1 ----------------------------------------
2 09 February 2018. Summary of changes for version 20180209:
5 1) ACPICA kernel-resident subsystem:
7 Completed the final integration of the recent changes to Package Object
8 handling and the module-level AML code support. This allows forward
9 references from individual package elements when the package object is
10 declared from within module-level code blocks. Provides compatibility
11 with other ACPI implementations.
13 The new architecture for the AML module-level code has been completed and
14 is now the default for the ACPICA code. This new architecture executes
15 the module-level code in-line as the ACPI table is loaded/parsed instead
16 of the previous architecture which deferred this code until after the
17 table was fully loaded. This solves some ASL code ordering issues and
18 provides compatibility with other ACPI implementations. At this time,
19 there is an option to fallback to the earlier architecture, but this
20 support is deprecated and is planned to be completely removed later this
23 Added a compile-time option to ignore AE_NOT_FOUND exceptions during
24 resolution of named reference elements within Package objects. Although
25 this is potentially a serious problem, it can generate a lot of
26 noise/errors on platforms whose firmware carries around a bunch of unused
27 Package objects. To disable these errors, define
28 ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All
29 errors are always reported for ACPICA applications such as AcpiExec.
31 Fixed a regression related to the explicit type-conversion AML operators
32 (ToXXXX). The regression was introduced early in 2017 but was not seen
33 until recently because these operators are not fully supported by other
34 ACPI implementations and are thus rarely used by firmware developers. The
35 operators are defined by the ACPI specification to not implement the
36 "implicit result object conversion". The regression incorrectly
37 introduced this object conversion for the following explicit conversion
48 2) iASL Compiler/Disassembler and Tools:
50 iASL: Fixed a problem with the compiler constant folding feature as
51 related to the ToXXXX explicit conversion operators. These operators do
52 not support the "implicit result object conversion" by definition. Thus,
53 ASL expressions that use these operators cannot be folded to a simple
54 Store operator because Store implements the implicit conversion. This
55 change uses the CopyObject operator for the ToXXXX operator folding
56 instead. CopyObject is defined to not implement implicit result
57 conversions and is thus appropriate for folding the ToXXXX operators.
59 iASL: Changed the severity of an error condition to a simple warning for
60 the case where a symbol is declared both locally and as an external
61 symbol. This accommodates existing ASL code.
63 AcpiExec: The -ep option to enable the new architecture for module-level
64 code has been removed. It is replaced by the -dp option which instead has
65 the opposite effect: it disables the new architecture (the default) and
66 enables the legacy architecture. When the legacy code is removed in the
67 future, the -dp option will be removed also.
69 ----------------------------------------
70 05 January 2018. Summary of changes for version 20180105:
73 1) ACPICA kernel-resident subsystem:
75 Updated all copyrights to 2018. This affects all source code modules.
77 Fixed a possible build error caused by an unresolved reference to the
78 AcpiUtSafeStrncpy function.
80 Removed NULL pointer arithmetic in the various pointer manipulation
81 macros. All "(void *) NULL" constructs are converted to "(void *) 0".
82 This eliminates warnings/errors in newer C compilers. Jung-uk Kim.
84 Added support for A32 ABI compilation, which uses the ILP32 model. Anuj
88 2) iASL Compiler/Disassembler and Tools:
90 ASLTS: Updated all copyrights to 2018.
92 Tools: Updated all signon copyrights to 2018.
94 AcpiXtract: Fixed a regression related to ACPI table signatures where the
95 signature was truncated to 3 characters (instead of 4).
97 AcpiExec: Restore the original terminal mode after the use of the -v and
100 ASLTS: Deployed the iASL __METHOD__ macro across the test suite.
102 ----------------------------------------
103 14 December 2017. Summary of changes for version 20171214:
106 1) ACPICA kernel-resident subsystem:
108 Fixed a regression in the external (public) AcpiEvaluateObjectTyped
109 interface where the optional "pathname" argument had inadvertently become
110 a required argument returning an error if omitted (NULL pointer
113 Fixed two possible memory leaks related to the recently developed "late
114 resolution" of reference objects within ASL Package Object definitions.
116 Added two recently defined _OSI strings: "Windows 2016" and "Windows
117 2017". Mario Limonciello.
119 Implemented and deployed a safer version of the C library function
120 strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the
121 creation of unterminated strings as a possible result of a standard
124 Cleaned up and restructured the global variable file (acglobal.h). There
125 are many changes, but no functional changes.
128 2) iASL Compiler/Disassembler and Tools:
130 iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the
131 optional OemData field at the end of the table was incorrectly required
132 for proper compilation. It is now correctly an optional field.
134 ASLTS: The entire suite was converted from standard ASL to the ASL+
135 language, using the ASL-to-ASL+ converter which is integrated into the
136 iASL compiler. A binary compare of all output files has verified the
137 correctness of the conversion.
139 iASL: Fixed the source code build for platforms where "char" is unsigned.
140 This affected the iASL lexer only. Jung-uk Kim.
142 ----------------------------------------
143 10 November 2017. Summary of changes for version 20171110:
146 1) ACPICA kernel-resident subsystem:
148 This release implements full support for ACPI 6.2A:
149 NFIT - Added a new subtable, "Platform Capabilities Structure"
150 No other changes to ACPICA were required, since ACPI 6.2A is primarily an
151 errata release of the specification.
153 Other ACPI table changes:
154 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo
155 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy
158 Utilities: Modified the string/integer conversion functions to use
159 internal 64-bit divide support instead of a native divide. On 32-bit
160 platforms, a 64-bit divide typically requires a library function which
161 may not be present in the build (kernel or otherwise).
163 Implemented a targeted error message for timeouts returned from the
164 Embedded Controller device driver. This is seen frequently enough to
165 special-case an AE_TIME returned from an EC operation region access:
166 "Timeout from EC hardware or EC device driver"
168 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all
169 runtime error messages have the identical prefix.
172 2) iASL Compiler/Disassembler and Tools:
174 AcpiXtract: Fixed a problem with table header detection within the
175 acpidump file. Processing a table could be ended early if a 0x40 (@)
176 appears in the original binary table, resulting in the @ symbol appearing
177 in the decoded ASCII field at the end of the acpidump text line. The
178 symbol caused acpixtract to incorrectly think it had reached the end of
179 the current table and the beginning of a new table.
181 AcpiXtract: Added an option (-f) to ignore some errors during table
182 extraction. This initial implementation ignores non-ASCII and non-
183 printable characters found in the acpidump text file.
185 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics
186 for ASLTS. This feature is used to track memory allocations from
187 different memory caches within the ACPICA code. At the end of an ASLTS
188 run, these memory statistics are recorded and stored in a log file.
190 Debugger (user-space version): Implemented a simple "Background" command.
191 Creates a new thread to execute a control method in the background, while
192 control returns to the debugger prompt to allow additional commands.
193 Syntax: Background <Namepath> [Arguments]
195 ----------------------------------------
196 29 September 2017. Summary of changes for version 20170929:
199 1) ACPICA kernel-resident subsystem:
201 Redesigned and implemented an improved ASL While() loop timeout
202 mechanism. This mechanism is used to prevent infinite loops in the kernel
203 AML interpreter caused by either non-responsive hardware or incorrect AML
204 code. The new implementation uses AcpiOsGetTimer instead of a simple
205 maximum loop count, and is thus more accurate and constant across
206 different machines. The default timeout is currently 30 seconds, but this
207 may be adjusted later.
209 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to
210 better reflect the new implementation of the loop timeout mechanism.
212 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support
213 and to fix an off-by-one error. Jung-uk Kim.
215 Fixed an EFI build problem by updating the makefiles to for a new file
216 that was added, utstrsuppt.c
219 2) iASL Compiler/Disassembler and Tools:
221 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This
222 includes support in the table disassembler, compiler, and template
225 iASL: Added an exception for an illegal type of recursive method
226 invocation. If a method creates named objects, the first recursive call
227 will fail at runtime. This change adds an error detection at compile time
228 to catch the problem up front. Note: Marking such a method as
229 "serialized" will not help with this problem, because the same thread can
230 acquire the method mutex more than once. Example compiler and runtime
240 Error 6152 - ^ Illegal recursive call to method
241 that creates named objects (MTH1)
243 Previous runtime exception:
244 ACPI Error: [INT1] Namespace lookup failure,
245 AE_ALREADY_EXISTS (20170831/dswload2-465)
247 iASL: Updated support for External() opcodes to improve namespace
248 management and error detection. These changes are related to issues seen
249 with multiple-segment namespace pathnames within External declarations,
252 External(\_SB.PCI0.GFX0, DeviceObj)
253 External(\_SB.PCI0.GFX0.ALSI)
255 iASL: Implemented support for multi-line error/warning messages. This
256 enables more detailed and helpful error messages as below, from the
257 initial deployment for the duplicate names error:
259 DSDT.iiii 1692: Device(PEG2) {
260 Error 6074 - ^ Name already exists in scope
263 Original name creation/declaration below:
264 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj)
266 AcpiXtract: Added additional flexibility to support differing input hex
267 dump formats. Specifically, hex dumps that contain partial disassembly
268 and/or comments within the ACPI table data definition. There exist some
269 dump utilities seen in the field that create this type of hex dump (such
270 as Simics). For example:
272 DSDT @ 0xdfffd0c0 (10999 bytes)
280 Creator_id 1280593481
281 Creator_revision 537399345
282 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00
284 2af0: 5f 4c 30 46 00 a4 01
286 Test suite: Miscellaneous changes/fixes:
287 More cleanup and simplification of makefiles
288 Continue compilation of test cases after a compile failure
289 Do not perform binary compare unless both files actually exist
291 iASL: Performed some code/module restructuring. Moved all memory
292 allocation functions to new modules. Two new files, aslallocate.c and
295 ----------------------------------------
296 31 August 2017. Summary of changes for version 20170831:
299 1) ACPICA kernel-resident subsystem:
301 Implemented internal support for full 64-bit addresses that appear in all
302 Generic Address Structure (GAS) structures. Previously, only the lower 32
303 bits were used. Affects the use of GAS structures in the FADT and other
304 tables, as well as the GAS structures passed to the AcpiRead and
305 AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
307 Added header support for the PDTT ACPI table (Processor Debug Trigger
308 Table). Full support in the iASL Data Table Compiler and disassembler is
312 2) iASL Compiler/Disassembler and Tools:
314 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
315 Properties Topology Table) where a flag bit was specified in the wrong
316 bit position ("Line Size Valid", bit 6).
318 iASL: Implemented support for Octal integer constants as defined by the
319 ASL language grammar, per the ACPI specification. Any integer constant
320 that starts with a zero is an octal constant. For example,
321 Store (037777, Local0) /* Octal constant */
322 Store (0x3FFF, Local0) /* Hex equivalent */
323 Store (16383, Local0) /* Decimal equivalent */
325 iASL: Improved overflow detection for 64-bit string conversions during
326 compilation of integer constants. "Overflow" in this case means a string
327 that represents an integer that is too large to fit into a 64-bit value.
328 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
329 the low-order 32 bits with a warning, as previously implemented. Several
330 new exceptions are defined that indicate a 64-bit overflow, as well as
331 the base (radix) that was used during the attempted conversion. Examples:
332 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
333 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
334 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
336 iASL: Added a warning for the case where a ResourceTemplate is declared
337 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
338 this case, the resulting template is created with a single END_TAG
339 descriptor, which is essentially useless.
341 iASL: Expanded the -vw option (ignore specific warnings/remarks) to
342 include compilation error codes as well.
344 ----------------------------------------
345 28 July 2017. Summary of changes for version 20170728:
348 1) ACPICA kernel-resident subsystem:
350 Fixed a regression seen with small resource descriptors that could cause
351 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
353 AML interpreter: Implemented a new feature that allows forward references
354 from individual named references within package objects that are
355 contained within blocks of "module-level code". This provides
356 compatibility with other ACPI implementations and supports existing
357 firmware that depends on this feature. Example:
360 If (ABCD) /* An If() at module-level */
362 Name (PKG1, Package()
364 INT1 /* Forward reference to object INT1
370 AML Interpreter: Fixed a problem with the Alias() operator where aliases
371 to some ASL objects were not handled properly. Objects affected are:
372 Mutex, Event, and OperationRegion.
374 AML Debugger: Enhanced to properly handle AML Alias objects. These
375 objects have one level of indirection which was not fully supported by
378 Table Manager: Added support to detect and ignore duplicate SSDTs within
379 the XSDT/RSDT. This error in the XSDT has been seen in the field.
381 EFI and EDK2 support:
382 Enabled /WX flag for MSVC builds
383 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
384 Added local support for 64-bit multiply and shift operations
385 Added support to compile acpidump.efi on Windows
386 Added OSL function stubs for interfaces not used under EFI
388 Added additional support for the _DMA predefined name. _DMA returns a
389 buffer containing a resource template. This change add support within the
390 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
391 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
394 2) iASL Compiler/Disassembler and Tools:
396 iASL: Fixed a problem where the internal input line buffer(s) could
397 overflow if there are very long lines in the input ASL source code file.
398 Implemented buffer management that automatically increases the size of
399 the buffers as necessary.
401 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
402 errors. If the specified exception is not raised during compilation, the
403 compiler emits an error. This is intended to support the ASL test suite,
404 but may be useful in other contexts.
406 iASL: Implemented a new predefined macro, __METHOD__, which returns a
407 string containing the name of the current control method that is being
410 iASL: Implemented debugger and table compiler support for the SDEI ACPI
411 table (Software Delegated Exception Interface). James Morse
412 <james.morse@arm.com>
414 Unix/Linux makefiles: Added an option to disable compile optimizations.
415 The disable occurs when the NOOPT flag is set to TRUE.
416 theracermaster@gmail.com
418 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
419 when there are different tables for 32-bit versus 64-bit.
421 Enhanced error reporting for the ASL test suite (ASLTS) by removing
422 unnecessary/verbose text, and emit the actual line number where an error
423 has occurred. These changes are intended to improve the usefulness of the
426 ----------------------------------------
427 29 June 2017. Summary of changes for version 20170629:
430 1) ACPICA kernel-resident subsystem:
432 Tables: Implemented a deferred ACPI table verification. This is useful
433 for operating systems where the tables cannot be verified in the early
434 initialization stage due to early memory mapping limitations on some
435 architectures. Lv Zheng.
437 Tables: Removed the signature validation for dynamically loaded tables.
438 Provides compatibility with other ACPI implementations. Previously, only
439 SSDT tables were allowed, as per the ACPI specification. Now, any table
440 signature can be used via the Load() operator. Lv Zheng.
442 Tables: Fixed several mutex issues that could cause errors during table
443 acquisition. Lv Zheng.
445 Tables: Fixed a problem where an ACPI warning could be generated if a
446 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
448 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
449 AcpiPutTable interfaces. This applies to the "late stage" table loading
450 when the use of AcpiPutTable is no longer required (since the system
451 memory manager is fully running and available). Lv Zheng.
453 Fixed/Reverted a regression during processing of resource descriptors
454 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
455 exception in this case.
457 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
458 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
460 Interpreter: Fixed a possible fault if an Alias operator with an invalid
461 or duplicate target is encountered during Alias creation in
462 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
464 Added an option to use designated initializers for function pointers.
465 Kees Cook <keescook@google.com>
468 2) iASL Compiler/Disassembler and Tools:
470 iASL: Allow compilation of External declarations with target pathnames
471 that refer to existing named objects within the table. Erik Schmauss.
473 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
474 FieldUnit name also is declared via External in the same table. Erik
477 iASL: Allow existing scope names within pathnames used in External
478 statements. For example:
479 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
482 iASL: IORT ACPI table: Implemented changes required to decode the new
483 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
484 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
486 Disassembler: Don't abort disassembly on errors from External()
487 statements. Erik Schmauss.
489 Disassembler: fixed a possible fault when one of the Create*Field
490 operators references a Resource Template. ACPICA Bugzilla 1396.
492 iASL: In the source code, resolved some naming inconsistences across the
493 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
494 Adds a new file, aslparseop.c
496 ----------------------------------------
497 31 May 2017. Summary of changes for version 20170531:
502 The ACPI specification version 6.2 has been released and is available at
503 http://uefi.org/specifications
505 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
506 are summarized below.
508 New ACPI tables (Table Compiler/Disassembler/Templates):
509 HMAT (Heterogeneous Memory Attributes Table)
510 WSMT (Windows SMM Security Mitigation Table)
511 PPTT (Processor Properties Topology Table)
513 New subtables for existing ACPI tables:
514 HEST (New subtable, Arch-deferred machine check)
515 SRAT (New subtable, Arch-specific affinity structure)
516 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
518 Simple updates for existing ACPI tables:
519 BGRT (two new flag bits)
520 HEST (New bit defined for several subtables, GHES_ASSIST)
522 New Resource Descriptors and Resource macros (Compiler/Disassembler):
528 New type for hardware error notification (section 18.3.2.9)
530 New predefined names/methods (Compiler/Interpreter):
531 _HMA (Heterogeneous Memory Attributes)
532 _LSI (Label Storage Information)
533 _LSR (Label Storage Read)
534 _LSW (Label Storage Write)
536 ASL grammar/macro changes (Compiler):
537 For() ASL macro, implemented with the AML while operator
538 Extensions to Concatenate operator
539 Support for multiple definition blocks in same ASL file
540 Clarification for Buffer operator
541 Allow executable AML code underneath all scopes (Devices, etc.)
542 Clarification/change for the _OSI return value
543 ASL grammar update for reference operators
544 Allow a zero-length string for AML filename in DefinitionBlock
547 New device object notification value
548 Remove a notify value (0x0C) for graceful shutdown
549 New UUIDs for processor/cache properties and
550 physical package property
551 New _HID, ACPI0014 (Wireless Power Calibration Device)
554 1) ACPICA kernel-resident subsystem:
556 Added support to disable ACPI events on hardware-reduced platforms.
557 Eliminates error messages of the form "Could not enable fixed event". Lv
560 Fixed a problem using Device/Thermal objects with the ObjectType and
561 DerefOf ASL operators. This support had not been fully/properly
564 Fixed a problem where if a Buffer object containing a resource template
565 was longer than the actual resource template, an error was generated --
566 even though the AML is legal. This case has been seen in the field.
568 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
569 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
571 Added header file changes for the TPM2 ACPI table. Update to new version
572 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
574 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
575 These interfaces are intended to be used only in conjunction with the
576 predefined _DLM method (Device Lock Method). "This object appears in a
577 device scope when AML access to the device must be synchronized with the
580 Example Code and Data Size: These are the sizes for the OS-independent
581 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
582 debug version of the code includes the debug output trace mechanism and
583 has a much larger code and data size.
586 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
587 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
589 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
590 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
593 2) iASL Compiler/Disassembler and Tools:
595 iASL: Fixed a problem where an External() declaration could not refer to
596 a Field Unit. Erik Schmauss.
598 Disassembler: Improved support for the Switch/Case operators. This
599 feature will disassemble AML code back to the original Switch operators
600 when possible, instead of an If..Else sequence. David Box
602 iASL and disassembler: Improved the handling of multiple extraneous
603 parentheses for both ASL input and disassembled ASL output.
605 Improved the behavior of the iASL compiler and disassembler to detect
606 improper use of external declarations
608 Disassembler: Now aborts immediately upon detection of an unknown AML
609 opcode. The AML parser has no real way to recover from this, and can
610 result in the creation of an ill-formed parse tree that causes errors
611 later during the disassembly.
613 All tools: Fixed a problem where the Unix application OSL did not handle
614 control-c correctly. For example, a control-c could incorrectly wake the
617 AcpiExec: Improved the Control-C handling and added a handler for
618 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
621 Reduced the verbosity of the generic unix makefiles. Previously, each
622 compilation displayed the full set of compiler options. This has been
623 eliminated as the options are easily inspected within the makefiles. Each
624 compilation now results in a single line of output.
626 ----------------------------------------
627 03 March 2017. Summary of changes for version 20170303:
632 The licensing information at the start of each source code module has
633 been updated. In addition to the Intel license, the dual GPLv2/BSD
634 license has been added for completeness. Now, a single version of the
635 source code should be suitable for all ACPICA customers. This is the
636 major change for this release since it affects all source code modules.
639 1) ACPICA kernel-resident subsystem:
641 Fixed two issues with the common asltypes.h header that could cause
642 problems in some environments: (Kim Jung-uk)
643 Removed typedef for YY_BUFFER_STATE ?
644 Fixes an error with earlier versions of Flex.
645 Removed use of FILE typedef (which is only defined in stdio.h)
648 2) iASL Compiler/Disassembler and Tools:
650 Disassembler: fixed a regression introduced in 20170224. A fix for a
651 memory leak related to resource descriptor tags (names) could fault when
652 the disassembler was generated with 64-bit compilers.
654 The ASLTS test suite has been updated to implement a new testing
655 architecture. During generation of the suite from ASL source, both the
656 ASL and ASL+ compilers are now validated, as well as the disassembler
657 itself (Erik Schmauss). The architecture executes as follows:
659 For every ASL source module:
660 Compile (legacy ASL compilation)
661 Disassemble the resulting AML to ASL+ source code
662 Compile the new ASL+ module
663 Perform a binary compare on the legacy AML and the new ASL+ AML
664 The ASLTS suite then executes normally using the AML binaries.
666 ----------------------------------------
667 24 February 2017. Summary of changes for version 20170224:
670 1) ACPICA kernel-resident subsystem:
672 Interpreter: Fixed two issues with the control method return value auto-
673 repair feature, where an attempt to double-delete an internal object
674 could result in an ACPICA warning (for _CID repair and others). No fault
675 occurs, however, because the attempted deletion (actually a release to an
676 internal cache) is detected and ignored via object poisoning.
678 Debugger: Fixed an AML interpreter mutex issue during the single stepping
679 of control methods. If certain debugger commands are executed during
680 stepping, a mutex aquire/release error could occur. Lv Zheng.
682 Fixed some issues generating ACPICA with the Intel C compiler by
683 restoring the original behavior and compiler-specific include file in
686 Example Code and Data Size: These are the sizes for the OS-independent
687 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
688 debug version of the code includes the debug output trace mechanism and
689 has a much larger code and data size.
692 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
693 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
695 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
696 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
699 2) iASL Compiler/Disassembler and Tools:
701 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
702 tool has been designed, implemented, and included in this release. The
703 key feature of this utility is that the original comments within the
704 input ASL file are preserved during the conversion process, and included
705 within the converted ASL+ file -- thus creating a transparent conversion
706 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
708 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
711 iASL/Disassembler: Improved the detection and correct disassembly of
712 Switch/Case operators. This feature detects sequences of if/elseif/else
713 operators that originated from ASL Switch/Case/Default operators and
714 emits the original operators. David Box.
716 iASL: Improved the IORT ACPI table support in the following areas. Lv
718 Clear MappingOffset if the MappingCount is zero.
719 Fix the disassembly of the SMMU GSU interrupt offset.
720 Update the template file for the IORT table.
722 Disassembler: Enhanced the detection and disassembly of resource
723 template/descriptor within a Buffer object. An EndTag descriptor is now
724 required to have a zero second byte, since all known ASL compilers emit
725 this. This helps eliminate incorrect decisions when a buffer is
726 disassembled (false positives on resource templates).
728 ----------------------------------------
729 19 January 2017. Summary of changes for version 20170119:
732 1) General ACPICA software:
734 Entire source code base: Added the 2017 copyright to all source code
735 legal/licensing module headers and utility/tool signons. This includes
736 the standard Linux dual-license header. This affects virtually every file
737 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
738 the ACPICA test suite.
741 2) iASL Compiler/Disassembler and Tools:
743 iASL: Removed/fixed an inadvertent remark when a method argument
744 containing a reference is used as a target operand within the method (and
745 never used as a simple argument), as in the example below. Jeffrey Hugo.
747 dsdt.asl 1507: Store(0x1, Arg0)
748 Remark 2146 - ^ Method Argument is never used (Arg0)
750 All tools: Removed the bit width of the compiler that generated the tool
751 from the common signon for all user space tools. This proved to be
752 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
753 from the generic makefiles (Thomas Petazzoni). Example below.
756 ASL+ Optimizing Compiler version 20170119-32
757 ASL+ Optimizing Compiler version 20170119-64
760 ASL+ Optimizing Compiler version 20170119
762 ----------------------------------------
763 22 December 2016. Summary of changes for version 20161222:
766 1) ACPICA kernel-resident subsystem:
768 AML Debugger: Implemented a new mechanism to simplify and enhance
769 debugger integration into all environments, including kernel debuggers
770 and user-space utilities, as well as remote debug services. This
771 mechanism essentially consists of new OSL interfaces to support debugger
772 initialization/termination, as well as wait/notify interfaces to perform
773 the debugger handshake with the host. Lv Zheng.
776 AcpiOsInitializeDebugger (void)
777 AcpiOsTerminateDebugger (void)
778 AcpiOsWaitCommandReady (void)
779 AcpiOsNotifyCommandComplete (void)
781 New OS services layer:
782 osgendbg.c -- Example implementation, and used for AcpiExec
784 Update for Generic Address Space (GAS) support: Although the AccessWidth
785 and/or BitOffset fields of the GAS are not often used, this change now
786 fully supports these fields. This affects the internal support for FADT
787 registers, registers in other ACPI data tables, and the AcpiRead and
788 AcpiWrite public interfaces. Lv Zheng.
790 Sleep support: In order to simplify integration of ACPI sleep for the
791 various host operating systems, a new OSL interface has been introduced.
792 AcpiOsEnterSleep allows the host to perform any required operations
793 before the final write to the sleep control register(s) is performed by
797 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
799 Called from these internal interfaces:
803 EFI support: Added a very small EFI/ACPICA example application. Provides
804 a simple demo for EFI integration, as well as assisting with resolution
805 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
807 source/tools/efihello/efihello.c
809 Local C library: Implemented several new functions to enhance ACPICA
810 portability, for environments where these clib functions are not
811 available (such as EFI). Lv Zheng:
818 Fixed a regression where occasionally a valid resource descriptor was
819 incorrectly detected as invalid at runtime, and a
820 AE_AML_NO_RESOURCE_END_TAG was returned.
822 Fixed a problem with the recently implemented support that enables
823 control method invocations as Target operands to many ASL operators.
824 Warnings of this form: "Needed type [Reference], found [Processor]" were
825 seen at runtime for some method invocations.
827 Example Code and Data Size: These are the sizes for the OS-independent
828 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
829 debug version of the code includes the debug output trace mechanism and
830 has a much larger code and data size.
833 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
834 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
836 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
837 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
840 2) iASL Compiler/Disassembler and Tools:
842 Disassembler: Enhanced output by adding the capability to detect and
843 disassemble ASL Switch/Case statements back to the original ASL source
844 code instead of if/else blocks. David Box.
846 AcpiHelp: Split a large file into separate files based upon
847 functionality/purpose. New files are:
851 ----------------------------------------
852 17 November 2016. Summary of changes for version 20161117:
855 1) ACPICA kernel-resident subsystem:
857 Table Manager: Fixed a regression introduced in 20160729, "FADT support
858 cleanup". This was an attempt to remove all references in the source to
859 the FADT version 2, which never was a legal version number. It was
860 skipped because it was an early version of 64-bit support that was
861 eventually abandoned for the current 64-bit support.
863 Interpreter: Fixed a problem where runtime implicit conversion was
864 incorrectly disabled for the ASL operators below. This brings the
865 behavior into compliance with the ACPI specification:
873 Table Manager: Added a new public interface, AcpiPutTable, used to
874 release and free an ACPI table returned by AcpiGetTable and related
875 interfaces. Lv Zheng.
877 Example Code and Data Size: These are the sizes for the OS-independent
878 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
879 debug version of the code includes the debug output trace mechanism and
880 has a much larger code and data size.
883 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
884 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
886 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
887 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
890 2) iASL Compiler/Disassembler and Tools:
892 Disassembler: Fixed a regression for disassembly of Resource Template.
893 Detection of templates in the AML stream missed some types of templates.
895 iASL: Fixed a problem where an Access Size error was returned for the PCC
896 address space when the AccessSize of the GAS register is greater than a
899 iASL: Implemented several grammar changes for the operators below. These
900 changes are slated for the next version of the ACPI specification:
901 RefOf - Disallow method invocation as an operand
902 CondRefOf - Disallow method invocation as an operand
903 DerefOf - Disallow operands that use the result from operators
905 do not return a reference (Changed TermArg to
908 iASL: Control method invocations are now allowed for Target operands, as
909 per the ACPI specification. Removed error for using a control method
910 invocation as a Target operand.
912 Disassembler: Improved detection of Resource Templates, Unicode, and
913 Strings within Buffer objects. These subtypes do not contain a specific
914 opcode to indicate the originating ASL code, and they must be detected by
915 other means within the disassembler.
917 iASL: Implemented an optimization improvement for 32-bit ACPI tables
918 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
919 only after 64-bit to 32-bit truncation. A truncation warning message is
920 still emitted, however.
922 AcpiXtract: Implemented handling for both types of line terminators (LF
923 or CR/LF) so that it can accept AcpiDump output files from any system.
926 AcpiBin: Added two new options for comparing AML files:
927 -a: compare and display ALL mismatches
928 -o: start compare at this offset into the second file
930 ----------------------------------------
931 30 September 2016. Summary of changes for version 20160930:
934 1) ACPICA kernel-resident subsystem:
936 Fixed a regression in the internal AcpiTbFindTable function where a non
937 AE_OK exception could inadvertently be returned even if the function did
938 not fail. This problem affects the following operators:
942 Fixed a regression in the LoadTable operator where a load to any
943 namespace location other than the root no longer worked properly.
945 Increased the maximum loop count value that will result in the
946 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
947 prevent infinite loops within the AML interpreter and thus the host OS
948 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
951 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
952 acpixf.h file. This allows hosts to easily configure the maximum loop
955 Removed an illegal character in the strtoul64.c file. This character
956 caused errors with some C compilers.
958 Example Code and Data Size: These are the sizes for the OS-independent
959 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
960 debug version of the code includes the debug output trace mechanism and
961 has a much larger code and data size.
964 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
965 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
967 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
968 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
971 2) iASL Compiler/Disassembler and Tools:
973 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
974 the simpler ASL ElseIf keyword. During the conversion, a trailing If
975 block could be lost and missing from the disassembled output.
977 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
978 the missing rule caused a parse error when using the Index operator as an
979 operand to ObjectType. This construct now compiles properly. Example:
982 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
983 option). Previously, unresolved symbols could cause a protection fault.
984 Such symbols are now marked as unresolved in the map file.
986 iASL: Implemented support to allow control method invocations as an
987 operand to the ASL DeRefOf operator. Example:
988 DeRefOf(MTH1(Local0))
990 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
991 possible _PLD buffer now includes examination of both the normal buffer
992 length (16 or 20) as well as the surrounding AML package length.
994 Disassembler: Fixed a problem with the decoding of complex expressions
995 within the Divide operator for ASL+. For the case where both the quotient
996 and remainder targets are specified, the entire statement cannot be
997 disassembled. Previously, the output incorrectly contained a mix of ASL-
998 and ASL+ operators. This mixed statement causes a syntax error when
1000 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
1002 Divide (INT1 + 6, 128, RSLT, QUOT)
1004 iASL/Tools: Added support to process AML and non-AML ACPI tables
1005 consistently. For the disassembler and AcpiExec, allow all types of ACPI
1006 tables (AML and data tables). For the iASL -e option, allow only AML
1009 ----------------------------------------
1010 31 August 2016. Summary of changes for version 20160831:
1013 1) ACPICA kernel-resident subsystem:
1015 Improve support for the so-called "module-level code", which is defined
1016 to be math, logical and control AML opcodes that appear outside of any
1017 control method. This change improves the support by adding more opcodes
1018 that can be executed in the manner. Some other issues have been solved,
1019 and the ASL grammar changes to support such code under all scope
1020 operators (Device, etc.) are complete. Lv Zheng.
1022 UEFI support: these OSL functions have been implemented. This is an
1023 additional step toward supporting the AcpiExec utility natively (with
1024 full hardware access) under UEFI. Marcelo Ferreira.
1025 AcpiOsReadPciConfiguration
1026 AcpiOsWritePciConfiguration
1028 Fixed a possible mutex error during control method auto-serialization. Lv
1031 Updated support for the Generic Address Structure by fully implementing
1032 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
1035 Updated the return value for the internal _OSI method. Instead of
1036 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
1037 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
1038 implementations, and will be reflected and clarified in the next version
1039 of the ACPI specification.
1041 Implemented two new table events that can be passed to an ACPICA table
1042 handler. These events are used to indicate a table installation or
1043 uninstallation. These events are used in addition to existed table load
1044 and unload events. Lv Zheng.
1046 Implemented a cleanup for all internal string-to-integer conversions.
1047 Consolidate multiple versions of this functionality and limit possible
1048 bases to either 10 or 16 to simplify the code. Adds a new file,
1051 Cleanup the inclusion order of the various compiler-specific headers.
1052 This simplifies build configuration management. The compiler-specific
1053 headers are now split out from the host-specific headers. Lv Zheng.
1055 Example Code and Data Size: These are the sizes for the OS-independent
1056 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1057 debug version of the code includes the debug output trace mechanism and
1058 has a much larger code and data size.
1061 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
1062 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1065 2) iASL Compiler/Disassembler and Tools:
1067 iASL/AcpiExec: Added a command line option to display the build date/time
1068 of the tool (-vd). This can be useful to verify that the correct version
1069 of the tools are being used.
1071 AML Debugger: Implemented a new subcommand ("execute predef") to execute
1072 all predefined control methods and names within the current namespace.
1073 This can be useful for debugging problems with ACPI tables and the ACPI
1076 ----------------------------------------
1077 29 July 2016. Summary of changes for version 20160729:
1080 1) ACPICA kernel-resident subsystem:
1082 Implemented basic UEFI support for the various ACPICA tools. This
1084 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
1085 2) Support to obtain the ACPI tables on UEFI.
1086 3) Local implementation of required C library functions not available on
1088 4) A front-end (main) function for the tools for UEFI-related
1091 The initial deployment of this support is the AcpiDump utility executing
1092 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
1093 Current environments supported are Linux/Unix. MSVC generation is not
1094 supported at this time. See the generate/efi/README file for build
1095 instructions. Lv Zheng.
1097 Future plans include porting the AcpiExec utility to execute natively on
1098 the platform with I/O and memory access. This will allow viewing/dump of
1099 the platform namespace and native execution of ACPI control methods that
1100 access the actual hardware. To fully implement this support, the OSL
1101 functions below must be implemented with UEFI interfaces. Any community
1102 help in the implementation of these functions would be appreciated:
1107 AcpiOsReadPciConfiguration
1108 AcpiOsWritePciConfiguration
1110 Restructured and standardized the C library configuration for ACPICA,
1111 resulting in the various configuration options below. This includes a
1112 global restructuring of the compiler-dependent and platform-dependent
1113 include files. These changes may affect the existing platform-dependent
1114 configuration files on some hosts. Lv Zheng.
1116 The current C library configuration options appear below. For any issues,
1117 it may be helpful to examine the existing compiler-dependent and
1118 platform-dependent files as examples. Lv Zheng.
1121 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1123 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1124 2) Unix/Windows/BSD applications:
1125 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
1127 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1128 3) UEFI applications:
1129 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1131 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
1132 4) UEFI applications (EDK2/StdLib):
1133 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
1134 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
1137 AML interpreter: "module-level code" support. Allows for execution of so-
1138 called "executable" AML code (math/logical operations, etc.) outside of
1139 control methods not just at the module level (top level) but also within
1140 any scope declared outside of a control method - Scope{}, Device{},
1141 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
1143 Simplified the configuration of the "maximum AML loops" global option by
1144 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
1145 modified at runtime.
1148 Example Code and Data Size: These are the sizes for the OS-independent
1149 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1150 debug version of the code includes the debug output trace mechanism and
1151 has a much larger code and data size.
1154 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
1155 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
1158 2) iASL Compiler/Disassembler and Tools:
1160 iASL: Add full support for the RASF ACPI table (RAS Features Table).
1161 Includes disassembler, data table compiler, and header support.
1163 iASL Expand "module-level code" support. Allows for
1164 compilation/disassembly of so-called "executable" AML code (math/logical
1165 operations, etc.) outside of control methods not just at the module level
1166 (top level) but also within any scope declared outside of a control
1167 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
1170 AcpiDump: Added support for dumping all SSDTs on newer versions of
1171 Windows. These tables are now easily available -- SSDTs are not available
1172 through the registry on older versions.
1174 ----------------------------------------
1175 27 May 2016. Summary of changes for version 20160527:
1178 1) ACPICA kernel-resident subsystem:
1180 Temporarily reverted the new arbitrary bit length/alignment support in
1181 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
1182 a number of regressions with the new code that need to be fully resolved
1183 and tested before this support can be finally integrated into ACPICA.
1184 Apologies for any inconveniences these issues may have caused.
1186 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
1187 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
1188 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
1190 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
1191 option. Adds a new return macro, return_STR. Junk-uk Kim.
1193 Example Code and Data Size: These are the sizes for the OS-independent
1194 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1195 debug version of the code includes the debug output trace mechanism and
1196 has a much larger code and data size.
1199 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
1200 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1202 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1203 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
1205 ----------------------------------------
1206 22 April 2016. Summary of changes for version 20160422:
1208 1) ACPICA kernel-resident subsystem:
1210 Fixed a regression in the GAS (generic address structure) arbitrary bit
1211 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
1212 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
1214 ACPI 6.0: Added support for new/renamed resource macros. One new argument
1215 was added to each of these macros, and the original name has been
1216 deprecated. The AML disassembler will always disassemble to the new
1217 names. Support for the new macros was added to iASL, disassembler,
1218 resource manager, and the acpihelp utility. ACPICA BZ 1274.
1220 I2cSerialBus -> I2cSerialBusV2
1221 SpiSerialBus -> SpiSerialBusV2
1222 UartSerialBus -> UartSerialBusV2
1224 ACPI 6.0: Added support for a new integer field that was appended to the
1225 package object returned by the _BIX method. This adds iASL compile-time
1226 and AML runtime error checking. ACPICA BZ 1273.
1228 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
1229 Subspace Type2" (Headers, Disassembler, and data table compiler).
1231 Example Code and Data Size: These are the sizes for the OS-independent
1232 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1233 debug version of the code includes the debug output trace mechanism and
1234 has a much larger code and data size.
1237 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1238 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1240 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1241 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1244 2) iASL Compiler/Disassembler and Tools:
1246 iASL: Implemented an ASL grammar extension to allow/enable executable
1247 "module-level code" to be created and executed under the various
1248 operators that create new scopes. This type of AML code is already
1249 supported in all known AML interpreters, and the grammar change will
1250 appear in the next version of the ACPI specification. Simplifies the
1251 conditional runtime creation of named objects under these object types:
1259 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
1260 ease-of-use to the ASL language. The syntax is similar to the
1261 corresponding C operator, and is implemented with the existing AML While
1262 opcode -- thus requiring no changes to existing AML interpreters.
1264 For (Initialize, Predicate, Update) {TermList}
1269 Initializer // Nothing | TermArg => ComputationalData
1270 Predicate // Nothing | TermArg => ComputationalData
1271 Update // Nothing | TermArg => ComputationalData
1275 iASL: The _HID/_ADR detection and validation has been enhanced to search
1276 under conditionals in order to allow these objects to be conditionally
1279 iASL: Fixed several issues with the constant folding feature. The
1280 improvement allows better detection and resolution of statements that can
1281 be folded at compile time. ACPICA BZ 1266.
1283 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
1284 conversion to the ASL ElseIf operator where incorrect ASL code could be
1287 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
1288 sometimes an extra (and extraneous) set of parentheses were emitted for
1289 some combinations of operators. Although this did not cause any problems
1290 with recompilation of the disassembled code, it made the code more
1291 difficult to read. David Box. ACPICA BZ 1231.
1293 iASL: Changed to ignore the unreferenced detection for predefined names
1294 of resource descriptor elements, when the resource descriptor is
1295 created/defined within a control method.
1297 iASL: Disassembler: Fix a possible fault with externally declared Buffer
1300 ----------------------------------------
1301 18 March 2016. Summary of changes for version 20160318:
1303 1) ACPICA kernel-resident subsystem:
1305 Added support for arbitrary bit lengths and bit offsets for registers
1306 defined by the Generic Address Structure. Previously, only aligned bit
1307 lengths of 8/16/32/64 were supported. This was sufficient for many years,
1308 but recently some machines have been seen that require arbitrary bit-
1309 level support. ACPICA BZ 1240. Lv Zheng.
1311 Fixed an issue where the \_SB._INI method sometimes must be evaluated
1312 before any _REG methods are evaluated. Lv Zheng.
1314 Implemented several changes related to ACPI table support
1315 (Headers/Disassembler/TableCompiler):
1316 NFIT: For ACPI 6.1, updated to add some additional new fields and
1318 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
1320 DMAR: Added new constants per the 10/2014 DMAR spec.
1321 IORT: Added new subtable per the 10/2015 IORT spec.
1322 HEST: For ACPI 6.1, added new constants and new subtable.
1323 DBG2: Added new constants per the 12/2015 DBG2 spec.
1324 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
1326 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
1328 Updated header support for the DMAR table to match the current version of
1331 Added extensions to the ASL Concatenate operator to allow any ACPI object
1332 to be passed as an operand. Any object other than Integer/String/Buffer
1333 simply returns a string containing the object type. This extends the
1334 usefulness of the Printf macros. Previously, Concatenate would abort the
1335 control method if a non-data object was encountered.
1337 ACPICA source code: Deployed the C "const" keyword across the source code
1338 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
1340 Example Code and Data Size: These are the sizes for the OS-independent
1341 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1342 debug version of the code includes the debug output trace mechanism and
1343 has a much larger code and data size.
1346 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1347 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1349 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1350 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1353 2) iASL Compiler/Disassembler and Tools:
1355 iASL/Disassembler: Improved the heuristic used to determine the number of
1356 arguments for an externally defined control method (a method in another
1357 table). Although this is an improvement, there is no deterministic way to
1358 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1359 will completely solve this problem as it is deployed (automatically) in
1362 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1363 statements that could cause errors when the disassembled file is
1364 compiled. ACPICA BZ 1243. David Box.
1366 iASL: Fixed a regression caused by the merger of the two versions of the
1367 local strtoul64. Because of a dependency on a global variable, strtoul64
1368 could return an error for integers greater than a 32-bit value. ACPICA BZ
1371 iASL: Fixed a regression where a fault could occur for an ASL Return
1372 statement if it invokes a control method that is not resolved. ACPICA BZ
1375 AcpiXtract: Improved input file validation: detection of binary files and
1376 non-acpidump text files.
1378 ----------------------------------------
1379 12 February 2016. Summary of changes for version 20160212:
1381 1) ACPICA kernel-resident subsystem:
1383 Implemented full support for the ACPI 6.1 specification (released in
1384 January). This version of the specification is available at:
1385 http://www.uefi.org/specifications
1387 Only a relatively small number of changes were required in ACPICA to
1388 support ACPI 6.1, in these areas:
1389 - New predefined names
1391 - A new subtable for HEST
1392 - A few other header changes for new values
1394 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1395 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1397 Reverted a change made in version 20151218 which enabled method
1398 invocations to be targets of various ASL operators (SuperName and Target
1399 grammar elements). While the new behavior is supported by the ACPI
1400 specification, other AML interpreters do not support this behavior and
1401 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1402 this support. Therefore, the change was reverted to the original ACPICA
1405 ACPICA now supports the GCC 6 compiler.
1407 Current Release: (Note: build changes increased sizes)
1408 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1409 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1411 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1412 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1415 2) iASL Compiler/Disassembler and Tools:
1417 Completed full support for the ACPI 6.0 External() AML opcode. The
1418 compiler emits an external AML opcode for each ASL External statement.
1419 This opcode is used by the disassembler to assist with the disassembly of
1420 external control methods by specifying the required number of arguments
1421 for the method. AML interpreters do not use this opcode. To ensure that
1422 interpreters do not even see the opcode, a block of one or more external
1423 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1424 commonly deployed in BIOS code, the ability of disassemblers to correctly
1425 disassemble AML code will be greatly improved. David Box.
1427 iASL: Implemented support for an optional cross-reference output file.
1428 The -lx option will create a the cross-reference file with the suffix
1429 "xrf". Three different types of cross-reference are created in this file:
1430 - List of object references made from within each control method
1431 - Invocation (caller) list for each user-defined control method
1432 - List of references to each non-method object in the namespace
1434 iASL: Method invocations as ASL Target operands are now disallowed and
1435 flagged as errors in preparation for ACPI 6.2 (see the description of the
1438 ----------------------------------------
1439 8 January 2016. Summary of changes for version 20160108:
1441 1) ACPICA kernel-resident subsystem:
1443 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1444 copyright to all source code module headers and utility/tool signons.
1445 This includes the standard Linux dual-license header. This affects
1446 virtually every file in the ACPICA core subsystem, iASL compiler, all
1447 ACPICA utilities, and the ACPICA test suite.
1449 Fixed a regression introduced in version 20151218 concerning the
1450 execution of so-called module-level ASL/AML code. Namespace objects
1451 created under a module-level If() construct were not properly/fully
1452 entered into the namespace and could cause an interpreter fault when
1455 Example Code and Data Size: These are the sizes for the OS-independent
1456 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1457 debug version of the code includes the debug output trace mechanism and
1458 has a much larger code and data size.
1461 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1462 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1464 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1465 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1468 2) iASL Compiler/Disassembler and Tools:
1470 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1471 descriptors. The _PIN field name was incorrectly defined to be an array
1472 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1473 would cause incorrect bit width warnings when using Word (16-bit) fields
1474 to access the descriptors.
1477 ----------------------------------------
1478 18 December 2015. Summary of changes for version 20151218:
1480 1) ACPICA kernel-resident subsystem:
1482 Implemented per-AML-table execution of "module-level code" as individual
1483 ACPI tables are loaded into the namespace during ACPICA initialization.
1484 In other words, any module-level code within an AML table is executed
1485 immediately after the table is loaded, instead of batched and executed
1486 after all of the tables have been loaded. This provides compatibility
1487 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1490 To fully support the feature above, the default operation region handlers
1491 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1492 installed before any ACPI tables are loaded. This enables module-level
1493 code to access these address spaces during the table load and module-
1494 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1497 Implemented several changes to the internal _REG support in conjunction
1498 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1499 utilities for the changes above. Although these tools were changed, host
1500 operating systems that simply use the default handlers for SystemMemory,
1501 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1503 For example, in the code below, DEV1 is conditionally added to the
1504 namespace by the DSDT via module-level code that accesses an operation
1505 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1506 created immediately after the DSDT is loaded in order for the SSDT to
1507 successfully reference DEV1. Previously, this code would cause an
1508 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1509 fully supported by ACPICA.
1511 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1513 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1514 Field (OPR1, AnyAcc, NoLock, Preserve)
1525 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1527 External (\DEV1, DeviceObj)
1533 Fixed an AML interpreter problem where control method invocations were
1534 not handled correctly when the invocation was itself a SuperName argument
1535 to another ASL operator. In these cases, the method was not invoked.
1536 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1541 Decrement, Increment
1544 Signal, Release, Reset
1547 Implemented automatic String-to-ObjectReference conversion support for
1548 packages returned by predefined names (such as _DEP). A common BIOS error
1549 is to add double quotes around an ObjectReference namepath, which turns
1550 the reference into an unexpected string object. This support detects the
1551 problem and corrects it before the package is returned to the caller that
1552 invoked the method. Lv Zheng.
1554 Implemented extensions to the Concatenate operator. Concatenate now
1555 accepts any type of object, it is not restricted to simply
1556 Integer/String/Buffer. For objects other than these 3 basic data types,
1557 the argument is treated as a string containing the name of the object
1558 type. This expands the utility of Concatenate and the Printf/Fprintf
1559 macros. ACPICA BZ 1222.
1561 Cleaned up the output of the ASL Debug object. The timer() value is now
1562 optional and no longer emitted by default. Also, the basic data types of
1563 Integer/String/Buffer are simply emitted as their values, without a data
1564 type string -- since the data type is obvious from the output. ACPICA BZ
1567 Example Code and Data Size: These are the sizes for the OS-independent
1568 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1569 debug version of the code includes the debug output trace mechanism and
1570 has a much larger code and data size.
1573 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1574 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1576 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1577 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1580 2) iASL Compiler/Disassembler and Tools:
1582 iASL: Fixed some issues with the ASL Include() operator. This operator
1583 was incorrectly defined in the iASL parser rules, causing a new scope to
1584 be opened for the code within the include file. This could lead to
1585 several issues, including allowing ASL code that is technically illegal
1586 and not supported by AML interpreters. Note, this does not affect the
1587 related #include preprocessor operator. ACPICA BZ 1212.
1589 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1590 operator is essentially an ASL macro since there is no AML opcode
1591 associated with it. The code emitted by the iASL compiler for ElseIf is
1592 an Else opcode followed immediately by an If opcode. The disassembler
1593 will now emit an ElseIf if it finds an Else immediately followed by an
1594 If. This simplifies the decoded ASL, especially for deeply nested
1595 If..Else and large Switch constructs. Thus, the disassembled code more
1596 closely follows the original source ASL. ACPICA BZ 1211. Example:
1608 ElseIf (Arg0 == 0x02)
1613 AcpiExec: Added support for the new module level code behavior and the
1614 early region installation. This required a small change to the
1615 initialization, since AcpiExec must install its own operation region
1618 AcpiExec: Added support to make the debug object timer optional. Default
1619 is timer disabled. This cleans up the debug object output -- the timer
1620 data is rarely used.
1622 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1623 appear on the command line. This can be important when there are
1624 interdependencies/references between the tables.
1626 iASL/Templates. Add support to generate template files with multiple
1627 SSDTs within a single output file. Also added ommand line support to
1628 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1632 ----------------------------------------
1633 24 November 2015. Summary of changes for version 20151124:
1635 1) ACPICA kernel-resident subsystem:
1637 Fixed a possible regression for a previous update to FADT handling. The
1638 FADT no longer has a fixed table ID, causing some issues with code that
1639 was hardwired to a specific ID. Lv Zheng.
1641 Fixed a problem where the method auto-serialization could interfere with
1642 the current SyncLevel. This change makes the auto-serialization support
1643 transparent to the SyncLevel support and management.
1645 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1646 interface is intended for early access to the namespace during the
1647 initial namespace device discovery walk. The _SUB method has been seen to
1648 access operation regions in some cases, causing errors because the
1649 operation regions are not fully initialized.
1651 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1652 that can cause faults. Lv Zheng.
1654 AML Debugger: Add thread ID support so that single-step mode only applies
1655 to the AML Debugger thread. This prevents runtime errors within some
1658 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1659 methods that are invoked by this interface are optional, removed warnings
1660 emitted for the case where one or more of these methods do not exist.
1661 ACPICA BZ 1208, original change by Prarit Bhargava.
1663 Made a major pass through the entire ACPICA source code base to
1664 standardize formatting that has diverged a bit over time. There are no
1665 functional changes, but this will of course cause quite a few code
1666 differences from the previous ACPICA release.
1668 Example Code and Data Size: These are the sizes for the OS-independent
1669 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1670 debug version of the code includes the debug output trace mechanism and
1671 has a much larger code and data size.
1674 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1675 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1677 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1678 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1681 2) iASL Compiler/Disassembler and Tools:
1683 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1684 definition blocks within a single ASL file and the resulting AML file.
1685 Support for this type of file was also added to the various tools that
1686 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1687 example code below shows two definition blocks within the same file:
1689 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1693 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1697 iASL: Enhanced typechecking for the Name() operator. All expressions for
1698 the value of the named object must be reduced/folded to a single constant
1699 at compile time, as per the ACPI specification (the AML definition of
1702 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1703 and assembly headers). Now all emitted code correctly begins in column 1.
1705 iASL: Added an error message for an attempt to open a Scope() on an
1706 object defined in an SSDT. The DSDT is always loaded into the namespace
1707 first, so any attempt to open a Scope on an SSDT object will fail at
1711 ----------------------------------------
1712 30 September 2015. Summary of changes for version 20150930:
1714 1) ACPICA kernel-resident subsystem:
1716 Debugger: Implemented several changes and bug fixes to assist support for
1717 the in-kernel version of the AML debugger. Lv Zheng.
1718 - Fix the "predefined" command for in-kernel debugger.
1719 - Do not enter debug command loop for the help and version commands.
1720 - Disallow "execute" command during execution/single-step of a method.
1722 Interpreter: Updated runtime typechecking for all operators that have
1723 target operands. The operand is resolved and validated that it is legal.
1724 For example, the target cannot be a non-data object such as a Device,
1725 Mutex, ThermalZone, etc., as per the ACPI specification.
1727 Debugger: Fixed the double-mutex user I/O handshake to work when local
1728 deadlock detection is enabled.
1730 Debugger: limited display of method locals and arguments (LocalX and
1731 ArgX) to only those that have actually been initialized. This prevents
1732 lines of extraneous output.
1734 Updated the definition of the NFIT table to correct the bit polarity of
1735 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1737 Example Code and Data Size: These are the sizes for the OS-independent
1738 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1739 debug version of the code includes the debug output trace mechanism and
1740 has a much larger code and data size.
1743 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1744 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1746 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1747 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1750 2) iASL Compiler/Disassembler and Tools:
1752 iASL: Improved the compile-time typechecking for operands of many of the
1755 -- Added an option to disable compiler operand/operator typechecking (-
1758 -- For the following operators, the TermArg operands are now validated
1759 when possible to be Integer data objects: BankField, OperationRegion,
1760 DataTableRegion, Buffer, and Package.
1762 -- Store (Source, Target): Both the source and target operands are
1763 resolved and checked that the operands are both legal. For example,
1764 neither operand can be a non-data object such as a Device, Mutex,
1765 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1766 operator can be used to store an object to any type of target object.
1768 -- Store (Source, Target): If the source is a Package object, the target
1769 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1770 is a Package, the source must also be a Package.
1772 -- Store (Source, Target): A warning is issued if the source and target
1773 resolve to the identical named object.
1775 -- Store (Source, <method invocation>): An error is generated for the
1776 target method invocation, as this construct is not supported by the AML
1779 -- For all ASL math and logic operators, the target operand must be a
1780 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1781 includes the function return value also.
1783 -- External declarations are also included in the typechecking where
1784 possible. External objects defined using the UnknownObj keyword cannot be
1785 typechecked, however.
1787 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1789 - Legacy code: Index(PKG1, 3)
1790 - New ASL+ code: PKG1[3]
1791 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1794 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1795 spaces were inadvertently appended to the filename, causing file access
1796 and deletion problems on some systems.
1798 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1799 possible compiler output files when building the test suite -- thus
1800 exercising these features of the compiler. These files are automatically
1801 deleted when the test suite exits.
1804 ----------------------------------------
1805 18 August 2015. Summary of changes for version 20150818:
1807 1) ACPICA kernel-resident subsystem:
1809 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1810 Zheng. ACPICA BZ 1186.
1812 Completed development to ensure that the ACPICA Disassembler and Debugger
1813 are fully standalone components of ACPICA. Removed cross-component
1814 dependences. Lv Zheng.
1816 The max-number-of-AML-loops is now runtime configurable (previously was
1817 compile-time only). This is essentially a loop timeout to force-abort
1818 infinite AML loops. ACPCIA BZ 1192.
1820 Debugger: Cleanup output to dump ACPI names and namepaths without any
1821 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1823 Removed unnecessary conditional compilations across the Debugger and
1824 Disassembler components where entire modules could be left uncompiled.
1826 The aapits test is deprecated and has been removed from the ACPICA git
1827 tree. The test has never been completed and has not been maintained, thus
1828 becoming rather useless. ACPICA BZ 1015, 794.
1830 A batch of small changes to close bugzilla and other reports:
1831 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1832 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1833 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1834 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1836 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1838 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1840 - Debugger: Split debugger initialization/termination interfaces. Lv
1842 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1844 - AcpiExec: Add debug message during _REG method phase during table
1846 - AcpiNames: Fix a regression where some output was missing and no longer
1848 - Debugger: General cleanup and simplification. Lv Zheng.
1849 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1851 Example Code and Data Size: These are the sizes for the OS-independent
1852 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1853 debug version of the code includes the debug output trace mechanism and
1854 has a much larger code and data size.
1857 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1858 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1860 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1861 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1864 2) iASL Compiler/Disassembler and Tools:
1866 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1867 were not handled properly and caused load errors. Now, properly invoke
1868 and use the ACPICA auto-reallocate mechanism for ACPI table data
1869 structures. ACPICA BZ 1188
1871 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1874 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1875 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1876 executed during initialization. ACPICA BZ 1187, 1189.
1878 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1879 that corresponds to each disassembled ASL statement, to simplify
1880 debugging. ACPICA BZ 1191.
1882 Debugger: Add option to the "objects" command to display a summary of the
1883 current namespace objects (Object type and count). This is displayed if
1884 the command is entered with no arguments.
1886 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1889 ----------------------------------------
1890 17 July 2015. Summary of changes for version 20150717:
1892 1) ACPICA kernel-resident subsystem:
1894 Improved the partitioning between the Debugger and Disassembler
1895 components. This allows the Debugger to be used standalone within kernel
1896 code without the Disassembler (which is used for single stepping also).
1897 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1899 Debugger: Implemented a new command to trace the execution of control
1900 methods (Trace). This is especially useful for the in-kernel version of
1901 the debugger when file I/O may not be available for method trace output.
1902 See the ACPICA reference for more information. Lv Zheng.
1904 Moved all C library prototypes (used for the local versions of these
1905 functions when requested) to a new header, acclib.h
1906 Cleaned up the use of non-ANSI C library functions. These functions are
1907 implemented locally in ACPICA. Moved all such functions to a common
1908 source file, utnonansi.c
1910 Debugger: Fixed a problem with the "!!" command (get last command
1911 executed) where the debugger could enter an infinite loop and eventually
1914 Removed the use of local macros that were used for some of the standard C
1915 library functions to automatically cast input parameters. This mostly
1916 affected the is* functions where the input parameter is defined to be an
1917 int. This required a few modifications to the main ACPICA source code to
1918 provide casting for these functions and eliminate possible compiler
1919 warnings for these parameters.
1921 Across the source code, added additional status/error checking to resolve
1922 issues discovered by static source code analysis tools such as Coverity.
1924 Example Code and Data Size: These are the sizes for the OS-independent
1925 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1926 debug version of the code includes the debug output trace mechanism and
1927 has a much larger code and data size.
1930 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1931 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1933 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1934 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1937 2) iASL Compiler/Disassembler and Tools:
1939 iASL: Fixed a regression where the device map file feature no longer
1940 worked properly when used in conjunction with the disassembler. It only
1941 worked properly with the compiler itself.
1943 iASL: Implemented a new warning for method LocalX variables that are set
1944 but never used (similar to a C compiler such as gcc). This also applies
1945 to ArgX variables that are not defined by the parent method, and are
1946 instead (legally) used as local variables.
1948 iASL/Preprocessor: Finished the pass-through of line numbers from the
1949 preprocessor to the compiler. This ensures that compiler errors/warnings
1950 have the correct original line numbers and filenames, regardless of any
1953 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1954 pass-through of comments to the preprocessor output file (which becomes
1955 the compiler input file). Also fixed a problem with // comments that
1956 appear after a math expression.
1958 iASL: Added support for the TCPA server table to the table compiler and
1959 template generator. (The client table was already previously supported)
1961 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1962 identify the iASL compiler.
1964 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1965 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1968 AcpiHelp: Update to expand help messages for the iASL preprocessor
1972 ----------------------------------------
1973 19 June 2015. Summary of changes for version 20150619:
1975 Two regressions in version 20150616 have been addressed:
1977 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1978 etc.) This update changes ACPICA to only use the standard headers for
1979 functions, or the prototypes for the local versions of the C library
1980 functions. Across the source code, this required some additional casts
1981 for some Clib invocations for portability. Moved all local prototypes to
1982 a new file, acclib.h
1984 Fixes several problems with recent changes to the handling of the FACS
1985 table that could cause some systems not to boot.
1988 ----------------------------------------
1989 16 June 2015. Summary of changes for version 20150616:
1992 1) ACPICA kernel-resident subsystem:
1994 Across the entire ACPICA source code base, the various macros for the C
1995 library functions (such as ACPI_STRLEN, etc.) have been removed and
1996 replaced by the standard C library names (strlen, etc.) The original
1997 purpose for these macros is no longer applicable. This simplification
1998 reduces the number of macros used in the ACPICA source code
1999 significantly, improving readability and maintainability.
2001 Implemented support for a new ACPI table, the OSDT. This table, the
2002 "override" SDT, can be loaded directly by the host OS at boot time. It
2003 enables the replacement of existing namespace objects that were installed
2004 via the DSDT and/or SSDTs. The primary purpose for this is to replace
2005 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
2006 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
2009 Added support for systems with (improperly) two FACS tables -- a "32-bit"
2010 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
2011 X field). This change will support both automatically. There continues to
2012 be systems found with this issue. This support requires a change to the
2013 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
2014 been added to allow the host to select which FACS is desired
2015 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
2018 Added a new feature to allow for systems that do not contain an FACS.
2019 Although this is already supported on hardware-reduced platforms, the
2020 feature has been extended for all platforms. The reasoning is that we do
2021 not want to abort the entire ACPICA initialization just because the
2022 system is seriously buggy and has no FACS.
2024 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
2025 not correctly transcribed from the ACPI specification in ACPICA version
2028 Implemented support for the _CLS object in the AcpiGetObjectInfo external
2031 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
2032 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
2033 compiler also updated. Note: The TCPA "server" table is not supported by
2034 the disassembler/table-compiler at this time.
2036 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
2038 Example Code and Data Size: These are the sizes for the OS-independent
2039 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2040 debug version of the code includes the debug output trace mechanism and
2041 has a much larger code and data size.
2044 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2045 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2047 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2048 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2051 2) iASL Compiler/Disassembler and Tools:
2053 Disassembler: Fixed a problem with the new symbolic operator disassembler
2054 where incorrect ASL code could be emitted in some cases for the "non-
2055 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
2056 ShiftRight. The actual problem cases seem to be rather unusual in common
2057 ASL code, however. David Box.
2059 Modified the linux version of acpidump to obtain ACPI tables from not
2060 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
2063 iASL: Fixed a problem where the user preprocessor output file (.i)
2064 contained extra data that was not expected. The compiler was using this
2065 file as a temporary file and passed through #line directives in order to
2066 keep compiler error messages in sync with the input file and line number
2067 across multiple include files. The (.i) is no longer a temporary file as
2068 the compiler uses a new, different file for the original purpose.
