1 ----------------------------------------
2 13 March 2018. Summary of changes for version 20180313:
5 1) ACPICA kernel-resident subsystem:
7 Implemented various improvements to the GPE support:
9 1) Dispatch all active GPEs at initialization time so that no GPEs are
11 2) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled
12 before devices are enumerated.
13 3) Don't unconditionally clear ACPI IRQs during suspend/resume, so that
15 4) Add parallel GPE handling to eliminate the possibility of dispatching
17 5) Dispatch any pending GPEs after enabling for the first time.
19 AcpiGetObjectInfo - removed support for the _STA method. This was causing
20 problems on some platforms.
22 Added a new _OSI string, "Windows 2017.2".
24 Cleaned up and simplified the module-level code support. These changes
25 are in preparation for the eventual removal of the legacy MLC support
26 (deferred execution), replaced by the new MLC architecture which executes
27 the MLC as a table is loaded (DSDT/SSDTs).
29 Changed a compile-time option to a runtime option. Changes the option to
30 ignore ACPI table load-time package resolution errors into a runtime
31 option. Used only for platforms that generate many AE_NOT_FOUND errors
32 during boot. AcpiGbl_IgnorePackageResolutionErrors.
34 Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some
35 ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid
36 compilation errors from unused variables (seen with some compilers).
39 2) iASL Compiler/Disassembler and Tools:
41 ASLTS: parallelized execution in order to achieve an (approximately) 2X
44 ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves
47 ----------------------------------------
48 09 February 2018. Summary of changes for version 20180209:
51 1) ACPICA kernel-resident subsystem:
53 Completed the final integration of the recent changes to Package Object
54 handling and the module-level AML code support. This allows forward
55 references from individual package elements when the package object is
56 declared from within module-level code blocks. Provides compatibility
57 with other ACPI implementations.
59 The new architecture for the AML module-level code has been completed and
60 is now the default for the ACPICA code. This new architecture executes
61 the module-level code in-line as the ACPI table is loaded/parsed instead
62 of the previous architecture which deferred this code until after the
63 table was fully loaded. This solves some ASL code ordering issues and
64 provides compatibility with other ACPI implementations. At this time,
65 there is an option to fallback to the earlier architecture, but this
66 support is deprecated and is planned to be completely removed later this
69 Added a compile-time option to ignore AE_NOT_FOUND exceptions during
70 resolution of named reference elements within Package objects. Although
71 this is potentially a serious problem, it can generate a lot of
72 noise/errors on platforms whose firmware carries around a bunch of unused
73 Package objects. To disable these errors, define
74 ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All
75 errors are always reported for ACPICA applications such as AcpiExec.
77 Fixed a regression related to the explicit type-conversion AML operators
78 (ToXXXX). The regression was introduced early in 2017 but was not seen
79 until recently because these operators are not fully supported by other
80 ACPI implementations and are thus rarely used by firmware developers. The
81 operators are defined by the ACPI specification to not implement the
82 "implicit result object conversion". The regression incorrectly
83 introduced this object conversion for the following explicit conversion
94 2) iASL Compiler/Disassembler and Tools:
96 iASL: Fixed a problem with the compiler constant folding feature as
97 related to the ToXXXX explicit conversion operators. These operators do
98 not support the "implicit result object conversion" by definition. Thus,
99 ASL expressions that use these operators cannot be folded to a simple
100 Store operator because Store implements the implicit conversion. This
101 change uses the CopyObject operator for the ToXXXX operator folding
102 instead. CopyObject is defined to not implement implicit result
103 conversions and is thus appropriate for folding the ToXXXX operators.
105 iASL: Changed the severity of an error condition to a simple warning for
106 the case where a symbol is declared both locally and as an external
107 symbol. This accommodates existing ASL code.
109 AcpiExec: The -ep option to enable the new architecture for module-level
110 code has been removed. It is replaced by the -dp option which instead has
111 the opposite effect: it disables the new architecture (the default) and
112 enables the legacy architecture. When the legacy code is removed in the
113 future, the -dp option will be removed also.
115 ----------------------------------------
116 05 January 2018. Summary of changes for version 20180105:
119 1) ACPICA kernel-resident subsystem:
121 Updated all copyrights to 2018. This affects all source code modules.
123 Fixed a possible build error caused by an unresolved reference to the
124 AcpiUtSafeStrncpy function.
126 Removed NULL pointer arithmetic in the various pointer manipulation
127 macros. All "(void *) NULL" constructs are converted to "(void *) 0".
128 This eliminates warnings/errors in newer C compilers. Jung-uk Kim.
130 Added support for A32 ABI compilation, which uses the ILP32 model. Anuj
134 2) iASL Compiler/Disassembler and Tools:
136 ASLTS: Updated all copyrights to 2018.
138 Tools: Updated all signon copyrights to 2018.
140 AcpiXtract: Fixed a regression related to ACPI table signatures where the
141 signature was truncated to 3 characters (instead of 4).
143 AcpiExec: Restore the original terminal mode after the use of the -v and
146 ASLTS: Deployed the iASL __METHOD__ macro across the test suite.
148 ----------------------------------------
149 14 December 2017. Summary of changes for version 20171214:
152 1) ACPICA kernel-resident subsystem:
154 Fixed a regression in the external (public) AcpiEvaluateObjectTyped
155 interface where the optional "pathname" argument had inadvertently become
156 a required argument returning an error if omitted (NULL pointer
159 Fixed two possible memory leaks related to the recently developed "late
160 resolution" of reference objects within ASL Package Object definitions.
162 Added two recently defined _OSI strings: "Windows 2016" and "Windows
163 2017". Mario Limonciello.
165 Implemented and deployed a safer version of the C library function
166 strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the
167 creation of unterminated strings as a possible result of a standard
170 Cleaned up and restructured the global variable file (acglobal.h). There
171 are many changes, but no functional changes.
174 2) iASL Compiler/Disassembler and Tools:
176 iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the
177 optional OemData field at the end of the table was incorrectly required
178 for proper compilation. It is now correctly an optional field.
180 ASLTS: The entire suite was converted from standard ASL to the ASL+
181 language, using the ASL-to-ASL+ converter which is integrated into the
182 iASL compiler. A binary compare of all output files has verified the
183 correctness of the conversion.
185 iASL: Fixed the source code build for platforms where "char" is unsigned.
186 This affected the iASL lexer only. Jung-uk Kim.
188 ----------------------------------------
189 10 November 2017. Summary of changes for version 20171110:
192 1) ACPICA kernel-resident subsystem:
194 This release implements full support for ACPI 6.2A:
195 NFIT - Added a new subtable, "Platform Capabilities Structure"
196 No other changes to ACPICA were required, since ACPI 6.2A is primarily an
197 errata release of the specification.
199 Other ACPI table changes:
200 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo
201 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy
204 Utilities: Modified the string/integer conversion functions to use
205 internal 64-bit divide support instead of a native divide. On 32-bit
206 platforms, a 64-bit divide typically requires a library function which
207 may not be present in the build (kernel or otherwise).
209 Implemented a targeted error message for timeouts returned from the
210 Embedded Controller device driver. This is seen frequently enough to
211 special-case an AE_TIME returned from an EC operation region access:
212 "Timeout from EC hardware or EC device driver"
214 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all
215 runtime error messages have the identical prefix.
218 2) iASL Compiler/Disassembler and Tools:
220 AcpiXtract: Fixed a problem with table header detection within the
221 acpidump file. Processing a table could be ended early if a 0x40 (@)
222 appears in the original binary table, resulting in the @ symbol appearing
223 in the decoded ASCII field at the end of the acpidump text line. The
224 symbol caused acpixtract to incorrectly think it had reached the end of
225 the current table and the beginning of a new table.
227 AcpiXtract: Added an option (-f) to ignore some errors during table
228 extraction. This initial implementation ignores non-ASCII and non-
229 printable characters found in the acpidump text file.
231 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics
232 for ASLTS. This feature is used to track memory allocations from
233 different memory caches within the ACPICA code. At the end of an ASLTS
234 run, these memory statistics are recorded and stored in a log file.
236 Debugger (user-space version): Implemented a simple "Background" command.
237 Creates a new thread to execute a control method in the background, while
238 control returns to the debugger prompt to allow additional commands.
239 Syntax: Background <Namepath> [Arguments]
241 ----------------------------------------
242 29 September 2017. Summary of changes for version 20170929:
245 1) ACPICA kernel-resident subsystem:
247 Redesigned and implemented an improved ASL While() loop timeout
248 mechanism. This mechanism is used to prevent infinite loops in the kernel
249 AML interpreter caused by either non-responsive hardware or incorrect AML
250 code. The new implementation uses AcpiOsGetTimer instead of a simple
251 maximum loop count, and is thus more accurate and constant across
252 different machines. The default timeout is currently 30 seconds, but this
253 may be adjusted later.
255 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to
256 better reflect the new implementation of the loop timeout mechanism.
258 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support
259 and to fix an off-by-one error. Jung-uk Kim.
261 Fixed an EFI build problem by updating the makefiles to for a new file
262 that was added, utstrsuppt.c
265 2) iASL Compiler/Disassembler and Tools:
267 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This
268 includes support in the table disassembler, compiler, and template
271 iASL: Added an exception for an illegal type of recursive method
272 invocation. If a method creates named objects, the first recursive call
273 will fail at runtime. This change adds an error detection at compile time
274 to catch the problem up front. Note: Marking such a method as
275 "serialized" will not help with this problem, because the same thread can
276 acquire the method mutex more than once. Example compiler and runtime
286 Error 6152 - ^ Illegal recursive call to method
287 that creates named objects (MTH1)
289 Previous runtime exception:
290 ACPI Error: [INT1] Namespace lookup failure,
291 AE_ALREADY_EXISTS (20170831/dswload2-465)
293 iASL: Updated support for External() opcodes to improve namespace
294 management and error detection. These changes are related to issues seen
295 with multiple-segment namespace pathnames within External declarations,
298 External(\_SB.PCI0.GFX0, DeviceObj)
299 External(\_SB.PCI0.GFX0.ALSI)
301 iASL: Implemented support for multi-line error/warning messages. This
302 enables more detailed and helpful error messages as below, from the
303 initial deployment for the duplicate names error:
305 DSDT.iiii 1692: Device(PEG2) {
306 Error 6074 - ^ Name already exists in scope
309 Original name creation/declaration below:
310 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj)
312 AcpiXtract: Added additional flexibility to support differing input hex
313 dump formats. Specifically, hex dumps that contain partial disassembly
314 and/or comments within the ACPI table data definition. There exist some
315 dump utilities seen in the field that create this type of hex dump (such
316 as Simics). For example:
318 DSDT @ 0xdfffd0c0 (10999 bytes)
326 Creator_id 1280593481
327 Creator_revision 537399345
328 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00
330 2af0: 5f 4c 30 46 00 a4 01
332 Test suite: Miscellaneous changes/fixes:
333 More cleanup and simplification of makefiles
334 Continue compilation of test cases after a compile failure
335 Do not perform binary compare unless both files actually exist
337 iASL: Performed some code/module restructuring. Moved all memory
338 allocation functions to new modules. Two new files, aslallocate.c and
341 ----------------------------------------
342 31 August 2017. Summary of changes for version 20170831:
345 1) ACPICA kernel-resident subsystem:
347 Implemented internal support for full 64-bit addresses that appear in all
348 Generic Address Structure (GAS) structures. Previously, only the lower 32
349 bits were used. Affects the use of GAS structures in the FADT and other
350 tables, as well as the GAS structures passed to the AcpiRead and
351 AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
353 Added header support for the PDTT ACPI table (Processor Debug Trigger
354 Table). Full support in the iASL Data Table Compiler and disassembler is
358 2) iASL Compiler/Disassembler and Tools:
360 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
361 Properties Topology Table) where a flag bit was specified in the wrong
362 bit position ("Line Size Valid", bit 6).
364 iASL: Implemented support for Octal integer constants as defined by the
365 ASL language grammar, per the ACPI specification. Any integer constant
366 that starts with a zero is an octal constant. For example,
367 Store (037777, Local0) /* Octal constant */
368 Store (0x3FFF, Local0) /* Hex equivalent */
369 Store (16383, Local0) /* Decimal equivalent */
371 iASL: Improved overflow detection for 64-bit string conversions during
372 compilation of integer constants. "Overflow" in this case means a string
373 that represents an integer that is too large to fit into a 64-bit value.
374 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
375 the low-order 32 bits with a warning, as previously implemented. Several
376 new exceptions are defined that indicate a 64-bit overflow, as well as
377 the base (radix) that was used during the attempted conversion. Examples:
378 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
379 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
380 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
382 iASL: Added a warning for the case where a ResourceTemplate is declared
383 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
384 this case, the resulting template is created with a single END_TAG
385 descriptor, which is essentially useless.
387 iASL: Expanded the -vw option (ignore specific warnings/remarks) to
388 include compilation error codes as well.
390 ----------------------------------------
391 28 July 2017. Summary of changes for version 20170728:
394 1) ACPICA kernel-resident subsystem:
396 Fixed a regression seen with small resource descriptors that could cause
397 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
399 AML interpreter: Implemented a new feature that allows forward references
400 from individual named references within package objects that are
401 contained within blocks of "module-level code". This provides
402 compatibility with other ACPI implementations and supports existing
403 firmware that depends on this feature. Example:
406 If (ABCD) /* An If() at module-level */
408 Name (PKG1, Package()
410 INT1 /* Forward reference to object INT1
416 AML Interpreter: Fixed a problem with the Alias() operator where aliases
417 to some ASL objects were not handled properly. Objects affected are:
418 Mutex, Event, and OperationRegion.
420 AML Debugger: Enhanced to properly handle AML Alias objects. These
421 objects have one level of indirection which was not fully supported by
424 Table Manager: Added support to detect and ignore duplicate SSDTs within
425 the XSDT/RSDT. This error in the XSDT has been seen in the field.
427 EFI and EDK2 support:
428 Enabled /WX flag for MSVC builds
429 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
430 Added local support for 64-bit multiply and shift operations
431 Added support to compile acpidump.efi on Windows
432 Added OSL function stubs for interfaces not used under EFI
434 Added additional support for the _DMA predefined name. _DMA returns a
435 buffer containing a resource template. This change add support within the
436 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
437 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
440 2) iASL Compiler/Disassembler and Tools:
442 iASL: Fixed a problem where the internal input line buffer(s) could
443 overflow if there are very long lines in the input ASL source code file.
444 Implemented buffer management that automatically increases the size of
445 the buffers as necessary.
447 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
448 errors. If the specified exception is not raised during compilation, the
449 compiler emits an error. This is intended to support the ASL test suite,
450 but may be useful in other contexts.
452 iASL: Implemented a new predefined macro, __METHOD__, which returns a
453 string containing the name of the current control method that is being
456 iASL: Implemented debugger and table compiler support for the SDEI ACPI
457 table (Software Delegated Exception Interface). James Morse
458 <james.morse@arm.com>
460 Unix/Linux makefiles: Added an option to disable compile optimizations.
461 The disable occurs when the NOOPT flag is set to TRUE.
462 theracermaster@gmail.com
464 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
465 when there are different tables for 32-bit versus 64-bit.
467 Enhanced error reporting for the ASL test suite (ASLTS) by removing
468 unnecessary/verbose text, and emit the actual line number where an error
469 has occurred. These changes are intended to improve the usefulness of the
472 ----------------------------------------
473 29 June 2017. Summary of changes for version 20170629:
476 1) ACPICA kernel-resident subsystem:
478 Tables: Implemented a deferred ACPI table verification. This is useful
479 for operating systems where the tables cannot be verified in the early
480 initialization stage due to early memory mapping limitations on some
481 architectures. Lv Zheng.
483 Tables: Removed the signature validation for dynamically loaded tables.
484 Provides compatibility with other ACPI implementations. Previously, only
485 SSDT tables were allowed, as per the ACPI specification. Now, any table
486 signature can be used via the Load() operator. Lv Zheng.
488 Tables: Fixed several mutex issues that could cause errors during table
489 acquisition. Lv Zheng.
491 Tables: Fixed a problem where an ACPI warning could be generated if a
492 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
494 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
495 AcpiPutTable interfaces. This applies to the "late stage" table loading
496 when the use of AcpiPutTable is no longer required (since the system
497 memory manager is fully running and available). Lv Zheng.
499 Fixed/Reverted a regression during processing of resource descriptors
500 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
501 exception in this case.
503 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
504 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
506 Interpreter: Fixed a possible fault if an Alias operator with an invalid
507 or duplicate target is encountered during Alias creation in
508 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
510 Added an option to use designated initializers for function pointers.
511 Kees Cook <keescook@google.com>
514 2) iASL Compiler/Disassembler and Tools:
516 iASL: Allow compilation of External declarations with target pathnames
517 that refer to existing named objects within the table. Erik Schmauss.
519 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
520 FieldUnit name also is declared via External in the same table. Erik
523 iASL: Allow existing scope names within pathnames used in External
524 statements. For example:
525 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
528 iASL: IORT ACPI table: Implemented changes required to decode the new
529 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
530 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
532 Disassembler: Don't abort disassembly on errors from External()
533 statements. Erik Schmauss.
535 Disassembler: fixed a possible fault when one of the Create*Field
536 operators references a Resource Template. ACPICA Bugzilla 1396.
538 iASL: In the source code, resolved some naming inconsistences across the
539 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
540 Adds a new file, aslparseop.c
542 ----------------------------------------
543 31 May 2017. Summary of changes for version 20170531:
548 The ACPI specification version 6.2 has been released and is available at
549 http://uefi.org/specifications
551 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
552 are summarized below.
554 New ACPI tables (Table Compiler/Disassembler/Templates):
555 HMAT (Heterogeneous Memory Attributes Table)
556 WSMT (Windows SMM Security Mitigation Table)
557 PPTT (Processor Properties Topology Table)
559 New subtables for existing ACPI tables:
560 HEST (New subtable, Arch-deferred machine check)
561 SRAT (New subtable, Arch-specific affinity structure)
562 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
564 Simple updates for existing ACPI tables:
565 BGRT (two new flag bits)
566 HEST (New bit defined for several subtables, GHES_ASSIST)
568 New Resource Descriptors and Resource macros (Compiler/Disassembler):
574 New type for hardware error notification (section 18.3.2.9)
576 New predefined names/methods (Compiler/Interpreter):
577 _HMA (Heterogeneous Memory Attributes)
578 _LSI (Label Storage Information)
579 _LSR (Label Storage Read)
580 _LSW (Label Storage Write)
582 ASL grammar/macro changes (Compiler):
583 For() ASL macro, implemented with the AML while operator
584 Extensions to Concatenate operator
585 Support for multiple definition blocks in same ASL file
586 Clarification for Buffer operator
587 Allow executable AML code underneath all scopes (Devices, etc.)
588 Clarification/change for the _OSI return value
589 ASL grammar update for reference operators
590 Allow a zero-length string for AML filename in DefinitionBlock
593 New device object notification value
594 Remove a notify value (0x0C) for graceful shutdown
595 New UUIDs for processor/cache properties and
596 physical package property
597 New _HID, ACPI0014 (Wireless Power Calibration Device)
600 1) ACPICA kernel-resident subsystem:
602 Added support to disable ACPI events on hardware-reduced platforms.
603 Eliminates error messages of the form "Could not enable fixed event". Lv
606 Fixed a problem using Device/Thermal objects with the ObjectType and
607 DerefOf ASL operators. This support had not been fully/properly
610 Fixed a problem where if a Buffer object containing a resource template
611 was longer than the actual resource template, an error was generated --
612 even though the AML is legal. This case has been seen in the field.
614 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
615 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
617 Added header file changes for the TPM2 ACPI table. Update to new version
618 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
620 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
621 These interfaces are intended to be used only in conjunction with the
622 predefined _DLM method (Device Lock Method). "This object appears in a
623 device scope when AML access to the device must be synchronized with the
626 Example Code and Data Size: These are the sizes for the OS-independent
627 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
628 debug version of the code includes the debug output trace mechanism and
629 has a much larger code and data size.
632 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
633 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
635 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
636 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
639 2) iASL Compiler/Disassembler and Tools:
641 iASL: Fixed a problem where an External() declaration could not refer to
642 a Field Unit. Erik Schmauss.
644 Disassembler: Improved support for the Switch/Case operators. This
645 feature will disassemble AML code back to the original Switch operators
646 when possible, instead of an If..Else sequence. David Box
648 iASL and disassembler: Improved the handling of multiple extraneous
649 parentheses for both ASL input and disassembled ASL output.
651 Improved the behavior of the iASL compiler and disassembler to detect
652 improper use of external declarations
654 Disassembler: Now aborts immediately upon detection of an unknown AML
655 opcode. The AML parser has no real way to recover from this, and can
656 result in the creation of an ill-formed parse tree that causes errors
657 later during the disassembly.
659 All tools: Fixed a problem where the Unix application OSL did not handle
660 control-c correctly. For example, a control-c could incorrectly wake the
663 AcpiExec: Improved the Control-C handling and added a handler for
664 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
667 Reduced the verbosity of the generic unix makefiles. Previously, each
668 compilation displayed the full set of compiler options. This has been
669 eliminated as the options are easily inspected within the makefiles. Each
670 compilation now results in a single line of output.
672 ----------------------------------------
673 03 March 2017. Summary of changes for version 20170303:
678 The licensing information at the start of each source code module has
679 been updated. In addition to the Intel license, the dual GPLv2/BSD
680 license has been added for completeness. Now, a single version of the
681 source code should be suitable for all ACPICA customers. This is the
682 major change for this release since it affects all source code modules.
685 1) ACPICA kernel-resident subsystem:
687 Fixed two issues with the common asltypes.h header that could cause
688 problems in some environments: (Kim Jung-uk)
689 Removed typedef for YY_BUFFER_STATE ?
690 Fixes an error with earlier versions of Flex.
691 Removed use of FILE typedef (which is only defined in stdio.h)
694 2) iASL Compiler/Disassembler and Tools:
696 Disassembler: fixed a regression introduced in 20170224. A fix for a
697 memory leak related to resource descriptor tags (names) could fault when
698 the disassembler was generated with 64-bit compilers.
700 The ASLTS test suite has been updated to implement a new testing
701 architecture. During generation of the suite from ASL source, both the
702 ASL and ASL+ compilers are now validated, as well as the disassembler
703 itself (Erik Schmauss). The architecture executes as follows:
705 For every ASL source module:
706 Compile (legacy ASL compilation)
707 Disassemble the resulting AML to ASL+ source code
708 Compile the new ASL+ module
709 Perform a binary compare on the legacy AML and the new ASL+ AML
710 The ASLTS suite then executes normally using the AML binaries.
712 ----------------------------------------
713 24 February 2017. Summary of changes for version 20170224:
716 1) ACPICA kernel-resident subsystem:
718 Interpreter: Fixed two issues with the control method return value auto-
719 repair feature, where an attempt to double-delete an internal object
720 could result in an ACPICA warning (for _CID repair and others). No fault
721 occurs, however, because the attempted deletion (actually a release to an
722 internal cache) is detected and ignored via object poisoning.
724 Debugger: Fixed an AML interpreter mutex issue during the single stepping
725 of control methods. If certain debugger commands are executed during
726 stepping, a mutex aquire/release error could occur. Lv Zheng.
728 Fixed some issues generating ACPICA with the Intel C compiler by
729 restoring the original behavior and compiler-specific include file in
732 Example Code and Data Size: These are the sizes for the OS-independent
733 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
734 debug version of the code includes the debug output trace mechanism and
735 has a much larger code and data size.
738 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
739 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
741 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
742 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
745 2) iASL Compiler/Disassembler and Tools:
747 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
748 tool has been designed, implemented, and included in this release. The
749 key feature of this utility is that the original comments within the
750 input ASL file are preserved during the conversion process, and included
751 within the converted ASL+ file -- thus creating a transparent conversion
752 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
754 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
757 iASL/Disassembler: Improved the detection and correct disassembly of
758 Switch/Case operators. This feature detects sequences of if/elseif/else
759 operators that originated from ASL Switch/Case/Default operators and
760 emits the original operators. David Box.
762 iASL: Improved the IORT ACPI table support in the following areas. Lv
764 Clear MappingOffset if the MappingCount is zero.
765 Fix the disassembly of the SMMU GSU interrupt offset.
766 Update the template file for the IORT table.
768 Disassembler: Enhanced the detection and disassembly of resource
769 template/descriptor within a Buffer object. An EndTag descriptor is now
770 required to have a zero second byte, since all known ASL compilers emit
771 this. This helps eliminate incorrect decisions when a buffer is
772 disassembled (false positives on resource templates).
774 ----------------------------------------
775 19 January 2017. Summary of changes for version 20170119:
778 1) General ACPICA software:
780 Entire source code base: Added the 2017 copyright to all source code
781 legal/licensing module headers and utility/tool signons. This includes
782 the standard Linux dual-license header. This affects virtually every file
783 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
784 the ACPICA test suite.
787 2) iASL Compiler/Disassembler and Tools:
789 iASL: Removed/fixed an inadvertent remark when a method argument
790 containing a reference is used as a target operand within the method (and
791 never used as a simple argument), as in the example below. Jeffrey Hugo.
793 dsdt.asl 1507: Store(0x1, Arg0)
794 Remark 2146 - ^ Method Argument is never used (Arg0)
796 All tools: Removed the bit width of the compiler that generated the tool
797 from the common signon for all user space tools. This proved to be
798 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
799 from the generic makefiles (Thomas Petazzoni). Example below.
802 ASL+ Optimizing Compiler version 20170119-32
803 ASL+ Optimizing Compiler version 20170119-64
806 ASL+ Optimizing Compiler version 20170119
808 ----------------------------------------
809 22 December 2016. Summary of changes for version 20161222:
812 1) ACPICA kernel-resident subsystem:
814 AML Debugger: Implemented a new mechanism to simplify and enhance
815 debugger integration into all environments, including kernel debuggers
816 and user-space utilities, as well as remote debug services. This
817 mechanism essentially consists of new OSL interfaces to support debugger
818 initialization/termination, as well as wait/notify interfaces to perform
819 the debugger handshake with the host. Lv Zheng.
822 AcpiOsInitializeDebugger (void)
823 AcpiOsTerminateDebugger (void)
824 AcpiOsWaitCommandReady (void)
825 AcpiOsNotifyCommandComplete (void)
827 New OS services layer:
828 osgendbg.c -- Example implementation, and used for AcpiExec
830 Update for Generic Address Space (GAS) support: Although the AccessWidth
831 and/or BitOffset fields of the GAS are not often used, this change now
832 fully supports these fields. This affects the internal support for FADT
833 registers, registers in other ACPI data tables, and the AcpiRead and
834 AcpiWrite public interfaces. Lv Zheng.
836 Sleep support: In order to simplify integration of ACPI sleep for the
837 various host operating systems, a new OSL interface has been introduced.
838 AcpiOsEnterSleep allows the host to perform any required operations
839 before the final write to the sleep control register(s) is performed by
843 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
845 Called from these internal interfaces:
849 EFI support: Added a very small EFI/ACPICA example application. Provides
850 a simple demo for EFI integration, as well as assisting with resolution
851 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
853 source/tools/efihello/efihello.c
855 Local C library: Implemented several new functions to enhance ACPICA
856 portability, for environments where these clib functions are not
857 available (such as EFI). Lv Zheng:
864 Fixed a regression where occasionally a valid resource descriptor was
865 incorrectly detected as invalid at runtime, and a
866 AE_AML_NO_RESOURCE_END_TAG was returned.
868 Fixed a problem with the recently implemented support that enables
869 control method invocations as Target operands to many ASL operators.
870 Warnings of this form: "Needed type [Reference], found [Processor]" were
871 seen at runtime for some method invocations.
873 Example Code and Data Size: These are the sizes for the OS-independent
874 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
875 debug version of the code includes the debug output trace mechanism and
876 has a much larger code and data size.
879 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
880 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
882 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
883 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
886 2) iASL Compiler/Disassembler and Tools:
888 Disassembler: Enhanced output by adding the capability to detect and
889 disassemble ASL Switch/Case statements back to the original ASL source
890 code instead of if/else blocks. David Box.
892 AcpiHelp: Split a large file into separate files based upon
893 functionality/purpose. New files are:
897 ----------------------------------------
898 17 November 2016. Summary of changes for version 20161117:
901 1) ACPICA kernel-resident subsystem:
903 Table Manager: Fixed a regression introduced in 20160729, "FADT support
904 cleanup". This was an attempt to remove all references in the source to
905 the FADT version 2, which never was a legal version number. It was
906 skipped because it was an early version of 64-bit support that was
907 eventually abandoned for the current 64-bit support.
909 Interpreter: Fixed a problem where runtime implicit conversion was
910 incorrectly disabled for the ASL operators below. This brings the
911 behavior into compliance with the ACPI specification:
919 Table Manager: Added a new public interface, AcpiPutTable, used to
920 release and free an ACPI table returned by AcpiGetTable and related
921 interfaces. Lv Zheng.
923 Example Code and Data Size: These are the sizes for the OS-independent
924 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
925 debug version of the code includes the debug output trace mechanism and
926 has a much larger code and data size.
929 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
930 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
932 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
933 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
936 2) iASL Compiler/Disassembler and Tools:
938 Disassembler: Fixed a regression for disassembly of Resource Template.
939 Detection of templates in the AML stream missed some types of templates.
941 iASL: Fixed a problem where an Access Size error was returned for the PCC
942 address space when the AccessSize of the GAS register is greater than a
945 iASL: Implemented several grammar changes for the operators below. These
946 changes are slated for the next version of the ACPI specification:
947 RefOf - Disallow method invocation as an operand
948 CondRefOf - Disallow method invocation as an operand
949 DerefOf - Disallow operands that use the result from operators
951 do not return a reference (Changed TermArg to
954 iASL: Control method invocations are now allowed for Target operands, as
955 per the ACPI specification. Removed error for using a control method
956 invocation as a Target operand.
958 Disassembler: Improved detection of Resource Templates, Unicode, and
959 Strings within Buffer objects. These subtypes do not contain a specific
960 opcode to indicate the originating ASL code, and they must be detected by
961 other means within the disassembler.
963 iASL: Implemented an optimization improvement for 32-bit ACPI tables
964 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
965 only after 64-bit to 32-bit truncation. A truncation warning message is
966 still emitted, however.
968 AcpiXtract: Implemented handling for both types of line terminators (LF
969 or CR/LF) so that it can accept AcpiDump output files from any system.
972 AcpiBin: Added two new options for comparing AML files:
973 -a: compare and display ALL mismatches
974 -o: start compare at this offset into the second file
976 ----------------------------------------
977 30 September 2016. Summary of changes for version 20160930:
980 1) ACPICA kernel-resident subsystem:
982 Fixed a regression in the internal AcpiTbFindTable function where a non
983 AE_OK exception could inadvertently be returned even if the function did
984 not fail. This problem affects the following operators:
988 Fixed a regression in the LoadTable operator where a load to any
989 namespace location other than the root no longer worked properly.
991 Increased the maximum loop count value that will result in the
992 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
993 prevent infinite loops within the AML interpreter and thus the host OS
994 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
997 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
998 acpixf.h file. This allows hosts to easily configure the maximum loop
1001 Removed an illegal character in the strtoul64.c file. This character
1002 caused errors with some C compilers.
1004 Example Code and Data Size: These are the sizes for the OS-independent
1005 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1006 debug version of the code includes the debug output trace mechanism and
1007 has a much larger code and data size.
1010 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
1011 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
1013 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
1014 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1017 2) iASL Compiler/Disassembler and Tools:
1019 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
1020 the simpler ASL ElseIf keyword. During the conversion, a trailing If
1021 block could be lost and missing from the disassembled output.
1023 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
1024 the missing rule caused a parse error when using the Index operator as an
1025 operand to ObjectType. This construct now compiles properly. Example:
1026 ObjectType(PKG1[4]).
1028 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
1029 option). Previously, unresolved symbols could cause a protection fault.
1030 Such symbols are now marked as unresolved in the map file.
1032 iASL: Implemented support to allow control method invocations as an
1033 operand to the ASL DeRefOf operator. Example:
1034 DeRefOf(MTH1(Local0))
1036 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
1037 possible _PLD buffer now includes examination of both the normal buffer
1038 length (16 or 20) as well as the surrounding AML package length.
1040 Disassembler: Fixed a problem with the decoding of complex expressions
1041 within the Divide operator for ASL+. For the case where both the quotient
1042 and remainder targets are specified, the entire statement cannot be
1043 disassembled. Previously, the output incorrectly contained a mix of ASL-
1044 and ASL+ operators. This mixed statement causes a syntax error when
1046 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
1048 Divide (INT1 + 6, 128, RSLT, QUOT)
1050 iASL/Tools: Added support to process AML and non-AML ACPI tables
1051 consistently. For the disassembler and AcpiExec, allow all types of ACPI
1052 tables (AML and data tables). For the iASL -e option, allow only AML
1055 ----------------------------------------
1056 31 August 2016. Summary of changes for version 20160831:
1059 1) ACPICA kernel-resident subsystem:
1061 Improve support for the so-called "module-level code", which is defined
1062 to be math, logical and control AML opcodes that appear outside of any
1063 control method. This change improves the support by adding more opcodes
1064 that can be executed in the manner. Some other issues have been solved,
1065 and the ASL grammar changes to support such code under all scope
1066 operators (Device, etc.) are complete. Lv Zheng.
1068 UEFI support: these OSL functions have been implemented. This is an
1069 additional step toward supporting the AcpiExec utility natively (with
1070 full hardware access) under UEFI. Marcelo Ferreira.
1071 AcpiOsReadPciConfiguration
1072 AcpiOsWritePciConfiguration
1074 Fixed a possible mutex error during control method auto-serialization. Lv
1077 Updated support for the Generic Address Structure by fully implementing
1078 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
1081 Updated the return value for the internal _OSI method. Instead of
1082 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
1083 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
1084 implementations, and will be reflected and clarified in the next version
1085 of the ACPI specification.
1087 Implemented two new table events that can be passed to an ACPICA table
1088 handler. These events are used to indicate a table installation or
1089 uninstallation. These events are used in addition to existed table load
1090 and unload events. Lv Zheng.
1092 Implemented a cleanup for all internal string-to-integer conversions.
1093 Consolidate multiple versions of this functionality and limit possible
1094 bases to either 10 or 16 to simplify the code. Adds a new file,
1097 Cleanup the inclusion order of the various compiler-specific headers.
1098 This simplifies build configuration management. The compiler-specific
1099 headers are now split out from the host-specific headers. Lv Zheng.
1101 Example Code and Data Size: These are the sizes for the OS-independent
1102 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1103 debug version of the code includes the debug output trace mechanism and
1104 has a much larger code and data size.
1107 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
1108 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1111 2) iASL Compiler/Disassembler and Tools:
1113 iASL/AcpiExec: Added a command line option to display the build date/time
1114 of the tool (-vd). This can be useful to verify that the correct version
1115 of the tools are being used.
1117 AML Debugger: Implemented a new subcommand ("execute predef") to execute
1118 all predefined control methods and names within the current namespace.
1119 This can be useful for debugging problems with ACPI tables and the ACPI
1122 ----------------------------------------
1123 29 July 2016. Summary of changes for version 20160729:
1126 1) ACPICA kernel-resident subsystem:
1128 Implemented basic UEFI support for the various ACPICA tools. This
1130 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
1131 2) Support to obtain the ACPI tables on UEFI.
1132 3) Local implementation of required C library functions not available on
1134 4) A front-end (main) function for the tools for UEFI-related
1137 The initial deployment of this support is the AcpiDump utility executing
1138 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
1139 Current environments supported are Linux/Unix. MSVC generation is not
1140 supported at this time. See the generate/efi/README file for build
1141 instructions. Lv Zheng.
1143 Future plans include porting the AcpiExec utility to execute natively on
1144 the platform with I/O and memory access. This will allow viewing/dump of
1145 the platform namespace and native execution of ACPI control methods that
1146 access the actual hardware. To fully implement this support, the OSL
1147 functions below must be implemented with UEFI interfaces. Any community
1148 help in the implementation of these functions would be appreciated:
1153 AcpiOsReadPciConfiguration
1154 AcpiOsWritePciConfiguration
1156 Restructured and standardized the C library configuration for ACPICA,
1157 resulting in the various configuration options below. This includes a
1158 global restructuring of the compiler-dependent and platform-dependent
1159 include files. These changes may affect the existing platform-dependent
1160 configuration files on some hosts. Lv Zheng.
1162 The current C library configuration options appear below. For any issues,
1163 it may be helpful to examine the existing compiler-dependent and
1164 platform-dependent files as examples. Lv Zheng.
1167 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1169 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1170 2) Unix/Windows/BSD applications:
1171 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
1173 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1174 3) UEFI applications:
1175 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1177 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
1178 4) UEFI applications (EDK2/StdLib):
1179 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
1180 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
1183 AML interpreter: "module-level code" support. Allows for execution of so-
1184 called "executable" AML code (math/logical operations, etc.) outside of
1185 control methods not just at the module level (top level) but also within
1186 any scope declared outside of a control method - Scope{}, Device{},
1187 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
1189 Simplified the configuration of the "maximum AML loops" global option by
1190 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
1191 modified at runtime.
1194 Example Code and Data Size: These are the sizes for the OS-independent
1195 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1196 debug version of the code includes the debug output trace mechanism and
1197 has a much larger code and data size.
1200 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
1201 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
1204 2) iASL Compiler/Disassembler and Tools:
1206 iASL: Add full support for the RASF ACPI table (RAS Features Table).
1207 Includes disassembler, data table compiler, and header support.
1209 iASL Expand "module-level code" support. Allows for
1210 compilation/disassembly of so-called "executable" AML code (math/logical
1211 operations, etc.) outside of control methods not just at the module level
1212 (top level) but also within any scope declared outside of a control
1213 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
1216 AcpiDump: Added support for dumping all SSDTs on newer versions of
1217 Windows. These tables are now easily available -- SSDTs are not available
1218 through the registry on older versions.
1220 ----------------------------------------
1221 27 May 2016. Summary of changes for version 20160527:
1224 1) ACPICA kernel-resident subsystem:
1226 Temporarily reverted the new arbitrary bit length/alignment support in
1227 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
1228 a number of regressions with the new code that need to be fully resolved
1229 and tested before this support can be finally integrated into ACPICA.
1230 Apologies for any inconveniences these issues may have caused.
1232 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
1233 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
1234 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
1236 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
1237 option. Adds a new return macro, return_STR. Junk-uk Kim.
1239 Example Code and Data Size: These are the sizes for the OS-independent
1240 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1241 debug version of the code includes the debug output trace mechanism and
1242 has a much larger code and data size.
1245 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
1246 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1248 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1249 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
1251 ----------------------------------------
1252 22 April 2016. Summary of changes for version 20160422:
1254 1) ACPICA kernel-resident subsystem:
1256 Fixed a regression in the GAS (generic address structure) arbitrary bit
1257 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
1258 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
1260 ACPI 6.0: Added support for new/renamed resource macros. One new argument
1261 was added to each of these macros, and the original name has been
1262 deprecated. The AML disassembler will always disassemble to the new
1263 names. Support for the new macros was added to iASL, disassembler,
1264 resource manager, and the acpihelp utility. ACPICA BZ 1274.
1266 I2cSerialBus -> I2cSerialBusV2
1267 SpiSerialBus -> SpiSerialBusV2
1268 UartSerialBus -> UartSerialBusV2
1270 ACPI 6.0: Added support for a new integer field that was appended to the
1271 package object returned by the _BIX method. This adds iASL compile-time
1272 and AML runtime error checking. ACPICA BZ 1273.
1274 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
1275 Subspace Type2" (Headers, Disassembler, and data table compiler).
1277 Example Code and Data Size: These are the sizes for the OS-independent
1278 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1279 debug version of the code includes the debug output trace mechanism and
1280 has a much larger code and data size.
1283 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1284 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1286 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1287 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1290 2) iASL Compiler/Disassembler and Tools:
1292 iASL: Implemented an ASL grammar extension to allow/enable executable
1293 "module-level code" to be created and executed under the various
1294 operators that create new scopes. This type of AML code is already
1295 supported in all known AML interpreters, and the grammar change will
1296 appear in the next version of the ACPI specification. Simplifies the
1297 conditional runtime creation of named objects under these object types:
1305 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
1306 ease-of-use to the ASL language. The syntax is similar to the
1307 corresponding C operator, and is implemented with the existing AML While
1308 opcode -- thus requiring no changes to existing AML interpreters.
1310 For (Initialize, Predicate, Update) {TermList}
1315 Initializer // Nothing | TermArg => ComputationalData
1316 Predicate // Nothing | TermArg => ComputationalData
1317 Update // Nothing | TermArg => ComputationalData
1321 iASL: The _HID/_ADR detection and validation has been enhanced to search
1322 under conditionals in order to allow these objects to be conditionally
1325 iASL: Fixed several issues with the constant folding feature. The
1326 improvement allows better detection and resolution of statements that can
1327 be folded at compile time. ACPICA BZ 1266.
1329 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
1330 conversion to the ASL ElseIf operator where incorrect ASL code could be
1333 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
1334 sometimes an extra (and extraneous) set of parentheses were emitted for
1335 some combinations of operators. Although this did not cause any problems
1336 with recompilation of the disassembled code, it made the code more
1337 difficult to read. David Box. ACPICA BZ 1231.
1339 iASL: Changed to ignore the unreferenced detection for predefined names
1340 of resource descriptor elements, when the resource descriptor is
1341 created/defined within a control method.
1343 iASL: Disassembler: Fix a possible fault with externally declared Buffer
1346 ----------------------------------------
1347 18 March 2016. Summary of changes for version 20160318:
1349 1) ACPICA kernel-resident subsystem:
1351 Added support for arbitrary bit lengths and bit offsets for registers
1352 defined by the Generic Address Structure. Previously, only aligned bit
1353 lengths of 8/16/32/64 were supported. This was sufficient for many years,
1354 but recently some machines have been seen that require arbitrary bit-
1355 level support. ACPICA BZ 1240. Lv Zheng.
1357 Fixed an issue where the \_SB._INI method sometimes must be evaluated
1358 before any _REG methods are evaluated. Lv Zheng.
1360 Implemented several changes related to ACPI table support
1361 (Headers/Disassembler/TableCompiler):
1362 NFIT: For ACPI 6.1, updated to add some additional new fields and
1364 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
1366 DMAR: Added new constants per the 10/2014 DMAR spec.
1367 IORT: Added new subtable per the 10/2015 IORT spec.
1368 HEST: For ACPI 6.1, added new constants and new subtable.
1369 DBG2: Added new constants per the 12/2015 DBG2 spec.
1370 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
1372 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
1374 Updated header support for the DMAR table to match the current version of
1377 Added extensions to the ASL Concatenate operator to allow any ACPI object
1378 to be passed as an operand. Any object other than Integer/String/Buffer
1379 simply returns a string containing the object type. This extends the
1380 usefulness of the Printf macros. Previously, Concatenate would abort the
1381 control method if a non-data object was encountered.
1383 ACPICA source code: Deployed the C "const" keyword across the source code
1384 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
1386 Example Code and Data Size: These are the sizes for the OS-independent
1387 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1388 debug version of the code includes the debug output trace mechanism and
1389 has a much larger code and data size.
1392 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1393 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1395 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1396 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1399 2) iASL Compiler/Disassembler and Tools:
1401 iASL/Disassembler: Improved the heuristic used to determine the number of
1402 arguments for an externally defined control method (a method in another
1403 table). Although this is an improvement, there is no deterministic way to
1404 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1405 will completely solve this problem as it is deployed (automatically) in
1408 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1409 statements that could cause errors when the disassembled file is
1410 compiled. ACPICA BZ 1243. David Box.
1412 iASL: Fixed a regression caused by the merger of the two versions of the
1413 local strtoul64. Because of a dependency on a global variable, strtoul64
1414 could return an error for integers greater than a 32-bit value. ACPICA BZ
1417 iASL: Fixed a regression where a fault could occur for an ASL Return
1418 statement if it invokes a control method that is not resolved. ACPICA BZ
1421 AcpiXtract: Improved input file validation: detection of binary files and
1422 non-acpidump text files.
1424 ----------------------------------------
1425 12 February 2016. Summary of changes for version 20160212:
1427 1) ACPICA kernel-resident subsystem:
1429 Implemented full support for the ACPI 6.1 specification (released in
1430 January). This version of the specification is available at:
1431 http://www.uefi.org/specifications
1433 Only a relatively small number of changes were required in ACPICA to
1434 support ACPI 6.1, in these areas:
1435 - New predefined names
1437 - A new subtable for HEST
1438 - A few other header changes for new values
1440 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1441 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1443 Reverted a change made in version 20151218 which enabled method
1444 invocations to be targets of various ASL operators (SuperName and Target
1445 grammar elements). While the new behavior is supported by the ACPI
1446 specification, other AML interpreters do not support this behavior and
1447 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1448 this support. Therefore, the change was reverted to the original ACPICA
1451 ACPICA now supports the GCC 6 compiler.
1453 Current Release: (Note: build changes increased sizes)
1454 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1455 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1457 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1458 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1461 2) iASL Compiler/Disassembler and Tools:
1463 Completed full support for the ACPI 6.0 External() AML opcode. The
1464 compiler emits an external AML opcode for each ASL External statement.
1465 This opcode is used by the disassembler to assist with the disassembly of
1466 external control methods by specifying the required number of arguments
1467 for the method. AML interpreters do not use this opcode. To ensure that
1468 interpreters do not even see the opcode, a block of one or more external
1469 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1470 commonly deployed in BIOS code, the ability of disassemblers to correctly
1471 disassemble AML code will be greatly improved. David Box.
1473 iASL: Implemented support for an optional cross-reference output file.
1474 The -lx option will create a the cross-reference file with the suffix
1475 "xrf". Three different types of cross-reference are created in this file:
1476 - List of object references made from within each control method
1477 - Invocation (caller) list for each user-defined control method
1478 - List of references to each non-method object in the namespace
1480 iASL: Method invocations as ASL Target operands are now disallowed and
1481 flagged as errors in preparation for ACPI 6.2 (see the description of the
1484 ----------------------------------------
1485 8 January 2016. Summary of changes for version 20160108:
1487 1) ACPICA kernel-resident subsystem:
1489 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1490 copyright to all source code module headers and utility/tool signons.
1491 This includes the standard Linux dual-license header. This affects
1492 virtually every file in the ACPICA core subsystem, iASL compiler, all
1493 ACPICA utilities, and the ACPICA test suite.
1495 Fixed a regression introduced in version 20151218 concerning the
1496 execution of so-called module-level ASL/AML code. Namespace objects
1497 created under a module-level If() construct were not properly/fully
1498 entered into the namespace and could cause an interpreter fault when
1501 Example Code and Data Size: These are the sizes for the OS-independent
1502 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1503 debug version of the code includes the debug output trace mechanism and
1504 has a much larger code and data size.
1507 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1508 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1510 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1511 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1514 2) iASL Compiler/Disassembler and Tools:
1516 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1517 descriptors. The _PIN field name was incorrectly defined to be an array
1518 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1519 would cause incorrect bit width warnings when using Word (16-bit) fields
1520 to access the descriptors.
1523 ----------------------------------------
1524 18 December 2015. Summary of changes for version 20151218:
1526 1) ACPICA kernel-resident subsystem:
1528 Implemented per-AML-table execution of "module-level code" as individual
1529 ACPI tables are loaded into the namespace during ACPICA initialization.
1530 In other words, any module-level code within an AML table is executed
1531 immediately after the table is loaded, instead of batched and executed
1532 after all of the tables have been loaded. This provides compatibility
1533 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1536 To fully support the feature above, the default operation region handlers
1537 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1538 installed before any ACPI tables are loaded. This enables module-level
1539 code to access these address spaces during the table load and module-
1540 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1543 Implemented several changes to the internal _REG support in conjunction
1544 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1545 utilities for the changes above. Although these tools were changed, host
1546 operating systems that simply use the default handlers for SystemMemory,
1547 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1549 For example, in the code below, DEV1 is conditionally added to the
1550 namespace by the DSDT via module-level code that accesses an operation
1551 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1552 created immediately after the DSDT is loaded in order for the SSDT to
1553 successfully reference DEV1. Previously, this code would cause an
1554 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1555 fully supported by ACPICA.
1557 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1559 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1560 Field (OPR1, AnyAcc, NoLock, Preserve)
1571 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1573 External (\DEV1, DeviceObj)
1579 Fixed an AML interpreter problem where control method invocations were
1580 not handled correctly when the invocation was itself a SuperName argument
1581 to another ASL operator. In these cases, the method was not invoked.
1582 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1587 Decrement, Increment
1590 Signal, Release, Reset
1593 Implemented automatic String-to-ObjectReference conversion support for
1594 packages returned by predefined names (such as _DEP). A common BIOS error
1595 is to add double quotes around an ObjectReference namepath, which turns
1596 the reference into an unexpected string object. This support detects the
1597 problem and corrects it before the package is returned to the caller that
1598 invoked the method. Lv Zheng.
1600 Implemented extensions to the Concatenate operator. Concatenate now
1601 accepts any type of object, it is not restricted to simply
1602 Integer/String/Buffer. For objects other than these 3 basic data types,
1603 the argument is treated as a string containing the name of the object
1604 type. This expands the utility of Concatenate and the Printf/Fprintf
1605 macros. ACPICA BZ 1222.
1607 Cleaned up the output of the ASL Debug object. The timer() value is now
1608 optional and no longer emitted by default. Also, the basic data types of
1609 Integer/String/Buffer are simply emitted as their values, without a data
1610 type string -- since the data type is obvious from the output. ACPICA BZ
1613 Example Code and Data Size: These are the sizes for the OS-independent
1614 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1615 debug version of the code includes the debug output trace mechanism and
1616 has a much larger code and data size.
1619 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1620 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1622 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1623 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1626 2) iASL Compiler/Disassembler and Tools:
1628 iASL: Fixed some issues with the ASL Include() operator. This operator
1629 was incorrectly defined in the iASL parser rules, causing a new scope to
1630 be opened for the code within the include file. This could lead to
1631 several issues, including allowing ASL code that is technically illegal
1632 and not supported by AML interpreters. Note, this does not affect the
1633 related #include preprocessor operator. ACPICA BZ 1212.
1635 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1636 operator is essentially an ASL macro since there is no AML opcode
1637 associated with it. The code emitted by the iASL compiler for ElseIf is
1638 an Else opcode followed immediately by an If opcode. The disassembler
1639 will now emit an ElseIf if it finds an Else immediately followed by an
1640 If. This simplifies the decoded ASL, especially for deeply nested
1641 If..Else and large Switch constructs. Thus, the disassembled code more
1642 closely follows the original source ASL. ACPICA BZ 1211. Example:
1654 ElseIf (Arg0 == 0x02)
1659 AcpiExec: Added support for the new module level code behavior and the
1660 early region installation. This required a small change to the
1661 initialization, since AcpiExec must install its own operation region
1664 AcpiExec: Added support to make the debug object timer optional. Default
1665 is timer disabled. This cleans up the debug object output -- the timer
1666 data is rarely used.
1668 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1669 appear on the command line. This can be important when there are
1670 interdependencies/references between the tables.
1672 iASL/Templates. Add support to generate template files with multiple
1673 SSDTs within a single output file. Also added ommand line support to
1674 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1678 ----------------------------------------
1679 24 November 2015. Summary of changes for version 20151124:
1681 1) ACPICA kernel-resident subsystem:
1683 Fixed a possible regression for a previous update to FADT handling. The
1684 FADT no longer has a fixed table ID, causing some issues with code that
1685 was hardwired to a specific ID. Lv Zheng.
1687 Fixed a problem where the method auto-serialization could interfere with
1688 the current SyncLevel. This change makes the auto-serialization support
1689 transparent to the SyncLevel support and management.
1691 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1692 interface is intended for early access to the namespace during the
1693 initial namespace device discovery walk. The _SUB method has been seen to
1694 access operation regions in some cases, causing errors because the
1695 operation regions are not fully initialized.
1697 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1698 that can cause faults. Lv Zheng.
1700 AML Debugger: Add thread ID support so that single-step mode only applies
1701 to the AML Debugger thread. This prevents runtime errors within some
1704 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1705 methods that are invoked by this interface are optional, removed warnings
1706 emitted for the case where one or more of these methods do not exist.
1707 ACPICA BZ 1208, original change by Prarit Bhargava.
1709 Made a major pass through the entire ACPICA source code base to
1710 standardize formatting that has diverged a bit over time. There are no
1711 functional changes, but this will of course cause quite a few code
1712 differences from the previous ACPICA release.
1714 Example Code and Data Size: These are the sizes for the OS-independent
1715 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1716 debug version of the code includes the debug output trace mechanism and
1717 has a much larger code and data size.
1720 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1721 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1723 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1724 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1727 2) iASL Compiler/Disassembler and Tools:
1729 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1730 definition blocks within a single ASL file and the resulting AML file.
1731 Support for this type of file was also added to the various tools that
1732 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1733 example code below shows two definition blocks within the same file:
1735 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1739 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1743 iASL: Enhanced typechecking for the Name() operator. All expressions for
1744 the value of the named object must be reduced/folded to a single constant
1745 at compile time, as per the ACPI specification (the AML definition of
1748 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1749 and assembly headers). Now all emitted code correctly begins in column 1.
1751 iASL: Added an error message for an attempt to open a Scope() on an
1752 object defined in an SSDT. The DSDT is always loaded into the namespace
1753 first, so any attempt to open a Scope on an SSDT object will fail at
1757 ----------------------------------------
1758 30 September 2015. Summary of changes for version 20150930:
1760 1) ACPICA kernel-resident subsystem:
1762 Debugger: Implemented several changes and bug fixes to assist support for
1763 the in-kernel version of the AML debugger. Lv Zheng.
1764 - Fix the "predefined" command for in-kernel debugger.
1765 - Do not enter debug command loop for the help and version commands.
1766 - Disallow "execute" command during execution/single-step of a method.
1768 Interpreter: Updated runtime typechecking for all operators that have
1769 target operands. The operand is resolved and validated that it is legal.
1770 For example, the target cannot be a non-data object such as a Device,
1771 Mutex, ThermalZone, etc., as per the ACPI specification.
1773 Debugger: Fixed the double-mutex user I/O handshake to work when local
1774 deadlock detection is enabled.
1776 Debugger: limited display of method locals and arguments (LocalX and
1777 ArgX) to only those that have actually been initialized. This prevents
1778 lines of extraneous output.
1780 Updated the definition of the NFIT table to correct the bit polarity of
1781 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1783 Example Code and Data Size: These are the sizes for the OS-independent
1784 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1785 debug version of the code includes the debug output trace mechanism and
1786 has a much larger code and data size.
1789 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1790 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1792 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1793 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1796 2) iASL Compiler/Disassembler and Tools:
1798 iASL: Improved the compile-time typechecking for operands of many of the
1801 -- Added an option to disable compiler operand/operator typechecking (-
1804 -- For the following operators, the TermArg operands are now validated
1805 when possible to be Integer data objects: BankField, OperationRegion,
1806 DataTableRegion, Buffer, and Package.
1808 -- Store (Source, Target): Both the source and target operands are
1809 resolved and checked that the operands are both legal. For example,
1810 neither operand can be a non-data object such as a Device, Mutex,
1811 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1812 operator can be used to store an object to any type of target object.
1814 -- Store (Source, Target): If the source is a Package object, the target
1815 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1816 is a Package, the source must also be a Package.
1818 -- Store (Source, Target): A warning is issued if the source and target
1819 resolve to the identical named object.
1821 -- Store (Source, <method invocation>): An error is generated for the
1822 target method invocation, as this construct is not supported by the AML
1825 -- For all ASL math and logic operators, the target operand must be a
1826 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1827 includes the function return value also.
1829 -- External declarations are also included in the typechecking where
1830 possible. External objects defined using the UnknownObj keyword cannot be
1831 typechecked, however.
1833 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1835 - Legacy code: Index(PKG1, 3)
1836 - New ASL+ code: PKG1[3]
1837 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1840 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1841 spaces were inadvertently appended to the filename, causing file access
1842 and deletion problems on some systems.
1844 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1845 possible compiler output files when building the test suite -- thus
1846 exercising these features of the compiler. These files are automatically
1847 deleted when the test suite exits.
1850 ----------------------------------------
1851 18 August 2015. Summary of changes for version 20150818:
1853 1) ACPICA kernel-resident subsystem:
1855 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1856 Zheng. ACPICA BZ 1186.
1858 Completed development to ensure that the ACPICA Disassembler and Debugger
1859 are fully standalone components of ACPICA. Removed cross-component
1860 dependences. Lv Zheng.
1862 The max-number-of-AML-loops is now runtime configurable (previously was
1863 compile-time only). This is essentially a loop timeout to force-abort
1864 infinite AML loops. ACPCIA BZ 1192.
1866 Debugger: Cleanup output to dump ACPI names and namepaths without any
1867 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1869 Removed unnecessary conditional compilations across the Debugger and
1870 Disassembler components where entire modules could be left uncompiled.
1872 The aapits test is deprecated and has been removed from the ACPICA git
1873 tree. The test has never been completed and has not been maintained, thus
1874 becoming rather useless. ACPICA BZ 1015, 794.
1876 A batch of small changes to close bugzilla and other reports:
1877 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1878 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1879 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1880 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1882 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1884 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1886 - Debugger: Split debugger initialization/termination interfaces. Lv
1888 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1890 - AcpiExec: Add debug message during _REG method phase during table
1892 - AcpiNames: Fix a regression where some output was missing and no longer
1894 - Debugger: General cleanup and simplification. Lv Zheng.
1895 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1897 Example Code and Data Size: These are the sizes for the OS-independent
1898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1899 debug version of the code includes the debug output trace mechanism and
1900 has a much larger code and data size.
1903 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1904 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1906 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1907 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1910 2) iASL Compiler/Disassembler and Tools:
1912 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1913 were not handled properly and caused load errors. Now, properly invoke
1914 and use the ACPICA auto-reallocate mechanism for ACPI table data
1915 structures. ACPICA BZ 1188
1917 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1920 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1921 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1922 executed during initialization. ACPICA BZ 1187, 1189.
1924 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1925 that corresponds to each disassembled ASL statement, to simplify
1926 debugging. ACPICA BZ 1191.
1928 Debugger: Add option to the "objects" command to display a summary of the
1929 current namespace objects (Object type and count). This is displayed if
1930 the command is entered with no arguments.
1932 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1935 ----------------------------------------
1936 17 July 2015. Summary of changes for version 20150717:
1938 1) ACPICA kernel-resident subsystem:
1940 Improved the partitioning between the Debugger and Disassembler
1941 components. This allows the Debugger to be used standalone within kernel
1942 code without the Disassembler (which is used for single stepping also).
1943 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1945 Debugger: Implemented a new command to trace the execution of control
1946 methods (Trace). This is especially useful for the in-kernel version of
1947 the debugger when file I/O may not be available for method trace output.
1948 See the ACPICA reference for more information. Lv Zheng.
1950 Moved all C library prototypes (used for the local versions of these
1951 functions when requested) to a new header, acclib.h
1952 Cleaned up the use of non-ANSI C library functions. These functions are
1953 implemented locally in ACPICA. Moved all such functions to a common
1954 source file, utnonansi.c
1956 Debugger: Fixed a problem with the "!!" command (get last command
1957 executed) where the debugger could enter an infinite loop and eventually
1960 Removed the use of local macros that were used for some of the standard C
1961 library functions to automatically cast input parameters. This mostly
1962 affected the is* functions where the input parameter is defined to be an
1963 int. This required a few modifications to the main ACPICA source code to
1964 provide casting for these functions and eliminate possible compiler
1965 warnings for these parameters.
1967 Across the source code, added additional status/error checking to resolve
1968 issues discovered by static source code analysis tools such as Coverity.
1970 Example Code and Data Size: These are the sizes for the OS-independent
1971 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1972 debug version of the code includes the debug output trace mechanism and
1973 has a much larger code and data size.
1976 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1977 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1979 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1980 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1983 2) iASL Compiler/Disassembler and Tools:
1985 iASL: Fixed a regression where the device map file feature no longer
1986 worked properly when used in conjunction with the disassembler. It only
1987 worked properly with the compiler itself.
1989 iASL: Implemented a new warning for method LocalX variables that are set
1990 but never used (similar to a C compiler such as gcc). This also applies
1991 to ArgX variables that are not defined by the parent method, and are
1992 instead (legally) used as local variables.
1994 iASL/Preprocessor: Finished the pass-through of line numbers from the
1995 preprocessor to the compiler. This ensures that compiler errors/warnings
1996 have the correct original line numbers and filenames, regardless of any
1999 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
2000 pass-through of comments to the preprocessor output file (which becomes
2001 the compiler input file). Also fixed a problem with // comments that
2002 appear after a math expression.
2004 iASL: Added support for the TCPA server table to the table compiler and
2005 template generator. (The client table was already previously supported)
2007 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
2008 identify the iASL compiler.
2010 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
2011 multiple times. The new names are ACPI_SIGN_NEGATIVE and
2014 AcpiHelp: Update to expand help messages for the iASL preprocessor
2018 ----------------------------------------
2019 19 June 2015. Summary of changes for version 20150619:
2021 Two regressions in version 20150616 have been addressed:
2023 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
2024 etc.) This update changes ACPICA to only use the standard headers for
2025 functions, or the prototypes for the local versions of the C library
2026 functions. Across the source code, this required some additional casts
2027 for some Clib invocations for portability. Moved all local prototypes to
2028 a new file, acclib.h
2030 Fixes several problems with recent changes to the handling of the FACS
2031 table that could cause some systems not to boot.
2034 ----------------------------------------
2035 16 June 2015. Summary of changes for version 20150616:
2038 1) ACPICA kernel-resident subsystem:
2040 Across the entire ACPICA source code base, the various macros for the C
2041 library functions (such as ACPI_STRLEN, etc.) have been removed and
2042 replaced by the standard C library names (strlen, etc.) The original
2043 purpose for these macros is no longer applicable. This simplification
2044 reduces the number of macros used in the ACPICA source code
2045 significantly, improving readability and maintainability.
2047 Implemented support for a new ACPI table, the OSDT. This table, the
2048 "override" SDT, can be loaded directly by the host OS at boot time. It
2049 enables the replacement of existing namespace objects that were installed
2050 via the DSDT and/or SSDTs. The primary purpose for this is to replace
2051 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
2052 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
2055 Added support for systems with (improperly) two FACS tables -- a "32-bit"
2056 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
2057 X field). This change will support both automatically. There continues to
2058 be systems found with this issue. This support requires a change to the
2059 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
2060 been added to allow the host to select which FACS is desired
2061 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
2064 Added a new feature to allow for systems that do not contain an FACS.
2065 Although this is already supported on hardware-reduced platforms, the
2066 feature has been extended for all platforms. The reasoning is that we do
2067 not want to abort the entire ACPICA initialization just because the
2068 system is seriously buggy and has no FACS.
