1 ----------------------------------------
2 8 May 2018. Summary of changes for version 20180508:
5 1) ACPICA kernel-resident subsystem:
7 Completed the new (recently deployed) package resolution mechanism for
8 the Load and LoadTable ASL/AML operators. This fixes a regression that
9 was introduced in version 20180209 that could result in an
10 AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table
11 (SSDT) that contains package objects.
14 2) iASL Compiler/Disassembler and Tools:
16 AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than
17 1 MB. This change allows for table offsets within the acpidump file to be
18 up to 8 characters. These changes are backwards compatible with existing
22 ----------------------------------------
23 27 April 2018. Summary of changes for version 20180427:
26 1) ACPICA kernel-resident subsystem:
28 Debugger: Added support for Package objects in the "Test Objects"
29 command. This command walks the entire namespace and evaluates all named
30 data objects (Integers, Strings, Buffers, and now Packages).
32 Improved error messages for the namespace root node. Originally, the root
33 was referred to by the confusing string "\___". This has been replaced by
34 "Namespace Root" for clarification.
36 Fixed a potential infinite loop in the AcpiRsDumpByteList function. Colin
37 Ian King <colin.king@canonical.com>.
40 2) iASL Compiler/Disassembler and Tools:
42 iASL: Implemented support to detect and flag illegal forward references.
43 For compatibility with other ACPI implementations, these references are
44 now illegal at the root level of the DSDT or SSDTs. Forward references
45 have always been illegal within control methods. This change should not
46 affect existing ASL/AML code because of the fact that these references
47 have always been illegal in the other ACPI implementation.
49 iASL: Added error messages for the case where a table OEM ID and OEM
50 TABLE ID strings are longer than the ACPI-defined length. Previously,
51 these strings were simply silently truncated.
53 iASL: Enhanced the -tc option (which creates an AML hex file in C,
54 suitable for import into a firmware project):
55 1) Create a unique name for the table, to simplify use of multiple
57 2) Add a protection #ifdef in the file, similar to a .h header file.
58 With assistance from Sami Mujawar, sami.mujawar@arm.com and Evan Lloyd,
61 AcpiExec: Added a new option, -df, to disable the local fault handler.
62 This is useful during debugging, where it may be desired to drop into a
65 ----------------------------------------
66 13 March 2018. Summary of changes for version 20180313:
69 1) ACPICA kernel-resident subsystem:
71 Implemented various improvements to the GPE support:
73 1) Dispatch all active GPEs at initialization time so that no GPEs are
75 2) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled
76 before devices are enumerated.
77 3) Don't unconditionally clear ACPI IRQs during suspend/resume, so that
79 4) Add parallel GPE handling to eliminate the possibility of dispatching
81 5) Dispatch any pending GPEs after enabling for the first time.
83 AcpiGetObjectInfo - removed support for the _STA method. This was causing
84 problems on some platforms.
86 Added a new _OSI string, "Windows 2017.2".
88 Cleaned up and simplified the module-level code support. These changes
89 are in preparation for the eventual removal of the legacy MLC support
90 (deferred execution), replaced by the new MLC architecture which executes
91 the MLC as a table is loaded (DSDT/SSDTs).
93 Changed a compile-time option to a runtime option. Changes the option to
94 ignore ACPI table load-time package resolution errors into a runtime
95 option. Used only for platforms that generate many AE_NOT_FOUND errors
96 during boot. AcpiGbl_IgnorePackageResolutionErrors.
98 Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some
99 ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid
100 compilation errors from unused variables (seen with some compilers).
103 2) iASL Compiler/Disassembler and Tools:
105 ASLTS: parallelized execution in order to achieve an (approximately) 2X
106 performance increase.
108 ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves
111 ----------------------------------------
112 09 February 2018. Summary of changes for version 20180209:
115 1) ACPICA kernel-resident subsystem:
117 Completed the final integration of the recent changes to Package Object
118 handling and the module-level AML code support. This allows forward
119 references from individual package elements when the package object is
120 declared from within module-level code blocks. Provides compatibility
121 with other ACPI implementations.
123 The new architecture for the AML module-level code has been completed and
124 is now the default for the ACPICA code. This new architecture executes
125 the module-level code in-line as the ACPI table is loaded/parsed instead
126 of the previous architecture which deferred this code until after the
127 table was fully loaded. This solves some ASL code ordering issues and
128 provides compatibility with other ACPI implementations. At this time,
129 there is an option to fallback to the earlier architecture, but this
130 support is deprecated and is planned to be completely removed later this
133 Added a compile-time option to ignore AE_NOT_FOUND exceptions during
134 resolution of named reference elements within Package objects. Although
135 this is potentially a serious problem, it can generate a lot of
136 noise/errors on platforms whose firmware carries around a bunch of unused
137 Package objects. To disable these errors, define
138 ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All
139 errors are always reported for ACPICA applications such as AcpiExec.
141 Fixed a regression related to the explicit type-conversion AML operators
142 (ToXXXX). The regression was introduced early in 2017 but was not seen
143 until recently because these operators are not fully supported by other
144 ACPI implementations and are thus rarely used by firmware developers. The
145 operators are defined by the ACPI specification to not implement the
146 "implicit result object conversion". The regression incorrectly
147 introduced this object conversion for the following explicit conversion
158 2) iASL Compiler/Disassembler and Tools:
160 iASL: Fixed a problem with the compiler constant folding feature as
161 related to the ToXXXX explicit conversion operators. These operators do
162 not support the "implicit result object conversion" by definition. Thus,
163 ASL expressions that use these operators cannot be folded to a simple
164 Store operator because Store implements the implicit conversion. This
165 change uses the CopyObject operator for the ToXXXX operator folding
166 instead. CopyObject is defined to not implement implicit result
167 conversions and is thus appropriate for folding the ToXXXX operators.
169 iASL: Changed the severity of an error condition to a simple warning for
170 the case where a symbol is declared both locally and as an external
171 symbol. This accommodates existing ASL code.
173 AcpiExec: The -ep option to enable the new architecture for module-level
174 code has been removed. It is replaced by the -dp option which instead has
175 the opposite effect: it disables the new architecture (the default) and
176 enables the legacy architecture. When the legacy code is removed in the
177 future, the -dp option will be removed also.
179 ----------------------------------------
180 05 January 2018. Summary of changes for version 20180105:
183 1) ACPICA kernel-resident subsystem:
185 Updated all copyrights to 2018. This affects all source code modules.
187 Fixed a possible build error caused by an unresolved reference to the
188 AcpiUtSafeStrncpy function.
190 Removed NULL pointer arithmetic in the various pointer manipulation
191 macros. All "(void *) NULL" constructs are converted to "(void *) 0".
192 This eliminates warnings/errors in newer C compilers. Jung-uk Kim.
194 Added support for A32 ABI compilation, which uses the ILP32 model. Anuj
198 2) iASL Compiler/Disassembler and Tools:
200 ASLTS: Updated all copyrights to 2018.
202 Tools: Updated all signon copyrights to 2018.
204 AcpiXtract: Fixed a regression related to ACPI table signatures where the
205 signature was truncated to 3 characters (instead of 4).
207 AcpiExec: Restore the original terminal mode after the use of the -v and
210 ASLTS: Deployed the iASL __METHOD__ macro across the test suite.
212 ----------------------------------------
213 14 December 2017. Summary of changes for version 20171214:
216 1) ACPICA kernel-resident subsystem:
218 Fixed a regression in the external (public) AcpiEvaluateObjectTyped
219 interface where the optional "pathname" argument had inadvertently become
220 a required argument returning an error if omitted (NULL pointer
223 Fixed two possible memory leaks related to the recently developed "late
224 resolution" of reference objects within ASL Package Object definitions.
226 Added two recently defined _OSI strings: "Windows 2016" and "Windows
227 2017". Mario Limonciello.
229 Implemented and deployed a safer version of the C library function
230 strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the
231 creation of unterminated strings as a possible result of a standard
234 Cleaned up and restructured the global variable file (acglobal.h). There
235 are many changes, but no functional changes.
238 2) iASL Compiler/Disassembler and Tools:
240 iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the
241 optional OemData field at the end of the table was incorrectly required
242 for proper compilation. It is now correctly an optional field.
244 ASLTS: The entire suite was converted from standard ASL to the ASL+
245 language, using the ASL-to-ASL+ converter which is integrated into the
246 iASL compiler. A binary compare of all output files has verified the
247 correctness of the conversion.
249 iASL: Fixed the source code build for platforms where "char" is unsigned.
250 This affected the iASL lexer only. Jung-uk Kim.
252 ----------------------------------------
253 10 November 2017. Summary of changes for version 20171110:
256 1) ACPICA kernel-resident subsystem:
258 This release implements full support for ACPI 6.2A:
259 NFIT - Added a new subtable, "Platform Capabilities Structure"
260 No other changes to ACPICA were required, since ACPI 6.2A is primarily an
261 errata release of the specification.
263 Other ACPI table changes:
264 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo
265 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy
268 Utilities: Modified the string/integer conversion functions to use
269 internal 64-bit divide support instead of a native divide. On 32-bit
270 platforms, a 64-bit divide typically requires a library function which
271 may not be present in the build (kernel or otherwise).
273 Implemented a targeted error message for timeouts returned from the
274 Embedded Controller device driver. This is seen frequently enough to
275 special-case an AE_TIME returned from an EC operation region access:
276 "Timeout from EC hardware or EC device driver"
278 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all
279 runtime error messages have the identical prefix.
282 2) iASL Compiler/Disassembler and Tools:
284 AcpiXtract: Fixed a problem with table header detection within the
285 acpidump file. Processing a table could be ended early if a 0x40 (@)
286 appears in the original binary table, resulting in the @ symbol appearing
287 in the decoded ASCII field at the end of the acpidump text line. The
288 symbol caused acpixtract to incorrectly think it had reached the end of
289 the current table and the beginning of a new table.
291 AcpiXtract: Added an option (-f) to ignore some errors during table
292 extraction. This initial implementation ignores non-ASCII and non-
293 printable characters found in the acpidump text file.
295 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics
296 for ASLTS. This feature is used to track memory allocations from
297 different memory caches within the ACPICA code. At the end of an ASLTS
298 run, these memory statistics are recorded and stored in a log file.
300 Debugger (user-space version): Implemented a simple "Background" command.
301 Creates a new thread to execute a control method in the background, while
302 control returns to the debugger prompt to allow additional commands.
303 Syntax: Background <Namepath> [Arguments]
305 ----------------------------------------
306 29 September 2017. Summary of changes for version 20170929:
309 1) ACPICA kernel-resident subsystem:
311 Redesigned and implemented an improved ASL While() loop timeout
312 mechanism. This mechanism is used to prevent infinite loops in the kernel
313 AML interpreter caused by either non-responsive hardware or incorrect AML
314 code. The new implementation uses AcpiOsGetTimer instead of a simple
315 maximum loop count, and is thus more accurate and constant across
316 different machines. The default timeout is currently 30 seconds, but this
317 may be adjusted later.
319 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to
320 better reflect the new implementation of the loop timeout mechanism.
322 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support
323 and to fix an off-by-one error. Jung-uk Kim.
325 Fixed an EFI build problem by updating the makefiles to for a new file
326 that was added, utstrsuppt.c
329 2) iASL Compiler/Disassembler and Tools:
331 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This
332 includes support in the table disassembler, compiler, and template
335 iASL: Added an exception for an illegal type of recursive method
336 invocation. If a method creates named objects, the first recursive call
337 will fail at runtime. This change adds an error detection at compile time
338 to catch the problem up front. Note: Marking such a method as
339 "serialized" will not help with this problem, because the same thread can
340 acquire the method mutex more than once. Example compiler and runtime
350 Error 6152 - ^ Illegal recursive call to method
351 that creates named objects (MTH1)
353 Previous runtime exception:
354 ACPI Error: [INT1] Namespace lookup failure,
355 AE_ALREADY_EXISTS (20170831/dswload2-465)
357 iASL: Updated support for External() opcodes to improve namespace
358 management and error detection. These changes are related to issues seen
359 with multiple-segment namespace pathnames within External declarations,
362 External(\_SB.PCI0.GFX0, DeviceObj)
363 External(\_SB.PCI0.GFX0.ALSI)
365 iASL: Implemented support for multi-line error/warning messages. This
366 enables more detailed and helpful error messages as below, from the
367 initial deployment for the duplicate names error:
369 DSDT.iiii 1692: Device(PEG2) {
370 Error 6074 - ^ Name already exists in scope
373 Original name creation/declaration below:
374 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj)
376 AcpiXtract: Added additional flexibility to support differing input hex
377 dump formats. Specifically, hex dumps that contain partial disassembly
378 and/or comments within the ACPI table data definition. There exist some
379 dump utilities seen in the field that create this type of hex dump (such
380 as Simics). For example:
382 DSDT @ 0xdfffd0c0 (10999 bytes)
390 Creator_id 1280593481
391 Creator_revision 537399345
392 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00
394 2af0: 5f 4c 30 46 00 a4 01
396 Test suite: Miscellaneous changes/fixes:
397 More cleanup and simplification of makefiles
398 Continue compilation of test cases after a compile failure
399 Do not perform binary compare unless both files actually exist
401 iASL: Performed some code/module restructuring. Moved all memory
402 allocation functions to new modules. Two new files, aslallocate.c and
405 ----------------------------------------
406 31 August 2017. Summary of changes for version 20170831:
409 1) ACPICA kernel-resident subsystem:
411 Implemented internal support for full 64-bit addresses that appear in all
412 Generic Address Structure (GAS) structures. Previously, only the lower 32
413 bits were used. Affects the use of GAS structures in the FADT and other
414 tables, as well as the GAS structures passed to the AcpiRead and
415 AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
417 Added header support for the PDTT ACPI table (Processor Debug Trigger
418 Table). Full support in the iASL Data Table Compiler and disassembler is
422 2) iASL Compiler/Disassembler and Tools:
424 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
425 Properties Topology Table) where a flag bit was specified in the wrong
426 bit position ("Line Size Valid", bit 6).
428 iASL: Implemented support for Octal integer constants as defined by the
429 ASL language grammar, per the ACPI specification. Any integer constant
430 that starts with a zero is an octal constant. For example,
431 Store (037777, Local0) /* Octal constant */
432 Store (0x3FFF, Local0) /* Hex equivalent */
433 Store (16383, Local0) /* Decimal equivalent */
435 iASL: Improved overflow detection for 64-bit string conversions during
436 compilation of integer constants. "Overflow" in this case means a string
437 that represents an integer that is too large to fit into a 64-bit value.
438 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
439 the low-order 32 bits with a warning, as previously implemented. Several
440 new exceptions are defined that indicate a 64-bit overflow, as well as
441 the base (radix) that was used during the attempted conversion. Examples:
442 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
443 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
444 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
446 iASL: Added a warning for the case where a ResourceTemplate is declared
447 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
448 this case, the resulting template is created with a single END_TAG
449 descriptor, which is essentially useless.
451 iASL: Expanded the -vw option (ignore specific warnings/remarks) to
452 include compilation error codes as well.
454 ----------------------------------------
455 28 July 2017. Summary of changes for version 20170728:
458 1) ACPICA kernel-resident subsystem:
460 Fixed a regression seen with small resource descriptors that could cause
461 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
463 AML interpreter: Implemented a new feature that allows forward references
464 from individual named references within package objects that are
465 contained within blocks of "module-level code". This provides
466 compatibility with other ACPI implementations and supports existing
467 firmware that depends on this feature. Example:
470 If (ABCD) /* An If() at module-level */
472 Name (PKG1, Package()
474 INT1 /* Forward reference to object INT1
480 AML Interpreter: Fixed a problem with the Alias() operator where aliases
481 to some ASL objects were not handled properly. Objects affected are:
482 Mutex, Event, and OperationRegion.
484 AML Debugger: Enhanced to properly handle AML Alias objects. These
485 objects have one level of indirection which was not fully supported by
488 Table Manager: Added support to detect and ignore duplicate SSDTs within
489 the XSDT/RSDT. This error in the XSDT has been seen in the field.
491 EFI and EDK2 support:
492 Enabled /WX flag for MSVC builds
493 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
494 Added local support for 64-bit multiply and shift operations
495 Added support to compile acpidump.efi on Windows
496 Added OSL function stubs for interfaces not used under EFI
498 Added additional support for the _DMA predefined name. _DMA returns a
499 buffer containing a resource template. This change add support within the
500 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
501 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
504 2) iASL Compiler/Disassembler and Tools:
506 iASL: Fixed a problem where the internal input line buffer(s) could
507 overflow if there are very long lines in the input ASL source code file.
508 Implemented buffer management that automatically increases the size of
509 the buffers as necessary.
511 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
512 errors. If the specified exception is not raised during compilation, the
513 compiler emits an error. This is intended to support the ASL test suite,
514 but may be useful in other contexts.
516 iASL: Implemented a new predefined macro, __METHOD__, which returns a
517 string containing the name of the current control method that is being
520 iASL: Implemented debugger and table compiler support for the SDEI ACPI
521 table (Software Delegated Exception Interface). James Morse
522 <james.morse@arm.com>
524 Unix/Linux makefiles: Added an option to disable compile optimizations.
525 The disable occurs when the NOOPT flag is set to TRUE.
526 theracermaster@gmail.com
528 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
529 when there are different tables for 32-bit versus 64-bit.
531 Enhanced error reporting for the ASL test suite (ASLTS) by removing
532 unnecessary/verbose text, and emit the actual line number where an error
533 has occurred. These changes are intended to improve the usefulness of the
536 ----------------------------------------
537 29 June 2017. Summary of changes for version 20170629:
540 1) ACPICA kernel-resident subsystem:
542 Tables: Implemented a deferred ACPI table verification. This is useful
543 for operating systems where the tables cannot be verified in the early
544 initialization stage due to early memory mapping limitations on some
545 architectures. Lv Zheng.
547 Tables: Removed the signature validation for dynamically loaded tables.
548 Provides compatibility with other ACPI implementations. Previously, only
549 SSDT tables were allowed, as per the ACPI specification. Now, any table
550 signature can be used via the Load() operator. Lv Zheng.
552 Tables: Fixed several mutex issues that could cause errors during table
553 acquisition. Lv Zheng.
555 Tables: Fixed a problem where an ACPI warning could be generated if a
556 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
558 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
559 AcpiPutTable interfaces. This applies to the "late stage" table loading
560 when the use of AcpiPutTable is no longer required (since the system
561 memory manager is fully running and available). Lv Zheng.
563 Fixed/Reverted a regression during processing of resource descriptors
564 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
565 exception in this case.
567 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
568 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
570 Interpreter: Fixed a possible fault if an Alias operator with an invalid
571 or duplicate target is encountered during Alias creation in
572 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
574 Added an option to use designated initializers for function pointers.
575 Kees Cook <keescook@google.com>
578 2) iASL Compiler/Disassembler and Tools:
580 iASL: Allow compilation of External declarations with target pathnames
581 that refer to existing named objects within the table. Erik Schmauss.
583 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
584 FieldUnit name also is declared via External in the same table. Erik
587 iASL: Allow existing scope names within pathnames used in External
588 statements. For example:
589 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
592 iASL: IORT ACPI table: Implemented changes required to decode the new
593 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
594 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
596 Disassembler: Don't abort disassembly on errors from External()
597 statements. Erik Schmauss.
599 Disassembler: fixed a possible fault when one of the Create*Field
600 operators references a Resource Template. ACPICA Bugzilla 1396.
602 iASL: In the source code, resolved some naming inconsistences across the
603 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
604 Adds a new file, aslparseop.c
606 ----------------------------------------
607 31 May 2017. Summary of changes for version 20170531:
612 The ACPI specification version 6.2 has been released and is available at
613 http://uefi.org/specifications
615 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
616 are summarized below.
618 New ACPI tables (Table Compiler/Disassembler/Templates):
619 HMAT (Heterogeneous Memory Attributes Table)
620 WSMT (Windows SMM Security Mitigation Table)
621 PPTT (Processor Properties Topology Table)
623 New subtables for existing ACPI tables:
624 HEST (New subtable, Arch-deferred machine check)
625 SRAT (New subtable, Arch-specific affinity structure)
626 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
628 Simple updates for existing ACPI tables:
629 BGRT (two new flag bits)
630 HEST (New bit defined for several subtables, GHES_ASSIST)
632 New Resource Descriptors and Resource macros (Compiler/Disassembler):
638 New type for hardware error notification (section 18.3.2.9)
640 New predefined names/methods (Compiler/Interpreter):
641 _HMA (Heterogeneous Memory Attributes)
642 _LSI (Label Storage Information)
643 _LSR (Label Storage Read)
644 _LSW (Label Storage Write)
646 ASL grammar/macro changes (Compiler):
647 For() ASL macro, implemented with the AML while operator
648 Extensions to Concatenate operator
649 Support for multiple definition blocks in same ASL file
650 Clarification for Buffer operator
651 Allow executable AML code underneath all scopes (Devices, etc.)
652 Clarification/change for the _OSI return value
653 ASL grammar update for reference operators
654 Allow a zero-length string for AML filename in DefinitionBlock
657 New device object notification value
658 Remove a notify value (0x0C) for graceful shutdown
659 New UUIDs for processor/cache properties and
660 physical package property
661 New _HID, ACPI0014 (Wireless Power Calibration Device)
664 1) ACPICA kernel-resident subsystem:
666 Added support to disable ACPI events on hardware-reduced platforms.
667 Eliminates error messages of the form "Could not enable fixed event". Lv
670 Fixed a problem using Device/Thermal objects with the ObjectType and
671 DerefOf ASL operators. This support had not been fully/properly
674 Fixed a problem where if a Buffer object containing a resource template
675 was longer than the actual resource template, an error was generated --
676 even though the AML is legal. This case has been seen in the field.
678 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
679 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
681 Added header file changes for the TPM2 ACPI table. Update to new version
682 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
684 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
685 These interfaces are intended to be used only in conjunction with the
686 predefined _DLM method (Device Lock Method). "This object appears in a
687 device scope when AML access to the device must be synchronized with the
690 Example Code and Data Size: These are the sizes for the OS-independent
691 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
692 debug version of the code includes the debug output trace mechanism and
693 has a much larger code and data size.
696 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
697 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
699 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
700 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
703 2) iASL Compiler/Disassembler and Tools:
705 iASL: Fixed a problem where an External() declaration could not refer to
706 a Field Unit. Erik Schmauss.
708 Disassembler: Improved support for the Switch/Case operators. This
709 feature will disassemble AML code back to the original Switch operators
710 when possible, instead of an If..Else sequence. David Box
712 iASL and disassembler: Improved the handling of multiple extraneous
713 parentheses for both ASL input and disassembled ASL output.
715 Improved the behavior of the iASL compiler and disassembler to detect
716 improper use of external declarations
718 Disassembler: Now aborts immediately upon detection of an unknown AML
719 opcode. The AML parser has no real way to recover from this, and can
720 result in the creation of an ill-formed parse tree that causes errors
721 later during the disassembly.
723 All tools: Fixed a problem where the Unix application OSL did not handle
724 control-c correctly. For example, a control-c could incorrectly wake the
727 AcpiExec: Improved the Control-C handling and added a handler for
728 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
731 Reduced the verbosity of the generic unix makefiles. Previously, each
732 compilation displayed the full set of compiler options. This has been
733 eliminated as the options are easily inspected within the makefiles. Each
734 compilation now results in a single line of output.
736 ----------------------------------------
737 03 March 2017. Summary of changes for version 20170303:
742 The licensing information at the start of each source code module has
743 been updated. In addition to the Intel license, the dual GPLv2/BSD
744 license has been added for completeness. Now, a single version of the
745 source code should be suitable for all ACPICA customers. This is the
746 major change for this release since it affects all source code modules.
749 1) ACPICA kernel-resident subsystem:
751 Fixed two issues with the common asltypes.h header that could cause
752 problems in some environments: (Kim Jung-uk)
753 Removed typedef for YY_BUFFER_STATE ?
754 Fixes an error with earlier versions of Flex.
755 Removed use of FILE typedef (which is only defined in stdio.h)
758 2) iASL Compiler/Disassembler and Tools:
760 Disassembler: fixed a regression introduced in 20170224. A fix for a
761 memory leak related to resource descriptor tags (names) could fault when
762 the disassembler was generated with 64-bit compilers.
764 The ASLTS test suite has been updated to implement a new testing
765 architecture. During generation of the suite from ASL source, both the
766 ASL and ASL+ compilers are now validated, as well as the disassembler
767 itself (Erik Schmauss). The architecture executes as follows:
769 For every ASL source module:
770 Compile (legacy ASL compilation)
771 Disassemble the resulting AML to ASL+ source code
772 Compile the new ASL+ module
773 Perform a binary compare on the legacy AML and the new ASL+ AML
774 The ASLTS suite then executes normally using the AML binaries.
776 ----------------------------------------
777 24 February 2017. Summary of changes for version 20170224:
780 1) ACPICA kernel-resident subsystem:
782 Interpreter: Fixed two issues with the control method return value auto-
783 repair feature, where an attempt to double-delete an internal object
784 could result in an ACPICA warning (for _CID repair and others). No fault
785 occurs, however, because the attempted deletion (actually a release to an
786 internal cache) is detected and ignored via object poisoning.
788 Debugger: Fixed an AML interpreter mutex issue during the single stepping
789 of control methods. If certain debugger commands are executed during
790 stepping, a mutex aquire/release error could occur. Lv Zheng.
792 Fixed some issues generating ACPICA with the Intel C compiler by
793 restoring the original behavior and compiler-specific include file in
796 Example Code and Data Size: These are the sizes for the OS-independent
797 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
798 debug version of the code includes the debug output trace mechanism and
799 has a much larger code and data size.
802 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
803 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
805 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
806 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
809 2) iASL Compiler/Disassembler and Tools:
811 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
812 tool has been designed, implemented, and included in this release. The
813 key feature of this utility is that the original comments within the
814 input ASL file are preserved during the conversion process, and included
815 within the converted ASL+ file -- thus creating a transparent conversion
816 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
818 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
821 iASL/Disassembler: Improved the detection and correct disassembly of
822 Switch/Case operators. This feature detects sequences of if/elseif/else
823 operators that originated from ASL Switch/Case/Default operators and
824 emits the original operators. David Box.
826 iASL: Improved the IORT ACPI table support in the following areas. Lv
828 Clear MappingOffset if the MappingCount is zero.
829 Fix the disassembly of the SMMU GSU interrupt offset.
830 Update the template file for the IORT table.
832 Disassembler: Enhanced the detection and disassembly of resource
833 template/descriptor within a Buffer object. An EndTag descriptor is now
834 required to have a zero second byte, since all known ASL compilers emit
835 this. This helps eliminate incorrect decisions when a buffer is
836 disassembled (false positives on resource templates).
838 ----------------------------------------
839 19 January 2017. Summary of changes for version 20170119:
842 1) General ACPICA software:
844 Entire source code base: Added the 2017 copyright to all source code
845 legal/licensing module headers and utility/tool signons. This includes
846 the standard Linux dual-license header. This affects virtually every file
847 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
848 the ACPICA test suite.
851 2) iASL Compiler/Disassembler and Tools:
853 iASL: Removed/fixed an inadvertent remark when a method argument
854 containing a reference is used as a target operand within the method (and
855 never used as a simple argument), as in the example below. Jeffrey Hugo.
857 dsdt.asl 1507: Store(0x1, Arg0)
858 Remark 2146 - ^ Method Argument is never used (Arg0)
860 All tools: Removed the bit width of the compiler that generated the tool
861 from the common signon for all user space tools. This proved to be
862 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
863 from the generic makefiles (Thomas Petazzoni). Example below.
866 ASL+ Optimizing Compiler version 20170119-32
867 ASL+ Optimizing Compiler version 20170119-64
870 ASL+ Optimizing Compiler version 20170119
872 ----------------------------------------
873 22 December 2016. Summary of changes for version 20161222:
876 1) ACPICA kernel-resident subsystem:
878 AML Debugger: Implemented a new mechanism to simplify and enhance
879 debugger integration into all environments, including kernel debuggers
880 and user-space utilities, as well as remote debug services. This
881 mechanism essentially consists of new OSL interfaces to support debugger
882 initialization/termination, as well as wait/notify interfaces to perform
883 the debugger handshake with the host. Lv Zheng.
886 AcpiOsInitializeDebugger (void)
887 AcpiOsTerminateDebugger (void)
888 AcpiOsWaitCommandReady (void)
889 AcpiOsNotifyCommandComplete (void)
891 New OS services layer:
892 osgendbg.c -- Example implementation, and used for AcpiExec
894 Update for Generic Address Space (GAS) support: Although the AccessWidth
895 and/or BitOffset fields of the GAS are not often used, this change now
896 fully supports these fields. This affects the internal support for FADT
897 registers, registers in other ACPI data tables, and the AcpiRead and
898 AcpiWrite public interfaces. Lv Zheng.
900 Sleep support: In order to simplify integration of ACPI sleep for the
901 various host operating systems, a new OSL interface has been introduced.
902 AcpiOsEnterSleep allows the host to perform any required operations
903 before the final write to the sleep control register(s) is performed by
907 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
909 Called from these internal interfaces:
913 EFI support: Added a very small EFI/ACPICA example application. Provides
914 a simple demo for EFI integration, as well as assisting with resolution
915 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
917 source/tools/efihello/efihello.c
919 Local C library: Implemented several new functions to enhance ACPICA
920 portability, for environments where these clib functions are not
921 available (such as EFI). Lv Zheng:
928 Fixed a regression where occasionally a valid resource descriptor was
929 incorrectly detected as invalid at runtime, and a
930 AE_AML_NO_RESOURCE_END_TAG was returned.
932 Fixed a problem with the recently implemented support that enables
933 control method invocations as Target operands to many ASL operators.
934 Warnings of this form: "Needed type [Reference], found [Processor]" were
935 seen at runtime for some method invocations.
937 Example Code and Data Size: These are the sizes for the OS-independent
938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
939 debug version of the code includes the debug output trace mechanism and
940 has a much larger code and data size.
943 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
944 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
946 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
947 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
950 2) iASL Compiler/Disassembler and Tools:
952 Disassembler: Enhanced output by adding the capability to detect and
953 disassemble ASL Switch/Case statements back to the original ASL source
954 code instead of if/else blocks. David Box.
956 AcpiHelp: Split a large file into separate files based upon
957 functionality/purpose. New files are:
961 ----------------------------------------
962 17 November 2016. Summary of changes for version 20161117:
965 1) ACPICA kernel-resident subsystem:
967 Table Manager: Fixed a regression introduced in 20160729, "FADT support
968 cleanup". This was an attempt to remove all references in the source to
969 the FADT version 2, which never was a legal version number. It was
970 skipped because it was an early version of 64-bit support that was
971 eventually abandoned for the current 64-bit support.
973 Interpreter: Fixed a problem where runtime implicit conversion was
974 incorrectly disabled for the ASL operators below. This brings the
975 behavior into compliance with the ACPI specification:
983 Table Manager: Added a new public interface, AcpiPutTable, used to
984 release and free an ACPI table returned by AcpiGetTable and related
985 interfaces. Lv Zheng.
987 Example Code and Data Size: These are the sizes for the OS-independent
988 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
989 debug version of the code includes the debug output trace mechanism and
990 has a much larger code and data size.
993 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
994 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
996 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
997 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
1000 2) iASL Compiler/Disassembler and Tools:
1002 Disassembler: Fixed a regression for disassembly of Resource Template.
1003 Detection of templates in the AML stream missed some types of templates.
1005 iASL: Fixed a problem where an Access Size error was returned for the PCC
1006 address space when the AccessSize of the GAS register is greater than a
1009 iASL: Implemented several grammar changes for the operators below. These
1010 changes are slated for the next version of the ACPI specification:
1011 RefOf - Disallow method invocation as an operand
1012 CondRefOf - Disallow method invocation as an operand
1013 DerefOf - Disallow operands that use the result from operators
1015 do not return a reference (Changed TermArg to
1018 iASL: Control method invocations are now allowed for Target operands, as
1019 per the ACPI specification. Removed error for using a control method
1020 invocation as a Target operand.
1022 Disassembler: Improved detection of Resource Templates, Unicode, and
1023 Strings within Buffer objects. These subtypes do not contain a specific
1024 opcode to indicate the originating ASL code, and they must be detected by
1025 other means within the disassembler.
1027 iASL: Implemented an optimization improvement for 32-bit ACPI tables
1028 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
1029 only after 64-bit to 32-bit truncation. A truncation warning message is
1030 still emitted, however.
1032 AcpiXtract: Implemented handling for both types of line terminators (LF
1033 or CR/LF) so that it can accept AcpiDump output files from any system.
1036 AcpiBin: Added two new options for comparing AML files:
1037 -a: compare and display ALL mismatches
1038 -o: start compare at this offset into the second file
1040 ----------------------------------------
1041 30 September 2016. Summary of changes for version 20160930:
1044 1) ACPICA kernel-resident subsystem:
1046 Fixed a regression in the internal AcpiTbFindTable function where a non
1047 AE_OK exception could inadvertently be returned even if the function did
1048 not fail. This problem affects the following operators:
1052 Fixed a regression in the LoadTable operator where a load to any
1053 namespace location other than the root no longer worked properly.
1055 Increased the maximum loop count value that will result in the
1056 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
1057 prevent infinite loops within the AML interpreter and thus the host OS
1058 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
1061 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
1062 acpixf.h file. This allows hosts to easily configure the maximum loop
1065 Removed an illegal character in the strtoul64.c file. This character
1066 caused errors with some C compilers.
1068 Example Code and Data Size: These are the sizes for the OS-independent
1069 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1070 debug version of the code includes the debug output trace mechanism and
1071 has a much larger code and data size.
1074 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
1075 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
1077 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
1078 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1081 2) iASL Compiler/Disassembler and Tools:
1083 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
1084 the simpler ASL ElseIf keyword. During the conversion, a trailing If
1085 block could be lost and missing from the disassembled output.
1087 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
1088 the missing rule caused a parse error when using the Index operator as an
1089 operand to ObjectType. This construct now compiles properly. Example:
1090 ObjectType(PKG1[4]).
1092 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
1093 option). Previously, unresolved symbols could cause a protection fault.
1094 Such symbols are now marked as unresolved in the map file.
1096 iASL: Implemented support to allow control method invocations as an
1097 operand to the ASL DeRefOf operator. Example:
1098 DeRefOf(MTH1(Local0))
1100 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
1101 possible _PLD buffer now includes examination of both the normal buffer
1102 length (16 or 20) as well as the surrounding AML package length.
1104 Disassembler: Fixed a problem with the decoding of complex expressions
1105 within the Divide operator for ASL+. For the case where both the quotient
1106 and remainder targets are specified, the entire statement cannot be
1107 disassembled. Previously, the output incorrectly contained a mix of ASL-
1108 and ASL+ operators. This mixed statement causes a syntax error when
1110 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
1112 Divide (INT1 + 6, 128, RSLT, QUOT)
1114 iASL/Tools: Added support to process AML and non-AML ACPI tables
1115 consistently. For the disassembler and AcpiExec, allow all types of ACPI
1116 tables (AML and data tables). For the iASL -e option, allow only AML
1119 ----------------------------------------
1120 31 August 2016. Summary of changes for version 20160831:
1123 1) ACPICA kernel-resident subsystem:
1125 Improve support for the so-called "module-level code", which is defined
1126 to be math, logical and control AML opcodes that appear outside of any
1127 control method. This change improves the support by adding more opcodes
1128 that can be executed in the manner. Some other issues have been solved,
1129 and the ASL grammar changes to support such code under all scope
1130 operators (Device, etc.) are complete. Lv Zheng.
1132 UEFI support: these OSL functions have been implemented. This is an
1133 additional step toward supporting the AcpiExec utility natively (with
1134 full hardware access) under UEFI. Marcelo Ferreira.
1135 AcpiOsReadPciConfiguration
1136 AcpiOsWritePciConfiguration
1138 Fixed a possible mutex error during control method auto-serialization. Lv
1141 Updated support for the Generic Address Structure by fully implementing
1142 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
1145 Updated the return value for the internal _OSI method. Instead of
1146 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
1147 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
1148 implementations, and will be reflected and clarified in the next version
1149 of the ACPI specification.
1151 Implemented two new table events that can be passed to an ACPICA table
1152 handler. These events are used to indicate a table installation or
1153 uninstallation. These events are used in addition to existed table load
1154 and unload events. Lv Zheng.
1156 Implemented a cleanup for all internal string-to-integer conversions.
1157 Consolidate multiple versions of this functionality and limit possible
1158 bases to either 10 or 16 to simplify the code. Adds a new file,
1161 Cleanup the inclusion order of the various compiler-specific headers.
1162 This simplifies build configuration management. The compiler-specific
1163 headers are now split out from the host-specific headers. Lv Zheng.
1165 Example Code and Data Size: These are the sizes for the OS-independent
1166 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1167 debug version of the code includes the debug output trace mechanism and
1168 has a much larger code and data size.
1171 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
1172 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
1175 2) iASL Compiler/Disassembler and Tools:
1177 iASL/AcpiExec: Added a command line option to display the build date/time
1178 of the tool (-vd). This can be useful to verify that the correct version
1179 of the tools are being used.
1181 AML Debugger: Implemented a new subcommand ("execute predef") to execute
1182 all predefined control methods and names within the current namespace.
1183 This can be useful for debugging problems with ACPI tables and the ACPI
1186 ----------------------------------------
1187 29 July 2016. Summary of changes for version 20160729:
1190 1) ACPICA kernel-resident subsystem:
1192 Implemented basic UEFI support for the various ACPICA tools. This
1194 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
1195 2) Support to obtain the ACPI tables on UEFI.
1196 3) Local implementation of required C library functions not available on
1198 4) A front-end (main) function for the tools for UEFI-related
1201 The initial deployment of this support is the AcpiDump utility executing
1202 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
1203 Current environments supported are Linux/Unix. MSVC generation is not
1204 supported at this time. See the generate/efi/README file for build
1205 instructions. Lv Zheng.
1207 Future plans include porting the AcpiExec utility to execute natively on
1208 the platform with I/O and memory access. This will allow viewing/dump of
1209 the platform namespace and native execution of ACPI control methods that
1210 access the actual hardware. To fully implement this support, the OSL
1211 functions below must be implemented with UEFI interfaces. Any community
1212 help in the implementation of these functions would be appreciated:
1217 AcpiOsReadPciConfiguration
1218 AcpiOsWritePciConfiguration
1220 Restructured and standardized the C library configuration for ACPICA,
1221 resulting in the various configuration options below. This includes a
1222 global restructuring of the compiler-dependent and platform-dependent
1223 include files. These changes may affect the existing platform-dependent
1224 configuration files on some hosts. Lv Zheng.
1226 The current C library configuration options appear below. For any issues,
1227 it may be helpful to examine the existing compiler-dependent and
1228 platform-dependent files as examples. Lv Zheng.
1231 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1233 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1234 2) Unix/Windows/BSD applications:
1235 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
1237 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1238 3) UEFI applications:
1239 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1241 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
1242 4) UEFI applications (EDK2/StdLib):
1243 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
1244 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
1247 AML interpreter: "module-level code" support. Allows for execution of so-
1248 called "executable" AML code (math/logical operations, etc.) outside of
1249 control methods not just at the module level (top level) but also within
1250 any scope declared outside of a control method - Scope{}, Device{},
1251 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
1253 Simplified the configuration of the "maximum AML loops" global option by
1254 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
1255 modified at runtime.
1258 Example Code and Data Size: These are the sizes for the OS-independent
1259 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1260 debug version of the code includes the debug output trace mechanism and
1261 has a much larger code and data size.
1264 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
1265 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
1268 2) iASL Compiler/Disassembler and Tools:
1270 iASL: Add full support for the RASF ACPI table (RAS Features Table).
1271 Includes disassembler, data table compiler, and header support.
1273 iASL Expand "module-level code" support. Allows for
1274 compilation/disassembly of so-called "executable" AML code (math/logical
1275 operations, etc.) outside of control methods not just at the module level
1276 (top level) but also within any scope declared outside of a control
1277 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
1280 AcpiDump: Added support for dumping all SSDTs on newer versions of
1281 Windows. These tables are now easily available -- SSDTs are not available
1282 through the registry on older versions.
1284 ----------------------------------------
1285 27 May 2016. Summary of changes for version 20160527:
1288 1) ACPICA kernel-resident subsystem:
1290 Temporarily reverted the new arbitrary bit length/alignment support in
1291 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
1292 a number of regressions with the new code that need to be fully resolved
1293 and tested before this support can be finally integrated into ACPICA.
1294 Apologies for any inconveniences these issues may have caused.
1296 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
1297 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
1298 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
1300 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
1301 option. Adds a new return macro, return_STR. Junk-uk Kim.
1303 Example Code and Data Size: These are the sizes for the OS-independent
1304 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1305 debug version of the code includes the debug output trace mechanism and
1306 has a much larger code and data size.
1309 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
1310 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1312 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1313 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
1315 ----------------------------------------
1316 22 April 2016. Summary of changes for version 20160422:
1318 1) ACPICA kernel-resident subsystem:
1320 Fixed a regression in the GAS (generic address structure) arbitrary bit
1321 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
1322 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
1324 ACPI 6.0: Added support for new/renamed resource macros. One new argument
1325 was added to each of these macros, and the original name has been
1326 deprecated. The AML disassembler will always disassemble to the new
1327 names. Support for the new macros was added to iASL, disassembler,
1328 resource manager, and the acpihelp utility. ACPICA BZ 1274.
1330 I2cSerialBus -> I2cSerialBusV2
1331 SpiSerialBus -> SpiSerialBusV2
1332 UartSerialBus -> UartSerialBusV2
1334 ACPI 6.0: Added support for a new integer field that was appended to the
1335 package object returned by the _BIX method. This adds iASL compile-time
1336 and AML runtime error checking. ACPICA BZ 1273.
1338 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
1339 Subspace Type2" (Headers, Disassembler, and data table compiler).
1341 Example Code and Data Size: These are the sizes for the OS-independent
1342 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1343 debug version of the code includes the debug output trace mechanism and
1344 has a much larger code and data size.
1347 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1348 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1350 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1351 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1354 2) iASL Compiler/Disassembler and Tools:
1356 iASL: Implemented an ASL grammar extension to allow/enable executable
1357 "module-level code" to be created and executed under the various
1358 operators that create new scopes. This type of AML code is already
1359 supported in all known AML interpreters, and the grammar change will
1360 appear in the next version of the ACPI specification. Simplifies the
1361 conditional runtime creation of named objects under these object types:
1369 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
1370 ease-of-use to the ASL language. The syntax is similar to the
1371 corresponding C operator, and is implemented with the existing AML While
1372 opcode -- thus requiring no changes to existing AML interpreters.
1374 For (Initialize, Predicate, Update) {TermList}
1379 Initializer // Nothing | TermArg => ComputationalData
1380 Predicate // Nothing | TermArg => ComputationalData
1381 Update // Nothing | TermArg => ComputationalData
1385 iASL: The _HID/_ADR detection and validation has been enhanced to search
1386 under conditionals in order to allow these objects to be conditionally
1389 iASL: Fixed several issues with the constant folding feature. The
1390 improvement allows better detection and resolution of statements that can
1391 be folded at compile time. ACPICA BZ 1266.
1393 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
1394 conversion to the ASL ElseIf operator where incorrect ASL code could be
1397 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
1398 sometimes an extra (and extraneous) set of parentheses were emitted for
1399 some combinations of operators. Although this did not cause any problems
1400 with recompilation of the disassembled code, it made the code more
1401 difficult to read. David Box. ACPICA BZ 1231.
1403 iASL: Changed to ignore the unreferenced detection for predefined names
1404 of resource descriptor elements, when the resource descriptor is
1405 created/defined within a control method.
1407 iASL: Disassembler: Fix a possible fault with externally declared Buffer
1410 ----------------------------------------
1411 18 March 2016. Summary of changes for version 20160318:
1413 1) ACPICA kernel-resident subsystem:
1415 Added support for arbitrary bit lengths and bit offsets for registers
1416 defined by the Generic Address Structure. Previously, only aligned bit
1417 lengths of 8/16/32/64 were supported. This was sufficient for many years,
1418 but recently some machines have been seen that require arbitrary bit-
1419 level support. ACPICA BZ 1240. Lv Zheng.
1421 Fixed an issue where the \_SB._INI method sometimes must be evaluated
1422 before any _REG methods are evaluated. Lv Zheng.
1424 Implemented several changes related to ACPI table support
1425 (Headers/Disassembler/TableCompiler):
1426 NFIT: For ACPI 6.1, updated to add some additional new fields and
1428 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
1430 DMAR: Added new constants per the 10/2014 DMAR spec.
1431 IORT: Added new subtable per the 10/2015 IORT spec.
1432 HEST: For ACPI 6.1, added new constants and new subtable.
1433 DBG2: Added new constants per the 12/2015 DBG2 spec.
1434 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
1436 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
1438 Updated header support for the DMAR table to match the current version of
1441 Added extensions to the ASL Concatenate operator to allow any ACPI object
1442 to be passed as an operand. Any object other than Integer/String/Buffer
1443 simply returns a string containing the object type. This extends the
1444 usefulness of the Printf macros. Previously, Concatenate would abort the
1445 control method if a non-data object was encountered.
1447 ACPICA source code: Deployed the C "const" keyword across the source code
1448 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
1450 Example Code and Data Size: These are the sizes for the OS-independent
1451 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1452 debug version of the code includes the debug output trace mechanism and
1453 has a much larger code and data size.
1456 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1457 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1459 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1460 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1463 2) iASL Compiler/Disassembler and Tools:
1465 iASL/Disassembler: Improved the heuristic used to determine the number of
1466 arguments for an externally defined control method (a method in another
1467 table). Although this is an improvement, there is no deterministic way to
1468 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1469 will completely solve this problem as it is deployed (automatically) in
1472 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1473 statements that could cause errors when the disassembled file is
1474 compiled. ACPICA BZ 1243. David Box.
1476 iASL: Fixed a regression caused by the merger of the two versions of the
1477 local strtoul64. Because of a dependency on a global variable, strtoul64
1478 could return an error for integers greater than a 32-bit value. ACPICA BZ
1481 iASL: Fixed a regression where a fault could occur for an ASL Return
1482 statement if it invokes a control method that is not resolved. ACPICA BZ
1485 AcpiXtract: Improved input file validation: detection of binary files and
1486 non-acpidump text files.
1488 ----------------------------------------
1489 12 February 2016. Summary of changes for version 20160212:
1491 1) ACPICA kernel-resident subsystem:
1493 Implemented full support for the ACPI 6.1 specification (released in
1494 January). This version of the specification is available at:
1495 http://www.uefi.org/specifications
1497 Only a relatively small number of changes were required in ACPICA to
1498 support ACPI 6.1, in these areas:
1499 - New predefined names
1501 - A new subtable for HEST
1502 - A few other header changes for new values
1504 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1505 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1507 Reverted a change made in version 20151218 which enabled method
1508 invocations to be targets of various ASL operators (SuperName and Target
1509 grammar elements). While the new behavior is supported by the ACPI
1510 specification, other AML interpreters do not support this behavior and
1511 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1512 this support. Therefore, the change was reverted to the original ACPICA
1515 ACPICA now supports the GCC 6 compiler.
1517 Current Release: (Note: build changes increased sizes)
1518 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1519 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1521 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1522 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1525 2) iASL Compiler/Disassembler and Tools:
1527 Completed full support for the ACPI 6.0 External() AML opcode. The
1528 compiler emits an external AML opcode for each ASL External statement.
1529 This opcode is used by the disassembler to assist with the disassembly of
1530 external control methods by specifying the required number of arguments
1531 for the method. AML interpreters do not use this opcode. To ensure that
1532 interpreters do not even see the opcode, a block of one or more external
1533 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1534 commonly deployed in BIOS code, the ability of disassemblers to correctly
1535 disassemble AML code will be greatly improved. David Box.
1537 iASL: Implemented support for an optional cross-reference output file.
1538 The -lx option will create a the cross-reference file with the suffix
1539 "xrf". Three different types of cross-reference are created in this file:
1540 - List of object references made from within each control method
1541 - Invocation (caller) list for each user-defined control method
1542 - List of references to each non-method object in the namespace
1544 iASL: Method invocations as ASL Target operands are now disallowed and
1545 flagged as errors in preparation for ACPI 6.2 (see the description of the
1548 ----------------------------------------
1549 8 January 2016. Summary of changes for version 20160108:
1551 1) ACPICA kernel-resident subsystem:
1553 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1554 copyright to all source code module headers and utility/tool signons.
1555 This includes the standard Linux dual-license header. This affects
1556 virtually every file in the ACPICA core subsystem, iASL compiler, all
1557 ACPICA utilities, and the ACPICA test suite.
1559 Fixed a regression introduced in version 20151218 concerning the
1560 execution of so-called module-level ASL/AML code. Namespace objects
1561 created under a module-level If() construct were not properly/fully
1562 entered into the namespace and could cause an interpreter fault when
1565 Example Code and Data Size: These are the sizes for the OS-independent
1566 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1567 debug version of the code includes the debug output trace mechanism and
1568 has a much larger code and data size.
1571 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1572 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1574 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1575 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1578 2) iASL Compiler/Disassembler and Tools:
1580 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1581 descriptors. The _PIN field name was incorrectly defined to be an array
1582 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1583 would cause incorrect bit width warnings when using Word (16-bit) fields
1584 to access the descriptors.
1587 ----------------------------------------
1588 18 December 2015. Summary of changes for version 20151218:
1590 1) ACPICA kernel-resident subsystem:
1592 Implemented per-AML-table execution of "module-level code" as individual
1593 ACPI tables are loaded into the namespace during ACPICA initialization.
1594 In other words, any module-level code within an AML table is executed
1595 immediately after the table is loaded, instead of batched and executed
1596 after all of the tables have been loaded. This provides compatibility
1597 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1600 To fully support the feature above, the default operation region handlers
1601 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1602 installed before any ACPI tables are loaded. This enables module-level
1603 code to access these address spaces during the table load and module-
1604 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1607 Implemented several changes to the internal _REG support in conjunction
1608 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1609 utilities for the changes above. Although these tools were changed, host
1610 operating systems that simply use the default handlers for SystemMemory,
1611 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1613 For example, in the code below, DEV1 is conditionally added to the
1614 namespace by the DSDT via module-level code that accesses an operation
1615 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1616 created immediately after the DSDT is loaded in order for the SSDT to
1617 successfully reference DEV1. Previously, this code would cause an
1618 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1619 fully supported by ACPICA.
1621 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1623 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1624 Field (OPR1, AnyAcc, NoLock, Preserve)
1635 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1637 External (\DEV1, DeviceObj)
1643 Fixed an AML interpreter problem where control method invocations were
1644 not handled correctly when the invocation was itself a SuperName argument
1645 to another ASL operator. In these cases, the method was not invoked.
1646 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1651 Decrement, Increment
1654 Signal, Release, Reset
1657 Implemented automatic String-to-ObjectReference conversion support for
1658 packages returned by predefined names (such as _DEP). A common BIOS error
1659 is to add double quotes around an ObjectReference namepath, which turns
1660 the reference into an unexpected string object. This support detects the
1661 problem and corrects it before the package is returned to the caller that
1662 invoked the method. Lv Zheng.
1664 Implemented extensions to the Concatenate operator. Concatenate now
1665 accepts any type of object, it is not restricted to simply
1666 Integer/String/Buffer. For objects other than these 3 basic data types,
1667 the argument is treated as a string containing the name of the object
1668 type. This expands the utility of Concatenate and the Printf/Fprintf
1669 macros. ACPICA BZ 1222.
1671 Cleaned up the output of the ASL Debug object. The timer() value is now
1672 optional and no longer emitted by default. Also, the basic data types of
1673 Integer/String/Buffer are simply emitted as their values, without a data
1674 type string -- since the data type is obvious from the output. ACPICA BZ
1677 Example Code and Data Size: These are the sizes for the OS-independent
1678 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1679 debug version of the code includes the debug output trace mechanism and
1680 has a much larger code and data size.
1683 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1684 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1686 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1687 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1690 2) iASL Compiler/Disassembler and Tools:
1692 iASL: Fixed some issues with the ASL Include() operator. This operator
1693 was incorrectly defined in the iASL parser rules, causing a new scope to
1694 be opened for the code within the include file. This could lead to
1695 several issues, including allowing ASL code that is technically illegal
1696 and not supported by AML interpreters. Note, this does not affect the
1697 related #include preprocessor operator. ACPICA BZ 1212.
1699 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1700 operator is essentially an ASL macro since there is no AML opcode
1701 associated with it. The code emitted by the iASL compiler for ElseIf is
1702 an Else opcode followed immediately by an If opcode. The disassembler
1703 will now emit an ElseIf if it finds an Else immediately followed by an
1704 If. This simplifies the decoded ASL, especially for deeply nested
1705 If..Else and large Switch constructs. Thus, the disassembled code more
1706 closely follows the original source ASL. ACPICA BZ 1211. Example:
1718 ElseIf (Arg0 == 0x02)
1723 AcpiExec: Added support for the new module level code behavior and the
1724 early region installation. This required a small change to the
1725 initialization, since AcpiExec must install its own operation region
1728 AcpiExec: Added support to make the debug object timer optional. Default
1729 is timer disabled. This cleans up the debug object output -- the timer
1730 data is rarely used.
1732 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1733 appear on the command line. This can be important when there are
1734 interdependencies/references between the tables.
1736 iASL/Templates. Add support to generate template files with multiple
1737 SSDTs within a single output file. Also added ommand line support to
1738 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1742 ----------------------------------------
1743 24 November 2015. Summary of changes for version 20151124:
1745 1) ACPICA kernel-resident subsystem:
1747 Fixed a possible regression for a previous update to FADT handling. The
1748 FADT no longer has a fixed table ID, causing some issues with code that
1749 was hardwired to a specific ID. Lv Zheng.
1751 Fixed a problem where the method auto-serialization could interfere with
1752 the current SyncLevel. This change makes the auto-serialization support
1753 transparent to the SyncLevel support and management.
1755 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1756 interface is intended for early access to the namespace during the
1757 initial namespace device discovery walk. The _SUB method has been seen to
1758 access operation regions in some cases, causing errors because the
1759 operation regions are not fully initialized.
1761 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1762 that can cause faults. Lv Zheng.
1764 AML Debugger: Add thread ID support so that single-step mode only applies
1765 to the AML Debugger thread. This prevents runtime errors within some
1768 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1769 methods that are invoked by this interface are optional, removed warnings
1770 emitted for the case where one or more of these methods do not exist.
1771 ACPICA BZ 1208, original change by Prarit Bhargava.
1773 Made a major pass through the entire ACPICA source code base to
1774 standardize formatting that has diverged a bit over time. There are no
1775 functional changes, but this will of course cause quite a few code
1776 differences from the previous ACPICA release.
1778 Example Code and Data Size: These are the sizes for the OS-independent
1779 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1780 debug version of the code includes the debug output trace mechanism and
1781 has a much larger code and data size.
1784 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1785 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1787 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1788 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1791 2) iASL Compiler/Disassembler and Tools:
1793 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1794 definition blocks within a single ASL file and the resulting AML file.
1795 Support for this type of file was also added to the various tools that
1796 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1797 example code below shows two definition blocks within the same file:
1799 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1803 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1807 iASL: Enhanced typechecking for the Name() operator. All expressions for
1808 the value of the named object must be reduced/folded to a single constant
1809 at compile time, as per the ACPI specification (the AML definition of
1812 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1813 and assembly headers). Now all emitted code correctly begins in column 1.
1815 iASL: Added an error message for an attempt to open a Scope() on an
1816 object defined in an SSDT. The DSDT is always loaded into the namespace
1817 first, so any attempt to open a Scope on an SSDT object will fail at
1821 ----------------------------------------
1822 30 September 2015. Summary of changes for version 20150930:
1824 1) ACPICA kernel-resident subsystem:
1826 Debugger: Implemented several changes and bug fixes to assist support for
1827 the in-kernel version of the AML debugger. Lv Zheng.
1828 - Fix the "predefined" command for in-kernel debugger.
1829 - Do not enter debug command loop for the help and version commands.
1830 - Disallow "execute" command during execution/single-step of a method.
1832 Interpreter: Updated runtime typechecking for all operators that have
1833 target operands. The operand is resolved and validated that it is legal.
1834 For example, the target cannot be a non-data object such as a Device,
1835 Mutex, ThermalZone, etc., as per the ACPI specification.
1837 Debugger: Fixed the double-mutex user I/O handshake to work when local
1838 deadlock detection is enabled.
1840 Debugger: limited display of method locals and arguments (LocalX and
1841 ArgX) to only those that have actually been initialized. This prevents
1842 lines of extraneous output.
1844 Updated the definition of the NFIT table to correct the bit polarity of
1845 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1847 Example Code and Data Size: These are the sizes for the OS-independent
1848 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1849 debug version of the code includes the debug output trace mechanism and
1850 has a much larger code and data size.
1853 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1854 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1856 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1857 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1860 2) iASL Compiler/Disassembler and Tools:
1862 iASL: Improved the compile-time typechecking for operands of many of the
1865 -- Added an option to disable compiler operand/operator typechecking (-
1868 -- For the following operators, the TermArg operands are now validated
1869 when possible to be Integer data objects: BankField, OperationRegion,
1870 DataTableRegion, Buffer, and Package.
1872 -- Store (Source, Target): Both the source and target operands are
1873 resolved and checked that the operands are both legal. For example,
1874 neither operand can be a non-data object such as a Device, Mutex,
1875 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1876 operator can be used to store an object to any type of target object.
1878 -- Store (Source, Target): If the source is a Package object, the target
1879 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1880 is a Package, the source must also be a Package.
1882 -- Store (Source, Target): A warning is issued if the source and target
1883 resolve to the identical named object.
1885 -- Store (Source, <method invocation>): An error is generated for the
1886 target method invocation, as this construct is not supported by the AML
1889 -- For all ASL math and logic operators, the target operand must be a
1890 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1891 includes the function return value also.
1893 -- External declarations are also included in the typechecking where
1894 possible. External objects defined using the UnknownObj keyword cannot be
1895 typechecked, however.
1897 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1899 - Legacy code: Index(PKG1, 3)
1900 - New ASL+ code: PKG1[3]
1901 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1904 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1905 spaces were inadvertently appended to the filename, causing file access
1906 and deletion problems on some systems.
1908 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1909 possible compiler output files when building the test suite -- thus
1910 exercising these features of the compiler. These files are automatically
1911 deleted when the test suite exits.
1914 ----------------------------------------
1915 18 August 2015. Summary of changes for version 20150818:
1917 1) ACPICA kernel-resident subsystem:
1919 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1920 Zheng. ACPICA BZ 1186.
1922 Completed development to ensure that the ACPICA Disassembler and Debugger
1923 are fully standalone components of ACPICA. Removed cross-component
1924 dependences. Lv Zheng.
1926 The max-number-of-AML-loops is now runtime configurable (previously was
1927 compile-time only). This is essentially a loop timeout to force-abort
1928 infinite AML loops. ACPCIA BZ 1192.
1930 Debugger: Cleanup output to dump ACPI names and namepaths without any
1931 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1933 Removed unnecessary conditional compilations across the Debugger and
1934 Disassembler components where entire modules could be left uncompiled.
1936 The aapits test is deprecated and has been removed from the ACPICA git
1937 tree. The test has never been completed and has not been maintained, thus
1938 becoming rather useless. ACPICA BZ 1015, 794.
1940 A batch of small changes to close bugzilla and other reports:
1941 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1942 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1943 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1944 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1946 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1948 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1950 - Debugger: Split debugger initialization/termination interfaces. Lv
1952 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1954 - AcpiExec: Add debug message during _REG method phase during table
1956 - AcpiNames: Fix a regression where some output was missing and no longer
1958 - Debugger: General cleanup and simplification. Lv Zheng.
1959 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1961 Example Code and Data Size: These are the sizes for the OS-independent
1962 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1963 debug version of the code includes the debug output trace mechanism and
1964 has a much larger code and data size.
1967 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1968 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1970 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1971 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1974 2) iASL Compiler/Disassembler and Tools:
1976 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1977 were not handled properly and caused load errors. Now, properly invoke
1978 and use the ACPICA auto-reallocate mechanism for ACPI table data
1979 structures. ACPICA BZ 1188
1981 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1984 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1985 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1986 executed during initialization. ACPICA BZ 1187, 1189.
1988 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1989 that corresponds to each disassembled ASL statement, to simplify
1990 debugging. ACPICA BZ 1191.
1992 Debugger: Add option to the "objects" command to display a summary of the
1993 current namespace objects (Object type and count). This is displayed if
1994 the command is entered with no arguments.
1996 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1999 ----------------------------------------
2000 17 July 2015. Summary of changes for version 20150717:
2002 1) ACPICA kernel-resident subsystem:
2004 Improved the partitioning between the Debugger and Disassembler
2005 components. This allows the Debugger to be used standalone within kernel
2006 code without the Disassembler (which is used for single stepping also).
2007 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
2009 Debugger: Implemented a new command to trace the execution of control
2010 methods (Trace). This is especially useful for the in-kernel version of
2011 the debugger when file I/O may not be available for method trace output.
2012 See the ACPICA reference for more information. Lv Zheng.
2014 Moved all C library prototypes (used for the local versions of these
2015 functions when requested) to a new header, acclib.h
2016 Cleaned up the use of non-ANSI C library functions. These functions are
2017 implemented locally in ACPICA. Moved all such functions to a common
2018 source file, utnonansi.c
2020 Debugger: Fixed a problem with the "!!" command (get last command
2021 executed) where the debugger could enter an infinite loop and eventually
2024 Removed the use of local macros that were used for some of the standard C
2025 library functions to automatically cast input parameters. This mostly
2026 affected the is* functions where the input parameter is defined to be an
2027 int. This required a few modifications to the main ACPICA source code to
2028 provide casting for these functions and eliminate possible compiler
2029 warnings for these parameters.
2031 Across the source code, added additional status/error checking to resolve
2032 issues discovered by static source code analysis tools such as Coverity.
2034 Example Code and Data Size: These are the sizes for the OS-independent
2035 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2036 debug version of the code includes the debug output trace mechanism and
2037 has a much larger code and data size.
2040 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
2041 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
2043 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2044 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2047 2) iASL Compiler/Disassembler and Tools:
2049 iASL: Fixed a regression where the device map file feature no longer
2050 worked properly when used in conjunction with the disassembler. It only
2051 worked properly with the compiler itself.
2053 iASL: Implemented a new warning for method LocalX variables that are set
2054 but never used (similar to a C compiler such as gcc). This also applies
2055 to ArgX variables that are not defined by the parent method, and are
2056 instead (legally) used as local variables.
2058 iASL/Preprocessor: Finished the pass-through of line numbers from the
2059 preprocessor to the compiler. This ensures that compiler errors/warnings
2060 have the correct original line numbers and filenames, regardless of any
2063 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
2064 pass-through of comments to the preprocessor output file (which becomes
2065 the compiler input file). Also fixed a problem with // comments that
2066 appear after a math expression.