2070 iASL: Fixed a problem where comments within the original ASL source code
2071 file were not passed through to the preprocessor output file, nor any
2074 iASL: Fixed some issues for the handling of the "#include" preprocessor
2075 directive and the similar (but not the same) "Include" ASL operator.
2077 iASL: Add support for the new OSDT in both the disassembler and compiler.
2079 iASL: Fixed a problem with the constant folding support where a Buffer
2080 object could be incorrectly generated (incorrectly formed) during a
2081 conversion to a Store() operator.
2083 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
2084 description text for the _REV predefined name. _REV now permanently
2085 returns 2, as per the ACPI 6.0 specification.
2087 Debugger: Enhanced the output of the Debug ASL object for references
2088 produced by the Index operator. For Buffers and strings, only output the
2089 actual byte pointed to by the index. For packages, only print the single
2090 package element decoded by the index. Previously, the entire
2091 buffer/string/package was emitted.
2093 iASL/Table-compiler: Fixed a regression where the "generic" data types
2094 were no longer recognized, causing errors.
2097 ----------------------------------------
2098 15 May 2015. Summary of changes for version 20150515:
2100 This release implements most of ACPI 6.0 as described below.
2102 1) ACPICA kernel-resident subsystem:
2104 Implemented runtime argument checking and return value checking for all
2105 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
2106 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
2108 Example Code and Data Size: These are the sizes for the OS-independent
2109 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2110 debug version of the code includes the debug output trace mechanism and
2111 has a much larger code and data size.
2114 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2115 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2117 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2118 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2121 2) iASL Compiler/Disassembler and Tools:
2123 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
2124 names (argument count validation and return value typechecking.)
2126 iASL disassembler and table compiler: implemented support for all new
2127 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
2129 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
2132 iASL preprocessor: Added a new directive to enable inclusion of binary
2133 blobs into ASL code. The new directive is #includebuffer. It takes a
2134 binary file as input and emits a named ascii buffer object into the ASL
2137 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
2139 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
2142 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
2146 ----------------------------------------
2147 10 April 2015. Summary of changes for version 20150410:
2149 Reverted a change introduced in version 20150408 that caused
2150 a regression in the disassembler where incorrect operator
2151 symbols could be emitted.
2154 ----------------------------------------
2155 08 April 2015. Summary of changes for version 20150408:
2158 1) ACPICA kernel-resident subsystem:
2160 Permanently set the return value for the _REV predefined name. It now
2161 returns 2 (was 5). This matches other ACPI implementations. _REV will be
2162 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
2163 for ACPI 2.0 and later. It should never be used to differentiate or
2164 identify operating systems.
2166 Added the "Windows 2015" string to the _OSI support. ACPICA will now
2167 return TRUE to a query with this string.
2169 Fixed several issues with the local version of the printf function.
2171 Added the C99 compiler option (-std=c99) to the Unix makefiles.
2174 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
2175 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
2177 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2178 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2181 2) iASL Compiler/Disassembler and Tools:
2183 iASL: Implemented an enhancement to the constant folding feature to
2184 transform the parse tree to a simple Store operation whenever possible:
2185 Add (2, 3, X) ==> is converted to: Store (5, X)
2186 X = 2 + 3 ==> is converted to: Store (5, X)
2188 Updated support for the SLIC table (Software Licensing Description Table)
2189 in both the Data Table compiler and the disassembler. The SLIC table
2190 support now conforms to "Microsoft Software Licensing Tables (SLIC and
2191 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
2192 following the ACPI header is now defined to be "Proprietary Data", and as
2193 such, can only be entered or displayed as a hex data block.
2195 Implemented full support for the MSDM table as described in the document
2196 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
2197 following the ACPI header is defined to be "Proprietary Data", and can
2198 only be entered or displayed as a hex data block.
2200 Implemented the -Pn option for the iASL Table Compiler (was only
2201 implemented for the ASL compiler). This option disables the iASL
2204 Disassembler: For disassembly of Data Tables, added a comment field
2205 around the Ascii equivalent data that is emitted as part of the "Raw
2206 Table Data" block. This prevents the iASL Preprocessor from possible
2207 confusion if/when the table is compiled.
2209 Disassembler: Added an option (-df) to force the disassembler to assume
2210 that the table being disassembled contains valid AML. This feature is
2211 useful for disassembling AML files that contain ACPI signatures other
2212 than DSDT or SSDT (such as OEMx or other signatures).
2214 Changes for the EFI version of the tools:
2215 1) Fixed a build error/issue
2216 2) Fixed a cast warning
2218 iASL: Fixed a path issue with the __FILE__ operator by making the
2219 directory prefix optional within the internal SplitInputFilename
2222 Debugger: Removed some unused global variables.
2224 Tests: Updated the makefile for proper generation of the AAPITS suite.
2227 ----------------------------------------
2228 04 February 2015. Summary of changes for version 20150204:
2230 ACPICA kernel-resident subsystem:
2232 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2233 copyright to all module headers and signons, including the standard Linux
2234 header. This affects virtually every file in the ACPICA core subsystem,
2235 iASL compiler, all ACPICA utilities, and the test suites.
2237 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
2238 A raw gpe handling mechanism was created to allow better handling of GPE
2239 storms that aren't easily managed by the normal handler. The raw handler
2240 allows disabling/renabling of the the GPE so that interrupt storms can be
2241 avoided in cases where events cannot be timely serviced. In this
2242 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
2243 GPE. This API will leave the reference counts undisturbed, thereby
2244 preventing unintentional clearing of the GPE when the intent in only to
2245 temporarily disable it. Raw handlers allow enabling and disabling of a
2246 GPE by removing GPE register locking. As such, raw handlers much provide
2247 their own locks while using GPE API's to protect access to GPE data
2251 Events: Always modify GPE registers under the GPE lock.
2252 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
2253 values. Reported as bug by joe.liu@apple.com.
2255 Unix makefiles: Separate option to disable optimizations and
2256 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
2257 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
2258 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
2259 errors when building ACPICA. This allows disabling the option without
2260 also having to disable optimazations.
2264 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2265 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
2268 --------------------------------------
2269 07 November 2014. Summary of changes for version 20141107:
2271 This release is available at https://acpica.org/downloads
2273 This release introduces and implements language extensions to ASL that
2274 provide support for symbolic ("C-style") operators and expressions. These
2275 language extensions are known collectively as ASL+.
2278 1) iASL Compiler/Disassembler and Tools:
2280 Disassembler: Fixed a problem with disassembly of the UartSerialBus
2281 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
2284 Disassembler: Fixed the Unicode macro support to add escape sequences.
2285 All non-printable ASCII values are emitted as escape sequences, as well
2286 as the standard escapes for quote and backslash. Ensures that the
2287 disassembled macro can be correctly recompiled.
2289 iASL: Added Printf/Fprintf macros for formatted output. These macros are
2290 translated to existing AML Concatenate and Store operations. Printf
2291 writes to the ASL Debug object. Fprintf allows the specification of an
2292 ASL name as the target. Only a single format specifier is required, %o,
2293 since the AML interpreter dynamically converts objects to the required
2296 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2297 (Concatenate (Concatenate (Concatenate ("", Arg0),
2298 ": Unexpected value for "), Arg1), ", "), Arg2),
2299 " at line "), Arg3), Debug)
2301 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
2302 Arg0, Arg1, Arg2, Arg3)
2304 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2305 ("", Arg1), ": "), Arg0), " Successful"), STR1)
2307 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
2309 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
2310 ASL parse tree before the AML code is generated. This allows blocks of
2311 ASL code to be removed in order to help locate and identify problem
2312 devices and/or code. David E. Box.
2314 AcpiExec: Added support (-fi) for an optional namespace object
2315 initialization file. This file specifies initial values for namespace
2316 objects as necessary for debugging and testing different ASL code paths
2317 that may be taken as a result of BIOS options.
2320 2) Overview of symbolic operator support for ASL (ASL+)
2321 -------------------------------------------------------
2323 As an extension to the ASL language, iASL implements support for symbolic
2324 (C-style) operators for math and logical expressions. This can greatly
2325 simplify ASL code as well as improve both readability and
2326 maintainability. These language extensions can exist concurrently with
2327 all legacy ASL code and expressions.
2329 The symbolic extensions are 100% compatible with existing AML
2330 interpreters, since no new AML opcodes are created. To implement the
2331 extensions, the iASL compiler transforms the symbolic expressions into
2332 the legacy ASL/AML equivalents at compile time.
2334 Full symbolic expressions are supported, along with the standard C
2335 precedence and associativity rules.
2337 Full disassembler support for the symbolic expressions is provided, and
2338 creates an automatic migration path for existing ASL code to ASL+ code
2339 via the disassembly process. By default, the disassembler now emits ASL+
2340 code with symbolic expressions. An option (-dl) is provided to force the
2341 disassembler to emit legacy ASL code if desired.
2343 Below is the complete list of the currently supported symbolic operators
2344 with examples. See the iASL User Guide for additional information.
2347 ASL+ Syntax Legacy ASL Equivalent
2348 ----------- ---------------------
2352 Z = X + Y Add (X, Y, Z)
2353 Z = X - Y Subtract (X, Y, Z)
2354 Z = X * Y Multiply (X, Y, Z)
2355 Z = X / Y Divide (X, Y, , Z)
2356 Z = X % Y Mod (X, Y, Z)
2357 Z = X << Y ShiftLeft (X, Y, Z)
2358 Z = X >> Y ShiftRight (X, Y, Z)
2359 Z = X & Y And (X, Y, Z)
2360 Z = X | Y Or (X, Y, Z)
2361 Z = X ^ Y Xor (X, Y, Z)
2366 // Logical operators
2368 (X == Y) LEqual (X, Y)
2369 (X != Y) LNotEqual (X, Y)
2370 (X < Y) LLess (X, Y)
2371 (X > Y) LGreater (X, Y)
2372 (X <= Y) LLessEqual (X, Y)
2373 (X >= Y) LGreaterEqual (X, Y)
2374 (X && Y) LAnd (X, Y)
2378 // Assignment and compound assignment operations
2381 X += Y Add (X, Y, X)
2382 X -= Y Subtract (X, Y, X)
2383 X *= Y Multiply (X, Y, X)
2384 X /= Y Divide (X, Y, , X)
2385 X %= Y Mod (X, Y, X)
2386 X <<= Y ShiftLeft (X, Y, X)
2387 X >>= Y ShiftRight (X, Y, X)
2388 X &= Y And (X, Y, X)
2390 X ^= Y Xor (X, Y, X)
2397 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2398 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2400 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2402 And (MEMB, 0xFFFFFFF0, SRMB)
2403 Store (MEMB, Local2)
2404 Store (PDBM, Local1)
2405 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2407 Or (PDBM, 0x02, PDBM)
2411 If (((R510 & 0x03FB) == 0x02E0) ||
2412 ((R520 & 0x03FB) == 0x02E0) ||
2413 ((R530 & 0x03FB) == 0x02E0) ||
2414 ((R540 & 0x03FB) == 0x02E0))
2416 SRMB = (MEMB & 0xFFFFFFF0)
2419 PDBM &= 0xFFFFFFFFFFFFFFF9
2425 Store (0x1234, Local1)
2426 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2427 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2428 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2429 Store (Index (PKG1, 0x03), Local6)
2430 Store (Add (Local3, Local2), Debug)
2431 Add (Local1, 0x0F, Local2)
2432 Add (Local1, Multiply (Local2, Local3), Local2)
2433 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2437 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2438 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2439 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2440 Local6 = Index (PKG1, 0x03)
2441 Debug = (Local3 + Local2)
2442 Local2 = (Local1 + 0x0F)
2443 Local2 = (Local1 + (Local2 * Local3))
2444 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2447 ----------------------------------------
2448 26 September 2014. Summary of changes for version 20140926:
2450 1) ACPICA kernel-resident subsystem:
2452 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2453 In order to support GPIO Connection objects with multiple pins, along
2454 with the related Field objects, the following changes to the interface
2455 have been made: The Address is now defined to be the offset in bits of
2456 the field unit from the previous invocation of a Connection. It can be
2457 viewed as a "Pin Number Index" into the connection resource descriptor.
2458 The BitWidth is the exact bit width of the field. It is usually one bit,
2459 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2460 additional information and examples.
2462 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2463 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2464 by the firmware), so that they cannot fire until they are enabled via
2465 AcpiUpdateAllGpes. Rafael J. Wysocki.
2467 Added a new return flag for the Event/GPE status interfaces --
2468 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2469 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2470 GPE currently has a handler associated with it, and can thus actually
2471 affect the system. Lv Zheng.
2473 Example Code and Data Size: These are the sizes for the OS-independent
2474 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2475 debug version of the code includes the debug output trace mechanism and
2476 has a much larger code and data size.
2479 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2480 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2482 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2483 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2485 2) iASL Compiler/Disassembler and Tools:
2487 iASL: Fixed a memory allocation/free regression introduced in 20140828
2488 that could cause the compiler to crash. This was introduced inadvertently
2489 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2492 iASL: Removed two error messages that have been found to create false
2493 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2494 1) Illegal forward reference within a method
2495 2) Illegal reference across two methods
2497 iASL: Implemented a new option (-lm) to create a hardware mapping file
2498 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2499 works for both the compiler and disassembler. See the iASL compiler user
2500 guide for additional information and examples (section 6.4.6).
2502 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2503 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2504 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2506 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2507 unless STDIN is actually a terminal. Assists with batch-mode processing.
2510 Disassembler/AcpiHelp: Added another large group of recognized _HID
2514 ----------------------------------------
2515 28 August 2014. Summary of changes for version 20140828:
2517 1) ACPICA kernel-resident subsystem:
2519 Fixed a problem related to the internal use of the Timer() operator where
2520 a 64-bit divide could cause an attempted link to a double-precision math
2521 library. This divide is not actually necessary, so the code was
2522 restructured to eliminate it. Lv Zheng.
2524 ACPI 5.1: Added support for the runtime validation of the _DSD package
2525 (similar to the iASL support).
2527 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2528 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2530 Example Code and Data Size: These are the sizes for the OS-independent
2531 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2532 debug version of the code includes the debug output trace mechanism and
2533 has a much larger code and data size.
2536 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2537 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2539 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2540 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2542 2) iASL Compiler/Disassembler and Tools:
2544 AcpiExec: Fixed a problem on unix systems where the original terminal
2545 state was not always properly restored upon exit. Seen when using the -v
2546 option. ACPICA BZ 1104.
2548 iASL: Fixed a problem with the validation of the ranges/length within the
2549 Memory24 resource descriptor. There was a boundary condition when the
2550 range was equal to the (length -1) caused by the fact that these values
2551 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2553 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2555 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2557 now supported properly.
2559 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2560 in the disassembler, data table compiler, and table template generator.
2562 iASL: Added a requirement for Device() objects that one of either a _HID
2563 or _ADR must exist within the scope of a Device, as per the ACPI
2564 specification. Remove a similar requirement that was incorrectly in place
2565 for the _DSD object.
2567 iASL: Added error detection for illegal named references within control
2568 methods that would cause runtime failures. Now trapped as errors are: 1)
2569 References to objects within a non-parent control method. 2) Forward
2570 references (within a method) -- for control methods, AML interpreters use
2571 a one-pass parse of control methods. ACPICA BZ 1008.
2573 iASL: Added error checking for dependencies related to the _PSx power
2574 methods. ACPICA BZ 1029.
2575 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2577 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2580 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2581 deploying the existing object and string caches and adding new caches for
2584 iASL: Split the huge parser source file into multiple subfiles to improve
2585 manageability. Generation now requires the M4 macro preprocessor, which
2586 is part of the Bison distribution on both unix and windows platforms.
2588 AcpiSrc: Fixed and removed all extraneous warnings generated during
2589 entire ACPICA source code scan and/or conversion.
2592 ----------------------------------------
2594 24 July 2014. Summary of changes for version 20140724:
2596 The ACPI 5.1 specification has been released and is available at:
2597 http://uefi.org/specs/access
2600 0) ACPI 5.1 support in ACPICA:
2602 ACPI 5.1 is fully supported in ACPICA as of this release.
2604 New predefined names. Support includes iASL and runtime ACPICA
2606 _CCA (Cache Coherency Attribute).
2607 _DSD (Device-Specific Data). David Box.
2609 Modifications to existing ACPI tables. Support includes headers, iASL
2610 Data Table compiler, disassembler, and the template generator.
2611 FADT - New fields and flags. Graeme Gregory.
2612 GTDT - One new subtable and new fields. Tomasz Nowicki.
2613 MADT - Two new subtables. Tomasz Nowicki.
2614 PCCT - One new subtable.
2617 New notification type for System Resource Affinity change events.
2620 1) ACPICA kernel-resident subsystem:
2622 Fixed a regression introduced in 20140627 where a fault can happen during
2623 the deletion of Alias AML namespace objects. The problem affected both
2624 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2626 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2627 simple mechanism to enable wake GPEs that have no associated handler or
2628 control method. Rafael Wysocki.
2630 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2631 handler or control method associated with the particular GPE. This will
2632 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2634 Updated GPE handling and dispatch by disabling the GPE before clearing
2635 the status bit for edge-triggered GPEs. Lv Zheng.
2637 Added Timer() support to the AML Debug object. The current timer value is
2638 now displayed with each invocation of (Store to) the debug object to
2639 enable simple generation of execution times for AML code (method
2640 execution for example.) ACPICA BZ 1093.
2642 Example Code and Data Size: These are the sizes for the OS-independent
2643 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2644 debug version of the code includes the debug output trace mechanism and
2645 has a much larger code and data size.
2648 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2649 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2651 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2652 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2655 2) iASL Compiler/Disassembler and Tools:
2657 Fixed an issue with the recently added local printf implementation,
2658 concerning width/precision specifiers that could cause incorrect output.
2659 Lv Zheng. ACPICA BZ 1094.
2661 Disassembler: Added support to detect buffers that contain UUIDs and
2662 disassemble them to an invocation of the ToUUID operator. Also emit
2663 commented descriptions of known ACPI-related UUIDs.
2665 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2666 -u. Adds three new files.
2668 iASL: Update table compiler and disassembler for DMAR table changes that
2669 were introduced in September 2013. With assistance by David Woodhouse.
2671 ----------------------------------------
2672 27 June 2014. Summary of changes for version 20140627:
2674 1) ACPICA kernel-resident subsystem:
2676 Formatted Output: Implemented local versions of standard formatted output
2677 utilities such as printf, etc. Over time, it has been discovered that
2678 there are in fact many portability issues with printf, and the addition
2679 of this feature will fix/prevent these issues once and for all. Some
2680 known issues are summarized below:
2682 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2683 for the Linux kernel and is %uI64 for some MSVC versions.
2684 2) Invoking printf consistently in a manner that is portable across both
2685 32-bit and 64-bit platforms is difficult at best in many situations.
2686 3) The output format for pointers varies from system to system (leading
2687 zeros especially), and leads to inconsistent output from ACPICA across
2689 4) Certain platform-specific printf formats may conflict with ACPICA use.
2690 5) If there is no local C library available, ACPICA now has local support
2693 -- To address these printf issues in a complete manner, ACPICA now
2694 directly implements a small subset of printf format specifiers, only
2695 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2697 Implemented support for ACPICA generation within the EFI environment.
2698 Initially, the AcpiDump utility is supported in the UEFI shell
2699 environment. Lv Zheng.
2701 Added a new external interface, AcpiLogError, to improve ACPICA
2702 portability. This allows the host to redirect error messages from the
2703 ACPICA utilities. Lv Zheng.
2705 Added and deployed new OSL file I/O interfaces to improve ACPICA
2713 There are C library implementations of these functions in the new file
2714 service_layers/oslibcfs.c -- however, the functions can be implemented by
2715 the local host in any way necessary. Lv Zheng.
2717 Implemented a mechanism to disable/enable ACPI table checksum validation
2718 at runtime. This can be useful when loading tables very early during OS
2719 initialization when it may not be possible to map the entire table in
2720 order to compute the checksum. Lv Zheng.
2722 Fixed a buffer allocation issue for the Generic Serial Bus support.
2723 Originally, a fixed buffer length was used. This change allows for
2724 variable-length buffers based upon the protocol indicated by the field
2725 access attributes. Reported by Lan Tianyu. Lv Zheng.
2727 Fixed a problem where an object detached from a namespace node was not
2728 properly terminated/cleared and could cause a circular list problem if
2729 reattached. ACPICA BZ 1063. David Box.
2731 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2733 Fixed a possible memory leak in an error return path within the function
2734 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2736 Example Code and Data Size: These are the sizes for the OS-independent
2737 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2738 debug version of the code includes the debug output trace mechanism and
2739 has a much larger code and data size.
2742 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2743 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2745 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2746 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2749 2) iASL Compiler/Disassembler and Tools:
2751 Disassembler: Add dump of ASCII equivalent text within a comment at the
2752 end of each line of the output for the Buffer() ASL operator.
2754 AcpiDump: Miscellaneous changes:
2755 Fixed repetitive table dump in -n mode.
2756 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2757 the ACPI 2.0 GUID fails.
2759 iASL: Fixed a problem where the compiler could fault if incorrectly given
2760 an acpidump output file as input. ACPICA BZ 1088. David Box.
2762 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2763 they are invoked without any arguments.
2765 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2766 1086. Colin Ian King.
2768 Disassembler: Cleaned up a block of code that extracts a parent Op
2769 object. Added a comment that explains that the parent is guaranteed to be
2770 valid in this case. ACPICA BZ 1069.
2773 ----------------------------------------
2774 24 April 2014. Summary of changes for version 20140424:
2776 1) ACPICA kernel-resident subsystem:
2778 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2779 Some of these tables are known to contain a trailing NULL entry. Lv
2782 Removed an extraneous error message for the case where there are a large
2783 number of system GPEs (> 124). This was the "32-bit FADT register is too
2784 long to convert to GAS struct" message, which is irrelevant for GPEs
2785 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2786 (limited capacity) GAS bit length. Also, several changes to ensure proper
2787 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2790 Implemented and deployed additional configuration support for the public
2791 ACPICA external interfaces. Entire classes of interfaces can now be
2792 easily modified or configured out, replaced by stubbed inline functions
2793 by default. Lv Zheng.
2795 Moved all public ACPICA runtime configuration globals to the public
2796 ACPICA external interface file for convenience. Also, removed some
2797 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2799 Documentation: Added a new section to the ACPICA reference describing the
2800 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2801 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2804 Example Code and Data Size: These are the sizes for the OS-independent
2805 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2806 debug version of the code includes the debug output trace mechanism and
2807 has a much larger code and data size.
2810 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2811 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2813 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2814 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2817 2) iASL Compiler/Disassembler and Tools:
2819 iASL and disassembler: Add full support for the LPIT table (Low Power
2820 Idle Table). Includes support in the disassembler, data table compiler,
2821 and template generator.
2824 1) Add option to force the use of the RSDT (over the XSDT).
2825 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2827 iASL: Add check for predefined packages that are too large. For
2828 predefined names that contain subpackages, check if each subpackage is
2829 too large. (Check for too small already exists.)
2831 Debugger: Updated the GPE command (which simulates a GPE by executing the
2832 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2833 to the GPE 0/1 FADT-defined blocks.
2835 Unix application OSL: Update line-editing support. Add additional error
2836 checking and take care not to reset terminal attributes on exit if they
2837 were never set. This should help guarantee that the terminal is always
2838 left in the previous state on program exit.
2841 ----------------------------------------
2842 25 March 2014. Summary of changes for version 20140325:
2844 1) ACPICA kernel-resident subsystem:
2846 Updated the auto-serialize feature for control methods. This feature
2847 automatically serializes all methods that create named objects in order
2848 to prevent runtime errors. The update adds support to ignore the
2849 currently executing AML SyncLevel when invoking such a method, in order
2850 to prevent disruption of any existing SyncLevel priorities that may exist
2851 in the AML code. Although the use of SyncLevels is relatively rare, this
2852 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2853 appear on some machines starting with the 20140214 release.
2855 Added a new external interface to allow the host to install ACPI tables
2856 very early, before the namespace is even created. AcpiInstallTable gives
2857 the host additional flexibility for ACPI table management. Tables can be
2858 installed directly by the host as if they had originally appeared in the
2859 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2860 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2861 with additional internal restructuring and cleanup. See the ACPICA
2862 Reference for interface details. Lv Zheng.
2864 Added validation of the checksum for all incoming dynamically loaded
2865 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2868 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2869 and GPE handler removal. Restructured calls to eliminate possible race
2870 conditions. Lv Zheng.
2872 Added a warning for the use/execution of the ASL/AML Unload (table)
2873 operator. This will help detect and identify machines that use this
2874 operator if and when it is ever used. This operator has never been seen
2875 in the field and the usage model and possible side-effects of the drastic
2876 runtime action of a full table removal are unknown.
2878 Reverted the use of #pragma push/pop which was introduced in the 20140214
2879 release. It appears that push and pop are not implemented by enough
2880 compilers to make the use of this feature feasible for ACPICA at this
2881 time. However, these operators may be deployed in a future ACPICA
2884 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2887 Source code generation:
2888 1) Disabled the use of the "strchr" macro for the gcc-specific
2889 generation. For some versions of gcc, this macro can periodically expose
2890 a compiler bug which in turn causes compile-time error(s).
2891 2) Added support for PPC64 compilation. Colin Ian King.
2893 Example Code and Data Size: These are the sizes for the OS-independent
2894 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2895 debug version of the code includes the debug output trace mechanism and
2896 has a much larger code and data size.
2899 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2900 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2902 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2903 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2906 2) iASL Compiler/Disassembler and Tools:
2908 Disassembler: Added several new features to improve the readability of
2909 the resulting ASL code. Extra information is emitted within comment
2910 fields in the ASL code:
2911 1) Known _HID/_CID values are decoded to descriptive text.
2912 2) Standard values for the Notify() operator are decoded to descriptive
2914 3) Target operands are expanded to full pathnames (in a comment) when
2917 Disassembler: Miscellaneous updates for extern() handling:
2918 1) Abort compiler if file specified by -fe option does not exist.
2919 2) Silence unnecessary warnings about argument count mismatches.
2920 3) Update warning messages concerning unresolved method externals.
2921 4) Emit "UnknownObj" keyword for externals whose type cannot be
2925 1) Added the -a option to display both the ASL syntax and the AML
2926 encoding for an input ASL operator. This effectively displays all known
2927 information about an ASL operator with one AcpiHelp invocation.
2928 2) Added substring match support (similar to a wildcard) for the -i
2929 (_HID/PNP IDs) option.
2931 iASL/Disassembler: Since this tool does not yet support execution on big-
2932 endian machines, added detection of endianness and an error message if
2933 execution is attempted on big-endian. Support for big-endian within iASL
2934 is a feature that is on the ACPICA to-be-done list.
2937 1) Remove option to extract binary files from an acpidump; this function
2938 is made obsolete by the AcpiXtract utility.
2939 2) General cleanup of open files and allocated buffers.
2942 ----------------------------------------
2943 14 February 2014. Summary of changes for version 20140214:
2945 1) ACPICA kernel-resident subsystem:
2947 Implemented a new mechanism to proactively prevent problems with ill-
2948 behaved reentrant control methods that create named ACPI objects. This
2949 behavior is illegal as per the ACPI specification, but is nonetheless
2950 frequently seen in the field. Previously, this could lead to an
2951 AE_ALREADY_EXISTS exception if the method was actually entered by more
2952 than one thread. This new mechanism detects such methods at table load
2953 time and marks them "serialized" to prevent reentrancy. A new global
2954 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2955 feature if desired. This mechanism and global option obsoletes and
2956 supersedes the previous AcpiGbl_SerializeAllMethods option.
2958 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2959 respond TRUE to _OSI queries with this string. It is the stated policy of
2960 ACPICA to add new strings to the _OSI support as soon as possible after
2961 they are defined. See the full ACPICA _OSI policy which has been added to
2962 the utilities/utosi.c file.
2964 Hardened/updated the _PRT return value auto-repair code:
2965 1) Do not abort the repair on a single subpackage failure, continue to
2966 check all subpackages.
2967 2) Add check for the minimum subpackage length (4).
2968 3) Properly handle extraneous NULL package elements.
2970 Added support to avoid the possibility of infinite loops when traversing
2971 object linked lists. Never allow an infinite loop, even in the face of
2972 corrupted object lists.
2974 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2975 pack(pop) directives to ensure that the ACPICA headers are independent of
2976 compiler settings or other host headers.
2978 Example Code and Data Size: These are the sizes for the OS-independent
2979 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2980 debug version of the code includes the debug output trace mechanism and
2981 has a much larger code and data size.
2984 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2985 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2987 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2988 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2991 2) iASL Compiler/Disassembler and Tools:
2993 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2994 first reserved field was incorrectly forced to have a value of zero. This
2995 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2997 Debugger: Added missing support for the "Extra" and "Data" subobjects
2998 when displaying object data.
3000 Debugger: Added support to display entire object linked lists when
3001 displaying object data.
3003 iASL: Removed the obsolete -g option to obtain ACPI tables from the
3004 Windows registry. This feature has been superseded by the acpidump
3008 ----------------------------------------
3009 14 January 2014. Summary of changes for version 20140114:
3011 1) ACPICA kernel-resident subsystem:
3013 Updated all ACPICA copyrights and signons to 2014. Added the 2014
3014 copyright to all module headers and signons, including the standard Linux
3015 header. This affects virtually every file in the ACPICA core subsystem,
3016 iASL compiler, all ACPICA utilities, and the test suites.
3018 Improved parameter validation for AcpiInstallGpeBlock. Added the
3020 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
3021 2) There is not already a GPE block attached to the device.
3022 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
3025 Correctly support "references" in the ACPI_OBJECT. This change fixes the
3026 support to allow references (namespace nodes) to be passed as arguments
3027 to control methods via the evaluate object interface. This is probably
3028 most useful for testing purposes, however.
3030 Improved support for 32/64 bit physical addresses in printf()-like
3031 output. This change improves the support for physical addresses in printf
3032 debug statements and other output on both 32-bit and 64-bit hosts. It
3033 consistently outputs the appropriate number of bytes for each host. The
3034 %p specifier is unsatisfactory since it does not emit uniform output on
3035 all hosts/clib implementations (on some, leading zeros are not supported,
3036 leading to difficult-to-read output).
3038 Example Code and Data Size: These are the sizes for the OS-independent
3039 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3040 debug version of the code includes the debug output trace mechanism and
3041 has a much larger code and data size.
3044 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3045 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3047 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3048 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3051 2) iASL Compiler/Disassembler and Tools:
3053 iASL: Fix a possible fault when using the Connection() operator. Fixes a
3054 problem if the parent Field definition for the Connection operator refers
3055 to an operation region that does not exist. ACPICA BZ 1064.
3057 AcpiExec: Load of local test tables is now optional. The utility has the
3058 capability to load some various tables to test features of ACPICA.
3059 However, there are enough of them that the output of the utility became
3060 confusing. With this change, only the required local tables are displayed
3061 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
3062 line specification. This makes the default output simler and easier to
3063 understand. The -el command line option restores the original behavior
3064 for testing purposes.
3066 AcpiExec: Added support for overlapping operation regions. This change
3067 expands the simulation of operation regions by supporting regions that
3068 overlap within the given address space. Supports SystemMemory and
3069 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
3071 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
3072 allows AcpiExec to simulate these address spaces, similar to the current
3073 support for SystemMemory and SystemIO.
3075 Debugger: Added new command to read/write/compare all namespace objects.
3076 The command "test objects" will exercise the entire namespace by writing
3077 new values to each data object, and ensuring that the write was
3078 successful. The original value is then restored and verified.
3080 Debugger: Added the "test predefined" command. This change makes this
3081 test public and puts it under the new "test" command. The test executes
3082 each and every predefined name within the current namespace.
3085 ----------------------------------------
3086 18 December 2013. Summary of changes for version 20131218:
3088 Global note: The ACPI 5.0A specification was released this month. There
3089 are no changes needed for ACPICA since this release of ACPI is an
3090 errata/clarification release. The specification is available at
3094 1) ACPICA kernel-resident subsystem:
3096 Added validation of the XSDT root table if it is present. Some older
3097 platforms contain an XSDT that is ill-formed or otherwise invalid (such
3098 as containing some or all entries that are NULL pointers). This change
3099 adds a new function to validate the XSDT before actually using it. If the
3100 XSDT is found to be invalid, ACPICA will now automatically fall back to
3101 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
3102 ACPICA and enhanced by Lv Zheng and Bob Moore.
3104 Added a runtime option to ignore the XSDT and force the use of the RSDT.
3105 This change adds a runtime option that will force ACPICA to use the RSDT
3106 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
3107 requires that an XSDT be used instead of the RSDT, the XSDT has been
3108 found to be corrupt or ill-formed on some machines. Lv Zheng.
3110 Added a runtime option to favor 32-bit FADT register addresses over the
3111 64-bit addresses. This change adds an option to favor 32-bit FADT
3112 addresses when there is a conflict between the 32-bit and 64-bit versions
3113 of the same register. The default behavior is to use the 64-bit version
3114 in accordance with the ACPI specification. This can now be overridden via
3115 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
3117 During the change above, the internal "Convert FADT" and "Verify FADT"
3118 functions have been merged to simplify the code, making it easier to
3119 understand and maintain. ACPICA BZ 933.
3121 Improve exception reporting and handling for GPE block installation.
3122 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
3123 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
3125 Added helper macros to extract bus/segment numbers from the HEST table.
3126 This change adds two macros to extract the encoded bus and segment
3127 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
3128 Betty Dall <betty.dall@hp.com>
3130 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
3131 by ACPICA. It is not a public macro, so it should have no effect on
3132 existing OSV code. Lv Zheng.
3134 Example Code and Data Size: These are the sizes for the OS-independent
3135 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3136 debug version of the code includes the debug output trace mechanism and
3137 has a much larger code and data size.
3140 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3141 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3143 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3144 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3147 2) iASL Compiler/Disassembler and Tools:
3149 Disassembler: Improved pathname support for emitted External()
3150 statements. This change adds full pathname support for external names
3151 that have been resolved internally by the inclusion of additional ACPI
3152 tables (via the iASL -e option). Without this change, the disassembler
3153 can emit multiple externals for the same object, or it become confused
3154 when the Scope() operator is used on an external object. Overall, greatly
3155 improves the ability to actually recompile the emitted ASL code when
3156 objects a referenced across multiple ACPI tables. Reported by Michael
3157 Tsirkin (mst@redhat.com).
3159 Tests/ASLTS: Updated functional control suite to execute with no errors.
3160 David Box. Fixed several errors related to the testing of the interpreter
3161 slack mode. Lv Zheng.
3163 iASL: Added support to detect names that are declared within a control
3164 method, but are unused (these are temporary names that are only valid
3165 during the time the method is executing). A remark is issued for these
3166 cases. ACPICA BZ 1022.
3168 iASL: Added full support for the DBG2 table. Adds full disassembler,
3169 table compiler, and template generator support for the DBG2 table (Debug
3172 iASL: Added full support for the PCCT table, update the table definition.
3173 Updates the PCCT table definition in the actbl3.h header and adds table
3174 compiler and template generator support.
3176 iASL: Added an option to emit only error messages (no warnings/remarks).
3177 The -ve option will enable only error messages, warnings and remarks are
3178 suppressed. This can simplify debugging when only the errors are
3179 important, such as when an ACPI table is disassembled and there are many
3180 warnings and remarks -- but only the actual errors are of real interest.
3182 Example ACPICA code (source/tools/examples): Updated the example code so
3183 that it builds to an actual working program, not just example code. Added
3184 ACPI tables and execution of an example control method in the DSDT. Added
3185 makefile support for Unix generation.
3188 ----------------------------------------
3189 15 November 2013. Summary of changes for version 20131115:
3191 This release is available at https://acpica.org/downloads
3194 1) ACPICA kernel-resident subsystem:
3196 Resource Manager: Fixed loop termination for the "get AML length"
3197 function. The loop previously had an error termination on a NULL resource
3198 pointer, which can never happen since the loop simply increments a valid
3199 resource pointer. This fix changes the loop to terminate with an error on
3200 an invalid end-of-buffer condition. The problem can be seen as an
3201 infinite loop by callers to AcpiSetCurrentResources with an invalid or
3202 corrupted resource descriptor, or a resource descriptor that is missing
3203 an END_TAG descriptor. Reported by Dan Carpenter
3204 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
3206 Table unload and ACPICA termination: Delete all attached data objects
3207 during namespace node deletion. This fix updates namespace node deletion
3208 to delete the entire list of attached objects (attached via
3209 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
3210 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
3212 ACPICA termination: Added support to delete all objects attached to the
3213 root namespace node. This fix deletes any and all objects that have been
3214 attached to the root node via AcpiAttachData. Previously, none of these
3215 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
3217 Debug output: Do not emit the function nesting level for the in-kernel
3218 build. The nesting level is really only useful during a single-thread
3219 execution. Therefore, only enable this output for the AcpiExec utility.
3220 Also, only emit the thread ID when executing under AcpiExec (Context
3221 switches are still always detected and a message is emitted). ACPICA BZ
3224 Example Code and Data Size: These are the sizes for the OS-independent
3225 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3226 debug version of the code includes the debug output trace mechanism and
3227 has a much larger code and data size.
3230 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3231 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3233 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3234 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3237 2) iASL Compiler/Disassembler and Tools:
3239 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
3240 correct portable POSIX header for terminal control functions.
3242 Disassembler: Fixed control method invocation issues related to the use
3243 of the CondRefOf() operator. The problem is seen in the disassembly where
3244 control method invocations may not be disassembled properly if the
3245 control method name has been used previously as an argument to CondRefOf.
3246 The solution is to not attempt to emit an external declaration for the
3247 CondRefOf target (it is not necessary in the first place). This prevents
3248 disassembler object type confusion. ACPICA BZ 988.
3250 Unix Makefiles: Added an option to disable compiler optimizations and the
3251 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
3252 with optimizations (reportedly, gcc 4.4 for example). This change adds a
3253 command line option for make (NOOPT) that disables all compiler
3254 optimizations and the _FORTIFY_SOURCE compiler flag. The default
3255 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
3256 1034. Lv Zheng, Bob Moore.
3258 Tests/ASLTS: Added options to specify individual test cases and modes.
3259 This allows testers running aslts.sh to optionally specify individual
3260 test modes and test cases. Also added an option to disable the forced
3261 generation of the ACPICA tools from source if desired. Lv Zheng.
3263 ----------------------------------------
3264 27 September 2013. Summary of changes for version 20130927:
3266 This release is available at https://acpica.org/downloads
3269 1) ACPICA kernel-resident subsystem:
3271 Fixed a problem with store operations to reference objects. This change
3272 fixes a problem where a Store operation to an ArgX object that contained
3274 reference to a field object did not complete the automatic dereference
3276 then write to the actual field object. Instead, the object type of the
3277 field object was inadvertently changed to match the type of the source
3278 operand. The new behavior will actually write to the field object (buffer
3279 field or field unit), thus matching the correct ACPI-defined behavior.
3281 Implemented support to allow the host to redefine individual OSL
3282 prototypes. This change enables the host to redefine OSL prototypes found
3283 in the acpiosxf.h file. This allows the host to implement OSL interfaces
3284 with a macro or inlined function. Further, it allows the host to add any
3285 additional required modifiers such as __iomem, __init, __exit, etc., as
3286 necessary on a per-interface basis. Enables maximum flexibility for the
3287 OSL interfaces. Lv Zheng.
3289 Hardcoded the access width for the FADT-defined reset register. The ACPI
3290 specification requires the reset register width to be 8 bits. ACPICA now
3291 hardcodes the width to 8 and ignores the FADT width value. This provides
3292 compatibility with other ACPI implementations that have allowed BIOS code
3293 with bad register width values to go unnoticed. Matthew Garett, Bob
3297 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
3299 in the OSL header (acpiosxf). The change modifies the position of this
3300 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
3301 build issues if the OSL defines the implementation of the interface to be
3302 an inline stub function. Lv Zheng.
3304 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
3305 initialization interfaces. This change adds a new macro for the main init
3306 and terminate external interfaces in order to support hosts that require
3307 additional or different processing for these functions. Changed from
3308 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
3311 Cleaned up the memory allocation macros for configurability. In the
3313 case, the ACPI_ALLOCATE and related macros now resolve directly to their
3314 respective AcpiOs* OSL interfaces. Two options:
3315 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
3316 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
3317 2) For AcpiExec (and for debugging), the macros can optionally be
3319 to the local ACPICA interfaces that track each allocation (local tracking
3320 is used to immediately detect memory leaks).
3323 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
3324 to predefine this macro to either TRUE or FALSE during the system build.
3326 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
3328 Example Code and Data Size: These are the sizes for the OS-independent
3329 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3330 debug version of the code includes the debug output trace mechanism and
3331 has a much larger code and data size.
3334 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3335 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3337 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3338 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3341 2) iASL Compiler/Disassembler and Tools:
3343 iASL: Implemented wildcard support for the -e option. This simplifies use
3344 when there are many SSDTs that must be included to resolve external
3346 declarations. ACPICA BZ 1041. Example:
3347 iasl -e ssdt*.dat -d dsdt.dat
3349 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3350 adds a portable module that implements full history and limited line
3351 editing for Unix and Linux systems. It does not use readline() due to
3352 portability issues. Instead it uses the POSIX termio interface to put the
3353 terminal in raw input mode so that the various special keys can be
3355 (such as up/down-arrow for history support and left/right-arrow for line
3356 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3358 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3359 one or more spaces. This provides compatible with early or different
3360 versions of the AcpiDump utility. ACPICA BZ 1044.
3362 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3363 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3364 no other data. This change adds support to dump these tables. Any tables
3365 shorter than the length of an ACPI table header remain in error (an error
3366 message is emitted). Reported by Yi Li.
3368 Debugger: Echo actual command along with the "unknown command" message.
3370 ----------------------------------------
3371 23 August 2013. Summary of changes for version 20130823:
3373 1) ACPICA kernel-resident subsystem:
3375 Implemented support for host-installed System Control Interrupt (SCI)
3376 handlers. Certain ACPI functionality requires the host to handle raw
3377 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3378 state support requires the host device driver to handle SCIs to examine
3379 if the doorbell has been activated. Multiple SCI handlers can be
3380 installed to allow for future expansion. New external interfaces are
3381 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3382 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3384 Operation region support: Never locally free the handler "context"
3385 pointer. This change removes some dangerous code that attempts to free
3386 the handler context pointer in some (rare) circumstances. The owner of
3387 the handler owns this pointer and the ACPICA code should never touch it.
3388 Although not seen to be an issue in any kernel, it did show up as a
3389 problem (fault) under AcpiExec. Also, set the internal storage field for
3390 the context pointer to zero when the region is deactivated, simply for
3391 sanity. David Box. ACPICA BZ 1039.
3393 AcpiRead: On error, do not modify the return value target location. If an
3394 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3395 modify the target of the return value pointer. Makes the code consistent
3396 with the rest of ACPICA. Bjorn Helgaas.
3398 Example Code and Data Size: These are the sizes for the OS-independent
3399 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3400 debug version of the code includes the debug output trace mechanism and
3401 has a much larger code and data size.
3404 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3405 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3407 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3408 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3411 2) iASL Compiler/Disassembler and Tools:
3413 AcpiDump: Implemented several new features and fixed some problems:
3414 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3415 2) Added support for multiple table instances (SSDT, UEFI).
3416 3) Added option to dump "customized" (overridden) tables (-c).
3417 4) Fixed a problem where some table filenames were improperly
3419 5) Improved some error messages, removed some unnecessary messages.
3421 iASL: Implemented additional support for disassembly of ACPI tables that
3422 contain invocations of external control methods. The -fe<file> option
3423 allows the import of a file that specifies the external methods along
3424 with the required number of arguments for each -- allowing for the
3425 correct disassembly of the table. This is a workaround for a limitation
3426 of AML code where the disassembler often cannot determine the number of
3427 arguments required for an external control method and generates incorrect
3428 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3430 Debugger: Implemented a new command (paths) that displays the full
3431 pathnames (namepaths) and object types of all objects in the namespace.
3432 This is an alternative to the namespace command.
3434 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3435 mechanism and any installed handlers.
3437 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3438 This can occur if there are too many parent prefixes in a namepath (for
3439 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3441 Application OSLs: Set the return value for the PCI read functions. These
3442 functions simply return AE_OK, but should set the return value to zero
3443 also. This change implements this. ACPICA BZ 1038.
3445 Debugger: Prevent possible command line buffer overflow. Increase the
3446 size of a couple of the debugger line buffers, and ensure that overflow
3447 cannot happen. ACPICA BZ 1037.
3449 iASL: Changed to abort immediately on serious errors during the parsing
3450 phase. Due to the nature of ASL, there is no point in attempting to
3451 compile these types of errors, and they typically end up causing a
3452 cascade of hundreds of errors which obscure the original problem.
3454 ----------------------------------------
3455 25 July 2013. Summary of changes for version 20130725:
3457 1) ACPICA kernel-resident subsystem:
3459 Fixed a problem with the DerefOf operator where references to FieldUnits
3460 and BufferFields incorrectly returned the parent object, not the actual
3461 value of the object. After this change, a dereference of a FieldUnit
3462 reference results in a read operation on the field to get the value, and
3463 likewise, the appropriate BufferField value is extracted from the target
3466 Fixed a problem where the _WAK method could cause a fault under these
3467 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3468 method returned no value. The problem is rarely seen because most kernels
3469 run ACPICA in slack mode.
3471 For the DerefOf operator, a fatal error now results if an attempt is made
3472 to dereference a reference (created by the Index operator) to a NULL
3473 package element. Provides compatibility with other ACPI implementations,
3474 and this behavior will be added to a future version of the ACPI
3477 The ACPI Power Management Timer (defined in the FADT) is now optional.
3478 This provides compatibility with other ACPI implementations and will
3479 appear in the next version of the ACPI specification. If there is no PM
3480 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3481 zero in the FADT indicates no PM timer.
3483 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3484 allows the host to globally enable/disable all vendor strings, all
3485 feature strings, or both. Intended to be primarily used for debugging
3486 purposes only. Lv Zheng.
3488 Expose the collected _OSI data to the host via a global variable. This
3489 data tracks the highest level vendor ID that has been invoked by the BIOS
3490 so that the host (and potentially ACPICA itself) can change behaviors
3491 based upon the age of the BIOS.
3493 Example Code and Data Size: These are the sizes for the OS-independent
3494 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3495 debug version of the code includes the debug output trace mechanism and
3496 has a much larger code and data size.
3499 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3500 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3502 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3503 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3506 2) iASL Compiler/Disassembler and Tools:
3508 iASL: Created the following enhancements for the -so option (create
3510 1)Add offsets for the last nameseg in each namepath for every supported
3512 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3513 3)Add the actual AML opcode for the parent object of every supported
3515 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3517 Disassembler: Emit all unresolved external symbols in a single block.
3518 These are external references to control methods that could not be
3519 resolved, and thus, the disassembler had to make a guess at the number of
3522 iASL: The argument to the -T option (create table template) is now
3523 optional. If not specified, the default table is a DSDT, typically the
3526 ----------------------------------------
3527 26 June 2013. Summary of changes for version 20130626:
3529 1) ACPICA kernel-resident subsystem:
3531 Fixed an issue with runtime repair of the _CST object. Null or invalid
3532 elements were not always removed properly. Lv Zheng.
3534 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3535 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3536 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3537 makes the system-wide number of GPEs essentially unlimited.
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: 95.9K Code, 26.9K Data, 122.8K Total
3546 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3548 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3549 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3552 2) iASL Compiler/Disassembler and Tools:
3554 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3555 hosts. Now supports Linux, FreeBSD, and Windows.
3557 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3558 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3560 iASL/Preprocessor: Implemented full support for nested
3561 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3563 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3564 max. The original purpose of this constraint was to limit the amount of
3565 debug output. However, the string function in question (UtPrintString) is
3566 now used for the disassembler also, where 256 bytes is insufficient.
3567 Reported by RehabMan@GitHub.
3569 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3570 tables. ACPICA BZ 999. Lv Zheng.
3572 iASL: Fixed a couple of error exit issues that could result in a "Could
3573 not delete <file>" message during ASL compilation.
3575 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3576 the actual signatures for these tables are "FACP" and "APIC",
3579 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3580 tables are allowed to have multiple instances.
3582 ----------------------------------------
3583 17 May 2013. Summary of changes for version 20130517:
3585 1) ACPICA kernel-resident subsystem:
3587 Fixed a regression introduced in version 20130328 for _INI methods. This
3588 change fixes a problem introduced in 20130328 where _INI methods are no
3589 longer executed properly because of a memory block that was not
3590 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3591 <tomasz.nowicki@linaro.org>.
3593 Fixed a possible problem with the new extended sleep registers in the
3595 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3596 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3599 Implemented return value repair code for _CST predefined objects: Sort
3601 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3603 Implemented a debug-only option to disable loading of SSDTs from the
3604 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3605 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3606 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3608 Fixed some issues in the ACPICA initialization and termination code:
3609 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3610 1) Clear events initialized flag upon event component termination. ACPICA
3612 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3613 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3614 4) Clear debug buffer global on termination to prevent possible multiple
3615 delete. ACPICA BZ 1010.
3617 Standardized all switch() blocks across the entire source base. After
3619 years, different formatting for switch() had crept in. This change makes
3620 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3622 Split some files to enhance ACPICA modularity and configurability:
3623 1) Split buffer dump routines into utilities/utbuffer.c
3624 2) Split internal error message routines into utilities/uterror.c
3625 3) Split table print utilities into tables/tbprint.c
3626 4) Split iASL command-line option processing into asloptions.c
3628 Makefile enhancements:
3629 1) Support for all new files above.
3630 2) Abort make on errors from any subcomponent. Chao Guan.
3631 3) Add build support for Apple Mac OS X. Liang Qi.
3633 Example Code and Data Size: These are the sizes for the OS-independent
3634 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3635 debug version of the code includes the debug output trace mechanism and
3636 has a much larger code and data size.
3639 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3640 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3642 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3643 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3646 2) iASL Compiler/Disassembler and Tools:
3648 New utility: Implemented an easily portable version of the acpidump
3649 utility to extract ACPI tables from the system (or a file) in an ASCII
3651 dump format. The top-level code implements the various command line
3652 options, file I/O, and table dump routines. To port to a new host, only
3653 three functions need to be implemented to get tables -- since this
3654 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3655 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3656 1) The Windows version obtains the ACPI tables from the Registry.
3657 2) The Linux version is under development.
3658 3) Other hosts - If an OS-dependent module is submitted, it will be
3659 distributed with ACPICA.
3661 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3662 restructuring/change to the initialization sequence caused this option to
3663 no longer work properly.
3665 iASL: Implemented a mechanism to disable specific warnings and remarks.
3666 Adds a new command line option, "-vw <messageid> as well as "#pragma
3667 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3669 iASL: Fix for too-strict package object validation. The package object
3670 validation for return values from the predefined names is a bit too
3671 strict, it does not allow names references within the package (which will
3672 be resolved at runtime.) These types of references cannot be validated at
3673 compile time. This change ignores named references within package objects
3674 for names that return or define static packages.
3676 Debugger: Fixed the 80-character command line limitation for the History
3677 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3679 iASL: Added control method and package support for the -so option
3680 (generates AML offset table for BIOS support.)
3682 iASL: issue a remark if a non-serialized method creates named objects. If
3683 a thread blocks within the method for any reason, and another thread
3684 enters the method, the method will fail because an attempt will be made
3686 create the same (named) object twice. In this case, issue a remark that
3687 the method should be marked serialized. NOTE: may become a warning later.
3690 ----------------------------------------
3691 18 April 2013. Summary of changes for version 20130418:
3693 1) ACPICA kernel-resident subsystem:
3695 Fixed a possible buffer overrun during some rare but specific field unit
3696 read operations. This overrun can only happen if the DSDT version is 1 --
3697 meaning that all AML integers are 32 bits -- and the field length is
3698 between 33 and 55 bits long. During the read, an internal buffer object
3700 created for the field unit because the field is larger than an integer
3702 bits). However, in this case, the buffer will be incorrectly written
3703 beyond the end because the buffer length is less than the internal
3705 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3706 long, but a full 8 bytes will be written.
3708 Updated the Embedded Controller "orphan" _REG method support. This refers
3709 to _REG methods under the EC device that have no corresponding operation
3710 region. This is allowed by the ACPI specification. This update removes a
3711 dependency on the existence an ECDT table. It will execute an orphan _REG
3712 method as long as the operation region handler for the EC is installed at
3713 the EC device node and not the namespace root. Rui Zhang (original
3714 update), Bob Moore (update/integrate).
3716 Implemented run-time argument typechecking for all predefined ACPI names
3717 (_STA, _BIF, etc.) This change performs object typechecking on all
3718 incoming arguments for all predefined names executed via
3719 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3720 passing correct object types as well as the correct number of arguments
3721 (therefore identifying any issues immediately). Also, the ASL/namespace
3722 definition of the predefined name is checked against the ACPI
3723 specification for the proper argument count. Adds one new file,
3726 Changed an exception code for the ASL UnLoad() operator. Changed the
3727 exception code for the case where the input DdbHandle is invalid, from
3728 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3730 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3731 global makefile. The use of this flag causes compiler errors on earlier
3732 versions of GCC, so it has been removed for compatibility.
3734 Miscellaneous cleanup:
3735 1) Removed some unused/obsolete macros
3736 2) Fixed a possible memory leak in the _OSI support
3737 3) Removed an unused variable in the predefined name support
3738 4) Windows OSL: remove obsolete reference to a memory list field
3740 Example Code and Data Size: These are the sizes for the OS-independent
3741 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3742 debug version of the code includes the debug output trace mechanism and
3743 has a much larger code and data size.
3746 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3747 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3749 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3750 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3753 2) iASL Compiler/Disassembler and Tools:
3755 AcpiExec: Added installation of a handler for the SystemCMOS address
3756 space. This prevents control method abort if a method accesses this
3759 AcpiExec: Added support for multiple EC devices, and now install EC
3760 operation region handler(s) at the actual EC device instead of the
3761 namespace root. This reflects the typical behavior of host operating
3764 AcpiExec: Updated to ensure that all operation region handlers are
3765 installed before the _REG methods are executed. This prevents a _REG
3766 method from aborting if it accesses an address space has no handler.
3767 AcpiExec installs a handler for every possible address space.
3769 Debugger: Enhanced the "handlers" command to display non-root handlers.
3770 This change enhances the handlers command to display handlers associated
3771 with individual devices throughout the namespace, in addition to the
3772 currently supported display of handlers associated with the root
3776 ASL Test Suite: Several test suite errors have been identified and
3777 resolved, reducing the total error count during execution. Chao Guan.
3779 ----------------------------------------
3780 28 March 2013. Summary of changes for version 20130328:
3782 1) ACPICA kernel-resident subsystem:
3784 Fixed several possible race conditions with the internal object reference
3785 counting mechanism. Some of the external ACPICA interfaces update object
3786 reference counts without holding the interpreter or namespace lock. This
3787 change adds a spinlock to protect reference count updates on the internal
3788 ACPICA objects. Reported by and with assistance from Andriy Gapon
3791 FADT support: Removed an extraneous warning for very large GPE register
3792 sets. This change removes a size mismatch warning if the legacy length
3793 field for a GPE register set is larger than the 64-bit GAS structure can
3794 accommodate. GPE register sets can be larger than the 255-bit width
3795 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3797 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3798 return from this interface. Handles a possible timeout case if
3799 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3800 "forever". Jung-uk Kim.
3802 Predefined name support: Add allowed/required argument type information
3804 the master predefined info table. This change adds the infrastructure to
3805 enable typechecking on incoming arguments for all predefined
3806 methods/objects. It does not actually contain the code that will fully
3807 utilize this information, this is still under development. Also condenses
3808 some duplicate code for the predefined names into a new module,
3809 utilities/utpredef.c
3811 Example Code and Data Size: These are the sizes for the OS-independent
3812 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3813 debug version of the code includes the debug output trace mechanism and
3814 has a much larger code and data size.
3817 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3818 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3820 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3821 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3824 2) iASL Compiler/Disassembler and Tools:
3826 iASL: Implemented a new option to simplify the development of ACPI-
3828 BIOS code. Adds support for a new "offset table" output file. The -so
3829 option will create a C table containing the AML table offsets of various
3830 named objects in the namespace so that BIOS code can modify them easily
3832 boot time. This can simplify BIOS runtime code by eliminating expensive
3833 searches for "magic values", enhancing boot times and adding greater
3834 reliability. With assistance from Lee Hamel.
3836 iASL: Allow additional predefined names to return zero-length packages.
3837 Now, all predefined names that are defined by the ACPI specification to
3838 return a "variable-length package of packages" are allowed to return a
3839 zero length top-level package. This allows the BIOS to tell the host that
3840 the requested feature is not supported, and supports existing BIOS/ASL
3843 iASL: Changed the "result not used" warning to an error. This is the case
3844 where an ASL operator is effectively a NOOP because the result of the
3845 operation is not stored anywhere. For example:
3847 There is no target (missing 3rd argument), nor is the function return
3848 value used. This is potentially a very serious problem -- since the code
3849 was probably intended to do something, but for whatever reason, the value
3850 was not stored. Therefore, this issue has been upgraded from a warning to
3853 AcpiHelp: Added allowable/required argument types to the predefined names
3854 info display. This feature utilizes the recent update to the predefined
3855 names table (above).
3857 ----------------------------------------
3858 14 February 2013. Summary of changes for version 20130214:
3860 1) ACPICA Kernel-resident Subsystem:
3862 Fixed a possible regression on some hosts: Reinstated the safe return
3863 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3864 evaluated only once. Although these macros are not needed for the ACPICA
3865 code itself, they are often used by ACPI-related host device drivers
3867 the safe feature may be necessary.
3869 Fixed several issues related to the ACPI 5.0 reduced hardware support
3870 (SOC): Now ensure that if the platform declares itself as hardware-
3872 via the FADT, the following functions become NOOPs (and always return
3873 AE_OK) because ACPI is always enabled by definition on these machines:
3879 Dynamic Object Repair: Implemented additional runtime repairs for
3880 predefined name return values. Both of these repairs can simplify code in
3881 the related device drivers that invoke these methods:
3882 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3883 string to a Unicode buffer.
3884 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3886 lone end tag descriptor in the following cases: A Return(0) was executed,
3887 a null buffer was returned, or no object at all was returned (non-slack
3888 mode only). Adds a new file, nsconvert.c
3889 ACPICA BZ 998. Bob Moore, Lv Zheng.
3891 Resource Manager: Added additional code to prevent possible infinite
3893 while traversing corrupted or ill-formed resource template buffers. Check
3894 for zero-length resource descriptors in all code that loops through
3895 resource templates (the length field is used to index through the
3896 template). This change also hardens the external AcpiWalkResources and
3897 AcpiWalkResourceBuffer interfaces.
3899 Local Cache Manager: Enhanced the main data structure to eliminate an
3900 unnecessary mechanism to access the next object in the list. Actually
3901 provides a small performance enhancement for hosts that use the local
3902 ACPICA cache manager. Jung-uk Kim.
3904 Example Code and Data Size: These are the sizes for the OS-independent
3905 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3906 debug version of the code includes the debug output trace mechanism and
3907 has a much larger code and data size.
3910 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3911 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3913 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3914 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3917 2) iASL Compiler/Disassembler and Tools:
3919 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3920 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3921 that were made to the ACPI 5.0 specification.
3923 iASL/Disassembler: Added full support for the following new ACPI tables:
3924 1) The MTMR table (MID Timer Table)
3925 2) The VRTC table (Virtual Real Time Clock Table).
3926 Includes header file, disassembler, table compiler, and template support
3929 iASL: Implemented compile-time validation of package objects returned by
3930 predefined names. This new feature validates static package objects
3931 returned by the various predefined names defined to return packages. Both
3932 object types and package lengths are validated, for both parent packages
3933 and sub-packages, if any. The code is similar in structure and behavior
3935 the runtime repair mechanism within the AML interpreter and uses the
3936 existing predefined name information table. Adds a new file, aslprepkg.c.
3939 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3940 This feature detects a binary file with a valid ACPI table header and
3941 invokes the disassembler automatically. Eliminates the need to
3942 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3944 iASL/Disassembler: Added several warnings for the case where there are
3945 unresolved control methods during the disassembly. This can potentially
3946 cause errors when the output file is compiled, because the disassembler
3947 assumes zero method arguments in these cases (it cannot determine the
3948 actual number of arguments without resolution/definition of the method).
3950 Debugger: Added support to display all resources with a single command.
3951 Invocation of the resources command with no arguments will now display
3953 resources within the current namespace.
3955 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3958 ----------------------------------------
3959 17 January 2013. Summary of changes for version 20130117:
3961 1) ACPICA Kernel-resident Subsystem:
3963 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3964 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3965 objects to return a package containing one integer, most BIOS code
3967 two integers and the previous code reflects that. However, we also need
3969 support BIOS code that actually implements to the ACPI spec, and this
3970 change reflects this.
3972 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3973 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3974 C compilers that require this support.
3975 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3976 ACPI_DEBUG is already used by many of the various hosts.
3978 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3979 copyright to all module headers and signons, including the standard Linux
3980 header. This affects virtually every file in the ACPICA core subsystem,
3981 iASL compiler, all ACPICA utilities, and the test suites.
3983 Example Code and Data Size: These are the sizes for the OS-independent
3984 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3985 debug version of the code includes the debug output trace mechanism and
3986 has a much larger code and data size.
3989 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3990 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3992 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3993 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3996 2) iASL Compiler/Disassembler and Tools:
3998 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3999 prevent a possible fault on some hosts. Some C libraries modify the arg
4000 pointer parameter to vfprintf making it difficult to call it twice in the
4001 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
4002 does not affect the Windows OSL since the Win C library does not modify
4003 the arg pointer. Chao Guan, Bob Moore.
4005 iASL: Fixed a possible infinite loop when the maximum error count is
4006 reached. If an output file other than the .AML file is specified (such as
4007 a listing file), and the maximum number of errors is reached, do not
4008 attempt to flush data to the output file(s) as the compiler is aborting.
