1 ----------------------------------------
2 28 July 2017. Summary of changes for version 20170728:
5 1) ACPICA kernel-resident subsystem:
7 Fixed a regression seen with small resource descriptors that could cause
8 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
10 AML interpreter: Implemented a new feature that allows forward references
11 from individual named references within package objects that are
12 contained within blocks of "module-level code". This provides
13 compatibility with other ACPI implementations and supports existing
14 firmware that depends on this feature. Example:
17 If (ABCD) /* An If() at module-level */
21 INT1 /* Forward reference to object INT1
27 AML Interpreter: Fixed a problem with the Alias() operator where aliases
28 to some ASL objects were not handled properly. Objects affected are:
29 Mutex, Event, and OperationRegion.
31 AML Debugger: Enhanced to properly handle AML Alias objects. These
32 objects have one level of indirection which was not fully supported by
35 Table Manager: Added support to detect and ignore duplicate SSDTs within
36 the XSDT/RSDT. This error in the XSDT has been seen in the field.
39 Enabled /WX flag for MSVC builds
40 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
41 Added local support for 64-bit multiply and shift operations
42 Added support to compile acpidump.efi on Windows
43 Added OSL function stubs for interfaces not used under EFI
45 Added additional support for the _DMA predefined name. _DMA returns a
46 buffer containing a resource template. This change add support within the
47 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
48 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
51 2) iASL Compiler/Disassembler and Tools:
53 iASL: Fixed a problem where the internal input line buffer(s) could
54 overflow if there are very long lines in the input ASL source code file.
55 Implemented buffer management that automatically increases the size of
56 the buffers as necessary.
58 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
59 errors. If the specified exception is not raised during compilation, the
60 compiler emits an error. This is intended to support the ASL test suite,
61 but may be useful in other contexts.
63 iASL: Implemented a new predefined macro, __METHOD__, which returns a
64 string containing the name of the current control method that is being
67 iASL: Implemented debugger and table compiler support for the SDEI ACPI
68 table (Software Delegated Exception Interface). James Morse
71 Unix/Linux makefiles: Added an option to disable compile optimizations.
72 The disable occurs when the NOOPT flag is set to TRUE.
73 theracermaster@gmail.com
75 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
76 when there are different tables for 32-bit versus 64-bit.
78 Enhanced error reporting for the ASL test suite (ASLTS) by removing
79 unnecessary/verbose text, and emit the actual line number where an error
80 has occurred. These changes are intended to improve the usefulness of the
83 ----------------------------------------
84 29 June 2017. Summary of changes for version 20170629:
87 1) ACPICA kernel-resident subsystem:
89 Tables: Implemented a deferred ACPI table verification. This is useful
90 for operating systems where the tables cannot be verified in the early
91 initialization stage due to early memory mapping limitations on some
92 architectures. Lv Zheng.
94 Tables: Removed the signature validation for dynamically loaded tables.
95 Provides compatibility with other ACPI implementations. Previously, only
96 SSDT tables were allowed, as per the ACPI specification. Now, any table
97 signature can be used via the Load() operator. Lv Zheng.
99 Tables: Fixed several mutex issues that could cause errors during table
100 acquisition. Lv Zheng.
102 Tables: Fixed a problem where an ACPI warning could be generated if a
103 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
105 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
106 AcpiPutTable interfaces. This applies to the "late stage" table loading
107 when the use of AcpiPutTable is no longer required (since the system
108 memory manager is fully running and available). Lv Zheng.
110 Fixed/Reverted a regression during processing of resource descriptors
111 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
112 exception in this case.
114 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
115 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
117 Interpreter: Fixed a possible fault if an Alias operator with an invalid
118 or duplicate target is encountered during Alias creation in
119 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
121 Added an option to use designated initializers for function pointers.
122 Kees Cook <keescook@google.com>
125 2) iASL Compiler/Disassembler and Tools:
127 iASL: Allow compilation of External declarations with target pathnames
128 that refer to existing named objects within the table. Erik Schmauss.
130 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
131 FieldUnit name also is declared via External in the same table. Erik
134 iASL: Allow existing scope names within pathnames used in External
135 statements. For example:
136 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
139 iASL: IORT ACPI table: Implemented changes required to decode the new
140 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
141 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
143 Disassembler: Don't abort disassembly on errors from External()
144 statements. Erik Schmauss.
146 Disassembler: fixed a possible fault when one of the Create*Field
147 operators references a Resource Template. ACPICA Bugzilla 1396.
149 iASL: In the source code, resolved some naming inconsistences across the
150 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
151 Adds a new file, aslparseop.c
153 ----------------------------------------
154 31 May 2017. Summary of changes for version 20170531:
159 The ACPI specification version 6.2 has been released and is available at
160 http://uefi.org/specifications
162 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
163 are summarized below.
165 New ACPI tables (Table Compiler/Disassembler/Templates):
166 HMAT (Heterogeneous Memory Attributes Table)
167 WSMT (Windows SMM Security Mitigation Table)
168 PPTT (Processor Properties Topology Table)
170 New subtables for existing ACPI tables:
171 HEST (New subtable, Arch-deferred machine check)
172 SRAT (New subtable, Arch-specific affinity structure)
173 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
175 Simple updates for existing ACPI tables:
176 BGRT (two new flag bits)
177 HEST (New bit defined for several subtables, GHES_ASSIST)
179 New Resource Descriptors and Resource macros (Compiler/Disassembler):
185 New type for hardware error notification (section 18.3.2.9)
187 New predefined names/methods (Compiler/Interpreter):
188 _HMA (Heterogeneous Memory Attributes)
189 _LSI (Label Storage Information)
190 _LSR (Label Storage Read)
191 _LSW (Label Storage Write)
193 ASL grammar/macro changes (Compiler):
194 For() ASL macro, implemented with the AML while operator
195 Extensions to Concatenate operator
196 Support for multiple definition blocks in same ASL file
197 Clarification for Buffer operator
198 Allow executable AML code underneath all scopes (Devices, etc.)
199 Clarification/change for the _OSI return value
200 ASL grammar update for reference operators
201 Allow a zero-length string for AML filename in DefinitionBlock
204 New device object notification value
205 Remove a notify value (0x0C) for graceful shutdown
206 New UUIDs for processor/cache properties and
207 physical package property
208 New _HID, ACPI0014 (Wireless Power Calibration Device)
211 1) ACPICA kernel-resident subsystem:
213 Added support to disable ACPI events on hardware-reduced platforms.
214 Eliminates error messages of the form "Could not enable fixed event". Lv
217 Fixed a problem using Device/Thermal objects with the ObjectType and
218 DerefOf ASL operators. This support had not been fully/properly
221 Fixed a problem where if a Buffer object containing a resource template
222 was longer than the actual resource template, an error was generated --
223 even though the AML is legal. This case has been seen in the field.
225 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
226 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
228 Added header file changes for the TPM2 ACPI table. Update to new version
229 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
231 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
232 These interfaces are intended to be used only in conjunction with the
233 predefined _DLM method (Device Lock Method). "This object appears in a
234 device scope when AML access to the device must be synchronized with the
237 Example Code and Data Size: These are the sizes for the OS-independent
238 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
239 debug version of the code includes the debug output trace mechanism and
240 has a much larger code and data size.
243 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
244 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
246 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
247 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
250 2) iASL Compiler/Disassembler and Tools:
252 iASL: Fixed a problem where an External() declaration could not refer to
253 a Field Unit. Erik Schmauss.
255 Disassembler: Improved support for the Switch/Case operators. This
256 feature will disassemble AML code back to the original Switch operators
257 when possible, instead of an If..Else sequence. David Box
259 iASL and disassembler: Improved the handling of multiple extraneous
260 parentheses for both ASL input and disassembled ASL output.
262 Improved the behavior of the iASL compiler and disassembler to detect
263 improper use of external declarations
265 Disassembler: Now aborts immediately upon detection of an unknown AML
266 opcode. The AML parser has no real way to recover from this, and can
267 result in the creation of an ill-formed parse tree that causes errors
268 later during the disassembly.
270 All tools: Fixed a problem where the Unix application OSL did not handle
271 control-c correctly. For example, a control-c could incorrectly wake the
274 AcpiExec: Improved the Control-C handling and added a handler for
275 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
278 Reduced the verbosity of the generic unix makefiles. Previously, each
279 compilation displayed the full set of compiler options. This has been
280 eliminated as the options are easily inspected within the makefiles. Each
281 compilation now results in a single line of output.
283 ----------------------------------------
284 03 March 2017. Summary of changes for version 20170303:
289 The licensing information at the start of each source code module has
290 been updated. In addition to the Intel license, the dual GPLv2/BSD
291 license has been added for completeness. Now, a single version of the
292 source code should be suitable for all ACPICA customers. This is the
293 major change for this release since it affects all source code modules.
296 1) ACPICA kernel-resident subsystem:
298 Fixed two issues with the common asltypes.h header that could cause
299 problems in some environments: (Kim Jung-uk)
300 Removed typedef for YY_BUFFER_STATE ?
301 Fixes an error with earlier versions of Flex.
302 Removed use of FILE typedef (which is only defined in stdio.h)
305 2) iASL Compiler/Disassembler and Tools:
307 Disassembler: fixed a regression introduced in 20170224. A fix for a
308 memory leak related to resource descriptor tags (names) could fault when
309 the disassembler was generated with 64-bit compilers.
311 The ASLTS test suite has been updated to implement a new testing
312 architecture. During generation of the suite from ASL source, both the
313 ASL and ASL+ compilers are now validated, as well as the disassembler
314 itself (Erik Schmauss). The architecture executes as follows:
316 For every ASL source module:
317 Compile (legacy ASL compilation)
318 Disassemble the resulting AML to ASL+ source code
319 Compile the new ASL+ module
320 Perform a binary compare on the legacy AML and the new ASL+ AML
321 The ASLTS suite then executes normally using the AML binaries.
323 ----------------------------------------
324 24 February 2017. Summary of changes for version 20170224:
327 1) ACPICA kernel-resident subsystem:
329 Interpreter: Fixed two issues with the control method return value auto-
330 repair feature, where an attempt to double-delete an internal object
331 could result in an ACPICA warning (for _CID repair and others). No fault
332 occurs, however, because the attempted deletion (actually a release to an
333 internal cache) is detected and ignored via object poisoning.
335 Debugger: Fixed an AML interpreter mutex issue during the single stepping
336 of control methods. If certain debugger commands are executed during
337 stepping, a mutex aquire/release error could occur. Lv Zheng.
339 Fixed some issues generating ACPICA with the Intel C compiler by
340 restoring the original behavior and compiler-specific include file in
343 Example Code and Data Size: These are the sizes for the OS-independent
344 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
345 debug version of the code includes the debug output trace mechanism and
346 has a much larger code and data size.
349 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
350 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
352 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
353 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
356 2) iASL Compiler/Disassembler and Tools:
358 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
359 tool has been designed, implemented, and included in this release. The
360 key feature of this utility is that the original comments within the
361 input ASL file are preserved during the conversion process, and included
362 within the converted ASL+ file -- thus creating a transparent conversion
363 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
365 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
368 iASL/Disassembler: Improved the detection and correct disassembly of
369 Switch/Case operators. This feature detects sequences of if/elseif/else
370 operators that originated from ASL Switch/Case/Default operators and
371 emits the original operators. David Box.
373 iASL: Improved the IORT ACPI table support in the following areas. Lv
375 Clear MappingOffset if the MappingCount is zero.
376 Fix the disassembly of the SMMU GSU interrupt offset.
377 Update the template file for the IORT table.
379 Disassembler: Enhanced the detection and disassembly of resource
380 template/descriptor within a Buffer object. An EndTag descriptor is now
381 required to have a zero second byte, since all known ASL compilers emit
382 this. This helps eliminate incorrect decisions when a buffer is
383 disassembled (false positives on resource templates).
385 ----------------------------------------
386 19 January 2017. Summary of changes for version 20170119:
389 1) General ACPICA software:
391 Entire source code base: Added the 2017 copyright to all source code
392 legal/licensing module headers and utility/tool signons. This includes
393 the standard Linux dual-license header. This affects virtually every file
394 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
395 the ACPICA test suite.
398 2) iASL Compiler/Disassembler and Tools:
400 iASL: Removed/fixed an inadvertent remark when a method argument
401 containing a reference is used as a target operand within the method (and
402 never used as a simple argument), as in the example below. Jeffrey Hugo.
404 dsdt.asl 1507: Store(0x1, Arg0)
405 Remark 2146 - ^ Method Argument is never used (Arg0)
407 All tools: Removed the bit width of the compiler that generated the tool
408 from the common signon for all user space tools. This proved to be
409 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
410 from the generic makefiles (Thomas Petazzoni). Example below.
413 ASL+ Optimizing Compiler version 20170119-32
414 ASL+ Optimizing Compiler version 20170119-64
417 ASL+ Optimizing Compiler version 20170119
419 ----------------------------------------
420 22 December 2016. Summary of changes for version 20161222:
423 1) ACPICA kernel-resident subsystem:
425 AML Debugger: Implemented a new mechanism to simplify and enhance
426 debugger integration into all environments, including kernel debuggers
427 and user-space utilities, as well as remote debug services. This
428 mechanism essentially consists of new OSL interfaces to support debugger
429 initialization/termination, as well as wait/notify interfaces to perform
430 the debugger handshake with the host. Lv Zheng.
433 AcpiOsInitializeDebugger (void)
434 AcpiOsTerminateDebugger (void)
435 AcpiOsWaitCommandReady (void)
436 AcpiOsNotifyCommandComplete (void)
438 New OS services layer:
439 osgendbg.c -- Example implementation, and used for AcpiExec
441 Update for Generic Address Space (GAS) support: Although the AccessWidth
442 and/or BitOffset fields of the GAS are not often used, this change now
443 fully supports these fields. This affects the internal support for FADT
444 registers, registers in other ACPI data tables, and the AcpiRead and
445 AcpiWrite public interfaces. Lv Zheng.
447 Sleep support: In order to simplify integration of ACPI sleep for the
448 various host operating systems, a new OSL interface has been introduced.
449 AcpiOsEnterSleep allows the host to perform any required operations
450 before the final write to the sleep control register(s) is performed by
454 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
456 Called from these internal interfaces:
460 EFI support: Added a very small EFI/ACPICA example application. Provides
461 a simple demo for EFI integration, as well as assisting with resolution
462 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
464 source/tools/efihello/efihello.c
466 Local C library: Implemented several new functions to enhance ACPICA
467 portability, for environments where these clib functions are not
468 available (such as EFI). Lv Zheng:
475 Fixed a regression where occasionally a valid resource descriptor was
476 incorrectly detected as invalid at runtime, and a
477 AE_AML_NO_RESOURCE_END_TAG was returned.
479 Fixed a problem with the recently implemented support that enables
480 control method invocations as Target operands to many ASL operators.
481 Warnings of this form: "Needed type [Reference], found [Processor]" were
482 seen at runtime for some method invocations.
484 Example Code and Data Size: These are the sizes for the OS-independent
485 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
486 debug version of the code includes the debug output trace mechanism and
487 has a much larger code and data size.
490 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
491 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
493 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
494 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
497 2) iASL Compiler/Disassembler and Tools:
499 Disassembler: Enhanced output by adding the capability to detect and
500 disassemble ASL Switch/Case statements back to the original ASL source
501 code instead of if/else blocks. David Box.
503 AcpiHelp: Split a large file into separate files based upon
504 functionality/purpose. New files are:
508 ----------------------------------------
509 17 November 2016. Summary of changes for version 20161117:
512 1) ACPICA kernel-resident subsystem:
514 Table Manager: Fixed a regression introduced in 20160729, "FADT support
515 cleanup". This was an attempt to remove all references in the source to
516 the FADT version 2, which never was a legal version number. It was
517 skipped because it was an early version of 64-bit support that was
518 eventually abandoned for the current 64-bit support.
520 Interpreter: Fixed a problem where runtime implicit conversion was
521 incorrectly disabled for the ASL operators below. This brings the
522 behavior into compliance with the ACPI specification:
530 Table Manager: Added a new public interface, AcpiPutTable, used to
531 release and free an ACPI table returned by AcpiGetTable and related
532 interfaces. Lv Zheng.
534 Example Code and Data Size: These are the sizes for the OS-independent
535 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
536 debug version of the code includes the debug output trace mechanism and
537 has a much larger code and data size.
540 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
541 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
543 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
544 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
547 2) iASL Compiler/Disassembler and Tools:
549 Disassembler: Fixed a regression for disassembly of Resource Template.
550 Detection of templates in the AML stream missed some types of templates.
552 iASL: Fixed a problem where an Access Size error was returned for the PCC
553 address space when the AccessSize of the GAS register is greater than a
556 iASL: Implemented several grammar changes for the operators below. These
557 changes are slated for the next version of the ACPI specification:
558 RefOf - Disallow method invocation as an operand
559 CondRefOf - Disallow method invocation as an operand
560 DerefOf - Disallow operands that use the result from operators
562 do not return a reference (Changed TermArg to
565 iASL: Control method invocations are now allowed for Target operands, as
566 per the ACPI specification. Removed error for using a control method
567 invocation as a Target operand.
569 Disassembler: Improved detection of Resource Templates, Unicode, and
570 Strings within Buffer objects. These subtypes do not contain a specific
571 opcode to indicate the originating ASL code, and they must be detected by
572 other means within the disassembler.
574 iASL: Implemented an optimization improvement for 32-bit ACPI tables
575 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
576 only after 64-bit to 32-bit truncation. A truncation warning message is
577 still emitted, however.
579 AcpiXtract: Implemented handling for both types of line terminators (LF
580 or CR/LF) so that it can accept AcpiDump output files from any system.
583 AcpiBin: Added two new options for comparing AML files:
584 -a: compare and display ALL mismatches
585 -o: start compare at this offset into the second file
587 ----------------------------------------
588 30 September 2016. Summary of changes for version 20160930:
591 1) ACPICA kernel-resident subsystem:
593 Fixed a regression in the internal AcpiTbFindTable function where a non
594 AE_OK exception could inadvertently be returned even if the function did
595 not fail. This problem affects the following operators:
599 Fixed a regression in the LoadTable operator where a load to any
600 namespace location other than the root no longer worked properly.
602 Increased the maximum loop count value that will result in the
603 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
604 prevent infinite loops within the AML interpreter and thus the host OS
605 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
608 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
609 acpixf.h file. This allows hosts to easily configure the maximum loop
612 Removed an illegal character in the strtoul64.c file. This character
613 caused errors with some C compilers.
615 Example Code and Data Size: These are the sizes for the OS-independent
616 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
617 debug version of the code includes the debug output trace mechanism and
618 has a much larger code and data size.
621 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
622 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
624 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
625 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
628 2) iASL Compiler/Disassembler and Tools:
630 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
631 the simpler ASL ElseIf keyword. During the conversion, a trailing If
632 block could be lost and missing from the disassembled output.
634 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
635 the missing rule caused a parse error when using the Index operator as an
636 operand to ObjectType. This construct now compiles properly. Example:
639 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
640 option). Previously, unresolved symbols could cause a protection fault.
641 Such symbols are now marked as unresolved in the map file.
643 iASL: Implemented support to allow control method invocations as an
644 operand to the ASL DeRefOf operator. Example:
645 DeRefOf(MTH1(Local0))
647 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
648 possible _PLD buffer now includes examination of both the normal buffer
649 length (16 or 20) as well as the surrounding AML package length.
651 Disassembler: Fixed a problem with the decoding of complex expressions
652 within the Divide operator for ASL+. For the case where both the quotient
653 and remainder targets are specified, the entire statement cannot be
654 disassembled. Previously, the output incorrectly contained a mix of ASL-
655 and ASL+ operators. This mixed statement causes a syntax error when
657 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
659 Divide (INT1 + 6, 128, RSLT, QUOT)
661 iASL/Tools: Added support to process AML and non-AML ACPI tables
662 consistently. For the disassembler and AcpiExec, allow all types of ACPI
663 tables (AML and data tables). For the iASL -e option, allow only AML
666 ----------------------------------------
667 31 August 2016. Summary of changes for version 20160831:
670 1) ACPICA kernel-resident subsystem:
672 Improve support for the so-called "module-level code", which is defined
673 to be math, logical and control AML opcodes that appear outside of any
674 control method. This change improves the support by adding more opcodes
675 that can be executed in the manner. Some other issues have been solved,
676 and the ASL grammar changes to support such code under all scope
677 operators (Device, etc.) are complete. Lv Zheng.
679 UEFI support: these OSL functions have been implemented. This is an
680 additional step toward supporting the AcpiExec utility natively (with
681 full hardware access) under UEFI. Marcelo Ferreira.
682 AcpiOsReadPciConfiguration
683 AcpiOsWritePciConfiguration
685 Fixed a possible mutex error during control method auto-serialization. Lv
688 Updated support for the Generic Address Structure by fully implementing
689 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
692 Updated the return value for the internal _OSI method. Instead of
693 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
694 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
695 implementations, and will be reflected and clarified in the next version
696 of the ACPI specification.
698 Implemented two new table events that can be passed to an ACPICA table
699 handler. These events are used to indicate a table installation or
700 uninstallation. These events are used in addition to existed table load
701 and unload events. Lv Zheng.
703 Implemented a cleanup for all internal string-to-integer conversions.
704 Consolidate multiple versions of this functionality and limit possible
705 bases to either 10 or 16 to simplify the code. Adds a new file,
708 Cleanup the inclusion order of the various compiler-specific headers.
709 This simplifies build configuration management. The compiler-specific
710 headers are now split out from the host-specific headers. Lv Zheng.
712 Example Code and Data Size: These are the sizes for the OS-independent
713 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
714 debug version of the code includes the debug output trace mechanism and
715 has a much larger code and data size.
718 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
719 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
722 2) iASL Compiler/Disassembler and Tools:
724 iASL/AcpiExec: Added a command line option to display the build date/time
725 of the tool (-vd). This can be useful to verify that the correct version
726 of the tools are being used.
728 AML Debugger: Implemented a new subcommand ("execute predef") to execute
729 all predefined control methods and names within the current namespace.
730 This can be useful for debugging problems with ACPI tables and the ACPI
733 ----------------------------------------
734 29 July 2016. Summary of changes for version 20160729:
737 1) ACPICA kernel-resident subsystem:
739 Implemented basic UEFI support for the various ACPICA tools. This
741 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
742 2) Support to obtain the ACPI tables on UEFI.
743 3) Local implementation of required C library functions not available on
745 4) A front-end (main) function for the tools for UEFI-related
748 The initial deployment of this support is the AcpiDump utility executing
749 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
750 Current environments supported are Linux/Unix. MSVC generation is not
751 supported at this time. See the generate/efi/README file for build
752 instructions. Lv Zheng.
754 Future plans include porting the AcpiExec utility to execute natively on
755 the platform with I/O and memory access. This will allow viewing/dump of
756 the platform namespace and native execution of ACPI control methods that
757 access the actual hardware. To fully implement this support, the OSL
758 functions below must be implemented with UEFI interfaces. Any community
759 help in the implementation of these functions would be appreciated:
764 AcpiOsReadPciConfiguration
765 AcpiOsWritePciConfiguration
767 Restructured and standardized the C library configuration for ACPICA,
768 resulting in the various configuration options below. This includes a
769 global restructuring of the compiler-dependent and platform-dependent
770 include files. These changes may affect the existing platform-dependent
771 configuration files on some hosts. Lv Zheng.
773 The current C library configuration options appear below. For any issues,
774 it may be helpful to examine the existing compiler-dependent and
775 platform-dependent files as examples. Lv Zheng.
778 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
780 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
781 2) Unix/Windows/BSD applications:
782 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
784 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
785 3) UEFI applications:
786 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
788 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
789 4) UEFI applications (EDK2/StdLib):
790 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
791 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
794 AML interpreter: "module-level code" support. Allows for execution of so-
795 called "executable" AML code (math/logical operations, etc.) outside of
796 control methods not just at the module level (top level) but also within
797 any scope declared outside of a control method - Scope{}, Device{},
798 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
800 Simplified the configuration of the "maximum AML loops" global option by
801 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
805 Example Code and Data Size: These are the sizes for the OS-independent
806 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
807 debug version of the code includes the debug output trace mechanism and
808 has a much larger code and data size.
811 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
812 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
815 2) iASL Compiler/Disassembler and Tools:
817 iASL: Add full support for the RASF ACPI table (RAS Features Table).
818 Includes disassembler, data table compiler, and header support.
820 iASL Expand "module-level code" support. Allows for
821 compilation/disassembly of so-called "executable" AML code (math/logical
822 operations, etc.) outside of control methods not just at the module level
823 (top level) but also within any scope declared outside of a control
824 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
827 AcpiDump: Added support for dumping all SSDTs on newer versions of
828 Windows. These tables are now easily available -- SSDTs are not available
829 through the registry on older versions.
831 ----------------------------------------
832 27 May 2016. Summary of changes for version 20160527:
835 1) ACPICA kernel-resident subsystem:
837 Temporarily reverted the new arbitrary bit length/alignment support in
838 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
839 a number of regressions with the new code that need to be fully resolved
840 and tested before this support can be finally integrated into ACPICA.
841 Apologies for any inconveniences these issues may have caused.
843 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
844 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
845 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
847 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
848 option. Adds a new return macro, return_STR. Junk-uk Kim.
850 Example Code and Data Size: These are the sizes for the OS-independent
851 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
852 debug version of the code includes the debug output trace mechanism and
853 has a much larger code and data size.
856 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
857 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
859 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
860 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
862 ----------------------------------------
863 22 April 2016. Summary of changes for version 20160422:
865 1) ACPICA kernel-resident subsystem:
867 Fixed a regression in the GAS (generic address structure) arbitrary bit
868 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
869 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
871 ACPI 6.0: Added support for new/renamed resource macros. One new argument
872 was added to each of these macros, and the original name has been
873 deprecated. The AML disassembler will always disassemble to the new
874 names. Support for the new macros was added to iASL, disassembler,
875 resource manager, and the acpihelp utility. ACPICA BZ 1274.
877 I2cSerialBus -> I2cSerialBusV2
878 SpiSerialBus -> SpiSerialBusV2
879 UartSerialBus -> UartSerialBusV2
881 ACPI 6.0: Added support for a new integer field that was appended to the
882 package object returned by the _BIX method. This adds iASL compile-time
883 and AML runtime error checking. ACPICA BZ 1273.
885 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
886 Subspace Type2" (Headers, Disassembler, and data table compiler).
888 Example Code and Data Size: These are the sizes for the OS-independent
889 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
890 debug version of the code includes the debug output trace mechanism and
891 has a much larger code and data size.
894 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
895 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
897 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
898 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
901 2) iASL Compiler/Disassembler and Tools:
903 iASL: Implemented an ASL grammar extension to allow/enable executable
904 "module-level code" to be created and executed under the various
905 operators that create new scopes. This type of AML code is already
906 supported in all known AML interpreters, and the grammar change will
907 appear in the next version of the ACPI specification. Simplifies the
908 conditional runtime creation of named objects under these object types:
916 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
917 ease-of-use to the ASL language. The syntax is similar to the
918 corresponding C operator, and is implemented with the existing AML While
919 opcode -- thus requiring no changes to existing AML interpreters.
921 For (Initialize, Predicate, Update) {TermList}
926 Initializer // Nothing | TermArg => ComputationalData
927 Predicate // Nothing | TermArg => ComputationalData
928 Update // Nothing | TermArg => ComputationalData
932 iASL: The _HID/_ADR detection and validation has been enhanced to search
933 under conditionals in order to allow these objects to be conditionally
936 iASL: Fixed several issues with the constant folding feature. The
937 improvement allows better detection and resolution of statements that can
938 be folded at compile time. ACPICA BZ 1266.
940 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
941 conversion to the ASL ElseIf operator where incorrect ASL code could be
944 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
945 sometimes an extra (and extraneous) set of parentheses were emitted for
946 some combinations of operators. Although this did not cause any problems
947 with recompilation of the disassembled code, it made the code more
948 difficult to read. David Box. ACPICA BZ 1231.
950 iASL: Changed to ignore the unreferenced detection for predefined names
951 of resource descriptor elements, when the resource descriptor is
952 created/defined within a control method.
954 iASL: Disassembler: Fix a possible fault with externally declared Buffer
957 ----------------------------------------
958 18 March 2016. Summary of changes for version 20160318:
960 1) ACPICA kernel-resident subsystem:
962 Added support for arbitrary bit lengths and bit offsets for registers
963 defined by the Generic Address Structure. Previously, only aligned bit
964 lengths of 8/16/32/64 were supported. This was sufficient for many years,
965 but recently some machines have been seen that require arbitrary bit-
966 level support. ACPICA BZ 1240. Lv Zheng.
968 Fixed an issue where the \_SB._INI method sometimes must be evaluated
969 before any _REG methods are evaluated. Lv Zheng.
971 Implemented several changes related to ACPI table support
972 (Headers/Disassembler/TableCompiler):
973 NFIT: For ACPI 6.1, updated to add some additional new fields and
975 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
977 DMAR: Added new constants per the 10/2014 DMAR spec.
978 IORT: Added new subtable per the 10/2015 IORT spec.
979 HEST: For ACPI 6.1, added new constants and new subtable.
980 DBG2: Added new constants per the 12/2015 DBG2 spec.
981 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
983 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
985 Updated header support for the DMAR table to match the current version of
988 Added extensions to the ASL Concatenate operator to allow any ACPI object
989 to be passed as an operand. Any object other than Integer/String/Buffer
990 simply returns a string containing the object type. This extends the
991 usefulness of the Printf macros. Previously, Concatenate would abort the
992 control method if a non-data object was encountered.
994 ACPICA source code: Deployed the C "const" keyword across the source code
995 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
997 Example Code and Data Size: These are the sizes for the OS-independent
998 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
999 debug version of the code includes the debug output trace mechanism and
1000 has a much larger code and data size.
1003 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1004 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1006 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1007 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1010 2) iASL Compiler/Disassembler and Tools:
1012 iASL/Disassembler: Improved the heuristic used to determine the number of
1013 arguments for an externally defined control method (a method in another
1014 table). Although this is an improvement, there is no deterministic way to
1015 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1016 will completely solve this problem as it is deployed (automatically) in
1019 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1020 statements that could cause errors when the disassembled file is
1021 compiled. ACPICA BZ 1243. David Box.
1023 iASL: Fixed a regression caused by the merger of the two versions of the
1024 local strtoul64. Because of a dependency on a global variable, strtoul64
1025 could return an error for integers greater than a 32-bit value. ACPICA BZ
1028 iASL: Fixed a regression where a fault could occur for an ASL Return
1029 statement if it invokes a control method that is not resolved. ACPICA BZ
1032 AcpiXtract: Improved input file validation: detection of binary files and
1033 non-acpidump text files.
1035 ----------------------------------------
1036 12 February 2016. Summary of changes for version 20160212:
1038 1) ACPICA kernel-resident subsystem:
1040 Implemented full support for the ACPI 6.1 specification (released in
1041 January). This version of the specification is available at:
1042 http://www.uefi.org/specifications
1044 Only a relatively small number of changes were required in ACPICA to
1045 support ACPI 6.1, in these areas:
1046 - New predefined names
1048 - A new subtable for HEST
1049 - A few other header changes for new values
1051 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1052 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1054 Reverted a change made in version 20151218 which enabled method
1055 invocations to be targets of various ASL operators (SuperName and Target
1056 grammar elements). While the new behavior is supported by the ACPI
1057 specification, other AML interpreters do not support this behavior and
1058 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1059 this support. Therefore, the change was reverted to the original ACPICA
1062 ACPICA now supports the GCC 6 compiler.
1064 Current Release: (Note: build changes increased sizes)
1065 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1066 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1068 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1069 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1072 2) iASL Compiler/Disassembler and Tools:
1074 Completed full support for the ACPI 6.0 External() AML opcode. The
1075 compiler emits an external AML opcode for each ASL External statement.
1076 This opcode is used by the disassembler to assist with the disassembly of
1077 external control methods by specifying the required number of arguments
1078 for the method. AML interpreters do not use this opcode. To ensure that
1079 interpreters do not even see the opcode, a block of one or more external
1080 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1081 commonly deployed in BIOS code, the ability of disassemblers to correctly
1082 disassemble AML code will be greatly improved. David Box.
1084 iASL: Implemented support for an optional cross-reference output file.
1085 The -lx option will create a the cross-reference file with the suffix
1086 "xrf". Three different types of cross-reference are created in this file:
1087 - List of object references made from within each control method
1088 - Invocation (caller) list for each user-defined control method
1089 - List of references to each non-method object in the namespace
1091 iASL: Method invocations as ASL Target operands are now disallowed and
1092 flagged as errors in preparation for ACPI 6.2 (see the description of the
1095 ----------------------------------------
1096 8 January 2016. Summary of changes for version 20160108:
1098 1) ACPICA kernel-resident subsystem:
1100 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1101 copyright to all source code module headers and utility/tool signons.
1102 This includes the standard Linux dual-license header. This affects
1103 virtually every file in the ACPICA core subsystem, iASL compiler, all
1104 ACPICA utilities, and the ACPICA test suite.
1106 Fixed a regression introduced in version 20151218 concerning the
1107 execution of so-called module-level ASL/AML code. Namespace objects
1108 created under a module-level If() construct were not properly/fully
1109 entered into the namespace and could cause an interpreter fault when
1112 Example Code and Data Size: These are the sizes for the OS-independent
1113 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1114 debug version of the code includes the debug output trace mechanism and
1115 has a much larger code and data size.
1118 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1119 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1121 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1122 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1125 2) iASL Compiler/Disassembler and Tools:
1127 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1128 descriptors. The _PIN field name was incorrectly defined to be an array
1129 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1130 would cause incorrect bit width warnings when using Word (16-bit) fields
1131 to access the descriptors.
1134 ----------------------------------------
1135 18 December 2015. Summary of changes for version 20151218:
1137 1) ACPICA kernel-resident subsystem:
1139 Implemented per-AML-table execution of "module-level code" as individual
1140 ACPI tables are loaded into the namespace during ACPICA initialization.
1141 In other words, any module-level code within an AML table is executed
1142 immediately after the table is loaded, instead of batched and executed
1143 after all of the tables have been loaded. This provides compatibility
1144 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1147 To fully support the feature above, the default operation region handlers
1148 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1149 installed before any ACPI tables are loaded. This enables module-level
1150 code to access these address spaces during the table load and module-
1151 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1154 Implemented several changes to the internal _REG support in conjunction
1155 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1156 utilities for the changes above. Although these tools were changed, host
1157 operating systems that simply use the default handlers for SystemMemory,
1158 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1160 For example, in the code below, DEV1 is conditionally added to the
1161 namespace by the DSDT via module-level code that accesses an operation
1162 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1163 created immediately after the DSDT is loaded in order for the SSDT to
1164 successfully reference DEV1. Previously, this code would cause an
1165 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1166 fully supported by ACPICA.
1168 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1170 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1171 Field (OPR1, AnyAcc, NoLock, Preserve)
1182 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1184 External (\DEV1, DeviceObj)
1190 Fixed an AML interpreter problem where control method invocations were
1191 not handled correctly when the invocation was itself a SuperName argument
1192 to another ASL operator. In these cases, the method was not invoked.
1193 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1198 Decrement, Increment
1201 Signal, Release, Reset
1204 Implemented automatic String-to-ObjectReference conversion support for
1205 packages returned by predefined names (such as _DEP). A common BIOS error
1206 is to add double quotes around an ObjectReference namepath, which turns
1207 the reference into an unexpected string object. This support detects the
1208 problem and corrects it before the package is returned to the caller that
1209 invoked the method. Lv Zheng.
1211 Implemented extensions to the Concatenate operator. Concatenate now
1212 accepts any type of object, it is not restricted to simply
1213 Integer/String/Buffer. For objects other than these 3 basic data types,
1214 the argument is treated as a string containing the name of the object
1215 type. This expands the utility of Concatenate and the Printf/Fprintf
1216 macros. ACPICA BZ 1222.
1218 Cleaned up the output of the ASL Debug object. The timer() value is now
1219 optional and no longer emitted by default. Also, the basic data types of
1220 Integer/String/Buffer are simply emitted as their values, without a data
1221 type string -- since the data type is obvious from the output. ACPICA BZ
1224 Example Code and Data Size: These are the sizes for the OS-independent
1225 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1226 debug version of the code includes the debug output trace mechanism and
1227 has a much larger code and data size.
1230 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1231 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1233 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1234 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1237 2) iASL Compiler/Disassembler and Tools:
1239 iASL: Fixed some issues with the ASL Include() operator. This operator
1240 was incorrectly defined in the iASL parser rules, causing a new scope to
1241 be opened for the code within the include file. This could lead to
1242 several issues, including allowing ASL code that is technically illegal
1243 and not supported by AML interpreters. Note, this does not affect the
1244 related #include preprocessor operator. ACPICA BZ 1212.
1246 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1247 operator is essentially an ASL macro since there is no AML opcode
1248 associated with it. The code emitted by the iASL compiler for ElseIf is
1249 an Else opcode followed immediately by an If opcode. The disassembler
1250 will now emit an ElseIf if it finds an Else immediately followed by an
1251 If. This simplifies the decoded ASL, especially for deeply nested
1252 If..Else and large Switch constructs. Thus, the disassembled code more
1253 closely follows the original source ASL. ACPICA BZ 1211. Example:
1265 ElseIf (Arg0 == 0x02)
1270 AcpiExec: Added support for the new module level code behavior and the
1271 early region installation. This required a small change to the
1272 initialization, since AcpiExec must install its own operation region
1275 AcpiExec: Added support to make the debug object timer optional. Default
1276 is timer disabled. This cleans up the debug object output -- the timer
1277 data is rarely used.
1279 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1280 appear on the command line. This can be important when there are
1281 interdependencies/references between the tables.
1283 iASL/Templates. Add support to generate template files with multiple
1284 SSDTs within a single output file. Also added ommand line support to
1285 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1289 ----------------------------------------
1290 24 November 2015. Summary of changes for version 20151124:
1292 1) ACPICA kernel-resident subsystem:
1294 Fixed a possible regression for a previous update to FADT handling. The
1295 FADT no longer has a fixed table ID, causing some issues with code that
1296 was hardwired to a specific ID. Lv Zheng.
1298 Fixed a problem where the method auto-serialization could interfere with
1299 the current SyncLevel. This change makes the auto-serialization support
1300 transparent to the SyncLevel support and management.
1302 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1303 interface is intended for early access to the namespace during the
1304 initial namespace device discovery walk. The _SUB method has been seen to
1305 access operation regions in some cases, causing errors because the
1306 operation regions are not fully initialized.
1308 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1309 that can cause faults. Lv Zheng.
1311 AML Debugger: Add thread ID support so that single-step mode only applies
1312 to the AML Debugger thread. This prevents runtime errors within some
1315 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1316 methods that are invoked by this interface are optional, removed warnings
1317 emitted for the case where one or more of these methods do not exist.
1318 ACPICA BZ 1208, original change by Prarit Bhargava.
1320 Made a major pass through the entire ACPICA source code base to
1321 standardize formatting that has diverged a bit over time. There are no
1322 functional changes, but this will of course cause quite a few code
1323 differences from the previous ACPICA release.
1325 Example Code and Data Size: These are the sizes for the OS-independent
1326 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1327 debug version of the code includes the debug output trace mechanism and
1328 has a much larger code and data size.
1331 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1332 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1334 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1335 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1338 2) iASL Compiler/Disassembler and Tools:
1340 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1341 definition blocks within a single ASL file and the resulting AML file.
1342 Support for this type of file was also added to the various tools that
1343 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1344 example code below shows two definition blocks within the same file:
1346 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1350 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1354 iASL: Enhanced typechecking for the Name() operator. All expressions for
1355 the value of the named object must be reduced/folded to a single constant
1356 at compile time, as per the ACPI specification (the AML definition of
1359 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1360 and assembly headers). Now all emitted code correctly begins in column 1.
1362 iASL: Added an error message for an attempt to open a Scope() on an
1363 object defined in an SSDT. The DSDT is always loaded into the namespace
1364 first, so any attempt to open a Scope on an SSDT object will fail at
1368 ----------------------------------------
1369 30 September 2015. Summary of changes for version 20150930:
1371 1) ACPICA kernel-resident subsystem:
1373 Debugger: Implemented several changes and bug fixes to assist support for
1374 the in-kernel version of the AML debugger. Lv Zheng.
1375 - Fix the "predefined" command for in-kernel debugger.
1376 - Do not enter debug command loop for the help and version commands.
1377 - Disallow "execute" command during execution/single-step of a method.
1379 Interpreter: Updated runtime typechecking for all operators that have
1380 target operands. The operand is resolved and validated that it is legal.
1381 For example, the target cannot be a non-data object such as a Device,
1382 Mutex, ThermalZone, etc., as per the ACPI specification.
1384 Debugger: Fixed the double-mutex user I/O handshake to work when local
1385 deadlock detection is enabled.
1387 Debugger: limited display of method locals and arguments (LocalX and
1388 ArgX) to only those that have actually been initialized. This prevents
1389 lines of extraneous output.
1391 Updated the definition of the NFIT table to correct the bit polarity of
1392 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1394 Example Code and Data Size: These are the sizes for the OS-independent
1395 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1396 debug version of the code includes the debug output trace mechanism and
1397 has a much larger code and data size.
1400 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1401 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1403 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1404 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1407 2) iASL Compiler/Disassembler and Tools:
1409 iASL: Improved the compile-time typechecking for operands of many of the
1412 -- Added an option to disable compiler operand/operator typechecking (-
1415 -- For the following operators, the TermArg operands are now validated
1416 when possible to be Integer data objects: BankField, OperationRegion,
1417 DataTableRegion, Buffer, and Package.
1419 -- Store (Source, Target): Both the source and target operands are
1420 resolved and checked that the operands are both legal. For example,
1421 neither operand can be a non-data object such as a Device, Mutex,
1422 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1423 operator can be used to store an object to any type of target object.
1425 -- Store (Source, Target): If the source is a Package object, the target
1426 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1427 is a Package, the source must also be a Package.
1429 -- Store (Source, Target): A warning is issued if the source and target
1430 resolve to the identical named object.
1432 -- Store (Source, <method invocation>): An error is generated for the
1433 target method invocation, as this construct is not supported by the AML
1436 -- For all ASL math and logic operators, the target operand must be a
1437 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1438 includes the function return value also.
1440 -- External declarations are also included in the typechecking where
1441 possible. External objects defined using the UnknownObj keyword cannot be
1442 typechecked, however.
1444 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1446 - Legacy code: Index(PKG1, 3)
1447 - New ASL+ code: PKG1[3]
1448 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1451 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1452 spaces were inadvertently appended to the filename, causing file access
1453 and deletion problems on some systems.
1455 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1456 possible compiler output files when building the test suite -- thus
1457 exercising these features of the compiler. These files are automatically
1458 deleted when the test suite exits.
1461 ----------------------------------------
1462 18 August 2015. Summary of changes for version 20150818:
1464 1) ACPICA kernel-resident subsystem:
1466 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1467 Zheng. ACPICA BZ 1186.
1469 Completed development to ensure that the ACPICA Disassembler and Debugger
1470 are fully standalone components of ACPICA. Removed cross-component
1471 dependences. Lv Zheng.
1473 The max-number-of-AML-loops is now runtime configurable (previously was
1474 compile-time only). This is essentially a loop timeout to force-abort
1475 infinite AML loops. ACPCIA BZ 1192.
1477 Debugger: Cleanup output to dump ACPI names and namepaths without any
1478 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1480 Removed unnecessary conditional compilations across the Debugger and
1481 Disassembler components where entire modules could be left uncompiled.
1483 The aapits test is deprecated and has been removed from the ACPICA git
1484 tree. The test has never been completed and has not been maintained, thus
1485 becoming rather useless. ACPICA BZ 1015, 794.
1487 A batch of small changes to close bugzilla and other reports:
1488 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1489 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1490 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1491 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1493 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1495 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1497 - Debugger: Split debugger initialization/termination interfaces. Lv
1499 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1501 - AcpiExec: Add debug message during _REG method phase during table
1503 - AcpiNames: Fix a regression where some output was missing and no longer
1505 - Debugger: General cleanup and simplification. Lv Zheng.
1506 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1508 Example Code and Data Size: These are the sizes for the OS-independent
1509 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1510 debug version of the code includes the debug output trace mechanism and
1511 has a much larger code and data size.
