code includes the debug output trace mechanism and
9708 a much larger code and data size.
9711 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9712 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9714 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9715 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9718 2) iASL Compiler/Disassembler and Tools:
9720 Fixed a compilation problem with the pre-defined Resource Descriptor
9722 names where an "object does not exist" error could be incorrectly
9724 if the parent ResourceTemplate pathname places the template within a
9725 different namespace scope than the current scope. (BZ 7212)
9727 Fixed a problem where the compiler could hang after syntax errors
9729 in an ElseIf construct. (BZ 453)
9731 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9732 operator. An incorrect output filename was produced when this parameter
9734 a null string (""). Now, the original input filename is used as the AML
9735 output filename, with an ".aml" extension.
9737 Implemented a generic batch command mode for the AcpiExec utility
9739 any AML debugger command) (Valery Podrezov).
9741 ----------------------------------------
9742 12 September 2006. Summary of changes for version 20060912:
9744 1) ACPI CA Core Subsystem:
9746 Enhanced the implementation of the "serialized mode" of the interpreter
9747 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9748 specified, instead of creating a serialization semaphore per control
9750 the interpreter lock is simply no longer released before a blocking
9751 operation during control method execution. This effectively makes the AML
9752 Interpreter single-threaded. The overhead of a semaphore per-method is
9755 Fixed a regression where an error was no longer emitted if a control
9757 attempts to create 2 objects of the same name. This once again returns
9758 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9760 will dynamically serialize the control method to possible prevent future
9763 Integrated a fix for a problem with PCI Express HID detection in the PCI
9764 Config Space setup procedure. (BZ 7145)
9766 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9767 AcpiHwInitialize function - the FADT registers are now validated when the
9770 Added two new warnings during FADT verification - 1) if the FADT is
9772 than the largest known FADT version, and 2) if there is a mismatch
9775 32-bit block address and the 64-bit X counterpart (when both are non-
9778 Example Code and Data Size: These are the sizes for the OS-independent
9779 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9780 debug version of the code includes the debug output trace mechanism and
9782 a much larger code and data size.
9785 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9786 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9788 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9789 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9792 2) iASL Compiler/Disassembler and Tools:
9794 Fixed a problem with the implementation of the Switch() operator where
9796 temporary variable was declared too close to the actual Switch, instead
9798 at method level. This could cause a problem if the Switch() operator is
9799 within a while loop, causing an error on the second iteration. (BZ 460)
9801 Disassembler - fix for error emitted for unknown type for target of scope
9802 operator. Now, ignore it and continue.
9804 Disassembly of an FADT now verifies the input FADT and reports any errors
9805 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9807 Disassembly of raw data buffers with byte initialization data now
9809 each output line with the current buffer offset.
9811 Disassembly of ASF! table now includes all variable-length data fields at
9812 the end of some of the subtables.
9814 The disassembler now emits a comment if a buffer appears to be a
9815 ResourceTemplate, but cannot be disassembled as such because the EndTag
9817 not appear at the very end of the buffer.
9819 AcpiExec - Added the "-t" command line option to enable the serialized
9821 of the AML interpreter.
9823 ----------------------------------------
9824 31 August 2006. Summary of changes for version 20060831:
9826 1) ACPI CA Core Subsystem:
9828 Miscellaneous fixes for the Table Manager:
9829 - Correctly initialize internal common FADT for all 64-bit "X" fields
9830 - Fixed a couple table mapping issues during table load
9831 - Fixed a couple alignment issues for IA64
9832 - Initialize input array to zero in AcpiInitializeTables
9833 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9836 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9838 immediately disabled to prevent the waking GPE from firing again and to
9839 prevent other wake GPEs from interrupting the wake process.
9841 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9843 be used for debugging systems with a large number of ACPI interrupts.
9845 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9846 both the ACPICA headers and the disassembler.
9848 Example Code and Data Size: These are the sizes for the OS-independent
9849 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9850 debug version of the code includes the debug output trace mechanism and
9852 a much larger code and data size.
9855 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9856 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9858 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9859 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9862 2) iASL Compiler/Disassembler and Tools:
9864 Disassembler support for the DMAR ACPI table.
9866 ----------------------------------------
9867 23 August 2006. Summary of changes for version 20060823:
9869 1) ACPI CA Core Subsystem:
9871 The Table Manager component has been completely redesigned and
9872 reimplemented. The new design is much simpler, and reduces the overall
9874 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9876 now possible to obtain the ACPI tables very early during kernel
9877 initialization, even before dynamic memory management is initialized.
9878 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9880 Obsolete ACPICA interfaces:
9882 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9885 - AcpiLoadTable: Not needed.
9886 - AcpiUnloadTable: Not needed.
9888 New ACPICA interfaces:
9890 - AcpiInitializeTables: Must be called before the table manager can be
9892 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9893 allocated memory after it becomes available.
9894 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9898 Other ACPICA changes:
9900 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9902 AcpiOsUnmapMemory to free this mapping.
9903 - AcpiGetTable returns the actual mapped table. The mapping is managed
9904 internally and must not be deleted by the caller. Use of this interface
9905 causes no additional dynamic memory allocation.
9906 - AcpiFindRootPointer: Support for physical addressing has been
9908 it appeared to be unused.
9909 - The interface to AcpiOsMapMemory has changed to be consistent with the
9910 other allocation interfaces.
9911 - The interface to AcpiOsGetRootPointer has changed to eliminate
9914 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9916 bit platforms. Was previously 64 bits on all platforms.
9917 - The interface to the ACPI Global Lock acquire/release macros have
9919 slightly since ACPICA no longer keeps a local copy of the FACS with a
9920 constructed pointer to the actual global lock.
9922 Porting to the new table manager:
9924 - AcpiInitializeTables: Must be called once, and can be called anytime
9925 during the OS initialization process. It allows the host to specify an
9927 of memory to be used to store the internal version of the RSDT/XSDT (root
9928 table). This allows the host to access ACPI tables before memory
9930 is initialized and running.
9931 - AcpiReallocateRootTable: Can be called after memory management is
9933 to copy the root table to a dynamically allocated array, freeing up the
9934 scratch memory specified in the call to AcpiInitializeTables.
9935 - AcpiSubsystemInitialize: This existing interface is independent of the
9936 Table Manager, and does not have to be called before the Table Manager
9938 be used, it only must be called before the rest of ACPICA can be used.
9939 - ACPI Tables: Some changes have been made to the names and structure of
9941 actbl.h and actbl1.h header files and may require changes to existing
9943 For example, bitfields have been completely removed because of their lack
9945 portability across C compilers.
9946 - Update interfaces to the Global Lock acquire/release macros if local
9947 versions are used. (see acwin.h)
9949 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9953 Example Code and Data Size: These are the sizes for the OS-independent
9954 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9955 debug version of the code includes the debug output trace mechanism and
9957 a much larger code and data size.
9960 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9961 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9963 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9964 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9967 2) iASL Compiler/Disassembler and Tools:
9969 No changes for this release.
9971 ----------------------------------------
9972 21 July 2006. Summary of changes for version 20060721:
9974 1) ACPI CA Core Subsystem:
9976 The full source code for the ASL test suite used to validate the iASL
9977 compiler and the ACPICA core subsystem is being released with the ACPICA
9978 source for the first time. The source is contained in a separate package
9980 consists of over 1100 files that exercise all ASL/AML operators. The
9982 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9986 Completed a new design and implementation for support of the ACPI Global
9987 Lock. On the OS side, the global lock is now treated as a standard AML
9988 mutex. Previously, multiple OS threads could "acquire" the global lock
9989 simultaneously. However, this could cause the BIOS to be starved out of
9991 lock - especially in cases such as the Embedded Controller driver where
9992 there is a tight coupling between the OS and the BIOS.
9994 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9995 The Global Lock interrupt handler no longer queues the execution of a
9996 separate thread to signal the global lock semaphore. Instead, the
9998 is signaled directly from the interrupt handler.
10000 Implemented support within the AML interpreter for package objects that
10001 contain a larger AML length (package list length) than the package
10003 count. In this case, the length of the package is truncated to match the
10004 package element count. Some BIOS code apparently modifies the package
10006 on the fly, and this change supports this behavior. Provides
10008 with the MS AML interpreter. (With assistance from Fiodor Suietov)
10010 Implemented a temporary fix for the BankValue parameter of a Bank Field
10012 support all constant values, now including the Zero and One opcodes.
10013 Evaluation of this parameter must eventually be converted to a full
10015 evaluation. A not-implemented error is now returned (temporarily) for
10017 constant values for this parameter.
10019 Fixed problem reports (Fiodor Suietov) integrated:
10020 - Fix for premature object deletion after CopyObject on Operation Region
10024 Example Code and Data Size: These are the sizes for the OS-independent
10025 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10026 debug version of the code includes the debug output trace mechanism and
10028 a much larger code and data size.
10031 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
10032 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
10034 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
10035 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
10038 2) iASL Compiler/Disassembler and Tools:
10040 No changes for this release.
10042 ----------------------------------------
10043 07 July 2006. Summary of changes for version 20060707:
10045 1) ACPI CA Core Subsystem:
10047 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
10048 that do not allow the initialization of address pointers within packed
10049 structures - even though the hardware itself may support misaligned
10050 transfers. Some of the debug data structures are packed by default to
10053 Added an error message for the case where AcpiOsGetThreadId() returns
10055 A non-zero value is required by the core ACPICA code to ensure the proper
10056 operation of AML mutexes and recursive control methods.
10058 The DSDT is now the only ACPI table that determines whether the AML
10059 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
10061 the hooks for per-table 32/64 switching have been removed from the code.
10063 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
10065 Fixed a possible leak of an OwnerID in the error path of
10066 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
10067 deletion to a single place in AcpiTbUninstallTable to correct possible
10069 when using the AcpiTbDeleteTablesByType interface (with assistance from
10072 Fixed a problem with Serialized control methods where the semaphore
10073 associated with the method could be over-signaled after multiple method
10076 Fixed two issues with the locking of the internal namespace data
10078 Both the Unload() operator and AcpiUnloadTable interface now lock the
10079 namespace during the namespace deletion associated with the table unload
10080 (with assistance from Linn Crosetto.)
10082 Fixed problem reports (Valery Podrezov) integrated:
10083 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
10085 Fixed problem reports (Fiodor Suietov) integrated:
10086 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
10087 - On Address Space handler deletion, needless deactivation call (BZ 374)
10088 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
10090 - Possible memory leak, Notify sub-objects of Processor, Power,
10093 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
10094 - Minimum Length of RSDT should be validated (BZ 379)
10095 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
10097 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
10101 Example Code and Data Size: These are the sizes for the OS-independent
10102 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10103 debug version of the code includes the debug output trace mechanism and
10105 a much larger code and data size.
10108 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
10109 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
10111 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
10112 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
10115 2) iASL Compiler/Disassembler and Tools:
10117 Fixed problem reports:
10118 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
10121 ----------------------------------------
10122 23 June 2006. Summary of changes for version 20060623:
10124 1) ACPI CA Core Subsystem:
10126 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
10127 allows the type to be customized to the host OS for improved efficiency
10128 (since a spinlock is usually a very small object.)
10130 Implemented support for "ignored" bits in the ACPI registers. According
10132 the ACPI specification, these bits should be preserved when writing the
10133 registers via a read/modify/write cycle. There are 3 bits preserved in
10135 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
10137 Implemented the initial deployment of new OSL mutex interfaces. Since
10139 host operating systems have separate mutex and semaphore objects, this
10140 feature was requested. The base code now uses mutexes (and the new mutex
10141 interfaces) wherever a binary semaphore was used previously. However, for
10142 the current release, the mutex interfaces are defined as macros to map
10144 to the existing semaphore interfaces. Therefore, no OSL changes are
10146 at this time. (See acpiosxf.h)
10148 Fixed several problems with the support for the control method SyncLevel
10149 parameter. The SyncLevel now works according to the ACPI specification
10151 in concert with the Mutex SyncLevel parameter, since the current
10153 is a property of the executing thread. Mutual exclusion for control
10155 is now implemented with a mutex instead of a semaphore.
10157 Fixed three instances of the use of the C shift operator in the bitfield
10158 support code (exfldio.c) to avoid the use of a shift value larger than
10160 target data width. The behavior of C compilers is undefined in this case
10162 can cause unpredictable results, and therefore the case must be detected
10164 avoided. (Fiodor Suietov)
10166 Added an info message whenever an SSDT or OEM table is loaded dynamically
10167 via the Load() or LoadTable() ASL operators. This should improve
10169 capability since it will show exactly what tables have been loaded
10171 the tables present in the RSDT/XSDT.)
10173 Example Code and Data Size: These are the sizes for the OS-independent
10174 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10175 debug version of the code includes the debug output trace mechanism and
10177 a much larger code and data size.
10180 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
10181 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
10183 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
10184 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
10187 2) iASL Compiler/Disassembler and Tools:
10189 No changes for this release.
10191 ----------------------------------------
10192 08 June 2006. Summary of changes for version 20060608:
10194 1) ACPI CA Core Subsystem:
10196 Converted the locking mutex used for the ACPI hardware to a spinlock.
10198 change should eliminate all problems caused by attempting to acquire a
10199 semaphore at interrupt level, and it means that all ACPICA external
10200 interfaces that directly access the ACPI hardware can be safely called
10202 interrupt level. OSL code that implements the semaphore interfaces should
10204 able to eliminate any workarounds for being called at interrupt level.
10206 Fixed a regression introduced in 20060526 where the ACPI device
10207 initialization could be prematurely aborted with an AE_NOT_FOUND if a
10209 did not have an optional _INI method.
10211 Fixed an IndexField issue where a write to the Data Register should be
10212 limited in size to the AccessSize (width) of the IndexField itself. (BZ
10216 Fixed problem reports (Valery Podrezov) integrated:
10217 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
10219 Fixed problem reports (Fiodor Suietov) integrated:
10220 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
10222 Removed four global mutexes that were obsolete and were no longer being
10225 Example Code and Data Size: These are the sizes for the OS-independent
10226 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10227 debug version of the code includes the debug output trace mechanism and
10229 a much larger code and data size.
10232 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10233 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10235 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
10236 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
10239 2) iASL Compiler/Disassembler and Tools:
10241 Fixed a fault when using -g option (get tables from registry) on Windows
10244 Fixed problem reports integrated:
10245 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
10246 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
10248 - Global table revision override (-r) is ignored (BZ 413)
10250 ----------------------------------------
10251 26 May 2006. Summary of changes for version 20060526:
10253 1) ACPI CA Core Subsystem:
10255 Restructured, flattened, and simplified the internal interfaces for
10256 namespace object evaluation - resulting in smaller code, less CPU stack
10258 and fewer interfaces. (With assistance from Mikhail Kouzmich)
10260 Fixed a problem with the CopyObject operator where the first parameter
10262 not typed correctly for the parser, interpreter, compiler, and
10264 Caused various errors and unexpected behavior.
10266 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
10267 produced incorrect results with some C compilers. Since the behavior of C
10268 compilers when the shift value is larger than the datatype width is
10269 apparently not well defined, the interpreter now detects this condition
10271 simply returns zero as expected in all such cases. (BZ 395)
10273 Fixed problem reports (Valery Podrezov) integrated:
10274 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
10275 - Allow interpreter to handle nested method declarations (BZ 5361)
10277 Fixed problem reports (Fiodor Suietov) integrated:
10278 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
10280 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
10282 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
10283 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
10284 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
10285 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
10286 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
10287 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
10288 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
10290 - Status of the Global Initialization Handler call not used (BZ 366)
10291 - Incorrect object parameter to Global Initialization Handler (BZ 367)
10293 Example Code and Data Size: These are the sizes for the OS-independent
10294 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10295 debug version of the code includes the debug output trace mechanism and
10297 a much larger code and data size.
10300 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10301 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10303 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10304 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10307 2) iASL Compiler/Disassembler and Tools:
10309 Modified the parser to allow the names IO, DMA, and IRQ to be used as
10310 namespace identifiers with no collision with existing resource descriptor
10311 macro names. This provides compatibility with other ASL compilers and is
10312 most useful for disassembly/recompilation of existing tables without
10314 errors. (With assistance from Thomas Renninger)
10316 Disassembler: fixed an incorrect disassembly problem with the
10317 DataTableRegion and CopyObject operators. Fixed a possible fault during
10318 disassembly of some Alias operators.
10320 ----------------------------------------
10321 12 May 2006. Summary of changes for version 20060512:
10323 1) ACPI CA Core Subsystem:
10325 Replaced the AcpiOsQueueForExecution interface with a new interface named
10326 AcpiOsExecute. The major difference is that the new interface does not
10328 a Priority parameter, this appeared to be useless and has been replaced
10331 Type parameter. The Type tells the host what type of execution is being
10332 requested, such as global lock handler, notify handler, GPE handler, etc.
10333 This allows the host to queue and execute the request as appropriate for
10335 request type, possibly using different work queues and different
10337 for the various request types. This enables fixes for multithreading
10338 deadlock problems such as BZ #5534, and will require changes to all
10340 OS interface layers. (Alexey Starikovskiy and Bob Moore)
10342 Fixed a possible memory leak associated with the support for the so-
10344 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
10347 Fixed a problem with the Load() operator where a table load from an
10348 operation region could overwrite an internal table buffer by up to 7
10350 and cause alignment faults on IPF systems. (With assistance from Luming
10353 Example Code and Data Size: These are the sizes for the OS-independent
10354 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10355 debug version of the code includes the debug output trace mechanism and
10357 a much larger code and data size.
10360 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10361 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10363 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10364 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10368 2) iASL Compiler/Disassembler and Tools:
10370 Disassembler: Implemented support to cross reference the internal
10372 and automatically generate ASL External() statements for symbols not
10374 within the current table being disassembled. This will simplify the
10375 disassembly and recompilation of interdependent tables such as SSDTs
10377 these statements will no longer have to be added manually.
10379 Disassembler: Implemented experimental support to automatically detect
10380 invocations of external control methods and generate appropriate
10382 statements. This is problematic because the AML cannot be correctly
10384 until the number of arguments for each control method is known.
10386 standalone method invocations and invocations as the source operand of a
10387 Store() statement are supported.
10389 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
10390 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
10391 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
10392 more readable and likely closer to the original ASL source.
10394 ----------------------------------------
10395 21 April 2006. Summary of changes for version 20060421:
10397 1) ACPI CA Core Subsystem:
10399 Removed a device initialization optimization introduced in 20051216 where
10400 the _STA method was not run unless an _INI was also present for the same
10401 device. This optimization could cause problems because it could allow
10403 methods to be run within a not-present device subtree. (If a not-present
10404 device had no _INI, _STA would not be run, the not-present status would
10406 be discovered, and the children of the device would be incorrectly
10409 Implemented a new _STA optimization where namespace subtrees that do not
10410 contain _INI are identified and ignored during device initialization.
10411 Selectively running _STA can significantly improve boot time on large
10412 machines (with assistance from Len Brown.)
10414 Implemented support for the device initialization case where the returned
10415 _STA flags indicate a device not-present but functioning. In this case,
10417 is not run, but the device children are examined for presence, as per the
10418 ACPI specification.
10420 Implemented an additional change to the IndexField support in order to
10421 conform to MS behavior. The value written to the Index Register is not
10422 simply a byte offset, it is a byte offset in units of the access width of
10423 the parent Index Field. (Fiodor Suietov)
10425 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
10426 interface is called during the creation of all AML operation regions, and
10427 allows the host OS to exert control over what addresses it will allow the
10428 AML code to access. Operation Regions whose addresses are disallowed will
10429 cause a runtime exception when they are actually accessed (will not
10431 or abort table loading.) See oswinxf or osunixxf for an example
10434 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
10435 interface allows the host OS to match the various "optional"
10436 interface/behavior strings for the _OSI predefined control method as
10437 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
10438 for an example implementation.
10440 Restructured and corrected various problems in the exception handling
10442 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
10443 (with assistance from Takayoshi Kochi.)
10445 Modified the Linux source converter to ignore quoted string literals
10447 converting identifiers from mixed to lower case. This will correct
10449 with the disassembler and other areas where such strings must not be
10452 The ACPI_FUNCTION_* macros no longer require quotes around the function
10453 name. This allows the Linux source converter to convert the names, now
10455 the converter ignores quoted strings.
10457 Example Code and Data Size: These are the sizes for the OS-independent
10458 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10459 debug version of the code includes the debug output trace mechanism and
10461 a much larger code and data size.
10465 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10466 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10468 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10469 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10472 2) iASL Compiler/Disassembler and Tools:
10474 Implemented 3 new warnings for iASL, and implemented multiple warning
10478 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
10480 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
10481 check for the possible timeout, a warning is issued.
10483 2) Useless operators: If an ASL operator does not specify an optional
10485 operand and it also does not use the function return value from the
10486 operator, a warning is issued since the operator effectively does
10489 3) Unreferenced objects: If a namespace object is created, but never
10490 referenced, a warning is issued. This is a warning level 2 since there
10492 cases where this is ok, such as when a secondary table is loaded that
10494 the unreferenced objects. Even so, care is taken to only flag objects
10496 don't look like they will ever be used. For example, the reserved methods
10497 (starting with an underscore) are usually not referenced because it is
10498 expected that the OS will invoke them.
10500 ----------------------------------------
10501 31 March 2006. Summary of changes for version 20060331:
10503 1) ACPI CA Core Subsystem:
10505 Implemented header file support for the following additional ACPI tables:
10506 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
10508 all current and known ACPI tables are now defined in the ACPICA headers
10510 are available for use by device drivers and other software.
10512 Implemented support to allow tables that contain ACPI names with invalid
10513 characters to be loaded. Previously, this would cause the table load to
10514 fail, but since there are several known cases of such tables on existing
10515 machines, this change was made to enable ACPI support for them. Also,
10517 matches the behavior of the Microsoft ACPI implementation.
10519 Fixed a couple regressions introduced during the memory optimization in
10521 20060317 release. The namespace node definition required additional
10522 reorganization and an internal datatype that had been changed to 8-bit
10524 restored to 32-bit. (Valery Podrezov)
10526 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
10527 could be passed through to AcpiOsReleaseObject which is unexpected. Such
10528 null pointers are now trapped and ignored, matching the behavior of the
10529 previous implementation before the deployment of AcpiOsReleaseObject.
10530 (Valery Podrezov, Fiodor Suietov)
10532 Fixed a memory mapping leak during the deletion of a SystemMemory
10534 region where a cached memory mapping was not deleted. This became a
10535 noticeable problem for operation regions that are defined within
10537 used control methods. (Dana Meyers)
10539 Reorganized the ACPI table header files into two main files: one for the
10540 ACPI tables consumed by the ACPICA core, and another for the
10542 ACPI tables that are consumed by the drivers and other software. The
10544 FADT definitions were merged into one common section and three different
10545 tables (ACPI 1.0, 1.0+, and 2.0)
10547 Example Code and Data Size: These are the sizes for the OS-independent
10548 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10549 debug version of the code includes the debug output trace mechanism and
10551 a much larger code and data size.
10554 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10555 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10557 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10558 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10561 2) iASL Compiler/Disassembler and Tools:
10563 Disassembler: Implemented support to decode and format all non-AML ACPI
10564 tables (tables other than DSDTs and SSDTs.) This includes the new tables
10565 added to the ACPICA headers, therefore all current and known ACPI tables
10569 Disassembler: The change to allow ACPI names with invalid characters also
10570 enables the disassembly of such tables. Invalid characters within names
10572 changed to '*' to make the name printable; the iASL compiler will still
10573 generate an error for such names, however, since this is an invalid ACPI
10576 Implemented an option for AcpiXtract (-a) to extract all tables found in
10578 input file. The default invocation extracts only the DSDTs and SSDTs.
10580 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
10581 makefile for the AcpiXtract utility.
10583 ----------------------------------------
10584 17 March 2006. Summary of changes for version 20060317:
10586 1) ACPI CA Core Subsystem:
10588 Implemented the use of a cache object for all internal namespace nodes.
10589 Since there are about 1000 static nodes in a typical system, this will
10590 decrease memory use for cache implementations that minimize per-
10592 overhead (such as a slab allocator.)
10594 Removed the reference count mechanism for internal namespace nodes, since
10596 was deemed unnecessary. This reduces the size of each namespace node by
10597 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10599 and 32 bytes for the 64-bit case.
10601 Optimized several internal data structures to reduce object size on 64-
10603 platforms by packing data within the 64-bit alignment. This includes the
10604 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10605 instances corresponding to the namespace objects.
10607 Added two new strings for the predefined _OSI method: "Windows 2001.1
10609 and "Windows 2006".
10611 Split the allocation tracking mechanism out to a separate file, from
10612 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10613 application-level code. Kernels may wish to not include uttrack.c in
10616 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10618 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10621 Code and Data Size: These are the sizes for the acpica.lib produced by
10623 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10625 driver or OSPM code. The debug version of the code includes the debug
10627 trace mechanism and has a much larger code and data size. Note that these
10628 values will vary depending on the efficiency of the compiler and the
10629 compiler options used during generation.
10632 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10633 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10635 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10636 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10639 2) iASL Compiler/Disassembler and Tools:
10641 Implemented an ANSI C version of the acpixtract utility. This version
10643 automatically extract the DSDT and all SSDTs from the input acpidump text
10644 file and dump the binary output to separate files. It can also display a
10645 summary of the input file including the headers for each table found and
10646 will extract any single ACPI table, with any signature. (See
10647 source/tools/acpixtract)
10649 ----------------------------------------
10650 10 March 2006. Summary of changes for version 20060310:
10652 1) ACPI CA Core Subsystem:
10654 Tagged all external interfaces to the subsystem with the new
10655 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10657 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10658 macro. The default definition is NULL.
10660 Added the ACPI_THREAD_ID type for the return value from
10662 This allows the host to define this as necessary to simplify kernel
10663 integration. The default definition is ACPI_NATIVE_UINT.
10665 Fixed two interpreter problems related to error processing, the deletion
10667 objects, and placing invalid pointers onto the internal operator result
10668 stack. BZ 6028, 6151 (Valery Podrezov)
10670 Increased the reference count threshold where a warning is emitted for
10672 reference counts in order to eliminate unnecessary warnings on systems
10674 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10677 Due to universal disagreement as to the meaning of the 'c' in the
10679 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10680 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10681 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10684 Code and Data Size: These are the sizes for the acpica.lib produced by
10686 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10688 driver or OSPM code. The debug version of the code includes the debug
10690 trace mechanism and has a much larger code and data size. Note that these
10691 values will vary depending on the efficiency of the compiler and the
10692 compiler options used during generation.
10695 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10696 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10698 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10699 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10702 2) iASL Compiler/Disassembler:
10704 Disassembler: implemented support for symbolic resource descriptor
10705 references. If a CreateXxxxField operator references a fixed offset
10708 resource descriptor, a name is assigned to the descriptor and the offset
10710 translated to the appropriate resource tag and pathname. The addition of
10711 this support brings the disassembled code very close to the original ASL
10712 source code and helps eliminate run-time errors when the disassembled
10714 is modified (and recompiled) in such a way as to invalidate the original
10717 Implemented support for a Descriptor Name as the last parameter to the
10719 Register() macro. This parameter was inadvertently left out of the ACPI
10720 specification, and will be added for ACPI 3.0b.
10722 Fixed a problem where the use of the "_OSI" string (versus the full path
10723 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10725 Fixed a problem with the error message that occurs when an invalid string
10727 used for a _HID object (such as one with an embedded asterisk:
10729 The correct message is now displayed.
10731 ----------------------------------------
10732 17 February 2006. Summary of changes for version 20060217:
10734 1) ACPI CA Core Subsystem:
10736 Implemented a change to the IndexField support to match the behavior of
10738 Microsoft AML interpreter. The value written to the Index register is now
10740 byte offset, no longer an index based upon the width of the Data
10742 This should fix IndexField problems seen on some machines where the Data
10743 register is not exactly one byte wide. The ACPI specification will be
10744 clarified on this point.
10746 Fixed a problem where several resource descriptor types could overrun the
10747 internal descriptor buffer due to size miscalculation: VendorShort,
10748 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10749 affect all platforms.
10751 Fixed a problem where individual resource descriptors were misaligned
10753 the internal buffer, causing alignment faults on IA64 platforms.
10755 Code and Data Size: These are the sizes for the acpica.lib produced by
10757 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10759 driver or OSPM code. The debug version of the code includes the debug
10761 trace mechanism and has a much larger code and data size. Note that these
10762 values will vary depending on the efficiency of the compiler and the
10763 compiler options used during generation.
10766 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10767 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10769 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10770 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10773 2) iASL Compiler/Disassembler:
10775 Implemented support for new reserved names: _WDG and _WED are Microsoft
10776 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10777 defined method (Throttling Depth Limit.)
10779 Fixed a problem where a zero-length VendorShort or VendorLong resource
10780 descriptor was incorrectly emitted as a descriptor of length one.
10782 ----------------------------------------
10783 10 February 2006. Summary of changes for version 20060210:
10785 1) ACPI CA Core Subsystem:
10787 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10788 normal execution. These became apparent after the conversion from
10791 Fixed a problem where the CreateField operator could hang if the BitIndex
10793 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10795 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10796 failed with an exception. This also fixes a couple of related RefOf and
10797 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10799 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10801 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10805 Implemented a memory cleanup at the end of the execution of each
10807 of an AML While() loop, preventing the accumulation of outstanding
10809 (Valery Podrezov, BZ 5427)
10811 Eliminated a chunk of duplicate code in the object resolution code.
10815 Fixed several warnings during the 64-bit code generation.
10817 The AcpiSrc source code conversion tool now inserts one line of
10819 after an if() statement that is followed immediately by a comment,
10821 readability of the Linux code.