2070 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
2071 not correctly transcribed from the ACPI specification in ACPICA version
2074 Implemented support for the _CLS object in the AcpiGetObjectInfo external
2077 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
2078 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
2079 compiler also updated. Note: The TCPA "server" table is not supported by
2080 the disassembler/table-compiler at this time.
2082 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
2084 Example Code and Data Size: These are the sizes for the OS-independent
2085 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2086 debug version of the code includes the debug output trace mechanism and
2087 has a much larger code and data size.
2090 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2091 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2093 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2094 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2097 2) iASL Compiler/Disassembler and Tools:
2099 Disassembler: Fixed a problem with the new symbolic operator disassembler
2100 where incorrect ASL code could be emitted in some cases for the "non-
2101 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
2102 ShiftRight. The actual problem cases seem to be rather unusual in common
2103 ASL code, however. David Box.
2105 Modified the linux version of acpidump to obtain ACPI tables from not
2106 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
2109 iASL: Fixed a problem where the user preprocessor output file (.i)
2110 contained extra data that was not expected. The compiler was using this
2111 file as a temporary file and passed through #line directives in order to
2112 keep compiler error messages in sync with the input file and line number
2113 across multiple include files. The (.i) is no longer a temporary file as
2114 the compiler uses a new, different file for the original purpose.
2116 iASL: Fixed a problem where comments within the original ASL source code
2117 file were not passed through to the preprocessor output file, nor any
2120 iASL: Fixed some issues for the handling of the "#include" preprocessor
2121 directive and the similar (but not the same) "Include" ASL operator.
2123 iASL: Add support for the new OSDT in both the disassembler and compiler.
2125 iASL: Fixed a problem with the constant folding support where a Buffer
2126 object could be incorrectly generated (incorrectly formed) during a
2127 conversion to a Store() operator.
2129 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
2130 description text for the _REV predefined name. _REV now permanently
2131 returns 2, as per the ACPI 6.0 specification.
2133 Debugger: Enhanced the output of the Debug ASL object for references
2134 produced by the Index operator. For Buffers and strings, only output the
2135 actual byte pointed to by the index. For packages, only print the single
2136 package element decoded by the index. Previously, the entire
2137 buffer/string/package was emitted.
2139 iASL/Table-compiler: Fixed a regression where the "generic" data types
2140 were no longer recognized, causing errors.
2143 ----------------------------------------
2144 15 May 2015. Summary of changes for version 20150515:
2146 This release implements most of ACPI 6.0 as described below.
2148 1) ACPICA kernel-resident subsystem:
2150 Implemented runtime argument checking and return value checking for all
2151 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
2152 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
2154 Example Code and Data Size: These are the sizes for the OS-independent
2155 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2156 debug version of the code includes the debug output trace mechanism and
2157 has a much larger code and data size.
2160 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2161 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2163 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2164 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2167 2) iASL Compiler/Disassembler and Tools:
2169 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
2170 names (argument count validation and return value typechecking.)
2172 iASL disassembler and table compiler: implemented support for all new
2173 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
2175 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
2178 iASL preprocessor: Added a new directive to enable inclusion of binary
2179 blobs into ASL code. The new directive is #includebuffer. It takes a
2180 binary file as input and emits a named ascii buffer object into the ASL
2183 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
2185 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
2188 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
2192 ----------------------------------------
2193 10 April 2015. Summary of changes for version 20150410:
2195 Reverted a change introduced in version 20150408 that caused
2196 a regression in the disassembler where incorrect operator
2197 symbols could be emitted.
2200 ----------------------------------------
2201 08 April 2015. Summary of changes for version 20150408:
2204 1) ACPICA kernel-resident subsystem:
2206 Permanently set the return value for the _REV predefined name. It now
2207 returns 2 (was 5). This matches other ACPI implementations. _REV will be
2208 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
2209 for ACPI 2.0 and later. It should never be used to differentiate or
2210 identify operating systems.
2212 Added the "Windows 2015" string to the _OSI support. ACPICA will now
2213 return TRUE to a query with this string.
2215 Fixed several issues with the local version of the printf function.
2217 Added the C99 compiler option (-std=c99) to the Unix makefiles.
2220 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
2221 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
2223 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2224 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2227 2) iASL Compiler/Disassembler and Tools:
2229 iASL: Implemented an enhancement to the constant folding feature to
2230 transform the parse tree to a simple Store operation whenever possible:
2231 Add (2, 3, X) ==> is converted to: Store (5, X)
2232 X = 2 + 3 ==> is converted to: Store (5, X)
2234 Updated support for the SLIC table (Software Licensing Description Table)
2235 in both the Data Table compiler and the disassembler. The SLIC table
2236 support now conforms to "Microsoft Software Licensing Tables (SLIC and
2237 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
2238 following the ACPI header is now defined to be "Proprietary Data", and as
2239 such, can only be entered or displayed as a hex data block.
2241 Implemented full support for the MSDM table as described in the document
2242 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
2243 following the ACPI header is defined to be "Proprietary Data", and can
2244 only be entered or displayed as a hex data block.
2246 Implemented the -Pn option for the iASL Table Compiler (was only
2247 implemented for the ASL compiler). This option disables the iASL
2250 Disassembler: For disassembly of Data Tables, added a comment field
2251 around the Ascii equivalent data that is emitted as part of the "Raw
2252 Table Data" block. This prevents the iASL Preprocessor from possible
2253 confusion if/when the table is compiled.
2255 Disassembler: Added an option (-df) to force the disassembler to assume
2256 that the table being disassembled contains valid AML. This feature is
2257 useful for disassembling AML files that contain ACPI signatures other
2258 than DSDT or SSDT (such as OEMx or other signatures).
2260 Changes for the EFI version of the tools:
2261 1) Fixed a build error/issue
2262 2) Fixed a cast warning
2264 iASL: Fixed a path issue with the __FILE__ operator by making the
2265 directory prefix optional within the internal SplitInputFilename
2268 Debugger: Removed some unused global variables.
2270 Tests: Updated the makefile for proper generation of the AAPITS suite.
2273 ----------------------------------------
2274 04 February 2015. Summary of changes for version 20150204:
2276 ACPICA kernel-resident subsystem:
2278 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2279 copyright to all module headers and signons, including the standard Linux
2280 header. This affects virtually every file in the ACPICA core subsystem,
2281 iASL compiler, all ACPICA utilities, and the test suites.
2283 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
2284 A raw gpe handling mechanism was created to allow better handling of GPE
2285 storms that aren't easily managed by the normal handler. The raw handler
2286 allows disabling/renabling of the the GPE so that interrupt storms can be
2287 avoided in cases where events cannot be timely serviced. In this
2288 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
2289 GPE. This API will leave the reference counts undisturbed, thereby
2290 preventing unintentional clearing of the GPE when the intent in only to
2291 temporarily disable it. Raw handlers allow enabling and disabling of a
2292 GPE by removing GPE register locking. As such, raw handlers much provide
2293 their own locks while using GPE API's to protect access to GPE data
2297 Events: Always modify GPE registers under the GPE lock.
2298 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
2299 values. Reported as bug by joe.liu@apple.com.
2301 Unix makefiles: Separate option to disable optimizations and
2302 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
2303 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
2304 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
2305 errors when building ACPICA. This allows disabling the option without
2306 also having to disable optimazations.
2310 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2311 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
2314 --------------------------------------
2315 07 November 2014. Summary of changes for version 20141107:
2317 This release is available at https://acpica.org/downloads
2319 This release introduces and implements language extensions to ASL that
2320 provide support for symbolic ("C-style") operators and expressions. These
2321 language extensions are known collectively as ASL+.
2324 1) iASL Compiler/Disassembler and Tools:
2326 Disassembler: Fixed a problem with disassembly of the UartSerialBus
2327 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
2330 Disassembler: Fixed the Unicode macro support to add escape sequences.
2331 All non-printable ASCII values are emitted as escape sequences, as well
2332 as the standard escapes for quote and backslash. Ensures that the
2333 disassembled macro can be correctly recompiled.
2335 iASL: Added Printf/Fprintf macros for formatted output. These macros are
2336 translated to existing AML Concatenate and Store operations. Printf
2337 writes to the ASL Debug object. Fprintf allows the specification of an
2338 ASL name as the target. Only a single format specifier is required, %o,
2339 since the AML interpreter dynamically converts objects to the required
2342 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2343 (Concatenate (Concatenate (Concatenate ("", Arg0),
2344 ": Unexpected value for "), Arg1), ", "), Arg2),
2345 " at line "), Arg3), Debug)
2347 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
2348 Arg0, Arg1, Arg2, Arg3)
2350 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2351 ("", Arg1), ": "), Arg0), " Successful"), STR1)
2353 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
2355 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
2356 ASL parse tree before the AML code is generated. This allows blocks of
2357 ASL code to be removed in order to help locate and identify problem
2358 devices and/or code. David E. Box.
2360 AcpiExec: Added support (-fi) for an optional namespace object
2361 initialization file. This file specifies initial values for namespace
2362 objects as necessary for debugging and testing different ASL code paths
2363 that may be taken as a result of BIOS options.
2366 2) Overview of symbolic operator support for ASL (ASL+)
2367 -------------------------------------------------------
2369 As an extension to the ASL language, iASL implements support for symbolic
2370 (C-style) operators for math and logical expressions. This can greatly
2371 simplify ASL code as well as improve both readability and
2372 maintainability. These language extensions can exist concurrently with
2373 all legacy ASL code and expressions.
2375 The symbolic extensions are 100% compatible with existing AML
2376 interpreters, since no new AML opcodes are created. To implement the
2377 extensions, the iASL compiler transforms the symbolic expressions into
2378 the legacy ASL/AML equivalents at compile time.
2380 Full symbolic expressions are supported, along with the standard C
2381 precedence and associativity rules.
2383 Full disassembler support for the symbolic expressions is provided, and
2384 creates an automatic migration path for existing ASL code to ASL+ code
2385 via the disassembly process. By default, the disassembler now emits ASL+
2386 code with symbolic expressions. An option (-dl) is provided to force the
2387 disassembler to emit legacy ASL code if desired.
2389 Below is the complete list of the currently supported symbolic operators
2390 with examples. See the iASL User Guide for additional information.
2393 ASL+ Syntax Legacy ASL Equivalent
2394 ----------- ---------------------
2398 Z = X + Y Add (X, Y, Z)
2399 Z = X - Y Subtract (X, Y, Z)
2400 Z = X * Y Multiply (X, Y, Z)
2401 Z = X / Y Divide (X, Y, , Z)
2402 Z = X % Y Mod (X, Y, Z)
2403 Z = X << Y ShiftLeft (X, Y, Z)
2404 Z = X >> Y ShiftRight (X, Y, Z)
2405 Z = X & Y And (X, Y, Z)
2406 Z = X | Y Or (X, Y, Z)
2407 Z = X ^ Y Xor (X, Y, Z)
2412 // Logical operators
2414 (X == Y) LEqual (X, Y)
2415 (X != Y) LNotEqual (X, Y)
2416 (X < Y) LLess (X, Y)
2417 (X > Y) LGreater (X, Y)
2418 (X <= Y) LLessEqual (X, Y)
2419 (X >= Y) LGreaterEqual (X, Y)
2420 (X && Y) LAnd (X, Y)
2424 // Assignment and compound assignment operations
2427 X += Y Add (X, Y, X)
2428 X -= Y Subtract (X, Y, X)
2429 X *= Y Multiply (X, Y, X)
2430 X /= Y Divide (X, Y, , X)
2431 X %= Y Mod (X, Y, X)
2432 X <<= Y ShiftLeft (X, Y, X)
2433 X >>= Y ShiftRight (X, Y, X)
2434 X &= Y And (X, Y, X)
2436 X ^= Y Xor (X, Y, X)
2443 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2444 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2446 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2448 And (MEMB, 0xFFFFFFF0, SRMB)
2449 Store (MEMB, Local2)
2450 Store (PDBM, Local1)
2451 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2453 Or (PDBM, 0x02, PDBM)
2457 If (((R510 & 0x03FB) == 0x02E0) ||
2458 ((R520 & 0x03FB) == 0x02E0) ||
2459 ((R530 & 0x03FB) == 0x02E0) ||
2460 ((R540 & 0x03FB) == 0x02E0))
2462 SRMB = (MEMB & 0xFFFFFFF0)
2465 PDBM &= 0xFFFFFFFFFFFFFFF9
2471 Store (0x1234, Local1)
2472 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2473 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2474 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2475 Store (Index (PKG1, 0x03), Local6)
2476 Store (Add (Local3, Local2), Debug)
2477 Add (Local1, 0x0F, Local2)
2478 Add (Local1, Multiply (Local2, Local3), Local2)
2479 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2483 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2484 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2485 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2486 Local6 = Index (PKG1, 0x03)
2487 Debug = (Local3 + Local2)
2488 Local2 = (Local1 + 0x0F)
2489 Local2 = (Local1 + (Local2 * Local3))
2490 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2493 ----------------------------------------
2494 26 September 2014. Summary of changes for version 20140926:
2496 1) ACPICA kernel-resident subsystem:
2498 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2499 In order to support GPIO Connection objects with multiple pins, along
2500 with the related Field objects, the following changes to the interface
2501 have been made: The Address is now defined to be the offset in bits of
2502 the field unit from the previous invocation of a Connection. It can be
2503 viewed as a "Pin Number Index" into the connection resource descriptor.
2504 The BitWidth is the exact bit width of the field. It is usually one bit,
2505 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2506 additional information and examples.
2508 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2509 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2510 by the firmware), so that they cannot fire until they are enabled via
2511 AcpiUpdateAllGpes. Rafael J. Wysocki.
2513 Added a new return flag for the Event/GPE status interfaces --
2514 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2515 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2516 GPE currently has a handler associated with it, and can thus actually
2517 affect the system. Lv Zheng.
2519 Example Code and Data Size: These are the sizes for the OS-independent
2520 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2521 debug version of the code includes the debug output trace mechanism and
2522 has a much larger code and data size.
2525 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2526 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2528 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2529 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2531 2) iASL Compiler/Disassembler and Tools:
2533 iASL: Fixed a memory allocation/free regression introduced in 20140828
2534 that could cause the compiler to crash. This was introduced inadvertently
2535 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2538 iASL: Removed two error messages that have been found to create false
2539 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2540 1) Illegal forward reference within a method
2541 2) Illegal reference across two methods
2543 iASL: Implemented a new option (-lm) to create a hardware mapping file
2544 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2545 works for both the compiler and disassembler. See the iASL compiler user
2546 guide for additional information and examples (section 6.4.6).
2548 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2549 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2550 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2552 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2553 unless STDIN is actually a terminal. Assists with batch-mode processing.
2556 Disassembler/AcpiHelp: Added another large group of recognized _HID
2560 ----------------------------------------
2561 28 August 2014. Summary of changes for version 20140828:
2563 1) ACPICA kernel-resident subsystem:
2565 Fixed a problem related to the internal use of the Timer() operator where
2566 a 64-bit divide could cause an attempted link to a double-precision math
2567 library. This divide is not actually necessary, so the code was
2568 restructured to eliminate it. Lv Zheng.
2570 ACPI 5.1: Added support for the runtime validation of the _DSD package
2571 (similar to the iASL support).
2573 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2574 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2576 Example Code and Data Size: These are the sizes for the OS-independent
2577 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2578 debug version of the code includes the debug output trace mechanism and
2579 has a much larger code and data size.
2582 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2583 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2585 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2586 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2588 2) iASL Compiler/Disassembler and Tools:
2590 AcpiExec: Fixed a problem on unix systems where the original terminal
2591 state was not always properly restored upon exit. Seen when using the -v
2592 option. ACPICA BZ 1104.
2594 iASL: Fixed a problem with the validation of the ranges/length within the
2595 Memory24 resource descriptor. There was a boundary condition when the
2596 range was equal to the (length -1) caused by the fact that these values
2597 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2599 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2601 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2603 now supported properly.
2605 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2606 in the disassembler, data table compiler, and table template generator.
2608 iASL: Added a requirement for Device() objects that one of either a _HID
2609 or _ADR must exist within the scope of a Device, as per the ACPI
2610 specification. Remove a similar requirement that was incorrectly in place
2611 for the _DSD object.
2613 iASL: Added error detection for illegal named references within control
2614 methods that would cause runtime failures. Now trapped as errors are: 1)
2615 References to objects within a non-parent control method. 2) Forward
2616 references (within a method) -- for control methods, AML interpreters use
2617 a one-pass parse of control methods. ACPICA BZ 1008.
2619 iASL: Added error checking for dependencies related to the _PSx power
2620 methods. ACPICA BZ 1029.
2621 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2623 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2626 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2627 deploying the existing object and string caches and adding new caches for
2630 iASL: Split the huge parser source file into multiple subfiles to improve
2631 manageability. Generation now requires the M4 macro preprocessor, which
2632 is part of the Bison distribution on both unix and windows platforms.
2634 AcpiSrc: Fixed and removed all extraneous warnings generated during
2635 entire ACPICA source code scan and/or conversion.
2638 ----------------------------------------
2640 24 July 2014. Summary of changes for version 20140724:
2642 The ACPI 5.1 specification has been released and is available at:
2643 http://uefi.org/specs/access
2646 0) ACPI 5.1 support in ACPICA:
2648 ACPI 5.1 is fully supported in ACPICA as of this release.
2650 New predefined names. Support includes iASL and runtime ACPICA
2652 _CCA (Cache Coherency Attribute).
2653 _DSD (Device-Specific Data). David Box.
2655 Modifications to existing ACPI tables. Support includes headers, iASL
2656 Data Table compiler, disassembler, and the template generator.
2657 FADT - New fields and flags. Graeme Gregory.
2658 GTDT - One new subtable and new fields. Tomasz Nowicki.
2659 MADT - Two new subtables. Tomasz Nowicki.
2660 PCCT - One new subtable.
2663 New notification type for System Resource Affinity change events.
2666 1) ACPICA kernel-resident subsystem:
2668 Fixed a regression introduced in 20140627 where a fault can happen during
2669 the deletion of Alias AML namespace objects. The problem affected both
2670 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2672 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2673 simple mechanism to enable wake GPEs that have no associated handler or
2674 control method. Rafael Wysocki.
2676 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2677 handler or control method associated with the particular GPE. This will
2678 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2680 Updated GPE handling and dispatch by disabling the GPE before clearing
2681 the status bit for edge-triggered GPEs. Lv Zheng.
2683 Added Timer() support to the AML Debug object. The current timer value is
2684 now displayed with each invocation of (Store to) the debug object to
2685 enable simple generation of execution times for AML code (method
2686 execution for example.) ACPICA BZ 1093.
2688 Example Code and Data Size: These are the sizes for the OS-independent
2689 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2690 debug version of the code includes the debug output trace mechanism and
2691 has a much larger code and data size.
2694 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2695 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2697 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2698 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2701 2) iASL Compiler/Disassembler and Tools:
2703 Fixed an issue with the recently added local printf implementation,
2704 concerning width/precision specifiers that could cause incorrect output.
2705 Lv Zheng. ACPICA BZ 1094.
2707 Disassembler: Added support to detect buffers that contain UUIDs and
2708 disassemble them to an invocation of the ToUUID operator. Also emit
2709 commented descriptions of known ACPI-related UUIDs.
2711 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2712 -u. Adds three new files.
2714 iASL: Update table compiler and disassembler for DMAR table changes that
2715 were introduced in September 2013. With assistance by David Woodhouse.
2717 ----------------------------------------
2718 27 June 2014. Summary of changes for version 20140627:
2720 1) ACPICA kernel-resident subsystem:
2722 Formatted Output: Implemented local versions of standard formatted output
2723 utilities such as printf, etc. Over time, it has been discovered that
2724 there are in fact many portability issues with printf, and the addition
2725 of this feature will fix/prevent these issues once and for all. Some
2726 known issues are summarized below:
2728 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2729 for the Linux kernel and is %uI64 for some MSVC versions.
2730 2) Invoking printf consistently in a manner that is portable across both
2731 32-bit and 64-bit platforms is difficult at best in many situations.
2732 3) The output format for pointers varies from system to system (leading
2733 zeros especially), and leads to inconsistent output from ACPICA across
2735 4) Certain platform-specific printf formats may conflict with ACPICA use.
2736 5) If there is no local C library available, ACPICA now has local support
2739 -- To address these printf issues in a complete manner, ACPICA now
2740 directly implements a small subset of printf format specifiers, only
2741 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2743 Implemented support for ACPICA generation within the EFI environment.
2744 Initially, the AcpiDump utility is supported in the UEFI shell
2745 environment. Lv Zheng.
2747 Added a new external interface, AcpiLogError, to improve ACPICA
2748 portability. This allows the host to redirect error messages from the
2749 ACPICA utilities. Lv Zheng.
2751 Added and deployed new OSL file I/O interfaces to improve ACPICA
2759 There are C library implementations of these functions in the new file
2760 service_layers/oslibcfs.c -- however, the functions can be implemented by
2761 the local host in any way necessary. Lv Zheng.
2763 Implemented a mechanism to disable/enable ACPI table checksum validation
2764 at runtime. This can be useful when loading tables very early during OS
2765 initialization when it may not be possible to map the entire table in
2766 order to compute the checksum. Lv Zheng.
2768 Fixed a buffer allocation issue for the Generic Serial Bus support.
2769 Originally, a fixed buffer length was used. This change allows for
2770 variable-length buffers based upon the protocol indicated by the field
2771 access attributes. Reported by Lan Tianyu. Lv Zheng.
2773 Fixed a problem where an object detached from a namespace node was not
2774 properly terminated/cleared and could cause a circular list problem if
2775 reattached. ACPICA BZ 1063. David Box.
2777 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2779 Fixed a possible memory leak in an error return path within the function
2780 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2782 Example Code and Data Size: These are the sizes for the OS-independent
2783 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2784 debug version of the code includes the debug output trace mechanism and
2785 has a much larger code and data size.
2788 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2789 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2791 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2792 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2795 2) iASL Compiler/Disassembler and Tools:
2797 Disassembler: Add dump of ASCII equivalent text within a comment at the
2798 end of each line of the output for the Buffer() ASL operator.
2800 AcpiDump: Miscellaneous changes:
2801 Fixed repetitive table dump in -n mode.
2802 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2803 the ACPI 2.0 GUID fails.
2805 iASL: Fixed a problem where the compiler could fault if incorrectly given
2806 an acpidump output file as input. ACPICA BZ 1088. David Box.
2808 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2809 they are invoked without any arguments.
2811 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2812 1086. Colin Ian King.
2814 Disassembler: Cleaned up a block of code that extracts a parent Op
2815 object. Added a comment that explains that the parent is guaranteed to be
2816 valid in this case. ACPICA BZ 1069.
2819 ----------------------------------------
2820 24 April 2014. Summary of changes for version 20140424:
2822 1) ACPICA kernel-resident subsystem:
2824 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2825 Some of these tables are known to contain a trailing NULL entry. Lv
2828 Removed an extraneous error message for the case where there are a large
2829 number of system GPEs (> 124). This was the "32-bit FADT register is too
2830 long to convert to GAS struct" message, which is irrelevant for GPEs
2831 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2832 (limited capacity) GAS bit length. Also, several changes to ensure proper
2833 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2836 Implemented and deployed additional configuration support for the public
2837 ACPICA external interfaces. Entire classes of interfaces can now be
2838 easily modified or configured out, replaced by stubbed inline functions
2839 by default. Lv Zheng.
2841 Moved all public ACPICA runtime configuration globals to the public
2842 ACPICA external interface file for convenience. Also, removed some
2843 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2845 Documentation: Added a new section to the ACPICA reference describing the
2846 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2847 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2850 Example Code and Data Size: These are the sizes for the OS-independent
2851 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2852 debug version of the code includes the debug output trace mechanism and
2853 has a much larger code and data size.
2856 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2857 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2859 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2860 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2863 2) iASL Compiler/Disassembler and Tools:
2865 iASL and disassembler: Add full support for the LPIT table (Low Power
2866 Idle Table). Includes support in the disassembler, data table compiler,
2867 and template generator.
2870 1) Add option to force the use of the RSDT (over the XSDT).
2871 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2873 iASL: Add check for predefined packages that are too large. For
2874 predefined names that contain subpackages, check if each subpackage is
2875 too large. (Check for too small already exists.)
2877 Debugger: Updated the GPE command (which simulates a GPE by executing the
2878 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2879 to the GPE 0/1 FADT-defined blocks.
2881 Unix application OSL: Update line-editing support. Add additional error
2882 checking and take care not to reset terminal attributes on exit if they
2883 were never set. This should help guarantee that the terminal is always
2884 left in the previous state on program exit.
2887 ----------------------------------------
2888 25 March 2014. Summary of changes for version 20140325:
2890 1) ACPICA kernel-resident subsystem:
2892 Updated the auto-serialize feature for control methods. This feature
2893 automatically serializes all methods that create named objects in order
2894 to prevent runtime errors. The update adds support to ignore the
2895 currently executing AML SyncLevel when invoking such a method, in order
2896 to prevent disruption of any existing SyncLevel priorities that may exist
2897 in the AML code. Although the use of SyncLevels is relatively rare, this
2898 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2899 appear on some machines starting with the 20140214 release.
2901 Added a new external interface to allow the host to install ACPI tables
2902 very early, before the namespace is even created. AcpiInstallTable gives
2903 the host additional flexibility for ACPI table management. Tables can be
2904 installed directly by the host as if they had originally appeared in the
2905 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2906 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2907 with additional internal restructuring and cleanup. See the ACPICA
2908 Reference for interface details. Lv Zheng.
2910 Added validation of the checksum for all incoming dynamically loaded
2911 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2914 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2915 and GPE handler removal. Restructured calls to eliminate possible race
2916 conditions. Lv Zheng.
2918 Added a warning for the use/execution of the ASL/AML Unload (table)
2919 operator. This will help detect and identify machines that use this
2920 operator if and when it is ever used. This operator has never been seen
2921 in the field and the usage model and possible side-effects of the drastic
2922 runtime action of a full table removal are unknown.
2924 Reverted the use of #pragma push/pop which was introduced in the 20140214
2925 release. It appears that push and pop are not implemented by enough
2926 compilers to make the use of this feature feasible for ACPICA at this
2927 time. However, these operators may be deployed in a future ACPICA
2930 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2933 Source code generation:
2934 1) Disabled the use of the "strchr" macro for the gcc-specific
2935 generation. For some versions of gcc, this macro can periodically expose
2936 a compiler bug which in turn causes compile-time error(s).
2937 2) Added support for PPC64 compilation. Colin Ian King.
2939 Example Code and Data Size: These are the sizes for the OS-independent
2940 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2941 debug version of the code includes the debug output trace mechanism and
2942 has a much larger code and data size.
2945 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2946 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2948 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2949 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2952 2) iASL Compiler/Disassembler and Tools:
2954 Disassembler: Added several new features to improve the readability of
2955 the resulting ASL code. Extra information is emitted within comment
2956 fields in the ASL code:
2957 1) Known _HID/_CID values are decoded to descriptive text.
2958 2) Standard values for the Notify() operator are decoded to descriptive
2960 3) Target operands are expanded to full pathnames (in a comment) when
2963 Disassembler: Miscellaneous updates for extern() handling:
2964 1) Abort compiler if file specified by -fe option does not exist.
2965 2) Silence unnecessary warnings about argument count mismatches.
2966 3) Update warning messages concerning unresolved method externals.
2967 4) Emit "UnknownObj" keyword for externals whose type cannot be
2971 1) Added the -a option to display both the ASL syntax and the AML
2972 encoding for an input ASL operator. This effectively displays all known
2973 information about an ASL operator with one AcpiHelp invocation.
2974 2) Added substring match support (similar to a wildcard) for the -i
2975 (_HID/PNP IDs) option.
2977 iASL/Disassembler: Since this tool does not yet support execution on big-
2978 endian machines, added detection of endianness and an error message if
2979 execution is attempted on big-endian. Support for big-endian within iASL
2980 is a feature that is on the ACPICA to-be-done list.
2983 1) Remove option to extract binary files from an acpidump; this function
2984 is made obsolete by the AcpiXtract utility.
2985 2) General cleanup of open files and allocated buffers.
2988 ----------------------------------------
2989 14 February 2014. Summary of changes for version 20140214:
2991 1) ACPICA kernel-resident subsystem:
2993 Implemented a new mechanism to proactively prevent problems with ill-
2994 behaved reentrant control methods that create named ACPI objects. This
2995 behavior is illegal as per the ACPI specification, but is nonetheless
2996 frequently seen in the field. Previously, this could lead to an
2997 AE_ALREADY_EXISTS exception if the method was actually entered by more
2998 than one thread. This new mechanism detects such methods at table load
2999 time and marks them "serialized" to prevent reentrancy. A new global
3000 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
3001 feature if desired. This mechanism and global option obsoletes and
3002 supersedes the previous AcpiGbl_SerializeAllMethods option.
3004 Added the "Windows 2013" string to the _OSI support. ACPICA will now
3005 respond TRUE to _OSI queries with this string. It is the stated policy of
3006 ACPICA to add new strings to the _OSI support as soon as possible after
3007 they are defined. See the full ACPICA _OSI policy which has been added to
3008 the utilities/utosi.c file.
3010 Hardened/updated the _PRT return value auto-repair code:
3011 1) Do not abort the repair on a single subpackage failure, continue to
3012 check all subpackages.
3013 2) Add check for the minimum subpackage length (4).
3014 3) Properly handle extraneous NULL package elements.
3016 Added support to avoid the possibility of infinite loops when traversing
3017 object linked lists. Never allow an infinite loop, even in the face of
3018 corrupted object lists.
3020 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
3021 pack(pop) directives to ensure that the ACPICA headers are independent of
3022 compiler settings or other host headers.
3024 Example Code and Data Size: These are the sizes for the OS-independent
3025 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3026 debug version of the code includes the debug output trace mechanism and
3027 has a much larger code and data size.
3030 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
3031 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
3033 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3034 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3037 2) iASL Compiler/Disassembler and Tools:
3039 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
3040 first reserved field was incorrectly forced to have a value of zero. This
3041 change correctly forces the field to have a value of one. ACPICA BZ 1081.
3043 Debugger: Added missing support for the "Extra" and "Data" subobjects
3044 when displaying object data.
3046 Debugger: Added support to display entire object linked lists when
3047 displaying object data.
3049 iASL: Removed the obsolete -g option to obtain ACPI tables from the
3050 Windows registry. This feature has been superseded by the acpidump
3054 ----------------------------------------
3055 14 January 2014. Summary of changes for version 20140114:
3057 1) ACPICA kernel-resident subsystem:
3059 Updated all ACPICA copyrights and signons to 2014. Added the 2014
3060 copyright to all module headers and signons, including the standard Linux
3061 header. This affects virtually every file in the ACPICA core subsystem,
3062 iASL compiler, all ACPICA utilities, and the test suites.
3064 Improved parameter validation for AcpiInstallGpeBlock. Added the
3066 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
3067 2) There is not already a GPE block attached to the device.
3068 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
3071 Correctly support "references" in the ACPI_OBJECT. This change fixes the
3072 support to allow references (namespace nodes) to be passed as arguments
3073 to control methods via the evaluate object interface. This is probably
3074 most useful for testing purposes, however.
3076 Improved support for 32/64 bit physical addresses in printf()-like
3077 output. This change improves the support for physical addresses in printf
3078 debug statements and other output on both 32-bit and 64-bit hosts. It
3079 consistently outputs the appropriate number of bytes for each host. The
3080 %p specifier is unsatisfactory since it does not emit uniform output on
3081 all hosts/clib implementations (on some, leading zeros are not supported,
3082 leading to difficult-to-read output).
3084 Example Code and Data Size: These are the sizes for the OS-independent
3085 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3086 debug version of the code includes the debug output trace mechanism and
3087 has a much larger code and data size.
3090 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3091 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3093 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3094 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3097 2) iASL Compiler/Disassembler and Tools:
3099 iASL: Fix a possible fault when using the Connection() operator. Fixes a
3100 problem if the parent Field definition for the Connection operator refers
3101 to an operation region that does not exist. ACPICA BZ 1064.
3103 AcpiExec: Load of local test tables is now optional. The utility has the
3104 capability to load some various tables to test features of ACPICA.
3105 However, there are enough of them that the output of the utility became
3106 confusing. With this change, only the required local tables are displayed
3107 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
3108 line specification. This makes the default output simler and easier to
3109 understand. The -el command line option restores the original behavior
3110 for testing purposes.
3112 AcpiExec: Added support for overlapping operation regions. This change
3113 expands the simulation of operation regions by supporting regions that
3114 overlap within the given address space. Supports SystemMemory and
3115 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
3117 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
3118 allows AcpiExec to simulate these address spaces, similar to the current
3119 support for SystemMemory and SystemIO.
3121 Debugger: Added new command to read/write/compare all namespace objects.
3122 The command "test objects" will exercise the entire namespace by writing
3123 new values to each data object, and ensuring that the write was
3124 successful. The original value is then restored and verified.
3126 Debugger: Added the "test predefined" command. This change makes this
3127 test public and puts it under the new "test" command. The test executes
3128 each and every predefined name within the current namespace.
3131 ----------------------------------------
3132 18 December 2013. Summary of changes for version 20131218:
3134 Global note: The ACPI 5.0A specification was released this month. There
3135 are no changes needed for ACPICA since this release of ACPI is an
3136 errata/clarification release. The specification is available at
3140 1) ACPICA kernel-resident subsystem:
3142 Added validation of the XSDT root table if it is present. Some older
3143 platforms contain an XSDT that is ill-formed or otherwise invalid (such
3144 as containing some or all entries that are NULL pointers). This change
3145 adds a new function to validate the XSDT before actually using it. If the
3146 XSDT is found to be invalid, ACPICA will now automatically fall back to
3147 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
3148 ACPICA and enhanced by Lv Zheng and Bob Moore.
3150 Added a runtime option to ignore the XSDT and force the use of the RSDT.
3151 This change adds a runtime option that will force ACPICA to use the RSDT
3152 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
3153 requires that an XSDT be used instead of the RSDT, the XSDT has been
3154 found to be corrupt or ill-formed on some machines. Lv Zheng.
3156 Added a runtime option to favor 32-bit FADT register addresses over the
3157 64-bit addresses. This change adds an option to favor 32-bit FADT
3158 addresses when there is a conflict between the 32-bit and 64-bit versions
3159 of the same register. The default behavior is to use the 64-bit version
3160 in accordance with the ACPI specification. This can now be overridden via
3161 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
3163 During the change above, the internal "Convert FADT" and "Verify FADT"
3164 functions have been merged to simplify the code, making it easier to
3165 understand and maintain. ACPICA BZ 933.
3167 Improve exception reporting and handling for GPE block installation.
3168 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
3169 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
3171 Added helper macros to extract bus/segment numbers from the HEST table.
3172 This change adds two macros to extract the encoded bus and segment
3173 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
3174 Betty Dall <betty.dall@hp.com>
3176 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
3177 by ACPICA. It is not a public macro, so it should have no effect on
3178 existing OSV code. Lv Zheng.
3180 Example Code and Data Size: These are the sizes for the OS-independent
3181 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3182 debug version of the code includes the debug output trace mechanism and
3183 has a much larger code and data size.
3186 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3187 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3189 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3190 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3193 2) iASL Compiler/Disassembler and Tools:
3195 Disassembler: Improved pathname support for emitted External()
3196 statements. This change adds full pathname support for external names
3197 that have been resolved internally by the inclusion of additional ACPI
3198 tables (via the iASL -e option). Without this change, the disassembler
3199 can emit multiple externals for the same object, or it become confused
3200 when the Scope() operator is used on an external object. Overall, greatly
3201 improves the ability to actually recompile the emitted ASL code when
3202 objects a referenced across multiple ACPI tables. Reported by Michael
3203 Tsirkin (mst@redhat.com).
3205 Tests/ASLTS: Updated functional control suite to execute with no errors.
3206 David Box. Fixed several errors related to the testing of the interpreter
3207 slack mode. Lv Zheng.
3209 iASL: Added support to detect names that are declared within a control
3210 method, but are unused (these are temporary names that are only valid
3211 during the time the method is executing). A remark is issued for these
3212 cases. ACPICA BZ 1022.
3214 iASL: Added full support for the DBG2 table. Adds full disassembler,
3215 table compiler, and template generator support for the DBG2 table (Debug
3218 iASL: Added full support for the PCCT table, update the table definition.
3219 Updates the PCCT table definition in the actbl3.h header and adds table
3220 compiler and template generator support.
3222 iASL: Added an option to emit only error messages (no warnings/remarks).
3223 The -ve option will enable only error messages, warnings and remarks are
3224 suppressed. This can simplify debugging when only the errors are
3225 important, such as when an ACPI table is disassembled and there are many
3226 warnings and remarks -- but only the actual errors are of real interest.
3228 Example ACPICA code (source/tools/examples): Updated the example code so
3229 that it builds to an actual working program, not just example code. Added
3230 ACPI tables and execution of an example control method in the DSDT. Added
3231 makefile support for Unix generation.
3234 ----------------------------------------
3235 15 November 2013. Summary of changes for version 20131115:
3237 This release is available at https://acpica.org/downloads
3240 1) ACPICA kernel-resident subsystem:
3242 Resource Manager: Fixed loop termination for the "get AML length"
3243 function. The loop previously had an error termination on a NULL resource
3244 pointer, which can never happen since the loop simply increments a valid
3245 resource pointer. This fix changes the loop to terminate with an error on
3246 an invalid end-of-buffer condition. The problem can be seen as an
3247 infinite loop by callers to AcpiSetCurrentResources with an invalid or
3248 corrupted resource descriptor, or a resource descriptor that is missing
3249 an END_TAG descriptor. Reported by Dan Carpenter
3250 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
3252 Table unload and ACPICA termination: Delete all attached data objects
3253 during namespace node deletion. This fix updates namespace node deletion
3254 to delete the entire list of attached objects (attached via
3255 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
3256 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
3258 ACPICA termination: Added support to delete all objects attached to the
3259 root namespace node. This fix deletes any and all objects that have been
3260 attached to the root node via AcpiAttachData. Previously, none of these
3261 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
3263 Debug output: Do not emit the function nesting level for the in-kernel
3264 build. The nesting level is really only useful during a single-thread
3265 execution. Therefore, only enable this output for the AcpiExec utility.
3266 Also, only emit the thread ID when executing under AcpiExec (Context
3267 switches are still always detected and a message is emitted). ACPICA BZ
3270 Example Code and Data Size: These are the sizes for the OS-independent
3271 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3272 debug version of the code includes the debug output trace mechanism and
3273 has a much larger code and data size.
3276 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3277 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3279 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3280 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3283 2) iASL Compiler/Disassembler and Tools:
3285 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
3286 correct portable POSIX header for terminal control functions.
3288 Disassembler: Fixed control method invocation issues related to the use
3289 of the CondRefOf() operator. The problem is seen in the disassembly where
3290 control method invocations may not be disassembled properly if the
3291 control method name has been used previously as an argument to CondRefOf.
3292 The solution is to not attempt to emit an external declaration for the
3293 CondRefOf target (it is not necessary in the first place). This prevents
3294 disassembler object type confusion. ACPICA BZ 988.
3296 Unix Makefiles: Added an option to disable compiler optimizations and the
3297 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
3298 with optimizations (reportedly, gcc 4.4 for example). This change adds a
3299 command line option for make (NOOPT) that disables all compiler
3300 optimizations and the _FORTIFY_SOURCE compiler flag. The default
3301 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
3302 1034. Lv Zheng, Bob Moore.
3304 Tests/ASLTS: Added options to specify individual test cases and modes.
3305 This allows testers running aslts.sh to optionally specify individual
3306 test modes and test cases. Also added an option to disable the forced
3307 generation of the ACPICA tools from source if desired. Lv Zheng.
3309 ----------------------------------------
3310 27 September 2013. Summary of changes for version 20130927:
3312 This release is available at https://acpica.org/downloads
3315 1) ACPICA kernel-resident subsystem:
3317 Fixed a problem with store operations to reference objects. This change
3318 fixes a problem where a Store operation to an ArgX object that contained
3320 reference to a field object did not complete the automatic dereference
3322 then write to the actual field object. Instead, the object type of the
3323 field object was inadvertently changed to match the type of the source
3324 operand. The new behavior will actually write to the field object (buffer
3325 field or field unit), thus matching the correct ACPI-defined behavior.
3327 Implemented support to allow the host to redefine individual OSL
3328 prototypes. This change enables the host to redefine OSL prototypes found
3329 in the acpiosxf.h file. This allows the host to implement OSL interfaces
3330 with a macro or inlined function. Further, it allows the host to add any
3331 additional required modifiers such as __iomem, __init, __exit, etc., as
3332 necessary on a per-interface basis. Enables maximum flexibility for the
3333 OSL interfaces. Lv Zheng.
3335 Hardcoded the access width for the FADT-defined reset register. The ACPI
3336 specification requires the reset register width to be 8 bits. ACPICA now
3337 hardcodes the width to 8 and ignores the FADT width value. This provides
3338 compatibility with other ACPI implementations that have allowed BIOS code
3339 with bad register width values to go unnoticed. Matthew Garett, Bob
3343 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
3345 in the OSL header (acpiosxf). The change modifies the position of this
3346 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
3347 build issues if the OSL defines the implementation of the interface to be
3348 an inline stub function. Lv Zheng.
3350 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
3351 initialization interfaces. This change adds a new macro for the main init
3352 and terminate external interfaces in order to support hosts that require
3353 additional or different processing for these functions. Changed from
3354 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
3357 Cleaned up the memory allocation macros for configurability. In the
3359 case, the ACPI_ALLOCATE and related macros now resolve directly to their
3360 respective AcpiOs* OSL interfaces. Two options:
3361 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
3362 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
3363 2) For AcpiExec (and for debugging), the macros can optionally be
3365 to the local ACPICA interfaces that track each allocation (local tracking
3366 is used to immediately detect memory leaks).
3369 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
3370 to predefine this macro to either TRUE or FALSE during the system build.
3372 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
3374 Example Code and Data Size: These are the sizes for the OS-independent
3375 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3376 debug version of the code includes the debug output trace mechanism and
3377 has a much larger code and data size.
3380 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3381 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3383 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3384 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3387 2) iASL Compiler/Disassembler and Tools:
3389 iASL: Implemented wildcard support for the -e option. This simplifies use
3390 when there are many SSDTs that must be included to resolve external
3392 declarations. ACPICA BZ 1041. Example:
3393 iasl -e ssdt*.dat -d dsdt.dat
3395 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3396 adds a portable module that implements full history and limited line
3397 editing for Unix and Linux systems. It does not use readline() due to
3398 portability issues. Instead it uses the POSIX termio interface to put the
3399 terminal in raw input mode so that the various special keys can be
3401 (such as up/down-arrow for history support and left/right-arrow for line
3402 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3404 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3405 one or more spaces. This provides compatible with early or different
3406 versions of the AcpiDump utility. ACPICA BZ 1044.
3408 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3409 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3410 no other data. This change adds support to dump these tables. Any tables
3411 shorter than the length of an ACPI table header remain in error (an error
3412 message is emitted). Reported by Yi Li.
3414 Debugger: Echo actual command along with the "unknown command" message.
3416 ----------------------------------------
3417 23 August 2013. Summary of changes for version 20130823:
3419 1) ACPICA kernel-resident subsystem:
3421 Implemented support for host-installed System Control Interrupt (SCI)
3422 handlers. Certain ACPI functionality requires the host to handle raw
3423 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3424 state support requires the host device driver to handle SCIs to examine
3425 if the doorbell has been activated. Multiple SCI handlers can be
3426 installed to allow for future expansion. New external interfaces are
3427 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3428 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3430 Operation region support: Never locally free the handler "context"
3431 pointer. This change removes some dangerous code that attempts to free
3432 the handler context pointer in some (rare) circumstances. The owner of
3433 the handler owns this pointer and the ACPICA code should never touch it.
3434 Although not seen to be an issue in any kernel, it did show up as a
3435 problem (fault) under AcpiExec. Also, set the internal storage field for
3436 the context pointer to zero when the region is deactivated, simply for
3437 sanity. David Box. ACPICA BZ 1039.
3439 AcpiRead: On error, do not modify the return value target location. If an
3440 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3441 modify the target of the return value pointer. Makes the code consistent
3442 with the rest of ACPICA. Bjorn Helgaas.
3444 Example Code and Data Size: These are the sizes for the OS-independent
3445 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3446 debug version of the code includes the debug output trace mechanism and
3447 has a much larger code and data size.
3450 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3451 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3453 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3454 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3457 2) iASL Compiler/Disassembler and Tools:
3459 AcpiDump: Implemented several new features and fixed some problems:
3460 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3461 2) Added support for multiple table instances (SSDT, UEFI).
3462 3) Added option to dump "customized" (overridden) tables (-c).
3463 4) Fixed a problem where some table filenames were improperly
3465 5) Improved some error messages, removed some unnecessary messages.
3467 iASL: Implemented additional support for disassembly of ACPI tables that
3468 contain invocations of external control methods. The -fe<file> option
3469 allows the import of a file that specifies the external methods along
3470 with the required number of arguments for each -- allowing for the
3471 correct disassembly of the table. This is a workaround for a limitation
3472 of AML code where the disassembler often cannot determine the number of
3473 arguments required for an external control method and generates incorrect
3474 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3476 Debugger: Implemented a new command (paths) that displays the full
3477 pathnames (namepaths) and object types of all objects in the namespace.
3478 This is an alternative to the namespace command.
3480 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3481 mechanism and any installed handlers.
3483 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3484 This can occur if there are too many parent prefixes in a namepath (for
3485 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3487 Application OSLs: Set the return value for the PCI read functions. These
3488 functions simply return AE_OK, but should set the return value to zero
3489 also. This change implements this. ACPICA BZ 1038.
3491 Debugger: Prevent possible command line buffer overflow. Increase the
3492 size of a couple of the debugger line buffers, and ensure that overflow
3493 cannot happen. ACPICA BZ 1037.
3495 iASL: Changed to abort immediately on serious errors during the parsing
3496 phase. Due to the nature of ASL, there is no point in attempting to
3497 compile these types of errors, and they typically end up causing a
3498 cascade of hundreds of errors which obscure the original problem.
3500 ----------------------------------------
3501 25 July 2013. Summary of changes for version 20130725:
3503 1) ACPICA kernel-resident subsystem:
3505 Fixed a problem with the DerefOf operator where references to FieldUnits
3506 and BufferFields incorrectly returned the parent object, not the actual
3507 value of the object. After this change, a dereference of a FieldUnit
3508 reference results in a read operation on the field to get the value, and
3509 likewise, the appropriate BufferField value is extracted from the target
3512 Fixed a problem where the _WAK method could cause a fault under these
3513 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3514 method returned no value. The problem is rarely seen because most kernels
3515 run ACPICA in slack mode.
3517 For the DerefOf operator, a fatal error now results if an attempt is made
3518 to dereference a reference (created by the Index operator) to a NULL
3519 package element. Provides compatibility with other ACPI implementations,
3520 and this behavior will be added to a future version of the ACPI
3523 The ACPI Power Management Timer (defined in the FADT) is now optional.
3524 This provides compatibility with other ACPI implementations and will
3525 appear in the next version of the ACPI specification. If there is no PM
3526 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3527 zero in the FADT indicates no PM timer.
3529 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3530 allows the host to globally enable/disable all vendor strings, all
3531 feature strings, or both. Intended to be primarily used for debugging
3532 purposes only. Lv Zheng.
3534 Expose the collected _OSI data to the host via a global variable. This
3535 data tracks the highest level vendor ID that has been invoked by the BIOS
3536 so that the host (and potentially ACPICA itself) can change behaviors
3537 based upon the age of the BIOS.
3539 Example Code and Data Size: These are the sizes for the OS-independent
3540 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3541 debug version of the code includes the debug output trace mechanism and
3542 has a much larger code and data size.
3545 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3546 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3548 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3549 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3552 2) iASL Compiler/Disassembler and Tools:
3554 iASL: Created the following enhancements for the -so option (create
3556 1)Add offsets for the last nameseg in each namepath for every supported
3558 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3559 3)Add the actual AML opcode for the parent object of every supported
3561 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3563 Disassembler: Emit all unresolved external symbols in a single block.
3564 These are external references to control methods that could not be
3565 resolved, and thus, the disassembler had to make a guess at the number of
3568 iASL: The argument to the -T option (create table template) is now
3569 optional. If not specified, the default table is a DSDT, typically the
3572 ----------------------------------------
3573 26 June 2013. Summary of changes for version 20130626:
3575 1) ACPICA kernel-resident subsystem:
3577 Fixed an issue with runtime repair of the _CST object. Null or invalid
3578 elements were not always removed properly. Lv Zheng.
3580 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3581 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3582 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3583 makes the system-wide number of GPEs essentially unlimited.
3585 Example Code and Data Size: These are the sizes for the OS-independent
3586 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3587 debug version of the code includes the debug output trace mechanism and
3588 has a much larger code and data size.
3591 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3592 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3594 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3595 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3598 2) iASL Compiler/Disassembler and Tools:
3600 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3601 hosts. Now supports Linux, FreeBSD, and Windows.
3603 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3604 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3606 iASL/Preprocessor: Implemented full support for nested
3607 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3609 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3610 max. The original purpose of this constraint was to limit the amount of
3611 debug output. However, the string function in question (UtPrintString) is
3612 now used for the disassembler also, where 256 bytes is insufficient.
3613 Reported by RehabMan@GitHub.
3615 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3616 tables. ACPICA BZ 999. Lv Zheng.
3618 iASL: Fixed a couple of error exit issues that could result in a "Could
3619 not delete <file>" message during ASL compilation.
3621 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3622 the actual signatures for these tables are "FACP" and "APIC",
3625 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3626 tables are allowed to have multiple instances.
3628 ----------------------------------------
3629 17 May 2013. Summary of changes for version 20130517:
3631 1) ACPICA kernel-resident subsystem:
3633 Fixed a regression introduced in version 20130328 for _INI methods. This
3634 change fixes a problem introduced in 20130328 where _INI methods are no
3635 longer executed properly because of a memory block that was not
3636 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3637 <tomasz.nowicki@linaro.org>.
3639 Fixed a possible problem with the new extended sleep registers in the
3641 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3642 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3645 Implemented return value repair code for _CST predefined objects: Sort
3647 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3649 Implemented a debug-only option to disable loading of SSDTs from the
3650 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3651 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3652 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3654 Fixed some issues in the ACPICA initialization and termination code:
3655 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3656 1) Clear events initialized flag upon event component termination. ACPICA
3658 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3659 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3660 4) Clear debug buffer global on termination to prevent possible multiple
3661 delete. ACPICA BZ 1010.
3663 Standardized all switch() blocks across the entire source base. After
3665 years, different formatting for switch() had crept in. This change makes
3666 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3668 Split some files to enhance ACPICA modularity and configurability:
3669 1) Split buffer dump routines into utilities/utbuffer.c
3670 2) Split internal error message routines into utilities/uterror.c
3671 3) Split table print utilities into tables/tbprint.c
3672 4) Split iASL command-line option processing into asloptions.c
3674 Makefile enhancements:
3675 1) Support for all new files above.
3676 2) Abort make on errors from any subcomponent. Chao Guan.
3677 3) Add build support for Apple Mac OS X. Liang Qi.
3679 Example Code and Data Size: These are the sizes for the OS-independent
3680 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3681 debug version of the code includes the debug output trace mechanism and
3682 has a much larger code and data size.
3685 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3686 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3688 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3689 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3692 2) iASL Compiler/Disassembler and Tools:
3694 New utility: Implemented an easily portable version of the acpidump
3695 utility to extract ACPI tables from the system (or a file) in an ASCII
3697 dump format. The top-level code implements the various command line
3698 options, file I/O, and table dump routines. To port to a new host, only
3699 three functions need to be implemented to get tables -- since this
3700 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3701 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3702 1) The Windows version obtains the ACPI tables from the Registry.
3703 2) The Linux version is under development.
3704 3) Other hosts - If an OS-dependent module is submitted, it will be
3705 distributed with ACPICA.
3707 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3708 restructuring/change to the initialization sequence caused this option to
3709 no longer work properly.
3711 iASL: Implemented a mechanism to disable specific warnings and remarks.
3712 Adds a new command line option, "-vw <messageid> as well as "#pragma
3713 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3715 iASL: Fix for too-strict package object validation. The package object
3716 validation for return values from the predefined names is a bit too
3717 strict, it does not allow names references within the package (which will
3718 be resolved at runtime.) These types of references cannot be validated at
3719 compile time. This change ignores named references within package objects
3720 for names that return or define static packages.
3722 Debugger: Fixed the 80-character command line limitation for the History
3723 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3725 iASL: Added control method and package support for the -so option
3726 (generates AML offset table for BIOS support.)
3728 iASL: issue a remark if a non-serialized method creates named objects. If
3729 a thread blocks within the method for any reason, and another thread
3730 enters the method, the method will fail because an attempt will be made
3732 create the same (named) object twice. In this case, issue a remark that
3733 the method should be marked serialized. NOTE: may become a warning later.
3736 ----------------------------------------
3737 18 April 2013. Summary of changes for version 20130418:
3739 1) ACPICA kernel-resident subsystem:
3741 Fixed a possible buffer overrun during some rare but specific field unit
3742 read operations. This overrun can only happen if the DSDT version is 1 --
3743 meaning that all AML integers are 32 bits -- and the field length is
3744 between 33 and 55 bits long. During the read, an internal buffer object
3746 created for the field unit because the field is larger than an integer
3748 bits). However, in this case, the buffer will be incorrectly written
3749 beyond the end because the buffer length is less than the internal
3751 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3752 long, but a full 8 bytes will be written.
3754 Updated the Embedded Controller "orphan" _REG method support. This refers
3755 to _REG methods under the EC device that have no corresponding operation
3756 region. This is allowed by the ACPI specification. This update removes a
3757 dependency on the existence an ECDT table. It will execute an orphan _REG
3758 method as long as the operation region handler for the EC is installed at
3759 the EC device node and not the namespace root. Rui Zhang (original
3760 update), Bob Moore (update/integrate).
3762 Implemented run-time argument typechecking for all predefined ACPI names
3763 (_STA, _BIF, etc.) This change performs object typechecking on all
3764 incoming arguments for all predefined names executed via
3765 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3766 passing correct object types as well as the correct number of arguments
3767 (therefore identifying any issues immediately). Also, the ASL/namespace
3768 definition of the predefined name is checked against the ACPI
3769 specification for the proper argument count. Adds one new file,
3772 Changed an exception code for the ASL UnLoad() operator. Changed the
3773 exception code for the case where the input DdbHandle is invalid, from
3774 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3776 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3777 global makefile. The use of this flag causes compiler errors on earlier
3778 versions of GCC, so it has been removed for compatibility.
3780 Miscellaneous cleanup:
3781 1) Removed some unused/obsolete macros
3782 2) Fixed a possible memory leak in the _OSI support
3783 3) Removed an unused variable in the predefined name support
3784 4) Windows OSL: remove obsolete reference to a memory list field
3786 Example Code and Data Size: These are the sizes for the OS-independent
3787 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3788 debug version of the code includes the debug output trace mechanism and
3789 has a much larger code and data size.
3792 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3793 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3795 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3796 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3799 2) iASL Compiler/Disassembler and Tools:
3801 AcpiExec: Added installation of a handler for the SystemCMOS address
3802 space. This prevents control method abort if a method accesses this
3805 AcpiExec: Added support for multiple EC devices, and now install EC
3806 operation region handler(s) at the actual EC device instead of the
3807 namespace root. This reflects the typical behavior of host operating
3810 AcpiExec: Updated to ensure that all operation region handlers are
3811 installed before the _REG methods are executed. This prevents a _REG
3812 method from aborting if it accesses an address space has no handler.
3813 AcpiExec installs a handler for every possible address space.
3815 Debugger: Enhanced the "handlers" command to display non-root handlers.
3816 This change enhances the handlers command to display handlers associated
3817 with individual devices throughout the namespace, in addition to the
3818 currently supported display of handlers associated with the root
3822 ASL Test Suite: Several test suite errors have been identified and
3823 resolved, reducing the total error count during execution. Chao Guan.
3825 ----------------------------------------
3826 28 March 2013. Summary of changes for version 20130328:
3828 1) ACPICA kernel-resident subsystem:
3830 Fixed several possible race conditions with the internal object reference
3831 counting mechanism. Some of the external ACPICA interfaces update object
3832 reference counts without holding the interpreter or namespace lock. This
3833 change adds a spinlock to protect reference count updates on the internal
3834 ACPICA objects. Reported by and with assistance from Andriy Gapon
3837 FADT support: Removed an extraneous warning for very large GPE register
3838 sets. This change removes a size mismatch warning if the legacy length
3839 field for a GPE register set is larger than the 64-bit GAS structure can
3840 accommodate. GPE register sets can be larger than the 255-bit width
3841 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3843 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3844 return from this interface. Handles a possible timeout case if
3845 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3846 "forever". Jung-uk Kim.
3848 Predefined name support: Add allowed/required argument type information
3850 the master predefined info table. This change adds the infrastructure to
3851 enable typechecking on incoming arguments for all predefined
3852 methods/objects. It does not actually contain the code that will fully
3853 utilize this information, this is still under development. Also condenses
3854 some duplicate code for the predefined names into a new module,
3855 utilities/utpredef.c
3857 Example Code and Data Size: These are the sizes for the OS-independent
3858 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3859 debug version of the code includes the debug output trace mechanism and
3860 has a much larger code and data size.
3863 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3864 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3866 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3867 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3870 2) iASL Compiler/Disassembler and Tools:
3872 iASL: Implemented a new option to simplify the development of ACPI-
3874 BIOS code. Adds support for a new "offset table" output file. The -so
3875 option will create a C table containing the AML table offsets of various
3876 named objects in the namespace so that BIOS code can modify them easily
3878 boot time. This can simplify BIOS runtime code by eliminating expensive
3879 searches for "magic values", enhancing boot times and adding greater
3880 reliability. With assistance from Lee Hamel.
3882 iASL: Allow additional predefined names to return zero-length packages.
3883 Now, all predefined names that are defined by the ACPI specification to
3884 return a "variable-length package of packages" are allowed to return a
3885 zero length top-level package. This allows the BIOS to tell the host that
3886 the requested feature is not supported, and supports existing BIOS/ASL
3889 iASL: Changed the "result not used" warning to an error. This is the case
3890 where an ASL operator is effectively a NOOP because the result of the
3891 operation is not stored anywhere. For example:
3893 There is no target (missing 3rd argument), nor is the function return
3894 value used. This is potentially a very serious problem -- since the code
3895 was probably intended to do something, but for whatever reason, the value
3896 was not stored. Therefore, this issue has been upgraded from a warning to
3899 AcpiHelp: Added allowable/required argument types to the predefined names
3900 info display. This feature utilizes the recent update to the predefined
3901 names table (above).
3903 ----------------------------------------
3904 14 February 2013. Summary of changes for version 20130214:
3906 1) ACPICA Kernel-resident Subsystem:
3908 Fixed a possible regression on some hosts: Reinstated the safe return
3909 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3910 evaluated only once. Although these macros are not needed for the ACPICA
3911 code itself, they are often used by ACPI-related host device drivers
3913 the safe feature may be necessary.
3915 Fixed several issues related to the ACPI 5.0 reduced hardware support
3916 (SOC): Now ensure that if the platform declares itself as hardware-
3918 via the FADT, the following functions become NOOPs (and always return
3919 AE_OK) because ACPI is always enabled by definition on these machines:
3925 Dynamic Object Repair: Implemented additional runtime repairs for
3926 predefined name return values. Both of these repairs can simplify code in
3927 the related device drivers that invoke these methods:
3928 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3929 string to a Unicode buffer.
3930 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3932 lone end tag descriptor in the following cases: A Return(0) was executed,
3933 a null buffer was returned, or no object at all was returned (non-slack
3934 mode only). Adds a new file, nsconvert.c
3935 ACPICA BZ 998. Bob Moore, Lv Zheng.
3937 Resource Manager: Added additional code to prevent possible infinite
3939 while traversing corrupted or ill-formed resource template buffers. Check
3940 for zero-length resource descriptors in all code that loops through
3941 resource templates (the length field is used to index through the
3942 template). This change also hardens the external AcpiWalkResources and
3943 AcpiWalkResourceBuffer interfaces.
3945 Local Cache Manager: Enhanced the main data structure to eliminate an
3946 unnecessary mechanism to access the next object in the list. Actually
3947 provides a small performance enhancement for hosts that use the local
3948 ACPICA cache manager. Jung-uk Kim.
3950 Example Code and Data Size: These are the sizes for the OS-independent
3951 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3952 debug version of the code includes the debug output trace mechanism and
3953 has a much larger code and data size.
3956 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3957 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3959 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3960 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3963 2) iASL Compiler/Disassembler and Tools:
3965 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3966 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3967 that were made to the ACPI 5.0 specification.
3969 iASL/Disassembler: Added full support for the following new ACPI tables:
3970 1) The MTMR table (MID Timer Table)
3971 2) The VRTC table (Virtual Real Time Clock Table).
3972 Includes header file, disassembler, table compiler, and template support
3975 iASL: Implemented compile-time validation of package objects returned by
3976 predefined names. This new feature validates static package objects
3977 returned by the various predefined names defined to return packages. Both
3978 object types and package lengths are validated, for both parent packages
3979 and sub-packages, if any. The code is similar in structure and behavior
3981 the runtime repair mechanism within the AML interpreter and uses the
3982 existing predefined name information table. Adds a new file, aslprepkg.c.
3985 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3986 This feature detects a binary file with a valid ACPI table header and
3987 invokes the disassembler automatically. Eliminates the need to
3988 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3990 iASL/Disassembler: Added several warnings for the case where there are
3991 unresolved control methods during the disassembly. This can potentially
3992 cause errors when the output file is compiled, because the disassembler
3993 assumes zero method arguments in these cases (it cannot determine the
3994 actual number of arguments without resolution/definition of the method).
3996 Debugger: Added support to display all resources with a single command.
3997 Invocation of the resources command with no arguments will now display
3999 resources within the current namespace.
4001 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
4004 ----------------------------------------
4005 17 January 2013. Summary of changes for version 20130117:
4007 1) ACPICA Kernel-resident Subsystem:
4009 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
4010 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
4011 objects to return a package containing one integer, most BIOS code
4013 two integers and the previous code reflects that. However, we also need
4015 support BIOS code that actually implements to the ACPI spec, and this
4016 change reflects this.