4009 This can cause an infinite loop as the max error count code essentially
4010 keeps calling itself.
4012 iASL/Disassembler: Added an option (-in) to ignore NOOP
4014 Implemented for both the compiler and the disassembler. Often, the NOOP
4015 opcode is used as padding for packages that are changed dynamically by
4017 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
4018 errors. This option causes the disassembler to ignore all NOOP opcodes
4019 (0xA3), and it also causes the compiler to ignore all ASL source code
4023 Debugger: Enhanced the Sleep command to execute all sleep states. This
4024 change allows Sleep to be invoked with no arguments and causes the
4025 debugger to execute all of the sleep states, 0-5, automatically.
4027 ----------------------------------------
4028 20 December 2012. Summary of changes for version 20121220:
4030 1) ACPICA Kernel-resident Subsystem:
4032 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
4033 alternate entry point for AcpiWalkResources and improves the usability of
4034 the resource manager by accepting as input a buffer containing the output
4035 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
4036 input buffer is not deleted by this interface so that it can be used by
4037 the host later. See the ACPICA reference for details.
4039 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
4040 (DSDT version < 2). The constant will be truncated and this warning
4041 reflects that behavior.
4043 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
4044 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
4045 both get and set the new wake bit in these descriptors, separately from
4046 the existing share bit. Reported by Aaron Lu.
4048 Interpreter: Fix Store() when an implicit conversion is not possible. For
4049 example, in the cases such as a store of a string to an existing package
4050 object, implement the store as a CopyObject(). This is a small departure
4051 from the ACPI specification which states that the control method should
4053 aborted in this case. However, the ASLTS suite depends on this behavior.
4055 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
4056 macros: check if debug output is currently enabled as soon as possible to
4057 minimize performance impact if debug is in fact not enabled.
4059 Source code restructuring: Cleanup to improve modularity. The following
4060 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
4061 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
4062 Associated makefiles and project files have been updated.
4064 Changed an exception code for LoadTable operator. For the case where one
4065 of the input strings is too long, change the returned exception code from
4066 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
4068 Fixed a possible memory leak in dispatcher error path. On error, delete
4069 the mutex object created during method mutex creation. Reported by
4070 tim.gardner@canonical.com.
4072 Example Code and Data Size: These are the sizes for the OS-independent
4073 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4074 debug version of the code includes the debug output trace mechanism and
4075 has a much larger code and data size.
4078 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4079 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4081 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4082 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4085 2) iASL Compiler/Disassembler and Tools:
4087 iASL: Disallow a method call as argument to the ObjectType ASL operator.
4088 This change tracks an errata to the ACPI 5.0 document. The AML grammar
4089 will not allow the interpreter to differentiate between a method and a
4090 method invocation when these are used as an argument to the ObjectType
4091 operator. The ACPI specification change is to disallow a method
4093 (UserTerm) for the ObjectType operator.
4095 Finish support for the TPM2 and CSRT tables in the headers, table
4096 compiler, and disassembler.
4098 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
4099 always expires immediately if the semaphore is not available. The
4101 code was using a relative-time timeout, but sem_timedwait requires the
4103 of an absolute time.
4105 iASL: Added a remark if the Timer() operator is used within a 32-bit
4106 table. This operator returns a 64-bit time value that will be truncated
4107 within a 32-bit table.
4109 iASL Source code restructuring: Cleanup to improve modularity. The
4110 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
4111 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
4115 ----------------------------------------
4116 14 November 2012. Summary of changes for version 20121114:
4118 1) ACPICA Kernel-resident Subsystem:
4120 Implemented a performance enhancement for ACPI/AML Package objects. This
4121 change greatly increases the performance of Package objects within the
4122 interpreter. It changes the processing of reference counts for packages
4124 optimizing for the most common case where the package sub-objects are
4125 either Integers, Strings, or Buffers. Increases the overall performance
4127 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
4129 Chao Guan. ACPICA BZ 943.
4131 Implemented and deployed common macros to extract flag bits from resource
4132 descriptors. Improves readability and maintainability of the code. Fixes
4134 problem with the UART serial bus descriptor for the number of data bits
4135 flags (was incorrectly 2 bits, should be 3).
4137 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
4138 of the macros and changed the SETx macros to the style of (destination,
4139 source). Also added ACPI_CASTx companion macros. Lv Zheng.
4141 Example Code and Data Size: These are the sizes for the OS-independent
4142 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4143 debug version of the code includes the debug output trace mechanism and
4144 has a much larger code and data size.
4147 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4148 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4150 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4151 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4154 2) iASL Compiler/Disassembler and Tools:
4156 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
4157 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
4158 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
4160 Disassembler: Fixed a problem with external declaration generation. Fixes
4161 a problem where an incorrect pathname could be generated for an external
4162 declaration if the original reference to the object includes leading
4163 carats (^). ACPICA BZ 984.
4165 Debugger: Completed a major update for the Disassemble<method> command.
4166 This command was out-of-date and did not properly disassemble control
4167 methods that had any reasonable complexity. This fix brings the command
4169 to the same level as the rest of the disassembler. Adds one new file,
4170 dmdeferred.c, which is existing code that is now common with the main
4171 disassembler and the debugger disassemble command. ACPICA MZ 978.
4173 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
4174 Newer versions of Bison emit this prototype, so moved the prototype out
4176 the iASL header to where it is actually used in order to avoid a
4180 iASL/Tools: Standardized use of the stream I/O functions:
4181 1) Ensure check for I/O error after every fopen/fread/fwrite
4182 2) Ensure proper order of size/count arguments for fread/fwrite
4183 3) Use test of (Actual != Requested) after all fwrite, and most fread
4184 4) Standardize I/O error messages
4185 Improves reliability and maintainability of the code. Bob Moore, Lv
4189 Disassembler: Prevent duplicate External() statements. During generation
4190 of external statements, detect similar pathnames that are actually
4191 duplicates such as these:
4194 Remove all leading '\' characters from pathnames during the external
4195 statement generation so that duplicates will be detected and tossed.
4198 Tools: Replace low-level I/O with stream I/O functions. Replace
4199 open/read/write/close with the stream I/O equivalents
4200 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
4203 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
4204 name header so that AcpiXtract recognizes the output file/table.
4206 iASL: Remove obsolete -2 option flag. Originally intended to force the
4207 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
4208 and the entire concept is now obsolete.
4210 ----------------------------------------
4211 18 October 2012. Summary of changes for version 20121018:
4214 1) ACPICA Kernel-resident Subsystem:
4216 Updated support for the ACPI 5.0 MPST table. Fixes some problems
4217 introduced by late changes to the table as it was added to the ACPI 5.0
4218 specification. Includes header, disassembler, and data table compiler
4219 support as well as a new version of the MPST template.
4221 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
4222 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
4223 methods: _HID, _CID, and _UID.
4225 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
4226 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
4227 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
4228 names for their various drivers. Affects the AcpiGetObjectInfo external
4229 interface, and other internal interfaces as well.
4231 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
4232 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
4233 on machines that support non-aligned transfers. Optimizes for this case
4234 rather than using a strncpy. With assistance from Zheng Lv.
4236 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
4237 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
4239 Added a new debug print message for AML mutex objects that are force-
4240 released. At control method termination, any currently acquired mutex
4241 objects are force-released. Adds a new debug-only message for each one
4244 Audited/updated all ACPICA return macros and the function debug depth
4245 counter: 1) Ensure that all functions that use the various TRACE macros
4246 also use the appropriate ACPICA return macros. 2) Ensure that all normal
4247 return statements surround the return expression (value) with parens to
4248 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
4249 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
4251 Global source code changes/maintenance: All extra lines at the start and
4252 end of each source file have been removed for consistency. Also, within
4253 comments, all new sentences start with a single space instead of a double
4254 space, again for consistency across the code base.
4256 Example Code and Data Size: These are the sizes for the OS-independent
4257 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4258 debug version of the code includes the debug output trace mechanism and
4259 has a much larger code and data size.
4262 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4263 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4265 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4266 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4269 2) iASL Compiler/Disassembler and Tools:
4271 AcpiExec: Improved the algorithm used for memory leak/corruption
4272 detection. Added some intelligence to the code that maintains the global
4273 list of allocated memory. The list is now ordered by allocated memory
4274 address, significantly improving performance. When running AcpiExec on
4275 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
4276 on the platform and/or the environment. Note, this performance
4277 enhancement affects the AcpiExec utility only, not the kernel-resident
4280 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
4281 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
4282 incorrect table offset reported for invalid opcodes. Report the original
4283 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
4285 Disassembler: Enhanced the -vt option to emit the binary table data in
4286 hex format to assist with debugging.
4288 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
4289 size of file structure. Colin Ian King.
4291 ----------------------------------------
4292 13 September 2012. Summary of changes for version 20120913:
4295 1) ACPICA Kernel-resident Subsystem:
4297 ACPI 5.0: Added two new notify types for the Hardware Error Notification
4298 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
4302 Table Manager: Merged/removed duplicate code in the root table resize
4303 functions. One function is external, the other is internal. Lv Zheng,
4307 Makefiles: Completely removed the obsolete "Linux" makefiles under
4308 acpica/generate/linux. These makefiles are obsolete and have been
4311 the generic unix makefiles under acpica/generate/unix.
4313 Makefiles: Ensure that binary files always copied properly. Minor rule
4315 to ensure that the final binary output files are always copied up to the
4316 appropriate binary directory (bin32 or bin64.)
4318 Example Code and Data Size: These are the sizes for the OS-independent
4319 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4321 version of the code includes the debug output trace mechanism and has a
4323 larger code and data size.
4326 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4327 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4329 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4330 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4333 2) iASL Compiler/Disassembler and Tools:
4335 Disassembler: Fixed a possible fault during the disassembly of resource
4336 descriptors when a second parse is required because of the invocation of
4337 external control methods within the table. With assistance from
4338 adq@lidskialf.net. ACPICA BZ 976.
4340 iASL: Fixed a namepath optimization problem. An error can occur if the
4342 node that contains the namepath to be optimized does not have a parent
4344 that is a named object. This change fixes the problem.
4346 iASL: Fixed a regression where the AML file is not deleted on errors. The
4348 output file should be deleted if there are any errors during the
4351 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4353 iASL: Added a feature to automatically increase internal line buffer
4355 Via realloc(), automatically increase the internal line buffer sizes as
4356 necessary to support very long source code lines. The current version of
4358 preprocessor requires a buffer long enough to contain full source code
4360 This change increases the line buffer(s) if the input lines go beyond the
4361 current buffer size. This eliminates errors that occurred when a source
4363 line was longer than the buffer.
4365 iASL: Fixed a problem with constant folding in method declarations. The
4366 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4368 Type3 opcode was used.
4370 Debugger: Improved command help support. For incorrect argument count,
4372 full help for the command. For help command itself, allow an argument to
4375 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4376 errors during execution of the suite. Guan Chao.
4378 ----------------------------------------
4379 16 August 2012. Summary of changes for version 20120816:
4382 1) ACPICA Kernel-resident Subsystem:
4384 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4386 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4387 deprecated and will probably be removed from the ACPI specification.
4389 does not invoke them, and reportedly never will. The final nail in the
4391 is that the ACPI specification states that these methods must be run with
4392 interrupts off, which is not going to happen in a kernel interpreter.
4394 Linux has removed all use of the methods also. It was discovered that
4395 invoking these functions caused failures on some machines, probably
4397 they were never tested since Windows does not call them. Affects two
4399 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4402 Implemented support for complex bit-packed buffers returned from the _PLD
4403 (Physical Location of Device) predefined method. Adds a new external
4404 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4406 structure. Note: C Bitfields cannot be used for this type of predefined
4407 structure since the memory layout of individual bitfields is not defined
4409 the C language. In addition, there are endian concerns where a compiler
4411 change the bitfield ordering based on the machine type. The new ACPICA
4412 interface eliminates these issues, and should be called after _PLD is
4413 executed. ACPICA BZ 954.
4415 Implemented a change to allow a scope change to root (via "Scope (\)")
4417 execution of module-level ASL code (code that is executed at table load
4420 Added the Windows8/Server2012 string for the _OSI method. This change
4423 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4426 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4428 and CSRT (Core System Resource Table).
4430 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4431 names. This simplifies access to the buffers returned by these predefined
4432 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4434 GPE support: Removed an extraneous parameter from the various low-level
4435 internal GPE functions. Tang Feng.
4437 Removed the linux makefiles from the unix packages. The generate/linux
4438 makefiles are obsolete and have been removed from the unix tarball
4440 packages. The replacement makefiles are under generate/unix, and there is
4442 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4444 Updates for Unix makefiles:
4445 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4446 2) Update linker flags (move to end of command line) for AcpiExec
4450 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4451 utxface.c to improve modularity and reduce file size.
4453 Example Code and Data Size: These are the sizes for the OS-independent
4454 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4455 debug version of the code includes the debug output trace mechanism and
4457 much larger code and data size.
4460 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4461 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4463 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4464 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4467 2) iASL Compiler/Disassembler and Tools:
4469 iASL: Fixed a problem with constant folding for fixed-length constant
4470 expressions. The constant-folding code was not being invoked for constant
4471 expressions that allow the use of type 3/4/5 opcodes to generate
4473 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4475 in the generation of invalid AML bytecode. ACPICA BZ 970.
4477 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4478 apparently automatically emit some of the necessary externals. This
4480 handles these versions in order to eliminate generation warnings.
4482 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4484 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4486 within comments in the output file.
4488 Debugger: Fixed a regression with the "Threads" command where
4489 AE_BAD_PARAMETER was always returned.
4491 ----------------------------------------
4492 11 July 2012. Summary of changes for version 20120711:
4494 1) ACPICA Kernel-resident Subsystem:
4496 Fixed a possible fault in the return package object repair code. Fixes a
4497 problem that can occur when a lone package object is wrapped with an
4499 package object in order to force conformance to the ACPI specification.
4501 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4505 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4506 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4507 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4509 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4511 Intel and other vendors. (for Intel: ICH4-M and earlier)
4513 This change removes the code to disable/enable bus master arbitration
4515 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4517 resume problems on some machines. The change has been in use for over
4521 Implemented two new external interfaces to support host-directed dynamic
4523 table load and unload. They are intended to simplify the host
4525 of hot-plug support:
4526 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4527 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4529 See the ACPICA reference for additional details. Adds one new file,
4530 components/tables/tbxfload.c
4532 Implemented and deployed two new interfaces for errors and warnings that
4534 known to be caused by BIOS/firmware issues:
4535 AcpiBiosError: Prints "ACPI Firmware Error" message.
4536 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4537 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4539 and FADT errors. Additional deployment to be completed as appropriate in
4541 future. The associated conditional macros are ACPI_BIOS_ERROR and
4542 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4547 Implicit notify support: ensure that no memory allocation occurs within a
4548 critical region. This fix moves a memory allocation outside of the time
4550 spinlock is held. Fixes issues on systems that do not allow this
4554 Split exception code utilities and tables into a new file,
4557 Example Code and Data Size: These are the sizes for the OS-independent
4558 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4560 version of the code includes the debug output trace mechanism and has a
4562 larger code and data size.
4565 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4566 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4568 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4569 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4572 2) iASL Compiler/Disassembler and Tools:
4574 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4578 Debugger: Enhanced the "tables" command to emit additional information
4580 the current set of ACPI tables, including the owner ID and flags decode.
4582 Debugger: Reimplemented the "unload" command to use the new
4583 AcpiUnloadParentTable external interface. This command was disable
4585 due to need for an unload interface.
4587 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4589 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4591 ----------------------------------------
4592 20 June 2012. Summary of changes for version 20120620:
4595 1) ACPICA Kernel-resident Subsystem:
4597 Implemented support to expand the "implicit notify" feature to allow
4599 devices to be notified by a single GPE. This feature automatically
4601 runtime device notification in the absence of a BIOS-provided GPE control
4602 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4604 provided by ACPICA for Windows compatibility, and is a workaround for
4607 code errors. See the description of the AcpiSetupGpeForWake interface in
4609 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4611 Changed some comments and internal function names to simplify and ensure
4612 correctness of the Linux code translation. No functional changes.
4614 Example Code and Data Size: These are the sizes for the OS-independent
4615 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4617 version of the code includes the debug output trace mechanism and has a
4619 larger code and data size.
4622 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4623 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4625 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4626 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4629 2) iASL Compiler/Disassembler and Tools:
4631 Disassembler: Added support to emit short, commented descriptions for the
4633 predefined names in order to improve the readability of the disassembled
4634 output. ACPICA BZ 959. Changes include:
4635 1) Emit descriptions for all standard predefined names (_INI, _STA,
4638 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4639 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4642 AcpiSrc: Fixed several long-standing Linux code translation issues.
4644 descriptions in function headers are now translated properly to lower
4647 underscores. ACPICA BZ 961. Also fixes translation problems such as
4653 local_fADT -> local_FADT
4654 execute_oSI -> execute_OSI
4656 iASL: Fixed a problem where null bytes were inadvertently emitted into
4660 iASL: Added the existing debug options to the standard help screen. There
4662 no longer two different help screens. ACPICA BZ 957.
4664 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4666 expand some of the descriptions where appropriate.
4668 iASL: Fixed the -ot option (display compile times/statistics). Was not
4670 properly for standard output; only worked for the debug file case.
4672 ----------------------------------------
4673 18 May 2012. Summary of changes for version 20120518:
4676 1) ACPICA Core Subsystem:
4678 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4680 to block until asynchronous events such as notifies and GPEs have
4682 Within ACPICA, it is only called before a notify or GPE handler is
4683 removed/uninstalled. It also may be useful for the host OS within related
4684 drivers such as the Embedded Controller driver. See the ACPICA reference
4686 additional information. ACPICA BZ 868.
4688 ACPI Tables: Added a new error message for a possible overflow failure
4690 the conversion of FADT 32-bit legacy register addresses to internal
4693 bit GAS structure representation. The GAS has a one-byte "bit length"
4695 thus limiting the register length to 255 bits. ACPICA BZ 953.
4697 Example Code and Data Size: These are the sizes for the OS-independent
4698 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4700 version of the code includes the debug output trace mechanism and has a
4702 larger code and data size.
4705 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4706 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4708 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4709 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4712 2) iASL Compiler/Disassembler and Tools:
4714 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4716 This keyword was added late in the ACPI 5.0 release cycle and was not
4717 implemented until now.
4719 Disassembler: Added support for Operation Region externals. Adds missing
4720 support for operation regions that are defined in another table, and
4721 referenced locally via a Field or BankField ASL operator. Now generates
4723 correct External statement.
4725 Disassembler: Several additional fixes for the External() statement
4727 related to some ASL operators. Also, order the External() statements
4728 alphabetically in the disassembler output. Fixes the External()
4731 the Create* field, Alias, and Scope operators:
4732 1) Create* buffer field operators - fix type mismatch warning on
4734 2) Alias - implement missing External support
4735 3) Scope - fix to make sure all necessary externals are emitted.
4737 iASL: Improved pathname support. For include files, merge the prefix
4739 with the file pathname and eliminate unnecessary components. Convert
4740 backslashes in all pathnames to forward slashes, for readability. Include
4742 pathname changes affect both #include and Include() type operators.
4744 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4746 of a valid line by inserting a newline and then returning the EOF during
4748 next call to GetNextLine. Prevents the line from being ignored due to EOF
4751 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4753 and Warning messages are now correctly recognized for both the source
4755 browser and the global error and warning counts.
4757 ----------------------------------------
4758 20 April 2012. Summary of changes for version 20120420:
4761 1) ACPICA Core Subsystem:
4763 Implemented support for multiple notify handlers. This change adds
4766 allow multiple system and device notify handlers on Device, Thermal Zone,
4768 Processor objects. This can simplify the host OS notification
4770 Also re-worked and restructured the entire notify support code to
4772 handler installation, handler removal, notify event queuing, and notify
4773 dispatch to handler(s). Note: there can still only be two global notify
4774 handlers - one for system notifies and one for device notifies. There are
4776 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4777 Moore, Rafael Wysocki.
4779 Fixed a regression in the package repair code where the object reference
4780 count was calculated incorrectly. Regression was introduced in the commit
4781 "Support to add Package wrappers".
4783 Fixed a couple possible memory leaks in the AML parser, in the error
4785 path. Jesper Juhl, Lin Ming.
4787 Example Code and Data Size: These are the sizes for the OS-independent
4788 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4789 debug version of the code includes the debug output trace mechanism and
4791 much larger code and data size.
4794 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4795 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4797 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4798 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4801 2) iASL Compiler/Disassembler and Tools:
4803 iASL: Fixed a problem with the resource descriptor support where the
4805 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4806 included in cumulative descriptor offset, resulting in incorrect values
4808 resource tags within resource descriptors appearing after a
4810 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4812 iASL and Preprocessor: Implemented full support for the #line directive
4814 correctly track original source file line numbers through the .i
4816 output file - for error and warning messages.
4818 iASL: Expand the allowable byte constants for address space IDs.
4820 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4821 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4823 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4825 iASL: Add option to completely disable the preprocessor (-Pn).
4827 iASL: Now emit all error/warning messages to standard error (stderr) by
4828 default (instead of the previous stdout).
4830 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4832 for resource descriptor offset fix above. Update/cleanup error output
4833 routines. Enable and send iASL errors/warnings to an error logfile
4834 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4836 several extraneous "unrecognized operator" messages.
4838 ----------------------------------------
4839 20 March 2012. Summary of changes for version 20120320:
4842 1) ACPICA Core Subsystem:
4844 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4845 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4847 does not execute these methods, and therefore these methods are often
4848 untested. It has been seen on some systems where the execution of these
4849 methods causes errors and also prevents the machine from entering S5. It
4851 therefore suggested that host operating systems do not execute these
4853 by default. In the future, perhaps these methods can be optionally
4855 based on the age of the system and/or what is the newest version of
4857 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4859 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4862 Fixed a problem where the length of the local/common FADT was set too
4864 The local FADT table length cannot be set to the common length until the
4865 original length has been examined. There is code that checks the table
4867 and sets various fields appropriately. This can affect older machines
4869 early FADT versions. For example, this can cause inadvertent writes to
4871 CST_CNT register. Julian Anastasov.
4873 Fixed a mapping issue related to a physical table override. Use the
4875 mapping mechanism for tables loaded via the physical override OSL
4877 This allows for early mapping before the virtual memory manager is
4879 Thomas Renninger, Bob Moore.
4881 Enhanced the automatic return-object repair code: Repair a common problem
4883 predefined methods that are defined to return a variable-length Package
4885 sub-objects. If there is only one sub-object, some BIOS ASL code
4887 simply returns the single object instead of a Package with one sub-
4889 This new support will repair this error by wrapping a Package object
4891 the original object, creating the correct and expected Package with one
4893 object. Names that can be repaired in this manner include: _ALR, _CSD,
4895 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4898 Changed the exception code returned for invalid ACPI paths passed as
4899 parameters to external interfaces such as AcpiEvaluateObject. Was
4900 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4902 Example Code and Data Size: These are the sizes for the OS-independent
4903 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4905 version of the code includes the debug output trace mechanism and has a
4907 larger code and data size.
4910 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4911 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4913 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4914 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4917 2) iASL Compiler/Disassembler and Tools:
4919 iASL: Added the infrastructure and initial implementation of a integrated
4921 like preprocessor. This will simplify BIOS development process by
4923 the need for a separate preprocessing step during builds. On Windows, it
4925 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4926 features including full #define() macro support are still under
4928 These preprocessor directives are supported:
4941 In addition, these new command line options are supported:
4942 -D <symbol> Define symbol for preprocessor use
4943 -li Create preprocessed output file (*.i)
4944 -P Preprocess only and create preprocessor output file (*.i)
4946 Table Compiler: Fixed a problem where the equals operator within an
4948 did not work properly.
4950 Updated iASL to use the current versions of Bison/Flex. Updated the
4952 project file to invoke these tools from the standard location. ACPICA BZ
4955 Flex for Windows: V2.5.4
4956 Bison for Windows: V2.4.1
4958 ----------------------------------------
4959 15 February 2012. Summary of changes for version 20120215:
4962 1) ACPICA Core Subsystem:
4964 There have been some major changes to the sleep/wake support code, as
4965 described below (a - e).
4967 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4968 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4969 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4971 time the _BFS method is called and the _WAK method is called. NOTE: all
4973 must update their wake/resume code or else sleep/wake will not work
4977 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4979 method. Some machines require that the GPEs are enabled before the _WAK
4981 is executed. Thomas Renninger.
4983 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4985 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4987 determine whether the system is rebooting or resuming. Matthew Garrett.
4989 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4991 match the ACPI specification requirement. Rafael Wysocki.
4993 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4994 registers within the V5 FADT. This support adds two new files:
4995 hardware/hwesleep.c implements the support for the new registers. Moved
4997 sleep/wake external interfaces to hardware/hwxfsleep.c.
5000 Added a new OSL interface for ACPI table overrides,
5001 AcpiOsPhysicalTableOverride. This interface allows the host to override a
5002 table via a physical address, instead of the logical address required by
5003 AcpiOsTableOverride. This simplifies the host implementation. Initial
5004 implementation by Thomas Renninger. The ACPICA implementation creates a
5006 shared function for table overrides that attempts both a logical and a
5009 Expanded the OSL memory read/write interfaces to 64-bit data
5010 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
5011 transfer support for GAS register structures passed to AcpiRead and
5014 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
5016 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
5018 See the ACPICA reference for details. ACPICA BZ 942. This option removes
5020 10% of the code and 5% of the static data, and the following hardware
5022 features become unavailable:
5023 PM Event and Control registers
5024 SCI interrupt (and handler)
5026 General Purpose Events (GPEs)
5029 FACS table (Waking vectors and Global Lock)
5031 Updated the unix tarball directory structure to match the ACPICA git
5033 tree. This ensures that the generic unix makefiles work properly (in
5034 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
5037 Updated the return value of the _REV predefined method to integer value 5
5039 reflect ACPI 5.0 support.
5041 Moved the external ACPI PM timer interface prototypes to the public
5043 file where they belong.
5045 Example Code and Data Size: These are the sizes for the OS-independent
5046 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5048 version of the code includes the debug output trace mechanism and has a
5050 larger code and data size.
5053 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5054 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5056 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5057 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5060 2) iASL Compiler/Disassembler and Tools:
5062 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
5063 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
5064 incorrectly displayed.
5066 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
5069 ----------------------------------------
5070 11 January 2012. Summary of changes for version 20120111:
5073 1) ACPICA Core Subsystem:
5075 Implemented a new mechanism to allow host device drivers to check for
5077 range conflicts with ACPI Operation Regions. Both SystemMemory and
5079 address spaces are supported. A new external interface,
5080 AcpiCheckAddressRange,
5081 allows drivers to check an address range against the ACPI namespace. See
5083 ACPICA reference for additional details. Adds one new file,
5084 utilities/utaddress.c. Lin Ming, Bob Moore.
5086 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
5089 Status registers, update the ACPI 5.0 flags, and update internal data
5090 structures to handle an FADT larger than 256 bytes. The size of the ACPI
5094 Updated all ACPICA copyrights and signons to 2012. Added the 2012
5096 all module headers and signons, including the standard Linux header. This
5097 affects virtually every file in the ACPICA core subsystem, iASL compiler,
5099 all ACPICA utilities.
5101 Example Code and Data Size: These are the sizes for the OS-independent
5102 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5104 version of the code includes the debug output trace mechanism and has a
5106 larger code and data size.
5109 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5110 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5112 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5113 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5116 2) iASL Compiler/Disassembler and Tools:
5118 Disassembler: fixed a problem with the automatic resource tag generation
5119 support. Fixes a problem where the resource tags are inadvertently not
5120 constructed if the table being disassembled contains external references
5122 control methods. Moved the actual construction of the tags to after the
5124 namespace is constructed (after 2nd parse is invoked due to external
5126 method references.) ACPICA BZ 941.
5128 Table Compiler: Make all "generic" operators caseless. These are the
5130 like UINT8, String, etc. Making these caseless improves ease-of-use.
5134 ----------------------------------------
5135 23 November 2011. Summary of changes for version 20111123:
5137 0) ACPI 5.0 Support:
5139 This release contains full support for the ACPI 5.0 specification, as
5142 Reduced Hardware Support:
5143 -------------------------
5145 This support allows for ACPI systems without the usual ACPI hardware.
5147 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
5149 not attempt to initialize or use any of the usual ACPI hardware. Note,
5151 this flag is set, all of the following ACPI hardware is assumed to be not
5152 present and is not initialized or accessed:
5154 General Purpose Events (GPEs)
5155 Fixed Events (PM1a/PM1b and PM Control)
5156 Power Management Timer and Console Buttons (power/sleep)
5157 Real-time Clock Alarm
5159 System Control Interrupt (SCI)
5160 The FACS is assumed to be non-existent
5165 All new tables and updates to existing tables are fully supported in the
5166 ACPICA headers (for use by device drivers), the disassembler, and the
5168 Data Table Compiler. ACPI 5.0 defines these new tables:
5170 BGRT /* Boot Graphics Resource Table */
5171 DRTM /* Dynamic Root of Trust for Measurement table */
5172 FPDT /* Firmware Performance Data Table */
5173 GTDT /* Generic Timer Description Table */
5174 MPST /* Memory Power State Table */
5175 PCCT /* Platform Communications Channel Table */
5176 PMTT /* Platform Memory Topology Table */
5177 RASF /* RAS Feature table */
5179 Operation Regions/SpaceIDs:
5180 ---------------------------
5182 All new operation regions are fully supported by the iASL compiler, the
5183 disassembler, and the ACPICA runtime code (for dispatch to region
5185 The new operation region Space IDs are:
5190 Resource Descriptors:
5191 ---------------------
5193 All new ASL resource descriptors are fully supported by the iASL
5196 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
5198 all new predefined resource tags). New descriptors are:
5207 ASL/AML Operators, New and Modified:
5208 ------------------------------------
5210 One new operator is added, the Connection operator, which is used to
5212 a GeneralPurposeIo or GenericSerialBus resource descriptor with
5214 field objects within an operation region. Several new protocols are
5216 with the AccessAs operator. All are fully supported by the iASL compiler,
5217 disassembler, and runtime ACPICA AML interpreter:
5219 Connection // Declare Field Connection
5221 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
5222 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
5224 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
5225 RawDataBuffer // Data type for Vendor Data
5228 Predefined ASL/AML Objects:
5229 ---------------------------
5231 All new predefined objects/control-methods are supported by the iASL
5233 and the ACPICA runtime validation/repair (arguments and return values.)
5235 predefined names include the following:
5237 Standard Predefined Names (Objects or Control Methods):
5238 _AEI, _CLS, _CPC, _CWS, _DEP,
5239 _DLM, _EVT, _GCP, _CRT, _GWS,
5240 _HRV, _PRE, _PSE, _SRT, _SUB.
5242 Resource Tags (Names used to access individual fields within resource
5244 _DBT, _DPL, _DRS, _END, _FLC,
5245 _IOR, _LIN, _MOD, _PAR, _PHA,
5246 _PIN, _PPI, _POL, _RXL, _SLV,
5247 _SPE, _STB, _TXL, _VEN.
5249 ACPICA External Interfaces:
5250 ---------------------------
5252 Several new interfaces have been defined for use by ACPI-related device
5253 drivers and other host OS services:
5255 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
5257 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
5258 provided by the BIOS. They are intended to be used in conjunction with
5260 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
5261 mutual exclusion with the AML code/interpreter.
5263 AcpiGetEventResources: Returns the (formatted) resource descriptors as
5265 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
5267 resource descriptors associated with hardware-reduced platform events,
5269 to the AcpiGetCurrentResources interface.
5271 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
5272 operation regions, information about the Connection() object and any
5274 length information is passed to the region handler within the Context
5277 AcpiBufferToResource: This interface converts a raw AML buffer containing
5279 resource template or resource descriptor to the ACPI_RESOURCE internal
5281 suitable for use by device drivers. Can be used by an operation region
5283 to convert the Connection() buffer object into a ACPI_RESOURCE.
5285 Miscellaneous/Tools/TestSuites:
5286 -------------------------------
5288 Support for extended _HID names (Four alpha characters instead of three).
5289 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
5290 Support for ACPI 5.0 features in the ASLTS test suite.
5291 Fully updated documentation (ACPICA and iASL reference documents.)
5293 ACPI Table Definition Language:
5294 -------------------------------
5296 Support for this language was implemented and released as a subsystem of
5298 iASL compiler in 2010. (See the iASL compiler User Guide.)
5301 Non-ACPI 5.0 changes for this release:
5302 --------------------------------------
5304 1) ACPICA Core Subsystem:
5306 Fix a problem with operation region declarations where a failure can
5309 the region name and an argument that evaluates to an object (such as the
5310 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
5313 Do not abort an ACPI table load if an invalid space ID is found within.
5315 will be caught later if the offending method is executed. ACPICA BZ 925.
5317 Fixed an issue with the FFixedHW space ID where the ID was not always
5318 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
5320 Fixed a problem with the 32-bit generation of the unix-specific OSL
5321 (osunixxf.c). Lin Ming, ACPICA BZ 936.
5323 Several changes made to enable generation with the GCC 4.6 compiler.
5327 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
5329 field registers out-of-range.
5331 2) iASL Compiler/Disassembler and Tools:
5333 iASL: Implemented the __PATH__ operator, which returns the full pathname
5335 the current source file.
5337 AcpiHelp: Automatically display expanded keyword information for all ASL
5340 Debugger: Add "Template" command to disassemble/dump resource template
5343 Added a new master script to generate and execute the ASLTS test suite.
5344 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5346 iASL: Fix problem with listing generation during processing of the
5348 operator where AML listing was disabled until the entire Switch block was
5351 iASL: Improve support for semicolon statement terminators. Fix "invalid
5352 character" message for some cases when the semicolon is used. Semicolons
5354 now allowed after every <Term> grammar element. ACPICA BZ 927.
5356 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5359 Disassembler: Fix problem with disassembly of the DataTableRegion
5361 where an inadvertent "Unhandled deferred opcode" message could be
5364 3) Example Code and Data Size
5366 These are the sizes for the OS-independent acpica.lib produced by the
5367 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5368 includes the debug output trace mechanism and has a much larger code and
5373 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5374 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5376 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5377 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5379 ----------------------------------------
5380 22 September 2011. Summary of changes for version 20110922:
5384 Support for ACPI 5.0 in ACPICA has been underway for several months and
5386 be released at the same time that ACPI 5.0 is officially released.
5388 The ACPI 5.0 specification is on track for release in the next few
5391 1) ACPICA Core Subsystem:
5393 Fixed a problem where the maximum sleep time for the Sleep() operator was
5394 intended to be limited to two seconds, but was inadvertently limited to
5398 Linux and Unix makefiles: Added header file dependencies to ensure
5400 generation of ACPICA core code and utilities. Also simplified the
5402 considerably through the use of the vpath variable to specify search
5406 2) iASL Compiler/Disassembler and Tools:
5408 iASL: Implemented support to check the access length for all fields
5410 access named Resource Descriptor fields. For example, if a resource field
5412 defined to be two bits, a warning is issued if a CreateXxxxField() is
5414 with an incorrect bit length. This is implemented for all current
5416 descriptor names. ACPICA BZ 930.
5418 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5422 iASL: Fixed a couple of issues associated with variable-length package
5423 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5425 VAR_PACKAGE when these are used as a package length. 2) Allow the
5427 opcode (in addition to PACKAGE) when validating object types for
5431 iASL: Emit statistics for all output files (instead of just the ASL input
5433 AML output). Includes listings, hex files, etc.
5435 iASL: Added -G option to the table compiler to allow the compilation of
5437 ACPI tables. The only part of a table that is required is the standard
5442 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5444 which also adds correct 64-bit support. Also, now all output filenames
5446 completely lower case.
5448 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5449 loading table files. A warning is issued for any such tables. The only
5450 exception is an FADT. This also fixes a possible fault when attempting to
5452 non-AML tables. ACPICA BZ 932.
5454 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5456 missing table terminator could cause a fault when using the -p option.
5458 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5461 3) Example Code and Data Size
5463 These are the sizes for the OS-independent acpica.lib produced by the
5464 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5465 includes the debug output trace mechanism and has a much larger code and
5469 Previous Release (VC 9.0):
5470 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5471 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5472 Current Release (VC 9.0):
5473 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5474 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5477 ----------------------------------------
5478 23 June 2011. Summary of changes for version 20110623:
5480 1) ACPI CA Core Subsystem:
5482 Updated the predefined name repair mechanism to not attempt repair of a
5484 return object if a _PSS object is present. We can only sort the _TSS
5486 package if there is no _PSS within the same scope. This is because if
5489 present, the ACPI specification dictates that the _TSS Power Dissipation
5491 is to be ignored, and therefore some BIOSs leave garbage values in the
5493 Power field(s). In this case, it is best to just return the _TSS package
5495 is. Reported by, and fixed with assistance from Fenghua Yu.
5497 Added an option to globally disable the control method return value
5499 and repair. This runtime option can be used to disable return value
5502 this is causing a problem on a particular machine. Also added an option
5504 AcpiExec (-dr) to set this disable flag.
5506 All makefiles and project files: Major changes to improve generation of
5508 tools. ACPICA BZ 912:
5509 Reduce default optimization levels to improve compatibility
5510 For Linux, add strict-aliasing=0 for gcc 4
5511 Cleanup and simplify use of command line defines
5512 Cleanup multithread library support
5513 Improve usage messages
5515 Linux-specific header: update handling of THREAD_ID and pthread. For the
5517 bit case, improve casting to eliminate possible warnings, especially with
5521 Example Code and Data Size: These are the sizes for the OS-independent
5522 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5524 version of the code includes the debug output trace mechanism and has a
5526 larger code and data size.
5528 Previous Release (VC 9.0):
5529 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5530 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5531 Current Release (VC 9.0):
5532 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5533 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5535 2) iASL Compiler/Disassembler and Tools:
5537 With this release, a new utility named "acpihelp" has been added to the
5539 package. This utility summarizes the ACPI specification chapters for the
5541 and AML languages. It generates under Linux/Unix as well as Windows, and
5542 provides the following functionality:
5543 Find/display ASL operator(s) -- with description and syntax.
5544 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5545 Find/display ACPI predefined name(s) -- with description, number
5546 of arguments, and the return value data type.
5547 Find/display AML opcode name(s) -- with opcode, arguments, and
5549 Decode/display AML opcode -- with opcode name, arguments, and
5552 Service Layers: Make multi-thread support configurable. Conditionally
5554 the multi-thread support so that threading libraries will not be linked
5557 necessary. The only tool that requires multi-thread support is AcpiExec.
5559 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5561 Bison appear to want the interface to yyerror to be a const char * (or at
5562 least this is a problem when generating iASL on some systems.) ACPICA BZ
5566 Tools: Fix for systems where O_BINARY is not defined. Only used for
5568 versions of the tools.
5570 ----------------------------------------
5571 27 May 2011. Summary of changes for version 20110527:
5573 1) ACPI CA Core Subsystem:
5575 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5577 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5578 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5579 (PSDT is now obsolete.)
5580 2) We added support for OEMx tables, signature "OEM" plus a fourth
5581 "don't care" character.
5582 3) Valid tables were encountered with a null signature, so we just
5583 gave up on validating the signature, (05/2008).
5584 4) We encountered non-AML tables such as the MADT, which caused
5585 interpreter errors and kernel faults. So now, we once again allow
5586 only SSDT, OEMx, and now, also a null signature. (05/2011).
5588 Added the missing _TDL predefined name to the global name list in order
5590 enable validation. Affects both the core ACPICA code and the iASL
5593 Example Code and Data Size: These are the sizes for the OS-independent
5594 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5596 version of the code includes the debug output trace mechanism and has a
5598 larger code and data size.
5600 Previous Release (VC 9.0):
5601 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5602 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5603 Current Release (VC 9.0):
5604 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5605 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5607 2) iASL Compiler/Disassembler and Tools:
5609 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5611 debugger command line. This adds support beyond simple integers --
5613 Strings, Buffers, and Packages. Includes support for nested packages.
5614 Increased the default command line buffer size to accommodate these
5616 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5618 Debugger/AcpiExec: Implemented support for "default" method arguments for
5620 Execute/Debug command. Now, the debugger will always invoke a control
5622 with the required number of arguments -- even if the command line
5624 none or insufficient arguments. It uses default integer values for any
5626 arguments. Also fixes a bug where only six method arguments maximum were
5627 supported instead of the required seven.
5629 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5631 also return status in order to prevent buffer overruns. See the ACPICA
5632 reference for details and syntax. ACPICA BZ 921
5634 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5635 makefiles to simplify support for the two different but similar parser
5636 generators, bison and yacc.
5638 Updated the generic unix makefile for gcc 4. The default gcc version is
5640 expected to be 4 or greater, since options specific to gcc 4 are used.
5642 ----------------------------------------
5643 13 April 2011. Summary of changes for version 20110413:
5645 1) ACPI CA Core Subsystem:
5647 Implemented support to execute a so-called "orphan" _REG method under the
5649 device. This change will force the execution of a _REG method underneath
5652 device even if there is no corresponding operation region of type
5653 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5654 compatible with Windows behavior. ACPICA BZ 875.
5656 Added more predefined methods that are eligible for automatic NULL
5658 element removal. This change adds another group of predefined names to
5661 of names that can be repaired by having NULL package elements dynamically
5662 removed. This group are those methods that return a single variable-
5664 package containing simple data types such as integers, buffers, strings.
5666 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5669 and _TZD. ACPICA BZ 914.
5671 Split and segregated all internal global lock functions to a new file,
5674 Updated internal address SpaceID for DataTable regions. Moved this
5677 id in preparation for ACPI 5.0 changes that will include some new space
5680 change should not affect user/host code.
5682 Example Code and Data Size: These are the sizes for the OS-independent
5684 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5686 the code includes the debug output trace mechanism and has a much larger
5691 Previous Release (VC 9.0):
5692 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5693 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5694 Current Release (VC 9.0):
5695 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5696 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5698 2) iASL Compiler/Disassembler and Tools:
5700 iASL/DTC: Major update for new grammar features. Allow generic data types
5702 custom ACPI tables. Field names are now optional. Any line can be split
5704 multiple lines using the continuation char (\). Large buffers now use
5706 continuation character(s) and no colon on the continuation lines. See the
5708 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5711 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5713 Since the parser stuffs a "zero" as the return value for these statements
5716 the underlying AML grammar), they were seen as "return with value" by the
5718 semantic checking. They are now seen correctly as "null" return
5721 iASL: Check if a_REG declaration has a corresponding Operation Region.
5723 check for each _REG to ensure that there is in fact a corresponding
5725 region declaration in the same scope. If not, the _REG method is not very
5727 since it probably won't be executed. ACPICA BZ 915.
5729 iASL/DTC: Finish support for expression evaluation. Added a new
5732 that implements c-style operator precedence and parenthesization. ACPICA
5736 Disassembler/DTC: Remove support for () and <> style comments in data
5739 that DTC has full expression support, we don't want to have comment
5742 start with a parentheses or a less-than symbol. Now, only the standard /*
5745 comments are supported, as well as the bracket [] comments.
5747 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5749 headers in the acpidump file. Update the header validation to support
5751 tables. Problem introduced in previous AcpiXtract version in the change
5753 support "wrong checksum" error messages emitted by acpidump utility.
5755 iASL: Add a * option to generate all template files (as a synonym for
5759 "iasl -T *" or "iasl -T ALL".
5761 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5763 abort the compiler on "fatal" errors, simply should abort the current
5765 This allows multiple compiles with a single (possibly wildcard) compiler
5768 ----------------------------------------
5769 16 March 2011. Summary of changes for version 20110316:
5771 1) ACPI CA Core Subsystem:
5773 Fixed a problem caused by a _PRW method appearing at the namespace root
5775 during the setup of wake GPEs. A fault could occur if a _PRW directly
5778 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5780 Implemented support for "spurious" Global Lock interrupts. On some
5782 global lock interrupt can occur without the pending flag being set. Upon
5785 interrupt, we now ensure that a thread is actually waiting for the lock
5787 signaling GL availability. Rafael Wysocki, Bob Moore.
5789 Example Code and Data Size: These are the sizes for the OS-independent
5791 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5793 the code includes the debug output trace mechanism and has a much larger
5798 Previous Release (VC 9.0):
5799 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5800 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5801 Current Release (VC 9.0):
5802 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5803 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5805 2) iASL Compiler/Disassembler and Tools:
5807 Implemented full support for the "SLIC" ACPI table. Includes support in
5809 header files, disassembler, table compiler, and template generator. Bob
5813 AcpiXtract: Correctly handle embedded comments and messages from
5815 Apparently some or all versions of acpidump will occasionally emit a
5818 "Wrong checksum", etc., into the dump file. This was causing problems for
5819 AcpiXtract. ACPICA BZ 905.
5821 iASL: Fix the Linux makefile by removing an inadvertent double file
5825 AcpiExec: Update installation of operation region handlers. Install one
5827 for a user-defined address space. This is used by the ASL test suite
5830 ----------------------------------------
5831 11 February 2011. Summary of changes for version 20110211:
5833 1) ACPI CA Core Subsystem:
5835 Added a mechanism to defer _REG methods for some early-installed
5837 Most user handlers should be installed before call to
5838 AcpiEnableSubsystem.
5839 However, Event handlers and region handlers should be installed after
5840 AcpiInitializeObjects. Override handlers for the "default" regions should
5842 installed early, however. This change executes all _REG methods for the
5843 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5844 chicken/egg issues between them. ACPICA BZ 848.
5846 Implemented an optimization for GPE detection. This optimization will
5848 ignore GPE registers that contain no enabled GPEs -- there is no need to
5849 read the register since this information is available internally. This
5850 becomes more important on machines with a large GPE space. ACPICA
5852 884. Lin Ming. Suggestion from Joe Liu.
5854 Removed all use of the highly unreliable FADT revision field. The
5856 number in the FADT has been found to be completely unreliable and cannot
5858 trusted. Only the actual table length can be used to infer the version.
5860 change updates the ACPICA core and the disassembler so that both no
5862 even look at the FADT version and instead depend solely upon the FADT
5865 Fix an unresolved name issue for the no-debug and no-error-message source
5866 generation cases. The _AcpiModuleName was left undefined in these cases,
5868 it is actually needed as a parameter to some interfaces. Define
5869 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5871 Split several large files (makefiles and project files updated)
5872 utglobal.c -> utdecode.c
5873 dbcomds.c -> dbmethod.c dbnames.c
5874 dsopcode.c -> dsargs.c dscontrol.c
5875 dsload.c -> dsload2.c
5876 aslanalyze.c -> aslbtypes.c aslwalks.c
5878 Example Code and Data Size: These are the sizes for the OS-independent
5879 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5880 debug version of the code includes the debug output trace mechanism and
5882 a much larger code and data size.
5884 Previous Release (VC 9.0):
5885 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5886 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5887 Current Release (VC 9.0):
5888 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5889 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5891 2) iASL Compiler/Disassembler and Tools:
5893 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5894 These are useful C-style macros with the standard definitions. ACPICA
5897 iASL/DTC: Added support for integer expressions and labels. Support for
5899 expressions for all integer fields in all ACPI tables. Support for labels
5901 "generic" portions of tables such as UEFI. See the iASL reference manual.
5903 Debugger: Added a command to display the status of global handlers. The
5904 "handlers" command will display op region, fixed event, and miscellaneous
5905 global handlers. installation status -- and for op regions, whether
5907 or user-installed handler will be used.
5909 iASL: Warn if reserved method incorrectly returns a value. Many
5911 names are defined such that they do not return a value. If implemented as
5913 method, issue a warning if such a name explicitly returns a value. ACPICA
5916 iASL: Added detection of GPE method name conflicts. Detects a conflict
5918 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5920 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5922 iASL/DTC: Fixed a couple input scanner issues with comments and line
5923 numbers. Comment remover could get confused and miss a comment ending.
5925 a problem with line counter maintenance.
5927 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5929 no need to abort on simple errors within a field definition.
5931 Debugger: Simplified the output of the help command. All help output now
5933 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5935 ----------------------------------------
5936 12 January 2011. Summary of changes for version 20110112:
5938 1) ACPI CA Core Subsystem:
5940 Fixed a race condition between method execution and namespace walks that
5942 possibly cause a fault. The problem was apparently introduced in version
5943 20100528 as a result of a performance optimization that reduces the
5946 namespace walks upon method exit by using the delete_namespace_subtree
5947 function instead of the delete_namespace_by_owner function used
5949 Bug is a missing namespace lock in the delete_namespace_subtree function.
5950 dana.myers@oracle.com
5952 Fixed several issues and a possible fault with the automatic "serialized"
5953 method support. History: This support changes a method to "serialized" on
5955 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5956 possibility that it cannot handle reentrancy. This fix repairs a couple
5958 issues seen in the field, especially on machines with many cores:
5960 1) Delete method children only upon the exit of the last thread,
5961 so as to not delete objects out from under other running threads
5962 (and possibly causing a fault.)
5963 2) Set the "serialized" bit for the method only upon the exit of the
5964 Last thread, so as to not cause deadlock when running threads
5966 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5967 so that there is no longer any confusion between the two.
5969 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5971 Debugger: Now lock the namespace for duration of a namespace dump.
5973 issues if the namespace is changing dynamically underneath the debugger.
5974 Especially affects temporary namespace nodes, since the debugger displays
5977 Updated the ordering of include files. The ACPICA headers should appear
5978 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5980 any necessary compiler-specific defines, etc. Affects the ACPI-related
5984 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5986 to all module headers and signons, including the Linux header. This
5988 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5991 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5992 project files for VC++ 6.0 are now obsolete. New project files can be
5994 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5997 Example Code and Data Size: These are the sizes for the OS-independent
5998 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5999 debug version of the code includes the debug output trace mechanism and
6001 much larger code and data size.
6003 Previous Release (VC 6.0):
6004 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6005 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6006 Current Release (VC 9.0):
6007 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6008 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6010 2) iASL Compiler/Disassembler and Tools:
6012 iASL: Added generic data types to the Data Table compiler. Add "generic"
6014 types such as UINT32, String, Unicode, etc., to simplify the generation
6016 platform-defined tables such as UEFI. Lin Ming.
6018 iASL: Added listing support for the Data Table Compiler. Adds listing
6020 (-l) to display actual binary output for each line of input code.
6022 ----------------------------------------
6023 09 December 2010. Summary of changes for version 20101209:
6025 1) ACPI CA Core Subsystem:
6027 Completed the major overhaul of the GPE support code that was begun in
6029 2010. Major features include: removal of _PRW execution in ACPICA (host
6030 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
6031 changes to existing interfaces, simplification of GPE handler operation,
6033 a handful of new interfaces:
6039 One new file, evxfgpe.c to consolidate all external GPE interfaces.
6041 See the ACPICA Programmer Reference for full details and programming
6042 information. See the new section 4.4 "General Purpose Event (GPE)
6044 for a full overview, and section 8.7 "ACPI General Purpose Event
6046 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
6048 Bob Moore, Rafael Wysocki.
6050 Implemented a new GPE feature for Windows compatibility, the "Implicit
6052 GPE Notify". This feature will automatically issue a Notify(2) on a
6054 when a Wake GPE is received if there is no corresponding GPE method or
6055 handler. ACPICA BZ 870.
6057 Fixed a problem with the Scope() operator during table parse and load
6059 During load phase (table load or method execution), the scope operator
6061 not enter the target into the namespace. Instead, it should open a new
6063 at the target location. Linux BZ 19462, ACPICA BZ 882.
6065 Example Code and Data Size: These are the sizes for the OS-independent
6066 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6067 debug version of the code includes the debug output trace mechanism and
6069 much larger code and data size.
6072 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6073 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6075 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6076 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6078 2) iASL Compiler/Disassembler and Tools:
6080 iASL: Relax the alphanumeric restriction on _CID strings. These strings
6082 "bus-specific" per the ACPI specification, and therefore any characters
6084 acceptable. The only checks that can be performed are for a null string
6086 perhaps for a leading asterisk. ACPICA BZ 886.
6088 iASL: Fixed a problem where a syntax error that caused a premature EOF
6089 condition on the source file emitted a very confusing error message. The
6090 premature EOF is now detected correctly. ACPICA BZ 891.
6092 Disassembler: Decode the AccessSize within a Generic Address Structure
6094 access, word access, etc.) Note, this field does not allow arbitrary bit
6095 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
6097 New: AcpiNames utility - Example namespace dump utility. Shows an example
6099 ACPICA configuration for a minimal namespace dump utility. Uses table and
6100 namespace managers, but no AML interpreter. Does not add any
6102 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
6103 partition and configure ACPICA. ACPICA BZ 883.
6105 AML Debugger: Increased the debugger buffer size for method return
6107 Was 4K, increased to 16K. Also enhanced error messages for debugger
6109 execution, including the buffer overflow case.
6111 ----------------------------------------
6112 13 October 2010. Summary of changes for version 20101013:
6114 1) ACPI CA Core Subsystem:
6116 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
6118 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
6119 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
6121 Changed the type of the predefined namespace object _TZ from ThermalZone
6123 Device. This was found to be confusing to the host software that
6125 the various thermal zones, since _TZ is not really a ThermalZone.
6128 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
6131 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
6132 string is "Windows 2006 SP2".
6134 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
6136 code automatically repairs _HID-related strings, this type of code is no
6137 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
6140 Example Code and Data Size: These are the sizes for the OS-independent
6141 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6142 debug version of the code includes the debug output trace mechanism and
6144 much larger code and data size.
6147 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6148 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6150 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6151 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6153 2) iASL Compiler/Disassembler and Tools:
6155 iASL: Implemented additional compile-time validation for _HID strings.
6157 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
6160 the string must be exactly seven or eight characters. For both _HID and
6162 strings, all characters must be alphanumeric. ACPICA BZ 874.
6164 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
6165 descriptors that are mostly or all zeros, with the expectation that they
6167 be filled in at runtime. iASL now allows this as long as there is a
6169 tag" (name) associated with the descriptor, which gives the ASL a handle
6170 needed to modify the descriptor. ACPICA BZ 873.
6172 Added single-thread support to the generic Unix application OSL.
6174 for iASL support, this change removes the use of semaphores in the
6176 threaded ACPICA tools/applications - increasing performance. The
6177 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
6178 option. ACPICA BZ 879.
6180 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
6182 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
6184 iASL: Moved all compiler messages to a new file, aslmessages.h.
6186 ----------------------------------------
6187 15 September 2010. Summary of changes for version 20100915:
6189 1) ACPI CA Core Subsystem:
6191 Removed the AcpiOsDerivePciId OSL interface. The various host
6193 of this function were not OS-dependent and are now obsolete and can be
6194 removed from all host OSLs. This function has been replaced by
6195 AcpiHwDerivePciId, which is now part of the ACPICA core code.
6196 AcpiHwDerivePciId has been implemented without recursion. Adds one new
6197 module, hwpci.c. ACPICA BZ 857.
6199 Implemented a dynamic repair for _HID and _CID strings. The following
6200 problems are now repaired at runtime: 1) Remove a leading asterisk in the
6201 string, and 2) the entire string is uppercased. Both repairs are in
6202 accordance with the ACPI specification and will simplify host driver
6206 The ACPI_THREAD_ID type is no longer configurable, internally it is now
6207 always UINT64. This simplifies the ACPICA code, especially any printf
6209 UINT64 is the only common data type for all thread_id types across all
6210 operating systems. It is now up to the host OSL to cast the native
6212 type to UINT64 before returning the value to ACPICA (via
6214 Lin Ming, Bob Moore.
6216 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
6218 keyword is not standard across compilers, and this type allows inline to
6220 configured on a per-compiler basis. Lin Ming.
6222 Made the system global AcpiGbl_SystemAwakeAndRunning publically
6224 Added an extern for this boolean in acpixf.h. Some hosts utilize this
6226 during suspend/restore operations. ACPICA BZ 869.
6228 All code that implements error/warning messages with the "ACPI:" prefix
6230 been moved to a new module, utxferror.c.
6232 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
6234 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
6236 Example Code and Data Size: These are the sizes for the OS-independent
6237 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6238 debug version of the code includes the debug output trace mechanism and
6240 much larger code and data size.
6243 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6244 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6246 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6247 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6249 2) iASL Compiler/Disassembler and Tools:
6251 iASL/Disassembler: Write ACPI errors to stderr instead of the output
6253 This keeps the output files free of random error messages that may
6255 from within the namespace/interpreter code. Used this opportunity to
6257 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
6258 866. Lin Ming, Bob Moore.
6260 Tools: update some printfs for ansi warnings on size_t. Handle width
6262 of size_t on 32-bit versus 64-bit generations. Lin Ming.
6264 ----------------------------------------
6265 06 August 2010. Summary of changes for version 20100806:
6267 1) ACPI CA Core Subsystem:
6269 Designed and implemented a new host interface to the _OSI support code.
6271 will allow the host to dynamically add or remove multiple _OSI strings,
6273 well as install an optional handler that is called for each _OSI
6275 Also added a new AML debugger command, 'osi' to display and modify the
6277 _OSI string table, and test support in the AcpiExec utility. See the
6279 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
6281 AcpiInstallInterface - Add an _OSI string.
6282 AcpiRemoveInterface - Delete an _OSI string.
6283 AcpiInstallInterfaceHandler - Install optional _OSI handler.
6285 AcpiOsValidateInterface - no longer used.
6287 source/components/utilities/utosi.c
6289 Re-introduced the support to enable multi-byte transfers for Embedded
6290 Controller (EC) operation regions. A reported problem was found to be a
6292 in the host OS, not in the multi-byte support. Previously, the maximum
6294 size passed to the EC operation region handler was a single byte. There
6296 often EC Fields larger than one byte that need to be transferred, and it
6298 useful for the EC driver to lock these as a single transaction. This
6300 enables single transfers larger than 8 bits. This effectively changes the
6301 access to the EC space from ByteAcc to AnyAcc, and will probably require
6302 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
6304 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
6306 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
6307 prototype in acpiosxf.h had the output value pointer as a (void *).
6308 It should be a (UINT64 *). This may affect some host OSL code.
6310 Fixed a couple problems with the recently modified Linux makefiles for
6312 and AcpiExec. These new makefiles place the generated object files in the
6313 local directory so that there can be no collisions between the files that
6315 shared between them that are compiled with different options.
6317 Example Code and Data Size: These are the sizes for the OS-independent
6318 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6319 debug version of the code includes the debug output trace mechanism and
6321 much larger code and data size.
6324 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6325 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6327 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6328 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6330 2) iASL Compiler/Disassembler and Tools:
6332 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
6334 namespace from and disassemble an entire group of AML files. Useful for
6335 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
6337 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
6339 iASL: Allow multiple invocations of -e option. This change allows
6341 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6345 ----------------------------------------
6346 02 July 2010. Summary of changes for version 20100702:
6348 1) ACPI CA Core Subsystem:
6350 Implemented several updates to the recently added GPE reference count
6351 support. The model for "wake" GPEs is changing to give the host OS
6353 control of these GPEs. Eventually, the ACPICA core will not execute any
6355 methods, since the host already must execute them. Also, additional
6357 were made to help ensure that the reference counts are kept in proper
6358 synchronization with reality. Rafael J. Wysocki.
6360 1) Ensure that GPEs are not enabled twice during initialization.
6361 2) Ensure that GPE enable masks stay in sync with the reference count.
6362 3) Do not inadvertently enable GPEs when writing GPE registers.
6363 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6364 interface. This interface will set or clear individual GPEs for wakeup.
6365 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6367 are now used for "runtime" GPEs only.
6369 Changed the behavior of the GPE install/remove handler interfaces. The
6372 no longer disabled during this process, as it was found to cause problems
6374 some machines. Rafael J. Wysocki.
6376 Reverted a change introduced in version 20100528 to enable Embedded
6377 Controller multi-byte transfers. This change was found to cause problems
6379 Index Fields and possibly Bank Fields. It will be reintroduced when these
6380 problems have been resolved.
6382 Fixed a problem with references to Alias objects within Package Objects.
6384 reference to an Alias within the definition of a Package was not always
6385 resolved properly. Aliases to objects like Processors, Thermal zones,
6387 were resolved to the actual object instead of a reference to the object
6390 should be. Package objects are only allowed to contain integer, string,
6391 buffer, package, and reference objects. Redhat bugzilla 608648.
6393 Example Code and Data Size: These are the sizes for the OS-independent
6394 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6395 debug version of the code includes the debug output trace mechanism and
6397 much larger code and data size.
6400 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6401 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6403 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6404 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6406 2) iASL Compiler/Disassembler and Tools:
6408 iASL: Implemented a new compiler subsystem to allow definition and
6409 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6411 are called "ACPI Data Tables", and the new compiler is the "Data Table
6412 Compiler". This compiler is intended to simplify the existing error-prone
6413 process of creating these tables for the BIOS, as well as allowing the
6414 disassembly, modification, recompilation, and override of existing ACPI
6416 tables. See the iASL User Guide for detailed information.
6418 iASL: Implemented a new Template Generator option in support of the new
6420 Table Compiler. This option will create examples of all known ACPI tables
6421 that can be used as the basis for table development. See the iASL
6422 documentation and the -T option.
6424 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6427 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6428 object files in the local directory so that there can be no collisions
6429 between the shared files between them that are generated with different
6432 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6434 the #define __APPLE__ to enable this support.
6436 ----------------------------------------
6437 28 May 2010. Summary of changes for version 20100528:
6439 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6440 available at www.acpi.info. This is primarily an errata release.
6442 1) ACPI CA Core Subsystem:
6444 Undefined ACPI tables: We are looking for the definitions for the
6446 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6448 Implemented support to enable multi-byte transfers for Embedded
6450 (EC) operation regions. Previously, the maximum data size passed to the
6452 operation region handler was a single byte. There are often EC Fields
6454 than one byte that need to be transferred, and it is useful for the EC
6456 to lock these as a single transaction. This change enables single
6458 larger than 8 bits. This effectively changes the access to the EC space
6460 ByteAcc to AnyAcc, and will probably require changes to the host OS
6462 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6464 transfers. Alexey Starikovskiy, Lin Ming
6466 Implemented a performance enhancement for namespace search and access.
6468 change enhances the performance of namespace searches and walks by adding
6470 backpointer to the parent in each namespace node. On large namespaces,
6472 change can improve overall ACPI performance by up to 9X. Adding a pointer
6474 each namespace node increases the overall size of the internal namespace
6476 about 5%, since each namespace entry usually consists of both a namespace
6477 node and an ACPI operand object. However, this is the first growth of the
6478 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6480 Implemented a performance optimization that reduces the number of
6482 walks. On control method exit, only walk the namespace if the method is
6484 to have created namespace objects outside of its local scope. Previously,
6486 entire namespace was traversed on each control method exit. This change
6488 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6491 Added support to truncate I/O addresses to 16 bits for Windows
6493 Some ASL code has been seen in the field that inadvertently has bits set
6494 above bit 15. This feature is optional and is enabled if the BIOS
6496 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6499 Added support to limit the maximum time for the ASL Sleep() operator. To
6500 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6501 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6504 Added run-time validation support for the _WDG and_WED Microsoft
6506 methods. These objects are defined by "Windows Instrumentation", and are
6508 part of the ACPI spec. ACPICA BZ 860.