1514 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1515 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1517 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1518 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1521 2) iASL Compiler/Disassembler and Tools:
1523 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1524 were not handled properly and caused load errors. Now, properly invoke
1525 and use the ACPICA auto-reallocate mechanism for ACPI table data
1526 structures. ACPICA BZ 1188
1528 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1531 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1532 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1533 executed during initialization. ACPICA BZ 1187, 1189.
1535 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1536 that corresponds to each disassembled ASL statement, to simplify
1537 debugging. ACPICA BZ 1191.
1539 Debugger: Add option to the "objects" command to display a summary of the
1540 current namespace objects (Object type and count). This is displayed if
1541 the command is entered with no arguments.
1543 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1546 ----------------------------------------
1547 17 July 2015. Summary of changes for version 20150717:
1549 1) ACPICA kernel-resident subsystem:
1551 Improved the partitioning between the Debugger and Disassembler
1552 components. This allows the Debugger to be used standalone within kernel
1553 code without the Disassembler (which is used for single stepping also).
1554 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1556 Debugger: Implemented a new command to trace the execution of control
1557 methods (Trace). This is especially useful for the in-kernel version of
1558 the debugger when file I/O may not be available for method trace output.
1559 See the ACPICA reference for more information. Lv Zheng.
1561 Moved all C library prototypes (used for the local versions of these
1562 functions when requested) to a new header, acclib.h
1563 Cleaned up the use of non-ANSI C library functions. These functions are
1564 implemented locally in ACPICA. Moved all such functions to a common
1565 source file, utnonansi.c
1567 Debugger: Fixed a problem with the "!!" command (get last command
1568 executed) where the debugger could enter an infinite loop and eventually
1571 Removed the use of local macros that were used for some of the standard C
1572 library functions to automatically cast input parameters. This mostly
1573 affected the is* functions where the input parameter is defined to be an
1574 int. This required a few modifications to the main ACPICA source code to
1575 provide casting for these functions and eliminate possible compiler
1576 warnings for these parameters.
1578 Across the source code, added additional status/error checking to resolve
1579 issues discovered by static source code analysis tools such as Coverity.
1581 Example Code and Data Size: These are the sizes for the OS-independent
1582 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1583 debug version of the code includes the debug output trace mechanism and
1584 has a much larger code and data size.
1587 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1588 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1590 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1591 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1594 2) iASL Compiler/Disassembler and Tools:
1596 iASL: Fixed a regression where the device map file feature no longer
1597 worked properly when used in conjunction with the disassembler. It only
1598 worked properly with the compiler itself.
1600 iASL: Implemented a new warning for method LocalX variables that are set
1601 but never used (similar to a C compiler such as gcc). This also applies
1602 to ArgX variables that are not defined by the parent method, and are
1603 instead (legally) used as local variables.
1605 iASL/Preprocessor: Finished the pass-through of line numbers from the
1606 preprocessor to the compiler. This ensures that compiler errors/warnings
1607 have the correct original line numbers and filenames, regardless of any
1610 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1611 pass-through of comments to the preprocessor output file (which becomes
1612 the compiler input file). Also fixed a problem with // comments that
1613 appear after a math expression.
1615 iASL: Added support for the TCPA server table to the table compiler and
1616 template generator. (The client table was already previously supported)
1618 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1619 identify the iASL compiler.
1621 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1622 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1625 AcpiHelp: Update to expand help messages for the iASL preprocessor
1629 ----------------------------------------
1630 19 June 2015. Summary of changes for version 20150619:
1632 Two regressions in version 20150616 have been addressed:
1634 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1635 etc.) This update changes ACPICA to only use the standard headers for
1636 functions, or the prototypes for the local versions of the C library
1637 functions. Across the source code, this required some additional casts
1638 for some Clib invocations for portability. Moved all local prototypes to
1639 a new file, acclib.h
1641 Fixes several problems with recent changes to the handling of the FACS
1642 table that could cause some systems not to boot.
1645 ----------------------------------------
1646 16 June 2015. Summary of changes for version 20150616:
1649 1) ACPICA kernel-resident subsystem:
1651 Across the entire ACPICA source code base, the various macros for the C
1652 library functions (such as ACPI_STRLEN, etc.) have been removed and
1653 replaced by the standard C library names (strlen, etc.) The original
1654 purpose for these macros is no longer applicable. This simplification
1655 reduces the number of macros used in the ACPICA source code
1656 significantly, improving readability and maintainability.
1658 Implemented support for a new ACPI table, the OSDT. This table, the
1659 "override" SDT, can be loaded directly by the host OS at boot time. It
1660 enables the replacement of existing namespace objects that were installed
1661 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1662 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1663 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1666 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1667 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1668 X field). This change will support both automatically. There continues to
1669 be systems found with this issue. This support requires a change to the
1670 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1671 been added to allow the host to select which FACS is desired
1672 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1675 Added a new feature to allow for systems that do not contain an FACS.
1676 Although this is already supported on hardware-reduced platforms, the
1677 feature has been extended for all platforms. The reasoning is that we do
1678 not want to abort the entire ACPICA initialization just because the
1679 system is seriously buggy and has no FACS.
1681 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1682 not correctly transcribed from the ACPI specification in ACPICA version
1685 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1688 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1689 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1690 compiler also updated. Note: The TCPA "server" table is not supported by
1691 the disassembler/table-compiler at this time.
1693 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1695 Example Code and Data Size: These are the sizes for the OS-independent
1696 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1697 debug version of the code includes the debug output trace mechanism and
1698 has a much larger code and data size.
1701 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1702 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1704 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1705 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1708 2) iASL Compiler/Disassembler and Tools:
1710 Disassembler: Fixed a problem with the new symbolic operator disassembler
1711 where incorrect ASL code could be emitted in some cases for the "non-
1712 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1713 ShiftRight. The actual problem cases seem to be rather unusual in common
1714 ASL code, however. David Box.
1716 Modified the linux version of acpidump to obtain ACPI tables from not
1717 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1720 iASL: Fixed a problem where the user preprocessor output file (.i)
1721 contained extra data that was not expected. The compiler was using this
1722 file as a temporary file and passed through #line directives in order to
1723 keep compiler error messages in sync with the input file and line number
1724 across multiple include files. The (.i) is no longer a temporary file as
1725 the compiler uses a new, different file for the original purpose.
1727 iASL: Fixed a problem where comments within the original ASL source code
1728 file were not passed through to the preprocessor output file, nor any
1731 iASL: Fixed some issues for the handling of the "#include" preprocessor
1732 directive and the similar (but not the same) "Include" ASL operator.
1734 iASL: Add support for the new OSDT in both the disassembler and compiler.
1736 iASL: Fixed a problem with the constant folding support where a Buffer
1737 object could be incorrectly generated (incorrectly formed) during a
1738 conversion to a Store() operator.
1740 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1741 description text for the _REV predefined name. _REV now permanently
1742 returns 2, as per the ACPI 6.0 specification.
1744 Debugger: Enhanced the output of the Debug ASL object for references
1745 produced by the Index operator. For Buffers and strings, only output the
1746 actual byte pointed to by the index. For packages, only print the single
1747 package element decoded by the index. Previously, the entire
1748 buffer/string/package was emitted.
1750 iASL/Table-compiler: Fixed a regression where the "generic" data types
1751 were no longer recognized, causing errors.
1754 ----------------------------------------
1755 15 May 2015. Summary of changes for version 20150515:
1757 This release implements most of ACPI 6.0 as described below.
1759 1) ACPICA kernel-resident subsystem:
1761 Implemented runtime argument checking and return value checking for all
1762 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
1763 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
1765 Example Code and Data Size: These are the sizes for the OS-independent
1766 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1767 debug version of the code includes the debug output trace mechanism and
1768 has a much larger code and data size.
1771 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1772 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1774 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1775 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1778 2) iASL Compiler/Disassembler and Tools:
1780 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
1781 names (argument count validation and return value typechecking.)
1783 iASL disassembler and table compiler: implemented support for all new
1784 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
1786 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
1789 iASL preprocessor: Added a new directive to enable inclusion of binary
1790 blobs into ASL code. The new directive is #includebuffer. It takes a
1791 binary file as input and emits a named ascii buffer object into the ASL
1794 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
1796 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
1799 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
1803 ----------------------------------------
1804 10 April 2015. Summary of changes for version 20150410:
1806 Reverted a change introduced in version 20150408 that caused
1807 a regression in the disassembler where incorrect operator
1808 symbols could be emitted.
1811 ----------------------------------------
1812 08 April 2015. Summary of changes for version 20150408:
1815 1) ACPICA kernel-resident subsystem:
1817 Permanently set the return value for the _REV predefined name. It now
1818 returns 2 (was 5). This matches other ACPI implementations. _REV will be
1819 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
1820 for ACPI 2.0 and later. It should never be used to differentiate or
1821 identify operating systems.
1823 Added the "Windows 2015" string to the _OSI support. ACPICA will now
1824 return TRUE to a query with this string.
1826 Fixed several issues with the local version of the printf function.
1828 Added the C99 compiler option (-std=c99) to the Unix makefiles.
1831 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
1832 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
1834 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1835 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1838 2) iASL Compiler/Disassembler and Tools:
1840 iASL: Implemented an enhancement to the constant folding feature to
1841 transform the parse tree to a simple Store operation whenever possible:
1842 Add (2, 3, X) ==> is converted to: Store (5, X)
1843 X = 2 + 3 ==> is converted to: Store (5, X)
1845 Updated support for the SLIC table (Software Licensing Description Table)
1846 in both the Data Table compiler and the disassembler. The SLIC table
1847 support now conforms to "Microsoft Software Licensing Tables (SLIC and
1848 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
1849 following the ACPI header is now defined to be "Proprietary Data", and as
1850 such, can only be entered or displayed as a hex data block.
1852 Implemented full support for the MSDM table as described in the document
1853 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
1854 following the ACPI header is defined to be "Proprietary Data", and can
1855 only be entered or displayed as a hex data block.
1857 Implemented the -Pn option for the iASL Table Compiler (was only
1858 implemented for the ASL compiler). This option disables the iASL
1861 Disassembler: For disassembly of Data Tables, added a comment field
1862 around the Ascii equivalent data that is emitted as part of the "Raw
1863 Table Data" block. This prevents the iASL Preprocessor from possible
1864 confusion if/when the table is compiled.
1866 Disassembler: Added an option (-df) to force the disassembler to assume
1867 that the table being disassembled contains valid AML. This feature is
1868 useful for disassembling AML files that contain ACPI signatures other
1869 than DSDT or SSDT (such as OEMx or other signatures).
1871 Changes for the EFI version of the tools:
1872 1) Fixed a build error/issue
1873 2) Fixed a cast warning
1875 iASL: Fixed a path issue with the __FILE__ operator by making the
1876 directory prefix optional within the internal SplitInputFilename
1879 Debugger: Removed some unused global variables.
1881 Tests: Updated the makefile for proper generation of the AAPITS suite.
1884 ----------------------------------------
1885 04 February 2015. Summary of changes for version 20150204:
1887 ACPICA kernel-resident subsystem:
1889 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1890 copyright to all module headers and signons, including the standard Linux
1891 header. This affects virtually every file in the ACPICA core subsystem,
1892 iASL compiler, all ACPICA utilities, and the test suites.
1894 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1895 A raw gpe handling mechanism was created to allow better handling of GPE
1896 storms that aren't easily managed by the normal handler. The raw handler
1897 allows disabling/renabling of the the GPE so that interrupt storms can be
1898 avoided in cases where events cannot be timely serviced. In this
1899 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1900 GPE. This API will leave the reference counts undisturbed, thereby
1901 preventing unintentional clearing of the GPE when the intent in only to
1902 temporarily disable it. Raw handlers allow enabling and disabling of a
1903 GPE by removing GPE register locking. As such, raw handlers much provide
1904 their own locks while using GPE API's to protect access to GPE data
1908 Events: Always modify GPE registers under the GPE lock.
1909 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1910 values. Reported as bug by joe.liu@apple.com.
1912 Unix makefiles: Separate option to disable optimizations and
1913 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1914 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1915 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1916 errors when building ACPICA. This allows disabling the option without
1917 also having to disable optimazations.
1921 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1922 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1925 --------------------------------------
1926 07 November 2014. Summary of changes for version 20141107:
1928 This release is available at https://acpica.org/downloads
1930 This release introduces and implements language extensions to ASL that
1931 provide support for symbolic ("C-style") operators and expressions. These
1932 language extensions are known collectively as ASL+.
1935 1) iASL Compiler/Disassembler and Tools:
1937 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1938 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1941 Disassembler: Fixed the Unicode macro support to add escape sequences.
1942 All non-printable ASCII values are emitted as escape sequences, as well
1943 as the standard escapes for quote and backslash. Ensures that the
1944 disassembled macro can be correctly recompiled.
1946 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1947 translated to existing AML Concatenate and Store operations. Printf
1948 writes to the ASL Debug object. Fprintf allows the specification of an
1949 ASL name as the target. Only a single format specifier is required, %o,
1950 since the AML interpreter dynamically converts objects to the required
1953 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1954 (Concatenate (Concatenate (Concatenate ("", Arg0),
1955 ": Unexpected value for "), Arg1), ", "), Arg2),
1956 " at line "), Arg3), Debug)
1958 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1959 Arg0, Arg1, Arg2, Arg3)
1961 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1962 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1964 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1966 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1967 ASL parse tree before the AML code is generated. This allows blocks of
1968 ASL code to be removed in order to help locate and identify problem
1969 devices and/or code. David E. Box.
1971 AcpiExec: Added support (-fi) for an optional namespace object
1972 initialization file. This file specifies initial values for namespace
1973 objects as necessary for debugging and testing different ASL code paths
1974 that may be taken as a result of BIOS options.
1977 2) Overview of symbolic operator support for ASL (ASL+)
1978 -------------------------------------------------------
1980 As an extension to the ASL language, iASL implements support for symbolic
1981 (C-style) operators for math and logical expressions. This can greatly
1982 simplify ASL code as well as improve both readability and
1983 maintainability. These language extensions can exist concurrently with
1984 all legacy ASL code and expressions.
1986 The symbolic extensions are 100% compatible with existing AML
1987 interpreters, since no new AML opcodes are created. To implement the
1988 extensions, the iASL compiler transforms the symbolic expressions into
1989 the legacy ASL/AML equivalents at compile time.
1991 Full symbolic expressions are supported, along with the standard C
1992 precedence and associativity rules.
1994 Full disassembler support for the symbolic expressions is provided, and
1995 creates an automatic migration path for existing ASL code to ASL+ code
1996 via the disassembly process. By default, the disassembler now emits ASL+
1997 code with symbolic expressions. An option (-dl) is provided to force the
1998 disassembler to emit legacy ASL code if desired.
2000 Below is the complete list of the currently supported symbolic operators
2001 with examples. See the iASL User Guide for additional information.
2004 ASL+ Syntax Legacy ASL Equivalent
2005 ----------- ---------------------
2009 Z = X + Y Add (X, Y, Z)
2010 Z = X - Y Subtract (X, Y, Z)
2011 Z = X * Y Multiply (X, Y, Z)
2012 Z = X / Y Divide (X, Y, , Z)
2013 Z = X % Y Mod (X, Y, Z)
2014 Z = X << Y ShiftLeft (X, Y, Z)
2015 Z = X >> Y ShiftRight (X, Y, Z)
2016 Z = X & Y And (X, Y, Z)
2017 Z = X | Y Or (X, Y, Z)
2018 Z = X ^ Y Xor (X, Y, Z)
2023 // Logical operators
2025 (X == Y) LEqual (X, Y)
2026 (X != Y) LNotEqual (X, Y)
2027 (X < Y) LLess (X, Y)
2028 (X > Y) LGreater (X, Y)
2029 (X <= Y) LLessEqual (X, Y)
2030 (X >= Y) LGreaterEqual (X, Y)
2031 (X && Y) LAnd (X, Y)
2035 // Assignment and compound assignment operations
2038 X += Y Add (X, Y, X)
2039 X -= Y Subtract (X, Y, X)
2040 X *= Y Multiply (X, Y, X)
2041 X /= Y Divide (X, Y, , X)
2042 X %= Y Mod (X, Y, X)
2043 X <<= Y ShiftLeft (X, Y, X)
2044 X >>= Y ShiftRight (X, Y, X)
2045 X &= Y And (X, Y, X)
2047 X ^= Y Xor (X, Y, X)
2054 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2055 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2057 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2059 And (MEMB, 0xFFFFFFF0, SRMB)
2060 Store (MEMB, Local2)
2061 Store (PDBM, Local1)
2062 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2064 Or (PDBM, 0x02, PDBM)
2068 If (((R510 & 0x03FB) == 0x02E0) ||
2069 ((R520 & 0x03FB) == 0x02E0) ||
2070 ((R530 & 0x03FB) == 0x02E0) ||
2071 ((R540 & 0x03FB) == 0x02E0))
2073 SRMB = (MEMB & 0xFFFFFFF0)
2076 PDBM &= 0xFFFFFFFFFFFFFFF9
2082 Store (0x1234, Local1)
2083 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2084 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2085 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2086 Store (Index (PKG1, 0x03), Local6)
2087 Store (Add (Local3, Local2), Debug)
2088 Add (Local1, 0x0F, Local2)
2089 Add (Local1, Multiply (Local2, Local3), Local2)
2090 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2094 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2095 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2096 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2097 Local6 = Index (PKG1, 0x03)
2098 Debug = (Local3 + Local2)
2099 Local2 = (Local1 + 0x0F)
2100 Local2 = (Local1 + (Local2 * Local3))
2101 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2104 ----------------------------------------
2105 26 September 2014. Summary of changes for version 20140926:
2107 1) ACPICA kernel-resident subsystem:
2109 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2110 In order to support GPIO Connection objects with multiple pins, along
2111 with the related Field objects, the following changes to the interface
2112 have been made: The Address is now defined to be the offset in bits of
2113 the field unit from the previous invocation of a Connection. It can be
2114 viewed as a "Pin Number Index" into the connection resource descriptor.
2115 The BitWidth is the exact bit width of the field. It is usually one bit,
2116 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2117 additional information and examples.
2119 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2120 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2121 by the firmware), so that they cannot fire until they are enabled via
2122 AcpiUpdateAllGpes. Rafael J. Wysocki.
2124 Added a new return flag for the Event/GPE status interfaces --
2125 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2126 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2127 GPE currently has a handler associated with it, and can thus actually
2128 affect the system. Lv Zheng.
2130 Example Code and Data Size: These are the sizes for the OS-independent
2131 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2132 debug version of the code includes the debug output trace mechanism and
2133 has a much larger code and data size.
2136 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2137 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2139 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2140 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2142 2) iASL Compiler/Disassembler and Tools:
2144 iASL: Fixed a memory allocation/free regression introduced in 20140828
2145 that could cause the compiler to crash. This was introduced inadvertently
2146 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2149 iASL: Removed two error messages that have been found to create false
2150 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2151 1) Illegal forward reference within a method
2152 2) Illegal reference across two methods
2154 iASL: Implemented a new option (-lm) to create a hardware mapping file
2155 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2156 works for both the compiler and disassembler. See the iASL compiler user
2157 guide for additional information and examples (section 6.4.6).
2159 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2160 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2161 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2163 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2164 unless STDIN is actually a terminal. Assists with batch-mode processing.
2167 Disassembler/AcpiHelp: Added another large group of recognized _HID
2171 ----------------------------------------
2172 28 August 2014. Summary of changes for version 20140828:
2174 1) ACPICA kernel-resident subsystem:
2176 Fixed a problem related to the internal use of the Timer() operator where
2177 a 64-bit divide could cause an attempted link to a double-precision math
2178 library. This divide is not actually necessary, so the code was
2179 restructured to eliminate it. Lv Zheng.
2181 ACPI 5.1: Added support for the runtime validation of the _DSD package
2182 (similar to the iASL support).
2184 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2185 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2187 Example Code and Data Size: These are the sizes for the OS-independent
2188 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2189 debug version of the code includes the debug output trace mechanism and
2190 has a much larger code and data size.
2193 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2194 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2196 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2197 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2199 2) iASL Compiler/Disassembler and Tools:
2201 AcpiExec: Fixed a problem on unix systems where the original terminal
2202 state was not always properly restored upon exit. Seen when using the -v
2203 option. ACPICA BZ 1104.
2205 iASL: Fixed a problem with the validation of the ranges/length within the
2206 Memory24 resource descriptor. There was a boundary condition when the
2207 range was equal to the (length -1) caused by the fact that these values
2208 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2210 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2212 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2214 now supported properly.
2216 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2217 in the disassembler, data table compiler, and table template generator.
2219 iASL: Added a requirement for Device() objects that one of either a _HID
2220 or _ADR must exist within the scope of a Device, as per the ACPI
2221 specification. Remove a similar requirement that was incorrectly in place
2222 for the _DSD object.
2224 iASL: Added error detection for illegal named references within control
2225 methods that would cause runtime failures. Now trapped as errors are: 1)
2226 References to objects within a non-parent control method. 2) Forward
2227 references (within a method) -- for control methods, AML interpreters use
2228 a one-pass parse of control methods. ACPICA BZ 1008.
2230 iASL: Added error checking for dependencies related to the _PSx power
2231 methods. ACPICA BZ 1029.
2232 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2234 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2237 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2238 deploying the existing object and string caches and adding new caches for
2241 iASL: Split the huge parser source file into multiple subfiles to improve
2242 manageability. Generation now requires the M4 macro preprocessor, which
2243 is part of the Bison distribution on both unix and windows platforms.
2245 AcpiSrc: Fixed and removed all extraneous warnings generated during
2246 entire ACPICA source code scan and/or conversion.
2249 ----------------------------------------
2251 24 July 2014. Summary of changes for version 20140724:
2253 The ACPI 5.1 specification has been released and is available at:
2254 http://uefi.org/specs/access
2257 0) ACPI 5.1 support in ACPICA:
2259 ACPI 5.1 is fully supported in ACPICA as of this release.
2261 New predefined names. Support includes iASL and runtime ACPICA
2263 _CCA (Cache Coherency Attribute).
2264 _DSD (Device-Specific Data). David Box.
2266 Modifications to existing ACPI tables. Support includes headers, iASL
2267 Data Table compiler, disassembler, and the template generator.
2268 FADT - New fields and flags. Graeme Gregory.
2269 GTDT - One new subtable and new fields. Tomasz Nowicki.
2270 MADT - Two new subtables. Tomasz Nowicki.
2271 PCCT - One new subtable.
2274 New notification type for System Resource Affinity change events.
2277 1) ACPICA kernel-resident subsystem:
2279 Fixed a regression introduced in 20140627 where a fault can happen during
2280 the deletion of Alias AML namespace objects. The problem affected both
2281 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2283 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2284 simple mechanism to enable wake GPEs that have no associated handler or
2285 control method. Rafael Wysocki.
2287 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2288 handler or control method associated with the particular GPE. This will
2289 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2291 Updated GPE handling and dispatch by disabling the GPE before clearing
2292 the status bit for edge-triggered GPEs. Lv Zheng.
2294 Added Timer() support to the AML Debug object. The current timer value is
2295 now displayed with each invocation of (Store to) the debug object to
2296 enable simple generation of execution times for AML code (method
2297 execution for example.) ACPICA BZ 1093.
2299 Example Code and Data Size: These are the sizes for the OS-independent
2300 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2301 debug version of the code includes the debug output trace mechanism and
2302 has a much larger code and data size.
2305 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2306 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2308 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2309 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2312 2) iASL Compiler/Disassembler and Tools:
2314 Fixed an issue with the recently added local printf implementation,
2315 concerning width/precision specifiers that could cause incorrect output.
2316 Lv Zheng. ACPICA BZ 1094.
2318 Disassembler: Added support to detect buffers that contain UUIDs and
2319 disassemble them to an invocation of the ToUUID operator. Also emit
2320 commented descriptions of known ACPI-related UUIDs.
2322 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2323 -u. Adds three new files.
2325 iASL: Update table compiler and disassembler for DMAR table changes that
2326 were introduced in September 2013. With assistance by David Woodhouse.
2328 ----------------------------------------
2329 27 June 2014. Summary of changes for version 20140627:
2331 1) ACPICA kernel-resident subsystem:
2333 Formatted Output: Implemented local versions of standard formatted output
2334 utilities such as printf, etc. Over time, it has been discovered that
2335 there are in fact many portability issues with printf, and the addition
2336 of this feature will fix/prevent these issues once and for all. Some
2337 known issues are summarized below:
2339 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2340 for the Linux kernel and is %uI64 for some MSVC versions.
2341 2) Invoking printf consistently in a manner that is portable across both
2342 32-bit and 64-bit platforms is difficult at best in many situations.
2343 3) The output format for pointers varies from system to system (leading
2344 zeros especially), and leads to inconsistent output from ACPICA across
2346 4) Certain platform-specific printf formats may conflict with ACPICA use.
2347 5) If there is no local C library available, ACPICA now has local support
2350 -- To address these printf issues in a complete manner, ACPICA now
2351 directly implements a small subset of printf format specifiers, only
2352 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2354 Implemented support for ACPICA generation within the EFI environment.
2355 Initially, the AcpiDump utility is supported in the UEFI shell
2356 environment. Lv Zheng.
2358 Added a new external interface, AcpiLogError, to improve ACPICA
2359 portability. This allows the host to redirect error messages from the
2360 ACPICA utilities. Lv Zheng.
2362 Added and deployed new OSL file I/O interfaces to improve ACPICA
2370 There are C library implementations of these functions in the new file
2371 service_layers/oslibcfs.c -- however, the functions can be implemented by
2372 the local host in any way necessary. Lv Zheng.
2374 Implemented a mechanism to disable/enable ACPI table checksum validation
2375 at runtime. This can be useful when loading tables very early during OS
2376 initialization when it may not be possible to map the entire table in
2377 order to compute the checksum. Lv Zheng.
2379 Fixed a buffer allocation issue for the Generic Serial Bus support.
2380 Originally, a fixed buffer length was used. This change allows for
2381 variable-length buffers based upon the protocol indicated by the field
2382 access attributes. Reported by Lan Tianyu. Lv Zheng.
2384 Fixed a problem where an object detached from a namespace node was not
2385 properly terminated/cleared and could cause a circular list problem if
2386 reattached. ACPICA BZ 1063. David Box.
2388 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2390 Fixed a possible memory leak in an error return path within the function
2391 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2393 Example Code and Data Size: These are the sizes for the OS-independent
2394 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2395 debug version of the code includes the debug output trace mechanism and
2396 has a much larger code and data size.
2399 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2400 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2402 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2403 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2406 2) iASL Compiler/Disassembler and Tools:
2408 Disassembler: Add dump of ASCII equivalent text within a comment at the
2409 end of each line of the output for the Buffer() ASL operator.
2411 AcpiDump: Miscellaneous changes:
2412 Fixed repetitive table dump in -n mode.
2413 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2414 the ACPI 2.0 GUID fails.
2416 iASL: Fixed a problem where the compiler could fault if incorrectly given
2417 an acpidump output file as input. ACPICA BZ 1088. David Box.
2419 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2420 they are invoked without any arguments.
2422 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2423 1086. Colin Ian King.
2425 Disassembler: Cleaned up a block of code that extracts a parent Op
2426 object. Added a comment that explains that the parent is guaranteed to be
2427 valid in this case. ACPICA BZ 1069.
2430 ----------------------------------------
2431 24 April 2014. Summary of changes for version 20140424:
2433 1) ACPICA kernel-resident subsystem:
2435 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2436 Some of these tables are known to contain a trailing NULL entry. Lv
2439 Removed an extraneous error message for the case where there are a large
2440 number of system GPEs (> 124). This was the "32-bit FADT register is too
2441 long to convert to GAS struct" message, which is irrelevant for GPEs
2442 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2443 (limited capacity) GAS bit length. Also, several changes to ensure proper
2444 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2447 Implemented and deployed additional configuration support for the public
2448 ACPICA external interfaces. Entire classes of interfaces can now be
2449 easily modified or configured out, replaced by stubbed inline functions
2450 by default. Lv Zheng.
2452 Moved all public ACPICA runtime configuration globals to the public
2453 ACPICA external interface file for convenience. Also, removed some
2454 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2456 Documentation: Added a new section to the ACPICA reference describing the
2457 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2458 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2461 Example Code and Data Size: These are the sizes for the OS-independent
2462 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2463 debug version of the code includes the debug output trace mechanism and
2464 has a much larger code and data size.
2467 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2468 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2470 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2471 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2474 2) iASL Compiler/Disassembler and Tools:
2476 iASL and disassembler: Add full support for the LPIT table (Low Power
2477 Idle Table). Includes support in the disassembler, data table compiler,
2478 and template generator.
2481 1) Add option to force the use of the RSDT (over the XSDT).
2482 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2484 iASL: Add check for predefined packages that are too large. For
2485 predefined names that contain subpackages, check if each subpackage is
2486 too large. (Check for too small already exists.)
2488 Debugger: Updated the GPE command (which simulates a GPE by executing the
2489 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2490 to the GPE 0/1 FADT-defined blocks.
2492 Unix application OSL: Update line-editing support. Add additional error
2493 checking and take care not to reset terminal attributes on exit if they
2494 were never set. This should help guarantee that the terminal is always
2495 left in the previous state on program exit.
2498 ----------------------------------------
2499 25 March 2014. Summary of changes for version 20140325:
2501 1) ACPICA kernel-resident subsystem:
2503 Updated the auto-serialize feature for control methods. This feature
2504 automatically serializes all methods that create named objects in order
2505 to prevent runtime errors. The update adds support to ignore the
2506 currently executing AML SyncLevel when invoking such a method, in order
2507 to prevent disruption of any existing SyncLevel priorities that may exist
2508 in the AML code. Although the use of SyncLevels is relatively rare, this
2509 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2510 appear on some machines starting with the 20140214 release.
2512 Added a new external interface to allow the host to install ACPI tables
2513 very early, before the namespace is even created. AcpiInstallTable gives
2514 the host additional flexibility for ACPI table management. Tables can be
2515 installed directly by the host as if they had originally appeared in the
2516 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2517 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2518 with additional internal restructuring and cleanup. See the ACPICA
2519 Reference for interface details. Lv Zheng.
2521 Added validation of the checksum for all incoming dynamically loaded
2522 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2525 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2526 and GPE handler removal. Restructured calls to eliminate possible race
2527 conditions. Lv Zheng.
2529 Added a warning for the use/execution of the ASL/AML Unload (table)
2530 operator. This will help detect and identify machines that use this
2531 operator if and when it is ever used. This operator has never been seen
2532 in the field and the usage model and possible side-effects of the drastic
2533 runtime action of a full table removal are unknown.
2535 Reverted the use of #pragma push/pop which was introduced in the 20140214
2536 release. It appears that push and pop are not implemented by enough
2537 compilers to make the use of this feature feasible for ACPICA at this
2538 time. However, these operators may be deployed in a future ACPICA
2541 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2544 Source code generation:
2545 1) Disabled the use of the "strchr" macro for the gcc-specific
2546 generation. For some versions of gcc, this macro can periodically expose
2547 a compiler bug which in turn causes compile-time error(s).
2548 2) Added support for PPC64 compilation. Colin Ian King.
2550 Example Code and Data Size: These are the sizes for the OS-independent
2551 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2552 debug version of the code includes the debug output trace mechanism and
2553 has a much larger code and data size.
2556 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2557 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2559 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2560 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2563 2) iASL Compiler/Disassembler and Tools:
2565 Disassembler: Added several new features to improve the readability of
2566 the resulting ASL code. Extra information is emitted within comment
2567 fields in the ASL code:
2568 1) Known _HID/_CID values are decoded to descriptive text.
2569 2) Standard values for the Notify() operator are decoded to descriptive
2571 3) Target operands are expanded to full pathnames (in a comment) when
2574 Disassembler: Miscellaneous updates for extern() handling:
2575 1) Abort compiler if file specified by -fe option does not exist.
2576 2) Silence unnecessary warnings about argument count mismatches.
2577 3) Update warning messages concerning unresolved method externals.
2578 4) Emit "UnknownObj" keyword for externals whose type cannot be
2582 1) Added the -a option to display both the ASL syntax and the AML
2583 encoding for an input ASL operator. This effectively displays all known
2584 information about an ASL operator with one AcpiHelp invocation.
2585 2) Added substring match support (similar to a wildcard) for the -i
2586 (_HID/PNP IDs) option.
2588 iASL/Disassembler: Since this tool does not yet support execution on big-
2589 endian machines, added detection of endianness and an error message if
2590 execution is attempted on big-endian. Support for big-endian within iASL
2591 is a feature that is on the ACPICA to-be-done list.
2594 1) Remove option to extract binary files from an acpidump; this function
2595 is made obsolete by the AcpiXtract utility.
2596 2) General cleanup of open files and allocated buffers.
2599 ----------------------------------------
2600 14 February 2014. Summary of changes for version 20140214:
2602 1) ACPICA kernel-resident subsystem:
2604 Implemented a new mechanism to proactively prevent problems with ill-
2605 behaved reentrant control methods that create named ACPI objects. This
2606 behavior is illegal as per the ACPI specification, but is nonetheless
2607 frequently seen in the field. Previously, this could lead to an
2608 AE_ALREADY_EXISTS exception if the method was actually entered by more
2609 than one thread. This new mechanism detects such methods at table load
2610 time and marks them "serialized" to prevent reentrancy. A new global
2611 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2612 feature if desired. This mechanism and global option obsoletes and
2613 supersedes the previous AcpiGbl_SerializeAllMethods option.
2615 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2616 respond TRUE to _OSI queries with this string. It is the stated policy of
2617 ACPICA to add new strings to the _OSI support as soon as possible after
2618 they are defined. See the full ACPICA _OSI policy which has been added to
2619 the utilities/utosi.c file.
2621 Hardened/updated the _PRT return value auto-repair code:
2622 1) Do not abort the repair on a single subpackage failure, continue to
2623 check all subpackages.
2624 2) Add check for the minimum subpackage length (4).
2625 3) Properly handle extraneous NULL package elements.
2627 Added support to avoid the possibility of infinite loops when traversing
2628 object linked lists. Never allow an infinite loop, even in the face of
2629 corrupted object lists.
2631 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2632 pack(pop) directives to ensure that the ACPICA headers are independent of
2633 compiler settings or other host headers.
2635 Example Code and Data Size: These are the sizes for the OS-independent
2636 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2637 debug version of the code includes the debug output trace mechanism and
2638 has a much larger code and data size.
2641 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2642 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2644 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2645 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2648 2) iASL Compiler/Disassembler and Tools:
2650 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2651 first reserved field was incorrectly forced to have a value of zero. This
2652 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2654 Debugger: Added missing support for the "Extra" and "Data" subobjects
2655 when displaying object data.
2657 Debugger: Added support to display entire object linked lists when
2658 displaying object data.
2660 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2661 Windows registry. This feature has been superseded by the acpidump
2665 ----------------------------------------
2666 14 January 2014. Summary of changes for version 20140114:
2668 1) ACPICA kernel-resident subsystem:
2670 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2671 copyright to all module headers and signons, including the standard Linux
2672 header. This affects virtually every file in the ACPICA core subsystem,
2673 iASL compiler, all ACPICA utilities, and the test suites.
2675 Improved parameter validation for AcpiInstallGpeBlock. Added the
2677 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2678 2) There is not already a GPE block attached to the device.
2679 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2682 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2683 support to allow references (namespace nodes) to be passed as arguments
2684 to control methods via the evaluate object interface. This is probably
2685 most useful for testing purposes, however.
2687 Improved support for 32/64 bit physical addresses in printf()-like
2688 output. This change improves the support for physical addresses in printf
2689 debug statements and other output on both 32-bit and 64-bit hosts. It
2690 consistently outputs the appropriate number of bytes for each host. The
2691 %p specifier is unsatisfactory since it does not emit uniform output on
2692 all hosts/clib implementations (on some, leading zeros are not supported,
2693 leading to difficult-to-read output).
2695 Example Code and Data Size: These are the sizes for the OS-independent
2696 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2697 debug version of the code includes the debug output trace mechanism and
2698 has a much larger code and data size.
2701 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2702 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2704 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2705 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2708 2) iASL Compiler/Disassembler and Tools:
2710 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2711 problem if the parent Field definition for the Connection operator refers
2712 to an operation region that does not exist. ACPICA BZ 1064.
2714 AcpiExec: Load of local test tables is now optional. The utility has the
2715 capability to load some various tables to test features of ACPICA.
2716 However, there are enough of them that the output of the utility became
2717 confusing. With this change, only the required local tables are displayed
2718 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2719 line specification. This makes the default output simler and easier to
2720 understand. The -el command line option restores the original behavior
2721 for testing purposes.
2723 AcpiExec: Added support for overlapping operation regions. This change
2724 expands the simulation of operation regions by supporting regions that
2725 overlap within the given address space. Supports SystemMemory and
2726 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2728 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2729 allows AcpiExec to simulate these address spaces, similar to the current
2730 support for SystemMemory and SystemIO.
2732 Debugger: Added new command to read/write/compare all namespace objects.
2733 The command "test objects" will exercise the entire namespace by writing
2734 new values to each data object, and ensuring that the write was
2735 successful. The original value is then restored and verified.
2737 Debugger: Added the "test predefined" command. This change makes this
2738 test public and puts it under the new "test" command. The test executes
2739 each and every predefined name within the current namespace.
2742 ----------------------------------------
2743 18 December 2013. Summary of changes for version 20131218:
2745 Global note: The ACPI 5.0A specification was released this month. There
2746 are no changes needed for ACPICA since this release of ACPI is an
2747 errata/clarification release. The specification is available at
2751 1) ACPICA kernel-resident subsystem:
2753 Added validation of the XSDT root table if it is present. Some older
2754 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2755 as containing some or all entries that are NULL pointers). This change
2756 adds a new function to validate the XSDT before actually using it. If the
2757 XSDT is found to be invalid, ACPICA will now automatically fall back to
2758 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
2759 ACPICA and enhanced by Lv Zheng and Bob Moore.
2761 Added a runtime option to ignore the XSDT and force the use of the RSDT.
2762 This change adds a runtime option that will force ACPICA to use the RSDT
2763 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
2764 requires that an XSDT be used instead of the RSDT, the XSDT has been
2765 found to be corrupt or ill-formed on some machines. Lv Zheng.
2767 Added a runtime option to favor 32-bit FADT register addresses over the
2768 64-bit addresses. This change adds an option to favor 32-bit FADT
2769 addresses when there is a conflict between the 32-bit and 64-bit versions
2770 of the same register. The default behavior is to use the 64-bit version
2771 in accordance with the ACPI specification. This can now be overridden via
2772 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
2774 During the change above, the internal "Convert FADT" and "Verify FADT"
2775 functions have been merged to simplify the code, making it easier to
2776 understand and maintain. ACPICA BZ 933.
2778 Improve exception reporting and handling for GPE block installation.
2779 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
2780 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
2782 Added helper macros to extract bus/segment numbers from the HEST table.
2783 This change adds two macros to extract the encoded bus and segment
2784 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
2785 Betty Dall <betty.dall@hp.com>
2787 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
2788 by ACPICA. It is not a public macro, so it should have no effect on
2789 existing OSV code. Lv Zheng.
2791 Example Code and Data Size: These are the sizes for the OS-independent
2792 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2793 debug version of the code includes the debug output trace mechanism and
2794 has a much larger code and data size.
2797 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2798 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2800 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2801 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2804 2) iASL Compiler/Disassembler and Tools:
2806 Disassembler: Improved pathname support for emitted External()
2807 statements. This change adds full pathname support for external names
2808 that have been resolved internally by the inclusion of additional ACPI
2809 tables (via the iASL -e option). Without this change, the disassembler
2810 can emit multiple externals for the same object, or it become confused
2811 when the Scope() operator is used on an external object. Overall, greatly
2812 improves the ability to actually recompile the emitted ASL code when
2813 objects a referenced across multiple ACPI tables. Reported by Michael
2814 Tsirkin (mst@redhat.com).
2816 Tests/ASLTS: Updated functional control suite to execute with no errors.
2817 David Box. Fixed several errors related to the testing of the interpreter
2818 slack mode. Lv Zheng.
2820 iASL: Added support to detect names that are declared within a control
2821 method, but are unused (these are temporary names that are only valid
2822 during the time the method is executing). A remark is issued for these
2823 cases. ACPICA BZ 1022.
2825 iASL: Added full support for the DBG2 table. Adds full disassembler,
2826 table compiler, and template generator support for the DBG2 table (Debug
2829 iASL: Added full support for the PCCT table, update the table definition.
2830 Updates the PCCT table definition in the actbl3.h header and adds table
2831 compiler and template generator support.
2833 iASL: Added an option to emit only error messages (no warnings/remarks).
2834 The -ve option will enable only error messages, warnings and remarks are
2835 suppressed. This can simplify debugging when only the errors are
2836 important, such as when an ACPI table is disassembled and there are many
2837 warnings and remarks -- but only the actual errors are of real interest.
2839 Example ACPICA code (source/tools/examples): Updated the example code so
2840 that it builds to an actual working program, not just example code. Added
2841 ACPI tables and execution of an example control method in the DSDT. Added
2842 makefile support for Unix generation.
2845 ----------------------------------------
2846 15 November 2013. Summary of changes for version 20131115:
2848 This release is available at https://acpica.org/downloads
2851 1) ACPICA kernel-resident subsystem:
2853 Resource Manager: Fixed loop termination for the "get AML length"
2854 function. The loop previously had an error termination on a NULL resource
2855 pointer, which can never happen since the loop simply increments a valid
2856 resource pointer. This fix changes the loop to terminate with an error on
2857 an invalid end-of-buffer condition. The problem can be seen as an
2858 infinite loop by callers to AcpiSetCurrentResources with an invalid or
2859 corrupted resource descriptor, or a resource descriptor that is missing
2860 an END_TAG descriptor. Reported by Dan Carpenter
2861 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2863 Table unload and ACPICA termination: Delete all attached data objects
2864 during namespace node deletion. This fix updates namespace node deletion
2865 to delete the entire list of attached objects (attached via
2866 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2867 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2869 ACPICA termination: Added support to delete all objects attached to the
2870 root namespace node. This fix deletes any and all objects that have been
2871 attached to the root node via AcpiAttachData. Previously, none of these
2872 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2874 Debug output: Do not emit the function nesting level for the in-kernel
2875 build. The nesting level is really only useful during a single-thread
2876 execution. Therefore, only enable this output for the AcpiExec utility.
2877 Also, only emit the thread ID when executing under AcpiExec (Context
2878 switches are still always detected and a message is emitted). ACPICA BZ
2881 Example Code and Data Size: These are the sizes for the OS-independent
2882 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2883 debug version of the code includes the debug output trace mechanism and
2884 has a much larger code and data size.
2887 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2888 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2890 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2891 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2894 2) iASL Compiler/Disassembler and Tools:
2896 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2897 correct portable POSIX header for terminal control functions.
2899 Disassembler: Fixed control method invocation issues related to the use
2900 of the CondRefOf() operator. The problem is seen in the disassembly where
2901 control method invocations may not be disassembled properly if the
2902 control method name has been used previously as an argument to CondRefOf.
2903 The solution is to not attempt to emit an external declaration for the
2904 CondRefOf target (it is not necessary in the first place). This prevents
2905 disassembler object type confusion. ACPICA BZ 988.
2907 Unix Makefiles: Added an option to disable compiler optimizations and the
2908 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2909 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2910 command line option for make (NOOPT) that disables all compiler
2911 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2912 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2913 1034. Lv Zheng, Bob Moore.
2915 Tests/ASLTS: Added options to specify individual test cases and modes.
2916 This allows testers running aslts.sh to optionally specify individual
2917 test modes and test cases. Also added an option to disable the forced
2918 generation of the ACPICA tools from source if desired. Lv Zheng.
2920 ----------------------------------------
2921 27 September 2013. Summary of changes for version 20130927:
2923 This release is available at https://acpica.org/downloads
2926 1) ACPICA kernel-resident subsystem:
2928 Fixed a problem with store operations to reference objects. This change
2929 fixes a problem where a Store operation to an ArgX object that contained
2931 reference to a field object did not complete the automatic dereference
2933 then write to the actual field object. Instead, the object type of the
2934 field object was inadvertently changed to match the type of the source
2935 operand. The new behavior will actually write to the field object (buffer
2936 field or field unit), thus matching the correct ACPI-defined behavior.