10823 Code and Data Size: The current and previous library sizes for the core
10824 subsystem are shown below. These are the code and data sizes for the
10825 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10827 values do not include any ACPI driver or OSPM code. The debug version of
10829 code includes the debug output trace mechanism and has a much larger code
10830 and data size. Note that these values will vary depending on the
10832 of the compiler and the compiler options used during generation.
10835 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10836 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10838 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10839 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10842 2) iASL Compiler/Disassembler:
10844 Fixed a problem with the disassembly of a BankField operator with a
10846 expression for the BankValue parameter.
10848 ----------------------------------------
10849 27 January 2006. Summary of changes for version 20060127:
10851 1) ACPI CA Core Subsystem:
10853 Implemented support in the Resource Manager to allow unresolved
10855 references within resource package objects for the _PRT method. This
10857 is in addition to the previously implemented unresolved reference support
10858 within the AML parser. If the interpreter slack mode is enabled, these
10859 unresolved references will be passed through to the caller as a NULL
10863 Implemented and deployed new macros and functions for error and warning
10864 messages across the subsystem. These macros are simpler and generate less
10865 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10866 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10867 macros remain defined to allow ACPI drivers time to migrate to the new
10870 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10872 Acquire/Release Lock OSL interfaces.
10874 Fixed a problem where Alias ASL operators are sometimes not correctly
10875 resolved, in both the interpreter and the iASL compiler.
10877 Fixed several problems with the implementation of the
10878 ConcatenateResTemplate
10879 ASL operator. As per the ACPI specification, zero length buffers are now
10880 treated as a single EndTag. One-length buffers always cause a fatal
10881 exception. Non-zero length buffers that do not end with a full 2-byte
10883 cause a fatal exception.
10885 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10886 interface. (With assistance from Thomas Renninger)
10888 Code and Data Size: The current and previous library sizes for the core
10889 subsystem are shown below. These are the code and data sizes for the
10890 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10892 values do not include any ACPI driver or OSPM code. The debug version of
10894 code includes the debug output trace mechanism and has a much larger code
10895 and data size. Note that these values will vary depending on the
10897 of the compiler and the compiler options used during generation.
10900 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10901 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10903 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10904 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10907 2) iASL Compiler/Disassembler:
10909 Fixed an internal error that was generated for any forward references to
10913 ----------------------------------------
10914 13 January 2006. Summary of changes for version 20060113:
10916 1) ACPI CA Core Subsystem:
10918 Added 2006 copyright to all module headers and signons. This affects
10919 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10922 Enhanced the ACPICA error reporting in order to simplify user migration
10924 the non-debug version of ACPICA. Replaced all instances of the
10925 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10927 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10928 respectively. This preserves all error and warning messages in the non-
10930 version of the ACPICA code (this has been referred to as the "debug lite"
10931 option.) Over 200 cases were converted to create a total of over 380
10932 error/warning messages across the ACPICA code. This increases the code
10934 data size of the default non-debug version of the code somewhat (about
10936 but all error/warning reporting may be disabled if desired (and code
10937 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10938 configuration option. The size of the debug version of ACPICA remains
10942 Fixed a memory leak within the AML Debugger "Set" command. One object was
10943 not properly deleted for every successful invocation of the command.
10945 Code and Data Size: The current and previous library sizes for the core
10946 subsystem are shown below. These are the code and data sizes for the
10947 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10949 values do not include any ACPI driver or OSPM code. The debug version of
10951 code includes the debug output trace mechanism and has a much larger code
10952 and data size. Note that these values will vary depending on the
10954 of the compiler and the compiler options used during generation.
10957 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10958 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10960 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10961 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10964 2) iASL Compiler/Disassembler:
10966 The compiler now officially supports the ACPI 3.0a specification that was
10967 released on December 30, 2005. (Specification is available at
10970 ----------------------------------------
10971 16 December 2005. Summary of changes for version 20051216:
10973 1) ACPI CA Core Subsystem:
10975 Implemented optional support to allow unresolved names within ASL Package
10976 objects. A null object is inserted in the package when a named reference
10977 cannot be located in the current namespace. Enabled via the interpreter
10978 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10980 that contain such code.
10982 Implemented an optimization to the initialization sequence that can
10984 boot time. During ACPI device initialization, the _STA method is now run
10986 and only if the _INI method exists. The _STA method is used to determine
10988 the device is present; An _INI can only be run if _STA returns present,
10990 it is a waste of time to run the _STA method if the _INI does not exist.
10991 (Prototype and assistance from Dong Wei)
10993 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10995 available in the current compiler. Otherwise, the default (void *) cast
10999 Fixed some possible memory leaks found within the execution path of the
11000 Break, Continue, If, and CreateField operators. (Valery Podrezov)
11002 Fixed a problem introduced in the 20051202 release where an exception is
11003 generated during method execution if a control method attempts to declare
11006 Moved resource descriptor string constants that are used by both the AML
11007 disassembler and AML debugger to the common utilities directory so that
11008 these components are independent.
11010 Implemented support in the AcpiExec utility (-e switch) to globally
11012 exceptions during control method execution (method is not aborted.)
11014 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
11017 Code and Data Size: The current and previous library sizes for the core
11018 subsystem are shown below. These are the code and data sizes for the
11019 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11021 values do not include any ACPI driver or OSPM code. The debug version of
11023 code includes the debug output trace mechanism and has a much larger code
11024 and data size. Note that these values will vary depending on the
11026 of the compiler and the compiler options used during generation.
11029 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11030 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
11032 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
11033 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
11036 2) iASL Compiler/Disassembler:
11038 Fixed a problem where a CPU stack overflow fault could occur if a
11040 method call was made from within a Return statement.
11042 ----------------------------------------
11043 02 December 2005. Summary of changes for version 20051202:
11045 1) ACPI CA Core Subsystem:
11047 Modified the parsing of control methods to no longer create namespace
11048 objects during the first pass of the parse. Objects are now created only
11049 during the execute phase, at the moment the namespace creation operator
11051 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
11053 should eliminate ALREADY_EXISTS exceptions seen on some machines where
11054 reentrant control methods are protected by an AML mutex. The mutex will
11056 correctly block multiple threads from attempting to create the same
11060 Increased the number of available Owner Ids for namespace object tracking
11061 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
11063 some machines with a large number of ACPI tables (either static or
11066 Fixed a problem with the AcpiExec utility where a fault could occur when
11068 -b switch (batch mode) is used.
11070 Enhanced the namespace dump routine to output the owner ID for each
11073 Code and Data Size: The current and previous library sizes for the core
11074 subsystem are shown below. These are the code and data sizes for the
11075 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11077 values do not include any ACPI driver or OSPM code. The debug version of
11079 code includes the debug output trace mechanism and has a much larger code
11080 and data size. Note that these values will vary depending on the
11082 of the compiler and the compiler options used during generation.
11085 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11086 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11088 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11089 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
11092 2) iASL Compiler/Disassembler:
11094 Fixed a parse error during compilation of certain Switch/Case constructs.
11096 simplify the parse, the grammar now allows for multiple Default
11098 and this error is now detected and flagged during the analysis phase.
11100 Disassembler: The disassembly now includes the contents of the original
11101 table header within a comment at the start of the file. This includes the
11102 name and version of the original ASL compiler.
11104 ----------------------------------------
11105 17 November 2005. Summary of changes for version 20051117:
11107 1) ACPI CA Core Subsystem:
11109 Fixed a problem in the AML parser where the method thread count could be
11110 decremented below zero if any errors occurred during the method parse
11112 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
11114 This also fixed a related regression with the mechanism that detects and
11115 corrects methods that cannot properly handle reentrancy (related to the
11116 deployment of the new OwnerId mechanism.)
11118 Eliminated the pre-parsing of control methods (to detect errors) during
11119 table load. Related to the problem above, this was causing unwind issues
11121 any errors occurred during the parse, and it seemed to be overkill. A
11123 load should not be aborted if there are problems with any single control
11124 method, thus rendering this feature rather pointless.
11126 Fixed a problem with the new table-driven resource manager where an
11128 buffer overflow could occur for small resource templates.
11130 Implemented a new external interface, AcpiGetVendorResource. This
11132 will find and return a vendor-defined resource descriptor within a _CRS
11134 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
11137 Removed the length limit (200) on string objects as per the upcoming ACPI
11138 3.0A specification. This affects the following areas of the interpreter:
11140 any implicit conversion of a Buffer to a String, 2) a String object
11142 of the ASL Concatentate operator, 3) the String object result of the ASL
11145 Fixed a problem in the Windows OS interface layer (OSL) where a
11147 on a semaphore object would incorrectly timeout. This allows the
11148 multithreading features of the AcpiExec utility to work properly under
11151 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
11152 the recently added file named "utresrc.c".
11154 Code and Data Size: The current and previous library sizes for the core
11155 subsystem are shown below. These are the code and data sizes for the
11156 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11158 values do not include any ACPI driver or OSPM code. The debug version of
11160 code includes the debug output trace mechanism and has a much larger code
11161 and data size. Note that these values will vary depending on the
11163 of the compiler and the compiler options used during generation.
11166 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
11167 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11169 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11170 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11173 2) iASL Compiler/Disassembler:
11175 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
11176 specification. For the iASL compiler, this means that string literals
11178 the source ASL can be of any length.
11180 Enhanced the listing output to dump the AML code for resource descriptors
11181 immediately after the ASL code for each descriptor, instead of in a block
11183 the end of the entire resource template.
11185 Enhanced the compiler debug output to dump the entire original parse tree
11186 constructed during the parse phase, before any transforms are applied to
11188 tree. The transformed tree is dumped also.
11190 ----------------------------------------
11191 02 November 2005. Summary of changes for version 20051102:
11193 1) ACPI CA Core Subsystem:
11195 Modified the subsystem initialization sequence to improve GPE support.
11197 GPE initialization has been split into two parts in order to defer
11199 of the _PRW methods (Power Resources for Wake) until after the hardware
11201 fully initialized and the SCI handler is installed. This allows the _PRW
11202 methods to access fields protected by the Global Lock. This will fix
11204 where a NO_GLOBAL_LOCK exception has been seen during initialization.
11206 Converted the ACPI internal object disassemble and display code within
11208 AML debugger to fully table-driven operation, reducing code size and
11209 increasing maintainability.
11211 Fixed a regression with the ConcatenateResTemplate() ASL operator
11213 in the 20051021 release.
11215 Implemented support for "local" internal ACPI object types within the
11216 debugger "Object" command and the AcpiWalkNamespace external interfaces.
11217 These local types include RegionFields, BankFields, IndexFields, Alias,
11221 Moved common AML resource handling code into a new file, "utresrc.c".
11223 code is shared by both the Resource Manager and the AML Debugger.
11225 Code and Data Size: The current and previous library sizes for the core
11226 subsystem are shown below. These are the code and data sizes for the
11227 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11229 values do not include any ACPI driver or OSPM code. The debug version of
11231 code includes the debug output trace mechanism and has a much larger code
11232 and data size. Note that these values will vary depending on the
11234 of the compiler and the compiler options used during generation.
11237 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11238 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11240 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
11241 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11244 2) iASL Compiler/Disassembler:
11246 Fixed a problem with very large initializer lists (more than 4000
11248 for both Buffer and Package objects where the parse stack could overflow.
11250 Enhanced the pre-compile source code scan for non-ASCII characters to
11252 characters within comment fields. The scan is now always performed and is
11254 longer optional, detecting invalid characters within a source file
11255 immediately rather than during the parse phase or later.
11257 Enhanced the ASL grammar definition to force early reductions on all
11259 style grammar elements so that the overall parse stack usage is greatly
11260 reduced. This should improve performance and reduce the possibility of
11264 Eliminated all reduce/reduce conflicts in the iASL parser generation.
11266 with the addition of a %expected statement, the compiler generates from
11267 source with no warnings.
11269 Fixed a possible segment fault in the disassembler if the input filename
11270 does not contain a "dot" extension (Thomas Renninger).
11272 ----------------------------------------
11273 21 October 2005. Summary of changes for version 20051021:
11275 1) ACPI CA Core Subsystem:
11277 Implemented support for the EM64T and other x86-64 processors. This
11278 essentially entails recognizing that these processors support non-aligned
11279 memory transfers. Previously, all 64-bit processors were assumed to lack
11280 hardware support for non-aligned transfers.
11282 Completed conversion of the Resource Manager to nearly full table-driven
11283 operation. Specifically, the resource conversion code (convert AML to
11284 internal format and the reverse) and the debug code to dump internal
11285 resource descriptors are fully table-driven, reducing code and data size
11287 improving maintainability.
11289 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
11291 on 64-bit processors instead of a fixed 32-bit word. (With assistance
11293 Alexey Starikovskiy)
11295 Implemented support within the resource conversion code for the Type-
11296 Specific byte within the various ACPI 3.0 *WordSpace macros.
11298 Fixed some issues within the resource conversion code for the type-
11300 flags for both Memory and I/O address resource descriptors. For Memory,
11301 implemented support for the MTP and TTP flags. For I/O, split the TRS and
11302 TTP flags into two separate fields.
11304 Code and Data Size: The current and previous library sizes for the core
11305 subsystem are shown below. These are the code and data sizes for the
11306 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11308 values do not include any ACPI driver or OSPM code. The debug version of
11310 code includes the debug output trace mechanism and has a much larger code
11311 and data size. Note that these values will vary depending on the
11313 of the compiler and the compiler options used during generation.
11316 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11317 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11319 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11320 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11324 2) iASL Compiler/Disassembler:
11326 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
11328 corresponding ResourceSource string was not also present in a resource
11329 descriptor declaration. This restriction caused problems with existing
11330 AML/ASL code that includes the Index byte without the string. When such
11332 was disassembled, it could not be compiled without modification. Further,
11333 the modified code created a resource template with a different size than
11335 original, breaking code that used fixed offsets into the resource
11339 Removed a recent feature of the disassembler to ignore a lone
11341 byte. This byte is now emitted if present so that the exact AML can be
11342 reproduced when the disassembled code is recompiled.
11344 Improved comments and text alignment for the resource descriptor code
11345 emitted by the disassembler.
11347 Implemented disassembler support for the ACPI 3.0 AccessSize field within
11349 Register() resource descriptor.
11351 ----------------------------------------
11352 30 September 2005. Summary of changes for version 20050930:
11354 1) ACPI CA Core Subsystem:
11356 Completed a major overhaul of the Resource Manager code - specifically,
11357 optimizations in the area of the AML/internal resource conversion code.
11359 code has been optimized to simplify and eliminate duplicated code, CPU
11361 use has been decreased by optimizing function parameters and local
11362 variables, and naming conventions across the manager have been
11364 for clarity and ease of maintenance (this includes function, parameter,
11365 variable, and struct/typedef names.) The update may force changes in some
11366 driver code, depending on how resources are handled by the host OS.
11368 All Resource Manager dispatch and information tables have been moved to a
11369 single location for clarity and ease of maintenance. One new file was
11370 created, named "rsinfo.c".
11372 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
11373 guarantee that the argument is not evaluated twice, making them less
11375 to macro side-effects. However, since there exists the possibility of
11376 additional stack use if a particular compiler cannot optimize them (such
11378 in the debug generation case), the original macros are optionally
11380 Note that some invocations of the return_VALUE macro may now cause size
11381 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
11383 eliminate these. (From Randy Dunlap)
11385 Implemented a new mechanism to enable debug tracing for individual
11387 methods. A new external interface, AcpiDebugTrace, is provided to enable
11388 this mechanism. The intent is to allow the host OS to easily enable and
11389 disable tracing for problematic control methods. This interface can be
11390 easily exposed to a user or debugger interface if desired. See the file
11391 psxface.c for details.
11393 AcpiUtCallocate will now return a valid pointer if a length of zero is
11394 specified - a length of one is used and a warning is issued. This matches
11395 the behavior of AcpiUtAllocate.
11397 Code and Data Size: The current and previous library sizes for the core
11398 subsystem are shown below. These are the code and data sizes for the
11399 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11401 values do not include any ACPI driver or OSPM code. The debug version of
11403 code includes the debug output trace mechanism and has a much larger code
11404 and data size. Note that these values will vary depending on the
11406 of the compiler and the compiler options used during generation.
11409 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11410 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11412 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11413 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11416 2) iASL Compiler/Disassembler:
11418 A remark is issued if the effective compile-time length of a package or
11419 buffer is zero. Previously, this was a warning.
11421 ----------------------------------------
11422 16 September 2005. Summary of changes for version 20050916:
11424 1) ACPI CA Core Subsystem:
11426 Fixed a problem within the Resource Manager where support for the Generic
11427 Register descriptor was not fully implemented. This descriptor is now
11429 recognized, parsed, disassembled, and displayed.
11431 Completely restructured the Resource Manager code to utilize table-driven
11432 dispatch and lookup, eliminating many of the large switch() statements.
11434 reduces overall subsystem code size and code complexity. Affects the
11435 resource parsing and construction, disassembly, and debug dump output.
11437 Cleaned up and restructured the debug dump output for all resource
11438 descriptors. Improved readability of the output and reduced code size.
11440 Fixed a problem where changes to internal data structures caused the
11441 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
11443 Code and Data Size: The current and previous library sizes for the core
11444 subsystem are shown below. These are the code and data sizes for the
11445 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11447 values do not include any ACPI driver or OSPM code. The debug version of
11449 code includes the debug output trace mechanism and has a much larger code
11450 and data size. Note that these values will vary depending on the
11452 of the compiler and the compiler options used during generation.
11455 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11456 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11458 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11459 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11462 2) iASL Compiler/Disassembler:
11464 Updated the disassembler to automatically insert an EndDependentFn()
11466 into the ASL stream if this macro is missing in the original AML code,
11467 simplifying compilation of the resulting ASL module.
11469 Fixed a problem in the disassembler where a disassembled ResourceSource
11470 string (within a large resource descriptor) was not surrounded by quotes
11472 not followed by a comma, causing errors when the resulting ASL module was
11473 compiled. Also, escape sequences within a ResourceSource string are now
11474 handled correctly (especially "\\")
11476 ----------------------------------------
11477 02 September 2005. Summary of changes for version 20050902:
11479 1) ACPI CA Core Subsystem:
11481 Fixed a problem with the internal Owner ID allocation and deallocation
11482 mechanisms for control method execution and recursive method invocation.
11483 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
11484 messages seen on some systems. Recursive method invocation depth is
11485 currently limited to 255. (Alexey Starikovskiy)
11487 Completely eliminated all vestiges of support for the "module-level
11488 executable code" until this support is fully implemented and debugged.
11490 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
11491 some systems that invoke this support.
11493 Fixed a problem within the resource manager code where the transaction
11495 for a 64-bit address descriptor were handled incorrectly in the type-
11496 specific flag byte.
11498 Consolidated duplicate code within the address descriptor resource
11500 code, reducing overall subsystem code size.
11502 Fixed a fault when using the AML debugger "disassemble" command to
11503 disassemble individual control methods.
11505 Removed references to the "release_current" directory within the Unix
11508 Code and Data Size: The current and previous core subsystem library sizes
11509 are shown below. These are the code and data sizes for the acpica.lib
11510 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
11511 include any ACPI driver or OSPM code. The debug version of the code
11513 the debug output trace mechanism and has a much larger code and data
11515 Note that these values will vary depending on the efficiency of the
11517 and the compiler options used during generation.
11520 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11521 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11523 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11524 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11527 2) iASL Compiler/Disassembler:
11529 Implemented an error check for illegal duplicate values in the interrupt
11531 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
11534 Implemented error checking for the Irq() and IrqNoFlags() macros to
11536 too many values in the interrupt list (16 max) and invalid values in the
11537 list (range 0 - 15)
11539 The maximum length string literal within an ASL file is now restricted to
11540 200 characters as per the ACPI specification.
11542 Fixed a fault when using the -ln option (generate namespace listing).
11544 Implemented an error check to determine if a DescriptorName within a
11545 resource descriptor has already been used within the current scope.
11547 ----------------------------------------
11548 15 August 2005. Summary of changes for version 20050815:
11550 1) ACPI CA Core Subsystem:
11552 Implemented a full bytewise compare to determine if a table load request
11554 attempting to load a duplicate table. The compare is performed if the
11556 signatures and table lengths match. This will allow different tables with
11557 the same OEM Table ID and revision to be loaded - probably against the
11559 specification, but discovered in the field nonetheless.
11561 Added the changes.txt logfile to each of the zipped release packages.
11563 Code and Data Size: Current and previous core subsystem library sizes are
11564 shown below. These are the code and data sizes for the acpica.lib
11566 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11567 any ACPI driver or OSPM code. The debug version of the code includes the
11568 debug output trace mechanism and has a much larger code and data size.
11570 that these values will vary depending on the efficiency of the compiler
11572 the compiler options used during generation.
11575 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11576 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11578 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11579 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11582 2) iASL Compiler/Disassembler:
11584 Fixed a problem where incorrect AML code could be generated for Package
11585 objects if optimization is disabled (via the -oa switch).
11587 Fixed a problem with where incorrect AML code is generated for variable-
11588 length packages when the package length is not specified and the number
11590 initializer values is greater than 255.
11593 ----------------------------------------
11594 29 July 2005. Summary of changes for version 20050729:
11596 1) ACPI CA Core Subsystem:
11598 Implemented support to ignore an attempt to install/load a particular
11600 table more than once. Apparently there exists BIOS code that repeatedly
11601 attempts to load the same SSDT upon certain events. With assistance from
11602 Venkatesh Pallipadi.
11604 Restructured the main interface to the AML parser in order to correctly
11605 handle all exceptional conditions. This will prevent leakage of the
11607 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11609 machines. With assistance from Alexey Starikovskiy.
11611 Support for "module level code" has been disabled in this version due to
11613 number of issues that have appeared on various machines. The support can
11615 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11616 compilation. When the issues are fully resolved, the code will be enabled
11620 Modified the internal functions for debug print support to define the
11621 FunctionName parameter as a (const char *) for compatibility with
11623 built-in macros such as __FUNCTION__, etc.
11625 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11627 Implemented support to display an object count summary for the AML
11629 commands Object and Methods.
11631 Code and Data Size: Current and previous core subsystem library sizes are
11632 shown below. These are the code and data sizes for the acpica.lib
11634 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11635 any ACPI driver or OSPM code. The debug version of the code includes the
11636 debug output trace mechanism and has a much larger code and data size.
11638 that these values will vary depending on the efficiency of the compiler
11640 the compiler options used during generation.
11643 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11644 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11646 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11647 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11650 2) iASL Compiler/Disassembler:
11652 Fixed a regression that appeared in the 20050708 version of the compiler
11653 where an error message was inadvertently emitted for invocations of the
11655 reserved control method.
11657 ----------------------------------------
11658 08 July 2005. Summary of changes for version 20050708:
11660 1) ACPI CA Core Subsystem:
11662 The use of the CPU stack in the debug version of the subsystem has been
11663 considerably reduced. Previously, a debug structure was declared in every
11664 function that used the debug macros. This structure has been removed in
11665 favor of declaring the individual elements as parameters to the debug
11666 functions. This reduces the cumulative stack use during nested execution
11668 ACPI function calls at the cost of a small increase in the code size of
11670 debug version of the subsystem. With assistance from Alexey Starikovskiy
11674 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11675 headers to define a macro that will return the current function name at
11676 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11678 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11679 compiler-dependent header, the function name is saved on the CPU stack
11681 pointer per function.) This mechanism is used because apparently there
11682 exists no standard ANSI-C defined macro that that returns the function
11685 Redesigned and reimplemented the "Owner ID" mechanism used to track
11686 namespace objects created/deleted by ACPI tables and control method
11687 execution. A bitmap is now used to allocate and free the IDs, thus
11689 the wraparound problem present in the previous implementation. The size
11691 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11694 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11696 flag definitions within the headers for the predefined ACPI tables. These
11697 have been replaced by UINT8_BIT in order to increase the code portability
11699 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11700 eliminate bitfields entirely because of a lack of portability.
11702 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11704 is a frequently used function and this improvement increases the
11706 of the entire subsystem (Alexey Starikovskiy).
11708 Fixed several possible memory leaks and the inverse - premature object
11709 deletion (Alexey Starikovskiy).
11711 Code and Data Size: Current and previous core subsystem library sizes are
11712 shown below. These are the code and data sizes for the acpica.lib
11714 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11715 any ACPI driver or OSPM code. The debug version of the code includes the
11716 debug output trace mechanism and has a much larger code and data size.
11718 that these values will vary depending on the efficiency of the compiler
11720 the compiler options used during generation.
11723 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11724 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11726 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11727 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11729 ----------------------------------------
11730 24 June 2005. Summary of changes for version 20050624:
11732 1) ACPI CA Core Subsystem:
11734 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11735 the host-defined cache object. This allows the OSL implementation to
11737 and type this object in any manner desired, simplifying the OSL
11738 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11739 Linux, and should be defined in the OS-specific header file for other
11740 operating systems as required.
11742 Changed the interface to AcpiOsAcquireObject to directly return the
11743 requested object as the function return (instead of ACPI_STATUS.) This
11744 change was made for performance reasons, since this is the purpose of the
11745 interface in the first place. AcpiOsAcquireObject is now similar to the
11746 AcpiOsAllocate interface.
11748 Implemented a new AML debugger command named Businfo. This command
11750 information about all devices that have an associate _PRT object. The
11752 _HID, _UID, and _CID are displayed for these devices.
11754 Modified the initialization sequence in AcpiInitializeSubsystem to call
11756 OSL interface AcpiOslInitialize first, before any local initialization.
11758 change was required because the global initialization now calls OSL
11761 Enhanced the Dump command to display the entire contents of Package
11763 (including all sub-objects and their values.)
11765 Restructured the code base to split some files because of size and/or
11766 because the code logically belonged in a separate file. New files are
11768 below. All makefiles and project files included in the ACPI CA release
11771 utilities/utcache.c /* Local cache interfaces */
11772 utilities/utmutex.c /* Local mutex support */
11773 utilities/utstate.c /* State object support */
11774 interpreter/parser/psloop.c /* Main AML parse loop */
11776 Code and Data Size: Current and previous core subsystem library sizes are
11777 shown below. These are the code and data sizes for the acpica.lib
11779 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11780 any ACPI driver or OSPM code. The debug version of the code includes the
11781 debug output trace mechanism and has a much larger code and data size.
11783 that these values will vary depending on the efficiency of the compiler
11785 the compiler options used during generation.
11788 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11789 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11791 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11792 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11795 2) iASL Compiler/Disassembler:
11797 Fixed a regression introduced in version 20050513 where the use of a
11799 object within a Case() statement caused a compile time exception. The
11800 original behavior has been restored (a Match() operator is emitted.)
11802 ----------------------------------------
11803 17 June 2005. Summary of changes for version 20050617:
11805 1) ACPI CA Core Subsystem:
11807 Moved the object cache operations into the OS interface layer (OSL) to
11809 the host OS to handle these operations if desired (for example, the Linux
11810 OSL will invoke the slab allocator). This support is optional; the
11812 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11814 code in the ACPI CA core. The new OSL interfaces are shown below. See
11815 utalloc.c for an example implementation, and acpiosxf.h for the exact
11816 interface definitions. With assistance from Alexey Starikovskiy.
11820 AcpiOsAcquireObject
11821 AcpiOsReleaseObject
11823 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11825 and restore a flags parameter. This fits better with many OS lock models.
11826 Note: the current execution state (interrupt handler or not) is no longer
11827 passed to these interfaces. If necessary, the OSL must determine this
11829 by itself, a simple and fast operation. With assistance from Alexey
11832 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11833 present if the revision of the RSDP was 2 or greater. According to the
11835 specification, the XSDT is optional in all cases, and the table manager
11836 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11837 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11841 Fixed an interpreter problem with the Mid() operator in the case of an
11843 string where the resulting output string is of zero length. It now
11845 returns a valid, null terminated string object instead of a string object
11846 with a null pointer.
11848 Fixed a problem with the control method argument handling to allow a
11850 to an Arg object that already contains an object of type Device. The
11852 object is now correctly overwritten. Previously, an error was returned.
11855 Enhanced the debugger Find command to emit object values in addition to
11857 found object pathnames. The output format is the same as the dump
11861 Enhanced the debugger Set command. It now has the ability to set the
11863 of any Named integer object in the namespace (Previously, only method
11865 and args could be set.)
11867 Code and Data Size: Current and previous core subsystem library sizes are
11868 shown below. These are the code and data sizes for the acpica.lib
11870 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11871 any ACPI driver or OSPM code. The debug version of the code includes the
11872 debug output trace mechanism and has a much larger code and data size.
11874 that these values will vary depending on the efficiency of the compiler
11876 the compiler options used during generation.
11879 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11880 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11882 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11883 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11886 2) iASL Compiler/Disassembler:
11888 Fixed a regression in the disassembler where if/else/while constructs
11890 output incorrectly. This problem was introduced in the previous release
11891 (20050526). This problem also affected the single-step disassembly in the
11894 Fixed a problem where compiling the reserved _OSI method would randomly
11896 rarely) produce compile errors.
11898 Enhanced the disassembler to emit compilable code in the face of
11900 AML resource descriptors. If the optional ResourceSourceIndex is present,
11901 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11902 disassembly. Otherwise, the resulting code cannot be compiled without
11905 ----------------------------------------
11906 26 May 2005. Summary of changes for version 20050526:
11908 1) ACPI CA Core Subsystem:
11910 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11911 the module level (not within a control method.) These opcodes are
11913 exactly once at the time the table is loaded. This type of code was legal
11915 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11917 order to provide backwards compatibility with earlier BIOS
11919 This eliminates the "Encountered executable code at module level" warning
11920 that was previously generated upon detection of such code.