2068 iASL: Added support for the TCPA server table to the table compiler and
2069 template generator. (The client table was already previously supported)
2071 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
2072 identify the iASL compiler.
2074 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
2075 multiple times. The new names are ACPI_SIGN_NEGATIVE and
2078 AcpiHelp: Update to expand help messages for the iASL preprocessor
2082 ----------------------------------------
2083 19 June 2015. Summary of changes for version 20150619:
2085 Two regressions in version 20150616 have been addressed:
2087 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
2088 etc.) This update changes ACPICA to only use the standard headers for
2089 functions, or the prototypes for the local versions of the C library
2090 functions. Across the source code, this required some additional casts
2091 for some Clib invocations for portability. Moved all local prototypes to
2092 a new file, acclib.h
2094 Fixes several problems with recent changes to the handling of the FACS
2095 table that could cause some systems not to boot.
2098 ----------------------------------------
2099 16 June 2015. Summary of changes for version 20150616:
2102 1) ACPICA kernel-resident subsystem:
2104 Across the entire ACPICA source code base, the various macros for the C
2105 library functions (such as ACPI_STRLEN, etc.) have been removed and
2106 replaced by the standard C library names (strlen, etc.) The original
2107 purpose for these macros is no longer applicable. This simplification
2108 reduces the number of macros used in the ACPICA source code
2109 significantly, improving readability and maintainability.
2111 Implemented support for a new ACPI table, the OSDT. This table, the
2112 "override" SDT, can be loaded directly by the host OS at boot time. It
2113 enables the replacement of existing namespace objects that were installed
2114 via the DSDT and/or SSDTs. The primary purpose for this is to replace
2115 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
2116 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
2119 Added support for systems with (improperly) two FACS tables -- a "32-bit"
2120 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
2121 X field). This change will support both automatically. There continues to
2122 be systems found with this issue. This support requires a change to the
2123 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
2124 been added to allow the host to select which FACS is desired
2125 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
2128 Added a new feature to allow for systems that do not contain an FACS.
2129 Although this is already supported on hardware-reduced platforms, the
2130 feature has been extended for all platforms. The reasoning is that we do
2131 not want to abort the entire ACPICA initialization just because the
2132 system is seriously buggy and has no FACS.
2134 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
2135 not correctly transcribed from the ACPI specification in ACPICA version
2138 Implemented support for the _CLS object in the AcpiGetObjectInfo external
2141 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
2142 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
2143 compiler also updated. Note: The TCPA "server" table is not supported by
2144 the disassembler/table-compiler at this time.
2146 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
2148 Example Code and Data Size: These are the sizes for the OS-independent
2149 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2150 debug version of the code includes the debug output trace mechanism and
2151 has a much larger code and data size.
2154 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
2155 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2157 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2158 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2161 2) iASL Compiler/Disassembler and Tools:
2163 Disassembler: Fixed a problem with the new symbolic operator disassembler
2164 where incorrect ASL code could be emitted in some cases for the "non-
2165 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
2166 ShiftRight. The actual problem cases seem to be rather unusual in common
2167 ASL code, however. David Box.
2169 Modified the linux version of acpidump to obtain ACPI tables from not
2170 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
2173 iASL: Fixed a problem where the user preprocessor output file (.i)
2174 contained extra data that was not expected. The compiler was using this
2175 file as a temporary file and passed through #line directives in order to
2176 keep compiler error messages in sync with the input file and line number
2177 across multiple include files. The (.i) is no longer a temporary file as
2178 the compiler uses a new, different file for the original purpose.
2180 iASL: Fixed a problem where comments within the original ASL source code
2181 file were not passed through to the preprocessor output file, nor any
2184 iASL: Fixed some issues for the handling of the "#include" preprocessor
2185 directive and the similar (but not the same) "Include" ASL operator.
2187 iASL: Add support for the new OSDT in both the disassembler and compiler.
2189 iASL: Fixed a problem with the constant folding support where a Buffer
2190 object could be incorrectly generated (incorrectly formed) during a
2191 conversion to a Store() operator.
2193 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
2194 description text for the _REV predefined name. _REV now permanently
2195 returns 2, as per the ACPI 6.0 specification.
2197 Debugger: Enhanced the output of the Debug ASL object for references
2198 produced by the Index operator. For Buffers and strings, only output the
2199 actual byte pointed to by the index. For packages, only print the single
2200 package element decoded by the index. Previously, the entire
2201 buffer/string/package was emitted.
2203 iASL/Table-compiler: Fixed a regression where the "generic" data types
2204 were no longer recognized, causing errors.
2207 ----------------------------------------
2208 15 May 2015. Summary of changes for version 20150515:
2210 This release implements most of ACPI 6.0 as described below.
2212 1) ACPICA kernel-resident subsystem:
2214 Implemented runtime argument checking and return value checking for all
2215 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
2216 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
2218 Example Code and Data Size: These are the sizes for the OS-independent
2219 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2220 debug version of the code includes the debug output trace mechanism and
2221 has a much larger code and data size.
2224 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2225 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2227 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2228 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2231 2) iASL Compiler/Disassembler and Tools:
2233 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
2234 names (argument count validation and return value typechecking.)
2236 iASL disassembler and table compiler: implemented support for all new
2237 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
2239 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
2242 iASL preprocessor: Added a new directive to enable inclusion of binary
2243 blobs into ASL code. The new directive is #includebuffer. It takes a
2244 binary file as input and emits a named ascii buffer object into the ASL
2247 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
2249 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
2252 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
2256 ----------------------------------------
2257 10 April 2015. Summary of changes for version 20150410:
2259 Reverted a change introduced in version 20150408 that caused
2260 a regression in the disassembler where incorrect operator
2261 symbols could be emitted.
2264 ----------------------------------------
2265 08 April 2015. Summary of changes for version 20150408:
2268 1) ACPICA kernel-resident subsystem:
2270 Permanently set the return value for the _REV predefined name. It now
2271 returns 2 (was 5). This matches other ACPI implementations. _REV will be
2272 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
2273 for ACPI 2.0 and later. It should never be used to differentiate or
2274 identify operating systems.
2276 Added the "Windows 2015" string to the _OSI support. ACPICA will now
2277 return TRUE to a query with this string.
2279 Fixed several issues with the local version of the printf function.
2281 Added the C99 compiler option (-std=c99) to the Unix makefiles.
2284 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
2285 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
2287 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2288 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2291 2) iASL Compiler/Disassembler and Tools:
2293 iASL: Implemented an enhancement to the constant folding feature to
2294 transform the parse tree to a simple Store operation whenever possible:
2295 Add (2, 3, X) ==> is converted to: Store (5, X)
2296 X = 2 + 3 ==> is converted to: Store (5, X)
2298 Updated support for the SLIC table (Software Licensing Description Table)
2299 in both the Data Table compiler and the disassembler. The SLIC table
2300 support now conforms to "Microsoft Software Licensing Tables (SLIC and
2301 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
2302 following the ACPI header is now defined to be "Proprietary Data", and as
2303 such, can only be entered or displayed as a hex data block.
2305 Implemented full support for the MSDM table as described in the document
2306 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
2307 following the ACPI header is defined to be "Proprietary Data", and can
2308 only be entered or displayed as a hex data block.
2310 Implemented the -Pn option for the iASL Table Compiler (was only
2311 implemented for the ASL compiler). This option disables the iASL
2314 Disassembler: For disassembly of Data Tables, added a comment field
2315 around the Ascii equivalent data that is emitted as part of the "Raw
2316 Table Data" block. This prevents the iASL Preprocessor from possible
2317 confusion if/when the table is compiled.
2319 Disassembler: Added an option (-df) to force the disassembler to assume
2320 that the table being disassembled contains valid AML. This feature is
2321 useful for disassembling AML files that contain ACPI signatures other
2322 than DSDT or SSDT (such as OEMx or other signatures).
2324 Changes for the EFI version of the tools:
2325 1) Fixed a build error/issue
2326 2) Fixed a cast warning
2328 iASL: Fixed a path issue with the __FILE__ operator by making the
2329 directory prefix optional within the internal SplitInputFilename
2332 Debugger: Removed some unused global variables.
2334 Tests: Updated the makefile for proper generation of the AAPITS suite.
2337 ----------------------------------------
2338 04 February 2015. Summary of changes for version 20150204:
2340 ACPICA kernel-resident subsystem:
2342 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2343 copyright to all module headers and signons, including the standard Linux
2344 header. This affects virtually every file in the ACPICA core subsystem,
2345 iASL compiler, all ACPICA utilities, and the test suites.
2347 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
2348 A raw gpe handling mechanism was created to allow better handling of GPE
2349 storms that aren't easily managed by the normal handler. The raw handler
2350 allows disabling/renabling of the the GPE so that interrupt storms can be
2351 avoided in cases where events cannot be timely serviced. In this
2352 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
2353 GPE. This API will leave the reference counts undisturbed, thereby
2354 preventing unintentional clearing of the GPE when the intent in only to
2355 temporarily disable it. Raw handlers allow enabling and disabling of a
2356 GPE by removing GPE register locking. As such, raw handlers much provide
2357 their own locks while using GPE API's to protect access to GPE data
2361 Events: Always modify GPE registers under the GPE lock.
2362 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
2363 values. Reported as bug by joe.liu@apple.com.
2365 Unix makefiles: Separate option to disable optimizations and
2366 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
2367 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
2368 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
2369 errors when building ACPICA. This allows disabling the option without
2370 also having to disable optimazations.
2374 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2375 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
2378 --------------------------------------
2379 07 November 2014. Summary of changes for version 20141107:
2381 This release is available at https://acpica.org/downloads
2383 This release introduces and implements language extensions to ASL that
2384 provide support for symbolic ("C-style") operators and expressions. These
2385 language extensions are known collectively as ASL+.
2388 1) iASL Compiler/Disassembler and Tools:
2390 Disassembler: Fixed a problem with disassembly of the UartSerialBus
2391 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
2394 Disassembler: Fixed the Unicode macro support to add escape sequences.
2395 All non-printable ASCII values are emitted as escape sequences, as well
2396 as the standard escapes for quote and backslash. Ensures that the
2397 disassembled macro can be correctly recompiled.
2399 iASL: Added Printf/Fprintf macros for formatted output. These macros are
2400 translated to existing AML Concatenate and Store operations. Printf
2401 writes to the ASL Debug object. Fprintf allows the specification of an
2402 ASL name as the target. Only a single format specifier is required, %o,
2403 since the AML interpreter dynamically converts objects to the required
2406 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2407 (Concatenate (Concatenate (Concatenate ("", Arg0),
2408 ": Unexpected value for "), Arg1), ", "), Arg2),
2409 " at line "), Arg3), Debug)
2411 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
2412 Arg0, Arg1, Arg2, Arg3)
2414 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2415 ("", Arg1), ": "), Arg0), " Successful"), STR1)
2417 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
2419 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
2420 ASL parse tree before the AML code is generated. This allows blocks of
2421 ASL code to be removed in order to help locate and identify problem
2422 devices and/or code. David E. Box.
2424 AcpiExec: Added support (-fi) for an optional namespace object
2425 initialization file. This file specifies initial values for namespace
2426 objects as necessary for debugging and testing different ASL code paths
2427 that may be taken as a result of BIOS options.
2430 2) Overview of symbolic operator support for ASL (ASL+)
2431 -------------------------------------------------------
2433 As an extension to the ASL language, iASL implements support for symbolic
2434 (C-style) operators for math and logical expressions. This can greatly
2435 simplify ASL code as well as improve both readability and
2436 maintainability. These language extensions can exist concurrently with
2437 all legacy ASL code and expressions.
2439 The symbolic extensions are 100% compatible with existing AML
2440 interpreters, since no new AML opcodes are created. To implement the
2441 extensions, the iASL compiler transforms the symbolic expressions into
2442 the legacy ASL/AML equivalents at compile time.
2444 Full symbolic expressions are supported, along with the standard C
2445 precedence and associativity rules.
2447 Full disassembler support for the symbolic expressions is provided, and
2448 creates an automatic migration path for existing ASL code to ASL+ code
2449 via the disassembly process. By default, the disassembler now emits ASL+
2450 code with symbolic expressions. An option (-dl) is provided to force the
2451 disassembler to emit legacy ASL code if desired.
2453 Below is the complete list of the currently supported symbolic operators
2454 with examples. See the iASL User Guide for additional information.
2457 ASL+ Syntax Legacy ASL Equivalent
2458 ----------- ---------------------
2462 Z = X + Y Add (X, Y, Z)
2463 Z = X - Y Subtract (X, Y, Z)
2464 Z = X * Y Multiply (X, Y, Z)
2465 Z = X / Y Divide (X, Y, , Z)
2466 Z = X % Y Mod (X, Y, Z)
2467 Z = X << Y ShiftLeft (X, Y, Z)
2468 Z = X >> Y ShiftRight (X, Y, Z)
2469 Z = X & Y And (X, Y, Z)
2470 Z = X | Y Or (X, Y, Z)
2471 Z = X ^ Y Xor (X, Y, Z)
2476 // Logical operators
2478 (X == Y) LEqual (X, Y)
2479 (X != Y) LNotEqual (X, Y)
2480 (X < Y) LLess (X, Y)
2481 (X > Y) LGreater (X, Y)
2482 (X <= Y) LLessEqual (X, Y)
2483 (X >= Y) LGreaterEqual (X, Y)
2484 (X && Y) LAnd (X, Y)
2488 // Assignment and compound assignment operations
2491 X += Y Add (X, Y, X)
2492 X -= Y Subtract (X, Y, X)
2493 X *= Y Multiply (X, Y, X)
2494 X /= Y Divide (X, Y, , X)
2495 X %= Y Mod (X, Y, X)
2496 X <<= Y ShiftLeft (X, Y, X)
2497 X >>= Y ShiftRight (X, Y, X)
2498 X &= Y And (X, Y, X)
2500 X ^= Y Xor (X, Y, X)
2507 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2508 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2510 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2512 And (MEMB, 0xFFFFFFF0, SRMB)
2513 Store (MEMB, Local2)
2514 Store (PDBM, Local1)
2515 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2517 Or (PDBM, 0x02, PDBM)
2521 If (((R510 & 0x03FB) == 0x02E0) ||
2522 ((R520 & 0x03FB) == 0x02E0) ||
2523 ((R530 & 0x03FB) == 0x02E0) ||
2524 ((R540 & 0x03FB) == 0x02E0))
2526 SRMB = (MEMB & 0xFFFFFFF0)
2529 PDBM &= 0xFFFFFFFFFFFFFFF9
2535 Store (0x1234, Local1)
2536 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2537 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2538 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2539 Store (Index (PKG1, 0x03), Local6)
2540 Store (Add (Local3, Local2), Debug)
2541 Add (Local1, 0x0F, Local2)
2542 Add (Local1, Multiply (Local2, Local3), Local2)
2543 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2547 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2548 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2549 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2550 Local6 = Index (PKG1, 0x03)
2551 Debug = (Local3 + Local2)
2552 Local2 = (Local1 + 0x0F)
2553 Local2 = (Local1 + (Local2 * Local3))
2554 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2557 ----------------------------------------
2558 26 September 2014. Summary of changes for version 20140926:
2560 1) ACPICA kernel-resident subsystem:
2562 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2563 In order to support GPIO Connection objects with multiple pins, along
2564 with the related Field objects, the following changes to the interface
2565 have been made: The Address is now defined to be the offset in bits of
2566 the field unit from the previous invocation of a Connection. It can be
2567 viewed as a "Pin Number Index" into the connection resource descriptor.
2568 The BitWidth is the exact bit width of the field. It is usually one bit,
2569 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2570 additional information and examples.
2572 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2573 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2574 by the firmware), so that they cannot fire until they are enabled via
2575 AcpiUpdateAllGpes. Rafael J. Wysocki.
2577 Added a new return flag for the Event/GPE status interfaces --
2578 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2579 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2580 GPE currently has a handler associated with it, and can thus actually
2581 affect the system. Lv Zheng.
2583 Example Code and Data Size: These are the sizes for the OS-independent
2584 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2585 debug version of the code includes the debug output trace mechanism and
2586 has a much larger code and data size.
2589 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2590 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2592 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2593 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2595 2) iASL Compiler/Disassembler and Tools:
2597 iASL: Fixed a memory allocation/free regression introduced in 20140828
2598 that could cause the compiler to crash. This was introduced inadvertently
2599 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2602 iASL: Removed two error messages that have been found to create false
2603 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2604 1) Illegal forward reference within a method
2605 2) Illegal reference across two methods
2607 iASL: Implemented a new option (-lm) to create a hardware mapping file
2608 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2609 works for both the compiler and disassembler. See the iASL compiler user
2610 guide for additional information and examples (section 6.4.6).
2612 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2613 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2614 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2616 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2617 unless STDIN is actually a terminal. Assists with batch-mode processing.
2620 Disassembler/AcpiHelp: Added another large group of recognized _HID
2624 ----------------------------------------
2625 28 August 2014. Summary of changes for version 20140828:
2627 1) ACPICA kernel-resident subsystem:
2629 Fixed a problem related to the internal use of the Timer() operator where
2630 a 64-bit divide could cause an attempted link to a double-precision math
2631 library. This divide is not actually necessary, so the code was
2632 restructured to eliminate it. Lv Zheng.
2634 ACPI 5.1: Added support for the runtime validation of the _DSD package
2635 (similar to the iASL support).
2637 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2638 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2640 Example Code and Data Size: These are the sizes for the OS-independent
2641 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2642 debug version of the code includes the debug output trace mechanism and
2643 has a much larger code and data size.
2646 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2647 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2649 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2650 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2652 2) iASL Compiler/Disassembler and Tools:
2654 AcpiExec: Fixed a problem on unix systems where the original terminal
2655 state was not always properly restored upon exit. Seen when using the -v
2656 option. ACPICA BZ 1104.
2658 iASL: Fixed a problem with the validation of the ranges/length within the
2659 Memory24 resource descriptor. There was a boundary condition when the
2660 range was equal to the (length -1) caused by the fact that these values
2661 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2663 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2665 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2667 now supported properly.
2669 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2670 in the disassembler, data table compiler, and table template generator.
2672 iASL: Added a requirement for Device() objects that one of either a _HID
2673 or _ADR must exist within the scope of a Device, as per the ACPI
2674 specification. Remove a similar requirement that was incorrectly in place
2675 for the _DSD object.
2677 iASL: Added error detection for illegal named references within control
2678 methods that would cause runtime failures. Now trapped as errors are: 1)
2679 References to objects within a non-parent control method. 2) Forward
2680 references (within a method) -- for control methods, AML interpreters use
2681 a one-pass parse of control methods. ACPICA BZ 1008.
2683 iASL: Added error checking for dependencies related to the _PSx power
2684 methods. ACPICA BZ 1029.
2685 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2687 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2690 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2691 deploying the existing object and string caches and adding new caches for
2694 iASL: Split the huge parser source file into multiple subfiles to improve
2695 manageability. Generation now requires the M4 macro preprocessor, which
2696 is part of the Bison distribution on both unix and windows platforms.
2698 AcpiSrc: Fixed and removed all extraneous warnings generated during
2699 entire ACPICA source code scan and/or conversion.
2702 ----------------------------------------
2704 24 July 2014. Summary of changes for version 20140724:
2706 The ACPI 5.1 specification has been released and is available at:
2707 http://uefi.org/specs/access
2710 0) ACPI 5.1 support in ACPICA:
2712 ACPI 5.1 is fully supported in ACPICA as of this release.
2714 New predefined names. Support includes iASL and runtime ACPICA
2716 _CCA (Cache Coherency Attribute).
2717 _DSD (Device-Specific Data). David Box.
2719 Modifications to existing ACPI tables. Support includes headers, iASL
2720 Data Table compiler, disassembler, and the template generator.
2721 FADT - New fields and flags. Graeme Gregory.
2722 GTDT - One new subtable and new fields. Tomasz Nowicki.
2723 MADT - Two new subtables. Tomasz Nowicki.
2724 PCCT - One new subtable.
2727 New notification type for System Resource Affinity change events.
2730 1) ACPICA kernel-resident subsystem:
2732 Fixed a regression introduced in 20140627 where a fault can happen during
2733 the deletion of Alias AML namespace objects. The problem affected both
2734 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2736 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2737 simple mechanism to enable wake GPEs that have no associated handler or
2738 control method. Rafael Wysocki.
2740 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2741 handler or control method associated with the particular GPE. This will
2742 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2744 Updated GPE handling and dispatch by disabling the GPE before clearing
2745 the status bit for edge-triggered GPEs. Lv Zheng.
2747 Added Timer() support to the AML Debug object. The current timer value is
2748 now displayed with each invocation of (Store to) the debug object to
2749 enable simple generation of execution times for AML code (method
2750 execution for example.) ACPICA BZ 1093.
2752 Example Code and Data Size: These are the sizes for the OS-independent
2753 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2754 debug version of the code includes the debug output trace mechanism and
2755 has a much larger code and data size.
2758 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2759 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2761 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2762 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2765 2) iASL Compiler/Disassembler and Tools:
2767 Fixed an issue with the recently added local printf implementation,
2768 concerning width/precision specifiers that could cause incorrect output.
2769 Lv Zheng. ACPICA BZ 1094.
2771 Disassembler: Added support to detect buffers that contain UUIDs and
2772 disassemble them to an invocation of the ToUUID operator. Also emit
2773 commented descriptions of known ACPI-related UUIDs.
2775 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2776 -u. Adds three new files.
2778 iASL: Update table compiler and disassembler for DMAR table changes that
2779 were introduced in September 2013. With assistance by David Woodhouse.
2781 ----------------------------------------
2782 27 June 2014. Summary of changes for version 20140627:
2784 1) ACPICA kernel-resident subsystem:
2786 Formatted Output: Implemented local versions of standard formatted output
2787 utilities such as printf, etc. Over time, it has been discovered that
2788 there are in fact many portability issues with printf, and the addition
2789 of this feature will fix/prevent these issues once and for all. Some
2790 known issues are summarized below:
2792 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2793 for the Linux kernel and is %uI64 for some MSVC versions.
2794 2) Invoking printf consistently in a manner that is portable across both
2795 32-bit and 64-bit platforms is difficult at best in many situations.
2796 3) The output format for pointers varies from system to system (leading
2797 zeros especially), and leads to inconsistent output from ACPICA across
2799 4) Certain platform-specific printf formats may conflict with ACPICA use.
2800 5) If there is no local C library available, ACPICA now has local support
2803 -- To address these printf issues in a complete manner, ACPICA now
2804 directly implements a small subset of printf format specifiers, only
2805 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2807 Implemented support for ACPICA generation within the EFI environment.
2808 Initially, the AcpiDump utility is supported in the UEFI shell
2809 environment. Lv Zheng.
2811 Added a new external interface, AcpiLogError, to improve ACPICA
2812 portability. This allows the host to redirect error messages from the
2813 ACPICA utilities. Lv Zheng.
2815 Added and deployed new OSL file I/O interfaces to improve ACPICA
2823 There are C library implementations of these functions in the new file
2824 service_layers/oslibcfs.c -- however, the functions can be implemented by
2825 the local host in any way necessary. Lv Zheng.
2827 Implemented a mechanism to disable/enable ACPI table checksum validation
2828 at runtime. This can be useful when loading tables very early during OS
2829 initialization when it may not be possible to map the entire table in
2830 order to compute the checksum. Lv Zheng.
2832 Fixed a buffer allocation issue for the Generic Serial Bus support.
2833 Originally, a fixed buffer length was used. This change allows for
2834 variable-length buffers based upon the protocol indicated by the field
2835 access attributes. Reported by Lan Tianyu. Lv Zheng.
2837 Fixed a problem where an object detached from a namespace node was not
2838 properly terminated/cleared and could cause a circular list problem if
2839 reattached. ACPICA BZ 1063. David Box.
2841 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2843 Fixed a possible memory leak in an error return path within the function
2844 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2846 Example Code and Data Size: These are the sizes for the OS-independent
2847 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2848 debug version of the code includes the debug output trace mechanism and
2849 has a much larger code and data size.
2852 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2853 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2855 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2856 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2859 2) iASL Compiler/Disassembler and Tools:
2861 Disassembler: Add dump of ASCII equivalent text within a comment at the
2862 end of each line of the output for the Buffer() ASL operator.
2864 AcpiDump: Miscellaneous changes:
2865 Fixed repetitive table dump in -n mode.
2866 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2867 the ACPI 2.0 GUID fails.
2869 iASL: Fixed a problem where the compiler could fault if incorrectly given
2870 an acpidump output file as input. ACPICA BZ 1088. David Box.
2872 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2873 they are invoked without any arguments.
2875 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2876 1086. Colin Ian King.
2878 Disassembler: Cleaned up a block of code that extracts a parent Op
2879 object. Added a comment that explains that the parent is guaranteed to be
2880 valid in this case. ACPICA BZ 1069.
2883 ----------------------------------------
2884 24 April 2014. Summary of changes for version 20140424:
2886 1) ACPICA kernel-resident subsystem:
2888 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2889 Some of these tables are known to contain a trailing NULL entry. Lv
2892 Removed an extraneous error message for the case where there are a large
2893 number of system GPEs (> 124). This was the "32-bit FADT register is too
2894 long to convert to GAS struct" message, which is irrelevant for GPEs
2895 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2896 (limited capacity) GAS bit length. Also, several changes to ensure proper
2897 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2900 Implemented and deployed additional configuration support for the public
2901 ACPICA external interfaces. Entire classes of interfaces can now be
2902 easily modified or configured out, replaced by stubbed inline functions
2903 by default. Lv Zheng.
2905 Moved all public ACPICA runtime configuration globals to the public
2906 ACPICA external interface file for convenience. Also, removed some
2907 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2909 Documentation: Added a new section to the ACPICA reference describing the
2910 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2911 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2914 Example Code and Data Size: These are the sizes for the OS-independent
2915 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2916 debug version of the code includes the debug output trace mechanism and
2917 has a much larger code and data size.
2920 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2921 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2923 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2924 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2927 2) iASL Compiler/Disassembler and Tools:
2929 iASL and disassembler: Add full support for the LPIT table (Low Power
2930 Idle Table). Includes support in the disassembler, data table compiler,
2931 and template generator.
2934 1) Add option to force the use of the RSDT (over the XSDT).
2935 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2937 iASL: Add check for predefined packages that are too large. For
2938 predefined names that contain subpackages, check if each subpackage is
2939 too large. (Check for too small already exists.)
2941 Debugger: Updated the GPE command (which simulates a GPE by executing the
2942 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2943 to the GPE 0/1 FADT-defined blocks.
2945 Unix application OSL: Update line-editing support. Add additional error
2946 checking and take care not to reset terminal attributes on exit if they
2947 were never set. This should help guarantee that the terminal is always
2948 left in the previous state on program exit.
2951 ----------------------------------------
2952 25 March 2014. Summary of changes for version 20140325:
2954 1) ACPICA kernel-resident subsystem:
2956 Updated the auto-serialize feature for control methods. This feature
2957 automatically serializes all methods that create named objects in order
2958 to prevent runtime errors. The update adds support to ignore the
2959 currently executing AML SyncLevel when invoking such a method, in order
2960 to prevent disruption of any existing SyncLevel priorities that may exist
2961 in the AML code. Although the use of SyncLevels is relatively rare, this
2962 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2963 appear on some machines starting with the 20140214 release.
2965 Added a new external interface to allow the host to install ACPI tables
2966 very early, before the namespace is even created. AcpiInstallTable gives
2967 the host additional flexibility for ACPI table management. Tables can be
2968 installed directly by the host as if they had originally appeared in the
2969 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2970 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2971 with additional internal restructuring and cleanup. See the ACPICA
2972 Reference for interface details. Lv Zheng.
2974 Added validation of the checksum for all incoming dynamically loaded
2975 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2978 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2979 and GPE handler removal. Restructured calls to eliminate possible race
2980 conditions. Lv Zheng.
2982 Added a warning for the use/execution of the ASL/AML Unload (table)
2983 operator. This will help detect and identify machines that use this
2984 operator if and when it is ever used. This operator has never been seen
2985 in the field and the usage model and possible side-effects of the drastic
2986 runtime action of a full table removal are unknown.
2988 Reverted the use of #pragma push/pop which was introduced in the 20140214
2989 release. It appears that push and pop are not implemented by enough
2990 compilers to make the use of this feature feasible for ACPICA at this
2991 time. However, these operators may be deployed in a future ACPICA
2994 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2997 Source code generation:
2998 1) Disabled the use of the "strchr" macro for the gcc-specific
2999 generation. For some versions of gcc, this macro can periodically expose
3000 a compiler bug which in turn causes compile-time error(s).
3001 2) Added support for PPC64 compilation. Colin Ian King.
3003 Example Code and Data Size: These are the sizes for the OS-independent
3004 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3005 debug version of the code includes the debug output trace mechanism and
3006 has a much larger code and data size.
3009 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
3010 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
3012 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
3013 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
3016 2) iASL Compiler/Disassembler and Tools:
3018 Disassembler: Added several new features to improve the readability of
3019 the resulting ASL code. Extra information is emitted within comment
3020 fields in the ASL code:
3021 1) Known _HID/_CID values are decoded to descriptive text.
3022 2) Standard values for the Notify() operator are decoded to descriptive
3024 3) Target operands are expanded to full pathnames (in a comment) when
3027 Disassembler: Miscellaneous updates for extern() handling:
3028 1) Abort compiler if file specified by -fe option does not exist.
3029 2) Silence unnecessary warnings about argument count mismatches.
3030 3) Update warning messages concerning unresolved method externals.
3031 4) Emit "UnknownObj" keyword for externals whose type cannot be
3035 1) Added the -a option to display both the ASL syntax and the AML
3036 encoding for an input ASL operator. This effectively displays all known
3037 information about an ASL operator with one AcpiHelp invocation.
3038 2) Added substring match support (similar to a wildcard) for the -i
3039 (_HID/PNP IDs) option.
3041 iASL/Disassembler: Since this tool does not yet support execution on big-
3042 endian machines, added detection of endianness and an error message if
3043 execution is attempted on big-endian. Support for big-endian within iASL
3044 is a feature that is on the ACPICA to-be-done list.
3047 1) Remove option to extract binary files from an acpidump; this function
3048 is made obsolete by the AcpiXtract utility.
3049 2) General cleanup of open files and allocated buffers.
3052 ----------------------------------------
3053 14 February 2014. Summary of changes for version 20140214:
3055 1) ACPICA kernel-resident subsystem:
3057 Implemented a new mechanism to proactively prevent problems with ill-
3058 behaved reentrant control methods that create named ACPI objects. This
3059 behavior is illegal as per the ACPI specification, but is nonetheless
3060 frequently seen in the field. Previously, this could lead to an
3061 AE_ALREADY_EXISTS exception if the method was actually entered by more
3062 than one thread. This new mechanism detects such methods at table load
3063 time and marks them "serialized" to prevent reentrancy. A new global
3064 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
3065 feature if desired. This mechanism and global option obsoletes and
3066 supersedes the previous AcpiGbl_SerializeAllMethods option.
3068 Added the "Windows 2013" string to the _OSI support. ACPICA will now
3069 respond TRUE to _OSI queries with this string. It is the stated policy of
3070 ACPICA to add new strings to the _OSI support as soon as possible after
3071 they are defined. See the full ACPICA _OSI policy which has been added to
3072 the utilities/utosi.c file.
3074 Hardened/updated the _PRT return value auto-repair code:
3075 1) Do not abort the repair on a single subpackage failure, continue to
3076 check all subpackages.
3077 2) Add check for the minimum subpackage length (4).
3078 3) Properly handle extraneous NULL package elements.
3080 Added support to avoid the possibility of infinite loops when traversing
3081 object linked lists. Never allow an infinite loop, even in the face of
3082 corrupted object lists.
3084 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
3085 pack(pop) directives to ensure that the ACPICA headers are independent of
3086 compiler settings or other host headers.
3088 Example Code and Data Size: These are the sizes for the OS-independent
3089 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3090 debug version of the code includes the debug output trace mechanism and
3091 has a much larger code and data size.
3094 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
3095 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
3097 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3098 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3101 2) iASL Compiler/Disassembler and Tools:
3103 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
3104 first reserved field was incorrectly forced to have a value of zero. This
3105 change correctly forces the field to have a value of one. ACPICA BZ 1081.
3107 Debugger: Added missing support for the "Extra" and "Data" subobjects
3108 when displaying object data.
3110 Debugger: Added support to display entire object linked lists when
3111 displaying object data.
3113 iASL: Removed the obsolete -g option to obtain ACPI tables from the
3114 Windows registry. This feature has been superseded by the acpidump
3118 ----------------------------------------
3119 14 January 2014. Summary of changes for version 20140114:
3121 1) ACPICA kernel-resident subsystem:
3123 Updated all ACPICA copyrights and signons to 2014. Added the 2014
3124 copyright to all module headers and signons, including the standard Linux
3125 header. This affects virtually every file in the ACPICA core subsystem,
3126 iASL compiler, all ACPICA utilities, and the test suites.
3128 Improved parameter validation for AcpiInstallGpeBlock. Added the
3130 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
3131 2) There is not already a GPE block attached to the device.
3132 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
3135 Correctly support "references" in the ACPI_OBJECT. This change fixes the
3136 support to allow references (namespace nodes) to be passed as arguments
3137 to control methods via the evaluate object interface. This is probably
3138 most useful for testing purposes, however.
3140 Improved support for 32/64 bit physical addresses in printf()-like
3141 output. This change improves the support for physical addresses in printf
3142 debug statements and other output on both 32-bit and 64-bit hosts. It
3143 consistently outputs the appropriate number of bytes for each host. The
3144 %p specifier is unsatisfactory since it does not emit uniform output on
3145 all hosts/clib implementations (on some, leading zeros are not supported,
3146 leading to difficult-to-read output).
3148 Example Code and Data Size: These are the sizes for the OS-independent
3149 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3150 debug version of the code includes the debug output trace mechanism and
3151 has a much larger code and data size.
3154 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
3155 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
3157 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3158 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3161 2) iASL Compiler/Disassembler and Tools:
3163 iASL: Fix a possible fault when using the Connection() operator. Fixes a
3164 problem if the parent Field definition for the Connection operator refers
3165 to an operation region that does not exist. ACPICA BZ 1064.
3167 AcpiExec: Load of local test tables is now optional. The utility has the
3168 capability to load some various tables to test features of ACPICA.
3169 However, there are enough of them that the output of the utility became
3170 confusing. With this change, only the required local tables are displayed
3171 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
3172 line specification. This makes the default output simler and easier to
3173 understand. The -el command line option restores the original behavior
3174 for testing purposes.
3176 AcpiExec: Added support for overlapping operation regions. This change
3177 expands the simulation of operation regions by supporting regions that
3178 overlap within the given address space. Supports SystemMemory and
3179 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
3181 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
3182 allows AcpiExec to simulate these address spaces, similar to the current
3183 support for SystemMemory and SystemIO.
3185 Debugger: Added new command to read/write/compare all namespace objects.
3186 The command "test objects" will exercise the entire namespace by writing
3187 new values to each data object, and ensuring that the write was
3188 successful. The original value is then restored and verified.
3190 Debugger: Added the "test predefined" command. This change makes this
3191 test public and puts it under the new "test" command. The test executes
3192 each and every predefined name within the current namespace.
3195 ----------------------------------------
3196 18 December 2013. Summary of changes for version 20131218:
3198 Global note: The ACPI 5.0A specification was released this month. There
3199 are no changes needed for ACPICA since this release of ACPI is an
3200 errata/clarification release. The specification is available at
3204 1) ACPICA kernel-resident subsystem:
3206 Added validation of the XSDT root table if it is present. Some older
3207 platforms contain an XSDT that is ill-formed or otherwise invalid (such
3208 as containing some or all entries that are NULL pointers). This change
3209 adds a new function to validate the XSDT before actually using it. If the
3210 XSDT is found to be invalid, ACPICA will now automatically fall back to
3211 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
3212 ACPICA and enhanced by Lv Zheng and Bob Moore.
3214 Added a runtime option to ignore the XSDT and force the use of the RSDT.
3215 This change adds a runtime option that will force ACPICA to use the RSDT
3216 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
3217 requires that an XSDT be used instead of the RSDT, the XSDT has been
3218 found to be corrupt or ill-formed on some machines. Lv Zheng.
3220 Added a runtime option to favor 32-bit FADT register addresses over the
3221 64-bit addresses. This change adds an option to favor 32-bit FADT
3222 addresses when there is a conflict between the 32-bit and 64-bit versions
3223 of the same register. The default behavior is to use the 64-bit version
3224 in accordance with the ACPI specification. This can now be overridden via
3225 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
3227 During the change above, the internal "Convert FADT" and "Verify FADT"
3228 functions have been merged to simplify the code, making it easier to
3229 understand and maintain. ACPICA BZ 933.
3231 Improve exception reporting and handling for GPE block installation.
3232 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
3233 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
3235 Added helper macros to extract bus/segment numbers from the HEST table.
3236 This change adds two macros to extract the encoded bus and segment
3237 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
3238 Betty Dall <betty.dall@hp.com>
3240 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
3241 by ACPICA. It is not a public macro, so it should have no effect on
3242 existing OSV code. Lv Zheng.
3244 Example Code and Data Size: These are the sizes for the OS-independent
3245 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3246 debug version of the code includes the debug output trace mechanism and
3247 has a much larger code and data size.
3250 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3251 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3253 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3254 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3257 2) iASL Compiler/Disassembler and Tools:
3259 Disassembler: Improved pathname support for emitted External()
3260 statements. This change adds full pathname support for external names
3261 that have been resolved internally by the inclusion of additional ACPI
3262 tables (via the iASL -e option). Without this change, the disassembler
3263 can emit multiple externals for the same object, or it become confused
3264 when the Scope() operator is used on an external object. Overall, greatly
3265 improves the ability to actually recompile the emitted ASL code when
3266 objects a referenced across multiple ACPI tables. Reported by Michael
3267 Tsirkin (mst@redhat.com).
3269 Tests/ASLTS: Updated functional control suite to execute with no errors.
3270 David Box. Fixed several errors related to the testing of the interpreter
3271 slack mode. Lv Zheng.
3273 iASL: Added support to detect names that are declared within a control
3274 method, but are unused (these are temporary names that are only valid
3275 during the time the method is executing). A remark is issued for these
3276 cases. ACPICA BZ 1022.
3278 iASL: Added full support for the DBG2 table. Adds full disassembler,
3279 table compiler, and template generator support for the DBG2 table (Debug
3282 iASL: Added full support for the PCCT table, update the table definition.
3283 Updates the PCCT table definition in the actbl3.h header and adds table
3284 compiler and template generator support.
3286 iASL: Added an option to emit only error messages (no warnings/remarks).
3287 The -ve option will enable only error messages, warnings and remarks are
3288 suppressed. This can simplify debugging when only the errors are
3289 important, such as when an ACPI table is disassembled and there are many
3290 warnings and remarks -- but only the actual errors are of real interest.
3292 Example ACPICA code (source/tools/examples): Updated the example code so
3293 that it builds to an actual working program, not just example code. Added
3294 ACPI tables and execution of an example control method in the DSDT. Added
3295 makefile support for Unix generation.
3298 ----------------------------------------
3299 15 November 2013. Summary of changes for version 20131115:
3301 This release is available at https://acpica.org/downloads
3304 1) ACPICA kernel-resident subsystem:
3306 Resource Manager: Fixed loop termination for the "get AML length"
3307 function. The loop previously had an error termination on a NULL resource
3308 pointer, which can never happen since the loop simply increments a valid
3309 resource pointer. This fix changes the loop to terminate with an error on
3310 an invalid end-of-buffer condition. The problem can be seen as an
3311 infinite loop by callers to AcpiSetCurrentResources with an invalid or
3312 corrupted resource descriptor, or a resource descriptor that is missing
3313 an END_TAG descriptor. Reported by Dan Carpenter
3314 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
3316 Table unload and ACPICA termination: Delete all attached data objects
3317 during namespace node deletion. This fix updates namespace node deletion
3318 to delete the entire list of attached objects (attached via
3319 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
3320 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
3322 ACPICA termination: Added support to delete all objects attached to the
3323 root namespace node. This fix deletes any and all objects that have been
3324 attached to the root node via AcpiAttachData. Previously, none of these
3325 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
3327 Debug output: Do not emit the function nesting level for the in-kernel
3328 build. The nesting level is really only useful during a single-thread
3329 execution. Therefore, only enable this output for the AcpiExec utility.
3330 Also, only emit the thread ID when executing under AcpiExec (Context
3331 switches are still always detected and a message is emitted). ACPICA BZ
3334 Example Code and Data Size: These are the sizes for the OS-independent
3335 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3336 debug version of the code includes the debug output trace mechanism and
3337 has a much larger code and data size.
3340 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3341 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3343 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3344 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3347 2) iASL Compiler/Disassembler and Tools:
3349 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
3350 correct portable POSIX header for terminal control functions.
3352 Disassembler: Fixed control method invocation issues related to the use
3353 of the CondRefOf() operator. The problem is seen in the disassembly where
3354 control method invocations may not be disassembled properly if the
3355 control method name has been used previously as an argument to CondRefOf.
3356 The solution is to not attempt to emit an external declaration for the
3357 CondRefOf target (it is not necessary in the first place). This prevents
3358 disassembler object type confusion. ACPICA BZ 988.
3360 Unix Makefiles: Added an option to disable compiler optimizations and the
3361 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
3362 with optimizations (reportedly, gcc 4.4 for example). This change adds a
3363 command line option for make (NOOPT) that disables all compiler
3364 optimizations and the _FORTIFY_SOURCE compiler flag. The default
3365 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
3366 1034. Lv Zheng, Bob Moore.
3368 Tests/ASLTS: Added options to specify individual test cases and modes.
3369 This allows testers running aslts.sh to optionally specify individual
3370 test modes and test cases. Also added an option to disable the forced
3371 generation of the ACPICA tools from source if desired. Lv Zheng.
3373 ----------------------------------------
3374 27 September 2013. Summary of changes for version 20130927:
3376 This release is available at https://acpica.org/downloads
3379 1) ACPICA kernel-resident subsystem:
3381 Fixed a problem with store operations to reference objects. This change
3382 fixes a problem where a Store operation to an ArgX object that contained
3384 reference to a field object did not complete the automatic dereference
3386 then write to the actual field object. Instead, the object type of the
3387 field object was inadvertently changed to match the type of the source
3388 operand. The new behavior will actually write to the field object (buffer
3389 field or field unit), thus matching the correct ACPI-defined behavior.
3391 Implemented support to allow the host to redefine individual OSL
3392 prototypes. This change enables the host to redefine OSL prototypes found
3393 in the acpiosxf.h file. This allows the host to implement OSL interfaces
3394 with a macro or inlined function. Further, it allows the host to add any
3395 additional required modifiers such as __iomem, __init, __exit, etc., as
3396 necessary on a per-interface basis. Enables maximum flexibility for the
3397 OSL interfaces. Lv Zheng.
3399 Hardcoded the access width for the FADT-defined reset register. The ACPI
3400 specification requires the reset register width to be 8 bits. ACPICA now
3401 hardcodes the width to 8 and ignores the FADT width value. This provides
3402 compatibility with other ACPI implementations that have allowed BIOS code
3403 with bad register width values to go unnoticed. Matthew Garett, Bob
3407 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
3409 in the OSL header (acpiosxf). The change modifies the position of this
3410 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
3411 build issues if the OSL defines the implementation of the interface to be
3412 an inline stub function. Lv Zheng.
3414 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
3415 initialization interfaces. This change adds a new macro for the main init
3416 and terminate external interfaces in order to support hosts that require
3417 additional or different processing for these functions. Changed from
3418 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
3421 Cleaned up the memory allocation macros for configurability. In the
3423 case, the ACPI_ALLOCATE and related macros now resolve directly to their
3424 respective AcpiOs* OSL interfaces. Two options:
3425 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
3426 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
3427 2) For AcpiExec (and for debugging), the macros can optionally be
3429 to the local ACPICA interfaces that track each allocation (local tracking
3430 is used to immediately detect memory leaks).
3433 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
3434 to predefine this macro to either TRUE or FALSE during the system build.
3436 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
3438 Example Code and Data Size: These are the sizes for the OS-independent
3439 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3440 debug version of the code includes the debug output trace mechanism and
3441 has a much larger code and data size.
3444 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3445 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3447 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3448 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3451 2) iASL Compiler/Disassembler and Tools:
3453 iASL: Implemented wildcard support for the -e option. This simplifies use
3454 when there are many SSDTs that must be included to resolve external
3456 declarations. ACPICA BZ 1041. Example:
3457 iasl -e ssdt*.dat -d dsdt.dat
3459 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3460 adds a portable module that implements full history and limited line
3461 editing for Unix and Linux systems. It does not use readline() due to
3462 portability issues. Instead it uses the POSIX termio interface to put the
3463 terminal in raw input mode so that the various special keys can be
3465 (such as up/down-arrow for history support and left/right-arrow for line
3466 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3468 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3469 one or more spaces. This provides compatible with early or different
3470 versions of the AcpiDump utility. ACPICA BZ 1044.
3472 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3473 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3474 no other data. This change adds support to dump these tables. Any tables
3475 shorter than the length of an ACPI table header remain in error (an error
3476 message is emitted). Reported by Yi Li.
3478 Debugger: Echo actual command along with the "unknown command" message.
3480 ----------------------------------------
3481 23 August 2013. Summary of changes for version 20130823:
3483 1) ACPICA kernel-resident subsystem:
3485 Implemented support for host-installed System Control Interrupt (SCI)
3486 handlers. Certain ACPI functionality requires the host to handle raw
3487 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3488 state support requires the host device driver to handle SCIs to examine
3489 if the doorbell has been activated. Multiple SCI handlers can be
3490 installed to allow for future expansion. New external interfaces are
3491 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3492 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3494 Operation region support: Never locally free the handler "context"
3495 pointer. This change removes some dangerous code that attempts to free
3496 the handler context pointer in some (rare) circumstances. The owner of
3497 the handler owns this pointer and the ACPICA code should never touch it.
3498 Although not seen to be an issue in any kernel, it did show up as a
3499 problem (fault) under AcpiExec. Also, set the internal storage field for
3500 the context pointer to zero when the region is deactivated, simply for
3501 sanity. David Box. ACPICA BZ 1039.
3503 AcpiRead: On error, do not modify the return value target location. If an
3504 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3505 modify the target of the return value pointer. Makes the code consistent
3506 with the rest of ACPICA. Bjorn Helgaas.
3508 Example Code and Data Size: These are the sizes for the OS-independent
3509 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3510 debug version of the code includes the debug output trace mechanism and
3511 has a much larger code and data size.
3514 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3515 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3517 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3518 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3521 2) iASL Compiler/Disassembler and Tools:
3523 AcpiDump: Implemented several new features and fixed some problems:
3524 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3525 2) Added support for multiple table instances (SSDT, UEFI).
3526 3) Added option to dump "customized" (overridden) tables (-c).
3527 4) Fixed a problem where some table filenames were improperly
3529 5) Improved some error messages, removed some unnecessary messages.
3531 iASL: Implemented additional support for disassembly of ACPI tables that
3532 contain invocations of external control methods. The -fe<file> option
3533 allows the import of a file that specifies the external methods along
3534 with the required number of arguments for each -- allowing for the
3535 correct disassembly of the table. This is a workaround for a limitation
3536 of AML code where the disassembler often cannot determine the number of
3537 arguments required for an external control method and generates incorrect
3538 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3540 Debugger: Implemented a new command (paths) that displays the full
3541 pathnames (namepaths) and object types of all objects in the namespace.
3542 This is an alternative to the namespace command.
3544 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3545 mechanism and any installed handlers.
3547 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3548 This can occur if there are too many parent prefixes in a namepath (for
3549 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3551 Application OSLs: Set the return value for the PCI read functions. These
3552 functions simply return AE_OK, but should set the return value to zero
3553 also. This change implements this. ACPICA BZ 1038.
3555 Debugger: Prevent possible command line buffer overflow. Increase the
3556 size of a couple of the debugger line buffers, and ensure that overflow
3557 cannot happen. ACPICA BZ 1037.
3559 iASL: Changed to abort immediately on serious errors during the parsing
3560 phase. Due to the nature of ASL, there is no point in attempting to
3561 compile these types of errors, and they typically end up causing a
3562 cascade of hundreds of errors which obscure the original problem.
3564 ----------------------------------------
3565 25 July 2013. Summary of changes for version 20130725:
3567 1) ACPICA kernel-resident subsystem:
3569 Fixed a problem with the DerefOf operator where references to FieldUnits
3570 and BufferFields incorrectly returned the parent object, not the actual
3571 value of the object. After this change, a dereference of a FieldUnit
3572 reference results in a read operation on the field to get the value, and
3573 likewise, the appropriate BufferField value is extracted from the target
3576 Fixed a problem where the _WAK method could cause a fault under these
3577 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3578 method returned no value. The problem is rarely seen because most kernels
3579 run ACPICA in slack mode.
3581 For the DerefOf operator, a fatal error now results if an attempt is made
3582 to dereference a reference (created by the Index operator) to a NULL
3583 package element. Provides compatibility with other ACPI implementations,
3584 and this behavior will be added to a future version of the ACPI
3587 The ACPI Power Management Timer (defined in the FADT) is now optional.
3588 This provides compatibility with other ACPI implementations and will
3589 appear in the next version of the ACPI specification. If there is no PM
3590 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3591 zero in the FADT indicates no PM timer.
3593 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3594 allows the host to globally enable/disable all vendor strings, all
3595 feature strings, or both. Intended to be primarily used for debugging
3596 purposes only. Lv Zheng.
3598 Expose the collected _OSI data to the host via a global variable. This
3599 data tracks the highest level vendor ID that has been invoked by the BIOS
3600 so that the host (and potentially ACPICA itself) can change behaviors
3601 based upon the age of the BIOS.
3603 Example Code and Data Size: These are the sizes for the OS-independent
3604 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3605 debug version of the code includes the debug output trace mechanism and
3606 has a much larger code and data size.
3609 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3610 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3612 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3613 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3616 2) iASL Compiler/Disassembler and Tools:
3618 iASL: Created the following enhancements for the -so option (create
3620 1)Add offsets for the last nameseg in each namepath for every supported
3622 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3623 3)Add the actual AML opcode for the parent object of every supported
3625 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3627 Disassembler: Emit all unresolved external symbols in a single block.
3628 These are external references to control methods that could not be
3629 resolved, and thus, the disassembler had to make a guess at the number of
3632 iASL: The argument to the -T option (create table template) is now
3633 optional. If not specified, the default table is a DSDT, typically the
3636 ----------------------------------------
3637 26 June 2013. Summary of changes for version 20130626:
3639 1) ACPICA kernel-resident subsystem:
3641 Fixed an issue with runtime repair of the _CST object. Null or invalid
3642 elements were not always removed properly. Lv Zheng.
3644 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3645 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3646 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3647 makes the system-wide number of GPEs essentially unlimited.
3649 Example Code and Data Size: These are the sizes for the OS-independent
3650 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3651 debug version of the code includes the debug output trace mechanism and
3652 has a much larger code and data size.
3655 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3656 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3658 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3659 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3662 2) iASL Compiler/Disassembler and Tools:
3664 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3665 hosts. Now supports Linux, FreeBSD, and Windows.
3667 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3668 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3670 iASL/Preprocessor: Implemented full support for nested
3671 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3673 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3674 max. The original purpose of this constraint was to limit the amount of
3675 debug output. However, the string function in question (UtPrintString) is
3676 now used for the disassembler also, where 256 bytes is insufficient.
3677 Reported by RehabMan@GitHub.
3679 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3680 tables. ACPICA BZ 999. Lv Zheng.
3682 iASL: Fixed a couple of error exit issues that could result in a "Could
3683 not delete <file>" message during ASL compilation.
3685 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3686 the actual signatures for these tables are "FACP" and "APIC",
3689 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3690 tables are allowed to have multiple instances.
3692 ----------------------------------------
3693 17 May 2013. Summary of changes for version 20130517:
3695 1) ACPICA kernel-resident subsystem:
3697 Fixed a regression introduced in version 20130328 for _INI methods. This
3698 change fixes a problem introduced in 20130328 where _INI methods are no
3699 longer executed properly because of a memory block that was not
3700 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3701 <tomasz.nowicki@linaro.org>.
3703 Fixed a possible problem with the new extended sleep registers in the
3705 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3706 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3709 Implemented return value repair code for _CST predefined objects: Sort
3711 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3713 Implemented a debug-only option to disable loading of SSDTs from the
3714 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3715 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3716 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3718 Fixed some issues in the ACPICA initialization and termination code:
3719 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3720 1) Clear events initialized flag upon event component termination. ACPICA
3722 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3723 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3724 4) Clear debug buffer global on termination to prevent possible multiple
3725 delete. ACPICA BZ 1010.
3727 Standardized all switch() blocks across the entire source base. After
3729 years, different formatting for switch() had crept in. This change makes
3730 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3732 Split some files to enhance ACPICA modularity and configurability:
3733 1) Split buffer dump routines into utilities/utbuffer.c
3734 2) Split internal error message routines into utilities/uterror.c
3735 3) Split table print utilities into tables/tbprint.c
3736 4) Split iASL command-line option processing into asloptions.c
3738 Makefile enhancements:
3739 1) Support for all new files above.
3740 2) Abort make on errors from any subcomponent. Chao Guan.
3741 3) Add build support for Apple Mac OS X. Liang Qi.
3743 Example Code and Data Size: These are the sizes for the OS-independent
3744 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3745 debug version of the code includes the debug output trace mechanism and
3746 has a much larger code and data size.
3749 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3750 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3752 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3753 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3756 2) iASL Compiler/Disassembler and Tools:
3758 New utility: Implemented an easily portable version of the acpidump
3759 utility to extract ACPI tables from the system (or a file) in an ASCII
3761 dump format. The top-level code implements the various command line
3762 options, file I/O, and table dump routines. To port to a new host, only
3763 three functions need to be implemented to get tables -- since this
3764 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3765 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3766 1) The Windows version obtains the ACPI tables from the Registry.
3767 2) The Linux version is under development.
3768 3) Other hosts - If an OS-dependent module is submitted, it will be
3769 distributed with ACPICA.
3771 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3772 restructuring/change to the initialization sequence caused this option to
3773 no longer work properly.
3775 iASL: Implemented a mechanism to disable specific warnings and remarks.
3776 Adds a new command line option, "-vw <messageid> as well as "#pragma
3777 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3779 iASL: Fix for too-strict package object validation. The package object
3780 validation for return values from the predefined names is a bit too
3781 strict, it does not allow names references within the package (which will
3782 be resolved at runtime.) These types of references cannot be validated at
3783 compile time. This change ignores named references within package objects
3784 for names that return or define static packages.
3786 Debugger: Fixed the 80-character command line limitation for the History
3787 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3789 iASL: Added control method and package support for the -so option
3790 (generates AML offset table for BIOS support.)
3792 iASL: issue a remark if a non-serialized method creates named objects. If
3793 a thread blocks within the method for any reason, and another thread
3794 enters the method, the method will fail because an attempt will be made
3796 create the same (named) object twice. In this case, issue a remark that
3797 the method should be marked serialized. NOTE: may become a warning later.
3800 ----------------------------------------
3801 18 April 2013. Summary of changes for version 20130418:
3803 1) ACPICA kernel-resident subsystem:
3805 Fixed a possible buffer overrun during some rare but specific field unit
3806 read operations. This overrun can only happen if the DSDT version is 1 --
3807 meaning that all AML integers are 32 bits -- and the field length is
3808 between 33 and 55 bits long. During the read, an internal buffer object
3810 created for the field unit because the field is larger than an integer
3812 bits). However, in this case, the buffer will be incorrectly written
3813 beyond the end because the buffer length is less than the internal
3815 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3816 long, but a full 8 bytes will be written.
3818 Updated the Embedded Controller "orphan" _REG method support. This refers
3819 to _REG methods under the EC device that have no corresponding operation
3820 region. This is allowed by the ACPI specification. This update removes a
3821 dependency on the existence an ECDT table. It will execute an orphan _REG
3822 method as long as the operation region handler for the EC is installed at
3823 the EC device node and not the namespace root. Rui Zhang (original
3824 update), Bob Moore (update/integrate).
3826 Implemented run-time argument typechecking for all predefined ACPI names
3827 (_STA, _BIF, etc.) This change performs object typechecking on all
3828 incoming arguments for all predefined names executed via
3829 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3830 passing correct object types as well as the correct number of arguments
3831 (therefore identifying any issues immediately). Also, the ASL/namespace
3832 definition of the predefined name is checked against the ACPI
3833 specification for the proper argument count. Adds one new file,
3836 Changed an exception code for the ASL UnLoad() operator. Changed the
3837 exception code for the case where the input DdbHandle is invalid, from
3838 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3840 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3841 global makefile. The use of this flag causes compiler errors on earlier
3842 versions of GCC, so it has been removed for compatibility.
3844 Miscellaneous cleanup:
3845 1) Removed some unused/obsolete macros
3846 2) Fixed a possible memory leak in the _OSI support
3847 3) Removed an unused variable in the predefined name support
3848 4) Windows OSL: remove obsolete reference to a memory list field
3850 Example Code and Data Size: These are the sizes for the OS-independent
3851 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3852 debug version of the code includes the debug output trace mechanism and
3853 has a much larger code and data size.
3856 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3857 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3859 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3860 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3863 2) iASL Compiler/Disassembler and Tools:
3865 AcpiExec: Added installation of a handler for the SystemCMOS address
3866 space. This prevents control method abort if a method accesses this
3869 AcpiExec: Added support for multiple EC devices, and now install EC
3870 operation region handler(s) at the actual EC device instead of the
3871 namespace root. This reflects the typical behavior of host operating
3874 AcpiExec: Updated to ensure that all operation region handlers are
3875 installed before the _REG methods are executed. This prevents a _REG
3876 method from aborting if it accesses an address space has no handler.
3877 AcpiExec installs a handler for every possible address space.
3879 Debugger: Enhanced the "handlers" command to display non-root handlers.
3880 This change enhances the handlers command to display handlers associated
3881 with individual devices throughout the namespace, in addition to the
3882 currently supported display of handlers associated with the root
3886 ASL Test Suite: Several test suite errors have been identified and
3887 resolved, reducing the total error count during execution. Chao Guan.
3889 ----------------------------------------
3890 28 March 2013. Summary of changes for version 20130328:
3892 1) ACPICA kernel-resident subsystem:
3894 Fixed several possible race conditions with the internal object reference
3895 counting mechanism. Some of the external ACPICA interfaces update object
3896 reference counts without holding the interpreter or namespace lock. This
3897 change adds a spinlock to protect reference count updates on the internal
3898 ACPICA objects. Reported by and with assistance from Andriy Gapon
3901 FADT support: Removed an extraneous warning for very large GPE register
3902 sets. This change removes a size mismatch warning if the legacy length
3903 field for a GPE register set is larger than the 64-bit GAS structure can
3904 accommodate. GPE register sets can be larger than the 255-bit width
3905 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3907 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3908 return from this interface. Handles a possible timeout case if
3909 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3910 "forever". Jung-uk Kim.
3912 Predefined name support: Add allowed/required argument type information
3914 the master predefined info table. This change adds the infrastructure to
3915 enable typechecking on incoming arguments for all predefined
3916 methods/objects. It does not actually contain the code that will fully
3917 utilize this information, this is still under development. Also condenses
3918 some duplicate code for the predefined names into a new module,
3919 utilities/utpredef.c
3921 Example Code and Data Size: These are the sizes for the OS-independent
3922 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3923 debug version of the code includes the debug output trace mechanism and
3924 has a much larger code and data size.
3927 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3928 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3930 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3931 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3934 2) iASL Compiler/Disassembler and Tools:
3936 iASL: Implemented a new option to simplify the development of ACPI-
3938 BIOS code. Adds support for a new "offset table" output file. The -so
3939 option will create a C table containing the AML table offsets of various
3940 named objects in the namespace so that BIOS code can modify them easily
3942 boot time. This can simplify BIOS runtime code by eliminating expensive
3943 searches for "magic values", enhancing boot times and adding greater
3944 reliability. With assistance from Lee Hamel.
3946 iASL: Allow additional predefined names to return zero-length packages.
3947 Now, all predefined names that are defined by the ACPI specification to
3948 return a "variable-length package of packages" are allowed to return a
3949 zero length top-level package. This allows the BIOS to tell the host that
3950 the requested feature is not supported, and supports existing BIOS/ASL
3953 iASL: Changed the "result not used" warning to an error. This is the case
3954 where an ASL operator is effectively a NOOP because the result of the
3955 operation is not stored anywhere. For example:
3957 There is no target (missing 3rd argument), nor is the function return
3958 value used. This is potentially a very serious problem -- since the code
3959 was probably intended to do something, but for whatever reason, the value
3960 was not stored. Therefore, this issue has been upgraded from a warning to
3963 AcpiHelp: Added allowable/required argument types to the predefined names
3964 info display. This feature utilizes the recent update to the predefined
3965 names table (above).
3967 ----------------------------------------
3968 14 February 2013. Summary of changes for version 20130214:
3970 1) ACPICA Kernel-resident Subsystem:
3972 Fixed a possible regression on some hosts: Reinstated the safe return
3973 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3974 evaluated only once. Although these macros are not needed for the ACPICA
3975 code itself, they are often used by ACPI-related host device drivers
3977 the safe feature may be necessary.
3979 Fixed several issues related to the ACPI 5.0 reduced hardware support
3980 (SOC): Now ensure that if the platform declares itself as hardware-
3982 via the FADT, the following functions become NOOPs (and always return
3983 AE_OK) because ACPI is always enabled by definition on these machines:
3989 Dynamic Object Repair: Implemented additional runtime repairs for
3990 predefined name return values. Both of these repairs can simplify code in
3991 the related device drivers that invoke these methods:
3992 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3993 string to a Unicode buffer.
3994 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3996 lone end tag descriptor in the following cases: A Return(0) was executed,
3997 a null buffer was returned, or no object at all was returned (non-slack
3998 mode only). Adds a new file, nsconvert.c
3999 ACPICA BZ 998. Bob Moore, Lv Zheng.
4001 Resource Manager: Added additional code to prevent possible infinite
4003 while traversing corrupted or ill-formed resource template buffers. Check
4004 for zero-length resource descriptors in all code that loops through
4005 resource templates (the length field is used to index through the
4006 template). This change also hardens the external AcpiWalkResources and
4007 AcpiWalkResourceBuffer interfaces.
4009 Local Cache Manager: Enhanced the main data structure to eliminate an
4010 unnecessary mechanism to access the next object in the list. Actually
4011 provides a small performance enhancement for hosts that use the local
4012 ACPICA cache manager. Jung-uk Kim.
4014 Example Code and Data Size: These are the sizes for the OS-independent
4015 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4016 debug version of the code includes the debug output trace mechanism and
4017 has a much larger code and data size.
4020 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
4021 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
4023 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
4024 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
4027 2) iASL Compiler/Disassembler and Tools:
4029 iASL/Disassembler: Fixed several issues with the definition of the ACPI
4030 5.0 RASF table (RAS Feature Table). This change incorporates late changes
4031 that were made to the ACPI 5.0 specification.