4018 Fixed two issues with the ACPI_DEBUG_PRINT macros:
4019 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
4020 C compilers that require this support.
4021 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
4022 ACPI_DEBUG is already used by many of the various hosts.
4024 Updated all ACPICA copyrights and signons to 2013. Added the 2013
4025 copyright to all module headers and signons, including the standard Linux
4026 header. This affects virtually every file in the ACPICA core subsystem,
4027 iASL compiler, all ACPICA utilities, and the test suites.
4029 Example Code and Data Size: These are the sizes for the OS-independent
4030 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4031 debug version of the code includes the debug output trace mechanism and
4032 has a much larger code and data size.
4035 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4036 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4038 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
4039 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
4042 2) iASL Compiler/Disassembler and Tools:
4044 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
4045 prevent a possible fault on some hosts. Some C libraries modify the arg
4046 pointer parameter to vfprintf making it difficult to call it twice in the
4047 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
4048 does not affect the Windows OSL since the Win C library does not modify
4049 the arg pointer. Chao Guan, Bob Moore.
4051 iASL: Fixed a possible infinite loop when the maximum error count is
4052 reached. If an output file other than the .AML file is specified (such as
4053 a listing file), and the maximum number of errors is reached, do not
4054 attempt to flush data to the output file(s) as the compiler is aborting.
4055 This can cause an infinite loop as the max error count code essentially
4056 keeps calling itself.
4058 iASL/Disassembler: Added an option (-in) to ignore NOOP
4060 Implemented for both the compiler and the disassembler. Often, the NOOP
4061 opcode is used as padding for packages that are changed dynamically by
4063 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
4064 errors. This option causes the disassembler to ignore all NOOP opcodes
4065 (0xA3), and it also causes the compiler to ignore all ASL source code
4069 Debugger: Enhanced the Sleep command to execute all sleep states. This
4070 change allows Sleep to be invoked with no arguments and causes the
4071 debugger to execute all of the sleep states, 0-5, automatically.
4073 ----------------------------------------
4074 20 December 2012. Summary of changes for version 20121220:
4076 1) ACPICA Kernel-resident Subsystem:
4078 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
4079 alternate entry point for AcpiWalkResources and improves the usability of
4080 the resource manager by accepting as input a buffer containing the output
4081 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
4082 input buffer is not deleted by this interface so that it can be used by
4083 the host later. See the ACPICA reference for details.
4085 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
4086 (DSDT version < 2). The constant will be truncated and this warning
4087 reflects that behavior.
4089 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
4090 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
4091 both get and set the new wake bit in these descriptors, separately from
4092 the existing share bit. Reported by Aaron Lu.
4094 Interpreter: Fix Store() when an implicit conversion is not possible. For
4095 example, in the cases such as a store of a string to an existing package
4096 object, implement the store as a CopyObject(). This is a small departure
4097 from the ACPI specification which states that the control method should
4099 aborted in this case. However, the ASLTS suite depends on this behavior.
4101 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
4102 macros: check if debug output is currently enabled as soon as possible to
4103 minimize performance impact if debug is in fact not enabled.
4105 Source code restructuring: Cleanup to improve modularity. The following
4106 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
4107 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
4108 Associated makefiles and project files have been updated.
4110 Changed an exception code for LoadTable operator. For the case where one
4111 of the input strings is too long, change the returned exception code from
4112 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
4114 Fixed a possible memory leak in dispatcher error path. On error, delete
4115 the mutex object created during method mutex creation. Reported by
4116 tim.gardner@canonical.com.
4118 Example Code and Data Size: These are the sizes for the OS-independent
4119 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4120 debug version of the code includes the debug output trace mechanism and
4121 has a much larger code and data size.
4124 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4125 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4127 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4128 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4131 2) iASL Compiler/Disassembler and Tools:
4133 iASL: Disallow a method call as argument to the ObjectType ASL operator.
4134 This change tracks an errata to the ACPI 5.0 document. The AML grammar
4135 will not allow the interpreter to differentiate between a method and a
4136 method invocation when these are used as an argument to the ObjectType
4137 operator. The ACPI specification change is to disallow a method
4139 (UserTerm) for the ObjectType operator.
4141 Finish support for the TPM2 and CSRT tables in the headers, table
4142 compiler, and disassembler.
4144 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
4145 always expires immediately if the semaphore is not available. The
4147 code was using a relative-time timeout, but sem_timedwait requires the
4149 of an absolute time.
4151 iASL: Added a remark if the Timer() operator is used within a 32-bit
4152 table. This operator returns a 64-bit time value that will be truncated
4153 within a 32-bit table.
4155 iASL Source code restructuring: Cleanup to improve modularity. The
4156 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
4157 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
4161 ----------------------------------------
4162 14 November 2012. Summary of changes for version 20121114:
4164 1) ACPICA Kernel-resident Subsystem:
4166 Implemented a performance enhancement for ACPI/AML Package objects. This
4167 change greatly increases the performance of Package objects within the
4168 interpreter. It changes the processing of reference counts for packages
4170 optimizing for the most common case where the package sub-objects are
4171 either Integers, Strings, or Buffers. Increases the overall performance
4173 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
4175 Chao Guan. ACPICA BZ 943.
4177 Implemented and deployed common macros to extract flag bits from resource
4178 descriptors. Improves readability and maintainability of the code. Fixes
4180 problem with the UART serial bus descriptor for the number of data bits
4181 flags (was incorrectly 2 bits, should be 3).
4183 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
4184 of the macros and changed the SETx macros to the style of (destination,
4185 source). Also added ACPI_CASTx companion macros. Lv Zheng.
4187 Example Code and Data Size: These are the sizes for the OS-independent
4188 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4189 debug version of the code includes the debug output trace mechanism and
4190 has a much larger code and data size.
4193 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4194 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4196 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4197 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4200 2) iASL Compiler/Disassembler and Tools:
4202 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
4203 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
4204 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
4206 Disassembler: Fixed a problem with external declaration generation. Fixes
4207 a problem where an incorrect pathname could be generated for an external
4208 declaration if the original reference to the object includes leading
4209 carats (^). ACPICA BZ 984.
4211 Debugger: Completed a major update for the Disassemble<method> command.
4212 This command was out-of-date and did not properly disassemble control
4213 methods that had any reasonable complexity. This fix brings the command
4215 to the same level as the rest of the disassembler. Adds one new file,
4216 dmdeferred.c, which is existing code that is now common with the main
4217 disassembler and the debugger disassemble command. ACPICA MZ 978.
4219 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
4220 Newer versions of Bison emit this prototype, so moved the prototype out
4222 the iASL header to where it is actually used in order to avoid a
4226 iASL/Tools: Standardized use of the stream I/O functions:
4227 1) Ensure check for I/O error after every fopen/fread/fwrite
4228 2) Ensure proper order of size/count arguments for fread/fwrite
4229 3) Use test of (Actual != Requested) after all fwrite, and most fread
4230 4) Standardize I/O error messages
4231 Improves reliability and maintainability of the code. Bob Moore, Lv
4235 Disassembler: Prevent duplicate External() statements. During generation
4236 of external statements, detect similar pathnames that are actually
4237 duplicates such as these:
4240 Remove all leading '\' characters from pathnames during the external
4241 statement generation so that duplicates will be detected and tossed.
4244 Tools: Replace low-level I/O with stream I/O functions. Replace
4245 open/read/write/close with the stream I/O equivalents
4246 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
4249 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
4250 name header so that AcpiXtract recognizes the output file/table.
4252 iASL: Remove obsolete -2 option flag. Originally intended to force the
4253 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
4254 and the entire concept is now obsolete.
4256 ----------------------------------------
4257 18 October 2012. Summary of changes for version 20121018:
4260 1) ACPICA Kernel-resident Subsystem:
4262 Updated support for the ACPI 5.0 MPST table. Fixes some problems
4263 introduced by late changes to the table as it was added to the ACPI 5.0
4264 specification. Includes header, disassembler, and data table compiler
4265 support as well as a new version of the MPST template.
4267 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
4268 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
4269 methods: _HID, _CID, and _UID.
4271 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
4272 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
4273 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
4274 names for their various drivers. Affects the AcpiGetObjectInfo external
4275 interface, and other internal interfaces as well.
4277 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
4278 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
4279 on machines that support non-aligned transfers. Optimizes for this case
4280 rather than using a strncpy. With assistance from Zheng Lv.
4282 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
4283 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
4285 Added a new debug print message for AML mutex objects that are force-
4286 released. At control method termination, any currently acquired mutex
4287 objects are force-released. Adds a new debug-only message for each one
4290 Audited/updated all ACPICA return macros and the function debug depth
4291 counter: 1) Ensure that all functions that use the various TRACE macros
4292 also use the appropriate ACPICA return macros. 2) Ensure that all normal
4293 return statements surround the return expression (value) with parens to
4294 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
4295 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
4297 Global source code changes/maintenance: All extra lines at the start and
4298 end of each source file have been removed for consistency. Also, within
4299 comments, all new sentences start with a single space instead of a double
4300 space, again for consistency across the code base.
4302 Example Code and Data Size: These are the sizes for the OS-independent
4303 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4304 debug version of the code includes the debug output trace mechanism and
4305 has a much larger code and data size.
4308 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4309 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4311 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4312 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4315 2) iASL Compiler/Disassembler and Tools:
4317 AcpiExec: Improved the algorithm used for memory leak/corruption
4318 detection. Added some intelligence to the code that maintains the global
4319 list of allocated memory. The list is now ordered by allocated memory
4320 address, significantly improving performance. When running AcpiExec on
4321 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
4322 on the platform and/or the environment. Note, this performance
4323 enhancement affects the AcpiExec utility only, not the kernel-resident
4326 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
4327 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
4328 incorrect table offset reported for invalid opcodes. Report the original
4329 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
4331 Disassembler: Enhanced the -vt option to emit the binary table data in
4332 hex format to assist with debugging.
4334 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
4335 size of file structure. Colin Ian King.
4337 ----------------------------------------
4338 13 September 2012. Summary of changes for version 20120913:
4341 1) ACPICA Kernel-resident Subsystem:
4343 ACPI 5.0: Added two new notify types for the Hardware Error Notification
4344 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
4348 Table Manager: Merged/removed duplicate code in the root table resize
4349 functions. One function is external, the other is internal. Lv Zheng,
4353 Makefiles: Completely removed the obsolete "Linux" makefiles under
4354 acpica/generate/linux. These makefiles are obsolete and have been
4357 the generic unix makefiles under acpica/generate/unix.
4359 Makefiles: Ensure that binary files always copied properly. Minor rule
4361 to ensure that the final binary output files are always copied up to the
4362 appropriate binary directory (bin32 or bin64.)
4364 Example Code and Data Size: These are the sizes for the OS-independent
4365 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4367 version of the code includes the debug output trace mechanism and has a
4369 larger code and data size.
4372 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4373 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4375 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4376 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4379 2) iASL Compiler/Disassembler and Tools:
4381 Disassembler: Fixed a possible fault during the disassembly of resource
4382 descriptors when a second parse is required because of the invocation of
4383 external control methods within the table. With assistance from
4384 adq@lidskialf.net. ACPICA BZ 976.
4386 iASL: Fixed a namepath optimization problem. An error can occur if the
4388 node that contains the namepath to be optimized does not have a parent
4390 that is a named object. This change fixes the problem.
4392 iASL: Fixed a regression where the AML file is not deleted on errors. The
4394 output file should be deleted if there are any errors during the
4397 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4399 iASL: Added a feature to automatically increase internal line buffer
4401 Via realloc(), automatically increase the internal line buffer sizes as
4402 necessary to support very long source code lines. The current version of
4404 preprocessor requires a buffer long enough to contain full source code
4406 This change increases the line buffer(s) if the input lines go beyond the
4407 current buffer size. This eliminates errors that occurred when a source
4409 line was longer than the buffer.
4411 iASL: Fixed a problem with constant folding in method declarations. The
4412 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4414 Type3 opcode was used.
4416 Debugger: Improved command help support. For incorrect argument count,
4418 full help for the command. For help command itself, allow an argument to
4421 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4422 errors during execution of the suite. Guan Chao.
4424 ----------------------------------------
4425 16 August 2012. Summary of changes for version 20120816:
4428 1) ACPICA Kernel-resident Subsystem:
4430 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4432 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4433 deprecated and will probably be removed from the ACPI specification.
4435 does not invoke them, and reportedly never will. The final nail in the
4437 is that the ACPI specification states that these methods must be run with
4438 interrupts off, which is not going to happen in a kernel interpreter.
4440 Linux has removed all use of the methods also. It was discovered that
4441 invoking these functions caused failures on some machines, probably
4443 they were never tested since Windows does not call them. Affects two
4445 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4448 Implemented support for complex bit-packed buffers returned from the _PLD
4449 (Physical Location of Device) predefined method. Adds a new external
4450 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4452 structure. Note: C Bitfields cannot be used for this type of predefined
4453 structure since the memory layout of individual bitfields is not defined
4455 the C language. In addition, there are endian concerns where a compiler
4457 change the bitfield ordering based on the machine type. The new ACPICA
4458 interface eliminates these issues, and should be called after _PLD is
4459 executed. ACPICA BZ 954.
4461 Implemented a change to allow a scope change to root (via "Scope (\)")
4463 execution of module-level ASL code (code that is executed at table load
4466 Added the Windows8/Server2012 string for the _OSI method. This change
4469 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4472 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4474 and CSRT (Core System Resource Table).
4476 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4477 names. This simplifies access to the buffers returned by these predefined
4478 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4480 GPE support: Removed an extraneous parameter from the various low-level
4481 internal GPE functions. Tang Feng.
4483 Removed the linux makefiles from the unix packages. The generate/linux
4484 makefiles are obsolete and have been removed from the unix tarball
4486 packages. The replacement makefiles are under generate/unix, and there is
4488 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4490 Updates for Unix makefiles:
4491 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4492 2) Update linker flags (move to end of command line) for AcpiExec
4496 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4497 utxface.c to improve modularity and reduce file size.
4499 Example Code and Data Size: These are the sizes for the OS-independent
4500 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4501 debug version of the code includes the debug output trace mechanism and
4503 much larger code and data size.
4506 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4507 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4509 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4510 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4513 2) iASL Compiler/Disassembler and Tools:
4515 iASL: Fixed a problem with constant folding for fixed-length constant
4516 expressions. The constant-folding code was not being invoked for constant
4517 expressions that allow the use of type 3/4/5 opcodes to generate
4519 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4521 in the generation of invalid AML bytecode. ACPICA BZ 970.
4523 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4524 apparently automatically emit some of the necessary externals. This
4526 handles these versions in order to eliminate generation warnings.
4528 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4530 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4532 within comments in the output file.
4534 Debugger: Fixed a regression with the "Threads" command where
4535 AE_BAD_PARAMETER was always returned.
4537 ----------------------------------------
4538 11 July 2012. Summary of changes for version 20120711:
4540 1) ACPICA Kernel-resident Subsystem:
4542 Fixed a possible fault in the return package object repair code. Fixes a
4543 problem that can occur when a lone package object is wrapped with an
4545 package object in order to force conformance to the ACPI specification.
4547 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4551 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4552 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4553 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4555 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4557 Intel and other vendors. (for Intel: ICH4-M and earlier)
4559 This change removes the code to disable/enable bus master arbitration
4561 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4563 resume problems on some machines. The change has been in use for over
4567 Implemented two new external interfaces to support host-directed dynamic
4569 table load and unload. They are intended to simplify the host
4571 of hot-plug support:
4572 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4573 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4575 See the ACPICA reference for additional details. Adds one new file,
4576 components/tables/tbxfload.c
4578 Implemented and deployed two new interfaces for errors and warnings that
4580 known to be caused by BIOS/firmware issues:
4581 AcpiBiosError: Prints "ACPI Firmware Error" message.
4582 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4583 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4585 and FADT errors. Additional deployment to be completed as appropriate in
4587 future. The associated conditional macros are ACPI_BIOS_ERROR and
4588 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4593 Implicit notify support: ensure that no memory allocation occurs within a
4594 critical region. This fix moves a memory allocation outside of the time
4596 spinlock is held. Fixes issues on systems that do not allow this
4600 Split exception code utilities and tables into a new file,
4603 Example Code and Data Size: These are the sizes for the OS-independent
4604 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4606 version of the code includes the debug output trace mechanism and has a
4608 larger code and data size.
4611 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4612 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4614 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4615 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4618 2) iASL Compiler/Disassembler and Tools:
4620 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4624 Debugger: Enhanced the "tables" command to emit additional information
4626 the current set of ACPI tables, including the owner ID and flags decode.
4628 Debugger: Reimplemented the "unload" command to use the new
4629 AcpiUnloadParentTable external interface. This command was disable
4631 due to need for an unload interface.
4633 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4635 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4637 ----------------------------------------
4638 20 June 2012. Summary of changes for version 20120620:
4641 1) ACPICA Kernel-resident Subsystem:
4643 Implemented support to expand the "implicit notify" feature to allow
4645 devices to be notified by a single GPE. This feature automatically
4647 runtime device notification in the absence of a BIOS-provided GPE control
4648 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4650 provided by ACPICA for Windows compatibility, and is a workaround for
4653 code errors. See the description of the AcpiSetupGpeForWake interface in
4655 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4657 Changed some comments and internal function names to simplify and ensure
4658 correctness of the Linux code translation. No functional changes.
4660 Example Code and Data Size: These are the sizes for the OS-independent
4661 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4663 version of the code includes the debug output trace mechanism and has a
4665 larger code and data size.
4668 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4669 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4671 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4672 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4675 2) iASL Compiler/Disassembler and Tools:
4677 Disassembler: Added support to emit short, commented descriptions for the
4679 predefined names in order to improve the readability of the disassembled
4680 output. ACPICA BZ 959. Changes include:
4681 1) Emit descriptions for all standard predefined names (_INI, _STA,
4684 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4685 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4688 AcpiSrc: Fixed several long-standing Linux code translation issues.
4690 descriptions in function headers are now translated properly to lower
4693 underscores. ACPICA BZ 961. Also fixes translation problems such as
4699 local_fADT -> local_FADT
4700 execute_oSI -> execute_OSI
4702 iASL: Fixed a problem where null bytes were inadvertently emitted into
4706 iASL: Added the existing debug options to the standard help screen. There
4708 no longer two different help screens. ACPICA BZ 957.
4710 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4712 expand some of the descriptions where appropriate.
4714 iASL: Fixed the -ot option (display compile times/statistics). Was not
4716 properly for standard output; only worked for the debug file case.
4718 ----------------------------------------
4719 18 May 2012. Summary of changes for version 20120518:
4722 1) ACPICA Core Subsystem:
4724 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4726 to block until asynchronous events such as notifies and GPEs have
4728 Within ACPICA, it is only called before a notify or GPE handler is
4729 removed/uninstalled. It also may be useful for the host OS within related
4730 drivers such as the Embedded Controller driver. See the ACPICA reference
4732 additional information. ACPICA BZ 868.
4734 ACPI Tables: Added a new error message for a possible overflow failure
4736 the conversion of FADT 32-bit legacy register addresses to internal
4739 bit GAS structure representation. The GAS has a one-byte "bit length"
4741 thus limiting the register length to 255 bits. ACPICA BZ 953.
4743 Example Code and Data Size: These are the sizes for the OS-independent
4744 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4746 version of the code includes the debug output trace mechanism and has a
4748 larger code and data size.
4751 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4752 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4754 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4755 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4758 2) iASL Compiler/Disassembler and Tools:
4760 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4762 This keyword was added late in the ACPI 5.0 release cycle and was not
4763 implemented until now.
4765 Disassembler: Added support for Operation Region externals. Adds missing
4766 support for operation regions that are defined in another table, and
4767 referenced locally via a Field or BankField ASL operator. Now generates
4769 correct External statement.
4771 Disassembler: Several additional fixes for the External() statement
4773 related to some ASL operators. Also, order the External() statements
4774 alphabetically in the disassembler output. Fixes the External()
4777 the Create* field, Alias, and Scope operators:
4778 1) Create* buffer field operators - fix type mismatch warning on
4780 2) Alias - implement missing External support
4781 3) Scope - fix to make sure all necessary externals are emitted.
4783 iASL: Improved pathname support. For include files, merge the prefix
4785 with the file pathname and eliminate unnecessary components. Convert
4786 backslashes in all pathnames to forward slashes, for readability. Include
4788 pathname changes affect both #include and Include() type operators.
4790 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4792 of a valid line by inserting a newline and then returning the EOF during
4794 next call to GetNextLine. Prevents the line from being ignored due to EOF
4797 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4799 and Warning messages are now correctly recognized for both the source
4801 browser and the global error and warning counts.
4803 ----------------------------------------
4804 20 April 2012. Summary of changes for version 20120420:
4807 1) ACPICA Core Subsystem:
4809 Implemented support for multiple notify handlers. This change adds
4812 allow multiple system and device notify handlers on Device, Thermal Zone,
4814 Processor objects. This can simplify the host OS notification
4816 Also re-worked and restructured the entire notify support code to
4818 handler installation, handler removal, notify event queuing, and notify
4819 dispatch to handler(s). Note: there can still only be two global notify
4820 handlers - one for system notifies and one for device notifies. There are
4822 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4823 Moore, Rafael Wysocki.
4825 Fixed a regression in the package repair code where the object reference
4826 count was calculated incorrectly. Regression was introduced in the commit
4827 "Support to add Package wrappers".
4829 Fixed a couple possible memory leaks in the AML parser, in the error
4831 path. Jesper Juhl, Lin Ming.
4833 Example Code and Data Size: These are the sizes for the OS-independent
4834 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4835 debug version of the code includes the debug output trace mechanism and
4837 much larger code and data size.
4840 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4841 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4843 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4844 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4847 2) iASL Compiler/Disassembler and Tools:
4849 iASL: Fixed a problem with the resource descriptor support where the
4851 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4852 included in cumulative descriptor offset, resulting in incorrect values
4854 resource tags within resource descriptors appearing after a
4856 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4858 iASL and Preprocessor: Implemented full support for the #line directive
4860 correctly track original source file line numbers through the .i
4862 output file - for error and warning messages.
4864 iASL: Expand the allowable byte constants for address space IDs.
4866 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4867 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4869 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4871 iASL: Add option to completely disable the preprocessor (-Pn).
4873 iASL: Now emit all error/warning messages to standard error (stderr) by
4874 default (instead of the previous stdout).
4876 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4878 for resource descriptor offset fix above. Update/cleanup error output
4879 routines. Enable and send iASL errors/warnings to an error logfile
4880 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4882 several extraneous "unrecognized operator" messages.
4884 ----------------------------------------
4885 20 March 2012. Summary of changes for version 20120320:
4888 1) ACPICA Core Subsystem:
4890 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4891 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4893 does not execute these methods, and therefore these methods are often
4894 untested. It has been seen on some systems where the execution of these
4895 methods causes errors and also prevents the machine from entering S5. It
4897 therefore suggested that host operating systems do not execute these
4899 by default. In the future, perhaps these methods can be optionally
4901 based on the age of the system and/or what is the newest version of
4903 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4905 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4908 Fixed a problem where the length of the local/common FADT was set too
4910 The local FADT table length cannot be set to the common length until the
4911 original length has been examined. There is code that checks the table
4913 and sets various fields appropriately. This can affect older machines
4915 early FADT versions. For example, this can cause inadvertent writes to
4917 CST_CNT register. Julian Anastasov.
4919 Fixed a mapping issue related to a physical table override. Use the
4921 mapping mechanism for tables loaded via the physical override OSL
4923 This allows for early mapping before the virtual memory manager is
4925 Thomas Renninger, Bob Moore.
4927 Enhanced the automatic return-object repair code: Repair a common problem
4929 predefined methods that are defined to return a variable-length Package
4931 sub-objects. If there is only one sub-object, some BIOS ASL code
4933 simply returns the single object instead of a Package with one sub-
4935 This new support will repair this error by wrapping a Package object
4937 the original object, creating the correct and expected Package with one
4939 object. Names that can be repaired in this manner include: _ALR, _CSD,
4941 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4944 Changed the exception code returned for invalid ACPI paths passed as
4945 parameters to external interfaces such as AcpiEvaluateObject. Was
4946 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
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: 93.0K Code, 25.0K Data, 118.0K Total
4957 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4959 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4960 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4963 2) iASL Compiler/Disassembler and Tools:
4965 iASL: Added the infrastructure and initial implementation of a integrated
4967 like preprocessor. This will simplify BIOS development process by
4969 the need for a separate preprocessing step during builds. On Windows, it
4971 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4972 features including full #define() macro support are still under
4974 These preprocessor directives are supported:
4987 In addition, these new command line options are supported:
4988 -D <symbol> Define symbol for preprocessor use
4989 -li Create preprocessed output file (*.i)
4990 -P Preprocess only and create preprocessor output file (*.i)
4992 Table Compiler: Fixed a problem where the equals operator within an
4994 did not work properly.
4996 Updated iASL to use the current versions of Bison/Flex. Updated the
4998 project file to invoke these tools from the standard location. ACPICA BZ
5001 Flex for Windows: V2.5.4
5002 Bison for Windows: V2.4.1
5004 ----------------------------------------
5005 15 February 2012. Summary of changes for version 20120215:
5008 1) ACPICA Core Subsystem:
5010 There have been some major changes to the sleep/wake support code, as
5011 described below (a - e).
5013 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
5014 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
5015 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
5017 time the _BFS method is called and the _WAK method is called. NOTE: all
5019 must update their wake/resume code or else sleep/wake will not work
5023 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
5025 method. Some machines require that the GPEs are enabled before the _WAK
5027 is executed. Thomas Renninger.
5029 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
5031 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
5033 determine whether the system is rebooting or resuming. Matthew Garrett.
5035 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
5037 match the ACPI specification requirement. Rafael Wysocki.
5039 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
5040 registers within the V5 FADT. This support adds two new files:
5041 hardware/hwesleep.c implements the support for the new registers. Moved
5043 sleep/wake external interfaces to hardware/hwxfsleep.c.
5046 Added a new OSL interface for ACPI table overrides,
5047 AcpiOsPhysicalTableOverride. This interface allows the host to override a
5048 table via a physical address, instead of the logical address required by
5049 AcpiOsTableOverride. This simplifies the host implementation. Initial
5050 implementation by Thomas Renninger. The ACPICA implementation creates a
5052 shared function for table overrides that attempts both a logical and a
5055 Expanded the OSL memory read/write interfaces to 64-bit data
5056 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
5057 transfer support for GAS register structures passed to AcpiRead and
5060 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
5062 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
5064 See the ACPICA reference for details. ACPICA BZ 942. This option removes
5066 10% of the code and 5% of the static data, and the following hardware
5068 features become unavailable:
5069 PM Event and Control registers
5070 SCI interrupt (and handler)
5072 General Purpose Events (GPEs)
5075 FACS table (Waking vectors and Global Lock)
5077 Updated the unix tarball directory structure to match the ACPICA git
5079 tree. This ensures that the generic unix makefiles work properly (in
5080 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
5083 Updated the return value of the _REV predefined method to integer value 5
5085 reflect ACPI 5.0 support.
5087 Moved the external ACPI PM timer interface prototypes to the public
5089 file where they belong.
5091 Example Code and Data Size: These are the sizes for the OS-independent
5092 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5094 version of the code includes the debug output trace mechanism and has a
5096 larger code and data size.
5099 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5100 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5102 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5103 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5106 2) iASL Compiler/Disassembler and Tools:
5108 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
5109 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
5110 incorrectly displayed.
5112 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
5115 ----------------------------------------
5116 11 January 2012. Summary of changes for version 20120111:
5119 1) ACPICA Core Subsystem:
5121 Implemented a new mechanism to allow host device drivers to check for
5123 range conflicts with ACPI Operation Regions. Both SystemMemory and
5125 address spaces are supported. A new external interface,
5126 AcpiCheckAddressRange,
5127 allows drivers to check an address range against the ACPI namespace. See
5129 ACPICA reference for additional details. Adds one new file,
5130 utilities/utaddress.c. Lin Ming, Bob Moore.
5132 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
5135 Status registers, update the ACPI 5.0 flags, and update internal data
5136 structures to handle an FADT larger than 256 bytes. The size of the ACPI
5140 Updated all ACPICA copyrights and signons to 2012. Added the 2012
5142 all module headers and signons, including the standard Linux header. This
5143 affects virtually every file in the ACPICA core subsystem, iASL compiler,
5145 all ACPICA utilities.
5147 Example Code and Data Size: These are the sizes for the OS-independent
5148 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5150 version of the code includes the debug output trace mechanism and has a
5152 larger code and data size.
5155 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5156 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5158 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5159 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5162 2) iASL Compiler/Disassembler and Tools:
5164 Disassembler: fixed a problem with the automatic resource tag generation
5165 support. Fixes a problem where the resource tags are inadvertently not
5166 constructed if the table being disassembled contains external references
5168 control methods. Moved the actual construction of the tags to after the
5170 namespace is constructed (after 2nd parse is invoked due to external
5172 method references.) ACPICA BZ 941.
5174 Table Compiler: Make all "generic" operators caseless. These are the
5176 like UINT8, String, etc. Making these caseless improves ease-of-use.
5180 ----------------------------------------
5181 23 November 2011. Summary of changes for version 20111123:
5183 0) ACPI 5.0 Support:
5185 This release contains full support for the ACPI 5.0 specification, as
5188 Reduced Hardware Support:
5189 -------------------------
5191 This support allows for ACPI systems without the usual ACPI hardware.
5193 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
5195 not attempt to initialize or use any of the usual ACPI hardware. Note,
5197 this flag is set, all of the following ACPI hardware is assumed to be not
5198 present and is not initialized or accessed:
5200 General Purpose Events (GPEs)
5201 Fixed Events (PM1a/PM1b and PM Control)
5202 Power Management Timer and Console Buttons (power/sleep)
5203 Real-time Clock Alarm
5205 System Control Interrupt (SCI)
5206 The FACS is assumed to be non-existent
5211 All new tables and updates to existing tables are fully supported in the
5212 ACPICA headers (for use by device drivers), the disassembler, and the
5214 Data Table Compiler. ACPI 5.0 defines these new tables:
5216 BGRT /* Boot Graphics Resource Table */
5217 DRTM /* Dynamic Root of Trust for Measurement table */
5218 FPDT /* Firmware Performance Data Table */
5219 GTDT /* Generic Timer Description Table */
5220 MPST /* Memory Power State Table */
5221 PCCT /* Platform Communications Channel Table */
5222 PMTT /* Platform Memory Topology Table */
5223 RASF /* RAS Feature table */
5225 Operation Regions/SpaceIDs:
5226 ---------------------------
5228 All new operation regions are fully supported by the iASL compiler, the
5229 disassembler, and the ACPICA runtime code (for dispatch to region
5231 The new operation region Space IDs are:
5236 Resource Descriptors:
5237 ---------------------
5239 All new ASL resource descriptors are fully supported by the iASL
5242 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
5244 all new predefined resource tags). New descriptors are:
5253 ASL/AML Operators, New and Modified:
5254 ------------------------------------
5256 One new operator is added, the Connection operator, which is used to
5258 a GeneralPurposeIo or GenericSerialBus resource descriptor with
5260 field objects within an operation region. Several new protocols are
5262 with the AccessAs operator. All are fully supported by the iASL compiler,
5263 disassembler, and runtime ACPICA AML interpreter:
5265 Connection // Declare Field Connection
5267 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
5268 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
5270 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
5271 RawDataBuffer // Data type for Vendor Data
5274 Predefined ASL/AML Objects:
5275 ---------------------------
5277 All new predefined objects/control-methods are supported by the iASL
5279 and the ACPICA runtime validation/repair (arguments and return values.)
5281 predefined names include the following:
5283 Standard Predefined Names (Objects or Control Methods):
5284 _AEI, _CLS, _CPC, _CWS, _DEP,
5285 _DLM, _EVT, _GCP, _CRT, _GWS,
5286 _HRV, _PRE, _PSE, _SRT, _SUB.
5288 Resource Tags (Names used to access individual fields within resource
5290 _DBT, _DPL, _DRS, _END, _FLC,
5291 _IOR, _LIN, _MOD, _PAR, _PHA,
5292 _PIN, _PPI, _POL, _RXL, _SLV,
5293 _SPE, _STB, _TXL, _VEN.
5295 ACPICA External Interfaces:
5296 ---------------------------
5298 Several new interfaces have been defined for use by ACPI-related device
5299 drivers and other host OS services:
5301 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
5303 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
5304 provided by the BIOS. They are intended to be used in conjunction with
5306 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
5307 mutual exclusion with the AML code/interpreter.
5309 AcpiGetEventResources: Returns the (formatted) resource descriptors as
5311 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
5313 resource descriptors associated with hardware-reduced platform events,
5315 to the AcpiGetCurrentResources interface.
5317 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
5318 operation regions, information about the Connection() object and any
5320 length information is passed to the region handler within the Context
5323 AcpiBufferToResource: This interface converts a raw AML buffer containing
5325 resource template or resource descriptor to the ACPI_RESOURCE internal
5327 suitable for use by device drivers. Can be used by an operation region
5329 to convert the Connection() buffer object into a ACPI_RESOURCE.
5331 Miscellaneous/Tools/TestSuites:
5332 -------------------------------
5334 Support for extended _HID names (Four alpha characters instead of three).
5335 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
5336 Support for ACPI 5.0 features in the ASLTS test suite.
5337 Fully updated documentation (ACPICA and iASL reference documents.)
5339 ACPI Table Definition Language:
5340 -------------------------------
5342 Support for this language was implemented and released as a subsystem of
5344 iASL compiler in 2010. (See the iASL compiler User Guide.)
5347 Non-ACPI 5.0 changes for this release:
5348 --------------------------------------
5350 1) ACPICA Core Subsystem:
5352 Fix a problem with operation region declarations where a failure can
5355 the region name and an argument that evaluates to an object (such as the
5356 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
5359 Do not abort an ACPI table load if an invalid space ID is found within.
5361 will be caught later if the offending method is executed. ACPICA BZ 925.
5363 Fixed an issue with the FFixedHW space ID where the ID was not always
5364 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
5366 Fixed a problem with the 32-bit generation of the unix-specific OSL
5367 (osunixxf.c). Lin Ming, ACPICA BZ 936.
5369 Several changes made to enable generation with the GCC 4.6 compiler.
5373 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
5375 field registers out-of-range.
5377 2) iASL Compiler/Disassembler and Tools:
5379 iASL: Implemented the __PATH__ operator, which returns the full pathname
5381 the current source file.
5383 AcpiHelp: Automatically display expanded keyword information for all ASL
5386 Debugger: Add "Template" command to disassemble/dump resource template
5389 Added a new master script to generate and execute the ASLTS test suite.
5390 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5392 iASL: Fix problem with listing generation during processing of the
5394 operator where AML listing was disabled until the entire Switch block was
5397 iASL: Improve support for semicolon statement terminators. Fix "invalid
5398 character" message for some cases when the semicolon is used. Semicolons
5400 now allowed after every <Term> grammar element. ACPICA BZ 927.
5402 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5405 Disassembler: Fix problem with disassembly of the DataTableRegion
5407 where an inadvertent "Unhandled deferred opcode" message could be
5410 3) Example Code and Data Size
5412 These are the sizes for the OS-independent acpica.lib produced by the
5413 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5414 includes the debug output trace mechanism and has a much larger code and
5419 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5420 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5422 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5423 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5425 ----------------------------------------
5426 22 September 2011. Summary of changes for version 20110922:
5430 Support for ACPI 5.0 in ACPICA has been underway for several months and
5432 be released at the same time that ACPI 5.0 is officially released.
5434 The ACPI 5.0 specification is on track for release in the next few
5437 1) ACPICA Core Subsystem:
5439 Fixed a problem where the maximum sleep time for the Sleep() operator was
5440 intended to be limited to two seconds, but was inadvertently limited to
5444 Linux and Unix makefiles: Added header file dependencies to ensure
5446 generation of ACPICA core code and utilities. Also simplified the
5448 considerably through the use of the vpath variable to specify search
5452 2) iASL Compiler/Disassembler and Tools:
5454 iASL: Implemented support to check the access length for all fields
5456 access named Resource Descriptor fields. For example, if a resource field
5458 defined to be two bits, a warning is issued if a CreateXxxxField() is
5460 with an incorrect bit length. This is implemented for all current
5462 descriptor names. ACPICA BZ 930.
5464 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5468 iASL: Fixed a couple of issues associated with variable-length package
5469 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5471 VAR_PACKAGE when these are used as a package length. 2) Allow the
5473 opcode (in addition to PACKAGE) when validating object types for
5477 iASL: Emit statistics for all output files (instead of just the ASL input
5479 AML output). Includes listings, hex files, etc.
5481 iASL: Added -G option to the table compiler to allow the compilation of
5483 ACPI tables. The only part of a table that is required is the standard
5488 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5490 which also adds correct 64-bit support. Also, now all output filenames
5492 completely lower case.
5494 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5495 loading table files. A warning is issued for any such tables. The only
5496 exception is an FADT. This also fixes a possible fault when attempting to
5498 non-AML tables. ACPICA BZ 932.
5500 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5502 missing table terminator could cause a fault when using the -p option.
5504 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5507 3) Example Code and Data Size
5509 These are the sizes for the OS-independent acpica.lib produced by the
5510 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5511 includes the debug output trace mechanism and has a much larger code and
5515 Previous Release (VC 9.0):
5516 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5517 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5518 Current Release (VC 9.0):
5519 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5520 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5523 ----------------------------------------
5524 23 June 2011. Summary of changes for version 20110623:
5526 1) ACPI CA Core Subsystem:
5528 Updated the predefined name repair mechanism to not attempt repair of a
5530 return object if a _PSS object is present. We can only sort the _TSS
5532 package if there is no _PSS within the same scope. This is because if
5535 present, the ACPI specification dictates that the _TSS Power Dissipation
5537 is to be ignored, and therefore some BIOSs leave garbage values in the
5539 Power field(s). In this case, it is best to just return the _TSS package
5541 is. Reported by, and fixed with assistance from Fenghua Yu.
5543 Added an option to globally disable the control method return value
5545 and repair. This runtime option can be used to disable return value
5548 this is causing a problem on a particular machine. Also added an option
5550 AcpiExec (-dr) to set this disable flag.
5552 All makefiles and project files: Major changes to improve generation of
5554 tools. ACPICA BZ 912:
5555 Reduce default optimization levels to improve compatibility
5556 For Linux, add strict-aliasing=0 for gcc 4
5557 Cleanup and simplify use of command line defines
5558 Cleanup multithread library support
5559 Improve usage messages
5561 Linux-specific header: update handling of THREAD_ID and pthread. For the
5563 bit case, improve casting to eliminate possible warnings, especially with
5567 Example Code and Data Size: These are the sizes for the OS-independent
5568 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5570 version of the code includes the debug output trace mechanism and has a
5572 larger code and data size.
5574 Previous Release (VC 9.0):
5575 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5576 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5577 Current Release (VC 9.0):
5578 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5579 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5581 2) iASL Compiler/Disassembler and Tools:
5583 With this release, a new utility named "acpihelp" has been added to the
5585 package. This utility summarizes the ACPI specification chapters for the
5587 and AML languages. It generates under Linux/Unix as well as Windows, and
5588 provides the following functionality:
5589 Find/display ASL operator(s) -- with description and syntax.
5590 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5591 Find/display ACPI predefined name(s) -- with description, number
5592 of arguments, and the return value data type.
5593 Find/display AML opcode name(s) -- with opcode, arguments, and
5595 Decode/display AML opcode -- with opcode name, arguments, and
5598 Service Layers: Make multi-thread support configurable. Conditionally
5600 the multi-thread support so that threading libraries will not be linked
5603 necessary. The only tool that requires multi-thread support is AcpiExec.
5605 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5607 Bison appear to want the interface to yyerror to be a const char * (or at
5608 least this is a problem when generating iASL on some systems.) ACPICA BZ
5612 Tools: Fix for systems where O_BINARY is not defined. Only used for
5614 versions of the tools.
5616 ----------------------------------------
5617 27 May 2011. Summary of changes for version 20110527:
5619 1) ACPI CA Core Subsystem:
5621 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5623 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5624 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5625 (PSDT is now obsolete.)
5626 2) We added support for OEMx tables, signature "OEM" plus a fourth
5627 "don't care" character.
5628 3) Valid tables were encountered with a null signature, so we just
5629 gave up on validating the signature, (05/2008).
5630 4) We encountered non-AML tables such as the MADT, which caused
5631 interpreter errors and kernel faults. So now, we once again allow
5632 only SSDT, OEMx, and now, also a null signature. (05/2011).
5634 Added the missing _TDL predefined name to the global name list in order
5636 enable validation. Affects both the core ACPICA code and the iASL
5639 Example Code and Data Size: These are the sizes for the OS-independent
5640 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5642 version of the code includes the debug output trace mechanism and has a
5644 larger code and data size.
5646 Previous Release (VC 9.0):
5647 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5648 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5649 Current Release (VC 9.0):
5650 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5651 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5653 2) iASL Compiler/Disassembler and Tools:
5655 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5657 debugger command line. This adds support beyond simple integers --
5659 Strings, Buffers, and Packages. Includes support for nested packages.
5660 Increased the default command line buffer size to accommodate these
5662 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5664 Debugger/AcpiExec: Implemented support for "default" method arguments for
5666 Execute/Debug command. Now, the debugger will always invoke a control
5668 with the required number of arguments -- even if the command line
5670 none or insufficient arguments. It uses default integer values for any
5672 arguments. Also fixes a bug where only six method arguments maximum were
5673 supported instead of the required seven.
5675 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5677 also return status in order to prevent buffer overruns. See the ACPICA
5678 reference for details and syntax. ACPICA BZ 921
5680 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5681 makefiles to simplify support for the two different but similar parser
5682 generators, bison and yacc.
5684 Updated the generic unix makefile for gcc 4. The default gcc version is
5686 expected to be 4 or greater, since options specific to gcc 4 are used.
5688 ----------------------------------------
5689 13 April 2011. Summary of changes for version 20110413:
5691 1) ACPI CA Core Subsystem:
5693 Implemented support to execute a so-called "orphan" _REG method under the
5695 device. This change will force the execution of a _REG method underneath
5698 device even if there is no corresponding operation region of type
5699 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5700 compatible with Windows behavior. ACPICA BZ 875.
5702 Added more predefined methods that are eligible for automatic NULL
5704 element removal. This change adds another group of predefined names to
5707 of names that can be repaired by having NULL package elements dynamically
5708 removed. This group are those methods that return a single variable-
5710 package containing simple data types such as integers, buffers, strings.
5712 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5715 and _TZD. ACPICA BZ 914.
5717 Split and segregated all internal global lock functions to a new file,
5720 Updated internal address SpaceID for DataTable regions. Moved this
5723 id in preparation for ACPI 5.0 changes that will include some new space
5726 change should not affect user/host code.
5728 Example Code and Data Size: These are the sizes for the OS-independent
5730 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5732 the code includes the debug output trace mechanism and has a much larger
5737 Previous Release (VC 9.0):
5738 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5739 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5740 Current Release (VC 9.0):
5741 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5742 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5744 2) iASL Compiler/Disassembler and Tools:
5746 iASL/DTC: Major update for new grammar features. Allow generic data types
5748 custom ACPI tables. Field names are now optional. Any line can be split
5750 multiple lines using the continuation char (\). Large buffers now use
5752 continuation character(s) and no colon on the continuation lines. See the
5754 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5757 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5759 Since the parser stuffs a "zero" as the return value for these statements
5762 the underlying AML grammar), they were seen as "return with value" by the
5764 semantic checking. They are now seen correctly as "null" return
5767 iASL: Check if a_REG declaration has a corresponding Operation Region.
5769 check for each _REG to ensure that there is in fact a corresponding
5771 region declaration in the same scope. If not, the _REG method is not very
5773 since it probably won't be executed. ACPICA BZ 915.
5775 iASL/DTC: Finish support for expression evaluation. Added a new
5778 that implements c-style operator precedence and parenthesization. ACPICA
5782 Disassembler/DTC: Remove support for () and <> style comments in data
5785 that DTC has full expression support, we don't want to have comment
5788 start with a parentheses or a less-than symbol. Now, only the standard /*
5791 comments are supported, as well as the bracket [] comments.
5793 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5795 headers in the acpidump file. Update the header validation to support
5797 tables. Problem introduced in previous AcpiXtract version in the change
5799 support "wrong checksum" error messages emitted by acpidump utility.
5801 iASL: Add a * option to generate all template files (as a synonym for
5805 "iasl -T *" or "iasl -T ALL".
5807 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5809 abort the compiler on "fatal" errors, simply should abort the current
5811 This allows multiple compiles with a single (possibly wildcard) compiler
5814 ----------------------------------------
5815 16 March 2011. Summary of changes for version 20110316:
5817 1) ACPI CA Core Subsystem:
5819 Fixed a problem caused by a _PRW method appearing at the namespace root
5821 during the setup of wake GPEs. A fault could occur if a _PRW directly
5824 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5826 Implemented support for "spurious" Global Lock interrupts. On some
5828 global lock interrupt can occur without the pending flag being set. Upon
5831 interrupt, we now ensure that a thread is actually waiting for the lock
5833 signaling GL availability. Rafael Wysocki, Bob Moore.
5835 Example Code and Data Size: These are the sizes for the OS-independent
5837 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5839 the code includes the debug output trace mechanism and has a much larger
5844 Previous Release (VC 9.0):
5845 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5846 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5847 Current Release (VC 9.0):
5848 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5849 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5851 2) iASL Compiler/Disassembler and Tools:
5853 Implemented full support for the "SLIC" ACPI table. Includes support in
5855 header files, disassembler, table compiler, and template generator. Bob
5859 AcpiXtract: Correctly handle embedded comments and messages from
5861 Apparently some or all versions of acpidump will occasionally emit a
5864 "Wrong checksum", etc., into the dump file. This was causing problems for
5865 AcpiXtract. ACPICA BZ 905.
5867 iASL: Fix the Linux makefile by removing an inadvertent double file
5871 AcpiExec: Update installation of operation region handlers. Install one
5873 for a user-defined address space. This is used by the ASL test suite
5876 ----------------------------------------
5877 11 February 2011. Summary of changes for version 20110211:
5879 1) ACPI CA Core Subsystem:
5881 Added a mechanism to defer _REG methods for some early-installed
5883 Most user handlers should be installed before call to
5884 AcpiEnableSubsystem.
5885 However, Event handlers and region handlers should be installed after
5886 AcpiInitializeObjects. Override handlers for the "default" regions should
5888 installed early, however. This change executes all _REG methods for the
5889 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5890 chicken/egg issues between them. ACPICA BZ 848.
5892 Implemented an optimization for GPE detection. This optimization will
5894 ignore GPE registers that contain no enabled GPEs -- there is no need to
5895 read the register since this information is available internally. This
5896 becomes more important on machines with a large GPE space. ACPICA
5898 884. Lin Ming. Suggestion from Joe Liu.
5900 Removed all use of the highly unreliable FADT revision field. The
5902 number in the FADT has been found to be completely unreliable and cannot
5904 trusted. Only the actual table length can be used to infer the version.
5906 change updates the ACPICA core and the disassembler so that both no
5908 even look at the FADT version and instead depend solely upon the FADT
5911 Fix an unresolved name issue for the no-debug and no-error-message source
5912 generation cases. The _AcpiModuleName was left undefined in these cases,
5914 it is actually needed as a parameter to some interfaces. Define
5915 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5917 Split several large files (makefiles and project files updated)
5918 utglobal.c -> utdecode.c
5919 dbcomds.c -> dbmethod.c dbnames.c
5920 dsopcode.c -> dsargs.c dscontrol.c
5921 dsload.c -> dsload2.c
5922 aslanalyze.c -> aslbtypes.c aslwalks.c
5924 Example Code and Data Size: These are the sizes for the OS-independent
5925 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5926 debug version of the code includes the debug output trace mechanism and
5928 a much larger code and data size.
5930 Previous Release (VC 9.0):
5931 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5932 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5933 Current Release (VC 9.0):
5934 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5935 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5937 2) iASL Compiler/Disassembler and Tools:
5939 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5940 These are useful C-style macros with the standard definitions. ACPICA
5943 iASL/DTC: Added support for integer expressions and labels. Support for
5945 expressions for all integer fields in all ACPI tables. Support for labels
5947 "generic" portions of tables such as UEFI. See the iASL reference manual.
5949 Debugger: Added a command to display the status of global handlers. The
5950 "handlers" command will display op region, fixed event, and miscellaneous
5951 global handlers. installation status -- and for op regions, whether
5953 or user-installed handler will be used.
5955 iASL: Warn if reserved method incorrectly returns a value. Many
5957 names are defined such that they do not return a value. If implemented as
5959 method, issue a warning if such a name explicitly returns a value. ACPICA
5962 iASL: Added detection of GPE method name conflicts. Detects a conflict
5964 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5966 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5968 iASL/DTC: Fixed a couple input scanner issues with comments and line
5969 numbers. Comment remover could get confused and miss a comment ending.
5971 a problem with line counter maintenance.
5973 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5975 no need to abort on simple errors within a field definition.
5977 Debugger: Simplified the output of the help command. All help output now
5979 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5981 ----------------------------------------
5982 12 January 2011. Summary of changes for version 20110112:
5984 1) ACPI CA Core Subsystem:
5986 Fixed a race condition between method execution and namespace walks that
5988 possibly cause a fault. The problem was apparently introduced in version
5989 20100528 as a result of a performance optimization that reduces the
5992 namespace walks upon method exit by using the delete_namespace_subtree
5993 function instead of the delete_namespace_by_owner function used
5995 Bug is a missing namespace lock in the delete_namespace_subtree function.
5996 dana.myers@oracle.com
5998 Fixed several issues and a possible fault with the automatic "serialized"
5999 method support. History: This support changes a method to "serialized" on
6001 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
6002 possibility that it cannot handle reentrancy. This fix repairs a couple
6004 issues seen in the field, especially on machines with many cores:
6006 1) Delete method children only upon the exit of the last thread,
6007 so as to not delete objects out from under other running threads
6008 (and possibly causing a fault.)
6009 2) Set the "serialized" bit for the method only upon the exit of the
6010 Last thread, so as to not cause deadlock when running threads
6012 3) Cleanup the use of the AML "MethodFlags" and internal method flags
6013 so that there is no longer any confusion between the two.
6015 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
6017 Debugger: Now lock the namespace for duration of a namespace dump.
6019 issues if the namespace is changing dynamically underneath the debugger.
6020 Especially affects temporary namespace nodes, since the debugger displays
6023 Updated the ordering of include files. The ACPICA headers should appear
6024 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
6026 any necessary compiler-specific defines, etc. Affects the ACPI-related
6030 Updated all ACPICA copyrights and signons to 2011. Added the 2011
6032 to all module headers and signons, including the Linux header. This
6034 virtually every file in the ACPICA core subsystem, iASL compiler, and all
6037 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
6038 project files for VC++ 6.0 are now obsolete. New project files can be
6040 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
6043 Example Code and Data Size: These are the sizes for the OS-independent
6044 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
6045 debug version of the code includes the debug output trace mechanism and
6047 much larger code and data size.
6049 Previous Release (VC 6.0):
6050 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6051 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6052 Current Release (VC 9.0):
6053 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6054 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6056 2) iASL Compiler/Disassembler and Tools:
6058 iASL: Added generic data types to the Data Table compiler. Add "generic"
6060 types such as UINT32, String, Unicode, etc., to simplify the generation
6062 platform-defined tables such as UEFI. Lin Ming.
6064 iASL: Added listing support for the Data Table Compiler. Adds listing
6066 (-l) to display actual binary output for each line of input code.
6068 ----------------------------------------
6069 09 December 2010. Summary of changes for version 20101209:
6071 1) ACPI CA Core Subsystem:
6073 Completed the major overhaul of the GPE support code that was begun in
6075 2010. Major features include: removal of _PRW execution in ACPICA (host
6076 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
6077 changes to existing interfaces, simplification of GPE handler operation,
6079 a handful of new interfaces:
6085 One new file, evxfgpe.c to consolidate all external GPE interfaces.
6087 See the ACPICA Programmer Reference for full details and programming
6088 information. See the new section 4.4 "General Purpose Event (GPE)
6090 for a full overview, and section 8.7 "ACPI General Purpose Event
6092 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
6094 Bob Moore, Rafael Wysocki.
6096 Implemented a new GPE feature for Windows compatibility, the "Implicit
6098 GPE Notify". This feature will automatically issue a Notify(2) on a
6100 when a Wake GPE is received if there is no corresponding GPE method or
6101 handler. ACPICA BZ 870.
6103 Fixed a problem with the Scope() operator during table parse and load
6105 During load phase (table load or method execution), the scope operator
6107 not enter the target into the namespace. Instead, it should open a new
6109 at the target location. Linux BZ 19462, ACPICA BZ 882.
6111 Example Code and Data Size: These are the sizes for the OS-independent
6112 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6113 debug version of the code includes the debug output trace mechanism and
6115 much larger code and data size.
6118 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6119 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6121 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6122 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6124 2) iASL Compiler/Disassembler and Tools:
6126 iASL: Relax the alphanumeric restriction on _CID strings. These strings
6128 "bus-specific" per the ACPI specification, and therefore any characters
6130 acceptable. The only checks that can be performed are for a null string
6132 perhaps for a leading asterisk. ACPICA BZ 886.
6134 iASL: Fixed a problem where a syntax error that caused a premature EOF
6135 condition on the source file emitted a very confusing error message. The
6136 premature EOF is now detected correctly. ACPICA BZ 891.
6138 Disassembler: Decode the AccessSize within a Generic Address Structure
6140 access, word access, etc.) Note, this field does not allow arbitrary bit
6141 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
6143 New: AcpiNames utility - Example namespace dump utility. Shows an example
6145 ACPICA configuration for a minimal namespace dump utility. Uses table and
6146 namespace managers, but no AML interpreter. Does not add any
6148 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
6149 partition and configure ACPICA. ACPICA BZ 883.
6151 AML Debugger: Increased the debugger buffer size for method return
6153 Was 4K, increased to 16K. Also enhanced error messages for debugger
6155 execution, including the buffer overflow case.
6157 ----------------------------------------
6158 13 October 2010. Summary of changes for version 20101013:
6160 1) ACPI CA Core Subsystem:
6162 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
6164 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
6165 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
6167 Changed the type of the predefined namespace object _TZ from ThermalZone
6169 Device. This was found to be confusing to the host software that
6171 the various thermal zones, since _TZ is not really a ThermalZone.
6174 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
6177 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
6178 string is "Windows 2006 SP2".
6180 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
6182 code automatically repairs _HID-related strings, this type of code is no
6183 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
6186 Example Code and Data Size: These are the sizes for the OS-independent
6187 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6188 debug version of the code includes the debug output trace mechanism and
6190 much larger code and data size.
6193 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6194 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6196 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6197 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6199 2) iASL Compiler/Disassembler and Tools:
6201 iASL: Implemented additional compile-time validation for _HID strings.
6203 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
6206 the string must be exactly seven or eight characters. For both _HID and
6208 strings, all characters must be alphanumeric. ACPICA BZ 874.
6210 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
6211 descriptors that are mostly or all zeros, with the expectation that they
6213 be filled in at runtime. iASL now allows this as long as there is a
6215 tag" (name) associated with the descriptor, which gives the ASL a handle
6216 needed to modify the descriptor. ACPICA BZ 873.
6218 Added single-thread support to the generic Unix application OSL.
6220 for iASL support, this change removes the use of semaphores in the
6222 threaded ACPICA tools/applications - increasing performance. The
6223 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
6224 option. ACPICA BZ 879.
6226 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
6228 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
6230 iASL: Moved all compiler messages to a new file, aslmessages.h.
6232 ----------------------------------------
6233 15 September 2010. Summary of changes for version 20100915:
6235 1) ACPI CA Core Subsystem:
6237 Removed the AcpiOsDerivePciId OSL interface. The various host
6239 of this function were not OS-dependent and are now obsolete and can be
6240 removed from all host OSLs. This function has been replaced by
6241 AcpiHwDerivePciId, which is now part of the ACPICA core code.
6242 AcpiHwDerivePciId has been implemented without recursion. Adds one new
6243 module, hwpci.c. ACPICA BZ 857.
6245 Implemented a dynamic repair for _HID and _CID strings. The following
6246 problems are now repaired at runtime: 1) Remove a leading asterisk in the
6247 string, and 2) the entire string is uppercased. Both repairs are in
6248 accordance with the ACPI specification and will simplify host driver
6252 The ACPI_THREAD_ID type is no longer configurable, internally it is now
6253 always UINT64. This simplifies the ACPICA code, especially any printf
6255 UINT64 is the only common data type for all thread_id types across all
6256 operating systems. It is now up to the host OSL to cast the native
6258 type to UINT64 before returning the value to ACPICA (via
6260 Lin Ming, Bob Moore.
6262 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
6264 keyword is not standard across compilers, and this type allows inline to
6266 configured on a per-compiler basis. Lin Ming.
6268 Made the system global AcpiGbl_SystemAwakeAndRunning publically
6270 Added an extern for this boolean in acpixf.h. Some hosts utilize this
6272 during suspend/restore operations. ACPICA BZ 869.
6274 All code that implements error/warning messages with the "ACPI:" prefix
6276 been moved to a new module, utxferror.c.
6278 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
6280 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
6282 Example Code and Data Size: These are the sizes for the OS-independent
6283 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6284 debug version of the code includes the debug output trace mechanism and
6286 much larger code and data size.
6289 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6290 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6292 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6293 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6295 2) iASL Compiler/Disassembler and Tools:
6297 iASL/Disassembler: Write ACPI errors to stderr instead of the output
6299 This keeps the output files free of random error messages that may
6301 from within the namespace/interpreter code. Used this opportunity to
6303 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
6304 866. Lin Ming, Bob Moore.
6306 Tools: update some printfs for ansi warnings on size_t. Handle width
6308 of size_t on 32-bit versus 64-bit generations. Lin Ming.
6310 ----------------------------------------
6311 06 August 2010. Summary of changes for version 20100806:
6313 1) ACPI CA Core Subsystem:
6315 Designed and implemented a new host interface to the _OSI support code.
6317 will allow the host to dynamically add or remove multiple _OSI strings,
6319 well as install an optional handler that is called for each _OSI
6321 Also added a new AML debugger command, 'osi' to display and modify the
6323 _OSI string table, and test support in the AcpiExec utility. See the
6325 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
6327 AcpiInstallInterface - Add an _OSI string.
6328 AcpiRemoveInterface - Delete an _OSI string.
6329 AcpiInstallInterfaceHandler - Install optional _OSI handler.
6331 AcpiOsValidateInterface - no longer used.
6333 source/components/utilities/utosi.c
6335 Re-introduced the support to enable multi-byte transfers for Embedded
6336 Controller (EC) operation regions. A reported problem was found to be a
6338 in the host OS, not in the multi-byte support. Previously, the maximum
6340 size passed to the EC operation region handler was a single byte. There
6342 often EC Fields larger than one byte that need to be transferred, and it
6344 useful for the EC driver to lock these as a single transaction. This
6346 enables single transfers larger than 8 bits. This effectively changes the
6347 access to the EC space from ByteAcc to AnyAcc, and will probably require
6348 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
6350 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
6352 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
6353 prototype in acpiosxf.h had the output value pointer as a (void *).
6354 It should be a (UINT64 *). This may affect some host OSL code.
6356 Fixed a couple problems with the recently modified Linux makefiles for
6358 and AcpiExec. These new makefiles place the generated object files in the
6359 local directory so that there can be no collisions between the files that
6361 shared between them that are compiled with different options.
6363 Example Code and Data Size: These are the sizes for the OS-independent
6364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6365 debug version of the code includes the debug output trace mechanism and
6367 much larger code and data size.
6370 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6371 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6373 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6374 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6376 2) iASL Compiler/Disassembler and Tools:
6378 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
6380 namespace from and disassemble an entire group of AML files. Useful for
6381 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
6383 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
6385 iASL: Allow multiple invocations of -e option. This change allows
6387 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6391 ----------------------------------------
6392 02 July 2010. Summary of changes for version 20100702:
6394 1) ACPI CA Core Subsystem:
6396 Implemented several updates to the recently added GPE reference count
6397 support. The model for "wake" GPEs is changing to give the host OS
6399 control of these GPEs. Eventually, the ACPICA core will not execute any
6401 methods, since the host already must execute them. Also, additional
6403 were made to help ensure that the reference counts are kept in proper
6404 synchronization with reality. Rafael J. Wysocki.
6406 1) Ensure that GPEs are not enabled twice during initialization.
6407 2) Ensure that GPE enable masks stay in sync with the reference count.
6408 3) Do not inadvertently enable GPEs when writing GPE registers.
6409 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6410 interface. This interface will set or clear individual GPEs for wakeup.
6411 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6413 are now used for "runtime" GPEs only.
6415 Changed the behavior of the GPE install/remove handler interfaces. The
6418 no longer disabled during this process, as it was found to cause problems
6420 some machines. Rafael J. Wysocki.
6422 Reverted a change introduced in version 20100528 to enable Embedded
6423 Controller multi-byte transfers. This change was found to cause problems
6425 Index Fields and possibly Bank Fields. It will be reintroduced when these
6426 problems have been resolved.
6428 Fixed a problem with references to Alias objects within Package Objects.
6430 reference to an Alias within the definition of a Package was not always
6431 resolved properly. Aliases to objects like Processors, Thermal zones,
6433 were resolved to the actual object instead of a reference to the object
6436 should be. Package objects are only allowed to contain integer, string,
6437 buffer, package, and reference objects. Redhat bugzilla 608648.
6439 Example Code and Data Size: These are the sizes for the OS-independent
6440 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6441 debug version of the code includes the debug output trace mechanism and
6443 much larger code and data size.
6446 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6447 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6449 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6450 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6452 2) iASL Compiler/Disassembler and Tools:
6454 iASL: Implemented a new compiler subsystem to allow definition and
6455 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6457 are called "ACPI Data Tables", and the new compiler is the "Data Table
6458 Compiler". This compiler is intended to simplify the existing error-prone
6459 process of creating these tables for the BIOS, as well as allowing the
6460 disassembly, modification, recompilation, and override of existing ACPI
6462 tables. See the iASL User Guide for detailed information.
6464 iASL: Implemented a new Template Generator option in support of the new
6466 Table Compiler. This option will create examples of all known ACPI tables
6467 that can be used as the basis for table development. See the iASL
6468 documentation and the -T option.
6470 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6473 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6474 object files in the local directory so that there can be no collisions
6475 between the shared files between them that are generated with different
6478 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6480 the #define __APPLE__ to enable this support.
6482 ----------------------------------------
6483 28 May 2010. Summary of changes for version 20100528:
6485 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6486 available at www.acpi.info. This is primarily an errata release.