11922 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11923 inadvertently be generated during the lookup of namespace objects in the
11924 second pass parse of ACPI tables and control methods. It appears that
11926 problem could occur during the resolution of forward references to
11930 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11931 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11932 allows the deadlock detection debug code to be compiled out in the normal
11933 case, improving mutex performance (and overall subsystem performance)
11936 Implemented a handful of miscellaneous fixes for possible memory leaks on
11937 error conditions and error handling control paths. These fixes were
11938 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11940 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11942 to prevent a fault in this error case.
11944 Code and Data Size: Current and previous core subsystem library sizes are
11945 shown below. These are the code and data sizes for the acpica.lib
11947 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11948 any ACPI driver or OSPM code. The debug version of the code includes the
11949 debug output trace mechanism and has a much larger code and data size.
11951 that these values will vary depending on the efficiency of the compiler
11953 the compiler options used during generation.
11956 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11957 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11959 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11960 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11963 2) iASL Compiler/Disassembler:
11965 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11966 the module level (not within a control method.) These operators will be
11967 executed once at the time the table is loaded. This type of code was
11969 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11970 compiler in order to provide backwards compatibility with earlier BIOS
11974 The ACPI integer width (specified via the table revision ID or the -r
11975 override, 32 or 64 bits) is now used internally during compile-time
11977 folding to ensure that constants are truncated to 32 bits if necessary.
11978 Previously, the revision ID value was only emitted in the AML table
11981 An error message is now generated for the Mutex and Method operators if
11983 SyncLevel parameter is outside the legal range of 0 through 15.
11985 Fixed a problem with the Method operator ParameterTypes list handling
11987 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11989 The actual underlying implementation of method argument typechecking is
11990 still under development, however.
11992 ----------------------------------------
11993 13 May 2005. Summary of changes for version 20050513:
11995 1) ACPI CA Core Subsystem:
11997 Implemented support for PCI Express root bridges -- added support for
11999 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
12001 The interpreter now automatically truncates incoming 64-bit constants to
12003 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
12005 also affects the iASL compiler constant folding. (Note: as per below, the
12006 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
12008 Fixed a problem where string and buffer objects with "static" pointers
12009 (pointers to initialization data within an ACPI table) were not handled
12010 consistently. The internal object copy operation now always copies the
12012 to a newly allocated buffer, regardless of whether the source object is
12015 Fixed a problem with the FromBCD operator where an implicit result
12016 conversion was improperly performed while storing the result to the
12018 operand. Since this is an "explicit conversion" operator, the implicit
12019 conversion should never be performed on the output.
12021 Fixed a problem with the CopyObject operator where a copy to an existing
12022 named object did not always completely overwrite the existing object
12024 at name. Specifically, a buffer-to-buffer copy did not delete the
12028 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
12030 structs for consistency.
12032 Code and Data Size: Current and previous core subsystem library sizes are
12033 shown below. These are the code and data sizes for the acpica.lib
12035 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12036 any ACPI driver or OSPM code. The debug version of the code includes the
12037 debug output trace mechanism and has a much larger code and data size.
12039 that these values will vary depending on the efficiency of the compiler
12041 the compiler options used during generation.
12044 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
12045 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
12046 Current Release: (Same sizes)
12047 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
12048 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
12051 2) iASL Compiler/Disassembler:
12053 The compiler now emits a warning if an attempt is made to generate a 64-
12055 integer constant from within a 32-bit ACPI table (Revision < 2). The
12057 is truncated to 32 bits.
12059 Fixed a problem with large package objects: if the static length of the
12060 package is greater than 255, the "variable length package" opcode is
12061 emitted. Previously, this caused an error. This requires an update to the
12062 ACPI spec, since it currently (incorrectly) states that packages larger
12064 255 elements are not allowed.
12066 The disassembler now correctly handles variable length packages and
12068 larger than 255 elements.
12070 ----------------------------------------
12071 08 April 2005. Summary of changes for version 20050408:
12073 1) ACPI CA Core Subsystem:
12075 Fixed three cases in the interpreter where an "index" argument to an ASL
12076 function was still (internally) 32 bits instead of the required 64 bits.
12077 This was the Index argument to the Index, Mid, and Match operators.
12079 The "strupr" function is now permanently local (AcpiUtStrupr), since this
12081 not a POSIX-defined function and not present in most kernel-level C
12082 libraries. All references to the C library strupr function have been
12086 Completed the deployment of static functions/prototypes. All prototypes
12088 the static attribute have been moved from the headers to the owning C
12091 Implemented an extract option (-e) for the AcpiBin utility (AML binary
12092 utility). This option allows the utility to extract individual ACPI
12094 from the output of AcpiDmp. It provides the same functionality of the
12095 acpixtract.pl perl script without the worry of setting the correct perl
12096 options. AcpiBin runs on Windows and has not yet been generated/validated
12098 the Linux/Unix environment (but should be soon).
12100 Updated and fixed the table dump option for AcpiBin (-d). This option
12101 converts a single ACPI table to a hex/ascii file, similar to the output
12105 Code and Data Size: Current and previous core subsystem library sizes are
12106 shown below. These are the code and data sizes for the acpica.lib
12108 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12109 any ACPI driver or OSPM code. The debug version of the code includes the
12110 debug output trace mechanism and has a much larger code and data size.
12112 that these values will vary depending on the efficiency of the compiler
12114 the compiler options used during generation.
12117 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
12118 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
12120 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
12121 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
12124 2) iASL Compiler/Disassembler:
12126 Disassembler fix: Added a check to ensure that the table length found in
12128 ACPI table header within the input file is not longer than the actual
12130 file size. This indicates some kind of file or table corruption.
12132 ----------------------------------------
12133 29 March 2005. Summary of changes for version 20050329:
12135 1) ACPI CA Core Subsystem:
12137 An error is now generated if an attempt is made to create a Buffer Field
12139 length zero (A CreateField with a length operand of zero.)
12141 The interpreter now issues a warning whenever executable code at the
12143 level is detected during ACPI table load. This will give some idea of the
12144 prevalence of this type of code.
12146 Implemented support for references to named objects (other than control
12147 methods) within package objects.
12149 Enhanced package object output for the debug object. Package objects are
12151 completely dumped, showing all elements.
12153 Enhanced miscellaneous object output for the debug object. Any object can
12154 now be written to the debug object (for example, a device object can be
12155 written, and the type of the object will be displayed.)
12157 The "static" qualifier has been added to all local functions across both
12159 core subsystem and the iASL compiler.
12161 The number of "long" lines (> 80 chars) within the source has been
12162 significantly reduced, by about 1/3.
12164 Cleaned up all header files to ensure that all CA/iASL functions are
12165 prototyped (even static functions) and the formatting is consistent.
12167 Two new header files have been added, acopcode.h and acnames.h.
12169 Removed several obsolete functions that were no longer used.
12171 Code and Data Size: Current and previous core subsystem library sizes are
12172 shown below. These are the code and data sizes for the acpica.lib
12174 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12175 any ACPI driver or OSPM code. The debug version of the code includes the
12176 debug output trace mechanism and has a much larger code and data size.
12178 that these values will vary depending on the efficiency of the compiler
12180 the compiler options used during generation.
12183 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12184 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12186 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
12187 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
12191 2) iASL Compiler/Disassembler:
12193 Fixed a problem with the resource descriptor generation/support. For the
12194 ResourceSourceIndex and the ResourceSource fields, both must be present,
12196 both must be not present - can't have one without the other.
12198 The compiler now returns non-zero from the main procedure if any errors
12200 occurred during the compilation.
12203 ----------------------------------------
12204 09 March 2005. Summary of changes for version 20050309:
12206 1) ACPI CA Core Subsystem:
12208 The string-to-buffer implicit conversion code has been modified again
12210 a change to the ACPI specification. In order to match the behavior of
12212 other major ACPI implementation, the target buffer is no longer truncated
12214 the source string is smaller than an existing target buffer. This change
12215 requires an update to the ACPI spec, and should eliminate the recent
12216 AE_AML_BUFFER_LIMIT issues.
12218 The "implicit return" support was rewritten to a new algorithm that
12220 the general case. Rather than attempt to determine when a method is about
12222 exit, the result of every ASL operator is saved momentarily until the
12224 next ASL operator is executed. Therefore, no matter how the method exits,
12225 there will always be a saved implicit return value. This feature is only
12226 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
12228 AE_AML_NO_RETURN_VALUE errors when enabled.
12230 Implemented implicit conversion support for the predicate (operand) of
12232 If, Else, and While operators. String and Buffer arguments are
12234 converted to Integers.
12236 Changed the string-to-integer conversion behavior to match the new ACPI
12237 errata: "If no integer object exists, a new integer is created. The ASCII
12238 string is interpreted as a hexadecimal constant. Each string character is
12239 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
12240 with the first character as the most significant digit, and ending with
12242 first non-hexadecimal character or end-of-string." This means that the
12244 non-hex character terminates the conversion and this is the code that was
12247 Fixed a problem where the ObjectType operator would fail (fault) when
12249 on an Index of a Package which pointed to a null package element. The
12250 operator now properly returns zero (Uninitialized) in this case.
12252 Fixed a problem where the While operator used excessive memory by not
12253 properly popping the result stack during execution. There was no memory
12255 after execution, however. (Code provided by Valery Podrezov.)
12257 Fixed a problem where references to control methods within Package
12259 caused the method to be invoked, instead of producing a reference object
12260 pointing to the method.
12262 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
12264 improve performance and reduce code size. (Code provided by Alexey
12267 Code and Data Size: Current and previous core subsystem library sizes are
12268 shown below. These are the code and data sizes for the acpica.lib
12270 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12271 any ACPI driver or OSPM code. The debug version of the code includes the
12272 debug output trace mechanism and has a much larger code and data size.
12274 that these values will vary depending on the efficiency of the compiler
12276 the compiler options used during generation.
12279 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12280 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12282 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12283 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12286 2) iASL Compiler/Disassembler:
12288 Fixed a problem with the Return operator with no arguments. Since the AML
12289 grammar for the byte encoding requires an operand for the Return opcode,
12291 compiler now emits a Return(Zero) for this case. An ACPI specification
12292 update has been written for this case.
12294 For tables other than the DSDT, namepath optimization is automatically
12295 disabled. This is because SSDTs can be loaded anywhere in the namespace,
12297 compiler has no knowledge of where, and thus cannot optimize namepaths.
12299 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
12300 inadvertently omitted from the ACPI specification, and will require an
12301 update to the spec.
12303 The source file scan for ASCII characters is now optional (-a). This
12305 was made because some vendors place non-ascii characters within comments.
12306 However, the scan is simply a brute-force byte compare to ensure all
12307 characters in the file are in the range 0x00 to 0x7F.
12309 Fixed a problem with the CondRefOf operator where the compiler was
12310 inappropriately checking for the existence of the target. Since the point
12312 the operator is to check for the existence of the target at run-time, the
12313 compiler no longer checks for the target existence.
12315 Fixed a problem where errors generated from the internal AML interpreter
12316 during constant folding were not handled properly, causing a fault.
12318 Fixed a problem with overly aggressive range checking for the Stall
12319 operator. The valid range (max 255) is now only checked if the operand is
12321 type Integer. All other operand types cannot be statically checked.
12323 Fixed a problem where control method references within the RefOf,
12325 and ObjectType operators were not treated properly. They are now treated
12327 actual references, not method invocations.
12329 Fixed and enhanced the "list namespace" option (-ln). This option was
12331 a number of releases ago.
12333 Improved error handling for the Field, IndexField, and BankField
12335 The compiler now cleanly reports and recovers from errors in the field
12336 component (FieldUnit) list.
12338 Fixed a disassembler problem where the optional ResourceDescriptor fields
12339 TRS and TTP were not always handled correctly.
12341 Disassembler - Comments in output now use "//" instead of "/*"
12343 ----------------------------------------
12344 28 February 2005. Summary of changes for version 20050228:
12346 1) ACPI CA Core Subsystem:
12348 Fixed a problem where the result of an Index() operator (an object
12349 reference) must increment the reference count on the target object for
12351 life of the object reference.
12353 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
12354 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
12356 resource descriptors.
12358 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
12359 Space Descriptor" string, indicating interpreter support for the
12363 Implemented header support for the new ACPI 3.0 FADT flag bits.
12365 Implemented header support for the new ACPI 3.0 PCI Express bits for the
12367 status/enable registers.
12369 Updated header support for the MADT processor local Apic struct and MADT
12370 platform interrupt source struct for new ACPI 3.0 fields.
12372 Implemented header support for the SRAT and SLIT ACPI tables.
12374 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
12378 Code and Data Size: Current and previous core subsystem library sizes are
12379 shown below. These are the code and data sizes for the acpica.lib
12381 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12382 any ACPI driver or OSPM code. The debug version of the code includes the
12383 debug output trace mechanism and has a much larger code and data size.
12385 that these values will vary depending on the efficiency of the compiler
12387 the compiler options used during generation.
12390 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12391 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12393 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12394 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12397 2) iASL Compiler/Disassembler:
12399 Fixed a problem with the internal 64-bit String-to-integer conversion
12401 strings less than two characters long.
12403 Fixed a problem with constant folding where the result of the Index()
12404 operator can not be considered a constant. This means that Index() cannot
12406 a type3 opcode and this will require an update to the ACPI specification.
12408 Disassembler: Implemented support for the TTP, MTP, and TRS resource
12409 descriptor fields. These fields were inadvertently ignored and not output
12411 the disassembly of the resource descriptor.
12414 ----------------------------------------
12415 11 February 2005. Summary of changes for version 20050211:
12417 1) ACPI CA Core Subsystem:
12419 Implemented ACPI 3.0 support for implicit conversion within the Match()
12420 operator. MatchObjects can now be of type integer, buffer, or string
12422 of just type integer. Package elements are implicitly converted to the
12424 of the MatchObject. This change aligns the behavior of Match() with the
12425 behavior of the other logical operators (LLess(), etc.) It also requires
12427 errata change to the ACPI specification as this support was intended for
12428 ACPI 3.0, but was inadvertently omitted.
12430 Fixed a problem with the internal implicit "to buffer" conversion.
12432 that are converted to buffers will cause buffer truncation if the string
12434 smaller than the target buffer. Integers that are converted to buffers
12436 not cause buffer truncation, only zero extension (both as per the ACPI
12437 spec.) The problem was introduced when code was added to truncate the
12438 buffer, but this should not be performed in all cases, only the string
12441 Fixed a problem with the Buffer and Package operators where the
12443 would get confused if two such operators were used as operands to an ASL
12444 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
12445 stack was not being popped after the execution of these operators,
12447 in an AE_NO_RETURN_VALUE exception.
12449 Fixed a problem with constructs of the form Store(Index(...),...). The
12450 reference object returned from Index was inadvertently resolved to an
12452 value. This problem was introduced in version 20050114 when the behavior
12454 Store() was modified to restrict the object types that can be used as the
12455 source operand (to match the ACPI specification.)
12457 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
12459 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
12461 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
12463 Code and Data Size: Current and previous core subsystem library sizes are
12464 shown below. These are the code and data sizes for the acpica.lib
12466 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12467 any ACPI driver or OSPM code. The debug version of the code includes the
12468 debug output trace mechanism and has a much larger code and data size.
12470 that these values will vary depending on the efficiency of the compiler
12472 the compiler options used during generation.
12475 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12476 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12478 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12479 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12482 2) iASL Compiler/Disassembler:
12484 Fixed a code generation problem in the constant folding optimization code
12485 where incorrect code was generated if a constant was reduced to a buffer
12486 object (i.e., a reduced type 5 opcode.)
12488 Fixed a typechecking problem for the ToBuffer operator. Caused by an
12489 incorrect return type in the internal opcode information table.
12491 ----------------------------------------
12492 25 January 2005. Summary of changes for version 20050125:
12494 1) ACPI CA Core Subsystem:
12496 Fixed a recently introduced problem with the Global Lock where the
12497 underlying semaphore was not created. This problem was introduced in
12498 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
12499 Acquire() operation on _GL.
12501 The local object cache is now optional, and is disabled by default. Both
12502 AcpiExec and the iASL compiler enable the cache because they run in user
12503 mode and this enhances their performance. #define
12504 ACPI_ENABLE_OBJECT_CACHE
12505 to enable the local cache.
12507 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
12509 optional "implicit return" support where an error was returned if no
12511 object was expected, but one was implicitly returned. AE_OK is now
12513 in this case and the implicitly returned object is deleted.
12514 AcpiUtEvaluateObject is only occasionally used, and only to execute
12516 methods such as _STA and _INI where the return type is known up front.
12518 Fixed a few issues with the internal convert-to-integer code. It now
12520 an error if an attempt is made to convert a null string, a string of only
12521 blanks/tabs, or a zero-length buffer. This affects both implicit
12523 and explicit conversion via the ToInteger() operator.
12525 The internal debug code in AcpiUtAcquireMutex has been commented out. It
12527 not needed for normal operation and should increase the performance of
12529 entire subsystem. The code remains in case it is needed for debug
12533 The AcpiExec source and makefile are included in the Unix/Linux package
12537 Code and Data Size: Current and previous core subsystem library sizes are
12538 shown below. These are the code and data sizes for the acpica.lib
12540 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12541 any ACPI driver or OSPM code. The debug version of the code includes the
12542 debug output trace mechanism and has a much larger code and data size.
12544 that these values will vary depending on the efficiency of the compiler
12546 the compiler options used during generation.
12549 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12550 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12552 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12553 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12555 2) iASL Compiler/Disassembler:
12557 Switch/Case support: A warning is now issued if the type of the Switch
12559 cannot be determined at compile time. For example, Switch(Arg0) will
12560 generate the warning, and the type is assumed to be an integer. As per
12562 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
12566 Switch/Case support: Implemented support for buffer and string objects as
12567 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
12568 buffers and strings.
12570 Switch/Case support: The emitted code for the LEqual() comparisons now
12572 the switch value as the first operand, not the second. The case value is
12574 the second operand, and this allows the case value to be implicitly
12575 converted to the type of the switch value, not the other way around.
12577 Switch/Case support: Temporary variables are now emitted immediately
12579 the control method, not at the global level. This means that there are
12581 36 temps available per-method, not 36 temps per-module as was the case
12583 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
12585 ----------------------------------------
12586 14 January 2005. Summary of changes for version 20050114:
12588 Added 2005 copyright to all module headers. This affects every module in
12589 the core subsystem, iASL compiler, and the utilities.
12591 1) ACPI CA Core Subsystem:
12593 Fixed an issue with the String-to-Buffer conversion code where the string
12594 null terminator was not included in the buffer after conversion, but
12596 is existing ASL that assumes the string null terminator is included. This
12598 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12599 introduced in the previous version when the code was updated to correctly
12600 set the converted buffer size as per the ACPI specification. The ACPI
12602 is ambiguous and will be updated to specify that the null terminator must
12604 included in the converted buffer. This also affects the ToBuffer() ASL
12607 Fixed a problem with the Mid() ASL/AML operator where it did not work
12608 correctly on Buffer objects. Newly created sub-buffers were not being
12613 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12614 performed on the OemId and OemTableId table header fields. These fields
12616 not null terminated, so strncmp is now used instead of strcmp.
12618 Implemented a restriction on the Store() ASL/AML operator to align the
12619 behavior with the ACPI specification. Previously, any object could be
12621 as the source operand. Now, the only objects that may be used are
12623 Buffers, Strings, Packages, Object References, and DDB Handles. If
12624 necessary, the original behavior can be restored by enabling the
12625 EnableInterpreterSlack flag.
12627 Enhanced the optional "implicit return" support to allow an implicit
12629 value from methods that are invoked externally via the AcpiEvaluateObject
12630 interface. This enables implicit returns from the _STA and _INI methods,
12633 Changed the Revision() ASL/AML operator to return the current version of
12635 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12637 the supported ACPI version (This is the function of the _REV method).
12639 Updated the _REV predefined method to return the currently supported
12643 Implemented batch mode option for the AcpiExec utility (-b).
12645 Code and Data Size: Current and previous core subsystem library sizes are
12646 shown below. These are the code and data sizes for the acpica.lib
12648 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12649 any ACPI driver or OSPM code. The debug version of the code includes the
12650 debug output trace mechanism and has a much larger code and data size.
12652 that these values will vary depending on the efficiency of the compiler
12654 the compiler options used during generation.
12657 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12658 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12660 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12661 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12663 ----------------------------------------
12664 10 December 2004. Summary of changes for version 20041210:
12666 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12667 ACPI CA core subsystem.
12669 1) ACPI CA Core Subsystem:
12671 Fixed a problem in the ToDecimalString operator where the resulting
12673 length was incorrectly calculated. The length is now calculated exactly,
12674 eliminating incorrect AE_STRING_LIMIT exceptions.
12676 Fixed a problem in the ToHexString operator to allow a maximum 200
12678 string to be produced.
12680 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12682 routine where the length of the resulting buffer was not truncated to the
12683 new size (if the target buffer already existed).
12685 Code and Data Size: Current and previous core subsystem library sizes are
12686 shown below. These are the code and data sizes for the acpica.lib
12688 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12689 any ACPI driver or OSPM code. The debug version of the code includes the
12690 debug output trace mechanism and has a much larger code and data size.
12692 that these values will vary depending on the efficiency of the compiler
12694 the compiler options used during generation.
12697 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12698 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12700 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12701 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12704 2) iASL Compiler/Disassembler:
12706 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12707 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12708 Includes support in the disassembler.
12710 Implemented support for the new (ACPI 3.0) parameter to the Register
12714 Fixed a problem where the _HE resource name for the Interrupt macro was
12715 referencing bit 0 instead of bit 1.
12717 Implemented check for maximum 255 interrupts in the Interrupt macro.
12719 Fixed a problem with the predefined resource descriptor names where
12720 incorrect AML code was generated if the offset within the resource buffer
12721 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12722 but did not update the surrounding package lengths.
12724 Changes to the Dma macro: All channels within the channel list must be
12726 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12727 optional (default is BusMaster).
12729 Implemented check for maximum 7 data bytes for the VendorShort macro.
12731 The ReadWrite parameter is now optional for the Memory32 and similar
12734 ----------------------------------------
12735 03 December 2004. Summary of changes for version 20041203:
12737 1) ACPI CA Core Subsystem:
12739 The low-level field insertion/extraction code (exfldio) has been
12741 rewritten to eliminate unnecessary complexity, bugs, and boundary
12744 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12746 operators where the input operand could be inadvertently deleted if no
12747 conversion was necessary (e.g., if the input to ToInteger was an Integer
12750 Fixed a problem with the ToDecimalString and ToHexString where an
12752 exception code was returned if the resulting string would be > 200 chars.
12753 AE_STRING_LIMIT is now returned.
12755 Fixed a problem with the Concatenate operator where AE_OK was always
12756 returned, even if the operation failed.
12758 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12759 semaphores to be allocated.
12761 Code and Data Size: Current and previous core subsystem library sizes are
12762 shown below. These are the code and data sizes for the acpica.lib
12764 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12765 any ACPI driver or OSPM code. The debug version of the code includes the
12766 debug output trace mechanism and has a much larger code and data size.
12768 that these values will vary depending on the efficiency of the compiler
12770 the compiler options used during generation.
12773 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12774 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12776 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12777 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12780 2) iASL Compiler/Disassembler:
12782 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12783 recently introduced in 20041119.
12785 Fixed a problem with the ToUUID macro where the upper nybble of each
12787 byte was inadvertently set to zero.
12789 ----------------------------------------
12790 19 November 2004. Summary of changes for version 20041119:
12792 1) ACPI CA Core Subsystem:
12794 Fixed a problem in the internal ConvertToInteger routine where new
12796 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12798 buffers and strings to integers.
12800 Implemented support to store a value to an Index() on a String object.
12802 is an ACPI 2.0 feature that had not yet been implemented.
12804 Implemented new behavior for storing objects to individual package
12806 (via the Index() operator). The previous behavior was to invoke the
12808 conversion rules if an object was already present at the index. The new
12809 behavior is to simply delete any existing object and directly store the
12811 object. Although the ACPI specification seems unclear on this subject,
12813 ACPI implementations behave in this manner. (This is the root of the
12814 AE_BAD_HEX_CONSTANT issue.)
12816 Modified the RSDP memory scan mechanism to support the extended checksum
12818 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12819 RSDP signature is found with a valid checksum.
12821 Code and Data Size: Current and previous core subsystem library sizes are
12822 shown below. These are the code and data sizes for the acpica.lib
12824 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12825 any ACPI driver or OSPM code. The debug version of the code includes the
12826 debug output trace mechanism and has a much larger code and data size.
12828 that these values will vary depending on the efficiency of the compiler
12830 the compiler options used during generation.
12833 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12834 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12836 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12837 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12840 2) iASL Compiler/Disassembler:
12842 Fixed a missing semicolon in the aslcompiler.y file.
12844 ----------------------------------------
12845 05 November 2004. Summary of changes for version 20041105:
12847 1) ACPI CA Core Subsystem:
12849 Implemented support for FADT revision 2. This was an interim table
12851 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12853 Implemented optional support to allow uninitialized LocalX and ArgX
12854 variables in a control method. The variables are initialized to an
12856 object with a value of zero. This support is enabled by setting the
12857 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12859 Implemented support for Integer objects for the SizeOf operator. Either
12861 or 8 is returned, depending on the current integer size (32-bit or 64-
12863 depending on the parent table revision).
12865 Fixed a problem in the implementation of the SizeOf and ObjectType
12867 where the operand was resolved to a value too early, causing incorrect
12868 return values for some objects.
12870 Fixed some possible memory leaks during exceptional conditions.
12872 Code and Data Size: Current and previous core subsystem library sizes are
12873 shown below. These are the code and data sizes for the acpica.lib
12875 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12876 any ACPI driver or OSPM code. The debug version of the code includes the
12877 debug output trace mechanism and has a much larger code and data size.
12879 that these values will vary depending on the efficiency of the compiler
12881 the compiler options used during generation.
12884 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12885 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12887 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12888 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12891 2) iASL Compiler/Disassembler:
12893 Implemented support for all ACPI 3.0 reserved names and methods.
12895 Implemented all ACPI 3.0 grammar elements in the front-end, including
12896 support for semicolons.
12898 Implemented the ACPI 3.0 Function() and ToUUID() macros
12900 Fixed a problem in the disassembler where a Scope() operator would not be
12901 emitted properly if the target of the scope was in another table.
12903 ----------------------------------------
12904 15 October 2004. Summary of changes for version 20041015:
12906 Note: ACPI CA is currently undergoing an in-depth and complete formal
12907 evaluation to test/verify the following areas. Other suggestions are
12908 welcome. This will result in an increase in the frequency of releases and
12909 the number of bug fixes in the next few months.
12910 - Functional tests for all ASL/AML operators
12911 - All implicit/explicit type conversions
12912 - Bit fields and operation regions
12913 - 64-bit math support and 32-bit-only "truncated" math support
12914 - Exceptional conditions, both compiler and interpreter
12915 - Dynamic object deletion and memory leaks
12916 - ACPI 3.0 support when implemented
12917 - External interfaces to the ACPI subsystem
12920 1) ACPI CA Core Subsystem:
12922 Fixed two alignment issues on 64-bit platforms - within debug statements
12924 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12926 field within the non-aligned ACPI generic address structure.
12928 Fixed a problem in the Increment and Decrement operators where incorrect
12929 operand resolution could result in the inadvertent modification of the
12930 original integer when the integer is passed into another method as an
12931 argument and the arg is then incremented/decremented.
12933 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12935 BCD number were truncated during conversion.
12937 Fixed a problem in the ToDecimal operator where the length of the
12939 string could be set incorrectly too long if the input operand was a
12943 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12945 within a buffer would prematurely terminate a compare between buffer
12948 Added a check for string overflow (>200 characters as per the ACPI
12949 specification) during the Concatenate operator with two string operands.
12951 Code and Data Size: Current and previous core subsystem library sizes are
12952 shown below. These are the code and data sizes for the acpica.lib
12954 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12955 any ACPI driver or OSPM code. The debug version of the code includes the
12956 debug output trace mechanism and has a much larger code and data size.
12958 that these values will vary depending on the efficiency of the compiler
12960 the compiler options used during generation.
12963 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12964 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12966 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12967 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12971 2) iASL Compiler/Disassembler:
12973 Allow the use of the ObjectType operator on uninitialized Locals and Args
12974 (returns 0 as per the ACPI specification).
12976 Fixed a problem where the compiler would fault if there was a syntax
12978 in the FieldName of all of the various CreateXXXField operators.
12980 Disallow the use of lower case letters within the EISAID macro, as per
12982 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12984 U is an uppercase letter and N is a hex digit.
12987 ----------------------------------------
12988 06 October 2004. Summary of changes for version 20041006:
12990 1) ACPI CA Core Subsystem:
12992 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12993 implements a 64-bit timer with 100 nanosecond granularity.
12995 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12996 implement the ACPI 3.0 Timer operator. This allows the host OS to
12998 the timer with the best clock available. Also, it keeps the core
13000 out of the clock handling business, since the host OS (usually) performs
13003 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
13004 functions use a 64-bit address which is part of the packed ACPI Generic
13005 Address Structure. Since the structure is non-aligned, the alignment
13007 are now used to extract the address to a local variable before use.
13009 Fixed a problem where the ToInteger operator assumed all input strings
13011 hexadecimal. The operator now handles both decimal strings and hex
13013 (prefixed with "0x").
13015 Fixed a problem where the string length in the string object created as a
13016 result of the internal ConvertToString procedure could be incorrect. This
13017 potentially affected all implicit conversions and also the
13019 and ToHexString operators.
13021 Fixed two problems in the ToString operator. If the length parameter was
13022 zero, an incorrect string object was created and the value of the input
13023 length parameter was inadvertently changed from zero to Ones.
13025 Fixed a problem where the optional ResourceSource string in the
13027 resource macro was ignored.
13029 Simplified the interfaces to the internal division functions, reducing
13031 size and complexity.