4033 iASL/Disassembler: Added full support for the following new ACPI tables:
4034 1) The MTMR table (MID Timer Table)
4035 2) The VRTC table (Virtual Real Time Clock Table).
4036 Includes header file, disassembler, table compiler, and template support
4039 iASL: Implemented compile-time validation of package objects returned by
4040 predefined names. This new feature validates static package objects
4041 returned by the various predefined names defined to return packages. Both
4042 object types and package lengths are validated, for both parent packages
4043 and sub-packages, if any. The code is similar in structure and behavior
4045 the runtime repair mechanism within the AML interpreter and uses the
4046 existing predefined name information table. Adds a new file, aslprepkg.c.
4049 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
4050 This feature detects a binary file with a valid ACPI table header and
4051 invokes the disassembler automatically. Eliminates the need to
4052 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
4054 iASL/Disassembler: Added several warnings for the case where there are
4055 unresolved control methods during the disassembly. This can potentially
4056 cause errors when the output file is compiled, because the disassembler
4057 assumes zero method arguments in these cases (it cannot determine the
4058 actual number of arguments without resolution/definition of the method).
4060 Debugger: Added support to display all resources with a single command.
4061 Invocation of the resources command with no arguments will now display
4063 resources within the current namespace.
4065 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
4068 ----------------------------------------
4069 17 January 2013. Summary of changes for version 20130117:
4071 1) ACPICA Kernel-resident Subsystem:
4073 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
4074 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
4075 objects to return a package containing one integer, most BIOS code
4077 two integers and the previous code reflects that. However, we also need
4079 support BIOS code that actually implements to the ACPI spec, and this
4080 change reflects this.
4082 Fixed two issues with the ACPI_DEBUG_PRINT macros:
4083 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
4084 C compilers that require this support.
4085 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
4086 ACPI_DEBUG is already used by many of the various hosts.
4088 Updated all ACPICA copyrights and signons to 2013. Added the 2013
4089 copyright to all module headers and signons, including the standard Linux
4090 header. This affects virtually every file in the ACPICA core subsystem,
4091 iASL compiler, all ACPICA utilities, and the test suites.
4093 Example Code and Data Size: These are the sizes for the OS-independent
4094 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4095 debug version of the code includes the debug output trace mechanism and
4096 has a much larger code and data size.
4099 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4100 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4102 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
4103 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
4106 2) iASL Compiler/Disassembler and Tools:
4108 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
4109 prevent a possible fault on some hosts. Some C libraries modify the arg
4110 pointer parameter to vfprintf making it difficult to call it twice in the
4111 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
4112 does not affect the Windows OSL since the Win C library does not modify
4113 the arg pointer. Chao Guan, Bob Moore.
4115 iASL: Fixed a possible infinite loop when the maximum error count is
4116 reached. If an output file other than the .AML file is specified (such as
4117 a listing file), and the maximum number of errors is reached, do not
4118 attempt to flush data to the output file(s) as the compiler is aborting.
4119 This can cause an infinite loop as the max error count code essentially
4120 keeps calling itself.
4122 iASL/Disassembler: Added an option (-in) to ignore NOOP
4124 Implemented for both the compiler and the disassembler. Often, the NOOP
4125 opcode is used as padding for packages that are changed dynamically by
4127 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
4128 errors. This option causes the disassembler to ignore all NOOP opcodes
4129 (0xA3), and it also causes the compiler to ignore all ASL source code
4133 Debugger: Enhanced the Sleep command to execute all sleep states. This
4134 change allows Sleep to be invoked with no arguments and causes the
4135 debugger to execute all of the sleep states, 0-5, automatically.
4137 ----------------------------------------
4138 20 December 2012. Summary of changes for version 20121220:
4140 1) ACPICA Kernel-resident Subsystem:
4142 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
4143 alternate entry point for AcpiWalkResources and improves the usability of
4144 the resource manager by accepting as input a buffer containing the output
4145 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
4146 input buffer is not deleted by this interface so that it can be used by
4147 the host later. See the ACPICA reference for details.
4149 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
4150 (DSDT version < 2). The constant will be truncated and this warning
4151 reflects that behavior.
4153 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
4154 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
4155 both get and set the new wake bit in these descriptors, separately from
4156 the existing share bit. Reported by Aaron Lu.
4158 Interpreter: Fix Store() when an implicit conversion is not possible. For
4159 example, in the cases such as a store of a string to an existing package
4160 object, implement the store as a CopyObject(). This is a small departure
4161 from the ACPI specification which states that the control method should
4163 aborted in this case. However, the ASLTS suite depends on this behavior.
4165 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
4166 macros: check if debug output is currently enabled as soon as possible to
4167 minimize performance impact if debug is in fact not enabled.
4169 Source code restructuring: Cleanup to improve modularity. The following
4170 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
4171 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
4172 Associated makefiles and project files have been updated.
4174 Changed an exception code for LoadTable operator. For the case where one
4175 of the input strings is too long, change the returned exception code from
4176 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
4178 Fixed a possible memory leak in dispatcher error path. On error, delete
4179 the mutex object created during method mutex creation. Reported by
4180 tim.gardner@canonical.com.
4182 Example Code and Data Size: These are the sizes for the OS-independent
4183 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4184 debug version of the code includes the debug output trace mechanism and
4185 has a much larger code and data size.
4188 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4189 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4191 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
4192 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
4195 2) iASL Compiler/Disassembler and Tools:
4197 iASL: Disallow a method call as argument to the ObjectType ASL operator.
4198 This change tracks an errata to the ACPI 5.0 document. The AML grammar
4199 will not allow the interpreter to differentiate between a method and a
4200 method invocation when these are used as an argument to the ObjectType
4201 operator. The ACPI specification change is to disallow a method
4203 (UserTerm) for the ObjectType operator.
4205 Finish support for the TPM2 and CSRT tables in the headers, table
4206 compiler, and disassembler.
4208 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
4209 always expires immediately if the semaphore is not available. The
4211 code was using a relative-time timeout, but sem_timedwait requires the
4213 of an absolute time.
4215 iASL: Added a remark if the Timer() operator is used within a 32-bit
4216 table. This operator returns a 64-bit time value that will be truncated
4217 within a 32-bit table.
4219 iASL Source code restructuring: Cleanup to improve modularity. The
4220 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
4221 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
4225 ----------------------------------------
4226 14 November 2012. Summary of changes for version 20121114:
4228 1) ACPICA Kernel-resident Subsystem:
4230 Implemented a performance enhancement for ACPI/AML Package objects. This
4231 change greatly increases the performance of Package objects within the
4232 interpreter. It changes the processing of reference counts for packages
4234 optimizing for the most common case where the package sub-objects are
4235 either Integers, Strings, or Buffers. Increases the overall performance
4237 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
4239 Chao Guan. ACPICA BZ 943.
4241 Implemented and deployed common macros to extract flag bits from resource
4242 descriptors. Improves readability and maintainability of the code. Fixes
4244 problem with the UART serial bus descriptor for the number of data bits
4245 flags (was incorrectly 2 bits, should be 3).
4247 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
4248 of the macros and changed the SETx macros to the style of (destination,
4249 source). Also added ACPI_CASTx companion macros. Lv Zheng.
4251 Example Code and Data Size: These are the sizes for the OS-independent
4252 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4253 debug version of the code includes the debug output trace mechanism and
4254 has a much larger code and data size.
4257 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4258 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4260 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4261 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4264 2) iASL Compiler/Disassembler and Tools:
4266 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
4267 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
4268 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
4270 Disassembler: Fixed a problem with external declaration generation. Fixes
4271 a problem where an incorrect pathname could be generated for an external
4272 declaration if the original reference to the object includes leading
4273 carats (^). ACPICA BZ 984.
4275 Debugger: Completed a major update for the Disassemble<method> command.
4276 This command was out-of-date and did not properly disassemble control
4277 methods that had any reasonable complexity. This fix brings the command
4279 to the same level as the rest of the disassembler. Adds one new file,
4280 dmdeferred.c, which is existing code that is now common with the main
4281 disassembler and the debugger disassemble command. ACPICA MZ 978.
4283 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
4284 Newer versions of Bison emit this prototype, so moved the prototype out
4286 the iASL header to where it is actually used in order to avoid a
4290 iASL/Tools: Standardized use of the stream I/O functions:
4291 1) Ensure check for I/O error after every fopen/fread/fwrite
4292 2) Ensure proper order of size/count arguments for fread/fwrite
4293 3) Use test of (Actual != Requested) after all fwrite, and most fread
4294 4) Standardize I/O error messages
4295 Improves reliability and maintainability of the code. Bob Moore, Lv
4299 Disassembler: Prevent duplicate External() statements. During generation
4300 of external statements, detect similar pathnames that are actually
4301 duplicates such as these:
4304 Remove all leading '\' characters from pathnames during the external
4305 statement generation so that duplicates will be detected and tossed.
4308 Tools: Replace low-level I/O with stream I/O functions. Replace
4309 open/read/write/close with the stream I/O equivalents
4310 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
4313 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
4314 name header so that AcpiXtract recognizes the output file/table.
4316 iASL: Remove obsolete -2 option flag. Originally intended to force the
4317 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
4318 and the entire concept is now obsolete.
4320 ----------------------------------------
4321 18 October 2012. Summary of changes for version 20121018:
4324 1) ACPICA Kernel-resident Subsystem:
4326 Updated support for the ACPI 5.0 MPST table. Fixes some problems
4327 introduced by late changes to the table as it was added to the ACPI 5.0
4328 specification. Includes header, disassembler, and data table compiler
4329 support as well as a new version of the MPST template.
4331 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
4332 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
4333 methods: _HID, _CID, and _UID.
4335 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
4336 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
4337 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
4338 names for their various drivers. Affects the AcpiGetObjectInfo external
4339 interface, and other internal interfaces as well.
4341 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
4342 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
4343 on machines that support non-aligned transfers. Optimizes for this case
4344 rather than using a strncpy. With assistance from Zheng Lv.
4346 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
4347 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
4349 Added a new debug print message for AML mutex objects that are force-
4350 released. At control method termination, any currently acquired mutex
4351 objects are force-released. Adds a new debug-only message for each one
4354 Audited/updated all ACPICA return macros and the function debug depth
4355 counter: 1) Ensure that all functions that use the various TRACE macros
4356 also use the appropriate ACPICA return macros. 2) Ensure that all normal
4357 return statements surround the return expression (value) with parens to
4358 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
4359 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
4361 Global source code changes/maintenance: All extra lines at the start and
4362 end of each source file have been removed for consistency. Also, within
4363 comments, all new sentences start with a single space instead of a double
4364 space, again for consistency across the code base.
4366 Example Code and Data Size: These are the sizes for the OS-independent
4367 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4368 debug version of the code includes the debug output trace mechanism and
4369 has a much larger code and data size.
4372 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4373 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4375 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4376 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4379 2) iASL Compiler/Disassembler and Tools:
4381 AcpiExec: Improved the algorithm used for memory leak/corruption
4382 detection. Added some intelligence to the code that maintains the global
4383 list of allocated memory. The list is now ordered by allocated memory
4384 address, significantly improving performance. When running AcpiExec on
4385 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
4386 on the platform and/or the environment. Note, this performance
4387 enhancement affects the AcpiExec utility only, not the kernel-resident
4390 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
4391 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
4392 incorrect table offset reported for invalid opcodes. Report the original
4393 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
4395 Disassembler: Enhanced the -vt option to emit the binary table data in
4396 hex format to assist with debugging.
4398 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
4399 size of file structure. Colin Ian King.
4401 ----------------------------------------
4402 13 September 2012. Summary of changes for version 20120913:
4405 1) ACPICA Kernel-resident Subsystem:
4407 ACPI 5.0: Added two new notify types for the Hardware Error Notification
4408 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
4412 Table Manager: Merged/removed duplicate code in the root table resize
4413 functions. One function is external, the other is internal. Lv Zheng,
4417 Makefiles: Completely removed the obsolete "Linux" makefiles under
4418 acpica/generate/linux. These makefiles are obsolete and have been
4421 the generic unix makefiles under acpica/generate/unix.
4423 Makefiles: Ensure that binary files always copied properly. Minor rule
4425 to ensure that the final binary output files are always copied up to the
4426 appropriate binary directory (bin32 or bin64.)
4428 Example Code and Data Size: These are the sizes for the OS-independent
4429 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4431 version of the code includes the debug output trace mechanism and has a
4433 larger code and data size.
4436 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4437 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4439 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4440 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4443 2) iASL Compiler/Disassembler and Tools:
4445 Disassembler: Fixed a possible fault during the disassembly of resource
4446 descriptors when a second parse is required because of the invocation of
4447 external control methods within the table. With assistance from
4448 adq@lidskialf.net. ACPICA BZ 976.
4450 iASL: Fixed a namepath optimization problem. An error can occur if the
4452 node that contains the namepath to be optimized does not have a parent
4454 that is a named object. This change fixes the problem.
4456 iASL: Fixed a regression where the AML file is not deleted on errors. The
4458 output file should be deleted if there are any errors during the
4461 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4463 iASL: Added a feature to automatically increase internal line buffer
4465 Via realloc(), automatically increase the internal line buffer sizes as
4466 necessary to support very long source code lines. The current version of
4468 preprocessor requires a buffer long enough to contain full source code
4470 This change increases the line buffer(s) if the input lines go beyond the
4471 current buffer size. This eliminates errors that occurred when a source
4473 line was longer than the buffer.
4475 iASL: Fixed a problem with constant folding in method declarations. The
4476 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4478 Type3 opcode was used.
4480 Debugger: Improved command help support. For incorrect argument count,
4482 full help for the command. For help command itself, allow an argument to
4485 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4486 errors during execution of the suite. Guan Chao.
4488 ----------------------------------------
4489 16 August 2012. Summary of changes for version 20120816:
4492 1) ACPICA Kernel-resident Subsystem:
4494 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4496 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4497 deprecated and will probably be removed from the ACPI specification.
4499 does not invoke them, and reportedly never will. The final nail in the
4501 is that the ACPI specification states that these methods must be run with
4502 interrupts off, which is not going to happen in a kernel interpreter.
4504 Linux has removed all use of the methods also. It was discovered that
4505 invoking these functions caused failures on some machines, probably
4507 they were never tested since Windows does not call them. Affects two
4509 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4512 Implemented support for complex bit-packed buffers returned from the _PLD
4513 (Physical Location of Device) predefined method. Adds a new external
4514 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4516 structure. Note: C Bitfields cannot be used for this type of predefined
4517 structure since the memory layout of individual bitfields is not defined
4519 the C language. In addition, there are endian concerns where a compiler
4521 change the bitfield ordering based on the machine type. The new ACPICA
4522 interface eliminates these issues, and should be called after _PLD is
4523 executed. ACPICA BZ 954.
4525 Implemented a change to allow a scope change to root (via "Scope (\)")
4527 execution of module-level ASL code (code that is executed at table load
4530 Added the Windows8/Server2012 string for the _OSI method. This change
4533 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4536 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4538 and CSRT (Core System Resource Table).
4540 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4541 names. This simplifies access to the buffers returned by these predefined
4542 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4544 GPE support: Removed an extraneous parameter from the various low-level
4545 internal GPE functions. Tang Feng.
4547 Removed the linux makefiles from the unix packages. The generate/linux
4548 makefiles are obsolete and have been removed from the unix tarball
4550 packages. The replacement makefiles are under generate/unix, and there is
4552 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4554 Updates for Unix makefiles:
4555 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4556 2) Update linker flags (move to end of command line) for AcpiExec
4560 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4561 utxface.c to improve modularity and reduce file size.
4563 Example Code and Data Size: These are the sizes for the OS-independent
4564 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4565 debug version of the code includes the debug output trace mechanism and
4567 much larger code and data size.
4570 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4571 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4573 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4574 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4577 2) iASL Compiler/Disassembler and Tools:
4579 iASL: Fixed a problem with constant folding for fixed-length constant
4580 expressions. The constant-folding code was not being invoked for constant
4581 expressions that allow the use of type 3/4/5 opcodes to generate
4583 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4585 in the generation of invalid AML bytecode. ACPICA BZ 970.
4587 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4588 apparently automatically emit some of the necessary externals. This
4590 handles these versions in order to eliminate generation warnings.
4592 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4594 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4596 within comments in the output file.
4598 Debugger: Fixed a regression with the "Threads" command where
4599 AE_BAD_PARAMETER was always returned.
4601 ----------------------------------------
4602 11 July 2012. Summary of changes for version 20120711:
4604 1) ACPICA Kernel-resident Subsystem:
4606 Fixed a possible fault in the return package object repair code. Fixes a
4607 problem that can occur when a lone package object is wrapped with an
4609 package object in order to force conformance to the ACPI specification.
4611 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4615 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4616 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4617 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4619 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4621 Intel and other vendors. (for Intel: ICH4-M and earlier)
4623 This change removes the code to disable/enable bus master arbitration
4625 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4627 resume problems on some machines. The change has been in use for over
4631 Implemented two new external interfaces to support host-directed dynamic
4633 table load and unload. They are intended to simplify the host
4635 of hot-plug support:
4636 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4637 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4639 See the ACPICA reference for additional details. Adds one new file,
4640 components/tables/tbxfload.c
4642 Implemented and deployed two new interfaces for errors and warnings that
4644 known to be caused by BIOS/firmware issues:
4645 AcpiBiosError: Prints "ACPI Firmware Error" message.
4646 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4647 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4649 and FADT errors. Additional deployment to be completed as appropriate in
4651 future. The associated conditional macros are ACPI_BIOS_ERROR and
4652 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4657 Implicit notify support: ensure that no memory allocation occurs within a
4658 critical region. This fix moves a memory allocation outside of the time
4660 spinlock is held. Fixes issues on systems that do not allow this
4664 Split exception code utilities and tables into a new file,
4667 Example Code and Data Size: These are the sizes for the OS-independent
4668 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4670 version of the code includes the debug output trace mechanism and has a
4672 larger code and data size.
4675 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4676 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4678 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4679 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4682 2) iASL Compiler/Disassembler and Tools:
4684 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4688 Debugger: Enhanced the "tables" command to emit additional information
4690 the current set of ACPI tables, including the owner ID and flags decode.
4692 Debugger: Reimplemented the "unload" command to use the new
4693 AcpiUnloadParentTable external interface. This command was disable
4695 due to need for an unload interface.
4697 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4699 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4701 ----------------------------------------
4702 20 June 2012. Summary of changes for version 20120620:
4705 1) ACPICA Kernel-resident Subsystem:
4707 Implemented support to expand the "implicit notify" feature to allow
4709 devices to be notified by a single GPE. This feature automatically
4711 runtime device notification in the absence of a BIOS-provided GPE control
4712 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4714 provided by ACPICA for Windows compatibility, and is a workaround for
4717 code errors. See the description of the AcpiSetupGpeForWake interface in
4719 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4721 Changed some comments and internal function names to simplify and ensure
4722 correctness of the Linux code translation. No functional changes.
4724 Example Code and Data Size: These are the sizes for the OS-independent
4725 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4727 version of the code includes the debug output trace mechanism and has a
4729 larger code and data size.
4732 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4733 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4735 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4736 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4739 2) iASL Compiler/Disassembler and Tools:
4741 Disassembler: Added support to emit short, commented descriptions for the
4743 predefined names in order to improve the readability of the disassembled
4744 output. ACPICA BZ 959. Changes include:
4745 1) Emit descriptions for all standard predefined names (_INI, _STA,
4748 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4749 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4752 AcpiSrc: Fixed several long-standing Linux code translation issues.
4754 descriptions in function headers are now translated properly to lower
4757 underscores. ACPICA BZ 961. Also fixes translation problems such as
4763 local_fADT -> local_FADT
4764 execute_oSI -> execute_OSI
4766 iASL: Fixed a problem where null bytes were inadvertently emitted into
4770 iASL: Added the existing debug options to the standard help screen. There
4772 no longer two different help screens. ACPICA BZ 957.
4774 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4776 expand some of the descriptions where appropriate.
4778 iASL: Fixed the -ot option (display compile times/statistics). Was not
4780 properly for standard output; only worked for the debug file case.
4782 ----------------------------------------
4783 18 May 2012. Summary of changes for version 20120518:
4786 1) ACPICA Core Subsystem:
4788 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4790 to block until asynchronous events such as notifies and GPEs have
4792 Within ACPICA, it is only called before a notify or GPE handler is
4793 removed/uninstalled. It also may be useful for the host OS within related
4794 drivers such as the Embedded Controller driver. See the ACPICA reference
4796 additional information. ACPICA BZ 868.
4798 ACPI Tables: Added a new error message for a possible overflow failure
4800 the conversion of FADT 32-bit legacy register addresses to internal
4803 bit GAS structure representation. The GAS has a one-byte "bit length"
4805 thus limiting the register length to 255 bits. ACPICA BZ 953.
4807 Example Code and Data Size: These are the sizes for the OS-independent
4808 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4810 version of the code includes the debug output trace mechanism and has a
4812 larger code and data size.
4815 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4816 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4818 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4819 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4822 2) iASL Compiler/Disassembler and Tools:
4824 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4826 This keyword was added late in the ACPI 5.0 release cycle and was not
4827 implemented until now.
4829 Disassembler: Added support for Operation Region externals. Adds missing
4830 support for operation regions that are defined in another table, and
4831 referenced locally via a Field or BankField ASL operator. Now generates
4833 correct External statement.
4835 Disassembler: Several additional fixes for the External() statement
4837 related to some ASL operators. Also, order the External() statements
4838 alphabetically in the disassembler output. Fixes the External()
4841 the Create* field, Alias, and Scope operators:
4842 1) Create* buffer field operators - fix type mismatch warning on
4844 2) Alias - implement missing External support
4845 3) Scope - fix to make sure all necessary externals are emitted.
4847 iASL: Improved pathname support. For include files, merge the prefix
4849 with the file pathname and eliminate unnecessary components. Convert
4850 backslashes in all pathnames to forward slashes, for readability. Include
4852 pathname changes affect both #include and Include() type operators.
4854 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4856 of a valid line by inserting a newline and then returning the EOF during
4858 next call to GetNextLine. Prevents the line from being ignored due to EOF
4861 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4863 and Warning messages are now correctly recognized for both the source
4865 browser and the global error and warning counts.
4867 ----------------------------------------
4868 20 April 2012. Summary of changes for version 20120420:
4871 1) ACPICA Core Subsystem:
4873 Implemented support for multiple notify handlers. This change adds
4876 allow multiple system and device notify handlers on Device, Thermal Zone,
4878 Processor objects. This can simplify the host OS notification
4880 Also re-worked and restructured the entire notify support code to
4882 handler installation, handler removal, notify event queuing, and notify
4883 dispatch to handler(s). Note: there can still only be two global notify
4884 handlers - one for system notifies and one for device notifies. There are
4886 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4887 Moore, Rafael Wysocki.
4889 Fixed a regression in the package repair code where the object reference
4890 count was calculated incorrectly. Regression was introduced in the commit
4891 "Support to add Package wrappers".
4893 Fixed a couple possible memory leaks in the AML parser, in the error
4895 path. Jesper Juhl, Lin Ming.
4897 Example Code and Data Size: These are the sizes for the OS-independent
4898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4899 debug version of the code includes the debug output trace mechanism and
4901 much larger code and data size.
4904 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4905 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4907 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4908 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4911 2) iASL Compiler/Disassembler and Tools:
4913 iASL: Fixed a problem with the resource descriptor support where the
4915 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4916 included in cumulative descriptor offset, resulting in incorrect values
4918 resource tags within resource descriptors appearing after a
4920 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4922 iASL and Preprocessor: Implemented full support for the #line directive
4924 correctly track original source file line numbers through the .i
4926 output file - for error and warning messages.
4928 iASL: Expand the allowable byte constants for address space IDs.
4930 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4931 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4933 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4935 iASL: Add option to completely disable the preprocessor (-Pn).
4937 iASL: Now emit all error/warning messages to standard error (stderr) by
4938 default (instead of the previous stdout).
4940 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4942 for resource descriptor offset fix above. Update/cleanup error output
4943 routines. Enable and send iASL errors/warnings to an error logfile
4944 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4946 several extraneous "unrecognized operator" messages.
4948 ----------------------------------------
4949 20 March 2012. Summary of changes for version 20120320:
4952 1) ACPICA Core Subsystem:
4954 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4955 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4957 does not execute these methods, and therefore these methods are often
4958 untested. It has been seen on some systems where the execution of these
4959 methods causes errors and also prevents the machine from entering S5. It
4961 therefore suggested that host operating systems do not execute these
4963 by default. In the future, perhaps these methods can be optionally
4965 based on the age of the system and/or what is the newest version of
4967 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4969 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4972 Fixed a problem where the length of the local/common FADT was set too
4974 The local FADT table length cannot be set to the common length until the
4975 original length has been examined. There is code that checks the table
4977 and sets various fields appropriately. This can affect older machines
4979 early FADT versions. For example, this can cause inadvertent writes to
4981 CST_CNT register. Julian Anastasov.
4983 Fixed a mapping issue related to a physical table override. Use the
4985 mapping mechanism for tables loaded via the physical override OSL
4987 This allows for early mapping before the virtual memory manager is
4989 Thomas Renninger, Bob Moore.
4991 Enhanced the automatic return-object repair code: Repair a common problem
4993 predefined methods that are defined to return a variable-length Package
4995 sub-objects. If there is only one sub-object, some BIOS ASL code
4997 simply returns the single object instead of a Package with one sub-
4999 This new support will repair this error by wrapping a Package object
5001 the original object, creating the correct and expected Package with one
5003 object. Names that can be repaired in this manner include: _ALR, _CSD,
5005 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
5008 Changed the exception code returned for invalid ACPI paths passed as
5009 parameters to external interfaces such as AcpiEvaluateObject. Was
5010 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
5012 Example Code and Data Size: These are the sizes for the OS-independent
5013 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5015 version of the code includes the debug output trace mechanism and has a
5017 larger code and data size.
5020 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5021 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5023 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
5024 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5027 2) iASL Compiler/Disassembler and Tools:
5029 iASL: Added the infrastructure and initial implementation of a integrated
5031 like preprocessor. This will simplify BIOS development process by
5033 the need for a separate preprocessing step during builds. On Windows, it
5035 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
5036 features including full #define() macro support are still under
5038 These preprocessor directives are supported:
5051 In addition, these new command line options are supported:
5052 -D <symbol> Define symbol for preprocessor use
5053 -li Create preprocessed output file (*.i)
5054 -P Preprocess only and create preprocessor output file (*.i)
5056 Table Compiler: Fixed a problem where the equals operator within an
5058 did not work properly.
5060 Updated iASL to use the current versions of Bison/Flex. Updated the
5062 project file to invoke these tools from the standard location. ACPICA BZ
5065 Flex for Windows: V2.5.4
5066 Bison for Windows: V2.4.1
5068 ----------------------------------------
5069 15 February 2012. Summary of changes for version 20120215:
5072 1) ACPICA Core Subsystem:
5074 There have been some major changes to the sleep/wake support code, as
5075 described below (a - e).
5077 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
5078 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
5079 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
5081 time the _BFS method is called and the _WAK method is called. NOTE: all
5083 must update their wake/resume code or else sleep/wake will not work
5087 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
5089 method. Some machines require that the GPEs are enabled before the _WAK
5091 is executed. Thomas Renninger.
5093 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
5095 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
5097 determine whether the system is rebooting or resuming. Matthew Garrett.
5099 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
5101 match the ACPI specification requirement. Rafael Wysocki.
5103 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
5104 registers within the V5 FADT. This support adds two new files:
5105 hardware/hwesleep.c implements the support for the new registers. Moved
5107 sleep/wake external interfaces to hardware/hwxfsleep.c.
5110 Added a new OSL interface for ACPI table overrides,
5111 AcpiOsPhysicalTableOverride. This interface allows the host to override a
5112 table via a physical address, instead of the logical address required by
5113 AcpiOsTableOverride. This simplifies the host implementation. Initial
5114 implementation by Thomas Renninger. The ACPICA implementation creates a
5116 shared function for table overrides that attempts both a logical and a
5119 Expanded the OSL memory read/write interfaces to 64-bit data
5120 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
5121 transfer support for GAS register structures passed to AcpiRead and
5124 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
5126 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
5128 See the ACPICA reference for details. ACPICA BZ 942. This option removes
5130 10% of the code and 5% of the static data, and the following hardware
5132 features become unavailable:
5133 PM Event and Control registers
5134 SCI interrupt (and handler)
5136 General Purpose Events (GPEs)
5139 FACS table (Waking vectors and Global Lock)
5141 Updated the unix tarball directory structure to match the ACPICA git
5143 tree. This ensures that the generic unix makefiles work properly (in
5144 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
5147 Updated the return value of the _REV predefined method to integer value 5
5149 reflect ACPI 5.0 support.
5151 Moved the external ACPI PM timer interface prototypes to the public
5153 file where they belong.
5155 Example Code and Data Size: These are the sizes for the OS-independent
5156 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5158 version of the code includes the debug output trace mechanism and has a
5160 larger code and data size.
5163 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5164 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5166 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
5167 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
5170 2) iASL Compiler/Disassembler and Tools:
5172 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
5173 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
5174 incorrectly displayed.
5176 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
5179 ----------------------------------------
5180 11 January 2012. Summary of changes for version 20120111:
5183 1) ACPICA Core Subsystem:
5185 Implemented a new mechanism to allow host device drivers to check for
5187 range conflicts with ACPI Operation Regions. Both SystemMemory and
5189 address spaces are supported. A new external interface,
5190 AcpiCheckAddressRange,
5191 allows drivers to check an address range against the ACPI namespace. See
5193 ACPICA reference for additional details. Adds one new file,
5194 utilities/utaddress.c. Lin Ming, Bob Moore.
5196 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
5199 Status registers, update the ACPI 5.0 flags, and update internal data
5200 structures to handle an FADT larger than 256 bytes. The size of the ACPI
5204 Updated all ACPICA copyrights and signons to 2012. Added the 2012
5206 all module headers and signons, including the standard Linux header. This
5207 affects virtually every file in the ACPICA core subsystem, iASL compiler,
5209 all ACPICA utilities.
5211 Example Code and Data Size: These are the sizes for the OS-independent
5212 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5214 version of the code includes the debug output trace mechanism and has a
5216 larger code and data size.
5219 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5220 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5222 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5223 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5226 2) iASL Compiler/Disassembler and Tools:
5228 Disassembler: fixed a problem with the automatic resource tag generation
5229 support. Fixes a problem where the resource tags are inadvertently not
5230 constructed if the table being disassembled contains external references
5232 control methods. Moved the actual construction of the tags to after the
5234 namespace is constructed (after 2nd parse is invoked due to external
5236 method references.) ACPICA BZ 941.
5238 Table Compiler: Make all "generic" operators caseless. These are the
5240 like UINT8, String, etc. Making these caseless improves ease-of-use.
5244 ----------------------------------------
5245 23 November 2011. Summary of changes for version 20111123:
5247 0) ACPI 5.0 Support:
5249 This release contains full support for the ACPI 5.0 specification, as
5252 Reduced Hardware Support:
5253 -------------------------
5255 This support allows for ACPI systems without the usual ACPI hardware.
5257 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
5259 not attempt to initialize or use any of the usual ACPI hardware. Note,
5261 this flag is set, all of the following ACPI hardware is assumed to be not
5262 present and is not initialized or accessed:
5264 General Purpose Events (GPEs)
5265 Fixed Events (PM1a/PM1b and PM Control)
5266 Power Management Timer and Console Buttons (power/sleep)
5267 Real-time Clock Alarm
5269 System Control Interrupt (SCI)
5270 The FACS is assumed to be non-existent
5275 All new tables and updates to existing tables are fully supported in the
5276 ACPICA headers (for use by device drivers), the disassembler, and the
5278 Data Table Compiler. ACPI 5.0 defines these new tables:
5280 BGRT /* Boot Graphics Resource Table */
5281 DRTM /* Dynamic Root of Trust for Measurement table */
5282 FPDT /* Firmware Performance Data Table */
5283 GTDT /* Generic Timer Description Table */
5284 MPST /* Memory Power State Table */
5285 PCCT /* Platform Communications Channel Table */
5286 PMTT /* Platform Memory Topology Table */
5287 RASF /* RAS Feature table */
5289 Operation Regions/SpaceIDs:
5290 ---------------------------
5292 All new operation regions are fully supported by the iASL compiler, the
5293 disassembler, and the ACPICA runtime code (for dispatch to region
5295 The new operation region Space IDs are:
5300 Resource Descriptors:
5301 ---------------------
5303 All new ASL resource descriptors are fully supported by the iASL
5306 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
5308 all new predefined resource tags). New descriptors are:
5317 ASL/AML Operators, New and Modified:
5318 ------------------------------------
5320 One new operator is added, the Connection operator, which is used to
5322 a GeneralPurposeIo or GenericSerialBus resource descriptor with
5324 field objects within an operation region. Several new protocols are
5326 with the AccessAs operator. All are fully supported by the iASL compiler,
5327 disassembler, and runtime ACPICA AML interpreter:
5329 Connection // Declare Field Connection
5331 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
5332 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
5334 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
5335 RawDataBuffer // Data type for Vendor Data
5338 Predefined ASL/AML Objects:
5339 ---------------------------
5341 All new predefined objects/control-methods are supported by the iASL
5343 and the ACPICA runtime validation/repair (arguments and return values.)
5345 predefined names include the following:
5347 Standard Predefined Names (Objects or Control Methods):
5348 _AEI, _CLS, _CPC, _CWS, _DEP,
5349 _DLM, _EVT, _GCP, _CRT, _GWS,
5350 _HRV, _PRE, _PSE, _SRT, _SUB.
5352 Resource Tags (Names used to access individual fields within resource
5354 _DBT, _DPL, _DRS, _END, _FLC,
5355 _IOR, _LIN, _MOD, _PAR, _PHA,
5356 _PIN, _PPI, _POL, _RXL, _SLV,
5357 _SPE, _STB, _TXL, _VEN.
5359 ACPICA External Interfaces:
5360 ---------------------------
5362 Several new interfaces have been defined for use by ACPI-related device
5363 drivers and other host OS services:
5365 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
5367 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
5368 provided by the BIOS. They are intended to be used in conjunction with
5370 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
5371 mutual exclusion with the AML code/interpreter.
5373 AcpiGetEventResources: Returns the (formatted) resource descriptors as
5375 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
5377 resource descriptors associated with hardware-reduced platform events,
5379 to the AcpiGetCurrentResources interface.
5381 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
5382 operation regions, information about the Connection() object and any
5384 length information is passed to the region handler within the Context
5387 AcpiBufferToResource: This interface converts a raw AML buffer containing
5389 resource template or resource descriptor to the ACPI_RESOURCE internal
5391 suitable for use by device drivers. Can be used by an operation region
5393 to convert the Connection() buffer object into a ACPI_RESOURCE.
5395 Miscellaneous/Tools/TestSuites:
5396 -------------------------------
5398 Support for extended _HID names (Four alpha characters instead of three).
5399 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
5400 Support for ACPI 5.0 features in the ASLTS test suite.
5401 Fully updated documentation (ACPICA and iASL reference documents.)
5403 ACPI Table Definition Language:
5404 -------------------------------
5406 Support for this language was implemented and released as a subsystem of
5408 iASL compiler in 2010. (See the iASL compiler User Guide.)
5411 Non-ACPI 5.0 changes for this release:
5412 --------------------------------------
5414 1) ACPICA Core Subsystem:
5416 Fix a problem with operation region declarations where a failure can
5419 the region name and an argument that evaluates to an object (such as the
5420 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
5423 Do not abort an ACPI table load if an invalid space ID is found within.
5425 will be caught later if the offending method is executed. ACPICA BZ 925.
5427 Fixed an issue with the FFixedHW space ID where the ID was not always
5428 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
5430 Fixed a problem with the 32-bit generation of the unix-specific OSL
5431 (osunixxf.c). Lin Ming, ACPICA BZ 936.
5433 Several changes made to enable generation with the GCC 4.6 compiler.
5437 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
5439 field registers out-of-range.
5441 2) iASL Compiler/Disassembler and Tools:
5443 iASL: Implemented the __PATH__ operator, which returns the full pathname
5445 the current source file.
5447 AcpiHelp: Automatically display expanded keyword information for all ASL
5450 Debugger: Add "Template" command to disassemble/dump resource template
5453 Added a new master script to generate and execute the ASLTS test suite.
5454 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5456 iASL: Fix problem with listing generation during processing of the
5458 operator where AML listing was disabled until the entire Switch block was
5461 iASL: Improve support for semicolon statement terminators. Fix "invalid
5462 character" message for some cases when the semicolon is used. Semicolons
5464 now allowed after every <Term> grammar element. ACPICA BZ 927.
5466 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5469 Disassembler: Fix problem with disassembly of the DataTableRegion
5471 where an inadvertent "Unhandled deferred opcode" message could be
5474 3) Example Code and Data Size
5476 These are the sizes for the OS-independent acpica.lib produced by the
5477 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5478 includes the debug output trace mechanism and has a much larger code and
5483 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5484 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5486 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5487 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5489 ----------------------------------------
5490 22 September 2011. Summary of changes for version 20110922:
5494 Support for ACPI 5.0 in ACPICA has been underway for several months and
5496 be released at the same time that ACPI 5.0 is officially released.
5498 The ACPI 5.0 specification is on track for release in the next few
5501 1) ACPICA Core Subsystem:
5503 Fixed a problem where the maximum sleep time for the Sleep() operator was
5504 intended to be limited to two seconds, but was inadvertently limited to
5508 Linux and Unix makefiles: Added header file dependencies to ensure
5510 generation of ACPICA core code and utilities. Also simplified the
5512 considerably through the use of the vpath variable to specify search
5516 2) iASL Compiler/Disassembler and Tools:
5518 iASL: Implemented support to check the access length for all fields
5520 access named Resource Descriptor fields. For example, if a resource field
5522 defined to be two bits, a warning is issued if a CreateXxxxField() is
5524 with an incorrect bit length. This is implemented for all current
5526 descriptor names. ACPICA BZ 930.
5528 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5532 iASL: Fixed a couple of issues associated with variable-length package
5533 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5535 VAR_PACKAGE when these are used as a package length. 2) Allow the
5537 opcode (in addition to PACKAGE) when validating object types for
5541 iASL: Emit statistics for all output files (instead of just the ASL input
5543 AML output). Includes listings, hex files, etc.
5545 iASL: Added -G option to the table compiler to allow the compilation of
5547 ACPI tables. The only part of a table that is required is the standard
5552 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5554 which also adds correct 64-bit support. Also, now all output filenames
5556 completely lower case.
5558 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5559 loading table files. A warning is issued for any such tables. The only
5560 exception is an FADT. This also fixes a possible fault when attempting to
5562 non-AML tables. ACPICA BZ 932.
5564 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5566 missing table terminator could cause a fault when using the -p option.
5568 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5571 3) Example Code and Data Size
5573 These are the sizes for the OS-independent acpica.lib produced by the
5574 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5575 includes the debug output trace mechanism and has a much larger code and
5579 Previous Release (VC 9.0):
5580 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5581 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5582 Current Release (VC 9.0):
5583 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5584 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5587 ----------------------------------------
5588 23 June 2011. Summary of changes for version 20110623:
5590 1) ACPI CA Core Subsystem:
5592 Updated the predefined name repair mechanism to not attempt repair of a
5594 return object if a _PSS object is present. We can only sort the _TSS
5596 package if there is no _PSS within the same scope. This is because if
5599 present, the ACPI specification dictates that the _TSS Power Dissipation
5601 is to be ignored, and therefore some BIOSs leave garbage values in the
5603 Power field(s). In this case, it is best to just return the _TSS package
5605 is. Reported by, and fixed with assistance from Fenghua Yu.
5607 Added an option to globally disable the control method return value
5609 and repair. This runtime option can be used to disable return value
5612 this is causing a problem on a particular machine. Also added an option
5614 AcpiExec (-dr) to set this disable flag.
5616 All makefiles and project files: Major changes to improve generation of
5618 tools. ACPICA BZ 912:
5619 Reduce default optimization levels to improve compatibility
5620 For Linux, add strict-aliasing=0 for gcc 4
5621 Cleanup and simplify use of command line defines
5622 Cleanup multithread library support
5623 Improve usage messages
5625 Linux-specific header: update handling of THREAD_ID and pthread. For the
5627 bit case, improve casting to eliminate possible warnings, especially with
5631 Example Code and Data Size: These are the sizes for the OS-independent
5632 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5634 version of the code includes the debug output trace mechanism and has a
5636 larger code and data size.
5638 Previous Release (VC 9.0):
5639 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5640 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5641 Current Release (VC 9.0):
5642 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5643 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5645 2) iASL Compiler/Disassembler and Tools:
5647 With this release, a new utility named "acpihelp" has been added to the
5649 package. This utility summarizes the ACPI specification chapters for the
5651 and AML languages. It generates under Linux/Unix as well as Windows, and
5652 provides the following functionality:
5653 Find/display ASL operator(s) -- with description and syntax.
5654 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5655 Find/display ACPI predefined name(s) -- with description, number
5656 of arguments, and the return value data type.
5657 Find/display AML opcode name(s) -- with opcode, arguments, and
5659 Decode/display AML opcode -- with opcode name, arguments, and
5662 Service Layers: Make multi-thread support configurable. Conditionally
5664 the multi-thread support so that threading libraries will not be linked
5667 necessary. The only tool that requires multi-thread support is AcpiExec.
5669 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5671 Bison appear to want the interface to yyerror to be a const char * (or at
5672 least this is a problem when generating iASL on some systems.) ACPICA BZ
5676 Tools: Fix for systems where O_BINARY is not defined. Only used for
5678 versions of the tools.
5680 ----------------------------------------
5681 27 May 2011. Summary of changes for version 20110527:
5683 1) ACPI CA Core Subsystem:
5685 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5687 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5688 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5689 (PSDT is now obsolete.)
5690 2) We added support for OEMx tables, signature "OEM" plus a fourth
5691 "don't care" character.
5692 3) Valid tables were encountered with a null signature, so we just
5693 gave up on validating the signature, (05/2008).
5694 4) We encountered non-AML tables such as the MADT, which caused
5695 interpreter errors and kernel faults. So now, we once again allow
5696 only SSDT, OEMx, and now, also a null signature. (05/2011).
5698 Added the missing _TDL predefined name to the global name list in order
5700 enable validation. Affects both the core ACPICA code and the iASL
5703 Example Code and Data Size: These are the sizes for the OS-independent
5704 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5706 version of the code includes the debug output trace mechanism and has a
5708 larger code and data size.
5710 Previous Release (VC 9.0):
5711 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5712 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5713 Current Release (VC 9.0):
5714 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5715 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5717 2) iASL Compiler/Disassembler and Tools:
5719 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5721 debugger command line. This adds support beyond simple integers --
5723 Strings, Buffers, and Packages. Includes support for nested packages.
5724 Increased the default command line buffer size to accommodate these
5726 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5728 Debugger/AcpiExec: Implemented support for "default" method arguments for
5730 Execute/Debug command. Now, the debugger will always invoke a control
5732 with the required number of arguments -- even if the command line
5734 none or insufficient arguments. It uses default integer values for any
5736 arguments. Also fixes a bug where only six method arguments maximum were
5737 supported instead of the required seven.
5739 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5741 also return status in order to prevent buffer overruns. See the ACPICA
5742 reference for details and syntax. ACPICA BZ 921
5744 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5745 makefiles to simplify support for the two different but similar parser
5746 generators, bison and yacc.
5748 Updated the generic unix makefile for gcc 4. The default gcc version is
5750 expected to be 4 or greater, since options specific to gcc 4 are used.
5752 ----------------------------------------
5753 13 April 2011. Summary of changes for version 20110413:
5755 1) ACPI CA Core Subsystem:
5757 Implemented support to execute a so-called "orphan" _REG method under the
5759 device. This change will force the execution of a _REG method underneath
5762 device even if there is no corresponding operation region of type
5763 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5764 compatible with Windows behavior. ACPICA BZ 875.
5766 Added more predefined methods that are eligible for automatic NULL
5768 element removal. This change adds another group of predefined names to
5771 of names that can be repaired by having NULL package elements dynamically
5772 removed. This group are those methods that return a single variable-
5774 package containing simple data types such as integers, buffers, strings.
5776 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5779 and _TZD. ACPICA BZ 914.
5781 Split and segregated all internal global lock functions to a new file,
5784 Updated internal address SpaceID for DataTable regions. Moved this
5787 id in preparation for ACPI 5.0 changes that will include some new space
5790 change should not affect user/host code.
5792 Example Code and Data Size: These are the sizes for the OS-independent
5794 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5796 the code includes the debug output trace mechanism and has a much larger
5801 Previous 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
5804 Current Release (VC 9.0):
5805 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5806 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5808 2) iASL Compiler/Disassembler and Tools:
5810 iASL/DTC: Major update for new grammar features. Allow generic data types
5812 custom ACPI tables. Field names are now optional. Any line can be split
5814 multiple lines using the continuation char (\). Large buffers now use
5816 continuation character(s) and no colon on the continuation lines. See the
5818 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5821 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5823 Since the parser stuffs a "zero" as the return value for these statements
5826 the underlying AML grammar), they were seen as "return with value" by the
5828 semantic checking. They are now seen correctly as "null" return
5831 iASL: Check if a_REG declaration has a corresponding Operation Region.
5833 check for each _REG to ensure that there is in fact a corresponding
5835 region declaration in the same scope. If not, the _REG method is not very
5837 since it probably won't be executed. ACPICA BZ 915.
5839 iASL/DTC: Finish support for expression evaluation. Added a new
5842 that implements c-style operator precedence and parenthesization. ACPICA
5846 Disassembler/DTC: Remove support for () and <> style comments in data
5849 that DTC has full expression support, we don't want to have comment
5852 start with a parentheses or a less-than symbol. Now, only the standard /*
5855 comments are supported, as well as the bracket [] comments.
5857 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5859 headers in the acpidump file. Update the header validation to support
5861 tables. Problem introduced in previous AcpiXtract version in the change
5863 support "wrong checksum" error messages emitted by acpidump utility.
5865 iASL: Add a * option to generate all template files (as a synonym for
5869 "iasl -T *" or "iasl -T ALL".
5871 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5873 abort the compiler on "fatal" errors, simply should abort the current
5875 This allows multiple compiles with a single (possibly wildcard) compiler
5878 ----------------------------------------
5879 16 March 2011. Summary of changes for version 20110316:
5881 1) ACPI CA Core Subsystem:
5883 Fixed a problem caused by a _PRW method appearing at the namespace root
5885 during the setup of wake GPEs. A fault could occur if a _PRW directly
5888 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5890 Implemented support for "spurious" Global Lock interrupts. On some
5892 global lock interrupt can occur without the pending flag being set. Upon
5895 interrupt, we now ensure that a thread is actually waiting for the lock
5897 signaling GL availability. Rafael Wysocki, Bob Moore.
5899 Example Code and Data Size: These are the sizes for the OS-independent
5901 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5903 the code includes the debug output trace mechanism and has a much larger
5908 Previous Release (VC 9.0):
5909 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5910 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5911 Current Release (VC 9.0):
5912 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5913 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5915 2) iASL Compiler/Disassembler and Tools:
5917 Implemented full support for the "SLIC" ACPI table. Includes support in
5919 header files, disassembler, table compiler, and template generator. Bob
5923 AcpiXtract: Correctly handle embedded comments and messages from
5925 Apparently some or all versions of acpidump will occasionally emit a
5928 "Wrong checksum", etc., into the dump file. This was causing problems for
5929 AcpiXtract. ACPICA BZ 905.
5931 iASL: Fix the Linux makefile by removing an inadvertent double file
5935 AcpiExec: Update installation of operation region handlers. Install one
5937 for a user-defined address space. This is used by the ASL test suite
5940 ----------------------------------------
5941 11 February 2011. Summary of changes for version 20110211:
5943 1) ACPI CA Core Subsystem:
5945 Added a mechanism to defer _REG methods for some early-installed
5947 Most user handlers should be installed before call to
5948 AcpiEnableSubsystem.
5949 However, Event handlers and region handlers should be installed after
5950 AcpiInitializeObjects. Override handlers for the "default" regions should
5952 installed early, however. This change executes all _REG methods for the
5953 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5954 chicken/egg issues between them. ACPICA BZ 848.
5956 Implemented an optimization for GPE detection. This optimization will
5958 ignore GPE registers that contain no enabled GPEs -- there is no need to
5959 read the register since this information is available internally. This
5960 becomes more important on machines with a large GPE space. ACPICA
5962 884. Lin Ming. Suggestion from Joe Liu.
5964 Removed all use of the highly unreliable FADT revision field. The
5966 number in the FADT has been found to be completely unreliable and cannot
5968 trusted. Only the actual table length can be used to infer the version.
5970 change updates the ACPICA core and the disassembler so that both no
5972 even look at the FADT version and instead depend solely upon the FADT
5975 Fix an unresolved name issue for the no-debug and no-error-message source
5976 generation cases. The _AcpiModuleName was left undefined in these cases,
5978 it is actually needed as a parameter to some interfaces. Define
5979 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5981 Split several large files (makefiles and project files updated)
5982 utglobal.c -> utdecode.c
5983 dbcomds.c -> dbmethod.c dbnames.c
5984 dsopcode.c -> dsargs.c dscontrol.c
5985 dsload.c -> dsload2.c
5986 aslanalyze.c -> aslbtypes.c aslwalks.c
5988 Example Code and Data Size: These are the sizes for the OS-independent
5989 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5990 debug version of the code includes the debug output trace mechanism and
5992 a much larger code and data size.
5994 Previous Release (VC 9.0):
5995 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5996 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5997 Current Release (VC 9.0):
5998 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5999 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6001 2) iASL Compiler/Disassembler and Tools:
6003 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
6004 These are useful C-style macros with the standard definitions. ACPICA
6007 iASL/DTC: Added support for integer expressions and labels. Support for
6009 expressions for all integer fields in all ACPI tables. Support for labels
6011 "generic" portions of tables such as UEFI. See the iASL reference manual.
6013 Debugger: Added a command to display the status of global handlers. The
6014 "handlers" command will display op region, fixed event, and miscellaneous
6015 global handlers. installation status -- and for op regions, whether
6017 or user-installed handler will be used.
6019 iASL: Warn if reserved method incorrectly returns a value. Many
6021 names are defined such that they do not return a value. If implemented as
6023 method, issue a warning if such a name explicitly returns a value. ACPICA
6026 iASL: Added detection of GPE method name conflicts. Detects a conflict
6028 there are two GPE methods of the form _Lxy and _Exy in the same scope.
6030 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
6032 iASL/DTC: Fixed a couple input scanner issues with comments and line
6033 numbers. Comment remover could get confused and miss a comment ending.
6035 a problem with line counter maintenance.
6037 iASL/DTC: Reduced the severity of some errors from fatal to error. There
6039 no need to abort on simple errors within a field definition.
6041 Debugger: Simplified the output of the help command. All help output now
6043 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
6045 ----------------------------------------
6046 12 January 2011. Summary of changes for version 20110112:
6048 1) ACPI CA Core Subsystem:
6050 Fixed a race condition between method execution and namespace walks that
6052 possibly cause a fault. The problem was apparently introduced in version
6053 20100528 as a result of a performance optimization that reduces the
6056 namespace walks upon method exit by using the delete_namespace_subtree
6057 function instead of the delete_namespace_by_owner function used
6059 Bug is a missing namespace lock in the delete_namespace_subtree function.
6060 dana.myers@oracle.com
6062 Fixed several issues and a possible fault with the automatic "serialized"
6063 method support. History: This support changes a method to "serialized" on
6065 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
6066 possibility that it cannot handle reentrancy. This fix repairs a couple
6068 issues seen in the field, especially on machines with many cores:
6070 1) Delete method children only upon the exit of the last thread,
6071 so as to not delete objects out from under other running threads
6072 (and possibly causing a fault.)
6073 2) Set the "serialized" bit for the method only upon the exit of the
6074 Last thread, so as to not cause deadlock when running threads
6076 3) Cleanup the use of the AML "MethodFlags" and internal method flags
6077 so that there is no longer any confusion between the two.
6079 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
6081 Debugger: Now lock the namespace for duration of a namespace dump.
6083 issues if the namespace is changing dynamically underneath the debugger.
6084 Especially affects temporary namespace nodes, since the debugger displays
6087 Updated the ordering of include files. The ACPICA headers should appear
6088 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
6090 any necessary compiler-specific defines, etc. Affects the ACPI-related
6094 Updated all ACPICA copyrights and signons to 2011. Added the 2011
6096 to all module headers and signons, including the Linux header. This
6098 virtually every file in the ACPICA core subsystem, iASL compiler, and all
6101 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
6102 project files for VC++ 6.0 are now obsolete. New project files can be
6104 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
6107 Example Code and Data Size: These are the sizes for the OS-independent
6108 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
6109 debug version of the code includes the debug output trace mechanism and
6111 much larger code and data size.
6113 Previous Release (VC 6.0):
6114 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6115 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6116 Current Release (VC 9.0):
6117 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
6118 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
6120 2) iASL Compiler/Disassembler and Tools:
6122 iASL: Added generic data types to the Data Table compiler. Add "generic"
6124 types such as UINT32, String, Unicode, etc., to simplify the generation
6126 platform-defined tables such as UEFI. Lin Ming.
6128 iASL: Added listing support for the Data Table Compiler. Adds listing
6130 (-l) to display actual binary output for each line of input code.
6132 ----------------------------------------
6133 09 December 2010. Summary of changes for version 20101209:
6135 1) ACPI CA Core Subsystem:
6137 Completed the major overhaul of the GPE support code that was begun in
6139 2010. Major features include: removal of _PRW execution in ACPICA (host
6140 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
6141 changes to existing interfaces, simplification of GPE handler operation,
6143 a handful of new interfaces:
6149 One new file, evxfgpe.c to consolidate all external GPE interfaces.
6151 See the ACPICA Programmer Reference for full details and programming
6152 information. See the new section 4.4 "General Purpose Event (GPE)
6154 for a full overview, and section 8.7 "ACPI General Purpose Event
6156 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
6158 Bob Moore, Rafael Wysocki.
6160 Implemented a new GPE feature for Windows compatibility, the "Implicit
6162 GPE Notify". This feature will automatically issue a Notify(2) on a
6164 when a Wake GPE is received if there is no corresponding GPE method or
6165 handler. ACPICA BZ 870.
6167 Fixed a problem with the Scope() operator during table parse and load
6169 During load phase (table load or method execution), the scope operator
6171 not enter the target into the namespace. Instead, it should open a new
6173 at the target location. Linux BZ 19462, ACPICA BZ 882.
6175 Example Code and Data Size: These are the sizes for the OS-independent
6176 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6177 debug version of the code includes the debug output trace mechanism and
6179 much larger code and data size.
6182 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
6183 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
6185 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6186 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6188 2) iASL Compiler/Disassembler and Tools:
6190 iASL: Relax the alphanumeric restriction on _CID strings. These strings
6192 "bus-specific" per the ACPI specification, and therefore any characters
6194 acceptable. The only checks that can be performed are for a null string
6196 perhaps for a leading asterisk. ACPICA BZ 886.
6198 iASL: Fixed a problem where a syntax error that caused a premature EOF
6199 condition on the source file emitted a very confusing error message. The
6200 premature EOF is now detected correctly. ACPICA BZ 891.
6202 Disassembler: Decode the AccessSize within a Generic Address Structure
6204 access, word access, etc.) Note, this field does not allow arbitrary bit
6205 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
6207 New: AcpiNames utility - Example namespace dump utility. Shows an example
6209 ACPICA configuration for a minimal namespace dump utility. Uses table and
6210 namespace managers, but no AML interpreter. Does not add any
6212 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
6213 partition and configure ACPICA. ACPICA BZ 883.
6215 AML Debugger: Increased the debugger buffer size for method return
6217 Was 4K, increased to 16K. Also enhanced error messages for debugger
6219 execution, including the buffer overflow case.
6221 ----------------------------------------
6222 13 October 2010. Summary of changes for version 20101013:
6224 1) ACPI CA Core Subsystem:
6226 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
6228 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
6229 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
6231 Changed the type of the predefined namespace object _TZ from ThermalZone
6233 Device. This was found to be confusing to the host software that
6235 the various thermal zones, since _TZ is not really a ThermalZone.
6238 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
6241 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
6242 string is "Windows 2006 SP2".
6244 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
6246 code automatically repairs _HID-related strings, this type of code is no
6247 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
6250 Example Code and Data Size: These are the sizes for the OS-independent
6251 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6252 debug version of the code includes the debug output trace mechanism and
6254 much larger code and data size.
6257 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6258 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6260 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6261 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6263 2) iASL Compiler/Disassembler and Tools:
6265 iASL: Implemented additional compile-time validation for _HID strings.
6267 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
6270 the string must be exactly seven or eight characters. For both _HID and
6272 strings, all characters must be alphanumeric. ACPICA BZ 874.
6274 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
6275 descriptors that are mostly or all zeros, with the expectation that they
6277 be filled in at runtime. iASL now allows this as long as there is a
6279 tag" (name) associated with the descriptor, which gives the ASL a handle
6280 needed to modify the descriptor. ACPICA BZ 873.
6282 Added single-thread support to the generic Unix application OSL.
6284 for iASL support, this change removes the use of semaphores in the
6286 threaded ACPICA tools/applications - increasing performance. The
6287 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
6288 option. ACPICA BZ 879.
6290 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
6292 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
6294 iASL: Moved all compiler messages to a new file, aslmessages.h.
6296 ----------------------------------------
6297 15 September 2010. Summary of changes for version 20100915:
6299 1) ACPI CA Core Subsystem:
6301 Removed the AcpiOsDerivePciId OSL interface. The various host
6303 of this function were not OS-dependent and are now obsolete and can be
6304 removed from all host OSLs. This function has been replaced by
6305 AcpiHwDerivePciId, which is now part of the ACPICA core code.
6306 AcpiHwDerivePciId has been implemented without recursion. Adds one new
6307 module, hwpci.c. ACPICA BZ 857.
6309 Implemented a dynamic repair for _HID and _CID strings. The following
6310 problems are now repaired at runtime: 1) Remove a leading asterisk in the
6311 string, and 2) the entire string is uppercased. Both repairs are in
6312 accordance with the ACPI specification and will simplify host driver
6316 The ACPI_THREAD_ID type is no longer configurable, internally it is now
6317 always UINT64. This simplifies the ACPICA code, especially any printf
6319 UINT64 is the only common data type for all thread_id types across all
6320 operating systems. It is now up to the host OSL to cast the native
6322 type to UINT64 before returning the value to ACPICA (via
6324 Lin Ming, Bob Moore.
6326 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
6328 keyword is not standard across compilers, and this type allows inline to
6330 configured on a per-compiler basis. Lin Ming.
6332 Made the system global AcpiGbl_SystemAwakeAndRunning publically
6334 Added an extern for this boolean in acpixf.h. Some hosts utilize this
6336 during suspend/restore operations. ACPICA BZ 869.
6338 All code that implements error/warning messages with the "ACPI:" prefix
6340 been moved to a new module, utxferror.c.
6342 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
6344 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
6346 Example Code and Data Size: These are the sizes for the OS-independent
6347 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6348 debug version of the code includes the debug output trace mechanism and
6350 much larger code and data size.
6353 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6354 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6356 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6357 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6359 2) iASL Compiler/Disassembler and Tools:
6361 iASL/Disassembler: Write ACPI errors to stderr instead of the output
6363 This keeps the output files free of random error messages that may
6365 from within the namespace/interpreter code. Used this opportunity to
6367 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
6368 866. Lin Ming, Bob Moore.
6370 Tools: update some printfs for ansi warnings on size_t. Handle width
6372 of size_t on 32-bit versus 64-bit generations. Lin Ming.
6374 ----------------------------------------
6375 06 August 2010. Summary of changes for version 20100806:
6377 1) ACPI CA Core Subsystem:
6379 Designed and implemented a new host interface to the _OSI support code.
6381 will allow the host to dynamically add or remove multiple _OSI strings,
6383 well as install an optional handler that is called for each _OSI
6385 Also added a new AML debugger command, 'osi' to display and modify the
6387 _OSI string table, and test support in the AcpiExec utility. See the
6389 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
6391 AcpiInstallInterface - Add an _OSI string.
6392 AcpiRemoveInterface - Delete an _OSI string.
6393 AcpiInstallInterfaceHandler - Install optional _OSI handler.
6395 AcpiOsValidateInterface - no longer used.
6397 source/components/utilities/utosi.c
6399 Re-introduced the support to enable multi-byte transfers for Embedded
6400 Controller (EC) operation regions. A reported problem was found to be a
6402 in the host OS, not in the multi-byte support. Previously, the maximum
6404 size passed to the EC operation region handler was a single byte. There
6406 often EC Fields larger than one byte that need to be transferred, and it
6408 useful for the EC driver to lock these as a single transaction. This
6410 enables single transfers larger than 8 bits. This effectively changes the
6411 access to the EC space from ByteAcc to AnyAcc, and will probably require
6412 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
6414 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
6416 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
6417 prototype in acpiosxf.h had the output value pointer as a (void *).
6418 It should be a (UINT64 *). This may affect some host OSL code.
6420 Fixed a couple problems with the recently modified Linux makefiles for
6422 and AcpiExec. These new makefiles place the generated object files in the
6423 local directory so that there can be no collisions between the files that
6425 shared between them that are compiled with different options.
6427 Example Code and Data Size: These are the sizes for the OS-independent
6428 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6429 debug version of the code includes the debug output trace mechanism and
6431 much larger code and data size.
6434 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6435 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6437 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6438 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6440 2) iASL Compiler/Disassembler and Tools:
6442 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
6444 namespace from and disassemble an entire group of AML files. Useful for
6445 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
6447 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
6449 iASL: Allow multiple invocations of -e option. This change allows
6451 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6455 ----------------------------------------
6456 02 July 2010. Summary of changes for version 20100702:
6458 1) ACPI CA Core Subsystem:
6460 Implemented several updates to the recently added GPE reference count
6461 support. The model for "wake" GPEs is changing to give the host OS
6463 control of these GPEs. Eventually, the ACPICA core will not execute any
6465 methods, since the host already must execute them. Also, additional
6467 were made to help ensure that the reference counts are kept in proper
6468 synchronization with reality. Rafael J. Wysocki.
6470 1) Ensure that GPEs are not enabled twice during initialization.
6471 2) Ensure that GPE enable masks stay in sync with the reference count.
6472 3) Do not inadvertently enable GPEs when writing GPE registers.
6473 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6474 interface. This interface will set or clear individual GPEs for wakeup.
6475 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6477 are now used for "runtime" GPEs only.
6479 Changed the behavior of the GPE install/remove handler interfaces. The
6482 no longer disabled during this process, as it was found to cause problems
6484 some machines. Rafael J. Wysocki.
6486 Reverted a change introduced in version 20100528 to enable Embedded
6487 Controller multi-byte transfers. This change was found to cause problems
6489 Index Fields and possibly Bank Fields. It will be reintroduced when these
6490 problems have been resolved.