6488 1) ACPI CA Core Subsystem:
6490 Undefined ACPI tables: We are looking for the definitions for the
6492 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6494 Implemented support to enable multi-byte transfers for Embedded
6496 (EC) operation regions. Previously, the maximum data size passed to the
6498 operation region handler was a single byte. There are often EC Fields
6500 than one byte that need to be transferred, and it is useful for the EC
6502 to lock these as a single transaction. This change enables single
6504 larger than 8 bits. This effectively changes the access to the EC space
6506 ByteAcc to AnyAcc, and will probably require changes to the host OS
6508 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6510 transfers. Alexey Starikovskiy, Lin Ming
6512 Implemented a performance enhancement for namespace search and access.
6514 change enhances the performance of namespace searches and walks by adding
6516 backpointer to the parent in each namespace node. On large namespaces,
6518 change can improve overall ACPI performance by up to 9X. Adding a pointer
6520 each namespace node increases the overall size of the internal namespace
6522 about 5%, since each namespace entry usually consists of both a namespace
6523 node and an ACPI operand object. However, this is the first growth of the
6524 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6526 Implemented a performance optimization that reduces the number of
6528 walks. On control method exit, only walk the namespace if the method is
6530 to have created namespace objects outside of its local scope. Previously,
6532 entire namespace was traversed on each control method exit. This change
6534 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6537 Added support to truncate I/O addresses to 16 bits for Windows
6539 Some ASL code has been seen in the field that inadvertently has bits set
6540 above bit 15. This feature is optional and is enabled if the BIOS
6542 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6545 Added support to limit the maximum time for the ASL Sleep() operator. To
6546 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6547 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6550 Added run-time validation support for the _WDG and_WED Microsoft
6552 methods. These objects are defined by "Windows Instrumentation", and are
6554 part of the ACPI spec. ACPICA BZ 860.
6556 Expanded all statistic counters used during namespace and device
6557 initialization from 16 to 32 bits in order to support very large
6560 Replaced all instances of %d in printf format specifiers with %u since
6562 all integers in ACPICA are unsigned.
6564 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
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: 88.4K Code, 18.8K Data, 107.2K Total
6576 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6578 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6579 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6581 2) iASL Compiler/Disassembler and Tools:
6583 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6584 methods. These objects are defined by "Windows Instrumentation", and are
6586 part of the ACPI spec. ACPICA BZ 860.
6588 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6589 option will disable the tracking mechanism, which improves performance
6592 AcpiExec: Restructured the command line options into -d (disable) and -e
6595 ----------------------------------------
6596 28 April 2010. Summary of changes for version 20100428:
6598 1) ACPI CA Core Subsystem:
6600 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6601 including FADT-based and GPE Block Devices, execute any _PRW methods in
6603 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6604 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6605 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6606 Devices. Provides compatibility with other ACPI implementations. Two new
6607 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6610 Fixed a regression introduced in version 20100331 within the table
6612 where initial table loading could fail. This was introduced in the fix
6614 AcpiReallocateRootTable. Also, renamed some of fields in the table
6616 data structures to clarify their meaning and use.
6618 Fixed a possible allocation overrun during internal object copy in
6619 AcpiUtCopySimpleObject. The original code did not correctly handle the
6621 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6624 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6625 possible access beyond end-of-allocation. Also, now fully validate
6627 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6629 Example Code and Data Size: These are the sizes for the OS-independent
6630 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6631 debug version of the code includes the debug output trace mechanism and
6633 much larger code and data size.
6636 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6637 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6639 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6640 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6642 2) iASL Compiler/Disassembler and Tools:
6644 iASL: Implemented Min/Max/Len/Gran validation for address resource
6645 descriptors. This change implements validation for the address fields
6647 are common to all address-type resource descriptors. These checks are
6648 implemented: Checks for valid Min/Max, length within the Min/Max window,
6649 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6651 table 6-40 in the ACPI 4.0a specification. Also split the large
6653 and aslrestype2.c files into five new files. ACPICA BZ 840.
6655 iASL: Added support for the _Wxx predefined names. This support was
6657 and these names were not recognized by the compiler as valid predefined
6658 names. ACPICA BZ 851.
6660 iASL: Added an error for all predefined names that are defined to return
6662 value and thus must be implemented as Control Methods. These include all
6664 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6665 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6667 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6669 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6671 dynamically loaded via the Load() operator. Also cleaned up output for
6674 ta and -tc options. ACPICA BZ 853.
6676 Tests: Added a new file with examples of extended iASL error checking.
6677 Demonstrates the advanced error checking ability of the iASL compiler.
6678 Available at tests/misc/badcode.asl.
6680 ----------------------------------------
6681 31 March 2010. Summary of changes for version 20100331:
6683 1) ACPI CA Core Subsystem:
6685 Completed a major update for the GPE support in order to improve support
6687 shared GPEs and to simplify both host OS and ACPICA code. Added a
6689 count mechanism to support shared GPEs that require multiple device
6691 Several external interfaces have changed. One external interface has been
6692 removed. One new external interface was added. Most of the GPE external
6693 interfaces now use the GPE spinlock instead of the events mutex (and the
6694 Flags parameter for many GPE interfaces has been removed.) See the
6696 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6698 Wysocki. ACPICA BZ 831.
6701 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6707 Implemented write support for DataTable operation regions. These regions
6709 defined via the DataTableRegion() operator. Previously, only read support
6711 implemented. The ACPI specification allows DataTableRegions to be
6715 Implemented a new subsystem option to force a copy of the DSDT to local
6716 memory. Optionally copy the entire DSDT to local memory (instead of
6718 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6720 the original DSDT, creating the need for this option. Default is FALSE,
6724 Implemented detection of a corrupted or replaced DSDT. This change adds
6725 support to detect a DSDT that has been corrupted and/or replaced from
6727 the OS (by firmware). This is typically catastrophic for the system, but
6729 been seen on some machines. Once this problem has been detected, the DSDT
6730 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6732 Fixed two problems with AcpiReallocateRootTable during the root table
6734 When copying the root table to the new allocation, the length used was
6735 incorrect. The new size was used instead of the current table size,
6737 too much data was copied. Also, the count of available slots for ACPI
6739 was not set correctly. Alexey Starikovskiy, Bob Moore.
6741 Example Code and Data Size: These are the sizes for the OS-independent
6742 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6743 debug version of the code includes the debug output trace mechanism and
6745 much larger code and data size.
6748 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6749 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6751 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6752 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6754 2) iASL Compiler/Disassembler and Tools:
6756 iASL: Implement limited typechecking for values returned from predefined
6757 control methods. The type of any returned static (unnamed) object is now
6758 validated. For example, Return(1). ACPICA BZ 786.
6760 iASL: Fixed a predefined name object verification regression. Fixes a
6762 introduced in version 20100304. An error is incorrectly generated if a
6763 predefined name is declared as a static named object with a value defined
6764 using the keywords "Zero", "One", or "Ones". Lin Ming.
6766 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6768 reducing the requested registry access rights. ACPICA BZ 842.
6770 Disassembler: fixed a possible fault when generating External()
6772 Introduced in commit ae7d6fd: Properly handle externals with parent-
6774 (carat). Fixes a string length allocation calculation. Lin Ming.
6776 ----------------------------------------
6777 04 March 2010. Summary of changes for version 20100304:
6779 1) ACPI CA Core Subsystem:
6781 Fixed a possible problem with the AML Mutex handling function
6782 AcpiExReleaseMutex where the function could fault under the very rare
6783 condition when the interpreter has blocked, the interpreter lock is
6785 the interpreter is then reentered via the same thread, and attempts to
6786 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6790 Implemented additional configuration support for the AML "Debug Object".
6791 Output from the debug object can now be enabled via a global variable,
6792 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6794 This debug output is now available in the release version of ACPICA
6796 of just the debug version. Also, the entire debug output module can now
6798 configured out of the ACPICA build if desired. One new file added,
6799 executer/exdebug.c. Lin Ming, Bob Moore.
6801 Added header support for the ACPI MCHI table (Management Controller Host
6802 Interface Table). This table was added in ACPI 4.0, but the defining
6804 has only recently become available.
6806 Standardized output of integer values for ACPICA warnings/errors. Always
6808 0x prefix for hex output, always use %u for unsigned integer decimal
6810 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6812 invocations.) These invocations were converted from the original
6813 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6815 Example Code and Data Size: These are the sizes for the OS-independent
6816 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6817 debug version of the code includes the debug output trace mechanism and
6819 much larger code and data size.
6822 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6823 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6825 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6826 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6828 2) iASL Compiler/Disassembler and Tools:
6830 iASL: Implemented typechecking support for static (non-control method)
6831 predefined named objects that are declared with the Name() operator. For
6832 example, the type of this object is now validated to be of type Integer:
6833 Name(_BBN, 1). This change migrates the compiler to using the core
6835 name table instead of maintaining a local version. Added a new file,
6836 aslpredef.c. ACPICA BZ 832.
6838 Disassembler: Added support for the ACPI 4.0 MCHI table.
6840 ----------------------------------------
6841 21 January 2010. Summary of changes for version 20100121:
6843 1) ACPI CA Core Subsystem:
6845 Added the 2010 copyright to all module headers and signons. This affects
6846 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6847 tools/utilities, and the test suites.
6849 Implemented a change to the AcpiGetDevices interface to eliminate
6851 invocations of the _STA method. In the case where a specific _HID is
6852 requested, do not run _STA until a _HID match is found. This eliminates
6853 potentially dozens of _STA calls during a search for a particular
6855 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6857 Implemented an additional repair for predefined method return values.
6859 to repair unexpected NULL elements within returned Package objects.
6862 Integer of value zero, a NULL String, or a zero-length Buffer as
6864 ACPICA BZ 818. Lin Ming, Bob Moore.
6866 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6868 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6870 64-bit AML integers). It is now obsolete and this change removes it from
6872 ACPICA code base, replaced by UINT64. The original typedef has been
6874 for now for compatibility with existing device driver code. ACPICA BZ
6877 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6879 the parse tree object.
6881 Added additional warning options for the gcc-4 generation. Updated the
6883 accordingly. This includes some code restructuring to eliminate
6885 code, elimination of some gotos, elimination of unused return values,
6887 additional casting, and removal of redundant declarations.
6889 Example Code and Data Size: These are the sizes for the OS-independent
6890 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6891 debug version of the code includes the debug output trace mechanism and
6893 much larger code and data size.
6896 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6897 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6899 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6900 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6902 2) iASL Compiler/Disassembler and Tools:
6904 No functional changes for this release.
6906 ----------------------------------------
6907 14 December 2009. Summary of changes for version 20091214:
6909 1) ACPI CA Core Subsystem:
6911 Enhanced automatic data type conversions for predefined name repairs.
6913 change expands the automatic repairs/conversions for predefined name
6915 values to make Integers, Strings, and Buffers fully interchangeable.
6918 Buffer can be converted to a Package of Integers if necessary. The
6920 module was completely restructured. Lin Ming, Bob Moore.
6922 Implemented automatic removal of null package elements during predefined
6924 repairs. This change will automatically remove embedded and trailing NULL
6925 package elements from returned package objects that are defined to
6928 variable number of sub-packages. The driver is then presented with a
6930 with no null elements to deal with. ACPICA BZ 819.
6932 Implemented a repair for the predefined _FDE and _GTM names. The expected
6933 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6935 possible problems (both seen in the field), where a package of integers
6937 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6940 Implemented additional module-level code support. This change will
6942 execute module-level code that is not at the root of the namespace (under
6944 Device object, etc.). Now executes the code within the current scope
6946 of the root. ACPICA BZ 762. Lin Ming.
6948 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6950 problem where mutex errors can occur when running a _REG method that is
6952 the same scope as a method-defined operation region or an operation
6954 under a module-level IF block. This type of code is rare, so the problem
6956 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6958 Fixed a possible memory leak during module-level code execution. An
6960 could be leaked for each block of executed module-level code if the
6961 interpreter slack mode is enabled This change deletes any implicitly
6963 object from the module-level code block. Lin Ming.
6965 Removed messages for successful predefined repair(s). The repair
6967 was considered too wordy. Now, messages are only unconditionally emitted
6969 the return object cannot be repaired. Existing messages for successful
6970 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6973 Example Code and Data Size: These are the sizes for the OS-independent
6974 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6975 debug version of the code includes the debug output trace mechanism and
6977 much larger code and data size.
6980 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6981 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6983 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6984 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6986 2) iASL Compiler/Disassembler and Tools:
6988 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6990 were no longer automatically removed at the termination of the compile.
6992 acpiexec: Implemented the -f option to specify default region fill value.
6993 This option specifies the value used to initialize buffers that simulate
6994 operation regions. Default value is zero. Useful for debugging problems
6996 depend on a specific initial value for a region or field.
6998 ----------------------------------------
6999 12 November 2009. Summary of changes for version 20091112:
7001 1) ACPI CA Core Subsystem:
7003 Implemented a post-order callback to AcpiWalkNamespace. The existing
7004 interface only has a pre-order callback. This change adds an additional
7005 parameter for a post-order callback which will be more useful for bus
7007 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
7009 Modified the behavior of the operation region memory mapping cache for
7010 SystemMemory. Ensure that the memory mappings created for operation
7012 do not cross 4K page boundaries. Crossing a page boundary while mapping
7013 regions can cause kernel warnings on some hosts if the pages have
7015 attributes. Such regions are probably BIOS bugs, and this is the
7017 Linux BZ 14445. Lin Ming.
7019 Implemented an automatic repair for predefined methods that must return
7020 sorted lists. This change will repair (by sorting) packages returned by
7022 _PSS, and _TSS. Drivers can now assume that the packages are correctly
7024 and do not contain NULL package elements. Adds one new file,
7025 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
7027 Fixed a possible fault during predefined name validation if a return
7029 object contains NULL elements. Also adds a warning if a NULL element is
7030 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
7032 include repair or removal of all such NULL elements where possible.
7034 Implemented additional module-level executable AML code support. This
7036 will execute module-level code that is not at the root of the namespace
7037 (under a Device object, etc.) at table load time. Module-level executable
7039 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
7041 Implemented a new internal function to create Integer objects. This
7043 simplifies miscellaneous object creation code. ACPICA BZ 823.
7045 Reduced the severity of predefined repair messages, Warning to Info.
7047 the object was successfully repaired, a warning is too severe. Reduced to
7049 info message for now. These messages may eventually be changed to debug-
7053 Example Code and Data Size: These are the sizes for the OS-independent
7054 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7055 debug version of the code includes the debug output trace mechanism and
7057 much larger code and data size.
7060 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7061 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7063 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7064 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7066 2) iASL Compiler/Disassembler and Tools:
7068 iASL: Implemented Switch() with While(1) so that Break works correctly.
7070 change correctly implements the Switch operator with a surrounding
7072 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
7074 iASL: Added a message if a package initializer list is shorter than
7076 length. Adds a new remark for a Package() declaration if an initializer
7078 exists, but is shorter than the declared length of the package. Although
7079 technically legal, this is probably a coding error and it is seen in the
7080 field. ACPICA BZ 815. Lin Ming, Bob Moore.
7082 iASL: Fixed a problem where the compiler could fault after the maximum
7084 of errors was reached (200).
7086 acpixtract: Fixed a possible warning for pointer cast if the compiler
7088 level set very high.
7090 ----------------------------------------
7091 13 October 2009. Summary of changes for version 20091013:
7093 1) ACPI CA Core Subsystem:
7095 Fixed a problem where an Operation Region _REG method could be executed
7097 than once. If a custom address space handler is installed by the host
7099 the "initialize operation regions" phase of the ACPICA initialization,
7101 _REG methods for that address space could be executed twice. This change
7102 fixes the problem. ACPICA BZ 427. Lin Ming.
7104 Fixed a possible memory leak for the Scope() ASL operator. When the exact
7105 invocation of "Scope(\)" is executed (change scope to root), one internal
7106 operand object was leaked. Lin Ming.
7108 Implemented a run-time repair for the _MAT predefined method. If the _MAT
7109 return value is defined as a Field object in the AML, and the field
7110 size is less than or equal to the default width of an integer (32 or
7112 can incorrectly return an Integer instead of a Buffer. ACPICA now
7113 automatically repairs this problem. ACPICA BZ 810.
7115 Implemented a run-time repair for the _BIF and _BIX predefined methods.
7117 "OEM Information" field is often incorrectly returned as an Integer with
7118 value zero if the field is not supported by the platform. This is due to
7120 ambiguity in the ACPI specification. The field should always be a string.
7121 ACPICA now automatically repairs this problem by returning a NULL string
7122 within the returned Package. ACPICA BZ 807.
7124 Example Code and Data Size: These are the sizes for the OS-independent
7125 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7126 debug version of the code includes the debug output trace mechanism and
7128 much larger code and data size.
7131 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7132 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7134 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7135 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7137 2) iASL Compiler/Disassembler and Tools:
7139 Disassembler: Fixed a problem where references to external symbols that
7140 contained one or more parent-prefixes (carats) were not handled
7142 possibly causing a fault. ACPICA BZ 806. Lin Ming.
7144 Disassembler: Restructured the code so that all functions that handle
7145 external symbols are in a single module. One new file is added,
7148 AML Debugger: Added a max count argument for the Batch command (which
7149 executes multiple predefined methods within the namespace.)
7151 iASL: Updated the compiler documentation (User Reference.) Available at
7152 http://www.acpica.org/documentation/. ACPICA BZ 750.
7154 AcpiXtract: Updated for Lint and other formatting changes. Close all open
7157 ----------------------------------------
7158 03 September 2009. Summary of changes for version 20090903:
7160 1) ACPI CA Core Subsystem:
7162 For Windows Vista compatibility, added the automatic execution of an _INI
7163 method located at the namespace root (\_INI). This method is executed at
7164 table load time. This support is in addition to the automatic execution
7166 \_SB._INI. Lin Ming.
7168 Fixed a possible memory leak in the interpreter for AML package objects
7170 the package initializer list is longer than the defined size of the
7172 This apparently can only happen if the BIOS changes the package size on
7174 fly (seen in a _PSS object), as ASL compilers do not allow this. The
7175 interpreter will truncate the package to the defined size (and issue an
7177 message), but previously could leave the extra objects undeleted if they
7179 pre-created during the argument processing (such is the case if the
7181 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
7183 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
7184 This has been reported in the field. Previously, ACPICA would zero out
7186 buffer/string. Now, the operation is treated as a noop. Provides Windows
7187 compatibility. ACPICA BZ 803. Lin Ming.
7189 Removed an extraneous error message for ASL constructs of the form
7190 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
7192 are seen in many BIOSs and are once again treated as NOOPs and no error
7194 emitted when they are encountered. ACPICA BZ 785.
7196 Fixed an extraneous warning message if a _DSM reserved method returns a
7197 Package object. _DSM can return any type of object, so validation on the
7198 return type cannot be performed. ACPICA BZ 802.
7200 Example Code and Data Size: These are the sizes for the OS-independent
7201 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7202 debug version of the code includes the debug output trace mechanism and
7204 much larger code and data size.
7207 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7208 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7210 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7211 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7213 2) iASL Compiler/Disassembler and Tools:
7215 iASL: Fixed a problem with the use of the Alias operator and Resource
7216 Templates. The correct alias is now constructed and no error is emitted.
7219 iASL: Implemented the -I option to specify additional search directories
7221 include files. Allows multiple additional search paths for include files.
7222 Directories are searched in the order specified on the command line
7224 the local directory is searched.) ACPICA BZ 800.
7226 iASL: Fixed a problem where the full pathname for include files was not
7227 emitted for warnings/errors. This caused the IDE support to not work
7228 properly. ACPICA BZ 765.
7230 iASL: Implemented the -@ option to specify a Windows-style response file
7231 containing additional command line options. ACPICA BZ 801.
7233 AcpiExec: Added support to load multiple AML files simultaneously (such
7236 DSDT and multiple SSDTs). Also added support for wildcards within the AML
7237 pathname. These features allow all machine tables to be easily loaded and
7238 debugged together. ACPICA BZ 804.
7240 Disassembler: Added missing support for disassembly of HEST table Error
7244 ----------------------------------------
7245 30 July 2009. Summary of changes for version 20090730:
7247 The ACPI 4.0 implementation for ACPICA is complete with this release.
7249 1) ACPI CA Core Subsystem:
7251 ACPI 4.0: Added header file support for all new and changed ACPI tables.
7252 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
7254 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
7256 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
7258 have been some ACPI 4.0 changes to other existing tables. Split the large
7259 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
7261 ACPI 4.0: Implemented predefined name validation for all new names. There
7263 31 new names in ACPI 4.0. The predefined validation module was split into
7265 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
7267 Implemented support for so-called "module-level executable code". This is
7268 executable AML code that exists outside of any control method and is
7270 to be executed at table load time. Although illegal since ACPI 2.0, this
7272 of code still exists and is apparently still being created. Blocks of
7274 code are now detected and executed as intended. Currently, the code
7276 must exist under either an If, Else, or While construct; these are the
7277 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
7279 Implemented an automatic dynamic repair for predefined names that return
7280 nested Package objects. This applies to predefined names that are defined
7282 return a variable-length Package of sub-packages. If the number of sub-
7283 packages is one, BIOS code is occasionally seen that creates a simple
7285 package with no sub-packages. This code attempts to fix the problem by
7286 wrapping a new package object around the existing package. These methods
7288 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
7292 Fixed a regression introduced in 20090625 for the AcpiGetDevices
7294 The _HID/_CID matching was broken and no longer matched IDs correctly.
7298 Fixed a problem with AcpiReset where the reset would silently fail if the
7299 register was one of the protected I/O ports. AcpiReset now bypasses the
7301 validation mechanism. This may eventually be driven into the
7305 Fixed a regression related to the recent update of the AcpiRead/Write
7306 interfaces. A sleep/suspend could fail if the optional PM2 Control
7308 does not exist during an attempt to write the Bus Master Arbitration bit.
7309 (However, some hosts already delete the code that writes this bit, and
7311 code may in fact be obsolete at this date.) ACPICA BZ 799.
7313 Fixed a problem where AcpiTerminate could fault if inadvertently called
7315 in succession. ACPICA BZ 795.
7317 Example Code and Data Size: These are the sizes for the OS-independent
7318 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7319 debug version of the code includes the debug output trace mechanism and
7321 much larger code and data size.
7324 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7325 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7327 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7328 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7330 2) iASL Compiler/Disassembler and Tools:
7332 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
7333 changes to existing tables. ACPICA BZ 775.
7335 ----------------------------------------
7336 25 June 2009. Summary of changes for version 20090625:
7338 The ACPI 4.0 Specification was released on June 16 and is available at
7339 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
7340 continue for the next few releases.
7342 1) ACPI CA Core Subsystem:
7344 ACPI 4.0: Implemented interpreter support for the IPMI operation region
7345 address space. Includes support for bi-directional data buffers and an
7347 address space handler (to be installed by an IPMI device driver.) ACPICA
7351 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
7353 support in both the header files and the disassembler.
7355 Completed a major update for the AcpiGetObjectInfo external interface.
7357 - Support for variable, unlimited length HID, UID, and CID strings.
7358 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
7360 - Call the _SxW power methods on behalf of a device object.
7361 - Determine if a device is a PCI root bridge.
7362 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
7363 These changes will require an update to all callers of this interface.
7365 the updated ACPICA Programmer Reference for details. One new source file
7367 been added - utilities/utids.c. ACPICA BZ 368, 780.
7369 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
7370 transfers. The Value parameter has been extended from 32 bits to 64 bits
7372 order to support new ACPI 4.0 tables. These changes will require an
7375 all callers of these interfaces. See the ACPICA Programmer Reference for
7376 details. ACPICA BZ 768.
7378 Fixed several problems with AcpiAttachData. The handler was not invoked
7380 the host node was deleted. The data sub-object was not automatically
7382 when the host node was deleted. The interface to the handler had an
7384 parameter, this was removed. ACPICA BZ 778.
7386 Enhanced the function that dumps ACPI table headers. All non-printable
7387 characters in the string fields are now replaced with '?' (Signature,
7389 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7390 these fields are occasionally seen in the field. ACPICA BZ 788.
7392 Fixed a problem with predefined method repair code where the code that
7393 attempts to repair/convert an object of incorrect type is only executed
7395 the first time the predefined method is called. The mechanism that
7397 warnings on subsequent calls was interfering with the repair mechanism.
7400 Fixed a possible memory leak in the predefined validation/repair code
7403 buffer is automatically converted to an expected string object.
7405 Removed obsolete 16-bit files from the distribution and from the current
7407 tree head. ACPICA BZ 776.
7409 Example Code and Data Size: These are the sizes for the OS-independent
7410 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7411 debug version of the code includes the debug output trace mechanism and
7413 much larger code and data size.
7416 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7417 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7419 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7420 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7422 2) iASL Compiler/Disassembler and Tools:
7424 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7425 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7427 ACPI 4.0: iASL - implemented compile-time validation support for all new
7428 predefined names and control methods (31 total). ACPICA BZ 769.
7430 ----------------------------------------
7431 21 May 2009. Summary of changes for version 20090521:
7433 1) ACPI CA Core Subsystem:
7435 Disabled the preservation of the SCI enable bit in the PM1 control
7437 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7440 a "preserved" bit - "OSPM always preserves this bit position", section
7441 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7442 because the bit needs to be explicitly set by the OS as a workaround. No
7443 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7444 attempts to preserve this bit.
7446 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7447 incorrectly formed _PRT package could cause a fault. Added validation to
7448 ensure that each package element is actually a sub-package.
7450 Implemented a new interface to install or override a single control
7452 AcpiInstallMethod. This interface is useful when debugging in order to
7454 an existing method or to install a missing method without having to
7456 the entire ACPI table. See the ACPICA Programmer Reference for use and
7457 examples. Lin Ming, Bob Moore.
7459 Fixed several reference count issues with the DdbHandle object that is
7460 created from a Load or LoadTable operator. Prevent premature deletion of
7462 object. Also, mark the object as invalid once the table has been
7464 This is needed because the handle itself may not be deleted after the
7466 unload, depending on whether it has been stored in a named object by the
7469 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7470 mutexes of the same sync level are acquired but then not released in
7472 opposite order, the internally maintained Current Sync Level becomes
7474 and can cause subsequent execution errors. ACPICA BZ 471.
7476 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7477 specification has been changed to make the SyncLevel for mutex objects
7479 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7481 same as the current sync level. This makes more sense than the previous
7483 (SyncLevel less than or equal). This change updates the code to match the
7486 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7488 (local) cache must be locked during all cache object deletions. Andrew
7491 Updated the Load operator to use operation region interfaces. This
7493 direct memory mapping with region access calls. Now, all region accesses
7495 through the installed region handler as they should.
7497 Simplified and optimized the NsGetNextNode function. Reduced parameter
7499 and reduced code for this frequently used function.
7501 Example Code and Data Size: These are the sizes for the OS-independent
7502 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7503 debug version of the code includes the debug output trace mechanism and
7505 much larger code and data size.
7508 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7509 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7511 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7512 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7514 2) iASL Compiler/Disassembler and Tools:
7516 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7518 with sub-table disassembly and handling invalid sub-tables. Attempt
7520 after an invalid sub-table ID.
7522 ----------------------------------------
7523 22 April 2009. Summary of changes for version 20090422:
7525 1) ACPI CA Core Subsystem:
7527 Fixed a compatibility issue with the recently released I/O port
7529 mechanism. For windows compatibility, 1) On a port protection violation,
7530 simply ignore the request and do not return an exception (allow the
7532 method to continue execution.) 2) If only part of the request overlaps a
7533 protected port, read/write the individual ports that are not protected.
7537 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7539 breaks into the AML debugger if the debugger is present. This matches the
7540 ACPI-defined behavior.
7542 Fixed several possible warnings related to the use of the configurable
7543 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7544 pointer with no warnings. Also fixes several warnings in printf-like
7545 statements for the 64-bit build when the type is configured as a pointer.
7548 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7550 warning options.) Examples include printf formats, aliasing, unused
7552 missing prototypes, missing switch default statements, use of non-ANSI
7553 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7555 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7557 Example Code and Data Size: These are the sizes for the OS-independent
7558 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7559 debug version of the code includes the debug output trace mechanism and
7561 much larger code and data size.
7564 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7565 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7567 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7568 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7570 2) iASL Compiler/Disassembler and Tools:
7572 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7577 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7579 correctly digest Windows/DOS formatted files (with CR/LF).
7581 iASL: Added a new option for "quiet mode" (-va) that produces only the
7582 compilation summary, not individual errors and warnings. Useful for large
7585 AcpiExec: Implemented a new option (-z) to enable a forced
7587 timeout that can be used to detect hang conditions during execution of
7589 code (includes both internal semaphores and AML-defined mutexes and
7592 Added new makefiles for the generation of acpica in a generic unix-like
7593 environment. These makefiles are intended to generate the acpica tools
7595 utilities from the original acpica git source tree structure.
7597 Test Suites: Updated and cleaned up the documentation files. Updated the
7598 copyrights to 2009, affecting all source files. Use the new version of
7600 with quiet mode. Increased the number of available semaphores in the
7602 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7604 an alternate implementation of the semaphore timeout to allow aslts to
7605 execute fully on Cygwin.
7607 ----------------------------------------
7608 20 March 2009. Summary of changes for version 20090320:
7610 1) ACPI CA Core Subsystem:
7612 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7614 unloads. Added a reader/writer locking mechanism to allow multiple
7616 namespace walks (readers), but block a dynamic table unload until it can
7618 exclusive write access to the namespace. This fixes a problem where a
7620 unload could (possibly catastrophically) delete the portion of the
7622 that is currently being examined by a walk. Adds a new file, utlock.c,
7624 implements the reader/writer lock mechanism. ACPICA BZ 749.
7626 Fixed a regression introduced in version 20090220 where a change to the
7628 handling could cause the ACPICA subsystem to access non-existent I/O
7631 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7633 FADT can contain both 32-bit and 64-bit versions of these addresses.
7634 Previously, the 64-bit versions were favored, meaning that if both 32 and
7636 versions were valid, but not equal, the 64-bit version was used. This was
7637 found to cause some machines to fail. Now, in this case, the 32-bit
7639 is used instead. This now matches the Windows behavior.
7641 Implemented a new mechanism to protect certain I/O ports. Provides
7643 compatibility and protects the standard PC I/O ports from access via AML
7644 code. Adds a new file, hwvalid.c
7646 Fixed a possible extraneous warning message from the FADT support. The
7647 message warns of a 32/64 length mismatch between the legacy and GAS
7648 definitions for a register.
7650 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7652 made obsolete by the port protection mechanism above. It was previously
7654 to validate the entire address range of an operation region, which could
7656 incorrect if the range included illegal ports, but fields within the
7657 operation region did not actually access those ports. Validation is now
7658 performed on a per-field basis instead of the entire region.
7660 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7661 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7663 means a read/modify/write when writing to the register. However, for
7665 registers, writing a one means clear the event. Writing a zero means
7667 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7669 and the ACPICA code now simply always writes a zero to the ignored bit.
7671 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7673 per the ACPI specification, for the control registers, preserve
7674 (read/modify/write) all bits that are defined as either reserved or
7677 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7678 When reading the register, zero the write-only bits as per the ACPI spec.
7679 ACPICA BZ 443. Lin Ming.
7681 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7682 wants to reply true to this request. The Windows strings are the only
7684 through the AML that are tested and known to work properly.
7687 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7688 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7690 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7691 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7693 2) iASL Compiler/Disassembler and Tools:
7695 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7699 ----------------------------------------
7700 20 February 2009. Summary of changes for version 20090220:
7702 1) ACPI CA Core Subsystem:
7704 Optimized the ACPI register locking. Removed locking for reads from the
7706 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7708 not required when reading the single-bit registers. The
7709 AcpiGetRegisterUnlocked function is no longer needed and has been
7711 This will improve performance for reads on these registers. ACPICA BZ
7714 Fixed the parameter validation for AcpiRead/Write. Now return
7715 AE_BAD_PARAMETER if the input register pointer is null, and
7718 the register has an address of zero. Previously, these cases simply
7720 AE_OK. For optional registers such as PM1B status/enable/control, the
7722 should check for a valid register address before calling. ACPICA BZ 748.
7724 Renamed the external ACPI bit register access functions. Renamed
7725 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7726 functions. The new names are AcpiReadBitRegister and
7727 AcpiWriteBitRegister.
7728 Also, restructured the code for these functions by simplifying the code
7730 and condensing duplicate code to reduce code size.
7732 Added new functions to transparently handle the possibly split PM1 A/B
7733 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7735 now handle the split registers for PM1 Status, Enable, and Control.
7740 Added a function to handle the PM1 control registers,
7741 AcpiHwWritePm1Control.
7742 This function writes both of the PM1 control registers (A/B). These
7744 are different than the PM1 A/B status and enable registers in that
7746 values can be written to the A/B registers. Most notably, the SLP_TYP
7748 can be different, as per the values returned from the _Sx predefined
7751 Removed an extra register write within AcpiHwClearAcpiStatus. This
7753 was writing an optional PM1B status register twice. The existing call to
7755 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7757 register. ACPICA BZ 751.
7759 Split out the PM1 Status registers from the FADT. Added new globals for
7761 registers (A/B), similar to the way the PM1 Enable registers are handled.
7762 Instead of overloading the FADT Event Register blocks. This makes the
7764 clearer and less prone to error.
7766 Fixed the warning message for when the platform contains too many ACPI
7768 for the default size of the global root table data structure. The
7770 for the truncation value was incorrect.
7772 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7773 obsolete macro, since it is now a simple reference to ->common.type.
7775 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7777 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7778 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7779 simply SLEEP_TYPE. ACPICA BZ 754.
7781 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7782 function is only needed on 64-bit host operating systems and is thus not
7783 included for 32-bit hosts.
7785 Debug output: print the input and result for invocations of the _OSI
7787 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7789 verbosity of this debug level. Len Brown.
7791 Example Code and Data Size: These are the sizes for the OS-independent
7792 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7793 debug version of the code includes the debug output trace mechanism and
7795 much larger code and data size.
7798 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7799 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7801 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7802 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7804 2) iASL Compiler/Disassembler and Tools:
7806 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7807 various legal performance profiles.
7809 ----------------------------------------
7810 23 January 2009. Summary of changes for version 20090123:
7812 1) ACPI CA Core Subsystem:
7814 Added the 2009 copyright to all module headers and signons. This affects
7815 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7816 the tools/utilities.
7818 Implemented a change to allow the host to override any ACPI table,
7820 dynamically loaded tables. Previously, only the DSDT could be replaced by
7822 host. With this change, the AcpiOsTableOverride interface is called for
7824 table found in the RSDT/XSDT during ACPICA initialization, and also
7826 a table is dynamically loaded via the AML Load operator.
7828 Updated FADT flag definitions, especially the Boot Architecture flags.
7830 Debugger: For the Find command, automatically pad the input ACPI name
7832 underscores if the name is shorter than 4 characters. This enables a
7834 with the actual namespace entry which is itself padded with underscores.
7836 Example Code and Data Size: These are the sizes for the OS-independent
7837 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7838 debug version of the code includes the debug output trace mechanism and
7840 much larger code and data size.
7843 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7844 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7846 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7847 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7849 2) iASL Compiler/Disassembler and Tools:
7851 Fix build error under Bison-2.4.
7853 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7855 flags. Now decode all flags, regardless of the FADT version. Flag output
7856 includes the FADT version which first defined each flag.
7858 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7860 DSDT). Windows only.
7862 ----------------------------------------
7863 04 December 2008. Summary of changes for version 20081204:
7865 1) ACPI CA Core Subsystem:
7867 The ACPICA Programmer Reference has been completely updated and revamped
7869 this release. This includes updates to the external interfaces, OSL
7870 interfaces, the overview sections, and the debugger reference.
7872 Several new ACPICA interfaces have been implemented and documented in the
7873 programmer reference:
7874 AcpiReset - Writes the reset value to the FADT-defined reset register.
7875 AcpiDisableAllGpes - Disable all available GPEs.
7876 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7877 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7878 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7879 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7880 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7882 Most of the public ACPI hardware-related interfaces have been moved to a
7884 file, components/hardware/hwxface.c
7886 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7887 register lengths within the FADT are now used, and the low level ACPI
7888 register access no longer hardcodes the ACPI register lengths. Given that
7889 there may be some risk in actually trusting the FADT register lengths, a
7891 time option was added to fall back to the default hardcoded lengths if
7893 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7894 option is set to true for now, and a warning is issued if a suspicious
7896 register length is overridden with the default value.
7898 Fixed a reference count issue in NsRepairObject. This problem was
7900 in version 20081031 as part of a fix to repair Buffer objects within
7903 Added semaphore support to the Linux/Unix application OS-services layer
7904 (OSL). ACPICA BZ 448. Lin Ming.
7906 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7908 be implemented in the OSL, or will binary semaphores be used instead.
7910 Example Code and Data Size: These are the sizes for the OS-independent
7911 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7912 debug version of the code includes the debug output trace mechanism and
7914 much larger code and data size.
7917 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7918 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7920 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7921 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7923 2) iASL Compiler/Disassembler and Tools:
7925 iASL: Completed the '-e' option to include additional ACPI tables in
7928 aid with disassembly and External statement generation. ACPICA BZ 742.
7932 iASL: Removed the "named object in while loop" error. The compiler cannot
7933 determine how many times a loop will execute. ACPICA BZ 730.
7935 Disassembler: Implemented support for FADT revision 2 (MS extension).
7939 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7942 ----------------------------------------
7943 31 October 2008. Summary of changes for version 20081031:
7945 1) ACPI CA Core Subsystem:
7947 Restructured the ACPICA header files into public/private. acpi.h now
7949 only the "public" acpica headers. All other acpica headers are "private"
7951 should not be included by acpica users. One new file, accommon.h is used
7953 include the commonly used private headers for acpica code generation.
7955 plans include moving all private headers to a new subdirectory.
7957 Implemented an automatic Buffer->String return value conversion for
7958 predefined ACPI methods. For these methods (such as _BIF), added
7960 conversion for return objects that are required to be a String, but a
7962 was found instead. This can happen when reading string battery data from
7964 operation region, because it used to be difficult to convert the data
7966 buffer to string from within the ASL. Ensures that the host OS is
7968 with a valid null-terminated string. Linux BZ 11822.
7970 Updated the FACS waking vector interfaces. Split
7971 AcpiSetFirmwareWakingVector
7972 into two: one for the 32-bit vector, another for the 64-bit vector. This
7974 required because the host OS must setup the wake much differently for
7976 vector (real vs. protected mode, etc.) and the interface itself should
7979 deciding which vector to use. Also, eliminated the
7980 GetFirmwareWakingVector
7981 interface, as it served no purpose (only the firmware reads the vector,
7983 only writes the vector.) ACPICA BZ 731.
7985 Implemented a mechanism to escape infinite AML While() loops. Added a
7987 counter to force exit from AML While loops if the count becomes too
7989 This can occur in poorly written AML when the hardware does not respond
7990 within a while loop and the loop does not implement a timeout. The
7992 loop count is configurable. A new exception code is returned when a loop
7994 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7996 Optimized the execution of AML While loops. Previously, a control state
7997 object was allocated and freed for each execution of the loop. The
7998 optimization is to simply reuse the control state for each iteration.
8000 speeds up the raw loop execution time by about 5%.
8002 Enhanced the implicit return mechanism. For Windows compatibility, return
8004 implicit integer of value zero for methods that contain no executable
8006 Such methods are seen in the field as stubs (presumably), and can cause
8007 drivers to fail if they expect a return value. Lin Ming.
8009 Allow multiple backslashes as root prefixes in namepaths. In a fully
8010 qualified namepath, allow multiple backslash prefixes. This can happen
8012 is seen in the field) because of the use of a double-backslash in strings
8013 (since backslash is the escape character) causing confusion. ACPICA BZ
8017 Emit a warning if two different FACS or DSDT tables are discovered in the
8018 FADT. Checks if there are two valid but different addresses for the FACS
8020 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
8022 Consolidated the method argument count validation code. Merged the code
8024 validates control method argument counts into the predefined validation
8025 module. Eliminates possible multiple warnings for incorrect argument
8028 Implemented ACPICA example code. Includes code for ACPICA initialization,
8029 handler installation, and calling a control method. Available at
8030 source/tools/examples.
8032 Added a global pointer for FACS table to simplify internal FACS access.
8034 the global pointer instead of using AcpiGetTableByIndex for each FACS
8036 This simplifies the code for the Global Lock and the Firmware Waking
8039 Example Code and Data Size: These are the sizes for the OS-independent
8040 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8041 debug version of the code includes the debug output trace mechanism and
8043 much larger code and data size.
8046 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8047 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8049 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
8050 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
8052 2) iASL Compiler/Disassembler and Tools:
8054 iASL: Improved disassembly of external method calls. Added the -e option
8056 allow the inclusion of additional ACPI tables to help with the
8059 method invocations and the generation of external declarations during the
8060 disassembly. Certain external method invocations cannot be disassembled
8061 properly without the actual declaration of the method. Use the -e option
8063 include the table where the external method(s) are actually declared.
8065 useful for disassembling SSDTs that make method calls back to the master
8066 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
8068 -e dsdt.aml ssdt1.aml
8070 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
8071 problem where the use of an alias within a namepath would result in a not
8072 found error or cause the compiler to fault. Also now allows forward
8073 references from the Alias operator itself. ACPICA BZ 738.
8075 ----------------------------------------
8076 26 September 2008. Summary of changes for version 20080926:
8078 1) ACPI CA Core Subsystem:
8080 Designed and implemented a mechanism to validate predefined ACPI methods
8082 objects. This code validates the predefined ACPI objects (objects whose
8084 start with underscore) that appear in the namespace, at the time they are
8085 evaluated. The argument count and the type of the returned object are
8086 validated against the ACPI specification. The purpose of this validation
8088 to detect problems with the BIOS-implemented predefined ACPI objects
8090 the results are returned to the ACPI-related drivers. Future enhancements
8092 include actual repair of incorrect return objects where possible. Two new
8093 files are nspredef.c and acpredef.h.
8095 Fixed a fault in the AML parser if a memory allocation fails during the
8097 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
8099 Fixed an issue with implicit return compatibility. This change improves
8101 implicit return mechanism to be more compatible with the MS interpreter.
8103 Ming, ACPICA BZ 349.
8105 Implemented support for zero-length buffer-to-string conversions. Allow
8107 length strings during interpreter buffer-to-string conversions. For
8109 during the ToDecimalString and ToHexString operators, as well as implicit
8110 conversions. Fiodor Suietov, ACPICA BZ 585.
8112 Fixed two possible memory leaks in the error exit paths of
8113 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
8115 similar in that they use a stack of state objects in order to eliminate
8116 recursion. The stack must be fully unwound and deallocated if an error
8117 occurs. Lin Ming. ACPICA BZ 383.
8119 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
8121 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
8122 Moore ACPICA BZ 442.
8124 Removed the obsolete version number in module headers. Removed the
8125 "$Revision" number that appeared in each module header. This version
8127 was useful under SourceSafe and CVS, but has no meaning under git. It is
8129 only incorrect, it could also be misleading.
8131 Example Code and Data Size: These are the sizes for the OS-independent
8132 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8133 debug version of the code includes the debug output trace mechanism and
8135 much larger code and data size.
8138 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8139 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8141 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8142 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8144 ----------------------------------------
8145 29 August 2008. Summary of changes for version 20080829:
8147 1) ACPI CA Core Subsystem:
8149 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
8150 Reference. Changes include the elimination of cheating on the Object
8152 for the DdbHandle subtype, addition of a reference class field to
8153 differentiate the various reference types (instead of an AML opcode), and
8155 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
8157 Reduce an error to a warning for an incorrect method argument count.
8158 Previously aborted with an error if too few arguments were passed to a
8159 control method via the external ACPICA interface. Now issue a warning
8161 and continue. Handles the case where the method inadvertently declares
8163 many arguments, but does not actually use the extra ones. Applies mainly
8165 the predefined methods. Lin Ming. Linux BZ 11032.
8167 Disallow the evaluation of named object types with no intrinsic value.
8169 AE_TYPE for objects that have no value and therefore evaluation is
8171 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
8173 these types were allowed, but an exception would be generated at some
8175 during the evaluation. Now, the error is generated up front.
8177 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
8178 (nsnames.c). Fixes a leak in the error exit path.
8180 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
8182 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
8184 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
8187 Removed obsolete and/or unused exception codes from the acexcep.h header.
8188 There is the possibility that certain device drivers may be affected if
8190 use any of these exceptions.
8192 The ACPICA documentation has been added to the public git source tree,
8194 acpica/documents. Included are the ACPICA programmer reference, the iASL
8195 compiler reference, and the changes.txt release logfile.
8197 Example Code and Data Size: These are the sizes for the OS-independent
8198 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8199 debug version of the code includes the debug output trace mechanism and
8201 much larger code and data size.
8204 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8205 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8207 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8208 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8210 2) iASL Compiler/Disassembler and Tools:
8212 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
8213 defines _SCP with 3 arguments. Previous versions defined it with only 1
8214 argument. iASL now allows both definitions.
8216 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
8218 length subtables when disassembling ACPI tables. Also fixed a couple of
8219 errors where a full 16-bit table type field was not extracted from the
8223 acpisrc: Improve comment counting mechanism for generating source code
8224 statistics. Count first and last lines of multi-line comments as
8226 not comment lines. Handle Linux legal header in addition to standard
8230 ----------------------------------------
8232 29 July 2008. Summary of changes for version 20080729:
8234 1) ACPI CA Core Subsystem:
8236 Fix a possible deadlock in the GPE dispatch. Remove call to
8237 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
8239 to acquire the GPE lock but can deadlock since the GPE lock is already
8241 at dispatch time. This code was introduced in version 20060831 as a
8243 to Linux BZ 6881 and has since been removed from Linux.
8245 Add a function to dereference returned reference objects. Examines the
8247 object from a call to AcpiEvaluateObject. Any Index or RefOf references
8249 automatically dereferenced in an attempt to return something useful
8251 reference types cannot be converted into an external ACPI_OBJECT.)
8253 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
8255 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
8256 subtables for the MADT and one new subtable for the SRAT. Includes
8257 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
8259 Specification, June 2008.
8261 Additional error checking for pathname utilities. Add error check after
8263 calls to AcpiNsGetPathnameLength. Add status return from
8264 AcpiNsBuildExternalPath and check after all calls. Add parameter
8266 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
8268 Return status from the global init function AcpiUtGlobalInitialize. This
8270 used by both the kernel subsystem and the utilities such as iASL
8272 The function could possibly fail when the caches are initialized. Yang
8275 Add a function to decode reference object types to strings. Created for
8276 improved error messages.
8278 Improve object conversion error messages. Better error messages during
8280 conversion from internal to the external ACPI_OBJECT. Used for external
8282 to AcpiEvaluateObject.
8284 Example Code and Data Size: These are the sizes for the OS-independent
8285 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8286 debug version of the code includes the debug output trace mechanism and
8288 much larger code and data size.
8291 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8292 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8294 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8295 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8297 2) iASL Compiler/Disassembler and Tools:
8299 Debugger: fix a possible hang when evaluating non-methods. Fixes a
8301 introduced in version 20080701. If the object being evaluated (via
8303 command) is not a method, the debugger can hang while trying to obtain
8305 existent parameters.
8307 iASL: relax error for using reserved "_T_x" identifiers. These names can
8308 appear in a disassembled ASL file if they were emitted by the original
8309 compiler. Instead of issuing an error or warning and forcing the user to
8310 manually change these names, issue a remark instead.
8312 iASL: error if named object created in while loop. Emit an error if any
8314 object is created within a While loop. If allowed, this code will
8317 run-time error on the second iteration of the loop when an attempt is
8320 create the same named object twice. ACPICA bugzilla 730.
8322 iASL: Support absolute pathnames for include files. Add support for
8324 pathnames within the Include operator. previously, only relative
8328 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
8330 The ACPI spec requires one interrupt minimum. BZ 423
8332 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
8333 Handles the case for the Interrupt Resource Descriptor where
8334 the ResourceSource argument is omitted but ResourceSourceIndex
8335 is present. Now leave room for the Index. BZ 426
8337 iASL: Prevent error message if CondRefOf target does not exist. Fixes
8339 where an error message is emitted if the target does not exist. BZ 516
8341 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
8342 (get ACPI tables on Windows). This was apparently broken in version
8345 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
8347 the EOF happens immediately after the last table in the input file. Print
8348 completion message. Previously, no message was displayed in this case.
8350 ----------------------------------------
8351 01 July 2008. Summary of changes for version 20080701:
8353 0) Git source tree / acpica.org
8355 Fixed a problem where a git-clone from http would not transfer the entire
8358 1) ACPI CA Core Subsystem:
8360 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
8361 enable bit. Now performs a read-change-write of the enable register
8363 of simply writing out the cached enable mask. This will prevent
8365 enabling of GPEs if a rogue GPE is received during initialization (before
8367 handlers are installed.)
8369 Implemented a copy for dynamically loaded tables. Previously, dynamically
8370 loaded tables were simply mapped - but on some machines this memory is
8371 corrupted after suspend. Now copy the table to a local buffer. For the
8372 OpRegion case, added checksum verify. Use the table length from the table
8373 header, not the region length. For the Buffer case, use the table length
8374 also. Dennis Noordsij, Bob Moore. BZ 10734
8376 Fixed a problem where the same ACPI table could not be dynamically loaded
8378 unloaded more than once. Without this change, a table cannot be loaded
8380 once it has been loaded/unloaded one time. The current mechanism does not
8381 unregister a table upon an unload. During a load, if the same table is
8383 this no longer returns an exception. BZ 722
8385 Fixed a problem where the wrong descriptor length was calculated for the
8386 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
8388 are calculated as 12 bytes long, but the actual length in the internal
8389 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8391 by Linn Crosetto. BZ 728
8393 Fixed a possible memory leak in the Unload operator. The DdbHandle
8395 by Load() did not have its reference count decremented during unload,
8397 to a memory leak. Lin Ming. BZ 727
8399 Fixed a possible memory leak when deleting thermal/processor objects. Any
8400 associated notify handlers (and objects) were not being deleted. Fiodor
8403 Fixed the ordering of the ASCII names in the global mutex table to match
8405 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8407 Vegard Nossum. BZ 726
8409 Enhanced the AcpiGetObjectInfo interface to return the number of required
8410 arguments if the object is a control method. Added this call to the
8412 so the proper number of default arguments are passed to a method. This
8413 prevents a warning when executing methods from AcpiExec.
8415 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8416 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8418 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8420 Example Code and Data Size: These are the sizes for the OS-independent
8421 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8422 debug version of the code includes the debug output trace mechanism and
8424 much larger code and data size.
8427 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8428 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8430 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8431 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8433 2) iASL Compiler/Disassembler and Tools:
8435 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8436 resource descriptor names.
8438 iASL: Detect invalid ASCII characters in input (windows version). Removed
8440 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8441 characters in the input. BZ 441
8443 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8445 "result of operation not used" warning when the DDB handle returned from
8446 LoadTable is not used. The warning is not needed. BZ 590
8448 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8451 pass address of table to the AML. Added option to disable OpRegion
8453 to allow creation of an OpRegion with a real address that was passed to
8455 All of this allows testing of the Load and Unload operators from
8458 Debugger: update tables command for unloaded tables. Handle unloaded
8460 and use the standard table header output routine.
8462 ----------------------------------------
8463 09 June 2008. Summary of changes for version 20080609:
8465 1) ACPI CA Core Subsystem:
8467 Implemented a workaround for reversed _PRT entries. A significant number
8469 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8470 change dynamically detects and repairs this problem. Provides
8472 with MS ACPI. BZ 6859
8474 Simplified the internal ACPI hardware interfaces to eliminate the locking
8475 flag parameter from Register Read/Write. Added a new external interface,
8476 AcpiGetRegisterUnlocked.
8478 Fixed a problem where the invocation of a GPE control method could hang.
8480 was a regression introduced in 20080514. The new method argument count
8481 validation mechanism can enter an infinite loop when a GPE method is
8482 dispatched. Problem fixed by removing the obsolete code that passed GPE
8484 information to the notify handler via the control method parameter
8487 Fixed a problem where the _SST execution status was incorrectly returned
8489 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8491 20080514. _SST is optional and a NOT_FOUND exception should never be
8494 Fixed a problem where a deleted object could be accessed from within the
8496 parser. This was a regression introduced in version 20080123 as a fix for
8498 Unload operator. Lin Ming. BZ 10669
8500 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8502 and eliminated the use of a negative index in a loop. Operands are now
8503 displayed in the correct order, not backwards. This also fixes a
8505 introduced in 20080514 on 64-bit systems where the elimination of
8506 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8509 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8511 path did not delete a locally allocated structure.
8513 Updated definitions for the DMAR and SRAT tables to synchronize with the
8514 current specifications. Includes disassembler support.
8516 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8517 loop termination value was used. Loop terminated on iteration early,
8519 one mutex. Linn Crosetto
8521 Example Code and Data Size: These are the sizes for the OS-independent
8522 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8523 debug version of the code includes the debug output trace mechanism and
8525 much larger code and data size.
8528 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8529 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8531 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8532 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8534 2) iASL Compiler/Disassembler and Tools:
8536 Disassembler: Implemented support for EisaId() within _CID objects. Now
8537 disassemble integer _CID objects back to EisaId invocations, including
8538 multiple integers within _CID packages. Includes single-step support for
8541 Disassembler: Added support for DMAR and SRAT table definition changes.
8543 ----------------------------------------
8544 14 May 2008. Summary of changes for version 20080514:
8546 1) ACPI CA Core Subsystem:
8548 Fixed a problem where GPEs were enabled too early during the ACPICA
8549 initialization. This could lead to "handler not installed" errors on some
8550 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8552 ensures that all operation regions and devices throughout the namespace
8554 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8556 Implemented a change to the enter sleep code. Moved execution of the _GTS
8557 method to just before setting sleep enable bit. The execution was moved
8559 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8560 immediately before the SLP_EN bit is set, as per the ACPI specification.
8563 Implemented a fix to disable unknown GPEs (2nd version). Now always
8565 the GPE, even if ACPICA thinks that that it is already disabled. It is
8566 possible that the AML or some other code has enabled the GPE unbeknownst
8570 Fixed a problem with the Field operator where zero-length fields would
8572 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8574 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8576 Implemented a fix for the Load operator, now load the table at the
8578 root. This reverts a change introduced in version 20071019. The table is
8580 loaded at the namespace root even though this goes against the ACPI
8581 specification. This provides compatibility with other ACPI
8583 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8586 Fixed a problem where ACPICA would not Load() tables with unusual
8588 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8589 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8590 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8592 signatures, ACPICA must be compatible. BZ 10454.
8594 Fixed a possible negative array index in AcpiUtValidateException. Added
8596 fields to the exception string arrays to eliminate a -1 subtraction on
8600 Updated the debug tracking macros to reduce overall code and data size.
8601 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8602 instead of pointers to static strings. Jan Beulich and Bob Moore.
8604 Implemented argument count checking in control method invocation via
8605 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8607 many. This applies only to extern programmatic control method execution,
8609 method-to-method calls within the AML. Lin Ming.
8611 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8613 longer needed, especially with the removal of 16-bit support. It was
8615 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8618 32/64-bit platforms is required.
8620 Added the C const qualifier for appropriate string constants -- mostly
8621 MODULE_NAME and printf format strings. Jan Beulich.
8623 Example Code and Data Size: These are the sizes for the OS-independent
8624 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8625 debug version of the code includes the debug output trace mechanism and
8627 much larger code and data size.
8630 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8631 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8633 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8634 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8636 2) iASL Compiler/Disassembler and Tools:
8638 Implemented ACPI table revision ID validation in the disassembler. Zero
8640 always invalid. For DSDTs, the ID controls the interpreter integer width.
8642 means 32-bit and this is unusual. 2 or greater is 64-bit.
8644 ----------------------------------------
8645 21 March 2008. Summary of changes for version 20080321:
8647 1) ACPI CA Core Subsystem:
8649 Implemented an additional change to the GPE support in order to suppress
8650 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8652 disable incoming GPEs that are neither enabled nor disabled -- meaning
8654 the GPE is unknown to the system. This should prevent future interrupt
8656 from that GPE. BZ 6217 (Zhang Rui)
8658 Fixed a problem where NULL package elements were not returned to the
8659 AcpiEvaluateObject interface correctly. The element was simply ignored
8660 instead of returning a NULL ACPI_OBJECT package element, potentially
8662 a buffer overflow and/or confusing the caller who expected a fixed number
8664 elements. BZ 10132 (Lin Ming, Bob Moore)
8666 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8668 Qword), Field, BankField, and IndexField operators when invoked from
8670 an executing control method. In this case, these operators created
8672 nodes that were incorrectly left marked as permanent nodes instead of
8673 temporary nodes. This could cause a problem if there is race condition
8674 between an exiting control method and a running namespace walk. (Reported
8678 Fixed a problem where the CreateField and CreateXXXField operators would
8679 incorrectly allow duplicate names (the name of the field) with no
8683 Implemented several changes for Notify handling. Added support for new
8685 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8686 PowerResource objects is no longer allowed, as per the ACPI
8688 (Bob Moore, Zhang Rui)
8690 All Reference Objects returned via the AcpiEvaluateObject interface are
8692 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8694 NULL objects - either NULL package elements or unresolved named
8697 Fixed a problem where an extraneous debug message was produced for
8699 objects (when debugging enabled). The message "Package List length larger
8700 than NumElements count" is now produced in the correct case, and is now
8702 error message rather than a debug message. Added a debug message for the
8703 opposite case, where NumElements is larger than the Package List (the
8705 will be padded out with NULL elements as per the ACPI spec.)
8707 Implemented several improvements for the output of the ASL "Debug" object
8709 clarify and keep all data for a given object on one output line.
8711 Fixed two size calculation issues with the variable-length Start
8713 resource descriptor.
8715 Example Code and Data Size: These are the sizes for the OS-independent
8716 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8717 debug version of the code includes the debug output trace mechanism and
8719 a much larger code and data size.
8722 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8723 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8725 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8726 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8728 2) iASL Compiler/Disassembler and Tools:
8730 Fixed a problem with the use of the Switch operator where execution of
8732 containing method by multiple concurrent threads could cause an
8733 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8734 actual Switch opcode, it must be simulated with local named temporary
8735 variables and if/else pairs. The solution chosen was to mark any method
8737 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8740 ----------------------------------------
8741 13 February 2008. Summary of changes for version 20080213:
8743 1) ACPI CA Core Subsystem:
8745 Implemented another MS compatibility design change for GPE/Notify
8747 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8749 complete first. It is expected that the OSL will queue the enable request
8750 behind all pending notify requests (may require changes to the local host
8752 in AcpiOsExecute). Alexey Starikovskiy.
8754 Fixed a problem where buffer and package objects passed as arguments to a
8755 control method via the external AcpiEvaluateObject interface could cause
8757 AE_AML_INTERNAL exception depending on the order and type of operators
8758 executed by the target control method.
8760 Fixed a problem where resource descriptor size optimization could cause a
8761 problem when a _CRS resource template is passed to a _SRS method. The
8763 resource template must use the same descriptors (with the same size) as
8764 returned from _CRS. This change affects the following resource
8766 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8769 Fixed a problem where a CopyObject to RegionField, BankField, and
8771 objects did not perform an implicit conversion as it should. These types
8773 retain their initial type permanently as per the ACPI specification.
8775 a CopyObject to all other object types should not perform an implicit
8776 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8778 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8779 match device CIDs did not examine the entire list of available CIDs, but
8780 instead aborted on the first non-matching CID. Andrew Patterson.
8782 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8784 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8785 truncating the upper dword of a 64-bit value. This macro is only used to
8786 display debug output, so no incorrect calculations were made. Also,
8787 reimplemented the macro so that a 64-bit shift is not performed by
8788 inefficient compilers.
8790 Added missing va_end statements that should correspond with each va_start
8793 Example Code and Data Size: These are the sizes for the OS-independent
8794 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8795 debug version of the code includes the debug output trace mechanism and
8797 a much larger code and data size.
8800 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8801 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8803 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8804 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8806 2) iASL Compiler/Disassembler and Tools:
8808 Implemented full disassembler support for the following new ACPI tables:
8809 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8810 complicated HEST table. These tables support the Windows Hardware Error
8811 Architecture (WHEA).
8813 ----------------------------------------
8814 23 January 2008. Summary of changes for version 20080123:
8816 1) ACPI CA Core Subsystem:
8818 Added the 2008 copyright to all module headers and signons. This affects
8819 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8820 the tools/utilities.
8822 Fixed a problem with the SizeOf operator when used with Package and
8824 objects. These objects have deferred execution for some arguments, and
8826 execution is now completed before the SizeOf is executed. This problem
8828 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8832 Implemented an enhancement to the interpreter "slack mode". In the
8835 an explicit return or an implicitly returned object from the last
8837 opcode, a control method will now implicitly return an integer of value 0
8839 Microsoft compatibility. (Lin Ming) BZ 392
8841 Fixed a problem with the Load operator where an exception was not
8844 the case where the table is already loaded. (Lin Ming) BZ 463
8846 Implemented support for the use of DDBHandles as an Indexed Reference, as
8848 the ACPI spec. (Lin Ming) BZ 486
8850 Implemented support for UserTerm (Method invocation) for the Unload
8852 as per the ACPI spec. (Lin Ming) BZ 580
8854 Fixed a problem with the LoadTable operator where the OemId and
8856 input strings could cause unexpected failures if they were shorter than
8858 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8860 Implemented support for UserTerm (Method invocation) for the Unload
8862 as per the ACPI spec. (Lin Ming) BZ 580
8864 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8866 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8868 Example Code and Data Size: These are the sizes for the OS-independent
8869 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8870 debug version of the code includes the debug output trace mechanism and
8872 a much larger code and data size.
8875 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8876 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8878 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8879 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8881 2) iASL Compiler/Disassembler and Tools:
8883 Implemented support in the disassembler for checksum validation on
8885 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8887 header dump at the start of the disassembly.
8889 Implemented additional debugging information in the namespace listing
8891 created during compilation. In addition to the namespace hierarchy, the
8893 pathname to each namespace object is displayed.
8895 Fixed a problem with the disassembler where invalid ACPI tables could
8897 faults or infinite loops.
8899 Fixed an unexpected parse error when using the optional "parameter types"
8900 list in a control method declaration. (Lin Ming) BZ 397
8902 Fixed a problem where two External declarations with the same name did
8904 cause an error (Lin Ming) BZ 509
8906 Implemented support for full TermArgs (adding Argx, Localx and method
8907 invocation) for the ParameterData parameter to the LoadTable operator.