13033 Code and Data Size: Current and previous core subsystem library sizes are
13034 shown below. These are the code and data sizes for the acpica.lib
13036 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13037 any ACPI driver or OSPM code. The debug version of the code includes the
13038 debug output trace mechanism and has a much larger code and data size.
13040 that these values will vary depending on the efficiency of the compiler
13042 the compiler options used during generation.
13045 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
13046 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
13048 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13049 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
13052 2) iASL Compiler/Disassembler:
13054 Implemented support for the ACPI 3.0 Timer operator.
13056 Fixed a problem where the Default() operator was inadvertently ignored in
13058 Switch/Case block. This was a problem in the translation of the Switch
13059 statement to If...Else pairs.
13061 Added support to allow a standalone Return operator, with no parentheses
13065 Fixed a problem with code generation for the ElseIf operator where the
13066 translated Else...If parse tree was improperly constructed leading to the
13069 ----------------------------------------
13070 22 September 2004. Summary of changes for version 20040922:
13072 1) ACPI CA Core Subsystem:
13074 Fixed a problem with the implementation of the LNot() operator where
13076 was not returned for the TRUE case. Changed the code to return Ones
13078 of (!Arg) which was usually 1. This change affects iASL constant folding
13080 this operator also.
13082 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
13084 initialized properly -- Now zero the entire buffer in this case where the
13085 buffer already exists.
13087 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
13088 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
13089 related code considerably. This will require changes/updates to all OS
13090 interface layers (OSLs.)
13092 Implemented a new external interface, AcpiInstallExceptionHandler, to
13094 a system exception handler to be installed. This handler is invoked upon
13096 run-time exception that occurs during control method execution.
13098 Added support for the DSDT in AcpiTbFindTable. This allows the
13099 DataTableRegion() operator to access the local copy of the DSDT.
13101 Code and Data Size: Current and previous core subsystem library sizes are
13102 shown below. These are the code and data sizes for the acpica.lib
13104 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13105 any ACPI driver or OSPM code. The debug version of the code includes the
13106 debug output trace mechanism and has a much larger code and data size.
13108 that these values will vary depending on the efficiency of the compiler
13110 the compiler options used during generation.
13113 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
13114 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
13116 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
13117 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
13120 2) iASL Compiler/Disassembler:
13122 Fixed a problem with constant folding and the LNot operator. LNot was
13123 returning 1 in the TRUE case, not Ones as per the ACPI specification.
13125 could result in the generation of an incorrect folded/reduced constant.
13127 End-Of-File is now allowed within a "//"-style comment. A parse error no
13128 longer occurs if such a comment is at the very end of the input ASL
13132 Implemented the "-r" option to override the Revision in the table header.
13133 The initial use of this option will be to simplify the evaluation of the
13135 interpreter by allowing a single ASL source module to be compiled for
13137 32-bit or 64-bit integers.
13140 ----------------------------------------
13141 27 August 2004. Summary of changes for version 20040827:
13143 1) ACPI CA Core Subsystem:
13145 - Implemented support for implicit object conversion in the non-numeric
13146 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
13148 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
13149 the second operand is implicitly converted on the fly to match the type
13151 the first operand. For example:
13153 LEqual (Source1, Source2)
13155 Source1 and Source2 must each evaluate to an integer, a string, or a
13157 The data type of Source1 dictates the required type of Source2. Source2
13159 implicitly converted if necessary to match the type of Source1.
13161 - Updated and corrected the behavior of the string conversion support.
13163 rules concerning conversion of buffers to strings (according to the ACPI
13164 specification) are as follows:
13166 ToDecimalString - explicit byte-wise conversion of buffer to string of
13167 decimal values (0-255) separated by commas. ToHexString - explicit byte-
13169 conversion of buffer to string of hex values (0-FF) separated by commas.
13170 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
13172 copy with no transform except NULL terminated. Any other implicit buffer-
13174 string conversion - byte-wise conversion of buffer to string of hex
13176 (0-FF) separated by spaces.
13178 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
13180 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
13182 one byte too short in the case of a node in the root scope. This could
13183 cause a fault during debug output.
13185 - Code and Data Size: Current and previous core subsystem library sizes
13187 shown below. These are the code and data sizes for the acpica.lib
13189 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13190 any ACPI driver or OSPM code. The debug version of the code includes the
13191 debug output trace mechanism and has a much larger code and data size.
13193 that these values will vary depending on the efficiency of the compiler
13195 the compiler options used during generation.
13198 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
13199 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13201 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
13202 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
13205 2) iASL Compiler/Disassembler:
13207 - Fixed a Linux generation error.
13210 ----------------------------------------
13211 16 August 2004. Summary of changes for version 20040816:
13213 1) ACPI CA Core Subsystem:
13215 Designed and implemented support within the AML interpreter for the so-
13216 called "implicit return". This support returns the result of the last
13218 operation within a control method, in the absence of an explicit Return()
13219 operator. A few machines depend on this behavior, even though it is not
13220 explicitly supported by the ASL language. It is optional support that
13222 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
13224 Removed support for the PCI_Config address space from the internal low
13226 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
13227 support was not used internally, and would not work correctly anyway
13229 the PCI bus number and segment number were not supported. There are
13230 separate interfaces for PCI configuration space access because of the
13234 Code and Data Size: Current and previous core subsystem library sizes are
13235 shown below. These are the code and data sizes for the acpica.lib
13237 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13238 any ACPI driver or OSPM code. The debug version of the code includes the
13239 debug output trace mechanism and has a much larger code and data size.
13241 that these values will vary depending on the efficiency of the compiler
13243 the compiler options used during generation.
13246 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13247 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13249 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
13250 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13253 2) iASL Compiler/Disassembler:
13255 Fixed a problem where constants in ASL expressions at the root level (not
13256 within a control method) could be inadvertently truncated during code
13257 generation. This problem was introduced in the 20040715 release.
13260 ----------------------------------------
13261 15 July 2004. Summary of changes for version 20040715:
13263 1) ACPI CA Core Subsystem:
13265 Restructured the internal HW GPE interfaces to pass/track the current
13267 of interrupts (enabled/disabled) in order to avoid possible deadlock and
13268 increase flexibility of the interfaces.
13270 Implemented a "lexicographical compare" for String and Buffer objects
13272 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
13274 as per further clarification to the ACPI specification. Behavior is
13276 to C library "strcmp".
13278 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
13279 external function. In the 32-bit non-debug case, the stack use has been
13280 reduced from 168 bytes to 32 bytes.
13282 Deployed a new run-time configuration flag,
13283 AcpiGbl_EnableInterpreterSlack,
13284 whose purpose is to allow the AML interpreter to forgive certain bad AML
13285 constructs. Default setting is FALSE.
13287 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
13289 support code. If enabled, it allows field access to go beyond the end of
13291 region definition if the field is within the region length rounded up to
13293 next access width boundary (a common coding error.)
13295 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
13296 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
13298 symbols are lowercased by the latest version of the AcpiSrc tool.
13300 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
13301 rename "Register" to simply "Reg" to prevent certain compilers from
13304 Code and Data Size: Current and previous core subsystem library sizes are
13305 shown below. These are the code and data sizes for the acpica.lib
13307 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13308 any ACPI driver or OSPM code. The debug version of the code includes the
13309 debug output trace mechanism and has a much larger code and data size.
13311 that these values will vary depending on the efficiency of the compiler
13313 the compiler options used during generation.
13316 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13317 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13319 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13320 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13323 2) iASL Compiler/Disassembler:
13325 Implemented full support for Package objects within the Case() operator.
13326 Note: The Break() operator is currently not supported within Case blocks
13327 (TermLists) as there is some question about backward compatibility with
13332 Fixed a problem where complex terms were not supported properly within
13336 Eliminated extraneous warning for compiler-emitted reserved names of the
13337 form "_T_x". (Used in Switch/Case operators.)
13339 Eliminated optimization messages for "_T_x" objects and small constants
13340 within the DefinitionBlock operator.
13343 ----------------------------------------
13344 15 June 2004. Summary of changes for version 20040615:
13346 1) ACPI CA Core Subsystem:
13348 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13350 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13353 All directory names in the entire source package are lower case, as they
13354 were in earlier releases.
13356 Implemented "Disassemble" command in the AML debugger that will
13358 a single control method.
13360 Code and Data Size: Current and previous core subsystem library sizes are
13361 shown below. These are the code and data sizes for the acpica.lib
13363 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13364 any ACPI driver or OSPM code. The debug version of the code includes the
13365 debug output trace mechanism and has a much larger code and data size.
13367 that these values will vary depending on the efficiency of the compiler
13369 the compiler options used during generation.
13372 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13373 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13376 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13377 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13380 2) iASL Compiler/Disassembler:
13382 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13384 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13387 All directory names in the entire source package are lower case, as they
13388 were in earlier releases.
13390 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
13393 Fixed an issue with the Windows version of the compiler where later
13395 of Windows place the FADT in the registry under the name "FADT" and not
13396 "FACP" as earlier versions did. This applies when using the -g or -
13397 d<nofilename> options. The compiler now looks for both strings as
13400 Fixed a problem with compiler namepath optimization where a namepath
13402 the Scope() operator could not be optimized if the namepath was a subpath
13404 the current scope path.
13406 ----------------------------------------
13407 27 May 2004. Summary of changes for version 20040527:
13409 1) ACPI CA Core Subsystem:
13411 Completed a new design and implementation for EBDA (Extended BIOS Data
13413 support in the RSDP scan code. The original code improperly scanned for
13415 EBDA by simply scanning from memory location 0 to 0x400. The correct
13417 is to first obtain the EBDA pointer from within the BIOS data area, then
13418 scan 1K of memory starting at the EBDA pointer. There appear to be few
13420 any machines that place the RSDP in the EBDA, however.
13422 Integrated a fix for a possible fault during evaluation of BufferField
13423 arguments. Obsolete code that was causing the problem was removed.
13425 Found and fixed a problem in the Field Support Code where data could be
13426 corrupted on a bit field read that starts on an aligned boundary but does
13427 not end on an aligned boundary. Merged the read/write "datum length"
13428 calculation code into a common procedure.
13430 Rolled in a couple of changes to the FreeBSD-specific header.
13433 Code and Data Size: Current and previous core subsystem library sizes are
13434 shown below. These are the code and data sizes for the acpica.lib
13436 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13437 any ACPI driver or OSPM code. The debug version of the code includes the
13438 debug output trace mechanism and has a much larger code and data size.
13440 that these values will vary depending on the efficiency of the compiler
13442 the compiler options used during generation.
13445 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13446 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13448 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13449 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13452 2) iASL Compiler/Disassembler:
13454 Fixed a generation warning produced by some overly-verbose compilers for
13458 ----------------------------------------
13459 14 May 2004. Summary of changes for version 20040514:
13461 1) ACPI CA Core Subsystem:
13463 Fixed a problem where hardware GPE enable bits sometimes not set properly
13464 during and after GPE method execution. Result of 04/27 changes.
13466 Removed extra "clear all GPEs" when sleeping/waking.
13468 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
13469 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
13471 the new AcpiEv* calls as appropriate.
13473 ACPI_OS_NAME was removed from the OS-specific headers. The default name
13475 now "Microsoft Windows NT" for maximum compatibility. However this can
13477 changed by modifying the acconfig.h file.
13479 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
13480 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
13482 Run _INI methods on ThermalZone objects. This is against the ACPI
13483 specification, but there is apparently ASL code in the field that has
13485 _INI methods, and apparently "other" AML interpreters execute them.
13487 Performed a full 16/32/64 bit lint that resulted in some small changes.
13489 Added a sleep simulation command to the AML debugger to test sleep code.
13491 Code and Data Size: Current and previous core subsystem library sizes are
13492 shown below. These are the code and data sizes for the acpica.lib
13494 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13495 any ACPI driver or OSPM code. The debug version of the code includes the
13496 debug output trace mechanism and has a much larger code and data size.
13498 that these values will vary depending on the efficiency of the compiler
13500 the compiler options used during generation.
13503 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13504 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13506 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13507 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13509 ----------------------------------------
13510 27 April 2004. Summary of changes for version 20040427:
13512 1) ACPI CA Core Subsystem:
13514 Completed a major overhaul of the GPE handling within ACPI CA. There are
13515 now three types of GPEs: wake-only, runtime-only, and combination
13517 The only GPEs allowed to be combination wake/run are for button-style
13518 devices such as a control-method power button, control-method sleep
13520 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
13522 referenced by any _PRW methods are marked for "runtime" and hardware
13523 enabled. Any GPE that is referenced by a _PRW method is marked for
13525 (and disabled at runtime). However, at sleep time, only those GPEs that
13526 have been specifically enabled for wake via the AcpiEnableGpe interface
13528 actually be hardware enabled.
13530 A new external interface has been added, AcpiSetGpeType(), that is meant
13532 be used by device drivers to force a GPE to a particular type. It will
13534 especially useful for the drivers for the button devices mentioned above.
13536 Completed restructuring of the ACPI CA initialization sequence so that
13537 default operation region handlers are installed before GPEs are
13539 and the _PRW methods are executed. This will prevent errors when the
13541 methods attempt to access system memory or I/O space.
13543 GPE enable/disable no longer reads the GPE enable register. We now keep
13545 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
13546 thus no longer depend on the hardware to maintain these bits.
13548 Always clear the wake status and fixed/GPE status bits before sleep, even
13551 Improved the AML debugger output for displaying the GPE blocks and their
13554 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
13558 Fixed a problem where the physical address was incorrectly calculated
13560 the Load() operator was used to directly load from an Operation Region
13562 loading from a Field object.) Also added check for minimum table length
13566 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
13569 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
13570 consistency with the other fields returned.
13572 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
13573 structure for each GPE in the system, so the size of this structure is
13576 CPU stack requirement reduction: Cleaned up the method execution and
13578 evaluation paths so that now a parameter structure is passed, instead of
13579 copying the various method parameters over and over again.
13581 In evregion.c: Correctly exit and reenter the interpreter region if and
13582 only if dispatching an operation region request to a user-installed
13584 Do not exit/reenter when dispatching to a default handler (e.g., default
13585 system memory or I/O handlers)
13588 Notes for updating drivers for the new GPE support. The following
13590 must be made to ACPI-related device drivers that are attached to one or
13592 GPEs: (This information will be added to the ACPI CA Programmer
13595 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13597 explicitly call AcpiEnableGpe.
13598 2) There is a new interface called AcpiSetGpeType. This should be called
13599 before enabling the GPE. Also, this interface will automatically disable
13600 the GPE if it is currently enabled.
13601 3) AcpiEnableGpe no longer supports a GPE type flag.
13603 Specific drivers that must be changed:
13605 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13606 AeGpeHandler, NULL);
13607 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13608 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13610 2) Button Drivers (Power, Lid, Sleep):
13611 Run _PRW method under parent device
13612 If _PRW exists: /* This is a control-method button */
13613 Extract GPE number and possibly GpeDevice
13614 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13615 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13617 For all other devices that have _PRWs, we automatically set the GPE type
13619 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13621 must be done on a selective basis, usually requiring some kind of user
13623 to allow the user to pick the wake devices.
13626 Code and Data Size: Current and previous core subsystem library sizes are
13627 shown below. These are the code and data sizes for the acpica.lib
13629 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13630 any ACPI driver or OSPM code. The debug version of the code includes the
13631 debug output trace mechanism and has a much larger code and data size.
13633 that these values will vary depending on the efficiency of the compiler
13635 the compiler options used during generation.
13638 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13639 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13642 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13643 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13647 ----------------------------------------
13648 02 April 2004. Summary of changes for version 20040402:
13650 1) ACPI CA Core Subsystem:
13652 Fixed an interpreter problem where an indirect store through an ArgX
13653 parameter was incorrectly applying the "implicit conversion rules" during
13654 the store. From the ACPI specification: "If the target is a method local
13656 argument (LocalX or ArgX), no conversion is performed and the result is
13657 stored directly to the target". The new behavior is to disable implicit
13658 conversion during ALL stores to an ArgX.
13660 Changed the behavior of the _PRW method scan to ignore any and all errors
13661 returned by a given _PRW. This prevents the scan from aborting from the
13662 failure of any single _PRW.
13664 Moved the runtime configuration parameters from the global init procedure
13666 static variables in acglobal.h. This will allow the host to override the
13667 default values easily.
13669 Code and Data Size: Current and previous core subsystem library sizes are
13670 shown below. These are the code and data sizes for the acpica.lib
13672 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13673 any ACPI driver or OSPM code. The debug version of the code includes the
13674 debug output trace mechanism and has a much larger code and data size.
13676 that these values will vary depending on the efficiency of the compiler
13678 the compiler options used during generation.
13681 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13682 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13684 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13685 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13688 2) iASL Compiler/Disassembler:
13690 iASL now fully disassembles SSDTs. However, External() statements are
13692 generated automatically for unresolved symbols at this time. This is a
13693 planned feature for future implementation.
13695 Fixed a scoping problem in the disassembler that occurs when the type of
13697 target of a Scope() operator is overridden. This problem caused an
13698 incorrectly nested internal namespace to be constructed.
13700 Any warnings or errors that are emitted during disassembly are now
13702 out automatically so that the resulting file can be recompiled without
13706 ----------------------------------------
13707 26 March 2004. Summary of changes for version 20040326:
13709 1) ACPI CA Core Subsystem:
13711 Implemented support for "wake" GPEs via interaction between GPEs and the
13712 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13713 identified as a WAKE GPE and by default will no longer be enabled at
13714 runtime. Previously, we were blindly enabling all GPEs with a
13716 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13718 believe this has been the cause of thousands of "spurious" GPEs on some
13721 This new GPE behavior is can be reverted to the original behavior (enable
13722 ALL GPEs at runtime) via a runtime flag.
13724 Fixed a problem where aliased control methods could not access objects
13725 properly. The proper scope within the namespace was not initialized
13726 (transferred to the target of the aliased method) before executing the
13729 Fixed a potential race condition on internal object deletion on the
13731 object in AcpiEvaluateObject.
13733 Integrated a fix for resource descriptors where both _MEM and _MTP were
13734 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13735 wide, 0x0F instead of 0x03.)
13737 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13740 fault in some cases.
13742 Updated Notify() values for debug statements in evmisc.c
13744 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13746 Code and Data Size: Current and previous core subsystem library sizes are
13747 shown below. These are the code and data sizes for the acpica.lib
13749 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13750 any ACPI driver or OSPM code. The debug version of the code includes the
13751 debug output trace mechanism and has a much larger code and data size.
13753 that these values will vary depending on the efficiency of the compiler
13755 the compiler options used during generation.
13759 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13760 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13762 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13763 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13765 ----------------------------------------
13766 11 March 2004. Summary of changes for version 20040311:
13768 1) ACPI CA Core Subsystem:
13770 Fixed a problem where errors occurring during the parse phase of control
13771 method execution did not abort cleanly. For example, objects created and
13772 installed in the namespace were not deleted. This caused all subsequent
13773 invocations of the method to return the AE_ALREADY_EXISTS exception.
13775 Implemented a mechanism to force a control method to "Serialized"
13777 if the method attempts to create namespace objects. (The root of the
13778 AE_ALREADY_EXISTS problem.)
13780 Implemented support for the predefined _OSI "internal" control method.
13781 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13783 "Windows 2001.1", and can be easily upgraded for new strings as
13785 This feature will allow "other" operating systems to execute the fully
13786 tested, "Windows" code path through the ASL code
13788 Global Lock Support: Now allows multiple acquires and releases with any
13789 internal thread. Removed concept of "owning thread" for this special
13792 Fixed two functions that were inappropriately declaring large objects on
13794 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13796 method execution considerably.
13798 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13799 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13801 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13802 defined on the machine.
13804 Implemented two runtime options: One to force all control method
13806 to "Serialized" to mimic Windows behavior, another to disable _OSI
13808 if it causes problems on a given machine.
13810 Code and Data Size: Current and previous core subsystem library sizes are
13811 shown below. These are the code and data sizes for the acpica.lib
13813 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13814 any ACPI driver or OSPM code. The debug version of the code includes the
13815 debug output trace mechanism and has a much larger code and data size.
13817 that these values will vary depending on the efficiency of the compiler
13819 the compiler options used during generation.
13822 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13823 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13825 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13826 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13828 2) iASL Compiler/Disassembler:
13830 Fixed an array size problem for FreeBSD that would cause the compiler to
13833 ----------------------------------------
13834 20 February 2004. Summary of changes for version 20040220:
13837 1) ACPI CA Core Subsystem:
13839 Implemented execution of _SxD methods for Device objects in the
13840 GetObjectInfo interface.
13842 Fixed calls to _SST method to pass the correct arguments.
13844 Added a call to _SST on wake to restore to "working" state.
13846 Check for End-Of-Buffer failure case in the WalkResources interface.
13848 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13849 structures to the beginning of the file.
13851 After wake, clear GPE status register(s) before enabling GPEs.
13853 After wake, clear/enable power button. (Perhaps we should clear/enable
13855 fixed events upon wake.)
13857 Fixed a couple of possible memory leaks in the Namespace manager.
13859 Integrated latest acnetbsd.h file.
13861 ----------------------------------------
13862 11 February 2004. Summary of changes for version 20040211:
13865 1) ACPI CA Core Subsystem:
13867 Completed investigation and implementation of the call-by-reference
13868 mechanism for control method arguments.
13870 Fixed a problem where a store of an object into an indexed package could
13871 fail if the store occurs within a different method than the method that
13872 created the package.
13874 Fixed a problem where the ToDecimal operator could return incorrect
13877 Fixed a problem where the CopyObject operator could fail on some of the
13879 obscure objects (e.g., Reference objects.)
13881 Improved the output of the Debug object to display buffer, package, and
13884 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13886 the expected result.
13888 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13889 ACPI_AML_INTERNAL exception.
13891 Integrated latest version of acfreebsd.h
13893 ----------------------------------------
13894 16 January 2004. Summary of changes for version 20040116:
13896 The purpose of this release is primarily to update the copyright years in
13897 each module, thus causing a huge number of diffs. There are a few small
13898 functional changes, however.
13900 1) ACPI CA Core Subsystem:
13902 Improved error messages when there is a problem finding one or more of
13904 required base ACPI tables
13906 Reintroduced the definition of APIC_HEADER in actbl.h
13908 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13910 Removed extraneous reference to NewObj in dsmthdat.c
13914 Fixed a problem introduced in December that disabled the correct
13916 of Resource Templates
13919 ----------------------------------------
13920 03 December 2003. Summary of changes for version 20031203:
13922 1) ACPI CA Core Subsystem:
13924 Changed the initialization of Operation Regions during subsystem
13925 init to perform two entire walks of the ACPI namespace; The first
13926 to initialize the regions themselves, the second to execute the
13927 _REG methods. This fixed some interdependencies across _REG
13928 methods found on some machines.
13930 Fixed a problem where a Store(Local0, Local1) could simply update
13931 the object reference count, and not create a new copy of the
13932 object if the Local1 is uninitialized.
13934 Implemented support for the _SST reserved method during sleep
13937 Implemented support to clear the SLP_TYP and SLP_EN bits when
13938 waking up, this is apparently required by some machines.
13940 When sleeping, clear the wake status only if SleepState is not S5.
13942 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13943 pointer arithmetic advanced a string pointer too far.
13945 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13946 could be returned if the requested table has not been loaded.
13948 Within the support for IRQ resources, restructured the handling of
13949 the active and edge/level bits.
13951 Fixed a few problems in AcpiPsxExecute() where memory could be
13952 leaked under certain error conditions.
13954 Improved error messages for the cases where the ACPI mode could
13957 Code and Data Size: Current and previous core subsystem library
13958 sizes are shown below. These are the code and data sizes for the
13959 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13960 these values do not include any ACPI driver or OSPM code. The
13961 debug version of the code includes the debug output trace
13962 mechanism and has a much larger code and data size. Note that
13963 these values will vary depending on the efficiency of the compiler
13964 and the compiler options used during generation.
13966 Previous Release (20031029):
13967 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13968 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13970 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13971 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13973 2) iASL Compiler/Disassembler:
13975 Implemented a fix for the iASL disassembler where a bad index was
13976 generated. This was most noticeable on 64-bit platforms
13979 ----------------------------------------
13980 29 October 2003. Summary of changes for version 20031029:
13982 1) ACPI CA Core Subsystem:
13985 Fixed a problem where a level-triggered GPE with an associated
13986 _Lxx control method was incorrectly cleared twice.
13988 Fixed a problem with the Field support code where an access can
13989 occur beyond the end-of-region if the field is non-aligned but
13990 extends to the very end of the parent region (resulted in an
13991 AE_AML_REGION_LIMIT exception.)
13993 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13994 would not get invoked on an RTC event. The RTC event bitmasks for
13995 the PM1 registers were not being initialized properly.
13997 Implemented support for executing _STA and _INI methods for
13998 Processor objects. Although this is currently not part of the
13999 ACPI specification, there is existing ASL code that depends on the
14000 init-time execution of these methods.
14002 Implemented and deployed a GetDescriptorName function to decode
14003 the various types of internal descriptors. Guards against null
14004 descriptors during debug output also.
14006 Implemented and deployed a GetNodeName function to extract the 4-
14007 character namespace node name. This function simplifies the debug
14008 and error output, as well as guarding against null pointers during
14011 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
14012 simplify the debug and error output of 64-bit integers. This
14013 macro replaces the HIDWORD and LODWORD macros for dumping these
14016 Updated the implementation of the Stall() operator to only call
14017 AcpiOsStall(), and also return an error if the operand is larger
14018 than 255. This preserves the required behavior of not
14019 relinquishing the processor, as would happen if AcpiOsSleep() was
14020 called for "long stalls".
14022 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
14023 initialized are now treated as NOOPs.
14025 Cleaned up a handful of warnings during 64-bit generation.
14027 Fixed a reported error where and incorrect GPE number was passed
14028 to the GPE dispatch handler. This value is only used for error
14029 output, however. Used this opportunity to clean up and streamline
14030 the GPE dispatch code.
14032 Code and Data Size: Current and previous core subsystem library
14033 sizes are shown below. These are the code and data sizes for the
14034 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14035 these values do not include any ACPI driver or OSPM code. The
14037 debug version of the code includes the debug output trace
14038 mechanism and has a much larger code and data size. Note that
14039 these values will vary depending on the efficiency of the compiler
14040 and the compiler options used during generation.
14042 Previous Release (20031002):
14043 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
14044 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
14046 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
14047 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
14050 2) iASL Compiler/Disassembler:
14052 Updated the iASL compiler to return an error if the operand to the
14053 Stall() operator is larger than 255.
14056 ----------------------------------------
14057 02 October 2003. Summary of changes for version 20031002:
14060 1) ACPI CA Core Subsystem:
14062 Fixed a problem with Index Fields where the index was not
14063 incremented for fields that require multiple writes to the
14064 index/data registers (Fields that are wider than the data
14067 Fixed a problem with all Field objects where a write could go
14068 beyond the end-of-field if the field was larger than the access
14069 granularity and therefore required multiple writes to complete the
14070 request. An extra write beyond the end of the field could happen
14073 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
14074 would incorrectly be returned if the width of the Data Register
14075 was larger than the specified field access width.
14077 Completed fixes for LoadTable() and Unload() and verified their
14078 operation. Implemented full support for the "DdbHandle" object
14079 throughout the ACPI CA subsystem.
14081 Implemented full support for the MADT and ECDT tables in the ACPI
14082 CA header files. Even though these tables are not directly
14083 consumed by ACPI CA, the header definitions are useful for ACPI
14086 Integrated resource descriptor fixes posted to the Linux ACPI
14087 list. This included checks for minimum descriptor length, and
14088 support for trailing NULL strings within descriptors that have
14089 optional string elements.
14091 Code and Data Size: Current and previous core subsystem library
14092 sizes are shown below. These are the code and data sizes for the
14093 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14094 these values do not include any ACPI driver or OSPM code. The
14095 debug version of the code includes the debug output trace
14096 mechanism and has a much larger code and data size. Note that
14097 these values will vary depending on the efficiency of the compiler
14098 and the compiler options used during generation.
14100 Previous Release (20030918):
14101 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
14102 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
14104 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
14105 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
14110 Implemented detection of non-ASCII characters within the input
14111 source ASL file. This catches attempts to compile binary (AML)
14112 files early in the compile, with an informative error message.
14114 Fixed a problem where the disassembler would fault if the output
14115 filename could not be generated or if the output file could not be
14118 ----------------------------------------
14119 18 September 2003. Summary of changes for version 20030918:
14122 1) ACPI CA Core Subsystem:
14124 Found and fixed a longstanding problem with the late execution of
14125 the various deferred AML opcodes (such as Operation Regions,
14126 Buffer Fields, Buffers, and Packages). If the name string
14127 specified for the name of the new object placed the object in a
14128 scope other than the current scope, the initialization/execution
14129 of the opcode failed. The solution to this problem was to
14130 implement a mechanism where the late execution of such opcodes
14131 does not attempt to lookup/create the name a second time in an
14132 incorrect scope. This fixes the "region size computed
14133 incorrectly" problem.
14135 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
14136 Global Lock AE_BAD_PARAMETER error.
14138 Fixed several 64-bit issues with prototypes, casting and data
14141 Removed duplicate prototype from acdisasm.h
14143 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
14145 Code and Data Size: Current and previous core subsystem library
14146 sizes are shown below. These are the code and data sizes for the
14147 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14148 these values do not include any ACPI driver or OSPM code. The
14149 debug version of the code includes the debug output trace
14150 mechanism and has a much larger code and data size. Note that
14151 these values will vary depending on the efficiency of the compiler
14152 and the compiler options used during generation.
14156 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14157 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14159 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
14160 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
14165 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
14166 correct sleep time in seconds.