6510 Expanded all statistic counters used during namespace and device
6511 initialization from 16 to 32 bits in order to support very large
6514 Replaced all instances of %d in printf format specifiers with %u since
6516 all integers in ACPICA are unsigned.
6518 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6522 Example Code and Data Size: These are the sizes for the OS-independent
6523 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6524 debug version of the code includes the debug output trace mechanism and
6526 much larger code and data size.
6529 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6530 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6532 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6533 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6535 2) iASL Compiler/Disassembler and Tools:
6537 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6538 methods. These objects are defined by "Windows Instrumentation", and are
6540 part of the ACPI spec. ACPICA BZ 860.
6542 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6543 option will disable the tracking mechanism, which improves performance
6546 AcpiExec: Restructured the command line options into -d (disable) and -e
6549 ----------------------------------------
6550 28 April 2010. Summary of changes for version 20100428:
6552 1) ACPI CA Core Subsystem:
6554 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6555 including FADT-based and GPE Block Devices, execute any _PRW methods in
6557 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6558 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6559 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6560 Devices. Provides compatibility with other ACPI implementations. Two new
6561 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6564 Fixed a regression introduced in version 20100331 within the table
6566 where initial table loading could fail. This was introduced in the fix
6568 AcpiReallocateRootTable. Also, renamed some of fields in the table
6570 data structures to clarify their meaning and use.
6572 Fixed a possible allocation overrun during internal object copy in
6573 AcpiUtCopySimpleObject. The original code did not correctly handle the
6575 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6578 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6579 possible access beyond end-of-allocation. Also, now fully validate
6581 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6583 Example Code and Data Size: These are the sizes for the OS-independent
6584 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6585 debug version of the code includes the debug output trace mechanism and
6587 much larger code and data size.
6590 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6591 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6593 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6594 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6596 2) iASL Compiler/Disassembler and Tools:
6598 iASL: Implemented Min/Max/Len/Gran validation for address resource
6599 descriptors. This change implements validation for the address fields
6601 are common to all address-type resource descriptors. These checks are
6602 implemented: Checks for valid Min/Max, length within the Min/Max window,
6603 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6605 table 6-40 in the ACPI 4.0a specification. Also split the large
6607 and aslrestype2.c files into five new files. ACPICA BZ 840.
6609 iASL: Added support for the _Wxx predefined names. This support was
6611 and these names were not recognized by the compiler as valid predefined
6612 names. ACPICA BZ 851.
6614 iASL: Added an error for all predefined names that are defined to return
6616 value and thus must be implemented as Control Methods. These include all
6618 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6619 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6621 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6623 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6625 dynamically loaded via the Load() operator. Also cleaned up output for
6628 ta and -tc options. ACPICA BZ 853.
6630 Tests: Added a new file with examples of extended iASL error checking.
6631 Demonstrates the advanced error checking ability of the iASL compiler.
6632 Available at tests/misc/badcode.asl.
6634 ----------------------------------------
6635 31 March 2010. Summary of changes for version 20100331:
6637 1) ACPI CA Core Subsystem:
6639 Completed a major update for the GPE support in order to improve support
6641 shared GPEs and to simplify both host OS and ACPICA code. Added a
6643 count mechanism to support shared GPEs that require multiple device
6645 Several external interfaces have changed. One external interface has been
6646 removed. One new external interface was added. Most of the GPE external
6647 interfaces now use the GPE spinlock instead of the events mutex (and the
6648 Flags parameter for many GPE interfaces has been removed.) See the
6650 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6652 Wysocki. ACPICA BZ 831.
6655 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6661 Implemented write support for DataTable operation regions. These regions
6663 defined via the DataTableRegion() operator. Previously, only read support
6665 implemented. The ACPI specification allows DataTableRegions to be
6669 Implemented a new subsystem option to force a copy of the DSDT to local
6670 memory. Optionally copy the entire DSDT to local memory (instead of
6672 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6674 the original DSDT, creating the need for this option. Default is FALSE,
6678 Implemented detection of a corrupted or replaced DSDT. This change adds
6679 support to detect a DSDT that has been corrupted and/or replaced from
6681 the OS (by firmware). This is typically catastrophic for the system, but
6683 been seen on some machines. Once this problem has been detected, the DSDT
6684 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6686 Fixed two problems with AcpiReallocateRootTable during the root table
6688 When copying the root table to the new allocation, the length used was
6689 incorrect. The new size was used instead of the current table size,
6691 too much data was copied. Also, the count of available slots for ACPI
6693 was not set correctly. Alexey Starikovskiy, Bob Moore.
6695 Example Code and Data Size: These are the sizes for the OS-independent
6696 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6697 debug version of the code includes the debug output trace mechanism and
6699 much larger code and data size.
6702 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6703 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6705 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6706 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6708 2) iASL Compiler/Disassembler and Tools:
6710 iASL: Implement limited typechecking for values returned from predefined
6711 control methods. The type of any returned static (unnamed) object is now
6712 validated. For example, Return(1). ACPICA BZ 786.
6714 iASL: Fixed a predefined name object verification regression. Fixes a
6716 introduced in version 20100304. An error is incorrectly generated if a
6717 predefined name is declared as a static named object with a value defined
6718 using the keywords "Zero", "One", or "Ones". Lin Ming.
6720 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6722 reducing the requested registry access rights. ACPICA BZ 842.
6724 Disassembler: fixed a possible fault when generating External()
6726 Introduced in commit ae7d6fd: Properly handle externals with parent-
6728 (carat). Fixes a string length allocation calculation. Lin Ming.
6730 ----------------------------------------
6731 04 March 2010. Summary of changes for version 20100304:
6733 1) ACPI CA Core Subsystem:
6735 Fixed a possible problem with the AML Mutex handling function
6736 AcpiExReleaseMutex where the function could fault under the very rare
6737 condition when the interpreter has blocked, the interpreter lock is
6739 the interpreter is then reentered via the same thread, and attempts to
6740 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6744 Implemented additional configuration support for the AML "Debug Object".
6745 Output from the debug object can now be enabled via a global variable,
6746 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6748 This debug output is now available in the release version of ACPICA
6750 of just the debug version. Also, the entire debug output module can now
6752 configured out of the ACPICA build if desired. One new file added,
6753 executer/exdebug.c. Lin Ming, Bob Moore.
6755 Added header support for the ACPI MCHI table (Management Controller Host
6756 Interface Table). This table was added in ACPI 4.0, but the defining
6758 has only recently become available.
6760 Standardized output of integer values for ACPICA warnings/errors. Always
6762 0x prefix for hex output, always use %u for unsigned integer decimal
6764 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6766 invocations.) These invocations were converted from the original
6767 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6769 Example Code and Data Size: These are the sizes for the OS-independent
6770 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6771 debug version of the code includes the debug output trace mechanism and
6773 much larger code and data size.
6776 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6777 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6779 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6780 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6782 2) iASL Compiler/Disassembler and Tools:
6784 iASL: Implemented typechecking support for static (non-control method)
6785 predefined named objects that are declared with the Name() operator. For
6786 example, the type of this object is now validated to be of type Integer:
6787 Name(_BBN, 1). This change migrates the compiler to using the core
6789 name table instead of maintaining a local version. Added a new file,
6790 aslpredef.c. ACPICA BZ 832.
6792 Disassembler: Added support for the ACPI 4.0 MCHI table.
6794 ----------------------------------------
6795 21 January 2010. Summary of changes for version 20100121:
6797 1) ACPI CA Core Subsystem:
6799 Added the 2010 copyright to all module headers and signons. This affects
6800 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6801 tools/utilities, and the test suites.
6803 Implemented a change to the AcpiGetDevices interface to eliminate
6805 invocations of the _STA method. In the case where a specific _HID is
6806 requested, do not run _STA until a _HID match is found. This eliminates
6807 potentially dozens of _STA calls during a search for a particular
6809 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6811 Implemented an additional repair for predefined method return values.
6813 to repair unexpected NULL elements within returned Package objects.
6816 Integer of value zero, a NULL String, or a zero-length Buffer as
6818 ACPICA BZ 818. Lin Ming, Bob Moore.
6820 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6822 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6824 64-bit AML integers). It is now obsolete and this change removes it from
6826 ACPICA code base, replaced by UINT64. The original typedef has been
6828 for now for compatibility with existing device driver code. ACPICA BZ
6831 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6833 the parse tree object.
6835 Added additional warning options for the gcc-4 generation. Updated the
6837 accordingly. This includes some code restructuring to eliminate
6839 code, elimination of some gotos, elimination of unused return values,
6841 additional casting, and removal of redundant declarations.
6843 Example Code and Data Size: These are the sizes for the OS-independent
6844 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6845 debug version of the code includes the debug output trace mechanism and
6847 much larger code and data size.
6850 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6851 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6853 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6854 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6856 2) iASL Compiler/Disassembler and Tools:
6858 No functional changes for this release.
6860 ----------------------------------------
6861 14 December 2009. Summary of changes for version 20091214:
6863 1) ACPI CA Core Subsystem:
6865 Enhanced automatic data type conversions for predefined name repairs.
6867 change expands the automatic repairs/conversions for predefined name
6869 values to make Integers, Strings, and Buffers fully interchangeable.
6872 Buffer can be converted to a Package of Integers if necessary. The
6874 module was completely restructured. Lin Ming, Bob Moore.
6876 Implemented automatic removal of null package elements during predefined
6878 repairs. This change will automatically remove embedded and trailing NULL
6879 package elements from returned package objects that are defined to
6882 variable number of sub-packages. The driver is then presented with a
6884 with no null elements to deal with. ACPICA BZ 819.
6886 Implemented a repair for the predefined _FDE and _GTM names. The expected
6887 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6889 possible problems (both seen in the field), where a package of integers
6891 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6894 Implemented additional module-level code support. This change will
6896 execute module-level code that is not at the root of the namespace (under
6898 Device object, etc.). Now executes the code within the current scope
6900 of the root. ACPICA BZ 762. Lin Ming.
6902 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6904 problem where mutex errors can occur when running a _REG method that is
6906 the same scope as a method-defined operation region or an operation
6908 under a module-level IF block. This type of code is rare, so the problem
6910 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6912 Fixed a possible memory leak during module-level code execution. An
6914 could be leaked for each block of executed module-level code if the
6915 interpreter slack mode is enabled This change deletes any implicitly
6917 object from the module-level code block. Lin Ming.
6919 Removed messages for successful predefined repair(s). The repair
6921 was considered too wordy. Now, messages are only unconditionally emitted
6923 the return object cannot be repaired. Existing messages for successful
6924 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6927 Example Code and Data Size: These are the sizes for the OS-independent
6928 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6929 debug version of the code includes the debug output trace mechanism and
6931 much larger code and data size.
6934 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6935 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6937 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6938 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6940 2) iASL Compiler/Disassembler and Tools:
6942 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6944 were no longer automatically removed at the termination of the compile.
6946 acpiexec: Implemented the -f option to specify default region fill value.
6947 This option specifies the value used to initialize buffers that simulate
6948 operation regions. Default value is zero. Useful for debugging problems
6950 depend on a specific initial value for a region or field.
6952 ----------------------------------------
6953 12 November 2009. Summary of changes for version 20091112:
6955 1) ACPI CA Core Subsystem:
6957 Implemented a post-order callback to AcpiWalkNamespace. The existing
6958 interface only has a pre-order callback. This change adds an additional
6959 parameter for a post-order callback which will be more useful for bus
6961 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6963 Modified the behavior of the operation region memory mapping cache for
6964 SystemMemory. Ensure that the memory mappings created for operation
6966 do not cross 4K page boundaries. Crossing a page boundary while mapping
6967 regions can cause kernel warnings on some hosts if the pages have
6969 attributes. Such regions are probably BIOS bugs, and this is the
6971 Linux BZ 14445. Lin Ming.
6973 Implemented an automatic repair for predefined methods that must return
6974 sorted lists. This change will repair (by sorting) packages returned by
6976 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6978 and do not contain NULL package elements. Adds one new file,
6979 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6981 Fixed a possible fault during predefined name validation if a return
6983 object contains NULL elements. Also adds a warning if a NULL element is
6984 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6986 include repair or removal of all such NULL elements where possible.
6988 Implemented additional module-level executable AML code support. This
6990 will execute module-level code that is not at the root of the namespace
6991 (under a Device object, etc.) at table load time. Module-level executable
6993 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6995 Implemented a new internal function to create Integer objects. This
6997 simplifies miscellaneous object creation code. ACPICA BZ 823.
6999 Reduced the severity of predefined repair messages, Warning to Info.
7001 the object was successfully repaired, a warning is too severe. Reduced to
7003 info message for now. These messages may eventually be changed to debug-
7007 Example Code and Data Size: These are the sizes for the OS-independent
7008 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7009 debug version of the code includes the debug output trace mechanism and
7011 much larger code and data size.
7014 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7015 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7017 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7018 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7020 2) iASL Compiler/Disassembler and Tools:
7022 iASL: Implemented Switch() with While(1) so that Break works correctly.
7024 change correctly implements the Switch operator with a surrounding
7026 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
7028 iASL: Added a message if a package initializer list is shorter than
7030 length. Adds a new remark for a Package() declaration if an initializer
7032 exists, but is shorter than the declared length of the package. Although
7033 technically legal, this is probably a coding error and it is seen in the
7034 field. ACPICA BZ 815. Lin Ming, Bob Moore.
7036 iASL: Fixed a problem where the compiler could fault after the maximum
7038 of errors was reached (200).
7040 acpixtract: Fixed a possible warning for pointer cast if the compiler
7042 level set very high.
7044 ----------------------------------------
7045 13 October 2009. Summary of changes for version 20091013:
7047 1) ACPI CA Core Subsystem:
7049 Fixed a problem where an Operation Region _REG method could be executed
7051 than once. If a custom address space handler is installed by the host
7053 the "initialize operation regions" phase of the ACPICA initialization,
7055 _REG methods for that address space could be executed twice. This change
7056 fixes the problem. ACPICA BZ 427. Lin Ming.
7058 Fixed a possible memory leak for the Scope() ASL operator. When the exact
7059 invocation of "Scope(\)" is executed (change scope to root), one internal
7060 operand object was leaked. Lin Ming.
7062 Implemented a run-time repair for the _MAT predefined method. If the _MAT
7063 return value is defined as a Field object in the AML, and the field
7064 size is less than or equal to the default width of an integer (32 or
7066 can incorrectly return an Integer instead of a Buffer. ACPICA now
7067 automatically repairs this problem. ACPICA BZ 810.
7069 Implemented a run-time repair for the _BIF and _BIX predefined methods.
7071 "OEM Information" field is often incorrectly returned as an Integer with
7072 value zero if the field is not supported by the platform. This is due to
7074 ambiguity in the ACPI specification. The field should always be a string.
7075 ACPICA now automatically repairs this problem by returning a NULL string
7076 within the returned Package. ACPICA BZ 807.
7078 Example Code and Data Size: These are the sizes for the OS-independent
7079 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7080 debug version of the code includes the debug output trace mechanism and
7082 much larger code and data size.
7085 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7086 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7088 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7089 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7091 2) iASL Compiler/Disassembler and Tools:
7093 Disassembler: Fixed a problem where references to external symbols that
7094 contained one or more parent-prefixes (carats) were not handled
7096 possibly causing a fault. ACPICA BZ 806. Lin Ming.
7098 Disassembler: Restructured the code so that all functions that handle
7099 external symbols are in a single module. One new file is added,
7102 AML Debugger: Added a max count argument for the Batch command (which
7103 executes multiple predefined methods within the namespace.)
7105 iASL: Updated the compiler documentation (User Reference.) Available at
7106 http://www.acpica.org/documentation/. ACPICA BZ 750.
7108 AcpiXtract: Updated for Lint and other formatting changes. Close all open
7111 ----------------------------------------
7112 03 September 2009. Summary of changes for version 20090903:
7114 1) ACPI CA Core Subsystem:
7116 For Windows Vista compatibility, added the automatic execution of an _INI
7117 method located at the namespace root (\_INI). This method is executed at
7118 table load time. This support is in addition to the automatic execution
7120 \_SB._INI. Lin Ming.
7122 Fixed a possible memory leak in the interpreter for AML package objects
7124 the package initializer list is longer than the defined size of the
7126 This apparently can only happen if the BIOS changes the package size on
7128 fly (seen in a _PSS object), as ASL compilers do not allow this. The
7129 interpreter will truncate the package to the defined size (and issue an
7131 message), but previously could leave the extra objects undeleted if they
7133 pre-created during the argument processing (such is the case if the
7135 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
7137 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
7138 This has been reported in the field. Previously, ACPICA would zero out
7140 buffer/string. Now, the operation is treated as a noop. Provides Windows
7141 compatibility. ACPICA BZ 803. Lin Ming.
7143 Removed an extraneous error message for ASL constructs of the form
7144 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
7146 are seen in many BIOSs and are once again treated as NOOPs and no error
7148 emitted when they are encountered. ACPICA BZ 785.
7150 Fixed an extraneous warning message if a _DSM reserved method returns a
7151 Package object. _DSM can return any type of object, so validation on the
7152 return type cannot be performed. ACPICA BZ 802.
7154 Example Code and Data Size: These are the sizes for the OS-independent
7155 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7156 debug version of the code includes the debug output trace mechanism and
7158 much larger code and data size.
7161 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7162 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7164 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7165 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7167 2) iASL Compiler/Disassembler and Tools:
7169 iASL: Fixed a problem with the use of the Alias operator and Resource
7170 Templates. The correct alias is now constructed and no error is emitted.
7173 iASL: Implemented the -I option to specify additional search directories
7175 include files. Allows multiple additional search paths for include files.
7176 Directories are searched in the order specified on the command line
7178 the local directory is searched.) ACPICA BZ 800.
7180 iASL: Fixed a problem where the full pathname for include files was not
7181 emitted for warnings/errors. This caused the IDE support to not work
7182 properly. ACPICA BZ 765.
7184 iASL: Implemented the -@ option to specify a Windows-style response file
7185 containing additional command line options. ACPICA BZ 801.
7187 AcpiExec: Added support to load multiple AML files simultaneously (such
7190 DSDT and multiple SSDTs). Also added support for wildcards within the AML
7191 pathname. These features allow all machine tables to be easily loaded and
7192 debugged together. ACPICA BZ 804.
7194 Disassembler: Added missing support for disassembly of HEST table Error
7198 ----------------------------------------
7199 30 July 2009. Summary of changes for version 20090730:
7201 The ACPI 4.0 implementation for ACPICA is complete with this release.
7203 1) ACPI CA Core Subsystem:
7205 ACPI 4.0: Added header file support for all new and changed ACPI tables.
7206 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
7208 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
7210 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
7212 have been some ACPI 4.0 changes to other existing tables. Split the large
7213 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
7215 ACPI 4.0: Implemented predefined name validation for all new names. There
7217 31 new names in ACPI 4.0. The predefined validation module was split into
7219 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
7221 Implemented support for so-called "module-level executable code". This is
7222 executable AML code that exists outside of any control method and is
7224 to be executed at table load time. Although illegal since ACPI 2.0, this
7226 of code still exists and is apparently still being created. Blocks of
7228 code are now detected and executed as intended. Currently, the code
7230 must exist under either an If, Else, or While construct; these are the
7231 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
7233 Implemented an automatic dynamic repair for predefined names that return
7234 nested Package objects. This applies to predefined names that are defined
7236 return a variable-length Package of sub-packages. If the number of sub-
7237 packages is one, BIOS code is occasionally seen that creates a simple
7239 package with no sub-packages. This code attempts to fix the problem by
7240 wrapping a new package object around the existing package. These methods
7242 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
7246 Fixed a regression introduced in 20090625 for the AcpiGetDevices
7248 The _HID/_CID matching was broken and no longer matched IDs correctly.
7252 Fixed a problem with AcpiReset where the reset would silently fail if the
7253 register was one of the protected I/O ports. AcpiReset now bypasses the
7255 validation mechanism. This may eventually be driven into the
7259 Fixed a regression related to the recent update of the AcpiRead/Write
7260 interfaces. A sleep/suspend could fail if the optional PM2 Control
7262 does not exist during an attempt to write the Bus Master Arbitration bit.
7263 (However, some hosts already delete the code that writes this bit, and
7265 code may in fact be obsolete at this date.) ACPICA BZ 799.
7267 Fixed a problem where AcpiTerminate could fault if inadvertently called
7269 in succession. ACPICA BZ 795.
7271 Example Code and Data Size: These are the sizes for the OS-independent
7272 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7273 debug version of the code includes the debug output trace mechanism and
7275 much larger code and data size.
7278 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7279 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7281 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7282 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7284 2) iASL Compiler/Disassembler and Tools:
7286 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
7287 changes to existing tables. ACPICA BZ 775.
7289 ----------------------------------------
7290 25 June 2009. Summary of changes for version 20090625:
7292 The ACPI 4.0 Specification was released on June 16 and is available at
7293 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
7294 continue for the next few releases.
7296 1) ACPI CA Core Subsystem:
7298 ACPI 4.0: Implemented interpreter support for the IPMI operation region
7299 address space. Includes support for bi-directional data buffers and an
7301 address space handler (to be installed by an IPMI device driver.) ACPICA
7305 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
7307 support in both the header files and the disassembler.
7309 Completed a major update for the AcpiGetObjectInfo external interface.
7311 - Support for variable, unlimited length HID, UID, and CID strings.
7312 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
7314 - Call the _SxW power methods on behalf of a device object.
7315 - Determine if a device is a PCI root bridge.
7316 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
7317 These changes will require an update to all callers of this interface.
7319 the updated ACPICA Programmer Reference for details. One new source file
7321 been added - utilities/utids.c. ACPICA BZ 368, 780.
7323 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
7324 transfers. The Value parameter has been extended from 32 bits to 64 bits
7326 order to support new ACPI 4.0 tables. These changes will require an
7329 all callers of these interfaces. See the ACPICA Programmer Reference for
7330 details. ACPICA BZ 768.
7332 Fixed several problems with AcpiAttachData. The handler was not invoked
7334 the host node was deleted. The data sub-object was not automatically
7336 when the host node was deleted. The interface to the handler had an
7338 parameter, this was removed. ACPICA BZ 778.
7340 Enhanced the function that dumps ACPI table headers. All non-printable
7341 characters in the string fields are now replaced with '?' (Signature,
7343 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7344 these fields are occasionally seen in the field. ACPICA BZ 788.
7346 Fixed a problem with predefined method repair code where the code that
7347 attempts to repair/convert an object of incorrect type is only executed
7349 the first time the predefined method is called. The mechanism that
7351 warnings on subsequent calls was interfering with the repair mechanism.
7354 Fixed a possible memory leak in the predefined validation/repair code
7357 buffer is automatically converted to an expected string object.
7359 Removed obsolete 16-bit files from the distribution and from the current
7361 tree head. ACPICA BZ 776.
7363 Example Code and Data Size: These are the sizes for the OS-independent
7364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7365 debug version of the code includes the debug output trace mechanism and
7367 much larger code and data size.
7370 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7371 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7373 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7374 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7376 2) iASL Compiler/Disassembler and Tools:
7378 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7379 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7381 ACPI 4.0: iASL - implemented compile-time validation support for all new
7382 predefined names and control methods (31 total). ACPICA BZ 769.
7384 ----------------------------------------
7385 21 May 2009. Summary of changes for version 20090521:
7387 1) ACPI CA Core Subsystem:
7389 Disabled the preservation of the SCI enable bit in the PM1 control
7391 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7394 a "preserved" bit - "OSPM always preserves this bit position", section
7395 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7396 because the bit needs to be explicitly set by the OS as a workaround. No
7397 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7398 attempts to preserve this bit.
7400 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7401 incorrectly formed _PRT package could cause a fault. Added validation to
7402 ensure that each package element is actually a sub-package.
7404 Implemented a new interface to install or override a single control
7406 AcpiInstallMethod. This interface is useful when debugging in order to
7408 an existing method or to install a missing method without having to
7410 the entire ACPI table. See the ACPICA Programmer Reference for use and
7411 examples. Lin Ming, Bob Moore.
7413 Fixed several reference count issues with the DdbHandle object that is
7414 created from a Load or LoadTable operator. Prevent premature deletion of
7416 object. Also, mark the object as invalid once the table has been
7418 This is needed because the handle itself may not be deleted after the
7420 unload, depending on whether it has been stored in a named object by the
7423 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7424 mutexes of the same sync level are acquired but then not released in
7426 opposite order, the internally maintained Current Sync Level becomes
7428 and can cause subsequent execution errors. ACPICA BZ 471.
7430 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7431 specification has been changed to make the SyncLevel for mutex objects
7433 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7435 same as the current sync level. This makes more sense than the previous
7437 (SyncLevel less than or equal). This change updates the code to match the
7440 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7442 (local) cache must be locked during all cache object deletions. Andrew
7445 Updated the Load operator to use operation region interfaces. This
7447 direct memory mapping with region access calls. Now, all region accesses
7449 through the installed region handler as they should.
7451 Simplified and optimized the NsGetNextNode function. Reduced parameter
7453 and reduced code for this frequently used function.
7455 Example Code and Data Size: These are the sizes for the OS-independent
7456 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7457 debug version of the code includes the debug output trace mechanism and
7459 much larger code and data size.
7462 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7463 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7465 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7466 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7468 2) iASL Compiler/Disassembler and Tools:
7470 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7472 with sub-table disassembly and handling invalid sub-tables. Attempt
7474 after an invalid sub-table ID.
7476 ----------------------------------------
7477 22 April 2009. Summary of changes for version 20090422:
7479 1) ACPI CA Core Subsystem:
7481 Fixed a compatibility issue with the recently released I/O port
7483 mechanism. For windows compatibility, 1) On a port protection violation,
7484 simply ignore the request and do not return an exception (allow the
7486 method to continue execution.) 2) If only part of the request overlaps a
7487 protected port, read/write the individual ports that are not protected.
7491 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7493 breaks into the AML debugger if the debugger is present. This matches the
7494 ACPI-defined behavior.
7496 Fixed several possible warnings related to the use of the configurable
7497 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7498 pointer with no warnings. Also fixes several warnings in printf-like
7499 statements for the 64-bit build when the type is configured as a pointer.
7502 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7504 warning options.) Examples include printf formats, aliasing, unused
7506 missing prototypes, missing switch default statements, use of non-ANSI
7507 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7509 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7511 Example Code and Data Size: These are the sizes for the OS-independent
7512 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7513 debug version of the code includes the debug output trace mechanism and
7515 much larger code and data size.
7518 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7519 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7521 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7522 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7524 2) iASL Compiler/Disassembler and Tools:
7526 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7531 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7533 correctly digest Windows/DOS formatted files (with CR/LF).
7535 iASL: Added a new option for "quiet mode" (-va) that produces only the
7536 compilation summary, not individual errors and warnings. Useful for large
7539 AcpiExec: Implemented a new option (-z) to enable a forced
7541 timeout that can be used to detect hang conditions during execution of
7543 code (includes both internal semaphores and AML-defined mutexes and
7546 Added new makefiles for the generation of acpica in a generic unix-like
7547 environment. These makefiles are intended to generate the acpica tools
7549 utilities from the original acpica git source tree structure.
7551 Test Suites: Updated and cleaned up the documentation files. Updated the
7552 copyrights to 2009, affecting all source files. Use the new version of
7554 with quiet mode. Increased the number of available semaphores in the
7556 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7558 an alternate implementation of the semaphore timeout to allow aslts to
7559 execute fully on Cygwin.
7561 ----------------------------------------
7562 20 March 2009. Summary of changes for version 20090320:
7564 1) ACPI CA Core Subsystem:
7566 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7568 unloads. Added a reader/writer locking mechanism to allow multiple
7570 namespace walks (readers), but block a dynamic table unload until it can
7572 exclusive write access to the namespace. This fixes a problem where a
7574 unload could (possibly catastrophically) delete the portion of the
7576 that is currently being examined by a walk. Adds a new file, utlock.c,
7578 implements the reader/writer lock mechanism. ACPICA BZ 749.
7580 Fixed a regression introduced in version 20090220 where a change to the
7582 handling could cause the ACPICA subsystem to access non-existent I/O
7585 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7587 FADT can contain both 32-bit and 64-bit versions of these addresses.
7588 Previously, the 64-bit versions were favored, meaning that if both 32 and
7590 versions were valid, but not equal, the 64-bit version was used. This was
7591 found to cause some machines to fail. Now, in this case, the 32-bit
7593 is used instead. This now matches the Windows behavior.
7595 Implemented a new mechanism to protect certain I/O ports. Provides
7597 compatibility and protects the standard PC I/O ports from access via AML
7598 code. Adds a new file, hwvalid.c
7600 Fixed a possible extraneous warning message from the FADT support. The
7601 message warns of a 32/64 length mismatch between the legacy and GAS
7602 definitions for a register.
7604 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7606 made obsolete by the port protection mechanism above. It was previously
7608 to validate the entire address range of an operation region, which could
7610 incorrect if the range included illegal ports, but fields within the
7611 operation region did not actually access those ports. Validation is now
7612 performed on a per-field basis instead of the entire region.
7614 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7615 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7617 means a read/modify/write when writing to the register. However, for
7619 registers, writing a one means clear the event. Writing a zero means
7621 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7623 and the ACPICA code now simply always writes a zero to the ignored bit.
7625 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7627 per the ACPI specification, for the control registers, preserve
7628 (read/modify/write) all bits that are defined as either reserved or
7631 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7632 When reading the register, zero the write-only bits as per the ACPI spec.
7633 ACPICA BZ 443. Lin Ming.
7635 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7636 wants to reply true to this request. The Windows strings are the only
7638 through the AML that are tested and known to work properly.
7641 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7642 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7644 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7645 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7647 2) iASL Compiler/Disassembler and Tools:
7649 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7653 ----------------------------------------
7654 20 February 2009. Summary of changes for version 20090220:
7656 1) ACPI CA Core Subsystem:
7658 Optimized the ACPI register locking. Removed locking for reads from the
7660 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7662 not required when reading the single-bit registers. The
7663 AcpiGetRegisterUnlocked function is no longer needed and has been
7665 This will improve performance for reads on these registers. ACPICA BZ
7668 Fixed the parameter validation for AcpiRead/Write. Now return
7669 AE_BAD_PARAMETER if the input register pointer is null, and
7672 the register has an address of zero. Previously, these cases simply
7674 AE_OK. For optional registers such as PM1B status/enable/control, the
7676 should check for a valid register address before calling. ACPICA BZ 748.
7678 Renamed the external ACPI bit register access functions. Renamed
7679 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7680 functions. The new names are AcpiReadBitRegister and
7681 AcpiWriteBitRegister.
7682 Also, restructured the code for these functions by simplifying the code
7684 and condensing duplicate code to reduce code size.
7686 Added new functions to transparently handle the possibly split PM1 A/B
7687 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7689 now handle the split registers for PM1 Status, Enable, and Control.
7694 Added a function to handle the PM1 control registers,
7695 AcpiHwWritePm1Control.
7696 This function writes both of the PM1 control registers (A/B). These
7698 are different than the PM1 A/B status and enable registers in that
7700 values can be written to the A/B registers. Most notably, the SLP_TYP
7702 can be different, as per the values returned from the _Sx predefined
7705 Removed an extra register write within AcpiHwClearAcpiStatus. This
7707 was writing an optional PM1B status register twice. The existing call to
7709 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7711 register. ACPICA BZ 751.
7713 Split out the PM1 Status registers from the FADT. Added new globals for
7715 registers (A/B), similar to the way the PM1 Enable registers are handled.
7716 Instead of overloading the FADT Event Register blocks. This makes the
7718 clearer and less prone to error.
7720 Fixed the warning message for when the platform contains too many ACPI
7722 for the default size of the global root table data structure. The
7724 for the truncation value was incorrect.
7726 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7727 obsolete macro, since it is now a simple reference to ->common.type.
7729 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7731 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7732 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7733 simply SLEEP_TYPE. ACPICA BZ 754.
7735 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7736 function is only needed on 64-bit host operating systems and is thus not
7737 included for 32-bit hosts.
7739 Debug output: print the input and result for invocations of the _OSI
7741 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7743 verbosity of this debug level. Len Brown.
7745 Example Code and Data Size: These are the sizes for the OS-independent
7746 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7747 debug version of the code includes the debug output trace mechanism and
7749 much larger code and data size.
7752 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7753 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7755 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7756 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7758 2) iASL Compiler/Disassembler and Tools:
7760 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7761 various legal performance profiles.
7763 ----------------------------------------
7764 23 January 2009. Summary of changes for version 20090123:
7766 1) ACPI CA Core Subsystem:
7768 Added the 2009 copyright to all module headers and signons. This affects
7769 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7770 the tools/utilities.
7772 Implemented a change to allow the host to override any ACPI table,
7774 dynamically loaded tables. Previously, only the DSDT could be replaced by
7776 host. With this change, the AcpiOsTableOverride interface is called for
7778 table found in the RSDT/XSDT during ACPICA initialization, and also
7780 a table is dynamically loaded via the AML Load operator.
7782 Updated FADT flag definitions, especially the Boot Architecture flags.
7784 Debugger: For the Find command, automatically pad the input ACPI name
7786 underscores if the name is shorter than 4 characters. This enables a
7788 with the actual namespace entry which is itself padded with underscores.
7790 Example Code and Data Size: These are the sizes for the OS-independent
7791 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7792 debug version of the code includes the debug output trace mechanism and
7794 much larger code and data size.
7797 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7798 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7800 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7801 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7803 2) iASL Compiler/Disassembler and Tools:
7805 Fix build error under Bison-2.4.
7807 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7809 flags. Now decode all flags, regardless of the FADT version. Flag output
7810 includes the FADT version which first defined each flag.
7812 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7814 DSDT). Windows only.
7816 ----------------------------------------
7817 04 December 2008. Summary of changes for version 20081204:
7819 1) ACPI CA Core Subsystem:
7821 The ACPICA Programmer Reference has been completely updated and revamped
7823 this release. This includes updates to the external interfaces, OSL
7824 interfaces, the overview sections, and the debugger reference.
7826 Several new ACPICA interfaces have been implemented and documented in the
7827 programmer reference:
7828 AcpiReset - Writes the reset value to the FADT-defined reset register.
7829 AcpiDisableAllGpes - Disable all available GPEs.
7830 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7831 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7832 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7833 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7834 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7836 Most of the public ACPI hardware-related interfaces have been moved to a
7838 file, components/hardware/hwxface.c
7840 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7841 register lengths within the FADT are now used, and the low level ACPI
7842 register access no longer hardcodes the ACPI register lengths. Given that
7843 there may be some risk in actually trusting the FADT register lengths, a
7845 time option was added to fall back to the default hardcoded lengths if
7847 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7848 option is set to true for now, and a warning is issued if a suspicious
7850 register length is overridden with the default value.
7852 Fixed a reference count issue in NsRepairObject. This problem was
7854 in version 20081031 as part of a fix to repair Buffer objects within
7857 Added semaphore support to the Linux/Unix application OS-services layer
7858 (OSL). ACPICA BZ 448. Lin Ming.
7860 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7862 be implemented in the OSL, or will binary semaphores be used instead.
7864 Example Code and Data Size: These are the sizes for the OS-independent
7865 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7866 debug version of the code includes the debug output trace mechanism and
7868 much larger code and data size.
7871 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7872 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7874 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7875 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7877 2) iASL Compiler/Disassembler and Tools:
7879 iASL: Completed the '-e' option to include additional ACPI tables in
7882 aid with disassembly and External statement generation. ACPICA BZ 742.
7886 iASL: Removed the "named object in while loop" error. The compiler cannot
7887 determine how many times a loop will execute. ACPICA BZ 730.
7889 Disassembler: Implemented support for FADT revision 2 (MS extension).
7893 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7896 ----------------------------------------
7897 31 October 2008. Summary of changes for version 20081031:
7899 1) ACPI CA Core Subsystem:
7901 Restructured the ACPICA header files into public/private. acpi.h now
7903 only the "public" acpica headers. All other acpica headers are "private"
7905 should not be included by acpica users. One new file, accommon.h is used
7907 include the commonly used private headers for acpica code generation.
7909 plans include moving all private headers to a new subdirectory.
7911 Implemented an automatic Buffer->String return value conversion for
7912 predefined ACPI methods. For these methods (such as _BIF), added
7914 conversion for return objects that are required to be a String, but a
7916 was found instead. This can happen when reading string battery data from
7918 operation region, because it used to be difficult to convert the data
7920 buffer to string from within the ASL. Ensures that the host OS is
7922 with a valid null-terminated string. Linux BZ 11822.
7924 Updated the FACS waking vector interfaces. Split
7925 AcpiSetFirmwareWakingVector
7926 into two: one for the 32-bit vector, another for the 64-bit vector. This
7928 required because the host OS must setup the wake much differently for
7930 vector (real vs. protected mode, etc.) and the interface itself should
7933 deciding which vector to use. Also, eliminated the
7934 GetFirmwareWakingVector
7935 interface, as it served no purpose (only the firmware reads the vector,
7937 only writes the vector.) ACPICA BZ 731.
7939 Implemented a mechanism to escape infinite AML While() loops. Added a
7941 counter to force exit from AML While loops if the count becomes too
7943 This can occur in poorly written AML when the hardware does not respond
7944 within a while loop and the loop does not implement a timeout. The
7946 loop count is configurable. A new exception code is returned when a loop
7948 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7950 Optimized the execution of AML While loops. Previously, a control state
7951 object was allocated and freed for each execution of the loop. The
7952 optimization is to simply reuse the control state for each iteration.
7954 speeds up the raw loop execution time by about 5%.
7956 Enhanced the implicit return mechanism. For Windows compatibility, return
7958 implicit integer of value zero for methods that contain no executable
7960 Such methods are seen in the field as stubs (presumably), and can cause
7961 drivers to fail if they expect a return value. Lin Ming.
7963 Allow multiple backslashes as root prefixes in namepaths. In a fully
7964 qualified namepath, allow multiple backslash prefixes. This can happen
7966 is seen in the field) because of the use of a double-backslash in strings
7967 (since backslash is the escape character) causing confusion. ACPICA BZ
7971 Emit a warning if two different FACS or DSDT tables are discovered in the
7972 FADT. Checks if there are two valid but different addresses for the FACS
7974 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7976 Consolidated the method argument count validation code. Merged the code
7978 validates control method argument counts into the predefined validation
7979 module. Eliminates possible multiple warnings for incorrect argument
7982 Implemented ACPICA example code. Includes code for ACPICA initialization,
7983 handler installation, and calling a control method. Available at
7984 source/tools/examples.
7986 Added a global pointer for FACS table to simplify internal FACS access.
7988 the global pointer instead of using AcpiGetTableByIndex for each FACS
7990 This simplifies the code for the Global Lock and the Firmware Waking
7993 Example Code and Data Size: These are the sizes for the OS-independent
7994 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7995 debug version of the code includes the debug output trace mechanism and
7997 much larger code and data size.
8000 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8001 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8003 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
8004 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
8006 2) iASL Compiler/Disassembler and Tools:
8008 iASL: Improved disassembly of external method calls. Added the -e option
8010 allow the inclusion of additional ACPI tables to help with the
8013 method invocations and the generation of external declarations during the
8014 disassembly. Certain external method invocations cannot be disassembled
8015 properly without the actual declaration of the method. Use the -e option
8017 include the table where the external method(s) are actually declared.
8019 useful for disassembling SSDTs that make method calls back to the master
8020 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
8022 -e dsdt.aml ssdt1.aml
8024 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
8025 problem where the use of an alias within a namepath would result in a not
8026 found error or cause the compiler to fault. Also now allows forward
8027 references from the Alias operator itself. ACPICA BZ 738.
8029 ----------------------------------------
8030 26 September 2008. Summary of changes for version 20080926:
8032 1) ACPI CA Core Subsystem:
8034 Designed and implemented a mechanism to validate predefined ACPI methods
8036 objects. This code validates the predefined ACPI objects (objects whose
8038 start with underscore) that appear in the namespace, at the time they are
8039 evaluated. The argument count and the type of the returned object are
8040 validated against the ACPI specification. The purpose of this validation
8042 to detect problems with the BIOS-implemented predefined ACPI objects
8044 the results are returned to the ACPI-related drivers. Future enhancements
8046 include actual repair of incorrect return objects where possible. Two new
8047 files are nspredef.c and acpredef.h.
8049 Fixed a fault in the AML parser if a memory allocation fails during the
8051 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
8053 Fixed an issue with implicit return compatibility. This change improves
8055 implicit return mechanism to be more compatible with the MS interpreter.
8057 Ming, ACPICA BZ 349.
8059 Implemented support for zero-length buffer-to-string conversions. Allow
8061 length strings during interpreter buffer-to-string conversions. For
8063 during the ToDecimalString and ToHexString operators, as well as implicit
8064 conversions. Fiodor Suietov, ACPICA BZ 585.
8066 Fixed two possible memory leaks in the error exit paths of
8067 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
8069 similar in that they use a stack of state objects in order to eliminate
8070 recursion. The stack must be fully unwound and deallocated if an error
8071 occurs. Lin Ming. ACPICA BZ 383.
8073 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
8075 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
8076 Moore ACPICA BZ 442.
8078 Removed the obsolete version number in module headers. Removed the
8079 "$Revision" number that appeared in each module header. This version
8081 was useful under SourceSafe and CVS, but has no meaning under git. It is
8083 only incorrect, it could also be misleading.
8085 Example Code and Data Size: These are the sizes for the OS-independent
8086 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8087 debug version of the code includes the debug output trace mechanism and
8089 much larger code and data size.
8092 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8093 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8095 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8096 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8098 ----------------------------------------
8099 29 August 2008. Summary of changes for version 20080829:
8101 1) ACPI CA Core Subsystem:
8103 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
8104 Reference. Changes include the elimination of cheating on the Object
8106 for the DdbHandle subtype, addition of a reference class field to
8107 differentiate the various reference types (instead of an AML opcode), and
8109 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
8111 Reduce an error to a warning for an incorrect method argument count.
8112 Previously aborted with an error if too few arguments were passed to a
8113 control method via the external ACPICA interface. Now issue a warning
8115 and continue. Handles the case where the method inadvertently declares
8117 many arguments, but does not actually use the extra ones. Applies mainly
8119 the predefined methods. Lin Ming. Linux BZ 11032.
8121 Disallow the evaluation of named object types with no intrinsic value.
8123 AE_TYPE for objects that have no value and therefore evaluation is
8125 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
8127 these types were allowed, but an exception would be generated at some
8129 during the evaluation. Now, the error is generated up front.
8131 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
8132 (nsnames.c). Fixes a leak in the error exit path.
8134 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
8136 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
8138 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
8141 Removed obsolete and/or unused exception codes from the acexcep.h header.
8142 There is the possibility that certain device drivers may be affected if
8144 use any of these exceptions.
8146 The ACPICA documentation has been added to the public git source tree,
8148 acpica/documents. Included are the ACPICA programmer reference, the iASL
8149 compiler reference, and the changes.txt release logfile.
8151 Example Code and Data Size: These are the sizes for the OS-independent
8152 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8153 debug version of the code includes the debug output trace mechanism and
8155 much larger code and data size.
8158 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8159 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8161 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8162 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8164 2) iASL Compiler/Disassembler and Tools:
8166 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
8167 defines _SCP with 3 arguments. Previous versions defined it with only 1
8168 argument. iASL now allows both definitions.
8170 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
8172 length subtables when disassembling ACPI tables. Also fixed a couple of
8173 errors where a full 16-bit table type field was not extracted from the
8177 acpisrc: Improve comment counting mechanism for generating source code
8178 statistics. Count first and last lines of multi-line comments as
8180 not comment lines. Handle Linux legal header in addition to standard
8184 ----------------------------------------
8186 29 July 2008. Summary of changes for version 20080729:
8188 1) ACPI CA Core Subsystem:
8190 Fix a possible deadlock in the GPE dispatch. Remove call to
8191 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
8193 to acquire the GPE lock but can deadlock since the GPE lock is already
8195 at dispatch time. This code was introduced in version 20060831 as a
8197 to Linux BZ 6881 and has since been removed from Linux.
8199 Add a function to dereference returned reference objects. Examines the
8201 object from a call to AcpiEvaluateObject. Any Index or RefOf references
8203 automatically dereferenced in an attempt to return something useful
8205 reference types cannot be converted into an external ACPI_OBJECT.)
8207 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
8209 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
8210 subtables for the MADT and one new subtable for the SRAT. Includes
8211 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
8213 Specification, June 2008.
8215 Additional error checking for pathname utilities. Add error check after
8217 calls to AcpiNsGetPathnameLength. Add status return from
8218 AcpiNsBuildExternalPath and check after all calls. Add parameter
8220 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
8222 Return status from the global init function AcpiUtGlobalInitialize. This
8224 used by both the kernel subsystem and the utilities such as iASL
8226 The function could possibly fail when the caches are initialized. Yang
8229 Add a function to decode reference object types to strings. Created for
8230 improved error messages.
8232 Improve object conversion error messages. Better error messages during
8234 conversion from internal to the external ACPI_OBJECT. Used for external
8236 to AcpiEvaluateObject.
8238 Example Code and Data Size: These are the sizes for the OS-independent
8239 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8240 debug version of the code includes the debug output trace mechanism and
8242 much larger code and data size.
8245 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8246 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8248 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8249 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8251 2) iASL Compiler/Disassembler and Tools:
8253 Debugger: fix a possible hang when evaluating non-methods. Fixes a
8255 introduced in version 20080701. If the object being evaluated (via
8257 command) is not a method, the debugger can hang while trying to obtain
8259 existent parameters.
8261 iASL: relax error for using reserved "_T_x" identifiers. These names can
8262 appear in a disassembled ASL file if they were emitted by the original
8263 compiler. Instead of issuing an error or warning and forcing the user to
8264 manually change these names, issue a remark instead.
8266 iASL: error if named object created in while loop. Emit an error if any
8268 object is created within a While loop. If allowed, this code will
8271 run-time error on the second iteration of the loop when an attempt is
8274 create the same named object twice. ACPICA bugzilla 730.
8276 iASL: Support absolute pathnames for include files. Add support for
8278 pathnames within the Include operator. previously, only relative
8282 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
8284 The ACPI spec requires one interrupt minimum. BZ 423
8286 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
8287 Handles the case for the Interrupt Resource Descriptor where
8288 the ResourceSource argument is omitted but ResourceSourceIndex
8289 is present. Now leave room for the Index. BZ 426
8291 iASL: Prevent error message if CondRefOf target does not exist. Fixes
8293 where an error message is emitted if the target does not exist. BZ 516
8295 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
8296 (get ACPI tables on Windows). This was apparently broken in version
8299 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
8301 the EOF happens immediately after the last table in the input file. Print
8302 completion message. Previously, no message was displayed in this case.
8304 ----------------------------------------
8305 01 July 2008. Summary of changes for version 20080701:
8307 0) Git source tree / acpica.org
8309 Fixed a problem where a git-clone from http would not transfer the entire
8312 1) ACPI CA Core Subsystem:
8314 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
8315 enable bit. Now performs a read-change-write of the enable register
8317 of simply writing out the cached enable mask. This will prevent
8319 enabling of GPEs if a rogue GPE is received during initialization (before
8321 handlers are installed.)
8323 Implemented a copy for dynamically loaded tables. Previously, dynamically
8324 loaded tables were simply mapped - but on some machines this memory is
8325 corrupted after suspend. Now copy the table to a local buffer. For the
8326 OpRegion case, added checksum verify. Use the table length from the table
8327 header, not the region length. For the Buffer case, use the table length
8328 also. Dennis Noordsij, Bob Moore. BZ 10734
8330 Fixed a problem where the same ACPI table could not be dynamically loaded
8332 unloaded more than once. Without this change, a table cannot be loaded
8334 once it has been loaded/unloaded one time. The current mechanism does not
8335 unregister a table upon an unload. During a load, if the same table is
8337 this no longer returns an exception. BZ 722
8339 Fixed a problem where the wrong descriptor length was calculated for the
8340 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
8342 are calculated as 12 bytes long, but the actual length in the internal
8343 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8345 by Linn Crosetto. BZ 728
8347 Fixed a possible memory leak in the Unload operator. The DdbHandle
8349 by Load() did not have its reference count decremented during unload,
8351 to a memory leak. Lin Ming. BZ 727
8353 Fixed a possible memory leak when deleting thermal/processor objects. Any
8354 associated notify handlers (and objects) were not being deleted. Fiodor
8357 Fixed the ordering of the ASCII names in the global mutex table to match
8359 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8361 Vegard Nossum. BZ 726
8363 Enhanced the AcpiGetObjectInfo interface to return the number of required
8364 arguments if the object is a control method. Added this call to the
8366 so the proper number of default arguments are passed to a method. This
8367 prevents a warning when executing methods from AcpiExec.
8369 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8370 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8372 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8374 Example Code and Data Size: These are the sizes for the OS-independent
8375 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8376 debug version of the code includes the debug output trace mechanism and
8378 much larger code and data size.
8381 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8382 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8384 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8385 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8387 2) iASL Compiler/Disassembler and Tools:
8389 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8390 resource descriptor names.
8392 iASL: Detect invalid ASCII characters in input (windows version). Removed
8394 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8395 characters in the input. BZ 441
8397 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8399 "result of operation not used" warning when the DDB handle returned from
8400 LoadTable is not used. The warning is not needed. BZ 590
8402 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8405 pass address of table to the AML. Added option to disable OpRegion
8407 to allow creation of an OpRegion with a real address that was passed to
8409 All of this allows testing of the Load and Unload operators from
8412 Debugger: update tables command for unloaded tables. Handle unloaded
8414 and use the standard table header output routine.
8416 ----------------------------------------
8417 09 June 2008. Summary of changes for version 20080609:
8419 1) ACPI CA Core Subsystem:
8421 Implemented a workaround for reversed _PRT entries. A significant number
8423 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8424 change dynamically detects and repairs this problem. Provides
8426 with MS ACPI. BZ 6859
8428 Simplified the internal ACPI hardware interfaces to eliminate the locking
8429 flag parameter from Register Read/Write. Added a new external interface,
8430 AcpiGetRegisterUnlocked.
8432 Fixed a problem where the invocation of a GPE control method could hang.
8434 was a regression introduced in 20080514. The new method argument count
8435 validation mechanism can enter an infinite loop when a GPE method is
8436 dispatched. Problem fixed by removing the obsolete code that passed GPE
8438 information to the notify handler via the control method parameter
8441 Fixed a problem where the _SST execution status was incorrectly returned
8443 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8445 20080514. _SST is optional and a NOT_FOUND exception should never be
8448 Fixed a problem where a deleted object could be accessed from within the
8450 parser. This was a regression introduced in version 20080123 as a fix for
8452 Unload operator. Lin Ming. BZ 10669
8454 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8456 and eliminated the use of a negative index in a loop. Operands are now
8457 displayed in the correct order, not backwards. This also fixes a
8459 introduced in 20080514 on 64-bit systems where the elimination of
8460 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8463 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8465 path did not delete a locally allocated structure.
8467 Updated definitions for the DMAR and SRAT tables to synchronize with the
8468 current specifications. Includes disassembler support.
8470 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8471 loop termination value was used. Loop terminated on iteration early,
8473 one mutex. Linn Crosetto
8475 Example Code and Data Size: These are the sizes for the OS-independent
8476 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8477 debug version of the code includes the debug output trace mechanism and
8479 much larger code and data size.
8482 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8483 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8485 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8486 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8488 2) iASL Compiler/Disassembler and Tools:
8490 Disassembler: Implemented support for EisaId() within _CID objects. Now
8491 disassemble integer _CID objects back to EisaId invocations, including
8492 multiple integers within _CID packages. Includes single-step support for
8495 Disassembler: Added support for DMAR and SRAT table definition changes.
8497 ----------------------------------------
8498 14 May 2008. Summary of changes for version 20080514:
8500 1) ACPI CA Core Subsystem:
8502 Fixed a problem where GPEs were enabled too early during the ACPICA
8503 initialization. This could lead to "handler not installed" errors on some
8504 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8506 ensures that all operation regions and devices throughout the namespace
8508 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8510 Implemented a change to the enter sleep code. Moved execution of the _GTS
8511 method to just before setting sleep enable bit. The execution was moved
8513 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8514 immediately before the SLP_EN bit is set, as per the ACPI specification.
8517 Implemented a fix to disable unknown GPEs (2nd version). Now always
8519 the GPE, even if ACPICA thinks that that it is already disabled. It is
8520 possible that the AML or some other code has enabled the GPE unbeknownst
8524 Fixed a problem with the Field operator where zero-length fields would
8526 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8528 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8530 Implemented a fix for the Load operator, now load the table at the
8532 root. This reverts a change introduced in version 20071019. The table is
8534 loaded at the namespace root even though this goes against the ACPI
8535 specification. This provides compatibility with other ACPI
8537 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8540 Fixed a problem where ACPICA would not Load() tables with unusual
8542 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8543 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8544 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8546 signatures, ACPICA must be compatible. BZ 10454.
8548 Fixed a possible negative array index in AcpiUtValidateException. Added
8550 fields to the exception string arrays to eliminate a -1 subtraction on
8554 Updated the debug tracking macros to reduce overall code and data size.
8555 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8556 instead of pointers to static strings. Jan Beulich and Bob Moore.
8558 Implemented argument count checking in control method invocation via
8559 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8561 many. This applies only to extern programmatic control method execution,
8563 method-to-method calls within the AML. Lin Ming.
8565 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8567 longer needed, especially with the removal of 16-bit support. It was
8569 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8572 32/64-bit platforms is required.
8574 Added the C const qualifier for appropriate string constants -- mostly
8575 MODULE_NAME and printf format strings. Jan Beulich.
8577 Example Code and Data Size: These are the sizes for the OS-independent
8578 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8579 debug version of the code includes the debug output trace mechanism and
8581 much larger code and data size.
8584 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8585 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8587 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8588 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8590 2) iASL Compiler/Disassembler and Tools:
8592 Implemented ACPI table revision ID validation in the disassembler. Zero
8594 always invalid. For DSDTs, the ID controls the interpreter integer width.
8596 means 32-bit and this is unusual. 2 or greater is 64-bit.
8598 ----------------------------------------
8599 21 March 2008. Summary of changes for version 20080321:
8601 1) ACPI CA Core Subsystem:
8603 Implemented an additional change to the GPE support in order to suppress
8604 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8606 disable incoming GPEs that are neither enabled nor disabled -- meaning
8608 the GPE is unknown to the system. This should prevent future interrupt
8610 from that GPE. BZ 6217 (Zhang Rui)
8612 Fixed a problem where NULL package elements were not returned to the
8613 AcpiEvaluateObject interface correctly. The element was simply ignored
8614 instead of returning a NULL ACPI_OBJECT package element, potentially
8616 a buffer overflow and/or confusing the caller who expected a fixed number
8618 elements. BZ 10132 (Lin Ming, Bob Moore)
8620 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8622 Qword), Field, BankField, and IndexField operators when invoked from
8624 an executing control method. In this case, these operators created
8626 nodes that were incorrectly left marked as permanent nodes instead of
8627 temporary nodes. This could cause a problem if there is race condition
8628 between an exiting control method and a running namespace walk. (Reported
8632 Fixed a problem where the CreateField and CreateXXXField operators would
8633 incorrectly allow duplicate names (the name of the field) with no
8637 Implemented several changes for Notify handling. Added support for new
8639 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8640 PowerResource objects is no longer allowed, as per the ACPI
8642 (Bob Moore, Zhang Rui)
8644 All Reference Objects returned via the AcpiEvaluateObject interface are
8646 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8648 NULL objects - either NULL package elements or unresolved named
8651 Fixed a problem where an extraneous debug message was produced for
8653 objects (when debugging enabled). The message "Package List length larger
8654 than NumElements count" is now produced in the correct case, and is now
8656 error message rather than a debug message. Added a debug message for the
8657 opposite case, where NumElements is larger than the Package List (the
8659 will be padded out with NULL elements as per the ACPI spec.)
8661 Implemented several improvements for the output of the ASL "Debug" object
8663 clarify and keep all data for a given object on one output line.
8665 Fixed two size calculation issues with the variable-length Start
8667 resource descriptor.
8669 Example Code and Data Size: These are the sizes for the OS-independent
8670 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8671 debug version of the code includes the debug output trace mechanism and
8673 a much larger code and data size.
8676 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8677 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8679 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8680 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8682 2) iASL Compiler/Disassembler and Tools:
8684 Fixed a problem with the use of the Switch operator where execution of
8686 containing method by multiple concurrent threads could cause an
8687 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8688 actual Switch opcode, it must be simulated with local named temporary
8689 variables and if/else pairs. The solution chosen was to mark any method
8691 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8694 ----------------------------------------
8695 13 February 2008. Summary of changes for version 20080213:
8697 1) ACPI CA Core Subsystem:
8699 Implemented another MS compatibility design change for GPE/Notify
8701 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8703 complete first. It is expected that the OSL will queue the enable request
8704 behind all pending notify requests (may require changes to the local host
8706 in AcpiOsExecute). Alexey Starikovskiy.
8708 Fixed a problem where buffer and package objects passed as arguments to a
8709 control method via the external AcpiEvaluateObject interface could cause
8711 AE_AML_INTERNAL exception depending on the order and type of operators
8712 executed by the target control method.
8714 Fixed a problem where resource descriptor size optimization could cause a
8715 problem when a _CRS resource template is passed to a _SRS method. The
8717 resource template must use the same descriptors (with the same size) as
8718 returned from _CRS. This change affects the following resource
8720 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8723 Fixed a problem where a CopyObject to RegionField, BankField, and
8725 objects did not perform an implicit conversion as it should. These types
8727 retain their initial type permanently as per the ACPI specification.
8729 a CopyObject to all other object types should not perform an implicit
8730 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8732 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8733 match device CIDs did not examine the entire list of available CIDs, but
8734 instead aborted on the first non-matching CID. Andrew Patterson.
8736 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8738 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8739 truncating the upper dword of a 64-bit value. This macro is only used to
8740 display debug output, so no incorrect calculations were made. Also,
8741 reimplemented the macro so that a 64-bit shift is not performed by
8742 inefficient compilers.
8744 Added missing va_end statements that should correspond with each va_start
8747 Example Code and Data Size: These are the sizes for the OS-independent
8748 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8749 debug version of the code includes the debug output trace mechanism and
8751 a much larger code and data size.
8754 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8755 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8757 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8758 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8760 2) iASL Compiler/Disassembler and Tools:
8762 Implemented full disassembler support for the following new ACPI tables:
8763 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8764 complicated HEST table. These tables support the Windows Hardware Error
8765 Architecture (WHEA).
8767 ----------------------------------------
8768 23 January 2008. Summary of changes for version 20080123:
8770 1) ACPI CA Core Subsystem:
8772 Added the 2008 copyright to all module headers and signons. This affects
8773 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8774 the tools/utilities.
8776 Fixed a problem with the SizeOf operator when used with Package and
8778 objects. These objects have deferred execution for some arguments, and
8780 execution is now completed before the SizeOf is executed. This problem
8782 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8786 Implemented an enhancement to the interpreter "slack mode". In the
8789 an explicit return or an implicitly returned object from the last
8791 opcode, a control method will now implicitly return an integer of value 0
8793 Microsoft compatibility. (Lin Ming) BZ 392
8795 Fixed a problem with the Load operator where an exception was not
8798 the case where the table is already loaded. (Lin Ming) BZ 463
8800 Implemented support for the use of DDBHandles as an Indexed Reference, as
8802 the ACPI spec. (Lin Ming) BZ 486
8804 Implemented support for UserTerm (Method invocation) for the Unload
8806 as per the ACPI spec. (Lin Ming) BZ 580
8808 Fixed a problem with the LoadTable operator where the OemId and
8810 input strings could cause unexpected failures if they were shorter than
8812 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8814 Implemented support for UserTerm (Method invocation) for the Unload
8816 as per the ACPI spec. (Lin Ming) BZ 580
8818 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8820 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8822 Example Code and Data Size: These are the sizes for the OS-independent
8823 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8824 debug version of the code includes the debug output trace mechanism and
8826 a much larger code and data size.
8829 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8830 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8832 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8833 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8835 2) iASL Compiler/Disassembler and Tools:
8837 Implemented support in the disassembler for checksum validation on
8839 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8841 header dump at the start of the disassembly.
8843 Implemented additional debugging information in the namespace listing
8845 created during compilation. In addition to the namespace hierarchy, the
8847 pathname to each namespace object is displayed.
8849 Fixed a problem with the disassembler where invalid ACPI tables could
8851 faults or infinite loops.
8853 Fixed an unexpected parse error when using the optional "parameter types"
8854 list in a control method declaration. (Lin Ming) BZ 397
8856 Fixed a problem where two External declarations with the same name did
8858 cause an error (Lin Ming) BZ 509
8860 Implemented support for full TermArgs (adding Argx, Localx and method
8861 invocation) for the ParameterData parameter to the LoadTable operator.
8865 ----------------------------------------
8866 19 December 2007. Summary of changes for version 20071219:
8868 1) ACPI CA Core Subsystem:
8870 Implemented full support for deferred execution for the TermArg string
8871 arguments for DataTableRegion. This enables forward references and full
8872 operand resolution for the three string arguments. Similar to
8874 deferred argument execution.) Lin Ming. BZ 430
8876 Implemented full argument resolution support for the BankValue argument
8878 BankField. Previously, only constants were supported, now any TermArg may
8880 used. Lin Ming BZ 387, 393
8882 Fixed a problem with AcpiGetDevices where the search of a branch of the
8883 device tree could be terminated prematurely. In accordance with the ACPI
8884 specification, the search down the current branch is terminated if a
8886 is both not present and not functional (instead of just not present.)