6492 Fixed a problem with references to Alias objects within Package Objects.
6494 reference to an Alias within the definition of a Package was not always
6495 resolved properly. Aliases to objects like Processors, Thermal zones,
6497 were resolved to the actual object instead of a reference to the object
6500 should be. Package objects are only allowed to contain integer, string,
6501 buffer, package, and reference objects. Redhat bugzilla 608648.
6503 Example Code and Data Size: These are the sizes for the OS-independent
6504 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6505 debug version of the code includes the debug output trace mechanism and
6507 much larger code and data size.
6510 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6511 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6513 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6514 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6516 2) iASL Compiler/Disassembler and Tools:
6518 iASL: Implemented a new compiler subsystem to allow definition and
6519 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6521 are called "ACPI Data Tables", and the new compiler is the "Data Table
6522 Compiler". This compiler is intended to simplify the existing error-prone
6523 process of creating these tables for the BIOS, as well as allowing the
6524 disassembly, modification, recompilation, and override of existing ACPI
6526 tables. See the iASL User Guide for detailed information.
6528 iASL: Implemented a new Template Generator option in support of the new
6530 Table Compiler. This option will create examples of all known ACPI tables
6531 that can be used as the basis for table development. See the iASL
6532 documentation and the -T option.
6534 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6537 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6538 object files in the local directory so that there can be no collisions
6539 between the shared files between them that are generated with different
6542 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6544 the #define __APPLE__ to enable this support.
6546 ----------------------------------------
6547 28 May 2010. Summary of changes for version 20100528:
6549 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6550 available at www.acpi.info. This is primarily an errata release.
6552 1) ACPI CA Core Subsystem:
6554 Undefined ACPI tables: We are looking for the definitions for the
6556 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6558 Implemented support to enable multi-byte transfers for Embedded
6560 (EC) operation regions. Previously, the maximum data size passed to the
6562 operation region handler was a single byte. There are often EC Fields
6564 than one byte that need to be transferred, and it is useful for the EC
6566 to lock these as a single transaction. This change enables single
6568 larger than 8 bits. This effectively changes the access to the EC space
6570 ByteAcc to AnyAcc, and will probably require changes to the host OS
6572 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6574 transfers. Alexey Starikovskiy, Lin Ming
6576 Implemented a performance enhancement for namespace search and access.
6578 change enhances the performance of namespace searches and walks by adding
6580 backpointer to the parent in each namespace node. On large namespaces,
6582 change can improve overall ACPI performance by up to 9X. Adding a pointer
6584 each namespace node increases the overall size of the internal namespace
6586 about 5%, since each namespace entry usually consists of both a namespace
6587 node and an ACPI operand object. However, this is the first growth of the
6588 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6590 Implemented a performance optimization that reduces the number of
6592 walks. On control method exit, only walk the namespace if the method is
6594 to have created namespace objects outside of its local scope. Previously,
6596 entire namespace was traversed on each control method exit. This change
6598 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6601 Added support to truncate I/O addresses to 16 bits for Windows
6603 Some ASL code has been seen in the field that inadvertently has bits set
6604 above bit 15. This feature is optional and is enabled if the BIOS
6606 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6609 Added support to limit the maximum time for the ASL Sleep() operator. To
6610 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6611 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6614 Added run-time validation support for the _WDG and_WED Microsoft
6616 methods. These objects are defined by "Windows Instrumentation", and are
6618 part of the ACPI spec. ACPICA BZ 860.
6620 Expanded all statistic counters used during namespace and device
6621 initialization from 16 to 32 bits in order to support very large
6624 Replaced all instances of %d in printf format specifiers with %u since
6626 all integers in ACPICA are unsigned.
6628 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6632 Example Code and Data Size: These are the sizes for the OS-independent
6633 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6634 debug version of the code includes the debug output trace mechanism and
6636 much larger code and data size.
6639 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6640 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6642 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6643 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6645 2) iASL Compiler/Disassembler and Tools:
6647 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6648 methods. These objects are defined by "Windows Instrumentation", and are
6650 part of the ACPI spec. ACPICA BZ 860.
6652 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6653 option will disable the tracking mechanism, which improves performance
6656 AcpiExec: Restructured the command line options into -d (disable) and -e
6659 ----------------------------------------
6660 28 April 2010. Summary of changes for version 20100428:
6662 1) ACPI CA Core Subsystem:
6664 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6665 including FADT-based and GPE Block Devices, execute any _PRW methods in
6667 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6668 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6669 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6670 Devices. Provides compatibility with other ACPI implementations. Two new
6671 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6674 Fixed a regression introduced in version 20100331 within the table
6676 where initial table loading could fail. This was introduced in the fix
6678 AcpiReallocateRootTable. Also, renamed some of fields in the table
6680 data structures to clarify their meaning and use.
6682 Fixed a possible allocation overrun during internal object copy in
6683 AcpiUtCopySimpleObject. The original code did not correctly handle the
6685 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6688 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6689 possible access beyond end-of-allocation. Also, now fully validate
6691 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6693 Example Code and Data Size: These are the sizes for the OS-independent
6694 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6695 debug version of the code includes the debug output trace mechanism and
6697 much larger code and data size.
6700 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6701 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6703 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6704 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6706 2) iASL Compiler/Disassembler and Tools:
6708 iASL: Implemented Min/Max/Len/Gran validation for address resource
6709 descriptors. This change implements validation for the address fields
6711 are common to all address-type resource descriptors. These checks are
6712 implemented: Checks for valid Min/Max, length within the Min/Max window,
6713 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6715 table 6-40 in the ACPI 4.0a specification. Also split the large
6717 and aslrestype2.c files into five new files. ACPICA BZ 840.
6719 iASL: Added support for the _Wxx predefined names. This support was
6721 and these names were not recognized by the compiler as valid predefined
6722 names. ACPICA BZ 851.
6724 iASL: Added an error for all predefined names that are defined to return
6726 value and thus must be implemented as Control Methods. These include all
6728 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6729 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6731 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6733 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6735 dynamically loaded via the Load() operator. Also cleaned up output for
6738 ta and -tc options. ACPICA BZ 853.
6740 Tests: Added a new file with examples of extended iASL error checking.
6741 Demonstrates the advanced error checking ability of the iASL compiler.
6742 Available at tests/misc/badcode.asl.
6744 ----------------------------------------
6745 31 March 2010. Summary of changes for version 20100331:
6747 1) ACPI CA Core Subsystem:
6749 Completed a major update for the GPE support in order to improve support
6751 shared GPEs and to simplify both host OS and ACPICA code. Added a
6753 count mechanism to support shared GPEs that require multiple device
6755 Several external interfaces have changed. One external interface has been
6756 removed. One new external interface was added. Most of the GPE external
6757 interfaces now use the GPE spinlock instead of the events mutex (and the
6758 Flags parameter for many GPE interfaces has been removed.) See the
6760 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6762 Wysocki. ACPICA BZ 831.
6765 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6771 Implemented write support for DataTable operation regions. These regions
6773 defined via the DataTableRegion() operator. Previously, only read support
6775 implemented. The ACPI specification allows DataTableRegions to be
6779 Implemented a new subsystem option to force a copy of the DSDT to local
6780 memory. Optionally copy the entire DSDT to local memory (instead of
6782 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6784 the original DSDT, creating the need for this option. Default is FALSE,
6788 Implemented detection of a corrupted or replaced DSDT. This change adds
6789 support to detect a DSDT that has been corrupted and/or replaced from
6791 the OS (by firmware). This is typically catastrophic for the system, but
6793 been seen on some machines. Once this problem has been detected, the DSDT
6794 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6796 Fixed two problems with AcpiReallocateRootTable during the root table
6798 When copying the root table to the new allocation, the length used was
6799 incorrect. The new size was used instead of the current table size,
6801 too much data was copied. Also, the count of available slots for ACPI
6803 was not set correctly. Alexey Starikovskiy, Bob Moore.
6805 Example Code and Data Size: These are the sizes for the OS-independent
6806 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6807 debug version of the code includes the debug output trace mechanism and
6809 much larger code and data size.
6812 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6813 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6815 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6816 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6818 2) iASL Compiler/Disassembler and Tools:
6820 iASL: Implement limited typechecking for values returned from predefined
6821 control methods. The type of any returned static (unnamed) object is now
6822 validated. For example, Return(1). ACPICA BZ 786.
6824 iASL: Fixed a predefined name object verification regression. Fixes a
6826 introduced in version 20100304. An error is incorrectly generated if a
6827 predefined name is declared as a static named object with a value defined
6828 using the keywords "Zero", "One", or "Ones". Lin Ming.
6830 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6832 reducing the requested registry access rights. ACPICA BZ 842.
6834 Disassembler: fixed a possible fault when generating External()
6836 Introduced in commit ae7d6fd: Properly handle externals with parent-
6838 (carat). Fixes a string length allocation calculation. Lin Ming.
6840 ----------------------------------------
6841 04 March 2010. Summary of changes for version 20100304:
6843 1) ACPI CA Core Subsystem:
6845 Fixed a possible problem with the AML Mutex handling function
6846 AcpiExReleaseMutex where the function could fault under the very rare
6847 condition when the interpreter has blocked, the interpreter lock is
6849 the interpreter is then reentered via the same thread, and attempts to
6850 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6854 Implemented additional configuration support for the AML "Debug Object".
6855 Output from the debug object can now be enabled via a global variable,
6856 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6858 This debug output is now available in the release version of ACPICA
6860 of just the debug version. Also, the entire debug output module can now
6862 configured out of the ACPICA build if desired. One new file added,
6863 executer/exdebug.c. Lin Ming, Bob Moore.
6865 Added header support for the ACPI MCHI table (Management Controller Host
6866 Interface Table). This table was added in ACPI 4.0, but the defining
6868 has only recently become available.
6870 Standardized output of integer values for ACPICA warnings/errors. Always
6872 0x prefix for hex output, always use %u for unsigned integer decimal
6874 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6876 invocations.) These invocations were converted from the original
6877 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6879 Example Code and Data Size: These are the sizes for the OS-independent
6880 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6881 debug version of the code includes the debug output trace mechanism and
6883 much larger code and data size.
6886 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6887 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6889 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6890 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6892 2) iASL Compiler/Disassembler and Tools:
6894 iASL: Implemented typechecking support for static (non-control method)
6895 predefined named objects that are declared with the Name() operator. For
6896 example, the type of this object is now validated to be of type Integer:
6897 Name(_BBN, 1). This change migrates the compiler to using the core
6899 name table instead of maintaining a local version. Added a new file,
6900 aslpredef.c. ACPICA BZ 832.
6902 Disassembler: Added support for the ACPI 4.0 MCHI table.
6904 ----------------------------------------
6905 21 January 2010. Summary of changes for version 20100121:
6907 1) ACPI CA Core Subsystem:
6909 Added the 2010 copyright to all module headers and signons. This affects
6910 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6911 tools/utilities, and the test suites.
6913 Implemented a change to the AcpiGetDevices interface to eliminate
6915 invocations of the _STA method. In the case where a specific _HID is
6916 requested, do not run _STA until a _HID match is found. This eliminates
6917 potentially dozens of _STA calls during a search for a particular
6919 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6921 Implemented an additional repair for predefined method return values.
6923 to repair unexpected NULL elements within returned Package objects.
6926 Integer of value zero, a NULL String, or a zero-length Buffer as
6928 ACPICA BZ 818. Lin Ming, Bob Moore.
6930 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6932 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6934 64-bit AML integers). It is now obsolete and this change removes it from
6936 ACPICA code base, replaced by UINT64. The original typedef has been
6938 for now for compatibility with existing device driver code. ACPICA BZ
6941 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6943 the parse tree object.
6945 Added additional warning options for the gcc-4 generation. Updated the
6947 accordingly. This includes some code restructuring to eliminate
6949 code, elimination of some gotos, elimination of unused return values,
6951 additional casting, and removal of redundant declarations.
6953 Example Code and Data Size: These are the sizes for the OS-independent
6954 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6955 debug version of the code includes the debug output trace mechanism and
6957 much larger code and data size.
6960 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6961 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6963 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6964 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6966 2) iASL Compiler/Disassembler and Tools:
6968 No functional changes for this release.
6970 ----------------------------------------
6971 14 December 2009. Summary of changes for version 20091214:
6973 1) ACPI CA Core Subsystem:
6975 Enhanced automatic data type conversions for predefined name repairs.
6977 change expands the automatic repairs/conversions for predefined name
6979 values to make Integers, Strings, and Buffers fully interchangeable.
6982 Buffer can be converted to a Package of Integers if necessary. The
6984 module was completely restructured. Lin Ming, Bob Moore.
6986 Implemented automatic removal of null package elements during predefined
6988 repairs. This change will automatically remove embedded and trailing NULL
6989 package elements from returned package objects that are defined to
6992 variable number of sub-packages. The driver is then presented with a
6994 with no null elements to deal with. ACPICA BZ 819.
6996 Implemented a repair for the predefined _FDE and _GTM names. The expected
6997 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6999 possible problems (both seen in the field), where a package of integers
7001 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
7004 Implemented additional module-level code support. This change will
7006 execute module-level code that is not at the root of the namespace (under
7008 Device object, etc.). Now executes the code within the current scope
7010 of the root. ACPICA BZ 762. Lin Ming.
7012 Fixed possible mutex acquisition errors when running _REG methods. Fixes
7014 problem where mutex errors can occur when running a _REG method that is
7016 the same scope as a method-defined operation region or an operation
7018 under a module-level IF block. This type of code is rare, so the problem
7020 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
7022 Fixed a possible memory leak during module-level code execution. An
7024 could be leaked for each block of executed module-level code if the
7025 interpreter slack mode is enabled This change deletes any implicitly
7027 object from the module-level code block. Lin Ming.
7029 Removed messages for successful predefined repair(s). The repair
7031 was considered too wordy. Now, messages are only unconditionally emitted
7033 the return object cannot be repaired. Existing messages for successful
7034 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
7037 Example Code and Data Size: These are the sizes for the OS-independent
7038 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7039 debug version of the code includes the debug output trace mechanism and
7041 much larger code and data size.
7044 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7045 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7047 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
7048 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
7050 2) iASL Compiler/Disassembler and Tools:
7052 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
7054 were no longer automatically removed at the termination of the compile.
7056 acpiexec: Implemented the -f option to specify default region fill value.
7057 This option specifies the value used to initialize buffers that simulate
7058 operation regions. Default value is zero. Useful for debugging problems
7060 depend on a specific initial value for a region or field.
7062 ----------------------------------------
7063 12 November 2009. Summary of changes for version 20091112:
7065 1) ACPI CA Core Subsystem:
7067 Implemented a post-order callback to AcpiWalkNamespace. The existing
7068 interface only has a pre-order callback. This change adds an additional
7069 parameter for a post-order callback which will be more useful for bus
7071 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
7073 Modified the behavior of the operation region memory mapping cache for
7074 SystemMemory. Ensure that the memory mappings created for operation
7076 do not cross 4K page boundaries. Crossing a page boundary while mapping
7077 regions can cause kernel warnings on some hosts if the pages have
7079 attributes. Such regions are probably BIOS bugs, and this is the
7081 Linux BZ 14445. Lin Ming.
7083 Implemented an automatic repair for predefined methods that must return
7084 sorted lists. This change will repair (by sorting) packages returned by
7086 _PSS, and _TSS. Drivers can now assume that the packages are correctly
7088 and do not contain NULL package elements. Adds one new file,
7089 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
7091 Fixed a possible fault during predefined name validation if a return
7093 object contains NULL elements. Also adds a warning if a NULL element is
7094 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
7096 include repair or removal of all such NULL elements where possible.
7098 Implemented additional module-level executable AML code support. This
7100 will execute module-level code that is not at the root of the namespace
7101 (under a Device object, etc.) at table load time. Module-level executable
7103 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
7105 Implemented a new internal function to create Integer objects. This
7107 simplifies miscellaneous object creation code. ACPICA BZ 823.
7109 Reduced the severity of predefined repair messages, Warning to Info.
7111 the object was successfully repaired, a warning is too severe. Reduced to
7113 info message for now. These messages may eventually be changed to debug-
7117 Example Code and Data Size: These are the sizes for the OS-independent
7118 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7119 debug version of the code includes the debug output trace mechanism and
7121 much larger code and data size.
7124 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7125 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7127 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
7128 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
7130 2) iASL Compiler/Disassembler and Tools:
7132 iASL: Implemented Switch() with While(1) so that Break works correctly.
7134 change correctly implements the Switch operator with a surrounding
7136 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
7138 iASL: Added a message if a package initializer list is shorter than
7140 length. Adds a new remark for a Package() declaration if an initializer
7142 exists, but is shorter than the declared length of the package. Although
7143 technically legal, this is probably a coding error and it is seen in the
7144 field. ACPICA BZ 815. Lin Ming, Bob Moore.
7146 iASL: Fixed a problem where the compiler could fault after the maximum
7148 of errors was reached (200).
7150 acpixtract: Fixed a possible warning for pointer cast if the compiler
7152 level set very high.
7154 ----------------------------------------
7155 13 October 2009. Summary of changes for version 20091013:
7157 1) ACPI CA Core Subsystem:
7159 Fixed a problem where an Operation Region _REG method could be executed
7161 than once. If a custom address space handler is installed by the host
7163 the "initialize operation regions" phase of the ACPICA initialization,
7165 _REG methods for that address space could be executed twice. This change
7166 fixes the problem. ACPICA BZ 427. Lin Ming.
7168 Fixed a possible memory leak for the Scope() ASL operator. When the exact
7169 invocation of "Scope(\)" is executed (change scope to root), one internal
7170 operand object was leaked. Lin Ming.
7172 Implemented a run-time repair for the _MAT predefined method. If the _MAT
7173 return value is defined as a Field object in the AML, and the field
7174 size is less than or equal to the default width of an integer (32 or
7176 can incorrectly return an Integer instead of a Buffer. ACPICA now
7177 automatically repairs this problem. ACPICA BZ 810.
7179 Implemented a run-time repair for the _BIF and _BIX predefined methods.
7181 "OEM Information" field is often incorrectly returned as an Integer with
7182 value zero if the field is not supported by the platform. This is due to
7184 ambiguity in the ACPI specification. The field should always be a string.
7185 ACPICA now automatically repairs this problem by returning a NULL string
7186 within the returned Package. ACPICA BZ 807.
7188 Example Code and Data Size: These are the sizes for the OS-independent
7189 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7190 debug version of the code includes the debug output trace mechanism and
7192 much larger code and data size.
7195 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7196 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7198 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
7199 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
7201 2) iASL Compiler/Disassembler and Tools:
7203 Disassembler: Fixed a problem where references to external symbols that
7204 contained one or more parent-prefixes (carats) were not handled
7206 possibly causing a fault. ACPICA BZ 806. Lin Ming.
7208 Disassembler: Restructured the code so that all functions that handle
7209 external symbols are in a single module. One new file is added,
7212 AML Debugger: Added a max count argument for the Batch command (which
7213 executes multiple predefined methods within the namespace.)
7215 iASL: Updated the compiler documentation (User Reference.) Available at
7216 http://www.acpica.org/documentation/. ACPICA BZ 750.
7218 AcpiXtract: Updated for Lint and other formatting changes. Close all open
7221 ----------------------------------------
7222 03 September 2009. Summary of changes for version 20090903:
7224 1) ACPI CA Core Subsystem:
7226 For Windows Vista compatibility, added the automatic execution of an _INI
7227 method located at the namespace root (\_INI). This method is executed at
7228 table load time. This support is in addition to the automatic execution
7230 \_SB._INI. Lin Ming.
7232 Fixed a possible memory leak in the interpreter for AML package objects
7234 the package initializer list is longer than the defined size of the
7236 This apparently can only happen if the BIOS changes the package size on
7238 fly (seen in a _PSS object), as ASL compilers do not allow this. The
7239 interpreter will truncate the package to the defined size (and issue an
7241 message), but previously could leave the extra objects undeleted if they
7243 pre-created during the argument processing (such is the case if the
7245 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
7247 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
7248 This has been reported in the field. Previously, ACPICA would zero out
7250 buffer/string. Now, the operation is treated as a noop. Provides Windows
7251 compatibility. ACPICA BZ 803. Lin Ming.
7253 Removed an extraneous error message for ASL constructs of the form
7254 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
7256 are seen in many BIOSs and are once again treated as NOOPs and no error
7258 emitted when they are encountered. ACPICA BZ 785.
7260 Fixed an extraneous warning message if a _DSM reserved method returns a
7261 Package object. _DSM can return any type of object, so validation on the
7262 return type cannot be performed. ACPICA BZ 802.
7264 Example Code and Data Size: These are the sizes for the OS-independent
7265 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7266 debug version of the code includes the debug output trace mechanism and
7268 much larger code and data size.
7271 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7272 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7274 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7275 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7277 2) iASL Compiler/Disassembler and Tools:
7279 iASL: Fixed a problem with the use of the Alias operator and Resource
7280 Templates. The correct alias is now constructed and no error is emitted.
7283 iASL: Implemented the -I option to specify additional search directories
7285 include files. Allows multiple additional search paths for include files.
7286 Directories are searched in the order specified on the command line
7288 the local directory is searched.) ACPICA BZ 800.
7290 iASL: Fixed a problem where the full pathname for include files was not
7291 emitted for warnings/errors. This caused the IDE support to not work
7292 properly. ACPICA BZ 765.
7294 iASL: Implemented the -@ option to specify a Windows-style response file
7295 containing additional command line options. ACPICA BZ 801.
7297 AcpiExec: Added support to load multiple AML files simultaneously (such
7300 DSDT and multiple SSDTs). Also added support for wildcards within the AML
7301 pathname. These features allow all machine tables to be easily loaded and
7302 debugged together. ACPICA BZ 804.
7304 Disassembler: Added missing support for disassembly of HEST table Error
7308 ----------------------------------------
7309 30 July 2009. Summary of changes for version 20090730:
7311 The ACPI 4.0 implementation for ACPICA is complete with this release.
7313 1) ACPI CA Core Subsystem:
7315 ACPI 4.0: Added header file support for all new and changed ACPI tables.
7316 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
7318 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
7320 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
7322 have been some ACPI 4.0 changes to other existing tables. Split the large
7323 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
7325 ACPI 4.0: Implemented predefined name validation for all new names. There
7327 31 new names in ACPI 4.0. The predefined validation module was split into
7329 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
7331 Implemented support for so-called "module-level executable code". This is
7332 executable AML code that exists outside of any control method and is
7334 to be executed at table load time. Although illegal since ACPI 2.0, this
7336 of code still exists and is apparently still being created. Blocks of
7338 code are now detected and executed as intended. Currently, the code
7340 must exist under either an If, Else, or While construct; these are the
7341 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
7343 Implemented an automatic dynamic repair for predefined names that return
7344 nested Package objects. This applies to predefined names that are defined
7346 return a variable-length Package of sub-packages. If the number of sub-
7347 packages is one, BIOS code is occasionally seen that creates a simple
7349 package with no sub-packages. This code attempts to fix the problem by
7350 wrapping a new package object around the existing package. These methods
7352 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
7356 Fixed a regression introduced in 20090625 for the AcpiGetDevices
7358 The _HID/_CID matching was broken and no longer matched IDs correctly.
7362 Fixed a problem with AcpiReset where the reset would silently fail if the
7363 register was one of the protected I/O ports. AcpiReset now bypasses the
7365 validation mechanism. This may eventually be driven into the
7369 Fixed a regression related to the recent update of the AcpiRead/Write
7370 interfaces. A sleep/suspend could fail if the optional PM2 Control
7372 does not exist during an attempt to write the Bus Master Arbitration bit.
7373 (However, some hosts already delete the code that writes this bit, and
7375 code may in fact be obsolete at this date.) ACPICA BZ 799.
7377 Fixed a problem where AcpiTerminate could fault if inadvertently called
7379 in succession. ACPICA BZ 795.
7381 Example Code and Data Size: These are the sizes for the OS-independent
7382 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7383 debug version of the code includes the debug output trace mechanism and
7385 much larger code and data size.
7388 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7389 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7391 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7392 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7394 2) iASL Compiler/Disassembler and Tools:
7396 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
7397 changes to existing tables. ACPICA BZ 775.
7399 ----------------------------------------
7400 25 June 2009. Summary of changes for version 20090625:
7402 The ACPI 4.0 Specification was released on June 16 and is available at
7403 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
7404 continue for the next few releases.
7406 1) ACPI CA Core Subsystem:
7408 ACPI 4.0: Implemented interpreter support for the IPMI operation region
7409 address space. Includes support for bi-directional data buffers and an
7411 address space handler (to be installed by an IPMI device driver.) ACPICA
7415 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
7417 support in both the header files and the disassembler.
7419 Completed a major update for the AcpiGetObjectInfo external interface.
7421 - Support for variable, unlimited length HID, UID, and CID strings.
7422 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
7424 - Call the _SxW power methods on behalf of a device object.
7425 - Determine if a device is a PCI root bridge.
7426 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
7427 These changes will require an update to all callers of this interface.
7429 the updated ACPICA Programmer Reference for details. One new source file
7431 been added - utilities/utids.c. ACPICA BZ 368, 780.
7433 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
7434 transfers. The Value parameter has been extended from 32 bits to 64 bits
7436 order to support new ACPI 4.0 tables. These changes will require an
7439 all callers of these interfaces. See the ACPICA Programmer Reference for
7440 details. ACPICA BZ 768.
7442 Fixed several problems with AcpiAttachData. The handler was not invoked
7444 the host node was deleted. The data sub-object was not automatically
7446 when the host node was deleted. The interface to the handler had an
7448 parameter, this was removed. ACPICA BZ 778.
7450 Enhanced the function that dumps ACPI table headers. All non-printable
7451 characters in the string fields are now replaced with '?' (Signature,
7453 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7454 these fields are occasionally seen in the field. ACPICA BZ 788.
7456 Fixed a problem with predefined method repair code where the code that
7457 attempts to repair/convert an object of incorrect type is only executed
7459 the first time the predefined method is called. The mechanism that
7461 warnings on subsequent calls was interfering with the repair mechanism.
7464 Fixed a possible memory leak in the predefined validation/repair code
7467 buffer is automatically converted to an expected string object.
7469 Removed obsolete 16-bit files from the distribution and from the current
7471 tree head. ACPICA BZ 776.
7473 Example Code and Data Size: These are the sizes for the OS-independent
7474 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7475 debug version of the code includes the debug output trace mechanism and
7477 much larger code and data size.
7480 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7481 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7483 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7484 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7486 2) iASL Compiler/Disassembler and Tools:
7488 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7489 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7491 ACPI 4.0: iASL - implemented compile-time validation support for all new
7492 predefined names and control methods (31 total). ACPICA BZ 769.
7494 ----------------------------------------
7495 21 May 2009. Summary of changes for version 20090521:
7497 1) ACPI CA Core Subsystem:
7499 Disabled the preservation of the SCI enable bit in the PM1 control
7501 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7504 a "preserved" bit - "OSPM always preserves this bit position", section
7505 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7506 because the bit needs to be explicitly set by the OS as a workaround. No
7507 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7508 attempts to preserve this bit.
7510 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7511 incorrectly formed _PRT package could cause a fault. Added validation to
7512 ensure that each package element is actually a sub-package.
7514 Implemented a new interface to install or override a single control
7516 AcpiInstallMethod. This interface is useful when debugging in order to
7518 an existing method or to install a missing method without having to
7520 the entire ACPI table. See the ACPICA Programmer Reference for use and
7521 examples. Lin Ming, Bob Moore.
7523 Fixed several reference count issues with the DdbHandle object that is
7524 created from a Load or LoadTable operator. Prevent premature deletion of
7526 object. Also, mark the object as invalid once the table has been
7528 This is needed because the handle itself may not be deleted after the
7530 unload, depending on whether it has been stored in a named object by the
7533 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7534 mutexes of the same sync level are acquired but then not released in
7536 opposite order, the internally maintained Current Sync Level becomes
7538 and can cause subsequent execution errors. ACPICA BZ 471.
7540 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7541 specification has been changed to make the SyncLevel for mutex objects
7543 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7545 same as the current sync level. This makes more sense than the previous
7547 (SyncLevel less than or equal). This change updates the code to match the
7550 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7552 (local) cache must be locked during all cache object deletions. Andrew
7555 Updated the Load operator to use operation region interfaces. This
7557 direct memory mapping with region access calls. Now, all region accesses
7559 through the installed region handler as they should.
7561 Simplified and optimized the NsGetNextNode function. Reduced parameter
7563 and reduced code for this frequently used function.
7565 Example Code and Data Size: These are the sizes for the OS-independent
7566 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7567 debug version of the code includes the debug output trace mechanism and
7569 much larger code and data size.
7572 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7573 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7575 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7576 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7578 2) iASL Compiler/Disassembler and Tools:
7580 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7582 with sub-table disassembly and handling invalid sub-tables. Attempt
7584 after an invalid sub-table ID.
7586 ----------------------------------------
7587 22 April 2009. Summary of changes for version 20090422:
7589 1) ACPI CA Core Subsystem:
7591 Fixed a compatibility issue with the recently released I/O port
7593 mechanism. For windows compatibility, 1) On a port protection violation,
7594 simply ignore the request and do not return an exception (allow the
7596 method to continue execution.) 2) If only part of the request overlaps a
7597 protected port, read/write the individual ports that are not protected.
7601 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7603 breaks into the AML debugger if the debugger is present. This matches the
7604 ACPI-defined behavior.
7606 Fixed several possible warnings related to the use of the configurable
7607 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7608 pointer with no warnings. Also fixes several warnings in printf-like
7609 statements for the 64-bit build when the type is configured as a pointer.
7612 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7614 warning options.) Examples include printf formats, aliasing, unused
7616 missing prototypes, missing switch default statements, use of non-ANSI
7617 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7619 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7621 Example Code and Data Size: These are the sizes for the OS-independent
7622 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7623 debug version of the code includes the debug output trace mechanism and
7625 much larger code and data size.
7628 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7629 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7631 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7632 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7634 2) iASL Compiler/Disassembler and Tools:
7636 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7641 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7643 correctly digest Windows/DOS formatted files (with CR/LF).
7645 iASL: Added a new option for "quiet mode" (-va) that produces only the
7646 compilation summary, not individual errors and warnings. Useful for large
7649 AcpiExec: Implemented a new option (-z) to enable a forced
7651 timeout that can be used to detect hang conditions during execution of
7653 code (includes both internal semaphores and AML-defined mutexes and
7656 Added new makefiles for the generation of acpica in a generic unix-like
7657 environment. These makefiles are intended to generate the acpica tools
7659 utilities from the original acpica git source tree structure.
7661 Test Suites: Updated and cleaned up the documentation files. Updated the
7662 copyrights to 2009, affecting all source files. Use the new version of
7664 with quiet mode. Increased the number of available semaphores in the
7666 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7668 an alternate implementation of the semaphore timeout to allow aslts to
7669 execute fully on Cygwin.
7671 ----------------------------------------
7672 20 March 2009. Summary of changes for version 20090320:
7674 1) ACPI CA Core Subsystem:
7676 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7678 unloads. Added a reader/writer locking mechanism to allow multiple
7680 namespace walks (readers), but block a dynamic table unload until it can
7682 exclusive write access to the namespace. This fixes a problem where a
7684 unload could (possibly catastrophically) delete the portion of the
7686 that is currently being examined by a walk. Adds a new file, utlock.c,
7688 implements the reader/writer lock mechanism. ACPICA BZ 749.
7690 Fixed a regression introduced in version 20090220 where a change to the
7692 handling could cause the ACPICA subsystem to access non-existent I/O
7695 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7697 FADT can contain both 32-bit and 64-bit versions of these addresses.
7698 Previously, the 64-bit versions were favored, meaning that if both 32 and
7700 versions were valid, but not equal, the 64-bit version was used. This was
7701 found to cause some machines to fail. Now, in this case, the 32-bit
7703 is used instead. This now matches the Windows behavior.
7705 Implemented a new mechanism to protect certain I/O ports. Provides
7707 compatibility and protects the standard PC I/O ports from access via AML
7708 code. Adds a new file, hwvalid.c
7710 Fixed a possible extraneous warning message from the FADT support. The
7711 message warns of a 32/64 length mismatch between the legacy and GAS
7712 definitions for a register.
7714 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7716 made obsolete by the port protection mechanism above. It was previously
7718 to validate the entire address range of an operation region, which could
7720 incorrect if the range included illegal ports, but fields within the
7721 operation region did not actually access those ports. Validation is now
7722 performed on a per-field basis instead of the entire region.
7724 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7725 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7727 means a read/modify/write when writing to the register. However, for
7729 registers, writing a one means clear the event. Writing a zero means
7731 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7733 and the ACPICA code now simply always writes a zero to the ignored bit.
7735 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7737 per the ACPI specification, for the control registers, preserve
7738 (read/modify/write) all bits that are defined as either reserved or
7741 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7742 When reading the register, zero the write-only bits as per the ACPI spec.
7743 ACPICA BZ 443. Lin Ming.
7745 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7746 wants to reply true to this request. The Windows strings are the only
7748 through the AML that are tested and known to work properly.
7751 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7752 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7754 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7755 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7757 2) iASL Compiler/Disassembler and Tools:
7759 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7763 ----------------------------------------
7764 20 February 2009. Summary of changes for version 20090220:
7766 1) ACPI CA Core Subsystem:
7768 Optimized the ACPI register locking. Removed locking for reads from the
7770 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7772 not required when reading the single-bit registers. The
7773 AcpiGetRegisterUnlocked function is no longer needed and has been
7775 This will improve performance for reads on these registers. ACPICA BZ
7778 Fixed the parameter validation for AcpiRead/Write. Now return
7779 AE_BAD_PARAMETER if the input register pointer is null, and
7782 the register has an address of zero. Previously, these cases simply
7784 AE_OK. For optional registers such as PM1B status/enable/control, the
7786 should check for a valid register address before calling. ACPICA BZ 748.
7788 Renamed the external ACPI bit register access functions. Renamed
7789 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7790 functions. The new names are AcpiReadBitRegister and
7791 AcpiWriteBitRegister.
7792 Also, restructured the code for these functions by simplifying the code
7794 and condensing duplicate code to reduce code size.
7796 Added new functions to transparently handle the possibly split PM1 A/B
7797 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7799 now handle the split registers for PM1 Status, Enable, and Control.
7804 Added a function to handle the PM1 control registers,
7805 AcpiHwWritePm1Control.
7806 This function writes both of the PM1 control registers (A/B). These
7808 are different than the PM1 A/B status and enable registers in that
7810 values can be written to the A/B registers. Most notably, the SLP_TYP
7812 can be different, as per the values returned from the _Sx predefined
7815 Removed an extra register write within AcpiHwClearAcpiStatus. This
7817 was writing an optional PM1B status register twice. The existing call to
7819 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7821 register. ACPICA BZ 751.
7823 Split out the PM1 Status registers from the FADT. Added new globals for
7825 registers (A/B), similar to the way the PM1 Enable registers are handled.
7826 Instead of overloading the FADT Event Register blocks. This makes the
7828 clearer and less prone to error.
7830 Fixed the warning message for when the platform contains too many ACPI
7832 for the default size of the global root table data structure. The
7834 for the truncation value was incorrect.
7836 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7837 obsolete macro, since it is now a simple reference to ->common.type.
7839 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7841 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7842 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7843 simply SLEEP_TYPE. ACPICA BZ 754.
7845 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7846 function is only needed on 64-bit host operating systems and is thus not
7847 included for 32-bit hosts.
7849 Debug output: print the input and result for invocations of the _OSI
7851 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7853 verbosity of this debug level. Len Brown.
7855 Example Code and Data Size: These are the sizes for the OS-independent
7856 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7857 debug version of the code includes the debug output trace mechanism and
7859 much larger code and data size.
7862 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7863 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7865 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7866 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7868 2) iASL Compiler/Disassembler and Tools:
7870 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7871 various legal performance profiles.
7873 ----------------------------------------
7874 23 January 2009. Summary of changes for version 20090123:
7876 1) ACPI CA Core Subsystem:
7878 Added the 2009 copyright to all module headers and signons. This affects
7879 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7880 the tools/utilities.
7882 Implemented a change to allow the host to override any ACPI table,
7884 dynamically loaded tables. Previously, only the DSDT could be replaced by
7886 host. With this change, the AcpiOsTableOverride interface is called for
7888 table found in the RSDT/XSDT during ACPICA initialization, and also
7890 a table is dynamically loaded via the AML Load operator.
7892 Updated FADT flag definitions, especially the Boot Architecture flags.
7894 Debugger: For the Find command, automatically pad the input ACPI name
7896 underscores if the name is shorter than 4 characters. This enables a
7898 with the actual namespace entry which is itself padded with underscores.
7900 Example Code and Data Size: These are the sizes for the OS-independent
7901 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7902 debug version of the code includes the debug output trace mechanism and
7904 much larger code and data size.
7907 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7908 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7910 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7911 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7913 2) iASL Compiler/Disassembler and Tools:
7915 Fix build error under Bison-2.4.
7917 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7919 flags. Now decode all flags, regardless of the FADT version. Flag output
7920 includes the FADT version which first defined each flag.
7922 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7924 DSDT). Windows only.
7926 ----------------------------------------
7927 04 December 2008. Summary of changes for version 20081204:
7929 1) ACPI CA Core Subsystem:
7931 The ACPICA Programmer Reference has been completely updated and revamped
7933 this release. This includes updates to the external interfaces, OSL
7934 interfaces, the overview sections, and the debugger reference.
7936 Several new ACPICA interfaces have been implemented and documented in the
7937 programmer reference:
7938 AcpiReset - Writes the reset value to the FADT-defined reset register.
7939 AcpiDisableAllGpes - Disable all available GPEs.
7940 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7941 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7942 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7943 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7944 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7946 Most of the public ACPI hardware-related interfaces have been moved to a
7948 file, components/hardware/hwxface.c
7950 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7951 register lengths within the FADT are now used, and the low level ACPI
7952 register access no longer hardcodes the ACPI register lengths. Given that
7953 there may be some risk in actually trusting the FADT register lengths, a
7955 time option was added to fall back to the default hardcoded lengths if
7957 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7958 option is set to true for now, and a warning is issued if a suspicious
7960 register length is overridden with the default value.
7962 Fixed a reference count issue in NsRepairObject. This problem was
7964 in version 20081031 as part of a fix to repair Buffer objects within
7967 Added semaphore support to the Linux/Unix application OS-services layer
7968 (OSL). ACPICA BZ 448. Lin Ming.
7970 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7972 be implemented in the OSL, or will binary semaphores be used instead.
7974 Example Code and Data Size: These are the sizes for the OS-independent
7975 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7976 debug version of the code includes the debug output trace mechanism and
7978 much larger code and data size.
7981 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7982 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7984 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7985 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7987 2) iASL Compiler/Disassembler and Tools:
7989 iASL: Completed the '-e' option to include additional ACPI tables in
7992 aid with disassembly and External statement generation. ACPICA BZ 742.
7996 iASL: Removed the "named object in while loop" error. The compiler cannot
7997 determine how many times a loop will execute. ACPICA BZ 730.
7999 Disassembler: Implemented support for FADT revision 2 (MS extension).
8003 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
8006 ----------------------------------------
8007 31 October 2008. Summary of changes for version 20081031:
8009 1) ACPI CA Core Subsystem:
8011 Restructured the ACPICA header files into public/private. acpi.h now
8013 only the "public" acpica headers. All other acpica headers are "private"
8015 should not be included by acpica users. One new file, accommon.h is used
8017 include the commonly used private headers for acpica code generation.
8019 plans include moving all private headers to a new subdirectory.
8021 Implemented an automatic Buffer->String return value conversion for
8022 predefined ACPI methods. For these methods (such as _BIF), added
8024 conversion for return objects that are required to be a String, but a
8026 was found instead. This can happen when reading string battery data from
8028 operation region, because it used to be difficult to convert the data
8030 buffer to string from within the ASL. Ensures that the host OS is
8032 with a valid null-terminated string. Linux BZ 11822.
8034 Updated the FACS waking vector interfaces. Split
8035 AcpiSetFirmwareWakingVector
8036 into two: one for the 32-bit vector, another for the 64-bit vector. This
8038 required because the host OS must setup the wake much differently for
8040 vector (real vs. protected mode, etc.) and the interface itself should
8043 deciding which vector to use. Also, eliminated the
8044 GetFirmwareWakingVector
8045 interface, as it served no purpose (only the firmware reads the vector,
8047 only writes the vector.) ACPICA BZ 731.
8049 Implemented a mechanism to escape infinite AML While() loops. Added a
8051 counter to force exit from AML While loops if the count becomes too
8053 This can occur in poorly written AML when the hardware does not respond
8054 within a while loop and the loop does not implement a timeout. The
8056 loop count is configurable. A new exception code is returned when a loop
8058 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
8060 Optimized the execution of AML While loops. Previously, a control state
8061 object was allocated and freed for each execution of the loop. The
8062 optimization is to simply reuse the control state for each iteration.
8064 speeds up the raw loop execution time by about 5%.
8066 Enhanced the implicit return mechanism. For Windows compatibility, return
8068 implicit integer of value zero for methods that contain no executable
8070 Such methods are seen in the field as stubs (presumably), and can cause
8071 drivers to fail if they expect a return value. Lin Ming.
8073 Allow multiple backslashes as root prefixes in namepaths. In a fully
8074 qualified namepath, allow multiple backslash prefixes. This can happen
8076 is seen in the field) because of the use of a double-backslash in strings
8077 (since backslash is the escape character) causing confusion. ACPICA BZ
8081 Emit a warning if two different FACS or DSDT tables are discovered in the
8082 FADT. Checks if there are two valid but different addresses for the FACS
8084 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
8086 Consolidated the method argument count validation code. Merged the code
8088 validates control method argument counts into the predefined validation
8089 module. Eliminates possible multiple warnings for incorrect argument
8092 Implemented ACPICA example code. Includes code for ACPICA initialization,
8093 handler installation, and calling a control method. Available at
8094 source/tools/examples.
8096 Added a global pointer for FACS table to simplify internal FACS access.
8098 the global pointer instead of using AcpiGetTableByIndex for each FACS
8100 This simplifies the code for the Global Lock and the Firmware Waking
8103 Example Code and Data Size: These are the sizes for the OS-independent
8104 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8105 debug version of the code includes the debug output trace mechanism and
8107 much larger code and data size.
8110 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8111 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8113 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
8114 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
8116 2) iASL Compiler/Disassembler and Tools:
8118 iASL: Improved disassembly of external method calls. Added the -e option
8120 allow the inclusion of additional ACPI tables to help with the
8123 method invocations and the generation of external declarations during the
8124 disassembly. Certain external method invocations cannot be disassembled
8125 properly without the actual declaration of the method. Use the -e option
8127 include the table where the external method(s) are actually declared.
8129 useful for disassembling SSDTs that make method calls back to the master
8130 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
8132 -e dsdt.aml ssdt1.aml
8134 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
8135 problem where the use of an alias within a namepath would result in a not
8136 found error or cause the compiler to fault. Also now allows forward
8137 references from the Alias operator itself. ACPICA BZ 738.
8139 ----------------------------------------
8140 26 September 2008. Summary of changes for version 20080926:
8142 1) ACPI CA Core Subsystem:
8144 Designed and implemented a mechanism to validate predefined ACPI methods
8146 objects. This code validates the predefined ACPI objects (objects whose
8148 start with underscore) that appear in the namespace, at the time they are
8149 evaluated. The argument count and the type of the returned object are
8150 validated against the ACPI specification. The purpose of this validation
8152 to detect problems with the BIOS-implemented predefined ACPI objects
8154 the results are returned to the ACPI-related drivers. Future enhancements
8156 include actual repair of incorrect return objects where possible. Two new
8157 files are nspredef.c and acpredef.h.
8159 Fixed a fault in the AML parser if a memory allocation fails during the
8161 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
8163 Fixed an issue with implicit return compatibility. This change improves
8165 implicit return mechanism to be more compatible with the MS interpreter.
8167 Ming, ACPICA BZ 349.
8169 Implemented support for zero-length buffer-to-string conversions. Allow
8171 length strings during interpreter buffer-to-string conversions. For
8173 during the ToDecimalString and ToHexString operators, as well as implicit
8174 conversions. Fiodor Suietov, ACPICA BZ 585.
8176 Fixed two possible memory leaks in the error exit paths of
8177 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
8179 similar in that they use a stack of state objects in order to eliminate
8180 recursion. The stack must be fully unwound and deallocated if an error
8181 occurs. Lin Ming. ACPICA BZ 383.
8183 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
8185 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
8186 Moore ACPICA BZ 442.
8188 Removed the obsolete version number in module headers. Removed the
8189 "$Revision" number that appeared in each module header. This version
8191 was useful under SourceSafe and CVS, but has no meaning under git. It is
8193 only incorrect, it could also be misleading.
8195 Example Code and Data Size: These are the sizes for the OS-independent
8196 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8197 debug version of the code includes the debug output trace mechanism and
8199 much larger code and data size.
8202 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8203 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8205 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
8206 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
8208 ----------------------------------------
8209 29 August 2008. Summary of changes for version 20080829:
8211 1) ACPI CA Core Subsystem:
8213 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
8214 Reference. Changes include the elimination of cheating on the Object
8216 for the DdbHandle subtype, addition of a reference class field to
8217 differentiate the various reference types (instead of an AML opcode), and
8219 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
8221 Reduce an error to a warning for an incorrect method argument count.
8222 Previously aborted with an error if too few arguments were passed to a
8223 control method via the external ACPICA interface. Now issue a warning
8225 and continue. Handles the case where the method inadvertently declares
8227 many arguments, but does not actually use the extra ones. Applies mainly
8229 the predefined methods. Lin Ming. Linux BZ 11032.
8231 Disallow the evaluation of named object types with no intrinsic value.
8233 AE_TYPE for objects that have no value and therefore evaluation is
8235 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
8237 these types were allowed, but an exception would be generated at some
8239 during the evaluation. Now, the error is generated up front.
8241 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
8242 (nsnames.c). Fixes a leak in the error exit path.
8244 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
8246 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
8248 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
8251 Removed obsolete and/or unused exception codes from the acexcep.h header.
8252 There is the possibility that certain device drivers may be affected if
8254 use any of these exceptions.
8256 The ACPICA documentation has been added to the public git source tree,
8258 acpica/documents. Included are the ACPICA programmer reference, the iASL
8259 compiler reference, and the changes.txt release logfile.
8261 Example Code and Data Size: These are the sizes for the OS-independent
8262 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8263 debug version of the code includes the debug output trace mechanism and
8265 much larger code and data size.
8268 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8269 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8271 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8272 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8274 2) iASL Compiler/Disassembler and Tools:
8276 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
8277 defines _SCP with 3 arguments. Previous versions defined it with only 1
8278 argument. iASL now allows both definitions.
8280 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
8282 length subtables when disassembling ACPI tables. Also fixed a couple of
8283 errors where a full 16-bit table type field was not extracted from the
8287 acpisrc: Improve comment counting mechanism for generating source code
8288 statistics. Count first and last lines of multi-line comments as
8290 not comment lines. Handle Linux legal header in addition to standard
8294 ----------------------------------------
8296 29 July 2008. Summary of changes for version 20080729:
8298 1) ACPI CA Core Subsystem:
8300 Fix a possible deadlock in the GPE dispatch. Remove call to
8301 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
8303 to acquire the GPE lock but can deadlock since the GPE lock is already
8305 at dispatch time. This code was introduced in version 20060831 as a
8307 to Linux BZ 6881 and has since been removed from Linux.
8309 Add a function to dereference returned reference objects. Examines the
8311 object from a call to AcpiEvaluateObject. Any Index or RefOf references
8313 automatically dereferenced in an attempt to return something useful
8315 reference types cannot be converted into an external ACPI_OBJECT.)
8317 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
8319 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
8320 subtables for the MADT and one new subtable for the SRAT. Includes
8321 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
8323 Specification, June 2008.
8325 Additional error checking for pathname utilities. Add error check after
8327 calls to AcpiNsGetPathnameLength. Add status return from
8328 AcpiNsBuildExternalPath and check after all calls. Add parameter
8330 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
8332 Return status from the global init function AcpiUtGlobalInitialize. This
8334 used by both the kernel subsystem and the utilities such as iASL
8336 The function could possibly fail when the caches are initialized. Yang
8339 Add a function to decode reference object types to strings. Created for
8340 improved error messages.
8342 Improve object conversion error messages. Better error messages during
8344 conversion from internal to the external ACPI_OBJECT. Used for external
8346 to AcpiEvaluateObject.
8348 Example Code and Data Size: These are the sizes for the OS-independent
8349 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8350 debug version of the code includes the debug output trace mechanism and
8352 much larger code and data size.
8355 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8356 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8358 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8359 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8361 2) iASL Compiler/Disassembler and Tools:
8363 Debugger: fix a possible hang when evaluating non-methods. Fixes a
8365 introduced in version 20080701. If the object being evaluated (via
8367 command) is not a method, the debugger can hang while trying to obtain
8369 existent parameters.
8371 iASL: relax error for using reserved "_T_x" identifiers. These names can
8372 appear in a disassembled ASL file if they were emitted by the original
8373 compiler. Instead of issuing an error or warning and forcing the user to
8374 manually change these names, issue a remark instead.
8376 iASL: error if named object created in while loop. Emit an error if any
8378 object is created within a While loop. If allowed, this code will
8381 run-time error on the second iteration of the loop when an attempt is
8384 create the same named object twice. ACPICA bugzilla 730.
8386 iASL: Support absolute pathnames for include files. Add support for
8388 pathnames within the Include operator. previously, only relative
8392 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
8394 The ACPI spec requires one interrupt minimum. BZ 423
8396 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
8397 Handles the case for the Interrupt Resource Descriptor where
8398 the ResourceSource argument is omitted but ResourceSourceIndex
8399 is present. Now leave room for the Index. BZ 426
8401 iASL: Prevent error message if CondRefOf target does not exist. Fixes
8403 where an error message is emitted if the target does not exist. BZ 516
8405 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
8406 (get ACPI tables on Windows). This was apparently broken in version
8409 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
8411 the EOF happens immediately after the last table in the input file. Print
8412 completion message. Previously, no message was displayed in this case.
8414 ----------------------------------------
8415 01 July 2008. Summary of changes for version 20080701:
8417 0) Git source tree / acpica.org
8419 Fixed a problem where a git-clone from http would not transfer the entire
8422 1) ACPI CA Core Subsystem:
8424 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
8425 enable bit. Now performs a read-change-write of the enable register
8427 of simply writing out the cached enable mask. This will prevent
8429 enabling of GPEs if a rogue GPE is received during initialization (before
8431 handlers are installed.)
8433 Implemented a copy for dynamically loaded tables. Previously, dynamically
8434 loaded tables were simply mapped - but on some machines this memory is
8435 corrupted after suspend. Now copy the table to a local buffer. For the
8436 OpRegion case, added checksum verify. Use the table length from the table
8437 header, not the region length. For the Buffer case, use the table length
8438 also. Dennis Noordsij, Bob Moore. BZ 10734
8440 Fixed a problem where the same ACPI table could not be dynamically loaded
8442 unloaded more than once. Without this change, a table cannot be loaded
8444 once it has been loaded/unloaded one time. The current mechanism does not
8445 unregister a table upon an unload. During a load, if the same table is
8447 this no longer returns an exception. BZ 722
8449 Fixed a problem where the wrong descriptor length was calculated for the
8450 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
8452 are calculated as 12 bytes long, but the actual length in the internal
8453 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8455 by Linn Crosetto. BZ 728
8457 Fixed a possible memory leak in the Unload operator. The DdbHandle
8459 by Load() did not have its reference count decremented during unload,
8461 to a memory leak. Lin Ming. BZ 727
8463 Fixed a possible memory leak when deleting thermal/processor objects. Any
8464 associated notify handlers (and objects) were not being deleted. Fiodor
8467 Fixed the ordering of the ASCII names in the global mutex table to match
8469 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8471 Vegard Nossum. BZ 726
8473 Enhanced the AcpiGetObjectInfo interface to return the number of required
8474 arguments if the object is a control method. Added this call to the
8476 so the proper number of default arguments are passed to a method. This
8477 prevents a warning when executing methods from AcpiExec.
8479 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8480 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8482 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8484 Example Code and Data Size: These are the sizes for the OS-independent
8485 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8486 debug version of the code includes the debug output trace mechanism and
8488 much larger code and data size.
8491 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8492 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8494 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8495 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8497 2) iASL Compiler/Disassembler and Tools:
8499 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8500 resource descriptor names.
8502 iASL: Detect invalid ASCII characters in input (windows version). Removed
8504 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8505 characters in the input. BZ 441
8507 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8509 "result of operation not used" warning when the DDB handle returned from
8510 LoadTable is not used. The warning is not needed. BZ 590
8512 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8515 pass address of table to the AML. Added option to disable OpRegion
8517 to allow creation of an OpRegion with a real address that was passed to
8519 All of this allows testing of the Load and Unload operators from
8522 Debugger: update tables command for unloaded tables. Handle unloaded
8524 and use the standard table header output routine.
8526 ----------------------------------------
8527 09 June 2008. Summary of changes for version 20080609:
8529 1) ACPI CA Core Subsystem:
8531 Implemented a workaround for reversed _PRT entries. A significant number
8533 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8534 change dynamically detects and repairs this problem. Provides
8536 with MS ACPI. BZ 6859
8538 Simplified the internal ACPI hardware interfaces to eliminate the locking
8539 flag parameter from Register Read/Write. Added a new external interface,
8540 AcpiGetRegisterUnlocked.
8542 Fixed a problem where the invocation of a GPE control method could hang.
8544 was a regression introduced in 20080514. The new method argument count
8545 validation mechanism can enter an infinite loop when a GPE method is
8546 dispatched. Problem fixed by removing the obsolete code that passed GPE
8548 information to the notify handler via the control method parameter
8551 Fixed a problem where the _SST execution status was incorrectly returned
8553 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8555 20080514. _SST is optional and a NOT_FOUND exception should never be
8558 Fixed a problem where a deleted object could be accessed from within the
8560 parser. This was a regression introduced in version 20080123 as a fix for
8562 Unload operator. Lin Ming. BZ 10669
8564 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8566 and eliminated the use of a negative index in a loop. Operands are now
8567 displayed in the correct order, not backwards. This also fixes a
8569 introduced in 20080514 on 64-bit systems where the elimination of
8570 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8573 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8575 path did not delete a locally allocated structure.
8577 Updated definitions for the DMAR and SRAT tables to synchronize with the
8578 current specifications. Includes disassembler support.
8580 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8581 loop termination value was used. Loop terminated on iteration early,
8583 one mutex. Linn Crosetto
8585 Example Code and Data Size: These are the sizes for the OS-independent
8586 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8587 debug version of the code includes the debug output trace mechanism and
8589 much larger code and data size.
8592 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8593 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8595 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8596 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8598 2) iASL Compiler/Disassembler and Tools:
8600 Disassembler: Implemented support for EisaId() within _CID objects. Now
8601 disassemble integer _CID objects back to EisaId invocations, including
8602 multiple integers within _CID packages. Includes single-step support for
8605 Disassembler: Added support for DMAR and SRAT table definition changes.
8607 ----------------------------------------
8608 14 May 2008. Summary of changes for version 20080514:
8610 1) ACPI CA Core Subsystem:
8612 Fixed a problem where GPEs were enabled too early during the ACPICA
8613 initialization. This could lead to "handler not installed" errors on some
8614 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8616 ensures that all operation regions and devices throughout the namespace
8618 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8620 Implemented a change to the enter sleep code. Moved execution of the _GTS
8621 method to just before setting sleep enable bit. The execution was moved
8623 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8624 immediately before the SLP_EN bit is set, as per the ACPI specification.
8627 Implemented a fix to disable unknown GPEs (2nd version). Now always
8629 the GPE, even if ACPICA thinks that that it is already disabled. It is
8630 possible that the AML or some other code has enabled the GPE unbeknownst
8634 Fixed a problem with the Field operator where zero-length fields would
8636 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8638 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8640 Implemented a fix for the Load operator, now load the table at the
8642 root. This reverts a change introduced in version 20071019. The table is
8644 loaded at the namespace root even though this goes against the ACPI
8645 specification. This provides compatibility with other ACPI
8647 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8650 Fixed a problem where ACPICA would not Load() tables with unusual
8652 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8653 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8654 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8656 signatures, ACPICA must be compatible. BZ 10454.
8658 Fixed a possible negative array index in AcpiUtValidateException. Added
8660 fields to the exception string arrays to eliminate a -1 subtraction on
8664 Updated the debug tracking macros to reduce overall code and data size.
8665 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8666 instead of pointers to static strings. Jan Beulich and Bob Moore.
8668 Implemented argument count checking in control method invocation via
8669 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8671 many. This applies only to extern programmatic control method execution,
8673 method-to-method calls within the AML. Lin Ming.
8675 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8677 longer needed, especially with the removal of 16-bit support. It was
8679 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8682 32/64-bit platforms is required.
8684 Added the C const qualifier for appropriate string constants -- mostly
8685 MODULE_NAME and printf format strings. Jan Beulich.
8687 Example Code and Data Size: These are the sizes for the OS-independent
8688 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8689 debug version of the code includes the debug output trace mechanism and
8691 much larger code and data size.
8694 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8695 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8697 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8698 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8700 2) iASL Compiler/Disassembler and Tools:
8702 Implemented ACPI table revision ID validation in the disassembler. Zero
8704 always invalid. For DSDTs, the ID controls the interpreter integer width.
8706 means 32-bit and this is unusual. 2 or greater is 64-bit.
8708 ----------------------------------------
8709 21 March 2008. Summary of changes for version 20080321:
8711 1) ACPI CA Core Subsystem:
8713 Implemented an additional change to the GPE support in order to suppress
8714 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8716 disable incoming GPEs that are neither enabled nor disabled -- meaning
8718 the GPE is unknown to the system. This should prevent future interrupt
8720 from that GPE. BZ 6217 (Zhang Rui)
8722 Fixed a problem where NULL package elements were not returned to the
8723 AcpiEvaluateObject interface correctly. The element was simply ignored
8724 instead of returning a NULL ACPI_OBJECT package element, potentially
8726 a buffer overflow and/or confusing the caller who expected a fixed number
8728 elements. BZ 10132 (Lin Ming, Bob Moore)
8730 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8732 Qword), Field, BankField, and IndexField operators when invoked from
8734 an executing control method. In this case, these operators created
8736 nodes that were incorrectly left marked as permanent nodes instead of
8737 temporary nodes. This could cause a problem if there is race condition
8738 between an exiting control method and a running namespace walk. (Reported
8742 Fixed a problem where the CreateField and CreateXXXField operators would
8743 incorrectly allow duplicate names (the name of the field) with no
8747 Implemented several changes for Notify handling. Added support for new
8749 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8750 PowerResource objects is no longer allowed, as per the ACPI
8752 (Bob Moore, Zhang Rui)
8754 All Reference Objects returned via the AcpiEvaluateObject interface are
8756 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8758 NULL objects - either NULL package elements or unresolved named
8761 Fixed a problem where an extraneous debug message was produced for
8763 objects (when debugging enabled). The message "Package List length larger
8764 than NumElements count" is now produced in the correct case, and is now
8766 error message rather than a debug message. Added a debug message for the
8767 opposite case, where NumElements is larger than the Package List (the
8769 will be padded out with NULL elements as per the ACPI spec.)
8771 Implemented several improvements for the output of the ASL "Debug" object
8773 clarify and keep all data for a given object on one output line.
8775 Fixed two size calculation issues with the variable-length Start
8777 resource descriptor.
8779 Example Code and Data Size: These are the sizes for the OS-independent
8780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8781 debug version of the code includes the debug output trace mechanism and
8783 a much larger code and data size.
8786 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8787 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8789 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8790 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8792 2) iASL Compiler/Disassembler and Tools:
8794 Fixed a problem with the use of the Switch operator where execution of
8796 containing method by multiple concurrent threads could cause an
8797 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8798 actual Switch opcode, it must be simulated with local named temporary
8799 variables and if/else pairs. The solution chosen was to mark any method
8801 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8804 ----------------------------------------
8805 13 February 2008. Summary of changes for version 20080213:
8807 1) ACPI CA Core Subsystem:
8809 Implemented another MS compatibility design change for GPE/Notify
8811 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8813 complete first. It is expected that the OSL will queue the enable request
8814 behind all pending notify requests (may require changes to the local host
8816 in AcpiOsExecute). Alexey Starikovskiy.
8818 Fixed a problem where buffer and package objects passed as arguments to a
8819 control method via the external AcpiEvaluateObject interface could cause
8821 AE_AML_INTERNAL exception depending on the order and type of operators
8822 executed by the target control method.
8824 Fixed a problem where resource descriptor size optimization could cause a
8825 problem when a _CRS resource template is passed to a _SRS method. The
8827 resource template must use the same descriptors (with the same size) as
8828 returned from _CRS. This change affects the following resource
8830 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8833 Fixed a problem where a CopyObject to RegionField, BankField, and
8835 objects did not perform an implicit conversion as it should. These types
8837 retain their initial type permanently as per the ACPI specification.
8839 a CopyObject to all other object types should not perform an implicit
8840 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8842 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8843 match device CIDs did not examine the entire list of available CIDs, but
8844 instead aborted on the first non-matching CID. Andrew Patterson.
8846 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8848 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8849 truncating the upper dword of a 64-bit value. This macro is only used to
8850 display debug output, so no incorrect calculations were made. Also,
8851 reimplemented the macro so that a 64-bit shift is not performed by
8852 inefficient compilers.
8854 Added missing va_end statements that should correspond with each va_start
8857 Example Code and Data Size: These are the sizes for the OS-independent
8858 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8859 debug version of the code includes the debug output trace mechanism and
8861 a much larger code and data size.
8864 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8865 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8867 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8868 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8870 2) iASL Compiler/Disassembler and Tools:
8872 Implemented full disassembler support for the following new ACPI tables:
8873 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8874 complicated HEST table. These tables support the Windows Hardware Error
8875 Architecture (WHEA).
8877 ----------------------------------------
8878 23 January 2008. Summary of changes for version 20080123:
8880 1) ACPI CA Core Subsystem:
8882 Added the 2008 copyright to all module headers and signons. This affects
8883 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8884 the tools/utilities.
8886 Fixed a problem with the SizeOf operator when used with Package and
8888 objects. These objects have deferred execution for some arguments, and
8890 execution is now completed before the SizeOf is executed. This problem
8892 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8896 Implemented an enhancement to the interpreter "slack mode". In the
8899 an explicit return or an implicitly returned object from the last
8901 opcode, a control method will now implicitly return an integer of value 0
8903 Microsoft compatibility. (Lin Ming) BZ 392
8905 Fixed a problem with the Load operator where an exception was not
8908 the case where the table is already loaded. (Lin Ming) BZ 463
8910 Implemented support for the use of DDBHandles as an Indexed Reference, as
8912 the ACPI spec. (Lin Ming) BZ 486
8914 Implemented support for UserTerm (Method invocation) for the Unload
8916 as per the ACPI spec. (Lin Ming) BZ 580
8918 Fixed a problem with the LoadTable operator where the OemId and
8920 input strings could cause unexpected failures if they were shorter than
8922 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8924 Implemented support for UserTerm (Method invocation) for the Unload
8926 as per the ACPI spec. (Lin Ming) BZ 580
8928 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8930 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8932 Example Code and Data Size: These are the sizes for the OS-independent
8933 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8934 debug version of the code includes the debug output trace mechanism and
8936 a much larger code and data size.