14168 ----------------------------------------
14169 14 July 2003. Summary of changes for version 20030619:
14171 1) ACPI CA Core Subsystem:
14173 Parse SSDTs in order discovered, as opposed to reverse order
14176 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
14183 Dynamically allocate SDT list (suggested by Andi Kleen)
14185 proc function return value cleanups (Andi Kleen)
14187 Correctly handle NMI watchdog during long stalls (Andrew Morton)
14189 Make it so acpismp=force works (reported by Andrew Morton)
14192 ----------------------------------------
14193 19 June 2003. Summary of changes for version 20030619:
14195 1) ACPI CA Core Subsystem:
14197 Fix To/FromBCD, eliminating the need for an arch-specific #define.
14199 Do not acquire a semaphore in the S5 shutdown path.
14201 Fix ex_digits_needed for 0. (Takayoshi Kochi)
14203 Fix sleep/stall code reversal. (Andi Kleen)
14205 Revert a change having to do with control method calling
14210 acpiphp update (Takayoshi Kochi)
14212 Export acpi_disabled for sonypi (Stelian Pop)
14214 Mention acpismp=force in config help
14216 Re-add acpitable.c and acpismp=force. This improves backwards
14218 compatibility and also cleans up the code to a significant degree.
14220 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
14222 ----------------------------------------
14223 22 May 2003. Summary of changes for version 20030522:
14225 1) ACPI CA Core Subsystem:
14227 Found and fixed a reported problem where an AE_NOT_FOUND error
14228 occurred occasionally during _BST evaluation. This turned out to
14229 be an Owner ID allocation issue where a called method did not get
14230 a new ID assigned to it. Eventually, (after 64k calls), the Owner
14231 ID UINT16 would wraparound so that the ID would be the same as the
14232 caller's and the called method would delete the caller's
14235 Implemented extended error reporting for control methods that are
14236 aborted due to a run-time exception. Output includes the exact
14237 AML instruction that caused the method abort, a dump of the method
14238 locals and arguments at the time of the abort, and a trace of all
14239 nested control method calls.
14241 Modified the interpreter to allow the creation of buffers of zero
14242 length from the AML code. Implemented new code to ensure that no
14243 attempt is made to actually allocate a memory buffer (of length
14244 zero) - instead, a simple buffer object with a NULL buffer pointer
14245 and length zero is created. A warning is no longer issued when
14246 the AML attempts to create a zero-length buffer.
14248 Implemented a workaround for the "leading asterisk issue" in
14249 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
14250 asterisk is automatically removed if present in any HID, UID, or
14251 CID strings. The iASL compiler will still flag this asterisk as
14254 Implemented full support for _CID methods that return a package of
14255 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
14256 now additionally returns a device _CID list if present. This
14257 required a change to the external interface in order to pass an
14258 ACPI_BUFFER object as a parameter since the _CID list is of
14261 Fixed a problem with the new AE_SAME_HANDLER exception where
14262 handler initialization code did not know about this exception.
14264 Code and Data Size: Current and previous core subsystem library
14265 sizes are shown below. These are the code and data sizes for the
14266 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14267 these values do not include any ACPI driver or OSPM code. The
14268 debug version of the code includes the debug output trace
14269 mechanism and has a much larger code and data size. Note that
14270 these values will vary depending on the efficiency of the compiler
14271 and the compiler options used during generation.
14273 Previous Release (20030509):
14274 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14275 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14277 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14278 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14283 Fixed a bug in which we would reinitialize the ACPI interrupt
14284 after it was already working, thus disabling all ACPI and the IRQs
14285 for any other device sharing the interrupt. (Thanks to Stian
14288 Toshiba driver update (John Belmonte)
14290 Return only 0 or 1 for our interrupt handler status (Andrew
14296 Fixed a reported problem where multiple (nested) ElseIf()
14297 statements were not handled correctly by the compiler, resulting
14298 in incorrect warnings and incorrect AML code. This was a problem
14299 in both the ASL parser and the code generator.
14304 Added changes to existing interfaces, new exception codes, and new
14305 text concerning reference count object management versus garbage
14308 ----------------------------------------
14309 09 May 2003. Summary of changes for version 20030509.
14312 1) ACPI CA Core Subsystem:
14314 Changed the subsystem initialization sequence to hold off
14315 installation of address space handlers until the hardware has been
14316 initialized and the system has entered ACPI mode. This is because
14317 the installation of space handlers can cause _REG methods to be
14318 run. Previously, the _REG methods could potentially be run before
14319 ACPI mode was enabled.
14321 Fixed some memory leak issues related to address space handler and
14322 notify handler installation. There were some problems with the
14323 reference count mechanism caused by the fact that the handler
14324 objects are shared across several namespace objects.
14326 Fixed a reported problem where reference counts within the
14327 namespace were not properly updated when named objects created by
14328 method execution were deleted.
14330 Fixed a reported problem where multiple SSDTs caused a deletion
14331 issue during subsystem termination. Restructured the table data
14332 structures to simplify the linked lists and the related code.
14334 Fixed a problem where the table ID associated with secondary
14335 tables (SSDTs) was not being propagated into the namespace objects
14336 created by those tables. This would only present a problem for
14337 tables that are unloaded at run-time, however.
14339 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
14340 type as the length parameter (instead of UINT32).
14342 Solved a long-standing problem where an ALREADY_EXISTS error
14343 appears on various systems. This problem could happen when there
14344 are multiple PCI_Config operation regions under a single PCI root
14345 bus. This doesn't happen very frequently, but there are some
14346 systems that do this in the ASL.
14348 Fixed a reported problem where the internal DeleteNode function
14349 was incorrectly handling the case where a namespace node was the
14350 first in the parent's child list, and had additional peers (not
14351 the only child, but first in the list of children.)
14353 Code and Data Size: Current core subsystem library sizes are shown
14354 below. These are the code and data sizes for the acpica.lib
14355 produced by the Microsoft Visual C++ 6.0 compiler, and these
14356 values do not include any ACPI driver or OSPM code. The debug
14357 version of the code includes the debug output trace mechanism and
14358 has a much larger code and data size. Note that these values will
14359 vary depending on the efficiency of the compiler and the compiler
14360 options used during generation.
14363 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14364 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14366 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14367 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14372 Allow ":" in OS override string (Ducrot Bruno)
14374 Kobject fix (Greg KH)
14377 3 iASL Compiler/Disassembler:
14379 Fixed a problem in the generation of the C source code files (AML
14380 is emitted in C source statements for BIOS inclusion) where the
14381 Ascii dump that appears within a C comment at the end of each line
14382 could cause a compile time error if the AML sequence happens to
14383 have an open comment or close comment sequence embedded.
14386 ----------------------------------------
14387 24 April 2003. Summary of changes for version 20030424.
14390 1) ACPI CA Core Subsystem:
14392 Support for big-endian systems has been implemented. Most of the
14393 support has been invisibly added behind big-endian versions of the
14394 ACPI_MOVE_* macros.
14396 Fixed a problem in AcpiHwDisableGpeBlock() and
14397 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
14398 low level hardware write routine. The offset parameter was
14399 actually eliminated from the low level read/write routines because
14400 they had become obsolete.
14402 Fixed a problem where a handler object was deleted twice during
14403 the removal of a fixed event handler.
14408 A fix for SMP systems with link devices was contributed by
14412 (2.5) Return whether we handled the interrupt in our IRQ handler.
14413 (Linux ISRs no longer return void, so we can propagate the handler
14414 return value from the ACPI CA core back to the OS.)
14420 The ACPI CA Programmer Reference has been updated to reflect new
14421 interfaces and changes to existing interfaces.
14423 ----------------------------------------
14424 28 March 2003. Summary of changes for version 20030328.
14426 1) ACPI CA Core Subsystem:
14428 The GPE Block Device support has been completed. New interfaces
14429 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
14430 interfaces (enable, disable, clear, getstatus) have been split
14431 into separate interfaces for Fixed Events and General Purpose
14432 Events (GPEs) in order to support GPE Block Devices properly.
14434 Fixed a problem where the error message "Failed to acquire
14435 semaphore" would appear during operations on the embedded
14438 Code and Data Size: Current core subsystem library sizes are shown
14439 below. These are the code and data sizes for the acpica.lib
14440 produced by the Microsoft Visual C++ 6.0 compiler, and these
14441 values do not include any ACPI driver or OSPM code. The debug
14442 version of the code includes the debug output trace mechanism and
14443 has a much larger code and data size. Note that these values will
14444 vary depending on the efficiency of the compiler and the compiler
14445 options used during generation.
14448 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14449 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14451 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14452 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14455 ----------------------------------------
14456 28 February 2003. Summary of changes for version 20030228.
14459 1) ACPI CA Core Subsystem:
14461 The GPE handling and dispatch code has been completely overhauled
14462 in preparation for support of GPE Block Devices (ID ACPI0006).
14463 This affects internal data structures and code only; there should
14464 be no differences visible externally. One new file has been
14467 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
14468 fields that are used to determine the GPE block lengths. The
14469 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
14470 structures are ignored. This is per the ACPI specification but it
14471 isn't very clear. The full 256 Block 0/1 GPEs are now supported
14472 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
14474 In the SCI interrupt handler, removed the read of the PM1_CONTROL
14475 register to look at the SCI_EN bit. On some machines, this read
14476 causes an SMI event and greatly slows down SCI events. (This may
14477 in fact be the cause of slow battery status response on some
14480 Fixed a problem where a store of a NULL string to a package object
14481 could cause the premature deletion of the object. This was seen
14482 during execution of the battery _BIF method on some systems,
14483 resulting in no battery data being returned.
14485 Added AcpiWalkResources interface to simplify parsing of resource
14488 Code and Data Size: Current core subsystem library sizes are shown
14489 below. These are the code and data sizes for the acpica.lib
14490 produced by the Microsoft Visual C++ 6.0 compiler, and these
14491 values do not include any ACPI driver or OSPM code. The debug
14492 version of the code includes the debug output trace mechanism and
14493 has a much larger code and data size. Note that these values will
14494 vary depending on the efficiency of the compiler and the compiler
14495 options used during generation.
14498 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14499 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14501 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14502 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14507 S3 fixes (Ole Rohne)
14509 Update ACPI PHP driver with to use new acpi_walk_resource API
14512 Add S4BIOS support (Pavel Machek)
14514 Map in entire table before performing checksum (John Stultz)
14516 Expand the mem= cmdline to allow the specification of reserved and
14517 ACPI DATA blocks (Pavel Machek)
14519 Never use ACPI on VISWS
14521 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
14523 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
14524 causing us to think that some systems support C2 when they really
14527 Do not count processor objects for non-present CPUs (Thanks to
14533 Fixed a problem where ASL include files could not be found and
14536 Added support for the _PDC reserved name.
14539 ----------------------------------------
14540 22 January 2003. Summary of changes for version 20030122.
14543 1) ACPI CA Core Subsystem:
14545 Added a check for constructs of the form: Store (Local0, Local0)
14546 where Local0 is not initialized. Apparently, some BIOS
14547 programmers believe that this is a NOOP. Since this store doesn't
14548 do anything anyway, the new prototype behavior will ignore this
14549 error. This is a case where we can relax the strict checking in
14550 the interpreter in the name of compatibility.
14555 The AcpiSrc Source Conversion Utility has been released with the
14556 Linux package for the first time. This is the utility that is
14557 used to convert the ACPI CA base source code to the Linux version.
14559 (Both) Handle P_BLK lengths shorter than 6 more gracefully
14561 (Both) Move more headers to include/acpi, and delete an unused
14564 (Both) Move drivers/acpi/include directory to include/acpi
14566 (Both) Boot functions don't use cmdline, so don't pass it around
14568 (Both) Remove include of unused header (Adrian Bunk)
14570 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
14572 former now also includes the latter, acpiphp.h only needs the one,
14575 (2.5) Make it possible to select method of bios restoring after S3
14576 resume. [=> no more ugly ifdefs] (Pavel Machek)
14578 (2.5) Make proc write interfaces work (Pavel Machek)
14580 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
14582 (2.5) Break out ACPI Perf code into its own module, under cpufreq
14583 (Dominik Brodowski)
14585 (2.4) S4BIOS support (Ducrot Bruno)
14587 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
14593 Added support to disassemble SSDT and PSDTs.
14595 Implemented support to obtain SSDTs from the Windows registry if
14599 ----------------------------------------
14600 09 January 2003. Summary of changes for version 20030109.
14602 1) ACPI CA Core Subsystem:
14604 Changed the behavior of the internal Buffer-to-String conversion
14605 function. The current ACPI specification states that the contents
14606 of the buffer are "converted to a string of two-character
14607 hexadecimal numbers, each separated by a space". Unfortunately,
14608 this definition is not backwards compatible with existing ACPI 1.0
14609 implementations (although the behavior was not defined in the ACPI
14610 1.0 specification). The new behavior simply copies data from the
14611 buffer to the string until a null character is found or the end of
14612 the buffer is reached. The new String object is always null
14613 terminated. This problem was seen during the generation of _BIF
14614 battery data where incorrect strings were returned for battery
14615 type, etc. This will also require an errata to the ACPI
14618 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14619 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14621 Copyright in all module headers (both Linux and non-Linux) has be
14624 Code and Data Size: Current core subsystem library sizes are shown
14625 below. These are the code and data sizes for the acpica.lib
14626 produced by the Microsoft Visual C++ 6.0 compiler, and these
14627 values do not include any ACPI driver or OSPM code. The debug
14628 version of the code includes the debug output trace mechanism and
14629 has a much larger code and data size. Note that these values will
14630 vary depending on the efficiency of the compiler and the compiler
14631 options used during generation.
14634 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14635 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14637 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14638 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14643 Fixed an oops on module insertion/removal (Matthew Tippett)
14645 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14647 (2.5) Replace pr_debug (Randy Dunlap)
14649 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14651 (Both) Eliminate spawning of thread from timer callback, in favor
14654 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14656 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14658 (Both) Add missing statics to button.c (Pavel Machek)
14660 Several changes have been made to the source code translation
14661 utility that generates the Linux Code in order to make the code
14664 All typedefs on structs and unions have been removed in keeping
14665 with the Linux coding style.
14667 Removed the non-Linux SourceSafe module revision number from each
14670 Completed major overhaul of symbols to be lowercased for linux.
14671 Doubled the number of symbols that are lowercased.
14673 Fixed a problem where identifiers within procedure headers and
14674 within quotes were not fully lower cased (they were left with a
14677 Some C macros whose only purpose is to allow the generation of 16-
14678 bit code are now completely removed in the Linux code, increasing
14679 readability and maintainability.
14681 ----------------------------------------
14683 12 December 2002. Summary of changes for version 20021212.
14686 1) ACPI CA Core Subsystem:
14688 Fixed a problem where the creation of a zero-length AML Buffer
14689 would cause a fault.
14691 Fixed a problem where a Buffer object that pointed to a static AML
14692 buffer (in an ACPI table) could inadvertently be deleted, causing
14695 Fixed a problem where a user buffer (passed in to the external
14696 ACPI CA interfaces) could be overwritten if the buffer was too
14697 small to complete the operation, causing memory corruption.
14699 Fixed a problem in the Buffer-to-String conversion code where a
14700 string of length one was always returned, regardless of the size
14701 of the input Buffer object.
14703 Removed the NATIVE_CHAR data type across the entire source due to
14704 lack of need and lack of consistent use.
14706 Code and Data Size: Current core subsystem library sizes are shown
14707 below. These are the code and data sizes for the acpica.lib
14708 produced by the Microsoft Visual C++ 6.0 compiler, and these
14709 values do not include any ACPI driver or OSPM code. The debug
14710 version of the code includes the debug output trace mechanism and
14711 has a much larger code and data size. Note that these values will
14712 vary depending on the efficiency of the compiler and the compiler
14713 options used during generation.
14716 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14717 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14719 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14720 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14723 ----------------------------------------
14724 05 December 2002. Summary of changes for version 20021205.
14726 1) ACPI CA Core Subsystem:
14728 Fixed a problem where a store to a String or Buffer object could
14729 cause corruption of the DSDT if the object type being stored was
14730 the same as the target object type and the length of the object
14731 being stored was equal to or smaller than the original (existing)
14732 target object. This was seen to cause corruption of battery _BIF
14733 buffers if the _BIF method modified the buffer on the fly.
14735 Fixed a problem where an internal error was generated if a control
14736 method invocation was used in an OperationRegion, Buffer, or
14737 Package declaration. This was caused by the deferred parsing of
14738 the control method and thus the deferred creation of the internal
14739 method object. The solution to this problem was to create the
14740 internal method object at the moment the method is encountered in
14741 the first pass - so that subsequent references to the method will
14742 able to obtain the required parameter count and thus properly
14743 parse the method invocation. This problem presented itself as an
14744 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14746 Fixed a problem where the internal String object copy routine did
14747 not always allocate sufficient memory for the target String object
14748 and caused memory corruption. This problem was seen to cause
14749 "Allocation already present in list!" errors as memory allocation
14752 Implemented a new function for the evaluation of namespace objects
14753 that allows the specification of the allowable return object
14754 types. This simplifies a lot of code that checks for a return
14755 object of one or more specific objects returned from the
14756 evaluation (such as _STA, etc.) This may become and external
14757 function if it would be useful to ACPI-related drivers.
14759 Completed another round of prefixing #defines with "ACPI_" for
14762 Completed additional code restructuring to allow more modular
14763 linking for iASL compiler and AcpiExec. Several files were split
14764 creating new files. New files: nsparse.c dsinit.c evgpe.c
14766 Implemented an abort mechanism to terminate an executing control
14767 method via the AML debugger. This feature is useful for debugging
14768 control methods that depend (wait) for specific hardware
14771 Code and Data Size: Current core subsystem library sizes are shown
14772 below. These are the code and data sizes for the acpica.lib
14773 produced by the Microsoft Visual C++ 6.0 compiler, and these
14774 values do not include any ACPI driver or OSPM code. The debug
14775 version of the code includes the debug output trace mechanism and
14776 has a much larger code and data size. Note that these values will
14777 vary depending on the efficiency of the compiler and the compiler
14778 options used during generation.
14781 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14782 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14784 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14785 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14788 2) iASL Compiler/Disassembler
14790 Fixed a compiler code generation problem for "Interrupt" Resource
14791 Descriptors. If specified in the ASL, the optional "Resource
14792 Source Index" and "Resource Source" fields were not inserted into
14793 the correct location within the AML resource descriptor, creating
14794 an invalid descriptor.
14796 Fixed a disassembler problem for "Interrupt" resource descriptors.
14797 The optional "Resource Source Index" and "Resource Source" fields
14801 ----------------------------------------
14802 22 November 2002. Summary of changes for version 20021122.
14805 1) ACPI CA Core Subsystem:
14807 Fixed a reported problem where an object stored to a Method Local
14808 or Arg was not copied to a new object during the store - the
14809 object pointer was simply copied to the Local/Arg. This caused
14810 all subsequent operations on the Local/Arg to also affect the
14811 original source of the store operation.
14813 Fixed a problem where a store operation to a Method Local or Arg
14814 was not completed properly if the Local/Arg contained a reference
14815 (from RefOf) to a named field. The general-purpose store-to-
14816 namespace-node code is now used so that this case is handled
14819 Fixed a problem where the internal object copy routine would cause
14820 a protection fault if the object being copied was a Package and
14821 contained either 1) a NULL package element or 2) a nested sub-
14824 Fixed a problem with the GPE initialization that resulted from an
14825 ambiguity in the ACPI specification. One section of the
14826 specification states that both the address and length of the GPE
14827 block must be zero if the block is not supported. Another section
14828 implies that only the address need be zero if the block is not
14829 supported. The code has been changed so that both the address and
14830 the length must be non-zero to indicate a valid GPE block (i.e.,
14831 if either the address or the length is zero, the GPE block is
14834 Code and Data Size: Current core subsystem library sizes are shown
14835 below. These are the code and data sizes for the acpica.lib
14836 produced by the Microsoft Visual C++ 6.0 compiler, and these
14837 values do not include any ACPI driver or OSPM code. The debug
14838 version of the code includes the debug output trace mechanism and
14839 has a much larger code and data size. Note that these values will
14840 vary depending on the efficiency of the compiler and the compiler
14841 options used during generation.
14844 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14845 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14847 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14848 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14853 Cleaned up EC driver. Exported an external EC read/write
14854 interface. By going through this, other drivers (most notably
14855 sonypi) will be able to serialize access to the EC.
14858 3) iASL Compiler/Disassembler
14860 Implemented support to optionally generate include files for both
14861 ASM and C (the -i switch). This simplifies BIOS development by
14862 automatically creating include files that contain external
14863 declarations for the symbols that are created within the
14865 (optionally generated) ASM and C AML source files.
14868 ----------------------------------------
14869 15 November 2002. Summary of changes for version 20021115.
14871 1) ACPI CA Core Subsystem:
14873 Fixed a memory leak problem where an error during resolution of
14875 method arguments during a method invocation from another method
14876 failed to cleanup properly by deleting all successfully resolved
14879 Fixed a problem where the target of the Index() operator was not
14880 correctly constructed if the source object was a package. This
14881 problem has not been detected because the use of a target operand
14882 with Index() is very rare.
14884 Fixed a problem with the Index() operator where an attempt was
14885 made to delete the operand objects twice.
14887 Fixed a problem where an attempt was made to delete an operand
14888 twice during execution of the CondRefOf() operator if the target
14891 Implemented the first of perhaps several internal create object
14892 functions that create and initialize a specific object type. This
14893 consolidates duplicated code wherever the object is created, thus
14894 shrinking the size of the subsystem.
14896 Implemented improved debug/error messages for errors that occur
14897 during nested method invocations. All executing method pathnames
14898 are displayed (with the error) as the call stack is unwound - thus
14901 Fixed a problem introduced in the 10/02 release that caused
14902 premature deletion of a buffer object if a buffer was used as an
14903 ASL operand where an integer operand is required (Thus causing an
14904 implicit object conversion from Buffer to Integer.) The change in
14905 the 10/02 release was attempting to fix a memory leak (albeit
14908 Code and Data Size: Current core subsystem library sizes are shown
14909 below. These are the code and data sizes for the acpica.lib
14910 produced by the Microsoft Visual C++ 6.0 compiler, and these
14911 values do not include any ACPI driver or OSPM code. The debug
14912 version of the code includes the debug output trace mechanism and
14913 has a much larger code and data size. Note that these values will
14914 vary depending on the efficiency of the compiler and the compiler
14915 options used during generation.
14918 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14919 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14921 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14922 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14927 Changed the implementation of the ACPI semaphores to use down()
14928 instead of down_interruptable(). It is important that the
14929 execution of ACPI control methods not be interrupted by signals.
14930 Methods must run to completion, or the system may be left in an
14931 unknown/unstable state.
14933 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14937 3) iASL Compiler/Disassembler
14940 Changed the default location of output files. All output files
14941 are now placed in the current directory by default instead of in
14942 the directory of the source file. This change may affect some
14943 existing makefiles, but it brings the behavior of the compiler in
14944 line with other similar tools. The location of the output files
14945 can be overridden with the -p command line switch.
14948 ----------------------------------------
14949 11 November 2002. Summary of changes for version 20021111.
14952 0) ACPI Specification 2.0B is released and is now available at:
14953 http://www.acpi.info/index.html
14956 1) ACPI CA Core Subsystem:
14958 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14959 This includes the early detection and handoff of the request to
14960 the SMBus region handler (avoiding all of the complex field
14961 support code), and support for the bidirectional return packet
14962 from an SMBus write operation. This paves the way for the
14963 development of SMBus drivers in each host operating system.
14965 Fixed a problem where the semaphore WAIT_FOREVER constant was
14966 defined as 32 bits, but must be 16 bits according to the ACPI
14967 specification. This had the side effect of causing ASL
14968 Mutex/Event timeouts even though the ASL code requested a wait
14969 forever. Changed all internal references to the ACPI timeout
14970 parameter to 16 bits to prevent future problems. Changed the name
14971 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14973 Code and Data Size: Current core subsystem library sizes are shown
14974 below. These are the code and data sizes for the acpica.lib
14975 produced by the Microsoft Visual C++ 6.0 compiler, and these
14976 values do not include any ACPI driver or OSPM code. The debug
14977 version of the code includes the debug output trace mechanism and
14978 has a much larger code and data size. Note that these values will
14979 vary depending on the efficiency of the compiler and the compiler
14980 options used during generation.
14983 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14984 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14986 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14987 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14992 Module loading/unloading fixes (John Cagle)
14995 3) iASL Compiler/Disassembler
14997 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14999 Implemented support for the disassembly of all SMBus protocol
15000 keywords (SMBQuick, SMBWord, etc.)
15002 ----------------------------------------
15003 01 November 2002. Summary of changes for version 20021101.
15006 1) ACPI CA Core Subsystem:
15008 Fixed a problem where platforms that have a GPE1 block but no GPE0
15009 block were not handled correctly. This resulted in a "GPE
15010 overlap" error message. GPE0 is no longer required.
15012 Removed code added in the previous release that inserted nodes
15013 into the namespace in alphabetical order. This caused some side-
15014 effects on various machines. The root cause of the problem is
15015 still under investigation since in theory, the internal ordering
15016 of the namespace nodes should not matter.
15019 Enhanced error reporting for the case where a named object is not
15020 found during control method execution. The full ACPI namepath
15021 (name reference) of the object that was not found is displayed in
15024 Note: as a result of the overhaul of the namespace object types in
15025 the previous release, the namespace nodes for the predefined
15026 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
15027 instead of ACPI_TYPE_ANY. This simplifies the namespace
15028 management code but may affect code that walks the namespace tree
15029 looking for specific object types.
15031 Code and Data Size: Current core subsystem library sizes are shown
15032 below. These are the code and data sizes for the acpica.lib
15033 produced by the Microsoft Visual C++ 6.0 compiler, and these
15034 values do not include any ACPI driver or OSPM code. The debug
15035 version of the code includes the debug output trace mechanism and
15036 has a much larger code and data size. Note that these values will
15037 vary depending on the efficiency of the compiler and the compiler
15038 options used during generation.
15041 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
15042 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
15044 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
15045 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
15050 Fixed a problem introduced in the previous release where the
15051 Processor and Thermal objects were not recognized and installed in
15052 /proc. This was related to the scope type change described above.
15055 3) iASL Compiler/Disassembler
15057 Implemented the -g option to get all of the required ACPI tables
15058 from the registry and save them to files (Windows version of the
15059 compiler only.) The required tables are the FADT, FACS, and DSDT.
15061 Added ACPI table checksum validation during table disassembly in
15062 order to catch corrupted tables.
15065 ----------------------------------------
15066 22 October 2002. Summary of changes for version 20021022.
15068 1) ACPI CA Core Subsystem:
15070 Implemented a restriction on the Scope operator that the target
15071 must already exist in the namespace at the time the operator is
15072 encountered (during table load or method execution). In other
15073 words, forward references are not allowed and Scope() cannot
15074 create a new object. This changes the previous behavior where the
15075 interpreter would create the name if not found. This new behavior
15076 correctly enables the search-to-root algorithm during namespace
15077 lookup of the target name. Because of this upsearch, this fixes
15078 the known Compaq _SB_.OKEC problem and makes both the AML
15079 interpreter and iASL compiler compatible with other ACPI
15082 Completed a major overhaul of the internal ACPI object types for
15083 the ACPI Namespace and the associated operand objects. Many of
15084 these types had become obsolete with the introduction of the two-
15085 pass namespace load. This cleanup simplifies the code and makes
15086 the entire namespace load mechanism much clearer and easier to
15089 Improved debug output for tracking scope opening/closing to help
15090 diagnose scoping issues. The old scope name as well as the new
15091 scope name are displayed. Also improved error messages for
15092 problems with ASL Mutex objects and error messages for GPE
15095 Cleaned up the namespace dump code, removed obsolete code.
15097 All string output (for all namespace/object dumps) now uses the
15098 common ACPI string output procedure which handles escapes properly
15099 and does not emit non-printable characters.
15101 Fixed some issues with constants in the 64-bit version of the
15102 local C library (utclib.c)
15107 EC Driver: No longer attempts to acquire the Global Lock at
15111 3) iASL Compiler/Disassembler
15113 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
15114 2 opcodes outside of a control method. This means that the
15115 "executable" operators (versus the "namespace" operators) cannot
15116 be used at the table level; they can only be used within a control
15119 Implemented the restriction on the Scope() operator where the
15120 target must already exist in the namespace at the time the
15121 operator is encountered (during ASL compilation). In other words,
15122 forward references are not allowed and Scope() cannot create a new
15123 object. This makes the iASL compiler compatible with other ACPI
15124 implementations and makes the Scope() implementation adhere to the
15125 ACPI specification.
15127 Fixed a problem where namepath optimization for the Alias operator
15128 was optimizing the wrong path (of the two namepaths.) This caused
15129 a "Missing alias link" error message.
15131 Fixed a problem where an "unknown reserved name" warning could be
15132 incorrectly generated for names like "_SB" when the trailing
15133 underscore is not used in the original ASL.
15135 Fixed a problem where the reserved name check did not handle
15136 NamePaths with multiple NameSegs correctly. The first nameseg of
15137 the NamePath was examined instead of the last NameSeg.
15140 ----------------------------------------
15142 02 October 2002. Summary of changes for this release.
15145 1) ACPI CA Core Subsystem version 20021002:
15147 Fixed a problem where a store/copy of a string to an existing
15148 string did not always set the string length properly in the String
15151 Fixed a reported problem with the ToString operator where the
15152 behavior was identical to the ToHexString operator instead of just
15153 simply converting a raw buffer to a string data type.
15155 Fixed a problem where CopyObject and the other "explicit"
15156 conversion operators were not updating the internal namespace node
15157 type as part of the store operation.