8890 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8892 the underlying AML code changed the GPE enable registers. Now, any
8894 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8896 instead of simply ignored. Rui Zhang.
8898 Fixed a problem with Index Fields where the Index register was
8900 limited to a maximum of 32 bits. Now any size may be used.
8902 Fixed a couple memory leaks associated with "implicit return" objects
8904 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8906 Example Code and Data Size: These are the sizes for the OS-independent
8907 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8908 debug version of the code includes the debug output trace mechanism and
8910 a much larger code and data size.
8913 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8914 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8916 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8917 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8919 ----------------------------------------
8920 14 November 2007. Summary of changes for version 20071114:
8922 1) ACPI CA Core Subsystem:
8924 Implemented event counters for each of the Fixed Events, the ACPI SCI
8925 (interrupt) itself, and control methods executed. Named
8926 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8928 should be useful for debugging and statistics.
8930 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8931 contents of the various event counters. Returns the current values for
8932 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8933 AcpiMethodCount. The interface can be expanded in the future if new
8935 are added. Device drivers should use this interface rather than access
8939 Fixed a problem with the FromBCD and ToBCD operators. With some
8941 the ShortDivide function worked incorrectly, causing problems with the
8943 functions with large input values. A truncation from 64-bit to 32-bit
8944 inadvertently occurred. Internal BZ 435. Lin Ming
8946 Fixed a problem with Index references passed as method arguments.
8948 passed as arguments to control methods were dereferenced immediately
8950 control was passed to the called method). The references are now
8952 passed directly to the called method. BZ 5389. Lin Ming
8954 Fixed a problem with CopyObject used in conjunction with the Index
8956 The reference was incorrectly dereferenced before the copy. The reference
8958 now correctly copied. BZ 5391. Lin Ming
8960 Fixed a problem with Control Method references within Package objects.
8962 references are now correctly generated. This completes the package
8963 construction overhaul that began in version 20071019.
8965 Example Code and Data Size: These are the sizes for the OS-independent
8966 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8967 debug version of the code includes the debug output trace mechanism and
8969 a much larger code and data size.
8972 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8973 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8975 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8976 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8979 2) iASL Compiler/Disassembler and Tools:
8981 The AcpiExec utility now installs handlers for all of the predefined
8982 Operation Region types. New types supported are: PCI_Config, CMOS, and
8985 Fixed a problem with the 64-bit version of AcpiExec where the extended
8987 bit) address fields for the DSDT and FACS within the FADT were not being
8988 used, causing truncation of the upper 32-bits of these addresses. Lin
8992 ----------------------------------------
8993 19 October 2007. Summary of changes for version 20071019:
8995 1) ACPI CA Core Subsystem:
8997 Fixed a problem with the Alias operator when the target of the alias is a
8998 named ASL operator that opens a new scope -- Scope, Device,
9000 Processor, and ThermalZone. In these cases, any children of the original
9001 operator could not be accessed via the alias, potentially causing
9003 AE_NOT_FOUND exceptions. (BZ 9067)
9005 Fixed a problem with the Package operator where all named references were
9006 created as object references and left otherwise unresolved. According to
9008 ACPI specification, a Package can only contain Data Objects or references
9010 control methods. The implication is that named references to Data Objects
9011 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
9012 immediately upon package creation. This is the approach taken with this
9013 change. References to all other named objects (Methods, Devices, Scopes,
9014 etc.) are all now properly created as reference objects. (BZ 5328)
9016 Reverted a change to Notify handling that was introduced in version
9017 20070508. This version changed the Notify handling from asynchronous to
9018 fully synchronous (Device driver Notify handling with respect to the
9020 ASL operator). It was found that this change caused more problems than it
9021 solved and was removed by most users.
9023 Fixed a problem with the Increment and Decrement operators where the type
9025 the target object could be unexpectedly and incorrectly changed. (BZ 353)
9028 Fixed a problem with the Load and LoadTable operators where the table
9029 location within the namespace was ignored. Instead, the table was always
9030 loaded into the root or current scope. Lin Ming.
9032 Fixed a problem with the Load operator when loading a table from a buffer
9033 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
9035 Fixed a problem with the Debug object where a store of a DdbHandle
9037 object to the Debug object could cause a fault.
9039 Added a table checksum verification for the Load operator, in the case
9041 the load is from a buffer. (BZ 578).
9043 Implemented additional parameter validation for the LoadTable operator.
9045 length of the input strings SignatureString, OemIdString, and OemTableId
9047 now checked for maximum lengths. (BZ 582) Lin Ming.
9049 Example Code and Data Size: These are the sizes for the OS-independent
9050 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9051 debug version of the code includes the debug output trace mechanism and
9053 a much larger code and data size.
9056 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9057 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9059 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9060 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9063 2) iASL Compiler/Disassembler:
9065 Fixed a problem where if a single file was specified and the file did not
9066 exist, no error message was emitted. (Introduced with wildcard support in
9069 ----------------------------------------
9070 19 September 2007. Summary of changes for version 20070919:
9072 1) ACPI CA Core Subsystem:
9074 Designed and implemented new external interfaces to install and remove
9075 handlers for ACPI table-related events. Current events that are defined
9077 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
9078 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
9079 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
9081 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
9082 (acpi_serialized option on Linux) could cause some systems to hang during
9083 initialization. (Bob Moore) BZ 8171
9085 Fixed a problem where objects of certain types (Device, ThermalZone,
9086 Processor, PowerResource) can be not found if they are declared and
9087 referenced from within the same control method (Lin Ming) BZ 341
9089 Example Code and Data Size: These are the sizes for the OS-independent
9090 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9091 debug version of the code includes the debug output trace mechanism and
9093 a much larger code and data size.
9096 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9097 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9099 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9100 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9103 2) iASL Compiler/Disassembler:
9105 Implemented support to allow multiple files to be compiled/disassembled
9108 single invocation. This includes command line wildcard support for both
9110 Windows and Unix versions of the compiler. This feature simplifies the
9111 disassembly and compilation of multiple ACPI tables in a single
9114 ----------------------------------------
9115 08 May 2007. Summary of changes for version 20070508:
9117 1) ACPI CA Core Subsystem:
9119 Implemented a Microsoft compatibility design change for the handling of
9121 Notify AML operator. Previously, notify handlers were dispatched and
9122 executed completely asynchronously in a deferred thread. The new design
9123 still executes the notify handlers in a different thread, but the
9125 thread that executed the Notify() now waits at a synchronization point
9127 the notify handler to complete. Some machines depend on a synchronous
9129 operator in order to operate correctly.
9131 Implemented support to allow Package objects to be passed as method
9132 arguments to the external AcpiEvaluateObject interface. Previously, this
9133 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
9134 implemented since there were no reserved control methods that required it
9137 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
9139 contained invalid non-zero values in reserved fields could cause later
9140 failures because these fields have meaning in later revisions of the
9142 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
9144 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
9146 Fixed a problem where the Global Lock handle was not properly updated if
9148 thread that acquired the Global Lock via executing AML code then
9150 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
9154 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
9155 could be corrupted if the interrupt being removed was at the head of the
9156 list. Reported by Linn Crosetto.
9158 Example Code and Data Size: These are the sizes for the OS-independent
9159 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9160 debug version of the code includes the debug output trace mechanism and
9162 a much larger code and data size.
9165 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9166 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9168 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9169 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9171 ----------------------------------------
9172 20 March 2007. Summary of changes for version 20070320:
9174 1) ACPI CA Core Subsystem:
9176 Implemented a change to the order of interpretation and evaluation of AML
9177 operand objects within the AML interpreter. The interpreter now evaluates
9178 operands in the order that they appear in the AML stream (and the
9179 corresponding ASL code), instead of in the reverse order (after the
9181 operand list has been parsed). The previous behavior caused several
9183 incompatibilities with the Microsoft AML interpreter as well as being
9184 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
9186 Implemented a change to the ACPI Global Lock support. All interfaces to
9188 global lock now allow the same thread to acquire the lock multiple times.
9189 This affects the AcpiAcquireGlobalLock external interface to the global
9191 as well as the internal use of the global lock to support AML fields -- a
9192 control method that is holding the global lock can now simultaneously
9194 AML fields that require global lock protection. Previously, in both
9196 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
9198 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
9199 Controller. There is no change to the behavior of the AML Acquire
9201 as this can already be used to acquire a mutex multiple times by the same
9202 thread. BZ 8066. With assistance from Alexey Starikovskiy.
9204 Fixed a problem where invalid objects could be referenced in the AML
9205 Interpreter after error conditions. During operand evaluation, ensure
9207 the internal "Return Object" field is cleared on error and only valid
9208 pointers are stored there. Caused occasional access to deleted objects
9210 resulted in "large reference count" warning messages. Valery Podrezov.
9212 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
9214 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
9217 Fixed an internal problem with the handling of result objects on the
9218 interpreter result stack. BZ 7872. Valery Podrezov.
9220 Removed obsolete code that handled the case where AML_NAME_OP is the
9222 of a reference (Reference.Opcode). This code was no longer necessary. BZ
9223 7874. Valery Podrezov.
9225 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
9228 remnant from the previously discontinued 16-bit support.
9230 Example Code and Data Size: These are the sizes for the OS-independent
9231 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9232 debug version of the code includes the debug output trace mechanism and
9234 a much larger code and data size.
9237 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9238 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9240 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9241 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9243 ----------------------------------------
9244 26 January 2007. Summary of changes for version 20070126:
9246 1) ACPI CA Core Subsystem:
9248 Added the 2007 copyright to all module headers and signons. This affects
9249 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9252 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
9253 during a table load. A bad pointer was passed in the case where the DSDT
9255 overridden, causing a fault in this case.
9257 Example Code and Data Size: These are the sizes for the OS-independent
9258 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9259 debug version of the code includes the debug output trace mechanism and
9261 a much larger code and data size.
9264 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9265 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9267 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9268 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9270 ----------------------------------------
9271 15 December 2006. Summary of changes for version 20061215:
9273 1) ACPI CA Core Subsystem:
9275 Support for 16-bit ACPICA has been completely removed since it is no
9277 necessary and it clutters the code. All 16-bit macros, types, and
9278 conditional compiles have been removed, cleaning up and simplifying the
9280 across the entire subsystem. DOS support is no longer needed since the
9281 bootable Linux firmware kit is now available.
9283 The handler for the Global Lock is now removed during AcpiTerminate to
9284 enable a clean subsystem restart, via the implementation of the
9285 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
9288 Implemented enhancements to the multithreading support within the
9290 to enable improved multithreading debugging and evaluation of the
9294 Debugger: Enhanced the Statistics/Memory command to emit the total
9296 memory used during the execution, as well as the maximum memory consumed
9298 each of the various object types. (Valery Podrezov)
9300 Example Code and Data Size: These are the sizes for the OS-independent
9301 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9302 debug version of the code includes the debug output trace mechanism and
9304 a much larger code and data size.
9307 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9308 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
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
9314 2) iASL Compiler/Disassembler and Tools:
9316 AcpiExec: Implemented a new option (-m) to display full memory use
9317 statistics upon subsystem/program termination. (Valery Podrezov)
9319 ----------------------------------------
9320 09 November 2006. Summary of changes for version 20061109:
9322 1) ACPI CA Core Subsystem:
9324 Optimized the Load ASL operator in the case where the source operand is
9326 operation region. Simply map the operation region memory, instead of
9327 performing a bytewise read. (Region must be of type SystemMemory, see
9330 Fixed the Load ASL operator for the case where the source operand is a
9331 region field. A buffer object is also allowed as the source operand. BZ
9334 Fixed a problem where the Load ASL operator allowed the source operand to
9336 an operation region of any type. It is now restricted to regions of type
9337 SystemMemory, as per the ACPI specification. BZ 481
9339 Additional cleanup and optimizations for the new Table Manager code.
9341 AcpiEnable will now fail if all of the required ACPI tables are not
9343 (FADT, FACS, DSDT). BZ 477
9345 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9347 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9348 manually optimized to be aligned and will not work if it is byte-packed.
9350 Example Code and Data Size: These are the sizes for the OS-independent
9351 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9352 debug version of the code includes the debug output trace mechanism and
9354 a much larger code and data size.
9357 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9358 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9360 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9361 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9364 2) iASL Compiler/Disassembler and Tools:
9366 Fixed a problem where the presence of the _OSI predefined control method
9367 within complex expressions could cause an internal compiler error.
9369 AcpiExec: Implemented full region support for multiple address spaces.
9370 SpaceId is now part of the REGION object. BZ 429
9372 ----------------------------------------
9373 11 October 2006. Summary of changes for version 20061011:
9375 1) ACPI CA Core Subsystem:
9377 Completed an AML interpreter performance enhancement for control method
9378 execution. Previously a 2-pass parse/execution, control methods are now
9379 completely parsed and executed in a single pass. This improves overall
9380 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9381 use. (Valery Podrezov + interpreter changes in version 20051202 that
9382 eliminated namespace loading during the pass one parse.)
9384 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9386 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9388 obtained and also checked for an ID match.
9390 Implemented additional support for the PCI _ADR execution: upsearch until
9392 device scope is found before executing _ADR. This allows PCI_Config
9393 operation regions to be declared locally within control methods
9397 Fixed a problem with a possible race condition between threads executing
9398 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9399 modifying AcpiWalkNamespace to (by default) ignore all temporary
9401 entries created during any concurrent control method execution. An
9402 additional namespace race condition is known to exist between
9403 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9406 Restructured the AML ParseLoop function, breaking it into several
9407 subfunctions in order to reduce CPU stack use and improve
9411 AcpiGetHandle: Fix for parameter validation to detect invalid
9413 of prefix handle and pathname. BZ 478
9415 Example Code and Data Size: These are the sizes for the OS-independent
9416 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9417 debug version of the code includes the debug output trace mechanism and
9419 a much larger code and data size.
9422 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9423 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9425 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9426 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9428 2) iASL Compiler/Disassembler and Tools:
9430 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9432 to restore original behavior.
9434 ----------------------------------------
9435 27 September 2006. Summary of changes for version 20060927:
9437 1) ACPI CA Core Subsystem:
9439 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9440 These functions now use a spinlock for mutual exclusion and the interrupt
9441 level indication flag is not needed.
9443 Fixed a problem with the Global Lock where the lock could appear to be
9444 obtained before it is actually obtained. The global lock semaphore was
9445 inadvertently created with one unit instead of zero units. (BZ 464)
9449 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9451 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9453 Example Code and Data Size: These are the sizes for the OS-independent
9454 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9455 debug version of the code includes the debug output trace mechanism and
9457 a much larger code and data size.
9460 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9461 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9463 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9464 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9467 2) iASL Compiler/Disassembler and Tools:
9469 Fixed a compilation problem with the pre-defined Resource Descriptor
9471 names where an "object does not exist" error could be incorrectly
9473 if the parent ResourceTemplate pathname places the template within a
9474 different namespace scope than the current scope. (BZ 7212)
9476 Fixed a problem where the compiler could hang after syntax errors
9478 in an ElseIf construct. (BZ 453)
9480 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9481 operator. An incorrect output filename was produced when this parameter
9483 a null string (""). Now, the original input filename is used as the AML
9484 output filename, with an ".aml" extension.
9486 Implemented a generic batch command mode for the AcpiExec utility
9488 any AML debugger command) (Valery Podrezov).
9490 ----------------------------------------
9491 12 September 2006. Summary of changes for version 20060912:
9493 1) ACPI CA Core Subsystem:
9495 Enhanced the implementation of the "serialized mode" of the interpreter
9496 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9497 specified, instead of creating a serialization semaphore per control
9499 the interpreter lock is simply no longer released before a blocking
9500 operation during control method execution. This effectively makes the AML
9501 Interpreter single-threaded. The overhead of a semaphore per-method is
9504 Fixed a regression where an error was no longer emitted if a control
9506 attempts to create 2 objects of the same name. This once again returns
9507 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9509 will dynamically serialize the control method to possible prevent future
9512 Integrated a fix for a problem with PCI Express HID detection in the PCI
9513 Config Space setup procedure. (BZ 7145)
9515 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9516 AcpiHwInitialize function - the FADT registers are now validated when the
9519 Added two new warnings during FADT verification - 1) if the FADT is
9521 than the largest known FADT version, and 2) if there is a mismatch
9524 32-bit block address and the 64-bit X counterpart (when both are non-
9527 Example Code and Data Size: These are the sizes for the OS-independent
9528 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9529 debug version of the code includes the debug output trace mechanism and
9531 a much larger code and data size.
9534 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9535 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9537 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9538 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9541 2) iASL Compiler/Disassembler and Tools:
9543 Fixed a problem with the implementation of the Switch() operator where
9545 temporary variable was declared too close to the actual Switch, instead
9547 at method level. This could cause a problem if the Switch() operator is
9548 within a while loop, causing an error on the second iteration. (BZ 460)
9550 Disassembler - fix for error emitted for unknown type for target of scope
9551 operator. Now, ignore it and continue.
9553 Disassembly of an FADT now verifies the input FADT and reports any errors
9554 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9556 Disassembly of raw data buffers with byte initialization data now
9558 each output line with the current buffer offset.
9560 Disassembly of ASF! table now includes all variable-length data fields at
9561 the end of some of the subtables.
9563 The disassembler now emits a comment if a buffer appears to be a
9564 ResourceTemplate, but cannot be disassembled as such because the EndTag
9566 not appear at the very end of the buffer.
9568 AcpiExec - Added the "-t" command line option to enable the serialized
9570 of the AML interpreter.
9572 ----------------------------------------
9573 31 August 2006. Summary of changes for version 20060831:
9575 1) ACPI CA Core Subsystem:
9577 Miscellaneous fixes for the Table Manager:
9578 - Correctly initialize internal common FADT for all 64-bit "X" fields
9579 - Fixed a couple table mapping issues during table load
9580 - Fixed a couple alignment issues for IA64
9581 - Initialize input array to zero in AcpiInitializeTables
9582 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9585 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9587 immediately disabled to prevent the waking GPE from firing again and to
9588 prevent other wake GPEs from interrupting the wake process.
9590 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9592 be used for debugging systems with a large number of ACPI interrupts.
9594 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9595 both the ACPICA headers and the disassembler.
9597 Example Code and Data Size: These are the sizes for the OS-independent
9598 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9599 debug version of the code includes the debug output trace mechanism and
9601 a much larger code and data size.
9604 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9605 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9607 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9608 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9611 2) iASL Compiler/Disassembler and Tools:
9613 Disassembler support for the DMAR ACPI table.
9615 ----------------------------------------
9616 23 August 2006. Summary of changes for version 20060823:
9618 1) ACPI CA Core Subsystem:
9620 The Table Manager component has been completely redesigned and
9621 reimplemented. The new design is much simpler, and reduces the overall
9623 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9625 now possible to obtain the ACPI tables very early during kernel
9626 initialization, even before dynamic memory management is initialized.
9627 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9629 Obsolete ACPICA interfaces:
9631 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9634 - AcpiLoadTable: Not needed.
9635 - AcpiUnloadTable: Not needed.
9637 New ACPICA interfaces:
9639 - AcpiInitializeTables: Must be called before the table manager can be
9641 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9642 allocated memory after it becomes available.
9643 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9647 Other ACPICA changes:
9649 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9651 AcpiOsUnmapMemory to free this mapping.
9652 - AcpiGetTable returns the actual mapped table. The mapping is managed
9653 internally and must not be deleted by the caller. Use of this interface
9654 causes no additional dynamic memory allocation.
9655 - AcpiFindRootPointer: Support for physical addressing has been
9657 it appeared to be unused.
9658 - The interface to AcpiOsMapMemory has changed to be consistent with the
9659 other allocation interfaces.
9660 - The interface to AcpiOsGetRootPointer has changed to eliminate
9663 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9665 bit platforms. Was previously 64 bits on all platforms.
9666 - The interface to the ACPI Global Lock acquire/release macros have
9668 slightly since ACPICA no longer keeps a local copy of the FACS with a
9669 constructed pointer to the actual global lock.
9671 Porting to the new table manager:
9673 - AcpiInitializeTables: Must be called once, and can be called anytime
9674 during the OS initialization process. It allows the host to specify an
9676 of memory to be used to store the internal version of the RSDT/XSDT (root
9677 table). This allows the host to access ACPI tables before memory
9679 is initialized and running.
9680 - AcpiReallocateRootTable: Can be called after memory management is
9682 to copy the root table to a dynamically allocated array, freeing up the
9683 scratch memory specified in the call to AcpiInitializeTables.
9684 - AcpiSubsystemInitialize: This existing interface is independent of the
9685 Table Manager, and does not have to be called before the Table Manager
9687 be used, it only must be called before the rest of ACPICA can be used.
9688 - ACPI Tables: Some changes have been made to the names and structure of
9690 actbl.h and actbl1.h header files and may require changes to existing
9692 For example, bitfields have been completely removed because of their lack
9694 portability across C compilers.
9695 - Update interfaces to the Global Lock acquire/release macros if local
9696 versions are used. (see acwin.h)
9698 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9702 Example Code and Data Size: These are the sizes for the OS-independent
9703 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9704 debug version of the code includes the debug output trace mechanism and
9706 a much larger code and data size.
9709 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9710 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9712 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9713 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9716 2) iASL Compiler/Disassembler and Tools:
9718 No changes for this release.
9720 ----------------------------------------
9721 21 July 2006. Summary of changes for version 20060721:
9723 1) ACPI CA Core Subsystem:
9725 The full source code for the ASL test suite used to validate the iASL
9726 compiler and the ACPICA core subsystem is being released with the ACPICA
9727 source for the first time. The source is contained in a separate package
9729 consists of over 1100 files that exercise all ASL/AML operators. The
9731 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9735 Completed a new design and implementation for support of the ACPI Global
9736 Lock. On the OS side, the global lock is now treated as a standard AML
9737 mutex. Previously, multiple OS threads could "acquire" the global lock
9738 simultaneously. However, this could cause the BIOS to be starved out of
9740 lock - especially in cases such as the Embedded Controller driver where
9741 there is a tight coupling between the OS and the BIOS.
9743 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9744 The Global Lock interrupt handler no longer queues the execution of a
9745 separate thread to signal the global lock semaphore. Instead, the
9747 is signaled directly from the interrupt handler.
9749 Implemented support within the AML interpreter for package objects that
9750 contain a larger AML length (package list length) than the package
9752 count. In this case, the length of the package is truncated to match the
9753 package element count. Some BIOS code apparently modifies the package
9755 on the fly, and this change supports this behavior. Provides
9757 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9759 Implemented a temporary fix for the BankValue parameter of a Bank Field
9761 support all constant values, now including the Zero and One opcodes.
9762 Evaluation of this parameter must eventually be converted to a full
9764 evaluation. A not-implemented error is now returned (temporarily) for
9766 constant values for this parameter.
9768 Fixed problem reports (Fiodor Suietov) integrated:
9769 - Fix for premature object deletion after CopyObject on Operation Region
9773 Example Code and Data Size: These are the sizes for the OS-independent
9774 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9775 debug version of the code includes the debug output trace mechanism and
9777 a much larger code and data size.
9780 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9781 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9783 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9784 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9787 2) iASL Compiler/Disassembler and Tools:
9789 No changes for this release.
9791 ----------------------------------------
9792 07 July 2006. Summary of changes for version 20060707:
9794 1) ACPI CA Core Subsystem:
9796 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9797 that do not allow the initialization of address pointers within packed
9798 structures - even though the hardware itself may support misaligned
9799 transfers. Some of the debug data structures are packed by default to
9802 Added an error message for the case where AcpiOsGetThreadId() returns
9804 A non-zero value is required by the core ACPICA code to ensure the proper
9805 operation of AML mutexes and recursive control methods.
9807 The DSDT is now the only ACPI table that determines whether the AML
9808 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9810 the hooks for per-table 32/64 switching have been removed from the code.
9812 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9814 Fixed a possible leak of an OwnerID in the error path of
9815 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9816 deletion to a single place in AcpiTbUninstallTable to correct possible
9818 when using the AcpiTbDeleteTablesByType interface (with assistance from
9821 Fixed a problem with Serialized control methods where the semaphore
9822 associated with the method could be over-signaled after multiple method
9825 Fixed two issues with the locking of the internal namespace data
9827 Both the Unload() operator and AcpiUnloadTable interface now lock the
9828 namespace during the namespace deletion associated with the table unload
9829 (with assistance from Linn Crosetto.)
9831 Fixed problem reports (Valery Podrezov) integrated:
9832 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9834 Fixed problem reports (Fiodor Suietov) integrated:
9835 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9836 - On Address Space handler deletion, needless deactivation call (BZ 374)
9837 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9839 - Possible memory leak, Notify sub-objects of Processor, Power,
9842 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9843 - Minimum Length of RSDT should be validated (BZ 379)
9844 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9846 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9850 Example Code and Data Size: These are the sizes for the OS-independent
9851 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9852 debug version of the code includes the debug output trace mechanism and
9854 a much larger code and data size.
9857 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9858 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9860 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9861 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9864 2) iASL Compiler/Disassembler and Tools:
9866 Fixed problem reports:
9867 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9870 ----------------------------------------
9871 23 June 2006. Summary of changes for version 20060623:
9873 1) ACPI CA Core Subsystem:
9875 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9876 allows the type to be customized to the host OS for improved efficiency
9877 (since a spinlock is usually a very small object.)
9879 Implemented support for "ignored" bits in the ACPI registers. According
9881 the ACPI specification, these bits should be preserved when writing the
9882 registers via a read/modify/write cycle. There are 3 bits preserved in
9884 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9886 Implemented the initial deployment of new OSL mutex interfaces. Since
9888 host operating systems have separate mutex and semaphore objects, this
9889 feature was requested. The base code now uses mutexes (and the new mutex
9890 interfaces) wherever a binary semaphore was used previously. However, for
9891 the current release, the mutex interfaces are defined as macros to map
9893 to the existing semaphore interfaces. Therefore, no OSL changes are
9895 at this time. (See acpiosxf.h)
9897 Fixed several problems with the support for the control method SyncLevel
9898 parameter. The SyncLevel now works according to the ACPI specification
9900 in concert with the Mutex SyncLevel parameter, since the current
9902 is a property of the executing thread. Mutual exclusion for control
9904 is now implemented with a mutex instead of a semaphore.
9906 Fixed three instances of the use of the C shift operator in the bitfield
9907 support code (exfldio.c) to avoid the use of a shift value larger than
9909 target data width. The behavior of C compilers is undefined in this case
9911 can cause unpredictable results, and therefore the case must be detected
9913 avoided. (Fiodor Suietov)
9915 Added an info message whenever an SSDT or OEM table is loaded dynamically
9916 via the Load() or LoadTable() ASL operators. This should improve
9918 capability since it will show exactly what tables have been loaded
9920 the tables present in the RSDT/XSDT.)
9922 Example Code and Data Size: These are the sizes for the OS-independent
9923 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9924 debug version of the code includes the debug output trace mechanism and
9926 a much larger code and data size.
9929 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9930 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9932 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9933 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9936 2) iASL Compiler/Disassembler and Tools:
9938 No changes for this release.
9940 ----------------------------------------
9941 08 June 2006. Summary of changes for version 20060608:
9943 1) ACPI CA Core Subsystem:
9945 Converted the locking mutex used for the ACPI hardware to a spinlock.
9947 change should eliminate all problems caused by attempting to acquire a
9948 semaphore at interrupt level, and it means that all ACPICA external
9949 interfaces that directly access the ACPI hardware can be safely called
9951 interrupt level. OSL code that implements the semaphore interfaces should
9953 able to eliminate any workarounds for being called at interrupt level.
9955 Fixed a regression introduced in 20060526 where the ACPI device
9956 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9958 did not have an optional _INI method.
9960 Fixed an IndexField issue where a write to the Data Register should be
9961 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9965 Fixed problem reports (Valery Podrezov) integrated:
9966 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9968 Fixed problem reports (Fiodor Suietov) integrated:
9969 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9971 Removed four global mutexes that were obsolete and were no longer being
9974 Example Code and Data Size: These are the sizes for the OS-independent
9975 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9976 debug version of the code includes the debug output trace mechanism and
9978 a much larger code and data size.
9981 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9982 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9984 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9985 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9988 2) iASL Compiler/Disassembler and Tools:
9990 Fixed a fault when using -g option (get tables from registry) on Windows
9993 Fixed problem reports integrated:
9994 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9995 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9997 - Global table revision override (-r) is ignored (BZ 413)
9999 ----------------------------------------
10000 26 May 2006. Summary of changes for version 20060526:
10002 1) ACPI CA Core Subsystem:
10004 Restructured, flattened, and simplified the internal interfaces for
10005 namespace object evaluation - resulting in smaller code, less CPU stack
10007 and fewer interfaces. (With assistance from Mikhail Kouzmich)
10009 Fixed a problem with the CopyObject operator where the first parameter
10011 not typed correctly for the parser, interpreter, compiler, and
10013 Caused various errors and unexpected behavior.
10015 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
10016 produced incorrect results with some C compilers. Since the behavior of C
10017 compilers when the shift value is larger than the datatype width is
10018 apparently not well defined, the interpreter now detects this condition
10020 simply returns zero as expected in all such cases. (BZ 395)
10022 Fixed problem reports (Valery Podrezov) integrated:
10023 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
10024 - Allow interpreter to handle nested method declarations (BZ 5361)
10026 Fixed problem reports (Fiodor Suietov) integrated:
10027 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
10029 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
10031 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
10032 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
10033 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
10034 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
10035 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
10036 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
10037 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
10039 - Status of the Global Initialization Handler call not used (BZ 366)
10040 - Incorrect object parameter to Global Initialization Handler (BZ 367)
10042 Example Code and Data Size: These are the sizes for the OS-independent
10043 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10044 debug version of the code includes the debug output trace mechanism and
10046 a much larger code and data size.
10049 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10050 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10052 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10053 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10056 2) iASL Compiler/Disassembler and Tools:
10058 Modified the parser to allow the names IO, DMA, and IRQ to be used as
10059 namespace identifiers with no collision with existing resource descriptor
10060 macro names. This provides compatibility with other ASL compilers and is
10061 most useful for disassembly/recompilation of existing tables without
10063 errors. (With assistance from Thomas Renninger)
10065 Disassembler: fixed an incorrect disassembly problem with the
10066 DataTableRegion and CopyObject operators. Fixed a possible fault during
10067 disassembly of some Alias operators.
10069 ----------------------------------------
10070 12 May 2006. Summary of changes for version 20060512:
10072 1) ACPI CA Core Subsystem:
10074 Replaced the AcpiOsQueueForExecution interface with a new interface named
10075 AcpiOsExecute. The major difference is that the new interface does not
10077 a Priority parameter, this appeared to be useless and has been replaced
10080 Type parameter. The Type tells the host what type of execution is being
10081 requested, such as global lock handler, notify handler, GPE handler, etc.
10082 This allows the host to queue and execute the request as appropriate for
10084 request type, possibly using different work queues and different
10086 for the various request types. This enables fixes for multithreading
10087 deadlock problems such as BZ #5534, and will require changes to all
10089 OS interface layers. (Alexey Starikovskiy and Bob Moore)
10091 Fixed a possible memory leak associated with the support for the so-
10093 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
10096 Fixed a problem with the Load() operator where a table load from an
10097 operation region could overwrite an internal table buffer by up to 7
10099 and cause alignment faults on IPF systems. (With assistance from Luming
10102 Example Code and Data Size: These are the sizes for the OS-independent
10103 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10104 debug version of the code includes the debug output trace mechanism and
10106 a much larger code and data size.
10109 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10110 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10112 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10113 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10117 2) iASL Compiler/Disassembler and Tools:
10119 Disassembler: Implemented support to cross reference the internal
10121 and automatically generate ASL External() statements for symbols not
10123 within the current table being disassembled. This will simplify the
10124 disassembly and recompilation of interdependent tables such as SSDTs
10126 these statements will no longer have to be added manually.
10128 Disassembler: Implemented experimental support to automatically detect
10129 invocations of external control methods and generate appropriate
10131 statements. This is problematic because the AML cannot be correctly
10133 until the number of arguments for each control method is known.
10135 standalone method invocations and invocations as the source operand of a
10136 Store() statement are supported.
10138 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
10139 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
10140 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
10141 more readable and likely closer to the original ASL source.
10143 ----------------------------------------
10144 21 April 2006. Summary of changes for version 20060421:
10146 1) ACPI CA Core Subsystem:
10148 Removed a device initialization optimization introduced in 20051216 where
10149 the _STA method was not run unless an _INI was also present for the same
10150 device. This optimization could cause problems because it could allow
10152 methods to be run within a not-present device subtree. (If a not-present
10153 device had no _INI, _STA would not be run, the not-present status would
10155 be discovered, and the children of the device would be incorrectly
10158 Implemented a new _STA optimization where namespace subtrees that do not
10159 contain _INI are identified and ignored during device initialization.
10160 Selectively running _STA can significantly improve boot time on large
10161 machines (with assistance from Len Brown.)
10163 Implemented support for the device initialization case where the returned
10164 _STA flags indicate a device not-present but functioning. In this case,
10166 is not run, but the device children are examined for presence, as per the
10167 ACPI specification.
10169 Implemented an additional change to the IndexField support in order to
10170 conform to MS behavior. The value written to the Index Register is not
10171 simply a byte offset, it is a byte offset in units of the access width of
10172 the parent Index Field. (Fiodor Suietov)
10174 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
10175 interface is called during the creation of all AML operation regions, and
10176 allows the host OS to exert control over what addresses it will allow the
10177 AML code to access. Operation Regions whose addresses are disallowed will
10178 cause a runtime exception when they are actually accessed (will not
10180 or abort table loading.) See oswinxf or osunixxf for an example
10183 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
10184 interface allows the host OS to match the various "optional"
10185 interface/behavior strings for the _OSI predefined control method as
10186 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
10187 for an example implementation.
10189 Restructured and corrected various problems in the exception handling
10191 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
10192 (with assistance from Takayoshi Kochi.)
10194 Modified the Linux source converter to ignore quoted string literals
10196 converting identifiers from mixed to lower case. This will correct
10198 with the disassembler and other areas where such strings must not be
10201 The ACPI_FUNCTION_* macros no longer require quotes around the function
10202 name. This allows the Linux source converter to convert the names, now
10204 the converter ignores quoted strings.
10206 Example Code and Data Size: These are the sizes for the OS-independent
10207 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10208 debug version of the code includes the debug output trace mechanism and
10210 a much larger code and data size.
10214 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10215 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10217 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10218 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10221 2) iASL Compiler/Disassembler and Tools:
10223 Implemented 3 new warnings for iASL, and implemented multiple warning
10227 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
10229 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
10230 check for the possible timeout, a warning is issued.
10232 2) Useless operators: If an ASL operator does not specify an optional
10234 operand and it also does not use the function return value from the
10235 operator, a warning is issued since the operator effectively does
10238 3) Unreferenced objects: If a namespace object is created, but never
10239 referenced, a warning is issued. This is a warning level 2 since there
10241 cases where this is ok, such as when a secondary table is loaded that
10243 the unreferenced objects. Even so, care is taken to only flag objects
10245 don't look like they will ever be used. For example, the reserved methods
10246 (starting with an underscore) are usually not referenced because it is
10247 expected that the OS will invoke them.
10249 ----------------------------------------
10250 31 March 2006. Summary of changes for version 20060331:
10252 1) ACPI CA Core Subsystem:
10254 Implemented header file support for the following additional ACPI tables:
10255 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
10257 all current and known ACPI tables are now defined in the ACPICA headers
10259 are available for use by device drivers and other software.
10261 Implemented support to allow tables that contain ACPI names with invalid
10262 characters to be loaded. Previously, this would cause the table load to
10263 fail, but since there are several known cases of such tables on existing
10264 machines, this change was made to enable ACPI support for them. Also,
10266 matches the behavior of the Microsoft ACPI implementation.
10268 Fixed a couple regressions introduced during the memory optimization in
10270 20060317 release. The namespace node definition required additional
10271 reorganization and an internal datatype that had been changed to 8-bit
10273 restored to 32-bit. (Valery Podrezov)
10275 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
10276 could be passed through to AcpiOsReleaseObject which is unexpected. Such
10277 null pointers are now trapped and ignored, matching the behavior of the
10278 previous implementation before the deployment of AcpiOsReleaseObject.
10279 (Valery Podrezov, Fiodor Suietov)
10281 Fixed a memory mapping leak during the deletion of a SystemMemory
10283 region where a cached memory mapping was not deleted. This became a
10284 noticeable problem for operation regions that are defined within
10286 used control methods. (Dana Meyers)
10288 Reorganized the ACPI table header files into two main files: one for the
10289 ACPI tables consumed by the ACPICA core, and another for the
10291 ACPI tables that are consumed by the drivers and other software. The
10293 FADT definitions were merged into one common section and three different
10294 tables (ACPI 1.0, 1.0+, and 2.0)
10296 Example Code and Data Size: These are the sizes for the OS-independent
10297 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10298 debug version of the code includes the debug output trace mechanism and
10300 a much larger code and data size.
10303 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10304 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10306 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10307 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10310 2) iASL Compiler/Disassembler and Tools:
10312 Disassembler: Implemented support to decode and format all non-AML ACPI
10313 tables (tables other than DSDTs and SSDTs.) This includes the new tables
10314 added to the ACPICA headers, therefore all current and known ACPI tables
10318 Disassembler: The change to allow ACPI names with invalid characters also
10319 enables the disassembly of such tables. Invalid characters within names
10321 changed to '*' to make the name printable; the iASL compiler will still
10322 generate an error for such names, however, since this is an invalid ACPI
10325 Implemented an option for AcpiXtract (-a) to extract all tables found in
10327 input file. The default invocation extracts only the DSDTs and SSDTs.
10329 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
10330 makefile for the AcpiXtract utility.
10332 ----------------------------------------
10333 17 March 2006. Summary of changes for version 20060317:
10335 1) ACPI CA Core Subsystem:
10337 Implemented the use of a cache object for all internal namespace nodes.
10338 Since there are about 1000 static nodes in a typical system, this will
10339 decrease memory use for cache implementations that minimize per-
10341 overhead (such as a slab allocator.)
10343 Removed the reference count mechanism for internal namespace nodes, since
10345 was deemed unnecessary. This reduces the size of each namespace node by
10346 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10348 and 32 bytes for the 64-bit case.
10350 Optimized several internal data structures to reduce object size on 64-
10352 platforms by packing data within the 64-bit alignment. This includes the
10353 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10354 instances corresponding to the namespace objects.
10356 Added two new strings for the predefined _OSI method: "Windows 2001.1
10358 and "Windows 2006".
10360 Split the allocation tracking mechanism out to a separate file, from
10361 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10362 application-level code. Kernels may wish to not include uttrack.c in
10365 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10367 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10370 Code and Data Size: These are the sizes for the acpica.lib produced by
10372 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10374 driver or OSPM code. The debug version of the code includes the debug
10376 trace mechanism and has a much larger code and data size. Note that these
10377 values will vary depending on the efficiency of the compiler and the
10378 compiler options used during generation.
10381 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10382 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10384 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10385 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10388 2) iASL Compiler/Disassembler and Tools:
10390 Implemented an ANSI C version of the acpixtract utility. This version
10392 automatically extract the DSDT and all SSDTs from the input acpidump text
10393 file and dump the binary output to separate files. It can also display a
10394 summary of the input file including the headers for each table found and
10395 will extract any single ACPI table, with any signature. (See
10396 source/tools/acpixtract)
10398 ----------------------------------------
10399 10 March 2006. Summary of changes for version 20060310:
10401 1) ACPI CA Core Subsystem:
10403 Tagged all external interfaces to the subsystem with the new
10404 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10406 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10407 macro. The default definition is NULL.
10409 Added the ACPI_THREAD_ID type for the return value from
10411 This allows the host to define this as necessary to simplify kernel
10412 integration. The default definition is ACPI_NATIVE_UINT.
10414 Fixed two interpreter problems related to error processing, the deletion
10416 objects, and placing invalid pointers onto the internal operator result
10417 stack. BZ 6028, 6151 (Valery Podrezov)
10419 Increased the reference count threshold where a warning is emitted for
10421 reference counts in order to eliminate unnecessary warnings on systems
10423 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10426 Due to universal disagreement as to the meaning of the 'c' in the
10428 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10429 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10430 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10433 Code and Data Size: These are the sizes for the acpica.lib produced by
10435 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10437 driver or OSPM code. The debug version of the code includes the debug
10439 trace mechanism and has a much larger code and data size. Note that these
10440 values will vary depending on the efficiency of the compiler and the
10441 compiler options used during generation.
10444 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10445 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10447 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10448 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10451 2) iASL Compiler/Disassembler:
10453 Disassembler: implemented support for symbolic resource descriptor
10454 references. If a CreateXxxxField operator references a fixed offset
10457 resource descriptor, a name is assigned to the descriptor and the offset
10459 translated to the appropriate resource tag and pathname. The addition of
10460 this support brings the disassembled code very close to the original ASL
10461 source code and helps eliminate run-time errors when the disassembled
10463 is modified (and recompiled) in such a way as to invalidate the original
10466 Implemented support for a Descriptor Name as the last parameter to the
10468 Register() macro. This parameter was inadvertently left out of the ACPI
10469 specification, and will be added for ACPI 3.0b.
10471 Fixed a problem where the use of the "_OSI" string (versus the full path
10472 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10474 Fixed a problem with the error message that occurs when an invalid string
10476 used for a _HID object (such as one with an embedded asterisk:
10478 The correct message is now displayed.
10480 ----------------------------------------
10481 17 February 2006. Summary of changes for version 20060217:
10483 1) ACPI CA Core Subsystem:
10485 Implemented a change to the IndexField support to match the behavior of
10487 Microsoft AML interpreter. The value written to the Index register is now
10489 byte offset, no longer an index based upon the width of the Data
10491 This should fix IndexField problems seen on some machines where the Data
10492 register is not exactly one byte wide. The ACPI specification will be
10493 clarified on this point.
10495 Fixed a problem where several resource descriptor types could overrun the
10496 internal descriptor buffer due to size miscalculation: VendorShort,
10497 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10498 affect all platforms.
10500 Fixed a problem where individual resource descriptors were misaligned
10502 the internal buffer, causing alignment faults on IA64 platforms.
10504 Code and Data Size: These are the sizes for the acpica.lib produced by
10506 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10508 driver or OSPM code. The debug version of the code includes the debug
10510 trace mechanism and has a much larger code and data size. Note that these
10511 values will vary depending on the efficiency of the compiler and the
10512 compiler options used during generation.
10515 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10516 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10518 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10519 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10522 2) iASL Compiler/Disassembler:
10524 Implemented support for new reserved names: _WDG and _WED are Microsoft
10525 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10526 defined method (Throttling Depth Limit.)
10528 Fixed a problem where a zero-length VendorShort or VendorLong resource
10529 descriptor was incorrectly emitted as a descriptor of length one.
10531 ----------------------------------------
10532 10 February 2006. Summary of changes for version 20060210:
10534 1) ACPI CA Core Subsystem:
10536 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10537 normal execution. These became apparent after the conversion from
10540 Fixed a problem where the CreateField operator could hang if the BitIndex
10542 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10544 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10545 failed with an exception. This also fixes a couple of related RefOf and
10546 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10548 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10550 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10554 Implemented a memory cleanup at the end of the execution of each
10556 of an AML While() loop, preventing the accumulation of outstanding
10558 (Valery Podrezov, BZ 5427)
10560 Eliminated a chunk of duplicate code in the object resolution code.
10564 Fixed several warnings during the 64-bit code generation.
10566 The AcpiSrc source code conversion tool now inserts one line of
10568 after an if() statement that is followed immediately by a comment,
10570 readability of the Linux code.
10572 Code and Data Size: The current and previous library sizes for the core
10573 subsystem are shown below. These are the code and data sizes for the
10574 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10576 values do not include any ACPI driver or OSPM code. The debug version of
10578 code includes the debug output trace mechanism and has a much larger code
10579 and data size. Note that these values will vary depending on the
10581 of the compiler and the compiler options used during generation.
10584 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10585 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10587 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10588 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10591 2) iASL Compiler/Disassembler:
10593 Fixed a problem with the disassembly of a BankField operator with a
10595 expression for the BankValue parameter.
10597 ----------------------------------------
10598 27 January 2006. Summary of changes for version 20060127:
10600 1) ACPI CA Core Subsystem:
10602 Implemented support in the Resource Manager to allow unresolved
10604 references within resource package objects for the _PRT method. This
10606 is in addition to the previously implemented unresolved reference support
10607 within the AML parser. If the interpreter slack mode is enabled, these
10608 unresolved references will be passed through to the caller as a NULL
10612 Implemented and deployed new macros and functions for error and warning
10613 messages across the subsystem. These macros are simpler and generate less
10614 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10615 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10616 macros remain defined to allow ACPI drivers time to migrate to the new
10619 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10621 Acquire/Release Lock OSL interfaces.
10623 Fixed a problem where Alias ASL operators are sometimes not correctly
10624 resolved, in both the interpreter and the iASL compiler.
10626 Fixed several problems with the implementation of the
10627 ConcatenateResTemplate
10628 ASL operator. As per the ACPI specification, zero length buffers are now
10629 treated as a single EndTag. One-length buffers always cause a fatal
10630 exception. Non-zero length buffers that do not end with a full 2-byte
10632 cause a fatal exception.
10634 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10635 interface. (With assistance from Thomas Renninger)
10637 Code and Data Size: The current and previous library sizes for the core
10638 subsystem are shown below. These are the code and data sizes for the
10639 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10641 values do not include any ACPI driver or OSPM code. The debug version of
10643 code includes the debug output trace mechanism and has a much larger code
10644 and data size. Note that these values will vary depending on the
10646 of the compiler and the compiler options used during generation.
10649 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10650 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10652 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10653 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10656 2) iASL Compiler/Disassembler:
10658 Fixed an internal error that was generated for any forward references to
10662 ----------------------------------------
10663 13 January 2006. Summary of changes for version 20060113:
10665 1) ACPI CA Core Subsystem:
10667 Added 2006 copyright to all module headers and signons. This affects
10668 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10671 Enhanced the ACPICA error reporting in order to simplify user migration
10673 the non-debug version of ACPICA. Replaced all instances of the
10674 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10676 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10677 respectively. This preserves all error and warning messages in the non-
10679 version of the ACPICA code (this has been referred to as the "debug lite"
10680 option.) Over 200 cases were converted to create a total of over 380
10681 error/warning messages across the ACPICA code. This increases the code
10683 data size of the default non-debug version of the code somewhat (about
10685 but all error/warning reporting may be disabled if desired (and code
10686 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10687 configuration option. The size of the debug version of ACPICA remains
10691 Fixed a memory leak within the AML Debugger "Set" command. One object was
10692 not properly deleted for every successful invocation of the command.
10694 Code and Data Size: The current and previous library sizes for the core
10695 subsystem are shown below. These are the code and data sizes for the
10696 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10698 values do not include any ACPI driver or OSPM code. The debug version of
10700 code includes the debug output trace mechanism and has a much larger code
10701 and data size. Note that these values will vary depending on the
10703 of the compiler and the compiler options used during generation.
10706 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10707 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10709 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10710 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10713 2) iASL Compiler/Disassembler:
10715 The compiler now officially supports the ACPI 3.0a specification that was
10716 released on December 30, 2005. (Specification is available at
10719 ----------------------------------------
10720 16 December 2005. Summary of changes for version 20051216:
10722 1) ACPI CA Core Subsystem:
10724 Implemented optional support to allow unresolved names within ASL Package
10725 objects. A null object is inserted in the package when a named reference
10726 cannot be located in the current namespace. Enabled via the interpreter
10727 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10729 that contain such code.
10731 Implemented an optimization to the initialization sequence that can
10733 boot time. During ACPI device initialization, the _STA method is now run
10735 and only if the _INI method exists. The _STA method is used to determine
10737 the device is present; An _INI can only be run if _STA returns present,
10739 it is a waste of time to run the _STA method if the _INI does not exist.
10740 (Prototype and assistance from Dong Wei)
10742 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10744 available in the current compiler. Otherwise, the default (void *) cast
10748 Fixed some possible memory leaks found within the execution path of the
10749 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10751 Fixed a problem introduced in the 20051202 release where an exception is
10752 generated during method execution if a control method attempts to declare
10755 Moved resource descriptor string constants that are used by both the AML
10756 disassembler and AML debugger to the common utilities directory so that
10757 these components are independent.
10759 Implemented support in the AcpiExec utility (-e switch) to globally
10761 exceptions during control method execution (method is not aborted.)
10763 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10766 Code and Data Size: The current and previous library sizes for the core
10767 subsystem are shown below. These are the code and data sizes for the
10768 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10770 values do not include any ACPI driver or OSPM code. The debug version of
10772 code includes the debug output trace mechanism and has a much larger code
10773 and data size. Note that these values will vary depending on the
10775 of the compiler and the compiler options used during generation.
10778 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10779 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10781 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10782 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10785 2) iASL Compiler/Disassembler:
10787 Fixed a problem where a CPU stack overflow fault could occur if a
10789 method call was made from within a Return statement.
10791 ----------------------------------------
10792 02 December 2005. Summary of changes for version 20051202:
10794 1) ACPI CA Core Subsystem:
10796 Modified the parsing of control methods to no longer create namespace
10797 objects during the first pass of the parse. Objects are now created only
10798 during the execute phase, at the moment the namespace creation operator
10800 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10802 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10803 reentrant control methods are protected by an AML mutex. The mutex will
10805 correctly block multiple threads from attempting to create the same
10809 Increased the number of available Owner Ids for namespace object tracking
10810 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10812 some machines with a large number of ACPI tables (either static or
10815 Fixed a problem with the AcpiExec utility where a fault could occur when
10817 -b switch (batch mode) is used.
10819 Enhanced the namespace dump routine to output the owner ID for each
10822 Code and Data Size: The current and previous library sizes for the core
10823 subsystem are shown below. These are the code and data sizes for the
10824 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10826 values do not include any ACPI driver or OSPM code. The debug version of
10828 code includes the debug output trace mechanism and has a much larger code
10829 and data size. Note that these values will vary depending on the
10831 of the compiler and the compiler options used during generation.
10834 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10835 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10837 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10838 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10841 2) iASL Compiler/Disassembler:
10843 Fixed a parse error during compilation of certain Switch/Case constructs.
10845 simplify the parse, the grammar now allows for multiple Default
10847 and this error is now detected and flagged during the analysis phase.
10849 Disassembler: The disassembly now includes the contents of the original
10850 table header within a comment at the start of the file. This includes the
10851 name and version of the original ASL compiler.
10853 ----------------------------------------
10854 17 November 2005. Summary of changes for version 20051117:
10856 1) ACPI CA Core Subsystem:
10858 Fixed a problem in the AML parser where the method thread count could be
10859 decremented below zero if any errors occurred during the method parse
10861 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10863 This also fixed a related regression with the mechanism that detects and
10864 corrects methods that cannot properly handle reentrancy (related to the
10865 deployment of the new OwnerId mechanism.)
10867 Eliminated the pre-parsing of control methods (to detect errors) during
10868 table load. Related to the problem above, this was causing unwind issues
10870 any errors occurred during the parse, and it seemed to be overkill. A
10872 load should not be aborted if there are problems with any single control
10873 method, thus rendering this feature rather pointless.
10875 Fixed a problem with the new table-driven resource manager where an
10877 buffer overflow could occur for small resource templates.
10879 Implemented a new external interface, AcpiGetVendorResource. This
10881 will find and return a vendor-defined resource descriptor within a _CRS
10883 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10886 Removed the length limit (200) on string objects as per the upcoming ACPI
10887 3.0A specification. This affects the following areas of the interpreter:
10889 any implicit conversion of a Buffer to a String, 2) a String object
10891 of the ASL Concatentate operator, 3) the String object result of the ASL
10894 Fixed a problem in the Windows OS interface layer (OSL) where a
10896 on a semaphore object would incorrectly timeout. This allows the
10897 multithreading features of the AcpiExec utility to work properly under
10900 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10901 the recently added file named "utresrc.c".
10903 Code and Data Size: The current and previous library sizes for the core
10904 subsystem are shown below. These are the code and data sizes for the
10905 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10907 values do not include any ACPI driver or OSPM code. The debug version of
10909 code includes the debug output trace mechanism and has a much larger code
10910 and data size. Note that these values will vary depending on the
10912 of the compiler and the compiler options used during generation.
10915 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10916 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10918 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10919 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10922 2) iASL Compiler/Disassembler:
10924 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10925 specification. For the iASL compiler, this means that string literals
10927 the source ASL can be of any length.
10929 Enhanced the listing output to dump the AML code for resource descriptors
10930 immediately after the ASL code for each descriptor, instead of in a block
10932 the end of the entire resource template.
10934 Enhanced the compiler debug output to dump the entire original parse tree
10935 constructed during the parse phase, before any transforms are applied to
10937 tree. The transformed tree is dumped also.
10939 ----------------------------------------
10940 02 November 2005. Summary of changes for version 20051102:
10942 1) ACPI CA Core Subsystem:
10944 Modified the subsystem initialization sequence to improve GPE support.
10946 GPE initialization has been split into two parts in order to defer
10948 of the _PRW methods (Power Resources for Wake) until after the hardware
10950 fully initialized and the SCI handler is installed. This allows the _PRW
10951 methods to access fields protected by the Global Lock. This will fix
10953 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10955 Converted the ACPI internal object disassemble and display code within
10957 AML debugger to fully table-driven operation, reducing code size and
10958 increasing maintainability.
10960 Fixed a regression with the ConcatenateResTemplate() ASL operator
10962 in the 20051021 release.
10964 Implemented support for "local" internal ACPI object types within the
10965 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10966 These local types include RegionFields, BankFields, IndexFields, Alias,
10970 Moved common AML resource handling code into a new file, "utresrc.c".
10972 code is shared by both the Resource Manager and the AML Debugger.
10974 Code and Data Size: The current and previous library sizes for the core
10975 subsystem are shown below. These are the code and data sizes for the
10976 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10978 values do not include any ACPI driver or OSPM code. The debug version of
10980 code includes the debug output trace mechanism and has a much larger code
10981 and data size. Note that these values will vary depending on the
10983 of the compiler and the compiler options used during generation.
10986 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10987 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10989 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10990 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10993 2) iASL Compiler/Disassembler:
10995 Fixed a problem with very large initializer lists (more than 4000
10997 for both Buffer and Package objects where the parse stack could overflow.
10999 Enhanced the pre-compile source code scan for non-ASCII characters to
11001 characters within comment fields. The scan is now always performed and is
11003 longer optional, detecting invalid characters within a source file
11004 immediately rather than during the parse phase or later.
11006 Enhanced the ASL grammar definition to force early reductions on all
11008 style grammar elements so that the overall parse stack usage is greatly
11009 reduced. This should improve performance and reduce the possibility of
11013 Eliminated all reduce/reduce conflicts in the iASL parser generation.
11015 with the addition of a %expected statement, the compiler generates from
11016 source with no warnings.
11018 Fixed a possible segment fault in the disassembler if the input filename
11019 does not contain a "dot" extension (Thomas Renninger).
11021 ----------------------------------------
11022 21 October 2005. Summary of changes for version 20051021:
11024 1) ACPI CA Core Subsystem:
11026 Implemented support for the EM64T and other x86-64 processors. This
11027 essentially entails recognizing that these processors support non-aligned
11028 memory transfers. Previously, all 64-bit processors were assumed to lack
11029 hardware support for non-aligned transfers.
11031 Completed conversion of the Resource Manager to nearly full table-driven
11032 operation. Specifically, the resource conversion code (convert AML to
11033 internal format and the reverse) and the debug code to dump internal
11034 resource descriptors are fully table-driven, reducing code and data size
11036 improving maintainability.
11038 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
11040 on 64-bit processors instead of a fixed 32-bit word. (With assistance
11042 Alexey Starikovskiy)
11044 Implemented support within the resource conversion code for the Type-
11045 Specific byte within the various ACPI 3.0 *WordSpace macros.
11047 Fixed some issues within the resource conversion code for the type-
11049 flags for both Memory and I/O address resource descriptors. For Memory,
11050 implemented support for the MTP and TTP flags. For I/O, split the TRS and
11051 TTP flags into two separate fields.
11053 Code and Data Size: The current and previous library sizes for the core
11054 subsystem are shown below. These are the code and data sizes for the
11055 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11057 values do not include any ACPI driver or OSPM code. The debug version of
11059 code includes the debug output trace mechanism and has a much larger code
11060 and data size. Note that these values will vary depending on the
11062 of the compiler and the compiler options used during generation.
11065 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11066 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11068 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11069 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11073 2) iASL Compiler/Disassembler:
11075 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
11077 corresponding ResourceSource string was not also present in a resource
11078 descriptor declaration. This restriction caused problems with existing
11079 AML/ASL code that includes the Index byte without the string. When such
11081 was disassembled, it could not be compiled without modification. Further,
11082 the modified code created a resource template with a different size than
11084 original, breaking code that used fixed offsets into the resource
11088 Removed a recent feature of the disassembler to ignore a lone
11090 byte. This byte is now emitted if present so that the exact AML can be
11091 reproduced when the disassembled code is recompiled.
11093 Improved comments and text alignment for the resource descriptor code
11094 emitted by the disassembler.
11096 Implemented disassembler support for the ACPI 3.0 AccessSize field within
11098 Register() resource descriptor.
11100 ----------------------------------------
11101 30 September 2005. Summary of changes for version 20050930:
11103 1) ACPI CA Core Subsystem:
11105 Completed a major overhaul of the Resource Manager code - specifically,
11106 optimizations in the area of the AML/internal resource conversion code.
11108 code has been optimized to simplify and eliminate duplicated code, CPU
11110 use has been decreased by optimizing function parameters and local
11111 variables, and naming conventions across the manager have been
11113 for clarity and ease of maintenance (this includes function, parameter,
11114 variable, and struct/typedef names.) The update may force changes in some
11115 driver code, depending on how resources are handled by the host OS.
11117 All Resource Manager dispatch and information tables have been moved to a
11118 single location for clarity and ease of maintenance. One new file was
11119 created, named "rsinfo.c".
11121 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
11122 guarantee that the argument is not evaluated twice, making them less
11124 to macro side-effects. However, since there exists the possibility of
11125 additional stack use if a particular compiler cannot optimize them (such
11127 in the debug generation case), the original macros are optionally
11129 Note that some invocations of the return_VALUE macro may now cause size
11130 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
11132 eliminate these. (From Randy Dunlap)
11134 Implemented a new mechanism to enable debug tracing for individual
11136 methods. A new external interface, AcpiDebugTrace, is provided to enable
11137 this mechanism. The intent is to allow the host OS to easily enable and
11138 disable tracing for problematic control methods. This interface can be
11139 easily exposed to a user or debugger interface if desired. See the file
11140 psxface.c for details.
11142 AcpiUtCallocate will now return a valid pointer if a length of zero is
11143 specified - a length of one is used and a warning is issued. This matches
11144 the behavior of AcpiUtAllocate.
11146 Code and Data Size: The current and previous library sizes for the core
11147 subsystem are shown below. These are the code and data sizes for the
11148 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11150 values do not include any ACPI driver or OSPM code. The debug version of
11152 code includes the debug output trace mechanism and has a much larger code
11153 and data size. Note that these values will vary depending on the
11155 of the compiler and the compiler options used during generation.
11158 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11159 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11161 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11162 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11165 2) iASL Compiler/Disassembler:
11167 A remark is issued if the effective compile-time length of a package or
11168 buffer is zero. Previously, this was a warning.
11170 ----------------------------------------
11171 16 September 2005. Summary of changes for version 20050916:
11173 1) ACPI CA Core Subsystem:
11175 Fixed a problem within the Resource Manager where support for the Generic
11176 Register descriptor was not fully implemented. This descriptor is now
11178 recognized, parsed, disassembled, and displayed.
11180 Completely restructured the Resource Manager code to utilize table-driven
11181 dispatch and lookup, eliminating many of the large switch() statements.
11183 reduces overall subsystem code size and code complexity. Affects the
11184 resource parsing and construction, disassembly, and debug dump output.
11186 Cleaned up and restructured the debug dump output for all resource
11187 descriptors. Improved readability of the output and reduced code size.
11189 Fixed a problem where changes to internal data structures caused the
11190 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
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: 78.4K Code, 11.8K Data, 90.2K Total
11205 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11207 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11208 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11211 2) iASL Compiler/Disassembler:
11213 Updated the disassembler to automatically insert an EndDependentFn()
11215 into the ASL stream if this macro is missing in the original AML code,
11216 simplifying compilation of the resulting ASL module.
11218 Fixed a problem in the disassembler where a disassembled ResourceSource
11219 string (within a large resource descriptor) was not surrounded by quotes
11221 not followed by a comma, causing errors when the resulting ASL module was
11222 compiled. Also, escape sequences within a ResourceSource string are now
11223 handled correctly (especially "\\")
11225 ----------------------------------------
11226 02 September 2005. Summary of changes for version 20050902:
11228 1) ACPI CA Core Subsystem:
11230 Fixed a problem with the internal Owner ID allocation and deallocation
11231 mechanisms for control method execution and recursive method invocation.
11232 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
11233 messages seen on some systems. Recursive method invocation depth is
11234 currently limited to 255. (Alexey Starikovskiy)
11236 Completely eliminated all vestiges of support for the "module-level
11237 executable code" until this support is fully implemented and debugged.
11239 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
11240 some systems that invoke this support.
11242 Fixed a problem within the resource manager code where the transaction
11244 for a 64-bit address descriptor were handled incorrectly in the type-
11245 specific flag byte.
11247 Consolidated duplicate code within the address descriptor resource
11249 code, reducing overall subsystem code size.
11251 Fixed a fault when using the AML debugger "disassemble" command to
11252 disassemble individual control methods.
11254 Removed references to the "release_current" directory within the Unix
11257 Code and Data Size: The current and previous core subsystem library sizes
11258 are shown below. These are the code and data sizes for the acpica.lib
11259 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
11260 include any ACPI driver or OSPM code. The debug version of the code
11262 the debug output trace mechanism and has a much larger code and data
11264 Note that these values will vary depending on the efficiency of the
11266 and the compiler options used during generation.