8939 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8940 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8942 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8943 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8945 2) iASL Compiler/Disassembler and Tools:
8947 Implemented support in the disassembler for checksum validation on
8949 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8951 header dump at the start of the disassembly.
8953 Implemented additional debugging information in the namespace listing
8955 created during compilation. In addition to the namespace hierarchy, the
8957 pathname to each namespace object is displayed.
8959 Fixed a problem with the disassembler where invalid ACPI tables could
8961 faults or infinite loops.
8963 Fixed an unexpected parse error when using the optional "parameter types"
8964 list in a control method declaration. (Lin Ming) BZ 397
8966 Fixed a problem where two External declarations with the same name did
8968 cause an error (Lin Ming) BZ 509
8970 Implemented support for full TermArgs (adding Argx, Localx and method
8971 invocation) for the ParameterData parameter to the LoadTable operator.
8975 ----------------------------------------
8976 19 December 2007. Summary of changes for version 20071219:
8978 1) ACPI CA Core Subsystem:
8980 Implemented full support for deferred execution for the TermArg string
8981 arguments for DataTableRegion. This enables forward references and full
8982 operand resolution for the three string arguments. Similar to
8984 deferred argument execution.) Lin Ming. BZ 430
8986 Implemented full argument resolution support for the BankValue argument
8988 BankField. Previously, only constants were supported, now any TermArg may
8990 used. Lin Ming BZ 387, 393
8992 Fixed a problem with AcpiGetDevices where the search of a branch of the
8993 device tree could be terminated prematurely. In accordance with the ACPI
8994 specification, the search down the current branch is terminated if a
8996 is both not present and not functional (instead of just not present.)
9000 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
9002 the underlying AML code changed the GPE enable registers. Now, any
9004 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
9006 instead of simply ignored. Rui Zhang.
9008 Fixed a problem with Index Fields where the Index register was
9010 limited to a maximum of 32 bits. Now any size may be used.
9012 Fixed a couple memory leaks associated with "implicit return" objects
9014 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
9016 Example Code and Data Size: These are the sizes for the OS-independent
9017 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9018 debug version of the code includes the debug output trace mechanism and
9020 a much larger code and data size.
9023 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
9024 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
9026 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
9027 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
9029 ----------------------------------------
9030 14 November 2007. Summary of changes for version 20071114:
9032 1) ACPI CA Core Subsystem:
9034 Implemented event counters for each of the Fixed Events, the ACPI SCI
9035 (interrupt) itself, and control methods executed. Named
9036 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
9038 should be useful for debugging and statistics.
9040 Implemented a new external interface, AcpiGetStatistics, to retrieve the
9041 contents of the various event counters. Returns the current values for
9042 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
9043 AcpiMethodCount. The interface can be expanded in the future if new
9045 are added. Device drivers should use this interface rather than access
9049 Fixed a problem with the FromBCD and ToBCD operators. With some
9051 the ShortDivide function worked incorrectly, causing problems with the
9053 functions with large input values. A truncation from 64-bit to 32-bit
9054 inadvertently occurred. Internal BZ 435. Lin Ming
9056 Fixed a problem with Index references passed as method arguments.
9058 passed as arguments to control methods were dereferenced immediately
9060 control was passed to the called method). The references are now
9062 passed directly to the called method. BZ 5389. Lin Ming
9064 Fixed a problem with CopyObject used in conjunction with the Index
9066 The reference was incorrectly dereferenced before the copy. The reference
9068 now correctly copied. BZ 5391. Lin Ming
9070 Fixed a problem with Control Method references within Package objects.
9072 references are now correctly generated. This completes the package
9073 construction overhaul that began in version 20071019.
9075 Example Code and Data Size: These are the sizes for the OS-independent
9076 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9077 debug version of the code includes the debug output trace mechanism and
9079 a much larger code and data size.
9082 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9083 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9085 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
9086 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
9089 2) iASL Compiler/Disassembler and Tools:
9091 The AcpiExec utility now installs handlers for all of the predefined
9092 Operation Region types. New types supported are: PCI_Config, CMOS, and
9095 Fixed a problem with the 64-bit version of AcpiExec where the extended
9097 bit) address fields for the DSDT and FACS within the FADT were not being
9098 used, causing truncation of the upper 32-bits of these addresses. Lin
9102 ----------------------------------------
9103 19 October 2007. Summary of changes for version 20071019:
9105 1) ACPI CA Core Subsystem:
9107 Fixed a problem with the Alias operator when the target of the alias is a
9108 named ASL operator that opens a new scope -- Scope, Device,
9110 Processor, and ThermalZone. In these cases, any children of the original
9111 operator could not be accessed via the alias, potentially causing
9113 AE_NOT_FOUND exceptions. (BZ 9067)
9115 Fixed a problem with the Package operator where all named references were
9116 created as object references and left otherwise unresolved. According to
9118 ACPI specification, a Package can only contain Data Objects or references
9120 control methods. The implication is that named references to Data Objects
9121 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
9122 immediately upon package creation. This is the approach taken with this
9123 change. References to all other named objects (Methods, Devices, Scopes,
9124 etc.) are all now properly created as reference objects. (BZ 5328)
9126 Reverted a change to Notify handling that was introduced in version
9127 20070508. This version changed the Notify handling from asynchronous to
9128 fully synchronous (Device driver Notify handling with respect to the
9130 ASL operator). It was found that this change caused more problems than it
9131 solved and was removed by most users.
9133 Fixed a problem with the Increment and Decrement operators where the type
9135 the target object could be unexpectedly and incorrectly changed. (BZ 353)
9138 Fixed a problem with the Load and LoadTable operators where the table
9139 location within the namespace was ignored. Instead, the table was always
9140 loaded into the root or current scope. Lin Ming.
9142 Fixed a problem with the Load operator when loading a table from a buffer
9143 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
9145 Fixed a problem with the Debug object where a store of a DdbHandle
9147 object to the Debug object could cause a fault.
9149 Added a table checksum verification for the Load operator, in the case
9151 the load is from a buffer. (BZ 578).
9153 Implemented additional parameter validation for the LoadTable operator.
9155 length of the input strings SignatureString, OemIdString, and OemTableId
9157 now checked for maximum lengths. (BZ 582) Lin Ming.
9159 Example Code and Data Size: These are the sizes for the OS-independent
9160 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9161 debug version of the code includes the debug output trace mechanism and
9163 a much larger code and data size.
9166 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9167 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9169 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
9170 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
9173 2) iASL Compiler/Disassembler:
9175 Fixed a problem where if a single file was specified and the file did not
9176 exist, no error message was emitted. (Introduced with wildcard support in
9179 ----------------------------------------
9180 19 September 2007. Summary of changes for version 20070919:
9182 1) ACPI CA Core Subsystem:
9184 Designed and implemented new external interfaces to install and remove
9185 handlers for ACPI table-related events. Current events that are defined
9187 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
9188 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
9189 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
9191 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
9192 (acpi_serialized option on Linux) could cause some systems to hang during
9193 initialization. (Bob Moore) BZ 8171
9195 Fixed a problem where objects of certain types (Device, ThermalZone,
9196 Processor, PowerResource) can be not found if they are declared and
9197 referenced from within the same control method (Lin Ming) BZ 341
9199 Example Code and Data Size: These are the sizes for the OS-independent
9200 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9201 debug version of the code includes the debug output trace mechanism and
9203 a much larger code and data size.
9206 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9207 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9209 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
9210 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9213 2) iASL Compiler/Disassembler:
9215 Implemented support to allow multiple files to be compiled/disassembled
9218 single invocation. This includes command line wildcard support for both
9220 Windows and Unix versions of the compiler. This feature simplifies the
9221 disassembly and compilation of multiple ACPI tables in a single
9224 ----------------------------------------
9225 08 May 2007. Summary of changes for version 20070508:
9227 1) ACPI CA Core Subsystem:
9229 Implemented a Microsoft compatibility design change for the handling of
9231 Notify AML operator. Previously, notify handlers were dispatched and
9232 executed completely asynchronously in a deferred thread. The new design
9233 still executes the notify handlers in a different thread, but the
9235 thread that executed the Notify() now waits at a synchronization point
9237 the notify handler to complete. Some machines depend on a synchronous
9239 operator in order to operate correctly.
9241 Implemented support to allow Package objects to be passed as method
9242 arguments to the external AcpiEvaluateObject interface. Previously, this
9243 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
9244 implemented since there were no reserved control methods that required it
9247 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
9249 contained invalid non-zero values in reserved fields could cause later
9250 failures because these fields have meaning in later revisions of the
9252 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
9254 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
9256 Fixed a problem where the Global Lock handle was not properly updated if
9258 thread that acquired the Global Lock via executing AML code then
9260 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
9264 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
9265 could be corrupted if the interrupt being removed was at the head of the
9266 list. Reported by Linn Crosetto.
9268 Example Code and Data Size: These are the sizes for the OS-independent
9269 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9270 debug version of the code includes the debug output trace mechanism and
9272 a much larger code and data size.
9275 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9276 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9278 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9279 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9281 ----------------------------------------
9282 20 March 2007. Summary of changes for version 20070320:
9284 1) ACPI CA Core Subsystem:
9286 Implemented a change to the order of interpretation and evaluation of AML
9287 operand objects within the AML interpreter. The interpreter now evaluates
9288 operands in the order that they appear in the AML stream (and the
9289 corresponding ASL code), instead of in the reverse order (after the
9291 operand list has been parsed). The previous behavior caused several
9293 incompatibilities with the Microsoft AML interpreter as well as being
9294 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
9296 Implemented a change to the ACPI Global Lock support. All interfaces to
9298 global lock now allow the same thread to acquire the lock multiple times.
9299 This affects the AcpiAcquireGlobalLock external interface to the global
9301 as well as the internal use of the global lock to support AML fields -- a
9302 control method that is holding the global lock can now simultaneously
9304 AML fields that require global lock protection. Previously, in both
9306 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
9308 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
9309 Controller. There is no change to the behavior of the AML Acquire
9311 as this can already be used to acquire a mutex multiple times by the same
9312 thread. BZ 8066. With assistance from Alexey Starikovskiy.
9314 Fixed a problem where invalid objects could be referenced in the AML
9315 Interpreter after error conditions. During operand evaluation, ensure
9317 the internal "Return Object" field is cleared on error and only valid
9318 pointers are stored there. Caused occasional access to deleted objects
9320 resulted in "large reference count" warning messages. Valery Podrezov.
9322 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
9324 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
9327 Fixed an internal problem with the handling of result objects on the
9328 interpreter result stack. BZ 7872. Valery Podrezov.
9330 Removed obsolete code that handled the case where AML_NAME_OP is the
9332 of a reference (Reference.Opcode). This code was no longer necessary. BZ
9333 7874. Valery Podrezov.
9335 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
9338 remnant from the previously discontinued 16-bit support.
9340 Example Code and Data Size: These are the sizes for the OS-independent
9341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9342 debug version of the code includes the debug output trace mechanism and
9344 a much larger code and data size.
9347 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9348 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9350 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9351 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9353 ----------------------------------------
9354 26 January 2007. Summary of changes for version 20070126:
9356 1) ACPI CA Core Subsystem:
9358 Added the 2007 copyright to all module headers and signons. This affects
9359 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9362 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
9363 during a table load. A bad pointer was passed in the case where the DSDT
9365 overridden, causing a fault in this case.
9367 Example Code and Data Size: These are the sizes for the OS-independent
9368 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9369 debug version of the code includes the debug output trace mechanism and
9371 a much larger code and data size.
9374 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9375 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9377 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9378 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9380 ----------------------------------------
9381 15 December 2006. Summary of changes for version 20061215:
9383 1) ACPI CA Core Subsystem:
9385 Support for 16-bit ACPICA has been completely removed since it is no
9387 necessary and it clutters the code. All 16-bit macros, types, and
9388 conditional compiles have been removed, cleaning up and simplifying the
9390 across the entire subsystem. DOS support is no longer needed since the
9391 bootable Linux firmware kit is now available.
9393 The handler for the Global Lock is now removed during AcpiTerminate to
9394 enable a clean subsystem restart, via the implementation of the
9395 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
9398 Implemented enhancements to the multithreading support within the
9400 to enable improved multithreading debugging and evaluation of the
9404 Debugger: Enhanced the Statistics/Memory command to emit the total
9406 memory used during the execution, as well as the maximum memory consumed
9408 each of the various object types. (Valery Podrezov)
9410 Example Code and Data Size: These are the sizes for the OS-independent
9411 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9412 debug version of the code includes the debug output trace mechanism and
9414 a much larger code and data size.
9417 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9418 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9420 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9421 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9424 2) iASL Compiler/Disassembler and Tools:
9426 AcpiExec: Implemented a new option (-m) to display full memory use
9427 statistics upon subsystem/program termination. (Valery Podrezov)
9429 ----------------------------------------
9430 09 November 2006. Summary of changes for version 20061109:
9432 1) ACPI CA Core Subsystem:
9434 Optimized the Load ASL operator in the case where the source operand is
9436 operation region. Simply map the operation region memory, instead of
9437 performing a bytewise read. (Region must be of type SystemMemory, see
9440 Fixed the Load ASL operator for the case where the source operand is a
9441 region field. A buffer object is also allowed as the source operand. BZ
9444 Fixed a problem where the Load ASL operator allowed the source operand to
9446 an operation region of any type. It is now restricted to regions of type
9447 SystemMemory, as per the ACPI specification. BZ 481
9449 Additional cleanup and optimizations for the new Table Manager code.
9451 AcpiEnable will now fail if all of the required ACPI tables are not
9453 (FADT, FACS, DSDT). BZ 477
9455 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9457 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9458 manually optimized to be aligned and will not work if it is byte-packed.
9460 Example Code and Data Size: These are the sizes for the OS-independent
9461 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9462 debug version of the code includes the debug output trace mechanism and
9464 a much larger code and data size.
9467 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9468 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9470 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9471 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9474 2) iASL Compiler/Disassembler and Tools:
9476 Fixed a problem where the presence of the _OSI predefined control method
9477 within complex expressions could cause an internal compiler error.
9479 AcpiExec: Implemented full region support for multiple address spaces.
9480 SpaceId is now part of the REGION object. BZ 429
9482 ----------------------------------------
9483 11 October 2006. Summary of changes for version 20061011:
9485 1) ACPI CA Core Subsystem:
9487 Completed an AML interpreter performance enhancement for control method
9488 execution. Previously a 2-pass parse/execution, control methods are now
9489 completely parsed and executed in a single pass. This improves overall
9490 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9491 use. (Valery Podrezov + interpreter changes in version 20051202 that
9492 eliminated namespace loading during the pass one parse.)
9494 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9496 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9498 obtained and also checked for an ID match.
9500 Implemented additional support for the PCI _ADR execution: upsearch until
9502 device scope is found before executing _ADR. This allows PCI_Config
9503 operation regions to be declared locally within control methods
9507 Fixed a problem with a possible race condition between threads executing
9508 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9509 modifying AcpiWalkNamespace to (by default) ignore all temporary
9511 entries created during any concurrent control method execution. An
9512 additional namespace race condition is known to exist between
9513 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9516 Restructured the AML ParseLoop function, breaking it into several
9517 subfunctions in order to reduce CPU stack use and improve
9521 AcpiGetHandle: Fix for parameter validation to detect invalid
9523 of prefix handle and pathname. BZ 478
9525 Example Code and Data Size: These are the sizes for the OS-independent
9526 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9527 debug version of the code includes the debug output trace mechanism and
9529 a much larger code and data size.
9532 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9533 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9535 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9536 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9538 2) iASL Compiler/Disassembler and Tools:
9540 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9542 to restore original behavior.
9544 ----------------------------------------
9545 27 September 2006. Summary of changes for version 20060927:
9547 1) ACPI CA Core Subsystem:
9549 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9550 These functions now use a spinlock for mutual exclusion and the interrupt
9551 level indication flag is not needed.
9553 Fixed a problem with the Global Lock where the lock could appear to be
9554 obtained before it is actually obtained. The global lock semaphore was
9555 inadvertently created with one unit instead of zero units. (BZ 464)
9559 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9561 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9563 Example Code and Data Size: These are the sizes for the OS-independent
9564 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9565 debug version of the code includes the debug output trace mechanism and
9567 a much larger code and data size.
9570 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9571 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9573 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9574 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9577 2) iASL Compiler/Disassembler and Tools:
9579 Fixed a compilation problem with the pre-defined Resource Descriptor
9581 names where an "object does not exist" error could be incorrectly
9583 if the parent ResourceTemplate pathname places the template within a
9584 different namespace scope than the current scope. (BZ 7212)
9586 Fixed a problem where the compiler could hang after syntax errors
9588 in an ElseIf construct. (BZ 453)
9590 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9591 operator. An incorrect output filename was produced when this parameter
9593 a null string (""). Now, the original input filename is used as the AML
9594 output filename, with an ".aml" extension.
9596 Implemented a generic batch command mode for the AcpiExec utility
9598 any AML debugger command) (Valery Podrezov).
9600 ----------------------------------------
9601 12 September 2006. Summary of changes for version 20060912:
9603 1) ACPI CA Core Subsystem:
9605 Enhanced the implementation of the "serialized mode" of the interpreter
9606 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9607 specified, instead of creating a serialization semaphore per control
9609 the interpreter lock is simply no longer released before a blocking
9610 operation during control method execution. This effectively makes the AML
9611 Interpreter single-threaded. The overhead of a semaphore per-method is
9614 Fixed a regression where an error was no longer emitted if a control
9616 attempts to create 2 objects of the same name. This once again returns
9617 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9619 will dynamically serialize the control method to possible prevent future
9622 Integrated a fix for a problem with PCI Express HID detection in the PCI
9623 Config Space setup procedure. (BZ 7145)
9625 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9626 AcpiHwInitialize function - the FADT registers are now validated when the
9629 Added two new warnings during FADT verification - 1) if the FADT is
9631 than the largest known FADT version, and 2) if there is a mismatch
9634 32-bit block address and the 64-bit X counterpart (when both are non-
9637 Example Code and Data Size: These are the sizes for the OS-independent
9638 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9639 debug version of the code includes the debug output trace mechanism and
9641 a much larger code and data size.
9644 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9645 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9647 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9648 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9651 2) iASL Compiler/Disassembler and Tools:
9653 Fixed a problem with the implementation of the Switch() operator where
9655 temporary variable was declared too close to the actual Switch, instead
9657 at method level. This could cause a problem if the Switch() operator is
9658 within a while loop, causing an error on the second iteration. (BZ 460)
9660 Disassembler - fix for error emitted for unknown type for target of scope
9661 operator. Now, ignore it and continue.
9663 Disassembly of an FADT now verifies the input FADT and reports any errors
9664 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9666 Disassembly of raw data buffers with byte initialization data now
9668 each output line with the current buffer offset.
9670 Disassembly of ASF! table now includes all variable-length data fields at
9671 the end of some of the subtables.
9673 The disassembler now emits a comment if a buffer appears to be a
9674 ResourceTemplate, but cannot be disassembled as such because the EndTag
9676 not appear at the very end of the buffer.
9678 AcpiExec - Added the "-t" command line option to enable the serialized
9680 of the AML interpreter.
9682 ----------------------------------------
9683 31 August 2006. Summary of changes for version 20060831:
9685 1) ACPI CA Core Subsystem:
9687 Miscellaneous fixes for the Table Manager:
9688 - Correctly initialize internal common FADT for all 64-bit "X" fields
9689 - Fixed a couple table mapping issues during table load
9690 - Fixed a couple alignment issues for IA64
9691 - Initialize input array to zero in AcpiInitializeTables
9692 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9695 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9697 immediately disabled to prevent the waking GPE from firing again and to
9698 prevent other wake GPEs from interrupting the wake process.
9700 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9702 be used for debugging systems with a large number of ACPI interrupts.
9704 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9705 both the ACPICA headers and the disassembler.
9707 Example Code and Data Size: These are the sizes for the OS-independent
9708 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9709 debug version of the code includes the debug output trace mechanism and
9711 a much larger code and data size.
9714 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9715 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9717 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9718 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9721 2) iASL Compiler/Disassembler and Tools:
9723 Disassembler support for the DMAR ACPI table.
9725 ----------------------------------------
9726 23 August 2006. Summary of changes for version 20060823:
9728 1) ACPI CA Core Subsystem:
9730 The Table Manager component has been completely redesigned and
9731 reimplemented. The new design is much simpler, and reduces the overall
9733 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9735 now possible to obtain the ACPI tables very early during kernel
9736 initialization, even before dynamic memory management is initialized.
9737 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9739 Obsolete ACPICA interfaces:
9741 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9744 - AcpiLoadTable: Not needed.
9745 - AcpiUnloadTable: Not needed.
9747 New ACPICA interfaces:
9749 - AcpiInitializeTables: Must be called before the table manager can be
9751 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9752 allocated memory after it becomes available.
9753 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9757 Other ACPICA changes:
9759 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9761 AcpiOsUnmapMemory to free this mapping.
9762 - AcpiGetTable returns the actual mapped table. The mapping is managed
9763 internally and must not be deleted by the caller. Use of this interface
9764 causes no additional dynamic memory allocation.
9765 - AcpiFindRootPointer: Support for physical addressing has been
9767 it appeared to be unused.
9768 - The interface to AcpiOsMapMemory has changed to be consistent with the
9769 other allocation interfaces.
9770 - The interface to AcpiOsGetRootPointer has changed to eliminate
9773 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9775 bit platforms. Was previously 64 bits on all platforms.
9776 - The interface to the ACPI Global Lock acquire/release macros have
9778 slightly since ACPICA no longer keeps a local copy of the FACS with a
9779 constructed pointer to the actual global lock.
9781 Porting to the new table manager:
9783 - AcpiInitializeTables: Must be called once, and can be called anytime
9784 during the OS initialization process. It allows the host to specify an
9786 of memory to be used to store the internal version of the RSDT/XSDT (root
9787 table). This allows the host to access ACPI tables before memory
9789 is initialized and running.
9790 - AcpiReallocateRootTable: Can be called after memory management is
9792 to copy the root table to a dynamically allocated array, freeing up the
9793 scratch memory specified in the call to AcpiInitializeTables.
9794 - AcpiSubsystemInitialize: This existing interface is independent of the
9795 Table Manager, and does not have to be called before the Table Manager
9797 be used, it only must be called before the rest of ACPICA can be used.
9798 - ACPI Tables: Some changes have been made to the names and structure of
9800 actbl.h and actbl1.h header files and may require changes to existing
9802 For example, bitfields have been completely removed because of their lack
9804 portability across C compilers.
9805 - Update interfaces to the Global Lock acquire/release macros if local
9806 versions are used. (see acwin.h)
9808 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9812 Example Code and Data Size: These are the sizes for the OS-independent
9813 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9814 debug version of the code includes the debug output trace mechanism and
9816 a much larger code and data size.
9819 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9820 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9822 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9823 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9826 2) iASL Compiler/Disassembler and Tools:
9828 No changes for this release.
9830 ----------------------------------------
9831 21 July 2006. Summary of changes for version 20060721:
9833 1) ACPI CA Core Subsystem:
9835 The full source code for the ASL test suite used to validate the iASL
9836 compiler and the ACPICA core subsystem is being released with the ACPICA
9837 source for the first time. The source is contained in a separate package
9839 consists of over 1100 files that exercise all ASL/AML operators. The
9841 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9845 Completed a new design and implementation for support of the ACPI Global
9846 Lock. On the OS side, the global lock is now treated as a standard AML
9847 mutex. Previously, multiple OS threads could "acquire" the global lock
9848 simultaneously. However, this could cause the BIOS to be starved out of
9850 lock - especially in cases such as the Embedded Controller driver where
9851 there is a tight coupling between the OS and the BIOS.
9853 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9854 The Global Lock interrupt handler no longer queues the execution of a
9855 separate thread to signal the global lock semaphore. Instead, the
9857 is signaled directly from the interrupt handler.
9859 Implemented support within the AML interpreter for package objects that
9860 contain a larger AML length (package list length) than the package
9862 count. In this case, the length of the package is truncated to match the
9863 package element count. Some BIOS code apparently modifies the package
9865 on the fly, and this change supports this behavior. Provides
9867 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9869 Implemented a temporary fix for the BankValue parameter of a Bank Field
9871 support all constant values, now including the Zero and One opcodes.
9872 Evaluation of this parameter must eventually be converted to a full
9874 evaluation. A not-implemented error is now returned (temporarily) for
9876 constant values for this parameter.
9878 Fixed problem reports (Fiodor Suietov) integrated:
9879 - Fix for premature object deletion after CopyObject on Operation Region
9883 Example Code and Data Size: These are the sizes for the OS-independent
9884 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9885 debug version of the code includes the debug output trace mechanism and
9887 a much larger code and data size.
9890 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9891 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9893 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9894 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9897 2) iASL Compiler/Disassembler and Tools:
9899 No changes for this release.
9901 ----------------------------------------
9902 07 July 2006. Summary of changes for version 20060707:
9904 1) ACPI CA Core Subsystem:
9906 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9907 that do not allow the initialization of address pointers within packed
9908 structures - even though the hardware itself may support misaligned
9909 transfers. Some of the debug data structures are packed by default to
9912 Added an error message for the case where AcpiOsGetThreadId() returns
9914 A non-zero value is required by the core ACPICA code to ensure the proper
9915 operation of AML mutexes and recursive control methods.
9917 The DSDT is now the only ACPI table that determines whether the AML
9918 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9920 the hooks for per-table 32/64 switching have been removed from the code.
9922 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9924 Fixed a possible leak of an OwnerID in the error path of
9925 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9926 deletion to a single place in AcpiTbUninstallTable to correct possible
9928 when using the AcpiTbDeleteTablesByType interface (with assistance from
9931 Fixed a problem with Serialized control methods where the semaphore
9932 associated with the method could be over-signaled after multiple method
9935 Fixed two issues with the locking of the internal namespace data
9937 Both the Unload() operator and AcpiUnloadTable interface now lock the
9938 namespace during the namespace deletion associated with the table unload
9939 (with assistance from Linn Crosetto.)
9941 Fixed problem reports (Valery Podrezov) integrated:
9942 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9944 Fixed problem reports (Fiodor Suietov) integrated:
9945 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9946 - On Address Space handler deletion, needless deactivation call (BZ 374)
9947 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9949 - Possible memory leak, Notify sub-objects of Processor, Power,
9952 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9953 - Minimum Length of RSDT should be validated (BZ 379)
9954 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9956 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9960 Example Code and Data Size: These are the sizes for the OS-independent
9961 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9962 debug version of the code includes the debug output trace mechanism and
9964 a much larger code and data size.
9967 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9968 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9970 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9971 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9974 2) iASL Compiler/Disassembler and Tools:
9976 Fixed problem reports:
9977 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9980 ----------------------------------------
9981 23 June 2006. Summary of changes for version 20060623:
9983 1) ACPI CA Core Subsystem:
9985 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9986 allows the type to be customized to the host OS for improved efficiency
9987 (since a spinlock is usually a very small object.)
9989 Implemented support for "ignored" bits in the ACPI registers. According
9991 the ACPI specification, these bits should be preserved when writing the
9992 registers via a read/modify/write cycle. There are 3 bits preserved in
9994 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9996 Implemented the initial deployment of new OSL mutex interfaces. Since
9998 host operating systems have separate mutex and semaphore objects, this
9999 feature was requested. The base code now uses mutexes (and the new mutex
10000 interfaces) wherever a binary semaphore was used previously. However, for
10001 the current release, the mutex interfaces are defined as macros to map
10003 to the existing semaphore interfaces. Therefore, no OSL changes are
10005 at this time. (See acpiosxf.h)
10007 Fixed several problems with the support for the control method SyncLevel
10008 parameter. The SyncLevel now works according to the ACPI specification
10010 in concert with the Mutex SyncLevel parameter, since the current
10012 is a property of the executing thread. Mutual exclusion for control
10014 is now implemented with a mutex instead of a semaphore.
10016 Fixed three instances of the use of the C shift operator in the bitfield
10017 support code (exfldio.c) to avoid the use of a shift value larger than
10019 target data width. The behavior of C compilers is undefined in this case
10021 can cause unpredictable results, and therefore the case must be detected
10023 avoided. (Fiodor Suietov)
10025 Added an info message whenever an SSDT or OEM table is loaded dynamically
10026 via the Load() or LoadTable() ASL operators. This should improve
10028 capability since it will show exactly what tables have been loaded
10030 the tables present in the RSDT/XSDT.)
10032 Example Code and Data Size: These are the sizes for the OS-independent
10033 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10034 debug version of the code includes the debug output trace mechanism and
10036 a much larger code and data size.
10039 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
10040 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
10042 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
10043 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
10046 2) iASL Compiler/Disassembler and Tools:
10048 No changes for this release.
10050 ----------------------------------------
10051 08 June 2006. Summary of changes for version 20060608:
10053 1) ACPI CA Core Subsystem:
10055 Converted the locking mutex used for the ACPI hardware to a spinlock.
10057 change should eliminate all problems caused by attempting to acquire a
10058 semaphore at interrupt level, and it means that all ACPICA external
10059 interfaces that directly access the ACPI hardware can be safely called
10061 interrupt level. OSL code that implements the semaphore interfaces should
10063 able to eliminate any workarounds for being called at interrupt level.
10065 Fixed a regression introduced in 20060526 where the ACPI device
10066 initialization could be prematurely aborted with an AE_NOT_FOUND if a
10068 did not have an optional _INI method.
10070 Fixed an IndexField issue where a write to the Data Register should be
10071 limited in size to the AccessSize (width) of the IndexField itself. (BZ
10075 Fixed problem reports (Valery Podrezov) integrated:
10076 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
10078 Fixed problem reports (Fiodor Suietov) integrated:
10079 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
10081 Removed four global mutexes that were obsolete and were no longer being
10084 Example Code and Data Size: These are the sizes for the OS-independent
10085 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10086 debug version of the code includes the debug output trace mechanism and
10088 a much larger code and data size.
10091 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10092 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10094 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
10095 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
10098 2) iASL Compiler/Disassembler and Tools:
10100 Fixed a fault when using -g option (get tables from registry) on Windows
10103 Fixed problem reports integrated:
10104 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
10105 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
10107 - Global table revision override (-r) is ignored (BZ 413)
10109 ----------------------------------------
10110 26 May 2006. Summary of changes for version 20060526:
10112 1) ACPI CA Core Subsystem:
10114 Restructured, flattened, and simplified the internal interfaces for
10115 namespace object evaluation - resulting in smaller code, less CPU stack
10117 and fewer interfaces. (With assistance from Mikhail Kouzmich)
10119 Fixed a problem with the CopyObject operator where the first parameter
10121 not typed correctly for the parser, interpreter, compiler, and
10123 Caused various errors and unexpected behavior.
10125 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
10126 produced incorrect results with some C compilers. Since the behavior of C
10127 compilers when the shift value is larger than the datatype width is
10128 apparently not well defined, the interpreter now detects this condition
10130 simply returns zero as expected in all such cases. (BZ 395)
10132 Fixed problem reports (Valery Podrezov) integrated:
10133 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
10134 - Allow interpreter to handle nested method declarations (BZ 5361)
10136 Fixed problem reports (Fiodor Suietov) integrated:
10137 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
10139 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
10141 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
10142 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
10143 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
10144 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
10145 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
10146 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
10147 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
10149 - Status of the Global Initialization Handler call not used (BZ 366)
10150 - Incorrect object parameter to Global Initialization Handler (BZ 367)
10152 Example Code and Data Size: These are the sizes for the OS-independent
10153 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10154 debug version of the code includes the debug output trace mechanism and
10156 a much larger code and data size.
10159 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10160 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10162 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
10163 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
10166 2) iASL Compiler/Disassembler and Tools:
10168 Modified the parser to allow the names IO, DMA, and IRQ to be used as
10169 namespace identifiers with no collision with existing resource descriptor
10170 macro names. This provides compatibility with other ASL compilers and is
10171 most useful for disassembly/recompilation of existing tables without
10173 errors. (With assistance from Thomas Renninger)
10175 Disassembler: fixed an incorrect disassembly problem with the
10176 DataTableRegion and CopyObject operators. Fixed a possible fault during
10177 disassembly of some Alias operators.
10179 ----------------------------------------
10180 12 May 2006. Summary of changes for version 20060512:
10182 1) ACPI CA Core Subsystem:
10184 Replaced the AcpiOsQueueForExecution interface with a new interface named
10185 AcpiOsExecute. The major difference is that the new interface does not
10187 a Priority parameter, this appeared to be useless and has been replaced
10190 Type parameter. The Type tells the host what type of execution is being
10191 requested, such as global lock handler, notify handler, GPE handler, etc.
10192 This allows the host to queue and execute the request as appropriate for
10194 request type, possibly using different work queues and different
10196 for the various request types. This enables fixes for multithreading
10197 deadlock problems such as BZ #5534, and will require changes to all
10199 OS interface layers. (Alexey Starikovskiy and Bob Moore)
10201 Fixed a possible memory leak associated with the support for the so-
10203 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
10206 Fixed a problem with the Load() operator where a table load from an
10207 operation region could overwrite an internal table buffer by up to 7
10209 and cause alignment faults on IPF systems. (With assistance from Luming
10212 Example Code and Data Size: These are the sizes for the OS-independent
10213 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10214 debug version of the code includes the debug output trace mechanism and
10216 a much larger code and data size.
10219 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10220 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10222 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10223 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10227 2) iASL Compiler/Disassembler and Tools:
10229 Disassembler: Implemented support to cross reference the internal
10231 and automatically generate ASL External() statements for symbols not
10233 within the current table being disassembled. This will simplify the
10234 disassembly and recompilation of interdependent tables such as SSDTs
10236 these statements will no longer have to be added manually.
10238 Disassembler: Implemented experimental support to automatically detect
10239 invocations of external control methods and generate appropriate
10241 statements. This is problematic because the AML cannot be correctly
10243 until the number of arguments for each control method is known.
10245 standalone method invocations and invocations as the source operand of a
10246 Store() statement are supported.
10248 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
10249 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
10250 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
10251 more readable and likely closer to the original ASL source.
10253 ----------------------------------------
10254 21 April 2006. Summary of changes for version 20060421:
10256 1) ACPI CA Core Subsystem:
10258 Removed a device initialization optimization introduced in 20051216 where
10259 the _STA method was not run unless an _INI was also present for the same
10260 device. This optimization could cause problems because it could allow
10262 methods to be run within a not-present device subtree. (If a not-present
10263 device had no _INI, _STA would not be run, the not-present status would
10265 be discovered, and the children of the device would be incorrectly
10268 Implemented a new _STA optimization where namespace subtrees that do not
10269 contain _INI are identified and ignored during device initialization.
10270 Selectively running _STA can significantly improve boot time on large
10271 machines (with assistance from Len Brown.)
10273 Implemented support for the device initialization case where the returned
10274 _STA flags indicate a device not-present but functioning. In this case,
10276 is not run, but the device children are examined for presence, as per the
10277 ACPI specification.
10279 Implemented an additional change to the IndexField support in order to
10280 conform to MS behavior. The value written to the Index Register is not
10281 simply a byte offset, it is a byte offset in units of the access width of
10282 the parent Index Field. (Fiodor Suietov)
10284 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
10285 interface is called during the creation of all AML operation regions, and
10286 allows the host OS to exert control over what addresses it will allow the
10287 AML code to access. Operation Regions whose addresses are disallowed will
10288 cause a runtime exception when they are actually accessed (will not
10290 or abort table loading.) See oswinxf or osunixxf for an example
10293 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
10294 interface allows the host OS to match the various "optional"
10295 interface/behavior strings for the _OSI predefined control method as
10296 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
10297 for an example implementation.
10299 Restructured and corrected various problems in the exception handling
10301 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
10302 (with assistance from Takayoshi Kochi.)
10304 Modified the Linux source converter to ignore quoted string literals
10306 converting identifiers from mixed to lower case. This will correct
10308 with the disassembler and other areas where such strings must not be
10311 The ACPI_FUNCTION_* macros no longer require quotes around the function
10312 name. This allows the Linux source converter to convert the names, now
10314 the converter ignores quoted strings.
10316 Example Code and Data Size: These are the sizes for the OS-independent
10317 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10318 debug version of the code includes the debug output trace mechanism and
10320 a much larger code and data size.
10324 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10325 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10327 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10328 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10331 2) iASL Compiler/Disassembler and Tools:
10333 Implemented 3 new warnings for iASL, and implemented multiple warning
10337 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
10339 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
10340 check for the possible timeout, a warning is issued.
10342 2) Useless operators: If an ASL operator does not specify an optional
10344 operand and it also does not use the function return value from the
10345 operator, a warning is issued since the operator effectively does
10348 3) Unreferenced objects: If a namespace object is created, but never
10349 referenced, a warning is issued. This is a warning level 2 since there
10351 cases where this is ok, such as when a secondary table is loaded that
10353 the unreferenced objects. Even so, care is taken to only flag objects
10355 don't look like they will ever be used. For example, the reserved methods
10356 (starting with an underscore) are usually not referenced because it is
10357 expected that the OS will invoke them.
10359 ----------------------------------------
10360 31 March 2006. Summary of changes for version 20060331:
10362 1) ACPI CA Core Subsystem:
10364 Implemented header file support for the following additional ACPI tables:
10365 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
10367 all current and known ACPI tables are now defined in the ACPICA headers
10369 are available for use by device drivers and other software.
10371 Implemented support to allow tables that contain ACPI names with invalid
10372 characters to be loaded. Previously, this would cause the table load to
10373 fail, but since there are several known cases of such tables on existing
10374 machines, this change was made to enable ACPI support for them. Also,
10376 matches the behavior of the Microsoft ACPI implementation.
10378 Fixed a couple regressions introduced during the memory optimization in
10380 20060317 release. The namespace node definition required additional
10381 reorganization and an internal datatype that had been changed to 8-bit
10383 restored to 32-bit. (Valery Podrezov)
10385 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
10386 could be passed through to AcpiOsReleaseObject which is unexpected. Such
10387 null pointers are now trapped and ignored, matching the behavior of the
10388 previous implementation before the deployment of AcpiOsReleaseObject.
10389 (Valery Podrezov, Fiodor Suietov)
10391 Fixed a memory mapping leak during the deletion of a SystemMemory
10393 region where a cached memory mapping was not deleted. This became a
10394 noticeable problem for operation regions that are defined within
10396 used control methods. (Dana Meyers)
10398 Reorganized the ACPI table header files into two main files: one for the
10399 ACPI tables consumed by the ACPICA core, and another for the
10401 ACPI tables that are consumed by the drivers and other software. The
10403 FADT definitions were merged into one common section and three different
10404 tables (ACPI 1.0, 1.0+, and 2.0)
10406 Example Code and Data Size: These are the sizes for the OS-independent
10407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10408 debug version of the code includes the debug output trace mechanism and
10410 a much larger code and data size.
10413 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10414 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10416 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10417 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10420 2) iASL Compiler/Disassembler and Tools:
10422 Disassembler: Implemented support to decode and format all non-AML ACPI
10423 tables (tables other than DSDTs and SSDTs.) This includes the new tables
10424 added to the ACPICA headers, therefore all current and known ACPI tables
10428 Disassembler: The change to allow ACPI names with invalid characters also
10429 enables the disassembly of such tables. Invalid characters within names
10431 changed to '*' to make the name printable; the iASL compiler will still
10432 generate an error for such names, however, since this is an invalid ACPI
10435 Implemented an option for AcpiXtract (-a) to extract all tables found in
10437 input file. The default invocation extracts only the DSDTs and SSDTs.
10439 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
10440 makefile for the AcpiXtract utility.
10442 ----------------------------------------
10443 17 March 2006. Summary of changes for version 20060317:
10445 1) ACPI CA Core Subsystem:
10447 Implemented the use of a cache object for all internal namespace nodes.
10448 Since there are about 1000 static nodes in a typical system, this will
10449 decrease memory use for cache implementations that minimize per-
10451 overhead (such as a slab allocator.)
10453 Removed the reference count mechanism for internal namespace nodes, since
10455 was deemed unnecessary. This reduces the size of each namespace node by
10456 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10458 and 32 bytes for the 64-bit case.
10460 Optimized several internal data structures to reduce object size on 64-
10462 platforms by packing data within the 64-bit alignment. This includes the
10463 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10464 instances corresponding to the namespace objects.
10466 Added two new strings for the predefined _OSI method: "Windows 2001.1
10468 and "Windows 2006".
10470 Split the allocation tracking mechanism out to a separate file, from
10471 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10472 application-level code. Kernels may wish to not include uttrack.c in
10475 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10477 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10480 Code and Data Size: These are the sizes for the acpica.lib produced by
10482 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10484 driver or OSPM code. The debug version of the code includes the debug
10486 trace mechanism and has a much larger code and data size. Note that these
10487 values will vary depending on the efficiency of the compiler and the
10488 compiler options used during generation.
10491 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10492 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10494 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10495 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10498 2) iASL Compiler/Disassembler and Tools:
10500 Implemented an ANSI C version of the acpixtract utility. This version
10502 automatically extract the DSDT and all SSDTs from the input acpidump text
10503 file and dump the binary output to separate files. It can also display a
10504 summary of the input file including the headers for each table found and
10505 will extract any single ACPI table, with any signature. (See
10506 source/tools/acpixtract)
10508 ----------------------------------------
10509 10 March 2006. Summary of changes for version 20060310:
10511 1) ACPI CA Core Subsystem:
10513 Tagged all external interfaces to the subsystem with the new
10514 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10516 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10517 macro. The default definition is NULL.
10519 Added the ACPI_THREAD_ID type for the return value from
10521 This allows the host to define this as necessary to simplify kernel
10522 integration. The default definition is ACPI_NATIVE_UINT.
10524 Fixed two interpreter problems related to error processing, the deletion
10526 objects, and placing invalid pointers onto the internal operator result
10527 stack. BZ 6028, 6151 (Valery Podrezov)
10529 Increased the reference count threshold where a warning is emitted for
10531 reference counts in order to eliminate unnecessary warnings on systems
10533 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10536 Due to universal disagreement as to the meaning of the 'c' in the
10538 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10539 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10540 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10543 Code and Data Size: These are the sizes for the acpica.lib produced by
10545 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10547 driver or OSPM code. The debug version of the code includes the debug
10549 trace mechanism and has a much larger code and data size. Note that these
10550 values will vary depending on the efficiency of the compiler and the
10551 compiler options used during generation.
10554 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10555 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10557 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10558 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10561 2) iASL Compiler/Disassembler:
10563 Disassembler: implemented support for symbolic resource descriptor
10564 references. If a CreateXxxxField operator references a fixed offset
10567 resource descriptor, a name is assigned to the descriptor and the offset
10569 translated to the appropriate resource tag and pathname. The addition of
10570 this support brings the disassembled code very close to the original ASL
10571 source code and helps eliminate run-time errors when the disassembled
10573 is modified (and recompiled) in such a way as to invalidate the original
10576 Implemented support for a Descriptor Name as the last parameter to the
10578 Register() macro. This parameter was inadvertently left out of the ACPI
10579 specification, and will be added for ACPI 3.0b.
10581 Fixed a problem where the use of the "_OSI" string (versus the full path
10582 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10584 Fixed a problem with the error message that occurs when an invalid string
10586 used for a _HID object (such as one with an embedded asterisk:
10588 The correct message is now displayed.
10590 ----------------------------------------
10591 17 February 2006. Summary of changes for version 20060217:
10593 1) ACPI CA Core Subsystem:
10595 Implemented a change to the IndexField support to match the behavior of
10597 Microsoft AML interpreter. The value written to the Index register is now
10599 byte offset, no longer an index based upon the width of the Data
10601 This should fix IndexField problems seen on some machines where the Data
10602 register is not exactly one byte wide. The ACPI specification will be
10603 clarified on this point.
10605 Fixed a problem where several resource descriptor types could overrun the
10606 internal descriptor buffer due to size miscalculation: VendorShort,
10607 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10608 affect all platforms.
10610 Fixed a problem where individual resource descriptors were misaligned
10612 the internal buffer, causing alignment faults on IA64 platforms.
10614 Code and Data Size: These are the sizes for the acpica.lib produced by
10616 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10618 driver or OSPM code. The debug version of the code includes the debug
10620 trace mechanism and has a much larger code and data size. Note that these
10621 values will vary depending on the efficiency of the compiler and the
10622 compiler options used during generation.
10625 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10626 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10628 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10629 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10632 2) iASL Compiler/Disassembler:
10634 Implemented support for new reserved names: _WDG and _WED are Microsoft
10635 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10636 defined method (Throttling Depth Limit.)
10638 Fixed a problem where a zero-length VendorShort or VendorLong resource
10639 descriptor was incorrectly emitted as a descriptor of length one.
10641 ----------------------------------------
10642 10 February 2006. Summary of changes for version 20060210:
10644 1) ACPI CA Core Subsystem:
10646 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10647 normal execution. These became apparent after the conversion from
10650 Fixed a problem where the CreateField operator could hang if the BitIndex
10652 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10654 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10655 failed with an exception. This also fixes a couple of related RefOf and
10656 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10658 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10660 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10664 Implemented a memory cleanup at the end of the execution of each
10666 of an AML While() loop, preventing the accumulation of outstanding
10668 (Valery Podrezov, BZ 5427)
10670 Eliminated a chunk of duplicate code in the object resolution code.
10674 Fixed several warnings during the 64-bit code generation.
10676 The AcpiSrc source code conversion tool now inserts one line of
10678 after an if() statement that is followed immediately by a comment,
10680 readability of the Linux code.
10682 Code and Data Size: The current and previous library sizes for the core
10683 subsystem are shown below. These are the code and data sizes for the
10684 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10686 values do not include any ACPI driver or OSPM code. The debug version of
10688 code includes the debug output trace mechanism and has a much larger code
10689 and data size. Note that these values will vary depending on the
10691 of the compiler and the compiler options used during generation.
10694 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10695 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10697 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10698 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10701 2) iASL Compiler/Disassembler:
10703 Fixed a problem with the disassembly of a BankField operator with a
10705 expression for the BankValue parameter.
10707 ----------------------------------------
10708 27 January 2006. Summary of changes for version 20060127:
10710 1) ACPI CA Core Subsystem:
10712 Implemented support in the Resource Manager to allow unresolved
10714 references within resource package objects for the _PRT method. This
10716 is in addition to the previously implemented unresolved reference support
10717 within the AML parser. If the interpreter slack mode is enabled, these
10718 unresolved references will be passed through to the caller as a NULL
10722 Implemented and deployed new macros and functions for error and warning
10723 messages across the subsystem. These macros are simpler and generate less
10724 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10725 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10726 macros remain defined to allow ACPI drivers time to migrate to the new
10729 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10731 Acquire/Release Lock OSL interfaces.
10733 Fixed a problem where Alias ASL operators are sometimes not correctly
10734 resolved, in both the interpreter and the iASL compiler.
10736 Fixed several problems with the implementation of the
10737 ConcatenateResTemplate
10738 ASL operator. As per the ACPI specification, zero length buffers are now
10739 treated as a single EndTag. One-length buffers always cause a fatal
10740 exception. Non-zero length buffers that do not end with a full 2-byte
10742 cause a fatal exception.
10744 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10745 interface. (With assistance from Thomas Renninger)
10747 Code and Data Size: The current and previous library sizes for the core
10748 subsystem are shown below. These are the code and data sizes for the
10749 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10751 values do not include any ACPI driver or OSPM code. The debug version of
10753 code includes the debug output trace mechanism and has a much larger code
10754 and data size. Note that these values will vary depending on the
10756 of the compiler and the compiler options used during generation.
10759 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10760 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10762 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10763 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10766 2) iASL Compiler/Disassembler:
10768 Fixed an internal error that was generated for any forward references to
10772 ----------------------------------------
10773 13 January 2006. Summary of changes for version 20060113:
10775 1) ACPI CA Core Subsystem:
10777 Added 2006 copyright to all module headers and signons. This affects
10778 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10781 Enhanced the ACPICA error reporting in order to simplify user migration
10783 the non-debug version of ACPICA. Replaced all instances of the
10784 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10786 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10787 respectively. This preserves all error and warning messages in the non-
10789 version of the ACPICA code (this has been referred to as the "debug lite"
10790 option.) Over 200 cases were converted to create a total of over 380
10791 error/warning messages across the ACPICA code. This increases the code
10793 data size of the default non-debug version of the code somewhat (about
10795 but all error/warning reporting may be disabled if desired (and code
10796 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10797 configuration option. The size of the debug version of ACPICA remains
10801 Fixed a memory leak within the AML Debugger "Set" command. One object was
10802 not properly deleted for every successful invocation of the command.
10804 Code and Data Size: The current and previous library sizes for the core
10805 subsystem are shown below. These are the code and data sizes for the
10806 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10808 values do not include any ACPI driver or OSPM code. The debug version of
10810 code includes the debug output trace mechanism and has a much larger code
10811 and data size. Note that these values will vary depending on the
10813 of the compiler and the compiler options used during generation.
10816 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10817 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10819 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10820 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10823 2) iASL Compiler/Disassembler:
10825 The compiler now officially supports the ACPI 3.0a specification that was
10826 released on December 30, 2005. (Specification is available at
10829 ----------------------------------------
10830 16 December 2005. Summary of changes for version 20051216:
10832 1) ACPI CA Core Subsystem:
10834 Implemented optional support to allow unresolved names within ASL Package
10835 objects. A null object is inserted in the package when a named reference
10836 cannot be located in the current namespace. Enabled via the interpreter
10837 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10839 that contain such code.
10841 Implemented an optimization to the initialization sequence that can
10843 boot time. During ACPI device initialization, the _STA method is now run
10845 and only if the _INI method exists. The _STA method is used to determine
10847 the device is present; An _INI can only be run if _STA returns present,
10849 it is a waste of time to run the _STA method if the _INI does not exist.
10850 (Prototype and assistance from Dong Wei)
10852 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10854 available in the current compiler. Otherwise, the default (void *) cast
10858 Fixed some possible memory leaks found within the execution path of the
10859 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10861 Fixed a problem introduced in the 20051202 release where an exception is
10862 generated during method execution if a control method attempts to declare
10865 Moved resource descriptor string constants that are used by both the AML
10866 disassembler and AML debugger to the common utilities directory so that
10867 these components are independent.
10869 Implemented support in the AcpiExec utility (-e switch) to globally
10871 exceptions during control method execution (method is not aborted.)
10873 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10876 Code and Data Size: The current and previous library sizes for the core
10877 subsystem are shown below. These are the code and data sizes for the
10878 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10880 values do not include any ACPI driver or OSPM code. The debug version of
10882 code includes the debug output trace mechanism and has a much larger code
10883 and data size. Note that these values will vary depending on the
10885 of the compiler and the compiler options used during generation.
10888 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10889 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10891 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10892 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10895 2) iASL Compiler/Disassembler:
10897 Fixed a problem where a CPU stack overflow fault could occur if a
10899 method call was made from within a Return statement.
10901 ----------------------------------------
10902 02 December 2005. Summary of changes for version 20051202:
10904 1) ACPI CA Core Subsystem:
10906 Modified the parsing of control methods to no longer create namespace
10907 objects during the first pass of the parse. Objects are now created only
10908 during the execute phase, at the moment the namespace creation operator
10910 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10912 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10913 reentrant control methods are protected by an AML mutex. The mutex will
10915 correctly block multiple threads from attempting to create the same
10919 Increased the number of available Owner Ids for namespace object tracking
10920 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10922 some machines with a large number of ACPI tables (either static or
10925 Fixed a problem with the AcpiExec utility where a fault could occur when
10927 -b switch (batch mode) is used.
10929 Enhanced the namespace dump routine to output the owner ID for each
10932 Code and Data Size: The current and previous library sizes for the core
10933 subsystem are shown below. These are the code and data sizes for the
10934 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10936 values do not include any ACPI driver or OSPM code. The debug version of
10938 code includes the debug output trace mechanism and has a much larger code
10939 and data size. Note that these values will vary depending on the
10941 of the compiler and the compiler options used during generation.
10944 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10945 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10947 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10948 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10951 2) iASL Compiler/Disassembler:
10953 Fixed a parse error during compilation of certain Switch/Case constructs.
10955 simplify the parse, the grammar now allows for multiple Default
10957 and this error is now detected and flagged during the analysis phase.
10959 Disassembler: The disassembly now includes the contents of the original
10960 table header within a comment at the start of the file. This includes the
10961 name and version of the original ASL compiler.
10963 ----------------------------------------
10964 17 November 2005. Summary of changes for version 20051117:
10966 1) ACPI CA Core Subsystem:
10968 Fixed a problem in the AML parser where the method thread count could be
10969 decremented below zero if any errors occurred during the method parse
10971 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10973 This also fixed a related regression with the mechanism that detects and
10974 corrects methods that cannot properly handle reentrancy (related to the
10975 deployment of the new OwnerId mechanism.)
10977 Eliminated the pre-parsing of control methods (to detect errors) during
10978 table load. Related to the problem above, this was causing unwind issues
10980 any errors occurred during the parse, and it seemed to be overkill. A
10982 load should not be aborted if there are problems with any single control
10983 method, thus rendering this feature rather pointless.
10985 Fixed a problem with the new table-driven resource manager where an
10987 buffer overflow could occur for small resource templates.
10989 Implemented a new external interface, AcpiGetVendorResource. This
10991 will find and return a vendor-defined resource descriptor within a _CRS
10993 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10996 Removed the length limit (200) on string objects as per the upcoming ACPI
10997 3.0A specification. This affects the following areas of the interpreter:
10999 any implicit conversion of a Buffer to a String, 2) a String object
11001 of the ASL Concatentate operator, 3) the String object result of the ASL
11004 Fixed a problem in the Windows OS interface layer (OSL) where a
11006 on a semaphore object would incorrectly timeout. This allows the
11007 multithreading features of the AcpiExec utility to work properly under
11010 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
11011 the recently added file named "utresrc.c".
11013 Code and Data Size: The current and previous library sizes for the core
11014 subsystem are shown below. These are the code and data sizes for the
11015 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11017 values do not include any ACPI driver or OSPM code. The debug version of
11019 code includes the debug output trace mechanism and has a much larger code
11020 and data size. Note that these values will vary depending on the
11022 of the compiler and the compiler options used during generation.
11025 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
11026 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11028 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
11029 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11032 2) iASL Compiler/Disassembler:
11034 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
11035 specification. For the iASL compiler, this means that string literals
11037 the source ASL can be of any length.
11039 Enhanced the listing output to dump the AML code for resource descriptors
11040 immediately after the ASL code for each descriptor, instead of in a block
11042 the end of the entire resource template.
11044 Enhanced the compiler debug output to dump the entire original parse tree
11045 constructed during the parse phase, before any transforms are applied to
11047 tree. The transformed tree is dumped also.
11049 ----------------------------------------
11050 02 November 2005. Summary of changes for version 20051102:
11052 1) ACPI CA Core Subsystem:
11054 Modified the subsystem initialization sequence to improve GPE support.
11056 GPE initialization has been split into two parts in order to defer
11058 of the _PRW methods (Power Resources for Wake) until after the hardware
11060 fully initialized and the SCI handler is installed. This allows the _PRW
11061 methods to access fields protected by the Global Lock. This will fix
11063 where a NO_GLOBAL_LOCK exception has been seen during initialization.
11065 Converted the ACPI internal object disassemble and display code within
11067 AML debugger to fully table-driven operation, reducing code size and
11068 increasing maintainability.
11070 Fixed a regression with the ConcatenateResTemplate() ASL operator
11072 in the 20051021 release.
11074 Implemented support for "local" internal ACPI object types within the
11075 debugger "Object" command and the AcpiWalkNamespace external interfaces.
11076 These local types include RegionFields, BankFields, IndexFields, Alias,
11080 Moved common AML resource handling code into a new file, "utresrc.c".
11082 code is shared by both the Resource Manager and the AML Debugger.
11084 Code and Data Size: The current and previous library sizes for the core
11085 subsystem are shown below. These are the code and data sizes for the
11086 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11088 values do not include any ACPI driver or OSPM code. The debug version of
11090 code includes the debug output trace mechanism and has a much larger code
11091 and data size. Note that these values will vary depending on the
11093 of the compiler and the compiler options used during generation.
11096 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11097 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11099 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
11100 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
11103 2) iASL Compiler/Disassembler:
11105 Fixed a problem with very large initializer lists (more than 4000
11107 for both Buffer and Package objects where the parse stack could overflow.
11109 Enhanced the pre-compile source code scan for non-ASCII characters to
11111 characters within comment fields. The scan is now always performed and is
11113 longer optional, detecting invalid characters within a source file
11114 immediately rather than during the parse phase or later.
11116 Enhanced the ASL grammar definition to force early reductions on all
11118 style grammar elements so that the overall parse stack usage is greatly
11119 reduced. This should improve performance and reduce the possibility of
11123 Eliminated all reduce/reduce conflicts in the iASL parser generation.
11125 with the addition of a %expected statement, the compiler generates from
11126 source with no warnings.
11128 Fixed a possible segment fault in the disassembler if the input filename
11129 does not contain a "dot" extension (Thomas Renninger).
11131 ----------------------------------------
11132 21 October 2005. Summary of changes for version 20051021:
11134 1) ACPI CA Core Subsystem:
11136 Implemented support for the EM64T and other x86-64 processors. This
11137 essentially entails recognizing that these processors support non-aligned
11138 memory transfers. Previously, all 64-bit processors were assumed to lack
11139 hardware support for non-aligned transfers.
11141 Completed conversion of the Resource Manager to nearly full table-driven
11142 operation. Specifically, the resource conversion code (convert AML to
11143 internal format and the reverse) and the debug code to dump internal
11144 resource descriptors are fully table-driven, reducing code and data size
11146 improving maintainability.
11148 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
11150 on 64-bit processors instead of a fixed 32-bit word. (With assistance
11152 Alexey Starikovskiy)
11154 Implemented support within the resource conversion code for the Type-
11155 Specific byte within the various ACPI 3.0 *WordSpace macros.
11157 Fixed some issues within the resource conversion code for the type-
11159 flags for both Memory and I/O address resource descriptors. For Memory,
11160 implemented support for the MTP and TTP flags. For I/O, split the TRS and
11161 TTP flags into two separate fields.
11163 Code and Data Size: The current and previous library sizes for the core
11164 subsystem are shown below. These are the code and data sizes for the
11165 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11167 values do not include any ACPI driver or OSPM code. The debug version of
11169 code includes the debug output trace mechanism and has a much larger code
11170 and data size. Note that these values will vary depending on the
11172 of the compiler and the compiler options used during generation.
11175 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11176 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11178 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
11179 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
11183 2) iASL Compiler/Disassembler:
11185 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
11187 corresponding ResourceSource string was not also present in a resource
11188 descriptor declaration. This restriction caused problems with existing
11189 AML/ASL code that includes the Index byte without the string. When such
11191 was disassembled, it could not be compiled without modification. Further,
11192 the modified code created a resource template with a different size than
11194 original, breaking code that used fixed offsets into the resource
11198 Removed a recent feature of the disassembler to ignore a lone
11200 byte. This byte is now emitted if present so that the exact AML can be
11201 reproduced when the disassembled code is recompiled.
11203 Improved comments and text alignment for the resource descriptor code
11204 emitted by the disassembler.
11206 Implemented disassembler support for the ACPI 3.0 AccessSize field within
11208 Register() resource descriptor.
11210 ----------------------------------------
11211 30 September 2005. Summary of changes for version 20050930:
11213 1) ACPI CA Core Subsystem:
11215 Completed a major overhaul of the Resource Manager code - specifically,
11216 optimizations in the area of the AML/internal resource conversion code.
11218 code has been optimized to simplify and eliminate duplicated code, CPU
11220 use has been decreased by optimizing function parameters and local
11221 variables, and naming conventions across the manager have been
11223 for clarity and ease of maintenance (this includes function, parameter,
11224 variable, and struct/typedef names.) The update may force changes in some
11225 driver code, depending on how resources are handled by the host OS.
11227 All Resource Manager dispatch and information tables have been moved to a
11228 single location for clarity and ease of maintenance. One new file was
11229 created, named "rsinfo.c".
11231 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
11232 guarantee that the argument is not evaluated twice, making them less
11234 to macro side-effects. However, since there exists the possibility of
11235 additional stack use if a particular compiler cannot optimize them (such
11237 in the debug generation case), the original macros are optionally
11239 Note that some invocations of the return_VALUE macro may now cause size
11240 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
11242 eliminate these. (From Randy Dunlap)
11244 Implemented a new mechanism to enable debug tracing for individual
11246 methods. A new external interface, AcpiDebugTrace, is provided to enable
11247 this mechanism. The intent is to allow the host OS to easily enable and
11248 disable tracing for problematic control methods. This interface can be
11249 easily exposed to a user or debugger interface if desired. See the file
11250 psxface.c for details.
11252 AcpiUtCallocate will now return a valid pointer if a length of zero is
11253 specified - a length of one is used and a warning is issued. This matches
11254 the behavior of AcpiUtAllocate.
11256 Code and Data Size: The current and previous library sizes for the core
11257 subsystem are shown below. These are the code and data sizes for the
11258 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11260 values do not include any ACPI driver or OSPM code. The debug version of
11262 code includes the debug output trace mechanism and has a much larger code
11263 and data size. Note that these values will vary depending on the
11265 of the compiler and the compiler options used during generation.
11268 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11269 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11271 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11272 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11275 2) iASL Compiler/Disassembler:
11277 A remark is issued if the effective compile-time length of a package or
11278 buffer is zero. Previously, this was a warning.
11280 ----------------------------------------
11281 16 September 2005. Summary of changes for version 20050916:
11283 1) ACPI CA Core Subsystem:
11285 Fixed a problem within the Resource Manager where support for the Generic
11286 Register descriptor was not fully implemented. This descriptor is now
11288 recognized, parsed, disassembled, and displayed.
11290 Completely restructured the Resource Manager code to utilize table-driven
11291 dispatch and lookup, eliminating many of the large switch() statements.
11293 reduces overall subsystem code size and code complexity. Affects the
11294 resource parsing and construction, disassembly, and debug dump output.
11296 Cleaned up and restructured the debug dump output for all resource
11297 descriptors. Improved readability of the output and reduced code size.
11299 Fixed a problem where changes to internal data structures caused the
11300 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
11302 Code and Data Size: The current and previous library sizes for the core
11303 subsystem are shown below. These are the code and data sizes for the
11304 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11306 values do not include any ACPI driver or OSPM code. The debug version of
11308 code includes the debug output trace mechanism and has a much larger code
11309 and data size. Note that these values will vary depending on the
11311 of the compiler and the compiler options used during generation.