2938 Implemented support to allow the host to redefine individual OSL
2939 prototypes. This change enables the host to redefine OSL prototypes found
2940 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2941 with a macro or inlined function. Further, it allows the host to add any
2942 additional required modifiers such as __iomem, __init, __exit, etc., as
2943 necessary on a per-interface basis. Enables maximum flexibility for the
2944 OSL interfaces. Lv Zheng.
2946 Hardcoded the access width for the FADT-defined reset register. The ACPI
2947 specification requires the reset register width to be 8 bits. ACPICA now
2948 hardcodes the width to 8 and ignores the FADT width value. This provides
2949 compatibility with other ACPI implementations that have allowed BIOS code
2950 with bad register width values to go unnoticed. Matthew Garett, Bob
2954 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2956 in the OSL header (acpiosxf). The change modifies the position of this
2957 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2958 build issues if the OSL defines the implementation of the interface to be
2959 an inline stub function. Lv Zheng.
2961 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2962 initialization interfaces. This change adds a new macro for the main init
2963 and terminate external interfaces in order to support hosts that require
2964 additional or different processing for these functions. Changed from
2965 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2968 Cleaned up the memory allocation macros for configurability. In the
2970 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2971 respective AcpiOs* OSL interfaces. Two options:
2972 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2973 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2974 2) For AcpiExec (and for debugging), the macros can optionally be
2976 to the local ACPICA interfaces that track each allocation (local tracking
2977 is used to immediately detect memory leaks).
2980 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2981 to predefine this macro to either TRUE or FALSE during the system build.
2983 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2985 Example Code and Data Size: These are the sizes for the OS-independent
2986 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2987 debug version of the code includes the debug output trace mechanism and
2988 has a much larger code and data size.
2991 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2992 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2994 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2995 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2998 2) iASL Compiler/Disassembler and Tools:
3000 iASL: Implemented wildcard support for the -e option. This simplifies use
3001 when there are many SSDTs that must be included to resolve external
3003 declarations. ACPICA BZ 1041. Example:
3004 iasl -e ssdt*.dat -d dsdt.dat
3006 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3007 adds a portable module that implements full history and limited line
3008 editing for Unix and Linux systems. It does not use readline() due to
3009 portability issues. Instead it uses the POSIX termio interface to put the
3010 terminal in raw input mode so that the various special keys can be
3012 (such as up/down-arrow for history support and left/right-arrow for line
3013 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3015 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3016 one or more spaces. This provides compatible with early or different
3017 versions of the AcpiDump utility. ACPICA BZ 1044.
3019 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3020 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3021 no other data. This change adds support to dump these tables. Any tables
3022 shorter than the length of an ACPI table header remain in error (an error
3023 message is emitted). Reported by Yi Li.
3025 Debugger: Echo actual command along with the "unknown command" message.
3027 ----------------------------------------
3028 23 August 2013. Summary of changes for version 20130823:
3030 1) ACPICA kernel-resident subsystem:
3032 Implemented support for host-installed System Control Interrupt (SCI)
3033 handlers. Certain ACPI functionality requires the host to handle raw
3034 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3035 state support requires the host device driver to handle SCIs to examine
3036 if the doorbell has been activated. Multiple SCI handlers can be
3037 installed to allow for future expansion. New external interfaces are
3038 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3039 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3041 Operation region support: Never locally free the handler "context"
3042 pointer. This change removes some dangerous code that attempts to free
3043 the handler context pointer in some (rare) circumstances. The owner of
3044 the handler owns this pointer and the ACPICA code should never touch it.
3045 Although not seen to be an issue in any kernel, it did show up as a
3046 problem (fault) under AcpiExec. Also, set the internal storage field for
3047 the context pointer to zero when the region is deactivated, simply for
3048 sanity. David Box. ACPICA BZ 1039.
3050 AcpiRead: On error, do not modify the return value target location. If an
3051 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3052 modify the target of the return value pointer. Makes the code consistent
3053 with the rest of ACPICA. Bjorn Helgaas.
3055 Example Code and Data Size: These are the sizes for the OS-independent
3056 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3057 debug version of the code includes the debug output trace mechanism and
3058 has a much larger code and data size.
3061 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3062 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3064 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3065 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3068 2) iASL Compiler/Disassembler and Tools:
3070 AcpiDump: Implemented several new features and fixed some problems:
3071 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3072 2) Added support for multiple table instances (SSDT, UEFI).
3073 3) Added option to dump "customized" (overridden) tables (-c).
3074 4) Fixed a problem where some table filenames were improperly
3076 5) Improved some error messages, removed some unnecessary messages.
3078 iASL: Implemented additional support for disassembly of ACPI tables that
3079 contain invocations of external control methods. The -fe<file> option
3080 allows the import of a file that specifies the external methods along
3081 with the required number of arguments for each -- allowing for the
3082 correct disassembly of the table. This is a workaround for a limitation
3083 of AML code where the disassembler often cannot determine the number of
3084 arguments required for an external control method and generates incorrect
3085 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3087 Debugger: Implemented a new command (paths) that displays the full
3088 pathnames (namepaths) and object types of all objects in the namespace.
3089 This is an alternative to the namespace command.
3091 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3092 mechanism and any installed handlers.
3094 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3095 This can occur if there are too many parent prefixes in a namepath (for
3096 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3098 Application OSLs: Set the return value for the PCI read functions. These
3099 functions simply return AE_OK, but should set the return value to zero
3100 also. This change implements this. ACPICA BZ 1038.
3102 Debugger: Prevent possible command line buffer overflow. Increase the
3103 size of a couple of the debugger line buffers, and ensure that overflow
3104 cannot happen. ACPICA BZ 1037.
3106 iASL: Changed to abort immediately on serious errors during the parsing
3107 phase. Due to the nature of ASL, there is no point in attempting to
3108 compile these types of errors, and they typically end up causing a
3109 cascade of hundreds of errors which obscure the original problem.
3111 ----------------------------------------
3112 25 July 2013. Summary of changes for version 20130725:
3114 1) ACPICA kernel-resident subsystem:
3116 Fixed a problem with the DerefOf operator where references to FieldUnits
3117 and BufferFields incorrectly returned the parent object, not the actual
3118 value of the object. After this change, a dereference of a FieldUnit
3119 reference results in a read operation on the field to get the value, and
3120 likewise, the appropriate BufferField value is extracted from the target
3123 Fixed a problem where the _WAK method could cause a fault under these
3124 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3125 method returned no value. The problem is rarely seen because most kernels
3126 run ACPICA in slack mode.
3128 For the DerefOf operator, a fatal error now results if an attempt is made
3129 to dereference a reference (created by the Index operator) to a NULL
3130 package element. Provides compatibility with other ACPI implementations,
3131 and this behavior will be added to a future version of the ACPI
3134 The ACPI Power Management Timer (defined in the FADT) is now optional.
3135 This provides compatibility with other ACPI implementations and will
3136 appear in the next version of the ACPI specification. If there is no PM
3137 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3138 zero in the FADT indicates no PM timer.
3140 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3141 allows the host to globally enable/disable all vendor strings, all
3142 feature strings, or both. Intended to be primarily used for debugging
3143 purposes only. Lv Zheng.
3145 Expose the collected _OSI data to the host via a global variable. This
3146 data tracks the highest level vendor ID that has been invoked by the BIOS
3147 so that the host (and potentially ACPICA itself) can change behaviors
3148 based upon the age of the BIOS.
3150 Example Code and Data Size: These are the sizes for the OS-independent
3151 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3152 debug version of the code includes the debug output trace mechanism and
3153 has a much larger code and data size.
3156 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3157 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3159 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3160 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3163 2) iASL Compiler/Disassembler and Tools:
3165 iASL: Created the following enhancements for the -so option (create
3167 1)Add offsets for the last nameseg in each namepath for every supported
3169 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3170 3)Add the actual AML opcode for the parent object of every supported
3172 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3174 Disassembler: Emit all unresolved external symbols in a single block.
3175 These are external references to control methods that could not be
3176 resolved, and thus, the disassembler had to make a guess at the number of
3179 iASL: The argument to the -T option (create table template) is now
3180 optional. If not specified, the default table is a DSDT, typically the
3183 ----------------------------------------
3184 26 June 2013. Summary of changes for version 20130626:
3186 1) ACPICA kernel-resident subsystem:
3188 Fixed an issue with runtime repair of the _CST object. Null or invalid
3189 elements were not always removed properly. Lv Zheng.
3191 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3192 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3193 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3194 makes the system-wide number of GPEs essentially unlimited.
3196 Example Code and Data Size: These are the sizes for the OS-independent
3197 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3198 debug version of the code includes the debug output trace mechanism and
3199 has a much larger code and data size.
3202 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3203 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3205 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3206 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3209 2) iASL Compiler/Disassembler and Tools:
3211 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3212 hosts. Now supports Linux, FreeBSD, and Windows.
3214 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3215 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3217 iASL/Preprocessor: Implemented full support for nested
3218 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3220 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3221 max. The original purpose of this constraint was to limit the amount of
3222 debug output. However, the string function in question (UtPrintString) is
3223 now used for the disassembler also, where 256 bytes is insufficient.
3224 Reported by RehabMan@GitHub.
3226 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3227 tables. ACPICA BZ 999. Lv Zheng.
3229 iASL: Fixed a couple of error exit issues that could result in a "Could
3230 not delete <file>" message during ASL compilation.
3232 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3233 the actual signatures for these tables are "FACP" and "APIC",
3236 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3237 tables are allowed to have multiple instances.
3239 ----------------------------------------
3240 17 May 2013. Summary of changes for version 20130517:
3242 1) ACPICA kernel-resident subsystem:
3244 Fixed a regression introduced in version 20130328 for _INI methods. This
3245 change fixes a problem introduced in 20130328 where _INI methods are no
3246 longer executed properly because of a memory block that was not
3247 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3248 <tomasz.nowicki@linaro.org>.
3250 Fixed a possible problem with the new extended sleep registers in the
3252 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3253 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3256 Implemented return value repair code for _CST predefined objects: Sort
3258 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3260 Implemented a debug-only option to disable loading of SSDTs from the
3261 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3262 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3263 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3265 Fixed some issues in the ACPICA initialization and termination code:
3266 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3267 1) Clear events initialized flag upon event component termination. ACPICA
3269 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3270 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3271 4) Clear debug buffer global on termination to prevent possible multiple
3272 delete. ACPICA BZ 1010.
3274 Standardized all switch() blocks across the entire source base. After
3276 years, different formatting for switch() had crept in. This change makes
3277 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3279 Split some files to enhance ACPICA modularity and configurability:
3280 1) Split buffer dump routines into utilities/utbuffer.c
3281 2) Split internal error message routines into utilities/uterror.c
3282 3) Split table print utilities into tables/tbprint.c
3283 4) Split iASL command-line option processing into asloptions.c
3285 Makefile enhancements:
3286 1) Support for all new files above.
3287 2) Abort make on errors from any subcomponent. Chao Guan.
3288 3) Add build support for Apple Mac OS X. Liang Qi.
3290 Example Code and Data Size: These are the sizes for the OS-independent
3291 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3292 debug version of the code includes the debug output trace mechanism and
3293 has a much larger code and data size.
3296 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3297 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3299 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3300 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3303 2) iASL Compiler/Disassembler and Tools:
3305 New utility: Implemented an easily portable version of the acpidump
3306 utility to extract ACPI tables from the system (or a file) in an ASCII
3308 dump format. The top-level code implements the various command line
3309 options, file I/O, and table dump routines. To port to a new host, only
3310 three functions need to be implemented to get tables -- since this
3311 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3312 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3313 1) The Windows version obtains the ACPI tables from the Registry.
3314 2) The Linux version is under development.
3315 3) Other hosts - If an OS-dependent module is submitted, it will be
3316 distributed with ACPICA.
3318 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3319 restructuring/change to the initialization sequence caused this option to
3320 no longer work properly.
3322 iASL: Implemented a mechanism to disable specific warnings and remarks.
3323 Adds a new command line option, "-vw <messageid> as well as "#pragma
3324 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3326 iASL: Fix for too-strict package object validation. The package object
3327 validation for return values from the predefined names is a bit too
3328 strict, it does not allow names references within the package (which will
3329 be resolved at runtime.) These types of references cannot be validated at
3330 compile time. This change ignores named references within package objects
3331 for names that return or define static packages.
3333 Debugger: Fixed the 80-character command line limitation for the History
3334 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3336 iASL: Added control method and package support for the -so option
3337 (generates AML offset table for BIOS support.)
3339 iASL: issue a remark if a non-serialized method creates named objects. If
3340 a thread blocks within the method for any reason, and another thread
3341 enters the method, the method will fail because an attempt will be made
3343 create the same (named) object twice. In this case, issue a remark that
3344 the method should be marked serialized. NOTE: may become a warning later.
3347 ----------------------------------------
3348 18 April 2013. Summary of changes for version 20130418:
3350 1) ACPICA kernel-resident subsystem:
3352 Fixed a possible buffer overrun during some rare but specific field unit
3353 read operations. This overrun can only happen if the DSDT version is 1 --
3354 meaning that all AML integers are 32 bits -- and the field length is
3355 between 33 and 55 bits long. During the read, an internal buffer object
3357 created for the field unit because the field is larger than an integer
3359 bits). However, in this case, the buffer will be incorrectly written
3360 beyond the end because the buffer length is less than the internal
3362 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3363 long, but a full 8 bytes will be written.
3365 Updated the Embedded Controller "orphan" _REG method support. This refers
3366 to _REG methods under the EC device that have no corresponding operation
3367 region. This is allowed by the ACPI specification. This update removes a
3368 dependency on the existence an ECDT table. It will execute an orphan _REG
3369 method as long as the operation region handler for the EC is installed at
3370 the EC device node and not the namespace root. Rui Zhang (original
3371 update), Bob Moore (update/integrate).
3373 Implemented run-time argument typechecking for all predefined ACPI names
3374 (_STA, _BIF, etc.) This change performs object typechecking on all
3375 incoming arguments for all predefined names executed via
3376 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3377 passing correct object types as well as the correct number of arguments
3378 (therefore identifying any issues immediately). Also, the ASL/namespace
3379 definition of the predefined name is checked against the ACPI
3380 specification for the proper argument count. Adds one new file,
3383 Changed an exception code for the ASL UnLoad() operator. Changed the
3384 exception code for the case where the input DdbHandle is invalid, from
3385 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3387 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3388 global makefile. The use of this flag causes compiler errors on earlier
3389 versions of GCC, so it has been removed for compatibility.
3391 Miscellaneous cleanup:
3392 1) Removed some unused/obsolete macros
3393 2) Fixed a possible memory leak in the _OSI support
3394 3) Removed an unused variable in the predefined name support
3395 4) Windows OSL: remove obsolete reference to a memory list field
3397 Example Code and Data Size: These are the sizes for the OS-independent
3398 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3399 debug version of the code includes the debug output trace mechanism and
3400 has a much larger code and data size.
3403 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3404 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3406 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3407 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3410 2) iASL Compiler/Disassembler and Tools:
3412 AcpiExec: Added installation of a handler for the SystemCMOS address
3413 space. This prevents control method abort if a method accesses this
3416 AcpiExec: Added support for multiple EC devices, and now install EC
3417 operation region handler(s) at the actual EC device instead of the
3418 namespace root. This reflects the typical behavior of host operating
3421 AcpiExec: Updated to ensure that all operation region handlers are
3422 installed before the _REG methods are executed. This prevents a _REG
3423 method from aborting if it accesses an address space has no handler.
3424 AcpiExec installs a handler for every possible address space.
3426 Debugger: Enhanced the "handlers" command to display non-root handlers.
3427 This change enhances the handlers command to display handlers associated
3428 with individual devices throughout the namespace, in addition to the
3429 currently supported display of handlers associated with the root
3433 ASL Test Suite: Several test suite errors have been identified and
3434 resolved, reducing the total error count during execution. Chao Guan.
3436 ----------------------------------------
3437 28 March 2013. Summary of changes for version 20130328:
3439 1) ACPICA kernel-resident subsystem:
3441 Fixed several possible race conditions with the internal object reference
3442 counting mechanism. Some of the external ACPICA interfaces update object
3443 reference counts without holding the interpreter or namespace lock. This
3444 change adds a spinlock to protect reference count updates on the internal
3445 ACPICA objects. Reported by and with assistance from Andriy Gapon
3448 FADT support: Removed an extraneous warning for very large GPE register
3449 sets. This change removes a size mismatch warning if the legacy length
3450 field for a GPE register set is larger than the 64-bit GAS structure can
3451 accommodate. GPE register sets can be larger than the 255-bit width
3452 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3454 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3455 return from this interface. Handles a possible timeout case if
3456 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3457 "forever". Jung-uk Kim.
3459 Predefined name support: Add allowed/required argument type information
3461 the master predefined info table. This change adds the infrastructure to
3462 enable typechecking on incoming arguments for all predefined
3463 methods/objects. It does not actually contain the code that will fully
3464 utilize this information, this is still under development. Also condenses
3465 some duplicate code for the predefined names into a new module,
3466 utilities/utpredef.c
3468 Example Code and Data Size: These are the sizes for the OS-independent
3469 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3470 debug version of the code includes the debug output trace mechanism and
3471 has a much larger code and data size.
3474 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3475 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3477 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3478 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3481 2) iASL Compiler/Disassembler and Tools:
3483 iASL: Implemented a new option to simplify the development of ACPI-
3485 BIOS code. Adds support for a new "offset table" output file. The -so
3486 option will create a C table containing the AML table offsets of various
3487 named objects in the namespace so that BIOS code can modify them easily
3489 boot time. This can simplify BIOS runtime code by eliminating expensive
3490 searches for "magic values", enhancing boot times and adding greater
3491 reliability. With assistance from Lee Hamel.
3493 iASL: Allow additional predefined names to return zero-length packages.
3494 Now, all predefined names that are defined by the ACPI specification to
3495 return a "variable-length package of packages" are allowed to return a
3496 zero length top-level package. This allows the BIOS to tell the host that
3497 the requested feature is not supported, and supports existing BIOS/ASL
3500 iASL: Changed the "result not used" warning to an error. This is the case
3501 where an ASL operator is effectively a NOOP because the result of the
3502 operation is not stored anywhere. For example:
3504 There is no target (missing 3rd argument), nor is the function return
3505 value used. This is potentially a very serious problem -- since the code
3506 was probably intended to do something, but for whatever reason, the value
3507 was not stored. Therefore, this issue has been upgraded from a warning to
3510 AcpiHelp: Added allowable/required argument types to the predefined names
3511 info display. This feature utilizes the recent update to the predefined
3512 names table (above).
3514 ----------------------------------------
3515 14 February 2013. Summary of changes for version 20130214:
3517 1) ACPICA Kernel-resident Subsystem:
3519 Fixed a possible regression on some hosts: Reinstated the safe return
3520 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3521 evaluated only once. Although these macros are not needed for the ACPICA
3522 code itself, they are often used by ACPI-related host device drivers
3524 the safe feature may be necessary.
3526 Fixed several issues related to the ACPI 5.0 reduced hardware support
3527 (SOC): Now ensure that if the platform declares itself as hardware-
3529 via the FADT, the following functions become NOOPs (and always return
3530 AE_OK) because ACPI is always enabled by definition on these machines:
3536 Dynamic Object Repair: Implemented additional runtime repairs for
3537 predefined name return values. Both of these repairs can simplify code in
3538 the related device drivers that invoke these methods:
3539 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3540 string to a Unicode buffer.
3541 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3543 lone end tag descriptor in the following cases: A Return(0) was executed,
3544 a null buffer was returned, or no object at all was returned (non-slack
3545 mode only). Adds a new file, nsconvert.c
3546 ACPICA BZ 998. Bob Moore, Lv Zheng.
3548 Resource Manager: Added additional code to prevent possible infinite
3550 while traversing corrupted or ill-formed resource template buffers. Check
3551 for zero-length resource descriptors in all code that loops through
3552 resource templates (the length field is used to index through the
3553 template). This change also hardens the external AcpiWalkResources and
3554 AcpiWalkResourceBuffer interfaces.
3556 Local Cache Manager: Enhanced the main data structure to eliminate an
3557 unnecessary mechanism to access the next object in the list. Actually
3558 provides a small performance enhancement for hosts that use the local
3559 ACPICA cache manager. Jung-uk Kim.
3561 Example Code and Data Size: These are the sizes for the OS-independent
3562 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3563 debug version of the code includes the debug output trace mechanism and
3564 has a much larger code and data size.
3567 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3568 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3570 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3571 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3574 2) iASL Compiler/Disassembler and Tools:
3576 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3577 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3578 that were made to the ACPI 5.0 specification.
3580 iASL/Disassembler: Added full support for the following new ACPI tables:
3581 1) The MTMR table (MID Timer Table)
3582 2) The VRTC table (Virtual Real Time Clock Table).
3583 Includes header file, disassembler, table compiler, and template support
3586 iASL: Implemented compile-time validation of package objects returned by
3587 predefined names. This new feature validates static package objects
3588 returned by the various predefined names defined to return packages. Both
3589 object types and package lengths are validated, for both parent packages
3590 and sub-packages, if any. The code is similar in structure and behavior
3592 the runtime repair mechanism within the AML interpreter and uses the
3593 existing predefined name information table. Adds a new file, aslprepkg.c.
3596 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3597 This feature detects a binary file with a valid ACPI table header and
3598 invokes the disassembler automatically. Eliminates the need to
3599 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3601 iASL/Disassembler: Added several warnings for the case where there are
3602 unresolved control methods during the disassembly. This can potentially
3603 cause errors when the output file is compiled, because the disassembler
3604 assumes zero method arguments in these cases (it cannot determine the
3605 actual number of arguments without resolution/definition of the method).
3607 Debugger: Added support to display all resources with a single command.
3608 Invocation of the resources command with no arguments will now display
3610 resources within the current namespace.
3612 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3615 ----------------------------------------
3616 17 January 2013. Summary of changes for version 20130117:
3618 1) ACPICA Kernel-resident Subsystem:
3620 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3621 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3622 objects to return a package containing one integer, most BIOS code
3624 two integers and the previous code reflects that. However, we also need
3626 support BIOS code that actually implements to the ACPI spec, and this
3627 change reflects this.
3629 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3630 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3631 C compilers that require this support.
3632 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3633 ACPI_DEBUG is already used by many of the various hosts.
3635 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3636 copyright to all module headers and signons, including the standard Linux
3637 header. This affects virtually every file in the ACPICA core subsystem,
3638 iASL compiler, all ACPICA utilities, and the test suites.
3640 Example Code and Data Size: These are the sizes for the OS-independent
3641 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3642 debug version of the code includes the debug output trace mechanism and
3643 has a much larger code and data size.
3646 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3647 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3649 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3650 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3653 2) iASL Compiler/Disassembler and Tools:
3655 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3656 prevent a possible fault on some hosts. Some C libraries modify the arg
3657 pointer parameter to vfprintf making it difficult to call it twice in the
3658 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3659 does not affect the Windows OSL since the Win C library does not modify
3660 the arg pointer. Chao Guan, Bob Moore.
3662 iASL: Fixed a possible infinite loop when the maximum error count is
3663 reached. If an output file other than the .AML file is specified (such as
3664 a listing file), and the maximum number of errors is reached, do not
3665 attempt to flush data to the output file(s) as the compiler is aborting.
3666 This can cause an infinite loop as the max error count code essentially
3667 keeps calling itself.
3669 iASL/Disassembler: Added an option (-in) to ignore NOOP
3671 Implemented for both the compiler and the disassembler. Often, the NOOP
3672 opcode is used as padding for packages that are changed dynamically by
3674 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3675 errors. This option causes the disassembler to ignore all NOOP opcodes
3676 (0xA3), and it also causes the compiler to ignore all ASL source code
3680 Debugger: Enhanced the Sleep command to execute all sleep states. This
3681 change allows Sleep to be invoked with no arguments and causes the
3682 debugger to execute all of the sleep states, 0-5, automatically.
3684 ----------------------------------------
3685 20 December 2012. Summary of changes for version 20121220:
3687 1) ACPICA Kernel-resident Subsystem:
3689 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3690 alternate entry point for AcpiWalkResources and improves the usability of
3691 the resource manager by accepting as input a buffer containing the output
3692 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3693 input buffer is not deleted by this interface so that it can be used by
3694 the host later. See the ACPICA reference for details.
3696 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3697 (DSDT version < 2). The constant will be truncated and this warning
3698 reflects that behavior.
3700 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3701 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3702 both get and set the new wake bit in these descriptors, separately from
3703 the existing share bit. Reported by Aaron Lu.
3705 Interpreter: Fix Store() when an implicit conversion is not possible. For
3706 example, in the cases such as a store of a string to an existing package
3707 object, implement the store as a CopyObject(). This is a small departure
3708 from the ACPI specification which states that the control method should
3710 aborted in this case. However, the ASLTS suite depends on this behavior.
3712 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3713 macros: check if debug output is currently enabled as soon as possible to
3714 minimize performance impact if debug is in fact not enabled.
3716 Source code restructuring: Cleanup to improve modularity. The following
3717 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3718 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3719 Associated makefiles and project files have been updated.
3721 Changed an exception code for LoadTable operator. For the case where one
3722 of the input strings is too long, change the returned exception code from
3723 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3725 Fixed a possible memory leak in dispatcher error path. On error, delete
3726 the mutex object created during method mutex creation. Reported by
3727 tim.gardner@canonical.com.
3729 Example Code and Data Size: These are the sizes for the OS-independent
3730 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3731 debug version of the code includes the debug output trace mechanism and
3732 has a much larger code and data size.
3735 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3736 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3738 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3739 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3742 2) iASL Compiler/Disassembler and Tools:
3744 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3745 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3746 will not allow the interpreter to differentiate between a method and a
3747 method invocation when these are used as an argument to the ObjectType
3748 operator. The ACPI specification change is to disallow a method
3750 (UserTerm) for the ObjectType operator.
3752 Finish support for the TPM2 and CSRT tables in the headers, table
3753 compiler, and disassembler.
3755 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3756 always expires immediately if the semaphore is not available. The
3758 code was using a relative-time timeout, but sem_timedwait requires the
3760 of an absolute time.
3762 iASL: Added a remark if the Timer() operator is used within a 32-bit
3763 table. This operator returns a 64-bit time value that will be truncated
3764 within a 32-bit table.
3766 iASL Source code restructuring: Cleanup to improve modularity. The
3767 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
3768 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
3772 ----------------------------------------
3773 14 November 2012. Summary of changes for version 20121114:
3775 1) ACPICA Kernel-resident Subsystem:
3777 Implemented a performance enhancement for ACPI/AML Package objects. This
3778 change greatly increases the performance of Package objects within the
3779 interpreter. It changes the processing of reference counts for packages
3781 optimizing for the most common case where the package sub-objects are
3782 either Integers, Strings, or Buffers. Increases the overall performance
3784 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
3786 Chao Guan. ACPICA BZ 943.
3788 Implemented and deployed common macros to extract flag bits from resource
3789 descriptors. Improves readability and maintainability of the code. Fixes
3791 problem with the UART serial bus descriptor for the number of data bits
3792 flags (was incorrectly 2 bits, should be 3).
3794 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
3795 of the macros and changed the SETx macros to the style of (destination,
3796 source). Also added ACPI_CASTx companion macros. Lv Zheng.
3798 Example Code and Data Size: These are the sizes for the OS-independent
3799 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3800 debug version of the code includes the debug output trace mechanism and
3801 has a much larger code and data size.
3804 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3805 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3807 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3808 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3811 2) iASL Compiler/Disassembler and Tools:
3813 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
3814 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
3815 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
3817 Disassembler: Fixed a problem with external declaration generation. Fixes
3818 a problem where an incorrect pathname could be generated for an external
3819 declaration if the original reference to the object includes leading
3820 carats (^). ACPICA BZ 984.
3822 Debugger: Completed a major update for the Disassemble<method> command.
3823 This command was out-of-date and did not properly disassemble control
3824 methods that had any reasonable complexity. This fix brings the command
3826 to the same level as the rest of the disassembler. Adds one new file,
3827 dmdeferred.c, which is existing code that is now common with the main
3828 disassembler and the debugger disassemble command. ACPICA MZ 978.
3830 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
3831 Newer versions of Bison emit this prototype, so moved the prototype out
3833 the iASL header to where it is actually used in order to avoid a
3837 iASL/Tools: Standardized use of the stream I/O functions:
3838 1) Ensure check for I/O error after every fopen/fread/fwrite
3839 2) Ensure proper order of size/count arguments for fread/fwrite
3840 3) Use test of (Actual != Requested) after all fwrite, and most fread
3841 4) Standardize I/O error messages
3842 Improves reliability and maintainability of the code. Bob Moore, Lv
3846 Disassembler: Prevent duplicate External() statements. During generation
3847 of external statements, detect similar pathnames that are actually
3848 duplicates such as these:
3851 Remove all leading '\' characters from pathnames during the external
3852 statement generation so that duplicates will be detected and tossed.
3855 Tools: Replace low-level I/O with stream I/O functions. Replace
3856 open/read/write/close with the stream I/O equivalents
3857 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
3860 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3861 name header so that AcpiXtract recognizes the output file/table.
3863 iASL: Remove obsolete -2 option flag. Originally intended to force the
3864 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3865 and the entire concept is now obsolete.
3867 ----------------------------------------
3868 18 October 2012. Summary of changes for version 20121018:
3871 1) ACPICA Kernel-resident Subsystem:
3873 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3874 introduced by late changes to the table as it was added to the ACPI 5.0
3875 specification. Includes header, disassembler, and data table compiler
3876 support as well as a new version of the MPST template.
3878 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3879 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3880 methods: _HID, _CID, and _UID.
3882 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3883 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3884 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3885 names for their various drivers. Affects the AcpiGetObjectInfo external
3886 interface, and other internal interfaces as well.
3888 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3889 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3890 on machines that support non-aligned transfers. Optimizes for this case
3891 rather than using a strncpy. With assistance from Zheng Lv.
3893 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3894 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3896 Added a new debug print message for AML mutex objects that are force-
3897 released. At control method termination, any currently acquired mutex
3898 objects are force-released. Adds a new debug-only message for each one
3901 Audited/updated all ACPICA return macros and the function debug depth
3902 counter: 1) Ensure that all functions that use the various TRACE macros
3903 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3904 return statements surround the return expression (value) with parens to
3905 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3906 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3908 Global source code changes/maintenance: All extra lines at the start and
3909 end of each source file have been removed for consistency. Also, within
3910 comments, all new sentences start with a single space instead of a double
3911 space, again for consistency across the code base.
3913 Example Code and Data Size: These are the sizes for the OS-independent
3914 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3915 debug version of the code includes the debug output trace mechanism and
3916 has a much larger code and data size.
3919 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3920 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3922 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3923 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3926 2) iASL Compiler/Disassembler and Tools:
3928 AcpiExec: Improved the algorithm used for memory leak/corruption
3929 detection. Added some intelligence to the code that maintains the global
3930 list of allocated memory. The list is now ordered by allocated memory
3931 address, significantly improving performance. When running AcpiExec on
3932 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3933 on the platform and/or the environment. Note, this performance
3934 enhancement affects the AcpiExec utility only, not the kernel-resident
3937 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3938 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3939 incorrect table offset reported for invalid opcodes. Report the original
3940 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3942 Disassembler: Enhanced the -vt option to emit the binary table data in
3943 hex format to assist with debugging.
3945 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3946 size of file structure. Colin Ian King.
3948 ----------------------------------------
3949 13 September 2012. Summary of changes for version 20120913:
3952 1) ACPICA Kernel-resident Subsystem:
3954 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3955 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3959 Table Manager: Merged/removed duplicate code in the root table resize
3960 functions. One function is external, the other is internal. Lv Zheng,
3964 Makefiles: Completely removed the obsolete "Linux" makefiles under
3965 acpica/generate/linux. These makefiles are obsolete and have been
3968 the generic unix makefiles under acpica/generate/unix.
3970 Makefiles: Ensure that binary files always copied properly. Minor rule
3972 to ensure that the final binary output files are always copied up to the
3973 appropriate binary directory (bin32 or bin64.)
3975 Example Code and Data Size: These are the sizes for the OS-independent
3976 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3978 version of the code includes the debug output trace mechanism and has a
3980 larger code and data size.
3983 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3984 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3986 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3987 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3990 2) iASL Compiler/Disassembler and Tools:
3992 Disassembler: Fixed a possible fault during the disassembly of resource
3993 descriptors when a second parse is required because of the invocation of
3994 external control methods within the table. With assistance from
3995 adq@lidskialf.net. ACPICA BZ 976.
3997 iASL: Fixed a namepath optimization problem. An error can occur if the
3999 node that contains the namepath to be optimized does not have a parent
4001 that is a named object. This change fixes the problem.
4003 iASL: Fixed a regression where the AML file is not deleted on errors. The
4005 output file should be deleted if there are any errors during the
4008 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4010 iASL: Added a feature to automatically increase internal line buffer
4012 Via realloc(), automatically increase the internal line buffer sizes as
4013 necessary to support very long source code lines. The current version of
4015 preprocessor requires a buffer long enough to contain full source code
4017 This change increases the line buffer(s) if the input lines go beyond the
4018 current buffer size. This eliminates errors that occurred when a source
4020 line was longer than the buffer.
4022 iASL: Fixed a problem with constant folding in method declarations. The
4023 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4025 Type3 opcode was used.
4027 Debugger: Improved command help support. For incorrect argument count,
4029 full help for the command. For help command itself, allow an argument to
4032 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4033 errors during execution of the suite. Guan Chao.
4035 ----------------------------------------
4036 16 August 2012. Summary of changes for version 20120816:
4039 1) ACPICA Kernel-resident Subsystem:
4041 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4043 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4044 deprecated and will probably be removed from the ACPI specification.
4046 does not invoke them, and reportedly never will. The final nail in the
4048 is that the ACPI specification states that these methods must be run with
4049 interrupts off, which is not going to happen in a kernel interpreter.
4051 Linux has removed all use of the methods also. It was discovered that
4052 invoking these functions caused failures on some machines, probably
4054 they were never tested since Windows does not call them. Affects two
4056 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4059 Implemented support for complex bit-packed buffers returned from the _PLD
4060 (Physical Location of Device) predefined method. Adds a new external
4061 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4063 structure. Note: C Bitfields cannot be used for this type of predefined
4064 structure since the memory layout of individual bitfields is not defined
4066 the C language. In addition, there are endian concerns where a compiler
4068 change the bitfield ordering based on the machine type. The new ACPICA
4069 interface eliminates these issues, and should be called after _PLD is
4070 executed. ACPICA BZ 954.
4072 Implemented a change to allow a scope change to root (via "Scope (\)")
4074 execution of module-level ASL code (code that is executed at table load
4077 Added the Windows8/Server2012 string for the _OSI method. This change
4080 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4083 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4085 and CSRT (Core System Resource Table).
4087 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4088 names. This simplifies access to the buffers returned by these predefined
4089 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4091 GPE support: Removed an extraneous parameter from the various low-level
4092 internal GPE functions. Tang Feng.
4094 Removed the linux makefiles from the unix packages. The generate/linux
4095 makefiles are obsolete and have been removed from the unix tarball
4097 packages. The replacement makefiles are under generate/unix, and there is
4099 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4101 Updates for Unix makefiles:
4102 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4103 2) Update linker flags (move to end of command line) for AcpiExec
4107 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4108 utxface.c to improve modularity and reduce file size.
4110 Example Code and Data Size: These are the sizes for the OS-independent
4111 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4112 debug version of the code includes the debug output trace mechanism and
4114 much larger code and data size.
4117 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4118 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4120 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4121 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4124 2) iASL Compiler/Disassembler and Tools:
4126 iASL: Fixed a problem with constant folding for fixed-length constant
4127 expressions. The constant-folding code was not being invoked for constant
4128 expressions that allow the use of type 3/4/5 opcodes to generate
4130 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4132 in the generation of invalid AML bytecode. ACPICA BZ 970.
4134 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4135 apparently automatically emit some of the necessary externals. This
4137 handles these versions in order to eliminate generation warnings.
4139 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4141 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4143 within comments in the output file.
4145 Debugger: Fixed a regression with the "Threads" command where
4146 AE_BAD_PARAMETER was always returned.
4148 ----------------------------------------
4149 11 July 2012. Summary of changes for version 20120711:
4151 1) ACPICA Kernel-resident Subsystem:
4153 Fixed a possible fault in the return package object repair code. Fixes a
4154 problem that can occur when a lone package object is wrapped with an
4156 package object in order to force conformance to the ACPI specification.
4158 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4162 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4163 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4164 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4166 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4168 Intel and other vendors. (for Intel: ICH4-M and earlier)
4170 This change removes the code to disable/enable bus master arbitration
4172 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4174 resume problems on some machines. The change has been in use for over
4178 Implemented two new external interfaces to support host-directed dynamic
4180 table load and unload. They are intended to simplify the host
4182 of hot-plug support:
4183 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4184 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4186 See the ACPICA reference for additional details. Adds one new file,
4187 components/tables/tbxfload.c
4189 Implemented and deployed two new interfaces for errors and warnings that
4191 known to be caused by BIOS/firmware issues:
4192 AcpiBiosError: Prints "ACPI Firmware Error" message.
4193 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4194 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4196 and FADT errors. Additional deployment to be completed as appropriate in
4198 future. The associated conditional macros are ACPI_BIOS_ERROR and
4199 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4204 Implicit notify support: ensure that no memory allocation occurs within a
4205 critical region. This fix moves a memory allocation outside of the time
4207 spinlock is held. Fixes issues on systems that do not allow this
4211 Split exception code utilities and tables into a new file,
4214 Example Code and Data Size: These are the sizes for the OS-independent
4215 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4217 version of the code includes the debug output trace mechanism and has a
4219 larger code and data size.
4222 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4223 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4225 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4226 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4229 2) iASL Compiler/Disassembler and Tools:
4231 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4235 Debugger: Enhanced the "tables" command to emit additional information
4237 the current set of ACPI tables, including the owner ID and flags decode.
4239 Debugger: Reimplemented the "unload" command to use the new
4240 AcpiUnloadParentTable external interface. This command was disable
4242 due to need for an unload interface.
4244 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4246 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4248 ----------------------------------------
4249 20 June 2012. Summary of changes for version 20120620:
4252 1) ACPICA Kernel-resident Subsystem:
4254 Implemented support to expand the "implicit notify" feature to allow
4256 devices to be notified by a single GPE. This feature automatically
4258 runtime device notification in the absence of a BIOS-provided GPE control
4259 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4261 provided by ACPICA for Windows compatibility, and is a workaround for
4264 code errors. See the description of the AcpiSetupGpeForWake interface in
4266 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4268 Changed some comments and internal function names to simplify and ensure
4269 correctness of the Linux code translation. No functional changes.
4271 Example Code and Data Size: These are the sizes for the OS-independent
4272 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4274 version of the code includes the debug output trace mechanism and has a
4276 larger code and data size.
4279 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4280 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4282 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4283 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4286 2) iASL Compiler/Disassembler and Tools:
4288 Disassembler: Added support to emit short, commented descriptions for the
4290 predefined names in order to improve the readability of the disassembled
4291 output. ACPICA BZ 959. Changes include:
4292 1) Emit descriptions for all standard predefined names (_INI, _STA,
4295 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4296 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4299 AcpiSrc: Fixed several long-standing Linux code translation issues.
4301 descriptions in function headers are now translated properly to lower
4304 underscores. ACPICA BZ 961. Also fixes translation problems such as
4310 local_fADT -> local_FADT
4311 execute_oSI -> execute_OSI
4313 iASL: Fixed a problem where null bytes were inadvertently emitted into
4317 iASL: Added the existing debug options to the standard help screen. There
4319 no longer two different help screens. ACPICA BZ 957.
4321 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4323 expand some of the descriptions where appropriate.
4325 iASL: Fixed the -ot option (display compile times/statistics). Was not
4327 properly for standard output; only worked for the debug file case.
4329 ----------------------------------------
4330 18 May 2012. Summary of changes for version 20120518:
4333 1) ACPICA Core Subsystem:
4335 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4337 to block until asynchronous events such as notifies and GPEs have
4339 Within ACPICA, it is only called before a notify or GPE handler is
4340 removed/uninstalled. It also may be useful for the host OS within related
4341 drivers such as the Embedded Controller driver. See the ACPICA reference
4343 additional information. ACPICA BZ 868.
4345 ACPI Tables: Added a new error message for a possible overflow failure
4347 the conversion of FADT 32-bit legacy register addresses to internal
4350 bit GAS structure representation. The GAS has a one-byte "bit length"
4352 thus limiting the register length to 255 bits. ACPICA BZ 953.
4354 Example Code and Data Size: These are the sizes for the OS-independent
4355 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4357 version of the code includes the debug output trace mechanism and has a
4359 larger code and data size.
4362 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4363 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4365 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4366 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4369 2) iASL Compiler/Disassembler and Tools:
4371 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4373 This keyword was added late in the ACPI 5.0 release cycle and was not
4374 implemented until now.
4376 Disassembler: Added support for Operation Region externals. Adds missing
4377 support for operation regions that are defined in another table, and
4378 referenced locally via a Field or BankField ASL operator. Now generates
4380 correct External statement.
4382 Disassembler: Several additional fixes for the External() statement
4384 related to some ASL operators. Also, order the External() statements
4385 alphabetically in the disassembler output. Fixes the External()
4388 the Create* field, Alias, and Scope operators:
4389 1) Create* buffer field operators - fix type mismatch warning on
4391 2) Alias - implement missing External support
4392 3) Scope - fix to make sure all necessary externals are emitted.
4394 iASL: Improved pathname support. For include files, merge the prefix
4396 with the file pathname and eliminate unnecessary components. Convert
4397 backslashes in all pathnames to forward slashes, for readability. Include
4399 pathname changes affect both #include and Include() type operators.
4401 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4403 of a valid line by inserting a newline and then returning the EOF during
4405 next call to GetNextLine. Prevents the line from being ignored due to EOF
4408 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4410 and Warning messages are now correctly recognized for both the source
4412 browser and the global error and warning counts.
4414 ----------------------------------------
4415 20 April 2012. Summary of changes for version 20120420:
4418 1) ACPICA Core Subsystem:
4420 Implemented support for multiple notify handlers. This change adds
4423 allow multiple system and device notify handlers on Device, Thermal Zone,
4425 Processor objects. This can simplify the host OS notification
4427 Also re-worked and restructured the entire notify support code to
4429 handler installation, handler removal, notify event queuing, and notify
4430 dispatch to handler(s). Note: there can still only be two global notify
4431 handlers - one for system notifies and one for device notifies. There are
4433 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4434 Moore, Rafael Wysocki.
4436 Fixed a regression in the package repair code where the object reference
4437 count was calculated incorrectly. Regression was introduced in the commit
4438 "Support to add Package wrappers".
4440 Fixed a couple possible memory leaks in the AML parser, in the error
4442 path. Jesper Juhl, Lin Ming.
4444 Example Code and Data Size: These are the sizes for the OS-independent
4445 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4446 debug version of the code includes the debug output trace mechanism and
4448 much larger code and data size.
4451 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4452 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4454 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4455 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4458 2) iASL Compiler/Disassembler and Tools:
4460 iASL: Fixed a problem with the resource descriptor support where the
4462 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4463 included in cumulative descriptor offset, resulting in incorrect values
4465 resource tags within resource descriptors appearing after a
4467 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4469 iASL and Preprocessor: Implemented full support for the #line directive
4471 correctly track original source file line numbers through the .i
4473 output file - for error and warning messages.
4475 iASL: Expand the allowable byte constants for address space IDs.
4477 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4478 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4480 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4482 iASL: Add option to completely disable the preprocessor (-Pn).
4484 iASL: Now emit all error/warning messages to standard error (stderr) by
4485 default (instead of the previous stdout).
4487 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4489 for resource descriptor offset fix above. Update/cleanup error output
4490 routines. Enable and send iASL errors/warnings to an error logfile
4491 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4493 several extraneous "unrecognized operator" messages.