15159 Fixed a memory leak during implicit source operand conversion
15160 where the original object was not deleted if it was converted to a
15161 new object of a different type.
15163 Enhanced error messages for all problems associated with namespace
15164 lookups. Common procedure generates and prints the lookup name as
15165 well as the formatted status.
15167 Completed implementation of a new design for the Alias support
15168 within the namespace. The existing design did not handle the case
15169 where a new object was assigned to one of the two names due to the
15170 use of an explicit conversion operator, resulting in the two names
15171 pointing to two different objects. The new design simply points
15172 the Alias name to the original name node - not to the object.
15173 This results in a level of indirection that must be handled in the
15174 name resolution mechanism.
15176 Code and Data Size: Current core subsystem library sizes are shown
15177 below. These are the code and data sizes for the acpica.lib
15178 produced by the Microsoft Visual C++ 6.0 compiler, and these
15179 values do not include any ACPI driver or OSPM code. The debug
15180 version of the code includes the debug output trace mechanism and
15181 has a larger code and data size. Note that these values will vary
15182 depending on the efficiency of the compiler and the compiler
15183 options used during generation.
15186 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15187 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15189 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
15190 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
15195 Initialize thermal driver's timer before it is used. (Knut
15198 Allow handling negative celsius values. (Kochi Takayoshi)
15200 Fix thermal management and make trip points. R/W (Pavel Machek)
15202 Fix /proc/acpi/sleep. (P. Christeas)
15204 IA64 fixes. (David Mosberger)
15206 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
15208 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
15212 3) iASL Compiler/Disassembler
15214 Clarified some warning/error messages.
15217 ----------------------------------------
15218 18 September 2002. Summary of changes for this release.
15221 1) ACPI CA Core Subsystem version 20020918:
15223 Fixed a reported problem with reference chaining (via the Index()
15224 and RefOf() operators) in the ObjectType() and SizeOf() operators.
15225 The definition of these operators includes the dereferencing of
15226 all chained references to return information on the base object.
15228 Fixed a problem with stores to indexed package elements - the
15229 existing code would not complete the store if an "implicit
15230 conversion" was not performed. In other words, if the existing
15231 object (package element) was to be replaced completely, the code
15232 didn't handle this case.
15234 Relaxed typechecking on the ASL "Scope" operator to allow the
15235 target name to refer to an object of type Integer, String, or
15236 Buffer, in addition to the scoping object types (Device,
15237 predefined Scopes, Processor, PowerResource, and ThermalZone.)
15238 This allows existing AML code that has workarounds for a bug in
15239 Windows to function properly. A warning is issued, however. This
15240 affects both the AML interpreter and the iASL compiler. Below is
15241 an example of this type of ASL code:
15247 Fixed some reported problems with 64-bit integer support in the
15248 local implementation of C library functions (clib.c)
15253 Use ACPI fix map region instead of IOAPIC region, since it is
15254 undefined in non-SMP.
15256 Ensure that the SCI has the proper polarity and trigger, even on
15257 systems that do not have an interrupt override entry in the MADT.
15259 2.5 big driver reorganization (Pat Mochel)
15261 Use early table mapping code from acpitable.c (Andi Kleen)
15263 New blacklist entries (Andi Kleen)
15265 Blacklist improvements. Split blacklist code out into a separate
15266 file. Move checking the blacklist to very early. Previously, we
15267 would use ACPI tables, and then halfway through init, check the
15268 blacklist -- too late. Now, it's early enough to completely fall-
15272 3) iASL Compiler/Disassembler version 20020918:
15274 Fixed a problem where the typechecking code didn't know that an
15275 alias could point to a method. In other words, aliases were not
15276 being dereferenced during typechecking.
15279 ----------------------------------------
15280 29 August 2002. Summary of changes for this release.
15282 1) ACPI CA Core Subsystem Version 20020829:
15284 If the target of a Scope() operator already exists, it must be an
15285 object type that actually opens a scope -- such as a Device,
15286 Method, Scope, etc. This is a fatal runtime error. Similar error
15287 check has been added to the iASL compiler also.
15289 Tightened up the namespace load to disallow multiple names in the
15290 same scope. This previously was allowed if both objects were of
15291 the same type. (i.e., a lookup was the same as entering a new
15297 Ensure that the ACPI interrupt has the proper trigger and
15300 local_irq_disable is extraneous. (Matthew Wilcox)
15302 Make "acpi=off" actually do what it says, and not use the ACPI
15303 interpreter *or* the tables.
15305 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
15309 3) iASL Compiler/Disassembler Version 20020829:
15311 Implemented namepath optimization for name declarations. For
15312 example, a declaration like "Method (\_SB_.ABCD)" would get
15313 optimized to "Method (ABCD)" if the declaration is within the
15314 \_SB_ scope. This optimization is in addition to the named
15315 reference path optimization first released in the previous
15316 version. This would seem to complete all possible optimizations
15317 for namepaths within the ASL/AML.
15319 If the target of a Scope() operator already exists, it must be an
15320 object type that actually opens a scope -- such as a Device,
15321 Method, Scope, etc.
15323 Implemented a check and warning for unreachable code in the same
15324 block below a Return() statement.
15326 Fixed a problem where the listing file was not generated if the
15327 compiler aborted if the maximum error count was exceeded (200).
15329 Fixed a problem where the typechecking of method return values was
15330 broken. This includes the check for a return value when the
15331 method is invoked as a TermArg (a return value is expected.)
15333 Fixed a reported problem where EOF conditions during a quoted
15334 string or comment caused a fault.
15337 ----------------------------------------
15338 15 August 2002. Summary of changes for this release.
15340 1) ACPI CA Core Subsystem Version 20020815:
15342 Fixed a reported problem where a Store to a method argument that
15343 contains a reference did not perform the indirect store correctly.
15344 This problem was created during the conversion to the new
15345 reference object model - the indirect store to a method argument
15346 code was not updated to reflect the new model.
15348 Reworked the ACPI mode change code to better conform to ACPI 2.0,
15349 handle corner cases, and improve code legibility (Kochi Takayoshi)
15351 Fixed a problem with the pathname parsing for the carat (^)
15352 prefix. The heavy use of the carat operator by the new namepath
15353 optimization in the iASL compiler uncovered a problem with the AML
15354 interpreter handling of this prefix. In the case where one or
15355 more carats precede a single nameseg, the nameseg was treated as
15356 standalone and the search rule (to root) was inadvertently
15357 applied. This could cause both the iASL compiler and the
15358 interpreter to find the wrong object or to miss the error that
15359 should occur if the object does not exist at that exact pathname.
15361 Found and fixed the problem where the HP Pavilion DSDT would not
15362 load. This was a relatively minor tweak to the table loading code
15363 (a problem caused by the unexpected encounter with a method
15364 invocation not within a control method), but it does not solve the
15365 overall issue of the execution of AML code at the table level.
15366 This investigation is still ongoing.
15368 Code and Data Size: Current core subsystem library sizes are shown
15369 below. These are the code and data sizes for the acpica.lib
15370 produced by the Microsoft Visual C++ 6.0 compiler, and these
15371 values do not include any ACPI driver or OSPM code. The debug
15372 version of the code includes the debug output trace mechanism and
15373 has a larger code and data size. Note that these values will vary
15374 depending on the efficiency of the compiler and the compiler
15375 options used during generation.
15378 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15379 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15381 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15382 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15387 Remove redundant slab.h include (Brad Hards)
15389 Fix several bugs in thermal.c (Herbert Nachtnebel)
15391 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
15393 Change acpi_system_suspend to use updated irq functions (Pavel
15396 Export acpi_get_firmware_table (Matthew Wilcox)
15398 Use proper root proc entry for ACPI (Kochi Takayoshi)
15400 Fix early-boot table parsing (Bjorn Helgaas)
15403 3) iASL Compiler/Disassembler
15405 Reworked the compiler options to make them more consistent and to
15406 use two-letter options where appropriate. We were running out of
15407 sensible letters. This may break some makefiles, so check the
15408 current options list by invoking the compiler with no parameters.
15410 Completed the design and implementation of the ASL namepath
15411 optimization option for the compiler. This option optimizes all
15412 references to named objects to the shortest possible path. The
15413 first attempt tries to utilize a single nameseg (4 characters) and
15414 the "search-to-root" algorithm used by the interpreter. If that
15415 cannot be used (because either the name is not in the search path
15416 or there is a conflict with another object with the same name),
15417 the pathname is optimized using the carat prefix (usually a
15418 shorter string than specifying the entire path from the root.)
15420 Implemented support to obtain the DSDT from the Windows registry
15421 (when the disassembly option is specified with no input file).
15422 Added this code as the implementation for AcpiOsTableOverride in
15423 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
15424 utility) to scan memory for the DSDT to the AcpiOsTableOverride
15425 function in the DOS OSL to make the disassembler truly OS
15428 Implemented a new option to disassemble and compile in one step.
15429 When used without an input filename, this option will grab the
15430 DSDT from the local machine, disassemble it, and compile it in one
15433 Added a warning message for invalid escapes (a backslash followed
15434 by any character other than the allowable escapes). This catches
15435 the quoted string error "\_SB_" (which should be "\\_SB_" ).
15437 Also, there are numerous instances in the ACPI specification where
15440 Added a compiler option to disable all optimizations. This is
15441 basically the "compatibility mode" because by using this option,
15442 the AML code will come out exactly the same as other ASL
15445 Added error messages for incorrectly ordered dependent resource
15446 functions. This includes: missing EndDependentFn macro at end of
15447 dependent resource list, nested dependent function macros (both
15448 start and end), and missing StartDependentFn macro. These are
15449 common errors that should be caught at compile time.
15451 Implemented _OSI support for the disassembler and compiler. _OSI
15452 must be included in the namespace for proper disassembly (because
15453 the disassembler must know the number of arguments.)
15455 Added an "optimization" message type that is optional (off by
15456 default). This message is used for all optimizations - including
15457 constant folding, integer optimization, and namepath optimization.
15459 ----------------------------------------
15460 25 July 2002. Summary of changes for this release.
15463 1) ACPI CA Core Subsystem Version 20020725:
15465 The AML Disassembler has been enhanced to produce compilable ASL
15466 code and has been integrated into the iASL compiler (see below) as
15467 well as the single-step disassembly for the AML debugger and the
15468 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
15469 resource templates and macros are fully supported. The
15470 disassembler has been tested on over 30 different AML files,
15471 producing identical AML when the resulting disassembled ASL file
15472 is recompiled with the same ASL compiler.
15474 Modified the Resource Manager to allow zero interrupts and zero
15475 dma channels during the GetCurrentResources call. This was
15476 causing problems on some platforms.
15478 Added the AcpiOsRedirectOutput interface to the OSL to simplify
15479 output redirection for the AcpiOsPrintf and AcpiOsVprintf
15482 Code and Data Size: Current core subsystem library sizes are shown
15483 below. These are the code and data sizes for the acpica.lib
15484 produced by the Microsoft Visual C++ 6.0 compiler, and these
15485 values do not include any ACPI driver or OSPM code. The debug
15486 version of the code includes the debug output trace mechanism and
15487 has a larger code and data size. Note that these values will vary
15488 depending on the efficiency of the compiler and the compiler
15489 options used during generation.
15492 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15493 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15495 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15496 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15501 Fixed a panic in the EC driver (Dominik Brodowski)
15503 Implemented checksum of the R/XSDT itself during Linux table scan
15509 The AML disassembler is integrated into the compiler. The "-d"
15510 option invokes the disassembler to completely disassemble an
15511 input AML file, producing as output a text ASL file with the
15512 extension ".dsl" (to avoid name collisions with existing .asl
15513 source files.) A future enhancement will allow the disassembler
15514 to obtain the BIOS DSDT from the registry under Windows.
15516 Fixed a problem with the VendorShort and VendorLong resource
15517 descriptors where an invalid AML sequence was created.
15519 Implemented a fix for BufferData term in the ASL parser. It was
15520 inadvertently defined twice, allowing invalid syntax to pass and
15521 causing reduction conflicts.
15523 Fixed a problem where the Ones opcode could get converted to a
15524 value of zero if "Ones" was used where a byte, word or dword value
15525 was expected. The 64-bit value is now truncated to the correct
15526 size with the correct value.
15530 ----------------------------------------
15531 02 July 2002. Summary of changes for this release.
15534 1) ACPI CA Core Subsystem Version 20020702:
15536 The Table Manager code has been restructured to add several new
15537 features. Tables that are not required by the core subsystem
15538 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
15539 validated in any way and are returned from AcpiGetFirmwareTable if
15540 requested. The AcpiOsTableOverride interface is now called for
15541 each table that is loaded by the subsystem in order to allow the
15542 host to override any table it chooses. Previously, only the DSDT
15543 could be overridden. Added one new files, tbrsdt.c and
15546 Fixed a problem with the conversion of internal package objects to
15547 external objects (when a package is returned from a control
15548 method.) The return buffer length was set to zero instead of the
15549 proper length of the package object.
15551 Fixed a reported problem with the use of the RefOf and DeRefOf
15552 operators when passing reference arguments to control methods. A
15553 new type of Reference object is used internally for references
15554 produced by the RefOf operator.
15556 Added additional error messages in the Resource Manager to explain
15557 AE_BAD_DATA errors when they occur during resource parsing.
15559 Split the AcpiEnableSubsystem into two primitives to enable a
15560 finer granularity initialization sequence. These two calls should
15561 be called in this order: AcpiEnableSubsystem (flags),
15562 AcpiInitializeObjects (flags). The flags parameter remains the
15568 Updated the ACPI utilities module to understand the new style of
15569 fully resolved package objects that are now returned from the core
15570 subsystem. This eliminates errors of the form:
15572 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
15573 acpi_utils-0430 [145] acpi_evaluate_reference:
15574 Invalid element in package (not a device reference)
15576 The method evaluation utility uses the new buffer allocation
15577 scheme instead of calling AcpiEvaluate Object twice.
15579 Added support for ECDT. This allows the use of the Embedded
15581 Controller before the namespace has been fully initialized, which
15582 is necessary for ACPI 2.0 support, and for some laptops to
15583 initialize properly. (Laptops using ECDT are still rare, so only
15584 limited testing was performed of the added functionality.)
15586 Fixed memory leaks in the EC driver.
15588 Eliminated a brittle code structure in acpi_bus_init().
15590 Eliminated the acpi_evaluate() helper function in utils.c. It is
15591 no longer needed since acpi_evaluate_object can optionally
15592 allocate memory for the return object.
15594 Implemented fix for keyboard hang when getting battery readings on
15595 some systems (Stephen White)
15597 PCI IRQ routing update (Dominik Brodowski)
15599 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15602 ----------------------------------------
15603 11 June 2002. Summary of changes for this release.
15606 1) ACPI CA Core Subsystem Version 20020611:
15608 Fixed a reported problem where constants such as Zero and One
15609 appearing within _PRT packages were not handled correctly within
15610 the resource manager code. Originally reported against the ASL
15611 compiler because the code generator now optimizes integers to
15612 their minimal AML representation (i.e. AML constants if possible.)
15613 The _PRT code now handles all AML constant opcodes correctly
15614 (Zero, One, Ones, Revision).
15616 Fixed a problem with the Concatenate operator in the AML
15617 interpreter where a buffer result object was incorrectly marked as
15618 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15620 All package sub-objects are now fully resolved before they are
15621 returned from the external ACPI interfaces. This means that name
15622 strings are resolved to object handles, and constant operators
15623 (Zero, One, Ones, Revision) are resolved to Integers.
15625 Implemented immediate resolution of the AML Constant opcodes
15626 (Zero, One, Ones, Revision) to Integer objects upon detection
15627 within the AML stream. This has simplified and reduced the
15628 generated code size of the subsystem by eliminating about 10
15629 switch statements for these constants (which previously were
15630 contained in Reference objects.) The complicating issues are that
15631 the Zero opcode is used as a "placeholder" for unspecified
15632 optional target operands and stores to constants are defined to be
15635 Code and Data Size: Current core subsystem library sizes are shown
15636 below. These are the code and data sizes for the acpica.lib
15637 produced by the Microsoft Visual C++ 6.0 compiler, and these
15638 values do not include any ACPI driver or OSPM code. The debug
15639 version of the code includes the debug output trace mechanism and
15640 has a larger code and data size. Note that these values will vary
15641 depending on the efficiency of the compiler and the compiler
15642 options used during generation.
15645 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15646 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15648 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15649 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15655 Added preliminary support for obtaining _TRA data for PCI root
15656 bridges (Bjorn Helgaas).
15659 3) iASL Compiler Version X2046:
15661 Fixed a problem where the "_DDN" reserved name was defined to be a
15662 control method with one argument. There are no arguments, and
15663 _DDN does not have to be a control method.
15665 Fixed a problem with the Linux version of the compiler where the
15666 source lines printed with error messages were the wrong lines.
15667 This turned out to be the "LF versus CR/LF" difference between
15668 Windows and Unix. This appears to be the longstanding issue
15669 concerning listing output and error messages.
15671 Fixed a problem with the Linux version of compiler where opcode
15672 names within error messages were wrong. This was caused by a
15673 slight difference in the output of the Flex tool on Linux versus
15676 Fixed a problem with the Linux compiler where the hex output files
15677 contained some garbage data caused by an internal buffer overrun.
15680 ----------------------------------------
15681 17 May 2002. Summary of changes for this release.
15684 1) ACPI CA Core Subsystem Version 20020517:
15686 Implemented a workaround to an BIOS bug discovered on the HP
15687 OmniBook where the FADT revision number and the table size are
15688 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15689 behavior is to fallback to using only the ACPI 1.0 fields of the
15690 FADT if the table is too small to be a ACPI 2.0 table as claimed
15691 by the revision number. Although this is a BIOS bug, this is a
15692 case where the workaround is simple enough and with no side
15693 effects, so it seemed prudent to add it. A warning message is
15696 Implemented minimum size checks for the fixed-length ACPI tables -
15697 - the FADT and FACS, as well as consistency checks between the
15698 revision number and the table size.
15700 Fixed a reported problem in the table override support where the
15701 new table pointer was incorrectly treated as a physical address
15702 instead of a logical address.
15704 Eliminated the use of the AE_AML_ERROR exception and replaced it
15705 with more descriptive codes.
15707 Fixed a problem where an exception would occur if an ASL Field was
15708 defined with no named Field Units underneath it (used by some
15711 Code and Data Size: Current core subsystem library sizes are shown
15712 below. These are the code and data sizes for the acpica.lib
15713 produced by the Microsoft Visual C++ 6.0 compiler, and these
15714 values do not include any ACPI driver or OSPM code. The debug
15715 version of the code includes the debug output trace mechanism and
15716 has a larger code and data size. Note that these values will vary
15717 depending on the efficiency of the compiler and the compiler
15718 options used during generation.
15721 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15722 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15724 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15725 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15731 Much work done on ACPI init (MADT and PCI IRQ routing support).
15732 (Paul D. and Dominik Brodowski)
15734 Fix PCI IRQ-related panic on boot (Sam Revitch)
15736 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15738 Fix "MHz" typo (Dominik Brodowski)
15740 Fix RTC year 2000 issue (Dominik Brodowski)
15742 Preclude multiple button proc entries (Eric Brunet)
15744 Moved arch-specific code out of include/platform/aclinux.h
15746 3) iASL Compiler Version X2044:
15748 Implemented error checking for the string used in the EISAID macro
15749 (Usually used in the definition of the _HID object.) The code now
15750 strictly enforces the PnP format - exactly 7 characters, 3
15751 uppercase letters and 4 hex digits.
15753 If a raw string is used in the definition of the _HID object
15754 (instead of the EISAID macro), the string must contain all
15755 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15758 Implemented checking for invalid use of ACPI reserved names for
15759 most of the name creation operators (Name, Device, Event, Mutex,
15760 OperationRegion, PowerResource, Processor, and ThermalZone.)
15761 Previously, this check was only performed for control methods.
15763 Implemented an additional check on the Name operator to emit an
15764 error if a reserved name that must be implemented in ASL as a
15765 control method is used. We know that a reserved name must be a
15766 method if it is defined with input arguments.
15768 The warning emitted when a namespace object reference is not found
15769 during the cross reference phase has been changed into an error.
15770 The "External" directive should be used for names defined in other
15774 4) Tools and Utilities
15776 The 16-bit tools (adump16 and aexec16) have been regenerated and
15779 Fixed a problem with the output of both acpidump and adump16 where
15780 the indentation of closing parentheses and brackets was not
15782 aligned properly with the parent block.
15785 ----------------------------------------
15786 03 May 2002. Summary of changes for this release.
15789 1) ACPI CA Core Subsystem Version 20020503:
15791 Added support a new OSL interface that allows the host operating
15793 system software to override the DSDT found in the firmware -
15794 AcpiOsTableOverride. With this interface, the OSL can examine the
15795 version of the firmware DSDT and replace it with a different one
15798 Added new external interfaces for accessing ACPI registers from
15799 device drivers and other system software - AcpiGetRegister and
15800 AcpiSetRegister. This was simply an externalization of the
15801 existing AcpiHwBitRegister interfaces.
15803 Fixed a regression introduced in the previous build where the
15804 ASL/AML CreateField operator always returned an error,
15805 "destination must be a NS Node".
15807 Extended the maximum time (before failure) to successfully enable
15808 ACPI mode to 3 seconds.
15810 Code and Data Size: Current core subsystem library sizes are shown
15811 below. These are the code and data sizes for the acpica.lib
15812 produced by the Microsoft Visual C++ 6.0 compiler, and these
15813 values do not include any ACPI driver or OSPM code. The debug
15814 version of the code includes the debug output trace mechanism and
15815 has a larger code and data size. Note that these values will vary
15816 depending on the efficiency of the compiler and the compiler
15817 options used during generation.
15820 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15821 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15823 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15824 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15829 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15830 free. While 3 out of 4 of our in-house systems work fine, the last
15831 one still hangs when testing the LAPIC timer.
15833 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15836 Added warning on boot for Presario 711FR.
15838 Sleep improvements (Pavel Machek)
15840 ACPI can now be built without CONFIG_PCI enabled.
15842 IA64: Fixed memory map functions (JI Lee)
15845 3) iASL Compiler Version X2043:
15847 Added support to allow the compiler to be integrated into the MS
15848 VC++ development environment for one-button compilation of single
15849 files or entire projects -- with error-to-source-line mapping.
15851 Implemented support for compile-time constant folding for the
15852 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15853 specification. This allows the ASL writer to use expressions
15854 instead of Integer/Buffer/String constants in terms that must
15855 evaluate to constants at compile time and will also simplify the
15856 emitted AML in any such sub-expressions that can be folded
15857 (evaluated at compile-time.) This increases the size of the
15858 compiler significantly because a portion of the ACPI CA AML
15859 interpreter is included within the compiler in order to pre-
15860 evaluate constant expressions.
15863 Fixed a problem with the "Unicode" ASL macro that caused the
15864 compiler to fault. (This macro is used in conjunction with the
15865 _STR reserved name.)
15867 Implemented an AML opcode optimization to use the Zero, One, and
15868 Ones opcodes where possible to further reduce the size of integer
15869 constants and thus reduce the overall size of the generated AML
15872 Implemented error checking for new reserved terms for ACPI version
15875 Implemented the -qr option to display the current list of ACPI
15876 reserved names known to the compiler.
15878 Implemented the -qc option to display the current list of ASL
15879 operators that are allowed within constant expressions and can
15880 therefore be folded at compile time if the operands are constants.
15885 Updated the Programmer's Reference for new interfaces, data types,
15886 and memory allocation model options.
15888 Updated the iASL Compiler User Reference to apply new format and
15889 add information about new features and options.
15891 ----------------------------------------
15892 19 April 2002. Summary of changes for this release.
15894 1) ACPI CA Core Subsystem Version 20020419:
15896 The source code base for the Core Subsystem has been completely
15897 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15898 versions. The Lint option files used are included in the
15899 /acpi/generate/lint directory.
15901 Implemented enhanced status/error checking across the entire
15902 Hardware manager subsystem. Any hardware errors (reported from
15903 the OSL) are now bubbled up and will abort a running control
15907 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15908 was stored only with control method nodes, causing a fault when
15909 non-control method code was executed during table loading. The
15910 solution implemented uses a global variable to indicate table
15911 width across the entire ACPI subsystem. Therefore, ACPI CA does
15912 not support mixed integer widths across different ACPI tables
15915 Fixed a problem where NULL extended fields (X fields) in an ACPI
15916 2.0 ACPI FADT caused the table load to fail. Although the
15917 existing ACPI specification is a bit fuzzy on this topic, the new
15918 behavior is to fall back on a ACPI 1.0 field if the corresponding
15919 ACPI 2.0 X field is zero (even though the table revision indicates
15920 a full ACPI 2.0 table.) The ACPI specification will be updated to
15921 clarify this issue.
15923 Fixed a problem with the SystemMemory operation region handler
15924 where memory was always accessed byte-wise even if the AML-
15925 specified access width was larger than a byte. This caused
15926 problems on systems with memory-mapped I/O. Memory is now
15927 accessed with the width specified. On systems that do not support
15928 non-aligned transfers, a check is made to guarantee proper address
15929 alignment before proceeding in order to avoid an AML-caused
15930 alignment fault within the kernel.
15933 Fixed a problem with the ExtendedIrq resource where only one byte
15934 of the 4-byte Irq field was extracted.
15936 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15937 function was out of date and required a rewrite.
15939 Code and Data Size: Current core subsystem library sizes are shown
15940 below. These are the code and data sizes for the acpica.lib
15941 produced by the Microsoft Visual C++ 6.0 compiler, and these
15942 values do not include any ACPI driver or OSPM code. The debug
15943 version of the code includes the debug output trace mechanism and
15944 has a larger code and data size. Note that these values will vary
15945 depending on the efficiency of the compiler and the compiler
15946 options used during generation.
15949 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15950 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15952 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15953 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15958 PCI IRQ routing fixes (Dominik Brodowski)
15961 3) iASL Compiler Version X2042:
15963 Implemented an additional compile-time error check for a field
15964 unit whose size + minimum access width would cause a run-time
15965 access beyond the end-of-region. Previously, only the field size
15966 itself was checked.
15968 The Core subsystem and iASL compiler now share a common parse
15969 object in preparation for compile-time evaluation of the type
15970 3/4/5 ASL operators.
15973 ----------------------------------------
15974 Summary of changes for this release: 03_29_02
15976 1) ACPI CA Core Subsystem Version 20020329:
15978 Implemented support for late evaluation of TermArg operands to
15979 Buffer and Package objects. This allows complex expressions to be
15980 used in the declarations of these object types.
15982 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15983 1.0, if the field was larger than 32 bits, it was returned as a
15984 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15985 the field is returned as a buffer only if the field is larger than
15986 64 bits. The TableRevision is now considered when making this
15987 conversion to avoid incompatibility with existing ASL code.
15989 Implemented logical addressing for AcpiOsGetRootPointer. This
15990 allows an RSDP with either a logical or physical address. With
15991 this support, the host OS can now override all ACPI tables with
15992 one logical RSDP. Includes implementation of "typed" pointer
15993 support to allow a common data type for both physical and logical
15994 pointers internally. This required a change to the
15995 AcpiOsGetRootPointer interface.
15997 Implemented the use of ACPI 2.0 Generic Address Structures for all
15998 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15999 mapped I/O for these ACPI features.
16001 Initialization now ignores not only non-required tables (All
16002 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
16003 not validate the table headers of unrecognized tables.
16005 Fixed a problem where a notify handler could only be
16006 installed/removed on an object of type Device. All "notify"
16008 objects are now supported -- Devices, Processor, Power, and
16011 Removed most verbosity from the ACPI_DB_INFO debug level. Only
16012 critical information is returned when this debug level is enabled.
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: 65.4K Code, 6.2K Data, 71.6K Total
16025 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
16027 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
16028 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
16033 The processor driver (acpi_processor.c) now fully supports ACPI
16034 2.0-based processor performance control (e.g. Intel(R)
16035 SpeedStep(TM) technology) Note that older laptops that only have
16036 the Intel "applet" interface are not supported through this. The
16037 'limit' and 'performance' interface (/proc) are fully functional.
16038 [Note that basic policy for controlling performance state
16039 transitions will be included in the next version of ospmd.] The
16040 idle handler was modified to more aggressively use C2, and PIIX4
16041 errata handling underwent a complete overhaul (big thanks to
16042 Dominik Brodowski).
16044 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
16045 based devices in the ACPI namespace are now dynamically bound
16046 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
16047 This allows, among other things, ACPI to resolve bus numbers for
16048 subordinate PCI bridges.
16050 Enhanced PCI IRQ routing to get the proper bus number for _PRT
16051 entries defined underneath PCI bridges.
16053 Added IBM 600E to bad bios list due to invalid _ADR value for
16054 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
16056 In the process of adding full MADT support (e.g. IOAPIC) for IA32
16057 (acpi.c, mpparse.c) -- stay tuned.
16059 Added back visual differentiation between fixed-feature and
16060 control-method buttons in dmesg. Buttons are also subtyped (e.g.
16061 button/power/PWRF) to simplify button identification.
16063 We no longer use -Wno-unused when compiling debug. Please ignore
16064 any "_THIS_MODULE defined but not used" messages.
16066 Can now shut down the system using "magic sysrq" key.
16069 3) iASL Compiler version 2041:
16071 Fixed a problem where conversion errors for hex/octal/decimal
16072 constants were not reported.
16074 Implemented a fix for the General Register template Address field.
16075 This field was 8 bits when it should be 64.
16077 Fixed a problem where errors/warnings were no longer being emitted
16078 within the listing output file.
16080 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
16081 exactly 4 characters, alphanumeric only.