11314 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11315 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11317 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11318 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11321 2) iASL Compiler/Disassembler:
11323 Updated the disassembler to automatically insert an EndDependentFn()
11325 into the ASL stream if this macro is missing in the original AML code,
11326 simplifying compilation of the resulting ASL module.
11328 Fixed a problem in the disassembler where a disassembled ResourceSource
11329 string (within a large resource descriptor) was not surrounded by quotes
11331 not followed by a comma, causing errors when the resulting ASL module was
11332 compiled. Also, escape sequences within a ResourceSource string are now
11333 handled correctly (especially "\\")
11335 ----------------------------------------
11336 02 September 2005. Summary of changes for version 20050902:
11338 1) ACPI CA Core Subsystem:
11340 Fixed a problem with the internal Owner ID allocation and deallocation
11341 mechanisms for control method execution and recursive method invocation.
11342 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
11343 messages seen on some systems. Recursive method invocation depth is
11344 currently limited to 255. (Alexey Starikovskiy)
11346 Completely eliminated all vestiges of support for the "module-level
11347 executable code" until this support is fully implemented and debugged.
11349 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
11350 some systems that invoke this support.
11352 Fixed a problem within the resource manager code where the transaction
11354 for a 64-bit address descriptor were handled incorrectly in the type-
11355 specific flag byte.
11357 Consolidated duplicate code within the address descriptor resource
11359 code, reducing overall subsystem code size.
11361 Fixed a fault when using the AML debugger "disassemble" command to
11362 disassemble individual control methods.
11364 Removed references to the "release_current" directory within the Unix
11367 Code and Data Size: The current and previous core subsystem library sizes
11368 are shown below. These are the code and data sizes for the acpica.lib
11369 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
11370 include any ACPI driver or OSPM code. The debug version of the code
11372 the debug output trace mechanism and has a much larger code and data
11374 Note that these values will vary depending on the efficiency of the
11376 and the compiler options used during generation.
11379 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11380 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11382 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11383 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11386 2) iASL Compiler/Disassembler:
11388 Implemented an error check for illegal duplicate values in the interrupt
11390 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
11393 Implemented error checking for the Irq() and IrqNoFlags() macros to
11395 too many values in the interrupt list (16 max) and invalid values in the
11396 list (range 0 - 15)
11398 The maximum length string literal within an ASL file is now restricted to
11399 200 characters as per the ACPI specification.
11401 Fixed a fault when using the -ln option (generate namespace listing).
11403 Implemented an error check to determine if a DescriptorName within a
11404 resource descriptor has already been used within the current scope.
11406 ----------------------------------------
11407 15 August 2005. Summary of changes for version 20050815:
11409 1) ACPI CA Core Subsystem:
11411 Implemented a full bytewise compare to determine if a table load request
11413 attempting to load a duplicate table. The compare is performed if the
11415 signatures and table lengths match. This will allow different tables with
11416 the same OEM Table ID and revision to be loaded - probably against the
11418 specification, but discovered in the field nonetheless.
11420 Added the changes.txt logfile to each of the zipped release packages.
11422 Code and Data Size: Current and previous core subsystem library sizes are
11423 shown below. These are the code and data sizes for the acpica.lib
11425 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11426 any ACPI driver or OSPM code. The debug version of the code includes the
11427 debug output trace mechanism and has a much larger code and data size.
11429 that these values will vary depending on the efficiency of the compiler
11431 the compiler options used during generation.
11434 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11435 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11437 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11438 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11441 2) iASL Compiler/Disassembler:
11443 Fixed a problem where incorrect AML code could be generated for Package
11444 objects if optimization is disabled (via the -oa switch).
11446 Fixed a problem with where incorrect AML code is generated for variable-
11447 length packages when the package length is not specified and the number
11449 initializer values is greater than 255.
11452 ----------------------------------------
11453 29 July 2005. Summary of changes for version 20050729:
11455 1) ACPI CA Core Subsystem:
11457 Implemented support to ignore an attempt to install/load a particular
11459 table more than once. Apparently there exists BIOS code that repeatedly
11460 attempts to load the same SSDT upon certain events. With assistance from
11461 Venkatesh Pallipadi.
11463 Restructured the main interface to the AML parser in order to correctly
11464 handle all exceptional conditions. This will prevent leakage of the
11466 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11468 machines. With assistance from Alexey Starikovskiy.
11470 Support for "module level code" has been disabled in this version due to
11472 number of issues that have appeared on various machines. The support can
11474 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11475 compilation. When the issues are fully resolved, the code will be enabled
11479 Modified the internal functions for debug print support to define the
11480 FunctionName parameter as a (const char *) for compatibility with
11482 built-in macros such as __FUNCTION__, etc.
11484 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11486 Implemented support to display an object count summary for the AML
11488 commands Object and Methods.
11490 Code and Data Size: Current and previous core subsystem library sizes are
11491 shown below. These are the code and data sizes for the acpica.lib
11493 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11494 any ACPI driver or OSPM code. The debug version of the code includes the
11495 debug output trace mechanism and has a much larger code and data size.
11497 that these values will vary depending on the efficiency of the compiler
11499 the compiler options used during generation.
11502 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11503 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11505 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11506 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11509 2) iASL Compiler/Disassembler:
11511 Fixed a regression that appeared in the 20050708 version of the compiler
11512 where an error message was inadvertently emitted for invocations of the
11514 reserved control method.
11516 ----------------------------------------
11517 08 July 2005. Summary of changes for version 20050708:
11519 1) ACPI CA Core Subsystem:
11521 The use of the CPU stack in the debug version of the subsystem has been
11522 considerably reduced. Previously, a debug structure was declared in every
11523 function that used the debug macros. This structure has been removed in
11524 favor of declaring the individual elements as parameters to the debug
11525 functions. This reduces the cumulative stack use during nested execution
11527 ACPI function calls at the cost of a small increase in the code size of
11529 debug version of the subsystem. With assistance from Alexey Starikovskiy
11533 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11534 headers to define a macro that will return the current function name at
11535 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11537 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11538 compiler-dependent header, the function name is saved on the CPU stack
11540 pointer per function.) This mechanism is used because apparently there
11541 exists no standard ANSI-C defined macro that that returns the function
11544 Redesigned and reimplemented the "Owner ID" mechanism used to track
11545 namespace objects created/deleted by ACPI tables and control method
11546 execution. A bitmap is now used to allocate and free the IDs, thus
11548 the wraparound problem present in the previous implementation. The size
11550 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11553 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11555 flag definitions within the headers for the predefined ACPI tables. These
11556 have been replaced by UINT8_BIT in order to increase the code portability
11558 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11559 eliminate bitfields entirely because of a lack of portability.
11561 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11563 is a frequently used function and this improvement increases the
11565 of the entire subsystem (Alexey Starikovskiy).
11567 Fixed several possible memory leaks and the inverse - premature object
11568 deletion (Alexey Starikovskiy).
11570 Code and Data Size: Current and previous core subsystem library sizes are
11571 shown below. These are the code and data sizes for the acpica.lib
11573 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11574 any ACPI driver or OSPM code. The debug version of the code includes the
11575 debug output trace mechanism and has a much larger code and data size.
11577 that these values will vary depending on the efficiency of the compiler
11579 the compiler options used during generation.
11582 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11583 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11585 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11586 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11588 ----------------------------------------
11589 24 June 2005. Summary of changes for version 20050624:
11591 1) ACPI CA Core Subsystem:
11593 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11594 the host-defined cache object. This allows the OSL implementation to
11596 and type this object in any manner desired, simplifying the OSL
11597 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11598 Linux, and should be defined in the OS-specific header file for other
11599 operating systems as required.
11601 Changed the interface to AcpiOsAcquireObject to directly return the
11602 requested object as the function return (instead of ACPI_STATUS.) This
11603 change was made for performance reasons, since this is the purpose of the
11604 interface in the first place. AcpiOsAcquireObject is now similar to the
11605 AcpiOsAllocate interface.
11607 Implemented a new AML debugger command named Businfo. This command
11609 information about all devices that have an associate _PRT object. The
11611 _HID, _UID, and _CID are displayed for these devices.
11613 Modified the initialization sequence in AcpiInitializeSubsystem to call
11615 OSL interface AcpiOslInitialize first, before any local initialization.
11617 change was required because the global initialization now calls OSL
11620 Enhanced the Dump command to display the entire contents of Package
11622 (including all sub-objects and their values.)
11624 Restructured the code base to split some files because of size and/or
11625 because the code logically belonged in a separate file. New files are
11627 below. All makefiles and project files included in the ACPI CA release
11630 utilities/utcache.c /* Local cache interfaces */
11631 utilities/utmutex.c /* Local mutex support */
11632 utilities/utstate.c /* State object support */
11633 interpreter/parser/psloop.c /* Main AML parse loop */
11635 Code and Data Size: Current and previous core subsystem library sizes are
11636 shown below. These are the code and data sizes for the acpica.lib
11638 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11639 any ACPI driver or OSPM code. The debug version of the code includes the
11640 debug output trace mechanism and has a much larger code and data size.
11642 that these values will vary depending on the efficiency of the compiler
11644 the compiler options used during generation.
11647 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11648 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11650 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11651 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11654 2) iASL Compiler/Disassembler:
11656 Fixed a regression introduced in version 20050513 where the use of a
11658 object within a Case() statement caused a compile time exception. The
11659 original behavior has been restored (a Match() operator is emitted.)
11661 ----------------------------------------
11662 17 June 2005. Summary of changes for version 20050617:
11664 1) ACPI CA Core Subsystem:
11666 Moved the object cache operations into the OS interface layer (OSL) to
11668 the host OS to handle these operations if desired (for example, the Linux
11669 OSL will invoke the slab allocator). This support is optional; the
11671 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11673 code in the ACPI CA core. The new OSL interfaces are shown below. See
11674 utalloc.c for an example implementation, and acpiosxf.h for the exact
11675 interface definitions. With assistance from Alexey Starikovskiy.
11679 AcpiOsAcquireObject
11680 AcpiOsReleaseObject
11682 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11684 and restore a flags parameter. This fits better with many OS lock models.
11685 Note: the current execution state (interrupt handler or not) is no longer
11686 passed to these interfaces. If necessary, the OSL must determine this
11688 by itself, a simple and fast operation. With assistance from Alexey
11691 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11692 present if the revision of the RSDP was 2 or greater. According to the
11694 specification, the XSDT is optional in all cases, and the table manager
11695 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11696 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11700 Fixed an interpreter problem with the Mid() operator in the case of an
11702 string where the resulting output string is of zero length. It now
11704 returns a valid, null terminated string object instead of a string object
11705 with a null pointer.
11707 Fixed a problem with the control method argument handling to allow a
11709 to an Arg object that already contains an object of type Device. The
11711 object is now correctly overwritten. Previously, an error was returned.
11714 Enhanced the debugger Find command to emit object values in addition to
11716 found object pathnames. The output format is the same as the dump
11720 Enhanced the debugger Set command. It now has the ability to set the
11722 of any Named integer object in the namespace (Previously, only method
11724 and args could be set.)
11726 Code and Data Size: Current and previous core subsystem library sizes are
11727 shown below. These are the code and data sizes for the acpica.lib
11729 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11730 any ACPI driver or OSPM code. The debug version of the code includes the
11731 debug output trace mechanism and has a much larger code and data size.
11733 that these values will vary depending on the efficiency of the compiler
11735 the compiler options used during generation.
11738 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11739 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11741 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11742 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11745 2) iASL Compiler/Disassembler:
11747 Fixed a regression in the disassembler where if/else/while constructs
11749 output incorrectly. This problem was introduced in the previous release
11750 (20050526). This problem also affected the single-step disassembly in the
11753 Fixed a problem where compiling the reserved _OSI method would randomly
11755 rarely) produce compile errors.
11757 Enhanced the disassembler to emit compilable code in the face of
11759 AML resource descriptors. If the optional ResourceSourceIndex is present,
11760 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11761 disassembly. Otherwise, the resulting code cannot be compiled without
11764 ----------------------------------------
11765 26 May 2005. Summary of changes for version 20050526:
11767 1) ACPI CA Core Subsystem:
11769 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11770 the module level (not within a control method.) These opcodes are
11772 exactly once at the time the table is loaded. This type of code was legal
11774 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11776 order to provide backwards compatibility with earlier BIOS
11778 This eliminates the "Encountered executable code at module level" warning
11779 that was previously generated upon detection of such code.
11781 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11782 inadvertently be generated during the lookup of namespace objects in the
11783 second pass parse of ACPI tables and control methods. It appears that
11785 problem could occur during the resolution of forward references to
11789 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11790 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11791 allows the deadlock detection debug code to be compiled out in the normal
11792 case, improving mutex performance (and overall subsystem performance)
11795 Implemented a handful of miscellaneous fixes for possible memory leaks on
11796 error conditions and error handling control paths. These fixes were
11797 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11799 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11801 to prevent a fault in this error case.
11803 Code and Data Size: Current and previous core subsystem library sizes are
11804 shown below. These are the code and data sizes for the acpica.lib
11806 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11807 any ACPI driver or OSPM code. The debug version of the code includes the
11808 debug output trace mechanism and has a much larger code and data size.
11810 that these values will vary depending on the efficiency of the compiler
11812 the compiler options used during generation.
11815 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11816 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11818 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11819 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11822 2) iASL Compiler/Disassembler:
11824 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11825 the module level (not within a control method.) These operators will be
11826 executed once at the time the table is loaded. This type of code was
11828 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11829 compiler in order to provide backwards compatibility with earlier BIOS
11833 The ACPI integer width (specified via the table revision ID or the -r
11834 override, 32 or 64 bits) is now used internally during compile-time
11836 folding to ensure that constants are truncated to 32 bits if necessary.
11837 Previously, the revision ID value was only emitted in the AML table
11840 An error message is now generated for the Mutex and Method operators if
11842 SyncLevel parameter is outside the legal range of 0 through 15.
11844 Fixed a problem with the Method operator ParameterTypes list handling
11846 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11848 The actual underlying implementation of method argument typechecking is
11849 still under development, however.
11851 ----------------------------------------
11852 13 May 2005. Summary of changes for version 20050513:
11854 1) ACPI CA Core Subsystem:
11856 Implemented support for PCI Express root bridges -- added support for
11858 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11860 The interpreter now automatically truncates incoming 64-bit constants to
11862 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11864 also affects the iASL compiler constant folding. (Note: as per below, the
11865 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11867 Fixed a problem where string and buffer objects with "static" pointers
11868 (pointers to initialization data within an ACPI table) were not handled
11869 consistently. The internal object copy operation now always copies the
11871 to a newly allocated buffer, regardless of whether the source object is
11874 Fixed a problem with the FromBCD operator where an implicit result
11875 conversion was improperly performed while storing the result to the
11877 operand. Since this is an "explicit conversion" operator, the implicit
11878 conversion should never be performed on the output.
11880 Fixed a problem with the CopyObject operator where a copy to an existing
11881 named object did not always completely overwrite the existing object
11883 at name. Specifically, a buffer-to-buffer copy did not delete the
11887 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11889 structs for consistency.
11891 Code and Data Size: Current and previous core subsystem library sizes are
11892 shown below. These are the code and data sizes for the acpica.lib
11894 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11895 any ACPI driver or OSPM code. The debug version of the code includes the
11896 debug output trace mechanism and has a much larger code and data size.
11898 that these values will vary depending on the efficiency of the compiler
11900 the compiler options used during generation.
11903 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11904 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11905 Current Release: (Same sizes)
11906 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11907 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11910 2) iASL Compiler/Disassembler:
11912 The compiler now emits a warning if an attempt is made to generate a 64-
11914 integer constant from within a 32-bit ACPI table (Revision < 2). The
11916 is truncated to 32 bits.
11918 Fixed a problem with large package objects: if the static length of the
11919 package is greater than 255, the "variable length package" opcode is
11920 emitted. Previously, this caused an error. This requires an update to the
11921 ACPI spec, since it currently (incorrectly) states that packages larger
11923 255 elements are not allowed.
11925 The disassembler now correctly handles variable length packages and
11927 larger than 255 elements.
11929 ----------------------------------------
11930 08 April 2005. Summary of changes for version 20050408:
11932 1) ACPI CA Core Subsystem:
11934 Fixed three cases in the interpreter where an "index" argument to an ASL
11935 function was still (internally) 32 bits instead of the required 64 bits.
11936 This was the Index argument to the Index, Mid, and Match operators.
11938 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11940 not a POSIX-defined function and not present in most kernel-level C
11941 libraries. All references to the C library strupr function have been
11945 Completed the deployment of static functions/prototypes. All prototypes
11947 the static attribute have been moved from the headers to the owning C
11950 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11951 utility). This option allows the utility to extract individual ACPI
11953 from the output of AcpiDmp. It provides the same functionality of the
11954 acpixtract.pl perl script without the worry of setting the correct perl
11955 options. AcpiBin runs on Windows and has not yet been generated/validated
11957 the Linux/Unix environment (but should be soon).
11959 Updated and fixed the table dump option for AcpiBin (-d). This option
11960 converts a single ACPI table to a hex/ascii file, similar to the output
11964 Code and Data Size: Current and previous core subsystem library sizes are
11965 shown below. These are the code and data sizes for the acpica.lib
11967 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11968 any ACPI driver or OSPM code. The debug version of the code includes the
11969 debug output trace mechanism and has a much larger code and data size.
11971 that these values will vary depending on the efficiency of the compiler
11973 the compiler options used during generation.
11976 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11977 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11979 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11980 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11983 2) iASL Compiler/Disassembler:
11985 Disassembler fix: Added a check to ensure that the table length found in
11987 ACPI table header within the input file is not longer than the actual
11989 file size. This indicates some kind of file or table corruption.
11991 ----------------------------------------
11992 29 March 2005. Summary of changes for version 20050329:
11994 1) ACPI CA Core Subsystem:
11996 An error is now generated if an attempt is made to create a Buffer Field
11998 length zero (A CreateField with a length operand of zero.)
12000 The interpreter now issues a warning whenever executable code at the
12002 level is detected during ACPI table load. This will give some idea of the
12003 prevalence of this type of code.
12005 Implemented support for references to named objects (other than control
12006 methods) within package objects.
12008 Enhanced package object output for the debug object. Package objects are
12010 completely dumped, showing all elements.
12012 Enhanced miscellaneous object output for the debug object. Any object can
12013 now be written to the debug object (for example, a device object can be
12014 written, and the type of the object will be displayed.)
12016 The "static" qualifier has been added to all local functions across both
12018 core subsystem and the iASL compiler.
12020 The number of "long" lines (> 80 chars) within the source has been
12021 significantly reduced, by about 1/3.
12023 Cleaned up all header files to ensure that all CA/iASL functions are
12024 prototyped (even static functions) and the formatting is consistent.
12026 Two new header files have been added, acopcode.h and acnames.h.
12028 Removed several obsolete functions that were no longer used.
12030 Code and Data Size: Current and previous core subsystem library sizes are
12031 shown below. These are the code and data sizes for the acpica.lib
12033 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12034 any ACPI driver or OSPM code. The debug version of the code includes the
12035 debug output trace mechanism and has a much larger code and data size.
12037 that these values will vary depending on the efficiency of the compiler
12039 the compiler options used during generation.
12042 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12043 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12045 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
12046 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
12050 2) iASL Compiler/Disassembler:
12052 Fixed a problem with the resource descriptor generation/support. For the
12053 ResourceSourceIndex and the ResourceSource fields, both must be present,
12055 both must be not present - can't have one without the other.
12057 The compiler now returns non-zero from the main procedure if any errors
12059 occurred during the compilation.
12062 ----------------------------------------
12063 09 March 2005. Summary of changes for version 20050309:
12065 1) ACPI CA Core Subsystem:
12067 The string-to-buffer implicit conversion code has been modified again
12069 a change to the ACPI specification. In order to match the behavior of
12071 other major ACPI implementation, the target buffer is no longer truncated
12073 the source string is smaller than an existing target buffer. This change
12074 requires an update to the ACPI spec, and should eliminate the recent
12075 AE_AML_BUFFER_LIMIT issues.
12077 The "implicit return" support was rewritten to a new algorithm that
12079 the general case. Rather than attempt to determine when a method is about
12081 exit, the result of every ASL operator is saved momentarily until the
12083 next ASL operator is executed. Therefore, no matter how the method exits,
12084 there will always be a saved implicit return value. This feature is only
12085 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
12087 AE_AML_NO_RETURN_VALUE errors when enabled.
12089 Implemented implicit conversion support for the predicate (operand) of
12091 If, Else, and While operators. String and Buffer arguments are
12093 converted to Integers.
12095 Changed the string-to-integer conversion behavior to match the new ACPI
12096 errata: "If no integer object exists, a new integer is created. The ASCII
12097 string is interpreted as a hexadecimal constant. Each string character is
12098 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
12099 with the first character as the most significant digit, and ending with
12101 first non-hexadecimal character or end-of-string." This means that the
12103 non-hex character terminates the conversion and this is the code that was
12106 Fixed a problem where the ObjectType operator would fail (fault) when
12108 on an Index of a Package which pointed to a null package element. The
12109 operator now properly returns zero (Uninitialized) in this case.
12111 Fixed a problem where the While operator used excessive memory by not
12112 properly popping the result stack during execution. There was no memory
12114 after execution, however. (Code provided by Valery Podrezov.)
12116 Fixed a problem where references to control methods within Package
12118 caused the method to be invoked, instead of producing a reference object
12119 pointing to the method.
12121 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
12123 improve performance and reduce code size. (Code provided by Alexey
12126 Code and Data Size: Current and previous core subsystem library sizes are
12127 shown below. These are the code and data sizes for the acpica.lib
12129 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12130 any ACPI driver or OSPM code. The debug version of the code includes the
12131 debug output trace mechanism and has a much larger code and data size.
12133 that these values will vary depending on the efficiency of the compiler
12135 the compiler options used during generation.
12138 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12139 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12141 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12142 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
12145 2) iASL Compiler/Disassembler:
12147 Fixed a problem with the Return operator with no arguments. Since the AML
12148 grammar for the byte encoding requires an operand for the Return opcode,
12150 compiler now emits a Return(Zero) for this case. An ACPI specification
12151 update has been written for this case.
12153 For tables other than the DSDT, namepath optimization is automatically
12154 disabled. This is because SSDTs can be loaded anywhere in the namespace,
12156 compiler has no knowledge of where, and thus cannot optimize namepaths.
12158 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
12159 inadvertently omitted from the ACPI specification, and will require an
12160 update to the spec.
12162 The source file scan for ASCII characters is now optional (-a). This
12164 was made because some vendors place non-ascii characters within comments.
12165 However, the scan is simply a brute-force byte compare to ensure all
12166 characters in the file are in the range 0x00 to 0x7F.
12168 Fixed a problem with the CondRefOf operator where the compiler was
12169 inappropriately checking for the existence of the target. Since the point
12171 the operator is to check for the existence of the target at run-time, the
12172 compiler no longer checks for the target existence.
12174 Fixed a problem where errors generated from the internal AML interpreter
12175 during constant folding were not handled properly, causing a fault.
12177 Fixed a problem with overly aggressive range checking for the Stall
12178 operator. The valid range (max 255) is now only checked if the operand is
12180 type Integer. All other operand types cannot be statically checked.
12182 Fixed a problem where control method references within the RefOf,
12184 and ObjectType operators were not treated properly. They are now treated
12186 actual references, not method invocations.
12188 Fixed and enhanced the "list namespace" option (-ln). This option was
12190 a number of releases ago.
12192 Improved error handling for the Field, IndexField, and BankField
12194 The compiler now cleanly reports and recovers from errors in the field
12195 component (FieldUnit) list.
12197 Fixed a disassembler problem where the optional ResourceDescriptor fields
12198 TRS and TTP were not always handled correctly.
12200 Disassembler - Comments in output now use "//" instead of "/*"
12202 ----------------------------------------
12203 28 February 2005. Summary of changes for version 20050228:
12205 1) ACPI CA Core Subsystem:
12207 Fixed a problem where the result of an Index() operator (an object
12208 reference) must increment the reference count on the target object for
12210 life of the object reference.
12212 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
12213 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
12215 resource descriptors.
12217 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
12218 Space Descriptor" string, indicating interpreter support for the
12222 Implemented header support for the new ACPI 3.0 FADT flag bits.
12224 Implemented header support for the new ACPI 3.0 PCI Express bits for the
12226 status/enable registers.
12228 Updated header support for the MADT processor local Apic struct and MADT
12229 platform interrupt source struct for new ACPI 3.0 fields.
12231 Implemented header support for the SRAT and SLIT ACPI tables.
12233 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
12237 Code and Data Size: Current and previous core subsystem library sizes are
12238 shown below. These are the code and data sizes for the acpica.lib
12240 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12241 any ACPI driver or OSPM code. The debug version of the code includes the
12242 debug output trace mechanism and has a much larger code and data size.
12244 that these values will vary depending on the efficiency of the compiler
12246 the compiler options used during generation.
12249 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12250 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12252 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12253 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12256 2) iASL Compiler/Disassembler:
12258 Fixed a problem with the internal 64-bit String-to-integer conversion
12260 strings less than two characters long.
12262 Fixed a problem with constant folding where the result of the Index()
12263 operator can not be considered a constant. This means that Index() cannot
12265 a type3 opcode and this will require an update to the ACPI specification.
12267 Disassembler: Implemented support for the TTP, MTP, and TRS resource
12268 descriptor fields. These fields were inadvertently ignored and not output
12270 the disassembly of the resource descriptor.
12273 ----------------------------------------
12274 11 February 2005. Summary of changes for version 20050211:
12276 1) ACPI CA Core Subsystem:
12278 Implemented ACPI 3.0 support for implicit conversion within the Match()
12279 operator. MatchObjects can now be of type integer, buffer, or string
12281 of just type integer. Package elements are implicitly converted to the
12283 of the MatchObject. This change aligns the behavior of Match() with the
12284 behavior of the other logical operators (LLess(), etc.) It also requires
12286 errata change to the ACPI specification as this support was intended for
12287 ACPI 3.0, but was inadvertently omitted.
12289 Fixed a problem with the internal implicit "to buffer" conversion.
12291 that are converted to buffers will cause buffer truncation if the string
12293 smaller than the target buffer. Integers that are converted to buffers
12295 not cause buffer truncation, only zero extension (both as per the ACPI
12296 spec.) The problem was introduced when code was added to truncate the
12297 buffer, but this should not be performed in all cases, only the string
12300 Fixed a problem with the Buffer and Package operators where the
12302 would get confused if two such operators were used as operands to an ASL
12303 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
12304 stack was not being popped after the execution of these operators,
12306 in an AE_NO_RETURN_VALUE exception.
12308 Fixed a problem with constructs of the form Store(Index(...),...). The
12309 reference object returned from Index was inadvertently resolved to an
12311 value. This problem was introduced in version 20050114 when the behavior
12313 Store() was modified to restrict the object types that can be used as the
12314 source operand (to match the ACPI specification.)
12316 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
12318 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
12320 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
12322 Code and Data Size: Current and previous core subsystem library sizes are
12323 shown below. These are the code and data sizes for the acpica.lib
12325 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12326 any ACPI driver or OSPM code. The debug version of the code includes the
12327 debug output trace mechanism and has a much larger code and data size.
12329 that these values will vary depending on the efficiency of the compiler
12331 the compiler options used during generation.
12334 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12335 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12337 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12338 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12341 2) iASL Compiler/Disassembler:
12343 Fixed a code generation problem in the constant folding optimization code
12344 where incorrect code was generated if a constant was reduced to a buffer
12345 object (i.e., a reduced type 5 opcode.)
12347 Fixed a typechecking problem for the ToBuffer operator. Caused by an
12348 incorrect return type in the internal opcode information table.
12350 ----------------------------------------
12351 25 January 2005. Summary of changes for version 20050125:
12353 1) ACPI CA Core Subsystem:
12355 Fixed a recently introduced problem with the Global Lock where the
12356 underlying semaphore was not created. This problem was introduced in
12357 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
12358 Acquire() operation on _GL.
12360 The local object cache is now optional, and is disabled by default. Both
12361 AcpiExec and the iASL compiler enable the cache because they run in user
12362 mode and this enhances their performance. #define
12363 ACPI_ENABLE_OBJECT_CACHE
12364 to enable the local cache.
12366 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
12368 optional "implicit return" support where an error was returned if no
12370 object was expected, but one was implicitly returned. AE_OK is now
12372 in this case and the implicitly returned object is deleted.
12373 AcpiUtEvaluateObject is only occasionally used, and only to execute
12375 methods such as _STA and _INI where the return type is known up front.
12377 Fixed a few issues with the internal convert-to-integer code. It now
12379 an error if an attempt is made to convert a null string, a string of only
12380 blanks/tabs, or a zero-length buffer. This affects both implicit
12382 and explicit conversion via the ToInteger() operator.
12384 The internal debug code in AcpiUtAcquireMutex has been commented out. It
12386 not needed for normal operation and should increase the performance of
12388 entire subsystem. The code remains in case it is needed for debug
12392 The AcpiExec source and makefile are included in the Unix/Linux package
12396 Code and Data Size: Current and previous core subsystem library sizes are
12397 shown below. These are the code and data sizes for the acpica.lib
12399 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12400 any ACPI driver or OSPM code. The debug version of the code includes the
12401 debug output trace mechanism and has a much larger code and data size.
12403 that these values will vary depending on the efficiency of the compiler
12405 the compiler options used during generation.
12408 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12409 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12411 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12412 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12414 2) iASL Compiler/Disassembler:
12416 Switch/Case support: A warning is now issued if the type of the Switch
12418 cannot be determined at compile time. For example, Switch(Arg0) will
12419 generate the warning, and the type is assumed to be an integer. As per
12421 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
12425 Switch/Case support: Implemented support for buffer and string objects as
12426 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
12427 buffers and strings.
12429 Switch/Case support: The emitted code for the LEqual() comparisons now
12431 the switch value as the first operand, not the second. The case value is
12433 the second operand, and this allows the case value to be implicitly
12434 converted to the type of the switch value, not the other way around.
12436 Switch/Case support: Temporary variables are now emitted immediately
12438 the control method, not at the global level. This means that there are
12440 36 temps available per-method, not 36 temps per-module as was the case
12442 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
12444 ----------------------------------------
12445 14 January 2005. Summary of changes for version 20050114:
12447 Added 2005 copyright to all module headers. This affects every module in
12448 the core subsystem, iASL compiler, and the utilities.
12450 1) ACPI CA Core Subsystem:
12452 Fixed an issue with the String-to-Buffer conversion code where the string
12453 null terminator was not included in the buffer after conversion, but
12455 is existing ASL that assumes the string null terminator is included. This
12457 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12458 introduced in the previous version when the code was updated to correctly
12459 set the converted buffer size as per the ACPI specification. The ACPI
12461 is ambiguous and will be updated to specify that the null terminator must
12463 included in the converted buffer. This also affects the ToBuffer() ASL
12466 Fixed a problem with the Mid() ASL/AML operator where it did not work
12467 correctly on Buffer objects. Newly created sub-buffers were not being
12472 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12473 performed on the OemId and OemTableId table header fields. These fields
12475 not null terminated, so strncmp is now used instead of strcmp.
12477 Implemented a restriction on the Store() ASL/AML operator to align the
12478 behavior with the ACPI specification. Previously, any object could be
12480 as the source operand. Now, the only objects that may be used are
12482 Buffers, Strings, Packages, Object References, and DDB Handles. If
12483 necessary, the original behavior can be restored by enabling the
12484 EnableInterpreterSlack flag.
12486 Enhanced the optional "implicit return" support to allow an implicit
12488 value from methods that are invoked externally via the AcpiEvaluateObject
12489 interface. This enables implicit returns from the _STA and _INI methods,
12492 Changed the Revision() ASL/AML operator to return the current version of
12494 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12496 the supported ACPI version (This is the function of the _REV method).
12498 Updated the _REV predefined method to return the currently supported
12502 Implemented batch mode option for the AcpiExec utility (-b).
12504 Code and Data Size: Current and previous core subsystem library sizes are
12505 shown below. These are the code and data sizes for the acpica.lib
12507 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12508 any ACPI driver or OSPM code. The debug version of the code includes the
12509 debug output trace mechanism and has a much larger code and data size.
12511 that these values will vary depending on the efficiency of the compiler
12513 the compiler options used during generation.
12516 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12517 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12519 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12520 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12522 ----------------------------------------
12523 10 December 2004. Summary of changes for version 20041210:
12525 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12526 ACPI CA core subsystem.
12528 1) ACPI CA Core Subsystem:
12530 Fixed a problem in the ToDecimalString operator where the resulting
12532 length was incorrectly calculated. The length is now calculated exactly,
12533 eliminating incorrect AE_STRING_LIMIT exceptions.
12535 Fixed a problem in the ToHexString operator to allow a maximum 200
12537 string to be produced.
12539 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12541 routine where the length of the resulting buffer was not truncated to the
12542 new size (if the target buffer already existed).
12544 Code and Data Size: Current and previous core subsystem library sizes are
12545 shown below. These are the code and data sizes for the acpica.lib
12547 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12548 any ACPI driver or OSPM code. The debug version of the code includes the
12549 debug output trace mechanism and has a much larger code and data size.
12551 that these values will vary depending on the efficiency of the compiler
12553 the compiler options used during generation.
12556 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12557 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12559 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12560 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12563 2) iASL Compiler/Disassembler:
12565 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12566 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12567 Includes support in the disassembler.
12569 Implemented support for the new (ACPI 3.0) parameter to the Register
12573 Fixed a problem where the _HE resource name for the Interrupt macro was
12574 referencing bit 0 instead of bit 1.
12576 Implemented check for maximum 255 interrupts in the Interrupt macro.
12578 Fixed a problem with the predefined resource descriptor names where
12579 incorrect AML code was generated if the offset within the resource buffer
12580 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12581 but did not update the surrounding package lengths.
12583 Changes to the Dma macro: All channels within the channel list must be
12585 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12586 optional (default is BusMaster).
12588 Implemented check for maximum 7 data bytes for the VendorShort macro.
12590 The ReadWrite parameter is now optional for the Memory32 and similar
12593 ----------------------------------------
12594 03 December 2004. Summary of changes for version 20041203:
12596 1) ACPI CA Core Subsystem:
12598 The low-level field insertion/extraction code (exfldio) has been
12600 rewritten to eliminate unnecessary complexity, bugs, and boundary
12603 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12605 operators where the input operand could be inadvertently deleted if no
12606 conversion was necessary (e.g., if the input to ToInteger was an Integer
12609 Fixed a problem with the ToDecimalString and ToHexString where an
12611 exception code was returned if the resulting string would be > 200 chars.
12612 AE_STRING_LIMIT is now returned.
12614 Fixed a problem with the Concatenate operator where AE_OK was always
12615 returned, even if the operation failed.
12617 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12618 semaphores to be allocated.
12620 Code and Data Size: Current and previous core subsystem library sizes are
12621 shown below. These are the code and data sizes for the acpica.lib
12623 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12624 any ACPI driver or OSPM code. The debug version of the code includes the
12625 debug output trace mechanism and has a much larger code and data size.
12627 that these values will vary depending on the efficiency of the compiler
12629 the compiler options used during generation.
12632 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12633 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12635 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12636 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12639 2) iASL Compiler/Disassembler:
12641 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12642 recently introduced in 20041119.
12644 Fixed a problem with the ToUUID macro where the upper nybble of each
12646 byte was inadvertently set to zero.
12648 ----------------------------------------
12649 19 November 2004. Summary of changes for version 20041119:
12651 1) ACPI CA Core Subsystem:
12653 Fixed a problem in the internal ConvertToInteger routine where new
12655 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12657 buffers and strings to integers.
12659 Implemented support to store a value to an Index() on a String object.
12661 is an ACPI 2.0 feature that had not yet been implemented.
12663 Implemented new behavior for storing objects to individual package
12665 (via the Index() operator). The previous behavior was to invoke the
12667 conversion rules if an object was already present at the index. The new
12668 behavior is to simply delete any existing object and directly store the
12670 object. Although the ACPI specification seems unclear on this subject,
12672 ACPI implementations behave in this manner. (This is the root of the
12673 AE_BAD_HEX_CONSTANT issue.)
12675 Modified the RSDP memory scan mechanism to support the extended checksum
12677 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12678 RSDP signature is found with a valid checksum.
12680 Code and Data Size: Current and previous core subsystem library sizes are
12681 shown below. These are the code and data sizes for the acpica.lib
12683 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12684 any ACPI driver or OSPM code. The debug version of the code includes the
12685 debug output trace mechanism and has a much larger code and data size.
12687 that these values will vary depending on the efficiency of the compiler
12689 the compiler options used during generation.
12692 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12693 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12695 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12696 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12699 2) iASL Compiler/Disassembler:
12701 Fixed a missing semicolon in the aslcompiler.y file.
12703 ----------------------------------------
12704 05 November 2004. Summary of changes for version 20041105:
12706 1) ACPI CA Core Subsystem:
12708 Implemented support for FADT revision 2. This was an interim table
12710 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12712 Implemented optional support to allow uninitialized LocalX and ArgX
12713 variables in a control method. The variables are initialized to an
12715 object with a value of zero. This support is enabled by setting the
12716 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12718 Implemented support for Integer objects for the SizeOf operator. Either
12720 or 8 is returned, depending on the current integer size (32-bit or 64-
12722 depending on the parent table revision).
12724 Fixed a problem in the implementation of the SizeOf and ObjectType
12726 where the operand was resolved to a value too early, causing incorrect
12727 return values for some objects.
12729 Fixed some possible memory leaks during exceptional conditions.
12731 Code and Data Size: Current and previous core subsystem library sizes are
12732 shown below. These are the code and data sizes for the acpica.lib
12734 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12735 any ACPI driver or OSPM code. The debug version of the code includes the
12736 debug output trace mechanism and has a much larger code and data size.
12738 that these values will vary depending on the efficiency of the compiler
12740 the compiler options used during generation.
12743 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12744 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12746 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12747 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12750 2) iASL Compiler/Disassembler:
12752 Implemented support for all ACPI 3.0 reserved names and methods.
12754 Implemented all ACPI 3.0 grammar elements in the front-end, including
12755 support for semicolons.
12757 Implemented the ACPI 3.0 Function() and ToUUID() macros
12759 Fixed a problem in the disassembler where a Scope() operator would not be
12760 emitted properly if the target of the scope was in another table.
12762 ----------------------------------------
12763 15 October 2004. Summary of changes for version 20041015:
12765 Note: ACPI CA is currently undergoing an in-depth and complete formal
12766 evaluation to test/verify the following areas. Other suggestions are
12767 welcome. This will result in an increase in the frequency of releases and
12768 the number of bug fixes in the next few months.
12769 - Functional tests for all ASL/AML operators
12770 - All implicit/explicit type conversions
12771 - Bit fields and operation regions
12772 - 64-bit math support and 32-bit-only "truncated" math support
12773 - Exceptional conditions, both compiler and interpreter
12774 - Dynamic object deletion and memory leaks
12775 - ACPI 3.0 support when implemented
12776 - External interfaces to the ACPI subsystem
12779 1) ACPI CA Core Subsystem:
12781 Fixed two alignment issues on 64-bit platforms - within debug statements
12783 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12785 field within the non-aligned ACPI generic address structure.
12787 Fixed a problem in the Increment and Decrement operators where incorrect
12788 operand resolution could result in the inadvertent modification of the
12789 original integer when the integer is passed into another method as an
12790 argument and the arg is then incremented/decremented.
12792 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12794 BCD number were truncated during conversion.
12796 Fixed a problem in the ToDecimal operator where the length of the
12798 string could be set incorrectly too long if the input operand was a
12802 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12804 within a buffer would prematurely terminate a compare between buffer
12807 Added a check for string overflow (>200 characters as per the ACPI
12808 specification) during the Concatenate operator with two string operands.
12810 Code and Data Size: Current and previous core subsystem library sizes are
12811 shown below. These are the code and data sizes for the acpica.lib
12813 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12814 any ACPI driver or OSPM code. The debug version of the code includes the
12815 debug output trace mechanism and has a much larger code and data size.
12817 that these values will vary depending on the efficiency of the compiler
12819 the compiler options used during generation.
12822 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12823 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12825 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12826 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12830 2) iASL Compiler/Disassembler:
12832 Allow the use of the ObjectType operator on uninitialized Locals and Args
12833 (returns 0 as per the ACPI specification).
12835 Fixed a problem where the compiler would fault if there was a syntax
12837 in the FieldName of all of the various CreateXXXField operators.
12839 Disallow the use of lower case letters within the EISAID macro, as per
12841 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12843 U is an uppercase letter and N is a hex digit.
12846 ----------------------------------------
12847 06 October 2004. Summary of changes for version 20041006:
12849 1) ACPI CA Core Subsystem:
12851 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12852 implements a 64-bit timer with 100 nanosecond granularity.
12854 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12855 implement the ACPI 3.0 Timer operator. This allows the host OS to
12857 the timer with the best clock available. Also, it keeps the core
12859 out of the clock handling business, since the host OS (usually) performs
12862 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12863 functions use a 64-bit address which is part of the packed ACPI Generic
12864 Address Structure. Since the structure is non-aligned, the alignment
12866 are now used to extract the address to a local variable before use.
12868 Fixed a problem where the ToInteger operator assumed all input strings
12870 hexadecimal. The operator now handles both decimal strings and hex
12872 (prefixed with "0x").
12874 Fixed a problem where the string length in the string object created as a
12875 result of the internal ConvertToString procedure could be incorrect. This
12876 potentially affected all implicit conversions and also the
12878 and ToHexString operators.
12880 Fixed two problems in the ToString operator. If the length parameter was
12881 zero, an incorrect string object was created and the value of the input
12882 length parameter was inadvertently changed from zero to Ones.
12884 Fixed a problem where the optional ResourceSource string in the
12886 resource macro was ignored.
12888 Simplified the interfaces to the internal division functions, reducing
12890 size and complexity.
12892 Code and Data Size: Current and previous core subsystem library sizes are
12893 shown below. These are the code and data sizes for the acpica.lib
12895 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12896 any ACPI driver or OSPM code. The debug version of the code includes the
12897 debug output trace mechanism and has a much larger code and data size.
12899 that these values will vary depending on the efficiency of the compiler
12901 the compiler options used during generation.
12904 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12905 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12907 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12908 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12911 2) iASL Compiler/Disassembler:
12913 Implemented support for the ACPI 3.0 Timer operator.
12915 Fixed a problem where the Default() operator was inadvertently ignored in
12917 Switch/Case block. This was a problem in the translation of the Switch
12918 statement to If...Else pairs.
12920 Added support to allow a standalone Return operator, with no parentheses
12924 Fixed a problem with code generation for the ElseIf operator where the
12925 translated Else...If parse tree was improperly constructed leading to the
12928 ----------------------------------------
12929 22 September 2004. Summary of changes for version 20040922:
12931 1) ACPI CA Core Subsystem:
12933 Fixed a problem with the implementation of the LNot() operator where
12935 was not returned for the TRUE case. Changed the code to return Ones
12937 of (!Arg) which was usually 1. This change affects iASL constant folding
12939 this operator also.
12941 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12943 initialized properly -- Now zero the entire buffer in this case where the
12944 buffer already exists.
12946 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12947 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12948 related code considerably. This will require changes/updates to all OS
12949 interface layers (OSLs.)
12951 Implemented a new external interface, AcpiInstallExceptionHandler, to
12953 a system exception handler to be installed. This handler is invoked upon
12955 run-time exception that occurs during control method execution.
12957 Added support for the DSDT in AcpiTbFindTable. This allows the
12958 DataTableRegion() operator to access the local copy of the DSDT.
12960 Code and Data Size: Current and previous core subsystem library sizes are
12961 shown below. These are the code and data sizes for the acpica.lib
12963 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12964 any ACPI driver or OSPM code. The debug version of the code includes the
12965 debug output trace mechanism and has a much larger code and data size.
12967 that these values will vary depending on the efficiency of the compiler
12969 the compiler options used during generation.
12972 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12973 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12975 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12976 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12979 2) iASL Compiler/Disassembler:
12981 Fixed a problem with constant folding and the LNot operator. LNot was
12982 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12984 could result in the generation of an incorrect folded/reduced constant.
12986 End-Of-File is now allowed within a "//"-style comment. A parse error no
12987 longer occurs if such a comment is at the very end of the input ASL
12991 Implemented the "-r" option to override the Revision in the table header.
12992 The initial use of this option will be to simplify the evaluation of the
12994 interpreter by allowing a single ASL source module to be compiled for
12996 32-bit or 64-bit integers.
12999 ----------------------------------------
13000 27 August 2004. Summary of changes for version 20040827:
13002 1) ACPI CA Core Subsystem:
13004 - Implemented support for implicit object conversion in the non-numeric
13005 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
13007 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
13008 the second operand is implicitly converted on the fly to match the type
13010 the first operand. For example:
13012 LEqual (Source1, Source2)
13014 Source1 and Source2 must each evaluate to an integer, a string, or a
13016 The data type of Source1 dictates the required type of Source2. Source2
13018 implicitly converted if necessary to match the type of Source1.
13020 - Updated and corrected the behavior of the string conversion support.
13022 rules concerning conversion of buffers to strings (according to the ACPI
13023 specification) are as follows:
13025 ToDecimalString - explicit byte-wise conversion of buffer to string of
13026 decimal values (0-255) separated by commas. ToHexString - explicit byte-
13028 conversion of buffer to string of hex values (0-FF) separated by commas.
13029 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
13031 copy with no transform except NULL terminated. Any other implicit buffer-
13033 string conversion - byte-wise conversion of buffer to string of hex
13035 (0-FF) separated by spaces.
13037 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
13039 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
13041 one byte too short in the case of a node in the root scope. This could
13042 cause a fault during debug output.
13044 - Code and Data Size: Current and previous core subsystem library sizes
13046 shown below. These are the code and data sizes for the acpica.lib
13048 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13049 any ACPI driver or OSPM code. The debug version of the code includes the
13050 debug output trace mechanism and has a much larger code and data size.
13052 that these values will vary depending on the efficiency of the compiler
13054 the compiler options used during generation.
13057 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
13058 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13060 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
13061 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
13064 2) iASL Compiler/Disassembler:
13066 - Fixed a Linux generation error.
13069 ----------------------------------------
13070 16 August 2004. Summary of changes for version 20040816:
13072 1) ACPI CA Core Subsystem:
13074 Designed and implemented support within the AML interpreter for the so-
13075 called "implicit return". This support returns the result of the last
13077 operation within a control method, in the absence of an explicit Return()
13078 operator. A few machines depend on this behavior, even though it is not
13079 explicitly supported by the ASL language. It is optional support that
13081 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
13083 Removed support for the PCI_Config address space from the internal low
13085 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
13086 support was not used internally, and would not work correctly anyway
13088 the PCI bus number and segment number were not supported. There are
13089 separate interfaces for PCI configuration space access because of the
13093 Code and Data Size: Current and previous core subsystem library sizes are
13094 shown below. These are the code and data sizes for the acpica.lib
13096 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13097 any ACPI driver or OSPM code. The debug version of the code includes the
13098 debug output trace mechanism and has a much larger code and data size.
13100 that these values will vary depending on the efficiency of the compiler
13102 the compiler options used during generation.
13105 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13106 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13108 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
13109 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
13112 2) iASL Compiler/Disassembler:
13114 Fixed a problem where constants in ASL expressions at the root level (not
13115 within a control method) could be inadvertently truncated during code
13116 generation. This problem was introduced in the 20040715 release.
13119 ----------------------------------------
13120 15 July 2004. Summary of changes for version 20040715:
13122 1) ACPI CA Core Subsystem:
13124 Restructured the internal HW GPE interfaces to pass/track the current
13126 of interrupts (enabled/disabled) in order to avoid possible deadlock and
13127 increase flexibility of the interfaces.
13129 Implemented a "lexicographical compare" for String and Buffer objects
13131 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
13133 as per further clarification to the ACPI specification. Behavior is
13135 to C library "strcmp".
13137 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
13138 external function. In the 32-bit non-debug case, the stack use has been
13139 reduced from 168 bytes to 32 bytes.
13141 Deployed a new run-time configuration flag,
13142 AcpiGbl_EnableInterpreterSlack,
13143 whose purpose is to allow the AML interpreter to forgive certain bad AML
13144 constructs. Default setting is FALSE.
13146 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
13148 support code. If enabled, it allows field access to go beyond the end of
13150 region definition if the field is within the region length rounded up to
13152 next access width boundary (a common coding error.)
13154 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
13155 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
13157 symbols are lowercased by the latest version of the AcpiSrc tool.
13159 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
13160 rename "Register" to simply "Reg" to prevent certain compilers from
13163 Code and Data Size: Current and previous core subsystem library sizes are
13164 shown below. These are the code and data sizes for the acpica.lib
13166 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13167 any ACPI driver or OSPM code. The debug version of the code includes the
13168 debug output trace mechanism and has a much larger code and data size.
13170 that these values will vary depending on the efficiency of the compiler
13172 the compiler options used during generation.
13175 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13176 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13178 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
13179 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
13182 2) iASL Compiler/Disassembler:
13184 Implemented full support for Package objects within the Case() operator.
13185 Note: The Break() operator is currently not supported within Case blocks
13186 (TermLists) as there is some question about backward compatibility with
13191 Fixed a problem where complex terms were not supported properly within
13195 Eliminated extraneous warning for compiler-emitted reserved names of the
13196 form "_T_x". (Used in Switch/Case operators.)
13198 Eliminated optimization messages for "_T_x" objects and small constants
13199 within the DefinitionBlock operator.
13202 ----------------------------------------
13203 15 June 2004. Summary of changes for version 20040615:
13205 1) ACPI CA Core Subsystem:
13207 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13209 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13212 All directory names in the entire source package are lower case, as they
13213 were in earlier releases.
13215 Implemented "Disassemble" command in the AML debugger that will
13217 a single control method.
13219 Code and Data Size: Current and previous core subsystem library sizes are
13220 shown below. These are the code and data sizes for the acpica.lib
13222 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13223 any ACPI driver or OSPM code. The debug version of the code includes the
13224 debug output trace mechanism and has a much larger code and data size.
13226 that these values will vary depending on the efficiency of the compiler
13228 the compiler options used during generation.
13231 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13232 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13235 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13236 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13239 2) iASL Compiler/Disassembler:
13241 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13243 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13246 All directory names in the entire source package are lower case, as they
13247 were in earlier releases.
13249 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
13252 Fixed an issue with the Windows version of the compiler where later
13254 of Windows place the FADT in the registry under the name "FADT" and not
13255 "FACP" as earlier versions did. This applies when using the -g or -
13256 d<nofilename> options. The compiler now looks for both strings as
13259 Fixed a problem with compiler namepath optimization where a namepath
13261 the Scope() operator could not be optimized if the namepath was a subpath
13263 the current scope path.
13265 ----------------------------------------
13266 27 May 2004. Summary of changes for version 20040527:
13268 1) ACPI CA Core Subsystem:
13270 Completed a new design and implementation for EBDA (Extended BIOS Data
13272 support in the RSDP scan code. The original code improperly scanned for
13274 EBDA by simply scanning from memory location 0 to 0x400. The correct
13276 is to first obtain the EBDA pointer from within the BIOS data area, then
13277 scan 1K of memory starting at the EBDA pointer. There appear to be few
13279 any machines that place the RSDP in the EBDA, however.
13281 Integrated a fix for a possible fault during evaluation of BufferField
13282 arguments. Obsolete code that was causing the problem was removed.
13284 Found and fixed a problem in the Field Support Code where data could be
13285 corrupted on a bit field read that starts on an aligned boundary but does
13286 not end on an aligned boundary. Merged the read/write "datum length"
13287 calculation code into a common procedure.
13289 Rolled in a couple of changes to the FreeBSD-specific header.
13292 Code and Data Size: Current and previous core subsystem library sizes are
13293 shown below. These are the code and data sizes for the acpica.lib
13295 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13296 any ACPI driver or OSPM code. The debug version of the code includes the
13297 debug output trace mechanism and has a much larger code and data size.
13299 that these values will vary depending on the efficiency of the compiler
13301 the compiler options used during generation.
13304 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13305 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13307 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13308 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13311 2) iASL Compiler/Disassembler:
13313 Fixed a generation warning produced by some overly-verbose compilers for
13317 ----------------------------------------
13318 14 May 2004. Summary of changes for version 20040514:
13320 1) ACPI CA Core Subsystem:
13322 Fixed a problem where hardware GPE enable bits sometimes not set properly
13323 during and after GPE method execution. Result of 04/27 changes.
13325 Removed extra "clear all GPEs" when sleeping/waking.
13327 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
13328 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
13330 the new AcpiEv* calls as appropriate.
13332 ACPI_OS_NAME was removed from the OS-specific headers. The default name
13334 now "Microsoft Windows NT" for maximum compatibility. However this can
13336 changed by modifying the acconfig.h file.
13338 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
13339 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
13341 Run _INI methods on ThermalZone objects. This is against the ACPI
13342 specification, but there is apparently ASL code in the field that has
13344 _INI methods, and apparently "other" AML interpreters execute them.
13346 Performed a full 16/32/64 bit lint that resulted in some small changes.
13348 Added a sleep simulation command to the AML debugger to test sleep code.
13350 Code and Data Size: Current and previous core subsystem library sizes are
13351 shown below. These are the code and data sizes for the acpica.lib
13353 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13354 any ACPI driver or OSPM code. The debug version of the code includes the
13355 debug output trace mechanism and has a much larger code and data size.
13357 that these values will vary depending on the efficiency of the compiler
13359 the compiler options used during generation.
13362 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13363 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13365 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13366 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13368 ----------------------------------------
13369 27 April 2004. Summary of changes for version 20040427:
13371 1) ACPI CA Core Subsystem:
13373 Completed a major overhaul of the GPE handling within ACPI CA. There are
13374 now three types of GPEs: wake-only, runtime-only, and combination
13376 The only GPEs allowed to be combination wake/run are for button-style
13377 devices such as a control-method power button, control-method sleep
13379 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
13381 referenced by any _PRW methods are marked for "runtime" and hardware
13382 enabled. Any GPE that is referenced by a _PRW method is marked for
13384 (and disabled at runtime). However, at sleep time, only those GPEs that
13385 have been specifically enabled for wake via the AcpiEnableGpe interface
13387 actually be hardware enabled.
13389 A new external interface has been added, AcpiSetGpeType(), that is meant
13391 be used by device drivers to force a GPE to a particular type. It will
13393 especially useful for the drivers for the button devices mentioned above.
13395 Completed restructuring of the ACPI CA initialization sequence so that
13396 default operation region handlers are installed before GPEs are
13398 and the _PRW methods are executed. This will prevent errors when the
13400 methods attempt to access system memory or I/O space.
13402 GPE enable/disable no longer reads the GPE enable register. We now keep
13404 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
13405 thus no longer depend on the hardware to maintain these bits.
13407 Always clear the wake status and fixed/GPE status bits before sleep, even
13410 Improved the AML debugger output for displaying the GPE blocks and their
13413 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
13417 Fixed a problem where the physical address was incorrectly calculated
13419 the Load() operator was used to directly load from an Operation Region
13421 loading from a Field object.) Also added check for minimum table length
13425 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
13428 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
13429 consistency with the other fields returned.
13431 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
13432 structure for each GPE in the system, so the size of this structure is
13435 CPU stack requirement reduction: Cleaned up the method execution and
13437 evaluation paths so that now a parameter structure is passed, instead of
13438 copying the various method parameters over and over again.
13440 In evregion.c: Correctly exit and reenter the interpreter region if and
13441 only if dispatching an operation region request to a user-installed
13443 Do not exit/reenter when dispatching to a default handler (e.g., default
13444 system memory or I/O handlers)
13447 Notes for updating drivers for the new GPE support. The following
13449 must be made to ACPI-related device drivers that are attached to one or
13451 GPEs: (This information will be added to the ACPI CA Programmer
13454 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13456 explicitly call AcpiEnableGpe.
13457 2) There is a new interface called AcpiSetGpeType. This should be called
13458 before enabling the GPE. Also, this interface will automatically disable
13459 the GPE if it is currently enabled.
13460 3) AcpiEnableGpe no longer supports a GPE type flag.
13462 Specific drivers that must be changed:
13464 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13465 AeGpeHandler, NULL);
13466 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13467 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13469 2) Button Drivers (Power, Lid, Sleep):
13470 Run _PRW method under parent device
13471 If _PRW exists: /* This is a control-method button */
13472 Extract GPE number and possibly GpeDevice
13473 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13474 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13476 For all other devices that have _PRWs, we automatically set the GPE type
13478 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13480 must be done on a selective basis, usually requiring some kind of user
13482 to allow the user to pick the wake devices.
13485 Code and Data Size: Current and previous core subsystem library sizes are
13486 shown below. These are the code and data sizes for the acpica.lib
13488 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13489 any ACPI driver or OSPM code. The debug version of the code includes the
13490 debug output trace mechanism and has a much larger code and data size.
13492 that these values will vary depending on the efficiency of the compiler
13494 the compiler options used during generation.
13497 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13498 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13501 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13502 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13506 ----------------------------------------
13507 02 April 2004. Summary of changes for version 20040402:
13509 1) ACPI CA Core Subsystem:
13511 Fixed an interpreter problem where an indirect store through an ArgX
13512 parameter was incorrectly applying the "implicit conversion rules" during
13513 the store. From the ACPI specification: "If the target is a method local
13515 argument (LocalX or ArgX), no conversion is performed and the result is
13516 stored directly to the target". The new behavior is to disable implicit
13517 conversion during ALL stores to an ArgX.
13519 Changed the behavior of the _PRW method scan to ignore any and all errors
13520 returned by a given _PRW. This prevents the scan from aborting from the
13521 failure of any single _PRW.
13523 Moved the runtime configuration parameters from the global init procedure
13525 static variables in acglobal.h. This will allow the host to override the
13526 default values easily.
13528 Code and Data Size: Current and previous core subsystem library sizes are
13529 shown below. These are the code and data sizes for the acpica.lib
13531 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13532 any ACPI driver or OSPM code. The debug version of the code includes the
13533 debug output trace mechanism and has a much larger code and data size.
13535 that these values will vary depending on the efficiency of the compiler
13537 the compiler options used during generation.
13540 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13541 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13543 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13544 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13547 2) iASL Compiler/Disassembler:
13549 iASL now fully disassembles SSDTs. However, External() statements are
13551 generated automatically for unresolved symbols at this time. This is a
13552 planned feature for future implementation.
13554 Fixed a scoping problem in the disassembler that occurs when the type of
13556 target of a Scope() operator is overridden. This problem caused an
13557 incorrectly nested internal namespace to be constructed.
13559 Any warnings or errors that are emitted during disassembly are now
13561 out automatically so that the resulting file can be recompiled without
13565 ----------------------------------------
13566 26 March 2004. Summary of changes for version 20040326:
13568 1) ACPI CA Core Subsystem:
13570 Implemented support for "wake" GPEs via interaction between GPEs and the
13571 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13572 identified as a WAKE GPE and by default will no longer be enabled at
13573 runtime. Previously, we were blindly enabling all GPEs with a
13575 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13577 believe this has been the cause of thousands of "spurious" GPEs on some
13580 This new GPE behavior is can be reverted to the original behavior (enable
13581 ALL GPEs at runtime) via a runtime flag.
13583 Fixed a problem where aliased control methods could not access objects
13584 properly. The proper scope within the namespace was not initialized
13585 (transferred to the target of the aliased method) before executing the
13588 Fixed a potential race condition on internal object deletion on the
13590 object in AcpiEvaluateObject.
13592 Integrated a fix for resource descriptors where both _MEM and _MTP were
13593 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13594 wide, 0x0F instead of 0x03.)
13596 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13599 fault in some cases.
13601 Updated Notify() values for debug statements in evmisc.c
13603 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13605 Code and Data Size: Current and previous core subsystem library sizes are
13606 shown below. These are the code and data sizes for the acpica.lib
13608 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13609 any ACPI driver or OSPM code. The debug version of the code includes the
13610 debug output trace mechanism and has a much larger code and data size.
13612 that these values will vary depending on the efficiency of the compiler
13614 the compiler options used during generation.
13618 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13619 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13621 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13622 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13624 ----------------------------------------
13625 11 March 2004. Summary of changes for version 20040311:
13627 1) ACPI CA Core Subsystem:
13629 Fixed a problem where errors occurring during the parse phase of control
13630 method execution did not abort cleanly. For example, objects created and
13631 installed in the namespace were not deleted. This caused all subsequent
13632 invocations of the method to return the AE_ALREADY_EXISTS exception.
13634 Implemented a mechanism to force a control method to "Serialized"
13636 if the method attempts to create namespace objects. (The root of the
13637 AE_ALREADY_EXISTS problem.)
13639 Implemented support for the predefined _OSI "internal" control method.
13640 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13642 "Windows 2001.1", and can be easily upgraded for new strings as
13644 This feature will allow "other" operating systems to execute the fully
13645 tested, "Windows" code path through the ASL code
13647 Global Lock Support: Now allows multiple acquires and releases with any
13648 internal thread. Removed concept of "owning thread" for this special
13651 Fixed two functions that were inappropriately declaring large objects on
13653 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13655 method execution considerably.
13657 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13658 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13660 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13661 defined on the machine.
13663 Implemented two runtime options: One to force all control method
13665 to "Serialized" to mimic Windows behavior, another to disable _OSI
13667 if it causes problems on a given machine.
13669 Code and Data Size: Current and previous core subsystem library sizes are
13670 shown below. These are the code and data sizes for the acpica.lib
13672 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13673 any ACPI driver or OSPM code. The debug version of the code includes the
13674 debug output trace mechanism and has a much larger code and data size.
13676 that these values will vary depending on the efficiency of the compiler
13678 the compiler options used during generation.
13681 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13682 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13684 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13685 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13687 2) iASL Compiler/Disassembler:
13689 Fixed an array size problem for FreeBSD that would cause the compiler to
13692 ----------------------------------------
13693 20 February 2004. Summary of changes for version 20040220:
13696 1) ACPI CA Core Subsystem:
13698 Implemented execution of _SxD methods for Device objects in the
13699 GetObjectInfo interface.
13701 Fixed calls to _SST method to pass the correct arguments.
13703 Added a call to _SST on wake to restore to "working" state.
13705 Check for End-Of-Buffer failure case in the WalkResources interface.
13707 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13708 structures to the beginning of the file.
13710 After wake, clear GPE status register(s) before enabling GPEs.
13712 After wake, clear/enable power button. (Perhaps we should clear/enable
13714 fixed events upon wake.)
13716 Fixed a couple of possible memory leaks in the Namespace manager.
13718 Integrated latest acnetbsd.h file.
13720 ----------------------------------------
13721 11 February 2004. Summary of changes for version 20040211:
13724 1) ACPI CA Core Subsystem:
13726 Completed investigation and implementation of the call-by-reference
13727 mechanism for control method arguments.
13729 Fixed a problem where a store of an object into an indexed package could
13730 fail if the store occurs within a different method than the method that
13731 created the package.