4495 ----------------------------------------
4496 20 March 2012. Summary of changes for version 20120320:
4499 1) ACPICA Core Subsystem:
4501 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4502 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4504 does not execute these methods, and therefore these methods are often
4505 untested. It has been seen on some systems where the execution of these
4506 methods causes errors and also prevents the machine from entering S5. It
4508 therefore suggested that host operating systems do not execute these
4510 by default. In the future, perhaps these methods can be optionally
4512 based on the age of the system and/or what is the newest version of
4514 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4516 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4519 Fixed a problem where the length of the local/common FADT was set too
4521 The local FADT table length cannot be set to the common length until the
4522 original length has been examined. There is code that checks the table
4524 and sets various fields appropriately. This can affect older machines
4526 early FADT versions. For example, this can cause inadvertent writes to
4528 CST_CNT register. Julian Anastasov.
4530 Fixed a mapping issue related to a physical table override. Use the
4532 mapping mechanism for tables loaded via the physical override OSL
4534 This allows for early mapping before the virtual memory manager is
4536 Thomas Renninger, Bob Moore.
4538 Enhanced the automatic return-object repair code: Repair a common problem
4540 predefined methods that are defined to return a variable-length Package
4542 sub-objects. If there is only one sub-object, some BIOS ASL code
4544 simply returns the single object instead of a Package with one sub-
4546 This new support will repair this error by wrapping a Package object
4548 the original object, creating the correct and expected Package with one
4550 object. Names that can be repaired in this manner include: _ALR, _CSD,
4552 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4555 Changed the exception code returned for invalid ACPI paths passed as
4556 parameters to external interfaces such as AcpiEvaluateObject. Was
4557 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4559 Example Code and Data Size: These are the sizes for the OS-independent
4560 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4562 version of the code includes the debug output trace mechanism and has a
4564 larger code and data size.
4567 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4568 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4570 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4571 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4574 2) iASL Compiler/Disassembler and Tools:
4576 iASL: Added the infrastructure and initial implementation of a integrated
4578 like preprocessor. This will simplify BIOS development process by
4580 the need for a separate preprocessing step during builds. On Windows, it
4582 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4583 features including full #define() macro support are still under
4585 These preprocessor directives are supported:
4598 In addition, these new command line options are supported:
4599 -D <symbol> Define symbol for preprocessor use
4600 -li Create preprocessed output file (*.i)
4601 -P Preprocess only and create preprocessor output file (*.i)
4603 Table Compiler: Fixed a problem where the equals operator within an
4605 did not work properly.
4607 Updated iASL to use the current versions of Bison/Flex. Updated the
4609 project file to invoke these tools from the standard location. ACPICA BZ
4612 Flex for Windows: V2.5.4
4613 Bison for Windows: V2.4.1
4615 ----------------------------------------
4616 15 February 2012. Summary of changes for version 20120215:
4619 1) ACPICA Core Subsystem:
4621 There have been some major changes to the sleep/wake support code, as
4622 described below (a - e).
4624 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4625 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4626 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4628 time the _BFS method is called and the _WAK method is called. NOTE: all
4630 must update their wake/resume code or else sleep/wake will not work
4634 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4636 method. Some machines require that the GPEs are enabled before the _WAK
4638 is executed. Thomas Renninger.
4640 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4642 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4644 determine whether the system is rebooting or resuming. Matthew Garrett.
4646 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4648 match the ACPI specification requirement. Rafael Wysocki.
4650 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4651 registers within the V5 FADT. This support adds two new files:
4652 hardware/hwesleep.c implements the support for the new registers. Moved
4654 sleep/wake external interfaces to hardware/hwxfsleep.c.
4657 Added a new OSL interface for ACPI table overrides,
4658 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4659 table via a physical address, instead of the logical address required by
4660 AcpiOsTableOverride. This simplifies the host implementation. Initial
4661 implementation by Thomas Renninger. The ACPICA implementation creates a
4663 shared function for table overrides that attempts both a logical and a
4666 Expanded the OSL memory read/write interfaces to 64-bit data
4667 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4668 transfer support for GAS register structures passed to AcpiRead and
4671 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4673 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4675 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4677 10% of the code and 5% of the static data, and the following hardware
4679 features become unavailable:
4680 PM Event and Control registers
4681 SCI interrupt (and handler)
4683 General Purpose Events (GPEs)
4686 FACS table (Waking vectors and Global Lock)
4688 Updated the unix tarball directory structure to match the ACPICA git
4690 tree. This ensures that the generic unix makefiles work properly (in
4691 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4694 Updated the return value of the _REV predefined method to integer value 5
4696 reflect ACPI 5.0 support.
4698 Moved the external ACPI PM timer interface prototypes to the public
4700 file where they belong.
4702 Example Code and Data Size: These are the sizes for the OS-independent
4703 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4705 version of the code includes the debug output trace mechanism and has a
4707 larger code and data size.
4710 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4711 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4713 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4714 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4717 2) iASL Compiler/Disassembler and Tools:
4719 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4720 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4721 incorrectly displayed.
4723 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4726 ----------------------------------------
4727 11 January 2012. Summary of changes for version 20120111:
4730 1) ACPICA Core Subsystem:
4732 Implemented a new mechanism to allow host device drivers to check for
4734 range conflicts with ACPI Operation Regions. Both SystemMemory and
4736 address spaces are supported. A new external interface,
4737 AcpiCheckAddressRange,
4738 allows drivers to check an address range against the ACPI namespace. See
4740 ACPICA reference for additional details. Adds one new file,
4741 utilities/utaddress.c. Lin Ming, Bob Moore.
4743 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4746 Status registers, update the ACPI 5.0 flags, and update internal data
4747 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4751 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4753 all module headers and signons, including the standard Linux header. This
4754 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4756 all ACPICA utilities.
4758 Example Code and Data Size: These are the sizes for the OS-independent
4759 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4761 version of the code includes the debug output trace mechanism and has a
4763 larger code and data size.
4766 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4767 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4769 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4770 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4773 2) iASL Compiler/Disassembler and Tools:
4775 Disassembler: fixed a problem with the automatic resource tag generation
4776 support. Fixes a problem where the resource tags are inadvertently not
4777 constructed if the table being disassembled contains external references
4779 control methods. Moved the actual construction of the tags to after the
4781 namespace is constructed (after 2nd parse is invoked due to external
4783 method references.) ACPICA BZ 941.
4785 Table Compiler: Make all "generic" operators caseless. These are the
4787 like UINT8, String, etc. Making these caseless improves ease-of-use.
4791 ----------------------------------------
4792 23 November 2011. Summary of changes for version 20111123:
4794 0) ACPI 5.0 Support:
4796 This release contains full support for the ACPI 5.0 specification, as
4799 Reduced Hardware Support:
4800 -------------------------
4802 This support allows for ACPI systems without the usual ACPI hardware.
4804 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
4806 not attempt to initialize or use any of the usual ACPI hardware. Note,
4808 this flag is set, all of the following ACPI hardware is assumed to be not
4809 present and is not initialized or accessed:
4811 General Purpose Events (GPEs)
4812 Fixed Events (PM1a/PM1b and PM Control)
4813 Power Management Timer and Console Buttons (power/sleep)
4814 Real-time Clock Alarm
4816 System Control Interrupt (SCI)
4817 The FACS is assumed to be non-existent
4822 All new tables and updates to existing tables are fully supported in the
4823 ACPICA headers (for use by device drivers), the disassembler, and the
4825 Data Table Compiler. ACPI 5.0 defines these new tables:
4827 BGRT /* Boot Graphics Resource Table */
4828 DRTM /* Dynamic Root of Trust for Measurement table */
4829 FPDT /* Firmware Performance Data Table */
4830 GTDT /* Generic Timer Description Table */
4831 MPST /* Memory Power State Table */
4832 PCCT /* Platform Communications Channel Table */
4833 PMTT /* Platform Memory Topology Table */
4834 RASF /* RAS Feature table */
4836 Operation Regions/SpaceIDs:
4837 ---------------------------
4839 All new operation regions are fully supported by the iASL compiler, the
4840 disassembler, and the ACPICA runtime code (for dispatch to region
4842 The new operation region Space IDs are:
4847 Resource Descriptors:
4848 ---------------------
4850 All new ASL resource descriptors are fully supported by the iASL
4853 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
4855 all new predefined resource tags). New descriptors are:
4864 ASL/AML Operators, New and Modified:
4865 ------------------------------------
4867 One new operator is added, the Connection operator, which is used to
4869 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4871 field objects within an operation region. Several new protocols are
4873 with the AccessAs operator. All are fully supported by the iASL compiler,
4874 disassembler, and runtime ACPICA AML interpreter:
4876 Connection // Declare Field Connection
4878 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4879 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4881 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4882 RawDataBuffer // Data type for Vendor Data
4885 Predefined ASL/AML Objects:
4886 ---------------------------
4888 All new predefined objects/control-methods are supported by the iASL
4890 and the ACPICA runtime validation/repair (arguments and return values.)
4892 predefined names include the following:
4894 Standard Predefined Names (Objects or Control Methods):
4895 _AEI, _CLS, _CPC, _CWS, _DEP,
4896 _DLM, _EVT, _GCP, _CRT, _GWS,
4897 _HRV, _PRE, _PSE, _SRT, _SUB.
4899 Resource Tags (Names used to access individual fields within resource
4901 _DBT, _DPL, _DRS, _END, _FLC,
4902 _IOR, _LIN, _MOD, _PAR, _PHA,
4903 _PIN, _PPI, _POL, _RXL, _SLV,
4904 _SPE, _STB, _TXL, _VEN.
4906 ACPICA External Interfaces:
4907 ---------------------------
4909 Several new interfaces have been defined for use by ACPI-related device
4910 drivers and other host OS services:
4912 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4914 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4915 provided by the BIOS. They are intended to be used in conjunction with
4917 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4918 mutual exclusion with the AML code/interpreter.
4920 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4922 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4924 resource descriptors associated with hardware-reduced platform events,
4926 to the AcpiGetCurrentResources interface.
4928 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4929 operation regions, information about the Connection() object and any
4931 length information is passed to the region handler within the Context
4934 AcpiBufferToResource: This interface converts a raw AML buffer containing
4936 resource template or resource descriptor to the ACPI_RESOURCE internal
4938 suitable for use by device drivers. Can be used by an operation region
4940 to convert the Connection() buffer object into a ACPI_RESOURCE.
4942 Miscellaneous/Tools/TestSuites:
4943 -------------------------------
4945 Support for extended _HID names (Four alpha characters instead of three).
4946 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4947 Support for ACPI 5.0 features in the ASLTS test suite.
4948 Fully updated documentation (ACPICA and iASL reference documents.)
4950 ACPI Table Definition Language:
4951 -------------------------------
4953 Support for this language was implemented and released as a subsystem of
4955 iASL compiler in 2010. (See the iASL compiler User Guide.)
4958 Non-ACPI 5.0 changes for this release:
4959 --------------------------------------
4961 1) ACPICA Core Subsystem:
4963 Fix a problem with operation region declarations where a failure can
4966 the region name and an argument that evaluates to an object (such as the
4967 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4970 Do not abort an ACPI table load if an invalid space ID is found within.
4972 will be caught later if the offending method is executed. ACPICA BZ 925.
4974 Fixed an issue with the FFixedHW space ID where the ID was not always
4975 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4977 Fixed a problem with the 32-bit generation of the unix-specific OSL
4978 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4980 Several changes made to enable generation with the GCC 4.6 compiler.
4984 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4986 field registers out-of-range.
4988 2) iASL Compiler/Disassembler and Tools:
4990 iASL: Implemented the __PATH__ operator, which returns the full pathname
4992 the current source file.
4994 AcpiHelp: Automatically display expanded keyword information for all ASL
4997 Debugger: Add "Template" command to disassemble/dump resource template
5000 Added a new master script to generate and execute the ASLTS test suite.
5001 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5003 iASL: Fix problem with listing generation during processing of the
5005 operator where AML listing was disabled until the entire Switch block was
5008 iASL: Improve support for semicolon statement terminators. Fix "invalid
5009 character" message for some cases when the semicolon is used. Semicolons
5011 now allowed after every <Term> grammar element. ACPICA BZ 927.
5013 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5016 Disassembler: Fix problem with disassembly of the DataTableRegion
5018 where an inadvertent "Unhandled deferred opcode" message could be
5021 3) Example Code and Data Size
5023 These are the sizes for the OS-independent acpica.lib produced by the
5024 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5025 includes the debug output trace mechanism and has a much larger code and
5030 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5031 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5033 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5034 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5036 ----------------------------------------
5037 22 September 2011. Summary of changes for version 20110922:
5041 Support for ACPI 5.0 in ACPICA has been underway for several months and
5043 be released at the same time that ACPI 5.0 is officially released.
5045 The ACPI 5.0 specification is on track for release in the next few
5048 1) ACPICA Core Subsystem:
5050 Fixed a problem where the maximum sleep time for the Sleep() operator was
5051 intended to be limited to two seconds, but was inadvertently limited to
5055 Linux and Unix makefiles: Added header file dependencies to ensure
5057 generation of ACPICA core code and utilities. Also simplified the
5059 considerably through the use of the vpath variable to specify search
5063 2) iASL Compiler/Disassembler and Tools:
5065 iASL: Implemented support to check the access length for all fields
5067 access named Resource Descriptor fields. For example, if a resource field
5069 defined to be two bits, a warning is issued if a CreateXxxxField() is
5071 with an incorrect bit length. This is implemented for all current
5073 descriptor names. ACPICA BZ 930.
5075 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5079 iASL: Fixed a couple of issues associated with variable-length package
5080 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5082 VAR_PACKAGE when these are used as a package length. 2) Allow the
5084 opcode (in addition to PACKAGE) when validating object types for
5088 iASL: Emit statistics for all output files (instead of just the ASL input
5090 AML output). Includes listings, hex files, etc.
5092 iASL: Added -G option to the table compiler to allow the compilation of
5094 ACPI tables. The only part of a table that is required is the standard
5099 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5101 which also adds correct 64-bit support. Also, now all output filenames
5103 completely lower case.
5105 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5106 loading table files. A warning is issued for any such tables. The only
5107 exception is an FADT. This also fixes a possible fault when attempting to
5109 non-AML tables. ACPICA BZ 932.
5111 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5113 missing table terminator could cause a fault when using the -p option.
5115 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5118 3) Example Code and Data Size
5120 These are the sizes for the OS-independent acpica.lib produced by the
5121 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5122 includes the debug output trace mechanism and has a much larger code and
5126 Previous Release (VC 9.0):
5127 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5128 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5129 Current Release (VC 9.0):
5130 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5131 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5134 ----------------------------------------
5135 23 June 2011. Summary of changes for version 20110623:
5137 1) ACPI CA Core Subsystem:
5139 Updated the predefined name repair mechanism to not attempt repair of a
5141 return object if a _PSS object is present. We can only sort the _TSS
5143 package if there is no _PSS within the same scope. This is because if
5146 present, the ACPI specification dictates that the _TSS Power Dissipation
5148 is to be ignored, and therefore some BIOSs leave garbage values in the
5150 Power field(s). In this case, it is best to just return the _TSS package
5152 is. Reported by, and fixed with assistance from Fenghua Yu.
5154 Added an option to globally disable the control method return value
5156 and repair. This runtime option can be used to disable return value
5159 this is causing a problem on a particular machine. Also added an option
5161 AcpiExec (-dr) to set this disable flag.
5163 All makefiles and project files: Major changes to improve generation of
5165 tools. ACPICA BZ 912:
5166 Reduce default optimization levels to improve compatibility
5167 For Linux, add strict-aliasing=0 for gcc 4
5168 Cleanup and simplify use of command line defines
5169 Cleanup multithread library support
5170 Improve usage messages
5172 Linux-specific header: update handling of THREAD_ID and pthread. For the
5174 bit case, improve casting to eliminate possible warnings, especially with
5178 Example Code and Data Size: These are the sizes for the OS-independent
5179 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5181 version of the code includes the debug output trace mechanism and has a
5183 larger code and data size.
5185 Previous Release (VC 9.0):
5186 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5187 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5188 Current Release (VC 9.0):
5189 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5190 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5192 2) iASL Compiler/Disassembler and Tools:
5194 With this release, a new utility named "acpihelp" has been added to the
5196 package. This utility summarizes the ACPI specification chapters for the
5198 and AML languages. It generates under Linux/Unix as well as Windows, and
5199 provides the following functionality:
5200 Find/display ASL operator(s) -- with description and syntax.
5201 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5202 Find/display ACPI predefined name(s) -- with description, number
5203 of arguments, and the return value data type.
5204 Find/display AML opcode name(s) -- with opcode, arguments, and
5206 Decode/display AML opcode -- with opcode name, arguments, and
5209 Service Layers: Make multi-thread support configurable. Conditionally
5211 the multi-thread support so that threading libraries will not be linked
5214 necessary. The only tool that requires multi-thread support is AcpiExec.
5216 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5218 Bison appear to want the interface to yyerror to be a const char * (or at
5219 least this is a problem when generating iASL on some systems.) ACPICA BZ
5223 Tools: Fix for systems where O_BINARY is not defined. Only used for
5225 versions of the tools.
5227 ----------------------------------------
5228 27 May 2011. Summary of changes for version 20110527:
5230 1) ACPI CA Core Subsystem:
5232 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5234 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5235 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5236 (PSDT is now obsolete.)
5237 2) We added support for OEMx tables, signature "OEM" plus a fourth
5238 "don't care" character.
5239 3) Valid tables were encountered with a null signature, so we just
5240 gave up on validating the signature, (05/2008).
5241 4) We encountered non-AML tables such as the MADT, which caused
5242 interpreter errors and kernel faults. So now, we once again allow
5243 only SSDT, OEMx, and now, also a null signature. (05/2011).
5245 Added the missing _TDL predefined name to the global name list in order
5247 enable validation. Affects both the core ACPICA code and the iASL
5250 Example Code and Data Size: These are the sizes for the OS-independent
5251 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5253 version of the code includes the debug output trace mechanism and has a
5255 larger code and data size.
5257 Previous Release (VC 9.0):
5258 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5259 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5260 Current Release (VC 9.0):
5261 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5262 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5264 2) iASL Compiler/Disassembler and Tools:
5266 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5268 debugger command line. This adds support beyond simple integers --
5270 Strings, Buffers, and Packages. Includes support for nested packages.
5271 Increased the default command line buffer size to accommodate these
5273 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5275 Debugger/AcpiExec: Implemented support for "default" method arguments for
5277 Execute/Debug command. Now, the debugger will always invoke a control
5279 with the required number of arguments -- even if the command line
5281 none or insufficient arguments. It uses default integer values for any
5283 arguments. Also fixes a bug where only six method arguments maximum were
5284 supported instead of the required seven.
5286 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5288 also return status in order to prevent buffer overruns. See the ACPICA
5289 reference for details and syntax. ACPICA BZ 921
5291 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5292 makefiles to simplify support for the two different but similar parser
5293 generators, bison and yacc.
5295 Updated the generic unix makefile for gcc 4. The default gcc version is
5297 expected to be 4 or greater, since options specific to gcc 4 are used.
5299 ----------------------------------------
5300 13 April 2011. Summary of changes for version 20110413:
5302 1) ACPI CA Core Subsystem:
5304 Implemented support to execute a so-called "orphan" _REG method under the
5306 device. This change will force the execution of a _REG method underneath
5309 device even if there is no corresponding operation region of type
5310 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5311 compatible with Windows behavior. ACPICA BZ 875.
5313 Added more predefined methods that are eligible for automatic NULL
5315 element removal. This change adds another group of predefined names to
5318 of names that can be repaired by having NULL package elements dynamically
5319 removed. This group are those methods that return a single variable-
5321 package containing simple data types such as integers, buffers, strings.
5323 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5326 and _TZD. ACPICA BZ 914.
5328 Split and segregated all internal global lock functions to a new file,
5331 Updated internal address SpaceID for DataTable regions. Moved this
5334 id in preparation for ACPI 5.0 changes that will include some new space
5337 change should not affect user/host code.
5339 Example Code and Data Size: These are the sizes for the OS-independent
5341 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5343 the code includes the debug output trace mechanism and has a much larger
5348 Previous Release (VC 9.0):
5349 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5350 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5351 Current Release (VC 9.0):
5352 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5353 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5355 2) iASL Compiler/Disassembler and Tools:
5357 iASL/DTC: Major update for new grammar features. Allow generic data types
5359 custom ACPI tables. Field names are now optional. Any line can be split
5361 multiple lines using the continuation char (\). Large buffers now use
5363 continuation character(s) and no colon on the continuation lines. See the
5365 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5368 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5370 Since the parser stuffs a "zero" as the return value for these statements
5373 the underlying AML grammar), they were seen as "return with value" by the
5375 semantic checking. They are now seen correctly as "null" return
5378 iASL: Check if a_REG declaration has a corresponding Operation Region.
5380 check for each _REG to ensure that there is in fact a corresponding
5382 region declaration in the same scope. If not, the _REG method is not very
5384 since it probably won't be executed. ACPICA BZ 915.
5386 iASL/DTC: Finish support for expression evaluation. Added a new
5389 that implements c-style operator precedence and parenthesization. ACPICA
5393 Disassembler/DTC: Remove support for () and <> style comments in data
5396 that DTC has full expression support, we don't want to have comment
5399 start with a parentheses or a less-than symbol. Now, only the standard /*
5402 comments are supported, as well as the bracket [] comments.
5404 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5406 headers in the acpidump file. Update the header validation to support
5408 tables. Problem introduced in previous AcpiXtract version in the change
5410 support "wrong checksum" error messages emitted by acpidump utility.
5412 iASL: Add a * option to generate all template files (as a synonym for
5416 "iasl -T *" or "iasl -T ALL".
5418 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5420 abort the compiler on "fatal" errors, simply should abort the current
5422 This allows multiple compiles with a single (possibly wildcard) compiler
5425 ----------------------------------------
5426 16 March 2011. Summary of changes for version 20110316:
5428 1) ACPI CA Core Subsystem:
5430 Fixed a problem caused by a _PRW method appearing at the namespace root
5432 during the setup of wake GPEs. A fault could occur if a _PRW directly
5435 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5437 Implemented support for "spurious" Global Lock interrupts. On some
5439 global lock interrupt can occur without the pending flag being set. Upon
5442 interrupt, we now ensure that a thread is actually waiting for the lock
5444 signaling GL availability. Rafael Wysocki, Bob Moore.
5446 Example Code and Data Size: These are the sizes for the OS-independent
5448 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5450 the code includes the debug output trace mechanism and has a much larger
5455 Previous Release (VC 9.0):
5456 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5457 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5458 Current Release (VC 9.0):
5459 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5460 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5462 2) iASL Compiler/Disassembler and Tools:
5464 Implemented full support for the "SLIC" ACPI table. Includes support in
5466 header files, disassembler, table compiler, and template generator. Bob
5470 AcpiXtract: Correctly handle embedded comments and messages from
5472 Apparently some or all versions of acpidump will occasionally emit a
5475 "Wrong checksum", etc., into the dump file. This was causing problems for
5476 AcpiXtract. ACPICA BZ 905.
5478 iASL: Fix the Linux makefile by removing an inadvertent double file
5482 AcpiExec: Update installation of operation region handlers. Install one
5484 for a user-defined address space. This is used by the ASL test suite
5487 ----------------------------------------
5488 11 February 2011. Summary of changes for version 20110211:
5490 1) ACPI CA Core Subsystem:
5492 Added a mechanism to defer _REG methods for some early-installed
5494 Most user handlers should be installed before call to
5495 AcpiEnableSubsystem.
5496 However, Event handlers and region handlers should be installed after
5497 AcpiInitializeObjects. Override handlers for the "default" regions should
5499 installed early, however. This change executes all _REG methods for the
5500 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5501 chicken/egg issues between them. ACPICA BZ 848.
5503 Implemented an optimization for GPE detection. This optimization will
5505 ignore GPE registers that contain no enabled GPEs -- there is no need to
5506 read the register since this information is available internally. This
5507 becomes more important on machines with a large GPE space. ACPICA
5509 884. Lin Ming. Suggestion from Joe Liu.
5511 Removed all use of the highly unreliable FADT revision field. The
5513 number in the FADT has been found to be completely unreliable and cannot
5515 trusted. Only the actual table length can be used to infer the version.
5517 change updates the ACPICA core and the disassembler so that both no
5519 even look at the FADT version and instead depend solely upon the FADT
5522 Fix an unresolved name issue for the no-debug and no-error-message source
5523 generation cases. The _AcpiModuleName was left undefined in these cases,
5525 it is actually needed as a parameter to some interfaces. Define
5526 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5528 Split several large files (makefiles and project files updated)
5529 utglobal.c -> utdecode.c
5530 dbcomds.c -> dbmethod.c dbnames.c
5531 dsopcode.c -> dsargs.c dscontrol.c
5532 dsload.c -> dsload2.c
5533 aslanalyze.c -> aslbtypes.c aslwalks.c
5535 Example Code and Data Size: These are the sizes for the OS-independent
5536 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5537 debug version of the code includes the debug output trace mechanism and
5539 a much larger code and data size.
5541 Previous Release (VC 9.0):
5542 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5543 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5544 Current Release (VC 9.0):
5545 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5546 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5548 2) iASL Compiler/Disassembler and Tools:
5550 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5551 These are useful C-style macros with the standard definitions. ACPICA
5554 iASL/DTC: Added support for integer expressions and labels. Support for
5556 expressions for all integer fields in all ACPI tables. Support for labels
5558 "generic" portions of tables such as UEFI. See the iASL reference manual.
5560 Debugger: Added a command to display the status of global handlers. The
5561 "handlers" command will display op region, fixed event, and miscellaneous
5562 global handlers. installation status -- and for op regions, whether
5564 or user-installed handler will be used.
5566 iASL: Warn if reserved method incorrectly returns a value. Many
5568 names are defined such that they do not return a value. If implemented as
5570 method, issue a warning if such a name explicitly returns a value. ACPICA
5573 iASL: Added detection of GPE method name conflicts. Detects a conflict
5575 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5577 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5579 iASL/DTC: Fixed a couple input scanner issues with comments and line
5580 numbers. Comment remover could get confused and miss a comment ending.
5582 a problem with line counter maintenance.
5584 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5586 no need to abort on simple errors within a field definition.
5588 Debugger: Simplified the output of the help command. All help output now
5590 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5592 ----------------------------------------
5593 12 January 2011. Summary of changes for version 20110112:
5595 1) ACPI CA Core Subsystem:
5597 Fixed a race condition between method execution and namespace walks that
5599 possibly cause a fault. The problem was apparently introduced in version
5600 20100528 as a result of a performance optimization that reduces the
5603 namespace walks upon method exit by using the delete_namespace_subtree
5604 function instead of the delete_namespace_by_owner function used
5606 Bug is a missing namespace lock in the delete_namespace_subtree function.
5607 dana.myers@oracle.com
5609 Fixed several issues and a possible fault with the automatic "serialized"
5610 method support. History: This support changes a method to "serialized" on
5612 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5613 possibility that it cannot handle reentrancy. This fix repairs a couple
5615 issues seen in the field, especially on machines with many cores:
5617 1) Delete method children only upon the exit of the last thread,
5618 so as to not delete objects out from under other running threads
5619 (and possibly causing a fault.)
5620 2) Set the "serialized" bit for the method only upon the exit of the
5621 Last thread, so as to not cause deadlock when running threads
5623 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5624 so that there is no longer any confusion between the two.
5626 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5628 Debugger: Now lock the namespace for duration of a namespace dump.
5630 issues if the namespace is changing dynamically underneath the debugger.
5631 Especially affects temporary namespace nodes, since the debugger displays
5634 Updated the ordering of include files. The ACPICA headers should appear
5635 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5637 any necessary compiler-specific defines, etc. Affects the ACPI-related
5641 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5643 to all module headers and signons, including the Linux header. This
5645 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5648 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5649 project files for VC++ 6.0 are now obsolete. New project files can be
5651 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5654 Example Code and Data Size: These are the sizes for the OS-independent
5655 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5656 debug version of the code includes the debug output trace mechanism and
5658 much larger code and data size.
5660 Previous Release (VC 6.0):
5661 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5662 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5663 Current Release (VC 9.0):
5664 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5665 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5667 2) iASL Compiler/Disassembler and Tools:
5669 iASL: Added generic data types to the Data Table compiler. Add "generic"
5671 types such as UINT32, String, Unicode, etc., to simplify the generation
5673 platform-defined tables such as UEFI. Lin Ming.
5675 iASL: Added listing support for the Data Table Compiler. Adds listing
5677 (-l) to display actual binary output for each line of input code.
5679 ----------------------------------------
5680 09 December 2010. Summary of changes for version 20101209:
5682 1) ACPI CA Core Subsystem:
5684 Completed the major overhaul of the GPE support code that was begun in
5686 2010. Major features include: removal of _PRW execution in ACPICA (host
5687 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5688 changes to existing interfaces, simplification of GPE handler operation,
5690 a handful of new interfaces:
5696 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5698 See the ACPICA Programmer Reference for full details and programming
5699 information. See the new section 4.4 "General Purpose Event (GPE)
5701 for a full overview, and section 8.7 "ACPI General Purpose Event
5703 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5705 Bob Moore, Rafael Wysocki.
5707 Implemented a new GPE feature for Windows compatibility, the "Implicit
5709 GPE Notify". This feature will automatically issue a Notify(2) on a
5711 when a Wake GPE is received if there is no corresponding GPE method or
5712 handler. ACPICA BZ 870.
5714 Fixed a problem with the Scope() operator during table parse and load
5716 During load phase (table load or method execution), the scope operator
5718 not enter the target into the namespace. Instead, it should open a new
5720 at the target location. Linux BZ 19462, ACPICA BZ 882.
5722 Example Code and Data Size: These are the sizes for the OS-independent
5723 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5724 debug version of the code includes the debug output trace mechanism and
5726 much larger code and data size.
5729 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5730 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5732 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5733 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5735 2) iASL Compiler/Disassembler and Tools:
5737 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5739 "bus-specific" per the ACPI specification, and therefore any characters
5741 acceptable. The only checks that can be performed are for a null string
5743 perhaps for a leading asterisk. ACPICA BZ 886.
5745 iASL: Fixed a problem where a syntax error that caused a premature EOF
5746 condition on the source file emitted a very confusing error message. The
5747 premature EOF is now detected correctly. ACPICA BZ 891.
5749 Disassembler: Decode the AccessSize within a Generic Address Structure
5751 access, word access, etc.) Note, this field does not allow arbitrary bit
5752 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5754 New: AcpiNames utility - Example namespace dump utility. Shows an example
5756 ACPICA configuration for a minimal namespace dump utility. Uses table and
5757 namespace managers, but no AML interpreter. Does not add any
5759 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
5760 partition and configure ACPICA. ACPICA BZ 883.
5762 AML Debugger: Increased the debugger buffer size for method return
5764 Was 4K, increased to 16K. Also enhanced error messages for debugger
5766 execution, including the buffer overflow case.
5768 ----------------------------------------
5769 13 October 2010. Summary of changes for version 20101013:
5771 1) ACPI CA Core Subsystem:
5773 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
5775 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
5776 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
5778 Changed the type of the predefined namespace object _TZ from ThermalZone
5780 Device. This was found to be confusing to the host software that
5782 the various thermal zones, since _TZ is not really a ThermalZone.
5785 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
5788 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
5789 string is "Windows 2006 SP2".
5791 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
5793 code automatically repairs _HID-related strings, this type of code is no
5794 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
5797 Example Code and Data Size: These are the sizes for the OS-independent
5798 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5799 debug version of the code includes the debug output trace mechanism and
5801 much larger code and data size.
5804 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5805 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5807 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5808 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5810 2) iASL Compiler/Disassembler and Tools:
5812 iASL: Implemented additional compile-time validation for _HID strings.
5814 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
5817 the string must be exactly seven or eight characters. For both _HID and
5819 strings, all characters must be alphanumeric. ACPICA BZ 874.
5821 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
5822 descriptors that are mostly or all zeros, with the expectation that they
5824 be filled in at runtime. iASL now allows this as long as there is a
5826 tag" (name) associated with the descriptor, which gives the ASL a handle
5827 needed to modify the descriptor. ACPICA BZ 873.
5829 Added single-thread support to the generic Unix application OSL.
5831 for iASL support, this change removes the use of semaphores in the
5833 threaded ACPICA tools/applications - increasing performance. The
5834 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
5835 option. ACPICA BZ 879.
5837 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
5839 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
5841 iASL: Moved all compiler messages to a new file, aslmessages.h.
5843 ----------------------------------------
5844 15 September 2010. Summary of changes for version 20100915:
5846 1) ACPI CA Core Subsystem:
5848 Removed the AcpiOsDerivePciId OSL interface. The various host
5850 of this function were not OS-dependent and are now obsolete and can be
5851 removed from all host OSLs. This function has been replaced by
5852 AcpiHwDerivePciId, which is now part of the ACPICA core code.
5853 AcpiHwDerivePciId has been implemented without recursion. Adds one new
5854 module, hwpci.c. ACPICA BZ 857.
5856 Implemented a dynamic repair for _HID and _CID strings. The following
5857 problems are now repaired at runtime: 1) Remove a leading asterisk in the
5858 string, and 2) the entire string is uppercased. Both repairs are in
5859 accordance with the ACPI specification and will simplify host driver
5863 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5864 always UINT64. This simplifies the ACPICA code, especially any printf
5866 UINT64 is the only common data type for all thread_id types across all
5867 operating systems. It is now up to the host OSL to cast the native
5869 type to UINT64 before returning the value to ACPICA (via
5871 Lin Ming, Bob Moore.
5873 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5875 keyword is not standard across compilers, and this type allows inline to
5877 configured on a per-compiler basis. Lin Ming.
5879 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5881 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5883 during suspend/restore operations. ACPICA BZ 869.
5885 All code that implements error/warning messages with the "ACPI:" prefix
5887 been moved to a new module, utxferror.c.
5889 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5891 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5893 Example Code and Data Size: These are the sizes for the OS-independent
5894 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5895 debug version of the code includes the debug output trace mechanism and
5897 much larger code and data size.
5900 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5901 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5903 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5904 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5906 2) iASL Compiler/Disassembler and Tools:
5908 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5910 This keeps the output files free of random error messages that may
5912 from within the namespace/interpreter code. Used this opportunity to
5914 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5915 866. Lin Ming, Bob Moore.
5917 Tools: update some printfs for ansi warnings on size_t. Handle width
5919 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5921 ----------------------------------------
5922 06 August 2010. Summary of changes for version 20100806:
5924 1) ACPI CA Core Subsystem:
5926 Designed and implemented a new host interface to the _OSI support code.
5928 will allow the host to dynamically add or remove multiple _OSI strings,
5930 well as install an optional handler that is called for each _OSI
5932 Also added a new AML debugger command, 'osi' to display and modify the
5934 _OSI string table, and test support in the AcpiExec utility. See the
5936 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5938 AcpiInstallInterface - Add an _OSI string.
5939 AcpiRemoveInterface - Delete an _OSI string.
5940 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5942 AcpiOsValidateInterface - no longer used.
5944 source/components/utilities/utosi.c
5946 Re-introduced the support to enable multi-byte transfers for Embedded
5947 Controller (EC) operation regions. A reported problem was found to be a
5949 in the host OS, not in the multi-byte support. Previously, the maximum
5951 size passed to the EC operation region handler was a single byte. There
5953 often EC Fields larger than one byte that need to be transferred, and it
5955 useful for the EC driver to lock these as a single transaction. This
5957 enables single transfers larger than 8 bits. This effectively changes the
5958 access to the EC space from ByteAcc to AnyAcc, and will probably require
5959 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5961 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5963 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5964 prototype in acpiosxf.h had the output value pointer as a (void *).
5965 It should be a (UINT64 *). This may affect some host OSL code.
5967 Fixed a couple problems with the recently modified Linux makefiles for
5969 and AcpiExec. These new makefiles place the generated object files in the
5970 local directory so that there can be no collisions between the files that
5972 shared between them that are compiled with different options.
5974 Example Code and Data Size: These are the sizes for the OS-independent
5975 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5976 debug version of the code includes the debug output trace mechanism and
5978 much larger code and data size.
5981 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5982 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5984 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5985 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5987 2) iASL Compiler/Disassembler and Tools:
5989 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5991 namespace from and disassemble an entire group of AML files. Useful for
5992 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5994 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5996 iASL: Allow multiple invocations of -e option. This change allows
5998 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6002 ----------------------------------------
6003 02 July 2010. Summary of changes for version 20100702:
6005 1) ACPI CA Core Subsystem:
6007 Implemented several updates to the recently added GPE reference count
6008 support. The model for "wake" GPEs is changing to give the host OS
6010 control of these GPEs. Eventually, the ACPICA core will not execute any
6012 methods, since the host already must execute them. Also, additional
6014 were made to help ensure that the reference counts are kept in proper
6015 synchronization with reality. Rafael J. Wysocki.
6017 1) Ensure that GPEs are not enabled twice during initialization.
6018 2) Ensure that GPE enable masks stay in sync with the reference count.
6019 3) Do not inadvertently enable GPEs when writing GPE registers.
6020 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6021 interface. This interface will set or clear individual GPEs for wakeup.
6022 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6024 are now used for "runtime" GPEs only.
6026 Changed the behavior of the GPE install/remove handler interfaces. The
6029 no longer disabled during this process, as it was found to cause problems
6031 some machines. Rafael J. Wysocki.
6033 Reverted a change introduced in version 20100528 to enable Embedded
6034 Controller multi-byte transfers. This change was found to cause problems
6036 Index Fields and possibly Bank Fields. It will be reintroduced when these
6037 problems have been resolved.
6039 Fixed a problem with references to Alias objects within Package Objects.
6041 reference to an Alias within the definition of a Package was not always
6042 resolved properly. Aliases to objects like Processors, Thermal zones,
6044 were resolved to the actual object instead of a reference to the object
6047 should be. Package objects are only allowed to contain integer, string,
6048 buffer, package, and reference objects. Redhat bugzilla 608648.
6050 Example Code and Data Size: These are the sizes for the OS-independent
6051 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6052 debug version of the code includes the debug output trace mechanism and
6054 much larger code and data size.
6057 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6058 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6060 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6061 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6063 2) iASL Compiler/Disassembler and Tools:
6065 iASL: Implemented a new compiler subsystem to allow definition and
6066 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6068 are called "ACPI Data Tables", and the new compiler is the "Data Table
6069 Compiler". This compiler is intended to simplify the existing error-prone
6070 process of creating these tables for the BIOS, as well as allowing the
6071 disassembly, modification, recompilation, and override of existing ACPI
6073 tables. See the iASL User Guide for detailed information.
6075 iASL: Implemented a new Template Generator option in support of the new
6077 Table Compiler. This option will create examples of all known ACPI tables
6078 that can be used as the basis for table development. See the iASL
6079 documentation and the -T option.
6081 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6084 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6085 object files in the local directory so that there can be no collisions
6086 between the shared files between them that are generated with different
6089 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6091 the #define __APPLE__ to enable this support.
6093 ----------------------------------------
6094 28 May 2010. Summary of changes for version 20100528:
6096 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6097 available at www.acpi.info. This is primarily an errata release.
6099 1) ACPI CA Core Subsystem:
6101 Undefined ACPI tables: We are looking for the definitions for the
6103 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6105 Implemented support to enable multi-byte transfers for Embedded
6107 (EC) operation regions. Previously, the maximum data size passed to the
6109 operation region handler was a single byte. There are often EC Fields
6111 than one byte that need to be transferred, and it is useful for the EC
6113 to lock these as a single transaction. This change enables single
6115 larger than 8 bits. This effectively changes the access to the EC space
6117 ByteAcc to AnyAcc, and will probably require changes to the host OS
6119 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6121 transfers. Alexey Starikovskiy, Lin Ming
6123 Implemented a performance enhancement for namespace search and access.
6125 change enhances the performance of namespace searches and walks by adding
6127 backpointer to the parent in each namespace node. On large namespaces,
6129 change can improve overall ACPI performance by up to 9X. Adding a pointer
6131 each namespace node increases the overall size of the internal namespace
6133 about 5%, since each namespace entry usually consists of both a namespace
6134 node and an ACPI operand object. However, this is the first growth of the
6135 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6137 Implemented a performance optimization that reduces the number of
6139 walks. On control method exit, only walk the namespace if the method is
6141 to have created namespace objects outside of its local scope. Previously,
6143 entire namespace was traversed on each control method exit. This change
6145 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6148 Added support to truncate I/O addresses to 16 bits for Windows
6150 Some ASL code has been seen in the field that inadvertently has bits set
6151 above bit 15. This feature is optional and is enabled if the BIOS
6153 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6156 Added support to limit the maximum time for the ASL Sleep() operator. To
6157 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6158 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6161 Added run-time validation support for the _WDG and_WED Microsoft
6163 methods. These objects are defined by "Windows Instrumentation", and are
6165 part of the ACPI spec. ACPICA BZ 860.
6167 Expanded all statistic counters used during namespace and device
6168 initialization from 16 to 32 bits in order to support very large
6171 Replaced all instances of %d in printf format specifiers with %u since
6173 all integers in ACPICA are unsigned.
6175 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6179 Example Code and Data Size: These are the sizes for the OS-independent
6180 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6181 debug version of the code includes the debug output trace mechanism and
6183 much larger code and data size.
6186 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6187 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6189 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6190 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6192 2) iASL Compiler/Disassembler and Tools:
6194 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6195 methods. These objects are defined by "Windows Instrumentation", and are
6197 part of the ACPI spec. ACPICA BZ 860.
6199 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6200 option will disable the tracking mechanism, which improves performance
6203 AcpiExec: Restructured the command line options into -d (disable) and -e
6206 ----------------------------------------
6207 28 April 2010. Summary of changes for version 20100428:
6209 1) ACPI CA Core Subsystem:
6211 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6212 including FADT-based and GPE Block Devices, execute any _PRW methods in
6214 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6215 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6216 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6217 Devices. Provides compatibility with other ACPI implementations. Two new
6218 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6221 Fixed a regression introduced in version 20100331 within the table
6223 where initial table loading could fail. This was introduced in the fix
6225 AcpiReallocateRootTable. Also, renamed some of fields in the table
6227 data structures to clarify their meaning and use.
6229 Fixed a possible allocation overrun during internal object copy in
6230 AcpiUtCopySimpleObject. The original code did not correctly handle the
6232 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6235 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6236 possible access beyond end-of-allocation. Also, now fully validate
6238 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6240 Example Code and Data Size: These are the sizes for the OS-independent
6241 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6242 debug version of the code includes the debug output trace mechanism and
6244 much larger code and data size.
6247 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6248 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6250 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6251 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6253 2) iASL Compiler/Disassembler and Tools:
6255 iASL: Implemented Min/Max/Len/Gran validation for address resource
6256 descriptors. This change implements validation for the address fields
6258 are common to all address-type resource descriptors. These checks are
6259 implemented: Checks for valid Min/Max, length within the Min/Max window,
6260 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6262 table 6-40 in the ACPI 4.0a specification. Also split the large
6264 and aslrestype2.c files into five new files. ACPICA BZ 840.
6266 iASL: Added support for the _Wxx predefined names. This support was
6268 and these names were not recognized by the compiler as valid predefined
6269 names. ACPICA BZ 851.
6271 iASL: Added an error for all predefined names that are defined to return
6273 value and thus must be implemented as Control Methods. These include all
6275 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6276 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6278 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6280 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6282 dynamically loaded via the Load() operator. Also cleaned up output for
6285 ta and -tc options. ACPICA BZ 853.
6287 Tests: Added a new file with examples of extended iASL error checking.
6288 Demonstrates the advanced error checking ability of the iASL compiler.
6289 Available at tests/misc/badcode.asl.
6291 ----------------------------------------
6292 31 March 2010. Summary of changes for version 20100331:
6294 1) ACPI CA Core Subsystem:
6296 Completed a major update for the GPE support in order to improve support
6298 shared GPEs and to simplify both host OS and ACPICA code. Added a
6300 count mechanism to support shared GPEs that require multiple device
6302 Several external interfaces have changed. One external interface has been
6303 removed. One new external interface was added. Most of the GPE external
6304 interfaces now use the GPE spinlock instead of the events mutex (and the
6305 Flags parameter for many GPE interfaces has been removed.) See the
6307 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6309 Wysocki. ACPICA BZ 831.
6312 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6318 Implemented write support for DataTable operation regions. These regions
6320 defined via the DataTableRegion() operator. Previously, only read support
6322 implemented. The ACPI specification allows DataTableRegions to be
6326 Implemented a new subsystem option to force a copy of the DSDT to local
6327 memory. Optionally copy the entire DSDT to local memory (instead of
6329 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6331 the original DSDT, creating the need for this option. Default is FALSE,
6335 Implemented detection of a corrupted or replaced DSDT. This change adds
6336 support to detect a DSDT that has been corrupted and/or replaced from
6338 the OS (by firmware). This is typically catastrophic for the system, but
6340 been seen on some machines. Once this problem has been detected, the DSDT
6341 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6343 Fixed two problems with AcpiReallocateRootTable during the root table
6345 When copying the root table to the new allocation, the length used was
6346 incorrect. The new size was used instead of the current table size,
6348 too much data was copied. Also, the count of available slots for ACPI
6350 was not set correctly. Alexey Starikovskiy, Bob Moore.