11269 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11270 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11272 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11273 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11276 2) iASL Compiler/Disassembler:
11278 Implemented an error check for illegal duplicate values in the interrupt
11280 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
11283 Implemented error checking for the Irq() and IrqNoFlags() macros to
11285 too many values in the interrupt list (16 max) and invalid values in the
11286 list (range 0 - 15)
11288 The maximum length string literal within an ASL file is now restricted to
11289 200 characters as per the ACPI specification.
11291 Fixed a fault when using the -ln option (generate namespace listing).
11293 Implemented an error check to determine if a DescriptorName within a
11294 resource descriptor has already been used within the current scope.
11296 ----------------------------------------
11297 15 August 2005. Summary of changes for version 20050815:
11299 1) ACPI CA Core Subsystem:
11301 Implemented a full bytewise compare to determine if a table load request
11303 attempting to load a duplicate table. The compare is performed if the
11305 signatures and table lengths match. This will allow different tables with
11306 the same OEM Table ID and revision to be loaded - probably against the
11308 specification, but discovered in the field nonetheless.
11310 Added the changes.txt logfile to each of the zipped release packages.
11312 Code and Data Size: Current and previous core subsystem library sizes are
11313 shown below. These are the code and data sizes for the acpica.lib
11315 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11316 any ACPI driver or OSPM code. The debug version of the code includes the
11317 debug output trace mechanism and has a much larger code and data size.
11319 that these values will vary depending on the efficiency of the compiler
11321 the compiler options used during generation.
11324 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11325 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11327 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11328 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11331 2) iASL Compiler/Disassembler:
11333 Fixed a problem where incorrect AML code could be generated for Package
11334 objects if optimization is disabled (via the -oa switch).
11336 Fixed a problem with where incorrect AML code is generated for variable-
11337 length packages when the package length is not specified and the number
11339 initializer values is greater than 255.
11342 ----------------------------------------
11343 29 July 2005. Summary of changes for version 20050729:
11345 1) ACPI CA Core Subsystem:
11347 Implemented support to ignore an attempt to install/load a particular
11349 table more than once. Apparently there exists BIOS code that repeatedly
11350 attempts to load the same SSDT upon certain events. With assistance from
11351 Venkatesh Pallipadi.
11353 Restructured the main interface to the AML parser in order to correctly
11354 handle all exceptional conditions. This will prevent leakage of the
11356 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11358 machines. With assistance from Alexey Starikovskiy.
11360 Support for "module level code" has been disabled in this version due to
11362 number of issues that have appeared on various machines. The support can
11364 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11365 compilation. When the issues are fully resolved, the code will be enabled
11369 Modified the internal functions for debug print support to define the
11370 FunctionName parameter as a (const char *) for compatibility with
11372 built-in macros such as __FUNCTION__, etc.
11374 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11376 Implemented support to display an object count summary for the AML
11378 commands Object and Methods.
11380 Code and Data Size: Current and previous core subsystem library sizes are
11381 shown below. These are the code and data sizes for the acpica.lib
11383 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11384 any ACPI driver or OSPM code. The debug version of the code includes the
11385 debug output trace mechanism and has a much larger code and data size.
11387 that these values will vary depending on the efficiency of the compiler
11389 the compiler options used during generation.
11392 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11393 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11395 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11396 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11399 2) iASL Compiler/Disassembler:
11401 Fixed a regression that appeared in the 20050708 version of the compiler
11402 where an error message was inadvertently emitted for invocations of the
11404 reserved control method.
11406 ----------------------------------------
11407 08 July 2005. Summary of changes for version 20050708:
11409 1) ACPI CA Core Subsystem:
11411 The use of the CPU stack in the debug version of the subsystem has been
11412 considerably reduced. Previously, a debug structure was declared in every
11413 function that used the debug macros. This structure has been removed in
11414 favor of declaring the individual elements as parameters to the debug
11415 functions. This reduces the cumulative stack use during nested execution
11417 ACPI function calls at the cost of a small increase in the code size of
11419 debug version of the subsystem. With assistance from Alexey Starikovskiy
11423 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11424 headers to define a macro that will return the current function name at
11425 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11427 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11428 compiler-dependent header, the function name is saved on the CPU stack
11430 pointer per function.) This mechanism is used because apparently there
11431 exists no standard ANSI-C defined macro that that returns the function
11434 Redesigned and reimplemented the "Owner ID" mechanism used to track
11435 namespace objects created/deleted by ACPI tables and control method
11436 execution. A bitmap is now used to allocate and free the IDs, thus
11438 the wraparound problem present in the previous implementation. The size
11440 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11443 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11445 flag definitions within the headers for the predefined ACPI tables. These
11446 have been replaced by UINT8_BIT in order to increase the code portability
11448 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11449 eliminate bitfields entirely because of a lack of portability.
11451 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11453 is a frequently used function and this improvement increases the
11455 of the entire subsystem (Alexey Starikovskiy).
11457 Fixed several possible memory leaks and the inverse - premature object
11458 deletion (Alexey Starikovskiy).
11460 Code and Data Size: Current and previous core subsystem library sizes are
11461 shown below. These are the code and data sizes for the acpica.lib
11463 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11464 any ACPI driver or OSPM code. The debug version of the code includes the
11465 debug output trace mechanism and has a much larger code and data size.
11467 that these values will vary depending on the efficiency of the compiler
11469 the compiler options used during generation.
11472 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11473 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11475 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11476 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11478 ----------------------------------------
11479 24 June 2005. Summary of changes for version 20050624:
11481 1) ACPI CA Core Subsystem:
11483 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11484 the host-defined cache object. This allows the OSL implementation to
11486 and type this object in any manner desired, simplifying the OSL
11487 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11488 Linux, and should be defined in the OS-specific header file for other
11489 operating systems as required.
11491 Changed the interface to AcpiOsAcquireObject to directly return the
11492 requested object as the function return (instead of ACPI_STATUS.) This
11493 change was made for performance reasons, since this is the purpose of the
11494 interface in the first place. AcpiOsAcquireObject is now similar to the
11495 AcpiOsAllocate interface.
11497 Implemented a new AML debugger command named Businfo. This command
11499 information about all devices that have an associate _PRT object. The
11501 _HID, _UID, and _CID are displayed for these devices.
11503 Modified the initialization sequence in AcpiInitializeSubsystem to call
11505 OSL interface AcpiOslInitialize first, before any local initialization.
11507 change was required because the global initialization now calls OSL
11510 Enhanced the Dump command to display the entire contents of Package
11512 (including all sub-objects and their values.)
11514 Restructured the code base to split some files because of size and/or
11515 because the code logically belonged in a separate file. New files are
11517 below. All makefiles and project files included in the ACPI CA release
11520 utilities/utcache.c /* Local cache interfaces */
11521 utilities/utmutex.c /* Local mutex support */
11522 utilities/utstate.c /* State object support */
11523 interpreter/parser/psloop.c /* Main AML parse loop */
11525 Code and Data Size: Current and previous core subsystem library sizes are
11526 shown below. These are the code and data sizes for the acpica.lib
11528 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11529 any ACPI driver or OSPM code. The debug version of the code includes the
11530 debug output trace mechanism and has a much larger code and data size.
11532 that these values will vary depending on the efficiency of the compiler
11534 the compiler options used during generation.
11537 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11538 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11540 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11541 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11544 2) iASL Compiler/Disassembler:
11546 Fixed a regression introduced in version 20050513 where the use of a
11548 object within a Case() statement caused a compile time exception. The
11549 original behavior has been restored (a Match() operator is emitted.)
11551 ----------------------------------------
11552 17 June 2005. Summary of changes for version 20050617:
11554 1) ACPI CA Core Subsystem:
11556 Moved the object cache operations into the OS interface layer (OSL) to
11558 the host OS to handle these operations if desired (for example, the Linux
11559 OSL will invoke the slab allocator). This support is optional; the
11561 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11563 code in the ACPI CA core. The new OSL interfaces are shown below. See
11564 utalloc.c for an example implementation, and acpiosxf.h for the exact
11565 interface definitions. With assistance from Alexey Starikovskiy.
11569 AcpiOsAcquireObject
11570 AcpiOsReleaseObject
11572 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11574 and restore a flags parameter. This fits better with many OS lock models.
11575 Note: the current execution state (interrupt handler or not) is no longer
11576 passed to these interfaces. If necessary, the OSL must determine this
11578 by itself, a simple and fast operation. With assistance from Alexey
11581 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11582 present if the revision of the RSDP was 2 or greater. According to the
11584 specification, the XSDT is optional in all cases, and the table manager
11585 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11586 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11590 Fixed an interpreter problem with the Mid() operator in the case of an
11592 string where the resulting output string is of zero length. It now
11594 returns a valid, null terminated string object instead of a string object
11595 with a null pointer.
11597 Fixed a problem with the control method argument handling to allow a
11599 to an Arg object that already contains an object of type Device. The
11601 object is now correctly overwritten. Previously, an error was returned.
11604 Enhanced the debugger Find command to emit object values in addition to
11606 found object pathnames. The output format is the same as the dump
11610 Enhanced the debugger Set command. It now has the ability to set the
11612 of any Named integer object in the namespace (Previously, only method
11614 and args could be set.)
11616 Code and Data Size: Current and previous core subsystem library sizes are
11617 shown below. These are the code and data sizes for the acpica.lib
11619 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11620 any ACPI driver or OSPM code. The debug version of the code includes the
11621 debug output trace mechanism and has a much larger code and data size.
11623 that these values will vary depending on the efficiency of the compiler
11625 the compiler options used during generation.
11628 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11629 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11631 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11632 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11635 2) iASL Compiler/Disassembler:
11637 Fixed a regression in the disassembler where if/else/while constructs
11639 output incorrectly. This problem was introduced in the previous release
11640 (20050526). This problem also affected the single-step disassembly in the
11643 Fixed a problem where compiling the reserved _OSI method would randomly
11645 rarely) produce compile errors.
11647 Enhanced the disassembler to emit compilable code in the face of
11649 AML resource descriptors. If the optional ResourceSourceIndex is present,
11650 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11651 disassembly. Otherwise, the resulting code cannot be compiled without
11654 ----------------------------------------
11655 26 May 2005. Summary of changes for version 20050526:
11657 1) ACPI CA Core Subsystem:
11659 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11660 the module level (not within a control method.) These opcodes are
11662 exactly once at the time the table is loaded. This type of code was legal
11664 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11666 order to provide backwards compatibility with earlier BIOS
11668 This eliminates the "Encountered executable code at module level" warning
11669 that was previously generated upon detection of such code.
11671 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11672 inadvertently be generated during the lookup of namespace objects in the
11673 second pass parse of ACPI tables and control methods. It appears that
11675 problem could occur during the resolution of forward references to
11679 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11680 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11681 allows the deadlock detection debug code to be compiled out in the normal
11682 case, improving mutex performance (and overall subsystem performance)
11685 Implemented a handful of miscellaneous fixes for possible memory leaks on
11686 error conditions and error handling control paths. These fixes were
11687 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11689 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11691 to prevent a fault in this error case.
11693 Code and Data Size: Current and previous core subsystem library sizes are
11694 shown below. These are the code and data sizes for the acpica.lib
11696 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11697 any ACPI driver or OSPM code. The debug version of the code includes the
11698 debug output trace mechanism and has a much larger code and data size.
11700 that these values will vary depending on the efficiency of the compiler
11702 the compiler options used during generation.
11705 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11706 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11708 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11709 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11712 2) iASL Compiler/Disassembler:
11714 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11715 the module level (not within a control method.) These operators will be
11716 executed once at the time the table is loaded. This type of code was
11718 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11719 compiler in order to provide backwards compatibility with earlier BIOS
11723 The ACPI integer width (specified via the table revision ID or the -r
11724 override, 32 or 64 bits) is now used internally during compile-time
11726 folding to ensure that constants are truncated to 32 bits if necessary.
11727 Previously, the revision ID value was only emitted in the AML table
11730 An error message is now generated for the Mutex and Method operators if
11732 SyncLevel parameter is outside the legal range of 0 through 15.
11734 Fixed a problem with the Method operator ParameterTypes list handling
11736 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11738 The actual underlying implementation of method argument typechecking is
11739 still under development, however.
11741 ----------------------------------------
11742 13 May 2005. Summary of changes for version 20050513:
11744 1) ACPI CA Core Subsystem:
11746 Implemented support for PCI Express root bridges -- added support for
11748 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11750 The interpreter now automatically truncates incoming 64-bit constants to
11752 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11754 also affects the iASL compiler constant folding. (Note: as per below, the
11755 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11757 Fixed a problem where string and buffer objects with "static" pointers
11758 (pointers to initialization data within an ACPI table) were not handled
11759 consistently. The internal object copy operation now always copies the
11761 to a newly allocated buffer, regardless of whether the source object is
11764 Fixed a problem with the FromBCD operator where an implicit result
11765 conversion was improperly performed while storing the result to the
11767 operand. Since this is an "explicit conversion" operator, the implicit
11768 conversion should never be performed on the output.
11770 Fixed a problem with the CopyObject operator where a copy to an existing
11771 named object did not always completely overwrite the existing object
11773 at name. Specifically, a buffer-to-buffer copy did not delete the
11777 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11779 structs for consistency.
11781 Code and Data Size: Current and previous core subsystem library sizes are
11782 shown below. These are the code and data sizes for the acpica.lib
11784 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11785 any ACPI driver or OSPM code. The debug version of the code includes the
11786 debug output trace mechanism and has a much larger code and data size.
11788 that these values will vary depending on the efficiency of the compiler
11790 the compiler options used during generation.
11793 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11794 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11795 Current Release: (Same sizes)
11796 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11797 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11800 2) iASL Compiler/Disassembler:
11802 The compiler now emits a warning if an attempt is made to generate a 64-
11804 integer constant from within a 32-bit ACPI table (Revision < 2). The
11806 is truncated to 32 bits.
11808 Fixed a problem with large package objects: if the static length of the
11809 package is greater than 255, the "variable length package" opcode is
11810 emitted. Previously, this caused an error. This requires an update to the
11811 ACPI spec, since it currently (incorrectly) states that packages larger
11813 255 elements are not allowed.
11815 The disassembler now correctly handles variable length packages and
11817 larger than 255 elements.
11819 ----------------------------------------
11820 08 April 2005. Summary of changes for version 20050408:
11822 1) ACPI CA Core Subsystem:
11824 Fixed three cases in the interpreter where an "index" argument to an ASL
11825 function was still (internally) 32 bits instead of the required 64 bits.
11826 This was the Index argument to the Index, Mid, and Match operators.
11828 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11830 not a POSIX-defined function and not present in most kernel-level C
11831 libraries. All references to the C library strupr function have been
11835 Completed the deployment of static functions/prototypes. All prototypes
11837 the static attribute have been moved from the headers to the owning C
11840 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11841 utility). This option allows the utility to extract individual ACPI
11843 from the output of AcpiDmp. It provides the same functionality of the
11844 acpixtract.pl perl script without the worry of setting the correct perl
11845 options. AcpiBin runs on Windows and has not yet been generated/validated
11847 the Linux/Unix environment (but should be soon).
11849 Updated and fixed the table dump option for AcpiBin (-d). This option
11850 converts a single ACPI table to a hex/ascii file, similar to the output
11854 Code and Data Size: Current and previous core subsystem library sizes are
11855 shown below. These are the code and data sizes for the acpica.lib
11857 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11858 any ACPI driver or OSPM code. The debug version of the code includes the
11859 debug output trace mechanism and has a much larger code and data size.
11861 that these values will vary depending on the efficiency of the compiler
11863 the compiler options used during generation.
11866 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11867 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11869 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11870 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11873 2) iASL Compiler/Disassembler:
11875 Disassembler fix: Added a check to ensure that the table length found in
11877 ACPI table header within the input file is not longer than the actual
11879 file size. This indicates some kind of file or table corruption.
11881 ----------------------------------------
11882 29 March 2005. Summary of changes for version 20050329:
11884 1) ACPI CA Core Subsystem:
11886 An error is now generated if an attempt is made to create a Buffer Field
11888 length zero (A CreateField with a length operand of zero.)
11890 The interpreter now issues a warning whenever executable code at the
11892 level is detected during ACPI table load. This will give some idea of the
11893 prevalence of this type of code.
11895 Implemented support for references to named objects (other than control
11896 methods) within package objects.
11898 Enhanced package object output for the debug object. Package objects are
11900 completely dumped, showing all elements.
11902 Enhanced miscellaneous object output for the debug object. Any object can
11903 now be written to the debug object (for example, a device object can be
11904 written, and the type of the object will be displayed.)
11906 The "static" qualifier has been added to all local functions across both
11908 core subsystem and the iASL compiler.
11910 The number of "long" lines (> 80 chars) within the source has been
11911 significantly reduced, by about 1/3.
11913 Cleaned up all header files to ensure that all CA/iASL functions are
11914 prototyped (even static functions) and the formatting is consistent.
11916 Two new header files have been added, acopcode.h and acnames.h.
11918 Removed several obsolete functions that were no longer used.
11920 Code and Data Size: Current and previous core subsystem library sizes are
11921 shown below. These are the code and data sizes for the acpica.lib
11923 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11924 any ACPI driver or OSPM code. The debug version of the code includes the
11925 debug output trace mechanism and has a much larger code and data size.
11927 that these values will vary depending on the efficiency of the compiler
11929 the compiler options used during generation.
11932 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11933 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11935 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11936 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11940 2) iASL Compiler/Disassembler:
11942 Fixed a problem with the resource descriptor generation/support. For the
11943 ResourceSourceIndex and the ResourceSource fields, both must be present,
11945 both must be not present - can't have one without the other.
11947 The compiler now returns non-zero from the main procedure if any errors
11949 occurred during the compilation.
11952 ----------------------------------------
11953 09 March 2005. Summary of changes for version 20050309:
11955 1) ACPI CA Core Subsystem:
11957 The string-to-buffer implicit conversion code has been modified again
11959 a change to the ACPI specification. In order to match the behavior of
11961 other major ACPI implementation, the target buffer is no longer truncated
11963 the source string is smaller than an existing target buffer. This change
11964 requires an update to the ACPI spec, and should eliminate the recent
11965 AE_AML_BUFFER_LIMIT issues.
11967 The "implicit return" support was rewritten to a new algorithm that
11969 the general case. Rather than attempt to determine when a method is about
11971 exit, the result of every ASL operator is saved momentarily until the
11973 next ASL operator is executed. Therefore, no matter how the method exits,
11974 there will always be a saved implicit return value. This feature is only
11975 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11977 AE_AML_NO_RETURN_VALUE errors when enabled.
11979 Implemented implicit conversion support for the predicate (operand) of
11981 If, Else, and While operators. String and Buffer arguments are
11983 converted to Integers.
11985 Changed the string-to-integer conversion behavior to match the new ACPI
11986 errata: "If no integer object exists, a new integer is created. The ASCII
11987 string is interpreted as a hexadecimal constant. Each string character is
11988 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11989 with the first character as the most significant digit, and ending with
11991 first non-hexadecimal character or end-of-string." This means that the
11993 non-hex character terminates the conversion and this is the code that was
11996 Fixed a problem where the ObjectType operator would fail (fault) when
11998 on an Index of a Package which pointed to a null package element. The
11999 operator now properly returns zero (Uninitialized) in this case.
12001 Fixed a problem where the While operator used excessive memory by not
12002 properly popping the result stack during execution. There was no memory
12004 after execution, however. (Code provided by Valery Podrezov.)
12006 Fixed a problem where references to control methods within Package
12008 caused the method to be invoked, instead of producing a reference object
12009 pointing to the method.
12011 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
12013 improve performance and reduce code size. (Code provided by Alexey
12016 Code and Data Size: Current and previous core subsystem library sizes are
12017 shown below. These are the code and data sizes for the acpica.lib
12019 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12020 any ACPI driver or OSPM code. The debug version of the code includes the
12021 debug output trace mechanism and has a much larger code and data size.
12023 that these values will vary depending on the efficiency of the compiler
12025 the compiler options used during generation.
12028 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12029 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12031 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12032 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12035 2) iASL Compiler/Disassembler:
12037 Fixed a problem with the Return operator with no arguments. Since the AML
12038 grammar for the byte encoding requires an operand for the Return opcode,
12040 compiler now emits a Return(Zero) for this case. An ACPI specification
12041 update has been written for this case.
12043 For tables other than the DSDT, namepath optimization is automatically
12044 disabled. This is because SSDTs can be loaded anywhere in the namespace,
12046 compiler has no knowledge of where, and thus cannot optimize namepaths.
12048 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
12049 inadvertently omitted from the ACPI specification, and will require an
12050 update to the spec.
12052 The source file scan for ASCII characters is now optional (-a). This
12054 was made because some vendors place non-ascii characters within comments.
12055 However, the scan is simply a brute-force byte compare to ensure all
12056 characters in the file are in the range 0x00 to 0x7F.
12058 Fixed a problem with the CondRefOf operator where the compiler was
12059 inappropriately checking for the existence of the target. Since the point
12061 the operator is to check for the existence of the target at run-time, the
12062 compiler no longer checks for the target existence.
12064 Fixed a problem where errors generated from the internal AML interpreter
12065 during constant folding were not handled properly, causing a fault.
12067 Fixed a problem with overly aggressive range checking for the Stall
12068 operator. The valid range (max 255) is now only checked if the operand is
12070 type Integer. All other operand types cannot be statically checked.
12072 Fixed a problem where control method references within the RefOf,
12074 and ObjectType operators were not treated properly. They are now treated
12076 actual references, not method invocations.
12078 Fixed and enhanced the "list namespace" option (-ln). This option was
12080 a number of releases ago.
12082 Improved error handling for the Field, IndexField, and BankField
12084 The compiler now cleanly reports and recovers from errors in the field
12085 component (FieldUnit) list.
12087 Fixed a disassembler problem where the optional ResourceDescriptor fields
12088 TRS and TTP were not always handled correctly.
12090 Disassembler - Comments in output now use "//" instead of "/*"
12092 ----------------------------------------
12093 28 February 2005. Summary of changes for version 20050228:
12095 1) ACPI CA Core Subsystem:
12097 Fixed a problem where the result of an Index() operator (an object
12098 reference) must increment the reference count on the target object for
12100 life of the object reference.
12102 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
12103 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
12105 resource descriptors.
12107 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
12108 Space Descriptor" string, indicating interpreter support for the
12112 Implemented header support for the new ACPI 3.0 FADT flag bits.
12114 Implemented header support for the new ACPI 3.0 PCI Express bits for the
12116 status/enable registers.
12118 Updated header support for the MADT processor local Apic struct and MADT
12119 platform interrupt source struct for new ACPI 3.0 fields.
12121 Implemented header support for the SRAT and SLIT ACPI tables.
12123 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
12127 Code and Data Size: Current and previous core subsystem library sizes are
12128 shown below. These are the code and data sizes for the acpica.lib
12130 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12131 any ACPI driver or OSPM code. The debug version of the code includes the
12132 debug output trace mechanism and has a much larger code and data size.
12134 that these values will vary depending on the efficiency of the compiler
12136 the compiler options used during generation.
12139 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12140 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12142 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12143 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12146 2) iASL Compiler/Disassembler:
12148 Fixed a problem with the internal 64-bit String-to-integer conversion
12150 strings less than two characters long.
12152 Fixed a problem with constant folding where the result of the Index()
12153 operator can not be considered a constant. This means that Index() cannot
12155 a type3 opcode and this will require an update to the ACPI specification.
12157 Disassembler: Implemented support for the TTP, MTP, and TRS resource
12158 descriptor fields. These fields were inadvertently ignored and not output
12160 the disassembly of the resource descriptor.
12163 ----------------------------------------
12164 11 February 2005. Summary of changes for version 20050211:
12166 1) ACPI CA Core Subsystem:
12168 Implemented ACPI 3.0 support for implicit conversion within the Match()
12169 operator. MatchObjects can now be of type integer, buffer, or string
12171 of just type integer. Package elements are implicitly converted to the
12173 of the MatchObject. This change aligns the behavior of Match() with the
12174 behavior of the other logical operators (LLess(), etc.) It also requires
12176 errata change to the ACPI specification as this support was intended for
12177 ACPI 3.0, but was inadvertently omitted.
12179 Fixed a problem with the internal implicit "to buffer" conversion.
12181 that are converted to buffers will cause buffer truncation if the string
12183 smaller than the target buffer. Integers that are converted to buffers
12185 not cause buffer truncation, only zero extension (both as per the ACPI
12186 spec.) The problem was introduced when code was added to truncate the
12187 buffer, but this should not be performed in all cases, only the string
12190 Fixed a problem with the Buffer and Package operators where the
12192 would get confused if two such operators were used as operands to an ASL
12193 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
12194 stack was not being popped after the execution of these operators,
12196 in an AE_NO_RETURN_VALUE exception.
12198 Fixed a problem with constructs of the form Store(Index(...),...). The
12199 reference object returned from Index was inadvertently resolved to an
12201 value. This problem was introduced in version 20050114 when the behavior
12203 Store() was modified to restrict the object types that can be used as the
12204 source operand (to match the ACPI specification.)
12206 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
12208 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
12210 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
12212 Code and Data Size: Current and previous core subsystem library sizes are
12213 shown below. These are the code and data sizes for the acpica.lib
12215 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12216 any ACPI driver or OSPM code. The debug version of the code includes the
12217 debug output trace mechanism and has a much larger code and data size.
12219 that these values will vary depending on the efficiency of the compiler
12221 the compiler options used during generation.
12224 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12225 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12227 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12228 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12231 2) iASL Compiler/Disassembler:
12233 Fixed a code generation problem in the constant folding optimization code
12234 where incorrect code was generated if a constant was reduced to a buffer
12235 object (i.e., a reduced type 5 opcode.)
12237 Fixed a typechecking problem for the ToBuffer operator. Caused by an
12238 incorrect return type in the internal opcode information table.
12240 ----------------------------------------
12241 25 January 2005. Summary of changes for version 20050125:
12243 1) ACPI CA Core Subsystem:
12245 Fixed a recently introduced problem with the Global Lock where the
12246 underlying semaphore was not created. This problem was introduced in
12247 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
12248 Acquire() operation on _GL.
12250 The local object cache is now optional, and is disabled by default. Both
12251 AcpiExec and the iASL compiler enable the cache because they run in user
12252 mode and this enhances their performance. #define
12253 ACPI_ENABLE_OBJECT_CACHE
12254 to enable the local cache.
12256 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
12258 optional "implicit return" support where an error was returned if no
12260 object was expected, but one was implicitly returned. AE_OK is now
12262 in this case and the implicitly returned object is deleted.
12263 AcpiUtEvaluateObject is only occasionally used, and only to execute
12265 methods such as _STA and _INI where the return type is known up front.
12267 Fixed a few issues with the internal convert-to-integer code. It now
12269 an error if an attempt is made to convert a null string, a string of only
12270 blanks/tabs, or a zero-length buffer. This affects both implicit
12272 and explicit conversion via the ToInteger() operator.
12274 The internal debug code in AcpiUtAcquireMutex has been commented out. It
12276 not needed for normal operation and should increase the performance of
12278 entire subsystem. The code remains in case it is needed for debug
12282 The AcpiExec source and makefile are included in the Unix/Linux package
12286 Code and Data Size: Current and previous core subsystem library sizes are
12287 shown below. These are the code and data sizes for the acpica.lib
12289 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12290 any ACPI driver or OSPM code. The debug version of the code includes the
12291 debug output trace mechanism and has a much larger code and data size.
12293 that these values will vary depending on the efficiency of the compiler
12295 the compiler options used during generation.
12298 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12299 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12301 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12302 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12304 2) iASL Compiler/Disassembler:
12306 Switch/Case support: A warning is now issued if the type of the Switch
12308 cannot be determined at compile time. For example, Switch(Arg0) will
12309 generate the warning, and the type is assumed to be an integer. As per
12311 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
12315 Switch/Case support: Implemented support for buffer and string objects as
12316 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
12317 buffers and strings.
12319 Switch/Case support: The emitted code for the LEqual() comparisons now
12321 the switch value as the first operand, not the second. The case value is
12323 the second operand, and this allows the case value to be implicitly
12324 converted to the type of the switch value, not the other way around.
12326 Switch/Case support: Temporary variables are now emitted immediately
12328 the control method, not at the global level. This means that there are
12330 36 temps available per-method, not 36 temps per-module as was the case
12332 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
12334 ----------------------------------------
12335 14 January 2005. Summary of changes for version 20050114:
12337 Added 2005 copyright to all module headers. This affects every module in
12338 the core subsystem, iASL compiler, and the utilities.
12340 1) ACPI CA Core Subsystem:
12342 Fixed an issue with the String-to-Buffer conversion code where the string
12343 null terminator was not included in the buffer after conversion, but
12345 is existing ASL that assumes the string null terminator is included. This
12347 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12348 introduced in the previous version when the code was updated to correctly
12349 set the converted buffer size as per the ACPI specification. The ACPI
12351 is ambiguous and will be updated to specify that the null terminator must
12353 included in the converted buffer. This also affects the ToBuffer() ASL
12356 Fixed a problem with the Mid() ASL/AML operator where it did not work
12357 correctly on Buffer objects. Newly created sub-buffers were not being
12362 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12363 performed on the OemId and OemTableId table header fields. These fields
12365 not null terminated, so strncmp is now used instead of strcmp.
12367 Implemented a restriction on the Store() ASL/AML operator to align the
12368 behavior with the ACPI specification. Previously, any object could be
12370 as the source operand. Now, the only objects that may be used are
12372 Buffers, Strings, Packages, Object References, and DDB Handles. If
12373 necessary, the original behavior can be restored by enabling the
12374 EnableInterpreterSlack flag.
12376 Enhanced the optional "implicit return" support to allow an implicit
12378 value from methods that are invoked externally via the AcpiEvaluateObject
12379 interface. This enables implicit returns from the _STA and _INI methods,
12382 Changed the Revision() ASL/AML operator to return the current version of
12384 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12386 the supported ACPI version (This is the function of the _REV method).
12388 Updated the _REV predefined method to return the currently supported
12392 Implemented batch mode option for the AcpiExec utility (-b).
12394 Code and Data Size: Current and previous core subsystem library sizes are
12395 shown below. These are the code and data sizes for the acpica.lib
12397 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12398 any ACPI driver or OSPM code. The debug version of the code includes the
12399 debug output trace mechanism and has a much larger code and data size.
12401 that these values will vary depending on the efficiency of the compiler
12403 the compiler options used during generation.
12406 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12407 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12409 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12410 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12412 ----------------------------------------
12413 10 December 2004. Summary of changes for version 20041210:
12415 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12416 ACPI CA core subsystem.
12418 1) ACPI CA Core Subsystem:
12420 Fixed a problem in the ToDecimalString operator where the resulting
12422 length was incorrectly calculated. The length is now calculated exactly,
12423 eliminating incorrect AE_STRING_LIMIT exceptions.
12425 Fixed a problem in the ToHexString operator to allow a maximum 200
12427 string to be produced.
12429 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12431 routine where the length of the resulting buffer was not truncated to the
12432 new size (if the target buffer already existed).
12434 Code and Data Size: Current and previous core subsystem library sizes are
12435 shown below. These are the code and data sizes for the acpica.lib
12437 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12438 any ACPI driver or OSPM code. The debug version of the code includes the
12439 debug output trace mechanism and has a much larger code and data size.
12441 that these values will vary depending on the efficiency of the compiler
12443 the compiler options used during generation.
12446 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12447 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12449 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12450 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12453 2) iASL Compiler/Disassembler:
12455 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12456 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12457 Includes support in the disassembler.
12459 Implemented support for the new (ACPI 3.0) parameter to the Register
12463 Fixed a problem where the _HE resource name for the Interrupt macro was
12464 referencing bit 0 instead of bit 1.
12466 Implemented check for maximum 255 interrupts in the Interrupt macro.
12468 Fixed a problem with the predefined resource descriptor names where
12469 incorrect AML code was generated if the offset within the resource buffer
12470 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12471 but did not update the surrounding package lengths.
12473 Changes to the Dma macro: All channels within the channel list must be
12475 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12476 optional (default is BusMaster).
12478 Implemented check for maximum 7 data bytes for the VendorShort macro.
12480 The ReadWrite parameter is now optional for the Memory32 and similar
12483 ----------------------------------------
12484 03 December 2004. Summary of changes for version 20041203:
12486 1) ACPI CA Core Subsystem:
12488 The low-level field insertion/extraction code (exfldio) has been
12490 rewritten to eliminate unnecessary complexity, bugs, and boundary
12493 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12495 operators where the input operand could be inadvertently deleted if no
12496 conversion was necessary (e.g., if the input to ToInteger was an Integer
12499 Fixed a problem with the ToDecimalString and ToHexString where an
12501 exception code was returned if the resulting string would be > 200 chars.
12502 AE_STRING_LIMIT is now returned.
12504 Fixed a problem with the Concatenate operator where AE_OK was always
12505 returned, even if the operation failed.
12507 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12508 semaphores to be allocated.
12510 Code and Data Size: Current and previous core subsystem library sizes are
12511 shown below. These are the code and data sizes for the acpica.lib
12513 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12514 any ACPI driver or OSPM code. The debug version of the code includes the
12515 debug output trace mechanism and has a much larger code and data size.
12517 that these values will vary depending on the efficiency of the compiler
12519 the compiler options used during generation.
12522 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12523 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12525 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12526 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12529 2) iASL Compiler/Disassembler:
12531 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12532 recently introduced in 20041119.
12534 Fixed a problem with the ToUUID macro where the upper nybble of each
12536 byte was inadvertently set to zero.
12538 ----------------------------------------
12539 19 November 2004. Summary of changes for version 20041119:
12541 1) ACPI CA Core Subsystem:
12543 Fixed a problem in the internal ConvertToInteger routine where new
12545 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12547 buffers and strings to integers.
12549 Implemented support to store a value to an Index() on a String object.
12551 is an ACPI 2.0 feature that had not yet been implemented.
12553 Implemented new behavior for storing objects to individual package
12555 (via the Index() operator). The previous behavior was to invoke the
12557 conversion rules if an object was already present at the index. The new
12558 behavior is to simply delete any existing object and directly store the
12560 object. Although the ACPI specification seems unclear on this subject,
12562 ACPI implementations behave in this manner. (This is the root of the
12563 AE_BAD_HEX_CONSTANT issue.)
12565 Modified the RSDP memory scan mechanism to support the extended checksum
12567 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12568 RSDP signature is found with a valid checksum.
12570 Code and Data Size: Current and previous core subsystem library sizes are
12571 shown below. These are the code and data sizes for the acpica.lib
12573 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12574 any ACPI driver or OSPM code. The debug version of the code includes the
12575 debug output trace mechanism and has a much larger code and data size.
12577 that these values will vary depending on the efficiency of the compiler
12579 the compiler options used during generation.
12582 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12583 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12585 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12586 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12589 2) iASL Compiler/Disassembler:
12591 Fixed a missing semicolon in the aslcompiler.y file.
12593 ----------------------------------------
12594 05 November 2004. Summary of changes for version 20041105:
12596 1) ACPI CA Core Subsystem:
12598 Implemented support for FADT revision 2. This was an interim table
12600 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12602 Implemented optional support to allow uninitialized LocalX and ArgX
12603 variables in a control method. The variables are initialized to an
12605 object with a value of zero. This support is enabled by setting the
12606 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12608 Implemented support for Integer objects for the SizeOf operator. Either
12610 or 8 is returned, depending on the current integer size (32-bit or 64-
12612 depending on the parent table revision).
12614 Fixed a problem in the implementation of the SizeOf and ObjectType
12616 where the operand was resolved to a value too early, causing incorrect
12617 return values for some objects.
12619 Fixed some possible memory leaks during exceptional conditions.
12621 Code and Data Size: Current and previous core subsystem library sizes are
12622 shown below. These are the code and data sizes for the acpica.lib
12624 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12625 any ACPI driver or OSPM code. The debug version of the code includes the
12626 debug output trace mechanism and has a much larger code and data size.
12628 that these values will vary depending on the efficiency of the compiler
12630 the compiler options used during generation.
12633 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12634 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12636 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12637 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12640 2) iASL Compiler/Disassembler:
12642 Implemented support for all ACPI 3.0 reserved names and methods.
12644 Implemented all ACPI 3.0 grammar elements in the front-end, including
12645 support for semicolons.
12647 Implemented the ACPI 3.0 Function() and ToUUID() macros
12649 Fixed a problem in the disassembler where a Scope() operator would not be
12650 emitted properly if the target of the scope was in another table.
12652 ----------------------------------------
12653 15 October 2004. Summary of changes for version 20041015:
12655 Note: ACPI CA is currently undergoing an in-depth and complete formal
12656 evaluation to test/verify the following areas. Other suggestions are
12657 welcome. This will result in an increase in the frequency of releases and
12658 the number of bug fixes in the next few months.
12659 - Functional tests for all ASL/AML operators
12660 - All implicit/explicit type conversions
12661 - Bit fields and operation regions
12662 - 64-bit math support and 32-bit-only "truncated" math support
12663 - Exceptional conditions, both compiler and interpreter
12664 - Dynamic object deletion and memory leaks
12665 - ACPI 3.0 support when implemented
12666 - External interfaces to the ACPI subsystem
12669 1) ACPI CA Core Subsystem:
12671 Fixed two alignment issues on 64-bit platforms - within debug statements
12673 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12675 field within the non-aligned ACPI generic address structure.
12677 Fixed a problem in the Increment and Decrement operators where incorrect
12678 operand resolution could result in the inadvertent modification of the
12679 original integer when the integer is passed into another method as an
12680 argument and the arg is then incremented/decremented.
12682 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12684 BCD number were truncated during conversion.
12686 Fixed a problem in the ToDecimal operator where the length of the
12688 string could be set incorrectly too long if the input operand was a
12692 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12694 within a buffer would prematurely terminate a compare between buffer
12697 Added a check for string overflow (>200 characters as per the ACPI
12698 specification) during the Concatenate operator with two string operands.
12700 Code and Data Size: Current and previous core subsystem library sizes are
12701 shown below. These are the code and data sizes for the acpica.lib
12703 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12704 any ACPI driver or OSPM code. The debug version of the code includes the
12705 debug output trace mechanism and has a much larger code and data size.
12707 that these values will vary depending on the efficiency of the compiler
12709 the compiler options used during generation.
12712 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12713 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12715 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12716 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12720 2) iASL Compiler/Disassembler:
12722 Allow the use of the ObjectType operator on uninitialized Locals and Args
12723 (returns 0 as per the ACPI specification).
12725 Fixed a problem where the compiler would fault if there was a syntax
12727 in the FieldName of all of the various CreateXXXField operators.
12729 Disallow the use of lower case letters within the EISAID macro, as per
12731 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12733 U is an uppercase letter and N is a hex digit.
12736 ----------------------------------------
12737 06 October 2004. Summary of changes for version 20041006:
12739 1) ACPI CA Core Subsystem:
12741 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12742 implements a 64-bit timer with 100 nanosecond granularity.
12744 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12745 implement the ACPI 3.0 Timer operator. This allows the host OS to
12747 the timer with the best clock available. Also, it keeps the core
12749 out of the clock handling business, since the host OS (usually) performs
12752 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12753 functions use a 64-bit address which is part of the packed ACPI Generic
12754 Address Structure. Since the structure is non-aligned, the alignment
12756 are now used to extract the address to a local variable before use.
12758 Fixed a problem where the ToInteger operator assumed all input strings
12760 hexadecimal. The operator now handles both decimal strings and hex
12762 (prefixed with "0x").
12764 Fixed a problem where the string length in the string object created as a
12765 result of the internal ConvertToString procedure could be incorrect. This
12766 potentially affected all implicit conversions and also the
12768 and ToHexString operators.
12770 Fixed two problems in the ToString operator. If the length parameter was
12771 zero, an incorrect string object was created and the value of the input
12772 length parameter was inadvertently changed from zero to Ones.
12774 Fixed a problem where the optional ResourceSource string in the
12776 resource macro was ignored.
12778 Simplified the interfaces to the internal division functions, reducing
12780 size and complexity.
12782 Code and Data Size: Current and previous core subsystem library sizes are
12783 shown below. These are the code and data sizes for the acpica.lib
12785 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12786 any ACPI driver or OSPM code. The debug version of the code includes the
12787 debug output trace mechanism and has a much larger code and data size.
12789 that these values will vary depending on the efficiency of the compiler
12791 the compiler options used during generation.
12794 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12795 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12797 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12798 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12801 2) iASL Compiler/Disassembler:
12803 Implemented support for the ACPI 3.0 Timer operator.
12805 Fixed a problem where the Default() operator was inadvertently ignored in
12807 Switch/Case block. This was a problem in the translation of the Switch
12808 statement to If...Else pairs.
12810 Added support to allow a standalone Return operator, with no parentheses
12814 Fixed a problem with code generation for the ElseIf operator where the
12815 translated Else...If parse tree was improperly constructed leading to the
12818 ----------------------------------------
12819 22 September 2004. Summary of changes for version 20040922:
12821 1) ACPI CA Core Subsystem:
12823 Fixed a problem with the implementation of the LNot() operator where
12825 was not returned for the TRUE case. Changed the code to return Ones
12827 of (!Arg) which was usually 1. This change affects iASL constant folding
12829 this operator also.
12831 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12833 initialized properly -- Now zero the entire buffer in this case where the
12834 buffer already exists.
12836 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12837 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12838 related code considerably. This will require changes/updates to all OS
12839 interface layers (OSLs.)
12841 Implemented a new external interface, AcpiInstallExceptionHandler, to
12843 a system exception handler to be installed. This handler is invoked upon
12845 run-time exception that occurs during control method execution.
12847 Added support for the DSDT in AcpiTbFindTable. This allows the
12848 DataTableRegion() operator to access the local copy of the DSDT.
12850 Code and Data Size: Current and previous core subsystem library sizes are
12851 shown below. These are the code and data sizes for the acpica.lib
12853 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12854 any ACPI driver or OSPM code. The debug version of the code includes the
12855 debug output trace mechanism and has a much larger code and data size.
12857 that these values will vary depending on the efficiency of the compiler
12859 the compiler options used during generation.
12862 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12863 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12865 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12866 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12869 2) iASL Compiler/Disassembler:
12871 Fixed a problem with constant folding and the LNot operator. LNot was
12872 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12874 could result in the generation of an incorrect folded/reduced constant.
12876 End-Of-File is now allowed within a "//"-style comment. A parse error no
12877 longer occurs if such a comment is at the very end of the input ASL
12881 Implemented the "-r" option to override the Revision in the table header.
12882 The initial use of this option will be to simplify the evaluation of the
12884 interpreter by allowing a single ASL source module to be compiled for
12886 32-bit or 64-bit integers.
12889 ----------------------------------------
12890 27 August 2004. Summary of changes for version 20040827:
12892 1) ACPI CA Core Subsystem:
12894 - Implemented support for implicit object conversion in the non-numeric
12895 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12897 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12898 the second operand is implicitly converted on the fly to match the type
12900 the first operand. For example:
12902 LEqual (Source1, Source2)
12904 Source1 and Source2 must each evaluate to an integer, a string, or a
12906 The data type of Source1 dictates the required type of Source2. Source2
12908 implicitly converted if necessary to match the type of Source1.
12910 - Updated and corrected the behavior of the string conversion support.
12912 rules concerning conversion of buffers to strings (according to the ACPI
12913 specification) are as follows:
12915 ToDecimalString - explicit byte-wise conversion of buffer to string of
12916 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12918 conversion of buffer to string of hex values (0-FF) separated by commas.
12919 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12921 copy with no transform except NULL terminated. Any other implicit buffer-
12923 string conversion - byte-wise conversion of buffer to string of hex
12925 (0-FF) separated by spaces.
12927 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12929 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12931 one byte too short in the case of a node in the root scope. This could
12932 cause a fault during debug output.
12934 - Code and Data Size: Current and previous core subsystem library sizes
12936 shown below. These are the code and data sizes for the acpica.lib
12938 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12939 any ACPI driver or OSPM code. The debug version of the code includes the
12940 debug output trace mechanism and has a much larger code and data size.
12942 that these values will vary depending on the efficiency of the compiler
12944 the compiler options used during generation.
12947 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12948 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12950 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12951 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12954 2) iASL Compiler/Disassembler:
12956 - Fixed a Linux generation error.
12959 ----------------------------------------
12960 16 August 2004. Summary of changes for version 20040816:
12962 1) ACPI CA Core Subsystem:
12964 Designed and implemented support within the AML interpreter for the so-
12965 called "implicit return". This support returns the result of the last
12967 operation within a control method, in the absence of an explicit Return()
12968 operator. A few machines depend on this behavior, even though it is not
12969 explicitly supported by the ASL language. It is optional support that
12971 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12973 Removed support for the PCI_Config address space from the internal low
12975 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12976 support was not used internally, and would not work correctly anyway
12978 the PCI bus number and segment number were not supported. There are
12979 separate interfaces for PCI configuration space access because of the
12983 Code and Data Size: Current and previous core subsystem library sizes are
12984 shown below. These are the code and data sizes for the acpica.lib
12986 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12987 any ACPI driver or OSPM code. The debug version of the code includes the
12988 debug output trace mechanism and has a much larger code and data size.
12990 that these values will vary depending on the efficiency of the compiler
12992 the compiler options used during generation.
12995 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12996 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12998 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12999 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13002 2) iASL Compiler/Disassembler:
13004 Fixed a problem where constants in ASL expressions at the root level (not
13005 within a control method) could be inadvertently truncated during code
13006 generation. This problem was introduced in the 20040715 release.
13009 ----------------------------------------
13010 15 July 2004. Summary of changes for version 20040715:
13012 1) ACPI CA Core Subsystem:
13014 Restructured the internal HW GPE interfaces to pass/track the current
13016 of interrupts (enabled/disabled) in order to avoid possible deadlock and
13017 increase flexibility of the interfaces.
13019 Implemented a "lexicographical compare" for String and Buffer objects
13021 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
13023 as per further clarification to the ACPI specification. Behavior is
13025 to C library "strcmp".
13027 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
13028 external function. In the 32-bit non-debug case, the stack use has been
13029 reduced from 168 bytes to 32 bytes.
13031 Deployed a new run-time configuration flag,
13032 AcpiGbl_EnableInterpreterSlack,
13033 whose purpose is to allow the AML interpreter to forgive certain bad AML
13034 constructs. Default setting is FALSE.
13036 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
13038 support code. If enabled, it allows field access to go beyond the end of
13040 region definition if the field is within the region length rounded up to
13042 next access width boundary (a common coding error.)
13044 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
13045 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
13047 symbols are lowercased by the latest version of the AcpiSrc tool.
13049 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
13050 rename "Register" to simply "Reg" to prevent certain compilers from
13053 Code and Data Size: Current and previous core subsystem library sizes are
13054 shown below. These are the code and data sizes for the acpica.lib
13056 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13057 any ACPI driver or OSPM code. The debug version of the code includes the
13058 debug output trace mechanism and has a much larger code and data size.
13060 that these values will vary depending on the efficiency of the compiler
13062 the compiler options used during generation.
13065 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13066 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13068 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13069 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13072 2) iASL Compiler/Disassembler:
13074 Implemented full support for Package objects within the Case() operator.
13075 Note: The Break() operator is currently not supported within Case blocks
13076 (TermLists) as there is some question about backward compatibility with
13081 Fixed a problem where complex terms were not supported properly within
13085 Eliminated extraneous warning for compiler-emitted reserved names of the
13086 form "_T_x". (Used in Switch/Case operators.)
13088 Eliminated optimization messages for "_T_x" objects and small constants
13089 within the DefinitionBlock operator.
13092 ----------------------------------------
13093 15 June 2004. Summary of changes for version 20040615:
13095 1) ACPI CA Core Subsystem:
13097 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13099 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13102 All directory names in the entire source package are lower case, as they
13103 were in earlier releases.
13105 Implemented "Disassemble" command in the AML debugger that will
13107 a single control method.
13109 Code and Data Size: Current and previous core subsystem library sizes are
13110 shown below. These are the code and data sizes for the acpica.lib
13112 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13113 any ACPI driver or OSPM code. The debug version of the code includes the
13114 debug output trace mechanism and has a much larger code and data size.
13116 that these values will vary depending on the efficiency of the compiler
13118 the compiler options used during generation.
13121 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13122 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13125 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13126 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13129 2) iASL Compiler/Disassembler:
13131 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13133 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13136 All directory names in the entire source package are lower case, as they
13137 were in earlier releases.
13139 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
13142 Fixed an issue with the Windows version of the compiler where later
13144 of Windows place the FADT in the registry under the name "FADT" and not
13145 "FACP" as earlier versions did. This applies when using the -g or -
13146 d<nofilename> options. The compiler now looks for both strings as
13149 Fixed a problem with compiler namepath optimization where a namepath
13151 the Scope() operator could not be optimized if the namepath was a subpath
13153 the current scope path.
13155 ----------------------------------------
13156 27 May 2004. Summary of changes for version 20040527:
13158 1) ACPI CA Core Subsystem:
13160 Completed a new design and implementation for EBDA (Extended BIOS Data
13162 support in the RSDP scan code. The original code improperly scanned for
13164 EBDA by simply scanning from memory location 0 to 0x400. The correct
13166 is to first obtain the EBDA pointer from within the BIOS data area, then
13167 scan 1K of memory starting at the EBDA pointer. There appear to be few
13169 any machines that place the RSDP in the EBDA, however.
13171 Integrated a fix for a possible fault during evaluation of BufferField
13172 arguments. Obsolete code that was causing the problem was removed.
13174 Found and fixed a problem in the Field Support Code where data could be
13175 corrupted on a bit field read that starts on an aligned boundary but does
13176 not end on an aligned boundary. Merged the read/write "datum length"
13177 calculation code into a common procedure.
13179 Rolled in a couple of changes to the FreeBSD-specific header.
13182 Code and Data Size: Current and previous core subsystem library sizes are
13183 shown below. These are the code and data sizes for the acpica.lib
13185 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13186 any ACPI driver or OSPM code. The debug version of the code includes the
13187 debug output trace mechanism and has a much larger code and data size.
13189 that these values will vary depending on the efficiency of the compiler
13191 the compiler options used during generation.
13194 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13195 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13197 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13198 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13201 2) iASL Compiler/Disassembler:
13203 Fixed a generation warning produced by some overly-verbose compilers for
13207 ----------------------------------------
13208 14 May 2004. Summary of changes for version 20040514:
13210 1) ACPI CA Core Subsystem:
13212 Fixed a problem where hardware GPE enable bits sometimes not set properly
13213 during and after GPE method execution. Result of 04/27 changes.
13215 Removed extra "clear all GPEs" when sleeping/waking.
13217 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
13218 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
13220 the new AcpiEv* calls as appropriate.
13222 ACPI_OS_NAME was removed from the OS-specific headers. The default name
13224 now "Microsoft Windows NT" for maximum compatibility. However this can
13226 changed by modifying the acconfig.h file.
13228 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
13229 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
13231 Run _INI methods on ThermalZone objects. This is against the ACPI
13232 specification, but there is apparently ASL code in the field that has
13234 _INI methods, and apparently "other" AML interpreters execute them.
13236 Performed a full 16/32/64 bit lint that resulted in some small changes.
13238 Added a sleep simulation command to the AML debugger to test sleep code.
13240 Code and Data Size: Current and previous core subsystem library sizes are
13241 shown below. These are the code and data sizes for the acpica.lib
13243 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13244 any ACPI driver or OSPM code. The debug version of the code includes the
13245 debug output trace mechanism and has a much larger code and data size.
13247 that these values will vary depending on the efficiency of the compiler
13249 the compiler options used during generation.
13252 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13253 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13255 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13256 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13258 ----------------------------------------
13259 27 April 2004. Summary of changes for version 20040427:
13261 1) ACPI CA Core Subsystem:
13263 Completed a major overhaul of the GPE handling within ACPI CA. There are
13264 now three types of GPEs: wake-only, runtime-only, and combination
13266 The only GPEs allowed to be combination wake/run are for button-style
13267 devices such as a control-method power button, control-method sleep
13269 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
13271 referenced by any _PRW methods are marked for "runtime" and hardware
13272 enabled. Any GPE that is referenced by a _PRW method is marked for
13274 (and disabled at runtime). However, at sleep time, only those GPEs that
13275 have been specifically enabled for wake via the AcpiEnableGpe interface
13277 actually be hardware enabled.
13279 A new external interface has been added, AcpiSetGpeType(), that is meant
13281 be used by device drivers to force a GPE to a particular type. It will
13283 especially useful for the drivers for the button devices mentioned above.
13285 Completed restructuring of the ACPI CA initialization sequence so that
13286 default operation region handlers are installed before GPEs are
13288 and the _PRW methods are executed. This will prevent errors when the
13290 methods attempt to access system memory or I/O space.
13292 GPE enable/disable no longer reads the GPE enable register. We now keep
13294 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
13295 thus no longer depend on the hardware to maintain these bits.
13297 Always clear the wake status and fixed/GPE status bits before sleep, even
13300 Improved the AML debugger output for displaying the GPE blocks and their
13303 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
13307 Fixed a problem where the physical address was incorrectly calculated
13309 the Load() operator was used to directly load from an Operation Region
13311 loading from a Field object.) Also added check for minimum table length
13315 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
13318 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
13319 consistency with the other fields returned.
13321 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
13322 structure for each GPE in the system, so the size of this structure is
13325 CPU stack requirement reduction: Cleaned up the method execution and
13327 evaluation paths so that now a parameter structure is passed, instead of
13328 copying the various method parameters over and over again.
13330 In evregion.c: Correctly exit and reenter the interpreter region if and
13331 only if dispatching an operation region request to a user-installed
13333 Do not exit/reenter when dispatching to a default handler (e.g., default
13334 system memory or I/O handlers)
13337 Notes for updating drivers for the new GPE support. The following
13339 must be made to ACPI-related device drivers that are attached to one or
13341 GPEs: (This information will be added to the ACPI CA Programmer
13344 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13346 explicitly call AcpiEnableGpe.
13347 2) There is a new interface called AcpiSetGpeType. This should be called
13348 before enabling the GPE. Also, this interface will automatically disable
13349 the GPE if it is currently enabled.
13350 3) AcpiEnableGpe no longer supports a GPE type flag.
13352 Specific drivers that must be changed:
13354 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13355 AeGpeHandler, NULL);
13356 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13357 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13359 2) Button Drivers (Power, Lid, Sleep):
13360 Run _PRW method under parent device
13361 If _PRW exists: /* This is a control-method button */
13362 Extract GPE number and possibly GpeDevice
13363 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13364 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13366 For all other devices that have _PRWs, we automatically set the GPE type
13368 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13370 must be done on a selective basis, usually requiring some kind of user
13372 to allow the user to pick the wake devices.
13375 Code and Data Size: Current and previous core subsystem library sizes are
13376 shown below. These are the code and data sizes for the acpica.lib
13378 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13379 any ACPI driver or OSPM code. The debug version of the code includes the
13380 debug output trace mechanism and has a much larger code and data size.
13382 that these values will vary depending on the efficiency of the compiler
13384 the compiler options used during generation.
13387 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13388 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13391 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13392 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13396 ----------------------------------------
13397 02 April 2004. Summary of changes for version 20040402:
13399 1) ACPI CA Core Subsystem:
13401 Fixed an interpreter problem where an indirect store through an ArgX
13402 parameter was incorrectly applying the "implicit conversion rules" during
13403 the store. From the ACPI specification: "If the target is a method local
13405 argument (LocalX or ArgX), no conversion is performed and the result is
13406 stored directly to the target". The new behavior is to disable implicit
13407 conversion during ALL stores to an ArgX.
13409 Changed the behavior of the _PRW method scan to ignore any and all errors
13410 returned by a given _PRW. This prevents the scan from aborting from the
13411 failure of any single _PRW.
13413 Moved the runtime configuration parameters from the global init procedure
13415 static variables in acglobal.h. This will allow the host to override the
13416 default values easily.
13418 Code and Data Size: Current and previous core subsystem library sizes are
13419 shown below. These are the code and data sizes for the acpica.lib
13421 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13422 any ACPI driver or OSPM code. The debug version of the code includes the
13423 debug output trace mechanism and has a much larger code and data size.
13425 that these values will vary depending on the efficiency of the compiler
13427 the compiler options used during generation.
13430 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13431 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
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 2) iASL Compiler/Disassembler:
13439 iASL now fully disassembles SSDTs. However, External() statements are
13441 generated automatically for unresolved symbols at this time. This is a
13442 planned feature for future implementation.
13444 Fixed a scoping problem in the disassembler that occurs when the type of
13446 target of a Scope() operator is overridden. This problem caused an
13447 incorrectly nested internal namespace to be constructed.
13449 Any warnings or errors that are emitted during disassembly are now
13451 out automatically so that the resulting file can be recompiled without
13455 ----------------------------------------
13456 26 March 2004. Summary of changes for version 20040326:
13458 1) ACPI CA Core Subsystem:
13460 Implemented support for "wake" GPEs via interaction between GPEs and the
13461 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13462 identified as a WAKE GPE and by default will no longer be enabled at
13463 runtime. Previously, we were blindly enabling all GPEs with a
13465 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13467 believe this has been the cause of thousands of "spurious" GPEs on some
13470 This new GPE behavior is can be reverted to the original behavior (enable
13471 ALL GPEs at runtime) via a runtime flag.
13473 Fixed a problem where aliased control methods could not access objects
13474 properly. The proper scope within the namespace was not initialized
13475 (transferred to the target of the aliased method) before executing the
13478 Fixed a potential race condition on internal object deletion on the
13480 object in AcpiEvaluateObject.
13482 Integrated a fix for resource descriptors where both _MEM and _MTP were
13483 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13484 wide, 0x0F instead of 0x03.)
13486 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13489 fault in some cases.
13491 Updated Notify() values for debug statements in evmisc.c
13493 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13495 Code and Data Size: Current and previous core subsystem library sizes are
13496 shown below. These are the code and data sizes for the acpica.lib
13498 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13499 any ACPI driver or OSPM code. The debug version of the code includes the
13500 debug output trace mechanism and has a much larger code and data size.
13502 that these values will vary depending on the efficiency of the compiler
13504 the compiler options used during generation.
13508 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13509 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13511 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13512 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13514 ----------------------------------------
13515 11 March 2004. Summary of changes for version 20040311:
13517 1) ACPI CA Core Subsystem:
13519 Fixed a problem where errors occurring during the parse phase of control
13520 method execution did not abort cleanly. For example, objects created and
13521 installed in the namespace were not deleted. This caused all subsequent
13522 invocations of the method to return the AE_ALREADY_EXISTS exception.
13524 Implemented a mechanism to force a control method to "Serialized"
13526 if the method attempts to create namespace objects. (The root of the
13527 AE_ALREADY_EXISTS problem.)
13529 Implemented support for the predefined _OSI "internal" control method.
13530 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13532 "Windows 2001.1", and can be easily upgraded for new strings as
13534 This feature will allow "other" operating systems to execute the fully
13535 tested, "Windows" code path through the ASL code
13537 Global Lock Support: Now allows multiple acquires and releases with any
13538 internal thread. Removed concept of "owning thread" for this special
13541 Fixed two functions that were inappropriately declaring large objects on
13543 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13545 method execution considerably.
13547 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13548 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13550 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13551 defined on the machine.
13553 Implemented two runtime options: One to force all control method
13555 to "Serialized" to mimic Windows behavior, another to disable _OSI
13557 if it causes problems on a given machine.
13559 Code and Data Size: Current and previous core subsystem library sizes are
13560 shown below. These are the code and data sizes for the acpica.lib
13562 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13563 any ACPI driver or OSPM code. The debug version of the code includes the
13564 debug output trace mechanism and has a much larger code and data size.
13566 that these values will vary depending on the efficiency of the compiler
13568 the compiler options used during generation.
13571 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13572 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13574 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13575 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13577 2) iASL Compiler/Disassembler:
13579 Fixed an array size problem for FreeBSD that would cause the compiler to
13582 ----------------------------------------
13583 20 February 2004. Summary of changes for version 20040220:
13586 1) ACPI CA Core Subsystem:
13588 Implemented execution of _SxD methods for Device objects in the
13589 GetObjectInfo interface.
13591 Fixed calls to _SST method to pass the correct arguments.
13593 Added a call to _SST on wake to restore to "working" state.
13595 Check for End-Of-Buffer failure case in the WalkResources interface.
13597 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13598 structures to the beginning of the file.
13600 After wake, clear GPE status register(s) before enabling GPEs.
13602 After wake, clear/enable power button. (Perhaps we should clear/enable
13604 fixed events upon wake.)
13606 Fixed a couple of possible memory leaks in the Namespace manager.
13608 Integrated latest acnetbsd.h file.
13610 ----------------------------------------
13611 11 February 2004. Summary of changes for version 20040211:
13614 1) ACPI CA Core Subsystem:
13616 Completed investigation and implementation of the call-by-reference
13617 mechanism for control method arguments.
13619 Fixed a problem where a store of an object into an indexed package could
13620 fail if the store occurs within a different method than the method that
13621 created the package.
13623 Fixed a problem where the ToDecimal operator could return incorrect
13626 Fixed a problem where the CopyObject operator could fail on some of the
13628 obscure objects (e.g., Reference objects.)
13630 Improved the output of the Debug object to display buffer, package, and
13633 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13635 the expected result.
13637 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13638 ACPI_AML_INTERNAL exception.
13640 Integrated latest version of acfreebsd.h
13642 ----------------------------------------
13643 16 January 2004. Summary of changes for version 20040116:
13645 The purpose of this release is primarily to update the copyright years in
13646 each module, thus causing a huge number of diffs. There are a few small
13647 functional changes, however.
13649 1) ACPI CA Core Subsystem:
13651 Improved error messages when there is a problem finding one or more of
13653 required base ACPI tables
13655 Reintroduced the definition of APIC_HEADER in actbl.h
13657 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13659 Removed extraneous reference to NewObj in dsmthdat.c
13663 Fixed a problem introduced in December that disabled the correct
13665 of Resource Templates
13668 ----------------------------------------
13669 03 December 2003. Summary of changes for version 20031203:
13671 1) ACPI CA Core Subsystem:
13673 Changed the initialization of Operation Regions during subsystem
13674 init to perform two entire walks of the ACPI namespace; The first
13675 to initialize the regions themselves, the second to execute the
13676 _REG methods. This fixed some interdependencies across _REG
13677 methods found on some machines.
13679 Fixed a problem where a Store(Local0, Local1) could simply update
13680 the object reference count, and not create a new copy of the
13681 object if the Local1 is uninitialized.