8911 ----------------------------------------
8912 19 December 2007. Summary of changes for version 20071219:
8914 1) ACPI CA Core Subsystem:
8916 Implemented full support for deferred execution for the TermArg string
8917 arguments for DataTableRegion. This enables forward references and full
8918 operand resolution for the three string arguments. Similar to
8920 deferred argument execution.) Lin Ming. BZ 430
8922 Implemented full argument resolution support for the BankValue argument
8924 BankField. Previously, only constants were supported, now any TermArg may
8926 used. Lin Ming BZ 387, 393
8928 Fixed a problem with AcpiGetDevices where the search of a branch of the
8929 device tree could be terminated prematurely. In accordance with the ACPI
8930 specification, the search down the current branch is terminated if a
8932 is both not present and not functional (instead of just not present.)
8936 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8938 the underlying AML code changed the GPE enable registers. Now, any
8940 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8942 instead of simply ignored. Rui Zhang.
8944 Fixed a problem with Index Fields where the Index register was
8946 limited to a maximum of 32 bits. Now any size may be used.
8948 Fixed a couple memory leaks associated with "implicit return" objects
8950 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8952 Example Code and Data Size: These are the sizes for the OS-independent
8953 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8954 debug version of the code includes the debug output trace mechanism and
8956 a much larger code and data size.
8959 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8960 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8962 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8963 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8965 ----------------------------------------
8966 14 November 2007. Summary of changes for version 20071114:
8968 1) ACPI CA Core Subsystem:
8970 Implemented event counters for each of the Fixed Events, the ACPI SCI
8971 (interrupt) itself, and control methods executed. Named
8972 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8974 should be useful for debugging and statistics.
8976 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8977 contents of the various event counters. Returns the current values for
8978 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8979 AcpiMethodCount. The interface can be expanded in the future if new
8981 are added. Device drivers should use this interface rather than access
8985 Fixed a problem with the FromBCD and ToBCD operators. With some
8987 the ShortDivide function worked incorrectly, causing problems with the
8989 functions with large input values. A truncation from 64-bit to 32-bit
8990 inadvertently occurred. Internal BZ 435. Lin Ming
8992 Fixed a problem with Index references passed as method arguments.
8994 passed as arguments to control methods were dereferenced immediately
8996 control was passed to the called method). The references are now
8998 passed directly to the called method. BZ 5389. Lin Ming
9000 Fixed a problem with CopyObject used in conjunction with the Index
9002 The reference was incorrectly dereferenced before the copy. The reference
9004 now correctly copied. BZ 5391. Lin Ming
9006 Fixed a problem with Control Method references within Package objects.
9008 references are now correctly generated. This completes the package
9009 construction overhaul that began in version 20071019.
9011 Example Code and Data Size: These are the sizes for the OS-independent
9012 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9013 debug version of the code includes the debug output trace mechanism and
9015 a much larger code and data size.
9018 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9019 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9021 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
9022 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
9025 2) iASL Compiler/Disassembler and Tools:
9027 The AcpiExec utility now installs handlers for all of the predefined
9028 Operation Region types. New types supported are: PCI_Config, CMOS, and
9031 Fixed a problem with the 64-bit version of AcpiExec where the extended
9033 bit) address fields for the DSDT and FACS within the FADT were not being
9034 used, causing truncation of the upper 32-bits of these addresses. Lin
9038 ----------------------------------------
9039 19 October 2007. Summary of changes for version 20071019:
9041 1) ACPI CA Core Subsystem:
9043 Fixed a problem with the Alias operator when the target of the alias is a
9044 named ASL operator that opens a new scope -- Scope, Device,
9046 Processor, and ThermalZone. In these cases, any children of the original
9047 operator could not be accessed via the alias, potentially causing
9049 AE_NOT_FOUND exceptions. (BZ 9067)
9051 Fixed a problem with the Package operator where all named references were
9052 created as object references and left otherwise unresolved. According to
9054 ACPI specification, a Package can only contain Data Objects or references
9056 control methods. The implication is that named references to Data Objects
9057 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
9058 immediately upon package creation. This is the approach taken with this
9059 change. References to all other named objects (Methods, Devices, Scopes,
9060 etc.) are all now properly created as reference objects. (BZ 5328)
9062 Reverted a change to Notify handling that was introduced in version
9063 20070508. This version changed the Notify handling from asynchronous to
9064 fully synchronous (Device driver Notify handling with respect to the
9066 ASL operator). It was found that this change caused more problems than it
9067 solved and was removed by most users.
9069 Fixed a problem with the Increment and Decrement operators where the type
9071 the target object could be unexpectedly and incorrectly changed. (BZ 353)
9074 Fixed a problem with the Load and LoadTable operators where the table
9075 location within the namespace was ignored. Instead, the table was always
9076 loaded into the root or current scope. Lin Ming.
9078 Fixed a problem with the Load operator when loading a table from a buffer
9079 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
9081 Fixed a problem with the Debug object where a store of a DdbHandle
9083 object to the Debug object could cause a fault.
9085 Added a table checksum verification for the Load operator, in the case
9087 the load is from a buffer. (BZ 578).
9089 Implemented additional parameter validation for the LoadTable operator.
9091 length of the input strings SignatureString, OemIdString, and OemTableId
9093 now checked for maximum lengths. (BZ 582) Lin Ming.
9095 Example Code and Data Size: These are the sizes for the OS-independent
9096 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9097 debug version of the code includes the debug output trace mechanism and
9099 a much larger code and data size.
9102 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9103 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9105 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9106 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9109 2) iASL Compiler/Disassembler:
9111 Fixed a problem where if a single file was specified and the file did not
9112 exist, no error message was emitted. (Introduced with wildcard support in
9115 ----------------------------------------
9116 19 September 2007. Summary of changes for version 20070919:
9118 1) ACPI CA Core Subsystem:
9120 Designed and implemented new external interfaces to install and remove
9121 handlers for ACPI table-related events. Current events that are defined
9123 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
9124 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
9125 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
9127 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
9128 (acpi_serialized option on Linux) could cause some systems to hang during
9129 initialization. (Bob Moore) BZ 8171
9131 Fixed a problem where objects of certain types (Device, ThermalZone,
9132 Processor, PowerResource) can be not found if they are declared and
9133 referenced from within the same control method (Lin Ming) BZ 341
9135 Example Code and Data Size: These are the sizes for the OS-independent
9136 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9137 debug version of the code includes the debug output trace mechanism and
9139 a much larger code and data size.
9142 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9143 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9145 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9146 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9149 2) iASL Compiler/Disassembler:
9151 Implemented support to allow multiple files to be compiled/disassembled
9154 single invocation. This includes command line wildcard support for both
9156 Windows and Unix versions of the compiler. This feature simplifies the
9157 disassembly and compilation of multiple ACPI tables in a single
9160 ----------------------------------------
9161 08 May 2007. Summary of changes for version 20070508:
9163 1) ACPI CA Core Subsystem:
9165 Implemented a Microsoft compatibility design change for the handling of
9167 Notify AML operator. Previously, notify handlers were dispatched and
9168 executed completely asynchronously in a deferred thread. The new design
9169 still executes the notify handlers in a different thread, but the
9171 thread that executed the Notify() now waits at a synchronization point
9173 the notify handler to complete. Some machines depend on a synchronous
9175 operator in order to operate correctly.
9177 Implemented support to allow Package objects to be passed as method
9178 arguments to the external AcpiEvaluateObject interface. Previously, this
9179 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
9180 implemented since there were no reserved control methods that required it
9183 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
9185 contained invalid non-zero values in reserved fields could cause later
9186 failures because these fields have meaning in later revisions of the
9188 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
9190 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
9192 Fixed a problem where the Global Lock handle was not properly updated if
9194 thread that acquired the Global Lock via executing AML code then
9196 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
9200 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
9201 could be corrupted if the interrupt being removed was at the head of the
9202 list. Reported by Linn Crosetto.
9204 Example Code and Data Size: These are the sizes for the OS-independent
9205 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9206 debug version of the code includes the debug output trace mechanism and
9208 a much larger code and data size.
9211 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9212 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9214 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9215 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9217 ----------------------------------------
9218 20 March 2007. Summary of changes for version 20070320:
9220 1) ACPI CA Core Subsystem:
9222 Implemented a change to the order of interpretation and evaluation of AML
9223 operand objects within the AML interpreter. The interpreter now evaluates
9224 operands in the order that they appear in the AML stream (and the
9225 corresponding ASL code), instead of in the reverse order (after the
9227 operand list has been parsed). The previous behavior caused several
9229 incompatibilities with the Microsoft AML interpreter as well as being
9230 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
9232 Implemented a change to the ACPI Global Lock support. All interfaces to
9234 global lock now allow the same thread to acquire the lock multiple times.
9235 This affects the AcpiAcquireGlobalLock external interface to the global
9237 as well as the internal use of the global lock to support AML fields -- a
9238 control method that is holding the global lock can now simultaneously
9240 AML fields that require global lock protection. Previously, in both
9242 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
9244 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
9245 Controller. There is no change to the behavior of the AML Acquire
9247 as this can already be used to acquire a mutex multiple times by the same
9248 thread. BZ 8066. With assistance from Alexey Starikovskiy.
9250 Fixed a problem where invalid objects could be referenced in the AML
9251 Interpreter after error conditions. During operand evaluation, ensure
9253 the internal "Return Object" field is cleared on error and only valid
9254 pointers are stored there. Caused occasional access to deleted objects
9256 resulted in "large reference count" warning messages. Valery Podrezov.
9258 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
9260 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
9263 Fixed an internal problem with the handling of result objects on the
9264 interpreter result stack. BZ 7872. Valery Podrezov.
9266 Removed obsolete code that handled the case where AML_NAME_OP is the
9268 of a reference (Reference.Opcode). This code was no longer necessary. BZ
9269 7874. Valery Podrezov.
9271 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
9274 remnant from the previously discontinued 16-bit support.
9276 Example Code and Data Size: These are the sizes for the OS-independent
9277 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9278 debug version of the code includes the debug output trace mechanism and
9280 a much larger code and data size.
9283 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9284 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9286 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9287 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9289 ----------------------------------------
9290 26 January 2007. Summary of changes for version 20070126:
9292 1) ACPI CA Core Subsystem:
9294 Added the 2007 copyright to all module headers and signons. This affects
9295 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9298 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
9299 during a table load. A bad pointer was passed in the case where the DSDT
9301 overridden, causing a fault in this case.
9303 Example Code and Data Size: These are the sizes for the OS-independent
9304 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9305 debug version of the code includes the debug output trace mechanism and
9307 a much larger code and data size.
9310 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9311 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9313 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9314 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9316 ----------------------------------------
9317 15 December 2006. Summary of changes for version 20061215:
9319 1) ACPI CA Core Subsystem:
9321 Support for 16-bit ACPICA has been completely removed since it is no
9323 necessary and it clutters the code. All 16-bit macros, types, and
9324 conditional compiles have been removed, cleaning up and simplifying the
9326 across the entire subsystem. DOS support is no longer needed since the
9327 bootable Linux firmware kit is now available.
9329 The handler for the Global Lock is now removed during AcpiTerminate to
9330 enable a clean subsystem restart, via the implementation of the
9331 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
9334 Implemented enhancements to the multithreading support within the
9336 to enable improved multithreading debugging and evaluation of the
9340 Debugger: Enhanced the Statistics/Memory command to emit the total
9342 memory used during the execution, as well as the maximum memory consumed
9344 each of the various object types. (Valery Podrezov)
9346 Example Code and Data Size: These are the sizes for the OS-independent
9347 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9348 debug version of the code includes the debug output trace mechanism and
9350 a much larger code and data size.
9353 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9354 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9356 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9357 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9360 2) iASL Compiler/Disassembler and Tools:
9362 AcpiExec: Implemented a new option (-m) to display full memory use
9363 statistics upon subsystem/program termination. (Valery Podrezov)
9365 ----------------------------------------
9366 09 November 2006. Summary of changes for version 20061109:
9368 1) ACPI CA Core Subsystem:
9370 Optimized the Load ASL operator in the case where the source operand is
9372 operation region. Simply map the operation region memory, instead of
9373 performing a bytewise read. (Region must be of type SystemMemory, see
9376 Fixed the Load ASL operator for the case where the source operand is a
9377 region field. A buffer object is also allowed as the source operand. BZ
9380 Fixed a problem where the Load ASL operator allowed the source operand to
9382 an operation region of any type. It is now restricted to regions of type
9383 SystemMemory, as per the ACPI specification. BZ 481
9385 Additional cleanup and optimizations for the new Table Manager code.
9387 AcpiEnable will now fail if all of the required ACPI tables are not
9389 (FADT, FACS, DSDT). BZ 477
9391 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9393 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9394 manually optimized to be aligned and will not work if it is byte-packed.
9396 Example Code and Data Size: These are the sizes for the OS-independent
9397 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9398 debug version of the code includes the debug output trace mechanism and
9400 a much larger code and data size.
9403 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9404 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9406 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9407 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9410 2) iASL Compiler/Disassembler and Tools:
9412 Fixed a problem where the presence of the _OSI predefined control method
9413 within complex expressions could cause an internal compiler error.
9415 AcpiExec: Implemented full region support for multiple address spaces.
9416 SpaceId is now part of the REGION object. BZ 429
9418 ----------------------------------------
9419 11 October 2006. Summary of changes for version 20061011:
9421 1) ACPI CA Core Subsystem:
9423 Completed an AML interpreter performance enhancement for control method
9424 execution. Previously a 2-pass parse/execution, control methods are now
9425 completely parsed and executed in a single pass. This improves overall
9426 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9427 use. (Valery Podrezov + interpreter changes in version 20051202 that
9428 eliminated namespace loading during the pass one parse.)
9430 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9432 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9434 obtained and also checked for an ID match.
9436 Implemented additional support for the PCI _ADR execution: upsearch until
9438 device scope is found before executing _ADR. This allows PCI_Config
9439 operation regions to be declared locally within control methods
9443 Fixed a problem with a possible race condition between threads executing
9444 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9445 modifying AcpiWalkNamespace to (by default) ignore all temporary
9447 entries created during any concurrent control method execution. An
9448 additional namespace race condition is known to exist between
9449 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9452 Restructured the AML ParseLoop function, breaking it into several
9453 subfunctions in order to reduce CPU stack use and improve
9457 AcpiGetHandle: Fix for parameter validation to detect invalid
9459 of prefix handle and pathname. BZ 478
9461 Example Code and Data Size: These are the sizes for the OS-independent
9462 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9463 debug version of the code includes the debug output trace mechanism and
9465 a much larger code and data size.
9468 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9469 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9471 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9472 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9474 2) iASL Compiler/Disassembler and Tools:
9476 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9478 to restore original behavior.
9480 ----------------------------------------
9481 27 September 2006. Summary of changes for version 20060927:
9483 1) ACPI CA Core Subsystem:
9485 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9486 These functions now use a spinlock for mutual exclusion and the interrupt
9487 level indication flag is not needed.
9489 Fixed a problem with the Global Lock where the lock could appear to be
9490 obtained before it is actually obtained. The global lock semaphore was
9491 inadvertently created with one unit instead of zero units. (BZ 464)
9495 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9497 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9499 Example Code and Data Size: These are the sizes for the OS-independent
9500 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9501 debug version of the code includes the debug output trace mechanism and
9503 a much larger code and data size.
9506 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9507 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9509 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9510 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9513 2) iASL Compiler/Disassembler and Tools:
9515 Fixed a compilation problem with the pre-defined Resource Descriptor
9517 names where an "object does not exist" error could be incorrectly
9519 if the parent ResourceTemplate pathname places the template within a
9520 different namespace scope than the current scope. (BZ 7212)
9522 Fixed a problem where the compiler could hang after syntax errors
9524 in an ElseIf construct. (BZ 453)
9526 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9527 operator. An incorrect output filename was produced when this parameter
9529 a null string (""). Now, the original input filename is used as the AML
9530 output filename, with an ".aml" extension.
9532 Implemented a generic batch command mode for the AcpiExec utility
9534 any AML debugger command) (Valery Podrezov).
9536 ----------------------------------------
9537 12 September 2006. Summary of changes for version 20060912:
9539 1) ACPI CA Core Subsystem:
9541 Enhanced the implementation of the "serialized mode" of the interpreter
9542 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9543 specified, instead of creating a serialization semaphore per control
9545 the interpreter lock is simply no longer released before a blocking
9546 operation during control method execution. This effectively makes the AML
9547 Interpreter single-threaded. The overhead of a semaphore per-method is
9550 Fixed a regression where an error was no longer emitted if a control
9552 attempts to create 2 objects of the same name. This once again returns
9553 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9555 will dynamically serialize the control method to possible prevent future
9558 Integrated a fix for a problem with PCI Express HID detection in the PCI
9559 Config Space setup procedure. (BZ 7145)
9561 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9562 AcpiHwInitialize function - the FADT registers are now validated when the
9565 Added two new warnings during FADT verification - 1) if the FADT is
9567 than the largest known FADT version, and 2) if there is a mismatch
9570 32-bit block address and the 64-bit X counterpart (when both are non-
9573 Example Code and Data Size: These are the sizes for the OS-independent
9574 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9575 debug version of the code includes the debug output trace mechanism and
9577 a much larger code and data size.
9580 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9581 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9583 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9584 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9587 2) iASL Compiler/Disassembler and Tools:
9589 Fixed a problem with the implementation of the Switch() operator where
9591 temporary variable was declared too close to the actual Switch, instead
9593 at method level. This could cause a problem if the Switch() operator is
9594 within a while loop, causing an error on the second iteration. (BZ 460)
9596 Disassembler - fix for error emitted for unknown type for target of scope
9597 operator. Now, ignore it and continue.
9599 Disassembly of an FADT now verifies the input FADT and reports any errors
9600 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9602 Disassembly of raw data buffers with byte initialization data now
9604 each output line with the current buffer offset.
9606 Disassembly of ASF! table now includes all variable-length data fields at
9607 the end of some of the subtables.
9609 The disassembler now emits a comment if a buffer appears to be a
9610 ResourceTemplate, but cannot be disassembled as such because the EndTag
9612 not appear at the very end of the buffer.
9614 AcpiExec - Added the "-t" command line option to enable the serialized
9616 of the AML interpreter.
9618 ----------------------------------------
9619 31 August 2006. Summary of changes for version 20060831:
9621 1) ACPI CA Core Subsystem:
9623 Miscellaneous fixes for the Table Manager:
9624 - Correctly initialize internal common FADT for all 64-bit "X" fields
9625 - Fixed a couple table mapping issues during table load
9626 - Fixed a couple alignment issues for IA64
9627 - Initialize input array to zero in AcpiInitializeTables
9628 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9631 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9633 immediately disabled to prevent the waking GPE from firing again and to
9634 prevent other wake GPEs from interrupting the wake process.
9636 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9638 be used for debugging systems with a large number of ACPI interrupts.
9640 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9641 both the ACPICA headers and the disassembler.
9643 Example Code and Data Size: These are the sizes for the OS-independent
9644 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9645 debug version of the code includes the debug output trace mechanism and
9647 a much larger code and data size.
9650 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9651 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9653 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9654 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9657 2) iASL Compiler/Disassembler and Tools:
9659 Disassembler support for the DMAR ACPI table.
9661 ----------------------------------------
9662 23 August 2006. Summary of changes for version 20060823:
9664 1) ACPI CA Core Subsystem:
9666 The Table Manager component has been completely redesigned and
9667 reimplemented. The new design is much simpler, and reduces the overall
9669 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9671 now possible to obtain the ACPI tables very early during kernel
9672 initialization, even before dynamic memory management is initialized.
9673 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9675 Obsolete ACPICA interfaces:
9677 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9680 - AcpiLoadTable: Not needed.
9681 - AcpiUnloadTable: Not needed.
9683 New ACPICA interfaces:
9685 - AcpiInitializeTables: Must be called before the table manager can be
9687 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9688 allocated memory after it becomes available.
9689 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9693 Other ACPICA changes:
9695 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9697 AcpiOsUnmapMemory to free this mapping.
9698 - AcpiGetTable returns the actual mapped table. The mapping is managed
9699 internally and must not be deleted by the caller. Use of this interface
9700 causes no additional dynamic memory allocation.
9701 - AcpiFindRootPointer: Support for physical addressing has been
9703 it appeared to be unused.
9704 - The interface to AcpiOsMapMemory has changed to be consistent with the
9705 other allocation interfaces.
9706 - The interface to AcpiOsGetRootPointer has changed to eliminate
9709 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9711 bit platforms. Was previously 64 bits on all platforms.
9712 - The interface to the ACPI Global Lock acquire/release macros have
9714 slightly since ACPICA no longer keeps a local copy of the FACS with a
9715 constructed pointer to the actual global lock.
9717 Porting to the new table manager:
9719 - AcpiInitializeTables: Must be called once, and can be called anytime
9720 during the OS initialization process. It allows the host to specify an
9722 of memory to be used to store the internal version of the RSDT/XSDT (root
9723 table). This allows the host to access ACPI tables before memory
9725 is initialized and running.
9726 - AcpiReallocateRootTable: Can be called after memory management is
9728 to copy the root table to a dynamically allocated array, freeing up the
9729 scratch memory specified in the call to AcpiInitializeTables.
9730 - AcpiSubsystemInitialize: This existing interface is independent of the
9731 Table Manager, and does not have to be called before the Table Manager
9733 be used, it only must be called before the rest of ACPICA can be used.
9734 - ACPI Tables: Some changes have been made to the names and structure of
9736 actbl.h and actbl1.h header files and may require changes to existing
9738 For example, bitfields have been completely removed because of their lack
9740 portability across C compilers.
9741 - Update interfaces to the Global Lock acquire/release macros if local
9742 versions are used. (see acwin.h)
9744 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9748 Example Code and Data Size: These are the sizes for the OS-independent
9749 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9750 debug version of the code includes the debug output trace mechanism and
9752 a much larger code and data size.
9755 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9756 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9758 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9759 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9762 2) iASL Compiler/Disassembler and Tools:
9764 No changes for this release.
9766 ----------------------------------------
9767 21 July 2006. Summary of changes for version 20060721:
9769 1) ACPI CA Core Subsystem:
9771 The full source code for the ASL test suite used to validate the iASL
9772 compiler and the ACPICA core subsystem is being released with the ACPICA
9773 source for the first time. The source is contained in a separate package
9775 consists of over 1100 files that exercise all ASL/AML operators. The
9777 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9781 Completed a new design and implementation for support of the ACPI Global
9782 Lock. On the OS side, the global lock is now treated as a standard AML
9783 mutex. Previously, multiple OS threads could "acquire" the global lock
9784 simultaneously. However, this could cause the BIOS to be starved out of
9786 lock - especially in cases such as the Embedded Controller driver where
9787 there is a tight coupling between the OS and the BIOS.
9789 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9790 The Global Lock interrupt handler no longer queues the execution of a
9791 separate thread to signal the global lock semaphore. Instead, the
9793 is signaled directly from the interrupt handler.
9795 Implemented support within the AML interpreter for package objects that
9796 contain a larger AML length (package list length) than the package
9798 count. In this case, the length of the package is truncated to match the
9799 package element count. Some BIOS code apparently modifies the package
9801 on the fly, and this change supports this behavior. Provides
9803 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9805 Implemented a temporary fix for the BankValue parameter of a Bank Field
9807 support all constant values, now including the Zero and One opcodes.
9808 Evaluation of this parameter must eventually be converted to a full
9810 evaluation. A not-implemented error is now returned (temporarily) for
9812 constant values for this parameter.
9814 Fixed problem reports (Fiodor Suietov) integrated:
9815 - Fix for premature object deletion after CopyObject on Operation Region
9819 Example Code and Data Size: These are the sizes for the OS-independent
9820 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9821 debug version of the code includes the debug output trace mechanism and
9823 a much larger code and data size.
9826 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9827 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9829 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9830 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9833 2) iASL Compiler/Disassembler and Tools:
9835 No changes for this release.
9837 ----------------------------------------
9838 07 July 2006. Summary of changes for version 20060707:
9840 1) ACPI CA Core Subsystem:
9842 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9843 that do not allow the initialization of address pointers within packed
9844 structures - even though the hardware itself may support misaligned
9845 transfers. Some of the debug data structures are packed by default to
9848 Added an error message for the case where AcpiOsGetThreadId() returns
9850 A non-zero value is required by the core ACPICA code to ensure the proper
9851 operation of AML mutexes and recursive control methods.
9853 The DSDT is now the only ACPI table that determines whether the AML
9854 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9856 the hooks for per-table 32/64 switching have been removed from the code.
9858 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9860 Fixed a possible leak of an OwnerID in the error path of
9861 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9862 deletion to a single place in AcpiTbUninstallTable to correct possible
9864 when using the AcpiTbDeleteTablesByType interface (with assistance from
9867 Fixed a problem with Serialized control methods where the semaphore
9868 associated with the method could be over-signaled after multiple method
9871 Fixed two issues with the locking of the internal namespace data
9873 Both the Unload() operator and AcpiUnloadTable interface now lock the
9874 namespace during the namespace deletion associated with the table unload
9875 (with assistance from Linn Crosetto.)
9877 Fixed problem reports (Valery Podrezov) integrated:
9878 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9880 Fixed problem reports (Fiodor Suietov) integrated:
9881 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9882 - On Address Space handler deletion, needless deactivation call (BZ 374)
9883 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9885 - Possible memory leak, Notify sub-objects of Processor, Power,
9888 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9889 - Minimum Length of RSDT should be validated (BZ 379)
9890 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9892 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9896 Example Code and Data Size: These are the sizes for the OS-independent
9897 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9898 debug version of the code includes the debug output trace mechanism and
9900 a much larger code and data size.
9903 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9904 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9906 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9907 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9910 2) iASL Compiler/Disassembler and Tools:
9912 Fixed problem reports:
9913 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9916 ----------------------------------------
9917 23 June 2006. Summary of changes for version 20060623:
9919 1) ACPI CA Core Subsystem:
9921 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9922 allows the type to be customized to the host OS for improved efficiency
9923 (since a spinlock is usually a very small object.)
9925 Implemented support for "ignored" bits in the ACPI registers. According
9927 the ACPI specification, these bits should be preserved when writing the
9928 registers via a read/modify/write cycle. There are 3 bits preserved in
9930 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9932 Implemented the initial deployment of new OSL mutex interfaces. Since
9934 host operating systems have separate mutex and semaphore objects, this
9935 feature was requested. The base code now uses mutexes (and the new mutex
9936 interfaces) wherever a binary semaphore was used previously. However, for
9937 the current release, the mutex interfaces are defined as macros to map
9939 to the existing semaphore interfaces. Therefore, no OSL changes are
9941 at this time. (See acpiosxf.h)
9943 Fixed several problems with the support for the control method SyncLevel
9944 parameter. The SyncLevel now works according to the ACPI specification
9946 in concert with the Mutex SyncLevel parameter, since the current
9948 is a property of the executing thread. Mutual exclusion for control
9950 is now implemented with a mutex instead of a semaphore.
9952 Fixed three instances of the use of the C shift operator in the bitfield
9953 support code (exfldio.c) to avoid the use of a shift value larger than
9955 target data width. The behavior of C compilers is undefined in this case
9957 can cause unpredictable results, and therefore the case must be detected
9959 avoided. (Fiodor Suietov)
9961 Added an info message whenever an SSDT or OEM table is loaded dynamically
9962 via the Load() or LoadTable() ASL operators. This should improve
9964 capability since it will show exactly what tables have been loaded
9966 the tables present in the RSDT/XSDT.)
9968 Example Code and Data Size: These are the sizes for the OS-independent
9969 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9970 debug version of the code includes the debug output trace mechanism and
9972 a much larger code and data size.
9975 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9976 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9978 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9979 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9982 2) iASL Compiler/Disassembler and Tools:
9984 No changes for this release.
9986 ----------------------------------------
9987 08 June 2006. Summary of changes for version 20060608:
9989 1) ACPI CA Core Subsystem:
9991 Converted the locking mutex used for the ACPI hardware to a spinlock.
9993 change should eliminate all problems caused by attempting to acquire a
9994 semaphore at interrupt level, and it means that all ACPICA external
9995 interfaces that directly access the ACPI hardware can be safely called
9997 interrupt level. OSL code that implements the semaphore interfaces should
9999 able to eliminate any workarounds for being called at interrupt level.
10001 Fixed a regression introduced in 20060526 where the ACPI device
10002 initialization could be prematurely aborted with an AE_NOT_FOUND if a
10004 did not have an optional _INI method.
10006 Fixed an IndexField issue where a write to the Data Register should be
10007 limited in size to the AccessSize (width) of the IndexField itself. (BZ
10011 Fixed problem reports (Valery Podrezov) integrated:
10012 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
10014 Fixed problem reports (Fiodor Suietov) integrated:
10015 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
10017 Removed four global mutexes that were obsolete and were no longer being
10020 Example Code and Data Size: These are the sizes for the OS-independent
10021 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10022 debug version of the code includes the debug output trace mechanism and
10024 a much larger code and data size.
10027 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10028 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10030 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
10031 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
10034 2) iASL Compiler/Disassembler and Tools:
10036 Fixed a fault when using -g option (get tables from registry) on Windows
10039 Fixed problem reports integrated:
10040 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
10041 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
10043 - Global table revision override (-r) is ignored (BZ 413)
10045 ----------------------------------------
10046 26 May 2006. Summary of changes for version 20060526:
10048 1) ACPI CA Core Subsystem:
10050 Restructured, flattened, and simplified the internal interfaces for
10051 namespace object evaluation - resulting in smaller code, less CPU stack
10053 and fewer interfaces. (With assistance from Mikhail Kouzmich)
10055 Fixed a problem with the CopyObject operator where the first parameter
10057 not typed correctly for the parser, interpreter, compiler, and
10059 Caused various errors and unexpected behavior.
10061 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
10062 produced incorrect results with some C compilers. Since the behavior of C
10063 compilers when the shift value is larger than the datatype width is
10064 apparently not well defined, the interpreter now detects this condition
10066 simply returns zero as expected in all such cases. (BZ 395)
10068 Fixed problem reports (Valery Podrezov) integrated:
10069 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
10070 - Allow interpreter to handle nested method declarations (BZ 5361)
10072 Fixed problem reports (Fiodor Suietov) integrated:
10073 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
10075 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
10077 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
10078 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
10079 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
10080 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
10081 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
10082 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
10083 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
10085 - Status of the Global Initialization Handler call not used (BZ 366)
10086 - Incorrect object parameter to Global Initialization Handler (BZ 367)
10088 Example Code and Data Size: These are the sizes for the OS-independent
10089 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10090 debug version of the code includes the debug output trace mechanism and
10092 a much larger code and data size.
10095 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10096 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10098 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10099 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10102 2) iASL Compiler/Disassembler and Tools:
10104 Modified the parser to allow the names IO, DMA, and IRQ to be used as
10105 namespace identifiers with no collision with existing resource descriptor
10106 macro names. This provides compatibility with other ASL compilers and is
10107 most useful for disassembly/recompilation of existing tables without
10109 errors. (With assistance from Thomas Renninger)
10111 Disassembler: fixed an incorrect disassembly problem with the
10112 DataTableRegion and CopyObject operators. Fixed a possible fault during
10113 disassembly of some Alias operators.
10115 ----------------------------------------
10116 12 May 2006. Summary of changes for version 20060512:
10118 1) ACPI CA Core Subsystem:
10120 Replaced the AcpiOsQueueForExecution interface with a new interface named
10121 AcpiOsExecute. The major difference is that the new interface does not
10123 a Priority parameter, this appeared to be useless and has been replaced
10126 Type parameter. The Type tells the host what type of execution is being
10127 requested, such as global lock handler, notify handler, GPE handler, etc.
10128 This allows the host to queue and execute the request as appropriate for
10130 request type, possibly using different work queues and different
10132 for the various request types. This enables fixes for multithreading
10133 deadlock problems such as BZ #5534, and will require changes to all
10135 OS interface layers. (Alexey Starikovskiy and Bob Moore)
10137 Fixed a possible memory leak associated with the support for the so-
10139 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
10142 Fixed a problem with the Load() operator where a table load from an
10143 operation region could overwrite an internal table buffer by up to 7
10145 and cause alignment faults on IPF systems. (With assistance from Luming
10148 Example Code and Data Size: These are the sizes for the OS-independent
10149 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10150 debug version of the code includes the debug output trace mechanism and
10152 a much larger code and data size.
10155 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10156 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10158 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10159 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10163 2) iASL Compiler/Disassembler and Tools:
10165 Disassembler: Implemented support to cross reference the internal
10167 and automatically generate ASL External() statements for symbols not
10169 within the current table being disassembled. This will simplify the
10170 disassembly and recompilation of interdependent tables such as SSDTs
10172 these statements will no longer have to be added manually.
10174 Disassembler: Implemented experimental support to automatically detect
10175 invocations of external control methods and generate appropriate
10177 statements. This is problematic because the AML cannot be correctly
10179 until the number of arguments for each control method is known.
10181 standalone method invocations and invocations as the source operand of a
10182 Store() statement are supported.
10184 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
10185 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
10186 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
10187 more readable and likely closer to the original ASL source.
10189 ----------------------------------------
10190 21 April 2006. Summary of changes for version 20060421:
10192 1) ACPI CA Core Subsystem:
10194 Removed a device initialization optimization introduced in 20051216 where
10195 the _STA method was not run unless an _INI was also present for the same
10196 device. This optimization could cause problems because it could allow
10198 methods to be run within a not-present device subtree. (If a not-present
10199 device had no _INI, _STA would not be run, the not-present status would
10201 be discovered, and the children of the device would be incorrectly
10204 Implemented a new _STA optimization where namespace subtrees that do not
10205 contain _INI are identified and ignored during device initialization.
10206 Selectively running _STA can significantly improve boot time on large
10207 machines (with assistance from Len Brown.)
10209 Implemented support for the device initialization case where the returned
10210 _STA flags indicate a device not-present but functioning. In this case,
10212 is not run, but the device children are examined for presence, as per the
10213 ACPI specification.
10215 Implemented an additional change to the IndexField support in order to
10216 conform to MS behavior. The value written to the Index Register is not
10217 simply a byte offset, it is a byte offset in units of the access width of
10218 the parent Index Field. (Fiodor Suietov)
10220 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
10221 interface is called during the creation of all AML operation regions, and
10222 allows the host OS to exert control over what addresses it will allow the
10223 AML code to access. Operation Regions whose addresses are disallowed will
10224 cause a runtime exception when they are actually accessed (will not
10226 or abort table loading.) See oswinxf or osunixxf for an example
10229 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
10230 interface allows the host OS to match the various "optional"
10231 interface/behavior strings for the _OSI predefined control method as
10232 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
10233 for an example implementation.
10235 Restructured and corrected various problems in the exception handling
10237 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
10238 (with assistance from Takayoshi Kochi.)
10240 Modified the Linux source converter to ignore quoted string literals
10242 converting identifiers from mixed to lower case. This will correct
10244 with the disassembler and other areas where such strings must not be
10247 The ACPI_FUNCTION_* macros no longer require quotes around the function
10248 name. This allows the Linux source converter to convert the names, now
10250 the converter ignores quoted strings.
10252 Example Code and Data Size: These are the sizes for the OS-independent
10253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10254 debug version of the code includes the debug output trace mechanism and
10256 a much larger code and data size.
10260 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10261 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10263 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10264 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10267 2) iASL Compiler/Disassembler and Tools:
10269 Implemented 3 new warnings for iASL, and implemented multiple warning
10273 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
10275 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
10276 check for the possible timeout, a warning is issued.
10278 2) Useless operators: If an ASL operator does not specify an optional
10280 operand and it also does not use the function return value from the
10281 operator, a warning is issued since the operator effectively does
10284 3) Unreferenced objects: If a namespace object is created, but never
10285 referenced, a warning is issued. This is a warning level 2 since there
10287 cases where this is ok, such as when a secondary table is loaded that
10289 the unreferenced objects. Even so, care is taken to only flag objects
10291 don't look like they will ever be used. For example, the reserved methods
10292 (starting with an underscore) are usually not referenced because it is
10293 expected that the OS will invoke them.
10295 ----------------------------------------
10296 31 March 2006. Summary of changes for version 20060331:
10298 1) ACPI CA Core Subsystem:
10300 Implemented header file support for the following additional ACPI tables:
10301 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
10303 all current and known ACPI tables are now defined in the ACPICA headers
10305 are available for use by device drivers and other software.
10307 Implemented support to allow tables that contain ACPI names with invalid
10308 characters to be loaded. Previously, this would cause the table load to
10309 fail, but since there are several known cases of such tables on existing
10310 machines, this change was made to enable ACPI support for them. Also,
10312 matches the behavior of the Microsoft ACPI implementation.
10314 Fixed a couple regressions introduced during the memory optimization in
10316 20060317 release. The namespace node definition required additional
10317 reorganization and an internal datatype that had been changed to 8-bit
10319 restored to 32-bit. (Valery Podrezov)
10321 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
10322 could be passed through to AcpiOsReleaseObject which is unexpected. Such
10323 null pointers are now trapped and ignored, matching the behavior of the
10324 previous implementation before the deployment of AcpiOsReleaseObject.
10325 (Valery Podrezov, Fiodor Suietov)
10327 Fixed a memory mapping leak during the deletion of a SystemMemory
10329 region where a cached memory mapping was not deleted. This became a
10330 noticeable problem for operation regions that are defined within
10332 used control methods. (Dana Meyers)
10334 Reorganized the ACPI table header files into two main files: one for the
10335 ACPI tables consumed by the ACPICA core, and another for the
10337 ACPI tables that are consumed by the drivers and other software. The
10339 FADT definitions were merged into one common section and three different
10340 tables (ACPI 1.0, 1.0+, and 2.0)
10342 Example Code and Data Size: These are the sizes for the OS-independent
10343 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10344 debug version of the code includes the debug output trace mechanism and
10346 a much larger code and data size.
10349 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10350 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10352 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10353 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10356 2) iASL Compiler/Disassembler and Tools:
10358 Disassembler: Implemented support to decode and format all non-AML ACPI
10359 tables (tables other than DSDTs and SSDTs.) This includes the new tables
10360 added to the ACPICA headers, therefore all current and known ACPI tables
10364 Disassembler: The change to allow ACPI names with invalid characters also
10365 enables the disassembly of such tables. Invalid characters within names
10367 changed to '*' to make the name printable; the iASL compiler will still
10368 generate an error for such names, however, since this is an invalid ACPI
10371 Implemented an option for AcpiXtract (-a) to extract all tables found in
10373 input file. The default invocation extracts only the DSDTs and SSDTs.
10375 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
10376 makefile for the AcpiXtract utility.
10378 ----------------------------------------
10379 17 March 2006. Summary of changes for version 20060317:
10381 1) ACPI CA Core Subsystem:
10383 Implemented the use of a cache object for all internal namespace nodes.
10384 Since there are about 1000 static nodes in a typical system, this will
10385 decrease memory use for cache implementations that minimize per-
10387 overhead (such as a slab allocator.)
10389 Removed the reference count mechanism for internal namespace nodes, since
10391 was deemed unnecessary. This reduces the size of each namespace node by
10392 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10394 and 32 bytes for the 64-bit case.
10396 Optimized several internal data structures to reduce object size on 64-
10398 platforms by packing data within the 64-bit alignment. This includes the
10399 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10400 instances corresponding to the namespace objects.
10402 Added two new strings for the predefined _OSI method: "Windows 2001.1
10404 and "Windows 2006".
10406 Split the allocation tracking mechanism out to a separate file, from
10407 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10408 application-level code. Kernels may wish to not include uttrack.c in
10411 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10413 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10416 Code and Data Size: These are the sizes for the acpica.lib produced by
10418 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10420 driver or OSPM code. The debug version of the code includes the debug
10422 trace mechanism and has a much larger code and data size. Note that these
10423 values will vary depending on the efficiency of the compiler and the
10424 compiler options used during generation.
10427 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10428 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10430 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10431 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10434 2) iASL Compiler/Disassembler and Tools:
10436 Implemented an ANSI C version of the acpixtract utility. This version
10438 automatically extract the DSDT and all SSDTs from the input acpidump text
10439 file and dump the binary output to separate files. It can also display a
10440 summary of the input file including the headers for each table found and
10441 will extract any single ACPI table, with any signature. (See
10442 source/tools/acpixtract)
10444 ----------------------------------------
10445 10 March 2006. Summary of changes for version 20060310:
10447 1) ACPI CA Core Subsystem:
10449 Tagged all external interfaces to the subsystem with the new
10450 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10452 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10453 macro. The default definition is NULL.
10455 Added the ACPI_THREAD_ID type for the return value from
10457 This allows the host to define this as necessary to simplify kernel
10458 integration. The default definition is ACPI_NATIVE_UINT.
10460 Fixed two interpreter problems related to error processing, the deletion
10462 objects, and placing invalid pointers onto the internal operator result
10463 stack. BZ 6028, 6151 (Valery Podrezov)
10465 Increased the reference count threshold where a warning is emitted for
10467 reference counts in order to eliminate unnecessary warnings on systems
10469 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10472 Due to universal disagreement as to the meaning of the 'c' in the
10474 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10475 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10476 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10479 Code and Data Size: These are the sizes for the acpica.lib produced by
10481 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10483 driver or OSPM code. The debug version of the code includes the debug
10485 trace mechanism and has a much larger code and data size. Note that these
10486 values will vary depending on the efficiency of the compiler and the
10487 compiler options used during generation.
10490 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10491 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10493 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10494 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10497 2) iASL Compiler/Disassembler:
10499 Disassembler: implemented support for symbolic resource descriptor
10500 references. If a CreateXxxxField operator references a fixed offset
10503 resource descriptor, a name is assigned to the descriptor and the offset
10505 translated to the appropriate resource tag and pathname. The addition of
10506 this support brings the disassembled code very close to the original ASL
10507 source code and helps eliminate run-time errors when the disassembled
10509 is modified (and recompiled) in such a way as to invalidate the original
10512 Implemented support for a Descriptor Name as the last parameter to the
10514 Register() macro. This parameter was inadvertently left out of the ACPI
10515 specification, and will be added for ACPI 3.0b.
10517 Fixed a problem where the use of the "_OSI" string (versus the full path
10518 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10520 Fixed a problem with the error message that occurs when an invalid string
10522 used for a _HID object (such as one with an embedded asterisk:
10524 The correct message is now displayed.
10526 ----------------------------------------
10527 17 February 2006. Summary of changes for version 20060217:
10529 1) ACPI CA Core Subsystem:
10531 Implemented a change to the IndexField support to match the behavior of
10533 Microsoft AML interpreter. The value written to the Index register is now
10535 byte offset, no longer an index based upon the width of the Data
10537 This should fix IndexField problems seen on some machines where the Data
10538 register is not exactly one byte wide. The ACPI specification will be
10539 clarified on this point.
10541 Fixed a problem where several resource descriptor types could overrun the
10542 internal descriptor buffer due to size miscalculation: VendorShort,
10543 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10544 affect all platforms.
10546 Fixed a problem where individual resource descriptors were misaligned
10548 the internal buffer, causing alignment faults on IA64 platforms.
10550 Code and Data Size: These are the sizes for the acpica.lib produced by
10552 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10554 driver or OSPM code. The debug version of the code includes the debug
10556 trace mechanism and has a much larger code and data size. Note that these
10557 values will vary depending on the efficiency of the compiler and the
10558 compiler options used during generation.
10561 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10562 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10564 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10565 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10568 2) iASL Compiler/Disassembler:
10570 Implemented support for new reserved names: _WDG and _WED are Microsoft
10571 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10572 defined method (Throttling Depth Limit.)
10574 Fixed a problem where a zero-length VendorShort or VendorLong resource
10575 descriptor was incorrectly emitted as a descriptor of length one.
10577 ----------------------------------------
10578 10 February 2006. Summary of changes for version 20060210:
10580 1) ACPI CA Core Subsystem:
10582 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10583 normal execution. These became apparent after the conversion from
10586 Fixed a problem where the CreateField operator could hang if the BitIndex
10588 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10590 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10591 failed with an exception. This also fixes a couple of related RefOf and
10592 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10594 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10596 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10600 Implemented a memory cleanup at the end of the execution of each
10602 of an AML While() loop, preventing the accumulation of outstanding
10604 (Valery Podrezov, BZ 5427)
10606 Eliminated a chunk of duplicate code in the object resolution code.
10610 Fixed several warnings during the 64-bit code generation.
10612 The AcpiSrc source code conversion tool now inserts one line of
10614 after an if() statement that is followed immediately by a comment,
10616 readability of the Linux code.
10618 Code and Data Size: The current and previous library sizes for the core
10619 subsystem are shown below. These are the code and data sizes for the
10620 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10622 values do not include any ACPI driver or OSPM code. The debug version of
10624 code includes the debug output trace mechanism and has a much larger code
10625 and data size. Note that these values will vary depending on the
10627 of the compiler and the compiler options used during generation.
10630 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10631 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10633 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10634 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10637 2) iASL Compiler/Disassembler:
10639 Fixed a problem with the disassembly of a BankField operator with a
10641 expression for the BankValue parameter.
10643 ----------------------------------------
10644 27 January 2006. Summary of changes for version 20060127:
10646 1) ACPI CA Core Subsystem:
10648 Implemented support in the Resource Manager to allow unresolved
10650 references within resource package objects for the _PRT method. This
10652 is in addition to the previously implemented unresolved reference support
10653 within the AML parser. If the interpreter slack mode is enabled, these
10654 unresolved references will be passed through to the caller as a NULL
10658 Implemented and deployed new macros and functions for error and warning
10659 messages across the subsystem. These macros are simpler and generate less
10660 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10661 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10662 macros remain defined to allow ACPI drivers time to migrate to the new
10665 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10667 Acquire/Release Lock OSL interfaces.
10669 Fixed a problem where Alias ASL operators are sometimes not correctly
10670 resolved, in both the interpreter and the iASL compiler.
10672 Fixed several problems with the implementation of the
10673 ConcatenateResTemplate
10674 ASL operator. As per the ACPI specification, zero length buffers are now
10675 treated as a single EndTag. One-length buffers always cause a fatal
10676 exception. Non-zero length buffers that do not end with a full 2-byte
10678 cause a fatal exception.
10680 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10681 interface. (With assistance from Thomas Renninger)
10683 Code and Data Size: The current and previous library sizes for the core
10684 subsystem are shown below. These are the code and data sizes for the
10685 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10687 values do not include any ACPI driver or OSPM code. The debug version of
10689 code includes the debug output trace mechanism and has a much larger code
10690 and data size. Note that these values will vary depending on the
10692 of the compiler and the compiler options used during generation.
10695 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10696 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10698 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10699 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10702 2) iASL Compiler/Disassembler:
10704 Fixed an internal error that was generated for any forward references to
10708 ----------------------------------------
10709 13 January 2006. Summary of changes for version 20060113:
10711 1) ACPI CA Core Subsystem:
10713 Added 2006 copyright to all module headers and signons. This affects
10714 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10717 Enhanced the ACPICA error reporting in order to simplify user migration
10719 the non-debug version of ACPICA. Replaced all instances of the
10720 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10722 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10723 respectively. This preserves all error and warning messages in the non-
10725 version of the ACPICA code (this has been referred to as the "debug lite"
10726 option.) Over 200 cases were converted to create a total of over 380
10727 error/warning messages across the ACPICA code. This increases the code
10729 data size of the default non-debug version of the code somewhat (about
10731 but all error/warning reporting may be disabled if desired (and code
10732 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10733 configuration option. The size of the debug version of ACPICA remains
10737 Fixed a memory leak within the AML Debugger "Set" command. One object was
10738 not properly deleted for every successful invocation of the command.
10740 Code and Data Size: The current and previous library sizes for the core
10741 subsystem are shown below. These are the code and data sizes for the
10742 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10744 values do not include any ACPI driver or OSPM code. The debug version of
10746 code includes the debug output trace mechanism and has a much larger code
10747 and data size. Note that these values will vary depending on the
10749 of the compiler and the compiler options used during generation.
10752 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10753 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10755 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10756 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10759 2) iASL Compiler/Disassembler:
10761 The compiler now officially supports the ACPI 3.0a specification that was
10762 released on December 30, 2005. (Specification is available at
10765 ----------------------------------------
10766 16 December 2005. Summary of changes for version 20051216:
10768 1) ACPI CA Core Subsystem:
10770 Implemented optional support to allow unresolved names within ASL Package
10771 objects. A null object is inserted in the package when a named reference
10772 cannot be located in the current namespace. Enabled via the interpreter
10773 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10775 that contain such code.
10777 Implemented an optimization to the initialization sequence that can
10779 boot time. During ACPI device initialization, the _STA method is now run
10781 and only if the _INI method exists. The _STA method is used to determine
10783 the device is present; An _INI can only be run if _STA returns present,
10785 it is a waste of time to run the _STA method if the _INI does not exist.
10786 (Prototype and assistance from Dong Wei)
10788 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10790 available in the current compiler. Otherwise, the default (void *) cast
10794 Fixed some possible memory leaks found within the execution path of the
10795 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10797 Fixed a problem introduced in the 20051202 release where an exception is
10798 generated during method execution if a control method attempts to declare
10801 Moved resource descriptor string constants that are used by both the AML
10802 disassembler and AML debugger to the common utilities directory so that
10803 these components are independent.
10805 Implemented support in the AcpiExec utility (-e switch) to globally
10807 exceptions during control method execution (method is not aborted.)
10809 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10812 Code and Data Size: The current and previous library sizes for the core
10813 subsystem are shown below. These are the code and data sizes for the
10814 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10816 values do not include any ACPI driver or OSPM code. The debug version of
10818 code includes the debug output trace mechanism and has a much larger code
10819 and data size. Note that these values will vary depending on the
10821 of the compiler and the compiler options used during generation.
10824 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10825 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10827 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10828 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10831 2) iASL Compiler/Disassembler:
10833 Fixed a problem where a CPU stack overflow fault could occur if a
10835 method call was made from within a Return statement.
10837 ----------------------------------------
10838 02 December 2005. Summary of changes for version 20051202:
10840 1) ACPI CA Core Subsystem:
10842 Modified the parsing of control methods to no longer create namespace
10843 objects during the first pass of the parse. Objects are now created only
10844 during the execute phase, at the moment the namespace creation operator
10846 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10848 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10849 reentrant control methods are protected by an AML mutex. The mutex will
10851 correctly block multiple threads from attempting to create the same
10855 Increased the number of available Owner Ids for namespace object tracking
10856 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10858 some machines with a large number of ACPI tables (either static or
10861 Fixed a problem with the AcpiExec utility where a fault could occur when
10863 -b switch (batch mode) is used.
10865 Enhanced the namespace dump routine to output the owner ID for each
10868 Code and Data Size: The current and previous library sizes for the core
10869 subsystem are shown below. These are the code and data sizes for the
10870 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10872 values do not include any ACPI driver or OSPM code. The debug version of
10874 code includes the debug output trace mechanism and has a much larger code
10875 and data size. Note that these values will vary depending on the
10877 of the compiler and the compiler options used during generation.
10880 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10881 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10883 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10884 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10887 2) iASL Compiler/Disassembler:
10889 Fixed a parse error during compilation of certain Switch/Case constructs.
10891 simplify the parse, the grammar now allows for multiple Default
10893 and this error is now detected and flagged during the analysis phase.
10895 Disassembler: The disassembly now includes the contents of the original
10896 table header within a comment at the start of the file. This includes the
10897 name and version of the original ASL compiler.
10899 ----------------------------------------
10900 17 November 2005. Summary of changes for version 20051117:
10902 1) ACPI CA Core Subsystem:
10904 Fixed a problem in the AML parser where the method thread count could be
10905 decremented below zero if any errors occurred during the method parse
10907 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10909 This also fixed a related regression with the mechanism that detects and
10910 corrects methods that cannot properly handle reentrancy (related to the
10911 deployment of the new OwnerId mechanism.)
10913 Eliminated the pre-parsing of control methods (to detect errors) during
10914 table load. Related to the problem above, this was causing unwind issues
10916 any errors occurred during the parse, and it seemed to be overkill. A
10918 load should not be aborted if there are problems with any single control
10919 method, thus rendering this feature rather pointless.
10921 Fixed a problem with the new table-driven resource manager where an
10923 buffer overflow could occur for small resource templates.
10925 Implemented a new external interface, AcpiGetVendorResource. This
10927 will find and return a vendor-defined resource descriptor within a _CRS
10929 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10932 Removed the length limit (200) on string objects as per the upcoming ACPI
10933 3.0A specification. This affects the following areas of the interpreter:
10935 any implicit conversion of a Buffer to a String, 2) a String object
10937 of the ASL Concatentate operator, 3) the String object result of the ASL
10940 Fixed a problem in the Windows OS interface layer (OSL) where a
10942 on a semaphore object would incorrectly timeout. This allows the
10943 multithreading features of the AcpiExec utility to work properly under
10946 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10947 the recently added file named "utresrc.c".
10949 Code and Data Size: The current and previous library sizes for the core
10950 subsystem are shown below. These are the code and data sizes for the
10951 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10953 values do not include any ACPI driver or OSPM code. The debug version of
10955 code includes the debug output trace mechanism and has a much larger code
10956 and data size. Note that these values will vary depending on the
10958 of the compiler and the compiler options used during generation.
10961 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10962 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10964 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10965 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10968 2) iASL Compiler/Disassembler:
10970 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10971 specification. For the iASL compiler, this means that string literals
10973 the source ASL can be of any length.
10975 Enhanced the listing output to dump the AML code for resource descriptors
10976 immediately after the ASL code for each descriptor, instead of in a block
10978 the end of the entire resource template.
10980 Enhanced the compiler debug output to dump the entire original parse tree
10981 constructed during the parse phase, before any transforms are applied to
10983 tree. The transformed tree is dumped also.
10985 ----------------------------------------
10986 02 November 2005. Summary of changes for version 20051102:
10988 1) ACPI CA Core Subsystem:
10990 Modified the subsystem initialization sequence to improve GPE support.
10992 GPE initialization has been split into two parts in order to defer
10994 of the _PRW methods (Power Resources for Wake) until after the hardware
10996 fully initialized and the SCI handler is installed. This allows the _PRW
10997 methods to access fields protected by the Global Lock. This will fix
10999 where a NO_GLOBAL_LOCK exception has been seen during initialization.
11001 Converted the ACPI internal object disassemble and display code within
11003 AML debugger to fully table-driven operation, reducing code size and
11004 increasing maintainability.
11006 Fixed a regression with the ConcatenateResTemplate() ASL operator
11008 in the 20051021 release.
11010 Implemented support for "local" internal ACPI object types within the
11011 debugger "Object" command and the AcpiWalkNamespace external interfaces.
11012 These local types include RegionFields, BankFields, IndexFields, Alias,
11016 Moved common AML resource handling code into a new file, "utresrc.c".
11018 code is shared by both the Resource Manager and the AML Debugger.
11020 Code and Data Size: The current and previous library sizes for the core
11021 subsystem are shown below. These are the code and data sizes for the
11022 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11024 values do not include any ACPI driver or OSPM code. The debug version of
11026 code includes the debug output trace mechanism and has a much larger code
11027 and data size. Note that these values will vary depending on the
11029 of the compiler and the compiler options used during generation.
11032 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11033 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11035 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
11036 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11039 2) iASL Compiler/Disassembler:
11041 Fixed a problem with very large initializer lists (more than 4000
11043 for both Buffer and Package objects where the parse stack could overflow.
11045 Enhanced the pre-compile source code scan for non-ASCII characters to
11047 characters within comment fields. The scan is now always performed and is
11049 longer optional, detecting invalid characters within a source file
11050 immediately rather than during the parse phase or later.
11052 Enhanced the ASL grammar definition to force early reductions on all
11054 style grammar elements so that the overall parse stack usage is greatly
11055 reduced. This should improve performance and reduce the possibility of
11059 Eliminated all reduce/reduce conflicts in the iASL parser generation.
11061 with the addition of a %expected statement, the compiler generates from
11062 source with no warnings.
11064 Fixed a possible segment fault in the disassembler if the input filename
11065 does not contain a "dot" extension (Thomas Renninger).
11067 ----------------------------------------
11068 21 October 2005. Summary of changes for version 20051021:
11070 1) ACPI CA Core Subsystem:
11072 Implemented support for the EM64T and other x86-64 processors. This
11073 essentially entails recognizing that these processors support non-aligned
11074 memory transfers. Previously, all 64-bit processors were assumed to lack
11075 hardware support for non-aligned transfers.
11077 Completed conversion of the Resource Manager to nearly full table-driven
11078 operation. Specifically, the resource conversion code (convert AML to
11079 internal format and the reverse) and the debug code to dump internal
11080 resource descriptors are fully table-driven, reducing code and data size
11082 improving maintainability.
11084 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
11086 on 64-bit processors instead of a fixed 32-bit word. (With assistance
11088 Alexey Starikovskiy)
11090 Implemented support within the resource conversion code for the Type-
11091 Specific byte within the various ACPI 3.0 *WordSpace macros.
11093 Fixed some issues within the resource conversion code for the type-
11095 flags for both Memory and I/O address resource descriptors. For Memory,
11096 implemented support for the MTP and TTP flags. For I/O, split the TRS and
11097 TTP flags into two separate fields.
11099 Code and Data Size: The current and previous library sizes for the core
11100 subsystem are shown below. These are the code and data sizes for the
11101 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11103 values do not include any ACPI driver or OSPM code. The debug version of
11105 code includes the debug output trace mechanism and has a much larger code
11106 and data size. Note that these values will vary depending on the
11108 of the compiler and the compiler options used during generation.
11111 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11112 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11114 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11115 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11119 2) iASL Compiler/Disassembler:
11121 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
11123 corresponding ResourceSource string was not also present in a resource
11124 descriptor declaration. This restriction caused problems with existing
11125 AML/ASL code that includes the Index byte without the string. When such
11127 was disassembled, it could not be compiled without modification. Further,
11128 the modified code created a resource template with a different size than
11130 original, breaking code that used fixed offsets into the resource
11134 Removed a recent feature of the disassembler to ignore a lone
11136 byte. This byte is now emitted if present so that the exact AML can be
11137 reproduced when the disassembled code is recompiled.
11139 Improved comments and text alignment for the resource descriptor code
11140 emitted by the disassembler.
11142 Implemented disassembler support for the ACPI 3.0 AccessSize field within
11144 Register() resource descriptor.
11146 ----------------------------------------
11147 30 September 2005. Summary of changes for version 20050930:
11149 1) ACPI CA Core Subsystem:
11151 Completed a major overhaul of the Resource Manager code - specifically,
11152 optimizations in the area of the AML/internal resource conversion code.
11154 code has been optimized to simplify and eliminate duplicated code, CPU
11156 use has been decreased by optimizing function parameters and local
11157 variables, and naming conventions across the manager have been
11159 for clarity and ease of maintenance (this includes function, parameter,
11160 variable, and struct/typedef names.) The update may force changes in some
11161 driver code, depending on how resources are handled by the host OS.
11163 All Resource Manager dispatch and information tables have been moved to a
11164 single location for clarity and ease of maintenance. One new file was
11165 created, named "rsinfo.c".
11167 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
11168 guarantee that the argument is not evaluated twice, making them less
11170 to macro side-effects. However, since there exists the possibility of
11171 additional stack use if a particular compiler cannot optimize them (such
11173 in the debug generation case), the original macros are optionally
11175 Note that some invocations of the return_VALUE macro may now cause size
11176 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
11178 eliminate these. (From Randy Dunlap)
11180 Implemented a new mechanism to enable debug tracing for individual
11182 methods. A new external interface, AcpiDebugTrace, is provided to enable
11183 this mechanism. The intent is to allow the host OS to easily enable and
11184 disable tracing for problematic control methods. This interface can be
11185 easily exposed to a user or debugger interface if desired. See the file
11186 psxface.c for details.
11188 AcpiUtCallocate will now return a valid pointer if a length of zero is
11189 specified - a length of one is used and a warning is issued. This matches
11190 the behavior of AcpiUtAllocate.
11192 Code and Data Size: The current and previous library sizes for the core
11193 subsystem are shown below. These are the code and data sizes for the
11194 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11196 values do not include any ACPI driver or OSPM code. The debug version of
11198 code includes the debug output trace mechanism and has a much larger code
11199 and data size. Note that these values will vary depending on the
11201 of the compiler and the compiler options used during generation.
11204 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11205 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11207 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11208 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11211 2) iASL Compiler/Disassembler:
11213 A remark is issued if the effective compile-time length of a package or
11214 buffer is zero. Previously, this was a warning.
11216 ----------------------------------------
11217 16 September 2005. Summary of changes for version 20050916:
11219 1) ACPI CA Core Subsystem:
11221 Fixed a problem within the Resource Manager where support for the Generic
11222 Register descriptor was not fully implemented. This descriptor is now
11224 recognized, parsed, disassembled, and displayed.
11226 Completely restructured the Resource Manager code to utilize table-driven
11227 dispatch and lookup, eliminating many of the large switch() statements.
11229 reduces overall subsystem code size and code complexity. Affects the
11230 resource parsing and construction, disassembly, and debug dump output.
11232 Cleaned up and restructured the debug dump output for all resource
11233 descriptors. Improved readability of the output and reduced code size.
11235 Fixed a problem where changes to internal data structures caused the
11236 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
11238 Code and Data Size: The current and previous library sizes for the core
11239 subsystem are shown below. These are the code and data sizes for the
11240 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11242 values do not include any ACPI driver or OSPM code. The debug version of
11244 code includes the debug output trace mechanism and has a much larger code
11245 and data size. Note that these values will vary depending on the
11247 of the compiler and the compiler options used during generation.
11250 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11251 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11253 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11254 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11257 2) iASL Compiler/Disassembler:
11259 Updated the disassembler to automatically insert an EndDependentFn()
11261 into the ASL stream if this macro is missing in the original AML code,
11262 simplifying compilation of the resulting ASL module.
11264 Fixed a problem in the disassembler where a disassembled ResourceSource
11265 string (within a large resource descriptor) was not surrounded by quotes
11267 not followed by a comma, causing errors when the resulting ASL module was
11268 compiled. Also, escape sequences within a ResourceSource string are now
11269 handled correctly (especially "\\")
11271 ----------------------------------------
11272 02 September 2005. Summary of changes for version 20050902:
11274 1) ACPI CA Core Subsystem:
11276 Fixed a problem with the internal Owner ID allocation and deallocation
11277 mechanisms for control method execution and recursive method invocation.
11278 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
11279 messages seen on some systems. Recursive method invocation depth is
11280 currently limited to 255. (Alexey Starikovskiy)
11282 Completely eliminated all vestiges of support for the "module-level
11283 executable code" until this support is fully implemented and debugged.
11285 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
11286 some systems that invoke this support.