6352 Example Code and Data Size: These are the sizes for the OS-independent
6353 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6354 debug version of the code includes the debug output trace mechanism and
6356 much larger code and data size.
6359 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6360 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6362 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6363 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6365 2) iASL Compiler/Disassembler and Tools:
6367 iASL: Implement limited typechecking for values returned from predefined
6368 control methods. The type of any returned static (unnamed) object is now
6369 validated. For example, Return(1). ACPICA BZ 786.
6371 iASL: Fixed a predefined name object verification regression. Fixes a
6373 introduced in version 20100304. An error is incorrectly generated if a
6374 predefined name is declared as a static named object with a value defined
6375 using the keywords "Zero", "One", or "Ones". Lin Ming.
6377 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6379 reducing the requested registry access rights. ACPICA BZ 842.
6381 Disassembler: fixed a possible fault when generating External()
6383 Introduced in commit ae7d6fd: Properly handle externals with parent-
6385 (carat). Fixes a string length allocation calculation. Lin Ming.
6387 ----------------------------------------
6388 04 March 2010. Summary of changes for version 20100304:
6390 1) ACPI CA Core Subsystem:
6392 Fixed a possible problem with the AML Mutex handling function
6393 AcpiExReleaseMutex where the function could fault under the very rare
6394 condition when the interpreter has blocked, the interpreter lock is
6396 the interpreter is then reentered via the same thread, and attempts to
6397 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6401 Implemented additional configuration support for the AML "Debug Object".
6402 Output from the debug object can now be enabled via a global variable,
6403 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6405 This debug output is now available in the release version of ACPICA
6407 of just the debug version. Also, the entire debug output module can now
6409 configured out of the ACPICA build if desired. One new file added,
6410 executer/exdebug.c. Lin Ming, Bob Moore.
6412 Added header support for the ACPI MCHI table (Management Controller Host
6413 Interface Table). This table was added in ACPI 4.0, but the defining
6415 has only recently become available.
6417 Standardized output of integer values for ACPICA warnings/errors. Always
6419 0x prefix for hex output, always use %u for unsigned integer decimal
6421 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6423 invocations.) These invocations were converted from the original
6424 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6426 Example Code and Data Size: These are the sizes for the OS-independent
6427 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6428 debug version of the code includes the debug output trace mechanism and
6430 much larger code and data size.
6433 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6434 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6436 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6437 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6439 2) iASL Compiler/Disassembler and Tools:
6441 iASL: Implemented typechecking support for static (non-control method)
6442 predefined named objects that are declared with the Name() operator. For
6443 example, the type of this object is now validated to be of type Integer:
6444 Name(_BBN, 1). This change migrates the compiler to using the core
6446 name table instead of maintaining a local version. Added a new file,
6447 aslpredef.c. ACPICA BZ 832.
6449 Disassembler: Added support for the ACPI 4.0 MCHI table.
6451 ----------------------------------------
6452 21 January 2010. Summary of changes for version 20100121:
6454 1) ACPI CA Core Subsystem:
6456 Added the 2010 copyright to all module headers and signons. This affects
6457 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6458 tools/utilities, and the test suites.
6460 Implemented a change to the AcpiGetDevices interface to eliminate
6462 invocations of the _STA method. In the case where a specific _HID is
6463 requested, do not run _STA until a _HID match is found. This eliminates
6464 potentially dozens of _STA calls during a search for a particular
6466 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6468 Implemented an additional repair for predefined method return values.
6470 to repair unexpected NULL elements within returned Package objects.
6473 Integer of value zero, a NULL String, or a zero-length Buffer as
6475 ACPICA BZ 818. Lin Ming, Bob Moore.
6477 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6479 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6481 64-bit AML integers). It is now obsolete and this change removes it from
6483 ACPICA code base, replaced by UINT64. The original typedef has been
6485 for now for compatibility with existing device driver code. ACPICA BZ
6488 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6490 the parse tree object.
6492 Added additional warning options for the gcc-4 generation. Updated the
6494 accordingly. This includes some code restructuring to eliminate
6496 code, elimination of some gotos, elimination of unused return values,
6498 additional casting, and removal of redundant declarations.
6500 Example Code and Data Size: These are the sizes for the OS-independent
6501 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6502 debug version of the code includes the debug output trace mechanism and
6504 much larger code and data size.
6507 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6508 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6510 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6511 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6513 2) iASL Compiler/Disassembler and Tools:
6515 No functional changes for this release.
6517 ----------------------------------------
6518 14 December 2009. Summary of changes for version 20091214:
6520 1) ACPI CA Core Subsystem:
6522 Enhanced automatic data type conversions for predefined name repairs.
6524 change expands the automatic repairs/conversions for predefined name
6526 values to make Integers, Strings, and Buffers fully interchangeable.
6529 Buffer can be converted to a Package of Integers if necessary. The
6531 module was completely restructured. Lin Ming, Bob Moore.
6533 Implemented automatic removal of null package elements during predefined
6535 repairs. This change will automatically remove embedded and trailing NULL
6536 package elements from returned package objects that are defined to
6539 variable number of sub-packages. The driver is then presented with a
6541 with no null elements to deal with. ACPICA BZ 819.
6543 Implemented a repair for the predefined _FDE and _GTM names. The expected
6544 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6546 possible problems (both seen in the field), where a package of integers
6548 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6551 Implemented additional module-level code support. This change will
6553 execute module-level code that is not at the root of the namespace (under
6555 Device object, etc.). Now executes the code within the current scope
6557 of the root. ACPICA BZ 762. Lin Ming.
6559 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6561 problem where mutex errors can occur when running a _REG method that is
6563 the same scope as a method-defined operation region or an operation
6565 under a module-level IF block. This type of code is rare, so the problem
6567 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6569 Fixed a possible memory leak during module-level code execution. An
6571 could be leaked for each block of executed module-level code if the
6572 interpreter slack mode is enabled This change deletes any implicitly
6574 object from the module-level code block. Lin Ming.
6576 Removed messages for successful predefined repair(s). The repair
6578 was considered too wordy. Now, messages are only unconditionally emitted
6580 the return object cannot be repaired. Existing messages for successful
6581 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6584 Example Code and Data Size: These are the sizes for the OS-independent
6585 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6586 debug version of the code includes the debug output trace mechanism and
6588 much larger code and data size.
6591 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6592 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6594 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6595 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6597 2) iASL Compiler/Disassembler and Tools:
6599 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6601 were no longer automatically removed at the termination of the compile.
6603 acpiexec: Implemented the -f option to specify default region fill value.
6604 This option specifies the value used to initialize buffers that simulate
6605 operation regions. Default value is zero. Useful for debugging problems
6607 depend on a specific initial value for a region or field.
6609 ----------------------------------------
6610 12 November 2009. Summary of changes for version 20091112:
6612 1) ACPI CA Core Subsystem:
6614 Implemented a post-order callback to AcpiWalkNamespace. The existing
6615 interface only has a pre-order callback. This change adds an additional
6616 parameter for a post-order callback which will be more useful for bus
6618 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6620 Modified the behavior of the operation region memory mapping cache for
6621 SystemMemory. Ensure that the memory mappings created for operation
6623 do not cross 4K page boundaries. Crossing a page boundary while mapping
6624 regions can cause kernel warnings on some hosts if the pages have
6626 attributes. Such regions are probably BIOS bugs, and this is the
6628 Linux BZ 14445. Lin Ming.
6630 Implemented an automatic repair for predefined methods that must return
6631 sorted lists. This change will repair (by sorting) packages returned by
6633 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6635 and do not contain NULL package elements. Adds one new file,
6636 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6638 Fixed a possible fault during predefined name validation if a return
6640 object contains NULL elements. Also adds a warning if a NULL element is
6641 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6643 include repair or removal of all such NULL elements where possible.
6645 Implemented additional module-level executable AML code support. This
6647 will execute module-level code that is not at the root of the namespace
6648 (under a Device object, etc.) at table load time. Module-level executable
6650 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6652 Implemented a new internal function to create Integer objects. This
6654 simplifies miscellaneous object creation code. ACPICA BZ 823.
6656 Reduced the severity of predefined repair messages, Warning to Info.
6658 the object was successfully repaired, a warning is too severe. Reduced to
6660 info message for now. These messages may eventually be changed to debug-
6664 Example Code and Data Size: These are the sizes for the OS-independent
6665 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6666 debug version of the code includes the debug output trace mechanism and
6668 much larger code and data size.
6671 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6672 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6674 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6675 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6677 2) iASL Compiler/Disassembler and Tools:
6679 iASL: Implemented Switch() with While(1) so that Break works correctly.
6681 change correctly implements the Switch operator with a surrounding
6683 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6685 iASL: Added a message if a package initializer list is shorter than
6687 length. Adds a new remark for a Package() declaration if an initializer
6689 exists, but is shorter than the declared length of the package. Although
6690 technically legal, this is probably a coding error and it is seen in the
6691 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6693 iASL: Fixed a problem where the compiler could fault after the maximum
6695 of errors was reached (200).
6697 acpixtract: Fixed a possible warning for pointer cast if the compiler
6699 level set very high.
6701 ----------------------------------------
6702 13 October 2009. Summary of changes for version 20091013:
6704 1) ACPI CA Core Subsystem:
6706 Fixed a problem where an Operation Region _REG method could be executed
6708 than once. If a custom address space handler is installed by the host
6710 the "initialize operation regions" phase of the ACPICA initialization,
6712 _REG methods for that address space could be executed twice. This change
6713 fixes the problem. ACPICA BZ 427. Lin Ming.
6715 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6716 invocation of "Scope(\)" is executed (change scope to root), one internal
6717 operand object was leaked. Lin Ming.
6719 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6720 return value is defined as a Field object in the AML, and the field
6721 size is less than or equal to the default width of an integer (32 or
6723 can incorrectly return an Integer instead of a Buffer. ACPICA now
6724 automatically repairs this problem. ACPICA BZ 810.
6726 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6728 "OEM Information" field is often incorrectly returned as an Integer with
6729 value zero if the field is not supported by the platform. This is due to
6731 ambiguity in the ACPI specification. The field should always be a string.
6732 ACPICA now automatically repairs this problem by returning a NULL string
6733 within the returned Package. ACPICA BZ 807.
6735 Example Code and Data Size: These are the sizes for the OS-independent
6736 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6737 debug version of the code includes the debug output trace mechanism and
6739 much larger code and data size.
6742 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6743 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6745 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6746 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6748 2) iASL Compiler/Disassembler and Tools:
6750 Disassembler: Fixed a problem where references to external symbols that
6751 contained one or more parent-prefixes (carats) were not handled
6753 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6755 Disassembler: Restructured the code so that all functions that handle
6756 external symbols are in a single module. One new file is added,
6759 AML Debugger: Added a max count argument for the Batch command (which
6760 executes multiple predefined methods within the namespace.)
6762 iASL: Updated the compiler documentation (User Reference.) Available at
6763 http://www.acpica.org/documentation/. ACPICA BZ 750.
6765 AcpiXtract: Updated for Lint and other formatting changes. Close all open
6768 ----------------------------------------
6769 03 September 2009. Summary of changes for version 20090903:
6771 1) ACPI CA Core Subsystem:
6773 For Windows Vista compatibility, added the automatic execution of an _INI
6774 method located at the namespace root (\_INI). This method is executed at
6775 table load time. This support is in addition to the automatic execution
6777 \_SB._INI. Lin Ming.
6779 Fixed a possible memory leak in the interpreter for AML package objects
6781 the package initializer list is longer than the defined size of the
6783 This apparently can only happen if the BIOS changes the package size on
6785 fly (seen in a _PSS object), as ASL compilers do not allow this. The
6786 interpreter will truncate the package to the defined size (and issue an
6788 message), but previously could leave the extra objects undeleted if they
6790 pre-created during the argument processing (such is the case if the
6792 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
6794 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
6795 This has been reported in the field. Previously, ACPICA would zero out
6797 buffer/string. Now, the operation is treated as a noop. Provides Windows
6798 compatibility. ACPICA BZ 803. Lin Ming.
6800 Removed an extraneous error message for ASL constructs of the form
6801 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
6803 are seen in many BIOSs and are once again treated as NOOPs and no error
6805 emitted when they are encountered. ACPICA BZ 785.
6807 Fixed an extraneous warning message if a _DSM reserved method returns a
6808 Package object. _DSM can return any type of object, so validation on the
6809 return type cannot be performed. ACPICA BZ 802.
6811 Example Code and Data Size: These are the sizes for the OS-independent
6812 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6813 debug version of the code includes the debug output trace mechanism and
6815 much larger code and data size.
6818 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6819 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6821 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6822 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6824 2) iASL Compiler/Disassembler and Tools:
6826 iASL: Fixed a problem with the use of the Alias operator and Resource
6827 Templates. The correct alias is now constructed and no error is emitted.
6830 iASL: Implemented the -I option to specify additional search directories
6832 include files. Allows multiple additional search paths for include files.
6833 Directories are searched in the order specified on the command line
6835 the local directory is searched.) ACPICA BZ 800.
6837 iASL: Fixed a problem where the full pathname for include files was not
6838 emitted for warnings/errors. This caused the IDE support to not work
6839 properly. ACPICA BZ 765.
6841 iASL: Implemented the -@ option to specify a Windows-style response file
6842 containing additional command line options. ACPICA BZ 801.
6844 AcpiExec: Added support to load multiple AML files simultaneously (such
6847 DSDT and multiple SSDTs). Also added support for wildcards within the AML
6848 pathname. These features allow all machine tables to be easily loaded and
6849 debugged together. ACPICA BZ 804.
6851 Disassembler: Added missing support for disassembly of HEST table Error
6855 ----------------------------------------
6856 30 July 2009. Summary of changes for version 20090730:
6858 The ACPI 4.0 implementation for ACPICA is complete with this release.
6860 1) ACPI CA Core Subsystem:
6862 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6863 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6865 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6867 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6869 have been some ACPI 4.0 changes to other existing tables. Split the large
6870 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6872 ACPI 4.0: Implemented predefined name validation for all new names. There
6874 31 new names in ACPI 4.0. The predefined validation module was split into
6876 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6878 Implemented support for so-called "module-level executable code". This is
6879 executable AML code that exists outside of any control method and is
6881 to be executed at table load time. Although illegal since ACPI 2.0, this
6883 of code still exists and is apparently still being created. Blocks of
6885 code are now detected and executed as intended. Currently, the code
6887 must exist under either an If, Else, or While construct; these are the
6888 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6890 Implemented an automatic dynamic repair for predefined names that return
6891 nested Package objects. This applies to predefined names that are defined
6893 return a variable-length Package of sub-packages. If the number of sub-
6894 packages is one, BIOS code is occasionally seen that creates a simple
6896 package with no sub-packages. This code attempts to fix the problem by
6897 wrapping a new package object around the existing package. These methods
6899 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6903 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6905 The _HID/_CID matching was broken and no longer matched IDs correctly.
6909 Fixed a problem with AcpiReset where the reset would silently fail if the
6910 register was one of the protected I/O ports. AcpiReset now bypasses the
6912 validation mechanism. This may eventually be driven into the
6916 Fixed a regression related to the recent update of the AcpiRead/Write
6917 interfaces. A sleep/suspend could fail if the optional PM2 Control
6919 does not exist during an attempt to write the Bus Master Arbitration bit.
6920 (However, some hosts already delete the code that writes this bit, and
6922 code may in fact be obsolete at this date.) ACPICA BZ 799.
6924 Fixed a problem where AcpiTerminate could fault if inadvertently called
6926 in succession. ACPICA BZ 795.
6928 Example Code and Data Size: These are the sizes for the OS-independent
6929 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6930 debug version of the code includes the debug output trace mechanism and
6932 much larger code and data size.
6935 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6936 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6938 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6939 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6941 2) iASL Compiler/Disassembler and Tools:
6943 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6944 changes to existing tables. ACPICA BZ 775.
6946 ----------------------------------------
6947 25 June 2009. Summary of changes for version 20090625:
6949 The ACPI 4.0 Specification was released on June 16 and is available at
6950 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6951 continue for the next few releases.
6953 1) ACPI CA Core Subsystem:
6955 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6956 address space. Includes support for bi-directional data buffers and an
6958 address space handler (to be installed by an IPMI device driver.) ACPICA
6962 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6964 support in both the header files and the disassembler.
6966 Completed a major update for the AcpiGetObjectInfo external interface.
6968 - Support for variable, unlimited length HID, UID, and CID strings.
6969 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6971 - Call the _SxW power methods on behalf of a device object.
6972 - Determine if a device is a PCI root bridge.
6973 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6974 These changes will require an update to all callers of this interface.
6976 the updated ACPICA Programmer Reference for details. One new source file
6978 been added - utilities/utids.c. ACPICA BZ 368, 780.
6980 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6981 transfers. The Value parameter has been extended from 32 bits to 64 bits
6983 order to support new ACPI 4.0 tables. These changes will require an
6986 all callers of these interfaces. See the ACPICA Programmer Reference for
6987 details. ACPICA BZ 768.
6989 Fixed several problems with AcpiAttachData. The handler was not invoked
6991 the host node was deleted. The data sub-object was not automatically
6993 when the host node was deleted. The interface to the handler had an
6995 parameter, this was removed. ACPICA BZ 778.
6997 Enhanced the function that dumps ACPI table headers. All non-printable
6998 characters in the string fields are now replaced with '?' (Signature,
7000 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7001 these fields are occasionally seen in the field. ACPICA BZ 788.
7003 Fixed a problem with predefined method repair code where the code that
7004 attempts to repair/convert an object of incorrect type is only executed
7006 the first time the predefined method is called. The mechanism that
7008 warnings on subsequent calls was interfering with the repair mechanism.
7011 Fixed a possible memory leak in the predefined validation/repair code
7014 buffer is automatically converted to an expected string object.
7016 Removed obsolete 16-bit files from the distribution and from the current
7018 tree head. ACPICA BZ 776.
7020 Example Code and Data Size: These are the sizes for the OS-independent
7021 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7022 debug version of the code includes the debug output trace mechanism and
7024 much larger code and data size.
7027 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7028 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7030 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7031 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7033 2) iASL Compiler/Disassembler and Tools:
7035 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7036 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7038 ACPI 4.0: iASL - implemented compile-time validation support for all new
7039 predefined names and control methods (31 total). ACPICA BZ 769.
7041 ----------------------------------------
7042 21 May 2009. Summary of changes for version 20090521:
7044 1) ACPI CA Core Subsystem:
7046 Disabled the preservation of the SCI enable bit in the PM1 control
7048 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7051 a "preserved" bit - "OSPM always preserves this bit position", section
7052 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7053 because the bit needs to be explicitly set by the OS as a workaround. No
7054 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7055 attempts to preserve this bit.
7057 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7058 incorrectly formed _PRT package could cause a fault. Added validation to
7059 ensure that each package element is actually a sub-package.
7061 Implemented a new interface to install or override a single control
7063 AcpiInstallMethod. This interface is useful when debugging in order to
7065 an existing method or to install a missing method without having to
7067 the entire ACPI table. See the ACPICA Programmer Reference for use and
7068 examples. Lin Ming, Bob Moore.
7070 Fixed several reference count issues with the DdbHandle object that is
7071 created from a Load or LoadTable operator. Prevent premature deletion of
7073 object. Also, mark the object as invalid once the table has been
7075 This is needed because the handle itself may not be deleted after the
7077 unload, depending on whether it has been stored in a named object by the
7080 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7081 mutexes of the same sync level are acquired but then not released in
7083 opposite order, the internally maintained Current Sync Level becomes
7085 and can cause subsequent execution errors. ACPICA BZ 471.
7087 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7088 specification has been changed to make the SyncLevel for mutex objects
7090 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7092 same as the current sync level. This makes more sense than the previous
7094 (SyncLevel less than or equal). This change updates the code to match the
7097 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7099 (local) cache must be locked during all cache object deletions. Andrew
7102 Updated the Load operator to use operation region interfaces. This
7104 direct memory mapping with region access calls. Now, all region accesses
7106 through the installed region handler as they should.
7108 Simplified and optimized the NsGetNextNode function. Reduced parameter
7110 and reduced code for this frequently used function.
7112 Example Code and Data Size: These are the sizes for the OS-independent
7113 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7114 debug version of the code includes the debug output trace mechanism and
7116 much larger code and data size.
7119 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7120 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7122 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7123 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7125 2) iASL Compiler/Disassembler and Tools:
7127 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7129 with sub-table disassembly and handling invalid sub-tables. Attempt
7131 after an invalid sub-table ID.
7133 ----------------------------------------
7134 22 April 2009. Summary of changes for version 20090422:
7136 1) ACPI CA Core Subsystem:
7138 Fixed a compatibility issue with the recently released I/O port
7140 mechanism. For windows compatibility, 1) On a port protection violation,
7141 simply ignore the request and do not return an exception (allow the
7143 method to continue execution.) 2) If only part of the request overlaps a
7144 protected port, read/write the individual ports that are not protected.
7148 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7150 breaks into the AML debugger if the debugger is present. This matches the
7151 ACPI-defined behavior.
7153 Fixed several possible warnings related to the use of the configurable
7154 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7155 pointer with no warnings. Also fixes several warnings in printf-like
7156 statements for the 64-bit build when the type is configured as a pointer.
7159 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7161 warning options.) Examples include printf formats, aliasing, unused
7163 missing prototypes, missing switch default statements, use of non-ANSI
7164 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7166 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7168 Example Code and Data Size: These are the sizes for the OS-independent
7169 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7170 debug version of the code includes the debug output trace mechanism and
7172 much larger code and data size.
7175 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7176 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7178 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7179 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7181 2) iASL Compiler/Disassembler and Tools:
7183 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7188 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7190 correctly digest Windows/DOS formatted files (with CR/LF).
7192 iASL: Added a new option for "quiet mode" (-va) that produces only the
7193 compilation summary, not individual errors and warnings. Useful for large
7196 AcpiExec: Implemented a new option (-z) to enable a forced
7198 timeout that can be used to detect hang conditions during execution of
7200 code (includes both internal semaphores and AML-defined mutexes and
7203 Added new makefiles for the generation of acpica in a generic unix-like
7204 environment. These makefiles are intended to generate the acpica tools
7206 utilities from the original acpica git source tree structure.
7208 Test Suites: Updated and cleaned up the documentation files. Updated the
7209 copyrights to 2009, affecting all source files. Use the new version of
7211 with quiet mode. Increased the number of available semaphores in the
7213 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7215 an alternate implementation of the semaphore timeout to allow aslts to
7216 execute fully on Cygwin.
7218 ----------------------------------------
7219 20 March 2009. Summary of changes for version 20090320:
7221 1) ACPI CA Core Subsystem:
7223 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7225 unloads. Added a reader/writer locking mechanism to allow multiple
7227 namespace walks (readers), but block a dynamic table unload until it can
7229 exclusive write access to the namespace. This fixes a problem where a
7231 unload could (possibly catastrophically) delete the portion of the
7233 that is currently being examined by a walk. Adds a new file, utlock.c,
7235 implements the reader/writer lock mechanism. ACPICA BZ 749.
7237 Fixed a regression introduced in version 20090220 where a change to the
7239 handling could cause the ACPICA subsystem to access non-existent I/O
7242 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7244 FADT can contain both 32-bit and 64-bit versions of these addresses.
7245 Previously, the 64-bit versions were favored, meaning that if both 32 and
7247 versions were valid, but not equal, the 64-bit version was used. This was
7248 found to cause some machines to fail. Now, in this case, the 32-bit
7250 is used instead. This now matches the Windows behavior.
7252 Implemented a new mechanism to protect certain I/O ports. Provides
7254 compatibility and protects the standard PC I/O ports from access via AML
7255 code. Adds a new file, hwvalid.c
7257 Fixed a possible extraneous warning message from the FADT support. The
7258 message warns of a 32/64 length mismatch between the legacy and GAS
7259 definitions for a register.
7261 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7263 made obsolete by the port protection mechanism above. It was previously
7265 to validate the entire address range of an operation region, which could
7267 incorrect if the range included illegal ports, but fields within the
7268 operation region did not actually access those ports. Validation is now
7269 performed on a per-field basis instead of the entire region.
7271 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7272 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7274 means a read/modify/write when writing to the register. However, for
7276 registers, writing a one means clear the event. Writing a zero means
7278 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7280 and the ACPICA code now simply always writes a zero to the ignored bit.
7282 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7284 per the ACPI specification, for the control registers, preserve
7285 (read/modify/write) all bits that are defined as either reserved or
7288 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7289 When reading the register, zero the write-only bits as per the ACPI spec.
7290 ACPICA BZ 443. Lin Ming.
7292 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7293 wants to reply true to this request. The Windows strings are the only
7295 through the AML that are tested and known to work properly.
7298 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7299 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7301 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7302 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7304 2) iASL Compiler/Disassembler and Tools:
7306 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7310 ----------------------------------------
7311 20 February 2009. Summary of changes for version 20090220:
7313 1) ACPI CA Core Subsystem:
7315 Optimized the ACPI register locking. Removed locking for reads from the
7317 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7319 not required when reading the single-bit registers. The
7320 AcpiGetRegisterUnlocked function is no longer needed and has been
7322 This will improve performance for reads on these registers. ACPICA BZ
7325 Fixed the parameter validation for AcpiRead/Write. Now return
7326 AE_BAD_PARAMETER if the input register pointer is null, and
7329 the register has an address of zero. Previously, these cases simply
7331 AE_OK. For optional registers such as PM1B status/enable/control, the
7333 should check for a valid register address before calling. ACPICA BZ 748.
7335 Renamed the external ACPI bit register access functions. Renamed
7336 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7337 functions. The new names are AcpiReadBitRegister and
7338 AcpiWriteBitRegister.
7339 Also, restructured the code for these functions by simplifying the code
7341 and condensing duplicate code to reduce code size.
7343 Added new functions to transparently handle the possibly split PM1 A/B
7344 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7346 now handle the split registers for PM1 Status, Enable, and Control.
7351 Added a function to handle the PM1 control registers,
7352 AcpiHwWritePm1Control.
7353 This function writes both of the PM1 control registers (A/B). These
7355 are different than the PM1 A/B status and enable registers in that
7357 values can be written to the A/B registers. Most notably, the SLP_TYP
7359 can be different, as per the values returned from the _Sx predefined
7362 Removed an extra register write within AcpiHwClearAcpiStatus. This
7364 was writing an optional PM1B status register twice. The existing call to
7366 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7368 register. ACPICA BZ 751.
7370 Split out the PM1 Status registers from the FADT. Added new globals for
7372 registers (A/B), similar to the way the PM1 Enable registers are handled.
7373 Instead of overloading the FADT Event Register blocks. This makes the
7375 clearer and less prone to error.
7377 Fixed the warning message for when the platform contains too many ACPI
7379 for the default size of the global root table data structure. The
7381 for the truncation value was incorrect.
7383 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7384 obsolete macro, since it is now a simple reference to ->common.type.
7386 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7388 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7389 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7390 simply SLEEP_TYPE. ACPICA BZ 754.
7392 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7393 function is only needed on 64-bit host operating systems and is thus not
7394 included for 32-bit hosts.
7396 Debug output: print the input and result for invocations of the _OSI
7398 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7400 verbosity of this debug level. Len Brown.
7402 Example Code and Data Size: These are the sizes for the OS-independent
7403 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7404 debug version of the code includes the debug output trace mechanism and
7406 much larger code and data size.
7409 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7410 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7412 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7413 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7415 2) iASL Compiler/Disassembler and Tools:
7417 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7418 various legal performance profiles.
7420 ----------------------------------------
7421 23 January 2009. Summary of changes for version 20090123:
7423 1) ACPI CA Core Subsystem:
7425 Added the 2009 copyright to all module headers and signons. This affects
7426 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7427 the tools/utilities.
7429 Implemented a change to allow the host to override any ACPI table,
7431 dynamically loaded tables. Previously, only the DSDT could be replaced by
7433 host. With this change, the AcpiOsTableOverride interface is called for
7435 table found in the RSDT/XSDT during ACPICA initialization, and also
7437 a table is dynamically loaded via the AML Load operator.
7439 Updated FADT flag definitions, especially the Boot Architecture flags.
7441 Debugger: For the Find command, automatically pad the input ACPI name
7443 underscores if the name is shorter than 4 characters. This enables a
7445 with the actual namespace entry which is itself padded with underscores.
7447 Example Code and Data Size: These are the sizes for the OS-independent
7448 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7449 debug version of the code includes the debug output trace mechanism and
7451 much larger code and data size.
7454 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7455 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7457 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7458 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7460 2) iASL Compiler/Disassembler and Tools:
7462 Fix build error under Bison-2.4.
7464 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7466 flags. Now decode all flags, regardless of the FADT version. Flag output
7467 includes the FADT version which first defined each flag.
7469 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7471 DSDT). Windows only.
7473 ----------------------------------------
7474 04 December 2008. Summary of changes for version 20081204:
7476 1) ACPI CA Core Subsystem:
7478 The ACPICA Programmer Reference has been completely updated and revamped
7480 this release. This includes updates to the external interfaces, OSL
7481 interfaces, the overview sections, and the debugger reference.
7483 Several new ACPICA interfaces have been implemented and documented in the
7484 programmer reference:
7485 AcpiReset - Writes the reset value to the FADT-defined reset register.
7486 AcpiDisableAllGpes - Disable all available GPEs.
7487 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7488 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7489 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7490 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7491 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7493 Most of the public ACPI hardware-related interfaces have been moved to a
7495 file, components/hardware/hwxface.c
7497 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7498 register lengths within the FADT are now used, and the low level ACPI
7499 register access no longer hardcodes the ACPI register lengths. Given that
7500 there may be some risk in actually trusting the FADT register lengths, a
7502 time option was added to fall back to the default hardcoded lengths if
7504 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7505 option is set to true for now, and a warning is issued if a suspicious
7507 register length is overridden with the default value.
7509 Fixed a reference count issue in NsRepairObject. This problem was
7511 in version 20081031 as part of a fix to repair Buffer objects within
7514 Added semaphore support to the Linux/Unix application OS-services layer
7515 (OSL). ACPICA BZ 448. Lin Ming.
7517 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7519 be implemented in the OSL, or will binary semaphores be used instead.
7521 Example Code and Data Size: These are the sizes for the OS-independent
7522 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7523 debug version of the code includes the debug output trace mechanism and
7525 much larger code and data size.
7528 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7529 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7531 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7532 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7534 2) iASL Compiler/Disassembler and Tools:
7536 iASL: Completed the '-e' option to include additional ACPI tables in
7539 aid with disassembly and External statement generation. ACPICA BZ 742.
7543 iASL: Removed the "named object in while loop" error. The compiler cannot
7544 determine how many times a loop will execute. ACPICA BZ 730.
7546 Disassembler: Implemented support for FADT revision 2 (MS extension).
7550 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7553 ----------------------------------------
7554 31 October 2008. Summary of changes for version 20081031:
7556 1) ACPI CA Core Subsystem:
7558 Restructured the ACPICA header files into public/private. acpi.h now
7560 only the "public" acpica headers. All other acpica headers are "private"
7562 should not be included by acpica users. One new file, accommon.h is used
7564 include the commonly used private headers for acpica code generation.
7566 plans include moving all private headers to a new subdirectory.
7568 Implemented an automatic Buffer->String return value conversion for
7569 predefined ACPI methods. For these methods (such as _BIF), added
7571 conversion for return objects that are required to be a String, but a
7573 was found instead. This can happen when reading string battery data from
7575 operation region, because it used to be difficult to convert the data
7577 buffer to string from within the ASL. Ensures that the host OS is
7579 with a valid null-terminated string. Linux BZ 11822.
7581 Updated the FACS waking vector interfaces. Split
7582 AcpiSetFirmwareWakingVector
7583 into two: one for the 32-bit vector, another for the 64-bit vector. This
7585 required because the host OS must setup the wake much differently for
7587 vector (real vs. protected mode, etc.) and the interface itself should
7590 deciding which vector to use. Also, eliminated the
7591 GetFirmwareWakingVector
7592 interface, as it served no purpose (only the firmware reads the vector,
7594 only writes the vector.) ACPICA BZ 731.
7596 Implemented a mechanism to escape infinite AML While() loops. Added a
7598 counter to force exit from AML While loops if the count becomes too
7600 This can occur in poorly written AML when the hardware does not respond
7601 within a while loop and the loop does not implement a timeout. The
7603 loop count is configurable. A new exception code is returned when a loop
7605 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7607 Optimized the execution of AML While loops. Previously, a control state
7608 object was allocated and freed for each execution of the loop. The
7609 optimization is to simply reuse the control state for each iteration.
7611 speeds up the raw loop execution time by about 5%.
7613 Enhanced the implicit return mechanism. For Windows compatibility, return
7615 implicit integer of value zero for methods that contain no executable
7617 Such methods are seen in the field as stubs (presumably), and can cause
7618 drivers to fail if they expect a return value. Lin Ming.
7620 Allow multiple backslashes as root prefixes in namepaths. In a fully
7621 qualified namepath, allow multiple backslash prefixes. This can happen
7623 is seen in the field) because of the use of a double-backslash in strings
7624 (since backslash is the escape character) causing confusion. ACPICA BZ
7628 Emit a warning if two different FACS or DSDT tables are discovered in the
7629 FADT. Checks if there are two valid but different addresses for the FACS
7631 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7633 Consolidated the method argument count validation code. Merged the code
7635 validates control method argument counts into the predefined validation
7636 module. Eliminates possible multiple warnings for incorrect argument
7639 Implemented ACPICA example code. Includes code for ACPICA initialization,
7640 handler installation, and calling a control method. Available at
7641 source/tools/examples.
7643 Added a global pointer for FACS table to simplify internal FACS access.
7645 the global pointer instead of using AcpiGetTableByIndex for each FACS
7647 This simplifies the code for the Global Lock and the Firmware Waking
7650 Example Code and Data Size: These are the sizes for the OS-independent
7651 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7652 debug version of the code includes the debug output trace mechanism and
7654 much larger code and data size.
7657 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7658 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7660 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7661 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7663 2) iASL Compiler/Disassembler and Tools:
7665 iASL: Improved disassembly of external method calls. Added the -e option
7667 allow the inclusion of additional ACPI tables to help with the
7670 method invocations and the generation of external declarations during the
7671 disassembly. Certain external method invocations cannot be disassembled
7672 properly without the actual declaration of the method. Use the -e option
7674 include the table where the external method(s) are actually declared.
7676 useful for disassembling SSDTs that make method calls back to the master
7677 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7679 -e dsdt.aml ssdt1.aml
7681 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7682 problem where the use of an alias within a namepath would result in a not
7683 found error or cause the compiler to fault. Also now allows forward
7684 references from the Alias operator itself. ACPICA BZ 738.
7686 ----------------------------------------
7687 26 September 2008. Summary of changes for version 20080926:
7689 1) ACPI CA Core Subsystem:
7691 Designed and implemented a mechanism to validate predefined ACPI methods
7693 objects. This code validates the predefined ACPI objects (objects whose
7695 start with underscore) that appear in the namespace, at the time they are
7696 evaluated. The argument count and the type of the returned object are
7697 validated against the ACPI specification. The purpose of this validation
7699 to detect problems with the BIOS-implemented predefined ACPI objects
7701 the results are returned to the ACPI-related drivers. Future enhancements
7703 include actual repair of incorrect return objects where possible. Two new
7704 files are nspredef.c and acpredef.h.
7706 Fixed a fault in the AML parser if a memory allocation fails during the
7708 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7710 Fixed an issue with implicit return compatibility. This change improves
7712 implicit return mechanism to be more compatible with the MS interpreter.
7714 Ming, ACPICA BZ 349.
7716 Implemented support for zero-length buffer-to-string conversions. Allow
7718 length strings during interpreter buffer-to-string conversions. For
7720 during the ToDecimalString and ToHexString operators, as well as implicit
7721 conversions. Fiodor Suietov, ACPICA BZ 585.
7723 Fixed two possible memory leaks in the error exit paths of
7724 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7726 similar in that they use a stack of state objects in order to eliminate
7727 recursion. The stack must be fully unwound and deallocated if an error
7728 occurs. Lin Ming. ACPICA BZ 383.
7730 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7732 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7733 Moore ACPICA BZ 442.
7735 Removed the obsolete version number in module headers. Removed the
7736 "$Revision" number that appeared in each module header. This version
7738 was useful under SourceSafe and CVS, but has no meaning under git. It is
7740 only incorrect, it could also be misleading.
7742 Example Code and Data Size: These are the sizes for the OS-independent
7743 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7744 debug version of the code includes the debug output trace mechanism and
7746 much larger code and data size.
7749 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7750 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7752 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7753 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7755 ----------------------------------------
7756 29 August 2008. Summary of changes for version 20080829:
7758 1) ACPI CA Core Subsystem:
7760 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
7761 Reference. Changes include the elimination of cheating on the Object
7763 for the DdbHandle subtype, addition of a reference class field to
7764 differentiate the various reference types (instead of an AML opcode), and
7766 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
7768 Reduce an error to a warning for an incorrect method argument count.
7769 Previously aborted with an error if too few arguments were passed to a
7770 control method via the external ACPICA interface. Now issue a warning
7772 and continue. Handles the case where the method inadvertently declares
7774 many arguments, but does not actually use the extra ones. Applies mainly
7776 the predefined methods. Lin Ming. Linux BZ 11032.
7778 Disallow the evaluation of named object types with no intrinsic value.
7780 AE_TYPE for objects that have no value and therefore evaluation is
7782 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
7784 these types were allowed, but an exception would be generated at some
7786 during the evaluation. Now, the error is generated up front.
7788 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
7789 (nsnames.c). Fixes a leak in the error exit path.
7791 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
7793 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
7795 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
7798 Removed obsolete and/or unused exception codes from the acexcep.h header.
7799 There is the possibility that certain device drivers may be affected if
7801 use any of these exceptions.
7803 The ACPICA documentation has been added to the public git source tree,
7805 acpica/documents. Included are the ACPICA programmer reference, the iASL
7806 compiler reference, and the changes.txt release logfile.
7808 Example Code and Data Size: These are the sizes for the OS-independent
7809 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7810 debug version of the code includes the debug output trace mechanism and
7812 much larger code and data size.
7815 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7816 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7818 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7819 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7821 2) iASL Compiler/Disassembler and Tools:
7823 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
7824 defines _SCP with 3 arguments. Previous versions defined it with only 1
7825 argument. iASL now allows both definitions.
7827 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
7829 length subtables when disassembling ACPI tables. Also fixed a couple of
7830 errors where a full 16-bit table type field was not extracted from the
7834 acpisrc: Improve comment counting mechanism for generating source code
7835 statistics. Count first and last lines of multi-line comments as
7837 not comment lines. Handle Linux legal header in addition to standard
7841 ----------------------------------------
7843 29 July 2008. Summary of changes for version 20080729:
7845 1) ACPI CA Core Subsystem:
7847 Fix a possible deadlock in the GPE dispatch. Remove call to
7848 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
7850 to acquire the GPE lock but can deadlock since the GPE lock is already
7852 at dispatch time. This code was introduced in version 20060831 as a
7854 to Linux BZ 6881 and has since been removed from Linux.
7856 Add a function to dereference returned reference objects. Examines the
7858 object from a call to AcpiEvaluateObject. Any Index or RefOf references
7860 automatically dereferenced in an attempt to return something useful
7862 reference types cannot be converted into an external ACPI_OBJECT.)
7864 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7866 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7867 subtables for the MADT and one new subtable for the SRAT. Includes
7868 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7870 Specification, June 2008.
7872 Additional error checking for pathname utilities. Add error check after
7874 calls to AcpiNsGetPathnameLength. Add status return from
7875 AcpiNsBuildExternalPath and check after all calls. Add parameter
7877 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7879 Return status from the global init function AcpiUtGlobalInitialize. This
7881 used by both the kernel subsystem and the utilities such as iASL
7883 The function could possibly fail when the caches are initialized. Yang
7886 Add a function to decode reference object types to strings. Created for
7887 improved error messages.
7889 Improve object conversion error messages. Better error messages during
7891 conversion from internal to the external ACPI_OBJECT. Used for external
7893 to AcpiEvaluateObject.
7895 Example Code and Data Size: These are the sizes for the OS-independent
7896 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7897 debug version of the code includes the debug output trace mechanism and
7899 much larger code and data size.
7902 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7903 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7905 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7906 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7908 2) iASL Compiler/Disassembler and Tools:
7910 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7912 introduced in version 20080701. If the object being evaluated (via
7914 command) is not a method, the debugger can hang while trying to obtain
7916 existent parameters.
7918 iASL: relax error for using reserved "_T_x" identifiers. These names can
7919 appear in a disassembled ASL file if they were emitted by the original
7920 compiler. Instead of issuing an error or warning and forcing the user to
7921 manually change these names, issue a remark instead.
7923 iASL: error if named object created in while loop. Emit an error if any
7925 object is created within a While loop. If allowed, this code will
7928 run-time error on the second iteration of the loop when an attempt is
7931 create the same named object twice. ACPICA bugzilla 730.
7933 iASL: Support absolute pathnames for include files. Add support for
7935 pathnames within the Include operator. previously, only relative
7939 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7941 The ACPI spec requires one interrupt minimum. BZ 423
7943 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7944 Handles the case for the Interrupt Resource Descriptor where
7945 the ResourceSource argument is omitted but ResourceSourceIndex
7946 is present. Now leave room for the Index. BZ 426
7948 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7950 where an error message is emitted if the target does not exist. BZ 516
7952 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7953 (get ACPI tables on Windows). This was apparently broken in version
7956 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7958 the EOF happens immediately after the last table in the input file. Print
7959 completion message. Previously, no message was displayed in this case.
7961 ----------------------------------------
7962 01 July 2008. Summary of changes for version 20080701:
7964 0) Git source tree / acpica.org
7966 Fixed a problem where a git-clone from http would not transfer the entire
7969 1) ACPI CA Core Subsystem:
7971 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7972 enable bit. Now performs a read-change-write of the enable register
7974 of simply writing out the cached enable mask. This will prevent
7976 enabling of GPEs if a rogue GPE is received during initialization (before
7978 handlers are installed.)
7980 Implemented a copy for dynamically loaded tables. Previously, dynamically
7981 loaded tables were simply mapped - but on some machines this memory is
7982 corrupted after suspend. Now copy the table to a local buffer. For the
7983 OpRegion case, added checksum verify. Use the table length from the table
7984 header, not the region length. For the Buffer case, use the table length
7985 also. Dennis Noordsij, Bob Moore. BZ 10734
7987 Fixed a problem where the same ACPI table could not be dynamically loaded
7989 unloaded more than once. Without this change, a table cannot be loaded
7991 once it has been loaded/unloaded one time. The current mechanism does not
7992 unregister a table upon an unload. During a load, if the same table is
7994 this no longer returns an exception. BZ 722
7996 Fixed a problem where the wrong descriptor length was calculated for the
7997 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7999 are calculated as 12 bytes long, but the actual length in the internal
8000 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8002 by Linn Crosetto. BZ 728
8004 Fixed a possible memory leak in the Unload operator. The DdbHandle
8006 by Load() did not have its reference count decremented during unload,
8008 to a memory leak. Lin Ming. BZ 727
8010 Fixed a possible memory leak when deleting thermal/processor objects. Any
8011 associated notify handlers (and objects) were not being deleted. Fiodor
8014 Fixed the ordering of the ASCII names in the global mutex table to match
8016 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8018 Vegard Nossum. BZ 726
8020 Enhanced the AcpiGetObjectInfo interface to return the number of required
8021 arguments if the object is a control method. Added this call to the
8023 so the proper number of default arguments are passed to a method. This
8024 prevents a warning when executing methods from AcpiExec.
8026 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8027 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8029 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8031 Example Code and Data Size: These are the sizes for the OS-independent
8032 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8033 debug version of the code includes the debug output trace mechanism and
8035 much larger code and data size.
8038 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8039 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8041 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8042 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8044 2) iASL Compiler/Disassembler and Tools:
8046 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8047 resource descriptor names.
8049 iASL: Detect invalid ASCII characters in input (windows version). Removed
8051 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8052 characters in the input. BZ 441
8054 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8056 "result of operation not used" warning when the DDB handle returned from
8057 LoadTable is not used. The warning is not needed. BZ 590
8059 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8062 pass address of table to the AML. Added option to disable OpRegion
8064 to allow creation of an OpRegion with a real address that was passed to
8066 All of this allows testing of the Load and Unload operators from
8069 Debugger: update tables command for unloaded tables. Handle unloaded
8071 and use the standard table header output routine.