13683 Implemented support for the _SST reserved method during sleep
13686 Implemented support to clear the SLP_TYP and SLP_EN bits when
13687 waking up, this is apparently required by some machines.
13689 When sleeping, clear the wake status only if SleepState is not S5.
13691 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13692 pointer arithmetic advanced a string pointer too far.
13694 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13695 could be returned if the requested table has not been loaded.
13697 Within the support for IRQ resources, restructured the handling of
13698 the active and edge/level bits.
13700 Fixed a few problems in AcpiPsxExecute() where memory could be
13701 leaked under certain error conditions.
13703 Improved error messages for the cases where the ACPI mode could
13706 Code and Data Size: Current and previous core subsystem library
13707 sizes are shown below. These are the code and data sizes for the
13708 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13709 these values do not include any ACPI driver or OSPM code. The
13710 debug version of the code includes the debug output trace
13711 mechanism and has a much larger code and data size. Note that
13712 these values will vary depending on the efficiency of the compiler
13713 and the compiler options used during generation.
13715 Previous Release (20031029):
13716 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13717 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13719 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13720 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13722 2) iASL Compiler/Disassembler:
13724 Implemented a fix for the iASL disassembler where a bad index was
13725 generated. This was most noticeable on 64-bit platforms
13728 ----------------------------------------
13729 29 October 2003. Summary of changes for version 20031029:
13731 1) ACPI CA Core Subsystem:
13734 Fixed a problem where a level-triggered GPE with an associated
13735 _Lxx control method was incorrectly cleared twice.
13737 Fixed a problem with the Field support code where an access can
13738 occur beyond the end-of-region if the field is non-aligned but
13739 extends to the very end of the parent region (resulted in an
13740 AE_AML_REGION_LIMIT exception.)
13742 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13743 would not get invoked on an RTC event. The RTC event bitmasks for
13744 the PM1 registers were not being initialized properly.
13746 Implemented support for executing _STA and _INI methods for
13747 Processor objects. Although this is currently not part of the
13748 ACPI specification, there is existing ASL code that depends on the
13749 init-time execution of these methods.
13751 Implemented and deployed a GetDescriptorName function to decode
13752 the various types of internal descriptors. Guards against null
13753 descriptors during debug output also.
13755 Implemented and deployed a GetNodeName function to extract the 4-
13756 character namespace node name. This function simplifies the debug
13757 and error output, as well as guarding against null pointers during
13760 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13761 simplify the debug and error output of 64-bit integers. This
13762 macro replaces the HIDWORD and LODWORD macros for dumping these
13765 Updated the implementation of the Stall() operator to only call
13766 AcpiOsStall(), and also return an error if the operand is larger
13767 than 255. This preserves the required behavior of not
13768 relinquishing the processor, as would happen if AcpiOsSleep() was
13769 called for "long stalls".
13771 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13772 initialized are now treated as NOOPs.
13774 Cleaned up a handful of warnings during 64-bit generation.
13776 Fixed a reported error where and incorrect GPE number was passed
13777 to the GPE dispatch handler. This value is only used for error
13778 output, however. Used this opportunity to clean up and streamline
13779 the GPE dispatch code.
13781 Code and Data Size: Current and previous core subsystem library
13782 sizes are shown below. These are the code and data sizes for the
13783 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13784 these values do not include any ACPI driver or OSPM code. The
13786 debug version of the code includes the debug output trace
13787 mechanism and has a much larger code and data size. Note that
13788 these values will vary depending on the efficiency of the compiler
13789 and the compiler options used during generation.
13791 Previous Release (20031002):
13792 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13793 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13795 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13796 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13799 2) iASL Compiler/Disassembler:
13801 Updated the iASL compiler to return an error if the operand to the
13802 Stall() operator is larger than 255.
13805 ----------------------------------------
13806 02 October 2003. Summary of changes for version 20031002:
13809 1) ACPI CA Core Subsystem:
13811 Fixed a problem with Index Fields where the index was not
13812 incremented for fields that require multiple writes to the
13813 index/data registers (Fields that are wider than the data
13816 Fixed a problem with all Field objects where a write could go
13817 beyond the end-of-field if the field was larger than the access
13818 granularity and therefore required multiple writes to complete the
13819 request. An extra write beyond the end of the field could happen
13822 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13823 would incorrectly be returned if the width of the Data Register
13824 was larger than the specified field access width.
13826 Completed fixes for LoadTable() and Unload() and verified their
13827 operation. Implemented full support for the "DdbHandle" object
13828 throughout the ACPI CA subsystem.
13830 Implemented full support for the MADT and ECDT tables in the ACPI
13831 CA header files. Even though these tables are not directly
13832 consumed by ACPI CA, the header definitions are useful for ACPI
13835 Integrated resource descriptor fixes posted to the Linux ACPI
13836 list. This included checks for minimum descriptor length, and
13837 support for trailing NULL strings within descriptors that have
13838 optional string elements.
13840 Code and Data Size: Current and previous core subsystem library
13841 sizes are shown below. These are the code and data sizes for the
13842 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13843 these values do not include any ACPI driver or OSPM code. The
13844 debug version of the code includes the debug output trace
13845 mechanism and has a much larger code and data size. Note that
13846 these values will vary depending on the efficiency of the compiler
13847 and the compiler options used during generation.
13849 Previous Release (20030918):
13850 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13851 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13853 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13854 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13859 Implemented detection of non-ASCII characters within the input
13860 source ASL file. This catches attempts to compile binary (AML)
13861 files early in the compile, with an informative error message.
13863 Fixed a problem where the disassembler would fault if the output
13864 filename could not be generated or if the output file could not be
13867 ----------------------------------------
13868 18 September 2003. Summary of changes for version 20030918:
13871 1) ACPI CA Core Subsystem:
13873 Found and fixed a longstanding problem with the late execution of
13874 the various deferred AML opcodes (such as Operation Regions,
13875 Buffer Fields, Buffers, and Packages). If the name string
13876 specified for the name of the new object placed the object in a
13877 scope other than the current scope, the initialization/execution
13878 of the opcode failed. The solution to this problem was to
13879 implement a mechanism where the late execution of such opcodes
13880 does not attempt to lookup/create the name a second time in an
13881 incorrect scope. This fixes the "region size computed
13882 incorrectly" problem.
13884 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13885 Global Lock AE_BAD_PARAMETER error.
13887 Fixed several 64-bit issues with prototypes, casting and data
13890 Removed duplicate prototype from acdisasm.h
13892 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13894 Code and Data Size: Current and previous core subsystem library
13895 sizes are shown below. These are the code and data sizes for the
13896 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13897 these values do not include any ACPI driver or OSPM code. The
13898 debug version of the code includes the debug output trace
13899 mechanism and has a much larger code and data size. Note that
13900 these values will vary depending on the efficiency of the compiler
13901 and the compiler options used during generation.
13905 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13906 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13908 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13909 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13914 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13915 correct sleep time in seconds.
13917 ----------------------------------------
13918 14 July 2003. Summary of changes for version 20030619:
13920 1) ACPI CA Core Subsystem:
13922 Parse SSDTs in order discovered, as opposed to reverse order
13925 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13932 Dynamically allocate SDT list (suggested by Andi Kleen)
13934 proc function return value cleanups (Andi Kleen)
13936 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13938 Make it so acpismp=force works (reported by Andrew Morton)
13941 ----------------------------------------
13942 19 June 2003. Summary of changes for version 20030619:
13944 1) ACPI CA Core Subsystem:
13946 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13948 Do not acquire a semaphore in the S5 shutdown path.
13950 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13952 Fix sleep/stall code reversal. (Andi Kleen)
13954 Revert a change having to do with control method calling
13959 acpiphp update (Takayoshi Kochi)
13961 Export acpi_disabled for sonypi (Stelian Pop)
13963 Mention acpismp=force in config help
13965 Re-add acpitable.c and acpismp=force. This improves backwards
13967 compatibility and also cleans up the code to a significant degree.
13969 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13971 ----------------------------------------
13972 22 May 2003. Summary of changes for version 20030522:
13974 1) ACPI CA Core Subsystem:
13976 Found and fixed a reported problem where an AE_NOT_FOUND error
13977 occurred occasionally during _BST evaluation. This turned out to
13978 be an Owner ID allocation issue where a called method did not get
13979 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13980 ID UINT16 would wraparound so that the ID would be the same as the
13981 caller's and the called method would delete the caller's
13984 Implemented extended error reporting for control methods that are
13985 aborted due to a run-time exception. Output includes the exact
13986 AML instruction that caused the method abort, a dump of the method
13987 locals and arguments at the time of the abort, and a trace of all
13988 nested control method calls.
13990 Modified the interpreter to allow the creation of buffers of zero
13991 length from the AML code. Implemented new code to ensure that no
13992 attempt is made to actually allocate a memory buffer (of length
13993 zero) - instead, a simple buffer object with a NULL buffer pointer
13994 and length zero is created. A warning is no longer issued when
13995 the AML attempts to create a zero-length buffer.
13997 Implemented a workaround for the "leading asterisk issue" in
13998 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13999 asterisk is automatically removed if present in any HID, UID, or
14000 CID strings. The iASL compiler will still flag this asterisk as
14003 Implemented full support for _CID methods that return a package of
14004 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
14005 now additionally returns a device _CID list if present. This
14006 required a change to the external interface in order to pass an
14007 ACPI_BUFFER object as a parameter since the _CID list is of
14010 Fixed a problem with the new AE_SAME_HANDLER exception where
14011 handler initialization code did not know about this exception.
14013 Code and Data Size: Current and previous core subsystem library
14014 sizes are shown below. These are the code and data sizes for the
14015 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14016 these values do not include any ACPI driver or OSPM code. The
14017 debug version of the code includes the debug output trace
14018 mechanism and has a much larger code and data size. Note that
14019 these values will vary depending on the efficiency of the compiler
14020 and the compiler options used during generation.
14022 Previous Release (20030509):
14023 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14024 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14026 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14027 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14032 Fixed a bug in which we would reinitialize the ACPI interrupt
14033 after it was already working, thus disabling all ACPI and the IRQs
14034 for any other device sharing the interrupt. (Thanks to Stian
14037 Toshiba driver update (John Belmonte)
14039 Return only 0 or 1 for our interrupt handler status (Andrew
14045 Fixed a reported problem where multiple (nested) ElseIf()
14046 statements were not handled correctly by the compiler, resulting
14047 in incorrect warnings and incorrect AML code. This was a problem
14048 in both the ASL parser and the code generator.
14053 Added changes to existing interfaces, new exception codes, and new
14054 text concerning reference count object management versus garbage
14057 ----------------------------------------
14058 09 May 2003. Summary of changes for version 20030509.
14061 1) ACPI CA Core Subsystem:
14063 Changed the subsystem initialization sequence to hold off
14064 installation of address space handlers until the hardware has been
14065 initialized and the system has entered ACPI mode. This is because
14066 the installation of space handlers can cause _REG methods to be
14067 run. Previously, the _REG methods could potentially be run before
14068 ACPI mode was enabled.
14070 Fixed some memory leak issues related to address space handler and
14071 notify handler installation. There were some problems with the
14072 reference count mechanism caused by the fact that the handler
14073 objects are shared across several namespace objects.
14075 Fixed a reported problem where reference counts within the
14076 namespace were not properly updated when named objects created by
14077 method execution were deleted.
14079 Fixed a reported problem where multiple SSDTs caused a deletion
14080 issue during subsystem termination. Restructured the table data
14081 structures to simplify the linked lists and the related code.
14083 Fixed a problem where the table ID associated with secondary
14084 tables (SSDTs) was not being propagated into the namespace objects
14085 created by those tables. This would only present a problem for
14086 tables that are unloaded at run-time, however.
14088 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
14089 type as the length parameter (instead of UINT32).
14091 Solved a long-standing problem where an ALREADY_EXISTS error
14092 appears on various systems. This problem could happen when there
14093 are multiple PCI_Config operation regions under a single PCI root
14094 bus. This doesn't happen very frequently, but there are some
14095 systems that do this in the ASL.
14097 Fixed a reported problem where the internal DeleteNode function
14098 was incorrectly handling the case where a namespace node was the
14099 first in the parent's child list, and had additional peers (not
14100 the only child, but first in the list of children.)
14102 Code and Data Size: Current core subsystem library sizes are shown
14103 below. These are the code and data sizes for the acpica.lib
14104 produced by the Microsoft Visual C++ 6.0 compiler, and these
14105 values do not include any ACPI driver or OSPM code. The debug
14106 version of the code includes the debug output trace mechanism and
14107 has a much larger code and data size. Note that these values will
14108 vary depending on the efficiency of the compiler and the compiler
14109 options used during generation.
14112 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14113 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14115 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14116 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14121 Allow ":" in OS override string (Ducrot Bruno)
14123 Kobject fix (Greg KH)
14126 3 iASL Compiler/Disassembler:
14128 Fixed a problem in the generation of the C source code files (AML
14129 is emitted in C source statements for BIOS inclusion) where the
14130 Ascii dump that appears within a C comment at the end of each line
14131 could cause a compile time error if the AML sequence happens to
14132 have an open comment or close comment sequence embedded.
14135 ----------------------------------------
14136 24 April 2003. Summary of changes for version 20030424.
14139 1) ACPI CA Core Subsystem:
14141 Support for big-endian systems has been implemented. Most of the
14142 support has been invisibly added behind big-endian versions of the
14143 ACPI_MOVE_* macros.
14145 Fixed a problem in AcpiHwDisableGpeBlock() and
14146 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
14147 low level hardware write routine. The offset parameter was
14148 actually eliminated from the low level read/write routines because
14149 they had become obsolete.
14151 Fixed a problem where a handler object was deleted twice during
14152 the removal of a fixed event handler.
14157 A fix for SMP systems with link devices was contributed by
14161 (2.5) Return whether we handled the interrupt in our IRQ handler.
14162 (Linux ISRs no longer return void, so we can propagate the handler
14163 return value from the ACPI CA core back to the OS.)
14169 The ACPI CA Programmer Reference has been updated to reflect new
14170 interfaces and changes to existing interfaces.
14172 ----------------------------------------
14173 28 March 2003. Summary of changes for version 20030328.
14175 1) ACPI CA Core Subsystem:
14177 The GPE Block Device support has been completed. New interfaces
14178 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
14179 interfaces (enable, disable, clear, getstatus) have been split
14180 into separate interfaces for Fixed Events and General Purpose
14181 Events (GPEs) in order to support GPE Block Devices properly.
14183 Fixed a problem where the error message "Failed to acquire
14184 semaphore" would appear during operations on the embedded
14187 Code and Data Size: Current core subsystem library sizes are shown
14188 below. These are the code and data sizes for the acpica.lib
14189 produced by the Microsoft Visual C++ 6.0 compiler, and these
14190 values do not include any ACPI driver or OSPM code. The debug
14191 version of the code includes the debug output trace mechanism and
14192 has a much larger code and data size. Note that these values will
14193 vary depending on the efficiency of the compiler and the compiler
14194 options used during generation.
14197 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14198 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14200 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14201 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14204 ----------------------------------------
14205 28 February 2003. Summary of changes for version 20030228.
14208 1) ACPI CA Core Subsystem:
14210 The GPE handling and dispatch code has been completely overhauled
14211 in preparation for support of GPE Block Devices (ID ACPI0006).
14212 This affects internal data structures and code only; there should
14213 be no differences visible externally. One new file has been
14216 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
14217 fields that are used to determine the GPE block lengths. The
14218 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
14219 structures are ignored. This is per the ACPI specification but it
14220 isn't very clear. The full 256 Block 0/1 GPEs are now supported
14221 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
14223 In the SCI interrupt handler, removed the read of the PM1_CONTROL
14224 register to look at the SCI_EN bit. On some machines, this read
14225 causes an SMI event and greatly slows down SCI events. (This may
14226 in fact be the cause of slow battery status response on some
14229 Fixed a problem where a store of a NULL string to a package object
14230 could cause the premature deletion of the object. This was seen
14231 during execution of the battery _BIF method on some systems,
14232 resulting in no battery data being returned.
14234 Added AcpiWalkResources interface to simplify parsing of resource
14237 Code and Data Size: Current core subsystem library sizes are shown
14238 below. These are the code and data sizes for the acpica.lib
14239 produced by the Microsoft Visual C++ 6.0 compiler, and these
14240 values do not include any ACPI driver or OSPM code. The debug
14241 version of the code includes the debug output trace mechanism and
14242 has a much larger code and data size. Note that these values will
14243 vary depending on the efficiency of the compiler and the compiler
14244 options used during generation.
14247 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14248 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14250 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14251 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14256 S3 fixes (Ole Rohne)
14258 Update ACPI PHP driver with to use new acpi_walk_resource API
14261 Add S4BIOS support (Pavel Machek)
14263 Map in entire table before performing checksum (John Stultz)
14265 Expand the mem= cmdline to allow the specification of reserved and
14266 ACPI DATA blocks (Pavel Machek)
14268 Never use ACPI on VISWS
14270 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
14272 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
14273 causing us to think that some systems support C2 when they really
14276 Do not count processor objects for non-present CPUs (Thanks to
14282 Fixed a problem where ASL include files could not be found and
14285 Added support for the _PDC reserved name.
14288 ----------------------------------------
14289 22 January 2003. Summary of changes for version 20030122.
14292 1) ACPI CA Core Subsystem:
14294 Added a check for constructs of the form: Store (Local0, Local0)
14295 where Local0 is not initialized. Apparently, some BIOS
14296 programmers believe that this is a NOOP. Since this store doesn't
14297 do anything anyway, the new prototype behavior will ignore this
14298 error. This is a case where we can relax the strict checking in
14299 the interpreter in the name of compatibility.
14304 The AcpiSrc Source Conversion Utility has been released with the
14305 Linux package for the first time. This is the utility that is
14306 used to convert the ACPI CA base source code to the Linux version.
14308 (Both) Handle P_BLK lengths shorter than 6 more gracefully
14310 (Both) Move more headers to include/acpi, and delete an unused
14313 (Both) Move drivers/acpi/include directory to include/acpi
14315 (Both) Boot functions don't use cmdline, so don't pass it around
14317 (Both) Remove include of unused header (Adrian Bunk)
14319 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
14321 former now also includes the latter, acpiphp.h only needs the one,
14324 (2.5) Make it possible to select method of bios restoring after S3
14325 resume. [=> no more ugly ifdefs] (Pavel Machek)
14327 (2.5) Make proc write interfaces work (Pavel Machek)
14329 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
14331 (2.5) Break out ACPI Perf code into its own module, under cpufreq
14332 (Dominik Brodowski)
14334 (2.4) S4BIOS support (Ducrot Bruno)
14336 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
14342 Added support to disassemble SSDT and PSDTs.
14344 Implemented support to obtain SSDTs from the Windows registry if
14348 ----------------------------------------
14349 09 January 2003. Summary of changes for version 20030109.
14351 1) ACPI CA Core Subsystem:
14353 Changed the behavior of the internal Buffer-to-String conversion
14354 function. The current ACPI specification states that the contents
14355 of the buffer are "converted to a string of two-character
14356 hexadecimal numbers, each separated by a space". Unfortunately,
14357 this definition is not backwards compatible with existing ACPI 1.0
14358 implementations (although the behavior was not defined in the ACPI
14359 1.0 specification). The new behavior simply copies data from the
14360 buffer to the string until a null character is found or the end of
14361 the buffer is reached. The new String object is always null
14362 terminated. This problem was seen during the generation of _BIF
14363 battery data where incorrect strings were returned for battery
14364 type, etc. This will also require an errata to the ACPI
14367 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14368 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14370 Copyright in all module headers (both Linux and non-Linux) has be
14373 Code and Data Size: Current core subsystem library sizes are shown
14374 below. These are the code and data sizes for the acpica.lib
14375 produced by the Microsoft Visual C++ 6.0 compiler, and these
14376 values do not include any ACPI driver or OSPM code. The debug
14377 version of the code includes the debug output trace mechanism and
14378 has a much larger code and data size. Note that these values will
14379 vary depending on the efficiency of the compiler and the compiler
14380 options used during generation.
14383 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14384 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14386 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14387 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14392 Fixed an oops on module insertion/removal (Matthew Tippett)
14394 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14396 (2.5) Replace pr_debug (Randy Dunlap)
14398 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14400 (Both) Eliminate spawning of thread from timer callback, in favor
14403 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14405 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14407 (Both) Add missing statics to button.c (Pavel Machek)
14409 Several changes have been made to the source code translation
14410 utility that generates the Linux Code in order to make the code
14413 All typedefs on structs and unions have been removed in keeping
14414 with the Linux coding style.
14416 Removed the non-Linux SourceSafe module revision number from each
14419 Completed major overhaul of symbols to be lowercased for linux.
14420 Doubled the number of symbols that are lowercased.
14422 Fixed a problem where identifiers within procedure headers and
14423 within quotes were not fully lower cased (they were left with a
14426 Some C macros whose only purpose is to allow the generation of 16-
14427 bit code are now completely removed in the Linux code, increasing
14428 readability and maintainability.
14430 ----------------------------------------
14432 12 December 2002. Summary of changes for version 20021212.
14435 1) ACPI CA Core Subsystem:
14437 Fixed a problem where the creation of a zero-length AML Buffer
14438 would cause a fault.
14440 Fixed a problem where a Buffer object that pointed to a static AML
14441 buffer (in an ACPI table) could inadvertently be deleted, causing
14444 Fixed a problem where a user buffer (passed in to the external
14445 ACPI CA interfaces) could be overwritten if the buffer was too
14446 small to complete the operation, causing memory corruption.
14448 Fixed a problem in the Buffer-to-String conversion code where a
14449 string of length one was always returned, regardless of the size
14450 of the input Buffer object.
14452 Removed the NATIVE_CHAR data type across the entire source due to
14453 lack of need and lack of consistent use.
14455 Code and Data Size: Current core subsystem library sizes are shown
14456 below. These are the code and data sizes for the acpica.lib
14457 produced by the Microsoft Visual C++ 6.0 compiler, and these
14458 values do not include any ACPI driver or OSPM code. The debug
14459 version of the code includes the debug output trace mechanism and
14460 has a much larger code and data size. Note that these values will
14461 vary depending on the efficiency of the compiler and the compiler
14462 options used during generation.
14465 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14466 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14468 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14469 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14472 ----------------------------------------
14473 05 December 2002. Summary of changes for version 20021205.
14475 1) ACPI CA Core Subsystem:
14477 Fixed a problem where a store to a String or Buffer object could
14478 cause corruption of the DSDT if the object type being stored was
14479 the same as the target object type and the length of the object
14480 being stored was equal to or smaller than the original (existing)
14481 target object. This was seen to cause corruption of battery _BIF
14482 buffers if the _BIF method modified the buffer on the fly.
14484 Fixed a problem where an internal error was generated if a control
14485 method invocation was used in an OperationRegion, Buffer, or
14486 Package declaration. This was caused by the deferred parsing of
14487 the control method and thus the deferred creation of the internal
14488 method object. The solution to this problem was to create the
14489 internal method object at the moment the method is encountered in
14490 the first pass - so that subsequent references to the method will
14491 able to obtain the required parameter count and thus properly
14492 parse the method invocation. This problem presented itself as an
14493 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14495 Fixed a problem where the internal String object copy routine did
14496 not always allocate sufficient memory for the target String object
14497 and caused memory corruption. This problem was seen to cause
14498 "Allocation already present in list!" errors as memory allocation
14501 Implemented a new function for the evaluation of namespace objects
14502 that allows the specification of the allowable return object
14503 types. This simplifies a lot of code that checks for a return
14504 object of one or more specific objects returned from the
14505 evaluation (such as _STA, etc.) This may become and external
14506 function if it would be useful to ACPI-related drivers.
14508 Completed another round of prefixing #defines with "ACPI_" for
14511 Completed additional code restructuring to allow more modular
14512 linking for iASL compiler and AcpiExec. Several files were split
14513 creating new files. New files: nsparse.c dsinit.c evgpe.c
14515 Implemented an abort mechanism to terminate an executing control
14516 method via the AML debugger. This feature is useful for debugging
14517 control methods that depend (wait) for specific hardware
14520 Code and Data Size: Current core subsystem library sizes are shown
14521 below. These are the code and data sizes for the acpica.lib
14522 produced by the Microsoft Visual C++ 6.0 compiler, and these
14523 values do not include any ACPI driver or OSPM code. The debug
14524 version of the code includes the debug output trace mechanism and
14525 has a much larger code and data size. Note that these values will
14526 vary depending on the efficiency of the compiler and the compiler
14527 options used during generation.
14530 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14531 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14533 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14534 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14537 2) iASL Compiler/Disassembler
14539 Fixed a compiler code generation problem for "Interrupt" Resource
14540 Descriptors. If specified in the ASL, the optional "Resource
14541 Source Index" and "Resource Source" fields were not inserted into
14542 the correct location within the AML resource descriptor, creating
14543 an invalid descriptor.
14545 Fixed a disassembler problem for "Interrupt" resource descriptors.
14546 The optional "Resource Source Index" and "Resource Source" fields
14550 ----------------------------------------
14551 22 November 2002. Summary of changes for version 20021122.
14554 1) ACPI CA Core Subsystem:
14556 Fixed a reported problem where an object stored to a Method Local
14557 or Arg was not copied to a new object during the store - the
14558 object pointer was simply copied to the Local/Arg. This caused
14559 all subsequent operations on the Local/Arg to also affect the
14560 original source of the store operation.
14562 Fixed a problem where a store operation to a Method Local or Arg
14563 was not completed properly if the Local/Arg contained a reference
14564 (from RefOf) to a named field. The general-purpose store-to-
14565 namespace-node code is now used so that this case is handled
14568 Fixed a problem where the internal object copy routine would cause
14569 a protection fault if the object being copied was a Package and
14570 contained either 1) a NULL package element or 2) a nested sub-
14573 Fixed a problem with the GPE initialization that resulted from an
14574 ambiguity in the ACPI specification. One section of the
14575 specification states that both the address and length of the GPE
14576 block must be zero if the block is not supported. Another section
14577 implies that only the address need be zero if the block is not
14578 supported. The code has been changed so that both the address and
14579 the length must be non-zero to indicate a valid GPE block (i.e.,
14580 if either the address or the length is zero, the GPE block is
14583 Code and Data Size: Current core subsystem library sizes are shown
14584 below. These are the code and data sizes for the acpica.lib
14585 produced by the Microsoft Visual C++ 6.0 compiler, and these
14586 values do not include any ACPI driver or OSPM code. The debug
14587 version of the code includes the debug output trace mechanism and
14588 has a much larger code and data size. Note that these values will
14589 vary depending on the efficiency of the compiler and the compiler
14590 options used during generation.
14593 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14594 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14596 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14597 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14602 Cleaned up EC driver. Exported an external EC read/write
14603 interface. By going through this, other drivers (most notably
14604 sonypi) will be able to serialize access to the EC.
14607 3) iASL Compiler/Disassembler
14609 Implemented support to optionally generate include files for both
14610 ASM and C (the -i switch). This simplifies BIOS development by
14611 automatically creating include files that contain external
14612 declarations for the symbols that are created within the
14614 (optionally generated) ASM and C AML source files.
14617 ----------------------------------------
14618 15 November 2002. Summary of changes for version 20021115.
14620 1) ACPI CA Core Subsystem:
14622 Fixed a memory leak problem where an error during resolution of
14624 method arguments during a method invocation from another method
14625 failed to cleanup properly by deleting all successfully resolved
14628 Fixed a problem where the target of the Index() operator was not
14629 correctly constructed if the source object was a package. This
14630 problem has not been detected because the use of a target operand
14631 with Index() is very rare.
14633 Fixed a problem with the Index() operator where an attempt was
14634 made to delete the operand objects twice.
14636 Fixed a problem where an attempt was made to delete an operand
14637 twice during execution of the CondRefOf() operator if the target
14640 Implemented the first of perhaps several internal create object
14641 functions that create and initialize a specific object type. This
14642 consolidates duplicated code wherever the object is created, thus
14643 shrinking the size of the subsystem.
14645 Implemented improved debug/error messages for errors that occur
14646 during nested method invocations. All executing method pathnames
14647 are displayed (with the error) as the call stack is unwound - thus
14650 Fixed a problem introduced in the 10/02 release that caused
14651 premature deletion of a buffer object if a buffer was used as an
14652 ASL operand where an integer operand is required (Thus causing an
14653 implicit object conversion from Buffer to Integer.) The change in
14654 the 10/02 release was attempting to fix a memory leak (albeit
14657 Code and Data Size: Current core subsystem library sizes are shown
14658 below. These are the code and data sizes for the acpica.lib
14659 produced by the Microsoft Visual C++ 6.0 compiler, and these
14660 values do not include any ACPI driver or OSPM code. The debug
14661 version of the code includes the debug output trace mechanism and
14662 has a much larger code and data size. Note that these values will
14663 vary depending on the efficiency of the compiler and the compiler
14664 options used during generation.
14667 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14668 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14670 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14671 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14676 Changed the implementation of the ACPI semaphores to use down()
14677 instead of down_interruptable(). It is important that the
14678 execution of ACPI control methods not be interrupted by signals.
14679 Methods must run to completion, or the system may be left in an
14680 unknown/unstable state.
14682 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14686 3) iASL Compiler/Disassembler
14689 Changed the default location of output files. All output files
14690 are now placed in the current directory by default instead of in
14691 the directory of the source file. This change may affect some
14692 existing makefiles, but it brings the behavior of the compiler in
14693 line with other similar tools. The location of the output files
14694 can be overridden with the -p command line switch.
14697 ----------------------------------------
14698 11 November 2002. Summary of changes for version 20021111.
14701 0) ACPI Specification 2.0B is released and is now available at:
14702 http://www.acpi.info/index.html
14705 1) ACPI CA Core Subsystem:
14707 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14708 This includes the early detection and handoff of the request to
14709 the SMBus region handler (avoiding all of the complex field
14710 support code), and support for the bidirectional return packet
14711 from an SMBus write operation. This paves the way for the
14712 development of SMBus drivers in each host operating system.
14714 Fixed a problem where the semaphore WAIT_FOREVER constant was
14715 defined as 32 bits, but must be 16 bits according to the ACPI
14716 specification. This had the side effect of causing ASL
14717 Mutex/Event timeouts even though the ASL code requested a wait
14718 forever. Changed all internal references to the ACPI timeout
14719 parameter to 16 bits to prevent future problems. Changed the name
14720 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14722 Code and Data Size: Current core subsystem library sizes are shown
14723 below. These are the code and data sizes for the acpica.lib
14724 produced by the Microsoft Visual C++ 6.0 compiler, and these
14725 values do not include any ACPI driver or OSPM code. The debug
14726 version of the code includes the debug output trace mechanism and
14727 has a much larger code and data size. Note that these values will
14728 vary depending on the efficiency of the compiler and the compiler
14729 options used during generation.
14732 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14733 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14735 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14736 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14741 Module loading/unloading fixes (John Cagle)
14744 3) iASL Compiler/Disassembler
14746 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14748 Implemented support for the disassembly of all SMBus protocol
14749 keywords (SMBQuick, SMBWord, etc.)
14751 ----------------------------------------
14752 01 November 2002. Summary of changes for version 20021101.
14755 1) ACPI CA Core Subsystem:
14757 Fixed a problem where platforms that have a GPE1 block but no GPE0
14758 block were not handled correctly. This resulted in a "GPE
14759 overlap" error message. GPE0 is no longer required.
14761 Removed code added in the previous release that inserted nodes
14762 into the namespace in alphabetical order. This caused some side-
14763 effects on various machines. The root cause of the problem is
14764 still under investigation since in theory, the internal ordering
14765 of the namespace nodes should not matter.
14768 Enhanced error reporting for the case where a named object is not
14769 found during control method execution. The full ACPI namepath
14770 (name reference) of the object that was not found is displayed in
14773 Note: as a result of the overhaul of the namespace object types in
14774 the previous release, the namespace nodes for the predefined
14775 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14776 instead of ACPI_TYPE_ANY. This simplifies the namespace
14777 management code but may affect code that walks the namespace tree
14778 looking for specific object types.
14780 Code and Data Size: Current core subsystem library sizes are shown
14781 below. These are the code and data sizes for the acpica.lib
14782 produced by the Microsoft Visual C++ 6.0 compiler, and these
14783 values do not include any ACPI driver or OSPM code. The debug
14784 version of the code includes the debug output trace mechanism and
14785 has a much larger code and data size. Note that these values will
14786 vary depending on the efficiency of the compiler and the compiler
14787 options used during generation.
14790 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14791 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14793 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14794 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14799 Fixed a problem introduced in the previous release where the
14800 Processor and Thermal objects were not recognized and installed in
14801 /proc. This was related to the scope type change described above.
14804 3) iASL Compiler/Disassembler
14806 Implemented the -g option to get all of the required ACPI tables
14807 from the registry and save them to files (Windows version of the
14808 compiler only.) The required tables are the FADT, FACS, and DSDT.
14810 Added ACPI table checksum validation during table disassembly in
14811 order to catch corrupted tables.
14814 ----------------------------------------
14815 22 October 2002. Summary of changes for version 20021022.
14817 1) ACPI CA Core Subsystem:
14819 Implemented a restriction on the Scope operator that the target
14820 must already exist in the namespace at the time the operator is
14821 encountered (during table load or method execution). In other
14822 words, forward references are not allowed and Scope() cannot
14823 create a new object. This changes the previous behavior where the
14824 interpreter would create the name if not found. This new behavior
14825 correctly enables the search-to-root algorithm during namespace
14826 lookup of the target name. Because of this upsearch, this fixes
14827 the known Compaq _SB_.OKEC problem and makes both the AML
14828 interpreter and iASL compiler compatible with other ACPI
14831 Completed a major overhaul of the internal ACPI object types for
14832 the ACPI Namespace and the associated operand objects. Many of
14833 these types had become obsolete with the introduction of the two-
14834 pass namespace load. This cleanup simplifies the code and makes
14835 the entire namespace load mechanism much clearer and easier to
14838 Improved debug output for tracking scope opening/closing to help
14839 diagnose scoping issues. The old scope name as well as the new
14840 scope name are displayed. Also improved error messages for
14841 problems with ASL Mutex objects and error messages for GPE
14844 Cleaned up the namespace dump code, removed obsolete code.
14846 All string output (for all namespace/object dumps) now uses the
14847 common ACPI string output procedure which handles escapes properly
14848 and does not emit non-printable characters.
14850 Fixed some issues with constants in the 64-bit version of the
14851 local C library (utclib.c)
14856 EC Driver: No longer attempts to acquire the Global Lock at
14860 3) iASL Compiler/Disassembler
14862 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14863 2 opcodes outside of a control method. This means that the
14864 "executable" operators (versus the "namespace" operators) cannot
14865 be used at the table level; they can only be used within a control
14868 Implemented the restriction on the Scope() operator where the
14869 target must already exist in the namespace at the time the
14870 operator is encountered (during ASL compilation). In other words,
14871 forward references are not allowed and Scope() cannot create a new
14872 object. This makes the iASL compiler compatible with other ACPI
14873 implementations and makes the Scope() implementation adhere to the
14874 ACPI specification.
14876 Fixed a problem where namepath optimization for the Alias operator
14877 was optimizing the wrong path (of the two namepaths.) This caused
14878 a "Missing alias link" error message.
14880 Fixed a problem where an "unknown reserved name" warning could be
14881 incorrectly generated for names like "_SB" when the trailing
14882 underscore is not used in the original ASL.
14884 Fixed a problem where the reserved name check did not handle
14885 NamePaths with multiple NameSegs correctly. The first nameseg of
14886 the NamePath was examined instead of the last NameSeg.
14889 ----------------------------------------
14891 02 October 2002. Summary of changes for this release.
14894 1) ACPI CA Core Subsystem version 20021002:
14896 Fixed a problem where a store/copy of a string to an existing
14897 string did not always set the string length properly in the String
14900 Fixed a reported problem with the ToString operator where the
14901 behavior was identical to the ToHexString operator instead of just
14902 simply converting a raw buffer to a string data type.
14904 Fixed a problem where CopyObject and the other "explicit"
14905 conversion operators were not updating the internal namespace node
14906 type as part of the store operation.
14908 Fixed a memory leak during implicit source operand conversion
14909 where the original object was not deleted if it was converted to a
14910 new object of a different type.
14912 Enhanced error messages for all problems associated with namespace
14913 lookups. Common procedure generates and prints the lookup name as
14914 well as the formatted status.
14916 Completed implementation of a new design for the Alias support
14917 within the namespace. The existing design did not handle the case
14918 where a new object was assigned to one of the two names due to the
14919 use of an explicit conversion operator, resulting in the two names
14920 pointing to two different objects. The new design simply points
14921 the Alias name to the original name node - not to the object.
14922 This results in a level of indirection that must be handled in the
14923 name resolution mechanism.
14925 Code and Data Size: Current core subsystem library sizes are shown
14926 below. These are the code and data sizes for the acpica.lib
14927 produced by the Microsoft Visual C++ 6.0 compiler, and these
14928 values do not include any ACPI driver or OSPM code. The debug
14929 version of the code includes the debug output trace mechanism and
14930 has a larger code and data size. Note that these values will vary
14931 depending on the efficiency of the compiler and the compiler
14932 options used during generation.
14935 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14936 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14938 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14939 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14944 Initialize thermal driver's timer before it is used. (Knut
14947 Allow handling negative celsius values. (Kochi Takayoshi)
14949 Fix thermal management and make trip points. R/W (Pavel Machek)
14951 Fix /proc/acpi/sleep. (P. Christeas)
14953 IA64 fixes. (David Mosberger)
14955 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14957 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14961 3) iASL Compiler/Disassembler
14963 Clarified some warning/error messages.
14966 ----------------------------------------
14967 18 September 2002. Summary of changes for this release.
14970 1) ACPI CA Core Subsystem version 20020918:
14972 Fixed a reported problem with reference chaining (via the Index()
14973 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14974 The definition of these operators includes the dereferencing of
14975 all chained references to return information on the base object.
14977 Fixed a problem with stores to indexed package elements - the
14978 existing code would not complete the store if an "implicit
14979 conversion" was not performed. In other words, if the existing
14980 object (package element) was to be replaced completely, the code
14981 didn't handle this case.
14983 Relaxed typechecking on the ASL "Scope" operator to allow the
14984 target name to refer to an object of type Integer, String, or
14985 Buffer, in addition to the scoping object types (Device,
14986 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14987 This allows existing AML code that has workarounds for a bug in
14988 Windows to function properly. A warning is issued, however. This
14989 affects both the AML interpreter and the iASL compiler. Below is
14990 an example of this type of ASL code:
14996 Fixed some reported problems with 64-bit integer support in the
14997 local implementation of C library functions (clib.c)
15002 Use ACPI fix map region instead of IOAPIC region, since it is
15003 undefined in non-SMP.
15005 Ensure that the SCI has the proper polarity and trigger, even on
15006 systems that do not have an interrupt override entry in the MADT.
15008 2.5 big driver reorganization (Pat Mochel)
15010 Use early table mapping code from acpitable.c (Andi Kleen)
15012 New blacklist entries (Andi Kleen)
15014 Blacklist improvements. Split blacklist code out into a separate
15015 file. Move checking the blacklist to very early. Previously, we
15016 would use ACPI tables, and then halfway through init, check the
15017 blacklist -- too late. Now, it's early enough to completely fall-
15021 3) iASL Compiler/Disassembler version 20020918:
15023 Fixed a problem where the typechecking code didn't know that an
15024 alias could point to a method. In other words, aliases were not
15025 being dereferenced during typechecking.
15028 ----------------------------------------
15029 29 August 2002. Summary of changes for this release.
15031 1) ACPI CA Core Subsystem Version 20020829:
15033 If the target of a Scope() operator already exists, it must be an
15034 object type that actually opens a scope -- such as a Device,
15035 Method, Scope, etc. This is a fatal runtime error. Similar error
15036 check has been added to the iASL compiler also.
15038 Tightened up the namespace load to disallow multiple names in the
15039 same scope. This previously was allowed if both objects were of
15040 the same type. (i.e., a lookup was the same as entering a new
15046 Ensure that the ACPI interrupt has the proper trigger and
15049 local_irq_disable is extraneous. (Matthew Wilcox)
15051 Make "acpi=off" actually do what it says, and not use the ACPI
15052 interpreter *or* the tables.
15054 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
15058 3) iASL Compiler/Disassembler Version 20020829:
15060 Implemented namepath optimization for name declarations. For
15061 example, a declaration like "Method (\_SB_.ABCD)" would get
15062 optimized to "Method (ABCD)" if the declaration is within the
15063 \_SB_ scope. This optimization is in addition to the named
15064 reference path optimization first released in the previous
15065 version. This would seem to complete all possible optimizations
15066 for namepaths within the ASL/AML.
15068 If the target of a Scope() operator already exists, it must be an
15069 object type that actually opens a scope -- such as a Device,
15070 Method, Scope, etc.
15072 Implemented a check and warning for unreachable code in the same
15073 block below a Return() statement.
15075 Fixed a problem where the listing file was not generated if the
15076 compiler aborted if the maximum error count was exceeded (200).
15078 Fixed a problem where the typechecking of method return values was
15079 broken. This includes the check for a return value when the
15080 method is invoked as a TermArg (a return value is expected.)
15082 Fixed a reported problem where EOF conditions during a quoted
15083 string or comment caused a fault.
15086 ----------------------------------------
15087 15 August 2002. Summary of changes for this release.
15089 1) ACPI CA Core Subsystem Version 20020815:
15091 Fixed a reported problem where a Store to a method argument that
15092 contains a reference did not perform the indirect store correctly.
15093 This problem was created during the conversion to the new
15094 reference object model - the indirect store to a method argument
15095 code was not updated to reflect the new model.
15097 Reworked the ACPI mode change code to better conform to ACPI 2.0,
15098 handle corner cases, and improve code legibility (Kochi Takayoshi)
15100 Fixed a problem with the pathname parsing for the carat (^)
15101 prefix. The heavy use of the carat operator by the new namepath
15102 optimization in the iASL compiler uncovered a problem with the AML
15103 interpreter handling of this prefix. In the case where one or
15104 more carats precede a single nameseg, the nameseg was treated as
15105 standalone and the search rule (to root) was inadvertently
15106 applied. This could cause both the iASL compiler and the
15107 interpreter to find the wrong object or to miss the error that
15108 should occur if the object does not exist at that exact pathname.
15110 Found and fixed the problem where the HP Pavilion DSDT would not
15111 load. This was a relatively minor tweak to the table loading code
15112 (a problem caused by the unexpected encounter with a method
15113 invocation not within a control method), but it does not solve the
15114 overall issue of the execution of AML code at the table level.
15115 This investigation is still ongoing.
15117 Code and Data Size: Current core subsystem library sizes are shown
15118 below. These are the code and data sizes for the acpica.lib
15119 produced by the Microsoft Visual C++ 6.0 compiler, and these
15120 values do not include any ACPI driver or OSPM code. The debug
15121 version of the code includes the debug output trace mechanism and
15122 has a larger code and data size. Note that these values will vary
15123 depending on the efficiency of the compiler and the compiler
15124 options used during generation.
15127 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15128 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15130 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15131 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15136 Remove redundant slab.h include (Brad Hards)
15138 Fix several bugs in thermal.c (Herbert Nachtnebel)
15140 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
15142 Change acpi_system_suspend to use updated irq functions (Pavel
15145 Export acpi_get_firmware_table (Matthew Wilcox)
15147 Use proper root proc entry for ACPI (Kochi Takayoshi)
15149 Fix early-boot table parsing (Bjorn Helgaas)
15152 3) iASL Compiler/Disassembler
15154 Reworked the compiler options to make them more consistent and to
15155 use two-letter options where appropriate. We were running out of
15156 sensible letters. This may break some makefiles, so check the
15157 current options list by invoking the compiler with no parameters.
15159 Completed the design and implementation of the ASL namepath
15160 optimization option for the compiler. This option optimizes all
15161 references to named objects to the shortest possible path. The
15162 first attempt tries to utilize a single nameseg (4 characters) and
15163 the "search-to-root" algorithm used by the interpreter. If that
15164 cannot be used (because either the name is not in the search path
15165 or there is a conflict with another object with the same name),
15166 the pathname is optimized using the carat prefix (usually a
15167 shorter string than specifying the entire path from the root.)
15169 Implemented support to obtain the DSDT from the Windows registry
15170 (when the disassembly option is specified with no input file).
15171 Added this code as the implementation for AcpiOsTableOverride in
15172 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
15173 utility) to scan memory for the DSDT to the AcpiOsTableOverride
15174 function in the DOS OSL to make the disassembler truly OS
15177 Implemented a new option to disassemble and compile in one step.
15178 When used without an input filename, this option will grab the
15179 DSDT from the local machine, disassemble it, and compile it in one
15182 Added a warning message for invalid escapes (a backslash followed
15183 by any character other than the allowable escapes). This catches
15184 the quoted string error "\_SB_" (which should be "\\_SB_" ).
15186 Also, there are numerous instances in the ACPI specification where
15189 Added a compiler option to disable all optimizations. This is
15190 basically the "compatibility mode" because by using this option,
15191 the AML code will come out exactly the same as other ASL
15194 Added error messages for incorrectly ordered dependent resource
15195 functions. This includes: missing EndDependentFn macro at end of
15196 dependent resource list, nested dependent function macros (both
15197 start and end), and missing StartDependentFn macro. These are
15198 common errors that should be caught at compile time.
15200 Implemented _OSI support for the disassembler and compiler. _OSI
15201 must be included in the namespace for proper disassembly (because
15202 the disassembler must know the number of arguments.)
15204 Added an "optimization" message type that is optional (off by
15205 default). This message is used for all optimizations - including
15206 constant folding, integer optimization, and namepath optimization.
15208 ----------------------------------------
15209 25 July 2002. Summary of changes for this release.
15212 1) ACPI CA Core Subsystem Version 20020725:
15214 The AML Disassembler has been enhanced to produce compilable ASL
15215 code and has been integrated into the iASL compiler (see below) as
15216 well as the single-step disassembly for the AML debugger and the
15217 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
15218 resource templates and macros are fully supported. The
15219 disassembler has been tested on over 30 different AML files,
15220 producing identical AML when the resulting disassembled ASL file
15221 is recompiled with the same ASL compiler.
15223 Modified the Resource Manager to allow zero interrupts and zero
15224 dma channels during the GetCurrentResources call. This was
15225 causing problems on some platforms.
15227 Added the AcpiOsRedirectOutput interface to the OSL to simplify
15228 output redirection for the AcpiOsPrintf and AcpiOsVprintf
15231 Code and Data Size: Current core subsystem library sizes are shown
15232 below. These are the code and data sizes for the acpica.lib
15233 produced by the Microsoft Visual C++ 6.0 compiler, and these
15234 values do not include any ACPI driver or OSPM code. The debug
15235 version of the code includes the debug output trace mechanism and
15236 has a larger code and data size. Note that these values will vary
15237 depending on the efficiency of the compiler and the compiler
15238 options used during generation.
15241 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15242 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15244 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15245 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15250 Fixed a panic in the EC driver (Dominik Brodowski)
15252 Implemented checksum of the R/XSDT itself during Linux table scan
15258 The AML disassembler is integrated into the compiler. The "-d"
15259 option invokes the disassembler to completely disassemble an
15260 input AML file, producing as output a text ASL file with the
15261 extension ".dsl" (to avoid name collisions with existing .asl
15262 source files.) A future enhancement will allow the disassembler
15263 to obtain the BIOS DSDT from the registry under Windows.
15265 Fixed a problem with the VendorShort and VendorLong resource
15266 descriptors where an invalid AML sequence was created.
15268 Implemented a fix for BufferData term in the ASL parser. It was
15269 inadvertently defined twice, allowing invalid syntax to pass and
15270 causing reduction conflicts.
15272 Fixed a problem where the Ones opcode could get converted to a
15273 value of zero if "Ones" was used where a byte, word or dword value
15274 was expected. The 64-bit value is now truncated to the correct
15275 size with the correct value.
15279 ----------------------------------------
15280 02 July 2002. Summary of changes for this release.
15283 1) ACPI CA Core Subsystem Version 20020702:
15285 The Table Manager code has been restructured to add several new
15286 features. Tables that are not required by the core subsystem
15287 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
15288 validated in any way and are returned from AcpiGetFirmwareTable if
15289 requested. The AcpiOsTableOverride interface is now called for
15290 each table that is loaded by the subsystem in order to allow the
15291 host to override any table it chooses. Previously, only the DSDT
15292 could be overridden. Added one new files, tbrsdt.c and
15295 Fixed a problem with the conversion of internal package objects to
15296 external objects (when a package is returned from a control
15297 method.) The return buffer length was set to zero instead of the
15298 proper length of the package object.
15300 Fixed a reported problem with the use of the RefOf and DeRefOf
15301 operators when passing reference arguments to control methods. A
15302 new type of Reference object is used internally for references
15303 produced by the RefOf operator.
15305 Added additional error messages in the Resource Manager to explain
15306 AE_BAD_DATA errors when they occur during resource parsing.
15308 Split the AcpiEnableSubsystem into two primitives to enable a
15309 finer granularity initialization sequence. These two calls should
15310 be called in this order: AcpiEnableSubsystem (flags),
15311 AcpiInitializeObjects (flags). The flags parameter remains the
15317 Updated the ACPI utilities module to understand the new style of
15318 fully resolved package objects that are now returned from the core
15319 subsystem. This eliminates errors of the form:
15321 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
15322 acpi_utils-0430 [145] acpi_evaluate_reference:
15323 Invalid element in package (not a device reference)
15325 The method evaluation utility uses the new buffer allocation
15326 scheme instead of calling AcpiEvaluate Object twice.
15328 Added support for ECDT. This allows the use of the Embedded
15330 Controller before the namespace has been fully initialized, which
15331 is necessary for ACPI 2.0 support, and for some laptops to
15332 initialize properly. (Laptops using ECDT are still rare, so only
15333 limited testing was performed of the added functionality.)
15335 Fixed memory leaks in the EC driver.
15337 Eliminated a brittle code structure in acpi_bus_init().
15339 Eliminated the acpi_evaluate() helper function in utils.c. It is
15340 no longer needed since acpi_evaluate_object can optionally
15341 allocate memory for the return object.
15343 Implemented fix for keyboard hang when getting battery readings on
15344 some systems (Stephen White)
15346 PCI IRQ routing update (Dominik Brodowski)
15348 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15351 ----------------------------------------
15352 11 June 2002. Summary of changes for this release.
15355 1) ACPI CA Core Subsystem Version 20020611:
15357 Fixed a reported problem where constants such as Zero and One
15358 appearing within _PRT packages were not handled correctly within
15359 the resource manager code. Originally reported against the ASL
15360 compiler because the code generator now optimizes integers to
15361 their minimal AML representation (i.e. AML constants if possible.)
15362 The _PRT code now handles all AML constant opcodes correctly
15363 (Zero, One, Ones, Revision).
15365 Fixed a problem with the Concatenate operator in the AML
15366 interpreter where a buffer result object was incorrectly marked as
15367 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15369 All package sub-objects are now fully resolved before they are
15370 returned from the external ACPI interfaces. This means that name
15371 strings are resolved to object handles, and constant operators
15372 (Zero, One, Ones, Revision) are resolved to Integers.
15374 Implemented immediate resolution of the AML Constant opcodes
15375 (Zero, One, Ones, Revision) to Integer objects upon detection
15376 within the AML stream. This has simplified and reduced the
15377 generated code size of the subsystem by eliminating about 10
15378 switch statements for these constants (which previously were
15379 contained in Reference objects.) The complicating issues are that
15380 the Zero opcode is used as a "placeholder" for unspecified
15381 optional target operands and stores to constants are defined to be
15384 Code and Data Size: Current core subsystem library sizes are shown
15385 below. These are the code and data sizes for the acpica.lib
15386 produced by the Microsoft Visual C++ 6.0 compiler, and these
15387 values do not include any ACPI driver or OSPM code. The debug
15388 version of the code includes the debug output trace mechanism and
15389 has a larger code and data size. Note that these values will vary
15390 depending on the efficiency of the compiler and the compiler
15391 options used during generation.
15394 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15395 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15397 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15398 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15404 Added preliminary support for obtaining _TRA data for PCI root
15405 bridges (Bjorn Helgaas).
15408 3) iASL Compiler Version X2046:
15410 Fixed a problem where the "_DDN" reserved name was defined to be a
15411 control method with one argument. There are no arguments, and
15412 _DDN does not have to be a control method.
15414 Fixed a problem with the Linux version of the compiler where the
15415 source lines printed with error messages were the wrong lines.
15416 This turned out to be the "LF versus CR/LF" difference between
15417 Windows and Unix. This appears to be the longstanding issue
15418 concerning listing output and error messages.
15420 Fixed a problem with the Linux version of compiler where opcode
15421 names within error messages were wrong. This was caused by a
15422 slight difference in the output of the Flex tool on Linux versus
15425 Fixed a problem with the Linux compiler where the hex output files
15426 contained some garbage data caused by an internal buffer overrun.
15429 ----------------------------------------
15430 17 May 2002. Summary of changes for this release.
15433 1) ACPI CA Core Subsystem Version 20020517:
15435 Implemented a workaround to an BIOS bug discovered on the HP
15436 OmniBook where the FADT revision number and the table size are
15437 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15438 behavior is to fallback to using only the ACPI 1.0 fields of the
15439 FADT if the table is too small to be a ACPI 2.0 table as claimed
15440 by the revision number. Although this is a BIOS bug, this is a
15441 case where the workaround is simple enough and with no side
15442 effects, so it seemed prudent to add it. A warning message is
15445 Implemented minimum size checks for the fixed-length ACPI tables -
15446 - the FADT and FACS, as well as consistency checks between the
15447 revision number and the table size.
15449 Fixed a reported problem in the table override support where the
15450 new table pointer was incorrectly treated as a physical address
15451 instead of a logical address.
15453 Eliminated the use of the AE_AML_ERROR exception and replaced it
15454 with more descriptive codes.
15456 Fixed a problem where an exception would occur if an ASL Field was
15457 defined with no named Field Units underneath it (used by some
15460 Code and Data Size: Current core subsystem library sizes are shown
15461 below. These are the code and data sizes for the acpica.lib
15462 produced by the Microsoft Visual C++ 6.0 compiler, and these
15463 values do not include any ACPI driver or OSPM code. The debug
15464 version of the code includes the debug output trace mechanism and
15465 has a larger code and data size. Note that these values will vary
15466 depending on the efficiency of the compiler and the compiler
15467 options used during generation.
15470 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15471 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15473 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15474 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15480 Much work done on ACPI init (MADT and PCI IRQ routing support).
15481 (Paul D. and Dominik Brodowski)
15483 Fix PCI IRQ-related panic on boot (Sam Revitch)
15485 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15487 Fix "MHz" typo (Dominik Brodowski)
15489 Fix RTC year 2000 issue (Dominik Brodowski)
15491 Preclude multiple button proc entries (Eric Brunet)
15493 Moved arch-specific code out of include/platform/aclinux.h
15495 3) iASL Compiler Version X2044:
15497 Implemented error checking for the string used in the EISAID macro
15498 (Usually used in the definition of the _HID object.) The code now
15499 strictly enforces the PnP format - exactly 7 characters, 3
15500 uppercase letters and 4 hex digits.
15502 If a raw string is used in the definition of the _HID object
15503 (instead of the EISAID macro), the string must contain all
15504 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15507 Implemented checking for invalid use of ACPI reserved names for
15508 most of the name creation operators (Name, Device, Event, Mutex,
15509 OperationRegion, PowerResource, Processor, and ThermalZone.)
15510 Previously, this check was only performed for control methods.
15512 Implemented an additional check on the Name operator to emit an
15513 error if a reserved name that must be implemented in ASL as a
15514 control method is used. We know that a reserved name must be a
15515 method if it is defined with input arguments.
15517 The warning emitted when a namespace object reference is not found
15518 during the cross reference phase has been changed into an error.
15519 The "External" directive should be used for names defined in other
15523 4) Tools and Utilities
15525 The 16-bit tools (adump16 and aexec16) have been regenerated and
15528 Fixed a problem with the output of both acpidump and adump16 where
15529 the indentation of closing parentheses and brackets was not
15531 aligned properly with the parent block.
15534 ----------------------------------------
15535 03 May 2002. Summary of changes for this release.
15538 1) ACPI CA Core Subsystem Version 20020503:
15540 Added support a new OSL interface that allows the host operating
15542 system software to override the DSDT found in the firmware -
15543 AcpiOsTableOverride. With this interface, the OSL can examine the
15544 version of the firmware DSDT and replace it with a different one
15547 Added new external interfaces for accessing ACPI registers from
15548 device drivers and other system software - AcpiGetRegister and
15549 AcpiSetRegister. This was simply an externalization of the
15550 existing AcpiHwBitRegister interfaces.
15552 Fixed a regression introduced in the previous build where the
15553 ASL/AML CreateField operator always returned an error,
15554 "destination must be a NS Node".
15556 Extended the maximum time (before failure) to successfully enable
15557 ACPI mode to 3 seconds.
15559 Code and Data Size: Current core subsystem library sizes are shown
15560 below. These are the code and data sizes for the acpica.lib
15561 produced by the Microsoft Visual C++ 6.0 compiler, and these
15562 values do not include any ACPI driver or OSPM code. The debug
15563 version of the code includes the debug output trace mechanism and
15564 has a larger code and data size. Note that these values will vary
15565 depending on the efficiency of the compiler and the compiler
15566 options used during generation.
15569 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15570 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15572 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15573 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15578 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15579 free. While 3 out of 4 of our in-house systems work fine, the last
15580 one still hangs when testing the LAPIC timer.
15582 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15585 Added warning on boot for Presario 711FR.
15587 Sleep improvements (Pavel Machek)
15589 ACPI can now be built without CONFIG_PCI enabled.
15591 IA64: Fixed memory map functions (JI Lee)
15594 3) iASL Compiler Version X2043:
15596 Added support to allow the compiler to be integrated into the MS
15597 VC++ development environment for one-button compilation of single
15598 files or entire projects -- with error-to-source-line mapping.
15600 Implemented support for compile-time constant folding for the
15601 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15602 specification. This allows the ASL writer to use expressions
15603 instead of Integer/Buffer/String constants in terms that must
15604 evaluate to constants at compile time and will also simplify the
15605 emitted AML in any such sub-expressions that can be folded
15606 (evaluated at compile-time.) This increases the size of the
15607 compiler significantly because a portion of the ACPI CA AML
15608 interpreter is included within the compiler in order to pre-
15609 evaluate constant expressions.
15612 Fixed a problem with the "Unicode" ASL macro that caused the
15613 compiler to fault. (This macro is used in conjunction with the
15614 _STR reserved name.)
15616 Implemented an AML opcode optimization to use the Zero, One, and
15617 Ones opcodes where possible to further reduce the size of integer
15618 constants and thus reduce the overall size of the generated AML
15621 Implemented error checking for new reserved terms for ACPI version
15624 Implemented the -qr option to display the current list of ACPI
15625 reserved names known to the compiler.
15627 Implemented the -qc option to display the current list of ASL
15628 operators that are allowed within constant expressions and can
15629 therefore be folded at compile time if the operands are constants.
15634 Updated the Programmer's Reference for new interfaces, data types,
15635 and memory allocation model options.
15637 Updated the iASL Compiler User Reference to apply new format and
15638 add information about new features and options.
15640 ----------------------------------------
15641 19 April 2002. Summary of changes for this release.
15643 1) ACPI CA Core Subsystem Version 20020419:
15645 The source code base for the Core Subsystem has been completely
15646 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15647 versions. The Lint option files used are included in the
15648 /acpi/generate/lint directory.
15650 Implemented enhanced status/error checking across the entire
15651 Hardware manager subsystem. Any hardware errors (reported from
15652 the OSL) are now bubbled up and will abort a running control
15656 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15657 was stored only with control method nodes, causing a fault when
15658 non-control method code was executed during table loading. The
15659 solution implemented uses a global variable to indicate table
15660 width across the entire ACPI subsystem. Therefore, ACPI CA does
15661 not support mixed integer widths across different ACPI tables
15664 Fixed a problem where NULL extended fields (X fields) in an ACPI
15665 2.0 ACPI FADT caused the table load to fail. Although the
15666 existing ACPI specification is a bit fuzzy on this topic, the new
15667 behavior is to fall back on a ACPI 1.0 field if the corresponding
15668 ACPI 2.0 X field is zero (even though the table revision indicates
15669 a full ACPI 2.0 table.) The ACPI specification will be updated to
15670 clarify this issue.
15672 Fixed a problem with the SystemMemory operation region handler
15673 where memory was always accessed byte-wise even if the AML-
15674 specified access width was larger than a byte. This caused
15675 problems on systems with memory-mapped I/O. Memory is now
15676 accessed with the width specified. On systems that do not support
15677 non-aligned transfers, a check is made to guarantee proper address
15678 alignment before proceeding in order to avoid an AML-caused
15679 alignment fault within the kernel.
15682 Fixed a problem with the ExtendedIrq resource where only one byte
15683 of the 4-byte Irq field was extracted.
15685 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15686 function was out of date and required a rewrite.
15688 Code and Data Size: Current core subsystem library sizes are shown
15689 below. These are the code and data sizes for the acpica.lib
15690 produced by the Microsoft Visual C++ 6.0 compiler, and these
15691 values do not include any ACPI driver or OSPM code. The debug
15692 version of the code includes the debug output trace mechanism and
15693 has a larger code and data size. Note that these values will vary
15694 depending on the efficiency of the compiler and the compiler
15695 options used during generation.
15698 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15699 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15701 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15702 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15707 PCI IRQ routing fixes (Dominik Brodowski)
15710 3) iASL Compiler Version X2042:
15712 Implemented an additional compile-time error check for a field
15713 unit whose size + minimum access width would cause a run-time
15714 access beyond the end-of-region. Previously, only the field size
15715 itself was checked.
15717 The Core subsystem and iASL compiler now share a common parse
15718 object in preparation for compile-time evaluation of the type
15719 3/4/5 ASL operators.
15722 ----------------------------------------
15723 Summary of changes for this release: 03_29_02
15725 1) ACPI CA Core Subsystem Version 20020329:
15727 Implemented support for late evaluation of TermArg operands to
15728 Buffer and Package objects. This allows complex expressions to be
15729 used in the declarations of these object types.