16086 ----------------------------------------
16087 Summary of changes for this release: 03_08_02
16090 1) ACPI CA Core Subsystem Version 20020308:
16092 Fixed a problem with AML Fields where the use of the "AccessAny"
16093 keyword could cause an interpreter error due to attempting to read
16094 or write beyond the end of the parent Operation Region.
16096 Fixed a problem in the SystemMemory Operation Region handler where
16097 an attempt was made to map memory beyond the end of the region.
16098 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
16099 errors on some Linux systems.
16101 Fixed a problem where the interpreter/namespace "search to root"
16102 algorithm was not functioning for some object types. Relaxed the
16103 internal restriction on the search to allow upsearches for all
16104 external object types as well as most internal types.
16109 We now use safe_halt() macro versus individual calls to sti | hlt.
16111 Writing to the processor limit interface should now work. "echo 1"
16112 will increase the limit, 2 will decrease, and 0 will reset to the
16119 Fixed segfault on Linux version.
16122 ----------------------------------------
16123 Summary of changes for this release: 02_25_02
16125 1) ACPI CA Core Subsystem:
16128 Fixed a problem where the GPE bit masks were not initialized
16129 properly, causing erratic GPE behavior.
16131 Implemented limited support for multiple calling conventions. The
16132 code can be generated with either the VPL (variable parameter
16133 list, or "C") convention, or the FPL (fixed parameter list, or
16134 "Pascal") convention. The core subsystem is about 3.4% smaller
16135 when generated with FPL.
16140 Re-add some /proc/acpi/event functionality that was lost during
16143 Resolved issue with /proc events for fixed-feature buttons showing
16144 up as the system device.
16146 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
16148 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
16150 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
16152 Fixed limit interface & usage to fix bugs with passive cooling
16155 Restructured PRT support.
16158 ----------------------------------------
16159 Summary of changes for this label: 02_14_02
16162 1) ACPI CA Core Subsystem:
16164 Implemented support in AcpiLoadTable to allow loading of FACS and
16167 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
16168 been removed. All 64-bit platforms should be migrated to the ACPI
16169 2.0 tables. The actbl71.h header has been removed from the source
16172 All C macros defined within the subsystem have been prefixed with
16173 "ACPI_" to avoid collision with other system include files.
16175 Removed the return value for the two AcpiOsPrint interfaces, since
16176 it is never used and causes lint warnings for ignoring the return
16179 Added error checking to all internal mutex acquire and release
16180 calls. Although a failure from one of these interfaces is
16181 probably a fatal system error, these checks will cause the
16182 immediate abort of the currently executing method or interface.
16184 Fixed a problem where the AcpiSetCurrentResources interface could
16185 fault. This was a side effect of the deployment of the new memory
16188 Fixed a couple of problems with the Global Lock support introduced
16189 in the last major build. The "common" (1.0/2.0) internal FACS was
16190 being overwritten with the FACS signature and clobbering the
16191 Global Lock pointer. Also, the actual firmware FACS was being
16192 unmapped after construction of the "common" FACS, preventing
16193 access to the actual Global Lock field within it. The "common"
16194 internal FACS is no longer installed as an actual ACPI table; it
16195 is used simply as a global.
16197 Code and Data Size: Current core subsystem library sizes are shown
16198 below. These are the code and data sizes for the acpica.lib
16199 produced by the Microsoft Visual C++ 6.0 compiler, and these
16200 values do not include any ACPI driver or OSPM code. The debug
16201 version of the code includes the debug output trace mechanism and
16202 has a larger code and data size. Note that these values will vary
16203 depending on the efficiency of the compiler and the compiler
16204 options used during generation.
16206 Previous Release (02_07_01)
16207 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16208 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16210 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
16211 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
16216 Updated Linux-specific code for core macro and OSL interface
16217 changes described above.
16219 Improved /proc/acpi/event. It now can be opened only once and has
16220 proper poll functionality.
16222 Fixed and restructured power management (acpi_bus).
16224 Only create /proc "view by type" when devices of that class exist.
16226 Fixed "charging/discharging" bug (and others) in acpi_battery.
16228 Improved thermal zone code.
16231 3) ASL Compiler, version X2039:
16234 Implemented the new compiler restriction on ASL String hex/octal
16235 escapes to non-null, ASCII values. An error results if an invalid
16236 value is used. (This will require an ACPI 2.0 specification
16239 AML object labels that are output to the optional C and ASM source
16240 are now prefixed with both the ACPI table signature and table ID
16241 to help guarantee uniqueness within a large BIOS project.
16244 ----------------------------------------
16245 Summary of changes for this label: 02_01_02
16247 1) ACPI CA Core Subsystem:
16249 ACPI 2.0 support is complete in the entire Core Subsystem and the
16250 ASL compiler. All new ACPI 2.0 operators are implemented and all
16251 other changes for ACPI 2.0 support are complete. With
16252 simultaneous code and data optimizations throughout the subsystem,
16253 ACPI 2.0 support has been implemented with almost no additional
16254 cost in terms of code and data size.
16256 Implemented a new mechanism for allocation of return buffers. If
16257 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
16258 be allocated on behalf of the caller. Consolidated all return
16259 buffer validation and allocation to a common procedure. Return
16260 buffers will be allocated via the primary OSL allocation interface
16261 since it appears that a separate pool is not needed by most users.
16262 If a separate pool is required for these buffers, the caller can
16263 still use the original mechanism and pre-allocate the buffer(s).
16265 Implemented support for string operands within the DerefOf
16268 Restructured the Hardware and Event managers to be table driven,
16269 simplifying the source code and reducing the amount of generated
16272 Split the common read/write low-level ACPI register bitfield
16273 procedure into a separate read and write, simplifying the code
16276 Obsoleted the AcpiOsCallocate OSL interface. This interface was
16277 used only a handful of times and didn't have enough critical mass
16278 for a separate interface. Replaced with a common calloc procedure
16281 Fixed a reported problem with the GPE number mapping mechanism
16282 that allows GPE1 numbers to be non-contiguous with GPE0.
16283 Reorganized the GPE information and shrunk a large array that was
16284 originally large enough to hold info for all possible GPEs (256)
16285 to simply large enough to hold all GPEs up to the largest GPE
16286 number on the machine.
16288 Fixed a reported problem with resource structure alignment on 64-
16291 Changed the AcpiEnableEvent and AcpiDisableEvent external
16292 interfaces to not require any flags for the common case of
16293 enabling/disabling a GPE.
16295 Implemented support to allow a "Notify" on a Processor object.
16297 Most TBDs in comments within the source code have been resolved
16301 Fixed a problem in the interpreter where a standalone parent
16302 prefix (^) was not handled correctly in the interpreter and
16305 Removed obsolete and unnecessary GPE save/restore code.
16307 Implemented Field support in the ASL Load operator. This allows a
16308 table to be loaded from a named field, in addition to loading a
16309 table directly from an Operation Region.
16311 Implemented timeout and handle support in the external Global Lock
16314 Fixed a problem in the AcpiDump utility where pathnames were no
16315 longer being generated correctly during the dump of named objects.
16317 Modified the AML debugger to give a full display of if/while
16318 predicates instead of just one AML opcode at a time. (The
16319 predicate can have several nested ASL statements.) The old method
16320 was confusing during single stepping.
16322 Code and Data Size: Current core subsystem library sizes are shown
16323 below. These are the code and data sizes for the acpica.lib
16324 produced by the Microsoft Visual C++ 6.0 compiler, and these
16325 values do not include any ACPI driver or OSPM code. The debug
16326 version of the code includes the debug output trace mechanism and
16327 has a larger code and data size. Note that these values will vary
16328 depending on the efficiency of the compiler and the compiler
16329 options used during generation.
16331 Previous Release (12_18_01)
16332 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16333 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16335 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16336 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16340 Implemented fix for PIIX reverse throttling errata (Processor
16343 Added new Limit interface (Processor and Thermal drivers)
16345 New thermal policy (Thermal driver)
16347 Many updates to /proc
16349 Battery "low" event support (Battery driver)
16351 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
16353 IA32 - IA64 initialization unification, no longer experimental
16355 Menuconfig options redesigned
16357 3) ASL Compiler, version X2037:
16359 Implemented several new output features to simplify integration of
16360 AML code into firmware: 1) Output the AML in C source code with
16361 labels for each named ASL object. The original ASL source code
16362 is interleaved as C comments. 2) Output the AML in ASM source code
16363 with labels and interleaved ASL source. 3) Output the AML in
16364 raw hex table form, in either C or ASM.
16366 Implemented support for optional string parameters to the
16367 LoadTable operator.
16369 Completed support for embedded escape sequences within string
16370 literals. The compiler now supports all single character escapes
16371 as well as the Octal and Hex escapes. Note: the insertion of a
16372 null byte into a string literal (via the hex/octal escape) causes
16373 the string to be immediately terminated. A warning is issued.
16375 Fixed a problem where incorrect AML was generated for the case
16376 where an ASL namepath consists of a single parent prefix (
16378 ) with no trailing name segments.
16380 The compiler has been successfully generated with a 64-bit C
16386 ----------------------------------------
16387 Summary of changes for this label: 12_18_01
16391 Enhanced blacklist with reason and severity fields. Any table's
16392 signature may now be used to identify a blacklisted system.
16394 Call _PIC control method to inform the firmware which interrupt
16395 model the OS is using. Turn on any disabled link devices.
16397 Cleaned up busmgr /proc error handling (Andreas Dilger)
16399 2) ACPI CA Core Subsystem:
16401 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
16404 Completed implementation of the ACPI 2.0 "Continue",
16405 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
16406 operators. All new ACPI 2.0 operators are now implemented in both
16407 the ASL compiler and the AML interpreter. The only remaining ACPI
16408 2.0 task is support for the String data type in the DerefOf
16409 operator. Fixed a problem with AcquireMutex where the status code
16410 was lost if the caller had to actually wait for the mutex.
16412 Increased the maximum ASL Field size from 64K bits to 4G bits.
16414 Completed implementation of the external Global Lock interfaces --
16415 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
16416 Handler parameters were added.
16418 Completed another pass at removing warnings and issues when
16419 compiling with 64-bit compilers. The code now compiles cleanly
16420 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
16421 add and subtract (diff) macros have changed considerably.
16424 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
16425 64-bit platforms, 32-bits on all others. This type is used
16426 wherever memory allocation and/or the C sizeof() operator is used,
16427 and affects the OSL memory allocation interfaces AcpiOsAllocate
16428 and AcpiOsCallocate.
16430 Implemented sticky user breakpoints in the AML debugger.
16432 Code and Data Size: Current core subsystem library sizes are shown
16433 below. These are the code and data sizes for the acpica.lib
16434 produced by the Microsoft Visual C++ 6.0 compiler, and these
16435 values do not include any ACPI driver or OSPM code. The debug
16436 version of the code includes the debug output trace mechanism and
16437 has a larger code and data size. Note that these values will vary
16438 depending on the efficiency of the compiler and the compiler
16439 options used during generation.
16441 Previous Release (12_05_01)
16442 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16443 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16445 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16446 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16448 3) ASL Compiler, version X2034:
16450 Now checks for (and generates an error if detected) the use of a
16451 Break or Continue statement without an enclosing While statement.
16454 Successfully generated the compiler with the Intel 64-bit C
16457 ----------------------------------------
16458 Summary of changes for this label: 12_05_01
16460 1) ACPI CA Core Subsystem:
16462 The ACPI 2.0 CopyObject operator is fully implemented. This
16463 operator creates a new copy of an object (and is also used to
16464 bypass the "implicit conversion" mechanism of the Store operator.)
16466 The ACPI 2.0 semantics for the SizeOf operator are fully
16467 implemented. The change is that performing a SizeOf on a
16468 reference object causes an automatic dereference of the object to
16469 tha actual value before the size is evaluated. This behavior was
16470 undefined in ACPI 1.0.
16472 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
16473 have been implemented. The interrupt polarity and mode are now
16476 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
16477 appearing in Package objects were not properly converted to
16478 integers when the internal Package was converted to an external
16479 object (via the AcpiEvaluateObject interface.)
16481 Fixed a problem with the namespace object deletion mechanism for
16482 objects created by control methods. There were two parts to this
16483 problem: 1) Objects created during the initialization phase method
16484 parse were not being deleted, and 2) The object owner ID mechanism
16485 to track objects was broken.
16487 Fixed a problem where the use of the ASL Scope operator within a
16488 control method would result in an invalid opcode exception.
16490 Fixed a problem introduced in the previous label where the buffer
16491 length required for the _PRT structure was not being returned
16494 Code and Data Size: Current core subsystem library sizes are shown
16495 below. These are the code and data sizes for the acpica.lib
16496 produced by the Microsoft Visual C++ 6.0 compiler, and these
16497 values do not include any ACPI driver or OSPM code. The debug
16498 version of the code includes the debug output trace mechanism and
16499 has a larger code and data size. Note that these values will vary
16500 depending on the efficiency of the compiler and the compiler
16501 options used during generation.
16503 Previous Release (11_20_01)
16504 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16505 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16508 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16509 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16513 Updated all files to apply cleanly against 2.4.16.
16515 Added basic PCI Interrupt Routing Table (PRT) support for IA32
16516 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
16517 version supports both static and dyanmic PRT entries, but dynamic
16518 entries are treated as if they were static (not yet
16519 reconfigurable). Architecture- specific code to use this data is
16520 absent on IA32 but should be available shortly.
16522 Changed the initialization sequence to start the ACPI interpreter
16523 (acpi_init) prior to initialization of the PCI driver (pci_init)
16524 in init/main.c. This ordering is required to support PRT and
16525 facilitate other (future) enhancement. A side effect is that the
16526 ACPI bus driver and certain device drivers can no longer be loaded
16529 Modified the 'make menuconfig' options to allow PCI Interrupt
16530 Routing support to be included without the ACPI Bus and other
16533 3) ASL Compiler, version X2033:
16535 Fixed some issues with the use of the new CopyObject and
16536 DataTableRegion operators. Both are fully functional.
16538 ----------------------------------------
16539 Summary of changes for this label: 11_20_01
16541 20 November 2001. Summary of changes for this release.
16543 1) ACPI CA Core Subsystem:
16545 Updated Index support to match ACPI 2.0 semantics. Storing a
16546 Integer, String, or Buffer to an Index of a Buffer will store only
16547 the least-significant byte of the source to the Indexed buffer
16548 byte. Multiple writes are not performed.
16550 Fixed a problem where the access type used in an AccessAs ASL
16551 operator was not recorded correctly into the field object.
16553 Fixed a problem where ASL Event objects were created in a
16554 signalled state. Events are now created in an unsignalled state.
16556 The internal object cache is now purged after table loading and
16557 initialization to reduce the use of dynamic kernel memory -- on
16558 the assumption that object use is greatest during the parse phase
16559 of the entire table (versus the run-time use of individual control
16562 ACPI 2.0 variable-length packages are now fully operational.
16564 Code and Data Size: Code and Data optimizations have permitted new
16565 feature development with an actual reduction in the library size.
16566 Current core subsystem library sizes are shown below. These are
16567 the code and data sizes for the acpica.lib produced by the
16568 Microsoft Visual C++ 6.0 compiler, and these values do not include
16569 any ACPI driver or OSPM code. The debug version of the code
16570 includes the debug output trace mechanism and has a larger code
16571 and data size. Note that these values will vary depending on the
16572 efficiency of the compiler and the compiler options used during
16575 Previous Release (11_09_01):
16576 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16577 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16580 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16581 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16585 Enhanced the ACPI boot-time initialization code to allow the use
16586 of Local APIC tables for processor enumeration on IA-32, and to
16587 pave the way for a fully MPS-free boot (on SMP systems) in the
16588 near future. This functionality replaces
16589 arch/i386/kernel/acpitables.c, which was introduced in an earlier
16590 2.4.15-preX release. To enable this feature you must add
16591 "acpi_boot=on" to the kernel command line -- see the help entry
16592 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16595 Restructured the configuration options to allow boot-time table
16596 parsing support without inclusion of the ACPI Interpreter (and
16599 NOTE: This release does not include fixes for the reported events,
16600 power-down, and thermal passive cooling issues (coming soon).
16604 Added additional typechecking for Fields within restricted access
16605 Operation Regions. All fields within EC and CMOS regions must be
16606 declared with ByteAcc. All fields withing SMBus regions must be
16607 declared with the BufferAcc access type.
16609 Fixed a problem where the listing file output of control methods
16610 no longer interleaved the actual AML code with the ASL source
16616 ----------------------------------------
16617 Summary of changes for this label: 11_09_01
16619 1) ACPI CA Core Subsystem:
16621 Implemented ACPI 2.0-defined support for writes to fields with a
16622 Buffer, String, or Integer source operand that is smaller than the
16623 target field. In these cases, the source operand is zero-extended
16624 to fill the target field.
16626 Fixed a problem where a Field starting bit offset (within the
16627 parent operation region) was calculated incorrectly if the
16629 alignment of the field differed from the access width. This
16630 affected CreateWordField, CreateDwordField, CreateQwordField, and
16631 possibly other fields that use the "AccessAny" keyword.
16633 Fixed a problem introduced in the 11_02_01 release where indirect
16634 stores through method arguments did not operate correctly.
16638 Implemented boot-time ACPI table parsing support
16639 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16640 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16641 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16642 processors, memory, and interrupts during setup_arch(). Note that
16643 this patch does not include the required architecture-specific
16644 changes required to apply this information -- subsequent patches
16645 will be posted for both IA32 and IA64 to achieve this.
16647 Added low-level sleep support for IA32 platforms, courtesy of Pat
16648 Mochel. This allows IA32 systems to transition to/from various
16649 sleeping states (e.g. S1, S3), although the lack of a centralized
16650 driver model and power-manageable drivers will prevent its
16651 (successful) use on most systems.
16653 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16654 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16655 tables" option, etc.
16657 Increased the default timeout for the EC driver from 1ms to 10ms
16658 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16661 ----------------------------------------
16662 Summary of changes for this label: 11_02_01
16664 1) ACPI CA Core Subsystem:
16666 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16667 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16670 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16671 changes to support ACPI 2.0 Qword field access. Read/Write
16672 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16673 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16674 the value parameter for the address space handler interface is now
16675 an ACPI_INTEGER. OSL implementations of these interfaces must now
16676 handle the case where the Width parameter is 64.
16678 Index Fields: Fixed a problem where unaligned bit assembly and
16679 disassembly for IndexFields was not supported correctly.
16681 Index and Bank Fields: Nested Index and Bank Fields are now
16682 supported. During field access, a check is performed to ensure
16683 that the value written to an Index or Bank register is not out of
16684 the range of the register. The Index (or Bank) register is
16685 written before each access to the field data. Future support will
16686 include allowing individual IndexFields to be wider than the
16687 DataRegister width.
16689 Fields: Fixed a problem where the AML interpreter was incorrectly
16690 attempting to write beyond the end of a Field/OpRegion. This was
16691 a boundary case that occurred when a DWORD field was written to a
16692 BYTE access OpRegion, forcing multiple writes and causing the
16693 interpreter to write one datum too many.
16695 Fields: Fixed a problem with Field/OpRegion access where the
16696 starting bit address of a field was incorrectly calculated if the
16697 current access type was wider than a byte (WordAcc, DwordAcc, or
16700 Fields: Fixed a problem where forward references to individual
16701 FieldUnits (individual Field names within a Field definition) were
16702 not resolved during the AML table load.
16704 Fields: Fixed a problem where forward references from a Field
16705 definition to the parent Operation Region definition were not
16706 resolved during the AML table load.
16708 Fields: Duplicate FieldUnit names within a scope are now detected
16709 during AML table load.
16711 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16712 returned an incorrect name for the root node.
16714 Code and Data Size: Code and Data optimizations have permitted new
16715 feature development with an actual reduction in the library size.
16716 Current core subsystem library sizes are shown below. These are
16717 the code and data sizes for the acpica.lib produced by the
16718 Microsoft Visual C++ 6.0 compiler, and these values do not include
16719 any ACPI driver or OSPM code. The debug version of the code
16720 includes the debug output trace mechanism and has a larger code
16721 and data size. Note that these values will vary depending on the
16722 efficiency of the compiler and the compiler options used during
16725 Previous Release (10_18_01):
16726 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16727 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16730 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16731 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16735 Improved /proc processor output (Pavel Machek) Re-added
16736 MODULE_LICENSE("GPL") to all modules.
16738 3) ASL Compiler version X2030:
16740 Duplicate FieldUnit names within a scope are now detected and
16745 Programmer Reference updated to reflect OSL and address space
16746 handler interface changes described above.
16748 ----------------------------------------
16749 Summary of changes for this label: 10_18_01
16751 ACPI CA Core Subsystem:
16753 Fixed a problem with the internal object reference count mechanism
16754 that occasionally caused premature object deletion. This resolves
16755 all of the outstanding problem reports where an object is deleted
16756 in the middle of an interpreter evaluation. Although this problem
16757 only showed up in rather obscure cases, the solution to the
16758 problem involved an adjustment of all reference counts involving
16759 objects attached to namespace nodes.
16761 Fixed a problem with Field support in the interpreter where
16762 writing to an aligned field whose length is an exact multiple (2
16763 or greater) of the field access granularity would cause an attempt
16764 to write beyond the end of the field.
16766 The top level AML opcode execution functions within the
16767 interpreter have been renamed with a more meaningful and
16768 consistent naming convention. The modules exmonad.c and
16769 exdyadic.c were eliminated. New modules are exoparg1.c,
16770 exoparg2.c, exoparg3.c, and exoparg6.c.
16772 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16774 Fixed a problem where the AML debugger was causing some internal
16775 objects to not be deleted during subsystem termination.
16777 Fixed a problem with the external AcpiEvaluateObject interface
16778 where the subsystem would fault if the named object to be
16779 evaluated refered to a constant such as Zero, Ones, etc.
16781 Fixed a problem with IndexFields and BankFields where the
16782 subsystem would fault if the index, data, or bank registers were
16783 not defined in the same scope as the field itself.
16785 Added printf format string checking for compilers that support
16786 this feature. Corrected more than 50 instances of issues with
16787 format specifiers within invocations of ACPI_DEBUG_PRINT
16788 throughout the core subsystem code.
16790 The ASL "Revision" operator now returns the ACPI support level
16791 implemented in the core - the value "2" since the ACPI 2.0 support
16792 is more than 50% implemented.
16794 Enhanced the output of the AML debugger "dump namespace" command
16795 to output in a more human-readable form.
16797 Current core subsystem library code sizes are shown below. These
16799 are the code and data sizes for the acpica.lib produced by the
16800 Microsoft Visual C++ 6.0 compiler, and these values do not include
16801 any ACPI driver or OSPM code. The debug version of the code
16802 includes the full debug trace mechanism -- leading to a much
16804 larger code and data size. Note that these values will vary
16805 depending on the efficiency of the compiler and the compiler
16806 options used during generation.
16808 Previous Label (09_20_01):
16809 Non-Debug Version: 65K Code, 5K Data, 70K Total
16810 Debug Version: 138K Code, 58K Data, 196K Total
16814 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16815 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16819 Implemented a "Bad BIOS Blacklist" to track machines that have
16820 known ASL/AML problems.
16822 Enhanced the /proc interface for the thermal zone driver and added
16823 support for _HOT (the critical suspend trip point). The 'info'
16824 file now includes threshold/policy information, and allows setting
16825 of _SCP (cooling preference) and _TZP (polling frequency) values
16826 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16827 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16828 preference to the passive/quiet mode (if supported by the ASL).
16830 Implemented a workaround for a gcc bug that resuted in an OOPs
16831 when loading the control method battery driver.
16833 ----------------------------------------
16834 Summary of changes for this label: 09_20_01
16836 ACPI CA Core Subsystem:
16838 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16839 modified to allow individual GPE levels to be flagged as wake-
16840 enabled (i.e., these GPEs are to remain enabled when the platform
16843 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16844 support wake-enabled GPEs. This means that upon entering the
16845 sleep state, all GPEs that are not wake-enabled are disabled.
16846 When leaving the sleep state, these GPEs are reenabled.
16848 A local double-precision divide/modulo module has been added to
16849 enhance portability to OS kernels where a 64-bit math library is
16850 not available. The new module is "utmath.c".
16852 Several optimizations have been made to reduce the use of CPU
16853 stack. Originally over 2K, the maximum stack usage is now below
16854 2K at 1860 bytes (1.82k)
16856 Fixed a problem with the AcpiGetFirmwareTable interface where the
16857 root table pointer was not mapped into a logical address properly.
16859 Fixed a problem where a NULL pointer was being dereferenced in the
16860 interpreter code for the ASL Notify operator.
16862 Fixed a problem where the use of the ASL Revision operator
16863 returned an error. This operator now returns the current version
16864 of the ACPI CA core subsystem.
16866 Fixed a problem where objects passed as control method parameters
16867 to AcpiEvaluateObject were always deleted at method termination.
16868 However, these objects may end up being stored into the namespace
16869 by the called method. The object reference count mechanism was
16870 applied to these objects instead of a force delete.
16872 Fixed a problem where static strings or buffers (contained in the
16873 AML code) that are declared as package elements within the ASL
16874 code could cause a fault because the interpreter would attempt to
16875 delete them. These objects are now marked with the "static
16876 object" flag to prevent any attempt to delete them.
16878 Implemented an interpreter optimization to use operands directly
16879 from the state object instead of extracting the operands to local
16880 variables. This reduces stack use and code size, and improves
16883 The module exxface.c was eliminated as it was an unnecessary extra
16886 Current core subsystem library code sizes are shown below. These
16887 are the code and data sizes for the acpica.lib produced by the
16888 Microsoft Visual C++ 6.0 compiler, and these values do not include
16889 any ACPI driver or OSPM code. The debug version of the code
16890 includes the full debug trace mechanism -- leading to a much
16891 larger code and data size. Note that these values will vary
16892 depending on the efficiency of the compiler and the compiler
16893 options used during generation.
16895 Non-Debug Version: 65K Code, 5K Data, 70K Total
16896 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16897 Total (Previously 195K)
16901 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16902 Integer objects are now 64 bits wide
16904 All Acpi data types and structures are now in lower case. Only
16905 Acpi macros are upper case for differentiation.
16909 Changes to the external interfaces as described above.
16911 ----------------------------------------
16912 Summary of changes for this label: 08_31_01
16914 ACPI CA Core Subsystem:
16916 A bug with interpreter implementation of the ASL Divide operator
16917 was found and fixed. The implicit function return value (not the
16918 explicit store operands) was returning the remainder instead of
16919 the quotient. This was a longstanding bug and it fixes several
16920 known outstanding issues on various platforms.
16922 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16923 been further optimized for size. There are 700 invocations of the
16924 DEBUG_PRINT macro alone, so each optimization reduces the size of
16925 the debug version of the subsystem significantly.
16927 A stack trace mechanism has been implemented. The maximum stack
16928 usage is about 2K on 32-bit platforms. The debugger command "stat
16929 stack" will display the current maximum stack usage.
16931 All public symbols and global variables within the subsystem are
16932 now prefixed with the string "Acpi". This keeps all of the
16933 symbols grouped together in a kernel map, and avoids conflicts
16934 with other kernel subsystems.
16936 Most of the internal fixed lookup tables have been moved into the
16937 code segment via the const operator.
16939 Several enhancements have been made to the interpreter to both
16940 reduce the code size and improve performance.
16942 Current core subsystem library code sizes are shown below. These
16943 are the code and data sizes for the acpica.lib produced by the
16944 Microsoft Visual C++ 6.0 compiler, and these values do not include
16945 any ACPI driver or OSPM code. The debug version of the code
16946 includes the full debug trace mechanism which contains over 700
16947 invocations of the DEBUG_PRINT macro, 500 function entry macro
16948 invocations, and over 900 function exit macro invocations --
16949 leading to a much larger code and data size. Note that these
16950 values will vary depending on the efficiency of the compiler and
16951 the compiler options used during generation.
16953 Non-Debug Version: 64K Code, 5K Data, 69K Total
16954 Debug Version: 137K Code, 58K Data, 195K Total
16958 Implemented wbinvd() macro, pending a kernel-wide definition.
16960 Fixed /proc/acpi/event to handle poll() and short reads.
16962 ASL Compiler, version X2026:
16964 Fixed a problem introduced in the previous label where the AML
16966 code emitted for package objects produced packages with zero
16969 ----------------------------------------
16970 Summary of changes for this label: 08_16_01
16972 ACPI CA Core Subsystem:
16974 The following ACPI 2.0 ASL operators have been implemented in the
16975 AML interpreter (These are already supported by the Intel ASL
16976 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16977 ToBuffer. Support for 64-bit AML constants is implemented in the
16978 AML parser, debugger, and disassembler.
16980 The internal memory tracking mechanism (leak detection code) has
16981 been upgraded to reduce the memory overhead (a separate tracking
16982 block is no longer allocated for each memory allocation), and now
16983 supports all of the internal object caches.
16985 The data structures and code for the internal object caches have
16986 been coelesced and optimized so that there is a single cache and
16987 memory list data structure and a single group of functions that
16988 implement generic cache management. This has reduced the code
16989 size in both the debug and release versions of the subsystem.
16991 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16992 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16993 different, because it generates a single call to an internal
16994 function. This results in a savings of about 90 bytes per
16995 invocation, resulting in an overall code and data savings of about
16996 16% in the debug version of the subsystem.
17000 Fixed C3 disk corruption problems and re-enabled C3 on supporting
17003 Integrated low-level sleep code by Patrick Mochel.
17005 Further tweaked source code Linuxization.
17011 Support for ACPI 2.0 variable length packages is fixed/completed.
17013 Fixed a problem where the optional length parameter for the ACPI
17014 2.0 ToString operator.
17016 Fixed multiple extraneous error messages when a syntax error is
17017 detected within the declaration line of a control method.