8073 ----------------------------------------
8074 09 June 2008. Summary of changes for version 20080609:
8076 1) ACPI CA Core Subsystem:
8078 Implemented a workaround for reversed _PRT entries. A significant number
8080 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8081 change dynamically detects and repairs this problem. Provides
8083 with MS ACPI. BZ 6859
8085 Simplified the internal ACPI hardware interfaces to eliminate the locking
8086 flag parameter from Register Read/Write. Added a new external interface,
8087 AcpiGetRegisterUnlocked.
8089 Fixed a problem where the invocation of a GPE control method could hang.
8091 was a regression introduced in 20080514. The new method argument count
8092 validation mechanism can enter an infinite loop when a GPE method is
8093 dispatched. Problem fixed by removing the obsolete code that passed GPE
8095 information to the notify handler via the control method parameter
8098 Fixed a problem where the _SST execution status was incorrectly returned
8100 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8102 20080514. _SST is optional and a NOT_FOUND exception should never be
8105 Fixed a problem where a deleted object could be accessed from within the
8107 parser. This was a regression introduced in version 20080123 as a fix for
8109 Unload operator. Lin Ming. BZ 10669
8111 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8113 and eliminated the use of a negative index in a loop. Operands are now
8114 displayed in the correct order, not backwards. This also fixes a
8116 introduced in 20080514 on 64-bit systems where the elimination of
8117 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8120 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8122 path did not delete a locally allocated structure.
8124 Updated definitions for the DMAR and SRAT tables to synchronize with the
8125 current specifications. Includes disassembler support.
8127 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8128 loop termination value was used. Loop terminated on iteration early,
8130 one mutex. Linn Crosetto
8132 Example Code and Data Size: These are the sizes for the OS-independent
8133 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8134 debug version of the code includes the debug output trace mechanism and
8136 much larger code and data size.
8139 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8140 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8142 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8143 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8145 2) iASL Compiler/Disassembler and Tools:
8147 Disassembler: Implemented support for EisaId() within _CID objects. Now
8148 disassemble integer _CID objects back to EisaId invocations, including
8149 multiple integers within _CID packages. Includes single-step support for
8152 Disassembler: Added support for DMAR and SRAT table definition changes.
8154 ----------------------------------------
8155 14 May 2008. Summary of changes for version 20080514:
8157 1) ACPI CA Core Subsystem:
8159 Fixed a problem where GPEs were enabled too early during the ACPICA
8160 initialization. This could lead to "handler not installed" errors on some
8161 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8163 ensures that all operation regions and devices throughout the namespace
8165 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8167 Implemented a change to the enter sleep code. Moved execution of the _GTS
8168 method to just before setting sleep enable bit. The execution was moved
8170 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8171 immediately before the SLP_EN bit is set, as per the ACPI specification.
8174 Implemented a fix to disable unknown GPEs (2nd version). Now always
8176 the GPE, even if ACPICA thinks that that it is already disabled. It is
8177 possible that the AML or some other code has enabled the GPE unbeknownst
8181 Fixed a problem with the Field operator where zero-length fields would
8183 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8185 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8187 Implemented a fix for the Load operator, now load the table at the
8189 root. This reverts a change introduced in version 20071019. The table is
8191 loaded at the namespace root even though this goes against the ACPI
8192 specification. This provides compatibility with other ACPI
8194 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8197 Fixed a problem where ACPICA would not Load() tables with unusual
8199 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8200 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8201 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8203 signatures, ACPICA must be compatible. BZ 10454.
8205 Fixed a possible negative array index in AcpiUtValidateException. Added
8207 fields to the exception string arrays to eliminate a -1 subtraction on
8211 Updated the debug tracking macros to reduce overall code and data size.
8212 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8213 instead of pointers to static strings. Jan Beulich and Bob Moore.
8215 Implemented argument count checking in control method invocation via
8216 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8218 many. This applies only to extern programmatic control method execution,
8220 method-to-method calls within the AML. Lin Ming.
8222 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8224 longer needed, especially with the removal of 16-bit support. It was
8226 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8229 32/64-bit platforms is required.
8231 Added the C const qualifier for appropriate string constants -- mostly
8232 MODULE_NAME and printf format strings. Jan Beulich.
8234 Example Code and Data Size: These are the sizes for the OS-independent
8235 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8236 debug version of the code includes the debug output trace mechanism and
8238 much larger code and data size.
8241 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8242 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8244 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8245 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8247 2) iASL Compiler/Disassembler and Tools:
8249 Implemented ACPI table revision ID validation in the disassembler. Zero
8251 always invalid. For DSDTs, the ID controls the interpreter integer width.
8253 means 32-bit and this is unusual. 2 or greater is 64-bit.
8255 ----------------------------------------
8256 21 March 2008. Summary of changes for version 20080321:
8258 1) ACPI CA Core Subsystem:
8260 Implemented an additional change to the GPE support in order to suppress
8261 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8263 disable incoming GPEs that are neither enabled nor disabled -- meaning
8265 the GPE is unknown to the system. This should prevent future interrupt
8267 from that GPE. BZ 6217 (Zhang Rui)
8269 Fixed a problem where NULL package elements were not returned to the
8270 AcpiEvaluateObject interface correctly. The element was simply ignored
8271 instead of returning a NULL ACPI_OBJECT package element, potentially
8273 a buffer overflow and/or confusing the caller who expected a fixed number
8275 elements. BZ 10132 (Lin Ming, Bob Moore)
8277 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8279 Qword), Field, BankField, and IndexField operators when invoked from
8281 an executing control method. In this case, these operators created
8283 nodes that were incorrectly left marked as permanent nodes instead of
8284 temporary nodes. This could cause a problem if there is race condition
8285 between an exiting control method and a running namespace walk. (Reported
8289 Fixed a problem where the CreateField and CreateXXXField operators would
8290 incorrectly allow duplicate names (the name of the field) with no
8294 Implemented several changes for Notify handling. Added support for new
8296 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8297 PowerResource objects is no longer allowed, as per the ACPI
8299 (Bob Moore, Zhang Rui)
8301 All Reference Objects returned via the AcpiEvaluateObject interface are
8303 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8305 NULL objects - either NULL package elements or unresolved named
8308 Fixed a problem where an extraneous debug message was produced for
8310 objects (when debugging enabled). The message "Package List length larger
8311 than NumElements count" is now produced in the correct case, and is now
8313 error message rather than a debug message. Added a debug message for the
8314 opposite case, where NumElements is larger than the Package List (the
8316 will be padded out with NULL elements as per the ACPI spec.)
8318 Implemented several improvements for the output of the ASL "Debug" object
8320 clarify and keep all data for a given object on one output line.
8322 Fixed two size calculation issues with the variable-length Start
8324 resource descriptor.
8326 Example Code and Data Size: These are the sizes for the OS-independent
8327 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8328 debug version of the code includes the debug output trace mechanism and
8330 a much larger code and data size.
8333 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8334 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8336 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8337 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8339 2) iASL Compiler/Disassembler and Tools:
8341 Fixed a problem with the use of the Switch operator where execution of
8343 containing method by multiple concurrent threads could cause an
8344 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8345 actual Switch opcode, it must be simulated with local named temporary
8346 variables and if/else pairs. The solution chosen was to mark any method
8348 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8351 ----------------------------------------
8352 13 February 2008. Summary of changes for version 20080213:
8354 1) ACPI CA Core Subsystem:
8356 Implemented another MS compatibility design change for GPE/Notify
8358 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8360 complete first. It is expected that the OSL will queue the enable request
8361 behind all pending notify requests (may require changes to the local host
8363 in AcpiOsExecute). Alexey Starikovskiy.
8365 Fixed a problem where buffer and package objects passed as arguments to a
8366 control method via the external AcpiEvaluateObject interface could cause
8368 AE_AML_INTERNAL exception depending on the order and type of operators
8369 executed by the target control method.
8371 Fixed a problem where resource descriptor size optimization could cause a
8372 problem when a _CRS resource template is passed to a _SRS method. The
8374 resource template must use the same descriptors (with the same size) as
8375 returned from _CRS. This change affects the following resource
8377 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8380 Fixed a problem where a CopyObject to RegionField, BankField, and
8382 objects did not perform an implicit conversion as it should. These types
8384 retain their initial type permanently as per the ACPI specification.
8386 a CopyObject to all other object types should not perform an implicit
8387 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8389 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8390 match device CIDs did not examine the entire list of available CIDs, but
8391 instead aborted on the first non-matching CID. Andrew Patterson.
8393 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8395 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8396 truncating the upper dword of a 64-bit value. This macro is only used to
8397 display debug output, so no incorrect calculations were made. Also,
8398 reimplemented the macro so that a 64-bit shift is not performed by
8399 inefficient compilers.
8401 Added missing va_end statements that should correspond with each va_start
8404 Example Code and Data Size: These are the sizes for the OS-independent
8405 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8406 debug version of the code includes the debug output trace mechanism and
8408 a much larger code and data size.
8411 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8412 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8414 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8415 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8417 2) iASL Compiler/Disassembler and Tools:
8419 Implemented full disassembler support for the following new ACPI tables:
8420 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8421 complicated HEST table. These tables support the Windows Hardware Error
8422 Architecture (WHEA).
8424 ----------------------------------------
8425 23 January 2008. Summary of changes for version 20080123:
8427 1) ACPI CA Core Subsystem:
8429 Added the 2008 copyright to all module headers and signons. This affects
8430 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8431 the tools/utilities.
8433 Fixed a problem with the SizeOf operator when used with Package and
8435 objects. These objects have deferred execution for some arguments, and
8437 execution is now completed before the SizeOf is executed. This problem
8439 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8443 Implemented an enhancement to the interpreter "slack mode". In the
8446 an explicit return or an implicitly returned object from the last
8448 opcode, a control method will now implicitly return an integer of value 0
8450 Microsoft compatibility. (Lin Ming) BZ 392
8452 Fixed a problem with the Load operator where an exception was not
8455 the case where the table is already loaded. (Lin Ming) BZ 463
8457 Implemented support for the use of DDBHandles as an Indexed Reference, as
8459 the ACPI spec. (Lin Ming) BZ 486
8461 Implemented support for UserTerm (Method invocation) for the Unload
8463 as per the ACPI spec. (Lin Ming) BZ 580
8465 Fixed a problem with the LoadTable operator where the OemId and
8467 input strings could cause unexpected failures if they were shorter than
8469 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8471 Implemented support for UserTerm (Method invocation) for the Unload
8473 as per the ACPI spec. (Lin Ming) BZ 580
8475 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8477 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8479 Example Code and Data Size: These are the sizes for the OS-independent
8480 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8481 debug version of the code includes the debug output trace mechanism and
8483 a much larger code and data size.
8486 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8487 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8489 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8490 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8492 2) iASL Compiler/Disassembler and Tools:
8494 Implemented support in the disassembler for checksum validation on
8496 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8498 header dump at the start of the disassembly.
8500 Implemented additional debugging information in the namespace listing
8502 created during compilation. In addition to the namespace hierarchy, the
8504 pathname to each namespace object is displayed.
8506 Fixed a problem with the disassembler where invalid ACPI tables could
8508 faults or infinite loops.
8510 Fixed an unexpected parse error when using the optional "parameter types"
8511 list in a control method declaration. (Lin Ming) BZ 397
8513 Fixed a problem where two External declarations with the same name did
8515 cause an error (Lin Ming) BZ 509
8517 Implemented support for full TermArgs (adding Argx, Localx and method
8518 invocation) for the ParameterData parameter to the LoadTable operator.
8522 ----------------------------------------
8523 19 December 2007. Summary of changes for version 20071219:
8525 1) ACPI CA Core Subsystem:
8527 Implemented full support for deferred execution for the TermArg string
8528 arguments for DataTableRegion. This enables forward references and full
8529 operand resolution for the three string arguments. Similar to
8531 deferred argument execution.) Lin Ming. BZ 430
8533 Implemented full argument resolution support for the BankValue argument
8535 BankField. Previously, only constants were supported, now any TermArg may
8537 used. Lin Ming BZ 387, 393
8539 Fixed a problem with AcpiGetDevices where the search of a branch of the
8540 device tree could be terminated prematurely. In accordance with the ACPI
8541 specification, the search down the current branch is terminated if a
8543 is both not present and not functional (instead of just not present.)
8547 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8549 the underlying AML code changed the GPE enable registers. Now, any
8551 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8553 instead of simply ignored. Rui Zhang.
8555 Fixed a problem with Index Fields where the Index register was
8557 limited to a maximum of 32 bits. Now any size may be used.
8559 Fixed a couple memory leaks associated with "implicit return" objects
8561 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8563 Example Code and Data Size: These are the sizes for the OS-independent
8564 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8565 debug version of the code includes the debug output trace mechanism and
8567 a much larger code and data size.
8570 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8571 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8573 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8574 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8576 ----------------------------------------
8577 14 November 2007. Summary of changes for version 20071114:
8579 1) ACPI CA Core Subsystem:
8581 Implemented event counters for each of the Fixed Events, the ACPI SCI
8582 (interrupt) itself, and control methods executed. Named
8583 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8585 should be useful for debugging and statistics.
8587 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8588 contents of the various event counters. Returns the current values for
8589 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8590 AcpiMethodCount. The interface can be expanded in the future if new
8592 are added. Device drivers should use this interface rather than access
8596 Fixed a problem with the FromBCD and ToBCD operators. With some
8598 the ShortDivide function worked incorrectly, causing problems with the
8600 functions with large input values. A truncation from 64-bit to 32-bit
8601 inadvertently occurred. Internal BZ 435. Lin Ming
8603 Fixed a problem with Index references passed as method arguments.
8605 passed as arguments to control methods were dereferenced immediately
8607 control was passed to the called method). The references are now
8609 passed directly to the called method. BZ 5389. Lin Ming
8611 Fixed a problem with CopyObject used in conjunction with the Index
8613 The reference was incorrectly dereferenced before the copy. The reference
8615 now correctly copied. BZ 5391. Lin Ming
8617 Fixed a problem with Control Method references within Package objects.
8619 references are now correctly generated. This completes the package
8620 construction overhaul that began in version 20071019.
8622 Example Code and Data Size: These are the sizes for the OS-independent
8623 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8624 debug version of the code includes the debug output trace mechanism and
8626 a much larger code and data size.
8629 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8630 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8632 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8633 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8636 2) iASL Compiler/Disassembler and Tools:
8638 The AcpiExec utility now installs handlers for all of the predefined
8639 Operation Region types. New types supported are: PCI_Config, CMOS, and
8642 Fixed a problem with the 64-bit version of AcpiExec where the extended
8644 bit) address fields for the DSDT and FACS within the FADT were not being
8645 used, causing truncation of the upper 32-bits of these addresses. Lin
8649 ----------------------------------------
8650 19 October 2007. Summary of changes for version 20071019:
8652 1) ACPI CA Core Subsystem:
8654 Fixed a problem with the Alias operator when the target of the alias is a
8655 named ASL operator that opens a new scope -- Scope, Device,
8657 Processor, and ThermalZone. In these cases, any children of the original
8658 operator could not be accessed via the alias, potentially causing
8660 AE_NOT_FOUND exceptions. (BZ 9067)
8662 Fixed a problem with the Package operator where all named references were
8663 created as object references and left otherwise unresolved. According to
8665 ACPI specification, a Package can only contain Data Objects or references
8667 control methods. The implication is that named references to Data Objects
8668 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8669 immediately upon package creation. This is the approach taken with this
8670 change. References to all other named objects (Methods, Devices, Scopes,
8671 etc.) are all now properly created as reference objects. (BZ 5328)
8673 Reverted a change to Notify handling that was introduced in version
8674 20070508. This version changed the Notify handling from asynchronous to
8675 fully synchronous (Device driver Notify handling with respect to the
8677 ASL operator). It was found that this change caused more problems than it
8678 solved and was removed by most users.
8680 Fixed a problem with the Increment and Decrement operators where the type
8682 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8685 Fixed a problem with the Load and LoadTable operators where the table
8686 location within the namespace was ignored. Instead, the table was always
8687 loaded into the root or current scope. Lin Ming.
8689 Fixed a problem with the Load operator when loading a table from a buffer
8690 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8692 Fixed a problem with the Debug object where a store of a DdbHandle
8694 object to the Debug object could cause a fault.
8696 Added a table checksum verification for the Load operator, in the case
8698 the load is from a buffer. (BZ 578).
8700 Implemented additional parameter validation for the LoadTable operator.
8702 length of the input strings SignatureString, OemIdString, and OemTableId
8704 now checked for maximum lengths. (BZ 582) Lin Ming.
8706 Example Code and Data Size: These are the sizes for the OS-independent
8707 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8708 debug version of the code includes the debug output trace mechanism and
8710 a much larger code and data size.
8713 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8714 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8716 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8717 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8720 2) iASL Compiler/Disassembler:
8722 Fixed a problem where if a single file was specified and the file did not
8723 exist, no error message was emitted. (Introduced with wildcard support in
8726 ----------------------------------------
8727 19 September 2007. Summary of changes for version 20070919:
8729 1) ACPI CA Core Subsystem:
8731 Designed and implemented new external interfaces to install and remove
8732 handlers for ACPI table-related events. Current events that are defined
8734 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8735 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8736 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8738 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8739 (acpi_serialized option on Linux) could cause some systems to hang during
8740 initialization. (Bob Moore) BZ 8171
8742 Fixed a problem where objects of certain types (Device, ThermalZone,
8743 Processor, PowerResource) can be not found if they are declared and
8744 referenced from within the same control method (Lin Ming) BZ 341
8746 Example Code and Data Size: These are the sizes for the OS-independent
8747 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8748 debug version of the code includes the debug output trace mechanism and
8750 a much larger code and data size.
8753 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8754 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8756 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8757 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8760 2) iASL Compiler/Disassembler:
8762 Implemented support to allow multiple files to be compiled/disassembled
8765 single invocation. This includes command line wildcard support for both
8767 Windows and Unix versions of the compiler. This feature simplifies the
8768 disassembly and compilation of multiple ACPI tables in a single
8771 ----------------------------------------
8772 08 May 2007. Summary of changes for version 20070508:
8774 1) ACPI CA Core Subsystem:
8776 Implemented a Microsoft compatibility design change for the handling of
8778 Notify AML operator. Previously, notify handlers were dispatched and
8779 executed completely asynchronously in a deferred thread. The new design
8780 still executes the notify handlers in a different thread, but the
8782 thread that executed the Notify() now waits at a synchronization point
8784 the notify handler to complete. Some machines depend on a synchronous
8786 operator in order to operate correctly.
8788 Implemented support to allow Package objects to be passed as method
8789 arguments to the external AcpiEvaluateObject interface. Previously, this
8790 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
8791 implemented since there were no reserved control methods that required it
8794 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
8796 contained invalid non-zero values in reserved fields could cause later
8797 failures because these fields have meaning in later revisions of the
8799 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
8801 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
8803 Fixed a problem where the Global Lock handle was not properly updated if
8805 thread that acquired the Global Lock via executing AML code then
8807 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
8811 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
8812 could be corrupted if the interrupt being removed was at the head of the
8813 list. Reported by Linn Crosetto.
8815 Example Code and Data Size: These are the sizes for the OS-independent
8816 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8817 debug version of the code includes the debug output trace mechanism and
8819 a much larger code and data size.
8822 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8823 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8825 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8826 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8828 ----------------------------------------
8829 20 March 2007. Summary of changes for version 20070320:
8831 1) ACPI CA Core Subsystem:
8833 Implemented a change to the order of interpretation and evaluation of AML
8834 operand objects within the AML interpreter. The interpreter now evaluates
8835 operands in the order that they appear in the AML stream (and the
8836 corresponding ASL code), instead of in the reverse order (after the
8838 operand list has been parsed). The previous behavior caused several
8840 incompatibilities with the Microsoft AML interpreter as well as being
8841 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
8843 Implemented a change to the ACPI Global Lock support. All interfaces to
8845 global lock now allow the same thread to acquire the lock multiple times.
8846 This affects the AcpiAcquireGlobalLock external interface to the global
8848 as well as the internal use of the global lock to support AML fields -- a
8849 control method that is holding the global lock can now simultaneously
8851 AML fields that require global lock protection. Previously, in both
8853 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
8855 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
8856 Controller. There is no change to the behavior of the AML Acquire
8858 as this can already be used to acquire a mutex multiple times by the same
8859 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8861 Fixed a problem where invalid objects could be referenced in the AML
8862 Interpreter after error conditions. During operand evaluation, ensure
8864 the internal "Return Object" field is cleared on error and only valid
8865 pointers are stored there. Caused occasional access to deleted objects
8867 resulted in "large reference count" warning messages. Valery Podrezov.
8869 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8871 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8874 Fixed an internal problem with the handling of result objects on the
8875 interpreter result stack. BZ 7872. Valery Podrezov.
8877 Removed obsolete code that handled the case where AML_NAME_OP is the
8879 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8880 7874. Valery Podrezov.
8882 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8885 remnant from the previously discontinued 16-bit support.
8887 Example Code and Data Size: These are the sizes for the OS-independent
8888 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8889 debug version of the code includes the debug output trace mechanism and
8891 a much larger code and data size.
8894 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8895 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8897 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8898 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8900 ----------------------------------------
8901 26 January 2007. Summary of changes for version 20070126:
8903 1) ACPI CA Core Subsystem:
8905 Added the 2007 copyright to all module headers and signons. This affects
8906 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8909 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8910 during a table load. A bad pointer was passed in the case where the DSDT
8912 overridden, causing a fault in this case.
8914 Example Code and Data Size: These are the sizes for the OS-independent
8915 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8916 debug version of the code includes the debug output trace mechanism and
8918 a much larger code and data size.
8921 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8922 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8924 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8925 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8927 ----------------------------------------
8928 15 December 2006. Summary of changes for version 20061215:
8930 1) ACPI CA Core Subsystem:
8932 Support for 16-bit ACPICA has been completely removed since it is no
8934 necessary and it clutters the code. All 16-bit macros, types, and
8935 conditional compiles have been removed, cleaning up and simplifying the
8937 across the entire subsystem. DOS support is no longer needed since the
8938 bootable Linux firmware kit is now available.
8940 The handler for the Global Lock is now removed during AcpiTerminate to
8941 enable a clean subsystem restart, via the implementation of the
8942 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8945 Implemented enhancements to the multithreading support within the
8947 to enable improved multithreading debugging and evaluation of the
8951 Debugger: Enhanced the Statistics/Memory command to emit the total
8953 memory used during the execution, as well as the maximum memory consumed
8955 each of the various object types. (Valery Podrezov)
8957 Example Code and Data Size: These are the sizes for the OS-independent
8958 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8959 debug version of the code includes the debug output trace mechanism and
8961 a much larger code and data size.
8964 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8965 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8967 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8968 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8971 2) iASL Compiler/Disassembler and Tools:
8973 AcpiExec: Implemented a new option (-m) to display full memory use
8974 statistics upon subsystem/program termination. (Valery Podrezov)
8976 ----------------------------------------
8977 09 November 2006. Summary of changes for version 20061109:
8979 1) ACPI CA Core Subsystem:
8981 Optimized the Load ASL operator in the case where the source operand is
8983 operation region. Simply map the operation region memory, instead of
8984 performing a bytewise read. (Region must be of type SystemMemory, see
8987 Fixed the Load ASL operator for the case where the source operand is a
8988 region field. A buffer object is also allowed as the source operand. BZ
8991 Fixed a problem where the Load ASL operator allowed the source operand to
8993 an operation region of any type. It is now restricted to regions of type
8994 SystemMemory, as per the ACPI specification. BZ 481
8996 Additional cleanup and optimizations for the new Table Manager code.
8998 AcpiEnable will now fail if all of the required ACPI tables are not
9000 (FADT, FACS, DSDT). BZ 477
9002 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9004 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9005 manually optimized to be aligned and will not work if it is byte-packed.
9007 Example Code and Data Size: These are the sizes for the OS-independent
9008 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9009 debug version of the code includes the debug output trace mechanism and
9011 a much larger code and data size.
9014 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9015 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9017 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9018 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9021 2) iASL Compiler/Disassembler and Tools:
9023 Fixed a problem where the presence of the _OSI predefined control method
9024 within complex expressions could cause an internal compiler error.
9026 AcpiExec: Implemented full region support for multiple address spaces.
9027 SpaceId is now part of the REGION object. BZ 429
9029 ----------------------------------------
9030 11 October 2006. Summary of changes for version 20061011:
9032 1) ACPI CA Core Subsystem:
9034 Completed an AML interpreter performance enhancement for control method
9035 execution. Previously a 2-pass parse/execution, control methods are now
9036 completely parsed and executed in a single pass. This improves overall
9037 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9038 use. (Valery Podrezov + interpreter changes in version 20051202 that
9039 eliminated namespace loading during the pass one parse.)
9041 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9043 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9045 obtained and also checked for an ID match.
9047 Implemented additional support for the PCI _ADR execution: upsearch until
9049 device scope is found before executing _ADR. This allows PCI_Config
9050 operation regions to be declared locally within control methods
9054 Fixed a problem with a possible race condition between threads executing
9055 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9056 modifying AcpiWalkNamespace to (by default) ignore all temporary
9058 entries created during any concurrent control method execution. An
9059 additional namespace race condition is known to exist between
9060 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9063 Restructured the AML ParseLoop function, breaking it into several
9064 subfunctions in order to reduce CPU stack use and improve
9068 AcpiGetHandle: Fix for parameter validation to detect invalid
9070 of prefix handle and pathname. BZ 478
9072 Example Code and Data Size: These are the sizes for the OS-independent
9073 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9074 debug version of the code includes the debug output trace mechanism and
9076 a much larger code and data size.
9079 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9080 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9082 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9083 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9085 2) iASL Compiler/Disassembler and Tools:
9087 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9089 to restore original behavior.
9091 ----------------------------------------
9092 27 September 2006. Summary of changes for version 20060927:
9094 1) ACPI CA Core Subsystem:
9096 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9097 These functions now use a spinlock for mutual exclusion and the interrupt
9098 level indication flag is not needed.
9100 Fixed a problem with the Global Lock where the lock could appear to be
9101 obtained before it is actually obtained. The global lock semaphore was
9102 inadvertently created with one unit instead of zero units. (BZ 464)
9106 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9108 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9110 Example Code and Data Size: These are the sizes for the OS-independent
9111 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9112 debug version of the code includes the debug output trace mechanism and
9114 a much larger code and data size.
9117 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9118 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9120 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9121 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9124 2) iASL Compiler/Disassembler and Tools:
9126 Fixed a compilation problem with the pre-defined Resource Descriptor
9128 names where an "object does not exist" error could be incorrectly
9130 if the parent ResourceTemplate pathname places the template within a
9131 different namespace scope than the current scope. (BZ 7212)
9133 Fixed a problem where the compiler could hang after syntax errors
9135 in an ElseIf construct. (BZ 453)
9137 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9138 operator. An incorrect output filename was produced when this parameter
9140 a null string (""). Now, the original input filename is used as the AML
9141 output filename, with an ".aml" extension.
9143 Implemented a generic batch command mode for the AcpiExec utility
9145 any AML debugger command) (Valery Podrezov).
9147 ----------------------------------------
9148 12 September 2006. Summary of changes for version 20060912:
9150 1) ACPI CA Core Subsystem:
9152 Enhanced the implementation of the "serialized mode" of the interpreter
9153 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9154 specified, instead of creating a serialization semaphore per control
9156 the interpreter lock is simply no longer released before a blocking
9157 operation during control method execution. This effectively makes the AML
9158 Interpreter single-threaded. The overhead of a semaphore per-method is
9161 Fixed a regression where an error was no longer emitted if a control
9163 attempts to create 2 objects of the same name. This once again returns
9164 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9166 will dynamically serialize the control method to possible prevent future
9169 Integrated a fix for a problem with PCI Express HID detection in the PCI
9170 Config Space setup procedure. (BZ 7145)
9172 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9173 AcpiHwInitialize function - the FADT registers are now validated when the
9176 Added two new warnings during FADT verification - 1) if the FADT is
9178 than the largest known FADT version, and 2) if there is a mismatch
9181 32-bit block address and the 64-bit X counterpart (when both are non-
9184 Example Code and Data Size: These are the sizes for the OS-independent
9185 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9186 debug version of the code includes the debug output trace mechanism and
9188 a much larger code and data size.
9191 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9192 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9194 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9195 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9198 2) iASL Compiler/Disassembler and Tools:
9200 Fixed a problem with the implementation of the Switch() operator where
9202 temporary variable was declared too close to the actual Switch, instead
9204 at method level. This could cause a problem if the Switch() operator is
9205 within a while loop, causing an error on the second iteration. (BZ 460)
9207 Disassembler - fix for error emitted for unknown type for target of scope
9208 operator. Now, ignore it and continue.
9210 Disassembly of an FADT now verifies the input FADT and reports any errors
9211 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9213 Disassembly of raw data buffers with byte initialization data now
9215 each output line with the current buffer offset.
9217 Disassembly of ASF! table now includes all variable-length data fields at
9218 the end of some of the subtables.
9220 The disassembler now emits a comment if a buffer appears to be a
9221 ResourceTemplate, but cannot be disassembled as such because the EndTag
9223 not appear at the very end of the buffer.
9225 AcpiExec - Added the "-t" command line option to enable the serialized
9227 of the AML interpreter.
9229 ----------------------------------------
9230 31 August 2006. Summary of changes for version 20060831:
9232 1) ACPI CA Core Subsystem:
9234 Miscellaneous fixes for the Table Manager:
9235 - Correctly initialize internal common FADT for all 64-bit "X" fields
9236 - Fixed a couple table mapping issues during table load
9237 - Fixed a couple alignment issues for IA64
9238 - Initialize input array to zero in AcpiInitializeTables
9239 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9242 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9244 immediately disabled to prevent the waking GPE from firing again and to
9245 prevent other wake GPEs from interrupting the wake process.
9247 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9249 be used for debugging systems with a large number of ACPI interrupts.
9251 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9252 both the ACPICA headers and the disassembler.
9254 Example Code and Data Size: These are the sizes for the OS-independent
9255 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9256 debug version of the code includes the debug output trace mechanism and
9258 a much larger code and data size.
9261 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9262 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9264 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9265 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9268 2) iASL Compiler/Disassembler and Tools:
9270 Disassembler support for the DMAR ACPI table.
9272 ----------------------------------------
9273 23 August 2006. Summary of changes for version 20060823:
9275 1) ACPI CA Core Subsystem:
9277 The Table Manager component has been completely redesigned and
9278 reimplemented. The new design is much simpler, and reduces the overall
9280 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9282 now possible to obtain the ACPI tables very early during kernel
9283 initialization, even before dynamic memory management is initialized.
9284 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9286 Obsolete ACPICA interfaces:
9288 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9291 - AcpiLoadTable: Not needed.
9292 - AcpiUnloadTable: Not needed.
9294 New ACPICA interfaces:
9296 - AcpiInitializeTables: Must be called before the table manager can be
9298 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9299 allocated memory after it becomes available.
9300 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9304 Other ACPICA changes:
9306 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9308 AcpiOsUnmapMemory to free this mapping.
9309 - AcpiGetTable returns the actual mapped table. The mapping is managed
9310 internally and must not be deleted by the caller. Use of this interface
9311 causes no additional dynamic memory allocation.
9312 - AcpiFindRootPointer: Support for physical addressing has been
9314 it appeared to be unused.
9315 - The interface to AcpiOsMapMemory has changed to be consistent with the
9316 other allocation interfaces.
9317 - The interface to AcpiOsGetRootPointer has changed to eliminate
9320 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9322 bit platforms. Was previously 64 bits on all platforms.
9323 - The interface to the ACPI Global Lock acquire/release macros have
9325 slightly since ACPICA no longer keeps a local copy of the FACS with a
9326 constructed pointer to the actual global lock.
9328 Porting to the new table manager:
9330 - AcpiInitializeTables: Must be called once, and can be called anytime
9331 during the OS initialization process. It allows the host to specify an
9333 of memory to be used to store the internal version of the RSDT/XSDT (root
9334 table). This allows the host to access ACPI tables before memory
9336 is initialized and running.
9337 - AcpiReallocateRootTable: Can be called after memory management is
9339 to copy the root table to a dynamically allocated array, freeing up the
9340 scratch memory specified in the call to AcpiInitializeTables.
9341 - AcpiSubsystemInitialize: This existing interface is independent of the
9342 Table Manager, and does not have to be called before the Table Manager
9344 be used, it only must be called before the rest of ACPICA can be used.
9345 - ACPI Tables: Some changes have been made to the names and structure of
9347 actbl.h and actbl1.h header files and may require changes to existing
9349 For example, bitfields have been completely removed because of their lack
9351 portability across C compilers.
9352 - Update interfaces to the Global Lock acquire/release macros if local
9353 versions are used. (see acwin.h)
9355 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9359 Example Code and Data Size: These are the sizes for the OS-independent
9360 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9361 debug version of the code includes the debug output trace mechanism and
9363 a much larger code and data size.
9366 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9367 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9369 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9370 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9373 2) iASL Compiler/Disassembler and Tools:
9375 No changes for this release.
9377 ----------------------------------------
9378 21 July 2006. Summary of changes for version 20060721:
9380 1) ACPI CA Core Subsystem:
9382 The full source code for the ASL test suite used to validate the iASL
9383 compiler and the ACPICA core subsystem is being released with the ACPICA
9384 source for the first time. The source is contained in a separate package
9386 consists of over 1100 files that exercise all ASL/AML operators. The
9388 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9392 Completed a new design and implementation for support of the ACPI Global
9393 Lock. On the OS side, the global lock is now treated as a standard AML
9394 mutex. Previously, multiple OS threads could "acquire" the global lock
9395 simultaneously. However, this could cause the BIOS to be starved out of
9397 lock - especially in cases such as the Embedded Controller driver where
9398 there is a tight coupling between the OS and the BIOS.
9400 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9401 The Global Lock interrupt handler no longer queues the execution of a
9402 separate thread to signal the global lock semaphore. Instead, the
9404 is signaled directly from the interrupt handler.
9406 Implemented support within the AML interpreter for package objects that
9407 contain a larger AML length (package list length) than the package
9409 count. In this case, the length of the package is truncated to match the
9410 package element count. Some BIOS code apparently modifies the package
9412 on the fly, and this change supports this behavior. Provides
9414 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9416 Implemented a temporary fix for the BankValue parameter of a Bank Field
9418 support all constant values, now including the Zero and One opcodes.
9419 Evaluation of this parameter must eventually be converted to a full
9421 evaluation. A not-implemented error is now returned (temporarily) for
9423 constant values for this parameter.
9425 Fixed problem reports (Fiodor Suietov) integrated:
9426 - Fix for premature object deletion after CopyObject on Operation Region
9430 Example Code and Data Size: These are the sizes for the OS-independent
9431 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9432 debug version of the code includes the debug output trace mechanism and
9434 a much larger code and data size.
9437 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9438 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9440 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9441 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9444 2) iASL Compiler/Disassembler and Tools:
9446 No changes for this release.
9448 ----------------------------------------
9449 07 July 2006. Summary of changes for version 20060707:
9451 1) ACPI CA Core Subsystem:
9453 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9454 that do not allow the initialization of address pointers within packed
9455 structures - even though the hardware itself may support misaligned
9456 transfers. Some of the debug data structures are packed by default to
9459 Added an error message for the case where AcpiOsGetThreadId() returns
9461 A non-zero value is required by the core ACPICA code to ensure the proper
9462 operation of AML mutexes and recursive control methods.
9464 The DSDT is now the only ACPI table that determines whether the AML
9465 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9467 the hooks for per-table 32/64 switching have been removed from the code.
9469 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9471 Fixed a possible leak of an OwnerID in the error path of
9472 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9473 deletion to a single place in AcpiTbUninstallTable to correct possible
9475 when using the AcpiTbDeleteTablesByType interface (with assistance from
9478 Fixed a problem with Serialized control methods where the semaphore
9479 associated with the method could be over-signaled after multiple method
9482 Fixed two issues with the locking of the internal namespace data
9484 Both the Unload() operator and AcpiUnloadTable interface now lock the
9485 namespace during the namespace deletion associated with the table unload
9486 (with assistance from Linn Crosetto.)
9488 Fixed problem reports (Valery Podrezov) integrated:
9489 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9491 Fixed problem reports (Fiodor Suietov) integrated:
9492 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9493 - On Address Space handler deletion, needless deactivation call (BZ 374)
9494 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9496 - Possible memory leak, Notify sub-objects of Processor, Power,
9499 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9500 - Minimum Length of RSDT should be validated (BZ 379)
9501 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9503 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9507 Example Code and Data Size: These are the sizes for the OS-independent
9508 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9509 debug version of the code includes the debug output trace mechanism and
9511 a much larger code and data size.
9514 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9515 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9517 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9518 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9521 2) iASL Compiler/Disassembler and Tools:
9523 Fixed problem reports:
9524 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9527 ----------------------------------------
9528 23 June 2006. Summary of changes for version 20060623:
9530 1) ACPI CA Core Subsystem:
9532 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9533 allows the type to be customized to the host OS for improved efficiency
9534 (since a spinlock is usually a very small object.)
9536 Implemented support for "ignored" bits in the ACPI registers. According
9538 the ACPI specification, these bits should be preserved when writing the
9539 registers via a read/modify/write cycle. There are 3 bits preserved in
9541 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9543 Implemented the initial deployment of new OSL mutex interfaces. Since
9545 host operating systems have separate mutex and semaphore objects, this
9546 feature was requested. The base code now uses mutexes (and the new mutex
9547 interfaces) wherever a binary semaphore was used previously. However, for
9548 the current release, the mutex interfaces are defined as macros to map
9550 to the existing semaphore interfaces. Therefore, no OSL changes are
9552 at this time. (See acpiosxf.h)
9554 Fixed several problems with the support for the control method SyncLevel
9555 parameter. The SyncLevel now works according to the ACPI specification
9557 in concert with the Mutex SyncLevel parameter, since the current
9559 is a property of the executing thread. Mutual exclusion for control
9561 is now implemented with a mutex instead of a semaphore.
9563 Fixed three instances of the use of the C shift operator in the bitfield
9564 support code (exfldio.c) to avoid the use of a shift value larger than
9566 target data width. The behavior of C compilers is undefined in this case
9568 can cause unpredictable results, and therefore the case must be detected
9570 avoided. (Fiodor Suietov)
9572 Added an info message whenever an SSDT or OEM table is loaded dynamically
9573 via the Load() or LoadTable() ASL operators. This should improve
9575 capability since it will show exactly what tables have been loaded
9577 the tables present in the RSDT/XSDT.)
9579 Example Code and Data Size: These are the sizes for the OS-independent
9580 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9581 debug version of the code includes the debug output trace mechanism and
9583 a much larger code and data size.
9586 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9587 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9589 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9590 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9593 2) iASL Compiler/Disassembler and Tools:
9595 No changes for this release.
9597 ----------------------------------------
9598 08 June 2006. Summary of changes for version 20060608:
9600 1) ACPI CA Core Subsystem:
9602 Converted the locking mutex used for the ACPI hardware to a spinlock.
9604 change should eliminate all problems caused by attempting to acquire a
9605 semaphore at interrupt level, and it means that all ACPICA external
9606 interfaces that directly access the ACPI hardware can be safely called
9608 interrupt level. OSL code that implements the semaphore interfaces should
9610 able to eliminate any workarounds for being called at interrupt level.
9612 Fixed a regression introduced in 20060526 where the ACPI device
9613 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9615 did not have an optional _INI method.
9617 Fixed an IndexField issue where a write to the Data Register should be
9618 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9622 Fixed problem reports (Valery Podrezov) integrated:
9623 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9625 Fixed problem reports (Fiodor Suietov) integrated:
9626 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9628 Removed four global mutexes that were obsolete and were no longer being
9631 Example Code and Data Size: These are the sizes for the OS-independent
9632 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9633 debug version of the code includes the debug output trace mechanism and
9635 a much larger code and data size.
9638 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9639 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9641 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9642 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9645 2) iASL Compiler/Disassembler and Tools:
9647 Fixed a fault when using -g option (get tables from registry) on Windows
9650 Fixed problem reports integrated:
9651 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9652 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9654 - Global table revision override (-r) is ignored (BZ 413)
9656 ----------------------------------------
9657 26 May 2006. Summary of changes for version 20060526:
9659 1) ACPI CA Core Subsystem:
9661 Restructured, flattened, and simplified the internal interfaces for
9662 namespace object evaluation - resulting in smaller code, less CPU stack
9664 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9666 Fixed a problem with the CopyObject operator where the first parameter
9668 not typed correctly for the parser, interpreter, compiler, and
9670 Caused various errors and unexpected behavior.
9672 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9673 produced incorrect results with some C compilers. Since the behavior of C
9674 compilers when the shift value is larger than the datatype width is
9675 apparently not well defined, the interpreter now detects this condition
9677 simply returns zero as expected in all such cases. (BZ 395)
9679 Fixed problem reports (Valery Podrezov) integrated:
9680 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9681 - Allow interpreter to handle nested method declarations (BZ 5361)
9683 Fixed problem reports (Fiodor Suietov) integrated:
9684 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9686 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9688 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9689 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9690 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9691 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9692 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9693 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9694 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9696 - Status of the Global Initialization Handler call not used (BZ 366)
9697 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9699 Example Code and Data Size: These are the sizes for the OS-independent
9700 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9701 debug version of the code includes the debug output trace mechanism and
9703 a much larger code and data size.
9706 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9707 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9709 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9710 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9713 2) iASL Compiler/Disassembler and Tools:
9715 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9716 namespace identifiers with no collision with existing resource descriptor
9717 macro names. This provides compatibility with other ASL compilers and is
9718 most useful for disassembly/recompilation of existing tables without
9720 errors. (With assistance from Thomas Renninger)
9722 Disassembler: fixed an incorrect disassembly problem with the
9723 DataTableRegion and CopyObject operators. Fixed a possible fault during
9724 disassembly of some Alias operators.
9726 ----------------------------------------
9727 12 May 2006. Summary of changes for version 20060512:
9729 1) ACPI CA Core Subsystem:
9731 Replaced the AcpiOsQueueForExecution interface with a new interface named
9732 AcpiOsExecute. The major difference is that the new interface does not
9734 a Priority parameter, this appeared to be useless and has been replaced
9737 Type parameter. The Type tells the host what type of execution is being
9738 requested, such as global lock handler, notify handler, GPE handler, etc.
9739 This allows the host to queue and execute the request as appropriate for
9741 request type, possibly using different work queues and different
9743 for the various request types. This enables fixes for multithreading
9744 deadlock problems such as BZ #5534, and will require changes to all
9746 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9748 Fixed a possible memory leak associated with the support for the so-
9750 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9753 Fixed a problem with the Load() operator where a table load from an
9754 operation region could overwrite an internal table buffer by up to 7
9756 and cause alignment faults on IPF systems. (With assistance from Luming
9759 Example Code and Data Size: These are the sizes for the OS-independent
9760 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9761 debug version of the code includes the debug output trace mechanism and
9763 a much larger code and data size.
9766 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9767 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9769 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9770 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9774 2) iASL Compiler/Disassembler and Tools:
9776 Disassembler: Implemented support to cross reference the internal
9778 and automatically generate ASL External() statements for symbols not
9780 within the current table being disassembled. This will simplify the
9781 disassembly and recompilation of interdependent tables such as SSDTs
9783 these statements will no longer have to be added manually.
9785 Disassembler: Implemented experimental support to automatically detect
9786 invocations of external control methods and generate appropriate
9788 statements. This is problematic because the AML cannot be correctly
9790 until the number of arguments for each control method is known.
9792 standalone method invocations and invocations as the source operand of a
9793 Store() statement are supported.
9795 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
9796 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
9797 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
9798 more readable and likely closer to the original ASL source.
9800 ----------------------------------------
9801 21 April 2006. Summary of changes for version 20060421:
9803 1) ACPI CA Core Subsystem:
9805 Removed a device initialization optimization introduced in 20051216 where
9806 the _STA method was not run unless an _INI was also present for the same
9807 device. This optimization could cause problems because it could allow
9809 methods to be run within a not-present device subtree. (If a not-present
9810 device had no _INI, _STA would not be run, the not-present status would
9812 be discovered, and the children of the device would be incorrectly
9815 Implemented a new _STA optimization where namespace subtrees that do not
9816 contain _INI are identified and ignored during device initialization.
9817 Selectively running _STA can significantly improve boot time on large
9818 machines (with assistance from Len Brown.)