11288 Fixed a problem within the resource manager code where the transaction
11290 for a 64-bit address descriptor were handled incorrectly in the type-
11291 specific flag byte.
11293 Consolidated duplicate code within the address descriptor resource
11295 code, reducing overall subsystem code size.
11297 Fixed a fault when using the AML debugger "disassemble" command to
11298 disassemble individual control methods.
11300 Removed references to the "release_current" directory within the Unix
11303 Code and Data Size: The current and previous core subsystem library sizes
11304 are shown below. These are the code and data sizes for the acpica.lib
11305 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
11306 include any ACPI driver or OSPM code. The debug version of the code
11308 the debug output trace mechanism and has a much larger code and data
11310 Note that these values will vary depending on the efficiency of the
11312 and the compiler options used during generation.
11315 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11316 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11318 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11319 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11322 2) iASL Compiler/Disassembler:
11324 Implemented an error check for illegal duplicate values in the interrupt
11326 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
11329 Implemented error checking for the Irq() and IrqNoFlags() macros to
11331 too many values in the interrupt list (16 max) and invalid values in the
11332 list (range 0 - 15)
11334 The maximum length string literal within an ASL file is now restricted to
11335 200 characters as per the ACPI specification.
11337 Fixed a fault when using the -ln option (generate namespace listing).
11339 Implemented an error check to determine if a DescriptorName within a
11340 resource descriptor has already been used within the current scope.
11342 ----------------------------------------
11343 15 August 2005. Summary of changes for version 20050815:
11345 1) ACPI CA Core Subsystem:
11347 Implemented a full bytewise compare to determine if a table load request
11349 attempting to load a duplicate table. The compare is performed if the
11351 signatures and table lengths match. This will allow different tables with
11352 the same OEM Table ID and revision to be loaded - probably against the
11354 specification, but discovered in the field nonetheless.
11356 Added the changes.txt logfile to each of the zipped release packages.
11358 Code and Data Size: Current and previous core subsystem library sizes are
11359 shown below. These are the code and data sizes for the acpica.lib
11361 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11362 any ACPI driver or OSPM code. The debug version of the code includes the
11363 debug output trace mechanism and has a much larger code and data size.
11365 that these values will vary depending on the efficiency of the compiler
11367 the compiler options used during generation.
11370 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11371 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11373 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11374 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11377 2) iASL Compiler/Disassembler:
11379 Fixed a problem where incorrect AML code could be generated for Package
11380 objects if optimization is disabled (via the -oa switch).
11382 Fixed a problem with where incorrect AML code is generated for variable-
11383 length packages when the package length is not specified and the number
11385 initializer values is greater than 255.
11388 ----------------------------------------
11389 29 July 2005. Summary of changes for version 20050729:
11391 1) ACPI CA Core Subsystem:
11393 Implemented support to ignore an attempt to install/load a particular
11395 table more than once. Apparently there exists BIOS code that repeatedly
11396 attempts to load the same SSDT upon certain events. With assistance from
11397 Venkatesh Pallipadi.
11399 Restructured the main interface to the AML parser in order to correctly
11400 handle all exceptional conditions. This will prevent leakage of the
11402 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11404 machines. With assistance from Alexey Starikovskiy.
11406 Support for "module level code" has been disabled in this version due to
11408 number of issues that have appeared on various machines. The support can
11410 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11411 compilation. When the issues are fully resolved, the code will be enabled
11415 Modified the internal functions for debug print support to define the
11416 FunctionName parameter as a (const char *) for compatibility with
11418 built-in macros such as __FUNCTION__, etc.
11420 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11422 Implemented support to display an object count summary for the AML
11424 commands Object and Methods.
11426 Code and Data Size: Current and previous core subsystem library sizes are
11427 shown below. These are the code and data sizes for the acpica.lib
11429 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11430 any ACPI driver or OSPM code. The debug version of the code includes the
11431 debug output trace mechanism and has a much larger code and data size.
11433 that these values will vary depending on the efficiency of the compiler
11435 the compiler options used during generation.
11438 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11439 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11441 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11442 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11445 2) iASL Compiler/Disassembler:
11447 Fixed a regression that appeared in the 20050708 version of the compiler
11448 where an error message was inadvertently emitted for invocations of the
11450 reserved control method.
11452 ----------------------------------------
11453 08 July 2005. Summary of changes for version 20050708:
11455 1) ACPI CA Core Subsystem:
11457 The use of the CPU stack in the debug version of the subsystem has been
11458 considerably reduced. Previously, a debug structure was declared in every
11459 function that used the debug macros. This structure has been removed in
11460 favor of declaring the individual elements as parameters to the debug
11461 functions. This reduces the cumulative stack use during nested execution
11463 ACPI function calls at the cost of a small increase in the code size of
11465 debug version of the subsystem. With assistance from Alexey Starikovskiy
11469 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11470 headers to define a macro that will return the current function name at
11471 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11473 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11474 compiler-dependent header, the function name is saved on the CPU stack
11476 pointer per function.) This mechanism is used because apparently there
11477 exists no standard ANSI-C defined macro that that returns the function
11480 Redesigned and reimplemented the "Owner ID" mechanism used to track
11481 namespace objects created/deleted by ACPI tables and control method
11482 execution. A bitmap is now used to allocate and free the IDs, thus
11484 the wraparound problem present in the previous implementation. The size
11486 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11489 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11491 flag definitions within the headers for the predefined ACPI tables. These
11492 have been replaced by UINT8_BIT in order to increase the code portability
11494 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11495 eliminate bitfields entirely because of a lack of portability.
11497 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11499 is a frequently used function and this improvement increases the
11501 of the entire subsystem (Alexey Starikovskiy).
11503 Fixed several possible memory leaks and the inverse - premature object
11504 deletion (Alexey Starikovskiy).
11506 Code and Data Size: Current and previous core subsystem library sizes are
11507 shown below. These are the code and data sizes for the acpica.lib
11509 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11510 any ACPI driver or OSPM code. The debug version of the code includes the
11511 debug output trace mechanism and has a much larger code and data size.
11513 that these values will vary depending on the efficiency of the compiler
11515 the compiler options used during generation.
11518 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11519 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11521 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11522 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11524 ----------------------------------------
11525 24 June 2005. Summary of changes for version 20050624:
11527 1) ACPI CA Core Subsystem:
11529 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11530 the host-defined cache object. This allows the OSL implementation to
11532 and type this object in any manner desired, simplifying the OSL
11533 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11534 Linux, and should be defined in the OS-specific header file for other
11535 operating systems as required.
11537 Changed the interface to AcpiOsAcquireObject to directly return the
11538 requested object as the function return (instead of ACPI_STATUS.) This
11539 change was made for performance reasons, since this is the purpose of the
11540 interface in the first place. AcpiOsAcquireObject is now similar to the
11541 AcpiOsAllocate interface.
11543 Implemented a new AML debugger command named Businfo. This command
11545 information about all devices that have an associate _PRT object. The
11547 _HID, _UID, and _CID are displayed for these devices.
11549 Modified the initialization sequence in AcpiInitializeSubsystem to call
11551 OSL interface AcpiOslInitialize first, before any local initialization.
11553 change was required because the global initialization now calls OSL
11556 Enhanced the Dump command to display the entire contents of Package
11558 (including all sub-objects and their values.)
11560 Restructured the code base to split some files because of size and/or
11561 because the code logically belonged in a separate file. New files are
11563 below. All makefiles and project files included in the ACPI CA release
11566 utilities/utcache.c /* Local cache interfaces */
11567 utilities/utmutex.c /* Local mutex support */
11568 utilities/utstate.c /* State object support */
11569 interpreter/parser/psloop.c /* Main AML parse loop */
11571 Code and Data Size: Current and previous core subsystem library sizes are
11572 shown below. These are the code and data sizes for the acpica.lib
11574 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11575 any ACPI driver or OSPM code. The debug version of the code includes the
11576 debug output trace mechanism and has a much larger code and data size.
11578 that these values will vary depending on the efficiency of the compiler
11580 the compiler options used during generation.
11583 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11584 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11586 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11587 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11590 2) iASL Compiler/Disassembler:
11592 Fixed a regression introduced in version 20050513 where the use of a
11594 object within a Case() statement caused a compile time exception. The
11595 original behavior has been restored (a Match() operator is emitted.)
11597 ----------------------------------------
11598 17 June 2005. Summary of changes for version 20050617:
11600 1) ACPI CA Core Subsystem:
11602 Moved the object cache operations into the OS interface layer (OSL) to
11604 the host OS to handle these operations if desired (for example, the Linux
11605 OSL will invoke the slab allocator). This support is optional; the
11607 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11609 code in the ACPI CA core. The new OSL interfaces are shown below. See
11610 utalloc.c for an example implementation, and acpiosxf.h for the exact
11611 interface definitions. With assistance from Alexey Starikovskiy.
11615 AcpiOsAcquireObject
11616 AcpiOsReleaseObject
11618 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11620 and restore a flags parameter. This fits better with many OS lock models.
11621 Note: the current execution state (interrupt handler or not) is no longer
11622 passed to these interfaces. If necessary, the OSL must determine this
11624 by itself, a simple and fast operation. With assistance from Alexey
11627 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11628 present if the revision of the RSDP was 2 or greater. According to the
11630 specification, the XSDT is optional in all cases, and the table manager
11631 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11632 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11636 Fixed an interpreter problem with the Mid() operator in the case of an
11638 string where the resulting output string is of zero length. It now
11640 returns a valid, null terminated string object instead of a string object
11641 with a null pointer.
11643 Fixed a problem with the control method argument handling to allow a
11645 to an Arg object that already contains an object of type Device. The
11647 object is now correctly overwritten. Previously, an error was returned.
11650 Enhanced the debugger Find command to emit object values in addition to
11652 found object pathnames. The output format is the same as the dump
11656 Enhanced the debugger Set command. It now has the ability to set the
11658 of any Named integer object in the namespace (Previously, only method
11660 and args could be set.)
11662 Code and Data Size: Current and previous core subsystem library sizes are
11663 shown below. These are the code and data sizes for the acpica.lib
11665 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11666 any ACPI driver or OSPM code. The debug version of the code includes the
11667 debug output trace mechanism and has a much larger code and data size.
11669 that these values will vary depending on the efficiency of the compiler
11671 the compiler options used during generation.
11674 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11675 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11677 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11678 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11681 2) iASL Compiler/Disassembler:
11683 Fixed a regression in the disassembler where if/else/while constructs
11685 output incorrectly. This problem was introduced in the previous release
11686 (20050526). This problem also affected the single-step disassembly in the
11689 Fixed a problem where compiling the reserved _OSI method would randomly
11691 rarely) produce compile errors.
11693 Enhanced the disassembler to emit compilable code in the face of
11695 AML resource descriptors. If the optional ResourceSourceIndex is present,
11696 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11697 disassembly. Otherwise, the resulting code cannot be compiled without
11700 ----------------------------------------
11701 26 May 2005. Summary of changes for version 20050526:
11703 1) ACPI CA Core Subsystem:
11705 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11706 the module level (not within a control method.) These opcodes are
11708 exactly once at the time the table is loaded. This type of code was legal
11710 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11712 order to provide backwards compatibility with earlier BIOS
11714 This eliminates the "Encountered executable code at module level" warning
11715 that was previously generated upon detection of such code.
11717 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11718 inadvertently be generated during the lookup of namespace objects in the
11719 second pass parse of ACPI tables and control methods. It appears that
11721 problem could occur during the resolution of forward references to
11725 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11726 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11727 allows the deadlock detection debug code to be compiled out in the normal
11728 case, improving mutex performance (and overall subsystem performance)
11731 Implemented a handful of miscellaneous fixes for possible memory leaks on
11732 error conditions and error handling control paths. These fixes were
11733 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11735 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11737 to prevent a fault in this error case.
11739 Code and Data Size: Current and previous core subsystem library sizes are
11740 shown below. These are the code and data sizes for the acpica.lib
11742 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11743 any ACPI driver or OSPM code. The debug version of the code includes the
11744 debug output trace mechanism and has a much larger code and data size.
11746 that these values will vary depending on the efficiency of the compiler
11748 the compiler options used during generation.
11751 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11752 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11754 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11755 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11758 2) iASL Compiler/Disassembler:
11760 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11761 the module level (not within a control method.) These operators will be
11762 executed once at the time the table is loaded. This type of code was
11764 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11765 compiler in order to provide backwards compatibility with earlier BIOS
11769 The ACPI integer width (specified via the table revision ID or the -r
11770 override, 32 or 64 bits) is now used internally during compile-time
11772 folding to ensure that constants are truncated to 32 bits if necessary.
11773 Previously, the revision ID value was only emitted in the AML table
11776 An error message is now generated for the Mutex and Method operators if
11778 SyncLevel parameter is outside the legal range of 0 through 15.
11780 Fixed a problem with the Method operator ParameterTypes list handling
11782 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11784 The actual underlying implementation of method argument typechecking is
11785 still under development, however.
11787 ----------------------------------------
11788 13 May 2005. Summary of changes for version 20050513:
11790 1) ACPI CA Core Subsystem:
11792 Implemented support for PCI Express root bridges -- added support for
11794 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11796 The interpreter now automatically truncates incoming 64-bit constants to
11798 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11800 also affects the iASL compiler constant folding. (Note: as per below, the
11801 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11803 Fixed a problem where string and buffer objects with "static" pointers
11804 (pointers to initialization data within an ACPI table) were not handled
11805 consistently. The internal object copy operation now always copies the
11807 to a newly allocated buffer, regardless of whether the source object is
11810 Fixed a problem with the FromBCD operator where an implicit result
11811 conversion was improperly performed while storing the result to the
11813 operand. Since this is an "explicit conversion" operator, the implicit
11814 conversion should never be performed on the output.
11816 Fixed a problem with the CopyObject operator where a copy to an existing
11817 named object did not always completely overwrite the existing object
11819 at name. Specifically, a buffer-to-buffer copy did not delete the
11823 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11825 structs for consistency.
11827 Code and Data Size: Current and previous core subsystem library sizes are
11828 shown below. These are the code and data sizes for the acpica.lib
11830 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11831 any ACPI driver or OSPM code. The debug version of the code includes the
11832 debug output trace mechanism and has a much larger code and data size.
11834 that these values will vary depending on the efficiency of the compiler
11836 the compiler options used during generation.
11839 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11840 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11841 Current Release: (Same sizes)
11842 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11843 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11846 2) iASL Compiler/Disassembler:
11848 The compiler now emits a warning if an attempt is made to generate a 64-
11850 integer constant from within a 32-bit ACPI table (Revision < 2). The
11852 is truncated to 32 bits.
11854 Fixed a problem with large package objects: if the static length of the
11855 package is greater than 255, the "variable length package" opcode is
11856 emitted. Previously, this caused an error. This requires an update to the
11857 ACPI spec, since it currently (incorrectly) states that packages larger
11859 255 elements are not allowed.
11861 The disassembler now correctly handles variable length packages and
11863 larger than 255 elements.
11865 ----------------------------------------
11866 08 April 2005. Summary of changes for version 20050408:
11868 1) ACPI CA Core Subsystem:
11870 Fixed three cases in the interpreter where an "index" argument to an ASL
11871 function was still (internally) 32 bits instead of the required 64 bits.
11872 This was the Index argument to the Index, Mid, and Match operators.
11874 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11876 not a POSIX-defined function and not present in most kernel-level C
11877 libraries. All references to the C library strupr function have been
11881 Completed the deployment of static functions/prototypes. All prototypes
11883 the static attribute have been moved from the headers to the owning C
11886 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11887 utility). This option allows the utility to extract individual ACPI
11889 from the output of AcpiDmp. It provides the same functionality of the
11890 acpixtract.pl perl script without the worry of setting the correct perl
11891 options. AcpiBin runs on Windows and has not yet been generated/validated
11893 the Linux/Unix environment (but should be soon).
11895 Updated and fixed the table dump option for AcpiBin (-d). This option
11896 converts a single ACPI table to a hex/ascii file, similar to the output
11900 Code and Data Size: Current and previous core subsystem library sizes are
11901 shown below. These are the code and data sizes for the acpica.lib
11903 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11904 any ACPI driver or OSPM code. The debug version of the code includes the
11905 debug output trace mechanism and has a much larger code and data size.
11907 that these values will vary depending on the efficiency of the compiler
11909 the compiler options used during generation.
11912 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11913 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11915 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11916 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11919 2) iASL Compiler/Disassembler:
11921 Disassembler fix: Added a check to ensure that the table length found in
11923 ACPI table header within the input file is not longer than the actual
11925 file size. This indicates some kind of file or table corruption.
11927 ----------------------------------------
11928 29 March 2005. Summary of changes for version 20050329:
11930 1) ACPI CA Core Subsystem:
11932 An error is now generated if an attempt is made to create a Buffer Field
11934 length zero (A CreateField with a length operand of zero.)
11936 The interpreter now issues a warning whenever executable code at the
11938 level is detected during ACPI table load. This will give some idea of the
11939 prevalence of this type of code.
11941 Implemented support for references to named objects (other than control
11942 methods) within package objects.
11944 Enhanced package object output for the debug object. Package objects are
11946 completely dumped, showing all elements.
11948 Enhanced miscellaneous object output for the debug object. Any object can
11949 now be written to the debug object (for example, a device object can be
11950 written, and the type of the object will be displayed.)
11952 The "static" qualifier has been added to all local functions across both
11954 core subsystem and the iASL compiler.
11956 The number of "long" lines (> 80 chars) within the source has been
11957 significantly reduced, by about 1/3.
11959 Cleaned up all header files to ensure that all CA/iASL functions are
11960 prototyped (even static functions) and the formatting is consistent.
11962 Two new header files have been added, acopcode.h and acnames.h.
11964 Removed several obsolete functions that were no longer used.
11966 Code and Data Size: Current and previous core subsystem library sizes are
11967 shown below. These are the code and data sizes for the acpica.lib
11969 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11970 any ACPI driver or OSPM code. The debug version of the code includes the
11971 debug output trace mechanism and has a much larger code and data size.
11973 that these values will vary depending on the efficiency of the compiler
11975 the compiler options used during generation.
11978 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11979 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11981 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11982 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11986 2) iASL Compiler/Disassembler:
11988 Fixed a problem with the resource descriptor generation/support. For the
11989 ResourceSourceIndex and the ResourceSource fields, both must be present,
11991 both must be not present - can't have one without the other.
11993 The compiler now returns non-zero from the main procedure if any errors
11995 occurred during the compilation.
11998 ----------------------------------------
11999 09 March 2005. Summary of changes for version 20050309:
12001 1) ACPI CA Core Subsystem:
12003 The string-to-buffer implicit conversion code has been modified again
12005 a change to the ACPI specification. In order to match the behavior of
12007 other major ACPI implementation, the target buffer is no longer truncated
12009 the source string is smaller than an existing target buffer. This change
12010 requires an update to the ACPI spec, and should eliminate the recent
12011 AE_AML_BUFFER_LIMIT issues.
12013 The "implicit return" support was rewritten to a new algorithm that
12015 the general case. Rather than attempt to determine when a method is about
12017 exit, the result of every ASL operator is saved momentarily until the
12019 next ASL operator is executed. Therefore, no matter how the method exits,
12020 there will always be a saved implicit return value. This feature is only
12021 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
12023 AE_AML_NO_RETURN_VALUE errors when enabled.
12025 Implemented implicit conversion support for the predicate (operand) of
12027 If, Else, and While operators. String and Buffer arguments are
12029 converted to Integers.
12031 Changed the string-to-integer conversion behavior to match the new ACPI
12032 errata: "If no integer object exists, a new integer is created. The ASCII
12033 string is interpreted as a hexadecimal constant. Each string character is
12034 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
12035 with the first character as the most significant digit, and ending with
12037 first non-hexadecimal character or end-of-string." This means that the
12039 non-hex character terminates the conversion and this is the code that was
12042 Fixed a problem where the ObjectType operator would fail (fault) when
12044 on an Index of a Package which pointed to a null package element. The
12045 operator now properly returns zero (Uninitialized) in this case.
12047 Fixed a problem where the While operator used excessive memory by not
12048 properly popping the result stack during execution. There was no memory
12050 after execution, however. (Code provided by Valery Podrezov.)
12052 Fixed a problem where references to control methods within Package
12054 caused the method to be invoked, instead of producing a reference object
12055 pointing to the method.
12057 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
12059 improve performance and reduce code size. (Code provided by Alexey
12062 Code and Data Size: Current and previous core subsystem library sizes are
12063 shown below. These are the code and data sizes for the acpica.lib
12065 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12066 any ACPI driver or OSPM code. The debug version of the code includes the
12067 debug output trace mechanism and has a much larger code and data size.
12069 that these values will vary depending on the efficiency of the compiler
12071 the compiler options used during generation.
12074 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12075 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12077 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12078 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12081 2) iASL Compiler/Disassembler:
12083 Fixed a problem with the Return operator with no arguments. Since the AML
12084 grammar for the byte encoding requires an operand for the Return opcode,
12086 compiler now emits a Return(Zero) for this case. An ACPI specification
12087 update has been written for this case.
12089 For tables other than the DSDT, namepath optimization is automatically
12090 disabled. This is because SSDTs can be loaded anywhere in the namespace,
12092 compiler has no knowledge of where, and thus cannot optimize namepaths.
12094 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
12095 inadvertently omitted from the ACPI specification, and will require an
12096 update to the spec.
12098 The source file scan for ASCII characters is now optional (-a). This
12100 was made because some vendors place non-ascii characters within comments.
12101 However, the scan is simply a brute-force byte compare to ensure all
12102 characters in the file are in the range 0x00 to 0x7F.
12104 Fixed a problem with the CondRefOf operator where the compiler was
12105 inappropriately checking for the existence of the target. Since the point
12107 the operator is to check for the existence of the target at run-time, the
12108 compiler no longer checks for the target existence.
12110 Fixed a problem where errors generated from the internal AML interpreter
12111 during constant folding were not handled properly, causing a fault.
12113 Fixed a problem with overly aggressive range checking for the Stall
12114 operator. The valid range (max 255) is now only checked if the operand is
12116 type Integer. All other operand types cannot be statically checked.
12118 Fixed a problem where control method references within the RefOf,
12120 and ObjectType operators were not treated properly. They are now treated
12122 actual references, not method invocations.
12124 Fixed and enhanced the "list namespace" option (-ln). This option was
12126 a number of releases ago.
12128 Improved error handling for the Field, IndexField, and BankField
12130 The compiler now cleanly reports and recovers from errors in the field
12131 component (FieldUnit) list.
12133 Fixed a disassembler problem where the optional ResourceDescriptor fields
12134 TRS and TTP were not always handled correctly.
12136 Disassembler - Comments in output now use "//" instead of "/*"
12138 ----------------------------------------
12139 28 February 2005. Summary of changes for version 20050228:
12141 1) ACPI CA Core Subsystem:
12143 Fixed a problem where the result of an Index() operator (an object
12144 reference) must increment the reference count on the target object for
12146 life of the object reference.
12148 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
12149 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
12151 resource descriptors.
12153 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
12154 Space Descriptor" string, indicating interpreter support for the
12158 Implemented header support for the new ACPI 3.0 FADT flag bits.
12160 Implemented header support for the new ACPI 3.0 PCI Express bits for the
12162 status/enable registers.
12164 Updated header support for the MADT processor local Apic struct and MADT
12165 platform interrupt source struct for new ACPI 3.0 fields.
12167 Implemented header support for the SRAT and SLIT ACPI tables.
12169 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
12173 Code and Data Size: Current and previous core subsystem library sizes are
12174 shown below. These are the code and data sizes for the acpica.lib
12176 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12177 any ACPI driver or OSPM code. The debug version of the code includes the
12178 debug output trace mechanism and has a much larger code and data size.
12180 that these values will vary depending on the efficiency of the compiler
12182 the compiler options used during generation.
12185 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12186 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12188 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12189 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12192 2) iASL Compiler/Disassembler:
12194 Fixed a problem with the internal 64-bit String-to-integer conversion
12196 strings less than two characters long.
12198 Fixed a problem with constant folding where the result of the Index()
12199 operator can not be considered a constant. This means that Index() cannot
12201 a type3 opcode and this will require an update to the ACPI specification.
12203 Disassembler: Implemented support for the TTP, MTP, and TRS resource
12204 descriptor fields. These fields were inadvertently ignored and not output
12206 the disassembly of the resource descriptor.
12209 ----------------------------------------
12210 11 February 2005. Summary of changes for version 20050211:
12212 1) ACPI CA Core Subsystem:
12214 Implemented ACPI 3.0 support for implicit conversion within the Match()
12215 operator. MatchObjects can now be of type integer, buffer, or string
12217 of just type integer. Package elements are implicitly converted to the
12219 of the MatchObject. This change aligns the behavior of Match() with the
12220 behavior of the other logical operators (LLess(), etc.) It also requires
12222 errata change to the ACPI specification as this support was intended for
12223 ACPI 3.0, but was inadvertently omitted.
12225 Fixed a problem with the internal implicit "to buffer" conversion.
12227 that are converted to buffers will cause buffer truncation if the string
12229 smaller than the target buffer. Integers that are converted to buffers
12231 not cause buffer truncation, only zero extension (both as per the ACPI
12232 spec.) The problem was introduced when code was added to truncate the
12233 buffer, but this should not be performed in all cases, only the string
12236 Fixed a problem with the Buffer and Package operators where the
12238 would get confused if two such operators were used as operands to an ASL
12239 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
12240 stack was not being popped after the execution of these operators,
12242 in an AE_NO_RETURN_VALUE exception.
12244 Fixed a problem with constructs of the form Store(Index(...),...). The
12245 reference object returned from Index was inadvertently resolved to an
12247 value. This problem was introduced in version 20050114 when the behavior
12249 Store() was modified to restrict the object types that can be used as the
12250 source operand (to match the ACPI specification.)
12252 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
12254 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
12256 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
12258 Code and Data Size: Current and previous core subsystem library sizes are
12259 shown below. These are the code and data sizes for the acpica.lib
12261 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12262 any ACPI driver or OSPM code. The debug version of the code includes the
12263 debug output trace mechanism and has a much larger code and data size.
12265 that these values will vary depending on the efficiency of the compiler
12267 the compiler options used during generation.
12270 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12271 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12273 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12274 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12277 2) iASL Compiler/Disassembler:
12279 Fixed a code generation problem in the constant folding optimization code
12280 where incorrect code was generated if a constant was reduced to a buffer
12281 object (i.e., a reduced type 5 opcode.)
12283 Fixed a typechecking problem for the ToBuffer operator. Caused by an
12284 incorrect return type in the internal opcode information table.
12286 ----------------------------------------
12287 25 January 2005. Summary of changes for version 20050125:
12289 1) ACPI CA Core Subsystem:
12291 Fixed a recently introduced problem with the Global Lock where the
12292 underlying semaphore was not created. This problem was introduced in
12293 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
12294 Acquire() operation on _GL.
12296 The local object cache is now optional, and is disabled by default. Both
12297 AcpiExec and the iASL compiler enable the cache because they run in user
12298 mode and this enhances their performance. #define
12299 ACPI_ENABLE_OBJECT_CACHE
12300 to enable the local cache.
12302 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
12304 optional "implicit return" support where an error was returned if no
12306 object was expected, but one was implicitly returned. AE_OK is now
12308 in this case and the implicitly returned object is deleted.
12309 AcpiUtEvaluateObject is only occasionally used, and only to execute
12311 methods such as _STA and _INI where the return type is known up front.
12313 Fixed a few issues with the internal convert-to-integer code. It now
12315 an error if an attempt is made to convert a null string, a string of only
12316 blanks/tabs, or a zero-length buffer. This affects both implicit
12318 and explicit conversion via the ToInteger() operator.
12320 The internal debug code in AcpiUtAcquireMutex has been commented out. It
12322 not needed for normal operation and should increase the performance of
12324 entire subsystem. The code remains in case it is needed for debug
12328 The AcpiExec source and makefile are included in the Unix/Linux package
12332 Code and Data Size: Current and previous core subsystem library sizes are
12333 shown below. These are the code and data sizes for the acpica.lib
12335 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12336 any ACPI driver or OSPM code. The debug version of the code includes the
12337 debug output trace mechanism and has a much larger code and data size.
12339 that these values will vary depending on the efficiency of the compiler
12341 the compiler options used during generation.
12344 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12345 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12347 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12348 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12350 2) iASL Compiler/Disassembler:
12352 Switch/Case support: A warning is now issued if the type of the Switch
12354 cannot be determined at compile time. For example, Switch(Arg0) will
12355 generate the warning, and the type is assumed to be an integer. As per
12357 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
12361 Switch/Case support: Implemented support for buffer and string objects as
12362 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
12363 buffers and strings.
12365 Switch/Case support: The emitted code for the LEqual() comparisons now
12367 the switch value as the first operand, not the second. The case value is
12369 the second operand, and this allows the case value to be implicitly
12370 converted to the type of the switch value, not the other way around.
12372 Switch/Case support: Temporary variables are now emitted immediately
12374 the control method, not at the global level. This means that there are
12376 36 temps available per-method, not 36 temps per-module as was the case
12378 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
12380 ----------------------------------------
12381 14 January 2005. Summary of changes for version 20050114:
12383 Added 2005 copyright to all module headers. This affects every module in
12384 the core subsystem, iASL compiler, and the utilities.
12386 1) ACPI CA Core Subsystem:
12388 Fixed an issue with the String-to-Buffer conversion code where the string
12389 null terminator was not included in the buffer after conversion, but
12391 is existing ASL that assumes the string null terminator is included. This
12393 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12394 introduced in the previous version when the code was updated to correctly
12395 set the converted buffer size as per the ACPI specification. The ACPI
12397 is ambiguous and will be updated to specify that the null terminator must
12399 included in the converted buffer. This also affects the ToBuffer() ASL
12402 Fixed a problem with the Mid() ASL/AML operator where it did not work
12403 correctly on Buffer objects. Newly created sub-buffers were not being
12408 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12409 performed on the OemId and OemTableId table header fields. These fields
12411 not null terminated, so strncmp is now used instead of strcmp.
12413 Implemented a restriction on the Store() ASL/AML operator to align the
12414 behavior with the ACPI specification. Previously, any object could be
12416 as the source operand. Now, the only objects that may be used are
12418 Buffers, Strings, Packages, Object References, and DDB Handles. If
12419 necessary, the original behavior can be restored by enabling the
12420 EnableInterpreterSlack flag.
12422 Enhanced the optional "implicit return" support to allow an implicit
12424 value from methods that are invoked externally via the AcpiEvaluateObject
12425 interface. This enables implicit returns from the _STA and _INI methods,
12428 Changed the Revision() ASL/AML operator to return the current version of
12430 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12432 the supported ACPI version (This is the function of the _REV method).
12434 Updated the _REV predefined method to return the currently supported
12438 Implemented batch mode option for the AcpiExec utility (-b).
12440 Code and Data Size: Current and previous core subsystem library sizes are
12441 shown below. These are the code and data sizes for the acpica.lib
12443 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12444 any ACPI driver or OSPM code. The debug version of the code includes the
12445 debug output trace mechanism and has a much larger code and data size.
12447 that these values will vary depending on the efficiency of the compiler
12449 the compiler options used during generation.
12452 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12453 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12455 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12456 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12458 ----------------------------------------
12459 10 December 2004. Summary of changes for version 20041210:
12461 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12462 ACPI CA core subsystem.
12464 1) ACPI CA Core Subsystem:
12466 Fixed a problem in the ToDecimalString operator where the resulting
12468 length was incorrectly calculated. The length is now calculated exactly,
12469 eliminating incorrect AE_STRING_LIMIT exceptions.
12471 Fixed a problem in the ToHexString operator to allow a maximum 200
12473 string to be produced.
12475 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12477 routine where the length of the resulting buffer was not truncated to the
12478 new size (if the target buffer already existed).
12480 Code and Data Size: Current and previous core subsystem library sizes are
12481 shown below. These are the code and data sizes for the acpica.lib
12483 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12484 any ACPI driver or OSPM code. The debug version of the code includes the
12485 debug output trace mechanism and has a much larger code and data size.
12487 that these values will vary depending on the efficiency of the compiler
12489 the compiler options used during generation.
12492 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12493 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12495 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12496 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12499 2) iASL Compiler/Disassembler:
12501 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12502 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12503 Includes support in the disassembler.
12505 Implemented support for the new (ACPI 3.0) parameter to the Register
12509 Fixed a problem where the _HE resource name for the Interrupt macro was
12510 referencing bit 0 instead of bit 1.
12512 Implemented check for maximum 255 interrupts in the Interrupt macro.
12514 Fixed a problem with the predefined resource descriptor names where
12515 incorrect AML code was generated if the offset within the resource buffer
12516 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12517 but did not update the surrounding package lengths.
12519 Changes to the Dma macro: All channels within the channel list must be
12521 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12522 optional (default is BusMaster).
12524 Implemented check for maximum 7 data bytes for the VendorShort macro.
12526 The ReadWrite parameter is now optional for the Memory32 and similar
12529 ----------------------------------------
12530 03 December 2004. Summary of changes for version 20041203:
12532 1) ACPI CA Core Subsystem:
12534 The low-level field insertion/extraction code (exfldio) has been
12536 rewritten to eliminate unnecessary complexity, bugs, and boundary
12539 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12541 operators where the input operand could be inadvertently deleted if no
12542 conversion was necessary (e.g., if the input to ToInteger was an Integer
12545 Fixed a problem with the ToDecimalString and ToHexString where an
12547 exception code was returned if the resulting string would be > 200 chars.
12548 AE_STRING_LIMIT is now returned.
12550 Fixed a problem with the Concatenate operator where AE_OK was always
12551 returned, even if the operation failed.
12553 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12554 semaphores to be allocated.
12556 Code and Data Size: Current and previous core subsystem library sizes are
12557 shown below. These are the code and data sizes for the acpica.lib
12559 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12560 any ACPI driver or OSPM code. The debug version of the code includes the
12561 debug output trace mechanism and has a much larger code and data size.
12563 that these values will vary depending on the efficiency of the compiler
12565 the compiler options used during generation.
12568 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12569 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12571 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12572 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12575 2) iASL Compiler/Disassembler:
12577 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12578 recently introduced in 20041119.
12580 Fixed a problem with the ToUUID macro where the upper nybble of each
12582 byte was inadvertently set to zero.
12584 ----------------------------------------
12585 19 November 2004. Summary of changes for version 20041119:
12587 1) ACPI CA Core Subsystem:
12589 Fixed a problem in the internal ConvertToInteger routine where new
12591 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12593 buffers and strings to integers.
12595 Implemented support to store a value to an Index() on a String object.
12597 is an ACPI 2.0 feature that had not yet been implemented.
12599 Implemented new behavior for storing objects to individual package
12601 (via the Index() operator). The previous behavior was to invoke the
12603 conversion rules if an object was already present at the index. The new
12604 behavior is to simply delete any existing object and directly store the
12606 object. Although the ACPI specification seems unclear on this subject,
12608 ACPI implementations behave in this manner. (This is the root of the
12609 AE_BAD_HEX_CONSTANT issue.)
12611 Modified the RSDP memory scan mechanism to support the extended checksum
12613 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12614 RSDP signature is found with a valid checksum.
12616 Code and Data Size: Current and previous core subsystem library sizes are
12617 shown below. These are the code and data sizes for the acpica.lib
12619 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12620 any ACPI driver or OSPM code. The debug version of the code includes the
12621 debug output trace mechanism and has a much larger code and data size.
12623 that these values will vary depending on the efficiency of the compiler
12625 the compiler options used during generation.
12628 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12629 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12631 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12632 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12635 2) iASL Compiler/Disassembler:
12637 Fixed a missing semicolon in the aslcompiler.y file.
12639 ----------------------------------------
12640 05 November 2004. Summary of changes for version 20041105:
12642 1) ACPI CA Core Subsystem:
12644 Implemented support for FADT revision 2. This was an interim table
12646 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12648 Implemented optional support to allow uninitialized LocalX and ArgX
12649 variables in a control method. The variables are initialized to an
12651 object with a value of zero. This support is enabled by setting the
12652 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12654 Implemented support for Integer objects for the SizeOf operator. Either
12656 or 8 is returned, depending on the current integer size (32-bit or 64-
12658 depending on the parent table revision).
12660 Fixed a problem in the implementation of the SizeOf and ObjectType
12662 where the operand was resolved to a value too early, causing incorrect
12663 return values for some objects.
12665 Fixed some possible memory leaks during exceptional conditions.
12667 Code and Data Size: Current and previous core subsystem library sizes are
12668 shown below. These are the code and data sizes for the acpica.lib
12670 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12671 any ACPI driver or OSPM code. The debug version of the code includes the
12672 debug output trace mechanism and has a much larger code and data size.
12674 that these values will vary depending on the efficiency of the compiler
12676 the compiler options used during generation.
12679 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12680 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12682 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12683 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12686 2) iASL Compiler/Disassembler:
12688 Implemented support for all ACPI 3.0 reserved names and methods.
12690 Implemented all ACPI 3.0 grammar elements in the front-end, including
12691 support for semicolons.
12693 Implemented the ACPI 3.0 Function() and ToUUID() macros
12695 Fixed a problem in the disassembler where a Scope() operator would not be
12696 emitted properly if the target of the scope was in another table.
12698 ----------------------------------------
12699 15 October 2004. Summary of changes for version 20041015:
12701 Note: ACPI CA is currently undergoing an in-depth and complete formal
12702 evaluation to test/verify the following areas. Other suggestions are
12703 welcome. This will result in an increase in the frequency of releases and
12704 the number of bug fixes in the next few months.
12705 - Functional tests for all ASL/AML operators
12706 - All implicit/explicit type conversions
12707 - Bit fields and operation regions
12708 - 64-bit math support and 32-bit-only "truncated" math support
12709 - Exceptional conditions, both compiler and interpreter
12710 - Dynamic object deletion and memory leaks
12711 - ACPI 3.0 support when implemented
12712 - External interfaces to the ACPI subsystem
12715 1) ACPI CA Core Subsystem:
12717 Fixed two alignment issues on 64-bit platforms - within debug statements
12719 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12721 field within the non-aligned ACPI generic address structure.
12723 Fixed a problem in the Increment and Decrement operators where incorrect
12724 operand resolution could result in the inadvertent modification of the
12725 original integer when the integer is passed into another method as an
12726 argument and the arg is then incremented/decremented.
12728 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12730 BCD number were truncated during conversion.
12732 Fixed a problem in the ToDecimal operator where the length of the
12734 string could be set incorrectly too long if the input operand was a
12738 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12740 within a buffer would prematurely terminate a compare between buffer
12743 Added a check for string overflow (>200 characters as per the ACPI
12744 specification) during the Concatenate operator with two string operands.
12746 Code and Data Size: Current and previous core subsystem library sizes are
12747 shown below. These are the code and data sizes for the acpica.lib
12749 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12750 any ACPI driver or OSPM code. The debug version of the code includes the
12751 debug output trace mechanism and has a much larger code and data size.
12753 that these values will vary depending on the efficiency of the compiler
12755 the compiler options used during generation.
12758 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12759 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12761 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12762 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12766 2) iASL Compiler/Disassembler:
12768 Allow the use of the ObjectType operator on uninitialized Locals and Args
12769 (returns 0 as per the ACPI specification).
12771 Fixed a problem where the compiler would fault if there was a syntax
12773 in the FieldName of all of the various CreateXXXField operators.
12775 Disallow the use of lower case letters within the EISAID macro, as per
12777 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12779 U is an uppercase letter and N is a hex digit.
12782 ----------------------------------------
12783 06 October 2004. Summary of changes for version 20041006:
12785 1) ACPI CA Core Subsystem:
12787 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12788 implements a 64-bit timer with 100 nanosecond granularity.
12790 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12791 implement the ACPI 3.0 Timer operator. This allows the host OS to
12793 the timer with the best clock available. Also, it keeps the core
12795 out of the clock handling business, since the host OS (usually) performs
12798 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12799 functions use a 64-bit address which is part of the packed ACPI Generic
12800 Address Structure. Since the structure is non-aligned, the alignment
12802 are now used to extract the address to a local variable before use.
12804 Fixed a problem where the ToInteger operator assumed all input strings
12806 hexadecimal. The operator now handles both decimal strings and hex
12808 (prefixed with "0x").
12810 Fixed a problem where the string length in the string object created as a
12811 result of the internal ConvertToString procedure could be incorrect. This
12812 potentially affected all implicit conversions and also the
12814 and ToHexString operators.
12816 Fixed two problems in the ToString operator. If the length parameter was
12817 zero, an incorrect string object was created and the value of the input
12818 length parameter was inadvertently changed from zero to Ones.
12820 Fixed a problem where the optional ResourceSource string in the
12822 resource macro was ignored.
12824 Simplified the interfaces to the internal division functions, reducing
12826 size and complexity.
12828 Code and Data Size: Current and previous core subsystem library sizes are
12829 shown below. These are the code and data sizes for the acpica.lib
12831 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12832 any ACPI driver or OSPM code. The debug version of the code includes the
12833 debug output trace mechanism and has a much larger code and data size.
12835 that these values will vary depending on the efficiency of the compiler
12837 the compiler options used during generation.
12840 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12841 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12843 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12844 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12847 2) iASL Compiler/Disassembler:
12849 Implemented support for the ACPI 3.0 Timer operator.
12851 Fixed a problem where the Default() operator was inadvertently ignored in
12853 Switch/Case block. This was a problem in the translation of the Switch
12854 statement to If...Else pairs.
12856 Added support to allow a standalone Return operator, with no parentheses
12860 Fixed a problem with code generation for the ElseIf operator where the
12861 translated Else...If parse tree was improperly constructed leading to the
12864 ----------------------------------------
12865 22 September 2004. Summary of changes for version 20040922:
12867 1) ACPI CA Core Subsystem:
12869 Fixed a problem with the implementation of the LNot() operator where
12871 was not returned for the TRUE case. Changed the code to return Ones
12873 of (!Arg) which was usually 1. This change affects iASL constant folding
12875 this operator also.
12877 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12879 initialized properly -- Now zero the entire buffer in this case where the
12880 buffer already exists.
12882 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12883 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12884 related code considerably. This will require changes/updates to all OS
12885 interface layers (OSLs.)
12887 Implemented a new external interface, AcpiInstallExceptionHandler, to
12889 a system exception handler to be installed. This handler is invoked upon
12891 run-time exception that occurs during control method execution.
12893 Added support for the DSDT in AcpiTbFindTable. This allows the
12894 DataTableRegion() operator to access the local copy of the DSDT.
12896 Code and Data Size: Current and previous core subsystem library sizes are
12897 shown below. These are the code and data sizes for the acpica.lib
12899 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12900 any ACPI driver or OSPM code. The debug version of the code includes the
12901 debug output trace mechanism and has a much larger code and data size.
12903 that these values will vary depending on the efficiency of the compiler
12905 the compiler options used during generation.
12908 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12909 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12911 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12912 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12915 2) iASL Compiler/Disassembler:
12917 Fixed a problem with constant folding and the LNot operator. LNot was
12918 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12920 could result in the generation of an incorrect folded/reduced constant.
12922 End-Of-File is now allowed within a "//"-style comment. A parse error no
12923 longer occurs if such a comment is at the very end of the input ASL
12927 Implemented the "-r" option to override the Revision in the table header.
12928 The initial use of this option will be to simplify the evaluation of the
12930 interpreter by allowing a single ASL source module to be compiled for
12932 32-bit or 64-bit integers.
12935 ----------------------------------------
12936 27 August 2004. Summary of changes for version 20040827:
12938 1) ACPI CA Core Subsystem:
12940 - Implemented support for implicit object conversion in the non-numeric
12941 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12943 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12944 the second operand is implicitly converted on the fly to match the type
12946 the first operand. For example:
12948 LEqual (Source1, Source2)
12950 Source1 and Source2 must each evaluate to an integer, a string, or a
12952 The data type of Source1 dictates the required type of Source2. Source2
12954 implicitly converted if necessary to match the type of Source1.
12956 - Updated and corrected the behavior of the string conversion support.
12958 rules concerning conversion of buffers to strings (according to the ACPI
12959 specification) are as follows:
12961 ToDecimalString - explicit byte-wise conversion of buffer to string of
12962 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12964 conversion of buffer to string of hex values (0-FF) separated by commas.
12965 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12967 copy with no transform except NULL terminated. Any other implicit buffer-
12969 string conversion - byte-wise conversion of buffer to string of hex
12971 (0-FF) separated by spaces.
12973 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12975 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12977 one byte too short in the case of a node in the root scope. This could
12978 cause a fault during debug output.
12980 - Code and Data Size: Current and previous core subsystem library sizes
12982 shown below. These are the code and data sizes for the acpica.lib
12984 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12985 any ACPI driver or OSPM code. The debug version of the code includes the
12986 debug output trace mechanism and has a much larger code and data size.
12988 that these values will vary depending on the efficiency of the compiler
12990 the compiler options used during generation.
12993 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12994 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12996 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12997 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
13000 2) iASL Compiler/Disassembler:
13002 - Fixed a Linux generation error.
13005 ----------------------------------------
13006 16 August 2004. Summary of changes for version 20040816:
13008 1) ACPI CA Core Subsystem:
13010 Designed and implemented support within the AML interpreter for the so-
13011 called "implicit return". This support returns the result of the last
13013 operation within a control method, in the absence of an explicit Return()
13014 operator. A few machines depend on this behavior, even though it is not
13015 explicitly supported by the ASL language. It is optional support that
13017 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
13019 Removed support for the PCI_Config address space from the internal low
13021 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
13022 support was not used internally, and would not work correctly anyway
13024 the PCI bus number and segment number were not supported. There are
13025 separate interfaces for PCI configuration space access because of the
13029 Code and Data Size: Current and previous core subsystem library sizes are
13030 shown below. These are the code and data sizes for the acpica.lib
13032 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13033 any ACPI driver or OSPM code. The debug version of the code includes the
13034 debug output trace mechanism and has a much larger code and data size.
13036 that these values will vary depending on the efficiency of the compiler
13038 the compiler options used during generation.
13041 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13042 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13044 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
13045 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13048 2) iASL Compiler/Disassembler:
13050 Fixed a problem where constants in ASL expressions at the root level (not
13051 within a control method) could be inadvertently truncated during code
13052 generation. This problem was introduced in the 20040715 release.
13055 ----------------------------------------
13056 15 July 2004. Summary of changes for version 20040715:
13058 1) ACPI CA Core Subsystem:
13060 Restructured the internal HW GPE interfaces to pass/track the current
13062 of interrupts (enabled/disabled) in order to avoid possible deadlock and
13063 increase flexibility of the interfaces.
13065 Implemented a "lexicographical compare" for String and Buffer objects
13067 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
13069 as per further clarification to the ACPI specification. Behavior is
13071 to C library "strcmp".
13073 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
13074 external function. In the 32-bit non-debug case, the stack use has been
13075 reduced from 168 bytes to 32 bytes.
13077 Deployed a new run-time configuration flag,
13078 AcpiGbl_EnableInterpreterSlack,
13079 whose purpose is to allow the AML interpreter to forgive certain bad AML
13080 constructs. Default setting is FALSE.
13082 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
13084 support code. If enabled, it allows field access to go beyond the end of
13086 region definition if the field is within the region length rounded up to
13088 next access width boundary (a common coding error.)
13090 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
13091 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
13093 symbols are lowercased by the latest version of the AcpiSrc tool.
13095 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
13096 rename "Register" to simply "Reg" to prevent certain compilers from
13099 Code and Data Size: Current and previous core subsystem library sizes are
13100 shown below. These are the code and data sizes for the acpica.lib
13102 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13103 any ACPI driver or OSPM code. The debug version of the code includes the
13104 debug output trace mechanism and has a much larger code and data size.
13106 that these values will vary depending on the efficiency of the compiler
13108 the compiler options used during generation.
13111 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13112 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13114 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13115 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13118 2) iASL Compiler/Disassembler:
13120 Implemented full support for Package objects within the Case() operator.
13121 Note: The Break() operator is currently not supported within Case blocks
13122 (TermLists) as there is some question about backward compatibility with
13127 Fixed a problem where complex terms were not supported properly within
13131 Eliminated extraneous warning for compiler-emitted reserved names of the
13132 form "_T_x". (Used in Switch/Case operators.)
13134 Eliminated optimization messages for "_T_x" objects and small constants
13135 within the DefinitionBlock operator.
13138 ----------------------------------------
13139 15 June 2004. Summary of changes for version 20040615:
13141 1) ACPI CA Core Subsystem:
13143 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13145 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13148 All directory names in the entire source package are lower case, as they
13149 were in earlier releases.
13151 Implemented "Disassemble" command in the AML debugger that will
13153 a single control method.
13155 Code and Data Size: Current and previous core subsystem library sizes are
13156 shown below. These are the code and data sizes for the acpica.lib
13158 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13159 any ACPI driver or OSPM code. The debug version of the code includes the
13160 debug output trace mechanism and has a much larger code and data size.
13162 that these values will vary depending on the efficiency of the compiler
13164 the compiler options used during generation.
13167 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13168 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13171 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13172 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13175 2) iASL Compiler/Disassembler:
13177 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13179 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13182 All directory names in the entire source package are lower case, as they
13183 were in earlier releases.
13185 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
13188 Fixed an issue with the Windows version of the compiler where later
13190 of Windows place the FADT in the registry under the name "FADT" and not
13191 "FACP" as earlier versions did. This applies when using the -g or -
13192 d<nofilename> options. The compiler now looks for both strings as
13195 Fixed a problem with compiler namepath optimization where a namepath
13197 the Scope() operator could not be optimized if the namepath was a subpath
13199 the current scope path.
13201 ----------------------------------------
13202 27 May 2004. Summary of changes for version 20040527:
13204 1) ACPI CA Core Subsystem:
13206 Completed a new design and implementation for EBDA (Extended BIOS Data
13208 support in the RSDP scan code. The original code improperly scanned for
13210 EBDA by simply scanning from memory location 0 to 0x400. The correct
13212 is to first obtain the EBDA pointer from within the BIOS data area, then
13213 scan 1K of memory starting at the EBDA pointer. There appear to be few
13215 any machines that place the RSDP in the EBDA, however.
13217 Integrated a fix for a possible fault during evaluation of BufferField
13218 arguments. Obsolete code that was causing the problem was removed.
13220 Found and fixed a problem in the Field Support Code where data could be
13221 corrupted on a bit field read that starts on an aligned boundary but does
13222 not end on an aligned boundary. Merged the read/write "datum length"
13223 calculation code into a common procedure.
13225 Rolled in a couple of changes to the FreeBSD-specific header.
13228 Code and Data Size: Current and previous core subsystem library sizes are
13229 shown below. These are the code and data sizes for the acpica.lib
13231 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13232 any ACPI driver or OSPM code. The debug version of the code includes the
13233 debug output trace mechanism and has a much larger code and data size.
13235 that these values will vary depending on the efficiency of the compiler
13237 the compiler options used during generation.
13240 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13241 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13243 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13244 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13247 2) iASL Compiler/Disassembler:
13249 Fixed a generation warning produced by some overly-verbose compilers for
13253 ----------------------------------------
13254 14 May 2004. Summary of changes for version 20040514:
13256 1) ACPI CA Core Subsystem:
13258 Fixed a problem where hardware GPE enable bits sometimes not set properly
13259 during and after GPE method execution. Result of 04/27 changes.
13261 Removed extra "clear all GPEs" when sleeping/waking.
13263 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
13264 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
13266 the new AcpiEv* calls as appropriate.
13268 ACPI_OS_NAME was removed from the OS-specific headers. The default name
13270 now "Microsoft Windows NT" for maximum compatibility. However this can
13272 changed by modifying the acconfig.h file.
13274 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
13275 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
13277 Run _INI methods on ThermalZone objects. This is against the ACPI
13278 specification, but there is apparently ASL code in the field that has
13280 _INI methods, and apparently "other" AML interpreters execute them.
13282 Performed a full 16/32/64 bit lint that resulted in some small changes.
13284 Added a sleep simulation command to the AML debugger to test sleep code.
13286 Code and Data Size: Current and previous core subsystem library sizes are
13287 shown below. These are the code and data sizes for the acpica.lib
13289 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13290 any ACPI driver or OSPM code. The debug version of the code includes the
13291 debug output trace mechanism and has a much larger code and data size.
13293 that these values will vary depending on the efficiency of the compiler
13295 the compiler options used during generation.
13298 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13299 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13301 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13302 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13304 ----------------------------------------
13305 27 April 2004. Summary of changes for version 20040427:
13307 1) ACPI CA Core Subsystem:
13309 Completed a major overhaul of the GPE handling within ACPI CA. There are
13310 now three types of GPEs: wake-only, runtime-only, and combination
13312 The only GPEs allowed to be combination wake/run are for button-style
13313 devices such as a control-method power button, control-method sleep
13315 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
13317 referenced by any _PRW methods are marked for "runtime" and hardware
13318 enabled. Any GPE that is referenced by a _PRW method is marked for
13320 (and disabled at runtime). However, at sleep time, only those GPEs that
13321 have been specifically enabled for wake via the AcpiEnableGpe interface
13323 actually be hardware enabled.
13325 A new external interface has been added, AcpiSetGpeType(), that is meant
13327 be used by device drivers to force a GPE to a particular type. It will
13329 especially useful for the drivers for the button devices mentioned above.
13331 Completed restructuring of the ACPI CA initialization sequence so that
13332 default operation region handlers are installed before GPEs are
13334 and the _PRW methods are executed. This will prevent errors when the
13336 methods attempt to access system memory or I/O space.
13338 GPE enable/disable no longer reads the GPE enable register. We now keep
13340 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
13341 thus no longer depend on the hardware to maintain these bits.
13343 Always clear the wake status and fixed/GPE status bits before sleep, even
13346 Improved the AML debugger output for displaying the GPE blocks and their
13349 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
13353 Fixed a problem where the physical address was incorrectly calculated
13355 the Load() operator was used to directly load from an Operation Region
13357 loading from a Field object.) Also added check for minimum table length
13361 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
13364 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
13365 consistency with the other fields returned.
13367 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
13368 structure for each GPE in the system, so the size of this structure is
13371 CPU stack requirement reduction: Cleaned up the method execution and
13373 evaluation paths so that now a parameter structure is passed, instead of
13374 copying the various method parameters over and over again.
13376 In evregion.c: Correctly exit and reenter the interpreter region if and
13377 only if dispatching an operation region request to a user-installed
13379 Do not exit/reenter when dispatching to a default handler (e.g., default
13380 system memory or I/O handlers)
13383 Notes for updating drivers for the new GPE support. The following
13385 must be made to ACPI-related device drivers that are attached to one or
13387 GPEs: (This information will be added to the ACPI CA Programmer
13390 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13392 explicitly call AcpiEnableGpe.
13393 2) There is a new interface called AcpiSetGpeType. This should be called
13394 before enabling the GPE. Also, this interface will automatically disable
13395 the GPE if it is currently enabled.
13396 3) AcpiEnableGpe no longer supports a GPE type flag.
13398 Specific drivers that must be changed:
13400 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13401 AeGpeHandler, NULL);
13402 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13403 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13405 2) Button Drivers (Power, Lid, Sleep):
13406 Run _PRW method under parent device
13407 If _PRW exists: /* This is a control-method button */
13408 Extract GPE number and possibly GpeDevice
13409 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13410 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13412 For all other devices that have _PRWs, we automatically set the GPE type
13414 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13416 must be done on a selective basis, usually requiring some kind of user
13418 to allow the user to pick the wake devices.
13421 Code and Data Size: Current and previous core subsystem library sizes are
13422 shown below. These are the code and data sizes for the acpica.lib
13424 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13425 any ACPI driver or OSPM code. The debug version of the code includes the
13426 debug output trace mechanism and has a much larger code and data size.
13428 that these values will vary depending on the efficiency of the compiler
13430 the compiler options used during generation.
13433 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13434 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13437 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13438 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13442 ----------------------------------------
13443 02 April 2004. Summary of changes for version 20040402:
13445 1) ACPI CA Core Subsystem:
13447 Fixed an interpreter problem where an indirect store through an ArgX
13448 parameter was incorrectly applying the "implicit conversion rules" during
13449 the store. From the ACPI specification: "If the target is a method local
13451 argument (LocalX or ArgX), no conversion is performed and the result is
13452 stored directly to the target". The new behavior is to disable implicit
13453 conversion during ALL stores to an ArgX.
13455 Changed the behavior of the _PRW method scan to ignore any and all errors
13456 returned by a given _PRW. This prevents the scan from aborting from the
13457 failure of any single _PRW.
13459 Moved the runtime configuration parameters from the global init procedure
13461 static variables in acglobal.h. This will allow the host to override the
13462 default values easily.
13464 Code and Data Size: Current and previous core subsystem library sizes are
13465 shown below. These are the code and data sizes for the acpica.lib
13467 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13468 any ACPI driver or OSPM code. The debug version of the code includes the
13469 debug output trace mechanism and has a much larger code and data size.
13471 that these values will vary depending on the efficiency of the compiler
13473 the compiler options used during generation.
13476 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13477 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13479 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13480 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13483 2) iASL Compiler/Disassembler:
13485 iASL now fully disassembles SSDTs. However, External() statements are
13487 generated automatically for unresolved symbols at this time. This is a
13488 planned feature for future implementation.
13490 Fixed a scoping problem in the disassembler that occurs when the type of
13492 target of a Scope() operator is overridden. This problem caused an
13493 incorrectly nested internal namespace to be constructed.
13495 Any warnings or errors that are emitted during disassembly are now
13497 out automatically so that the resulting file can be recompiled without
13501 ----------------------------------------
13502 26 March 2004. Summary of changes for version 20040326:
13504 1) ACPI CA Core Subsystem:
13506 Implemented support for "wake" GPEs via interaction between GPEs and the
13507 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13508 identified as a WAKE GPE and by default will no longer be enabled at
13509 runtime. Previously, we were blindly enabling all GPEs with a
13511 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13513 believe this has been the cause of thousands of "spurious" GPEs on some
13516 This new GPE behavior is can be reverted to the original behavior (enable
13517 ALL GPEs at runtime) via a runtime flag.
13519 Fixed a problem where aliased control methods could not access objects
13520 properly. The proper scope within the namespace was not initialized
13521 (transferred to the target of the aliased method) before executing the
13524 Fixed a potential race condition on internal object deletion on the
13526 object in AcpiEvaluateObject.
13528 Integrated a fix for resource descriptors where both _MEM and _MTP were
13529 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13530 wide, 0x0F instead of 0x03.)
13532 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13535 fault in some cases.
13537 Updated Notify() values for debug statements in evmisc.c
13539 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13541 Code and Data Size: Current and previous core subsystem library sizes are
13542 shown below. These are the code and data sizes for the acpica.lib
13544 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13545 any ACPI driver or OSPM code. The debug version of the code includes the
13546 debug output trace mechanism and has a much larger code and data size.
13548 that these values will vary depending on the efficiency of the compiler
13550 the compiler options used during generation.
13554 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13555 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13557 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13558 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13560 ----------------------------------------
13561 11 March 2004. Summary of changes for version 20040311:
13563 1) ACPI CA Core Subsystem:
13565 Fixed a problem where errors occurring during the parse phase of control
13566 method execution did not abort cleanly. For example, objects created and
13567 installed in the namespace were not deleted. This caused all subsequent
13568 invocations of the method to return the AE_ALREADY_EXISTS exception.
13570 Implemented a mechanism to force a control method to "Serialized"
13572 if the method attempts to create namespace objects. (The root of the
13573 AE_ALREADY_EXISTS problem.)
13575 Implemented support for the predefined _OSI "internal" control method.
13576 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13578 "Windows 2001.1", and can be easily upgraded for new strings as
13580 This feature will allow "other" operating systems to execute the fully
13581 tested, "Windows" code path through the ASL code
13583 Global Lock Support: Now allows multiple acquires and releases with any
13584 internal thread. Removed concept of "owning thread" for this special
13587 Fixed two functions that were inappropriately declaring large objects on
13589 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13591 method execution considerably.
13593 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13594 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13596 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13597 defined on the machine.
13599 Implemented two runtime options: One to force all control method
13601 to "Serialized" to mimic Windows behavior, another to disable _OSI
13603 if it causes problems on a given machine.
13605 Code and Data Size: Current and previous core subsystem library sizes are
13606 shown below. These are the code and data sizes for the acpica.lib
13608 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13609 any ACPI driver or OSPM code. The debug version of the code includes the
13610 debug output trace mechanism and has a much larger code and data size.
13612 that these values will vary depending on the efficiency of the compiler
13614 the compiler options used during generation.
13617 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13618 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13620 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13621 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13623 2) iASL Compiler/Disassembler:
13625 Fixed an array size problem for FreeBSD that would cause the compiler to
13628 ----------------------------------------
13629 20 February 2004. Summary of changes for version 20040220:
13632 1) ACPI CA Core Subsystem:
13634 Implemented execution of _SxD methods for Device objects in the
13635 GetObjectInfo interface.
13637 Fixed calls to _SST method to pass the correct arguments.
13639 Added a call to _SST on wake to restore to "working" state.
13641 Check for End-Of-Buffer failure case in the WalkResources interface.
13643 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13644 structures to the beginning of the file.
13646 After wake, clear GPE status register(s) before enabling GPEs.
13648 After wake, clear/enable power button. (Perhaps we should clear/enable
13650 fixed events upon wake.)
13652 Fixed a couple of possible memory leaks in the Namespace manager.
13654 Integrated latest acnetbsd.h file.
13656 ----------------------------------------
13657 11 February 2004. Summary of changes for version 20040211:
13660 1) ACPI CA Core Subsystem:
13662 Completed investigation and implementation of the call-by-reference
13663 mechanism for control method arguments.
13665 Fixed a problem where a store of an object into an indexed package could
13666 fail if the store occurs within a different method than the method that
13667 created the package.
13669 Fixed a problem where the ToDecimal operator could return incorrect
13672 Fixed a problem where the CopyObject operator could fail on some of the
13674 obscure objects (e.g., Reference objects.)
13676 Improved the output of the Debug object to display buffer, package, and
13679 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13681 the expected result.
13683 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13684 ACPI_AML_INTERNAL exception.
13686 Integrated latest version of acfreebsd.h
13688 ----------------------------------------
13689 16 January 2004. Summary of changes for version 20040116:
13691 The purpose of this release is primarily to update the copyright years in
13692 each module, thus causing a huge number of diffs. There are a few small
13693 functional changes, however.