13733 Fixed a problem where the ToDecimal operator could return incorrect
13736 Fixed a problem where the CopyObject operator could fail on some of the
13738 obscure objects (e.g., Reference objects.)
13740 Improved the output of the Debug object to display buffer, package, and
13743 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13745 the expected result.
13747 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13748 ACPI_AML_INTERNAL exception.
13750 Integrated latest version of acfreebsd.h
13752 ----------------------------------------
13753 16 January 2004. Summary of changes for version 20040116:
13755 The purpose of this release is primarily to update the copyright years in
13756 each module, thus causing a huge number of diffs. There are a few small
13757 functional changes, however.
13759 1) ACPI CA Core Subsystem:
13761 Improved error messages when there is a problem finding one or more of
13763 required base ACPI tables
13765 Reintroduced the definition of APIC_HEADER in actbl.h
13767 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13769 Removed extraneous reference to NewObj in dsmthdat.c
13773 Fixed a problem introduced in December that disabled the correct
13775 of Resource Templates
13778 ----------------------------------------
13779 03 December 2003. Summary of changes for version 20031203:
13781 1) ACPI CA Core Subsystem:
13783 Changed the initialization of Operation Regions during subsystem
13784 init to perform two entire walks of the ACPI namespace; The first
13785 to initialize the regions themselves, the second to execute the
13786 _REG methods. This fixed some interdependencies across _REG
13787 methods found on some machines.
13789 Fixed a problem where a Store(Local0, Local1) could simply update
13790 the object reference count, and not create a new copy of the
13791 object if the Local1 is uninitialized.
13793 Implemented support for the _SST reserved method during sleep
13796 Implemented support to clear the SLP_TYP and SLP_EN bits when
13797 waking up, this is apparently required by some machines.
13799 When sleeping, clear the wake status only if SleepState is not S5.
13801 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13802 pointer arithmetic advanced a string pointer too far.
13804 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13805 could be returned if the requested table has not been loaded.
13807 Within the support for IRQ resources, restructured the handling of
13808 the active and edge/level bits.
13810 Fixed a few problems in AcpiPsxExecute() where memory could be
13811 leaked under certain error conditions.
13813 Improved error messages for the cases where the ACPI mode could
13816 Code and Data Size: Current and previous core subsystem library
13817 sizes are shown below. These are the code and data sizes for the
13818 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13819 these values do not include any ACPI driver or OSPM code. The
13820 debug version of the code includes the debug output trace
13821 mechanism and has a much larger code and data size. Note that
13822 these values will vary depending on the efficiency of the compiler
13823 and the compiler options used during generation.
13825 Previous Release (20031029):
13826 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13827 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13829 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13830 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13832 2) iASL Compiler/Disassembler:
13834 Implemented a fix for the iASL disassembler where a bad index was
13835 generated. This was most noticeable on 64-bit platforms
13838 ----------------------------------------
13839 29 October 2003. Summary of changes for version 20031029:
13841 1) ACPI CA Core Subsystem:
13844 Fixed a problem where a level-triggered GPE with an associated
13845 _Lxx control method was incorrectly cleared twice.
13847 Fixed a problem with the Field support code where an access can
13848 occur beyond the end-of-region if the field is non-aligned but
13849 extends to the very end of the parent region (resulted in an
13850 AE_AML_REGION_LIMIT exception.)
13852 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13853 would not get invoked on an RTC event. The RTC event bitmasks for
13854 the PM1 registers were not being initialized properly.
13856 Implemented support for executing _STA and _INI methods for
13857 Processor objects. Although this is currently not part of the
13858 ACPI specification, there is existing ASL code that depends on the
13859 init-time execution of these methods.
13861 Implemented and deployed a GetDescriptorName function to decode
13862 the various types of internal descriptors. Guards against null
13863 descriptors during debug output also.
13865 Implemented and deployed a GetNodeName function to extract the 4-
13866 character namespace node name. This function simplifies the debug
13867 and error output, as well as guarding against null pointers during
13870 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13871 simplify the debug and error output of 64-bit integers. This
13872 macro replaces the HIDWORD and LODWORD macros for dumping these
13875 Updated the implementation of the Stall() operator to only call
13876 AcpiOsStall(), and also return an error if the operand is larger
13877 than 255. This preserves the required behavior of not
13878 relinquishing the processor, as would happen if AcpiOsSleep() was
13879 called for "long stalls".
13881 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13882 initialized are now treated as NOOPs.
13884 Cleaned up a handful of warnings during 64-bit generation.
13886 Fixed a reported error where and incorrect GPE number was passed
13887 to the GPE dispatch handler. This value is only used for error
13888 output, however. Used this opportunity to clean up and streamline
13889 the GPE dispatch code.
13891 Code and Data Size: Current and previous core subsystem library
13892 sizes are shown below. These are the code and data sizes for the
13893 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13894 these values do not include any ACPI driver or OSPM code. The
13896 debug version of the code includes the debug output trace
13897 mechanism and has a much larger code and data size. Note that
13898 these values will vary depending on the efficiency of the compiler
13899 and the compiler options used during generation.
13901 Previous Release (20031002):
13902 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13903 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13905 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13906 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13909 2) iASL Compiler/Disassembler:
13911 Updated the iASL compiler to return an error if the operand to the
13912 Stall() operator is larger than 255.
13915 ----------------------------------------
13916 02 October 2003. Summary of changes for version 20031002:
13919 1) ACPI CA Core Subsystem:
13921 Fixed a problem with Index Fields where the index was not
13922 incremented for fields that require multiple writes to the
13923 index/data registers (Fields that are wider than the data
13926 Fixed a problem with all Field objects where a write could go
13927 beyond the end-of-field if the field was larger than the access
13928 granularity and therefore required multiple writes to complete the
13929 request. An extra write beyond the end of the field could happen
13932 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13933 would incorrectly be returned if the width of the Data Register
13934 was larger than the specified field access width.
13936 Completed fixes for LoadTable() and Unload() and verified their
13937 operation. Implemented full support for the "DdbHandle" object
13938 throughout the ACPI CA subsystem.
13940 Implemented full support for the MADT and ECDT tables in the ACPI
13941 CA header files. Even though these tables are not directly
13942 consumed by ACPI CA, the header definitions are useful for ACPI
13945 Integrated resource descriptor fixes posted to the Linux ACPI
13946 list. This included checks for minimum descriptor length, and
13947 support for trailing NULL strings within descriptors that have
13948 optional string elements.
13950 Code and Data Size: Current and previous core subsystem library
13951 sizes are shown below. These are the code and data sizes for the
13952 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13953 these values do not include any ACPI driver or OSPM code. The
13954 debug version of the code includes the debug output trace
13955 mechanism and has a much larger code and data size. Note that
13956 these values will vary depending on the efficiency of the compiler
13957 and the compiler options used during generation.
13959 Previous Release (20030918):
13960 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13961 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13963 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13964 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13969 Implemented detection of non-ASCII characters within the input
13970 source ASL file. This catches attempts to compile binary (AML)
13971 files early in the compile, with an informative error message.
13973 Fixed a problem where the disassembler would fault if the output
13974 filename could not be generated or if the output file could not be
13977 ----------------------------------------
13978 18 September 2003. Summary of changes for version 20030918:
13981 1) ACPI CA Core Subsystem:
13983 Found and fixed a longstanding problem with the late execution of
13984 the various deferred AML opcodes (such as Operation Regions,
13985 Buffer Fields, Buffers, and Packages). If the name string
13986 specified for the name of the new object placed the object in a
13987 scope other than the current scope, the initialization/execution
13988 of the opcode failed. The solution to this problem was to
13989 implement a mechanism where the late execution of such opcodes
13990 does not attempt to lookup/create the name a second time in an
13991 incorrect scope. This fixes the "region size computed
13992 incorrectly" problem.
13994 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13995 Global Lock AE_BAD_PARAMETER error.
13997 Fixed several 64-bit issues with prototypes, casting and data
14000 Removed duplicate prototype from acdisasm.h
14002 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
14004 Code and Data Size: Current and previous core subsystem library
14005 sizes are shown below. These are the code and data sizes for the
14006 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14007 these values do not include any ACPI driver or OSPM code. The
14008 debug version of the code includes the debug output trace
14009 mechanism and has a much larger code and data size. Note that
14010 these values will vary depending on the efficiency of the compiler
14011 and the compiler options used during generation.
14015 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14016 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14018 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
14019 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
14024 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
14025 correct sleep time in seconds.
14027 ----------------------------------------
14028 14 July 2003. Summary of changes for version 20030619:
14030 1) ACPI CA Core Subsystem:
14032 Parse SSDTs in order discovered, as opposed to reverse order
14035 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
14042 Dynamically allocate SDT list (suggested by Andi Kleen)
14044 proc function return value cleanups (Andi Kleen)
14046 Correctly handle NMI watchdog during long stalls (Andrew Morton)
14048 Make it so acpismp=force works (reported by Andrew Morton)
14051 ----------------------------------------
14052 19 June 2003. Summary of changes for version 20030619:
14054 1) ACPI CA Core Subsystem:
14056 Fix To/FromBCD, eliminating the need for an arch-specific #define.
14058 Do not acquire a semaphore in the S5 shutdown path.
14060 Fix ex_digits_needed for 0. (Takayoshi Kochi)
14062 Fix sleep/stall code reversal. (Andi Kleen)
14064 Revert a change having to do with control method calling
14069 acpiphp update (Takayoshi Kochi)
14071 Export acpi_disabled for sonypi (Stelian Pop)
14073 Mention acpismp=force in config help
14075 Re-add acpitable.c and acpismp=force. This improves backwards
14077 compatibility and also cleans up the code to a significant degree.
14079 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
14081 ----------------------------------------
14082 22 May 2003. Summary of changes for version 20030522:
14084 1) ACPI CA Core Subsystem:
14086 Found and fixed a reported problem where an AE_NOT_FOUND error
14087 occurred occasionally during _BST evaluation. This turned out to
14088 be an Owner ID allocation issue where a called method did not get
14089 a new ID assigned to it. Eventually, (after 64k calls), the Owner
14090 ID UINT16 would wraparound so that the ID would be the same as the
14091 caller's and the called method would delete the caller's
14094 Implemented extended error reporting for control methods that are
14095 aborted due to a run-time exception. Output includes the exact
14096 AML instruction that caused the method abort, a dump of the method
14097 locals and arguments at the time of the abort, and a trace of all
14098 nested control method calls.
14100 Modified the interpreter to allow the creation of buffers of zero
14101 length from the AML code. Implemented new code to ensure that no
14102 attempt is made to actually allocate a memory buffer (of length
14103 zero) - instead, a simple buffer object with a NULL buffer pointer
14104 and length zero is created. A warning is no longer issued when
14105 the AML attempts to create a zero-length buffer.
14107 Implemented a workaround for the "leading asterisk issue" in
14108 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
14109 asterisk is automatically removed if present in any HID, UID, or
14110 CID strings. The iASL compiler will still flag this asterisk as
14113 Implemented full support for _CID methods that return a package of
14114 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
14115 now additionally returns a device _CID list if present. This
14116 required a change to the external interface in order to pass an
14117 ACPI_BUFFER object as a parameter since the _CID list is of
14120 Fixed a problem with the new AE_SAME_HANDLER exception where
14121 handler initialization code did not know about this exception.
14123 Code and Data Size: Current and previous core subsystem library
14124 sizes are shown below. These are the code and data sizes for the
14125 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
14126 these values do not include any ACPI driver or OSPM code. The
14127 debug version of the code includes the debug output trace
14128 mechanism and has a much larger code and data size. Note that
14129 these values will vary depending on the efficiency of the compiler
14130 and the compiler options used during generation.
14132 Previous Release (20030509):
14133 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14134 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14136 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
14137 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
14142 Fixed a bug in which we would reinitialize the ACPI interrupt
14143 after it was already working, thus disabling all ACPI and the IRQs
14144 for any other device sharing the interrupt. (Thanks to Stian
14147 Toshiba driver update (John Belmonte)
14149 Return only 0 or 1 for our interrupt handler status (Andrew
14155 Fixed a reported problem where multiple (nested) ElseIf()
14156 statements were not handled correctly by the compiler, resulting
14157 in incorrect warnings and incorrect AML code. This was a problem
14158 in both the ASL parser and the code generator.
14163 Added changes to existing interfaces, new exception codes, and new
14164 text concerning reference count object management versus garbage
14167 ----------------------------------------
14168 09 May 2003. Summary of changes for version 20030509.
14171 1) ACPI CA Core Subsystem:
14173 Changed the subsystem initialization sequence to hold off
14174 installation of address space handlers until the hardware has been
14175 initialized and the system has entered ACPI mode. This is because
14176 the installation of space handlers can cause _REG methods to be
14177 run. Previously, the _REG methods could potentially be run before
14178 ACPI mode was enabled.
14180 Fixed some memory leak issues related to address space handler and
14181 notify handler installation. There were some problems with the
14182 reference count mechanism caused by the fact that the handler
14183 objects are shared across several namespace objects.
14185 Fixed a reported problem where reference counts within the
14186 namespace were not properly updated when named objects created by
14187 method execution were deleted.
14189 Fixed a reported problem where multiple SSDTs caused a deletion
14190 issue during subsystem termination. Restructured the table data
14191 structures to simplify the linked lists and the related code.
14193 Fixed a problem where the table ID associated with secondary
14194 tables (SSDTs) was not being propagated into the namespace objects
14195 created by those tables. This would only present a problem for
14196 tables that are unloaded at run-time, however.
14198 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
14199 type as the length parameter (instead of UINT32).
14201 Solved a long-standing problem where an ALREADY_EXISTS error
14202 appears on various systems. This problem could happen when there
14203 are multiple PCI_Config operation regions under a single PCI root
14204 bus. This doesn't happen very frequently, but there are some
14205 systems that do this in the ASL.
14207 Fixed a reported problem where the internal DeleteNode function
14208 was incorrectly handling the case where a namespace node was the
14209 first in the parent's child list, and had additional peers (not
14210 the only child, but first in the list of children.)
14212 Code and Data Size: Current core subsystem library sizes are shown
14213 below. These are the code and data sizes for the acpica.lib
14214 produced by the Microsoft Visual C++ 6.0 compiler, and these
14215 values do not include any ACPI driver or OSPM code. The debug
14216 version of the code includes the debug output trace mechanism and
14217 has a much larger code and data size. Note that these values will
14218 vary depending on the efficiency of the compiler and the compiler
14219 options used during generation.
14222 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14223 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14225 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14226 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14231 Allow ":" in OS override string (Ducrot Bruno)
14233 Kobject fix (Greg KH)
14236 3 iASL Compiler/Disassembler:
14238 Fixed a problem in the generation of the C source code files (AML
14239 is emitted in C source statements for BIOS inclusion) where the
14240 Ascii dump that appears within a C comment at the end of each line
14241 could cause a compile time error if the AML sequence happens to
14242 have an open comment or close comment sequence embedded.
14245 ----------------------------------------
14246 24 April 2003. Summary of changes for version 20030424.
14249 1) ACPI CA Core Subsystem:
14251 Support for big-endian systems has been implemented. Most of the
14252 support has been invisibly added behind big-endian versions of the
14253 ACPI_MOVE_* macros.
14255 Fixed a problem in AcpiHwDisableGpeBlock() and
14256 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
14257 low level hardware write routine. The offset parameter was
14258 actually eliminated from the low level read/write routines because
14259 they had become obsolete.
14261 Fixed a problem where a handler object was deleted twice during
14262 the removal of a fixed event handler.
14267 A fix for SMP systems with link devices was contributed by
14271 (2.5) Return whether we handled the interrupt in our IRQ handler.
14272 (Linux ISRs no longer return void, so we can propagate the handler
14273 return value from the ACPI CA core back to the OS.)
14279 The ACPI CA Programmer Reference has been updated to reflect new
14280 interfaces and changes to existing interfaces.
14282 ----------------------------------------
14283 28 March 2003. Summary of changes for version 20030328.
14285 1) ACPI CA Core Subsystem:
14287 The GPE Block Device support has been completed. New interfaces
14288 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
14289 interfaces (enable, disable, clear, getstatus) have been split
14290 into separate interfaces for Fixed Events and General Purpose
14291 Events (GPEs) in order to support GPE Block Devices properly.
14293 Fixed a problem where the error message "Failed to acquire
14294 semaphore" would appear during operations on the embedded
14297 Code and Data Size: Current core subsystem library sizes are shown
14298 below. These are the code and data sizes for the acpica.lib
14299 produced by the Microsoft Visual C++ 6.0 compiler, and these
14300 values do not include any ACPI driver or OSPM code. The debug
14301 version of the code includes the debug output trace mechanism and
14302 has a much larger code and data size. Note that these values will
14303 vary depending on the efficiency of the compiler and the compiler
14304 options used during generation.
14307 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14308 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14310 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14311 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14314 ----------------------------------------
14315 28 February 2003. Summary of changes for version 20030228.
14318 1) ACPI CA Core Subsystem:
14320 The GPE handling and dispatch code has been completely overhauled
14321 in preparation for support of GPE Block Devices (ID ACPI0006).
14322 This affects internal data structures and code only; there should
14323 be no differences visible externally. One new file has been
14326 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
14327 fields that are used to determine the GPE block lengths. The
14328 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
14329 structures are ignored. This is per the ACPI specification but it
14330 isn't very clear. The full 256 Block 0/1 GPEs are now supported
14331 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
14333 In the SCI interrupt handler, removed the read of the PM1_CONTROL
14334 register to look at the SCI_EN bit. On some machines, this read
14335 causes an SMI event and greatly slows down SCI events. (This may
14336 in fact be the cause of slow battery status response on some
14339 Fixed a problem where a store of a NULL string to a package object
14340 could cause the premature deletion of the object. This was seen
14341 during execution of the battery _BIF method on some systems,
14342 resulting in no battery data being returned.
14344 Added AcpiWalkResources interface to simplify parsing of resource
14347 Code and Data Size: Current core subsystem library sizes are shown
14348 below. These are the code and data sizes for the acpica.lib
14349 produced by the Microsoft Visual C++ 6.0 compiler, and these
14350 values do not include any ACPI driver or OSPM code. The debug
14351 version of the code includes the debug output trace mechanism and
14352 has a much larger code and data size. Note that these values will
14353 vary depending on the efficiency of the compiler and the compiler
14354 options used during generation.
14357 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14358 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14360 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14361 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14366 S3 fixes (Ole Rohne)
14368 Update ACPI PHP driver with to use new acpi_walk_resource API
14371 Add S4BIOS support (Pavel Machek)
14373 Map in entire table before performing checksum (John Stultz)
14375 Expand the mem= cmdline to allow the specification of reserved and
14376 ACPI DATA blocks (Pavel Machek)
14378 Never use ACPI on VISWS
14380 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
14382 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
14383 causing us to think that some systems support C2 when they really
14386 Do not count processor objects for non-present CPUs (Thanks to
14392 Fixed a problem where ASL include files could not be found and
14395 Added support for the _PDC reserved name.
14398 ----------------------------------------
14399 22 January 2003. Summary of changes for version 20030122.
14402 1) ACPI CA Core Subsystem:
14404 Added a check for constructs of the form: Store (Local0, Local0)
14405 where Local0 is not initialized. Apparently, some BIOS
14406 programmers believe that this is a NOOP. Since this store doesn't
14407 do anything anyway, the new prototype behavior will ignore this
14408 error. This is a case where we can relax the strict checking in
14409 the interpreter in the name of compatibility.
14414 The AcpiSrc Source Conversion Utility has been released with the
14415 Linux package for the first time. This is the utility that is
14416 used to convert the ACPI CA base source code to the Linux version.
14418 (Both) Handle P_BLK lengths shorter than 6 more gracefully
14420 (Both) Move more headers to include/acpi, and delete an unused
14423 (Both) Move drivers/acpi/include directory to include/acpi
14425 (Both) Boot functions don't use cmdline, so don't pass it around
14427 (Both) Remove include of unused header (Adrian Bunk)
14429 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
14431 former now also includes the latter, acpiphp.h only needs the one,
14434 (2.5) Make it possible to select method of bios restoring after S3
14435 resume. [=> no more ugly ifdefs] (Pavel Machek)
14437 (2.5) Make proc write interfaces work (Pavel Machek)
14439 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
14441 (2.5) Break out ACPI Perf code into its own module, under cpufreq
14442 (Dominik Brodowski)
14444 (2.4) S4BIOS support (Ducrot Bruno)
14446 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
14452 Added support to disassemble SSDT and PSDTs.
14454 Implemented support to obtain SSDTs from the Windows registry if
14458 ----------------------------------------
14459 09 January 2003. Summary of changes for version 20030109.
14461 1) ACPI CA Core Subsystem:
14463 Changed the behavior of the internal Buffer-to-String conversion
14464 function. The current ACPI specification states that the contents
14465 of the buffer are "converted to a string of two-character
14466 hexadecimal numbers, each separated by a space". Unfortunately,
14467 this definition is not backwards compatible with existing ACPI 1.0
14468 implementations (although the behavior was not defined in the ACPI
14469 1.0 specification). The new behavior simply copies data from the
14470 buffer to the string until a null character is found or the end of
14471 the buffer is reached. The new String object is always null
14472 terminated. This problem was seen during the generation of _BIF
14473 battery data where incorrect strings were returned for battery
14474 type, etc. This will also require an errata to the ACPI
14477 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14478 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14480 Copyright in all module headers (both Linux and non-Linux) has be
14483 Code and Data Size: Current core subsystem library sizes are shown
14484 below. These are the code and data sizes for the acpica.lib
14485 produced by the Microsoft Visual C++ 6.0 compiler, and these
14486 values do not include any ACPI driver or OSPM code. The debug
14487 version of the code includes the debug output trace mechanism and
14488 has a much larger code and data size. Note that these values will
14489 vary depending on the efficiency of the compiler and the compiler
14490 options used during generation.
14493 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14494 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14496 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14497 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14502 Fixed an oops on module insertion/removal (Matthew Tippett)
14504 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14506 (2.5) Replace pr_debug (Randy Dunlap)
14508 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14510 (Both) Eliminate spawning of thread from timer callback, in favor
14513 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14515 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14517 (Both) Add missing statics to button.c (Pavel Machek)
14519 Several changes have been made to the source code translation
14520 utility that generates the Linux Code in order to make the code
14523 All typedefs on structs and unions have been removed in keeping
14524 with the Linux coding style.
14526 Removed the non-Linux SourceSafe module revision number from each
14529 Completed major overhaul of symbols to be lowercased for linux.
14530 Doubled the number of symbols that are lowercased.
14532 Fixed a problem where identifiers within procedure headers and
14533 within quotes were not fully lower cased (they were left with a
14536 Some C macros whose only purpose is to allow the generation of 16-
14537 bit code are now completely removed in the Linux code, increasing
14538 readability and maintainability.
14540 ----------------------------------------
14542 12 December 2002. Summary of changes for version 20021212.
14545 1) ACPI CA Core Subsystem:
14547 Fixed a problem where the creation of a zero-length AML Buffer
14548 would cause a fault.
14550 Fixed a problem where a Buffer object that pointed to a static AML
14551 buffer (in an ACPI table) could inadvertently be deleted, causing
14554 Fixed a problem where a user buffer (passed in to the external
14555 ACPI CA interfaces) could be overwritten if the buffer was too
14556 small to complete the operation, causing memory corruption.
14558 Fixed a problem in the Buffer-to-String conversion code where a
14559 string of length one was always returned, regardless of the size
14560 of the input Buffer object.
14562 Removed the NATIVE_CHAR data type across the entire source due to
14563 lack of need and lack of consistent use.
14565 Code and Data Size: Current core subsystem library sizes are shown
14566 below. These are the code and data sizes for the acpica.lib
14567 produced by the Microsoft Visual C++ 6.0 compiler, and these
14568 values do not include any ACPI driver or OSPM code. The debug
14569 version of the code includes the debug output trace mechanism and
14570 has a much larger code and data size. Note that these values will
14571 vary depending on the efficiency of the compiler and the compiler
14572 options used during generation.
14575 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14576 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14578 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14579 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14582 ----------------------------------------
14583 05 December 2002. Summary of changes for version 20021205.
14585 1) ACPI CA Core Subsystem:
14587 Fixed a problem where a store to a String or Buffer object could
14588 cause corruption of the DSDT if the object type being stored was
14589 the same as the target object type and the length of the object
14590 being stored was equal to or smaller than the original (existing)
14591 target object. This was seen to cause corruption of battery _BIF
14592 buffers if the _BIF method modified the buffer on the fly.
14594 Fixed a problem where an internal error was generated if a control
14595 method invocation was used in an OperationRegion, Buffer, or
14596 Package declaration. This was caused by the deferred parsing of
14597 the control method and thus the deferred creation of the internal
14598 method object. The solution to this problem was to create the
14599 internal method object at the moment the method is encountered in
14600 the first pass - so that subsequent references to the method will
14601 able to obtain the required parameter count and thus properly
14602 parse the method invocation. This problem presented itself as an
14603 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14605 Fixed a problem where the internal String object copy routine did
14606 not always allocate sufficient memory for the target String object
14607 and caused memory corruption. This problem was seen to cause
14608 "Allocation already present in list!" errors as memory allocation
14611 Implemented a new function for the evaluation of namespace objects
14612 that allows the specification of the allowable return object
14613 types. This simplifies a lot of code that checks for a return
14614 object of one or more specific objects returned from the
14615 evaluation (such as _STA, etc.) This may become and external
14616 function if it would be useful to ACPI-related drivers.
14618 Completed another round of prefixing #defines with "ACPI_" for
14621 Completed additional code restructuring to allow more modular
14622 linking for iASL compiler and AcpiExec. Several files were split
14623 creating new files. New files: nsparse.c dsinit.c evgpe.c
14625 Implemented an abort mechanism to terminate an executing control
14626 method via the AML debugger. This feature is useful for debugging
14627 control methods that depend (wait) for specific hardware
14630 Code and Data Size: Current core subsystem library sizes are shown
14631 below. These are the code and data sizes for the acpica.lib
14632 produced by the Microsoft Visual C++ 6.0 compiler, and these
14633 values do not include any ACPI driver or OSPM code. The debug
14634 version of the code includes the debug output trace mechanism and
14635 has a much larger code and data size. Note that these values will
14636 vary depending on the efficiency of the compiler and the compiler
14637 options used during generation.
14640 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14641 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14643 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14644 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14647 2) iASL Compiler/Disassembler
14649 Fixed a compiler code generation problem for "Interrupt" Resource
14650 Descriptors. If specified in the ASL, the optional "Resource
14651 Source Index" and "Resource Source" fields were not inserted into
14652 the correct location within the AML resource descriptor, creating
14653 an invalid descriptor.
14655 Fixed a disassembler problem for "Interrupt" resource descriptors.
14656 The optional "Resource Source Index" and "Resource Source" fields
14660 ----------------------------------------
14661 22 November 2002. Summary of changes for version 20021122.
14664 1) ACPI CA Core Subsystem:
14666 Fixed a reported problem where an object stored to a Method Local
14667 or Arg was not copied to a new object during the store - the
14668 object pointer was simply copied to the Local/Arg. This caused
14669 all subsequent operations on the Local/Arg to also affect the
14670 original source of the store operation.
14672 Fixed a problem where a store operation to a Method Local or Arg
14673 was not completed properly if the Local/Arg contained a reference
14674 (from RefOf) to a named field. The general-purpose store-to-
14675 namespace-node code is now used so that this case is handled
14678 Fixed a problem where the internal object copy routine would cause
14679 a protection fault if the object being copied was a Package and
14680 contained either 1) a NULL package element or 2) a nested sub-
14683 Fixed a problem with the GPE initialization that resulted from an
14684 ambiguity in the ACPI specification. One section of the
14685 specification states that both the address and length of the GPE
14686 block must be zero if the block is not supported. Another section
14687 implies that only the address need be zero if the block is not
14688 supported. The code has been changed so that both the address and
14689 the length must be non-zero to indicate a valid GPE block (i.e.,
14690 if either the address or the length is zero, the GPE block is
14693 Code and Data Size: Current core subsystem library sizes are shown
14694 below. These are the code and data sizes for the acpica.lib
14695 produced by the Microsoft Visual C++ 6.0 compiler, and these
14696 values do not include any ACPI driver or OSPM code. The debug
14697 version of the code includes the debug output trace mechanism and
14698 has a much larger code and data size. Note that these values will
14699 vary depending on the efficiency of the compiler and the compiler
14700 options used during generation.
14703 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14704 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14706 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14707 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14712 Cleaned up EC driver. Exported an external EC read/write
14713 interface. By going through this, other drivers (most notably
14714 sonypi) will be able to serialize access to the EC.
14717 3) iASL Compiler/Disassembler
14719 Implemented support to optionally generate include files for both
14720 ASM and C (the -i switch). This simplifies BIOS development by
14721 automatically creating include files that contain external
14722 declarations for the symbols that are created within the
14724 (optionally generated) ASM and C AML source files.
14727 ----------------------------------------
14728 15 November 2002. Summary of changes for version 20021115.
14730 1) ACPI CA Core Subsystem:
14732 Fixed a memory leak problem where an error during resolution of
14734 method arguments during a method invocation from another method
14735 failed to cleanup properly by deleting all successfully resolved
14738 Fixed a problem where the target of the Index() operator was not
14739 correctly constructed if the source object was a package. This
14740 problem has not been detected because the use of a target operand
14741 with Index() is very rare.
14743 Fixed a problem with the Index() operator where an attempt was
14744 made to delete the operand objects twice.
14746 Fixed a problem where an attempt was made to delete an operand
14747 twice during execution of the CondRefOf() operator if the target
14750 Implemented the first of perhaps several internal create object
14751 functions that create and initialize a specific object type. This
14752 consolidates duplicated code wherever the object is created, thus
14753 shrinking the size of the subsystem.
14755 Implemented improved debug/error messages for errors that occur
14756 during nested method invocations. All executing method pathnames
14757 are displayed (with the error) as the call stack is unwound - thus
14760 Fixed a problem introduced in the 10/02 release that caused
14761 premature deletion of a buffer object if a buffer was used as an
14762 ASL operand where an integer operand is required (Thus causing an
14763 implicit object conversion from Buffer to Integer.) The change in
14764 the 10/02 release was attempting to fix a memory leak (albeit
14767 Code and Data Size: Current core subsystem library sizes are shown
14768 below. These are the code and data sizes for the acpica.lib
14769 produced by the Microsoft Visual C++ 6.0 compiler, and these
14770 values do not include any ACPI driver or OSPM code. The debug
14771 version of the code includes the debug output trace mechanism and
14772 has a much larger code and data size. Note that these values will
14773 vary depending on the efficiency of the compiler and the compiler
14774 options used during generation.
14777 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14778 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14780 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14781 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14786 Changed the implementation of the ACPI semaphores to use down()
14787 instead of down_interruptable(). It is important that the
14788 execution of ACPI control methods not be interrupted by signals.
14789 Methods must run to completion, or the system may be left in an
14790 unknown/unstable state.
14792 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14796 3) iASL Compiler/Disassembler
14799 Changed the default location of output files. All output files
14800 are now placed in the current directory by default instead of in
14801 the directory of the source file. This change may affect some
14802 existing makefiles, but it brings the behavior of the compiler in
14803 line with other similar tools. The location of the output files
14804 can be overridden with the -p command line switch.
14807 ----------------------------------------
14808 11 November 2002. Summary of changes for version 20021111.
14811 0) ACPI Specification 2.0B is released and is now available at:
14812 http://www.acpi.info/index.html
14815 1) ACPI CA Core Subsystem:
14817 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14818 This includes the early detection and handoff of the request to
14819 the SMBus region handler (avoiding all of the complex field
14820 support code), and support for the bidirectional return packet
14821 from an SMBus write operation. This paves the way for the
14822 development of SMBus drivers in each host operating system.
14824 Fixed a problem where the semaphore WAIT_FOREVER constant was
14825 defined as 32 bits, but must be 16 bits according to the ACPI
14826 specification. This had the side effect of causing ASL
14827 Mutex/Event timeouts even though the ASL code requested a wait
14828 forever. Changed all internal references to the ACPI timeout
14829 parameter to 16 bits to prevent future problems. Changed the name
14830 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14832 Code and Data Size: Current core subsystem library sizes are shown
14833 below. These are the code and data sizes for the acpica.lib
14834 produced by the Microsoft Visual C++ 6.0 compiler, and these
14835 values do not include any ACPI driver or OSPM code. The debug
14836 version of the code includes the debug output trace mechanism and
14837 has a much larger code and data size. Note that these values will
14838 vary depending on the efficiency of the compiler and the compiler
14839 options used during generation.
14842 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14843 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14845 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14846 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14851 Module loading/unloading fixes (John Cagle)
14854 3) iASL Compiler/Disassembler
14856 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14858 Implemented support for the disassembly of all SMBus protocol
14859 keywords (SMBQuick, SMBWord, etc.)
14861 ----------------------------------------
14862 01 November 2002. Summary of changes for version 20021101.
14865 1) ACPI CA Core Subsystem:
14867 Fixed a problem where platforms that have a GPE1 block but no GPE0
14868 block were not handled correctly. This resulted in a "GPE
14869 overlap" error message. GPE0 is no longer required.
14871 Removed code added in the previous release that inserted nodes
14872 into the namespace in alphabetical order. This caused some side-
14873 effects on various machines. The root cause of the problem is
14874 still under investigation since in theory, the internal ordering
14875 of the namespace nodes should not matter.
14878 Enhanced error reporting for the case where a named object is not
14879 found during control method execution. The full ACPI namepath
14880 (name reference) of the object that was not found is displayed in
14883 Note: as a result of the overhaul of the namespace object types in
14884 the previous release, the namespace nodes for the predefined
14885 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14886 instead of ACPI_TYPE_ANY. This simplifies the namespace
14887 management code but may affect code that walks the namespace tree
14888 looking for specific object types.
14890 Code and Data Size: Current core subsystem library sizes are shown
14891 below. These are the code and data sizes for the acpica.lib
14892 produced by the Microsoft Visual C++ 6.0 compiler, and these
14893 values do not include any ACPI driver or OSPM code. The debug
14894 version of the code includes the debug output trace mechanism and
14895 has a much larger code and data size. Note that these values will
14896 vary depending on the efficiency of the compiler and the compiler
14897 options used during generation.
14900 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14901 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14903 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14904 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14909 Fixed a problem introduced in the previous release where the
14910 Processor and Thermal objects were not recognized and installed in
14911 /proc. This was related to the scope type change described above.
14914 3) iASL Compiler/Disassembler
14916 Implemented the -g option to get all of the required ACPI tables
14917 from the registry and save them to files (Windows version of the
14918 compiler only.) The required tables are the FADT, FACS, and DSDT.
14920 Added ACPI table checksum validation during table disassembly in
14921 order to catch corrupted tables.
14924 ----------------------------------------
14925 22 October 2002. Summary of changes for version 20021022.
14927 1) ACPI CA Core Subsystem:
14929 Implemented a restriction on the Scope operator that the target
14930 must already exist in the namespace at the time the operator is
14931 encountered (during table load or method execution). In other
14932 words, forward references are not allowed and Scope() cannot
14933 create a new object. This changes the previous behavior where the
14934 interpreter would create the name if not found. This new behavior
14935 correctly enables the search-to-root algorithm during namespace
14936 lookup of the target name. Because of this upsearch, this fixes
14937 the known Compaq _SB_.OKEC problem and makes both the AML
14938 interpreter and iASL compiler compatible with other ACPI
14941 Completed a major overhaul of the internal ACPI object types for
14942 the ACPI Namespace and the associated operand objects. Many of
14943 these types had become obsolete with the introduction of the two-
14944 pass namespace load. This cleanup simplifies the code and makes
14945 the entire namespace load mechanism much clearer and easier to
14948 Improved debug output for tracking scope opening/closing to help
14949 diagnose scoping issues. The old scope name as well as the new
14950 scope name are displayed. Also improved error messages for
14951 problems with ASL Mutex objects and error messages for GPE
14954 Cleaned up the namespace dump code, removed obsolete code.
14956 All string output (for all namespace/object dumps) now uses the
14957 common ACPI string output procedure which handles escapes properly
14958 and does not emit non-printable characters.
14960 Fixed some issues with constants in the 64-bit version of the
14961 local C library (utclib.c)
14966 EC Driver: No longer attempts to acquire the Global Lock at
14970 3) iASL Compiler/Disassembler
14972 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14973 2 opcodes outside of a control method. This means that the
14974 "executable" operators (versus the "namespace" operators) cannot
14975 be used at the table level; they can only be used within a control
14978 Implemented the restriction on the Scope() operator where the
14979 target must already exist in the namespace at the time the
14980 operator is encountered (during ASL compilation). In other words,
14981 forward references are not allowed and Scope() cannot create a new
14982 object. This makes the iASL compiler compatible with other ACPI
14983 implementations and makes the Scope() implementation adhere to the
14984 ACPI specification.
14986 Fixed a problem where namepath optimization for the Alias operator
14987 was optimizing the wrong path (of the two namepaths.) This caused
14988 a "Missing alias link" error message.
14990 Fixed a problem where an "unknown reserved name" warning could be
14991 incorrectly generated for names like "_SB" when the trailing
14992 underscore is not used in the original ASL.
14994 Fixed a problem where the reserved name check did not handle
14995 NamePaths with multiple NameSegs correctly. The first nameseg of
14996 the NamePath was examined instead of the last NameSeg.
14999 ----------------------------------------
15001 02 October 2002. Summary of changes for this release.
15004 1) ACPI CA Core Subsystem version 20021002:
15006 Fixed a problem where a store/copy of a string to an existing
15007 string did not always set the string length properly in the String
15010 Fixed a reported problem with the ToString operator where the
15011 behavior was identical to the ToHexString operator instead of just
15012 simply converting a raw buffer to a string data type.
15014 Fixed a problem where CopyObject and the other "explicit"
15015 conversion operators were not updating the internal namespace node
15016 type as part of the store operation.
15018 Fixed a memory leak during implicit source operand conversion
15019 where the original object was not deleted if it was converted to a
15020 new object of a different type.
15022 Enhanced error messages for all problems associated with namespace
15023 lookups. Common procedure generates and prints the lookup name as
15024 well as the formatted status.
15026 Completed implementation of a new design for the Alias support
15027 within the namespace. The existing design did not handle the case
15028 where a new object was assigned to one of the two names due to the
15029 use of an explicit conversion operator, resulting in the two names
15030 pointing to two different objects. The new design simply points
15031 the Alias name to the original name node - not to the object.
15032 This results in a level of indirection that must be handled in the
15033 name resolution mechanism.
15035 Code and Data Size: Current core subsystem library sizes are shown
15036 below. These are the code and data sizes for the acpica.lib
15037 produced by the Microsoft Visual C++ 6.0 compiler, and these
15038 values do not include any ACPI driver or OSPM code. The debug
15039 version of the code includes the debug output trace mechanism and
15040 has a larger code and data size. Note that these values will vary
15041 depending on the efficiency of the compiler and the compiler
15042 options used during generation.
15045 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15046 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15048 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
15049 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
15054 Initialize thermal driver's timer before it is used. (Knut
15057 Allow handling negative celsius values. (Kochi Takayoshi)
15059 Fix thermal management and make trip points. R/W (Pavel Machek)
15061 Fix /proc/acpi/sleep. (P. Christeas)
15063 IA64 fixes. (David Mosberger)
15065 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
15067 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
15071 3) iASL Compiler/Disassembler
15073 Clarified some warning/error messages.
15076 ----------------------------------------
15077 18 September 2002. Summary of changes for this release.
15080 1) ACPI CA Core Subsystem version 20020918:
15082 Fixed a reported problem with reference chaining (via the Index()
15083 and RefOf() operators) in the ObjectType() and SizeOf() operators.
15084 The definition of these operators includes the dereferencing of
15085 all chained references to return information on the base object.
15087 Fixed a problem with stores to indexed package elements - the
15088 existing code would not complete the store if an "implicit
15089 conversion" was not performed. In other words, if the existing
15090 object (package element) was to be replaced completely, the code
15091 didn't handle this case.
15093 Relaxed typechecking on the ASL "Scope" operator to allow the
15094 target name to refer to an object of type Integer, String, or
15095 Buffer, in addition to the scoping object types (Device,
15096 predefined Scopes, Processor, PowerResource, and ThermalZone.)
15097 This allows existing AML code that has workarounds for a bug in
15098 Windows to function properly. A warning is issued, however. This
15099 affects both the AML interpreter and the iASL compiler. Below is
15100 an example of this type of ASL code:
15106 Fixed some reported problems with 64-bit integer support in the
15107 local implementation of C library functions (clib.c)
15112 Use ACPI fix map region instead of IOAPIC region, since it is
15113 undefined in non-SMP.
15115 Ensure that the SCI has the proper polarity and trigger, even on
15116 systems that do not have an interrupt override entry in the MADT.
15118 2.5 big driver reorganization (Pat Mochel)
15120 Use early table mapping code from acpitable.c (Andi Kleen)
15122 New blacklist entries (Andi Kleen)
15124 Blacklist improvements. Split blacklist code out into a separate
15125 file. Move checking the blacklist to very early. Previously, we
15126 would use ACPI tables, and then halfway through init, check the
15127 blacklist -- too late. Now, it's early enough to completely fall-
15131 3) iASL Compiler/Disassembler version 20020918:
15133 Fixed a problem where the typechecking code didn't know that an
15134 alias could point to a method. In other words, aliases were not
15135 being dereferenced during typechecking.
15138 ----------------------------------------
15139 29 August 2002. Summary of changes for this release.
15141 1) ACPI CA Core Subsystem Version 20020829:
15143 If the target of a Scope() operator already exists, it must be an
15144 object type that actually opens a scope -- such as a Device,
15145 Method, Scope, etc. This is a fatal runtime error. Similar error
15146 check has been added to the iASL compiler also.
15148 Tightened up the namespace load to disallow multiple names in the
15149 same scope. This previously was allowed if both objects were of
15150 the same type. (i.e., a lookup was the same as entering a new
15156 Ensure that the ACPI interrupt has the proper trigger and
15159 local_irq_disable is extraneous. (Matthew Wilcox)
15161 Make "acpi=off" actually do what it says, and not use the ACPI
15162 interpreter *or* the tables.
15164 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
15168 3) iASL Compiler/Disassembler Version 20020829:
15170 Implemented namepath optimization for name declarations. For
15171 example, a declaration like "Method (\_SB_.ABCD)" would get
15172 optimized to "Method (ABCD)" if the declaration is within the
15173 \_SB_ scope. This optimization is in addition to the named
15174 reference path optimization first released in the previous
15175 version. This would seem to complete all possible optimizations
15176 for namepaths within the ASL/AML.
15178 If the target of a Scope() operator already exists, it must be an
15179 object type that actually opens a scope -- such as a Device,
15180 Method, Scope, etc.
15182 Implemented a check and warning for unreachable code in the same
15183 block below a Return() statement.
15185 Fixed a problem where the listing file was not generated if the
15186 compiler aborted if the maximum error count was exceeded (200).
15188 Fixed a problem where the typechecking of method return values was
15189 broken. This includes the check for a return value when the
15190 method is invoked as a TermArg (a return value is expected.)
15192 Fixed a reported problem where EOF conditions during a quoted
15193 string or comment caused a fault.
15196 ----------------------------------------
15197 15 August 2002. Summary of changes for this release.
15199 1) ACPI CA Core Subsystem Version 20020815:
15201 Fixed a reported problem where a Store to a method argument that
15202 contains a reference did not perform the indirect store correctly.
15203 This problem was created during the conversion to the new
15204 reference object model - the indirect store to a method argument
15205 code was not updated to reflect the new model.
15207 Reworked the ACPI mode change code to better conform to ACPI 2.0,
15208 handle corner cases, and improve code legibility (Kochi Takayoshi)
15210 Fixed a problem with the pathname parsing for the carat (^)
15211 prefix. The heavy use of the carat operator by the new namepath
15212 optimization in the iASL compiler uncovered a problem with the AML
15213 interpreter handling of this prefix. In the case where one or
15214 more carats precede a single nameseg, the nameseg was treated as
15215 standalone and the search rule (to root) was inadvertently
15216 applied. This could cause both the iASL compiler and the
15217 interpreter to find the wrong object or to miss the error that
15218 should occur if the object does not exist at that exact pathname.
15220 Found and fixed the problem where the HP Pavilion DSDT would not
15221 load. This was a relatively minor tweak to the table loading code
15222 (a problem caused by the unexpected encounter with a method
15223 invocation not within a control method), but it does not solve the
15224 overall issue of the execution of AML code at the table level.
15225 This investigation is still ongoing.
15227 Code and Data Size: Current core subsystem library sizes are shown
15228 below. These are the code and data sizes for the acpica.lib
15229 produced by the Microsoft Visual C++ 6.0 compiler, and these
15230 values do not include any ACPI driver or OSPM code. The debug
15231 version of the code includes the debug output trace mechanism and
15232 has a larger code and data size. Note that these values will vary
15233 depending on the efficiency of the compiler and the compiler
15234 options used during generation.
15237 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15238 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15240 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15241 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15246 Remove redundant slab.h include (Brad Hards)
15248 Fix several bugs in thermal.c (Herbert Nachtnebel)
15250 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
15252 Change acpi_system_suspend to use updated irq functions (Pavel
15255 Export acpi_get_firmware_table (Matthew Wilcox)
15257 Use proper root proc entry for ACPI (Kochi Takayoshi)
15259 Fix early-boot table parsing (Bjorn Helgaas)
15262 3) iASL Compiler/Disassembler
15264 Reworked the compiler options to make them more consistent and to
15265 use two-letter options where appropriate. We were running out of
15266 sensible letters. This may break some makefiles, so check the
15267 current options list by invoking the compiler with no parameters.
15269 Completed the design and implementation of the ASL namepath
15270 optimization option for the compiler. This option optimizes all
15271 references to named objects to the shortest possible path. The
15272 first attempt tries to utilize a single nameseg (4 characters) and
15273 the "search-to-root" algorithm used by the interpreter. If that
15274 cannot be used (because either the name is not in the search path
15275 or there is a conflict with another object with the same name),
15276 the pathname is optimized using the carat prefix (usually a
15277 shorter string than specifying the entire path from the root.)
15279 Implemented support to obtain the DSDT from the Windows registry
15280 (when the disassembly option is specified with no input file).
15281 Added this code as the implementation for AcpiOsTableOverride in
15282 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
15283 utility) to scan memory for the DSDT to the AcpiOsTableOverride
15284 function in the DOS OSL to make the disassembler truly OS
15287 Implemented a new option to disassemble and compile in one step.
15288 When used without an input filename, this option will grab the
15289 DSDT from the local machine, disassemble it, and compile it in one
15292 Added a warning message for invalid escapes (a backslash followed
15293 by any character other than the allowable escapes). This catches
15294 the quoted string error "\_SB_" (which should be "\\_SB_" ).
15296 Also, there are numerous instances in the ACPI specification where
15299 Added a compiler option to disable all optimizations. This is
15300 basically the "compatibility mode" because by using this option,
15301 the AML code will come out exactly the same as other ASL
15304 Added error messages for incorrectly ordered dependent resource
15305 functions. This includes: missing EndDependentFn macro at end of
15306 dependent resource list, nested dependent function macros (both
15307 start and end), and missing StartDependentFn macro. These are
15308 common errors that should be caught at compile time.
15310 Implemented _OSI support for the disassembler and compiler. _OSI
15311 must be included in the namespace for proper disassembly (because
15312 the disassembler must know the number of arguments.)
15314 Added an "optimization" message type that is optional (off by
15315 default). This message is used for all optimizations - including
15316 constant folding, integer optimization, and namepath optimization.
15318 ----------------------------------------
15319 25 July 2002. Summary of changes for this release.
15322 1) ACPI CA Core Subsystem Version 20020725:
15324 The AML Disassembler has been enhanced to produce compilable ASL
15325 code and has been integrated into the iASL compiler (see below) as
15326 well as the single-step disassembly for the AML debugger and the
15327 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
15328 resource templates and macros are fully supported. The
15329 disassembler has been tested on over 30 different AML files,
15330 producing identical AML when the resulting disassembled ASL file
15331 is recompiled with the same ASL compiler.
15333 Modified the Resource Manager to allow zero interrupts and zero
15334 dma channels during the GetCurrentResources call. This was
15335 causing problems on some platforms.
15337 Added the AcpiOsRedirectOutput interface to the OSL to simplify
15338 output redirection for the AcpiOsPrintf and AcpiOsVprintf
15341 Code and Data Size: Current core subsystem library sizes are shown
15342 below. These are the code and data sizes for the acpica.lib
15343 produced by the Microsoft Visual C++ 6.0 compiler, and these
15344 values do not include any ACPI driver or OSPM code. The debug
15345 version of the code includes the debug output trace mechanism and
15346 has a larger code and data size. Note that these values will vary
15347 depending on the efficiency of the compiler and the compiler
15348 options used during generation.
15351 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15352 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15354 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15355 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15360 Fixed a panic in the EC driver (Dominik Brodowski)
15362 Implemented checksum of the R/XSDT itself during Linux table scan
15368 The AML disassembler is integrated into the compiler. The "-d"
15369 option invokes the disassembler to completely disassemble an
15370 input AML file, producing as output a text ASL file with the
15371 extension ".dsl" (to avoid name collisions with existing .asl
15372 source files.) A future enhancement will allow the disassembler
15373 to obtain the BIOS DSDT from the registry under Windows.
15375 Fixed a problem with the VendorShort and VendorLong resource
15376 descriptors where an invalid AML sequence was created.
15378 Implemented a fix for BufferData term in the ASL parser. It was
15379 inadvertently defined twice, allowing invalid syntax to pass and
15380 causing reduction conflicts.
15382 Fixed a problem where the Ones opcode could get converted to a
15383 value of zero if "Ones" was used where a byte, word or dword value
15384 was expected. The 64-bit value is now truncated to the correct
15385 size with the correct value.
15389 ----------------------------------------
15390 02 July 2002. Summary of changes for this release.
15393 1) ACPI CA Core Subsystem Version 20020702:
15395 The Table Manager code has been restructured to add several new
15396 features. Tables that are not required by the core subsystem
15397 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
15398 validated in any way and are returned from AcpiGetFirmwareTable if
15399 requested. The AcpiOsTableOverride interface is now called for
15400 each table that is loaded by the subsystem in order to allow the
15401 host to override any table it chooses. Previously, only the DSDT
15402 could be overridden. Added one new files, tbrsdt.c and
15405 Fixed a problem with the conversion of internal package objects to
15406 external objects (when a package is returned from a control
15407 method.) The return buffer length was set to zero instead of the
15408 proper length of the package object.
15410 Fixed a reported problem with the use of the RefOf and DeRefOf
15411 operators when passing reference arguments to control methods. A
15412 new type of Reference object is used internally for references
15413 produced by the RefOf operator.
15415 Added additional error messages in the Resource Manager to explain
15416 AE_BAD_DATA errors when they occur during resource parsing.
15418 Split the AcpiEnableSubsystem into two primitives to enable a
15419 finer granularity initialization sequence. These two calls should
15420 be called in this order: AcpiEnableSubsystem (flags),
15421 AcpiInitializeObjects (flags). The flags parameter remains the
15427 Updated the ACPI utilities module to understand the new style of
15428 fully resolved package objects that are now returned from the core
15429 subsystem. This eliminates errors of the form:
15431 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
15432 acpi_utils-0430 [145] acpi_evaluate_reference:
15433 Invalid element in package (not a device reference)
15435 The method evaluation utility uses the new buffer allocation
15436 scheme instead of calling AcpiEvaluate Object twice.
15438 Added support for ECDT. This allows the use of the Embedded
15440 Controller before the namespace has been fully initialized, which
15441 is necessary for ACPI 2.0 support, and for some laptops to
15442 initialize properly. (Laptops using ECDT are still rare, so only
15443 limited testing was performed of the added functionality.)
15445 Fixed memory leaks in the EC driver.
15447 Eliminated a brittle code structure in acpi_bus_init().
15449 Eliminated the acpi_evaluate() helper function in utils.c. It is
15450 no longer needed since acpi_evaluate_object can optionally
15451 allocate memory for the return object.
15453 Implemented fix for keyboard hang when getting battery readings on
15454 some systems (Stephen White)
15456 PCI IRQ routing update (Dominik Brodowski)
15458 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15461 ----------------------------------------
15462 11 June 2002. Summary of changes for this release.
15465 1) ACPI CA Core Subsystem Version 20020611:
15467 Fixed a reported problem where constants such as Zero and One
15468 appearing within _PRT packages were not handled correctly within
15469 the resource manager code. Originally reported against the ASL
15470 compiler because the code generator now optimizes integers to
15471 their minimal AML representation (i.e. AML constants if possible.)
15472 The _PRT code now handles all AML constant opcodes correctly
15473 (Zero, One, Ones, Revision).
15475 Fixed a problem with the Concatenate operator in the AML
15476 interpreter where a buffer result object was incorrectly marked as
15477 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15479 All package sub-objects are now fully resolved before they are
15480 returned from the external ACPI interfaces. This means that name
15481 strings are resolved to object handles, and constant operators
15482 (Zero, One, Ones, Revision) are resolved to Integers.
15484 Implemented immediate resolution of the AML Constant opcodes
15485 (Zero, One, Ones, Revision) to Integer objects upon detection
15486 within the AML stream. This has simplified and reduced the
15487 generated code size of the subsystem by eliminating about 10
15488 switch statements for these constants (which previously were
15489 contained in Reference objects.) The complicating issues are that
15490 the Zero opcode is used as a "placeholder" for unspecified
15491 optional target operands and stores to constants are defined to be
15494 Code and Data Size: Current core subsystem library sizes are shown
15495 below. These are the code and data sizes for the acpica.lib
15496 produced by the Microsoft Visual C++ 6.0 compiler, and these
15497 values do not include any ACPI driver or OSPM code. The debug
15498 version of the code includes the debug output trace mechanism and
15499 has a larger code and data size. Note that these values will vary
15500 depending on the efficiency of the compiler and the compiler
15501 options used during generation.
15504 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15505 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15507 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15508 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15514 Added preliminary support for obtaining _TRA data for PCI root
15515 bridges (Bjorn Helgaas).
15518 3) iASL Compiler Version X2046:
15520 Fixed a problem where the "_DDN" reserved name was defined to be a
15521 control method with one argument. There are no arguments, and
15522 _DDN does not have to be a control method.
15524 Fixed a problem with the Linux version of the compiler where the
15525 source lines printed with error messages were the wrong lines.
15526 This turned out to be the "LF versus CR/LF" difference between
15527 Windows and Unix. This appears to be the longstanding issue
15528 concerning listing output and error messages.
15530 Fixed a problem with the Linux version of compiler where opcode
15531 names within error messages were wrong. This was caused by a
15532 slight difference in the output of the Flex tool on Linux versus
15535 Fixed a problem with the Linux compiler where the hex output files
15536 contained some garbage data caused by an internal buffer overrun.
15539 ----------------------------------------
15540 17 May 2002. Summary of changes for this release.
15543 1) ACPI CA Core Subsystem Version 20020517:
15545 Implemented a workaround to an BIOS bug discovered on the HP
15546 OmniBook where the FADT revision number and the table size are
15547 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15548 behavior is to fallback to using only the ACPI 1.0 fields of the
15549 FADT if the table is too small to be a ACPI 2.0 table as claimed
15550 by the revision number. Although this is a BIOS bug, this is a
15551 case where the workaround is simple enough and with no side
15552 effects, so it seemed prudent to add it. A warning message is
15555 Implemented minimum size checks for the fixed-length ACPI tables -
15556 - the FADT and FACS, as well as consistency checks between the
15557 revision number and the table size.
15559 Fixed a reported problem in the table override support where the
15560 new table pointer was incorrectly treated as a physical address
15561 instead of a logical address.
15563 Eliminated the use of the AE_AML_ERROR exception and replaced it
15564 with more descriptive codes.
15566 Fixed a problem where an exception would occur if an ASL Field was
15567 defined with no named Field Units underneath it (used by some
15570 Code and Data Size: Current core subsystem library sizes are shown
15571 below. These are the code and data sizes for the acpica.lib
15572 produced by the Microsoft Visual C++ 6.0 compiler, and these
15573 values do not include any ACPI driver or OSPM code. The debug
15574 version of the code includes the debug output trace mechanism and
15575 has a larger code and data size. Note that these values will vary
15576 depending on the efficiency of the compiler and the compiler
15577 options used during generation.
15580 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15581 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15583 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15584 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15590 Much work done on ACPI init (MADT and PCI IRQ routing support).
15591 (Paul D. and Dominik Brodowski)
15593 Fix PCI IRQ-related panic on boot (Sam Revitch)
15595 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15597 Fix "MHz" typo (Dominik Brodowski)
15599 Fix RTC year 2000 issue (Dominik Brodowski)
15601 Preclude multiple button proc entries (Eric Brunet)
15603 Moved arch-specific code out of include/platform/aclinux.h
15605 3) iASL Compiler Version X2044:
15607 Implemented error checking for the string used in the EISAID macro
15608 (Usually used in the definition of the _HID object.) The code now
15609 strictly enforces the PnP format - exactly 7 characters, 3
15610 uppercase letters and 4 hex digits.
15612 If a raw string is used in the definition of the _HID object
15613 (instead of the EISAID macro), the string must contain all
15614 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15617 Implemented checking for invalid use of ACPI reserved names for
15618 most of the name creation operators (Name, Device, Event, Mutex,
15619 OperationRegion, PowerResource, Processor, and ThermalZone.)
15620 Previously, this check was only performed for control methods.
15622 Implemented an additional check on the Name operator to emit an
15623 error if a reserved name that must be implemented in ASL as a
15624 control method is used. We know that a reserved name must be a
15625 method if it is defined with input arguments.
15627 The warning emitted when a namespace object reference is not found
15628 during the cross reference phase has been changed into an error.
15629 The "External" directive should be used for names defined in other
15633 4) Tools and Utilities
15635 The 16-bit tools (adump16 and aexec16) have been regenerated and
15638 Fixed a problem with the output of both acpidump and adump16 where
15639 the indentation of closing parentheses and brackets was not
15641 aligned properly with the parent block.
15644 ----------------------------------------
15645 03 May 2002. Summary of changes for this release.
15648 1) ACPI CA Core Subsystem Version 20020503:
15650 Added support a new OSL interface that allows the host operating
15652 system software to override the DSDT found in the firmware -
15653 AcpiOsTableOverride. With this interface, the OSL can examine the
15654 version of the firmware DSDT and replace it with a different one
15657 Added new external interfaces for accessing ACPI registers from
15658 device drivers and other system software - AcpiGetRegister and
15659 AcpiSetRegister. This was simply an externalization of the
15660 existing AcpiHwBitRegister interfaces.
15662 Fixed a regression introduced in the previous build where the
15663 ASL/AML CreateField operator always returned an error,
15664 "destination must be a NS Node".
15666 Extended the maximum time (before failure) to successfully enable
15667 ACPI mode to 3 seconds.
15669 Code and Data Size: Current core subsystem library sizes are shown
15670 below. These are the code and data sizes for the acpica.lib
15671 produced by the Microsoft Visual C++ 6.0 compiler, and these
15672 values do not include any ACPI driver or OSPM code. The debug
15673 version of the code includes the debug output trace mechanism and
15674 has a larger code and data size. Note that these values will vary
15675 depending on the efficiency of the compiler and the compiler
15676 options used during generation.
15679 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15680 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15682 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15683 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15688 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15689 free. While 3 out of 4 of our in-house systems work fine, the last
15690 one still hangs when testing the LAPIC timer.
15692 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15695 Added warning on boot for Presario 711FR.
15697 Sleep improvements (Pavel Machek)
15699 ACPI can now be built without CONFIG_PCI enabled.
15701 IA64: Fixed memory map functions (JI Lee)
15704 3) iASL Compiler Version X2043:
15706 Added support to allow the compiler to be integrated into the MS
15707 VC++ development environment for one-button compilation of single
15708 files or entire projects -- with error-to-source-line mapping.
15710 Implemented support for compile-time constant folding for the
15711 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15712 specification. This allows the ASL writer to use expressions
15713 instead of Integer/Buffer/String constants in terms that must
15714 evaluate to constants at compile time and will also simplify the
15715 emitted AML in any such sub-expressions that can be folded
15716 (evaluated at compile-time.) This increases the size of the
15717 compiler significantly because a portion of the ACPI CA AML
15718 interpreter is included within the compiler in order to pre-
15719 evaluate constant expressions.
15722 Fixed a problem with the "Unicode" ASL macro that caused the
15723 compiler to fault. (This macro is used in conjunction with the
15724 _STR reserved name.)
15726 Implemented an AML opcode optimization to use the Zero, One, and
15727 Ones opcodes where possible to further reduce the size of integer
15728 constants and thus reduce the overall size of the generated AML
15731 Implemented error checking for new reserved terms for ACPI version
15734 Implemented the -qr option to display the current list of ACPI
15735 reserved names known to the compiler.
15737 Implemented the -qc option to display the current list of ASL
15738 operators that are allowed within constant expressions and can
15739 therefore be folded at compile time if the operands are constants.
15744 Updated the Programmer's Reference for new interfaces, data types,
15745 and memory allocation model options.
15747 Updated the iASL Compiler User Reference to apply new format and
15748 add information about new features and options.
15750 ----------------------------------------
15751 19 April 2002. Summary of changes for this release.
15753 1) ACPI CA Core Subsystem Version 20020419:
15755 The source code base for the Core Subsystem has been completely
15756 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15757 versions. The Lint option files used are included in the
15758 /acpi/generate/lint directory.
15760 Implemented enhanced status/error checking across the entire
15761 Hardware manager subsystem. Any hardware errors (reported from
15762 the OSL) are now bubbled up and will abort a running control
15766 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15767 was stored only with control method nodes, causing a fault when
15768 non-control method code was executed during table loading. The
15769 solution implemented uses a global variable to indicate table
15770 width across the entire ACPI subsystem. Therefore, ACPI CA does
15771 not support mixed integer widths across different ACPI tables
15774 Fixed a problem where NULL extended fields (X fields) in an ACPI
15775 2.0 ACPI FADT caused the table load to fail. Although the
15776 existing ACPI specification is a bit fuzzy on this topic, the new
15777 behavior is to fall back on a ACPI 1.0 field if the corresponding
15778 ACPI 2.0 X field is zero (even though the table revision indicates
15779 a full ACPI 2.0 table.) The ACPI specification will be updated to
15780 clarify this issue.
15782 Fixed a problem with the SystemMemory operation region handler
15783 where memory was always accessed byte-wise even if the AML-
15784 specified access width was larger than a byte. This caused
15785 problems on systems with memory-mapped I/O. Memory is now
15786 accessed with the width specified. On systems that do not support
15787 non-aligned transfers, a check is made to guarantee proper address
15788 alignment before proceeding in order to avoid an AML-caused
15789 alignment fault within the kernel.
15792 Fixed a problem with the ExtendedIrq resource where only one byte
15793 of the 4-byte Irq field was extracted.
15795 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15796 function was out of date and required a rewrite.