9820 Implemented support for the device initialization case where the returned
9821 _STA flags indicate a device not-present but functioning. In this case,
9823 is not run, but the device children are examined for presence, as per the
9826 Implemented an additional change to the IndexField support in order to
9827 conform to MS behavior. The value written to the Index Register is not
9828 simply a byte offset, it is a byte offset in units of the access width of
9829 the parent Index Field. (Fiodor Suietov)
9831 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
9832 interface is called during the creation of all AML operation regions, and
9833 allows the host OS to exert control over what addresses it will allow the
9834 AML code to access. Operation Regions whose addresses are disallowed will
9835 cause a runtime exception when they are actually accessed (will not
9837 or abort table loading.) See oswinxf or osunixxf for an example
9840 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
9841 interface allows the host OS to match the various "optional"
9842 interface/behavior strings for the _OSI predefined control method as
9843 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
9844 for an example implementation.
9846 Restructured and corrected various problems in the exception handling
9848 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
9849 (with assistance from Takayoshi Kochi.)
9851 Modified the Linux source converter to ignore quoted string literals
9853 converting identifiers from mixed to lower case. This will correct
9855 with the disassembler and other areas where such strings must not be
9858 The ACPI_FUNCTION_* macros no longer require quotes around the function
9859 name. This allows the Linux source converter to convert the names, now
9861 the converter ignores quoted strings.
9863 Example Code and Data Size: These are the sizes for the OS-independent
9864 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9865 debug version of the code includes the debug output trace mechanism and
9867 a much larger code and data size.
9871 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9872 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9874 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9875 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9878 2) iASL Compiler/Disassembler and Tools:
9880 Implemented 3 new warnings for iASL, and implemented multiple warning
9884 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9886 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9887 check for the possible timeout, a warning is issued.
9889 2) Useless operators: If an ASL operator does not specify an optional
9891 operand and it also does not use the function return value from the
9892 operator, a warning is issued since the operator effectively does
9895 3) Unreferenced objects: If a namespace object is created, but never
9896 referenced, a warning is issued. This is a warning level 2 since there
9898 cases where this is ok, such as when a secondary table is loaded that
9900 the unreferenced objects. Even so, care is taken to only flag objects
9902 don't look like they will ever be used. For example, the reserved methods
9903 (starting with an underscore) are usually not referenced because it is
9904 expected that the OS will invoke them.
9906 ----------------------------------------
9907 31 March 2006. Summary of changes for version 20060331:
9909 1) ACPI CA Core Subsystem:
9911 Implemented header file support for the following additional ACPI tables:
9912 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9914 all current and known ACPI tables are now defined in the ACPICA headers
9916 are available for use by device drivers and other software.
9918 Implemented support to allow tables that contain ACPI names with invalid
9919 characters to be loaded. Previously, this would cause the table load to
9920 fail, but since there are several known cases of such tables on existing
9921 machines, this change was made to enable ACPI support for them. Also,
9923 matches the behavior of the Microsoft ACPI implementation.
9925 Fixed a couple regressions introduced during the memory optimization in
9927 20060317 release. The namespace node definition required additional
9928 reorganization and an internal datatype that had been changed to 8-bit
9930 restored to 32-bit. (Valery Podrezov)
9932 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9933 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9934 null pointers are now trapped and ignored, matching the behavior of the
9935 previous implementation before the deployment of AcpiOsReleaseObject.
9936 (Valery Podrezov, Fiodor Suietov)
9938 Fixed a memory mapping leak during the deletion of a SystemMemory
9940 region where a cached memory mapping was not deleted. This became a
9941 noticeable problem for operation regions that are defined within
9943 used control methods. (Dana Meyers)
9945 Reorganized the ACPI table header files into two main files: one for the
9946 ACPI tables consumed by the ACPICA core, and another for the
9948 ACPI tables that are consumed by the drivers and other software. The
9950 FADT definitions were merged into one common section and three different
9951 tables (ACPI 1.0, 1.0+, and 2.0)
9953 Example Code and Data Size: These are the sizes for the OS-independent
9954 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9955 debug version of the code includes the debug output trace mechanism and
9957 a much larger code and data size.
9960 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9961 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9963 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9964 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9967 2) iASL Compiler/Disassembler and Tools:
9969 Disassembler: Implemented support to decode and format all non-AML ACPI
9970 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9971 added to the ACPICA headers, therefore all current and known ACPI tables
9975 Disassembler: The change to allow ACPI names with invalid characters also
9976 enables the disassembly of such tables. Invalid characters within names
9978 changed to '*' to make the name printable; the iASL compiler will still
9979 generate an error for such names, however, since this is an invalid ACPI
9982 Implemented an option for AcpiXtract (-a) to extract all tables found in
9984 input file. The default invocation extracts only the DSDTs and SSDTs.
9986 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9987 makefile for the AcpiXtract utility.
9989 ----------------------------------------
9990 17 March 2006. Summary of changes for version 20060317:
9992 1) ACPI CA Core Subsystem:
9994 Implemented the use of a cache object for all internal namespace nodes.
9995 Since there are about 1000 static nodes in a typical system, this will
9996 decrease memory use for cache implementations that minimize per-
9998 overhead (such as a slab allocator.)
10000 Removed the reference count mechanism for internal namespace nodes, since
10002 was deemed unnecessary. This reduces the size of each namespace node by
10003 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10005 and 32 bytes for the 64-bit case.
10007 Optimized several internal data structures to reduce object size on 64-
10009 platforms by packing data within the 64-bit alignment. This includes the
10010 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10011 instances corresponding to the namespace objects.
10013 Added two new strings for the predefined _OSI method: "Windows 2001.1
10015 and "Windows 2006".
10017 Split the allocation tracking mechanism out to a separate file, from
10018 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10019 application-level code. Kernels may wish to not include uttrack.c in
10022 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10024 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10027 Code and Data Size: These are the sizes for the acpica.lib produced by
10029 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10031 driver or OSPM code. The debug version of the code includes the debug
10033 trace mechanism and has a much larger code and data size. Note that these
10034 values will vary depending on the efficiency of the compiler and the
10035 compiler options used during generation.
10038 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10039 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10041 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10042 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10045 2) iASL Compiler/Disassembler and Tools:
10047 Implemented an ANSI C version of the acpixtract utility. This version
10049 automatically extract the DSDT and all SSDTs from the input acpidump text
10050 file and dump the binary output to separate files. It can also display a
10051 summary of the input file including the headers for each table found and
10052 will extract any single ACPI table, with any signature. (See
10053 source/tools/acpixtract)
10055 ----------------------------------------
10056 10 March 2006. Summary of changes for version 20060310:
10058 1) ACPI CA Core Subsystem:
10060 Tagged all external interfaces to the subsystem with the new
10061 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10063 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10064 macro. The default definition is NULL.
10066 Added the ACPI_THREAD_ID type for the return value from
10068 This allows the host to define this as necessary to simplify kernel
10069 integration. The default definition is ACPI_NATIVE_UINT.
10071 Fixed two interpreter problems related to error processing, the deletion
10073 objects, and placing invalid pointers onto the internal operator result
10074 stack. BZ 6028, 6151 (Valery Podrezov)
10076 Increased the reference count threshold where a warning is emitted for
10078 reference counts in order to eliminate unnecessary warnings on systems
10080 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10083 Due to universal disagreement as to the meaning of the 'c' in the
10085 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10086 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10087 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10090 Code and Data Size: These are the sizes for the acpica.lib produced by
10092 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10094 driver or OSPM code. The debug version of the code includes the debug
10096 trace mechanism and has a much larger code and data size. Note that these
10097 values will vary depending on the efficiency of the compiler and the
10098 compiler options used during generation.
10101 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10102 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10104 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10105 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10108 2) iASL Compiler/Disassembler:
10110 Disassembler: implemented support for symbolic resource descriptor
10111 references. If a CreateXxxxField operator references a fixed offset
10114 resource descriptor, a name is assigned to the descriptor and the offset
10116 translated to the appropriate resource tag and pathname. The addition of
10117 this support brings the disassembled code very close to the original ASL
10118 source code and helps eliminate run-time errors when the disassembled
10120 is modified (and recompiled) in such a way as to invalidate the original
10123 Implemented support for a Descriptor Name as the last parameter to the
10125 Register() macro. This parameter was inadvertently left out of the ACPI
10126 specification, and will be added for ACPI 3.0b.
10128 Fixed a problem where the use of the "_OSI" string (versus the full path
10129 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10131 Fixed a problem with the error message that occurs when an invalid string
10133 used for a _HID object (such as one with an embedded asterisk:
10135 The correct message is now displayed.
10137 ----------------------------------------
10138 17 February 2006. Summary of changes for version 20060217:
10140 1) ACPI CA Core Subsystem:
10142 Implemented a change to the IndexField support to match the behavior of
10144 Microsoft AML interpreter. The value written to the Index register is now
10146 byte offset, no longer an index based upon the width of the Data
10148 This should fix IndexField problems seen on some machines where the Data
10149 register is not exactly one byte wide. The ACPI specification will be
10150 clarified on this point.
10152 Fixed a problem where several resource descriptor types could overrun the
10153 internal descriptor buffer due to size miscalculation: VendorShort,
10154 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10155 affect all platforms.
10157 Fixed a problem where individual resource descriptors were misaligned
10159 the internal buffer, causing alignment faults on IA64 platforms.
10161 Code and Data Size: These are the sizes for the acpica.lib produced by
10163 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10165 driver or OSPM code. The debug version of the code includes the debug
10167 trace mechanism and has a much larger code and data size. Note that these
10168 values will vary depending on the efficiency of the compiler and the
10169 compiler options used during generation.
10172 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10173 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10175 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10176 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10179 2) iASL Compiler/Disassembler:
10181 Implemented support for new reserved names: _WDG and _WED are Microsoft
10182 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10183 defined method (Throttling Depth Limit.)
10185 Fixed a problem where a zero-length VendorShort or VendorLong resource
10186 descriptor was incorrectly emitted as a descriptor of length one.
10188 ----------------------------------------
10189 10 February 2006. Summary of changes for version 20060210:
10191 1) ACPI CA Core Subsystem:
10193 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10194 normal execution. These became apparent after the conversion from
10197 Fixed a problem where the CreateField operator could hang if the BitIndex
10199 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10201 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10202 failed with an exception. This also fixes a couple of related RefOf and
10203 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10205 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10207 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10211 Implemented a memory cleanup at the end of the execution of each
10213 of an AML While() loop, preventing the accumulation of outstanding
10215 (Valery Podrezov, BZ 5427)
10217 Eliminated a chunk of duplicate code in the object resolution code.
10221 Fixed several warnings during the 64-bit code generation.
10223 The AcpiSrc source code conversion tool now inserts one line of
10225 after an if() statement that is followed immediately by a comment,
10227 readability of the Linux code.
10229 Code and Data Size: The current and previous library sizes for the core
10230 subsystem are shown below. These are the code and data sizes for the
10231 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10233 values do not include any ACPI driver or OSPM code. The debug version of
10235 code includes the debug output trace mechanism and has a much larger code
10236 and data size. Note that these values will vary depending on the
10238 of the compiler and the compiler options used during generation.
10241 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10242 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10244 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10245 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10248 2) iASL Compiler/Disassembler:
10250 Fixed a problem with the disassembly of a BankField operator with a
10252 expression for the BankValue parameter.
10254 ----------------------------------------
10255 27 January 2006. Summary of changes for version 20060127:
10257 1) ACPI CA Core Subsystem:
10259 Implemented support in the Resource Manager to allow unresolved
10261 references within resource package objects for the _PRT method. This
10263 is in addition to the previously implemented unresolved reference support
10264 within the AML parser. If the interpreter slack mode is enabled, these
10265 unresolved references will be passed through to the caller as a NULL
10269 Implemented and deployed new macros and functions for error and warning
10270 messages across the subsystem. These macros are simpler and generate less
10271 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10272 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10273 macros remain defined to allow ACPI drivers time to migrate to the new
10276 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10278 Acquire/Release Lock OSL interfaces.
10280 Fixed a problem where Alias ASL operators are sometimes not correctly
10281 resolved, in both the interpreter and the iASL compiler.
10283 Fixed several problems with the implementation of the
10284 ConcatenateResTemplate
10285 ASL operator. As per the ACPI specification, zero length buffers are now
10286 treated as a single EndTag. One-length buffers always cause a fatal
10287 exception. Non-zero length buffers that do not end with a full 2-byte
10289 cause a fatal exception.
10291 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10292 interface. (With assistance from Thomas Renninger)
10294 Code and Data Size: The current and previous library sizes for the core
10295 subsystem are shown below. These are the code and data sizes for the
10296 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10298 values do not include any ACPI driver or OSPM code. The debug version of
10300 code includes the debug output trace mechanism and has a much larger code
10301 and data size. Note that these values will vary depending on the
10303 of the compiler and the compiler options used during generation.
10306 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10307 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10309 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10310 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10313 2) iASL Compiler/Disassembler:
10315 Fixed an internal error that was generated for any forward references to
10319 ----------------------------------------
10320 13 January 2006. Summary of changes for version 20060113:
10322 1) ACPI CA Core Subsystem:
10324 Added 2006 copyright to all module headers and signons. This affects
10325 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10328 Enhanced the ACPICA error reporting in order to simplify user migration
10330 the non-debug version of ACPICA. Replaced all instances of the
10331 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10333 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10334 respectively. This preserves all error and warning messages in the non-
10336 version of the ACPICA code (this has been referred to as the "debug lite"
10337 option.) Over 200 cases were converted to create a total of over 380
10338 error/warning messages across the ACPICA code. This increases the code
10340 data size of the default non-debug version of the code somewhat (about
10342 but all error/warning reporting may be disabled if desired (and code
10343 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10344 configuration option. The size of the debug version of ACPICA remains
10348 Fixed a memory leak within the AML Debugger "Set" command. One object was
10349 not properly deleted for every successful invocation of the command.
10351 Code and Data Size: The current and previous library sizes for the core
10352 subsystem are shown below. These are the code and data sizes for the
10353 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10355 values do not include any ACPI driver or OSPM code. The debug version of
10357 code includes the debug output trace mechanism and has a much larger code
10358 and data size. Note that these values will vary depending on the
10360 of the compiler and the compiler options used during generation.
10363 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10364 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10366 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10367 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10370 2) iASL Compiler/Disassembler:
10372 The compiler now officially supports the ACPI 3.0a specification that was
10373 released on December 30, 2005. (Specification is available at
10376 ----------------------------------------
10377 16 December 2005. Summary of changes for version 20051216:
10379 1) ACPI CA Core Subsystem:
10381 Implemented optional support to allow unresolved names within ASL Package
10382 objects. A null object is inserted in the package when a named reference
10383 cannot be located in the current namespace. Enabled via the interpreter
10384 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10386 that contain such code.
10388 Implemented an optimization to the initialization sequence that can
10390 boot time. During ACPI device initialization, the _STA method is now run
10392 and only if the _INI method exists. The _STA method is used to determine
10394 the device is present; An _INI can only be run if _STA returns present,
10396 it is a waste of time to run the _STA method if the _INI does not exist.
10397 (Prototype and assistance from Dong Wei)
10399 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10401 available in the current compiler. Otherwise, the default (void *) cast
10405 Fixed some possible memory leaks found within the execution path of the
10406 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10408 Fixed a problem introduced in the 20051202 release where an exception is
10409 generated during method execution if a control method attempts to declare
10412 Moved resource descriptor string constants that are used by both the AML
10413 disassembler and AML debugger to the common utilities directory so that
10414 these components are independent.
10416 Implemented support in the AcpiExec utility (-e switch) to globally
10418 exceptions during control method execution (method is not aborted.)
10420 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10423 Code and Data Size: The current and previous library sizes for the core
10424 subsystem are shown below. These are the code and data sizes for the
10425 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10427 values do not include any ACPI driver or OSPM code. The debug version of
10429 code includes the debug output trace mechanism and has a much larger code
10430 and data size. Note that these values will vary depending on the
10432 of the compiler and the compiler options used during generation.
10435 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10436 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10438 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10439 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10442 2) iASL Compiler/Disassembler:
10444 Fixed a problem where a CPU stack overflow fault could occur if a
10446 method call was made from within a Return statement.
10448 ----------------------------------------
10449 02 December 2005. Summary of changes for version 20051202:
10451 1) ACPI CA Core Subsystem:
10453 Modified the parsing of control methods to no longer create namespace
10454 objects during the first pass of the parse. Objects are now created only
10455 during the execute phase, at the moment the namespace creation operator
10457 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10459 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10460 reentrant control methods are protected by an AML mutex. The mutex will
10462 correctly block multiple threads from attempting to create the same
10466 Increased the number of available Owner Ids for namespace object tracking
10467 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10469 some machines with a large number of ACPI tables (either static or
10472 Fixed a problem with the AcpiExec utility where a fault could occur when
10474 -b switch (batch mode) is used.
10476 Enhanced the namespace dump routine to output the owner ID for each
10479 Code and Data Size: The current and previous library sizes for the core
10480 subsystem are shown below. These are the code and data sizes for the
10481 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10483 values do not include any ACPI driver or OSPM code. The debug version of
10485 code includes the debug output trace mechanism and has a much larger code
10486 and data size. Note that these values will vary depending on the
10488 of the compiler and the compiler options used during generation.
10491 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10492 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10494 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10495 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10498 2) iASL Compiler/Disassembler:
10500 Fixed a parse error during compilation of certain Switch/Case constructs.
10502 simplify the parse, the grammar now allows for multiple Default
10504 and this error is now detected and flagged during the analysis phase.
10506 Disassembler: The disassembly now includes the contents of the original
10507 table header within a comment at the start of the file. This includes the
10508 name and version of the original ASL compiler.
10510 ----------------------------------------
10511 17 November 2005. Summary of changes for version 20051117:
10513 1) ACPI CA Core Subsystem:
10515 Fixed a problem in the AML parser where the method thread count could be
10516 decremented below zero if any errors occurred during the method parse
10518 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10520 This also fixed a related regression with the mechanism that detects and
10521 corrects methods that cannot properly handle reentrancy (related to the
10522 deployment of the new OwnerId mechanism.)
10524 Eliminated the pre-parsing of control methods (to detect errors) during
10525 table load. Related to the problem above, this was causing unwind issues
10527 any errors occurred during the parse, and it seemed to be overkill. A
10529 load should not be aborted if there are problems with any single control
10530 method, thus rendering this feature rather pointless.
10532 Fixed a problem with the new table-driven resource manager where an
10534 buffer overflow could occur for small resource templates.
10536 Implemented a new external interface, AcpiGetVendorResource. This
10538 will find and return a vendor-defined resource descriptor within a _CRS
10540 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10543 Removed the length limit (200) on string objects as per the upcoming ACPI
10544 3.0A specification. This affects the following areas of the interpreter:
10546 any implicit conversion of a Buffer to a String, 2) a String object
10548 of the ASL Concatentate operator, 3) the String object result of the ASL
10551 Fixed a problem in the Windows OS interface layer (OSL) where a
10553 on a semaphore object would incorrectly timeout. This allows the
10554 multithreading features of the AcpiExec utility to work properly under
10557 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10558 the recently added file named "utresrc.c".
10560 Code and Data Size: The current and previous library sizes for the core
10561 subsystem are shown below. These are the code and data sizes for the
10562 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10564 values do not include any ACPI driver or OSPM code. The debug version of
10566 code includes the debug output trace mechanism and has a much larger code
10567 and data size. Note that these values will vary depending on the
10569 of the compiler and the compiler options used during generation.
10572 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10573 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10575 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10576 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10579 2) iASL Compiler/Disassembler:
10581 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10582 specification. For the iASL compiler, this means that string literals
10584 the source ASL can be of any length.
10586 Enhanced the listing output to dump the AML code for resource descriptors
10587 immediately after the ASL code for each descriptor, instead of in a block
10589 the end of the entire resource template.
10591 Enhanced the compiler debug output to dump the entire original parse tree
10592 constructed during the parse phase, before any transforms are applied to
10594 tree. The transformed tree is dumped also.
10596 ----------------------------------------
10597 02 November 2005. Summary of changes for version 20051102:
10599 1) ACPI CA Core Subsystem:
10601 Modified the subsystem initialization sequence to improve GPE support.
10603 GPE initialization has been split into two parts in order to defer
10605 of the _PRW methods (Power Resources for Wake) until after the hardware
10607 fully initialized and the SCI handler is installed. This allows the _PRW
10608 methods to access fields protected by the Global Lock. This will fix
10610 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10612 Converted the ACPI internal object disassemble and display code within
10614 AML debugger to fully table-driven operation, reducing code size and
10615 increasing maintainability.
10617 Fixed a regression with the ConcatenateResTemplate() ASL operator
10619 in the 20051021 release.
10621 Implemented support for "local" internal ACPI object types within the
10622 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10623 These local types include RegionFields, BankFields, IndexFields, Alias,
10627 Moved common AML resource handling code into a new file, "utresrc.c".
10629 code is shared by both the Resource Manager and the AML Debugger.
10631 Code and Data Size: The current and previous library sizes for the core
10632 subsystem are shown below. These are the code and data sizes for the
10633 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10635 values do not include any ACPI driver or OSPM code. The debug version of
10637 code includes the debug output trace mechanism and has a much larger code
10638 and data size. Note that these values will vary depending on the
10640 of the compiler and the compiler options used during generation.
10643 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10644 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10646 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10647 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10650 2) iASL Compiler/Disassembler:
10652 Fixed a problem with very large initializer lists (more than 4000
10654 for both Buffer and Package objects where the parse stack could overflow.
10656 Enhanced the pre-compile source code scan for non-ASCII characters to
10658 characters within comment fields. The scan is now always performed and is
10660 longer optional, detecting invalid characters within a source file
10661 immediately rather than during the parse phase or later.
10663 Enhanced the ASL grammar definition to force early reductions on all
10665 style grammar elements so that the overall parse stack usage is greatly
10666 reduced. This should improve performance and reduce the possibility of
10670 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10672 with the addition of a %expected statement, the compiler generates from
10673 source with no warnings.
10675 Fixed a possible segment fault in the disassembler if the input filename
10676 does not contain a "dot" extension (Thomas Renninger).
10678 ----------------------------------------
10679 21 October 2005. Summary of changes for version 20051021:
10681 1) ACPI CA Core Subsystem:
10683 Implemented support for the EM64T and other x86-64 processors. This
10684 essentially entails recognizing that these processors support non-aligned
10685 memory transfers. Previously, all 64-bit processors were assumed to lack
10686 hardware support for non-aligned transfers.
10688 Completed conversion of the Resource Manager to nearly full table-driven
10689 operation. Specifically, the resource conversion code (convert AML to
10690 internal format and the reverse) and the debug code to dump internal
10691 resource descriptors are fully table-driven, reducing code and data size
10693 improving maintainability.
10695 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10697 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10699 Alexey Starikovskiy)
10701 Implemented support within the resource conversion code for the Type-
10702 Specific byte within the various ACPI 3.0 *WordSpace macros.
10704 Fixed some issues within the resource conversion code for the type-
10706 flags for both Memory and I/O address resource descriptors. For Memory,
10707 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10708 TTP flags into two separate fields.
10710 Code and Data Size: The current and previous library sizes for the core
10711 subsystem are shown below. These are the code and data sizes for the
10712 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10714 values do not include any ACPI driver or OSPM code. The debug version of
10716 code includes the debug output trace mechanism and has a much larger code
10717 and data size. Note that these values will vary depending on the
10719 of the compiler and the compiler options used during generation.
10722 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10723 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10725 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10726 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10730 2) iASL Compiler/Disassembler:
10732 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10734 corresponding ResourceSource string was not also present in a resource
10735 descriptor declaration. This restriction caused problems with existing
10736 AML/ASL code that includes the Index byte without the string. When such
10738 was disassembled, it could not be compiled without modification. Further,
10739 the modified code created a resource template with a different size than
10741 original, breaking code that used fixed offsets into the resource
10745 Removed a recent feature of the disassembler to ignore a lone
10747 byte. This byte is now emitted if present so that the exact AML can be
10748 reproduced when the disassembled code is recompiled.
10750 Improved comments and text alignment for the resource descriptor code
10751 emitted by the disassembler.
10753 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10755 Register() resource descriptor.
10757 ----------------------------------------
10758 30 September 2005. Summary of changes for version 20050930:
10760 1) ACPI CA Core Subsystem:
10762 Completed a major overhaul of the Resource Manager code - specifically,
10763 optimizations in the area of the AML/internal resource conversion code.
10765 code has been optimized to simplify and eliminate duplicated code, CPU
10767 use has been decreased by optimizing function parameters and local
10768 variables, and naming conventions across the manager have been
10770 for clarity and ease of maintenance (this includes function, parameter,
10771 variable, and struct/typedef names.) The update may force changes in some
10772 driver code, depending on how resources are handled by the host OS.
10774 All Resource Manager dispatch and information tables have been moved to a
10775 single location for clarity and ease of maintenance. One new file was
10776 created, named "rsinfo.c".
10778 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
10779 guarantee that the argument is not evaluated twice, making them less
10781 to macro side-effects. However, since there exists the possibility of
10782 additional stack use if a particular compiler cannot optimize them (such
10784 in the debug generation case), the original macros are optionally
10786 Note that some invocations of the return_VALUE macro may now cause size
10787 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
10789 eliminate these. (From Randy Dunlap)
10791 Implemented a new mechanism to enable debug tracing for individual
10793 methods. A new external interface, AcpiDebugTrace, is provided to enable
10794 this mechanism. The intent is to allow the host OS to easily enable and
10795 disable tracing for problematic control methods. This interface can be
10796 easily exposed to a user or debugger interface if desired. See the file
10797 psxface.c for details.
10799 AcpiUtCallocate will now return a valid pointer if a length of zero is
10800 specified - a length of one is used and a warning is issued. This matches
10801 the behavior of AcpiUtAllocate.
10803 Code and Data Size: The current and previous library sizes for the core
10804 subsystem are shown below. These are the code and data sizes for the
10805 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10807 values do not include any ACPI driver or OSPM code. The debug version of
10809 code includes the debug output trace mechanism and has a much larger code
10810 and data size. Note that these values will vary depending on the
10812 of the compiler and the compiler options used during generation.
10815 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10816 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10818 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10819 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10822 2) iASL Compiler/Disassembler:
10824 A remark is issued if the effective compile-time length of a package or
10825 buffer is zero. Previously, this was a warning.
10827 ----------------------------------------
10828 16 September 2005. Summary of changes for version 20050916:
10830 1) ACPI CA Core Subsystem:
10832 Fixed a problem within the Resource Manager where support for the Generic
10833 Register descriptor was not fully implemented. This descriptor is now
10835 recognized, parsed, disassembled, and displayed.
10837 Completely restructured the Resource Manager code to utilize table-driven
10838 dispatch and lookup, eliminating many of the large switch() statements.
10840 reduces overall subsystem code size and code complexity. Affects the
10841 resource parsing and construction, disassembly, and debug dump output.
10843 Cleaned up and restructured the debug dump output for all resource
10844 descriptors. Improved readability of the output and reduced code size.
10846 Fixed a problem where changes to internal data structures caused the
10847 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
10849 Code and Data Size: The current and previous library sizes for the core
10850 subsystem are shown below. These are the code and data sizes for the
10851 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10853 values do not include any ACPI driver or OSPM code. The debug version of
10855 code includes the debug output trace mechanism and has a much larger code
10856 and data size. Note that these values will vary depending on the
10858 of the compiler and the compiler options used during generation.
10861 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10862 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10864 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10865 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10868 2) iASL Compiler/Disassembler:
10870 Updated the disassembler to automatically insert an EndDependentFn()
10872 into the ASL stream if this macro is missing in the original AML code,
10873 simplifying compilation of the resulting ASL module.
10875 Fixed a problem in the disassembler where a disassembled ResourceSource
10876 string (within a large resource descriptor) was not surrounded by quotes
10878 not followed by a comma, causing errors when the resulting ASL module was
10879 compiled. Also, escape sequences within a ResourceSource string are now
10880 handled correctly (especially "\\")
10882 ----------------------------------------
10883 02 September 2005. Summary of changes for version 20050902:
10885 1) ACPI CA Core Subsystem:
10887 Fixed a problem with the internal Owner ID allocation and deallocation
10888 mechanisms for control method execution and recursive method invocation.
10889 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10890 messages seen on some systems. Recursive method invocation depth is
10891 currently limited to 255. (Alexey Starikovskiy)
10893 Completely eliminated all vestiges of support for the "module-level
10894 executable code" until this support is fully implemented and debugged.
10896 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10897 some systems that invoke this support.
10899 Fixed a problem within the resource manager code where the transaction
10901 for a 64-bit address descriptor were handled incorrectly in the type-
10902 specific flag byte.
10904 Consolidated duplicate code within the address descriptor resource
10906 code, reducing overall subsystem code size.
10908 Fixed a fault when using the AML debugger "disassemble" command to
10909 disassemble individual control methods.
10911 Removed references to the "release_current" directory within the Unix
10914 Code and Data Size: The current and previous core subsystem library sizes
10915 are shown below. These are the code and data sizes for the acpica.lib
10916 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10917 include any ACPI driver or OSPM code. The debug version of the code
10919 the debug output trace mechanism and has a much larger code and data
10921 Note that these values will vary depending on the efficiency of the
10923 and the compiler options used during generation.
10926 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10927 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10929 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10930 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10933 2) iASL Compiler/Disassembler:
10935 Implemented an error check for illegal duplicate values in the interrupt
10937 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10940 Implemented error checking for the Irq() and IrqNoFlags() macros to
10942 too many values in the interrupt list (16 max) and invalid values in the
10943 list (range 0 - 15)
10945 The maximum length string literal within an ASL file is now restricted to
10946 200 characters as per the ACPI specification.
10948 Fixed a fault when using the -ln option (generate namespace listing).
10950 Implemented an error check to determine if a DescriptorName within a
10951 resource descriptor has already been used within the current scope.
10953 ----------------------------------------
10954 15 August 2005. Summary of changes for version 20050815:
10956 1) ACPI CA Core Subsystem:
10958 Implemented a full bytewise compare to determine if a table load request
10960 attempting to load a duplicate table. The compare is performed if the
10962 signatures and table lengths match. This will allow different tables with
10963 the same OEM Table ID and revision to be loaded - probably against the
10965 specification, but discovered in the field nonetheless.
10967 Added the changes.txt logfile to each of the zipped release packages.
10969 Code and Data Size: Current and previous core subsystem library sizes are
10970 shown below. These are the code and data sizes for the acpica.lib
10972 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10973 any ACPI driver or OSPM code. The debug version of the code includes the
10974 debug output trace mechanism and has a much larger code and data size.
10976 that these values will vary depending on the efficiency of the compiler
10978 the compiler options used during generation.
10981 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10982 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10984 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10985 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10988 2) iASL Compiler/Disassembler:
10990 Fixed a problem where incorrect AML code could be generated for Package
10991 objects if optimization is disabled (via the -oa switch).
10993 Fixed a problem with where incorrect AML code is generated for variable-
10994 length packages when the package length is not specified and the number
10996 initializer values is greater than 255.
10999 ----------------------------------------
11000 29 July 2005. Summary of changes for version 20050729:
11002 1) ACPI CA Core Subsystem:
11004 Implemented support to ignore an attempt to install/load a particular
11006 table more than once. Apparently there exists BIOS code that repeatedly
11007 attempts to load the same SSDT upon certain events. With assistance from
11008 Venkatesh Pallipadi.
11010 Restructured the main interface to the AML parser in order to correctly
11011 handle all exceptional conditions. This will prevent leakage of the
11013 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11015 machines. With assistance from Alexey Starikovskiy.
11017 Support for "module level code" has been disabled in this version due to
11019 number of issues that have appeared on various machines. The support can
11021 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11022 compilation. When the issues are fully resolved, the code will be enabled
11026 Modified the internal functions for debug print support to define the
11027 FunctionName parameter as a (const char *) for compatibility with
11029 built-in macros such as __FUNCTION__, etc.
11031 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11033 Implemented support to display an object count summary for the AML
11035 commands Object and Methods.
11037 Code and Data Size: Current and previous core subsystem library sizes are
11038 shown below. These are the code and data sizes for the acpica.lib
11040 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11041 any ACPI driver or OSPM code. The debug version of the code includes the
11042 debug output trace mechanism and has a much larger code and data size.
11044 that these values will vary depending on the efficiency of the compiler
11046 the compiler options used during generation.
11049 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11050 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11052 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11053 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11056 2) iASL Compiler/Disassembler:
11058 Fixed a regression that appeared in the 20050708 version of the compiler
11059 where an error message was inadvertently emitted for invocations of the
11061 reserved control method.
11063 ----------------------------------------
11064 08 July 2005. Summary of changes for version 20050708:
11066 1) ACPI CA Core Subsystem:
11068 The use of the CPU stack in the debug version of the subsystem has been
11069 considerably reduced. Previously, a debug structure was declared in every
11070 function that used the debug macros. This structure has been removed in
11071 favor of declaring the individual elements as parameters to the debug
11072 functions. This reduces the cumulative stack use during nested execution
11074 ACPI function calls at the cost of a small increase in the code size of
11076 debug version of the subsystem. With assistance from Alexey Starikovskiy
11080 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11081 headers to define a macro that will return the current function name at
11082 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11084 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11085 compiler-dependent header, the function name is saved on the CPU stack
11087 pointer per function.) This mechanism is used because apparently there
11088 exists no standard ANSI-C defined macro that that returns the function
11091 Redesigned and reimplemented the "Owner ID" mechanism used to track
11092 namespace objects created/deleted by ACPI tables and control method
11093 execution. A bitmap is now used to allocate and free the IDs, thus
11095 the wraparound problem present in the previous implementation. The size
11097 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11100 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11102 flag definitions within the headers for the predefined ACPI tables. These
11103 have been replaced by UINT8_BIT in order to increase the code portability
11105 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11106 eliminate bitfields entirely because of a lack of portability.
11108 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11110 is a frequently used function and this improvement increases the
11112 of the entire subsystem (Alexey Starikovskiy).
11114 Fixed several possible memory leaks and the inverse - premature object
11115 deletion (Alexey Starikovskiy).
11117 Code and Data Size: Current and previous core subsystem library sizes are
11118 shown below. These are the code and data sizes for the acpica.lib
11120 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11121 any ACPI driver or OSPM code. The debug version of the code includes the
11122 debug output trace mechanism and has a much larger code and data size.
11124 that these values will vary depending on the efficiency of the compiler
11126 the compiler options used during generation.
11129 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11130 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11132 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11133 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11135 ----------------------------------------
11136 24 June 2005. Summary of changes for version 20050624:
11138 1) ACPI CA Core Subsystem:
11140 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11141 the host-defined cache object. This allows the OSL implementation to
11143 and type this object in any manner desired, simplifying the OSL
11144 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11145 Linux, and should be defined in the OS-specific header file for other
11146 operating systems as required.
11148 Changed the interface to AcpiOsAcquireObject to directly return the
11149 requested object as the function return (instead of ACPI_STATUS.) This
11150 change was made for performance reasons, since this is the purpose of the
11151 interface in the first place. AcpiOsAcquireObject is now similar to the
11152 AcpiOsAllocate interface.
11154 Implemented a new AML debugger command named Businfo. This command
11156 information about all devices that have an associate _PRT object. The
11158 _HID, _UID, and _CID are displayed for these devices.
11160 Modified the initialization sequence in AcpiInitializeSubsystem to call
11162 OSL interface AcpiOslInitialize first, before any local initialization.
11164 change was required because the global initialization now calls OSL
11167 Enhanced the Dump command to display the entire contents of Package
11169 (including all sub-objects and their values.)
11171 Restructured the code base to split some files because of size and/or
11172 because the code logically belonged in a separate file. New files are
11174 below. All makefiles and project files included in the ACPI CA release
11177 utilities/utcache.c /* Local cache interfaces */
11178 utilities/utmutex.c /* Local mutex support */
11179 utilities/utstate.c /* State object support */
11180 interpreter/parser/psloop.c /* Main AML parse loop */
11182 Code and Data Size: Current and previous core subsystem library sizes are
11183 shown below. These are the code and data sizes for the acpica.lib
11185 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11186 any ACPI driver or OSPM code. The debug version of the code includes the
11187 debug output trace mechanism and has a much larger code and data size.
11189 that these values will vary depending on the efficiency of the compiler
11191 the compiler options used during generation.
11194 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11195 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11197 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11198 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11201 2) iASL Compiler/Disassembler:
11203 Fixed a regression introduced in version 20050513 where the use of a
11205 object within a Case() statement caused a compile time exception. The
11206 original behavior has been restored (a Match() operator is emitted.)
11208 ----------------------------------------
11209 17 June 2005. Summary of changes for version 20050617:
11211 1) ACPI CA Core Subsystem:
11213 Moved the object cache operations into the OS interface layer (OSL) to
11215 the host OS to handle these operations if desired (for example, the Linux
11216 OSL will invoke the slab allocator). This support is optional; the
11218 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11220 code in the ACPI CA core. The new OSL interfaces are shown below. See
11221 utalloc.c for an example implementation, and acpiosxf.h for the exact
11222 interface definitions. With assistance from Alexey Starikovskiy.
11226 AcpiOsAcquireObject
11227 AcpiOsReleaseObject
11229 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11231 and restore a flags parameter. This fits better with many OS lock models.
11232 Note: the current execution state (interrupt handler or not) is no longer
11233 passed to these interfaces. If necessary, the OSL must determine this
11235 by itself, a simple and fast operation. With assistance from Alexey
11238 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11239 present if the revision of the RSDP was 2 or greater. According to the
11241 specification, the XSDT is optional in all cases, and the table manager
11242 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11243 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11247 Fixed an interpreter problem with the Mid() operator in the case of an
11249 string where the resulting output string is of zero length. It now
11251 returns a valid, null terminated string object instead of a string object
11252 with a null pointer.
11254 Fixed a problem with the control method argument handling to allow a
11256 to an Arg object that already contains an object of type Device. The
11258 object is now correctly overwritten. Previously, an error was returned.
11261 Enhanced the debugger Find command to emit object values in addition to
11263 found object pathnames. The output format is the same as the dump
11267 Enhanced the debugger Set command. It now has the ability to set the
11269 of any Named integer object in the namespace (Previously, only method
11271 and args could be set.)
11273 Code and Data Size: Current and previous core subsystem library sizes are
11274 shown below. These are the code and data sizes for the acpica.lib
11276 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11277 any ACPI driver or OSPM code. The debug version of the code includes the
11278 debug output trace mechanism and has a much larger code and data size.
11280 that these values will vary depending on the efficiency of the compiler
11282 the compiler options used during generation.
11285 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11286 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11288 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11289 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11292 2) iASL Compiler/Disassembler:
11294 Fixed a regression in the disassembler where if/else/while constructs
11296 output incorrectly. This problem was introduced in the previous release
11297 (20050526). This problem also affected the single-step disassembly in the
11300 Fixed a problem where compiling the reserved _OSI method would randomly
11302 rarely) produce compile errors.
11304 Enhanced the disassembler to emit compilable code in the face of
11306 AML resource descriptors. If the optional ResourceSourceIndex is present,
11307 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11308 disassembly. Otherwise, the resulting code cannot be compiled without
11311 ----------------------------------------
11312 26 May 2005. Summary of changes for version 20050526:
11314 1) ACPI CA Core Subsystem:
11316 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11317 the module level (not within a control method.) These opcodes are
11319 exactly once at the time the table is loaded. This type of code was legal
11321 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11323 order to provide backwards compatibility with earlier BIOS
11325 This eliminates the "Encountered executable code at module level" warning
11326 that was previously generated upon detection of such code.
11328 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11329 inadvertently be generated during the lookup of namespace objects in the
11330 second pass parse of ACPI tables and control methods. It appears that
11332 problem could occur during the resolution of forward references to
11336 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11337 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11338 allows the deadlock detection debug code to be compiled out in the normal
11339 case, improving mutex performance (and overall subsystem performance)
11342 Implemented a handful of miscellaneous fixes for possible memory leaks on
11343 error conditions and error handling control paths. These fixes were
11344 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11346 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11348 to prevent a fault in this error case.
11350 Code and Data Size: Current and previous core subsystem library sizes are
11351 shown below. These are the code and data sizes for the acpica.lib
11353 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11354 any ACPI driver or OSPM code. The debug version of the code includes the
11355 debug output trace mechanism and has a much larger code and data size.
11357 that these values will vary depending on the efficiency of the compiler
11359 the compiler options used during generation.
11362 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11363 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11365 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11366 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11369 2) iASL Compiler/Disassembler:
11371 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11372 the module level (not within a control method.) These operators will be
11373 executed once at the time the table is loaded. This type of code was
11375 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11376 compiler in order to provide backwards compatibility with earlier BIOS
11380 The ACPI integer width (specified via the table revision ID or the -r
11381 override, 32 or 64 bits) is now used internally during compile-time
11383 folding to ensure that constants are truncated to 32 bits if necessary.
11384 Previously, the revision ID value was only emitted in the AML table
11387 An error message is now generated for the Mutex and Method operators if
11389 SyncLevel parameter is outside the legal range of 0 through 15.
11391 Fixed a problem with the Method operator ParameterTypes list handling
11393 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11395 The actual underlying implementation of method argument typechecking is
11396 still under development, however.
11398 ----------------------------------------
11399 13 May 2005. Summary of changes for version 20050513:
11401 1) ACPI CA Core Subsystem:
11403 Implemented support for PCI Express root bridges -- added support for
11405 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11407 The interpreter now automatically truncates incoming 64-bit constants to
11409 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11411 also affects the iASL compiler constant folding. (Note: as per below, the
11412 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11414 Fixed a problem where string and buffer objects with "static" pointers
11415 (pointers to initialization data within an ACPI table) were not handled
11416 consistently. The internal object copy operation now always copies the
11418 to a newly allocated buffer, regardless of whether the source object is
11421 Fixed a problem with the FromBCD operator where an implicit result
11422 conversion was improperly performed while storing the result to the
11424 operand. Since this is an "explicit conversion" operator, the implicit
11425 conversion should never be performed on the output.
11427 Fixed a problem with the CopyObject operator where a copy to an existing
11428 named object did not always completely overwrite the existing object
11430 at name. Specifically, a buffer-to-buffer copy did not delete the
11434 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11436 structs for consistency.
11438 Code and Data Size: Current and previous core subsystem library sizes are
11439 shown below. These are the code and data sizes for the acpica.lib
11441 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11442 any ACPI driver or OSPM code. The debug version of the code includes the
11443 debug output trace mechanism and has a much larger code and data size.
11445 that these values will vary depending on the efficiency of the compiler
11447 the compiler options used during generation.
11450 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11451 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11452 Current Release: (Same sizes)
11453 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11454 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11457 2) iASL Compiler/Disassembler:
11459 The compiler now emits a warning if an attempt is made to generate a 64-
11461 integer constant from within a 32-bit ACPI table (Revision < 2). The
11463 is truncated to 32 bits.
11465 Fixed a problem with large package objects: if the static length of the
11466 package is greater than 255, the "variable length package" opcode is
11467 emitted. Previously, this caused an error. This requires an update to the
11468 ACPI spec, since it currently (incorrectly) states that packages larger
11470 255 elements are not allowed.
11472 The disassembler now correctly handles variable length packages and
11474 larger than 255 elements.
11476 ----------------------------------------
11477 08 April 2005. Summary of changes for version 20050408:
11479 1) ACPI CA Core Subsystem:
11481 Fixed three cases in the interpreter where an "index" argument to an ASL
11482 function was still (internally) 32 bits instead of the required 64 bits.
11483 This was the Index argument to the Index, Mid, and Match operators.
11485 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11487 not a POSIX-defined function and not present in most kernel-level C
11488 libraries. All references to the C library strupr function have been
11492 Completed the deployment of static functions/prototypes. All prototypes
11494 the static attribute have been moved from the headers to the owning C
11497 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11498 utility). This option allows the utility to extract individual ACPI
11500 from the output of AcpiDmp. It provides the same functionality of the
11501 acpixtract.pl perl script without the worry of setting the correct perl
11502 options. AcpiBin runs on Windows and has not yet been generated/validated
11504 the Linux/Unix environment (but should be soon).
11506 Updated and fixed the table dump option for AcpiBin (-d). This option
11507 converts a single ACPI table to a hex/ascii file, similar to the output
11511 Code and Data Size: Current and previous core subsystem library sizes are
11512 shown below. These are the code and data sizes for the acpica.lib
11514 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11515 any ACPI driver or OSPM code. The debug version of the code includes the
11516 debug output trace mechanism and has a much larger code and data size.