15731 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15732 1.0, if the field was larger than 32 bits, it was returned as a
15733 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15734 the field is returned as a buffer only if the field is larger than
15735 64 bits. The TableRevision is now considered when making this
15736 conversion to avoid incompatibility with existing ASL code.
15738 Implemented logical addressing for AcpiOsGetRootPointer. This
15739 allows an RSDP with either a logical or physical address. With
15740 this support, the host OS can now override all ACPI tables with
15741 one logical RSDP. Includes implementation of "typed" pointer
15742 support to allow a common data type for both physical and logical
15743 pointers internally. This required a change to the
15744 AcpiOsGetRootPointer interface.
15746 Implemented the use of ACPI 2.0 Generic Address Structures for all
15747 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15748 mapped I/O for these ACPI features.
15750 Initialization now ignores not only non-required tables (All
15751 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15752 not validate the table headers of unrecognized tables.
15754 Fixed a problem where a notify handler could only be
15755 installed/removed on an object of type Device. All "notify"
15757 objects are now supported -- Devices, Processor, Power, and
15760 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15761 critical information is returned when this debug level is enabled.
15763 Code and Data Size: Current core subsystem library sizes are shown
15764 below. These are the code and data sizes for the acpica.lib
15765 produced by the Microsoft Visual C++ 6.0 compiler, and these
15766 values do not include any ACPI driver or OSPM code. The debug
15767 version of the code includes the debug output trace mechanism and
15768 has a larger code and data size. Note that these values will vary
15769 depending on the efficiency of the compiler and the compiler
15770 options used during generation.
15773 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15774 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15776 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15777 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15782 The processor driver (acpi_processor.c) now fully supports ACPI
15783 2.0-based processor performance control (e.g. Intel(R)
15784 SpeedStep(TM) technology) Note that older laptops that only have
15785 the Intel "applet" interface are not supported through this. The
15786 'limit' and 'performance' interface (/proc) are fully functional.
15787 [Note that basic policy for controlling performance state
15788 transitions will be included in the next version of ospmd.] The
15789 idle handler was modified to more aggressively use C2, and PIIX4
15790 errata handling underwent a complete overhaul (big thanks to
15791 Dominik Brodowski).
15793 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15794 based devices in the ACPI namespace are now dynamically bound
15795 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15796 This allows, among other things, ACPI to resolve bus numbers for
15797 subordinate PCI bridges.
15799 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15800 entries defined underneath PCI bridges.
15802 Added IBM 600E to bad bios list due to invalid _ADR value for
15803 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15805 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15806 (acpi.c, mpparse.c) -- stay tuned.
15808 Added back visual differentiation between fixed-feature and
15809 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15810 button/power/PWRF) to simplify button identification.
15812 We no longer use -Wno-unused when compiling debug. Please ignore
15813 any "_THIS_MODULE defined but not used" messages.
15815 Can now shut down the system using "magic sysrq" key.
15818 3) iASL Compiler version 2041:
15820 Fixed a problem where conversion errors for hex/octal/decimal
15821 constants were not reported.
15823 Implemented a fix for the General Register template Address field.
15824 This field was 8 bits when it should be 64.
15826 Fixed a problem where errors/warnings were no longer being emitted
15827 within the listing output file.
15829 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15830 exactly 4 characters, alphanumeric only.
15835 ----------------------------------------
15836 Summary of changes for this release: 03_08_02
15839 1) ACPI CA Core Subsystem Version 20020308:
15841 Fixed a problem with AML Fields where the use of the "AccessAny"
15842 keyword could cause an interpreter error due to attempting to read
15843 or write beyond the end of the parent Operation Region.
15845 Fixed a problem in the SystemMemory Operation Region handler where
15846 an attempt was made to map memory beyond the end of the region.
15847 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15848 errors on some Linux systems.
15850 Fixed a problem where the interpreter/namespace "search to root"
15851 algorithm was not functioning for some object types. Relaxed the
15852 internal restriction on the search to allow upsearches for all
15853 external object types as well as most internal types.
15858 We now use safe_halt() macro versus individual calls to sti | hlt.
15860 Writing to the processor limit interface should now work. "echo 1"
15861 will increase the limit, 2 will decrease, and 0 will reset to the
15868 Fixed segfault on Linux version.
15871 ----------------------------------------
15872 Summary of changes for this release: 02_25_02
15874 1) ACPI CA Core Subsystem:
15877 Fixed a problem where the GPE bit masks were not initialized
15878 properly, causing erratic GPE behavior.
15880 Implemented limited support for multiple calling conventions. The
15881 code can be generated with either the VPL (variable parameter
15882 list, or "C") convention, or the FPL (fixed parameter list, or
15883 "Pascal") convention. The core subsystem is about 3.4% smaller
15884 when generated with FPL.
15889 Re-add some /proc/acpi/event functionality that was lost during
15892 Resolved issue with /proc events for fixed-feature buttons showing
15893 up as the system device.
15895 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15897 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15899 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15901 Fixed limit interface & usage to fix bugs with passive cooling
15904 Restructured PRT support.
15907 ----------------------------------------
15908 Summary of changes for this label: 02_14_02
15911 1) ACPI CA Core Subsystem:
15913 Implemented support in AcpiLoadTable to allow loading of FACS and
15916 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15917 been removed. All 64-bit platforms should be migrated to the ACPI
15918 2.0 tables. The actbl71.h header has been removed from the source
15921 All C macros defined within the subsystem have been prefixed with
15922 "ACPI_" to avoid collision with other system include files.
15924 Removed the return value for the two AcpiOsPrint interfaces, since
15925 it is never used and causes lint warnings for ignoring the return
15928 Added error checking to all internal mutex acquire and release
15929 calls. Although a failure from one of these interfaces is
15930 probably a fatal system error, these checks will cause the
15931 immediate abort of the currently executing method or interface.
15933 Fixed a problem where the AcpiSetCurrentResources interface could
15934 fault. This was a side effect of the deployment of the new memory
15937 Fixed a couple of problems with the Global Lock support introduced
15938 in the last major build. The "common" (1.0/2.0) internal FACS was
15939 being overwritten with the FACS signature and clobbering the
15940 Global Lock pointer. Also, the actual firmware FACS was being
15941 unmapped after construction of the "common" FACS, preventing
15942 access to the actual Global Lock field within it. The "common"
15943 internal FACS is no longer installed as an actual ACPI table; it
15944 is used simply as a global.
15946 Code and Data Size: Current core subsystem library sizes are shown
15947 below. These are the code and data sizes for the acpica.lib
15948 produced by the Microsoft Visual C++ 6.0 compiler, and these
15949 values do not include any ACPI driver or OSPM code. The debug
15950 version of the code includes the debug output trace mechanism and
15951 has a larger code and data size. Note that these values will vary
15952 depending on the efficiency of the compiler and the compiler
15953 options used during generation.
15955 Previous Release (02_07_01)
15956 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15957 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15959 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15960 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15965 Updated Linux-specific code for core macro and OSL interface
15966 changes described above.
15968 Improved /proc/acpi/event. It now can be opened only once and has
15969 proper poll functionality.
15971 Fixed and restructured power management (acpi_bus).
15973 Only create /proc "view by type" when devices of that class exist.
15975 Fixed "charging/discharging" bug (and others) in acpi_battery.
15977 Improved thermal zone code.
15980 3) ASL Compiler, version X2039:
15983 Implemented the new compiler restriction on ASL String hex/octal
15984 escapes to non-null, ASCII values. An error results if an invalid
15985 value is used. (This will require an ACPI 2.0 specification
15988 AML object labels that are output to the optional C and ASM source
15989 are now prefixed with both the ACPI table signature and table ID
15990 to help guarantee uniqueness within a large BIOS project.
15993 ----------------------------------------
15994 Summary of changes for this label: 02_01_02
15996 1) ACPI CA Core Subsystem:
15998 ACPI 2.0 support is complete in the entire Core Subsystem and the
15999 ASL compiler. All new ACPI 2.0 operators are implemented and all
16000 other changes for ACPI 2.0 support are complete. With
16001 simultaneous code and data optimizations throughout the subsystem,
16002 ACPI 2.0 support has been implemented with almost no additional
16003 cost in terms of code and data size.
16005 Implemented a new mechanism for allocation of return buffers. If
16006 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
16007 be allocated on behalf of the caller. Consolidated all return
16008 buffer validation and allocation to a common procedure. Return
16009 buffers will be allocated via the primary OSL allocation interface
16010 since it appears that a separate pool is not needed by most users.
16011 If a separate pool is required for these buffers, the caller can
16012 still use the original mechanism and pre-allocate the buffer(s).
16014 Implemented support for string operands within the DerefOf
16017 Restructured the Hardware and Event managers to be table driven,
16018 simplifying the source code and reducing the amount of generated
16021 Split the common read/write low-level ACPI register bitfield
16022 procedure into a separate read and write, simplifying the code
16025 Obsoleted the AcpiOsCallocate OSL interface. This interface was
16026 used only a handful of times and didn't have enough critical mass
16027 for a separate interface. Replaced with a common calloc procedure
16030 Fixed a reported problem with the GPE number mapping mechanism
16031 that allows GPE1 numbers to be non-contiguous with GPE0.
16032 Reorganized the GPE information and shrunk a large array that was
16033 originally large enough to hold info for all possible GPEs (256)
16034 to simply large enough to hold all GPEs up to the largest GPE
16035 number on the machine.
16037 Fixed a reported problem with resource structure alignment on 64-
16040 Changed the AcpiEnableEvent and AcpiDisableEvent external
16041 interfaces to not require any flags for the common case of
16042 enabling/disabling a GPE.
16044 Implemented support to allow a "Notify" on a Processor object.
16046 Most TBDs in comments within the source code have been resolved
16050 Fixed a problem in the interpreter where a standalone parent
16051 prefix (^) was not handled correctly in the interpreter and
16054 Removed obsolete and unnecessary GPE save/restore code.
16056 Implemented Field support in the ASL Load operator. This allows a
16057 table to be loaded from a named field, in addition to loading a
16058 table directly from an Operation Region.
16060 Implemented timeout and handle support in the external Global Lock
16063 Fixed a problem in the AcpiDump utility where pathnames were no
16064 longer being generated correctly during the dump of named objects.
16066 Modified the AML debugger to give a full display of if/while
16067 predicates instead of just one AML opcode at a time. (The
16068 predicate can have several nested ASL statements.) The old method
16069 was confusing during single stepping.
16071 Code and Data Size: Current core subsystem library sizes are shown
16072 below. These are the code and data sizes for the acpica.lib
16073 produced by the Microsoft Visual C++ 6.0 compiler, and these
16074 values do not include any ACPI driver or OSPM code. The debug
16075 version of the code includes the debug output trace mechanism and
16076 has a larger code and data size. Note that these values will vary
16077 depending on the efficiency of the compiler and the compiler
16078 options used during generation.
16080 Previous Release (12_18_01)
16081 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16082 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16084 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16085 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16089 Implemented fix for PIIX reverse throttling errata (Processor
16092 Added new Limit interface (Processor and Thermal drivers)
16094 New thermal policy (Thermal driver)
16096 Many updates to /proc
16098 Battery "low" event support (Battery driver)
16100 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
16102 IA32 - IA64 initialization unification, no longer experimental
16104 Menuconfig options redesigned
16106 3) ASL Compiler, version X2037:
16108 Implemented several new output features to simplify integration of
16109 AML code into firmware: 1) Output the AML in C source code with
16110 labels for each named ASL object. The original ASL source code
16111 is interleaved as C comments. 2) Output the AML in ASM source code
16112 with labels and interleaved ASL source. 3) Output the AML in
16113 raw hex table form, in either C or ASM.
16115 Implemented support for optional string parameters to the
16116 LoadTable operator.
16118 Completed support for embedded escape sequences within string
16119 literals. The compiler now supports all single character escapes
16120 as well as the Octal and Hex escapes. Note: the insertion of a
16121 null byte into a string literal (via the hex/octal escape) causes
16122 the string to be immediately terminated. A warning is issued.
16124 Fixed a problem where incorrect AML was generated for the case
16125 where an ASL namepath consists of a single parent prefix (
16127 ) with no trailing name segments.
16129 The compiler has been successfully generated with a 64-bit C
16135 ----------------------------------------
16136 Summary of changes for this label: 12_18_01
16140 Enhanced blacklist with reason and severity fields. Any table's
16141 signature may now be used to identify a blacklisted system.
16143 Call _PIC control method to inform the firmware which interrupt
16144 model the OS is using. Turn on any disabled link devices.
16146 Cleaned up busmgr /proc error handling (Andreas Dilger)
16148 2) ACPI CA Core Subsystem:
16150 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
16153 Completed implementation of the ACPI 2.0 "Continue",
16154 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
16155 operators. All new ACPI 2.0 operators are now implemented in both
16156 the ASL compiler and the AML interpreter. The only remaining ACPI
16157 2.0 task is support for the String data type in the DerefOf
16158 operator. Fixed a problem with AcquireMutex where the status code
16159 was lost if the caller had to actually wait for the mutex.
16161 Increased the maximum ASL Field size from 64K bits to 4G bits.
16163 Completed implementation of the external Global Lock interfaces --
16164 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
16165 Handler parameters were added.
16167 Completed another pass at removing warnings and issues when
16168 compiling with 64-bit compilers. The code now compiles cleanly
16169 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
16170 add and subtract (diff) macros have changed considerably.
16173 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
16174 64-bit platforms, 32-bits on all others. This type is used
16175 wherever memory allocation and/or the C sizeof() operator is used,
16176 and affects the OSL memory allocation interfaces AcpiOsAllocate
16177 and AcpiOsCallocate.
16179 Implemented sticky user breakpoints in the AML debugger.
16181 Code and Data Size: Current core subsystem library sizes are shown
16182 below. These are the code and data sizes for the acpica.lib
16183 produced by the Microsoft Visual C++ 6.0 compiler, and these
16184 values do not include any ACPI driver or OSPM code. The debug
16185 version of the code includes the debug output trace mechanism and
16186 has a larger code and data size. Note that these values will vary
16187 depending on the efficiency of the compiler and the compiler
16188 options used during generation.
16190 Previous Release (12_05_01)
16191 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16192 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16194 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16195 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16197 3) ASL Compiler, version X2034:
16199 Now checks for (and generates an error if detected) the use of a
16200 Break or Continue statement without an enclosing While statement.
16203 Successfully generated the compiler with the Intel 64-bit C
16206 ----------------------------------------
16207 Summary of changes for this label: 12_05_01
16209 1) ACPI CA Core Subsystem:
16211 The ACPI 2.0 CopyObject operator is fully implemented. This
16212 operator creates a new copy of an object (and is also used to
16213 bypass the "implicit conversion" mechanism of the Store operator.)
16215 The ACPI 2.0 semantics for the SizeOf operator are fully
16216 implemented. The change is that performing a SizeOf on a
16217 reference object causes an automatic dereference of the object to
16218 tha actual value before the size is evaluated. This behavior was
16219 undefined in ACPI 1.0.
16221 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
16222 have been implemented. The interrupt polarity and mode are now
16225 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
16226 appearing in Package objects were not properly converted to
16227 integers when the internal Package was converted to an external
16228 object (via the AcpiEvaluateObject interface.)
16230 Fixed a problem with the namespace object deletion mechanism for
16231 objects created by control methods. There were two parts to this
16232 problem: 1) Objects created during the initialization phase method
16233 parse were not being deleted, and 2) The object owner ID mechanism
16234 to track objects was broken.
16236 Fixed a problem where the use of the ASL Scope operator within a
16237 control method would result in an invalid opcode exception.
16239 Fixed a problem introduced in the previous label where the buffer
16240 length required for the _PRT structure was not being returned
16243 Code and Data Size: Current core subsystem library sizes are shown
16244 below. These are the code and data sizes for the acpica.lib
16245 produced by the Microsoft Visual C++ 6.0 compiler, and these
16246 values do not include any ACPI driver or OSPM code. The debug
16247 version of the code includes the debug output trace mechanism and
16248 has a larger code and data size. Note that these values will vary
16249 depending on the efficiency of the compiler and the compiler
16250 options used during generation.
16252 Previous Release (11_20_01)
16253 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16254 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16257 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16258 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16262 Updated all files to apply cleanly against 2.4.16.
16264 Added basic PCI Interrupt Routing Table (PRT) support for IA32
16265 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
16266 version supports both static and dyanmic PRT entries, but dynamic
16267 entries are treated as if they were static (not yet
16268 reconfigurable). Architecture- specific code to use this data is
16269 absent on IA32 but should be available shortly.
16271 Changed the initialization sequence to start the ACPI interpreter
16272 (acpi_init) prior to initialization of the PCI driver (pci_init)
16273 in init/main.c. This ordering is required to support PRT and
16274 facilitate other (future) enhancement. A side effect is that the
16275 ACPI bus driver and certain device drivers can no longer be loaded
16278 Modified the 'make menuconfig' options to allow PCI Interrupt
16279 Routing support to be included without the ACPI Bus and other
16282 3) ASL Compiler, version X2033:
16284 Fixed some issues with the use of the new CopyObject and
16285 DataTableRegion operators. Both are fully functional.
16287 ----------------------------------------
16288 Summary of changes for this label: 11_20_01
16290 20 November 2001. Summary of changes for this release.
16292 1) ACPI CA Core Subsystem:
16294 Updated Index support to match ACPI 2.0 semantics. Storing a
16295 Integer, String, or Buffer to an Index of a Buffer will store only
16296 the least-significant byte of the source to the Indexed buffer
16297 byte. Multiple writes are not performed.
16299 Fixed a problem where the access type used in an AccessAs ASL
16300 operator was not recorded correctly into the field object.
16302 Fixed a problem where ASL Event objects were created in a
16303 signalled state. Events are now created in an unsignalled state.
16305 The internal object cache is now purged after table loading and
16306 initialization to reduce the use of dynamic kernel memory -- on
16307 the assumption that object use is greatest during the parse phase
16308 of the entire table (versus the run-time use of individual control
16311 ACPI 2.0 variable-length packages are now fully operational.
16313 Code and Data Size: Code and Data optimizations have permitted new
16314 feature development with an actual reduction in the library size.
16315 Current core subsystem library sizes are shown below. These are
16316 the code and data sizes for the acpica.lib produced by the
16317 Microsoft Visual C++ 6.0 compiler, and these values do not include
16318 any ACPI driver or OSPM code. The debug version of the code
16319 includes the debug output trace mechanism and has a larger code
16320 and data size. Note that these values will vary depending on the
16321 efficiency of the compiler and the compiler options used during
16324 Previous Release (11_09_01):
16325 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16326 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16329 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16330 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16334 Enhanced the ACPI boot-time initialization code to allow the use
16335 of Local APIC tables for processor enumeration on IA-32, and to
16336 pave the way for a fully MPS-free boot (on SMP systems) in the
16337 near future. This functionality replaces
16338 arch/i386/kernel/acpitables.c, which was introduced in an earlier
16339 2.4.15-preX release. To enable this feature you must add
16340 "acpi_boot=on" to the kernel command line -- see the help entry
16341 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16344 Restructured the configuration options to allow boot-time table
16345 parsing support without inclusion of the ACPI Interpreter (and
16348 NOTE: This release does not include fixes for the reported events,
16349 power-down, and thermal passive cooling issues (coming soon).
16353 Added additional typechecking for Fields within restricted access
16354 Operation Regions. All fields within EC and CMOS regions must be
16355 declared with ByteAcc. All fields withing SMBus regions must be
16356 declared with the BufferAcc access type.
16358 Fixed a problem where the listing file output of control methods
16359 no longer interleaved the actual AML code with the ASL source
16365 ----------------------------------------
16366 Summary of changes for this label: 11_09_01
16368 1) ACPI CA Core Subsystem:
16370 Implemented ACPI 2.0-defined support for writes to fields with a
16371 Buffer, String, or Integer source operand that is smaller than the
16372 target field. In these cases, the source operand is zero-extended
16373 to fill the target field.
16375 Fixed a problem where a Field starting bit offset (within the
16376 parent operation region) was calculated incorrectly if the
16378 alignment of the field differed from the access width. This
16379 affected CreateWordField, CreateDwordField, CreateQwordField, and
16380 possibly other fields that use the "AccessAny" keyword.
16382 Fixed a problem introduced in the 11_02_01 release where indirect
16383 stores through method arguments did not operate correctly.
16387 Implemented boot-time ACPI table parsing support
16388 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16389 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16390 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16391 processors, memory, and interrupts during setup_arch(). Note that
16392 this patch does not include the required architecture-specific
16393 changes required to apply this information -- subsequent patches
16394 will be posted for both IA32 and IA64 to achieve this.
16396 Added low-level sleep support for IA32 platforms, courtesy of Pat
16397 Mochel. This allows IA32 systems to transition to/from various
16398 sleeping states (e.g. S1, S3), although the lack of a centralized
16399 driver model and power-manageable drivers will prevent its
16400 (successful) use on most systems.
16402 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16403 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16404 tables" option, etc.
16406 Increased the default timeout for the EC driver from 1ms to 10ms
16407 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16410 ----------------------------------------
16411 Summary of changes for this label: 11_02_01
16413 1) ACPI CA Core Subsystem:
16415 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16416 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16419 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16420 changes to support ACPI 2.0 Qword field access. Read/Write
16421 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16422 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16423 the value parameter for the address space handler interface is now
16424 an ACPI_INTEGER. OSL implementations of these interfaces must now
16425 handle the case where the Width parameter is 64.
16427 Index Fields: Fixed a problem where unaligned bit assembly and
16428 disassembly for IndexFields was not supported correctly.
16430 Index and Bank Fields: Nested Index and Bank Fields are now
16431 supported. During field access, a check is performed to ensure
16432 that the value written to an Index or Bank register is not out of
16433 the range of the register. The Index (or Bank) register is
16434 written before each access to the field data. Future support will
16435 include allowing individual IndexFields to be wider than the
16436 DataRegister width.
16438 Fields: Fixed a problem where the AML interpreter was incorrectly
16439 attempting to write beyond the end of a Field/OpRegion. This was
16440 a boundary case that occurred when a DWORD field was written to a
16441 BYTE access OpRegion, forcing multiple writes and causing the
16442 interpreter to write one datum too many.
16444 Fields: Fixed a problem with Field/OpRegion access where the
16445 starting bit address of a field was incorrectly calculated if the
16446 current access type was wider than a byte (WordAcc, DwordAcc, or
16449 Fields: Fixed a problem where forward references to individual
16450 FieldUnits (individual Field names within a Field definition) were
16451 not resolved during the AML table load.
16453 Fields: Fixed a problem where forward references from a Field
16454 definition to the parent Operation Region definition were not
16455 resolved during the AML table load.
16457 Fields: Duplicate FieldUnit names within a scope are now detected
16458 during AML table load.
16460 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16461 returned an incorrect name for the root node.
16463 Code and Data Size: Code and Data optimizations have permitted new
16464 feature development with an actual reduction in the library size.
16465 Current core subsystem library sizes are shown below. These are
16466 the code and data sizes for the acpica.lib produced by the
16467 Microsoft Visual C++ 6.0 compiler, and these values do not include
16468 any ACPI driver or OSPM code. The debug version of the code
16469 includes the debug output trace mechanism and has a larger code
16470 and data size. Note that these values will vary depending on the
16471 efficiency of the compiler and the compiler options used during
16474 Previous Release (10_18_01):
16475 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16476 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16479 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16480 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16484 Improved /proc processor output (Pavel Machek) Re-added
16485 MODULE_LICENSE("GPL") to all modules.
16487 3) ASL Compiler version X2030:
16489 Duplicate FieldUnit names within a scope are now detected and
16494 Programmer Reference updated to reflect OSL and address space
16495 handler interface changes described above.
16497 ----------------------------------------
16498 Summary of changes for this label: 10_18_01
16500 ACPI CA Core Subsystem:
16502 Fixed a problem with the internal object reference count mechanism
16503 that occasionally caused premature object deletion. This resolves
16504 all of the outstanding problem reports where an object is deleted
16505 in the middle of an interpreter evaluation. Although this problem
16506 only showed up in rather obscure cases, the solution to the
16507 problem involved an adjustment of all reference counts involving
16508 objects attached to namespace nodes.
16510 Fixed a problem with Field support in the interpreter where
16511 writing to an aligned field whose length is an exact multiple (2
16512 or greater) of the field access granularity would cause an attempt
16513 to write beyond the end of the field.
16515 The top level AML opcode execution functions within the
16516 interpreter have been renamed with a more meaningful and
16517 consistent naming convention. The modules exmonad.c and
16518 exdyadic.c were eliminated. New modules are exoparg1.c,
16519 exoparg2.c, exoparg3.c, and exoparg6.c.
16521 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16523 Fixed a problem where the AML debugger was causing some internal
16524 objects to not be deleted during subsystem termination.
16526 Fixed a problem with the external AcpiEvaluateObject interface
16527 where the subsystem would fault if the named object to be
16528 evaluated refered to a constant such as Zero, Ones, etc.
16530 Fixed a problem with IndexFields and BankFields where the
16531 subsystem would fault if the index, data, or bank registers were
16532 not defined in the same scope as the field itself.
16534 Added printf format string checking for compilers that support
16535 this feature. Corrected more than 50 instances of issues with
16536 format specifiers within invocations of ACPI_DEBUG_PRINT
16537 throughout the core subsystem code.
16539 The ASL "Revision" operator now returns the ACPI support level
16540 implemented in the core - the value "2" since the ACPI 2.0 support
16541 is more than 50% implemented.
16543 Enhanced the output of the AML debugger "dump namespace" command
16544 to output in a more human-readable form.
16546 Current core subsystem library code sizes are shown below. These
16548 are the code and data sizes for the acpica.lib produced by the
16549 Microsoft Visual C++ 6.0 compiler, and these values do not include
16550 any ACPI driver or OSPM code. The debug version of the code
16551 includes the full debug trace mechanism -- leading to a much
16553 larger code and data size. Note that these values will vary
16554 depending on the efficiency of the compiler and the compiler
16555 options used during generation.
16557 Previous Label (09_20_01):
16558 Non-Debug Version: 65K Code, 5K Data, 70K Total
16559 Debug Version: 138K Code, 58K Data, 196K Total
16563 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16564 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16568 Implemented a "Bad BIOS Blacklist" to track machines that have
16569 known ASL/AML problems.
16571 Enhanced the /proc interface for the thermal zone driver and added
16572 support for _HOT (the critical suspend trip point). The 'info'
16573 file now includes threshold/policy information, and allows setting
16574 of _SCP (cooling preference) and _TZP (polling frequency) values
16575 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16576 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16577 preference to the passive/quiet mode (if supported by the ASL).
16579 Implemented a workaround for a gcc bug that resuted in an OOPs
16580 when loading the control method battery driver.
16582 ----------------------------------------
16583 Summary of changes for this label: 09_20_01
16585 ACPI CA Core Subsystem:
16587 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16588 modified to allow individual GPE levels to be flagged as wake-
16589 enabled (i.e., these GPEs are to remain enabled when the platform
16592 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16593 support wake-enabled GPEs. This means that upon entering the
16594 sleep state, all GPEs that are not wake-enabled are disabled.
16595 When leaving the sleep state, these GPEs are reenabled.
16597 A local double-precision divide/modulo module has been added to
16598 enhance portability to OS kernels where a 64-bit math library is
16599 not available. The new module is "utmath.c".
16601 Several optimizations have been made to reduce the use of CPU
16602 stack. Originally over 2K, the maximum stack usage is now below
16603 2K at 1860 bytes (1.82k)
16605 Fixed a problem with the AcpiGetFirmwareTable interface where the
16606 root table pointer was not mapped into a logical address properly.
16608 Fixed a problem where a NULL pointer was being dereferenced in the
16609 interpreter code for the ASL Notify operator.
16611 Fixed a problem where the use of the ASL Revision operator
16612 returned an error. This operator now returns the current version
16613 of the ACPI CA core subsystem.
16615 Fixed a problem where objects passed as control method parameters
16616 to AcpiEvaluateObject were always deleted at method termination.
16617 However, these objects may end up being stored into the namespace
16618 by the called method. The object reference count mechanism was
16619 applied to these objects instead of a force delete.
16621 Fixed a problem where static strings or buffers (contained in the
16622 AML code) that are declared as package elements within the ASL
16623 code could cause a fault because the interpreter would attempt to
16624 delete them. These objects are now marked with the "static
16625 object" flag to prevent any attempt to delete them.
16627 Implemented an interpreter optimization to use operands directly
16628 from the state object instead of extracting the operands to local
16629 variables. This reduces stack use and code size, and improves
16632 The module exxface.c was eliminated as it was an unnecessary extra
16635 Current core subsystem library code sizes are shown below. These
16636 are the code and data sizes for the acpica.lib produced by the
16637 Microsoft Visual C++ 6.0 compiler, and these values do not include
16638 any ACPI driver or OSPM code. The debug version of the code
16639 includes the full debug trace mechanism -- leading to a much
16640 larger code and data size. Note that these values will vary
16641 depending on the efficiency of the compiler and the compiler
16642 options used during generation.
16644 Non-Debug Version: 65K Code, 5K Data, 70K Total
16645 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16646 Total (Previously 195K)
16650 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16651 Integer objects are now 64 bits wide
16653 All Acpi data types and structures are now in lower case. Only
16654 Acpi macros are upper case for differentiation.
16658 Changes to the external interfaces as described above.
16660 ----------------------------------------
16661 Summary of changes for this label: 08_31_01
16663 ACPI CA Core Subsystem:
16665 A bug with interpreter implementation of the ASL Divide operator
16666 was found and fixed. The implicit function return value (not the
16667 explicit store operands) was returning the remainder instead of
16668 the quotient. This was a longstanding bug and it fixes several
16669 known outstanding issues on various platforms.
16671 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16672 been further optimized for size. There are 700 invocations of the
16673 DEBUG_PRINT macro alone, so each optimization reduces the size of
16674 the debug version of the subsystem significantly.
16676 A stack trace mechanism has been implemented. The maximum stack
16677 usage is about 2K on 32-bit platforms. The debugger command "stat
16678 stack" will display the current maximum stack usage.
16680 All public symbols and global variables within the subsystem are
16681 now prefixed with the string "Acpi". This keeps all of the
16682 symbols grouped together in a kernel map, and avoids conflicts
16683 with other kernel subsystems.
16685 Most of the internal fixed lookup tables have been moved into the
16686 code segment via the const operator.
16688 Several enhancements have been made to the interpreter to both
16689 reduce the code size and improve performance.
16691 Current core subsystem library code sizes are shown below. These
16692 are the code and data sizes for the acpica.lib produced by the
16693 Microsoft Visual C++ 6.0 compiler, and these values do not include
16694 any ACPI driver or OSPM code. The debug version of the code
16695 includes the full debug trace mechanism which contains over 700
16696 invocations of the DEBUG_PRINT macro, 500 function entry macro
16697 invocations, and over 900 function exit macro invocations --
16698 leading to a much larger code and data size. Note that these
16699 values will vary depending on the efficiency of the compiler and
16700 the compiler options used during generation.
16702 Non-Debug Version: 64K Code, 5K Data, 69K Total
16703 Debug Version: 137K Code, 58K Data, 195K Total
16707 Implemented wbinvd() macro, pending a kernel-wide definition.
16709 Fixed /proc/acpi/event to handle poll() and short reads.
16711 ASL Compiler, version X2026:
16713 Fixed a problem introduced in the previous label where the AML
16715 code emitted for package objects produced packages with zero
16718 ----------------------------------------
16719 Summary of changes for this label: 08_16_01
16721 ACPI CA Core Subsystem:
16723 The following ACPI 2.0 ASL operators have been implemented in the
16724 AML interpreter (These are already supported by the Intel ASL
16725 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16726 ToBuffer. Support for 64-bit AML constants is implemented in the
16727 AML parser, debugger, and disassembler.
16729 The internal memory tracking mechanism (leak detection code) has
16730 been upgraded to reduce the memory overhead (a separate tracking
16731 block is no longer allocated for each memory allocation), and now
16732 supports all of the internal object caches.
16734 The data structures and code for the internal object caches have
16735 been coelesced and optimized so that there is a single cache and
16736 memory list data structure and a single group of functions that
16737 implement generic cache management. This has reduced the code
16738 size in both the debug and release versions of the subsystem.
16740 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16741 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16742 different, because it generates a single call to an internal
16743 function. This results in a savings of about 90 bytes per
16744 invocation, resulting in an overall code and data savings of about
16745 16% in the debug version of the subsystem.
16749 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16752 Integrated low-level sleep code by Patrick Mochel.
16754 Further tweaked source code Linuxization.
16760 Support for ACPI 2.0 variable length packages is fixed/completed.
16762 Fixed a problem where the optional length parameter for the ACPI
16763 2.0 ToString operator.
16765 Fixed multiple extraneous error messages when a syntax error is
16766 detected within the declaration line of a control method.
16768 ----------------------------------------
16769 Summary of changes for this label: 07_17_01
16771 ACPI CA Core Subsystem:
16773 Added a new interface named AcpiGetFirmwareTable to obtain any
16774 ACPI table via the ACPI signature. The interface can be called at
16775 any time during kernel initialization, even before the kernel
16776 virtual memory manager is initialized and paging is enabled. This
16777 allows kernel subsystems to obtain ACPI tables very early, even
16778 before the ACPI CA subsystem is initialized.
16780 Fixed a problem where Fields defined with the AnyAcc attribute
16781 could be resolved to the incorrect address under the following
16782 conditions: 1) the field width is larger than 8 bits and 2) the
16783 parent operation region is not defined on a DWORD boundary.
16785 Fixed a problem where the interpreter is not being locked during
16786 namespace initialization (during execution of the _INI control
16787 methods), causing an error when an attempt is made to release it
16790 ACPI 2.0 support in the AML Interpreter has begun and will be
16791 ongoing throughout the rest of this year. In this label, The Mod
16792 operator is implemented.
16794 Added a new data type to contain full PCI addresses named
16795 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16796 and Function values.
16800 Enhanced the Linux version of the source code to change most
16801 capitalized ACPI type names to lowercase. For example, all
16802 instances of ACPI_STATUS are changed to acpi_status. This will
16803 result in a large diff, but the change is strictly cosmetic and
16804 aligns the CA code closer to the Linux coding standard.
16808 The interfaces to the PCI configuration space have been changed to
16809 add the PCI Segment number and to split the single 32-bit combined
16810 DeviceFunction field into two 16-bit fields. This was
16811 accomplished by moving the four values that define an address in
16812 PCI configuration space (segment, bus, device, and function) to
16813 the new ACPI_PCI_ID structure.
16815 The changes to the PCI configuration space interfaces led to a
16816 reexamination of the complete set of address space access
16817 interfaces for PCI, I/O, and Memory. The previously existing 18
16818 interfaces have proven difficult to maintain (any small change
16819 must be propagated across at least 6 interfaces) and do not easily
16820 allow for future expansion to 64 bits if necessary. Also, on some
16821 systems, it would not be appropriate to demultiplex the access
16822 width (8, 16, 32,or 64) before calling the OSL if the
16823 corresponding native OS interfaces contain a similar access width
16824 parameter. For these reasons, the 18 address space interfaces
16825 have been replaced by these 6 new ones:
16827 AcpiOsReadPciConfiguration
16828 AcpiOsWritePciConfiguration
16834 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16835 to perform the platform and/or OS-specific actions necessary to
16836 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16837 interface will simply call down to the CA core to perform the low-
16838 memory search for the table. On IA-64, the RSDP is obtained from
16839 EFI. Migrating this interface to the OSL allows the CA core to
16841 remain OS and platform independent.
16843 Added a new interface named AcpiOsSignal to provide a generic
16844 "function code and pointer" interface for various miscellaneous
16845 signals and notifications that must be made to the host OS. The
16846 first such signals are intended to support the ASL Fatal and
16847 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16848 interface has been obsoleted.
16850 The definition of the AcpiFormatException interface has been
16851 changed to simplify its use. The caller no longer must supply a
16852 buffer to the call; A pointer to a const string is now returned
16853 directly. This allows the call to be easily used in printf
16854 statements, etc. since the caller does not have to manage a local
16858 ASL Compiler, Version X2025:
16860 The ACPI 2.0 Switch/Case/Default operators have been implemented
16861 and are fully functional. They will work with all ACPI 1.0
16862 interpreters, since the operators are simply translated to If/Else
16865 The ACPI 2.0 ElseIf operator is implemented and will also work
16866 with 1.0 interpreters, for the same reason.
16868 Implemented support for ACPI 2.0 variable-length packages. These
16869 packages have a separate opcode, and their size is determined by
16870 the interpreter at run-time.
16872 Documentation The ACPI CA Programmer Reference has been updated to
16873 reflect the new interfaces and changes to existing interfaces.
16875 ------------------------------------------
16876 Summary of changes for this label: 06_15_01
16878 ACPI CA Core Subsystem:
16880 Fixed a problem where a DWORD-accessed field within a Buffer
16881 object would get its byte address inadvertently rounded down to
16882 the nearest DWORD. Buffers are always Byte-accessible.
16884 ASL Compiler, version X2024:
16886 Fixed a problem where the Switch() operator would either fault or
16887 hang the compiler. Note however, that the AML code for this ACPI
16888 2.0 operator is not yet implemented.
16890 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16893 Implementation of the CreateField operator automatically converts
16894 a reference to a named field within a resource descriptor from a
16895 byte offset to a bit offset if required.
16897 Added some missing named fields from the resource descriptor
16898 support. These are the names that are automatically created by the
16899 compiler to reference fields within a descriptor. They are only
16900 valid at compile time and are not passed through to the AML
16903 Resource descriptor named fields are now typed as Integers and
16904 subject to compile-time typechecking when used in expressions.
16906 ------------------------------------------
16907 Summary of changes for this label: 05_18_01
16909 ACPI CA Core Subsystem:
16911 Fixed a couple of problems in the Field support code where bits
16912 from adjacent fields could be returned along with the proper field
16913 bits. Restructured the field support code to improve performance,
16914 readability and maintainability.
16916 New DEBUG_PRINTP macro automatically inserts the procedure name
16917 into the output, saving hundreds of copies of procedure name
16918 strings within the source, shrinking the memory footprint of the
16919 debug version of the core subsystem.
16921 Source Code Structure:
16923 The source code directory tree was restructured to reflect the
16924 current organization of the component architecture. Some files
16925 and directories have been moved and/or renamed.
16929 Fixed leaking kacpidpc processes.
16931 Fixed queueing event data even when /proc/acpi/event is not
16934 ASL Compiler, version X2020:
16936 Memory allocation performance enhancement - over 24X compile time
16937 improvement on large ASL files. Parse nodes and namestring
16938 buffers are now allocated from a large internal compiler buffer.
16940 The temporary .SRC file is deleted unless the "-s" option is
16943 The "-d" debug output option now sends all output to the .DBG file
16944 instead of the console.
16946 "External" second parameter is now optional
16948 "ElseIf" syntax now properly allows the predicate
16950 Last operand to "Load" now recognized as a Target operand
16952 Debug object can now be used anywhere as a normal object.
16954 ResourceTemplate now returns an object of type BUFFER
16956 EISAID now returns an object of type INTEGER
16958 "Index" now works with a STRING operand
16960 "LoadTable" now accepts optional parameters
16962 "ToString" length parameter is now optional
16964 "Interrupt (ResourceType," parse error fixed.
16966 "Register" with a user-defined region space parse error fixed
16968 Escaped backslash at the end of a string ("\\") scan/parse error
16971 "Revision" is now an object of type INTEGER.
16975 ------------------------------------------
16976 Summary of changes for this label: 05_02_01
16980 /proc/acpi/event now blocks properly.
16982 Removed /proc/sys/acpi. You can still dump your DSDT from
16985 ACPI CA Core Subsystem:
16987 Fixed a problem introduced in the previous label where some of the
16988 "small" resource descriptor types were not recognized.
16990 Improved error messages for the case where an ASL Field is outside
16991 the range of the parent operation region.
16993 ASL Compiler, version X2018:
16996 Added error detection for ASL Fields that extend beyond the length
16997 of the parent operation region (only if the length of the region
16998 is known at compile time.) This includes fields that have a
16999 minimum access width that is smaller than the parent region, and
17000 individual field units that are partially or entirely beyond the
17001 extent of the parent.
17005 ------------------------------------------
17006 Summary of changes for this label: 04_27_01
17008 ACPI CA Core Subsystem:
17010 Fixed a problem where the namespace mutex could be released at the
17011 wrong time during execution of AcpiRemoveAddressSpaceHandler.
17013 Added optional thread ID output for debug traces, to simplify
17014 debugging of multiple threads. Added context switch notification
17015 when the debug code realizes that a different thread is now
17016 executing ACPI code.
17018 Some additional external data types have been prefixed with the
17019 string "ACPI_" for consistency. This may effect existing code.
17020 The data types affected are the external callback typedefs - e.g.,
17022 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
17026 Fixed an issue with the OSL semaphore implementation where a
17027 thread was waking up with an error from receiving a SIGCHLD
17030 Linux version of ACPI CA now uses the system C library for string
17031 manipulation routines instead of a local implementation.
17033 Cleaned up comments and removed TBDs.
17035 ASL Compiler, version X2017:
17037 Enhanced error detection and reporting for all file I/O
17042 Programmer Reference updated to version 1.06.
17046 ------------------------------------------
17047 Summary of changes for this label: 04_13_01
17049 ACPI CA Core Subsystem:
17051 Restructured support for BufferFields and RegionFields.
17052 BankFields support is now fully operational. All known 32-bit
17053 limitations on field sizes have been removed. Both BufferFields
17054 and (Operation) RegionFields are now supported by the same field
17057 Resource support now supports QWORD address and IO resources. The
17058 16/32/64 bit address structures and the Extended IRQ structure
17059 have been changed to properly handle Source Resource strings.
17061 A ThreadId of -1 is now used to indicate a "mutex not acquired"
17062 condition internally and must never be returned by AcpiOsThreadId.
17063 This reserved value was changed from 0 since Unix systems allow a
17068 Driver code reorganized to enhance portability
17070 Added a kernel configuration option to control ACPI_DEBUG
17072 Fixed the EC driver to honor _GLK.
17074 ASL Compiler, version X2016:
17076 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
17077 address space was set to 0, not 0x7f as it should be.
17079 ------------------------------------------
17080 Summary of changes for this label: 03_13_01
17082 ACPI CA Core Subsystem:
17084 During ACPI initialization, the _SB_._INI method is now run if
17087 Notify handler fix - notifies are deferred until the parent method
17088 completes execution. This fixes the "mutex already acquired"
17089 issue seen occasionally.
17091 Part of the "implicit conversion" rules in ACPI 2.0 have been
17092 found to cause compatibility problems with existing ASL/AML. The
17093 convert "result-to-target-type" implementation has been removed
17094 for stores to method Args and Locals. Source operand conversion
17095 is still fully implemented. Possible changes to ACPI 2.0
17096 specification pending.
17098 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
17101 Fix for compiler warnings for 64-bit compiles.
17105 /proc output aligned for easier parsing.
17107 Release-version compile problem fixed.
17109 New kernel configuration options documented in Configure.help.
17111 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
17116 Power resource driver integrated with bus manager.
17118 Fixed kernel fault during active cooling for thermal zones.
17122 The source code tree has been restructured.
17126 ------------------------------------------
17127 Summary of changes for this label: 03_02_01
17129 Linux OS Services Layer (OSL):
17131 Major revision of all Linux-specific code.
17133 Modularized all ACPI-specific drivers.
17135 Added new thermal zone and power resource drivers.
17137 Revamped /proc interface (new functionality is under /proc/acpi).
17139 New kernel configuration options.
17141 Linux known issues:
17143 New kernel configuration options not documented in Configure.help
17147 Module dependencies not currently implemented. If used, they
17148 should be loaded in this order: busmgr, power, ec, system,
17149 processor, battery, ac_adapter, button, thermal.
17151 Modules will not load if CONFIG_MODVERSION is set.
17153 IBM 600E - entering S5 may reboot instead of shutting down.
17155 IBM 600E - Sleep button may generate "Invalid <NULL> context"
17158 Some systems may fail with "execution mutex already acquired"
17161 ACPI CA Core Subsystem:
17163 Added a new OSL Interface, AcpiOsGetThreadId. This was required
17164 for the deadlock detection code. Defined to return a non-zero, 32-
17165 bit thread ID for the currently executing thread. May be a non-
17166 zero constant integer on single-thread systems.
17168 Implemented deadlock detection for internal subsystem mutexes. We
17169 may add conditional compilation for this code (debug only) later.
17171 ASL/AML Mutex object semantics are now fully supported. This
17172 includes multiple acquires/releases by owner and support for the
17174 Mutex SyncLevel parameter.
17176 A new "Force Release" mechanism automatically frees all ASL
17177 Mutexes that have been acquired but not released when a thread
17178 exits the interpreter. This forces conformance to the ACPI spec
17179 ("All mutexes must be released when an invocation exits") and
17180 prevents deadlocked ASL threads. This mechanism can be expanded
17181 (later) to monitor other resource acquisitions if OEM ASL code
17182 continues to misbehave (which it will).
17184 Several new ACPI exception codes have been added for the Mutex
17187 Recursive method calls are now allowed and supported (the ACPI
17188 spec does in fact allow recursive method calls.) The number of
17189 recursive calls is subject to the restrictions imposed by the
17190 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
17193 Implemented support for the SyncLevel parameter for control
17194 methods (ACPI 2.0 feature)
17196 Fixed a deadlock problem when multiple threads attempted to use
17199 Fixed a problem where the string length of a String package
17200 element was not always set in a package returned from
17201 AcpiEvaluateObject.
17203 Fixed a problem where the length of a String package element was
17204 not always included in the length of the overall package returned
17205 from AcpiEvaluateObject.
17207 Added external interfaces (Acpi*) to the ACPI debug memory
17208 manager. This manager keeps a list of all outstanding
17209 allocations, and can therefore detect memory leaks and attempts to
17210 free memory blocks more than once. Useful for code such as the
17211 power manager, etc. May not be appropriate for device drivers.
17212 Performance with the debug code enabled is slow.
17214 The ACPI Global Lock is now an optional hardware element.
17216 ASL Compiler Version X2015:
17218 Integrated changes to allow the compiler to be generated on
17219 multiple platforms.
17221 Linux makefile added to generate the compiler on Linux
17225 All platform-specific headers have been moved to their own
17226 subdirectory, Include/Platform.
17228 New source file added, Interpreter/ammutex.c
17230 New header file, Include/acstruct.h
17234 The programmer reference has been updated for the following new
17235 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
17237 ------------------------------------------
17238 Summary of changes for this label: 02_08_01
17240 Core ACPI CA Subsystem: Fixed a problem where an error was
17241 incorrectly returned if the return resource buffer was larger than
17242 the actual data (in the resource interfaces).
17244 References to named objects within packages are resolved to the
17246 full pathname string before packages are returned directly (via
17247 the AcpiEvaluateObject interface) or indirectly via the resource
17250 Linux OS Services Layer (OSL):
17252 Improved /proc battery interface.
17255 Added C-state debugging output and other miscellaneous fixes.
17257 ASL Compiler Version X2014:
17259 All defined method arguments can now be used as local variables,
17260 including the ones that are not actually passed in as parameters.
17261 The compiler tracks initialization of the arguments and issues an
17262 exception if they are used without prior assignment (just like
17265 The -o option now specifies a filename prefix that is used for all
17266 output files, including the AML output file. Otherwise, the
17267 default behavior is as follows: 1) the AML goes to the file
17268 specified in the DSDT. 2) all other output files use the input
17269 source filename as the base.
17271 ------------------------------------------
17272 Summary of changes for this label: 01_25_01
17274 Core ACPI CA Subsystem: Restructured the implementation of object
17275 store support within the interpreter. This includes support for
17276 the Store operator as well as any ASL operators that include a
17279 Partially implemented support for Implicit Result-to-Target
17280 conversion. This is when a result object is converted on the fly
17281 to the type of an existing target object. Completion of this
17282 support is pending further analysis of the ACPI specification
17283 concerning this matter.
17285 CPU-specific code has been removed from the subsystem (hardware
17288 New Power Management Timer functions added
17290 Linux OS Services Layer (OSL): Moved system state transition code
17291 to the core, fixed it, and modified Linux OSL accordingly.
17293 Fixed C2 and C3 latency calculations.
17296 We no longer use the compilation date for the version message on
17297 initialization, but retrieve the version from AcpiGetSystemInfo().
17299 Incorporated for fix Sony VAIO machines.
17301 Documentation: The Programmer Reference has been updated and
17305 ASL Compiler: Version X2013: Fixed a problem where the line
17306 numbering and error reporting could get out of sync in the
17307 presence of multiple include files.
17309 ------------------------------------------
17310 Summary of changes for this label: 01_15_01
17312 Core ACPI CA Subsystem:
17314 Implemented support for type conversions in the execution of the
17315 ASL Concatenate operator (The second operand is converted to
17316 match the type of the first operand before concatenation.)
17318 Support for implicit source operand conversion is partially
17319 implemented. The ASL source operand types Integer, Buffer, and
17320 String are freely interchangeable for most ASL operators and are
17321 converted by the interpreter on the fly as required. Implicit
17322 Target operand conversion (where the result is converted to the
17323 target type before storing) is not yet implemented.
17325 Support for 32-bit and 64-bit BCD integers is implemented.
17327 Problem fixed where a field read on an aligned field could cause a
17328 read past the end of the field.
17330 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
17331 does not return a value, but the caller expects one. (The ASL
17332 compiler flags this as a warning.)
17337 1. Static typechecking of all operands is implemented. This
17338 prevents the use of invalid objects (such as using a Package where
17339 an Integer is required) at compile time instead of at interpreter
17341 2. The ASL source line is printed with ALL errors and warnings.
17342 3. Bug fix for source EOF without final linefeed.
17343 4. Debug option is split into a parse trace and a namespace trace.
17344 5. Namespace output option (-n) includes initial values for
17345 integers and strings.
17346 6. Parse-only option added for quick syntax checking.
17347 7. Compiler checks for duplicate ACPI name declarations
17350 1. Relaxed typechecking to allow interchangeability between
17351 strings, integers, and buffers. These types are now converted by
17352 the interpreter at runtime.
17353 2. Compiler reports time taken by each internal subsystem in the
17357 ------------------------------------------
17358 Summary of changes for this label: 12_14_00
17362 This is the first official release of the compiler. Since the
17363 compiler requires elements of the Core Subsystem, this label
17364 synchronizes everything.
17366 ------------------------------------------
17367 Summary of changes for this label: 12_08_00
17370 Fixed a problem where named references within the ASL definition
17371 of both OperationRegions and CreateXXXFields did not work
17372 properly. The symptom was an AE_AML_OPERAND_TYPE during
17373 initialization of the region/field. This is similar (but not
17374 related internally) to the problem that was fixed in the last
17377 Implemented both 32-bit and 64-bit support for the BCD ASL
17378 functions ToBCD and FromBCD.
17380 Updated all legal headers to include "2000" in the copyright
17383 ------------------------------------------
17384 Summary of changes for this label: 12_01_00
17386 Fixed a problem where method invocations within the ASL definition
17387 of both OperationRegions and CreateXXXFields did not work
17388 properly. The symptom was an AE_AML_OPERAND_TYPE during
17389 initialization of the region/field:
17391 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17392 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17395 Fixed a problem where operators with more than one nested
17396 subexpression would fail. The symptoms were varied, by mostly
17397 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17398 problem that has gone unnoticed until now.
17400 Subtract (Add (1,2), Multiply (3,4))
17402 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17403 previous build (The prefix part of a relative path was handled
17406 Fixed a problem where Operation Region initialization failed if
17407 the operation region name was a "namepath" instead of a simple
17408 "nameseg". Symptom was an AE_NO_OPERAND error.
17410 Fixed a problem where an assignment to a local variable via the
17411 indirect RefOf mechanism only worked for the first such
17412 assignment. Subsequent assignments were ignored.
17414 ------------------------------------------
17415 Summary of changes for this label: 11_15_00
17417 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17418 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17419 the AML interpreter does NOT have support for the new 2.0 ASL
17420 grammar terms at this time.
17422 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17425 All physical memory addresses across all platforms are now 64 bits
17426 wide. Logical address width remains dependent on the platform
17429 AcpiOsMapMemory interface changed to a 64-bit physical address.
17431 The AML interpreter integer size is now 64 bits, as per the ACPI
17434 For backwards compatibility with ACPI 1.0, ACPI tables with a
17435 revision number less than 2 use 32-bit integers only.
17437 Fixed a problem where the evaluation of OpRegion operands did not
17438 always resolve them to numbers properly.
17440 ------------------------------------------
17441 Summary of changes for this label: 10_20_00
17443 Fix for CBN_._STA issue. This fix will allow correct access to
17444 CBN_ OpRegions when the _STA returns 0x8.
17446 Support to convert ACPI constants (Ones, Zeros, One) to actual
17447 values before a package object is returned
17449 Fix for method call as predicate to if/while construct causing
17450 incorrect if/while behavior
17452 Fix for Else block package lengths sometimes calculated wrong (if
17455 Fix for Processor object length field, was always zero
17457 Table load abort if FACP sanity check fails
17459 Fix for problem with Scope(name) if name already exists
17461 Warning emitted if a named object referenced cannot be found
17462 (resolved) during method execution.
17468 ------------------------------------------
17469 Summary of changes for this label: 9_29_00
17471 New table initialization interfaces: AcpiInitializeSubsystem no
17472 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17473 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17474 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17477 Note: These interface changes require changes to all existing OSDs
17479 The PCI_Config default address space handler is always installed
17480 at the root namespace object.
17482 -------------------------------------------
17483 Summary of changes for this label: 09_15_00
17485 The new initialization architecture is implemented. New
17486 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17487 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17489 (Namespace is automatically loaded when a table is loaded)
17491 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17492 52 bytes to 32 bytes. There is usually one of these for every
17493 namespace object, so the memory savings is significant.
17495 Implemented just-in-time evaluation of the CreateField operators.
17497 Bug fixes for IA-64 support have been integrated.
17499 Additional code review comments have been implemented
17501 The so-called "third pass parse" has been replaced by a final walk
17502 through the namespace to initialize all operation regions (address
17503 spaces) and fields that have not yet been initialized during the
17504 execution of the various _INI and REG methods.
17506 New file - namespace/nsinit.c
17508 -------------------------------------------
17509 Summary of changes for this label: 09_01_00
17511 Namespace manager data structures have been reworked to change the
17512 primary object from a table to a single object. This has
17513 resulted in dynamic memory savings of 3X within the namespace and
17514 2X overall in the ACPI CA subsystem.
17516 Fixed problem where the call to AcpiEvFindPciRootBuses was
17517 inadvertently left commented out.
17519 Reduced the warning count when generating the source with the GCC
17522 Revision numbers added to each module header showing the
17523 SourceSafe version of the file. Please refer to this version
17524 number when giving us feedback or comments on individual modules.
17526 The main object types within the subsystem have been renamed to
17527 clarify their purpose:
17529 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17530 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17531 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17533 NOTE: no changes to the initialization sequence are included in
17536 -------------------------------------------
17537 Summary of changes for this label: 08_23_00
17539 Fixed problem where TerminateControlMethod was being called
17540 multiple times per method
17542 Fixed debugger problem where single stepping caused a semaphore to
17545 Improved performance through additional parse object caching -
17546 added ACPI_EXTENDED_OP type
17548 -------------------------------------------
17549 Summary of changes for this label: 08_10_00
17551 Parser/Interpreter integration: Eliminated the creation of
17552 complete parse trees for ACPI tables and control methods.
17553 Instead, parse subtrees are created and then deleted as soon as
17554 they are processed (Either entered into the namespace or executed
17555 by the interpreter). This reduces the use of dynamic kernel
17556 memory significantly. (about 10X)
17558 Exception codes broken into classes and renumbered. Be sure to
17559 recompile all code that includes acexcep.h. Hopefully we won't
17560 have to renumber the codes again now that they are split into
17561 classes (environment, programmer, AML code, ACPI table, and
17564 Fixed some additional alignment issues in the Resource Manager
17567 Implemented semaphore tracking in the AcpiExec utility, and fixed
17568 several places where mutexes/semaphores were being unlocked
17569 without a corresponding lock operation. There are no known
17570 semaphore or mutex "leaks" at this time.
17572 Fixed the case where an ASL Return operator is used to return an
17575 -------------------------------------------
17576 Summary of changes for this label: 07_28_00
17578 Fixed a problem with the way addresses were calculated in
17579 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17580 manifested itself when a Field was created with WordAccess or
17581 DwordAccess, but the field unit defined within the Field was less
17583 than a Word or Dword.
17585 Fixed a problem in AmlDumpOperands() module's loop to pull
17586 operands off of the operand stack to display information. The
17587 problem manifested itself as a TLB error on 64-bit systems when
17588 accessing an operand stack with two or more operands.
17590 Fixed a problem with the PCI configuration space handlers where
17591 context was getting confused between accesses. This required a
17592 change to the generic address space handler and address space
17593 setup definitions. Handlers now get both a global handler context
17594 (this is the one passed in by the user when executing
17595 AcpiInstallAddressSpaceHandler() and a specific region context
17596 that is unique to each region (For example, the _ADR, _SEG and
17597 _BBN values associated with a specific region). The generic
17598 function definitions have changed to the following:
17600 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17601 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17602 *HandlerContext, // This used to be void *Context void
17603 *RegionContext); // This is an additional parameter
17605 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17606 RegionHandle, UINT32 Function, void *HandlerContext, void
17607 **RegionContext); // This used to be **ReturnContext
17609 -------------------------------------------
17610 Summary of changes for this label: 07_21_00
17612 Major file consolidation and rename. All files within the
17613 interpreter have been renamed as well as most header files. This
17614 was done to prevent collisions with existing files in the host
17615 OSs -- filenames such as "config.h" and "global.h" seem to be
17616 quite common. The VC project files have been updated. All
17617 makefiles will require modification.
17619 The parser/interpreter integration continues in Phase 5 with the
17620 implementation of a complete 2-pass parse (the AML is parsed
17621 twice) for each table; This avoids the construction of a huge
17622 parse tree and therefore reduces the amount of dynamic memory
17623 required by the subsystem. Greater use of the parse object cache
17624 means that performance is unaffected.
17626 Many comments from the two code reviews have been rolled in.
17628 The 64-bit alignment support is complete.
17630 -------------------------------------------
17631 Summary of changes for this label: 06_30_00
17633 With a nod and a tip of the hat to the technology of yesteryear,
17634 we've added support in the source code for 80 column output
17635 devices. The code is now mostly constrained to 80 columns or
17636 less to support environments and editors that 1) cannot display
17637 or print more than 80 characters on a single line, and 2) cannot
17638 disable line wrapping.
17640 A major restructuring of the namespace data structure has been
17641 completed. The result is 1) cleaner and more
17642 understandable/maintainable code, and 2) a significant reduction
17643 in the dynamic memory requirement for each named ACPI object
17646 -------------------------------------------
17647 Summary of changes for this label: 06_23_00
17649 Linux support has been added. In order to obtain approval to get
17650 the ACPI CA subsystem into the Linux kernel, we've had to make
17651 quite a few changes to the base subsystem that will affect all
17652 users (all the changes are generic and OS- independent). The
17653 effects of these global changes have been somewhat far reaching.
17654 Files have been merged and/or renamed and interfaces have been
17655 renamed. The major changes are described below.
17657 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17658 pollution/confusion within our target kernels. All OSD
17659 interfaces must be modified to match the new naming convention.
17661 Files merged across the subsystem. A number of the smaller source
17662 and header files have been merged to reduce the file count and
17663 increase the density of the existing files. There are too many
17664 to list here. In general, makefiles that call out individual
17665 files will require rebuilding.
17667 Interpreter files renamed. All interpreter files now have the
17668 prefix am* instead of ie* and is*.
17670 Header files renamed: The acapi.h file is now acpixf.h. The
17671 acpiosd.h file is now acpiosxf.h. We are removing references to
17672 the acronym "API" since it is somewhat windowsy. The new name is
17673 "external interface" or xface or xf in the filenames.j
17676 All manifest constants have been forced to upper case (some were
17677 mixed case.) Also, the string "ACPI_" has been prepended to many
17678 (not all) of the constants, typedefs, and structs.
17680 The globals "DebugLevel" and "DebugLayer" have been renamed
17681 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17683 All other globals within the subsystem are now prefixed with
17684 "AcpiGbl_" Internal procedures within the subsystem are now
17685 prefixed with "Acpi" (with only a few exceptions). The original
17686 two-letter abbreviation for the subcomponent remains after "Acpi"
17687 - for example, CmCallocate became AcpiCmCallocate.
17689 Added a source code translation/conversion utility. Used to
17690 generate the Linux source code, it can be modified to generate
17691 other types of source as well. Can also be used to cleanup
17692 existing source by removing extraneous spaces and blank lines.
17693 Found in tools/acpisrc/*
17695 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17696 AcpiOsUnmapMemory. (UnMap became Unmap).
17698 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17699 When set to one, this indicates that the caller wants to use the
17701 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17702 both types. However, implementers of this call may want to use
17703 different OS primitives depending on the type of semaphore
17704 requested. For example, some operating systems provide separate
17706 "mutex" and "semaphore" interfaces - where the mutex interface is
17707 much faster because it doesn't have all the overhead of a full
17708 semaphore implementation.
17710 Fixed a deadlock problem where a method that accesses the PCI
17711 address space can block forever if it is the first access to the
17714 -------------------------------------------
17715 Summary of changes for this label: 06_02_00
17717 Support for environments that cannot handle unaligned data
17718 accesses (e.g. firmware and OS environments devoid of alignment
17719 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17720 been added (via configurable macros) in these three areas: -
17721 Transfer of data from the raw AML byte stream is done via byte
17722 moves instead of word/dword/qword moves. - External objects are
17723 aligned within the user buffer, including package elements (sub-
17724 objects). - Conversion of name strings to UINT32 Acpi Names is now
17727 The Store operator was modified to mimic Microsoft's
17728 implementation when storing to a Buffer Field.
17730 Added a check of the BM_STS bit before entering C3.
17732 The methods subdirectory has been obsoleted and removed. A new
17733 file, cmeval.c subsumes the functionality.
17735 A 16-bit (DOS) version of AcpiExec has been developed. The
17736 makefile is under the acpiexec directory.