13695 1) ACPI CA Core Subsystem:
13697 Improved error messages when there is a problem finding one or more of
13699 required base ACPI tables
13701 Reintroduced the definition of APIC_HEADER in actbl.h
13703 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13705 Removed extraneous reference to NewObj in dsmthdat.c
13709 Fixed a problem introduced in December that disabled the correct
13711 of Resource Templates
13714 ----------------------------------------
13715 03 December 2003. Summary of changes for version 20031203:
13717 1) ACPI CA Core Subsystem:
13719 Changed the initialization of Operation Regions during subsystem
13720 init to perform two entire walks of the ACPI namespace; The first
13721 to initialize the regions themselves, the second to execute the
13722 _REG methods. This fixed some interdependencies across _REG
13723 methods found on some machines.
13725 Fixed a problem where a Store(Local0, Local1) could simply update
13726 the object reference count, and not create a new copy of the
13727 object if the Local1 is uninitialized.
13729 Implemented support for the _SST reserved method during sleep
13732 Implemented support to clear the SLP_TYP and SLP_EN bits when
13733 waking up, this is apparently required by some machines.
13735 When sleeping, clear the wake status only if SleepState is not S5.
13737 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13738 pointer arithmetic advanced a string pointer too far.
13740 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13741 could be returned if the requested table has not been loaded.
13743 Within the support for IRQ resources, restructured the handling of
13744 the active and edge/level bits.
13746 Fixed a few problems in AcpiPsxExecute() where memory could be
13747 leaked under certain error conditions.
13749 Improved error messages for the cases where the ACPI mode could
13752 Code and Data Size: Current and previous core subsystem library
13753 sizes are shown below. These are the code and data sizes for the
13754 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13755 these values do not include any ACPI driver or OSPM code. The
13756 debug version of the code includes the debug output trace
13757 mechanism and has a much larger code and data size. Note that
13758 these values will vary depending on the efficiency of the compiler
13759 and the compiler options used during generation.
13761 Previous Release (20031029):
13762 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13763 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13765 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13766 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13768 2) iASL Compiler/Disassembler:
13770 Implemented a fix for the iASL disassembler where a bad index was
13771 generated. This was most noticeable on 64-bit platforms
13774 ----------------------------------------
13775 29 October 2003. Summary of changes for version 20031029:
13777 1) ACPI CA Core Subsystem:
13780 Fixed a problem where a level-triggered GPE with an associated
13781 _Lxx control method was incorrectly cleared twice.
13783 Fixed a problem with the Field support code where an access can
13784 occur beyond the end-of-region if the field is non-aligned but
13785 extends to the very end of the parent region (resulted in an
13786 AE_AML_REGION_LIMIT exception.)
13788 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13789 would not get invoked on an RTC event. The RTC event bitmasks for
13790 the PM1 registers were not being initialized properly.
13792 Implemented support for executing _STA and _INI methods for
13793 Processor objects. Although this is currently not part of the
13794 ACPI specification, there is existing ASL code that depends on the
13795 init-time execution of these methods.
13797 Implemented and deployed a GetDescriptorName function to decode
13798 the various types of internal descriptors. Guards against null
13799 descriptors during debug output also.
13801 Implemented and deployed a GetNodeName function to extract the 4-
13802 character namespace node name. This function simplifies the debug
13803 and error output, as well as guarding against null pointers during
13806 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13807 simplify the debug and error output of 64-bit integers. This
13808 macro replaces the HIDWORD and LODWORD macros for dumping these
13811 Updated the implementation of the Stall() operator to only call
13812 AcpiOsStall(), and also return an error if the operand is larger
13813 than 255. This preserves the required behavior of not
13814 relinquishing the processor, as would happen if AcpiOsSleep() was
13815 called for "long stalls".
13817 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13818 initialized are now treated as NOOPs.
13820 Cleaned up a handful of warnings during 64-bit generation.
13822 Fixed a reported error where and incorrect GPE number was passed
13823 to the GPE dispatch handler. This value is only used for error
13824 output, however. Used this opportunity to clean up and streamline
13825 the GPE dispatch code.
13827 Code and Data Size: Current and previous core subsystem library
13828 sizes are shown below. These are the code and data sizes for the
13829 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13830 these values do not include any ACPI driver or OSPM code. The
13832 debug version of the code includes the debug output trace
13833 mechanism and has a much larger code and data size. Note that
13834 these values will vary depending on the efficiency of the compiler
13835 and the compiler options used during generation.
13837 Previous Release (20031002):
13838 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13839 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13841 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13842 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13845 2) iASL Compiler/Disassembler:
13847 Updated the iASL compiler to return an error if the operand to the
13848 Stall() operator is larger than 255.
13851 ----------------------------------------
13852 02 October 2003. Summary of changes for version 20031002:
13855 1) ACPI CA Core Subsystem:
13857 Fixed a problem with Index Fields where the index was not
13858 incremented for fields that require multiple writes to the
13859 index/data registers (Fields that are wider than the data
13862 Fixed a problem with all Field objects where a write could go
13863 beyond the end-of-field if the field was larger than the access
13864 granularity and therefore required multiple writes to complete the
13865 request. An extra write beyond the end of the field could happen
13868 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13869 would incorrectly be returned if the width of the Data Register
13870 was larger than the specified field access width.
13872 Completed fixes for LoadTable() and Unload() and verified their
13873 operation. Implemented full support for the "DdbHandle" object
13874 throughout the ACPI CA subsystem.
13876 Implemented full support for the MADT and ECDT tables in the ACPI
13877 CA header files. Even though these tables are not directly
13878 consumed by ACPI CA, the header definitions are useful for ACPI
13881 Integrated resource descriptor fixes posted to the Linux ACPI
13882 list. This included checks for minimum descriptor length, and
13883 support for trailing NULL strings within descriptors that have
13884 optional string elements.
13886 Code and Data Size: Current and previous core subsystem library
13887 sizes are shown below. These are the code and data sizes for the
13888 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13889 these values do not include any ACPI driver or OSPM code. The
13890 debug version of the code includes the debug output trace
13891 mechanism and has a much larger code and data size. Note that
13892 these values will vary depending on the efficiency of the compiler
13893 and the compiler options used during generation.
13895 Previous Release (20030918):
13896 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13897 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13899 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13900 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13905 Implemented detection of non-ASCII characters within the input
13906 source ASL file. This catches attempts to compile binary (AML)
13907 files early in the compile, with an informative error message.
13909 Fixed a problem where the disassembler would fault if the output
13910 filename could not be generated or if the output file could not be
13913 ----------------------------------------
13914 18 September 2003. Summary of changes for version 20030918:
13917 1) ACPI CA Core Subsystem:
13919 Found and fixed a longstanding problem with the late execution of
13920 the various deferred AML opcodes (such as Operation Regions,
13921 Buffer Fields, Buffers, and Packages). If the name string
13922 specified for the name of the new object placed the object in a
13923 scope other than the current scope, the initialization/execution
13924 of the opcode failed. The solution to this problem was to
13925 implement a mechanism where the late execution of such opcodes
13926 does not attempt to lookup/create the name a second time in an
13927 incorrect scope. This fixes the "region size computed
13928 incorrectly" problem.
13930 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13931 Global Lock AE_BAD_PARAMETER error.
13933 Fixed several 64-bit issues with prototypes, casting and data
13936 Removed duplicate prototype from acdisasm.h
13938 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13940 Code and Data Size: Current and previous core subsystem library
13941 sizes are shown below. These are the code and data sizes for the
13942 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13943 these values do not include any ACPI driver or OSPM code. The
13944 debug version of the code includes the debug output trace
13945 mechanism and has a much larger code and data size. Note that
13946 these values will vary depending on the efficiency of the compiler
13947 and the compiler options used during generation.
13951 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13952 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13954 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13955 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13960 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13961 correct sleep time in seconds.
13963 ----------------------------------------
13964 14 July 2003. Summary of changes for version 20030619:
13966 1) ACPI CA Core Subsystem:
13968 Parse SSDTs in order discovered, as opposed to reverse order
13971 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13978 Dynamically allocate SDT list (suggested by Andi Kleen)
13980 proc function return value cleanups (Andi Kleen)
13982 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13984 Make it so acpismp=force works (reported by Andrew Morton)
13987 ----------------------------------------
13988 19 June 2003. Summary of changes for version 20030619:
13990 1) ACPI CA Core Subsystem:
13992 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13994 Do not acquire a semaphore in the S5 shutdown path.
13996 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13998 Fix sleep/stall code reversal. (Andi Kleen)
14000 Revert a change having to do with control method calling
14005 acpiphp update (Takayoshi Kochi)
14007 Export acpi_disabled for sonypi (Stelian Pop)
14009 Mention acpismp=force in config help
14011 Re-add acpitable.c and acpismp=force. This improves backwards
14013 compatibility and also cleans up the code to a significant degree.
14015 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
14017 ----------------------------------------
14018 22 May 2003. Summary of changes for version 20030522:
14020 1) ACPI CA Core Subsystem:
14022 Found and fixed a reported problem where an AE_NOT_FOUND error
14023 occurred occasionally during _BST evaluation. This turned out to
14024 be an Owner ID allocation issue where a called method did not get
14025 a new ID assigned to it. Eventually, (after 64k calls), the Owner
14026 ID UINT16 would wraparound so that the ID would be the same as the
14027 caller's and the called method would delete the caller's
14030 Implemented extended error reporting for control methods that are
14031 aborted due to a run-time exception. Output includes the exact
14032 AML instruction that caused the method abort, a dump of the method
14033 locals and arguments at the time of the abort, and a trace of all
14034 nested control method calls.
14036 Modified the interpreter to allow the creation of buffers of zero
14037 length from the AML code. Implemented new code to ensure that no
14038 attempt is made to actually allocate a memory buffer (of length
14039 zero) - instead, a simple buffer object with a NULL buffer pointer
14040 and length zero is created. A warning is no longer issued when
14041 the AML attempts to create a zero-length buffer.
14043 Implemented a workaround for the "leading asterisk issue" in
14044 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
14045 asterisk is automatically removed if present in any HID, UID, or
14046 CID strings. The iASL compiler will still flag this asterisk as
14049 Implemented full support for _CID methods that return a package of
14050 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
14051 now additionally returns a device _CID list if present. This
14052 required a change to the external interface in order to pass an
14053 ACPI_BUFFER object as a parameter since the _CID list is of
14056 Fixed a problem with the new AE_SAME_HANDLER exception where
14057 handler initialization code did not know about this exception.
14059 Code and Data Size: Current and previous core subsystem library
14060 sizes are shown below. These are the code and data sizes for the
14061 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14062 these values do not include any ACPI driver or OSPM code. The
14063 debug version of the code includes the debug output trace
14064 mechanism and has a much larger code and data size. Note that
14065 these values will vary depending on the efficiency of the compiler
14066 and the compiler options used during generation.
14068 Previous Release (20030509):
14069 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14070 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14072 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14073 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14078 Fixed a bug in which we would reinitialize the ACPI interrupt
14079 after it was already working, thus disabling all ACPI and the IRQs
14080 for any other device sharing the interrupt. (Thanks to Stian
14083 Toshiba driver update (John Belmonte)
14085 Return only 0 or 1 for our interrupt handler status (Andrew
14091 Fixed a reported problem where multiple (nested) ElseIf()
14092 statements were not handled correctly by the compiler, resulting
14093 in incorrect warnings and incorrect AML code. This was a problem
14094 in both the ASL parser and the code generator.
14099 Added changes to existing interfaces, new exception codes, and new
14100 text concerning reference count object management versus garbage
14103 ----------------------------------------
14104 09 May 2003. Summary of changes for version 20030509.
14107 1) ACPI CA Core Subsystem:
14109 Changed the subsystem initialization sequence to hold off
14110 installation of address space handlers until the hardware has been
14111 initialized and the system has entered ACPI mode. This is because
14112 the installation of space handlers can cause _REG methods to be
14113 run. Previously, the _REG methods could potentially be run before
14114 ACPI mode was enabled.
14116 Fixed some memory leak issues related to address space handler and
14117 notify handler installation. There were some problems with the
14118 reference count mechanism caused by the fact that the handler
14119 objects are shared across several namespace objects.
14121 Fixed a reported problem where reference counts within the
14122 namespace were not properly updated when named objects created by
14123 method execution were deleted.
14125 Fixed a reported problem where multiple SSDTs caused a deletion
14126 issue during subsystem termination. Restructured the table data
14127 structures to simplify the linked lists and the related code.
14129 Fixed a problem where the table ID associated with secondary
14130 tables (SSDTs) was not being propagated into the namespace objects
14131 created by those tables. This would only present a problem for
14132 tables that are unloaded at run-time, however.
14134 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
14135 type as the length parameter (instead of UINT32).
14137 Solved a long-standing problem where an ALREADY_EXISTS error
14138 appears on various systems. This problem could happen when there
14139 are multiple PCI_Config operation regions under a single PCI root
14140 bus. This doesn't happen very frequently, but there are some
14141 systems that do this in the ASL.
14143 Fixed a reported problem where the internal DeleteNode function
14144 was incorrectly handling the case where a namespace node was the
14145 first in the parent's child list, and had additional peers (not
14146 the only child, but first in the list of children.)
14148 Code and Data Size: Current core subsystem library sizes are shown
14149 below. These are the code and data sizes for the acpica.lib
14150 produced by the Microsoft Visual C++ 6.0 compiler, and these
14151 values do not include any ACPI driver or OSPM code. The debug
14152 version of the code includes the debug output trace mechanism and
14153 has a much larger code and data size. Note that these values will
14154 vary depending on the efficiency of the compiler and the compiler
14155 options used during generation.
14158 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14159 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14161 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14162 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14167 Allow ":" in OS override string (Ducrot Bruno)
14169 Kobject fix (Greg KH)
14172 3 iASL Compiler/Disassembler:
14174 Fixed a problem in the generation of the C source code files (AML
14175 is emitted in C source statements for BIOS inclusion) where the
14176 Ascii dump that appears within a C comment at the end of each line
14177 could cause a compile time error if the AML sequence happens to
14178 have an open comment or close comment sequence embedded.
14181 ----------------------------------------
14182 24 April 2003. Summary of changes for version 20030424.
14185 1) ACPI CA Core Subsystem:
14187 Support for big-endian systems has been implemented. Most of the
14188 support has been invisibly added behind big-endian versions of the
14189 ACPI_MOVE_* macros.
14191 Fixed a problem in AcpiHwDisableGpeBlock() and
14192 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
14193 low level hardware write routine. The offset parameter was
14194 actually eliminated from the low level read/write routines because
14195 they had become obsolete.
14197 Fixed a problem where a handler object was deleted twice during
14198 the removal of a fixed event handler.
14203 A fix for SMP systems with link devices was contributed by
14207 (2.5) Return whether we handled the interrupt in our IRQ handler.
14208 (Linux ISRs no longer return void, so we can propagate the handler
14209 return value from the ACPI CA core back to the OS.)
14215 The ACPI CA Programmer Reference has been updated to reflect new
14216 interfaces and changes to existing interfaces.
14218 ----------------------------------------
14219 28 March 2003. Summary of changes for version 20030328.
14221 1) ACPI CA Core Subsystem:
14223 The GPE Block Device support has been completed. New interfaces
14224 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
14225 interfaces (enable, disable, clear, getstatus) have been split
14226 into separate interfaces for Fixed Events and General Purpose
14227 Events (GPEs) in order to support GPE Block Devices properly.
14229 Fixed a problem where the error message "Failed to acquire
14230 semaphore" would appear during operations on the embedded
14233 Code and Data Size: Current core subsystem library sizes are shown
14234 below. These are the code and data sizes for the acpica.lib
14235 produced by the Microsoft Visual C++ 6.0 compiler, and these
14236 values do not include any ACPI driver or OSPM code. The debug
14237 version of the code includes the debug output trace mechanism and
14238 has a much larger code and data size. Note that these values will
14239 vary depending on the efficiency of the compiler and the compiler
14240 options used during generation.
14243 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14244 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14246 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14247 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14250 ----------------------------------------
14251 28 February 2003. Summary of changes for version 20030228.
14254 1) ACPI CA Core Subsystem:
14256 The GPE handling and dispatch code has been completely overhauled
14257 in preparation for support of GPE Block Devices (ID ACPI0006).
14258 This affects internal data structures and code only; there should
14259 be no differences visible externally. One new file has been
14262 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
14263 fields that are used to determine the GPE block lengths. The
14264 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
14265 structures are ignored. This is per the ACPI specification but it
14266 isn't very clear. The full 256 Block 0/1 GPEs are now supported
14267 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
14269 In the SCI interrupt handler, removed the read of the PM1_CONTROL
14270 register to look at the SCI_EN bit. On some machines, this read
14271 causes an SMI event and greatly slows down SCI events. (This may
14272 in fact be the cause of slow battery status response on some
14275 Fixed a problem where a store of a NULL string to a package object
14276 could cause the premature deletion of the object. This was seen
14277 during execution of the battery _BIF method on some systems,
14278 resulting in no battery data being returned.
14280 Added AcpiWalkResources interface to simplify parsing of resource
14283 Code and Data Size: Current core subsystem library sizes are shown
14284 below. These are the code and data sizes for the acpica.lib
14285 produced by the Microsoft Visual C++ 6.0 compiler, and these
14286 values do not include any ACPI driver or OSPM code. The debug
14287 version of the code includes the debug output trace mechanism and
14288 has a much larger code and data size. Note that these values will
14289 vary depending on the efficiency of the compiler and the compiler
14290 options used during generation.
14293 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14294 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14296 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14297 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14302 S3 fixes (Ole Rohne)
14304 Update ACPI PHP driver with to use new acpi_walk_resource API
14307 Add S4BIOS support (Pavel Machek)
14309 Map in entire table before performing checksum (John Stultz)
14311 Expand the mem= cmdline to allow the specification of reserved and
14312 ACPI DATA blocks (Pavel Machek)
14314 Never use ACPI on VISWS
14316 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
14318 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
14319 causing us to think that some systems support C2 when they really
14322 Do not count processor objects for non-present CPUs (Thanks to
14328 Fixed a problem where ASL include files could not be found and
14331 Added support for the _PDC reserved name.
14334 ----------------------------------------
14335 22 January 2003. Summary of changes for version 20030122.
14338 1) ACPI CA Core Subsystem:
14340 Added a check for constructs of the form: Store (Local0, Local0)
14341 where Local0 is not initialized. Apparently, some BIOS
14342 programmers believe that this is a NOOP. Since this store doesn't
14343 do anything anyway, the new prototype behavior will ignore this
14344 error. This is a case where we can relax the strict checking in
14345 the interpreter in the name of compatibility.
14350 The AcpiSrc Source Conversion Utility has been released with the
14351 Linux package for the first time. This is the utility that is
14352 used to convert the ACPI CA base source code to the Linux version.
14354 (Both) Handle P_BLK lengths shorter than 6 more gracefully
14356 (Both) Move more headers to include/acpi, and delete an unused
14359 (Both) Move drivers/acpi/include directory to include/acpi
14361 (Both) Boot functions don't use cmdline, so don't pass it around
14363 (Both) Remove include of unused header (Adrian Bunk)
14365 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
14367 former now also includes the latter, acpiphp.h only needs the one,
14370 (2.5) Make it possible to select method of bios restoring after S3
14371 resume. [=> no more ugly ifdefs] (Pavel Machek)
14373 (2.5) Make proc write interfaces work (Pavel Machek)
14375 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
14377 (2.5) Break out ACPI Perf code into its own module, under cpufreq
14378 (Dominik Brodowski)
14380 (2.4) S4BIOS support (Ducrot Bruno)
14382 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
14388 Added support to disassemble SSDT and PSDTs.
14390 Implemented support to obtain SSDTs from the Windows registry if
14394 ----------------------------------------
14395 09 January 2003. Summary of changes for version 20030109.
14397 1) ACPI CA Core Subsystem:
14399 Changed the behavior of the internal Buffer-to-String conversion
14400 function. The current ACPI specification states that the contents
14401 of the buffer are "converted to a string of two-character
14402 hexadecimal numbers, each separated by a space". Unfortunately,
14403 this definition is not backwards compatible with existing ACPI 1.0
14404 implementations (although the behavior was not defined in the ACPI
14405 1.0 specification). The new behavior simply copies data from the
14406 buffer to the string until a null character is found or the end of
14407 the buffer is reached. The new String object is always null
14408 terminated. This problem was seen during the generation of _BIF
14409 battery data where incorrect strings were returned for battery
14410 type, etc. This will also require an errata to the ACPI
14413 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14414 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14416 Copyright in all module headers (both Linux and non-Linux) has be
14419 Code and Data Size: Current core subsystem library sizes are shown
14420 below. These are the code and data sizes for the acpica.lib
14421 produced by the Microsoft Visual C++ 6.0 compiler, and these
14422 values do not include any ACPI driver or OSPM code. The debug
14423 version of the code includes the debug output trace mechanism and
14424 has a much larger code and data size. Note that these values will
14425 vary depending on the efficiency of the compiler and the compiler
14426 options used during generation.
14429 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14430 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14432 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14433 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14438 Fixed an oops on module insertion/removal (Matthew Tippett)
14440 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14442 (2.5) Replace pr_debug (Randy Dunlap)
14444 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14446 (Both) Eliminate spawning of thread from timer callback, in favor
14449 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14451 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14453 (Both) Add missing statics to button.c (Pavel Machek)
14455 Several changes have been made to the source code translation
14456 utility that generates the Linux Code in order to make the code
14459 All typedefs on structs and unions have been removed in keeping
14460 with the Linux coding style.
14462 Removed the non-Linux SourceSafe module revision number from each
14465 Completed major overhaul of symbols to be lowercased for linux.
14466 Doubled the number of symbols that are lowercased.
14468 Fixed a problem where identifiers within procedure headers and
14469 within quotes were not fully lower cased (they were left with a
14472 Some C macros whose only purpose is to allow the generation of 16-
14473 bit code are now completely removed in the Linux code, increasing
14474 readability and maintainability.
14476 ----------------------------------------
14478 12 December 2002. Summary of changes for version 20021212.
14481 1) ACPI CA Core Subsystem:
14483 Fixed a problem where the creation of a zero-length AML Buffer
14484 would cause a fault.
14486 Fixed a problem where a Buffer object that pointed to a static AML
14487 buffer (in an ACPI table) could inadvertently be deleted, causing
14490 Fixed a problem where a user buffer (passed in to the external
14491 ACPI CA interfaces) could be overwritten if the buffer was too
14492 small to complete the operation, causing memory corruption.
14494 Fixed a problem in the Buffer-to-String conversion code where a
14495 string of length one was always returned, regardless of the size
14496 of the input Buffer object.
14498 Removed the NATIVE_CHAR data type across the entire source due to
14499 lack of need and lack of consistent use.
14501 Code and Data Size: Current core subsystem library sizes are shown
14502 below. These are the code and data sizes for the acpica.lib
14503 produced by the Microsoft Visual C++ 6.0 compiler, and these
14504 values do not include any ACPI driver or OSPM code. The debug
14505 version of the code includes the debug output trace mechanism and
14506 has a much larger code and data size. Note that these values will
14507 vary depending on the efficiency of the compiler and the compiler
14508 options used during generation.
14511 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14512 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14514 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14515 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14518 ----------------------------------------
14519 05 December 2002. Summary of changes for version 20021205.
14521 1) ACPI CA Core Subsystem:
14523 Fixed a problem where a store to a String or Buffer object could
14524 cause corruption of the DSDT if the object type being stored was
14525 the same as the target object type and the length of the object
14526 being stored was equal to or smaller than the original (existing)
14527 target object. This was seen to cause corruption of battery _BIF
14528 buffers if the _BIF method modified the buffer on the fly.
14530 Fixed a problem where an internal error was generated if a control
14531 method invocation was used in an OperationRegion, Buffer, or
14532 Package declaration. This was caused by the deferred parsing of
14533 the control method and thus the deferred creation of the internal
14534 method object. The solution to this problem was to create the
14535 internal method object at the moment the method is encountered in
14536 the first pass - so that subsequent references to the method will
14537 able to obtain the required parameter count and thus properly
14538 parse the method invocation. This problem presented itself as an
14539 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14541 Fixed a problem where the internal String object copy routine did
14542 not always allocate sufficient memory for the target String object
14543 and caused memory corruption. This problem was seen to cause
14544 "Allocation already present in list!" errors as memory allocation
14547 Implemented a new function for the evaluation of namespace objects
14548 that allows the specification of the allowable return object
14549 types. This simplifies a lot of code that checks for a return
14550 object of one or more specific objects returned from the
14551 evaluation (such as _STA, etc.) This may become and external
14552 function if it would be useful to ACPI-related drivers.
14554 Completed another round of prefixing #defines with "ACPI_" for
14557 Completed additional code restructuring to allow more modular
14558 linking for iASL compiler and AcpiExec. Several files were split
14559 creating new files. New files: nsparse.c dsinit.c evgpe.c
14561 Implemented an abort mechanism to terminate an executing control
14562 method via the AML debugger. This feature is useful for debugging
14563 control methods that depend (wait) for specific hardware
14566 Code and Data Size: Current core subsystem library sizes are shown
14567 below. These are the code and data sizes for the acpica.lib
14568 produced by the Microsoft Visual C++ 6.0 compiler, and these
14569 values do not include any ACPI driver or OSPM code. The debug
14570 version of the code includes the debug output trace mechanism and
14571 has a much larger code and data size. Note that these values will
14572 vary depending on the efficiency of the compiler and the compiler
14573 options used during generation.
14576 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14577 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14579 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14580 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14583 2) iASL Compiler/Disassembler
14585 Fixed a compiler code generation problem for "Interrupt" Resource
14586 Descriptors. If specified in the ASL, the optional "Resource
14587 Source Index" and "Resource Source" fields were not inserted into
14588 the correct location within the AML resource descriptor, creating
14589 an invalid descriptor.
14591 Fixed a disassembler problem for "Interrupt" resource descriptors.
14592 The optional "Resource Source Index" and "Resource Source" fields
14596 ----------------------------------------
14597 22 November 2002. Summary of changes for version 20021122.
14600 1) ACPI CA Core Subsystem:
14602 Fixed a reported problem where an object stored to a Method Local
14603 or Arg was not copied to a new object during the store - the
14604 object pointer was simply copied to the Local/Arg. This caused
14605 all subsequent operations on the Local/Arg to also affect the
14606 original source of the store operation.
14608 Fixed a problem where a store operation to a Method Local or Arg
14609 was not completed properly if the Local/Arg contained a reference
14610 (from RefOf) to a named field. The general-purpose store-to-
14611 namespace-node code is now used so that this case is handled
14614 Fixed a problem where the internal object copy routine would cause
14615 a protection fault if the object being copied was a Package and
14616 contained either 1) a NULL package element or 2) a nested sub-
14619 Fixed a problem with the GPE initialization that resulted from an
14620 ambiguity in the ACPI specification. One section of the
14621 specification states that both the address and length of the GPE
14622 block must be zero if the block is not supported. Another section
14623 implies that only the address need be zero if the block is not
14624 supported. The code has been changed so that both the address and
14625 the length must be non-zero to indicate a valid GPE block (i.e.,
14626 if either the address or the length is zero, the GPE block is
14629 Code and Data Size: Current core subsystem library sizes are shown
14630 below. These are the code and data sizes for the acpica.lib
14631 produced by the Microsoft Visual C++ 6.0 compiler, and these
14632 values do not include any ACPI driver or OSPM code. The debug
14633 version of the code includes the debug output trace mechanism and
14634 has a much larger code and data size. Note that these values will
14635 vary depending on the efficiency of the compiler and the compiler
14636 options used during generation.
14639 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14640 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14642 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14643 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14648 Cleaned up EC driver. Exported an external EC read/write
14649 interface. By going through this, other drivers (most notably
14650 sonypi) will be able to serialize access to the EC.
14653 3) iASL Compiler/Disassembler
14655 Implemented support to optionally generate include files for both
14656 ASM and C (the -i switch). This simplifies BIOS development by
14657 automatically creating include files that contain external
14658 declarations for the symbols that are created within the
14660 (optionally generated) ASM and C AML source files.
14663 ----------------------------------------
14664 15 November 2002. Summary of changes for version 20021115.
14666 1) ACPI CA Core Subsystem:
14668 Fixed a memory leak problem where an error during resolution of
14670 method arguments during a method invocation from another method
14671 failed to cleanup properly by deleting all successfully resolved
14674 Fixed a problem where the target of the Index() operator was not
14675 correctly constructed if the source object was a package. This
14676 problem has not been detected because the use of a target operand
14677 with Index() is very rare.
14679 Fixed a problem with the Index() operator where an attempt was
14680 made to delete the operand objects twice.
14682 Fixed a problem where an attempt was made to delete an operand
14683 twice during execution of the CondRefOf() operator if the target
14686 Implemented the first of perhaps several internal create object
14687 functions that create and initialize a specific object type. This
14688 consolidates duplicated code wherever the object is created, thus
14689 shrinking the size of the subsystem.
14691 Implemented improved debug/error messages for errors that occur
14692 during nested method invocations. All executing method pathnames
14693 are displayed (with the error) as the call stack is unwound - thus
14696 Fixed a problem introduced in the 10/02 release that caused
14697 premature deletion of a buffer object if a buffer was used as an
14698 ASL operand where an integer operand is required (Thus causing an
14699 implicit object conversion from Buffer to Integer.) The change in
14700 the 10/02 release was attempting to fix a memory leak (albeit
14703 Code and Data Size: Current core subsystem library sizes are shown
14704 below. These are the code and data sizes for the acpica.lib
14705 produced by the Microsoft Visual C++ 6.0 compiler, and these
14706 values do not include any ACPI driver or OSPM code. The debug
14707 version of the code includes the debug output trace mechanism and
14708 has a much larger code and data size. Note that these values will
14709 vary depending on the efficiency of the compiler and the compiler
14710 options used during generation.
14713 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14714 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14716 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14717 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14722 Changed the implementation of the ACPI semaphores to use down()
14723 instead of down_interruptable(). It is important that the
14724 execution of ACPI control methods not be interrupted by signals.
14725 Methods must run to completion, or the system may be left in an
14726 unknown/unstable state.
14728 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14732 3) iASL Compiler/Disassembler
14735 Changed the default location of output files. All output files
14736 are now placed in the current directory by default instead of in
14737 the directory of the source file. This change may affect some
14738 existing makefiles, but it brings the behavior of the compiler in
14739 line with other similar tools. The location of the output files
14740 can be overridden with the -p command line switch.
14743 ----------------------------------------
14744 11 November 2002. Summary of changes for version 20021111.
14747 0) ACPI Specification 2.0B is released and is now available at:
14748 http://www.acpi.info/index.html
14751 1) ACPI CA Core Subsystem:
14753 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14754 This includes the early detection and handoff of the request to
14755 the SMBus region handler (avoiding all of the complex field
14756 support code), and support for the bidirectional return packet
14757 from an SMBus write operation. This paves the way for the
14758 development of SMBus drivers in each host operating system.
14760 Fixed a problem where the semaphore WAIT_FOREVER constant was
14761 defined as 32 bits, but must be 16 bits according to the ACPI
14762 specification. This had the side effect of causing ASL
14763 Mutex/Event timeouts even though the ASL code requested a wait
14764 forever. Changed all internal references to the ACPI timeout
14765 parameter to 16 bits to prevent future problems. Changed the name
14766 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14768 Code and Data Size: Current core subsystem library sizes are shown
14769 below. These are the code and data sizes for the acpica.lib
14770 produced by the Microsoft Visual C++ 6.0 compiler, and these
14771 values do not include any ACPI driver or OSPM code. The debug
14772 version of the code includes the debug output trace mechanism and
14773 has a much larger code and data size. Note that these values will
14774 vary depending on the efficiency of the compiler and the compiler
14775 options used during generation.
14778 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14779 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14781 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14782 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14787 Module loading/unloading fixes (John Cagle)
14790 3) iASL Compiler/Disassembler
14792 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14794 Implemented support for the disassembly of all SMBus protocol
14795 keywords (SMBQuick, SMBWord, etc.)
14797 ----------------------------------------
14798 01 November 2002. Summary of changes for version 20021101.
14801 1) ACPI CA Core Subsystem:
14803 Fixed a problem where platforms that have a GPE1 block but no GPE0
14804 block were not handled correctly. This resulted in a "GPE
14805 overlap" error message. GPE0 is no longer required.
14807 Removed code added in the previous release that inserted nodes
14808 into the namespace in alphabetical order. This caused some side-
14809 effects on various machines. The root cause of the problem is
14810 still under investigation since in theory, the internal ordering
14811 of the namespace nodes should not matter.
14814 Enhanced error reporting for the case where a named object is not
14815 found during control method execution. The full ACPI namepath
14816 (name reference) of the object that was not found is displayed in
14819 Note: as a result of the overhaul of the namespace object types in
14820 the previous release, the namespace nodes for the predefined
14821 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14822 instead of ACPI_TYPE_ANY. This simplifies the namespace
14823 management code but may affect code that walks the namespace tree
14824 looking for specific object types.
14826 Code and Data Size: Current core subsystem library sizes are shown
14827 below. These are the code and data sizes for the acpica.lib
14828 produced by the Microsoft Visual C++ 6.0 compiler, and these
14829 values do not include any ACPI driver or OSPM code. The debug
14830 version of the code includes the debug output trace mechanism and
14831 has a much larger code and data size. Note that these values will
14832 vary depending on the efficiency of the compiler and the compiler
14833 options used during generation.
14836 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14837 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14839 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14840 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14845 Fixed a problem introduced in the previous release where the
14846 Processor and Thermal objects were not recognized and installed in
14847 /proc. This was related to the scope type change described above.
14850 3) iASL Compiler/Disassembler
14852 Implemented the -g option to get all of the required ACPI tables
14853 from the registry and save them to files (Windows version of the
14854 compiler only.) The required tables are the FADT, FACS, and DSDT.
14856 Added ACPI table checksum validation during table disassembly in
14857 order to catch corrupted tables.
14860 ----------------------------------------
14861 22 October 2002. Summary of changes for version 20021022.
14863 1) ACPI CA Core Subsystem:
14865 Implemented a restriction on the Scope operator that the target
14866 must already exist in the namespace at the time the operator is
14867 encountered (during table load or method execution). In other
14868 words, forward references are not allowed and Scope() cannot
14869 create a new object. This changes the previous behavior where the
14870 interpreter would create the name if not found. This new behavior
14871 correctly enables the search-to-root algorithm during namespace
14872 lookup of the target name. Because of this upsearch, this fixes
14873 the known Compaq _SB_.OKEC problem and makes both the AML
14874 interpreter and iASL compiler compatible with other ACPI
14877 Completed a major overhaul of the internal ACPI object types for
14878 the ACPI Namespace and the associated operand objects. Many of
14879 these types had become obsolete with the introduction of the two-
14880 pass namespace load. This cleanup simplifies the code and makes
14881 the entire namespace load mechanism much clearer and easier to
14884 Improved debug output for tracking scope opening/closing to help
14885 diagnose scoping issues. The old scope name as well as the new
14886 scope name are displayed. Also improved error messages for
14887 problems with ASL Mutex objects and error messages for GPE
14890 Cleaned up the namespace dump code, removed obsolete code.
14892 All string output (for all namespace/object dumps) now uses the
14893 common ACPI string output procedure which handles escapes properly
14894 and does not emit non-printable characters.
14896 Fixed some issues with constants in the 64-bit version of the
14897 local C library (utclib.c)
14902 EC Driver: No longer attempts to acquire the Global Lock at
14906 3) iASL Compiler/Disassembler
14908 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14909 2 opcodes outside of a control method. This means that the
14910 "executable" operators (versus the "namespace" operators) cannot
14911 be used at the table level; they can only be used within a control
14914 Implemented the restriction on the Scope() operator where the
14915 target must already exist in the namespace at the time the
14916 operator is encountered (during ASL compilation). In other words,
14917 forward references are not allowed and Scope() cannot create a new
14918 object. This makes the iASL compiler compatible with other ACPI
14919 implementations and makes the Scope() implementation adhere to the
14920 ACPI specification.
14922 Fixed a problem where namepath optimization for the Alias operator
14923 was optimizing the wrong path (of the two namepaths.) This caused
14924 a "Missing alias link" error message.
14926 Fixed a problem where an "unknown reserved name" warning could be
14927 incorrectly generated for names like "_SB" when the trailing
14928 underscore is not used in the original ASL.
14930 Fixed a problem where the reserved name check did not handle
14931 NamePaths with multiple NameSegs correctly. The first nameseg of
14932 the NamePath was examined instead of the last NameSeg.
14935 ----------------------------------------
14937 02 October 2002. Summary of changes for this release.
14940 1) ACPI CA Core Subsystem version 20021002:
14942 Fixed a problem where a store/copy of a string to an existing
14943 string did not always set the string length properly in the String
14946 Fixed a reported problem with the ToString operator where the
14947 behavior was identical to the ToHexString operator instead of just
14948 simply converting a raw buffer to a string data type.
14950 Fixed a problem where CopyObject and the other "explicit"
14951 conversion operators were not updating the internal namespace node
14952 type as part of the store operation.
14954 Fixed a memory leak during implicit source operand conversion
14955 where the original object was not deleted if it was converted to a
14956 new object of a different type.
14958 Enhanced error messages for all problems associated with namespace
14959 lookups. Common procedure generates and prints the lookup name as
14960 well as the formatted status.
14962 Completed implementation of a new design for the Alias support
14963 within the namespace. The existing design did not handle the case
14964 where a new object was assigned to one of the two names due to the
14965 use of an explicit conversion operator, resulting in the two names
14966 pointing to two different objects. The new design simply points
14967 the Alias name to the original name node - not to the object.
14968 This results in a level of indirection that must be handled in the
14969 name resolution mechanism.
14971 Code and Data Size: Current core subsystem library sizes are shown
14972 below. These are the code and data sizes for the acpica.lib
14973 produced by the Microsoft Visual C++ 6.0 compiler, and these
14974 values do not include any ACPI driver or OSPM code. The debug
14975 version of the code includes the debug output trace mechanism and
14976 has a larger code and data size. Note that these values will vary
14977 depending on the efficiency of the compiler and the compiler
14978 options used during generation.
14981 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14982 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14984 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14985 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14990 Initialize thermal driver's timer before it is used. (Knut
14993 Allow handling negative celsius values. (Kochi Takayoshi)
14995 Fix thermal management and make trip points. R/W (Pavel Machek)
14997 Fix /proc/acpi/sleep. (P. Christeas)
14999 IA64 fixes. (David Mosberger)
15001 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
15003 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
15007 3) iASL Compiler/Disassembler
15009 Clarified some warning/error messages.
15012 ----------------------------------------
15013 18 September 2002. Summary of changes for this release.
15016 1) ACPI CA Core Subsystem version 20020918:
15018 Fixed a reported problem with reference chaining (via the Index()
15019 and RefOf() operators) in the ObjectType() and SizeOf() operators.
15020 The definition of these operators includes the dereferencing of
15021 all chained references to return information on the base object.
15023 Fixed a problem with stores to indexed package elements - the
15024 existing code would not complete the store if an "implicit
15025 conversion" was not performed. In other words, if the existing
15026 object (package element) was to be replaced completely, the code
15027 didn't handle this case.
15029 Relaxed typechecking on the ASL "Scope" operator to allow the
15030 target name to refer to an object of type Integer, String, or
15031 Buffer, in addition to the scoping object types (Device,
15032 predefined Scopes, Processor, PowerResource, and ThermalZone.)
15033 This allows existing AML code that has workarounds for a bug in
15034 Windows to function properly. A warning is issued, however. This
15035 affects both the AML interpreter and the iASL compiler. Below is
15036 an example of this type of ASL code:
15042 Fixed some reported problems with 64-bit integer support in the
15043 local implementation of C library functions (clib.c)
15048 Use ACPI fix map region instead of IOAPIC region, since it is
15049 undefined in non-SMP.
15051 Ensure that the SCI has the proper polarity and trigger, even on
15052 systems that do not have an interrupt override entry in the MADT.
15054 2.5 big driver reorganization (Pat Mochel)
15056 Use early table mapping code from acpitable.c (Andi Kleen)
15058 New blacklist entries (Andi Kleen)
15060 Blacklist improvements. Split blacklist code out into a separate
15061 file. Move checking the blacklist to very early. Previously, we
15062 would use ACPI tables, and then halfway through init, check the
15063 blacklist -- too late. Now, it's early enough to completely fall-
15067 3) iASL Compiler/Disassembler version 20020918:
15069 Fixed a problem where the typechecking code didn't know that an
15070 alias could point to a method. In other words, aliases were not
15071 being dereferenced during typechecking.
15074 ----------------------------------------
15075 29 August 2002. Summary of changes for this release.
15077 1) ACPI CA Core Subsystem Version 20020829:
15079 If the target of a Scope() operator already exists, it must be an
15080 object type that actually opens a scope -- such as a Device,
15081 Method, Scope, etc. This is a fatal runtime error. Similar error
15082 check has been added to the iASL compiler also.
15084 Tightened up the namespace load to disallow multiple names in the
15085 same scope. This previously was allowed if both objects were of
15086 the same type. (i.e., a lookup was the same as entering a new
15092 Ensure that the ACPI interrupt has the proper trigger and
15095 local_irq_disable is extraneous. (Matthew Wilcox)
15097 Make "acpi=off" actually do what it says, and not use the ACPI
15098 interpreter *or* the tables.
15100 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
15104 3) iASL Compiler/Disassembler Version 20020829:
15106 Implemented namepath optimization for name declarations. For
15107 example, a declaration like "Method (\_SB_.ABCD)" would get
15108 optimized to "Method (ABCD)" if the declaration is within the
15109 \_SB_ scope. This optimization is in addition to the named
15110 reference path optimization first released in the previous
15111 version. This would seem to complete all possible optimizations
15112 for namepaths within the ASL/AML.
15114 If the target of a Scope() operator already exists, it must be an
15115 object type that actually opens a scope -- such as a Device,
15116 Method, Scope, etc.
15118 Implemented a check and warning for unreachable code in the same
15119 block below a Return() statement.
15121 Fixed a problem where the listing file was not generated if the
15122 compiler aborted if the maximum error count was exceeded (200).
15124 Fixed a problem where the typechecking of method return values was
15125 broken. This includes the check for a return value when the
15126 method is invoked as a TermArg (a return value is expected.)
15128 Fixed a reported problem where EOF conditions during a quoted
15129 string or comment caused a fault.
15132 ----------------------------------------
15133 15 August 2002. Summary of changes for this release.
15135 1) ACPI CA Core Subsystem Version 20020815:
15137 Fixed a reported problem where a Store to a method argument that
15138 contains a reference did not perform the indirect store correctly.
15139 This problem was created during the conversion to the new
15140 reference object model - the indirect store to a method argument
15141 code was not updated to reflect the new model.
15143 Reworked the ACPI mode change code to better conform to ACPI 2.0,
15144 handle corner cases, and improve code legibility (Kochi Takayoshi)
15146 Fixed a problem with the pathname parsing for the carat (^)
15147 prefix. The heavy use of the carat operator by the new namepath
15148 optimization in the iASL compiler uncovered a problem with the AML
15149 interpreter handling of this prefix. In the case where one or
15150 more carats precede a single nameseg, the nameseg was treated as
15151 standalone and the search rule (to root) was inadvertently
15152 applied. This could cause both the iASL compiler and the
15153 interpreter to find the wrong object or to miss the error that
15154 should occur if the object does not exist at that exact pathname.
15156 Found and fixed the problem where the HP Pavilion DSDT would not
15157 load. This was a relatively minor tweak to the table loading code
15158 (a problem caused by the unexpected encounter with a method
15159 invocation not within a control method), but it does not solve the
15160 overall issue of the execution of AML code at the table level.
15161 This investigation is still ongoing.
15163 Code and Data Size: Current core subsystem library sizes are shown
15164 below. These are the code and data sizes for the acpica.lib
15165 produced by the Microsoft Visual C++ 6.0 compiler, and these
15166 values do not include any ACPI driver or OSPM code. The debug
15167 version of the code includes the debug output trace mechanism and
15168 has a larger code and data size. Note that these values will vary
15169 depending on the efficiency of the compiler and the compiler
15170 options used during generation.
15173 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15174 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15176 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15177 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15182 Remove redundant slab.h include (Brad Hards)
15184 Fix several bugs in thermal.c (Herbert Nachtnebel)
15186 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
15188 Change acpi_system_suspend to use updated irq functions (Pavel
15191 Export acpi_get_firmware_table (Matthew Wilcox)
15193 Use proper root proc entry for ACPI (Kochi Takayoshi)
15195 Fix early-boot table parsing (Bjorn Helgaas)
15198 3) iASL Compiler/Disassembler
15200 Reworked the compiler options to make them more consistent and to
15201 use two-letter options where appropriate. We were running out of
15202 sensible letters. This may break some makefiles, so check the
15203 current options list by invoking the compiler with no parameters.
15205 Completed the design and implementation of the ASL namepath
15206 optimization option for the compiler. This option optimizes all
15207 references to named objects to the shortest possible path. The
15208 first attempt tries to utilize a single nameseg (4 characters) and
15209 the "search-to-root" algorithm used by the interpreter. If that
15210 cannot be used (because either the name is not in the search path
15211 or there is a conflict with another object with the same name),
15212 the pathname is optimized using the carat prefix (usually a
15213 shorter string than specifying the entire path from the root.)
15215 Implemented support to obtain the DSDT from the Windows registry
15216 (when the disassembly option is specified with no input file).
15217 Added this code as the implementation for AcpiOsTableOverride in
15218 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
15219 utility) to scan memory for the DSDT to the AcpiOsTableOverride
15220 function in the DOS OSL to make the disassembler truly OS
15223 Implemented a new option to disassemble and compile in one step.
15224 When used without an input filename, this option will grab the
15225 DSDT from the local machine, disassemble it, and compile it in one
15228 Added a warning message for invalid escapes (a backslash followed
15229 by any character other than the allowable escapes). This catches
15230 the quoted string error "\_SB_" (which should be "\\_SB_" ).
15232 Also, there are numerous instances in the ACPI specification where
15235 Added a compiler option to disable all optimizations. This is
15236 basically the "compatibility mode" because by using this option,
15237 the AML code will come out exactly the same as other ASL
15240 Added error messages for incorrectly ordered dependent resource
15241 functions. This includes: missing EndDependentFn macro at end of
15242 dependent resource list, nested dependent function macros (both
15243 start and end), and missing StartDependentFn macro. These are
15244 common errors that should be caught at compile time.
15246 Implemented _OSI support for the disassembler and compiler. _OSI
15247 must be included in the namespace for proper disassembly (because
15248 the disassembler must know the number of arguments.)
15250 Added an "optimization" message type that is optional (off by
15251 default). This message is used for all optimizations - including
15252 constant folding, integer optimization, and namepath optimization.
15254 ----------------------------------------
15255 25 July 2002. Summary of changes for this release.
15258 1) ACPI CA Core Subsystem Version 20020725:
15260 The AML Disassembler has been enhanced to produce compilable ASL
15261 code and has been integrated into the iASL compiler (see below) as
15262 well as the single-step disassembly for the AML debugger and the
15263 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
15264 resource templates and macros are fully supported. The
15265 disassembler has been tested on over 30 different AML files,
15266 producing identical AML when the resulting disassembled ASL file
15267 is recompiled with the same ASL compiler.
15269 Modified the Resource Manager to allow zero interrupts and zero
15270 dma channels during the GetCurrentResources call. This was
15271 causing problems on some platforms.
15273 Added the AcpiOsRedirectOutput interface to the OSL to simplify
15274 output redirection for the AcpiOsPrintf and AcpiOsVprintf
15277 Code and Data Size: Current core subsystem library sizes are shown
15278 below. These are the code and data sizes for the acpica.lib
15279 produced by the Microsoft Visual C++ 6.0 compiler, and these
15280 values do not include any ACPI driver or OSPM code. The debug
15281 version of the code includes the debug output trace mechanism and
15282 has a larger code and data size. Note that these values will vary
15283 depending on the efficiency of the compiler and the compiler
15284 options used during generation.
15287 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15288 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15290 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15291 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15296 Fixed a panic in the EC driver (Dominik Brodowski)
15298 Implemented checksum of the R/XSDT itself during Linux table scan
15304 The AML disassembler is integrated into the compiler. The "-d"
15305 option invokes the disassembler to completely disassemble an
15306 input AML file, producing as output a text ASL file with the
15307 extension ".dsl" (to avoid name collisions with existing .asl
15308 source files.) A future enhancement will allow the disassembler
15309 to obtain the BIOS DSDT from the registry under Windows.
15311 Fixed a problem with the VendorShort and VendorLong resource
15312 descriptors where an invalid AML sequence was created.
15314 Implemented a fix for BufferData term in the ASL parser. It was
15315 inadvertently defined twice, allowing invalid syntax to pass and
15316 causing reduction conflicts.
15318 Fixed a problem where the Ones opcode could get converted to a
15319 value of zero if "Ones" was used where a byte, word or dword value
15320 was expected. The 64-bit value is now truncated to the correct
15321 size with the correct value.
15325 ----------------------------------------
15326 02 July 2002. Summary of changes for this release.
15329 1) ACPI CA Core Subsystem Version 20020702:
15331 The Table Manager code has been restructured to add several new
15332 features. Tables that are not required by the core subsystem
15333 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
15334 validated in any way and are returned from AcpiGetFirmwareTable if
15335 requested. The AcpiOsTableOverride interface is now called for
15336 each table that is loaded by the subsystem in order to allow the
15337 host to override any table it chooses. Previously, only the DSDT
15338 could be overridden. Added one new files, tbrsdt.c and
15341 Fixed a problem with the conversion of internal package objects to
15342 external objects (when a package is returned from a control
15343 method.) The return buffer length was set to zero instead of the
15344 proper length of the package object.
15346 Fixed a reported problem with the use of the RefOf and DeRefOf
15347 operators when passing reference arguments to control methods. A
15348 new type of Reference object is used internally for references
15349 produced by the RefOf operator.
15351 Added additional error messages in the Resource Manager to explain
15352 AE_BAD_DATA errors when they occur during resource parsing.
15354 Split the AcpiEnableSubsystem into two primitives to enable a
15355 finer granularity initialization sequence. These two calls should
15356 be called in this order: AcpiEnableSubsystem (flags),
15357 AcpiInitializeObjects (flags). The flags parameter remains the
15363 Updated the ACPI utilities module to understand the new style of
15364 fully resolved package objects that are now returned from the core
15365 subsystem. This eliminates errors of the form:
15367 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
15368 acpi_utils-0430 [145] acpi_evaluate_reference:
15369 Invalid element in package (not a device reference)
15371 The method evaluation utility uses the new buffer allocation
15372 scheme instead of calling AcpiEvaluate Object twice.
15374 Added support for ECDT. This allows the use of the Embedded
15376 Controller before the namespace has been fully initialized, which
15377 is necessary for ACPI 2.0 support, and for some laptops to
15378 initialize properly. (Laptops using ECDT are still rare, so only
15379 limited testing was performed of the added functionality.)
15381 Fixed memory leaks in the EC driver.
15383 Eliminated a brittle code structure in acpi_bus_init().
15385 Eliminated the acpi_evaluate() helper function in utils.c. It is
15386 no longer needed since acpi_evaluate_object can optionally
15387 allocate memory for the return object.
15389 Implemented fix for keyboard hang when getting battery readings on
15390 some systems (Stephen White)
15392 PCI IRQ routing update (Dominik Brodowski)
15394 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15397 ----------------------------------------
15398 11 June 2002. Summary of changes for this release.
15401 1) ACPI CA Core Subsystem Version 20020611:
15403 Fixed a reported problem where constants such as Zero and One
15404 appearing within _PRT packages were not handled correctly within
15405 the resource manager code. Originally reported against the ASL
15406 compiler because the code generator now optimizes integers to
15407 their minimal AML representation (i.e. AML constants if possible.)
15408 The _PRT code now handles all AML constant opcodes correctly
15409 (Zero, One, Ones, Revision).
15411 Fixed a problem with the Concatenate operator in the AML
15412 interpreter where a buffer result object was incorrectly marked as
15413 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15415 All package sub-objects are now fully resolved before they are
15416 returned from the external ACPI interfaces. This means that name
15417 strings are resolved to object handles, and constant operators
15418 (Zero, One, Ones, Revision) are resolved to Integers.
15420 Implemented immediate resolution of the AML Constant opcodes
15421 (Zero, One, Ones, Revision) to Integer objects upon detection
15422 within the AML stream. This has simplified and reduced the
15423 generated code size of the subsystem by eliminating about 10
15424 switch statements for these constants (which previously were
15425 contained in Reference objects.) The complicating issues are that
15426 the Zero opcode is used as a "placeholder" for unspecified
15427 optional target operands and stores to constants are defined to be
15430 Code and Data Size: Current core subsystem library sizes are shown
15431 below. These are the code and data sizes for the acpica.lib
15432 produced by the Microsoft Visual C++ 6.0 compiler, and these
15433 values do not include any ACPI driver or OSPM code. The debug
15434 version of the code includes the debug output trace mechanism and
15435 has a larger code and data size. Note that these values will vary
15436 depending on the efficiency of the compiler and the compiler
15437 options used during generation.
15440 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15441 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15443 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15444 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15450 Added preliminary support for obtaining _TRA data for PCI root
15451 bridges (Bjorn Helgaas).
15454 3) iASL Compiler Version X2046:
15456 Fixed a problem where the "_DDN" reserved name was defined to be a
15457 control method with one argument. There are no arguments, and
15458 _DDN does not have to be a control method.
15460 Fixed a problem with the Linux version of the compiler where the
15461 source lines printed with error messages were the wrong lines.
15462 This turned out to be the "LF versus CR/LF" difference between
15463 Windows and Unix. This appears to be the longstanding issue
15464 concerning listing output and error messages.
15466 Fixed a problem with the Linux version of compiler where opcode
15467 names within error messages were wrong. This was caused by a
15468 slight difference in the output of the Flex tool on Linux versus
15471 Fixed a problem with the Linux compiler where the hex output files
15472 contained some garbage data caused by an internal buffer overrun.
15475 ----------------------------------------
15476 17 May 2002. Summary of changes for this release.
15479 1) ACPI CA Core Subsystem Version 20020517:
15481 Implemented a workaround to an BIOS bug discovered on the HP
15482 OmniBook where the FADT revision number and the table size are
15483 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15484 behavior is to fallback to using only the ACPI 1.0 fields of the
15485 FADT if the table is too small to be a ACPI 2.0 table as claimed
15486 by the revision number. Although this is a BIOS bug, this is a
15487 case where the workaround is simple enough and with no side
15488 effects, so it seemed prudent to add it. A warning message is
15491 Implemented minimum size checks for the fixed-length ACPI tables -
15492 - the FADT and FACS, as well as consistency checks between the
15493 revision number and the table size.
15495 Fixed a reported problem in the table override support where the
15496 new table pointer was incorrectly treated as a physical address
15497 instead of a logical address.
15499 Eliminated the use of the AE_AML_ERROR exception and replaced it
15500 with more descriptive codes.
15502 Fixed a problem where an exception would occur if an ASL Field was
15503 defined with no named Field Units underneath it (used by some
15506 Code and Data Size: Current core subsystem library sizes are shown
15507 below. These are the code and data sizes for the acpica.lib
15508 produced by the Microsoft Visual C++ 6.0 compiler, and these
15509 values do not include any ACPI driver or OSPM code. The debug
15510 version of the code includes the debug output trace mechanism and
15511 has a larger code and data size. Note that these values will vary
15512 depending on the efficiency of the compiler and the compiler
15513 options used during generation.
15516 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15517 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15519 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15520 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15526 Much work done on ACPI init (MADT and PCI IRQ routing support).
15527 (Paul D. and Dominik Brodowski)
15529 Fix PCI IRQ-related panic on boot (Sam Revitch)
15531 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15533 Fix "MHz" typo (Dominik Brodowski)
15535 Fix RTC year 2000 issue (Dominik Brodowski)
15537 Preclude multiple button proc entries (Eric Brunet)
15539 Moved arch-specific code out of include/platform/aclinux.h
15541 3) iASL Compiler Version X2044:
15543 Implemented error checking for the string used in the EISAID macro
15544 (Usually used in the definition of the _HID object.) The code now
15545 strictly enforces the PnP format - exactly 7 characters, 3
15546 uppercase letters and 4 hex digits.
15548 If a raw string is used in the definition of the _HID object
15549 (instead of the EISAID macro), the string must contain all
15550 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15553 Implemented checking for invalid use of ACPI reserved names for
15554 most of the name creation operators (Name, Device, Event, Mutex,
15555 OperationRegion, PowerResource, Processor, and ThermalZone.)
15556 Previously, this check was only performed for control methods.
15558 Implemented an additional check on the Name operator to emit an
15559 error if a reserved name that must be implemented in ASL as a
15560 control method is used. We know that a reserved name must be a
15561 method if it is defined with input arguments.
15563 The warning emitted when a namespace object reference is not found
15564 during the cross reference phase has been changed into an error.
15565 The "External" directive should be used for names defined in other
15569 4) Tools and Utilities
15571 The 16-bit tools (adump16 and aexec16) have been regenerated and
15574 Fixed a problem with the output of both acpidump and adump16 where
15575 the indentation of closing parentheses and brackets was not
15577 aligned properly with the parent block.
15580 ----------------------------------------
15581 03 May 2002. Summary of changes for this release.
15584 1) ACPI CA Core Subsystem Version 20020503:
15586 Added support a new OSL interface that allows the host operating
15588 system software to override the DSDT found in the firmware -
15589 AcpiOsTableOverride. With this interface, the OSL can examine the
15590 version of the firmware DSDT and replace it with a different one
15593 Added new external interfaces for accessing ACPI registers from
15594 device drivers and other system software - AcpiGetRegister and
15595 AcpiSetRegister. This was simply an externalization of the
15596 existing AcpiHwBitRegister interfaces.
15598 Fixed a regression introduced in the previous build where the
15599 ASL/AML CreateField operator always returned an error,
15600 "destination must be a NS Node".
15602 Extended the maximum time (before failure) to successfully enable
15603 ACPI mode to 3 seconds.
15605 Code and Data Size: Current core subsystem library sizes are shown
15606 below. These are the code and data sizes for the acpica.lib
15607 produced by the Microsoft Visual C++ 6.0 compiler, and these
15608 values do not include any ACPI driver or OSPM code. The debug
15609 version of the code includes the debug output trace mechanism and
15610 has a larger code and data size. Note that these values will vary
15611 depending on the efficiency of the compiler and the compiler
15612 options used during generation.
15615 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15616 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15618 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15619 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15624 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15625 free. While 3 out of 4 of our in-house systems work fine, the last
15626 one still hangs when testing the LAPIC timer.
15628 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15631 Added warning on boot for Presario 711FR.
15633 Sleep improvements (Pavel Machek)
15635 ACPI can now be built without CONFIG_PCI enabled.
15637 IA64: Fixed memory map functions (JI Lee)
15640 3) iASL Compiler Version X2043:
15642 Added support to allow the compiler to be integrated into the MS
15643 VC++ development environment for one-button compilation of single
15644 files or entire projects -- with error-to-source-line mapping.
15646 Implemented support for compile-time constant folding for the
15647 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15648 specification. This allows the ASL writer to use expressions
15649 instead of Integer/Buffer/String constants in terms that must
15650 evaluate to constants at compile time and will also simplify the
15651 emitted AML in any such sub-expressions that can be folded
15652 (evaluated at compile-time.) This increases the size of the
15653 compiler significantly because a portion of the ACPI CA AML
15654 interpreter is included within the compiler in order to pre-
15655 evaluate constant expressions.
15658 Fixed a problem with the "Unicode" ASL macro that caused the
15659 compiler to fault. (This macro is used in conjunction with the
15660 _STR reserved name.)
15662 Implemented an AML opcode optimization to use the Zero, One, and
15663 Ones opcodes where possible to further reduce the size of integer
15664 constants and thus reduce the overall size of the generated AML
15667 Implemented error checking for new reserved terms for ACPI version
15670 Implemented the -qr option to display the current list of ACPI
15671 reserved names known to the compiler.
15673 Implemented the -qc option to display the current list of ASL
15674 operators that are allowed within constant expressions and can
15675 therefore be folded at compile time if the operands are constants.
15680 Updated the Programmer's Reference for new interfaces, data types,
15681 and memory allocation model options.
15683 Updated the iASL Compiler User Reference to apply new format and
15684 add information about new features and options.
15686 ----------------------------------------
15687 19 April 2002. Summary of changes for this release.
15689 1) ACPI CA Core Subsystem Version 20020419:
15691 The source code base for the Core Subsystem has been completely
15692 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15693 versions. The Lint option files used are included in the
15694 /acpi/generate/lint directory.
15696 Implemented enhanced status/error checking across the entire
15697 Hardware manager subsystem. Any hardware errors (reported from
15698 the OSL) are now bubbled up and will abort a running control
15702 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15703 was stored only with control method nodes, causing a fault when
15704 non-control method code was executed during table loading. The
15705 solution implemented uses a global variable to indicate table
15706 width across the entire ACPI subsystem. Therefore, ACPI CA does
15707 not support mixed integer widths across different ACPI tables
15710 Fixed a problem where NULL extended fields (X fields) in an ACPI
15711 2.0 ACPI FADT caused the table load to fail. Although the
15712 existing ACPI specification is a bit fuzzy on this topic, the new
15713 behavior is to fall back on a ACPI 1.0 field if the corresponding
15714 ACPI 2.0 X field is zero (even though the table revision indicates
15715 a full ACPI 2.0 table.) The ACPI specification will be updated to
15716 clarify this issue.
15718 Fixed a problem with the SystemMemory operation region handler
15719 where memory was always accessed byte-wise even if the AML-
15720 specified access width was larger than a byte. This caused
15721 problems on systems with memory-mapped I/O. Memory is now
15722 accessed with the width specified. On systems that do not support
15723 non-aligned transfers, a check is made to guarantee proper address
15724 alignment before proceeding in order to avoid an AML-caused
15725 alignment fault within the kernel.
15728 Fixed a problem with the ExtendedIrq resource where only one byte
15729 of the 4-byte Irq field was extracted.
15731 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15732 function was out of date and required a rewrite.
15734 Code and Data Size: Current core subsystem library sizes are shown
15735 below. These are the code and data sizes for the acpica.lib
15736 produced by the Microsoft Visual C++ 6.0 compiler, and these
15737 values do not include any ACPI driver or OSPM code. The debug
15738 version of the code includes the debug output trace mechanism and
15739 has a larger code and data size. Note that these values will vary
15740 depending on the efficiency of the compiler and the compiler
15741 options used during generation.
15744 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15745 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15747 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15748 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15753 PCI IRQ routing fixes (Dominik Brodowski)
15756 3) iASL Compiler Version X2042:
15758 Implemented an additional compile-time error check for a field
15759 unit whose size + minimum access width would cause a run-time
15760 access beyond the end-of-region. Previously, only the field size
15761 itself was checked.