15798 Code and Data Size: Current core subsystem library sizes are shown
15799 below. These are the code and data sizes for the acpica.lib
15800 produced by the Microsoft Visual C++ 6.0 compiler, and these
15801 values do not include any ACPI driver or OSPM code. The debug
15802 version of the code includes the debug output trace mechanism and
15803 has a larger code and data size. Note that these values will vary
15804 depending on the efficiency of the compiler and the compiler
15805 options used during generation.
15808 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15809 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15811 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15812 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15817 PCI IRQ routing fixes (Dominik Brodowski)
15820 3) iASL Compiler Version X2042:
15822 Implemented an additional compile-time error check for a field
15823 unit whose size + minimum access width would cause a run-time
15824 access beyond the end-of-region. Previously, only the field size
15825 itself was checked.
15827 The Core subsystem and iASL compiler now share a common parse
15828 object in preparation for compile-time evaluation of the type
15829 3/4/5 ASL operators.
15832 ----------------------------------------
15833 Summary of changes for this release: 03_29_02
15835 1) ACPI CA Core Subsystem Version 20020329:
15837 Implemented support for late evaluation of TermArg operands to
15838 Buffer and Package objects. This allows complex expressions to be
15839 used in the declarations of these object types.
15841 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15842 1.0, if the field was larger than 32 bits, it was returned as a
15843 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15844 the field is returned as a buffer only if the field is larger than
15845 64 bits. The TableRevision is now considered when making this
15846 conversion to avoid incompatibility with existing ASL code.
15848 Implemented logical addressing for AcpiOsGetRootPointer. This
15849 allows an RSDP with either a logical or physical address. With
15850 this support, the host OS can now override all ACPI tables with
15851 one logical RSDP. Includes implementation of "typed" pointer
15852 support to allow a common data type for both physical and logical
15853 pointers internally. This required a change to the
15854 AcpiOsGetRootPointer interface.
15856 Implemented the use of ACPI 2.0 Generic Address Structures for all
15857 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15858 mapped I/O for these ACPI features.
15860 Initialization now ignores not only non-required tables (All
15861 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15862 not validate the table headers of unrecognized tables.
15864 Fixed a problem where a notify handler could only be
15865 installed/removed on an object of type Device. All "notify"
15867 objects are now supported -- Devices, Processor, Power, and
15870 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15871 critical information is returned when this debug level is enabled.
15873 Code and Data Size: Current core subsystem library sizes are shown
15874 below. These are the code and data sizes for the acpica.lib
15875 produced by the Microsoft Visual C++ 6.0 compiler, and these
15876 values do not include any ACPI driver or OSPM code. The debug
15877 version of the code includes the debug output trace mechanism and
15878 has a larger code and data size. Note that these values will vary
15879 depending on the efficiency of the compiler and the compiler
15880 options used during generation.
15883 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15884 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15886 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15887 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15892 The processor driver (acpi_processor.c) now fully supports ACPI
15893 2.0-based processor performance control (e.g. Intel(R)
15894 SpeedStep(TM) technology) Note that older laptops that only have
15895 the Intel "applet" interface are not supported through this. The
15896 'limit' and 'performance' interface (/proc) are fully functional.
15897 [Note that basic policy for controlling performance state
15898 transitions will be included in the next version of ospmd.] The
15899 idle handler was modified to more aggressively use C2, and PIIX4
15900 errata handling underwent a complete overhaul (big thanks to
15901 Dominik Brodowski).
15903 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15904 based devices in the ACPI namespace are now dynamically bound
15905 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15906 This allows, among other things, ACPI to resolve bus numbers for
15907 subordinate PCI bridges.
15909 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15910 entries defined underneath PCI bridges.
15912 Added IBM 600E to bad bios list due to invalid _ADR value for
15913 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15915 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15916 (acpi.c, mpparse.c) -- stay tuned.
15918 Added back visual differentiation between fixed-feature and
15919 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15920 button/power/PWRF) to simplify button identification.
15922 We no longer use -Wno-unused when compiling debug. Please ignore
15923 any "_THIS_MODULE defined but not used" messages.
15925 Can now shut down the system using "magic sysrq" key.
15928 3) iASL Compiler version 2041:
15930 Fixed a problem where conversion errors for hex/octal/decimal
15931 constants were not reported.
15933 Implemented a fix for the General Register template Address field.
15934 This field was 8 bits when it should be 64.
15936 Fixed a problem where errors/warnings were no longer being emitted
15937 within the listing output file.
15939 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15940 exactly 4 characters, alphanumeric only.
15945 ----------------------------------------
15946 Summary of changes for this release: 03_08_02
15949 1) ACPI CA Core Subsystem Version 20020308:
15951 Fixed a problem with AML Fields where the use of the "AccessAny"
15952 keyword could cause an interpreter error due to attempting to read
15953 or write beyond the end of the parent Operation Region.
15955 Fixed a problem in the SystemMemory Operation Region handler where
15956 an attempt was made to map memory beyond the end of the region.
15957 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15958 errors on some Linux systems.
15960 Fixed a problem where the interpreter/namespace "search to root"
15961 algorithm was not functioning for some object types. Relaxed the
15962 internal restriction on the search to allow upsearches for all
15963 external object types as well as most internal types.
15968 We now use safe_halt() macro versus individual calls to sti | hlt.
15970 Writing to the processor limit interface should now work. "echo 1"
15971 will increase the limit, 2 will decrease, and 0 will reset to the
15978 Fixed segfault on Linux version.
15981 ----------------------------------------
15982 Summary of changes for this release: 02_25_02
15984 1) ACPI CA Core Subsystem:
15987 Fixed a problem where the GPE bit masks were not initialized
15988 properly, causing erratic GPE behavior.
15990 Implemented limited support for multiple calling conventions. The
15991 code can be generated with either the VPL (variable parameter
15992 list, or "C") convention, or the FPL (fixed parameter list, or
15993 "Pascal") convention. The core subsystem is about 3.4% smaller
15994 when generated with FPL.
15999 Re-add some /proc/acpi/event functionality that was lost during
16002 Resolved issue with /proc events for fixed-feature buttons showing
16003 up as the system device.
16005 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
16007 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
16009 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
16011 Fixed limit interface & usage to fix bugs with passive cooling
16014 Restructured PRT support.
16017 ----------------------------------------
16018 Summary of changes for this label: 02_14_02
16021 1) ACPI CA Core Subsystem:
16023 Implemented support in AcpiLoadTable to allow loading of FACS and
16026 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
16027 been removed. All 64-bit platforms should be migrated to the ACPI
16028 2.0 tables. The actbl71.h header has been removed from the source
16031 All C macros defined within the subsystem have been prefixed with
16032 "ACPI_" to avoid collision with other system include files.
16034 Removed the return value for the two AcpiOsPrint interfaces, since
16035 it is never used and causes lint warnings for ignoring the return
16038 Added error checking to all internal mutex acquire and release
16039 calls. Although a failure from one of these interfaces is
16040 probably a fatal system error, these checks will cause the
16041 immediate abort of the currently executing method or interface.
16043 Fixed a problem where the AcpiSetCurrentResources interface could
16044 fault. This was a side effect of the deployment of the new memory
16047 Fixed a couple of problems with the Global Lock support introduced
16048 in the last major build. The "common" (1.0/2.0) internal FACS was
16049 being overwritten with the FACS signature and clobbering the
16050 Global Lock pointer. Also, the actual firmware FACS was being
16051 unmapped after construction of the "common" FACS, preventing
16052 access to the actual Global Lock field within it. The "common"
16053 internal FACS is no longer installed as an actual ACPI table; it
16054 is used simply as a global.
16056 Code and Data Size: Current core subsystem library sizes are shown
16057 below. These are the code and data sizes for the acpica.lib
16058 produced by the Microsoft Visual C++ 6.0 compiler, and these
16059 values do not include any ACPI driver or OSPM code. The debug
16060 version of the code includes the debug output trace mechanism and
16061 has a larger code and data size. Note that these values will vary
16062 depending on the efficiency of the compiler and the compiler
16063 options used during generation.
16065 Previous Release (02_07_01)
16066 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16067 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16069 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
16070 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
16075 Updated Linux-specific code for core macro and OSL interface
16076 changes described above.
16078 Improved /proc/acpi/event. It now can be opened only once and has
16079 proper poll functionality.
16081 Fixed and restructured power management (acpi_bus).
16083 Only create /proc "view by type" when devices of that class exist.
16085 Fixed "charging/discharging" bug (and others) in acpi_battery.
16087 Improved thermal zone code.
16090 3) ASL Compiler, version X2039:
16093 Implemented the new compiler restriction on ASL String hex/octal
16094 escapes to non-null, ASCII values. An error results if an invalid
16095 value is used. (This will require an ACPI 2.0 specification
16098 AML object labels that are output to the optional C and ASM source
16099 are now prefixed with both the ACPI table signature and table ID
16100 to help guarantee uniqueness within a large BIOS project.
16103 ----------------------------------------
16104 Summary of changes for this label: 02_01_02
16106 1) ACPI CA Core Subsystem:
16108 ACPI 2.0 support is complete in the entire Core Subsystem and the
16109 ASL compiler. All new ACPI 2.0 operators are implemented and all
16110 other changes for ACPI 2.0 support are complete. With
16111 simultaneous code and data optimizations throughout the subsystem,
16112 ACPI 2.0 support has been implemented with almost no additional
16113 cost in terms of code and data size.
16115 Implemented a new mechanism for allocation of return buffers. If
16116 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
16117 be allocated on behalf of the caller. Consolidated all return
16118 buffer validation and allocation to a common procedure. Return
16119 buffers will be allocated via the primary OSL allocation interface
16120 since it appears that a separate pool is not needed by most users.
16121 If a separate pool is required for these buffers, the caller can
16122 still use the original mechanism and pre-allocate the buffer(s).
16124 Implemented support for string operands within the DerefOf
16127 Restructured the Hardware and Event managers to be table driven,
16128 simplifying the source code and reducing the amount of generated
16131 Split the common read/write low-level ACPI register bitfield
16132 procedure into a separate read and write, simplifying the code
16135 Obsoleted the AcpiOsCallocate OSL interface. This interface was
16136 used only a handful of times and didn't have enough critical mass
16137 for a separate interface. Replaced with a common calloc procedure
16140 Fixed a reported problem with the GPE number mapping mechanism
16141 that allows GPE1 numbers to be non-contiguous with GPE0.
16142 Reorganized the GPE information and shrunk a large array that was
16143 originally large enough to hold info for all possible GPEs (256)
16144 to simply large enough to hold all GPEs up to the largest GPE
16145 number on the machine.
16147 Fixed a reported problem with resource structure alignment on 64-
16150 Changed the AcpiEnableEvent and AcpiDisableEvent external
16151 interfaces to not require any flags for the common case of
16152 enabling/disabling a GPE.
16154 Implemented support to allow a "Notify" on a Processor object.
16156 Most TBDs in comments within the source code have been resolved
16160 Fixed a problem in the interpreter where a standalone parent
16161 prefix (^) was not handled correctly in the interpreter and
16164 Removed obsolete and unnecessary GPE save/restore code.
16166 Implemented Field support in the ASL Load operator. This allows a
16167 table to be loaded from a named field, in addition to loading a
16168 table directly from an Operation Region.
16170 Implemented timeout and handle support in the external Global Lock
16173 Fixed a problem in the AcpiDump utility where pathnames were no
16174 longer being generated correctly during the dump of named objects.
16176 Modified the AML debugger to give a full display of if/while
16177 predicates instead of just one AML opcode at a time. (The
16178 predicate can have several nested ASL statements.) The old method
16179 was confusing during single stepping.
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_18_01)
16191 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16192 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16194 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
16195 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
16199 Implemented fix for PIIX reverse throttling errata (Processor
16202 Added new Limit interface (Processor and Thermal drivers)
16204 New thermal policy (Thermal driver)
16206 Many updates to /proc
16208 Battery "low" event support (Battery driver)
16210 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
16212 IA32 - IA64 initialization unification, no longer experimental
16214 Menuconfig options redesigned
16216 3) ASL Compiler, version X2037:
16218 Implemented several new output features to simplify integration of
16219 AML code into firmware: 1) Output the AML in C source code with
16220 labels for each named ASL object. The original ASL source code
16221 is interleaved as C comments. 2) Output the AML in ASM source code
16222 with labels and interleaved ASL source. 3) Output the AML in
16223 raw hex table form, in either C or ASM.
16225 Implemented support for optional string parameters to the
16226 LoadTable operator.
16228 Completed support for embedded escape sequences within string
16229 literals. The compiler now supports all single character escapes
16230 as well as the Octal and Hex escapes. Note: the insertion of a
16231 null byte into a string literal (via the hex/octal escape) causes
16232 the string to be immediately terminated. A warning is issued.
16234 Fixed a problem where incorrect AML was generated for the case
16235 where an ASL namepath consists of a single parent prefix (
16237 ) with no trailing name segments.
16239 The compiler has been successfully generated with a 64-bit C
16245 ----------------------------------------
16246 Summary of changes for this label: 12_18_01
16250 Enhanced blacklist with reason and severity fields. Any table's
16251 signature may now be used to identify a blacklisted system.
16253 Call _PIC control method to inform the firmware which interrupt
16254 model the OS is using. Turn on any disabled link devices.
16256 Cleaned up busmgr /proc error handling (Andreas Dilger)
16258 2) ACPI CA Core Subsystem:
16260 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
16263 Completed implementation of the ACPI 2.0 "Continue",
16264 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
16265 operators. All new ACPI 2.0 operators are now implemented in both
16266 the ASL compiler and the AML interpreter. The only remaining ACPI
16267 2.0 task is support for the String data type in the DerefOf
16268 operator. Fixed a problem with AcquireMutex where the status code
16269 was lost if the caller had to actually wait for the mutex.
16271 Increased the maximum ASL Field size from 64K bits to 4G bits.
16273 Completed implementation of the external Global Lock interfaces --
16274 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
16275 Handler parameters were added.
16277 Completed another pass at removing warnings and issues when
16278 compiling with 64-bit compilers. The code now compiles cleanly
16279 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
16280 add and subtract (diff) macros have changed considerably.
16283 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
16284 64-bit platforms, 32-bits on all others. This type is used
16285 wherever memory allocation and/or the C sizeof() operator is used,
16286 and affects the OSL memory allocation interfaces AcpiOsAllocate
16287 and AcpiOsCallocate.
16289 Implemented sticky user breakpoints in the AML debugger.
16291 Code and Data Size: Current core subsystem library sizes are shown
16292 below. These are the code and data sizes for the acpica.lib
16293 produced by the Microsoft Visual C++ 6.0 compiler, and these
16294 values do not include any ACPI driver or OSPM code. The debug
16295 version of the code includes the debug output trace mechanism and
16296 has a larger code and data size. Note that these values will vary
16297 depending on the efficiency of the compiler and the compiler
16298 options used during generation.
16300 Previous Release (12_05_01)
16301 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16302 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16304 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16305 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16307 3) ASL Compiler, version X2034:
16309 Now checks for (and generates an error if detected) the use of a
16310 Break or Continue statement without an enclosing While statement.
16313 Successfully generated the compiler with the Intel 64-bit C
16316 ----------------------------------------
16317 Summary of changes for this label: 12_05_01
16319 1) ACPI CA Core Subsystem:
16321 The ACPI 2.0 CopyObject operator is fully implemented. This
16322 operator creates a new copy of an object (and is also used to
16323 bypass the "implicit conversion" mechanism of the Store operator.)
16325 The ACPI 2.0 semantics for the SizeOf operator are fully
16326 implemented. The change is that performing a SizeOf on a
16327 reference object causes an automatic dereference of the object to
16328 tha actual value before the size is evaluated. This behavior was
16329 undefined in ACPI 1.0.
16331 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
16332 have been implemented. The interrupt polarity and mode are now
16335 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
16336 appearing in Package objects were not properly converted to
16337 integers when the internal Package was converted to an external
16338 object (via the AcpiEvaluateObject interface.)
16340 Fixed a problem with the namespace object deletion mechanism for
16341 objects created by control methods. There were two parts to this
16342 problem: 1) Objects created during the initialization phase method
16343 parse were not being deleted, and 2) The object owner ID mechanism
16344 to track objects was broken.
16346 Fixed a problem where the use of the ASL Scope operator within a
16347 control method would result in an invalid opcode exception.
16349 Fixed a problem introduced in the previous label where the buffer
16350 length required for the _PRT structure was not being returned
16353 Code and Data Size: Current core subsystem library sizes are shown
16354 below. These are the code and data sizes for the acpica.lib
16355 produced by the Microsoft Visual C++ 6.0 compiler, and these
16356 values do not include any ACPI driver or OSPM code. The debug
16357 version of the code includes the debug output trace mechanism and
16358 has a larger code and data size. Note that these values will vary
16359 depending on the efficiency of the compiler and the compiler
16360 options used during generation.
16362 Previous Release (11_20_01)
16363 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16364 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16367 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16368 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16372 Updated all files to apply cleanly against 2.4.16.
16374 Added basic PCI Interrupt Routing Table (PRT) support for IA32
16375 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
16376 version supports both static and dyanmic PRT entries, but dynamic
16377 entries are treated as if they were static (not yet
16378 reconfigurable). Architecture- specific code to use this data is
16379 absent on IA32 but should be available shortly.
16381 Changed the initialization sequence to start the ACPI interpreter
16382 (acpi_init) prior to initialization of the PCI driver (pci_init)
16383 in init/main.c. This ordering is required to support PRT and
16384 facilitate other (future) enhancement. A side effect is that the
16385 ACPI bus driver and certain device drivers can no longer be loaded
16388 Modified the 'make menuconfig' options to allow PCI Interrupt
16389 Routing support to be included without the ACPI Bus and other
16392 3) ASL Compiler, version X2033:
16394 Fixed some issues with the use of the new CopyObject and
16395 DataTableRegion operators. Both are fully functional.
16397 ----------------------------------------
16398 Summary of changes for this label: 11_20_01
16400 20 November 2001. Summary of changes for this release.
16402 1) ACPI CA Core Subsystem:
16404 Updated Index support to match ACPI 2.0 semantics. Storing a
16405 Integer, String, or Buffer to an Index of a Buffer will store only
16406 the least-significant byte of the source to the Indexed buffer
16407 byte. Multiple writes are not performed.
16409 Fixed a problem where the access type used in an AccessAs ASL
16410 operator was not recorded correctly into the field object.
16412 Fixed a problem where ASL Event objects were created in a
16413 signalled state. Events are now created in an unsignalled state.
16415 The internal object cache is now purged after table loading and
16416 initialization to reduce the use of dynamic kernel memory -- on
16417 the assumption that object use is greatest during the parse phase
16418 of the entire table (versus the run-time use of individual control
16421 ACPI 2.0 variable-length packages are now fully operational.
16423 Code and Data Size: Code and Data optimizations have permitted new
16424 feature development with an actual reduction in the library size.
16425 Current core subsystem library sizes are shown below. These are
16426 the code and data sizes for the acpica.lib produced by the
16427 Microsoft Visual C++ 6.0 compiler, and these values do not include
16428 any ACPI driver or OSPM code. The debug version of the code
16429 includes the debug output trace mechanism and has a larger code
16430 and data size. Note that these values will vary depending on the
16431 efficiency of the compiler and the compiler options used during
16434 Previous Release (11_09_01):
16435 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16436 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16439 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16440 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16444 Enhanced the ACPI boot-time initialization code to allow the use
16445 of Local APIC tables for processor enumeration on IA-32, and to
16446 pave the way for a fully MPS-free boot (on SMP systems) in the
16447 near future. This functionality replaces
16448 arch/i386/kernel/acpitables.c, which was introduced in an earlier
16449 2.4.15-preX release. To enable this feature you must add
16450 "acpi_boot=on" to the kernel command line -- see the help entry
16451 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16454 Restructured the configuration options to allow boot-time table
16455 parsing support without inclusion of the ACPI Interpreter (and
16458 NOTE: This release does not include fixes for the reported events,
16459 power-down, and thermal passive cooling issues (coming soon).
16463 Added additional typechecking for Fields within restricted access
16464 Operation Regions. All fields within EC and CMOS regions must be
16465 declared with ByteAcc. All fields withing SMBus regions must be
16466 declared with the BufferAcc access type.
16468 Fixed a problem where the listing file output of control methods
16469 no longer interleaved the actual AML code with the ASL source
16475 ----------------------------------------
16476 Summary of changes for this label: 11_09_01
16478 1) ACPI CA Core Subsystem:
16480 Implemented ACPI 2.0-defined support for writes to fields with a
16481 Buffer, String, or Integer source operand that is smaller than the
16482 target field. In these cases, the source operand is zero-extended
16483 to fill the target field.
16485 Fixed a problem where a Field starting bit offset (within the
16486 parent operation region) was calculated incorrectly if the
16488 alignment of the field differed from the access width. This
16489 affected CreateWordField, CreateDwordField, CreateQwordField, and
16490 possibly other fields that use the "AccessAny" keyword.
16492 Fixed a problem introduced in the 11_02_01 release where indirect
16493 stores through method arguments did not operate correctly.
16497 Implemented boot-time ACPI table parsing support
16498 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16499 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16500 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16501 processors, memory, and interrupts during setup_arch(). Note that
16502 this patch does not include the required architecture-specific
16503 changes required to apply this information -- subsequent patches
16504 will be posted for both IA32 and IA64 to achieve this.
16506 Added low-level sleep support for IA32 platforms, courtesy of Pat
16507 Mochel. This allows IA32 systems to transition to/from various
16508 sleeping states (e.g. S1, S3), although the lack of a centralized
16509 driver model and power-manageable drivers will prevent its
16510 (successful) use on most systems.
16512 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16513 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16514 tables" option, etc.
16516 Increased the default timeout for the EC driver from 1ms to 10ms
16517 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16520 ----------------------------------------
16521 Summary of changes for this label: 11_02_01
16523 1) ACPI CA Core Subsystem:
16525 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16526 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16529 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16530 changes to support ACPI 2.0 Qword field access. Read/Write
16531 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16532 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16533 the value parameter for the address space handler interface is now
16534 an ACPI_INTEGER. OSL implementations of these interfaces must now
16535 handle the case where the Width parameter is 64.
16537 Index Fields: Fixed a problem where unaligned bit assembly and
16538 disassembly for IndexFields was not supported correctly.
16540 Index and Bank Fields: Nested Index and Bank Fields are now
16541 supported. During field access, a check is performed to ensure
16542 that the value written to an Index or Bank register is not out of
16543 the range of the register. The Index (or Bank) register is
16544 written before each access to the field data. Future support will
16545 include allowing individual IndexFields to be wider than the
16546 DataRegister width.
16548 Fields: Fixed a problem where the AML interpreter was incorrectly
16549 attempting to write beyond the end of a Field/OpRegion. This was
16550 a boundary case that occurred when a DWORD field was written to a
16551 BYTE access OpRegion, forcing multiple writes and causing the
16552 interpreter to write one datum too many.
16554 Fields: Fixed a problem with Field/OpRegion access where the
16555 starting bit address of a field was incorrectly calculated if the
16556 current access type was wider than a byte (WordAcc, DwordAcc, or
16559 Fields: Fixed a problem where forward references to individual
16560 FieldUnits (individual Field names within a Field definition) were
16561 not resolved during the AML table load.
16563 Fields: Fixed a problem where forward references from a Field
16564 definition to the parent Operation Region definition were not
16565 resolved during the AML table load.
16567 Fields: Duplicate FieldUnit names within a scope are now detected
16568 during AML table load.
16570 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16571 returned an incorrect name for the root node.
16573 Code and Data Size: Code and Data optimizations have permitted new
16574 feature development with an actual reduction in the library size.
16575 Current core subsystem library sizes are shown below. These are
16576 the code and data sizes for the acpica.lib produced by the
16577 Microsoft Visual C++ 6.0 compiler, and these values do not include
16578 any ACPI driver or OSPM code. The debug version of the code
16579 includes the debug output trace mechanism and has a larger code
16580 and data size. Note that these values will vary depending on the
16581 efficiency of the compiler and the compiler options used during
16584 Previous Release (10_18_01):
16585 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16586 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16589 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16590 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16594 Improved /proc processor output (Pavel Machek) Re-added
16595 MODULE_LICENSE("GPL") to all modules.
16597 3) ASL Compiler version X2030:
16599 Duplicate FieldUnit names within a scope are now detected and
16604 Programmer Reference updated to reflect OSL and address space
16605 handler interface changes described above.
16607 ----------------------------------------
16608 Summary of changes for this label: 10_18_01
16610 ACPI CA Core Subsystem:
16612 Fixed a problem with the internal object reference count mechanism
16613 that occasionally caused premature object deletion. This resolves
16614 all of the outstanding problem reports where an object is deleted
16615 in the middle of an interpreter evaluation. Although this problem
16616 only showed up in rather obscure cases, the solution to the
16617 problem involved an adjustment of all reference counts involving
16618 objects attached to namespace nodes.
16620 Fixed a problem with Field support in the interpreter where
16621 writing to an aligned field whose length is an exact multiple (2
16622 or greater) of the field access granularity would cause an attempt
16623 to write beyond the end of the field.
16625 The top level AML opcode execution functions within the
16626 interpreter have been renamed with a more meaningful and
16627 consistent naming convention. The modules exmonad.c and
16628 exdyadic.c were eliminated. New modules are exoparg1.c,
16629 exoparg2.c, exoparg3.c, and exoparg6.c.
16631 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16633 Fixed a problem where the AML debugger was causing some internal
16634 objects to not be deleted during subsystem termination.
16636 Fixed a problem with the external AcpiEvaluateObject interface
16637 where the subsystem would fault if the named object to be
16638 evaluated refered to a constant such as Zero, Ones, etc.
16640 Fixed a problem with IndexFields and BankFields where the
16641 subsystem would fault if the index, data, or bank registers were
16642 not defined in the same scope as the field itself.
16644 Added printf format string checking for compilers that support
16645 this feature. Corrected more than 50 instances of issues with
16646 format specifiers within invocations of ACPI_DEBUG_PRINT
16647 throughout the core subsystem code.
16649 The ASL "Revision" operator now returns the ACPI support level
16650 implemented in the core - the value "2" since the ACPI 2.0 support
16651 is more than 50% implemented.
16653 Enhanced the output of the AML debugger "dump namespace" command
16654 to output in a more human-readable form.
16656 Current core subsystem library code sizes are shown below. These
16658 are the code and data sizes for the acpica.lib produced by the
16659 Microsoft Visual C++ 6.0 compiler, and these values do not include
16660 any ACPI driver or OSPM code. The debug version of the code
16661 includes the full debug trace mechanism -- leading to a much
16663 larger code and data size. Note that these values will vary
16664 depending on the efficiency of the compiler and the compiler
16665 options used during generation.
16667 Previous Label (09_20_01):
16668 Non-Debug Version: 65K Code, 5K Data, 70K Total
16669 Debug Version: 138K Code, 58K Data, 196K Total
16673 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16674 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16678 Implemented a "Bad BIOS Blacklist" to track machines that have
16679 known ASL/AML problems.
16681 Enhanced the /proc interface for the thermal zone driver and added
16682 support for _HOT (the critical suspend trip point). The 'info'
16683 file now includes threshold/policy information, and allows setting
16684 of _SCP (cooling preference) and _TZP (polling frequency) values
16685 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16686 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16687 preference to the passive/quiet mode (if supported by the ASL).
16689 Implemented a workaround for a gcc bug that resuted in an OOPs
16690 when loading the control method battery driver.
16692 ----------------------------------------
16693 Summary of changes for this label: 09_20_01
16695 ACPI CA Core Subsystem:
16697 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16698 modified to allow individual GPE levels to be flagged as wake-
16699 enabled (i.e., these GPEs are to remain enabled when the platform
16702 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16703 support wake-enabled GPEs. This means that upon entering the
16704 sleep state, all GPEs that are not wake-enabled are disabled.
16705 When leaving the sleep state, these GPEs are reenabled.
16707 A local double-precision divide/modulo module has been added to
16708 enhance portability to OS kernels where a 64-bit math library is
16709 not available. The new module is "utmath.c".
16711 Several optimizations have been made to reduce the use of CPU
16712 stack. Originally over 2K, the maximum stack usage is now below
16713 2K at 1860 bytes (1.82k)
16715 Fixed a problem with the AcpiGetFirmwareTable interface where the
16716 root table pointer was not mapped into a logical address properly.
16718 Fixed a problem where a NULL pointer was being dereferenced in the
16719 interpreter code for the ASL Notify operator.
16721 Fixed a problem where the use of the ASL Revision operator
16722 returned an error. This operator now returns the current version
16723 of the ACPI CA core subsystem.
16725 Fixed a problem where objects passed as control method parameters
16726 to AcpiEvaluateObject were always deleted at method termination.
16727 However, these objects may end up being stored into the namespace
16728 by the called method. The object reference count mechanism was
16729 applied to these objects instead of a force delete.
16731 Fixed a problem where static strings or buffers (contained in the
16732 AML code) that are declared as package elements within the ASL
16733 code could cause a fault because the interpreter would attempt to
16734 delete them. These objects are now marked with the "static
16735 object" flag to prevent any attempt to delete them.
16737 Implemented an interpreter optimization to use operands directly
16738 from the state object instead of extracting the operands to local
16739 variables. This reduces stack use and code size, and improves
16742 The module exxface.c was eliminated as it was an unnecessary extra
16745 Current core subsystem library code sizes are shown below. These
16746 are the code and data sizes for the acpica.lib produced by the
16747 Microsoft Visual C++ 6.0 compiler, and these values do not include
16748 any ACPI driver or OSPM code. The debug version of the code
16749 includes the full debug trace mechanism -- leading to a much
16750 larger code and data size. Note that these values will vary
16751 depending on the efficiency of the compiler and the compiler
16752 options used during generation.
16754 Non-Debug Version: 65K Code, 5K Data, 70K Total
16755 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16756 Total (Previously 195K)
16760 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16761 Integer objects are now 64 bits wide
16763 All Acpi data types and structures are now in lower case. Only
16764 Acpi macros are upper case for differentiation.
16768 Changes to the external interfaces as described above.
16770 ----------------------------------------
16771 Summary of changes for this label: 08_31_01
16773 ACPI CA Core Subsystem:
16775 A bug with interpreter implementation of the ASL Divide operator
16776 was found and fixed. The implicit function return value (not the
16777 explicit store operands) was returning the remainder instead of
16778 the quotient. This was a longstanding bug and it fixes several
16779 known outstanding issues on various platforms.
16781 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16782 been further optimized for size. There are 700 invocations of the
16783 DEBUG_PRINT macro alone, so each optimization reduces the size of
16784 the debug version of the subsystem significantly.
16786 A stack trace mechanism has been implemented. The maximum stack
16787 usage is about 2K on 32-bit platforms. The debugger command "stat
16788 stack" will display the current maximum stack usage.
16790 All public symbols and global variables within the subsystem are
16791 now prefixed with the string "Acpi". This keeps all of the
16792 symbols grouped together in a kernel map, and avoids conflicts
16793 with other kernel subsystems.
16795 Most of the internal fixed lookup tables have been moved into the
16796 code segment via the const operator.
16798 Several enhancements have been made to the interpreter to both
16799 reduce the code size and improve performance.
16801 Current core subsystem library code sizes are shown below. These
16802 are the code and data sizes for the acpica.lib produced by the
16803 Microsoft Visual C++ 6.0 compiler, and these values do not include
16804 any ACPI driver or OSPM code. The debug version of the code
16805 includes the full debug trace mechanism which contains over 700
16806 invocations of the DEBUG_PRINT macro, 500 function entry macro
16807 invocations, and over 900 function exit macro invocations --
16808 leading to a much larger code and data size. Note that these
16809 values will vary depending on the efficiency of the compiler and
16810 the compiler options used during generation.
16812 Non-Debug Version: 64K Code, 5K Data, 69K Total
16813 Debug Version: 137K Code, 58K Data, 195K Total
16817 Implemented wbinvd() macro, pending a kernel-wide definition.
16819 Fixed /proc/acpi/event to handle poll() and short reads.
16821 ASL Compiler, version X2026:
16823 Fixed a problem introduced in the previous label where the AML
16825 code emitted for package objects produced packages with zero
16828 ----------------------------------------
16829 Summary of changes for this label: 08_16_01
16831 ACPI CA Core Subsystem:
16833 The following ACPI 2.0 ASL operators have been implemented in the
16834 AML interpreter (These are already supported by the Intel ASL
16835 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16836 ToBuffer. Support for 64-bit AML constants is implemented in the
16837 AML parser, debugger, and disassembler.
16839 The internal memory tracking mechanism (leak detection code) has
16840 been upgraded to reduce the memory overhead (a separate tracking
16841 block is no longer allocated for each memory allocation), and now
16842 supports all of the internal object caches.
16844 The data structures and code for the internal object caches have
16845 been coelesced and optimized so that there is a single cache and
16846 memory list data structure and a single group of functions that
16847 implement generic cache management. This has reduced the code
16848 size in both the debug and release versions of the subsystem.
16850 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16851 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16852 different, because it generates a single call to an internal
16853 function. This results in a savings of about 90 bytes per
16854 invocation, resulting in an overall code and data savings of about
16855 16% in the debug version of the subsystem.
16859 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16862 Integrated low-level sleep code by Patrick Mochel.
16864 Further tweaked source code Linuxization.
16870 Support for ACPI 2.0 variable length packages is fixed/completed.
16872 Fixed a problem where the optional length parameter for the ACPI
16873 2.0 ToString operator.
16875 Fixed multiple extraneous error messages when a syntax error is
16876 detected within the declaration line of a control method.
16878 ----------------------------------------
16879 Summary of changes for this label: 07_17_01
16881 ACPI CA Core Subsystem:
16883 Added a new interface named AcpiGetFirmwareTable to obtain any
16884 ACPI table via the ACPI signature. The interface can be called at
16885 any time during kernel initialization, even before the kernel
16886 virtual memory manager is initialized and paging is enabled. This
16887 allows kernel subsystems to obtain ACPI tables very early, even
16888 before the ACPI CA subsystem is initialized.
16890 Fixed a problem where Fields defined with the AnyAcc attribute
16891 could be resolved to the incorrect address under the following
16892 conditions: 1) the field width is larger than 8 bits and 2) the
16893 parent operation region is not defined on a DWORD boundary.
16895 Fixed a problem where the interpreter is not being locked during
16896 namespace initialization (during execution of the _INI control
16897 methods), causing an error when an attempt is made to release it
16900 ACPI 2.0 support in the AML Interpreter has begun and will be
16901 ongoing throughout the rest of this year. In this label, The Mod
16902 operator is implemented.
16904 Added a new data type to contain full PCI addresses named
16905 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16906 and Function values.
16910 Enhanced the Linux version of the source code to change most
16911 capitalized ACPI type names to lowercase. For example, all
16912 instances of ACPI_STATUS are changed to acpi_status. This will
16913 result in a large diff, but the change is strictly cosmetic and
16914 aligns the CA code closer to the Linux coding standard.
16918 The interfaces to the PCI configuration space have been changed to
16919 add the PCI Segment number and to split the single 32-bit combined
16920 DeviceFunction field into two 16-bit fields. This was
16921 accomplished by moving the four values that define an address in
16922 PCI configuration space (segment, bus, device, and function) to
16923 the new ACPI_PCI_ID structure.
16925 The changes to the PCI configuration space interfaces led to a
16926 reexamination of the complete set of address space access
16927 interfaces for PCI, I/O, and Memory. The previously existing 18
16928 interfaces have proven difficult to maintain (any small change
16929 must be propagated across at least 6 interfaces) and do not easily
16930 allow for future expansion to 64 bits if necessary. Also, on some
16931 systems, it would not be appropriate to demultiplex the access
16932 width (8, 16, 32,or 64) before calling the OSL if the
16933 corresponding native OS interfaces contain a similar access width
16934 parameter. For these reasons, the 18 address space interfaces
16935 have been replaced by these 6 new ones:
16937 AcpiOsReadPciConfiguration
16938 AcpiOsWritePciConfiguration
16944 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16945 to perform the platform and/or OS-specific actions necessary to
16946 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16947 interface will simply call down to the CA core to perform the low-
16948 memory search for the table. On IA-64, the RSDP is obtained from
16949 EFI. Migrating this interface to the OSL allows the CA core to
16951 remain OS and platform independent.
16953 Added a new interface named AcpiOsSignal to provide a generic
16954 "function code and pointer" interface for various miscellaneous
16955 signals and notifications that must be made to the host OS. The
16956 first such signals are intended to support the ASL Fatal and
16957 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16958 interface has been obsoleted.
16960 The definition of the AcpiFormatException interface has been
16961 changed to simplify its use. The caller no longer must supply a
16962 buffer to the call; A pointer to a const string is now returned
16963 directly. This allows the call to be easily used in printf
16964 statements, etc. since the caller does not have to manage a local
16968 ASL Compiler, Version X2025:
16970 The ACPI 2.0 Switch/Case/Default operators have been implemented
16971 and are fully functional. They will work with all ACPI 1.0
16972 interpreters, since the operators are simply translated to If/Else
16975 The ACPI 2.0 ElseIf operator is implemented and will also work
16976 with 1.0 interpreters, for the same reason.
16978 Implemented support for ACPI 2.0 variable-length packages. These
16979 packages have a separate opcode, and their size is determined by
16980 the interpreter at run-time.
16982 Documentation The ACPI CA Programmer Reference has been updated to
16983 reflect the new interfaces and changes to existing interfaces.
16985 ------------------------------------------
16986 Summary of changes for this label: 06_15_01
16988 ACPI CA Core Subsystem:
16990 Fixed a problem where a DWORD-accessed field within a Buffer
16991 object would get its byte address inadvertently rounded down to
16992 the nearest DWORD. Buffers are always Byte-accessible.
16994 ASL Compiler, version X2024:
16996 Fixed a problem where the Switch() operator would either fault or
16997 hang the compiler. Note however, that the AML code for this ACPI
16998 2.0 operator is not yet implemented.
17000 Compiler uses the new AcpiOsGetTimer interface to obtain compile
17003 Implementation of the CreateField operator automatically converts
17004 a reference to a named field within a resource descriptor from a
17005 byte offset to a bit offset if required.
17007 Added some missing named fields from the resource descriptor
17008 support. These are the names that are automatically created by the
17009 compiler to reference fields within a descriptor. They are only
17010 valid at compile time and are not passed through to the AML
17013 Resource descriptor named fields are now typed as Integers and
17014 subject to compile-time typechecking when used in expressions.
17016 ------------------------------------------
17017 Summary of changes for this label: 05_18_01
17019 ACPI CA Core Subsystem:
17021 Fixed a couple of problems in the Field support code where bits
17022 from adjacent fields could be returned along with the proper field
17023 bits. Restructured the field support code to improve performance,
17024 readability and maintainability.
17026 New DEBUG_PRINTP macro automatically inserts the procedure name
17027 into the output, saving hundreds of copies of procedure name
17028 strings within the source, shrinking the memory footprint of the
17029 debug version of the core subsystem.
17031 Source Code Structure:
17033 The source code directory tree was restructured to reflect the
17034 current organization of the component architecture. Some files
17035 and directories have been moved and/or renamed.
17039 Fixed leaking kacpidpc processes.
17041 Fixed queueing event data even when /proc/acpi/event is not
17044 ASL Compiler, version X2020:
17046 Memory allocation performance enhancement - over 24X compile time
17047 improvement on large ASL files. Parse nodes and namestring
17048 buffers are now allocated from a large internal compiler buffer.
17050 The temporary .SRC file is deleted unless the "-s" option is
17053 The "-d" debug output option now sends all output to the .DBG file
17054 instead of the console.
17056 "External" second parameter is now optional
17058 "ElseIf" syntax now properly allows the predicate
17060 Last operand to "Load" now recognized as a Target operand
17062 Debug object can now be used anywhere as a normal object.
17064 ResourceTemplate now returns an object of type BUFFER
17066 EISAID now returns an object of type INTEGER
17068 "Index" now works with a STRING operand
17070 "LoadTable" now accepts optional parameters
17072 "ToString" length parameter is now optional
17074 "Interrupt (ResourceType," parse error fixed.
17076 "Register" with a user-defined region space parse error fixed
17078 Escaped backslash at the end of a string ("\\") scan/parse error
17081 "Revision" is now an object of type INTEGER.
17085 ------------------------------------------
17086 Summary of changes for this label: 05_02_01
17090 /proc/acpi/event now blocks properly.
17092 Removed /proc/sys/acpi. You can still dump your DSDT from
17095 ACPI CA Core Subsystem:
17097 Fixed a problem introduced in the previous label where some of the
17098 "small" resource descriptor types were not recognized.
17100 Improved error messages for the case where an ASL Field is outside
17101 the range of the parent operation region.
17103 ASL Compiler, version X2018:
17106 Added error detection for ASL Fields that extend beyond the length
17107 of the parent operation region (only if the length of the region
17108 is known at compile time.) This includes fields that have a
17109 minimum access width that is smaller than the parent region, and
17110 individual field units that are partially or entirely beyond the
17111 extent of the parent.
17115 ------------------------------------------
17116 Summary of changes for this label: 04_27_01
17118 ACPI CA Core Subsystem:
17120 Fixed a problem where the namespace mutex could be released at the
17121 wrong time during execution of AcpiRemoveAddressSpaceHandler.
17123 Added optional thread ID output for debug traces, to simplify
17124 debugging of multiple threads. Added context switch notification
17125 when the debug code realizes that a different thread is now
17126 executing ACPI code.
17128 Some additional external data types have been prefixed with the
17129 string "ACPI_" for consistency. This may effect existing code.
17130 The data types affected are the external callback typedefs - e.g.,
17132 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
17136 Fixed an issue with the OSL semaphore implementation where a
17137 thread was waking up with an error from receiving a SIGCHLD
17140 Linux version of ACPI CA now uses the system C library for string
17141 manipulation routines instead of a local implementation.
17143 Cleaned up comments and removed TBDs.
17145 ASL Compiler, version X2017:
17147 Enhanced error detection and reporting for all file I/O
17152 Programmer Reference updated to version 1.06.
17156 ------------------------------------------
17157 Summary of changes for this label: 04_13_01
17159 ACPI CA Core Subsystem:
17161 Restructured support for BufferFields and RegionFields.
17162 BankFields support is now fully operational. All known 32-bit
17163 limitations on field sizes have been removed. Both BufferFields
17164 and (Operation) RegionFields are now supported by the same field
17167 Resource support now supports QWORD address and IO resources. The
17168 16/32/64 bit address structures and the Extended IRQ structure
17169 have been changed to properly handle Source Resource strings.
17171 A ThreadId of -1 is now used to indicate a "mutex not acquired"
17172 condition internally and must never be returned by AcpiOsThreadId.
17173 This reserved value was changed from 0 since Unix systems allow a
17178 Driver code reorganized to enhance portability
17180 Added a kernel configuration option to control ACPI_DEBUG
17182 Fixed the EC driver to honor _GLK.
17184 ASL Compiler, version X2016:
17186 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
17187 address space was set to 0, not 0x7f as it should be.
17189 ------------------------------------------
17190 Summary of changes for this label: 03_13_01
17192 ACPI CA Core Subsystem:
17194 During ACPI initialization, the _SB_._INI method is now run if
17197 Notify handler fix - notifies are deferred until the parent method
17198 completes execution. This fixes the "mutex already acquired"
17199 issue seen occasionally.
17201 Part of the "implicit conversion" rules in ACPI 2.0 have been
17202 found to cause compatibility problems with existing ASL/AML. The
17203 convert "result-to-target-type" implementation has been removed
17204 for stores to method Args and Locals. Source operand conversion
17205 is still fully implemented. Possible changes to ACPI 2.0
17206 specification pending.
17208 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
17211 Fix for compiler warnings for 64-bit compiles.
17215 /proc output aligned for easier parsing.
17217 Release-version compile problem fixed.
17219 New kernel configuration options documented in Configure.help.
17221 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
17226 Power resource driver integrated with bus manager.
17228 Fixed kernel fault during active cooling for thermal zones.
17232 The source code tree has been restructured.
17236 ------------------------------------------
17237 Summary of changes for this label: 03_02_01
17239 Linux OS Services Layer (OSL):
17241 Major revision of all Linux-specific code.
17243 Modularized all ACPI-specific drivers.
17245 Added new thermal zone and power resource drivers.
17247 Revamped /proc interface (new functionality is under /proc/acpi).
17249 New kernel configuration options.
17251 Linux known issues:
17253 New kernel configuration options not documented in Configure.help
17257 Module dependencies not currently implemented. If used, they
17258 should be loaded in this order: busmgr, power, ec, system,
17259 processor, battery, ac_adapter, button, thermal.
17261 Modules will not load if CONFIG_MODVERSION is set.
17263 IBM 600E - entering S5 may reboot instead of shutting down.
17265 IBM 600E - Sleep button may generate "Invalid <NULL> context"
17268 Some systems may fail with "execution mutex already acquired"
17271 ACPI CA Core Subsystem:
17273 Added a new OSL Interface, AcpiOsGetThreadId. This was required
17274 for the deadlock detection code. Defined to return a non-zero, 32-
17275 bit thread ID for the currently executing thread. May be a non-
17276 zero constant integer on single-thread systems.
17278 Implemented deadlock detection for internal subsystem mutexes. We
17279 may add conditional compilation for this code (debug only) later.
17281 ASL/AML Mutex object semantics are now fully supported. This
17282 includes multiple acquires/releases by owner and support for the
17284 Mutex SyncLevel parameter.
17286 A new "Force Release" mechanism automatically frees all ASL
17287 Mutexes that have been acquired but not released when a thread
17288 exits the interpreter. This forces conformance to the ACPI spec
17289 ("All mutexes must be released when an invocation exits") and
17290 prevents deadlocked ASL threads. This mechanism can be expanded
17291 (later) to monitor other resource acquisitions if OEM ASL code
17292 continues to misbehave (which it will).
17294 Several new ACPI exception codes have been added for the Mutex
17297 Recursive method calls are now allowed and supported (the ACPI
17298 spec does in fact allow recursive method calls.) The number of
17299 recursive calls is subject to the restrictions imposed by the
17300 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
17303 Implemented support for the SyncLevel parameter for control
17304 methods (ACPI 2.0 feature)
17306 Fixed a deadlock problem when multiple threads attempted to use
17309 Fixed a problem where the string length of a String package
17310 element was not always set in a package returned from
17311 AcpiEvaluateObject.
17313 Fixed a problem where the length of a String package element was
17314 not always included in the length of the overall package returned
17315 from AcpiEvaluateObject.
17317 Added external interfaces (Acpi*) to the ACPI debug memory
17318 manager. This manager keeps a list of all outstanding
17319 allocations, and can therefore detect memory leaks and attempts to
17320 free memory blocks more than once. Useful for code such as the
17321 power manager, etc. May not be appropriate for device drivers.
17322 Performance with the debug code enabled is slow.
17324 The ACPI Global Lock is now an optional hardware element.
17326 ASL Compiler Version X2015:
17328 Integrated changes to allow the compiler to be generated on
17329 multiple platforms.
17331 Linux makefile added to generate the compiler on Linux
17335 All platform-specific headers have been moved to their own
17336 subdirectory, Include/Platform.
17338 New source file added, Interpreter/ammutex.c
17340 New header file, Include/acstruct.h
17344 The programmer reference has been updated for the following new
17345 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
17347 ------------------------------------------
17348 Summary of changes for this label: 02_08_01
17350 Core ACPI CA Subsystem: Fixed a problem where an error was
17351 incorrectly returned if the return resource buffer was larger than
17352 the actual data (in the resource interfaces).
17354 References to named objects within packages are resolved to the
17356 full pathname string before packages are returned directly (via
17357 the AcpiEvaluateObject interface) or indirectly via the resource
17360 Linux OS Services Layer (OSL):
17362 Improved /proc battery interface.
17365 Added C-state debugging output and other miscellaneous fixes.
17367 ASL Compiler Version X2014:
17369 All defined method arguments can now be used as local variables,
17370 including the ones that are not actually passed in as parameters.
17371 The compiler tracks initialization of the arguments and issues an
17372 exception if they are used without prior assignment (just like
17375 The -o option now specifies a filename prefix that is used for all
17376 output files, including the AML output file. Otherwise, the
17377 default behavior is as follows: 1) the AML goes to the file
17378 specified in the DSDT. 2) all other output files use the input
17379 source filename as the base.
17381 ------------------------------------------
17382 Summary of changes for this label: 01_25_01
17384 Core ACPI CA Subsystem: Restructured the implementation of object
17385 store support within the interpreter. This includes support for
17386 the Store operator as well as any ASL operators that include a
17389 Partially implemented support for Implicit Result-to-Target
17390 conversion. This is when a result object is converted on the fly
17391 to the type of an existing target object. Completion of this
17392 support is pending further analysis of the ACPI specification
17393 concerning this matter.
17395 CPU-specific code has been removed from the subsystem (hardware
17398 New Power Management Timer functions added
17400 Linux OS Services Layer (OSL): Moved system state transition code
17401 to the core, fixed it, and modified Linux OSL accordingly.
17403 Fixed C2 and C3 latency calculations.
17406 We no longer use the compilation date for the version message on
17407 initialization, but retrieve the version from AcpiGetSystemInfo().
17409 Incorporated for fix Sony VAIO machines.
17411 Documentation: The Programmer Reference has been updated and
17415 ASL Compiler: Version X2013: Fixed a problem where the line
17416 numbering and error reporting could get out of sync in the
17417 presence of multiple include files.
17419 ------------------------------------------
17420 Summary of changes for this label: 01_15_01
17422 Core ACPI CA Subsystem:
17424 Implemented support for type conversions in the execution of the
17425 ASL Concatenate operator (The second operand is converted to
17426 match the type of the first operand before concatenation.)
17428 Support for implicit source operand conversion is partially
17429 implemented. The ASL source operand types Integer, Buffer, and
17430 String are freely interchangeable for most ASL operators and are
17431 converted by the interpreter on the fly as required. Implicit
17432 Target operand conversion (where the result is converted to the
17433 target type before storing) is not yet implemented.
17435 Support for 32-bit and 64-bit BCD integers is implemented.
17437 Problem fixed where a field read on an aligned field could cause a
17438 read past the end of the field.
17440 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
17441 does not return a value, but the caller expects one. (The ASL
17442 compiler flags this as a warning.)
17447 1. Static typechecking of all operands is implemented. This
17448 prevents the use of invalid objects (such as using a Package where
17449 an Integer is required) at compile time instead of at interpreter
17451 2. The ASL source line is printed with ALL errors and warnings.
17452 3. Bug fix for source EOF without final linefeed.
17453 4. Debug option is split into a parse trace and a namespace trace.
17454 5. Namespace output option (-n) includes initial values for
17455 integers and strings.
17456 6. Parse-only option added for quick syntax checking.
17457 7. Compiler checks for duplicate ACPI name declarations
17460 1. Relaxed typechecking to allow interchangeability between
17461 strings, integers, and buffers. These types are now converted by
17462 the interpreter at runtime.
17463 2. Compiler reports time taken by each internal subsystem in the
17467 ------------------------------------------
17468 Summary of changes for this label: 12_14_00
17472 This is the first official release of the compiler. Since the
17473 compiler requires elements of the Core Subsystem, this label
17474 synchronizes everything.
17476 ------------------------------------------
17477 Summary of changes for this label: 12_08_00
17480 Fixed a problem where named references within the ASL definition
17481 of both OperationRegions and CreateXXXFields did not work
17482 properly. The symptom was an AE_AML_OPERAND_TYPE during
17483 initialization of the region/field. This is similar (but not
17484 related internally) to the problem that was fixed in the last
17487 Implemented both 32-bit and 64-bit support for the BCD ASL
17488 functions ToBCD and FromBCD.
17490 Updated all legal headers to include "2000" in the copyright
17493 ------------------------------------------
17494 Summary of changes for this label: 12_01_00
17496 Fixed a problem where method invocations within the ASL definition
17497 of both OperationRegions and CreateXXXFields did not work
17498 properly. The symptom was an AE_AML_OPERAND_TYPE during
17499 initialization of the region/field:
17501 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17502 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17505 Fixed a problem where operators with more than one nested
17506 subexpression would fail. The symptoms were varied, by mostly
17507 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17508 problem that has gone unnoticed until now.
17510 Subtract (Add (1,2), Multiply (3,4))
17512 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17513 previous build (The prefix part of a relative path was handled
17516 Fixed a problem where Operation Region initialization failed if
17517 the operation region name was a "namepath" instead of a simple
17518 "nameseg". Symptom was an AE_NO_OPERAND error.
17520 Fixed a problem where an assignment to a local variable via the
17521 indirect RefOf mechanism only worked for the first such
17522 assignment. Subsequent assignments were ignored.
17524 ------------------------------------------
17525 Summary of changes for this label: 11_15_00
17527 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17528 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17529 the AML interpreter does NOT have support for the new 2.0 ASL
17530 grammar terms at this time.
17532 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17535 All physical memory addresses across all platforms are now 64 bits
17536 wide. Logical address width remains dependent on the platform
17539 AcpiOsMapMemory interface changed to a 64-bit physical address.
17541 The AML interpreter integer size is now 64 bits, as per the ACPI
17544 For backwards compatibility with ACPI 1.0, ACPI tables with a
17545 revision number less than 2 use 32-bit integers only.
17547 Fixed a problem where the evaluation of OpRegion operands did not
17548 always resolve them to numbers properly.
17550 ------------------------------------------
17551 Summary of changes for this label: 10_20_00
17553 Fix for CBN_._STA issue. This fix will allow correct access to
17554 CBN_ OpRegions when the _STA returns 0x8.
17556 Support to convert ACPI constants (Ones, Zeros, One) to actual
17557 values before a package object is returned
17559 Fix for method call as predicate to if/while construct causing
17560 incorrect if/while behavior
17562 Fix for Else block package lengths sometimes calculated wrong (if
17565 Fix for Processor object length field, was always zero
17567 Table load abort if FACP sanity check fails
17569 Fix for problem with Scope(name) if name already exists
17571 Warning emitted if a named object referenced cannot be found
17572 (resolved) during method execution.
17578 ------------------------------------------
17579 Summary of changes for this label: 9_29_00
17581 New table initialization interfaces: AcpiInitializeSubsystem no
17582 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17583 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17584 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17587 Note: These interface changes require changes to all existing OSDs
17589 The PCI_Config default address space handler is always installed
17590 at the root namespace object.
17592 -------------------------------------------
17593 Summary of changes for this label: 09_15_00
17595 The new initialization architecture is implemented. New
17596 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17597 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17599 (Namespace is automatically loaded when a table is loaded)
17601 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17602 52 bytes to 32 bytes. There is usually one of these for every
17603 namespace object, so the memory savings is significant.
17605 Implemented just-in-time evaluation of the CreateField operators.
17607 Bug fixes for IA-64 support have been integrated.
17609 Additional code review comments have been implemented
17611 The so-called "third pass parse" has been replaced by a final walk
17612 through the namespace to initialize all operation regions (address
17613 spaces) and fields that have not yet been initialized during the
17614 execution of the various _INI and REG methods.
17616 New file - namespace/nsinit.c
17618 -------------------------------------------
17619 Summary of changes for this label: 09_01_00
17621 Namespace manager data structures have been reworked to change the
17622 primary object from a table to a single object. This has
17623 resulted in dynamic memory savings of 3X within the namespace and
17624 2X overall in the ACPI CA subsystem.
17626 Fixed problem where the call to AcpiEvFindPciRootBuses was
17627 inadvertently left commented out.
17629 Reduced the warning count when generating the source with the GCC
17632 Revision numbers added to each module header showing the
17633 SourceSafe version of the file. Please refer to this version
17634 number when giving us feedback or comments on individual modules.
17636 The main object types within the subsystem have been renamed to
17637 clarify their purpose:
17639 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17640 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17641 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17643 NOTE: no changes to the initialization sequence are included in
17646 -------------------------------------------
17647 Summary of changes for this label: 08_23_00
17649 Fixed problem where TerminateControlMethod was being called
17650 multiple times per method
17652 Fixed debugger problem where single stepping caused a semaphore to
17655 Improved performance through additional parse object caching -
17656 added ACPI_EXTENDED_OP type
17658 -------------------------------------------
17659 Summary of changes for this label: 08_10_00
17661 Parser/Interpreter integration: Eliminated the creation of
17662 complete parse trees for ACPI tables and control methods.
17663 Instead, parse subtrees are created and then deleted as soon as
17664 they are processed (Either entered into the namespace or executed
17665 by the interpreter). This reduces the use of dynamic kernel
17666 memory significantly. (about 10X)
17668 Exception codes broken into classes and renumbered. Be sure to
17669 recompile all code that includes acexcep.h. Hopefully we won't
17670 have to renumber the codes again now that they are split into
17671 classes (environment, programmer, AML code, ACPI table, and
17674 Fixed some additional alignment issues in the Resource Manager
17677 Implemented semaphore tracking in the AcpiExec utility, and fixed
17678 several places where mutexes/semaphores were being unlocked
17679 without a corresponding lock operation. There are no known
17680 semaphore or mutex "leaks" at this time.
17682 Fixed the case where an ASL Return operator is used to return an
17685 -------------------------------------------
17686 Summary of changes for this label: 07_28_00
17688 Fixed a problem with the way addresses were calculated in
17689 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17690 manifested itself when a Field was created with WordAccess or
17691 DwordAccess, but the field unit defined within the Field was less
17693 than a Word or Dword.
17695 Fixed a problem in AmlDumpOperands() module's loop to pull
17696 operands off of the operand stack to display information. The
17697 problem manifested itself as a TLB error on 64-bit systems when
17698 accessing an operand stack with two or more operands.
17700 Fixed a problem with the PCI configuration space handlers where
17701 context was getting confused between accesses. This required a
17702 change to the generic address space handler and address space
17703 setup definitions. Handlers now get both a global handler context
17704 (this is the one passed in by the user when executing
17705 AcpiInstallAddressSpaceHandler() and a specific region context
17706 that is unique to each region (For example, the _ADR, _SEG and
17707 _BBN values associated with a specific region). The generic
17708 function definitions have changed to the following:
17710 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17711 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17712 *HandlerContext, // This used to be void *Context void
17713 *RegionContext); // This is an additional parameter
17715 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17716 RegionHandle, UINT32 Function, void *HandlerContext, void
17717 **RegionContext); // This used to be **ReturnContext
17719 -------------------------------------------
17720 Summary of changes for this label: 07_21_00
17722 Major file consolidation and rename. All files within the
17723 interpreter have been renamed as well as most header files. This
17724 was done to prevent collisions with existing files in the host
17725 OSs -- filenames such as "config.h" and "global.h" seem to be
17726 quite common. The VC project files have been updated. All
17727 makefiles will require modification.
17729 The parser/interpreter integration continues in Phase 5 with the
17730 implementation of a complete 2-pass parse (the AML is parsed
17731 twice) for each table; This avoids the construction of a huge
17732 parse tree and therefore reduces the amount of dynamic memory
17733 required by the subsystem. Greater use of the parse object cache
17734 means that performance is unaffected.
17736 Many comments from the two code reviews have been rolled in.
17738 The 64-bit alignment support is complete.
17740 -------------------------------------------
17741 Summary of changes for this label: 06_30_00
17743 With a nod and a tip of the hat to the technology of yesteryear,
17744 we've added support in the source code for 80 column output
17745 devices. The code is now mostly constrained to 80 columns or
17746 less to support environments and editors that 1) cannot display
17747 or print more than 80 characters on a single line, and 2) cannot
17748 disable line wrapping.
17750 A major restructuring of the namespace data structure has been
17751 completed. The result is 1) cleaner and more
17752 understandable/maintainable code, and 2) a significant reduction
17753 in the dynamic memory requirement for each named ACPI object
17756 -------------------------------------------
17757 Summary of changes for this label: 06_23_00
17759 Linux support has been added. In order to obtain approval to get
17760 the ACPI CA subsystem into the Linux kernel, we've had to make
17761 quite a few changes to the base subsystem that will affect all
17762 users (all the changes are generic and OS- independent). The
17763 effects of these global changes have been somewhat far reaching.
17764 Files have been merged and/or renamed and interfaces have been
17765 renamed. The major changes are described below.
17767 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17768 pollution/confusion within our target kernels. All OSD
17769 interfaces must be modified to match the new naming convention.
17771 Files merged across the subsystem. A number of the smaller source
17772 and header files have been merged to reduce the file count and
17773 increase the density of the existing files. There are too many
17774 to list here. In general, makefiles that call out individual
17775 files will require rebuilding.
17777 Interpreter files renamed. All interpreter files now have the
17778 prefix am* instead of ie* and is*.
17780 Header files renamed: The acapi.h file is now acpixf.h. The
17781 acpiosd.h file is now acpiosxf.h. We are removing references to
17782 the acronym "API" since it is somewhat windowsy. The new name is
17783 "external interface" or xface or xf in the filenames.j
17786 All manifest constants have been forced to upper case (some were
17787 mixed case.) Also, the string "ACPI_" has been prepended to many
17788 (not all) of the constants, typedefs, and structs.
17790 The globals "DebugLevel" and "DebugLayer" have been renamed
17791 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17793 All other globals within the subsystem are now prefixed with
17794 "AcpiGbl_" Internal procedures within the subsystem are now
17795 prefixed with "Acpi" (with only a few exceptions). The original
17796 two-letter abbreviation for the subcomponent remains after "Acpi"
17797 - for example, CmCallocate became AcpiCmCallocate.
17799 Added a source code translation/conversion utility. Used to
17800 generate the Linux source code, it can be modified to generate
17801 other types of source as well. Can also be used to cleanup
17802 existing source by removing extraneous spaces and blank lines.
17803 Found in tools/acpisrc/*
17805 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17806 AcpiOsUnmapMemory. (UnMap became Unmap).
17808 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17809 When set to one, this indicates that the caller wants to use the
17811 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17812 both types. However, implementers of this call may want to use
17813 different OS primitives depending on the type of semaphore
17814 requested. For example, some operating systems provide separate
17816 "mutex" and "semaphore" interfaces - where the mutex interface is
17817 much faster because it doesn't have all the overhead of a full
17818 semaphore implementation.
17820 Fixed a deadlock problem where a method that accesses the PCI
17821 address space can block forever if it is the first access to the
17824 -------------------------------------------
17825 Summary of changes for this label: 06_02_00
17827 Support for environments that cannot handle unaligned data
17828 accesses (e.g. firmware and OS environments devoid of alignment
17829 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17830 been added (via configurable macros) in these three areas: -
17831 Transfer of data from the raw AML byte stream is done via byte
17832 moves instead of word/dword/qword moves. - External objects are
17833 aligned within the user buffer, including package elements (sub-
17834 objects). - Conversion of name strings to UINT32 Acpi Names is now
17837 The Store operator was modified to mimic Microsoft's
17838 implementation when storing to a Buffer Field.
17840 Added a check of the BM_STS bit before entering C3.
17842 The methods subdirectory has been obsoleted and removed. A new
17843 file, cmeval.c subsumes the functionality.
17845 A 16-bit (DOS) version of AcpiExec has been developed. The
17846 makefile is under the acpiexec directory.