17019 ----------------------------------------
17020 Summary of changes for this label: 07_17_01
17022 ACPI CA Core Subsystem:
17024 Added a new interface named AcpiGetFirmwareTable to obtain any
17025 ACPI table via the ACPI signature. The interface can be called at
17026 any time during kernel initialization, even before the kernel
17027 virtual memory manager is initialized and paging is enabled. This
17028 allows kernel subsystems to obtain ACPI tables very early, even
17029 before the ACPI CA subsystem is initialized.
17031 Fixed a problem where Fields defined with the AnyAcc attribute
17032 could be resolved to the incorrect address under the following
17033 conditions: 1) the field width is larger than 8 bits and 2) the
17034 parent operation region is not defined on a DWORD boundary.
17036 Fixed a problem where the interpreter is not being locked during
17037 namespace initialization (during execution of the _INI control
17038 methods), causing an error when an attempt is made to release it
17041 ACPI 2.0 support in the AML Interpreter has begun and will be
17042 ongoing throughout the rest of this year. In this label, The Mod
17043 operator is implemented.
17045 Added a new data type to contain full PCI addresses named
17046 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
17047 and Function values.
17051 Enhanced the Linux version of the source code to change most
17052 capitalized ACPI type names to lowercase. For example, all
17053 instances of ACPI_STATUS are changed to acpi_status. This will
17054 result in a large diff, but the change is strictly cosmetic and
17055 aligns the CA code closer to the Linux coding standard.
17059 The interfaces to the PCI configuration space have been changed to
17060 add the PCI Segment number and to split the single 32-bit combined
17061 DeviceFunction field into two 16-bit fields. This was
17062 accomplished by moving the four values that define an address in
17063 PCI configuration space (segment, bus, device, and function) to
17064 the new ACPI_PCI_ID structure.
17066 The changes to the PCI configuration space interfaces led to a
17067 reexamination of the complete set of address space access
17068 interfaces for PCI, I/O, and Memory. The previously existing 18
17069 interfaces have proven difficult to maintain (any small change
17070 must be propagated across at least 6 interfaces) and do not easily
17071 allow for future expansion to 64 bits if necessary. Also, on some
17072 systems, it would not be appropriate to demultiplex the access
17073 width (8, 16, 32,or 64) before calling the OSL if the
17074 corresponding native OS interfaces contain a similar access width
17075 parameter. For these reasons, the 18 address space interfaces
17076 have been replaced by these 6 new ones:
17078 AcpiOsReadPciConfiguration
17079 AcpiOsWritePciConfiguration
17085 Added a new interface named AcpiOsGetRootPointer to allow the OSL
17086 to perform the platform and/or OS-specific actions necessary to
17087 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
17088 interface will simply call down to the CA core to perform the low-
17089 memory search for the table. On IA-64, the RSDP is obtained from
17090 EFI. Migrating this interface to the OSL allows the CA core to
17092 remain OS and platform independent.
17094 Added a new interface named AcpiOsSignal to provide a generic
17095 "function code and pointer" interface for various miscellaneous
17096 signals and notifications that must be made to the host OS. The
17097 first such signals are intended to support the ASL Fatal and
17098 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
17099 interface has been obsoleted.
17101 The definition of the AcpiFormatException interface has been
17102 changed to simplify its use. The caller no longer must supply a
17103 buffer to the call; A pointer to a const string is now returned
17104 directly. This allows the call to be easily used in printf
17105 statements, etc. since the caller does not have to manage a local
17109 ASL Compiler, Version X2025:
17111 The ACPI 2.0 Switch/Case/Default operators have been implemented
17112 and are fully functional. They will work with all ACPI 1.0
17113 interpreters, since the operators are simply translated to If/Else
17116 The ACPI 2.0 ElseIf operator is implemented and will also work
17117 with 1.0 interpreters, for the same reason.
17119 Implemented support for ACPI 2.0 variable-length packages. These
17120 packages have a separate opcode, and their size is determined by
17121 the interpreter at run-time.
17123 Documentation The ACPI CA Programmer Reference has been updated to
17124 reflect the new interfaces and changes to existing interfaces.
17126 ------------------------------------------
17127 Summary of changes for this label: 06_15_01
17129 ACPI CA Core Subsystem:
17131 Fixed a problem where a DWORD-accessed field within a Buffer
17132 object would get its byte address inadvertently rounded down to
17133 the nearest DWORD. Buffers are always Byte-accessible.
17135 ASL Compiler, version X2024:
17137 Fixed a problem where the Switch() operator would either fault or
17138 hang the compiler. Note however, that the AML code for this ACPI
17139 2.0 operator is not yet implemented.
17141 Compiler uses the new AcpiOsGetTimer interface to obtain compile
17144 Implementation of the CreateField operator automatically converts
17145 a reference to a named field within a resource descriptor from a
17146 byte offset to a bit offset if required.
17148 Added some missing named fields from the resource descriptor
17149 support. These are the names that are automatically created by the
17150 compiler to reference fields within a descriptor. They are only
17151 valid at compile time and are not passed through to the AML
17154 Resource descriptor named fields are now typed as Integers and
17155 subject to compile-time typechecking when used in expressions.
17157 ------------------------------------------
17158 Summary of changes for this label: 05_18_01
17160 ACPI CA Core Subsystem:
17162 Fixed a couple of problems in the Field support code where bits
17163 from adjacent fields could be returned along with the proper field
17164 bits. Restructured the field support code to improve performance,
17165 readability and maintainability.
17167 New DEBUG_PRINTP macro automatically inserts the procedure name
17168 into the output, saving hundreds of copies of procedure name
17169 strings within the source, shrinking the memory footprint of the
17170 debug version of the core subsystem.
17172 Source Code Structure:
17174 The source code directory tree was restructured to reflect the
17175 current organization of the component architecture. Some files
17176 and directories have been moved and/or renamed.
17180 Fixed leaking kacpidpc processes.
17182 Fixed queueing event data even when /proc/acpi/event is not
17185 ASL Compiler, version X2020:
17187 Memory allocation performance enhancement - over 24X compile time
17188 improvement on large ASL files. Parse nodes and namestring
17189 buffers are now allocated from a large internal compiler buffer.
17191 The temporary .SRC file is deleted unless the "-s" option is
17194 The "-d" debug output option now sends all output to the .DBG file
17195 instead of the console.
17197 "External" second parameter is now optional
17199 "ElseIf" syntax now properly allows the predicate
17201 Last operand to "Load" now recognized as a Target operand
17203 Debug object can now be used anywhere as a normal object.
17205 ResourceTemplate now returns an object of type BUFFER
17207 EISAID now returns an object of type INTEGER
17209 "Index" now works with a STRING operand
17211 "LoadTable" now accepts optional parameters
17213 "ToString" length parameter is now optional
17215 "Interrupt (ResourceType," parse error fixed.
17217 "Register" with a user-defined region space parse error fixed
17219 Escaped backslash at the end of a string ("\\") scan/parse error
17222 "Revision" is now an object of type INTEGER.
17226 ------------------------------------------
17227 Summary of changes for this label: 05_02_01
17231 /proc/acpi/event now blocks properly.
17233 Removed /proc/sys/acpi. You can still dump your DSDT from
17236 ACPI CA Core Subsystem:
17238 Fixed a problem introduced in the previous label where some of the
17239 "small" resource descriptor types were not recognized.
17241 Improved error messages for the case where an ASL Field is outside
17242 the range of the parent operation region.
17244 ASL Compiler, version X2018:
17247 Added error detection for ASL Fields that extend beyond the length
17248 of the parent operation region (only if the length of the region
17249 is known at compile time.) This includes fields that have a
17250 minimum access width that is smaller than the parent region, and
17251 individual field units that are partially or entirely beyond the
17252 extent of the parent.
17256 ------------------------------------------
17257 Summary of changes for this label: 04_27_01
17259 ACPI CA Core Subsystem:
17261 Fixed a problem where the namespace mutex could be released at the
17262 wrong time during execution of AcpiRemoveAddressSpaceHandler.
17264 Added optional thread ID output for debug traces, to simplify
17265 debugging of multiple threads. Added context switch notification
17266 when the debug code realizes that a different thread is now
17267 executing ACPI code.
17269 Some additional external data types have been prefixed with the
17270 string "ACPI_" for consistency. This may effect existing code.
17271 The data types affected are the external callback typedefs - e.g.,
17273 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
17277 Fixed an issue with the OSL semaphore implementation where a
17278 thread was waking up with an error from receiving a SIGCHLD
17281 Linux version of ACPI CA now uses the system C library for string
17282 manipulation routines instead of a local implementation.
17284 Cleaned up comments and removed TBDs.
17286 ASL Compiler, version X2017:
17288 Enhanced error detection and reporting for all file I/O
17293 Programmer Reference updated to version 1.06.
17297 ------------------------------------------
17298 Summary of changes for this label: 04_13_01
17300 ACPI CA Core Subsystem:
17302 Restructured support for BufferFields and RegionFields.
17303 BankFields support is now fully operational. All known 32-bit
17304 limitations on field sizes have been removed. Both BufferFields
17305 and (Operation) RegionFields are now supported by the same field
17308 Resource support now supports QWORD address and IO resources. The
17309 16/32/64 bit address structures and the Extended IRQ structure
17310 have been changed to properly handle Source Resource strings.
17312 A ThreadId of -1 is now used to indicate a "mutex not acquired"
17313 condition internally and must never be returned by AcpiOsThreadId.
17314 This reserved value was changed from 0 since Unix systems allow a
17319 Driver code reorganized to enhance portability
17321 Added a kernel configuration option to control ACPI_DEBUG
17323 Fixed the EC driver to honor _GLK.
17325 ASL Compiler, version X2016:
17327 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
17328 address space was set to 0, not 0x7f as it should be.
17330 ------------------------------------------
17331 Summary of changes for this label: 03_13_01
17333 ACPI CA Core Subsystem:
17335 During ACPI initialization, the _SB_._INI method is now run if
17338 Notify handler fix - notifies are deferred until the parent method
17339 completes execution. This fixes the "mutex already acquired"
17340 issue seen occasionally.
17342 Part of the "implicit conversion" rules in ACPI 2.0 have been
17343 found to cause compatibility problems with existing ASL/AML. The
17344 convert "result-to-target-type" implementation has been removed
17345 for stores to method Args and Locals. Source operand conversion
17346 is still fully implemented. Possible changes to ACPI 2.0
17347 specification pending.
17349 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
17352 Fix for compiler warnings for 64-bit compiles.
17356 /proc output aligned for easier parsing.
17358 Release-version compile problem fixed.
17360 New kernel configuration options documented in Configure.help.
17362 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
17367 Power resource driver integrated with bus manager.
17369 Fixed kernel fault during active cooling for thermal zones.
17373 The source code tree has been restructured.
17377 ------------------------------------------
17378 Summary of changes for this label: 03_02_01
17380 Linux OS Services Layer (OSL):
17382 Major revision of all Linux-specific code.
17384 Modularized all ACPI-specific drivers.
17386 Added new thermal zone and power resource drivers.
17388 Revamped /proc interface (new functionality is under /proc/acpi).
17390 New kernel configuration options.
17392 Linux known issues:
17394 New kernel configuration options not documented in Configure.help
17398 Module dependencies not currently implemented. If used, they
17399 should be loaded in this order: busmgr, power, ec, system,
17400 processor, battery, ac_adapter, button, thermal.
17402 Modules will not load if CONFIG_MODVERSION is set.
17404 IBM 600E - entering S5 may reboot instead of shutting down.
17406 IBM 600E - Sleep button may generate "Invalid <NULL> context"
17409 Some systems may fail with "execution mutex already acquired"
17412 ACPI CA Core Subsystem:
17414 Added a new OSL Interface, AcpiOsGetThreadId. This was required
17415 for the deadlock detection code. Defined to return a non-zero, 32-
17416 bit thread ID for the currently executing thread. May be a non-
17417 zero constant integer on single-thread systems.
17419 Implemented deadlock detection for internal subsystem mutexes. We
17420 may add conditional compilation for this code (debug only) later.
17422 ASL/AML Mutex object semantics are now fully supported. This
17423 includes multiple acquires/releases by owner and support for the
17425 Mutex SyncLevel parameter.
17427 A new "Force Release" mechanism automatically frees all ASL
17428 Mutexes that have been acquired but not released when a thread
17429 exits the interpreter. This forces conformance to the ACPI spec
17430 ("All mutexes must be released when an invocation exits") and
17431 prevents deadlocked ASL threads. This mechanism can be expanded
17432 (later) to monitor other resource acquisitions if OEM ASL code
17433 continues to misbehave (which it will).
17435 Several new ACPI exception codes have been added for the Mutex
17438 Recursive method calls are now allowed and supported (the ACPI
17439 spec does in fact allow recursive method calls.) The number of
17440 recursive calls is subject to the restrictions imposed by the
17441 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
17444 Implemented support for the SyncLevel parameter for control
17445 methods (ACPI 2.0 feature)
17447 Fixed a deadlock problem when multiple threads attempted to use
17450 Fixed a problem where the string length of a String package
17451 element was not always set in a package returned from
17452 AcpiEvaluateObject.
17454 Fixed a problem where the length of a String package element was
17455 not always included in the length of the overall package returned
17456 from AcpiEvaluateObject.
17458 Added external interfaces (Acpi*) to the ACPI debug memory
17459 manager. This manager keeps a list of all outstanding
17460 allocations, and can therefore detect memory leaks and attempts to
17461 free memory blocks more than once. Useful for code such as the
17462 power manager, etc. May not be appropriate for device drivers.
17463 Performance with the debug code enabled is slow.
17465 The ACPI Global Lock is now an optional hardware element.
17467 ASL Compiler Version X2015:
17469 Integrated changes to allow the compiler to be generated on
17470 multiple platforms.
17472 Linux makefile added to generate the compiler on Linux
17476 All platform-specific headers have been moved to their own
17477 subdirectory, Include/Platform.
17479 New source file added, Interpreter/ammutex.c
17481 New header file, Include/acstruct.h
17485 The programmer reference has been updated for the following new
17486 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
17488 ------------------------------------------
17489 Summary of changes for this label: 02_08_01
17491 Core ACPI CA Subsystem: Fixed a problem where an error was
17492 incorrectly returned if the return resource buffer was larger than
17493 the actual data (in the resource interfaces).
17495 References to named objects within packages are resolved to the
17497 full pathname string before packages are returned directly (via
17498 the AcpiEvaluateObject interface) or indirectly via the resource
17501 Linux OS Services Layer (OSL):
17503 Improved /proc battery interface.
17506 Added C-state debugging output and other miscellaneous fixes.
17508 ASL Compiler Version X2014:
17510 All defined method arguments can now be used as local variables,
17511 including the ones that are not actually passed in as parameters.
17512 The compiler tracks initialization of the arguments and issues an
17513 exception if they are used without prior assignment (just like
17516 The -o option now specifies a filename prefix that is used for all
17517 output files, including the AML output file. Otherwise, the
17518 default behavior is as follows: 1) the AML goes to the file
17519 specified in the DSDT. 2) all other output files use the input
17520 source filename as the base.
17522 ------------------------------------------
17523 Summary of changes for this label: 01_25_01
17525 Core ACPI CA Subsystem: Restructured the implementation of object
17526 store support within the interpreter. This includes support for
17527 the Store operator as well as any ASL operators that include a
17530 Partially implemented support for Implicit Result-to-Target
17531 conversion. This is when a result object is converted on the fly
17532 to the type of an existing target object. Completion of this
17533 support is pending further analysis of the ACPI specification
17534 concerning this matter.
17536 CPU-specific code has been removed from the subsystem (hardware
17539 New Power Management Timer functions added
17541 Linux OS Services Layer (OSL): Moved system state transition code
17542 to the core, fixed it, and modified Linux OSL accordingly.
17544 Fixed C2 and C3 latency calculations.
17547 We no longer use the compilation date for the version message on
17548 initialization, but retrieve the version from AcpiGetSystemInfo().
17550 Incorporated for fix Sony VAIO machines.
17552 Documentation: The Programmer Reference has been updated and
17556 ASL Compiler: Version X2013: Fixed a problem where the line
17557 numbering and error reporting could get out of sync in the
17558 presence of multiple include files.
17560 ------------------------------------------
17561 Summary of changes for this label: 01_15_01
17563 Core ACPI CA Subsystem:
17565 Implemented support for type conversions in the execution of the
17566 ASL Concatenate operator (The second operand is converted to
17567 match the type of the first operand before concatenation.)
17569 Support for implicit source operand conversion is partially
17570 implemented. The ASL source operand types Integer, Buffer, and
17571 String are freely interchangeable for most ASL operators and are
17572 converted by the interpreter on the fly as required. Implicit
17573 Target operand conversion (where the result is converted to the
17574 target type before storing) is not yet implemented.
17576 Support for 32-bit and 64-bit BCD integers is implemented.
17578 Problem fixed where a field read on an aligned field could cause a
17579 read past the end of the field.
17581 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
17582 does not return a value, but the caller expects one. (The ASL
17583 compiler flags this as a warning.)
17588 1. Static typechecking of all operands is implemented. This
17589 prevents the use of invalid objects (such as using a Package where
17590 an Integer is required) at compile time instead of at interpreter
17592 2. The ASL source line is printed with ALL errors and warnings.
17593 3. Bug fix for source EOF without final linefeed.
17594 4. Debug option is split into a parse trace and a namespace trace.
17595 5. Namespace output option (-n) includes initial values for
17596 integers and strings.
17597 6. Parse-only option added for quick syntax checking.
17598 7. Compiler checks for duplicate ACPI name declarations
17601 1. Relaxed typechecking to allow interchangeability between
17602 strings, integers, and buffers. These types are now converted by
17603 the interpreter at runtime.
17604 2. Compiler reports time taken by each internal subsystem in the
17608 ------------------------------------------
17609 Summary of changes for this label: 12_14_00
17613 This is the first official release of the compiler. Since the
17614 compiler requires elements of the Core Subsystem, this label
17615 synchronizes everything.
17617 ------------------------------------------
17618 Summary of changes for this label: 12_08_00
17621 Fixed a problem where named references within the ASL definition
17622 of both OperationRegions and CreateXXXFields did not work
17623 properly. The symptom was an AE_AML_OPERAND_TYPE during
17624 initialization of the region/field. This is similar (but not
17625 related internally) to the problem that was fixed in the last
17628 Implemented both 32-bit and 64-bit support for the BCD ASL
17629 functions ToBCD and FromBCD.
17631 Updated all legal headers to include "2000" in the copyright
17634 ------------------------------------------
17635 Summary of changes for this label: 12_01_00
17637 Fixed a problem where method invocations within the ASL definition
17638 of both OperationRegions and CreateXXXFields did not work
17639 properly. The symptom was an AE_AML_OPERAND_TYPE during
17640 initialization of the region/field:
17642 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17643 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17646 Fixed a problem where operators with more than one nested
17647 subexpression would fail. The symptoms were varied, by mostly
17648 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17649 problem that has gone unnoticed until now.
17651 Subtract (Add (1,2), Multiply (3,4))
17653 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17654 previous build (The prefix part of a relative path was handled
17657 Fixed a problem where Operation Region initialization failed if
17658 the operation region name was a "namepath" instead of a simple
17659 "nameseg". Symptom was an AE_NO_OPERAND error.
17661 Fixed a problem where an assignment to a local variable via the
17662 indirect RefOf mechanism only worked for the first such
17663 assignment. Subsequent assignments were ignored.
17665 ------------------------------------------
17666 Summary of changes for this label: 11_15_00
17668 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17669 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17670 the AML interpreter does NOT have support for the new 2.0 ASL
17671 grammar terms at this time.
17673 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17676 All physical memory addresses across all platforms are now 64 bits
17677 wide. Logical address width remains dependent on the platform
17680 AcpiOsMapMemory interface changed to a 64-bit physical address.
17682 The AML interpreter integer size is now 64 bits, as per the ACPI
17685 For backwards compatibility with ACPI 1.0, ACPI tables with a
17686 revision number less than 2 use 32-bit integers only.
17688 Fixed a problem where the evaluation of OpRegion operands did not
17689 always resolve them to numbers properly.
17691 ------------------------------------------
17692 Summary of changes for this label: 10_20_00
17694 Fix for CBN_._STA issue. This fix will allow correct access to
17695 CBN_ OpRegions when the _STA returns 0x8.
17697 Support to convert ACPI constants (Ones, Zeros, One) to actual
17698 values before a package object is returned
17700 Fix for method call as predicate to if/while construct causing
17701 incorrect if/while behavior
17703 Fix for Else block package lengths sometimes calculated wrong (if
17706 Fix for Processor object length field, was always zero
17708 Table load abort if FACP sanity check fails
17710 Fix for problem with Scope(name) if name already exists
17712 Warning emitted if a named object referenced cannot be found
17713 (resolved) during method execution.
17719 ------------------------------------------
17720 Summary of changes for this label: 9_29_00
17722 New table initialization interfaces: AcpiInitializeSubsystem no
17723 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17724 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17725 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17728 Note: These interface changes require changes to all existing OSDs
17730 The PCI_Config default address space handler is always installed
17731 at the root namespace object.
17733 -------------------------------------------
17734 Summary of changes for this label: 09_15_00
17736 The new initialization architecture is implemented. New
17737 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17738 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17740 (Namespace is automatically loaded when a table is loaded)
17742 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17743 52 bytes to 32 bytes. There is usually one of these for every
17744 namespace object, so the memory savings is significant.
17746 Implemented just-in-time evaluation of the CreateField operators.
17748 Bug fixes for IA-64 support have been integrated.
17750 Additional code review comments have been implemented
17752 The so-called "third pass parse" has been replaced by a final walk
17753 through the namespace to initialize all operation regions (address
17754 spaces) and fields that have not yet been initialized during the
17755 execution of the various _INI and REG methods.
17757 New file - namespace/nsinit.c
17759 -------------------------------------------
17760 Summary of changes for this label: 09_01_00
17762 Namespace manager data structures have been reworked to change the
17763 primary object from a table to a single object. This has
17764 resulted in dynamic memory savings of 3X within the namespace and
17765 2X overall in the ACPI CA subsystem.
17767 Fixed problem where the call to AcpiEvFindPciRootBuses was
17768 inadvertently left commented out.
17770 Reduced the warning count when generating the source with the GCC
17773 Revision numbers added to each module header showing the
17774 SourceSafe version of the file. Please refer to this version
17775 number when giving us feedback or comments on individual modules.
17777 The main object types within the subsystem have been renamed to
17778 clarify their purpose:
17780 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17781 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17782 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17784 NOTE: no changes to the initialization sequence are included in
17787 -------------------------------------------
17788 Summary of changes for this label: 08_23_00
17790 Fixed problem where TerminateControlMethod was being called
17791 multiple times per method
17793 Fixed debugger problem where single stepping caused a semaphore to
17796 Improved performance through additional parse object caching -
17797 added ACPI_EXTENDED_OP type
17799 -------------------------------------------
17800 Summary of changes for this label: 08_10_00
17802 Parser/Interpreter integration: Eliminated the creation of
17803 complete parse trees for ACPI tables and control methods.
17804 Instead, parse subtrees are created and then deleted as soon as
17805 they are processed (Either entered into the namespace or executed
17806 by the interpreter). This reduces the use of dynamic kernel
17807 memory significantly. (about 10X)
17809 Exception codes broken into classes and renumbered. Be sure to
17810 recompile all code that includes acexcep.h. Hopefully we won't
17811 have to renumber the codes again now that they are split into
17812 classes (environment, programmer, AML code, ACPI table, and
17815 Fixed some additional alignment issues in the Resource Manager
17818 Implemented semaphore tracking in the AcpiExec utility, and fixed
17819 several places where mutexes/semaphores were being unlocked
17820 without a corresponding lock operation. There are no known
17821 semaphore or mutex "leaks" at this time.
17823 Fixed the case where an ASL Return operator is used to return an
17826 -------------------------------------------
17827 Summary of changes for this label: 07_28_00
17829 Fixed a problem with the way addresses were calculated in
17830 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17831 manifested itself when a Field was created with WordAccess or
17832 DwordAccess, but the field unit defined within the Field was less
17834 than a Word or Dword.
17836 Fixed a problem in AmlDumpOperands() module's loop to pull
17837 operands off of the operand stack to display information. The
17838 problem manifested itself as a TLB error on 64-bit systems when
17839 accessing an operand stack with two or more operands.
17841 Fixed a problem with the PCI configuration space handlers where
17842 context was getting confused between accesses. This required a
17843 change to the generic address space handler and address space
17844 setup definitions. Handlers now get both a global handler context
17845 (this is the one passed in by the user when executing
17846 AcpiInstallAddressSpaceHandler() and a specific region context
17847 that is unique to each region (For example, the _ADR, _SEG and
17848 _BBN values associated with a specific region). The generic
17849 function definitions have changed to the following:
17851 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17852 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17853 *HandlerContext, // This used to be void *Context void
17854 *RegionContext); // This is an additional parameter
17856 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17857 RegionHandle, UINT32 Function, void *HandlerContext, void
17858 **RegionContext); // This used to be **ReturnContext
17860 -------------------------------------------
17861 Summary of changes for this label: 07_21_00
17863 Major file consolidation and rename. All files within the
17864 interpreter have been renamed as well as most header files. This
17865 was done to prevent collisions with existing files in the host
17866 OSs -- filenames such as "config.h" and "global.h" seem to be
17867 quite common. The VC project files have been updated. All
17868 makefiles will require modification.
17870 The parser/interpreter integration continues in Phase 5 with the
17871 implementation of a complete 2-pass parse (the AML is parsed
17872 twice) for each table; This avoids the construction of a huge
17873 parse tree and therefore reduces the amount of dynamic memory
17874 required by the subsystem. Greater use of the parse object cache
17875 means that performance is unaffected.
17877 Many comments from the two code reviews have been rolled in.
17879 The 64-bit alignment support is complete.
17881 -------------------------------------------
17882 Summary of changes for this label: 06_30_00
17884 With a nod and a tip of the hat to the technology of yesteryear,
17885 we've added support in the source code for 80 column output
17886 devices. The code is now mostly constrained to 80 columns or
17887 less to support environments and editors that 1) cannot display
17888 or print more than 80 characters on a single line, and 2) cannot
17889 disable line wrapping.
17891 A major restructuring of the namespace data structure has been
17892 completed. The result is 1) cleaner and more
17893 understandable/maintainable code, and 2) a significant reduction
17894 in the dynamic memory requirement for each named ACPI object
17897 -------------------------------------------
17898 Summary of changes for this label: 06_23_00
17900 Linux support has been added. In order to obtain approval to get
17901 the ACPI CA subsystem into the Linux kernel, we've had to make
17902 quite a few changes to the base subsystem that will affect all
17903 users (all the changes are generic and OS- independent). The
17904 effects of these global changes have been somewhat far reaching.
17905 Files have been merged and/or renamed and interfaces have been
17906 renamed. The major changes are described below.
17908 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17909 pollution/confusion within our target kernels. All OSD
17910 interfaces must be modified to match the new naming convention.
17912 Files merged across the subsystem. A number of the smaller source
17913 and header files have been merged to reduce the file count and
17914 increase the density of the existing files. There are too many
17915 to list here. In general, makefiles that call out individual
17916 files will require rebuilding.
17918 Interpreter files renamed. All interpreter files now have the
17919 prefix am* instead of ie* and is*.
17921 Header files renamed: The acapi.h file is now acpixf.h. The
17922 acpiosd.h file is now acpiosxf.h. We are removing references to
17923 the acronym "API" since it is somewhat windowsy. The new name is
17924 "external interface" or xface or xf in the filenames.j
17927 All manifest constants have been forced to upper case (some were
17928 mixed case.) Also, the string "ACPI_" has been prepended to many
17929 (not all) of the constants, typedefs, and structs.
17931 The globals "DebugLevel" and "DebugLayer" have been renamed
17932 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17934 All other globals within the subsystem are now prefixed with
17935 "AcpiGbl_" Internal procedures within the subsystem are now
17936 prefixed with "Acpi" (with only a few exceptions). The original
17937 two-letter abbreviation for the subcomponent remains after "Acpi"
17938 - for example, CmCallocate became AcpiCmCallocate.
17940 Added a source code translation/conversion utility. Used to
17941 generate the Linux source code, it can be modified to generate
17942 other types of source as well. Can also be used to cleanup
17943 existing source by removing extraneous spaces and blank lines.
17944 Found in tools/acpisrc/*
17946 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17947 AcpiOsUnmapMemory. (UnMap became Unmap).
17949 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17950 When set to one, this indicates that the caller wants to use the
17952 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17953 both types. However, implementers of this call may want to use
17954 different OS primitives depending on the type of semaphore
17955 requested. For example, some operating systems provide separate
17957 "mutex" and "semaphore" interfaces - where the mutex interface is
17958 much faster because it doesn't have all the overhead of a full
17959 semaphore implementation.
17961 Fixed a deadlock problem where a method that accesses the PCI
17962 address space can block forever if it is the first access to the
17965 -------------------------------------------
17966 Summary of changes for this label: 06_02_00
17968 Support for environments that cannot handle unaligned data
17969 accesses (e.g. firmware and OS environments devoid of alignment
17970 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17971 been added (via configurable macros) in these three areas: -
17972 Transfer of data from the raw AML byte stream is done via byte
17973 moves instead of word/dword/qword moves. - External objects are
17974 aligned within the user buffer, including package elements (sub-
17975 objects). - Conversion of name strings to UINT32 Acpi Names is now
17978 The Store operator was modified to mimic Microsoft's
17979 implementation when storing to a Buffer Field.
17981 Added a check of the BM_STS bit before entering C3.
17983 The methods subdirectory has been obsoleted and removed. A new
17984 file, cmeval.c subsumes the functionality.
17986 A 16-bit (DOS) version of AcpiExec has been developed. The
17987 makefile is under the acpiexec directory.