15763 The Core subsystem and iASL compiler now share a common parse
15764 object in preparation for compile-time evaluation of the type
15765 3/4/5 ASL operators.
15768 ----------------------------------------
15769 Summary of changes for this release: 03_29_02
15771 1) ACPI CA Core Subsystem Version 20020329:
15773 Implemented support for late evaluation of TermArg operands to
15774 Buffer and Package objects. This allows complex expressions to be
15775 used in the declarations of these object types.
15777 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15778 1.0, if the field was larger than 32 bits, it was returned as a
15779 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15780 the field is returned as a buffer only if the field is larger than
15781 64 bits. The TableRevision is now considered when making this
15782 conversion to avoid incompatibility with existing ASL code.
15784 Implemented logical addressing for AcpiOsGetRootPointer. This
15785 allows an RSDP with either a logical or physical address. With
15786 this support, the host OS can now override all ACPI tables with
15787 one logical RSDP. Includes implementation of "typed" pointer
15788 support to allow a common data type for both physical and logical
15789 pointers internally. This required a change to the
15790 AcpiOsGetRootPointer interface.
15792 Implemented the use of ACPI 2.0 Generic Address Structures for all
15793 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15794 mapped I/O for these ACPI features.
15796 Initialization now ignores not only non-required tables (All
15797 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15798 not validate the table headers of unrecognized tables.
15800 Fixed a problem where a notify handler could only be
15801 installed/removed on an object of type Device. All "notify"
15803 objects are now supported -- Devices, Processor, Power, and
15806 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15807 critical information is returned when this debug level is enabled.
15809 Code and Data Size: Current core subsystem library sizes are shown
15810 below. These are the code and data sizes for the acpica.lib
15811 produced by the Microsoft Visual C++ 6.0 compiler, and these
15812 values do not include any ACPI driver or OSPM code. The debug
15813 version of the code includes the debug output trace mechanism and
15814 has a larger code and data size. Note that these values will vary
15815 depending on the efficiency of the compiler and the compiler
15816 options used during generation.
15819 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15820 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15822 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15823 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15828 The processor driver (acpi_processor.c) now fully supports ACPI
15829 2.0-based processor performance control (e.g. Intel(R)
15830 SpeedStep(TM) technology) Note that older laptops that only have
15831 the Intel "applet" interface are not supported through this. The
15832 'limit' and 'performance' interface (/proc) are fully functional.
15833 [Note that basic policy for controlling performance state
15834 transitions will be included in the next version of ospmd.] The
15835 idle handler was modified to more aggressively use C2, and PIIX4
15836 errata handling underwent a complete overhaul (big thanks to
15837 Dominik Brodowski).
15839 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15840 based devices in the ACPI namespace are now dynamically bound
15841 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15842 This allows, among other things, ACPI to resolve bus numbers for
15843 subordinate PCI bridges.
15845 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15846 entries defined underneath PCI bridges.
15848 Added IBM 600E to bad bios list due to invalid _ADR value for
15849 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15851 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15852 (acpi.c, mpparse.c) -- stay tuned.
15854 Added back visual differentiation between fixed-feature and
15855 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15856 button/power/PWRF) to simplify button identification.
15858 We no longer use -Wno-unused when compiling debug. Please ignore
15859 any "_THIS_MODULE defined but not used" messages.
15861 Can now shut down the system using "magic sysrq" key.
15864 3) iASL Compiler version 2041:
15866 Fixed a problem where conversion errors for hex/octal/decimal
15867 constants were not reported.
15869 Implemented a fix for the General Register template Address field.
15870 This field was 8 bits when it should be 64.
15872 Fixed a problem where errors/warnings were no longer being emitted
15873 within the listing output file.
15875 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15876 exactly 4 characters, alphanumeric only.
15881 ----------------------------------------
15882 Summary of changes for this release: 03_08_02
15885 1) ACPI CA Core Subsystem Version 20020308:
15887 Fixed a problem with AML Fields where the use of the "AccessAny"
15888 keyword could cause an interpreter error due to attempting to read
15889 or write beyond the end of the parent Operation Region.
15891 Fixed a problem in the SystemMemory Operation Region handler where
15892 an attempt was made to map memory beyond the end of the region.
15893 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15894 errors on some Linux systems.
15896 Fixed a problem where the interpreter/namespace "search to root"
15897 algorithm was not functioning for some object types. Relaxed the
15898 internal restriction on the search to allow upsearches for all
15899 external object types as well as most internal types.
15904 We now use safe_halt() macro versus individual calls to sti | hlt.
15906 Writing to the processor limit interface should now work. "echo 1"
15907 will increase the limit, 2 will decrease, and 0 will reset to the
15914 Fixed segfault on Linux version.
15917 ----------------------------------------
15918 Summary of changes for this release: 02_25_02
15920 1) ACPI CA Core Subsystem:
15923 Fixed a problem where the GPE bit masks were not initialized
15924 properly, causing erratic GPE behavior.
15926 Implemented limited support for multiple calling conventions. The
15927 code can be generated with either the VPL (variable parameter
15928 list, or "C") convention, or the FPL (fixed parameter list, or
15929 "Pascal") convention. The core subsystem is about 3.4% smaller
15930 when generated with FPL.
15935 Re-add some /proc/acpi/event functionality that was lost during
15938 Resolved issue with /proc events for fixed-feature buttons showing
15939 up as the system device.
15941 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15943 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15945 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15947 Fixed limit interface & usage to fix bugs with passive cooling
15950 Restructured PRT support.
15953 ----------------------------------------
15954 Summary of changes for this label: 02_14_02
15957 1) ACPI CA Core Subsystem:
15959 Implemented support in AcpiLoadTable to allow loading of FACS and
15962 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15963 been removed. All 64-bit platforms should be migrated to the ACPI
15964 2.0 tables. The actbl71.h header has been removed from the source
15967 All C macros defined within the subsystem have been prefixed with
15968 "ACPI_" to avoid collision with other system include files.
15970 Removed the return value for the two AcpiOsPrint interfaces, since
15971 it is never used and causes lint warnings for ignoring the return
15974 Added error checking to all internal mutex acquire and release
15975 calls. Although a failure from one of these interfaces is
15976 probably a fatal system error, these checks will cause the
15977 immediate abort of the currently executing method or interface.
15979 Fixed a problem where the AcpiSetCurrentResources interface could
15980 fault. This was a side effect of the deployment of the new memory
15983 Fixed a couple of problems with the Global Lock support introduced
15984 in the last major build. The "common" (1.0/2.0) internal FACS was
15985 being overwritten with the FACS signature and clobbering the
15986 Global Lock pointer. Also, the actual firmware FACS was being
15987 unmapped after construction of the "common" FACS, preventing
15988 access to the actual Global Lock field within it. The "common"
15989 internal FACS is no longer installed as an actual ACPI table; it
15990 is used simply as a global.
15992 Code and Data Size: Current core subsystem library sizes are shown
15993 below. These are the code and data sizes for the acpica.lib
15994 produced by the Microsoft Visual C++ 6.0 compiler, and these
15995 values do not include any ACPI driver or OSPM code. The debug
15996 version of the code includes the debug output trace mechanism and
15997 has a larger code and data size. Note that these values will vary
15998 depending on the efficiency of the compiler and the compiler
15999 options used during generation.
16001 Previous Release (02_07_01)
16002 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16003 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16005 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
16006 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
16011 Updated Linux-specific code for core macro and OSL interface
16012 changes described above.
16014 Improved /proc/acpi/event. It now can be opened only once and has
16015 proper poll functionality.
16017 Fixed and restructured power management (acpi_bus).
16019 Only create /proc "view by type" when devices of that class exist.
16021 Fixed "charging/discharging" bug (and others) in acpi_battery.
16023 Improved thermal zone code.
16026 3) ASL Compiler, version X2039:
16029 Implemented the new compiler restriction on ASL String hex/octal
16030 escapes to non-null, ASCII values. An error results if an invalid
16031 value is used. (This will require an ACPI 2.0 specification
16034 AML object labels that are output to the optional C and ASM source
16035 are now prefixed with both the ACPI table signature and table ID
16036 to help guarantee uniqueness within a large BIOS project.
16039 ----------------------------------------
16040 Summary of changes for this label: 02_01_02
16042 1) ACPI CA Core Subsystem:
16044 ACPI 2.0 support is complete in the entire Core Subsystem and the
16045 ASL compiler. All new ACPI 2.0 operators are implemented and all
16046 other changes for ACPI 2.0 support are complete. With
16047 simultaneous code and data optimizations throughout the subsystem,
16048 ACPI 2.0 support has been implemented with almost no additional
16049 cost in terms of code and data size.
16051 Implemented a new mechanism for allocation of return buffers. If
16052 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
16053 be allocated on behalf of the caller. Consolidated all return
16054 buffer validation and allocation to a common procedure. Return
16055 buffers will be allocated via the primary OSL allocation interface
16056 since it appears that a separate pool is not needed by most users.
16057 If a separate pool is required for these buffers, the caller can
16058 still use the original mechanism and pre-allocate the buffer(s).
16060 Implemented support for string operands within the DerefOf
16063 Restructured the Hardware and Event managers to be table driven,
16064 simplifying the source code and reducing the amount of generated
16067 Split the common read/write low-level ACPI register bitfield
16068 procedure into a separate read and write, simplifying the code
16071 Obsoleted the AcpiOsCallocate OSL interface. This interface was
16072 used only a handful of times and didn't have enough critical mass
16073 for a separate interface. Replaced with a common calloc procedure
16076 Fixed a reported problem with the GPE number mapping mechanism
16077 that allows GPE1 numbers to be non-contiguous with GPE0.
16078 Reorganized the GPE information and shrunk a large array that was
16079 originally large enough to hold info for all possible GPEs (256)
16080 to simply large enough to hold all GPEs up to the largest GPE
16081 number on the machine.
16083 Fixed a reported problem with resource structure alignment on 64-
16086 Changed the AcpiEnableEvent and AcpiDisableEvent external
16087 interfaces to not require any flags for the common case of
16088 enabling/disabling a GPE.
16090 Implemented support to allow a "Notify" on a Processor object.
16092 Most TBDs in comments within the source code have been resolved
16096 Fixed a problem in the interpreter where a standalone parent
16097 prefix (^) was not handled correctly in the interpreter and
16100 Removed obsolete and unnecessary GPE save/restore code.
16102 Implemented Field support in the ASL Load operator. This allows a
16103 table to be loaded from a named field, in addition to loading a
16104 table directly from an Operation Region.
16106 Implemented timeout and handle support in the external Global Lock
16109 Fixed a problem in the AcpiDump utility where pathnames were no
16110 longer being generated correctly during the dump of named objects.
16112 Modified the AML debugger to give a full display of if/while
16113 predicates instead of just one AML opcode at a time. (The
16114 predicate can have several nested ASL statements.) The old method
16115 was confusing during single stepping.
16117 Code and Data Size: Current core subsystem library sizes are shown
16118 below. These are the code and data sizes for the acpica.lib
16119 produced by the Microsoft Visual C++ 6.0 compiler, and these
16120 values do not include any ACPI driver or OSPM code. The debug
16121 version of the code includes the debug output trace mechanism and
16122 has a larger code and data size. Note that these values will vary
16123 depending on the efficiency of the compiler and the compiler
16124 options used during generation.
16126 Previous Release (12_18_01)
16127 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16128 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16130 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16131 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16135 Implemented fix for PIIX reverse throttling errata (Processor
16138 Added new Limit interface (Processor and Thermal drivers)
16140 New thermal policy (Thermal driver)
16142 Many updates to /proc
16144 Battery "low" event support (Battery driver)
16146 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
16148 IA32 - IA64 initialization unification, no longer experimental
16150 Menuconfig options redesigned
16152 3) ASL Compiler, version X2037:
16154 Implemented several new output features to simplify integration of
16155 AML code into firmware: 1) Output the AML in C source code with
16156 labels for each named ASL object. The original ASL source code
16157 is interleaved as C comments. 2) Output the AML in ASM source code
16158 with labels and interleaved ASL source. 3) Output the AML in
16159 raw hex table form, in either C or ASM.
16161 Implemented support for optional string parameters to the
16162 LoadTable operator.
16164 Completed support for embedded escape sequences within string
16165 literals. The compiler now supports all single character escapes
16166 as well as the Octal and Hex escapes. Note: the insertion of a
16167 null byte into a string literal (via the hex/octal escape) causes
16168 the string to be immediately terminated. A warning is issued.
16170 Fixed a problem where incorrect AML was generated for the case
16171 where an ASL namepath consists of a single parent prefix (
16173 ) with no trailing name segments.
16175 The compiler has been successfully generated with a 64-bit C
16181 ----------------------------------------
16182 Summary of changes for this label: 12_18_01
16186 Enhanced blacklist with reason and severity fields. Any table's
16187 signature may now be used to identify a blacklisted system.
16189 Call _PIC control method to inform the firmware which interrupt
16190 model the OS is using. Turn on any disabled link devices.
16192 Cleaned up busmgr /proc error handling (Andreas Dilger)
16194 2) ACPI CA Core Subsystem:
16196 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
16199 Completed implementation of the ACPI 2.0 "Continue",
16200 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
16201 operators. All new ACPI 2.0 operators are now implemented in both
16202 the ASL compiler and the AML interpreter. The only remaining ACPI
16203 2.0 task is support for the String data type in the DerefOf
16204 operator. Fixed a problem with AcquireMutex where the status code
16205 was lost if the caller had to actually wait for the mutex.
16207 Increased the maximum ASL Field size from 64K bits to 4G bits.
16209 Completed implementation of the external Global Lock interfaces --
16210 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
16211 Handler parameters were added.
16213 Completed another pass at removing warnings and issues when
16214 compiling with 64-bit compilers. The code now compiles cleanly
16215 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
16216 add and subtract (diff) macros have changed considerably.
16219 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
16220 64-bit platforms, 32-bits on all others. This type is used
16221 wherever memory allocation and/or the C sizeof() operator is used,
16222 and affects the OSL memory allocation interfaces AcpiOsAllocate
16223 and AcpiOsCallocate.
16225 Implemented sticky user breakpoints in the AML debugger.
16227 Code and Data Size: Current core subsystem library sizes are shown
16228 below. These are the code and data sizes for the acpica.lib
16229 produced by the Microsoft Visual C++ 6.0 compiler, and these
16230 values do not include any ACPI driver or OSPM code. The debug
16231 version of the code includes the debug output trace mechanism and
16232 has a larger code and data size. Note that these values will vary
16233 depending on the efficiency of the compiler and the compiler
16234 options used during generation.
16236 Previous Release (12_05_01)
16237 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16238 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16240 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16241 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16243 3) ASL Compiler, version X2034:
16245 Now checks for (and generates an error if detected) the use of a
16246 Break or Continue statement without an enclosing While statement.
16249 Successfully generated the compiler with the Intel 64-bit C
16252 ----------------------------------------
16253 Summary of changes for this label: 12_05_01
16255 1) ACPI CA Core Subsystem:
16257 The ACPI 2.0 CopyObject operator is fully implemented. This
16258 operator creates a new copy of an object (and is also used to
16259 bypass the "implicit conversion" mechanism of the Store operator.)
16261 The ACPI 2.0 semantics for the SizeOf operator are fully
16262 implemented. The change is that performing a SizeOf on a
16263 reference object causes an automatic dereference of the object to
16264 tha actual value before the size is evaluated. This behavior was
16265 undefined in ACPI 1.0.
16267 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
16268 have been implemented. The interrupt polarity and mode are now
16271 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
16272 appearing in Package objects were not properly converted to
16273 integers when the internal Package was converted to an external
16274 object (via the AcpiEvaluateObject interface.)
16276 Fixed a problem with the namespace object deletion mechanism for
16277 objects created by control methods. There were two parts to this
16278 problem: 1) Objects created during the initialization phase method
16279 parse were not being deleted, and 2) The object owner ID mechanism
16280 to track objects was broken.
16282 Fixed a problem where the use of the ASL Scope operator within a
16283 control method would result in an invalid opcode exception.
16285 Fixed a problem introduced in the previous label where the buffer
16286 length required for the _PRT structure was not being returned
16289 Code and Data Size: Current core subsystem library sizes are shown
16290 below. These are the code and data sizes for the acpica.lib
16291 produced by the Microsoft Visual C++ 6.0 compiler, and these
16292 values do not include any ACPI driver or OSPM code. The debug
16293 version of the code includes the debug output trace mechanism and
16294 has a larger code and data size. Note that these values will vary
16295 depending on the efficiency of the compiler and the compiler
16296 options used during generation.
16298 Previous Release (11_20_01)
16299 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16300 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16303 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16304 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16308 Updated all files to apply cleanly against 2.4.16.
16310 Added basic PCI Interrupt Routing Table (PRT) support for IA32
16311 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
16312 version supports both static and dyanmic PRT entries, but dynamic
16313 entries are treated as if they were static (not yet
16314 reconfigurable). Architecture- specific code to use this data is
16315 absent on IA32 but should be available shortly.
16317 Changed the initialization sequence to start the ACPI interpreter
16318 (acpi_init) prior to initialization of the PCI driver (pci_init)
16319 in init/main.c. This ordering is required to support PRT and
16320 facilitate other (future) enhancement. A side effect is that the
16321 ACPI bus driver and certain device drivers can no longer be loaded
16324 Modified the 'make menuconfig' options to allow PCI Interrupt
16325 Routing support to be included without the ACPI Bus and other
16328 3) ASL Compiler, version X2033:
16330 Fixed some issues with the use of the new CopyObject and
16331 DataTableRegion operators. Both are fully functional.
16333 ----------------------------------------
16334 Summary of changes for this label: 11_20_01
16336 20 November 2001. Summary of changes for this release.
16338 1) ACPI CA Core Subsystem:
16340 Updated Index support to match ACPI 2.0 semantics. Storing a
16341 Integer, String, or Buffer to an Index of a Buffer will store only
16342 the least-significant byte of the source to the Indexed buffer
16343 byte. Multiple writes are not performed.
16345 Fixed a problem where the access type used in an AccessAs ASL
16346 operator was not recorded correctly into the field object.
16348 Fixed a problem where ASL Event objects were created in a
16349 signalled state. Events are now created in an unsignalled state.
16351 The internal object cache is now purged after table loading and
16352 initialization to reduce the use of dynamic kernel memory -- on
16353 the assumption that object use is greatest during the parse phase
16354 of the entire table (versus the run-time use of individual control
16357 ACPI 2.0 variable-length packages are now fully operational.
16359 Code and Data Size: Code and Data optimizations have permitted new
16360 feature development with an actual reduction in the library size.
16361 Current core subsystem library sizes are shown below. These are
16362 the code and data sizes for the acpica.lib produced by the
16363 Microsoft Visual C++ 6.0 compiler, and these values do not include
16364 any ACPI driver or OSPM code. The debug version of the code
16365 includes the debug output trace mechanism and has a larger code
16366 and data size. Note that these values will vary depending on the
16367 efficiency of the compiler and the compiler options used during
16370 Previous Release (11_09_01):
16371 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16372 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16375 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16376 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16380 Enhanced the ACPI boot-time initialization code to allow the use
16381 of Local APIC tables for processor enumeration on IA-32, and to
16382 pave the way for a fully MPS-free boot (on SMP systems) in the
16383 near future. This functionality replaces
16384 arch/i386/kernel/acpitables.c, which was introduced in an earlier
16385 2.4.15-preX release. To enable this feature you must add
16386 "acpi_boot=on" to the kernel command line -- see the help entry
16387 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16390 Restructured the configuration options to allow boot-time table
16391 parsing support without inclusion of the ACPI Interpreter (and
16394 NOTE: This release does not include fixes for the reported events,
16395 power-down, and thermal passive cooling issues (coming soon).
16399 Added additional typechecking for Fields within restricted access
16400 Operation Regions. All fields within EC and CMOS regions must be
16401 declared with ByteAcc. All fields withing SMBus regions must be
16402 declared with the BufferAcc access type.
16404 Fixed a problem where the listing file output of control methods
16405 no longer interleaved the actual AML code with the ASL source
16411 ----------------------------------------
16412 Summary of changes for this label: 11_09_01
16414 1) ACPI CA Core Subsystem:
16416 Implemented ACPI 2.0-defined support for writes to fields with a
16417 Buffer, String, or Integer source operand that is smaller than the
16418 target field. In these cases, the source operand is zero-extended
16419 to fill the target field.
16421 Fixed a problem where a Field starting bit offset (within the
16422 parent operation region) was calculated incorrectly if the
16424 alignment of the field differed from the access width. This
16425 affected CreateWordField, CreateDwordField, CreateQwordField, and
16426 possibly other fields that use the "AccessAny" keyword.
16428 Fixed a problem introduced in the 11_02_01 release where indirect
16429 stores through method arguments did not operate correctly.
16433 Implemented boot-time ACPI table parsing support
16434 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16435 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16436 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16437 processors, memory, and interrupts during setup_arch(). Note that
16438 this patch does not include the required architecture-specific
16439 changes required to apply this information -- subsequent patches
16440 will be posted for both IA32 and IA64 to achieve this.
16442 Added low-level sleep support for IA32 platforms, courtesy of Pat
16443 Mochel. This allows IA32 systems to transition to/from various
16444 sleeping states (e.g. S1, S3), although the lack of a centralized
16445 driver model and power-manageable drivers will prevent its
16446 (successful) use on most systems.
16448 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16449 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16450 tables" option, etc.
16452 Increased the default timeout for the EC driver from 1ms to 10ms
16453 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16456 ----------------------------------------
16457 Summary of changes for this label: 11_02_01
16459 1) ACPI CA Core Subsystem:
16461 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16462 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16465 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16466 changes to support ACPI 2.0 Qword field access. Read/Write
16467 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16468 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16469 the value parameter for the address space handler interface is now
16470 an ACPI_INTEGER. OSL implementations of these interfaces must now
16471 handle the case where the Width parameter is 64.
16473 Index Fields: Fixed a problem where unaligned bit assembly and
16474 disassembly for IndexFields was not supported correctly.
16476 Index and Bank Fields: Nested Index and Bank Fields are now
16477 supported. During field access, a check is performed to ensure
16478 that the value written to an Index or Bank register is not out of
16479 the range of the register. The Index (or Bank) register is
16480 written before each access to the field data. Future support will
16481 include allowing individual IndexFields to be wider than the
16482 DataRegister width.
16484 Fields: Fixed a problem where the AML interpreter was incorrectly
16485 attempting to write beyond the end of a Field/OpRegion. This was
16486 a boundary case that occurred when a DWORD field was written to a
16487 BYTE access OpRegion, forcing multiple writes and causing the
16488 interpreter to write one datum too many.
16490 Fields: Fixed a problem with Field/OpRegion access where the
16491 starting bit address of a field was incorrectly calculated if the
16492 current access type was wider than a byte (WordAcc, DwordAcc, or
16495 Fields: Fixed a problem where forward references to individual
16496 FieldUnits (individual Field names within a Field definition) were
16497 not resolved during the AML table load.
16499 Fields: Fixed a problem where forward references from a Field
16500 definition to the parent Operation Region definition were not
16501 resolved during the AML table load.
16503 Fields: Duplicate FieldUnit names within a scope are now detected
16504 during AML table load.
16506 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16507 returned an incorrect name for the root node.
16509 Code and Data Size: Code and Data optimizations have permitted new
16510 feature development with an actual reduction in the library size.
16511 Current core subsystem library sizes are shown below. These are
16512 the code and data sizes for the acpica.lib produced by the
16513 Microsoft Visual C++ 6.0 compiler, and these values do not include
16514 any ACPI driver or OSPM code. The debug version of the code
16515 includes the debug output trace mechanism and has a larger code
16516 and data size. Note that these values will vary depending on the
16517 efficiency of the compiler and the compiler options used during
16520 Previous Release (10_18_01):
16521 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16522 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16525 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16526 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16530 Improved /proc processor output (Pavel Machek) Re-added
16531 MODULE_LICENSE("GPL") to all modules.
16533 3) ASL Compiler version X2030:
16535 Duplicate FieldUnit names within a scope are now detected and
16540 Programmer Reference updated to reflect OSL and address space
16541 handler interface changes described above.
16543 ----------------------------------------
16544 Summary of changes for this label: 10_18_01
16546 ACPI CA Core Subsystem:
16548 Fixed a problem with the internal object reference count mechanism
16549 that occasionally caused premature object deletion. This resolves
16550 all of the outstanding problem reports where an object is deleted
16551 in the middle of an interpreter evaluation. Although this problem
16552 only showed up in rather obscure cases, the solution to the
16553 problem involved an adjustment of all reference counts involving
16554 objects attached to namespace nodes.
16556 Fixed a problem with Field support in the interpreter where
16557 writing to an aligned field whose length is an exact multiple (2
16558 or greater) of the field access granularity would cause an attempt
16559 to write beyond the end of the field.
16561 The top level AML opcode execution functions within the
16562 interpreter have been renamed with a more meaningful and
16563 consistent naming convention. The modules exmonad.c and
16564 exdyadic.c were eliminated. New modules are exoparg1.c,
16565 exoparg2.c, exoparg3.c, and exoparg6.c.
16567 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16569 Fixed a problem where the AML debugger was causing some internal
16570 objects to not be deleted during subsystem termination.
16572 Fixed a problem with the external AcpiEvaluateObject interface
16573 where the subsystem would fault if the named object to be
16574 evaluated refered to a constant such as Zero, Ones, etc.
16576 Fixed a problem with IndexFields and BankFields where the
16577 subsystem would fault if the index, data, or bank registers were
16578 not defined in the same scope as the field itself.
16580 Added printf format string checking for compilers that support
16581 this feature. Corrected more than 50 instances of issues with
16582 format specifiers within invocations of ACPI_DEBUG_PRINT
16583 throughout the core subsystem code.
16585 The ASL "Revision" operator now returns the ACPI support level
16586 implemented in the core - the value "2" since the ACPI 2.0 support
16587 is more than 50% implemented.
16589 Enhanced the output of the AML debugger "dump namespace" command
16590 to output in a more human-readable form.
16592 Current core subsystem library code sizes are shown below. These
16594 are the code and data sizes for the acpica.lib produced by the
16595 Microsoft Visual C++ 6.0 compiler, and these values do not include
16596 any ACPI driver or OSPM code. The debug version of the code
16597 includes the full debug trace mechanism -- leading to a much
16599 larger code and data size. Note that these values will vary
16600 depending on the efficiency of the compiler and the compiler
16601 options used during generation.
16603 Previous Label (09_20_01):
16604 Non-Debug Version: 65K Code, 5K Data, 70K Total
16605 Debug Version: 138K Code, 58K Data, 196K Total
16609 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16610 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16614 Implemented a "Bad BIOS Blacklist" to track machines that have
16615 known ASL/AML problems.
16617 Enhanced the /proc interface for the thermal zone driver and added
16618 support for _HOT (the critical suspend trip point). The 'info'
16619 file now includes threshold/policy information, and allows setting
16620 of _SCP (cooling preference) and _TZP (polling frequency) values
16621 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16622 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16623 preference to the passive/quiet mode (if supported by the ASL).
16625 Implemented a workaround for a gcc bug that resuted in an OOPs
16626 when loading the control method battery driver.
16628 ----------------------------------------
16629 Summary of changes for this label: 09_20_01
16631 ACPI CA Core Subsystem:
16633 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16634 modified to allow individual GPE levels to be flagged as wake-
16635 enabled (i.e., these GPEs are to remain enabled when the platform
16638 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16639 support wake-enabled GPEs. This means that upon entering the
16640 sleep state, all GPEs that are not wake-enabled are disabled.
16641 When leaving the sleep state, these GPEs are reenabled.
16643 A local double-precision divide/modulo module has been added to
16644 enhance portability to OS kernels where a 64-bit math library is
16645 not available. The new module is "utmath.c".
16647 Several optimizations have been made to reduce the use of CPU
16648 stack. Originally over 2K, the maximum stack usage is now below
16649 2K at 1860 bytes (1.82k)
16651 Fixed a problem with the AcpiGetFirmwareTable interface where the
16652 root table pointer was not mapped into a logical address properly.
16654 Fixed a problem where a NULL pointer was being dereferenced in the
16655 interpreter code for the ASL Notify operator.
16657 Fixed a problem where the use of the ASL Revision operator
16658 returned an error. This operator now returns the current version
16659 of the ACPI CA core subsystem.
16661 Fixed a problem where objects passed as control method parameters
16662 to AcpiEvaluateObject were always deleted at method termination.
16663 However, these objects may end up being stored into the namespace
16664 by the called method. The object reference count mechanism was
16665 applied to these objects instead of a force delete.
16667 Fixed a problem where static strings or buffers (contained in the
16668 AML code) that are declared as package elements within the ASL
16669 code could cause a fault because the interpreter would attempt to
16670 delete them. These objects are now marked with the "static
16671 object" flag to prevent any attempt to delete them.
16673 Implemented an interpreter optimization to use operands directly
16674 from the state object instead of extracting the operands to local
16675 variables. This reduces stack use and code size, and improves
16678 The module exxface.c was eliminated as it was an unnecessary extra
16681 Current core subsystem library code sizes are shown below. These
16682 are the code and data sizes for the acpica.lib produced by the
16683 Microsoft Visual C++ 6.0 compiler, and these values do not include
16684 any ACPI driver or OSPM code. The debug version of the code
16685 includes the full debug trace mechanism -- leading to a much
16686 larger code and data size. Note that these values will vary
16687 depending on the efficiency of the compiler and the compiler
16688 options used during generation.
16690 Non-Debug Version: 65K Code, 5K Data, 70K Total
16691 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16692 Total (Previously 195K)
16696 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16697 Integer objects are now 64 bits wide
16699 All Acpi data types and structures are now in lower case. Only
16700 Acpi macros are upper case for differentiation.
16704 Changes to the external interfaces as described above.
16706 ----------------------------------------
16707 Summary of changes for this label: 08_31_01
16709 ACPI CA Core Subsystem:
16711 A bug with interpreter implementation of the ASL Divide operator
16712 was found and fixed. The implicit function return value (not the
16713 explicit store operands) was returning the remainder instead of
16714 the quotient. This was a longstanding bug and it fixes several
16715 known outstanding issues on various platforms.
16717 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16718 been further optimized for size. There are 700 invocations of the
16719 DEBUG_PRINT macro alone, so each optimization reduces the size of
16720 the debug version of the subsystem significantly.
16722 A stack trace mechanism has been implemented. The maximum stack
16723 usage is about 2K on 32-bit platforms. The debugger command "stat
16724 stack" will display the current maximum stack usage.
16726 All public symbols and global variables within the subsystem are
16727 now prefixed with the string "Acpi". This keeps all of the
16728 symbols grouped together in a kernel map, and avoids conflicts
16729 with other kernel subsystems.
16731 Most of the internal fixed lookup tables have been moved into the
16732 code segment via the const operator.
16734 Several enhancements have been made to the interpreter to both
16735 reduce the code size and improve performance.
16737 Current core subsystem library code sizes are shown below. These
16738 are the code and data sizes for the acpica.lib produced by the
16739 Microsoft Visual C++ 6.0 compiler, and these values do not include
16740 any ACPI driver or OSPM code. The debug version of the code
16741 includes the full debug trace mechanism which contains over 700
16742 invocations of the DEBUG_PRINT macro, 500 function entry macro
16743 invocations, and over 900 function exit macro invocations --
16744 leading to a much larger code and data size. Note that these
16745 values will vary depending on the efficiency of the compiler and
16746 the compiler options used during generation.
16748 Non-Debug Version: 64K Code, 5K Data, 69K Total
16749 Debug Version: 137K Code, 58K Data, 195K Total
16753 Implemented wbinvd() macro, pending a kernel-wide definition.
16755 Fixed /proc/acpi/event to handle poll() and short reads.
16757 ASL Compiler, version X2026:
16759 Fixed a problem introduced in the previous label where the AML
16761 code emitted for package objects produced packages with zero
16764 ----------------------------------------
16765 Summary of changes for this label: 08_16_01
16767 ACPI CA Core Subsystem:
16769 The following ACPI 2.0 ASL operators have been implemented in the
16770 AML interpreter (These are already supported by the Intel ASL
16771 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16772 ToBuffer. Support for 64-bit AML constants is implemented in the
16773 AML parser, debugger, and disassembler.
16775 The internal memory tracking mechanism (leak detection code) has
16776 been upgraded to reduce the memory overhead (a separate tracking
16777 block is no longer allocated for each memory allocation), and now
16778 supports all of the internal object caches.
16780 The data structures and code for the internal object caches have
16781 been coelesced and optimized so that there is a single cache and
16782 memory list data structure and a single group of functions that
16783 implement generic cache management. This has reduced the code
16784 size in both the debug and release versions of the subsystem.
16786 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16787 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16788 different, because it generates a single call to an internal
16789 function. This results in a savings of about 90 bytes per
16790 invocation, resulting in an overall code and data savings of about
16791 16% in the debug version of the subsystem.
16795 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16798 Integrated low-level sleep code by Patrick Mochel.
16800 Further tweaked source code Linuxization.
16806 Support for ACPI 2.0 variable length packages is fixed/completed.
16808 Fixed a problem where the optional length parameter for the ACPI
16809 2.0 ToString operator.
16811 Fixed multiple extraneous error messages when a syntax error is
16812 detected within the declaration line of a control method.
16814 ----------------------------------------
16815 Summary of changes for this label: 07_17_01
16817 ACPI CA Core Subsystem:
16819 Added a new interface named AcpiGetFirmwareTable to obtain any
16820 ACPI table via the ACPI signature. The interface can be called at
16821 any time during kernel initialization, even before the kernel
16822 virtual memory manager is initialized and paging is enabled. This
16823 allows kernel subsystems to obtain ACPI tables very early, even
16824 before the ACPI CA subsystem is initialized.
16826 Fixed a problem where Fields defined with the AnyAcc attribute
16827 could be resolved to the incorrect address under the following
16828 conditions: 1) the field width is larger than 8 bits and 2) the
16829 parent operation region is not defined on a DWORD boundary.
16831 Fixed a problem where the interpreter is not being locked during
16832 namespace initialization (during execution of the _INI control
16833 methods), causing an error when an attempt is made to release it
16836 ACPI 2.0 support in the AML Interpreter has begun and will be
16837 ongoing throughout the rest of this year. In this label, The Mod
16838 operator is implemented.
16840 Added a new data type to contain full PCI addresses named
16841 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16842 and Function values.
16846 Enhanced the Linux version of the source code to change most
16847 capitalized ACPI type names to lowercase. For example, all
16848 instances of ACPI_STATUS are changed to acpi_status. This will
16849 result in a large diff, but the change is strictly cosmetic and
16850 aligns the CA code closer to the Linux coding standard.
16854 The interfaces to the PCI configuration space have been changed to
16855 add the PCI Segment number and to split the single 32-bit combined
16856 DeviceFunction field into two 16-bit fields. This was
16857 accomplished by moving the four values that define an address in
16858 PCI configuration space (segment, bus, device, and function) to
16859 the new ACPI_PCI_ID structure.
16861 The changes to the PCI configuration space interfaces led to a
16862 reexamination of the complete set of address space access
16863 interfaces for PCI, I/O, and Memory. The previously existing 18
16864 interfaces have proven difficult to maintain (any small change
16865 must be propagated across at least 6 interfaces) and do not easily
16866 allow for future expansion to 64 bits if necessary. Also, on some
16867 systems, it would not be appropriate to demultiplex the access
16868 width (8, 16, 32,or 64) before calling the OSL if the
16869 corresponding native OS interfaces contain a similar access width
16870 parameter. For these reasons, the 18 address space interfaces
16871 have been replaced by these 6 new ones:
16873 AcpiOsReadPciConfiguration
16874 AcpiOsWritePciConfiguration
16880 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16881 to perform the platform and/or OS-specific actions necessary to
16882 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16883 interface will simply call down to the CA core to perform the low-
16884 memory search for the table. On IA-64, the RSDP is obtained from
16885 EFI. Migrating this interface to the OSL allows the CA core to
16887 remain OS and platform independent.
16889 Added a new interface named AcpiOsSignal to provide a generic
16890 "function code and pointer" interface for various miscellaneous
16891 signals and notifications that must be made to the host OS. The
16892 first such signals are intended to support the ASL Fatal and
16893 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16894 interface has been obsoleted.
16896 The definition of the AcpiFormatException interface has been
16897 changed to simplify its use. The caller no longer must supply a
16898 buffer to the call; A pointer to a const string is now returned
16899 directly. This allows the call to be easily used in printf
16900 statements, etc. since the caller does not have to manage a local
16904 ASL Compiler, Version X2025:
16906 The ACPI 2.0 Switch/Case/Default operators have been implemented
16907 and are fully functional. They will work with all ACPI 1.0
16908 interpreters, since the operators are simply translated to If/Else
16911 The ACPI 2.0 ElseIf operator is implemented and will also work
16912 with 1.0 interpreters, for the same reason.
16914 Implemented support for ACPI 2.0 variable-length packages. These
16915 packages have a separate opcode, and their size is determined by
16916 the interpreter at run-time.
16918 Documentation The ACPI CA Programmer Reference has been updated to
16919 reflect the new interfaces and changes to existing interfaces.
16921 ------------------------------------------
16922 Summary of changes for this label: 06_15_01
16924 ACPI CA Core Subsystem:
16926 Fixed a problem where a DWORD-accessed field within a Buffer
16927 object would get its byte address inadvertently rounded down to
16928 the nearest DWORD. Buffers are always Byte-accessible.
16930 ASL Compiler, version X2024:
16932 Fixed a problem where the Switch() operator would either fault or
16933 hang the compiler. Note however, that the AML code for this ACPI
16934 2.0 operator is not yet implemented.
16936 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16939 Implementation of the CreateField operator automatically converts
16940 a reference to a named field within a resource descriptor from a
16941 byte offset to a bit offset if required.
16943 Added some missing named fields from the resource descriptor
16944 support. These are the names that are automatically created by the
16945 compiler to reference fields within a descriptor. They are only
16946 valid at compile time and are not passed through to the AML
16949 Resource descriptor named fields are now typed as Integers and
16950 subject to compile-time typechecking when used in expressions.
16952 ------------------------------------------
16953 Summary of changes for this label: 05_18_01
16955 ACPI CA Core Subsystem:
16957 Fixed a couple of problems in the Field support code where bits
16958 from adjacent fields could be returned along with the proper field
16959 bits. Restructured the field support code to improve performance,
16960 readability and maintainability.
16962 New DEBUG_PRINTP macro automatically inserts the procedure name
16963 into the output, saving hundreds of copies of procedure name
16964 strings within the source, shrinking the memory footprint of the
16965 debug version of the core subsystem.
16967 Source Code Structure:
16969 The source code directory tree was restructured to reflect the
16970 current organization of the component architecture. Some files
16971 and directories have been moved and/or renamed.
16975 Fixed leaking kacpidpc processes.
16977 Fixed queueing event data even when /proc/acpi/event is not
16980 ASL Compiler, version X2020:
16982 Memory allocation performance enhancement - over 24X compile time
16983 improvement on large ASL files. Parse nodes and namestring
16984 buffers are now allocated from a large internal compiler buffer.
16986 The temporary .SRC file is deleted unless the "-s" option is
16989 The "-d" debug output option now sends all output to the .DBG file
16990 instead of the console.
16992 "External" second parameter is now optional
16994 "ElseIf" syntax now properly allows the predicate
16996 Last operand to "Load" now recognized as a Target operand
16998 Debug object can now be used anywhere as a normal object.
17000 ResourceTemplate now returns an object of type BUFFER
17002 EISAID now returns an object of type INTEGER
17004 "Index" now works with a STRING operand
17006 "LoadTable" now accepts optional parameters
17008 "ToString" length parameter is now optional
17010 "Interrupt (ResourceType," parse error fixed.
17012 "Register" with a user-defined region space parse error fixed
17014 Escaped backslash at the end of a string ("\\") scan/parse error
17017 "Revision" is now an object of type INTEGER.
17021 ------------------------------------------
17022 Summary of changes for this label: 05_02_01
17026 /proc/acpi/event now blocks properly.
17028 Removed /proc/sys/acpi. You can still dump your DSDT from
17031 ACPI CA Core Subsystem:
17033 Fixed a problem introduced in the previous label where some of the
17034 "small" resource descriptor types were not recognized.
17036 Improved error messages for the case where an ASL Field is outside
17037 the range of the parent operation region.
17039 ASL Compiler, version X2018:
17042 Added error detection for ASL Fields that extend beyond the length
17043 of the parent operation region (only if the length of the region
17044 is known at compile time.) This includes fields that have a
17045 minimum access width that is smaller than the parent region, and
17046 individual field units that are partially or entirely beyond the
17047 extent of the parent.
17051 ------------------------------------------
17052 Summary of changes for this label: 04_27_01
17054 ACPI CA Core Subsystem:
17056 Fixed a problem where the namespace mutex could be released at the
17057 wrong time during execution of AcpiRemoveAddressSpaceHandler.
17059 Added optional thread ID output for debug traces, to simplify
17060 debugging of multiple threads. Added context switch notification
17061 when the debug code realizes that a different thread is now
17062 executing ACPI code.
17064 Some additional external data types have been prefixed with the
17065 string "ACPI_" for consistency. This may effect existing code.
17066 The data types affected are the external callback typedefs - e.g.,
17068 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
17072 Fixed an issue with the OSL semaphore implementation where a
17073 thread was waking up with an error from receiving a SIGCHLD
17076 Linux version of ACPI CA now uses the system C library for string
17077 manipulation routines instead of a local implementation.
17079 Cleaned up comments and removed TBDs.
17081 ASL Compiler, version X2017:
17083 Enhanced error detection and reporting for all file I/O
17088 Programmer Reference updated to version 1.06.
17092 ------------------------------------------
17093 Summary of changes for this label: 04_13_01
17095 ACPI CA Core Subsystem:
17097 Restructured support for BufferFields and RegionFields.
17098 BankFields support is now fully operational. All known 32-bit
17099 limitations on field sizes have been removed. Both BufferFields
17100 and (Operation) RegionFields are now supported by the same field
17103 Resource support now supports QWORD address and IO resources. The
17104 16/32/64 bit address structures and the Extended IRQ structure
17105 have been changed to properly handle Source Resource strings.
17107 A ThreadId of -1 is now used to indicate a "mutex not acquired"
17108 condition internally and must never be returned by AcpiOsThreadId.
17109 This reserved value was changed from 0 since Unix systems allow a
17114 Driver code reorganized to enhance portability
17116 Added a kernel configuration option to control ACPI_DEBUG
17118 Fixed the EC driver to honor _GLK.
17120 ASL Compiler, version X2016:
17122 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
17123 address space was set to 0, not 0x7f as it should be.
17125 ------------------------------------------
17126 Summary of changes for this label: 03_13_01
17128 ACPI CA Core Subsystem:
17130 During ACPI initialization, the _SB_._INI method is now run if
17133 Notify handler fix - notifies are deferred until the parent method
17134 completes execution. This fixes the "mutex already acquired"
17135 issue seen occasionally.
17137 Part of the "implicit conversion" rules in ACPI 2.0 have been
17138 found to cause compatibility problems with existing ASL/AML. The
17139 convert "result-to-target-type" implementation has been removed
17140 for stores to method Args and Locals. Source operand conversion
17141 is still fully implemented. Possible changes to ACPI 2.0
17142 specification pending.
17144 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
17147 Fix for compiler warnings for 64-bit compiles.
17151 /proc output aligned for easier parsing.
17153 Release-version compile problem fixed.
17155 New kernel configuration options documented in Configure.help.
17157 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
17162 Power resource driver integrated with bus manager.
17164 Fixed kernel fault during active cooling for thermal zones.
17168 The source code tree has been restructured.
17172 ------------------------------------------
17173 Summary of changes for this label: 03_02_01
17175 Linux OS Services Layer (OSL):
17177 Major revision of all Linux-specific code.
17179 Modularized all ACPI-specific drivers.
17181 Added new thermal zone and power resource drivers.
17183 Revamped /proc interface (new functionality is under /proc/acpi).
17185 New kernel configuration options.
17187 Linux known issues:
17189 New kernel configuration options not documented in Configure.help
17193 Module dependencies not currently implemented. If used, they
17194 should be loaded in this order: busmgr, power, ec, system,
17195 processor, battery, ac_adapter, button, thermal.
17197 Modules will not load if CONFIG_MODVERSION is set.
17199 IBM 600E - entering S5 may reboot instead of shutting down.
17201 IBM 600E - Sleep button may generate "Invalid <NULL> context"
17204 Some systems may fail with "execution mutex already acquired"
17207 ACPI CA Core Subsystem:
17209 Added a new OSL Interface, AcpiOsGetThreadId. This was required
17210 for the deadlock detection code. Defined to return a non-zero, 32-
17211 bit thread ID for the currently executing thread. May be a non-
17212 zero constant integer on single-thread systems.
17214 Implemented deadlock detection for internal subsystem mutexes. We
17215 may add conditional compilation for this code (debug only) later.
17217 ASL/AML Mutex object semantics are now fully supported. This
17218 includes multiple acquires/releases by owner and support for the
17220 Mutex SyncLevel parameter.
17222 A new "Force Release" mechanism automatically frees all ASL
17223 Mutexes that have been acquired but not released when a thread
17224 exits the interpreter. This forces conformance to the ACPI spec
17225 ("All mutexes must be released when an invocation exits") and
17226 prevents deadlocked ASL threads. This mechanism can be expanded
17227 (later) to monitor other resource acquisitions if OEM ASL code
17228 continues to misbehave (which it will).
17230 Several new ACPI exception codes have been added for the Mutex
17233 Recursive method calls are now allowed and supported (the ACPI
17234 spec does in fact allow recursive method calls.) The number of
17235 recursive calls is subject to the restrictions imposed by the
17236 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
17239 Implemented support for the SyncLevel parameter for control
17240 methods (ACPI 2.0 feature)
17242 Fixed a deadlock problem when multiple threads attempted to use
17245 Fixed a problem where the string length of a String package
17246 element was not always set in a package returned from
17247 AcpiEvaluateObject.
17249 Fixed a problem where the length of a String package element was
17250 not always included in the length of the overall package returned
17251 from AcpiEvaluateObject.
17253 Added external interfaces (Acpi*) to the ACPI debug memory
17254 manager. This manager keeps a list of all outstanding
17255 allocations, and can therefore detect memory leaks and attempts to
17256 free memory blocks more than once. Useful for code such as the
17257 power manager, etc. May not be appropriate for device drivers.
17258 Performance with the debug code enabled is slow.
17260 The ACPI Global Lock is now an optional hardware element.
17262 ASL Compiler Version X2015:
17264 Integrated changes to allow the compiler to be generated on
17265 multiple platforms.
17267 Linux makefile added to generate the compiler on Linux
17271 All platform-specific headers have been moved to their own
17272 subdirectory, Include/Platform.
17274 New source file added, Interpreter/ammutex.c
17276 New header file, Include/acstruct.h
17280 The programmer reference has been updated for the following new
17281 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
17283 ------------------------------------------
17284 Summary of changes for this label: 02_08_01
17286 Core ACPI CA Subsystem: Fixed a problem where an error was
17287 incorrectly returned if the return resource buffer was larger than
17288 the actual data (in the resource interfaces).
17290 References to named objects within packages are resolved to the
17292 full pathname string before packages are returned directly (via
17293 the AcpiEvaluateObject interface) or indirectly via the resource
17296 Linux OS Services Layer (OSL):
17298 Improved /proc battery interface.
17301 Added C-state debugging output and other miscellaneous fixes.
17303 ASL Compiler Version X2014:
17305 All defined method arguments can now be used as local variables,
17306 including the ones that are not actually passed in as parameters.
17307 The compiler tracks initialization of the arguments and issues an
17308 exception if they are used without prior assignment (just like
17311 The -o option now specifies a filename prefix that is used for all
17312 output files, including the AML output file. Otherwise, the
17313 default behavior is as follows: 1) the AML goes to the file
17314 specified in the DSDT. 2) all other output files use the input
17315 source filename as the base.
17317 ------------------------------------------
17318 Summary of changes for this label: 01_25_01
17320 Core ACPI CA Subsystem: Restructured the implementation of object
17321 store support within the interpreter. This includes support for
17322 the Store operator as well as any ASL operators that include a
17325 Partially implemented support for Implicit Result-to-Target
17326 conversion. This is when a result object is converted on the fly
17327 to the type of an existing target object. Completion of this
17328 support is pending further analysis of the ACPI specification
17329 concerning this matter.
17331 CPU-specific code has been removed from the subsystem (hardware
17334 New Power Management Timer functions added
17336 Linux OS Services Layer (OSL): Moved system state transition code
17337 to the core, fixed it, and modified Linux OSL accordingly.
17339 Fixed C2 and C3 latency calculations.
17342 We no longer use the compilation date for the version message on
17343 initialization, but retrieve the version from AcpiGetSystemInfo().
17345 Incorporated for fix Sony VAIO machines.
17347 Documentation: The Programmer Reference has been updated and
17351 ASL Compiler: Version X2013: Fixed a problem where the line
17352 numbering and error reporting could get out of sync in the
17353 presence of multiple include files.
17355 ------------------------------------------
17356 Summary of changes for this label: 01_15_01
17358 Core ACPI CA Subsystem:
17360 Implemented support for type conversions in the execution of the
17361 ASL Concatenate operator (The second operand is converted to
17362 match the type of the first operand before concatenation.)
17364 Support for implicit source operand conversion is partially
17365 implemented. The ASL source operand types Integer, Buffer, and
17366 String are freely interchangeable for most ASL operators and are
17367 converted by the interpreter on the fly as required. Implicit
17368 Target operand conversion (where the result is converted to the
17369 target type before storing) is not yet implemented.
17371 Support for 32-bit and 64-bit BCD integers is implemented.
17373 Problem fixed where a field read on an aligned field could cause a
17374 read past the end of the field.
17376 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
17377 does not return a value, but the caller expects one. (The ASL
17378 compiler flags this as a warning.)
17383 1. Static typechecking of all operands is implemented. This
17384 prevents the use of invalid objects (such as using a Package where
17385 an Integer is required) at compile time instead of at interpreter
17387 2. The ASL source line is printed with ALL errors and warnings.
17388 3. Bug fix for source EOF without final linefeed.
17389 4. Debug option is split into a parse trace and a namespace trace.
17390 5. Namespace output option (-n) includes initial values for
17391 integers and strings.
17392 6. Parse-only option added for quick syntax checking.
17393 7. Compiler checks for duplicate ACPI name declarations
17396 1. Relaxed typechecking to allow interchangeability between
17397 strings, integers, and buffers. These types are now converted by
17398 the interpreter at runtime.
17399 2. Compiler reports time taken by each internal subsystem in the
17403 ------------------------------------------
17404 Summary of changes for this label: 12_14_00
17408 This is the first official release of the compiler. Since the
17409 compiler requires elements of the Core Subsystem, this label
17410 synchronizes everything.
17412 ------------------------------------------
17413 Summary of changes for this label: 12_08_00
17416 Fixed a problem where named references within the ASL definition
17417 of both OperationRegions and CreateXXXFields did not work
17418 properly. The symptom was an AE_AML_OPERAND_TYPE during
17419 initialization of the region/field. This is similar (but not
17420 related internally) to the problem that was fixed in the last
17423 Implemented both 32-bit and 64-bit support for the BCD ASL
17424 functions ToBCD and FromBCD.
17426 Updated all legal headers to include "2000" in the copyright
17429 ------------------------------------------
17430 Summary of changes for this label: 12_01_00
17432 Fixed a problem where method invocations within the ASL definition
17433 of both OperationRegions and CreateXXXFields did not work
17434 properly. The symptom was an AE_AML_OPERAND_TYPE during
17435 initialization of the region/field:
17437 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17438 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17441 Fixed a problem where operators with more than one nested
17442 subexpression would fail. The symptoms were varied, by mostly
17443 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17444 problem that has gone unnoticed until now.
17446 Subtract (Add (1,2), Multiply (3,4))
17448 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17449 previous build (The prefix part of a relative path was handled
17452 Fixed a problem where Operation Region initialization failed if
17453 the operation region name was a "namepath" instead of a simple
17454 "nameseg". Symptom was an AE_NO_OPERAND error.
17456 Fixed a problem where an assignment to a local variable via the
17457 indirect RefOf mechanism only worked for the first such
17458 assignment. Subsequent assignments were ignored.
17460 ------------------------------------------
17461 Summary of changes for this label: 11_15_00
17463 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17464 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17465 the AML interpreter does NOT have support for the new 2.0 ASL
17466 grammar terms at this time.
17468 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17471 All physical memory addresses across all platforms are now 64 bits
17472 wide. Logical address width remains dependent on the platform
17475 AcpiOsMapMemory interface changed to a 64-bit physical address.
17477 The AML interpreter integer size is now 64 bits, as per the ACPI
17480 For backwards compatibility with ACPI 1.0, ACPI tables with a
17481 revision number less than 2 use 32-bit integers only.
17483 Fixed a problem where the evaluation of OpRegion operands did not
17484 always resolve them to numbers properly.
17486 ------------------------------------------
17487 Summary of changes for this label: 10_20_00
17489 Fix for CBN_._STA issue. This fix will allow correct access to
17490 CBN_ OpRegions when the _STA returns 0x8.
17492 Support to convert ACPI constants (Ones, Zeros, One) to actual
17493 values before a package object is returned
17495 Fix for method call as predicate to if/while construct causing
17496 incorrect if/while behavior
17498 Fix for Else block package lengths sometimes calculated wrong (if
17501 Fix for Processor object length field, was always zero
17503 Table load abort if FACP sanity check fails
17505 Fix for problem with Scope(name) if name already exists
17507 Warning emitted if a named object referenced cannot be found
17508 (resolved) during method execution.
17514 ------------------------------------------
17515 Summary of changes for this label: 9_29_00
17517 New table initialization interfaces: AcpiInitializeSubsystem no
17518 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17519 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17520 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17523 Note: These interface changes require changes to all existing OSDs
17525 The PCI_Config default address space handler is always installed
17526 at the root namespace object.
17528 -------------------------------------------
17529 Summary of changes for this label: 09_15_00
17531 The new initialization architecture is implemented. New
17532 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17533 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17535 (Namespace is automatically loaded when a table is loaded)
17537 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17538 52 bytes to 32 bytes. There is usually one of these for every
17539 namespace object, so the memory savings is significant.
17541 Implemented just-in-time evaluation of the CreateField operators.
17543 Bug fixes for IA-64 support have been integrated.
17545 Additional code review comments have been implemented
17547 The so-called "third pass parse" has been replaced by a final walk
17548 through the namespace to initialize all operation regions (address
17549 spaces) and fields that have not yet been initialized during the
17550 execution of the various _INI and REG methods.
17552 New file - namespace/nsinit.c
17554 -------------------------------------------
17555 Summary of changes for this label: 09_01_00
17557 Namespace manager data structures have been reworked to change the
17558 primary object from a table to a single object. This has
17559 resulted in dynamic memory savings of 3X within the namespace and
17560 2X overall in the ACPI CA subsystem.
17562 Fixed problem where the call to AcpiEvFindPciRootBuses was
17563 inadvertently left commented out.
17565 Reduced the warning count when generating the source with the GCC
17568 Revision numbers added to each module header showing the
17569 SourceSafe version of the file. Please refer to this version
17570 number when giving us feedback or comments on individual modules.
17572 The main object types within the subsystem have been renamed to
17573 clarify their purpose:
17575 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17576 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17577 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17579 NOTE: no changes to the initialization sequence are included in
17582 -------------------------------------------
17583 Summary of changes for this label: 08_23_00
17585 Fixed problem where TerminateControlMethod was being called
17586 multiple times per method
17588 Fixed debugger problem where single stepping caused a semaphore to
17591 Improved performance through additional parse object caching -
17592 added ACPI_EXTENDED_OP type
17594 -------------------------------------------
17595 Summary of changes for this label: 08_10_00
17597 Parser/Interpreter integration: Eliminated the creation of
17598 complete parse trees for ACPI tables and control methods.
17599 Instead, parse subtrees are created and then deleted as soon as
17600 they are processed (Either entered into the namespace or executed
17601 by the interpreter). This reduces the use of dynamic kernel
17602 memory significantly. (about 10X)
17604 Exception codes broken into classes and renumbered. Be sure to
17605 recompile all code that includes acexcep.h. Hopefully we won't
17606 have to renumber the codes again now that they are split into
17607 classes (environment, programmer, AML code, ACPI table, and
17610 Fixed some additional alignment issues in the Resource Manager
17613 Implemented semaphore tracking in the AcpiExec utility, and fixed
17614 several places where mutexes/semaphores were being unlocked
17615 without a corresponding lock operation. There are no known
17616 semaphore or mutex "leaks" at this time.
17618 Fixed the case where an ASL Return operator is used to return an
17621 -------------------------------------------
17622 Summary of changes for this label: 07_28_00
17624 Fixed a problem with the way addresses were calculated in
17625 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17626 manifested itself when a Field was created with WordAccess or
17627 DwordAccess, but the field unit defined within the Field was less
17629 than a Word or Dword.
17631 Fixed a problem in AmlDumpOperands() module's loop to pull
17632 operands off of the operand stack to display information. The
17633 problem manifested itself as a TLB error on 64-bit systems when
17634 accessing an operand stack with two or more operands.
17636 Fixed a problem with the PCI configuration space handlers where
17637 context was getting confused between accesses. This required a
17638 change to the generic address space handler and address space
17639 setup definitions. Handlers now get both a global handler context
17640 (this is the one passed in by the user when executing
17641 AcpiInstallAddressSpaceHandler() and a specific region context
17642 that is unique to each region (For example, the _ADR, _SEG and
17643 _BBN values associated with a specific region). The generic
17644 function definitions have changed to the following:
17646 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17647 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17648 *HandlerContext, // This used to be void *Context void
17649 *RegionContext); // This is an additional parameter
17651 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17652 RegionHandle, UINT32 Function, void *HandlerContext, void
17653 **RegionContext); // This used to be **ReturnContext
17655 -------------------------------------------
17656 Summary of changes for this label: 07_21_00
17658 Major file consolidation and rename. All files within the
17659 interpreter have been renamed as well as most header files. This
17660 was done to prevent collisions with existing files in the host
17661 OSs -- filenames such as "config.h" and "global.h" seem to be
17662 quite common. The VC project files have been updated. All
17663 makefiles will require modification.
17665 The parser/interpreter integration continues in Phase 5 with the
17666 implementation of a complete 2-pass parse (the AML is parsed
17667 twice) for each table; This avoids the construction of a huge
17668 parse tree and therefore reduces the amount of dynamic memory
17669 required by the subsystem. Greater use of the parse object cache
17670 means that performance is unaffected.
17672 Many comments from the two code reviews have been rolled in.
17674 The 64-bit alignment support is complete.
17676 -------------------------------------------
17677 Summary of changes for this label: 06_30_00
17679 With a nod and a tip of the hat to the technology of yesteryear,
17680 we've added support in the source code for 80 column output
17681 devices. The code is now mostly constrained to 80 columns or
17682 less to support environments and editors that 1) cannot display
17683 or print more than 80 characters on a single line, and 2) cannot
17684 disable line wrapping.
17686 A major restructuring of the namespace data structure has been
17687 completed. The result is 1) cleaner and more
17688 understandable/maintainable code, and 2) a significant reduction
17689 in the dynamic memory requirement for each named ACPI object
17692 -------------------------------------------
17693 Summary of changes for this label: 06_23_00
17695 Linux support has been added. In order to obtain approval to get
17696 the ACPI CA subsystem into the Linux kernel, we've had to make
17697 quite a few changes to the base subsystem that will affect all
17698 users (all the changes are generic and OS- independent). The
17699 effects of these global changes have been somewhat far reaching.
17700 Files have been merged and/or renamed and interfaces have been
17701 renamed. The major changes are described below.
17703 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17704 pollution/confusion within our target kernels. All OSD
17705 interfaces must be modified to match the new naming convention.
17707 Files merged across the subsystem. A number of the smaller source
17708 and header files have been merged to reduce the file count and
17709 increase the density of the existing files. There are too many
17710 to list here. In general, makefiles that call out individual
17711 files will require rebuilding.
17713 Interpreter files renamed. All interpreter files now have the
17714 prefix am* instead of ie* and is*.
17716 Header files renamed: The acapi.h file is now acpixf.h. The
17717 acpiosd.h file is now acpiosxf.h. We are removing references to
17718 the acronym "API" since it is somewhat windowsy. The new name is
17719 "external interface" or xface or xf in the filenames.j
17722 All manifest constants have been forced to upper case (some were
17723 mixed case.) Also, the string "ACPI_" has been prepended to many
17724 (not all) of the constants, typedefs, and structs.
17726 The globals "DebugLevel" and "DebugLayer" have been renamed
17727 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17729 All other globals within the subsystem are now prefixed with
17730 "AcpiGbl_" Internal procedures within the subsystem are now
17731 prefixed with "Acpi" (with only a few exceptions). The original
17732 two-letter abbreviation for the subcomponent remains after "Acpi"
17733 - for example, CmCallocate became AcpiCmCallocate.
17735 Added a source code translation/conversion utility. Used to
17736 generate the Linux source code, it can be modified to generate
17737 other types of source as well. Can also be used to cleanup
17738 existing source by removing extraneous spaces and blank lines.
17739 Found in tools/acpisrc/*
17741 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17742 AcpiOsUnmapMemory. (UnMap became Unmap).
17744 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17745 When set to one, this indicates that the caller wants to use the
17747 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17748 both types. However, implementers of this call may want to use
17749 different OS primitives depending on the type of semaphore
17750 requested. For example, some operating systems provide separate
17752 "mutex" and "semaphore" interfaces - where the mutex interface is
17753 much faster because it doesn't have all the overhead of a full
17754 semaphore implementation.
17756 Fixed a deadlock problem where a method that accesses the PCI
17757 address space can block forever if it is the first access to the
17760 -------------------------------------------
17761 Summary of changes for this label: 06_02_00
17763 Support for environments that cannot handle unaligned data
17764 accesses (e.g. firmware and OS environments devoid of alignment
17765 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17766 been added (via configurable macros) in these three areas: -
17767 Transfer of data from the raw AML byte stream is done via byte
17768 moves instead of word/dword/qword moves. - External objects are
17769 aligned within the user buffer, including package elements (sub-
17770 objects). - Conversion of name strings to UINT32 Acpi Names is now
17773 The Store operator was modified to mimic Microsoft's
17774 implementation when storing to a Buffer Field.
17776 Added a check of the BM_STS bit before entering C3.
17778 The methods subdirectory has been obsoleted and removed. A new
17779 file, cmeval.c subsumes the functionality.
17781 A 16-bit (DOS) version of AcpiExec has been developed. The
17782 makefile is under the acpiexec directory.