11518 that these values will vary depending on the efficiency of the compiler
11520 the compiler options used during generation.
11523 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11524 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11526 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11527 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11530 2) iASL Compiler/Disassembler:
11532 Disassembler fix: Added a check to ensure that the table length found in
11534 ACPI table header within the input file is not longer than the actual
11536 file size. This indicates some kind of file or table corruption.
11538 ----------------------------------------
11539 29 March 2005. Summary of changes for version 20050329:
11541 1) ACPI CA Core Subsystem:
11543 An error is now generated if an attempt is made to create a Buffer Field
11545 length zero (A CreateField with a length operand of zero.)
11547 The interpreter now issues a warning whenever executable code at the
11549 level is detected during ACPI table load. This will give some idea of the
11550 prevalence of this type of code.
11552 Implemented support for references to named objects (other than control
11553 methods) within package objects.
11555 Enhanced package object output for the debug object. Package objects are
11557 completely dumped, showing all elements.
11559 Enhanced miscellaneous object output for the debug object. Any object can
11560 now be written to the debug object (for example, a device object can be
11561 written, and the type of the object will be displayed.)
11563 The "static" qualifier has been added to all local functions across both
11565 core subsystem and the iASL compiler.
11567 The number of "long" lines (> 80 chars) within the source has been
11568 significantly reduced, by about 1/3.
11570 Cleaned up all header files to ensure that all CA/iASL functions are
11571 prototyped (even static functions) and the formatting is consistent.
11573 Two new header files have been added, acopcode.h and acnames.h.
11575 Removed several obsolete functions that were no longer used.
11577 Code and Data Size: Current and previous core subsystem library sizes are
11578 shown below. These are the code and data sizes for the acpica.lib
11580 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11581 any ACPI driver or OSPM code. The debug version of the code includes the
11582 debug output trace mechanism and has a much larger code and data size.
11584 that these values will vary depending on the efficiency of the compiler
11586 the compiler options used during generation.
11589 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11590 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11592 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11593 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11597 2) iASL Compiler/Disassembler:
11599 Fixed a problem with the resource descriptor generation/support. For the
11600 ResourceSourceIndex and the ResourceSource fields, both must be present,
11602 both must be not present - can't have one without the other.
11604 The compiler now returns non-zero from the main procedure if any errors
11606 occurred during the compilation.
11609 ----------------------------------------
11610 09 March 2005. Summary of changes for version 20050309:
11612 1) ACPI CA Core Subsystem:
11614 The string-to-buffer implicit conversion code has been modified again
11616 a change to the ACPI specification. In order to match the behavior of
11618 other major ACPI implementation, the target buffer is no longer truncated
11620 the source string is smaller than an existing target buffer. This change
11621 requires an update to the ACPI spec, and should eliminate the recent
11622 AE_AML_BUFFER_LIMIT issues.
11624 The "implicit return" support was rewritten to a new algorithm that
11626 the general case. Rather than attempt to determine when a method is about
11628 exit, the result of every ASL operator is saved momentarily until the
11630 next ASL operator is executed. Therefore, no matter how the method exits,
11631 there will always be a saved implicit return value. This feature is only
11632 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11634 AE_AML_NO_RETURN_VALUE errors when enabled.
11636 Implemented implicit conversion support for the predicate (operand) of
11638 If, Else, and While operators. String and Buffer arguments are
11640 converted to Integers.
11642 Changed the string-to-integer conversion behavior to match the new ACPI
11643 errata: "If no integer object exists, a new integer is created. The ASCII
11644 string is interpreted as a hexadecimal constant. Each string character is
11645 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11646 with the first character as the most significant digit, and ending with
11648 first non-hexadecimal character or end-of-string." This means that the
11650 non-hex character terminates the conversion and this is the code that was
11653 Fixed a problem where the ObjectType operator would fail (fault) when
11655 on an Index of a Package which pointed to a null package element. The
11656 operator now properly returns zero (Uninitialized) in this case.
11658 Fixed a problem where the While operator used excessive memory by not
11659 properly popping the result stack during execution. There was no memory
11661 after execution, however. (Code provided by Valery Podrezov.)
11663 Fixed a problem where references to control methods within Package
11665 caused the method to be invoked, instead of producing a reference object
11666 pointing to the method.
11668 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11670 improve performance and reduce code size. (Code provided by Alexey
11673 Code and Data Size: Current and previous core subsystem library sizes are
11674 shown below. These are the code and data sizes for the acpica.lib
11676 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11677 any ACPI driver or OSPM code. The debug version of the code includes the
11678 debug output trace mechanism and has a much larger code and data size.
11680 that these values will vary depending on the efficiency of the compiler
11682 the compiler options used during generation.
11685 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11686 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11688 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11689 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11692 2) iASL Compiler/Disassembler:
11694 Fixed a problem with the Return operator with no arguments. Since the AML
11695 grammar for the byte encoding requires an operand for the Return opcode,
11697 compiler now emits a Return(Zero) for this case. An ACPI specification
11698 update has been written for this case.
11700 For tables other than the DSDT, namepath optimization is automatically
11701 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11703 compiler has no knowledge of where, and thus cannot optimize namepaths.
11705 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11706 inadvertently omitted from the ACPI specification, and will require an
11707 update to the spec.
11709 The source file scan for ASCII characters is now optional (-a). This
11711 was made because some vendors place non-ascii characters within comments.
11712 However, the scan is simply a brute-force byte compare to ensure all
11713 characters in the file are in the range 0x00 to 0x7F.
11715 Fixed a problem with the CondRefOf operator where the compiler was
11716 inappropriately checking for the existence of the target. Since the point
11718 the operator is to check for the existence of the target at run-time, the
11719 compiler no longer checks for the target existence.
11721 Fixed a problem where errors generated from the internal AML interpreter
11722 during constant folding were not handled properly, causing a fault.
11724 Fixed a problem with overly aggressive range checking for the Stall
11725 operator. The valid range (max 255) is now only checked if the operand is
11727 type Integer. All other operand types cannot be statically checked.
11729 Fixed a problem where control method references within the RefOf,
11731 and ObjectType operators were not treated properly. They are now treated
11733 actual references, not method invocations.
11735 Fixed and enhanced the "list namespace" option (-ln). This option was
11737 a number of releases ago.
11739 Improved error handling for the Field, IndexField, and BankField
11741 The compiler now cleanly reports and recovers from errors in the field
11742 component (FieldUnit) list.
11744 Fixed a disassembler problem where the optional ResourceDescriptor fields
11745 TRS and TTP were not always handled correctly.
11747 Disassembler - Comments in output now use "//" instead of "/*"
11749 ----------------------------------------
11750 28 February 2005. Summary of changes for version 20050228:
11752 1) ACPI CA Core Subsystem:
11754 Fixed a problem where the result of an Index() operator (an object
11755 reference) must increment the reference count on the target object for
11757 life of the object reference.
11759 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
11760 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
11762 resource descriptors.
11764 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
11765 Space Descriptor" string, indicating interpreter support for the
11769 Implemented header support for the new ACPI 3.0 FADT flag bits.
11771 Implemented header support for the new ACPI 3.0 PCI Express bits for the
11773 status/enable registers.
11775 Updated header support for the MADT processor local Apic struct and MADT
11776 platform interrupt source struct for new ACPI 3.0 fields.
11778 Implemented header support for the SRAT and SLIT ACPI tables.
11780 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
11784 Code and Data Size: Current and previous core subsystem library sizes are
11785 shown below. These are the code and data sizes for the acpica.lib
11787 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11788 any ACPI driver or OSPM code. The debug version of the code includes the
11789 debug output trace mechanism and has a much larger code and data size.
11791 that these values will vary depending on the efficiency of the compiler
11793 the compiler options used during generation.
11796 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11797 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11799 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11800 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11803 2) iASL Compiler/Disassembler:
11805 Fixed a problem with the internal 64-bit String-to-integer conversion
11807 strings less than two characters long.
11809 Fixed a problem with constant folding where the result of the Index()
11810 operator can not be considered a constant. This means that Index() cannot
11812 a type3 opcode and this will require an update to the ACPI specification.
11814 Disassembler: Implemented support for the TTP, MTP, and TRS resource
11815 descriptor fields. These fields were inadvertently ignored and not output
11817 the disassembly of the resource descriptor.
11820 ----------------------------------------
11821 11 February 2005. Summary of changes for version 20050211:
11823 1) ACPI CA Core Subsystem:
11825 Implemented ACPI 3.0 support for implicit conversion within the Match()
11826 operator. MatchObjects can now be of type integer, buffer, or string
11828 of just type integer. Package elements are implicitly converted to the
11830 of the MatchObject. This change aligns the behavior of Match() with the
11831 behavior of the other logical operators (LLess(), etc.) It also requires
11833 errata change to the ACPI specification as this support was intended for
11834 ACPI 3.0, but was inadvertently omitted.
11836 Fixed a problem with the internal implicit "to buffer" conversion.
11838 that are converted to buffers will cause buffer truncation if the string
11840 smaller than the target buffer. Integers that are converted to buffers
11842 not cause buffer truncation, only zero extension (both as per the ACPI
11843 spec.) The problem was introduced when code was added to truncate the
11844 buffer, but this should not be performed in all cases, only the string
11847 Fixed a problem with the Buffer and Package operators where the
11849 would get confused if two such operators were used as operands to an ASL
11850 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
11851 stack was not being popped after the execution of these operators,
11853 in an AE_NO_RETURN_VALUE exception.
11855 Fixed a problem with constructs of the form Store(Index(...),...). The
11856 reference object returned from Index was inadvertently resolved to an
11858 value. This problem was introduced in version 20050114 when the behavior
11860 Store() was modified to restrict the object types that can be used as the
11861 source operand (to match the ACPI specification.)
11863 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11865 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11867 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11869 Code and Data Size: Current and previous core subsystem library sizes are
11870 shown below. These are the code and data sizes for the acpica.lib
11872 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11873 any ACPI driver or OSPM code. The debug version of the code includes the
11874 debug output trace mechanism and has a much larger code and data size.
11876 that these values will vary depending on the efficiency of the compiler
11878 the compiler options used during generation.
11881 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11882 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11884 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11885 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11888 2) iASL Compiler/Disassembler:
11890 Fixed a code generation problem in the constant folding optimization code
11891 where incorrect code was generated if a constant was reduced to a buffer
11892 object (i.e., a reduced type 5 opcode.)
11894 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11895 incorrect return type in the internal opcode information table.
11897 ----------------------------------------
11898 25 January 2005. Summary of changes for version 20050125:
11900 1) ACPI CA Core Subsystem:
11902 Fixed a recently introduced problem with the Global Lock where the
11903 underlying semaphore was not created. This problem was introduced in
11904 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11905 Acquire() operation on _GL.
11907 The local object cache is now optional, and is disabled by default. Both
11908 AcpiExec and the iASL compiler enable the cache because they run in user
11909 mode and this enhances their performance. #define
11910 ACPI_ENABLE_OBJECT_CACHE
11911 to enable the local cache.
11913 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11915 optional "implicit return" support where an error was returned if no
11917 object was expected, but one was implicitly returned. AE_OK is now
11919 in this case and the implicitly returned object is deleted.
11920 AcpiUtEvaluateObject is only occasionally used, and only to execute
11922 methods such as _STA and _INI where the return type is known up front.
11924 Fixed a few issues with the internal convert-to-integer code. It now
11926 an error if an attempt is made to convert a null string, a string of only
11927 blanks/tabs, or a zero-length buffer. This affects both implicit
11929 and explicit conversion via the ToInteger() operator.
11931 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11933 not needed for normal operation and should increase the performance of
11935 entire subsystem. The code remains in case it is needed for debug
11939 The AcpiExec source and makefile are included in the Unix/Linux package
11943 Code and Data Size: Current and previous core subsystem library sizes are
11944 shown below. These are the code and data sizes for the acpica.lib
11946 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11947 any ACPI driver or OSPM code. The debug version of the code includes the
11948 debug output trace mechanism and has a much larger code and data size.
11950 that these values will vary depending on the efficiency of the compiler
11952 the compiler options used during generation.
11955 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11956 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11958 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11959 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11961 2) iASL Compiler/Disassembler:
11963 Switch/Case support: A warning is now issued if the type of the Switch
11965 cannot be determined at compile time. For example, Switch(Arg0) will
11966 generate the warning, and the type is assumed to be an integer. As per
11968 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11972 Switch/Case support: Implemented support for buffer and string objects as
11973 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11974 buffers and strings.
11976 Switch/Case support: The emitted code for the LEqual() comparisons now
11978 the switch value as the first operand, not the second. The case value is
11980 the second operand, and this allows the case value to be implicitly
11981 converted to the type of the switch value, not the other way around.
11983 Switch/Case support: Temporary variables are now emitted immediately
11985 the control method, not at the global level. This means that there are
11987 36 temps available per-method, not 36 temps per-module as was the case
11989 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11991 ----------------------------------------
11992 14 January 2005. Summary of changes for version 20050114:
11994 Added 2005 copyright to all module headers. This affects every module in
11995 the core subsystem, iASL compiler, and the utilities.
11997 1) ACPI CA Core Subsystem:
11999 Fixed an issue with the String-to-Buffer conversion code where the string
12000 null terminator was not included in the buffer after conversion, but
12002 is existing ASL that assumes the string null terminator is included. This
12004 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12005 introduced in the previous version when the code was updated to correctly
12006 set the converted buffer size as per the ACPI specification. The ACPI
12008 is ambiguous and will be updated to specify that the null terminator must
12010 included in the converted buffer. This also affects the ToBuffer() ASL
12013 Fixed a problem with the Mid() ASL/AML operator where it did not work
12014 correctly on Buffer objects. Newly created sub-buffers were not being
12019 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12020 performed on the OemId and OemTableId table header fields. These fields
12022 not null terminated, so strncmp is now used instead of strcmp.
12024 Implemented a restriction on the Store() ASL/AML operator to align the
12025 behavior with the ACPI specification. Previously, any object could be
12027 as the source operand. Now, the only objects that may be used are
12029 Buffers, Strings, Packages, Object References, and DDB Handles. If
12030 necessary, the original behavior can be restored by enabling the
12031 EnableInterpreterSlack flag.
12033 Enhanced the optional "implicit return" support to allow an implicit
12035 value from methods that are invoked externally via the AcpiEvaluateObject
12036 interface. This enables implicit returns from the _STA and _INI methods,
12039 Changed the Revision() ASL/AML operator to return the current version of
12041 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12043 the supported ACPI version (This is the function of the _REV method).
12045 Updated the _REV predefined method to return the currently supported
12049 Implemented batch mode option for the AcpiExec utility (-b).
12051 Code and Data Size: Current and previous core subsystem library sizes are
12052 shown below. These are the code and data sizes for the acpica.lib
12054 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12055 any ACPI driver or OSPM code. The debug version of the code includes the
12056 debug output trace mechanism and has a much larger code and data size.
12058 that these values will vary depending on the efficiency of the compiler
12060 the compiler options used during generation.
12063 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12064 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12066 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12067 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12069 ----------------------------------------
12070 10 December 2004. Summary of changes for version 20041210:
12072 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12073 ACPI CA core subsystem.
12075 1) ACPI CA Core Subsystem:
12077 Fixed a problem in the ToDecimalString operator where the resulting
12079 length was incorrectly calculated. The length is now calculated exactly,
12080 eliminating incorrect AE_STRING_LIMIT exceptions.
12082 Fixed a problem in the ToHexString operator to allow a maximum 200
12084 string to be produced.
12086 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12088 routine where the length of the resulting buffer was not truncated to the
12089 new size (if the target buffer already existed).
12091 Code and Data Size: Current and previous core subsystem library sizes are
12092 shown below. These are the code and data sizes for the acpica.lib
12094 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12095 any ACPI driver or OSPM code. The debug version of the code includes the
12096 debug output trace mechanism and has a much larger code and data size.
12098 that these values will vary depending on the efficiency of the compiler
12100 the compiler options used during generation.
12103 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12104 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12106 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12107 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12110 2) iASL Compiler/Disassembler:
12112 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12113 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12114 Includes support in the disassembler.
12116 Implemented support for the new (ACPI 3.0) parameter to the Register
12120 Fixed a problem where the _HE resource name for the Interrupt macro was
12121 referencing bit 0 instead of bit 1.
12123 Implemented check for maximum 255 interrupts in the Interrupt macro.
12125 Fixed a problem with the predefined resource descriptor names where
12126 incorrect AML code was generated if the offset within the resource buffer
12127 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12128 but did not update the surrounding package lengths.
12130 Changes to the Dma macro: All channels within the channel list must be
12132 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12133 optional (default is BusMaster).
12135 Implemented check for maximum 7 data bytes for the VendorShort macro.
12137 The ReadWrite parameter is now optional for the Memory32 and similar
12140 ----------------------------------------
12141 03 December 2004. Summary of changes for version 20041203:
12143 1) ACPI CA Core Subsystem:
12145 The low-level field insertion/extraction code (exfldio) has been
12147 rewritten to eliminate unnecessary complexity, bugs, and boundary
12150 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12152 operators where the input operand could be inadvertently deleted if no
12153 conversion was necessary (e.g., if the input to ToInteger was an Integer
12156 Fixed a problem with the ToDecimalString and ToHexString where an
12158 exception code was returned if the resulting string would be > 200 chars.
12159 AE_STRING_LIMIT is now returned.
12161 Fixed a problem with the Concatenate operator where AE_OK was always
12162 returned, even if the operation failed.
12164 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12165 semaphores to be allocated.
12167 Code and Data Size: Current and previous core subsystem library sizes are
12168 shown below. These are the code and data sizes for the acpica.lib
12170 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12171 any ACPI driver or OSPM code. The debug version of the code includes the
12172 debug output trace mechanism and has a much larger code and data size.
12174 that these values will vary depending on the efficiency of the compiler
12176 the compiler options used during generation.
12179 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12180 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12182 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12183 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12186 2) iASL Compiler/Disassembler:
12188 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12189 recently introduced in 20041119.
12191 Fixed a problem with the ToUUID macro where the upper nybble of each
12193 byte was inadvertently set to zero.
12195 ----------------------------------------
12196 19 November 2004. Summary of changes for version 20041119:
12198 1) ACPI CA Core Subsystem:
12200 Fixed a problem in the internal ConvertToInteger routine where new
12202 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12204 buffers and strings to integers.
12206 Implemented support to store a value to an Index() on a String object.
12208 is an ACPI 2.0 feature that had not yet been implemented.
12210 Implemented new behavior for storing objects to individual package
12212 (via the Index() operator). The previous behavior was to invoke the
12214 conversion rules if an object was already present at the index. The new
12215 behavior is to simply delete any existing object and directly store the
12217 object. Although the ACPI specification seems unclear on this subject,
12219 ACPI implementations behave in this manner. (This is the root of the
12220 AE_BAD_HEX_CONSTANT issue.)
12222 Modified the RSDP memory scan mechanism to support the extended checksum
12224 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12225 RSDP signature is found with a valid checksum.
12227 Code and Data Size: Current and previous core subsystem library sizes are
12228 shown below. These are the code and data sizes for the acpica.lib
12230 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12231 any ACPI driver or OSPM code. The debug version of the code includes the
12232 debug output trace mechanism and has a much larger code and data size.
12234 that these values will vary depending on the efficiency of the compiler
12236 the compiler options used during generation.
12239 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12240 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12242 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12243 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12246 2) iASL Compiler/Disassembler:
12248 Fixed a missing semicolon in the aslcompiler.y file.
12250 ----------------------------------------
12251 05 November 2004. Summary of changes for version 20041105:
12253 1) ACPI CA Core Subsystem:
12255 Implemented support for FADT revision 2. This was an interim table
12257 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12259 Implemented optional support to allow uninitialized LocalX and ArgX
12260 variables in a control method. The variables are initialized to an
12262 object with a value of zero. This support is enabled by setting the
12263 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12265 Implemented support for Integer objects for the SizeOf operator. Either
12267 or 8 is returned, depending on the current integer size (32-bit or 64-
12269 depending on the parent table revision).
12271 Fixed a problem in the implementation of the SizeOf and ObjectType
12273 where the operand was resolved to a value too early, causing incorrect
12274 return values for some objects.
12276 Fixed some possible memory leaks during exceptional conditions.
12278 Code and Data Size: Current and previous core subsystem library sizes are
12279 shown below. These are the code and data sizes for the acpica.lib
12281 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12282 any ACPI driver or OSPM code. The debug version of the code includes the
12283 debug output trace mechanism and has a much larger code and data size.
12285 that these values will vary depending on the efficiency of the compiler
12287 the compiler options used during generation.
12290 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12291 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12293 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12294 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12297 2) iASL Compiler/Disassembler:
12299 Implemented support for all ACPI 3.0 reserved names and methods.
12301 Implemented all ACPI 3.0 grammar elements in the front-end, including
12302 support for semicolons.
12304 Implemented the ACPI 3.0 Function() and ToUUID() macros
12306 Fixed a problem in the disassembler where a Scope() operator would not be
12307 emitted properly if the target of the scope was in another table.
12309 ----------------------------------------
12310 15 October 2004. Summary of changes for version 20041015:
12312 Note: ACPI CA is currently undergoing an in-depth and complete formal
12313 evaluation to test/verify the following areas. Other suggestions are
12314 welcome. This will result in an increase in the frequency of releases and
12315 the number of bug fixes in the next few months.
12316 - Functional tests for all ASL/AML operators
12317 - All implicit/explicit type conversions
12318 - Bit fields and operation regions
12319 - 64-bit math support and 32-bit-only "truncated" math support
12320 - Exceptional conditions, both compiler and interpreter
12321 - Dynamic object deletion and memory leaks
12322 - ACPI 3.0 support when implemented
12323 - External interfaces to the ACPI subsystem
12326 1) ACPI CA Core Subsystem:
12328 Fixed two alignment issues on 64-bit platforms - within debug statements
12330 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12332 field within the non-aligned ACPI generic address structure.
12334 Fixed a problem in the Increment and Decrement operators where incorrect
12335 operand resolution could result in the inadvertent modification of the
12336 original integer when the integer is passed into another method as an
12337 argument and the arg is then incremented/decremented.
12339 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12341 BCD number were truncated during conversion.
12343 Fixed a problem in the ToDecimal operator where the length of the
12345 string could be set incorrectly too long if the input operand was a
12349 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12351 within a buffer would prematurely terminate a compare between buffer
12354 Added a check for string overflow (>200 characters as per the ACPI
12355 specification) during the Concatenate operator with two string operands.
12357 Code and Data Size: Current and previous core subsystem library sizes are
12358 shown below. These are the code and data sizes for the acpica.lib
12360 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12361 any ACPI driver or OSPM code. The debug version of the code includes the
12362 debug output trace mechanism and has a much larger code and data size.
12364 that these values will vary depending on the efficiency of the compiler
12366 the compiler options used during generation.
12369 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12370 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12372 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12373 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12377 2) iASL Compiler/Disassembler:
12379 Allow the use of the ObjectType operator on uninitialized Locals and Args
12380 (returns 0 as per the ACPI specification).
12382 Fixed a problem where the compiler would fault if there was a syntax
12384 in the FieldName of all of the various CreateXXXField operators.
12386 Disallow the use of lower case letters within the EISAID macro, as per
12388 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12390 U is an uppercase letter and N is a hex digit.
12393 ----------------------------------------
12394 06 October 2004. Summary of changes for version 20041006:
12396 1) ACPI CA Core Subsystem:
12398 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12399 implements a 64-bit timer with 100 nanosecond granularity.
12401 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12402 implement the ACPI 3.0 Timer operator. This allows the host OS to
12404 the timer with the best clock available. Also, it keeps the core
12406 out of the clock handling business, since the host OS (usually) performs
12409 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12410 functions use a 64-bit address which is part of the packed ACPI Generic
12411 Address Structure. Since the structure is non-aligned, the alignment
12413 are now used to extract the address to a local variable before use.
12415 Fixed a problem where the ToInteger operator assumed all input strings
12417 hexadecimal. The operator now handles both decimal strings and hex
12419 (prefixed with "0x").
12421 Fixed a problem where the string length in the string object created as a
12422 result of the internal ConvertToString procedure could be incorrect. This
12423 potentially affected all implicit conversions and also the
12425 and ToHexString operators.
12427 Fixed two problems in the ToString operator. If the length parameter was
12428 zero, an incorrect string object was created and the value of the input
12429 length parameter was inadvertently changed from zero to Ones.
12431 Fixed a problem where the optional ResourceSource string in the
12433 resource macro was ignored.
12435 Simplified the interfaces to the internal division functions, reducing
12437 size and complexity.
12439 Code and Data Size: Current and previous core subsystem library sizes are
12440 shown below. These are the code and data sizes for the acpica.lib
12442 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12443 any ACPI driver or OSPM code. The debug version of the code includes the
12444 debug output trace mechanism and has a much larger code and data size.
12446 that these values will vary depending on the efficiency of the compiler
12448 the compiler options used during generation.
12451 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12452 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12454 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12455 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12458 2) iASL Compiler/Disassembler:
12460 Implemented support for the ACPI 3.0 Timer operator.
12462 Fixed a problem where the Default() operator was inadvertently ignored in
12464 Switch/Case block. This was a problem in the translation of the Switch
12465 statement to If...Else pairs.
12467 Added support to allow a standalone Return operator, with no parentheses
12471 Fixed a problem with code generation for the ElseIf operator where the
12472 translated Else...If parse tree was improperly constructed leading to the
12475 ----------------------------------------
12476 22 September 2004. Summary of changes for version 20040922:
12478 1) ACPI CA Core Subsystem:
12480 Fixed a problem with the implementation of the LNot() operator where
12482 was not returned for the TRUE case. Changed the code to return Ones
12484 of (!Arg) which was usually 1. This change affects iASL constant folding
12486 this operator also.
12488 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12490 initialized properly -- Now zero the entire buffer in this case where the
12491 buffer already exists.
12493 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12494 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12495 related code considerably. This will require changes/updates to all OS
12496 interface layers (OSLs.)
12498 Implemented a new external interface, AcpiInstallExceptionHandler, to
12500 a system exception handler to be installed. This handler is invoked upon
12502 run-time exception that occurs during control method execution.
12504 Added support for the DSDT in AcpiTbFindTable. This allows the
12505 DataTableRegion() operator to access the local copy of the DSDT.
12507 Code and Data Size: Current and previous core subsystem library sizes are
12508 shown below. These are the code and data sizes for the acpica.lib
12510 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12511 any ACPI driver or OSPM code. The debug version of the code includes the
12512 debug output trace mechanism and has a much larger code and data size.
12514 that these values will vary depending on the efficiency of the compiler
12516 the compiler options used during generation.
12519 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12520 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12522 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12523 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12526 2) iASL Compiler/Disassembler:
12528 Fixed a problem with constant folding and the LNot operator. LNot was
12529 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12531 could result in the generation of an incorrect folded/reduced constant.
12533 End-Of-File is now allowed within a "//"-style comment. A parse error no
12534 longer occurs if such a comment is at the very end of the input ASL
12538 Implemented the "-r" option to override the Revision in the table header.
12539 The initial use of this option will be to simplify the evaluation of the
12541 interpreter by allowing a single ASL source module to be compiled for
12543 32-bit or 64-bit integers.
12546 ----------------------------------------
12547 27 August 2004. Summary of changes for version 20040827:
12549 1) ACPI CA Core Subsystem:
12551 - Implemented support for implicit object conversion in the non-numeric
12552 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12554 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12555 the second operand is implicitly converted on the fly to match the type
12557 the first operand. For example:
12559 LEqual (Source1, Source2)
12561 Source1 and Source2 must each evaluate to an integer, a string, or a
12563 The data type of Source1 dictates the required type of Source2. Source2
12565 implicitly converted if necessary to match the type of Source1.
12567 - Updated and corrected the behavior of the string conversion support.
12569 rules concerning conversion of buffers to strings (according to the ACPI
12570 specification) are as follows:
12572 ToDecimalString - explicit byte-wise conversion of buffer to string of
12573 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12575 conversion of buffer to string of hex values (0-FF) separated by commas.
12576 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12578 copy with no transform except NULL terminated. Any other implicit buffer-
12580 string conversion - byte-wise conversion of buffer to string of hex
12582 (0-FF) separated by spaces.
12584 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12586 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12588 one byte too short in the case of a node in the root scope. This could
12589 cause a fault during debug output.
12591 - Code and Data Size: Current and previous core subsystem library sizes
12593 shown below. These are the code and data sizes for the acpica.lib
12595 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12596 any ACPI driver or OSPM code. The debug version of the code includes the
12597 debug output trace mechanism and has a much larger code and data size.
12599 that these values will vary depending on the efficiency of the compiler
12601 the compiler options used during generation.
12604 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12605 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12607 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12608 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12611 2) iASL Compiler/Disassembler:
12613 - Fixed a Linux generation error.
12616 ----------------------------------------
12617 16 August 2004. Summary of changes for version 20040816:
12619 1) ACPI CA Core Subsystem:
12621 Designed and implemented support within the AML interpreter for the so-
12622 called "implicit return". This support returns the result of the last
12624 operation within a control method, in the absence of an explicit Return()
12625 operator. A few machines depend on this behavior, even though it is not
12626 explicitly supported by the ASL language. It is optional support that
12628 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12630 Removed support for the PCI_Config address space from the internal low
12632 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12633 support was not used internally, and would not work correctly anyway
12635 the PCI bus number and segment number were not supported. There are
12636 separate interfaces for PCI configuration space access because of the
12640 Code and Data Size: Current and previous core subsystem library sizes are
12641 shown below. These are the code and data sizes for the acpica.lib
12643 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12644 any ACPI driver or OSPM code. The debug version of the code includes the
12645 debug output trace mechanism and has a much larger code and data size.
12647 that these values will vary depending on the efficiency of the compiler
12649 the compiler options used during generation.
12652 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12653 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12655 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12656 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12659 2) iASL Compiler/Disassembler:
12661 Fixed a problem where constants in ASL expressions at the root level (not
12662 within a control method) could be inadvertently truncated during code
12663 generation. This problem was introduced in the 20040715 release.
12666 ----------------------------------------
12667 15 July 2004. Summary of changes for version 20040715:
12669 1) ACPI CA Core Subsystem:
12671 Restructured the internal HW GPE interfaces to pass/track the current
12673 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12674 increase flexibility of the interfaces.
12676 Implemented a "lexicographical compare" for String and Buffer objects
12678 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12680 as per further clarification to the ACPI specification. Behavior is
12682 to C library "strcmp".
12684 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12685 external function. In the 32-bit non-debug case, the stack use has been
12686 reduced from 168 bytes to 32 bytes.
12688 Deployed a new run-time configuration flag,
12689 AcpiGbl_EnableInterpreterSlack,
12690 whose purpose is to allow the AML interpreter to forgive certain bad AML
12691 constructs. Default setting is FALSE.
12693 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12695 support code. If enabled, it allows field access to go beyond the end of
12697 region definition if the field is within the region length rounded up to
12699 next access width boundary (a common coding error.)
12701 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12702 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12704 symbols are lowercased by the latest version of the AcpiSrc tool.
12706 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12707 rename "Register" to simply "Reg" to prevent certain compilers from
12710 Code and Data Size: Current and previous core subsystem library sizes are
12711 shown below. These are the code and data sizes for the acpica.lib
12713 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12714 any ACPI driver or OSPM code. The debug version of the code includes the
12715 debug output trace mechanism and has a much larger code and data size.
12717 that these values will vary depending on the efficiency of the compiler
12719 the compiler options used during generation.
12722 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12723 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12725 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12726 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12729 2) iASL Compiler/Disassembler:
12731 Implemented full support for Package objects within the Case() operator.
12732 Note: The Break() operator is currently not supported within Case blocks
12733 (TermLists) as there is some question about backward compatibility with
12738 Fixed a problem where complex terms were not supported properly within
12742 Eliminated extraneous warning for compiler-emitted reserved names of the
12743 form "_T_x". (Used in Switch/Case operators.)
12745 Eliminated optimization messages for "_T_x" objects and small constants
12746 within the DefinitionBlock operator.
12749 ----------------------------------------
12750 15 June 2004. Summary of changes for version 20040615:
12752 1) ACPI CA Core Subsystem:
12754 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12756 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12759 All directory names in the entire source package are lower case, as they
12760 were in earlier releases.
12762 Implemented "Disassemble" command in the AML debugger that will
12764 a single control method.
12766 Code and Data Size: Current and previous core subsystem library sizes are
12767 shown below. These are the code and data sizes for the acpica.lib
12769 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12770 any ACPI driver or OSPM code. The debug version of the code includes the
12771 debug output trace mechanism and has a much larger code and data size.
12773 that these values will vary depending on the efficiency of the compiler
12775 the compiler options used during generation.
12778 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12779 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12782 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12783 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12786 2) iASL Compiler/Disassembler:
12788 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12790 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12793 All directory names in the entire source package are lower case, as they
12794 were in earlier releases.
12796 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
12799 Fixed an issue with the Windows version of the compiler where later
12801 of Windows place the FADT in the registry under the name "FADT" and not
12802 "FACP" as earlier versions did. This applies when using the -g or -
12803 d<nofilename> options. The compiler now looks for both strings as
12806 Fixed a problem with compiler namepath optimization where a namepath
12808 the Scope() operator could not be optimized if the namepath was a subpath
12810 the current scope path.
12812 ----------------------------------------
12813 27 May 2004. Summary of changes for version 20040527:
12815 1) ACPI CA Core Subsystem:
12817 Completed a new design and implementation for EBDA (Extended BIOS Data
12819 support in the RSDP scan code. The original code improperly scanned for
12821 EBDA by simply scanning from memory location 0 to 0x400. The correct
12823 is to first obtain the EBDA pointer from within the BIOS data area, then
12824 scan 1K of memory starting at the EBDA pointer. There appear to be few
12826 any machines that place the RSDP in the EBDA, however.
12828 Integrated a fix for a possible fault during evaluation of BufferField
12829 arguments. Obsolete code that was causing the problem was removed.
12831 Found and fixed a problem in the Field Support Code where data could be
12832 corrupted on a bit field read that starts on an aligned boundary but does
12833 not end on an aligned boundary. Merged the read/write "datum length"
12834 calculation code into a common procedure.
12836 Rolled in a couple of changes to the FreeBSD-specific header.
12839 Code and Data Size: Current and previous core subsystem library sizes are
12840 shown below. These are the code and data sizes for the acpica.lib
12842 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12843 any ACPI driver or OSPM code. The debug version of the code includes the
12844 debug output trace mechanism and has a much larger code and data size.
12846 that these values will vary depending on the efficiency of the compiler
12848 the compiler options used during generation.
12851 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12852 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12854 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12855 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12858 2) iASL Compiler/Disassembler:
12860 Fixed a generation warning produced by some overly-verbose compilers for
12864 ----------------------------------------
12865 14 May 2004. Summary of changes for version 20040514:
12867 1) ACPI CA Core Subsystem:
12869 Fixed a problem where hardware GPE enable bits sometimes not set properly
12870 during and after GPE method execution. Result of 04/27 changes.
12872 Removed extra "clear all GPEs" when sleeping/waking.
12874 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12875 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12877 the new AcpiEv* calls as appropriate.
12879 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12881 now "Microsoft Windows NT" for maximum compatibility. However this can
12883 changed by modifying the acconfig.h file.
12885 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12886 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12888 Run _INI methods on ThermalZone objects. This is against the ACPI
12889 specification, but there is apparently ASL code in the field that has
12891 _INI methods, and apparently "other" AML interpreters execute them.
12893 Performed a full 16/32/64 bit lint that resulted in some small changes.
12895 Added a sleep simulation command to the AML debugger to test sleep code.
12897 Code and Data Size: Current and previous core subsystem library sizes are
12898 shown below. These are the code and data sizes for the acpica.lib
12900 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12901 any ACPI driver or OSPM code. The debug version of the code includes the
12902 debug output trace mechanism and has a much larger code and data size.
12904 that these values will vary depending on the efficiency of the compiler
12906 the compiler options used during generation.
12909 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12910 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12912 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12913 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12915 ----------------------------------------
12916 27 April 2004. Summary of changes for version 20040427:
12918 1) ACPI CA Core Subsystem:
12920 Completed a major overhaul of the GPE handling within ACPI CA. There are
12921 now three types of GPEs: wake-only, runtime-only, and combination
12923 The only GPEs allowed to be combination wake/run are for button-style
12924 devices such as a control-method power button, control-method sleep
12926 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12928 referenced by any _PRW methods are marked for "runtime" and hardware
12929 enabled. Any GPE that is referenced by a _PRW method is marked for
12931 (and disabled at runtime). However, at sleep time, only those GPEs that
12932 have been specifically enabled for wake via the AcpiEnableGpe interface
12934 actually be hardware enabled.
12936 A new external interface has been added, AcpiSetGpeType(), that is meant
12938 be used by device drivers to force a GPE to a particular type. It will
12940 especially useful for the drivers for the button devices mentioned above.
12942 Completed restructuring of the ACPI CA initialization sequence so that
12943 default operation region handlers are installed before GPEs are
12945 and the _PRW methods are executed. This will prevent errors when the
12947 methods attempt to access system memory or I/O space.
12949 GPE enable/disable no longer reads the GPE enable register. We now keep
12951 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12952 thus no longer depend on the hardware to maintain these bits.
12954 Always clear the wake status and fixed/GPE status bits before sleep, even
12957 Improved the AML debugger output for displaying the GPE blocks and their
12960 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12964 Fixed a problem where the physical address was incorrectly calculated
12966 the Load() operator was used to directly load from an Operation Region
12968 loading from a Field object.) Also added check for minimum table length
12972 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12975 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12976 consistency with the other fields returned.
12978 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12979 structure for each GPE in the system, so the size of this structure is
12982 CPU stack requirement reduction: Cleaned up the method execution and
12984 evaluation paths so that now a parameter structure is passed, instead of
12985 copying the various method parameters over and over again.
12987 In evregion.c: Correctly exit and reenter the interpreter region if and
12988 only if dispatching an operation region request to a user-installed
12990 Do not exit/reenter when dispatching to a default handler (e.g., default
12991 system memory or I/O handlers)
12994 Notes for updating drivers for the new GPE support. The following
12996 must be made to ACPI-related device drivers that are attached to one or
12998 GPEs: (This information will be added to the ACPI CA Programmer
13001 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13003 explicitly call AcpiEnableGpe.
13004 2) There is a new interface called AcpiSetGpeType. This should be called
13005 before enabling the GPE. Also, this interface will automatically disable
13006 the GPE if it is currently enabled.
13007 3) AcpiEnableGpe no longer supports a GPE type flag.
13009 Specific drivers that must be changed:
13011 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13012 AeGpeHandler, NULL);
13013 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13014 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13016 2) Button Drivers (Power, Lid, Sleep):
13017 Run _PRW method under parent device
13018 If _PRW exists: /* This is a control-method button */
13019 Extract GPE number and possibly GpeDevice
13020 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13021 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13023 For all other devices that have _PRWs, we automatically set the GPE type
13025 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13027 must be done on a selective basis, usually requiring some kind of user
13029 to allow the user to pick the wake devices.
13032 Code and Data Size: Current and previous core subsystem library sizes are
13033 shown below. These are the code and data sizes for the acpica.lib
13035 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13036 any ACPI driver or OSPM code. The debug version of the code includes the
13037 debug output trace mechanism and has a much larger code and data size.
13039 that these values will vary depending on the efficiency of the compiler
13041 the compiler options used during generation.
13044 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13045 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13048 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13049 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13053 ----------------------------------------
13054 02 April 2004. Summary of changes for version 20040402:
13056 1) ACPI CA Core Subsystem:
13058 Fixed an interpreter problem where an indirect store through an ArgX
13059 parameter was incorrectly applying the "implicit conversion rules" during
13060 the store. From the ACPI specification: "If the target is a method local
13062 argument (LocalX or ArgX), no conversion is performed and the result is
13063 stored directly to the target". The new behavior is to disable implicit
13064 conversion during ALL stores to an ArgX.
13066 Changed the behavior of the _PRW method scan to ignore any and all errors
13067 returned by a given _PRW. This prevents the scan from aborting from the
13068 failure of any single _PRW.
13070 Moved the runtime configuration parameters from the global init procedure
13072 static variables in acglobal.h. This will allow the host to override the
13073 default values easily.
13075 Code and Data Size: Current and previous core subsystem library sizes are
13076 shown below. These are the code and data sizes for the acpica.lib
13078 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13079 any ACPI driver or OSPM code. The debug version of the code includes the
13080 debug output trace mechanism and has a much larger code and data size.
13082 that these values will vary depending on the efficiency of the compiler
13084 the compiler options used during generation.
13087 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13088 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13090 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13091 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13094 2) iASL Compiler/Disassembler:
13096 iASL now fully disassembles SSDTs. However, External() statements are
13098 generated automatically for unresolved symbols at this time. This is a
13099 planned feature for future implementation.
13101 Fixed a scoping problem in the disassembler that occurs when the type of
13103 target of a Scope() operator is overridden. This problem caused an
13104 incorrectly nested internal namespace to be constructed.
13106 Any warnings or errors that are emitted during disassembly are now
13108 out automatically so that the resulting file can be recompiled without
13112 ----------------------------------------
13113 26 March 2004. Summary of changes for version 20040326:
13115 1) ACPI CA Core Subsystem:
13117 Implemented support for "wake" GPEs via interaction between GPEs and the
13118 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13119 identified as a WAKE GPE and by default will no longer be enabled at
13120 runtime. Previously, we were blindly enabling all GPEs with a
13122 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13124 believe this has been the cause of thousands of "spurious" GPEs on some
13127 This new GPE behavior is can be reverted to the original behavior (enable
13128 ALL GPEs at runtime) via a runtime flag.
13130 Fixed a problem where aliased control methods could not access objects
13131 properly. The proper scope within the namespace was not initialized
13132 (transferred to the target of the aliased method) before executing the
13135 Fixed a potential race condition on internal object deletion on the
13137 object in AcpiEvaluateObject.
13139 Integrated a fix for resource descriptors where both _MEM and _MTP were
13140 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13141 wide, 0x0F instead of 0x03.)
13143 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13146 fault in some cases.
13148 Updated Notify() values for debug statements in evmisc.c
13150 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13152 Code and Data Size: Current and previous core subsystem library sizes are
13153 shown below. These are the code and data sizes for the acpica.lib
13155 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13156 any ACPI driver or OSPM code. The debug version of the code includes the
13157 debug output trace mechanism and has a much larger code and data size.
13159 that these values will vary depending on the efficiency of the compiler
13161 the compiler options used during generation.
13165 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13166 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13168 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13169 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13171 ----------------------------------------
13172 11 March 2004. Summary of changes for version 20040311:
13174 1) ACPI CA Core Subsystem:
13176 Fixed a problem where errors occurring during the parse phase of control
13177 method execution did not abort cleanly. For example, objects created and
13178 installed in the namespace were not deleted. This caused all subsequent
13179 invocations of the method to return the AE_ALREADY_EXISTS exception.
13181 Implemented a mechanism to force a control method to "Serialized"
13183 if the method attempts to create namespace objects. (The root of the
13184 AE_ALREADY_EXISTS problem.)
13186 Implemented support for the predefined _OSI "internal" control method.
13187 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13189 "Windows 2001.1", and can be easily upgraded for new strings as
13191 This feature will allow "other" operating systems to execute the fully
13192 tested, "Windows" code path through the ASL code
13194 Global Lock Support: Now allows multiple acquires and releases with any
13195 internal thread. Removed concept of "owning thread" for this special
13198 Fixed two functions that were inappropriately declaring large objects on
13200 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13202 method execution considerably.
13204 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13205 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13207 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13208 defined on the machine.
13210 Implemented two runtime options: One to force all control method
13212 to "Serialized" to mimic Windows behavior, another to disable _OSI
13214 if it causes problems on a given machine.
13216 Code and Data Size: Current and previous core subsystem library sizes are
13217 shown below. These are the code and data sizes for the acpica.lib
13219 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13220 any ACPI driver or OSPM code. The debug version of the code includes the
13221 debug output trace mechanism and has a much larger code and data size.
13223 that these values will vary depending on the efficiency of the compiler
13225 the compiler options used during generation.
13228 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13229 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13231 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13232 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13234 2) iASL Compiler/Disassembler:
13236 Fixed an array size problem for FreeBSD that would cause the compiler to
13239 ----------------------------------------
13240 20 February 2004. Summary of changes for version 20040220:
13243 1) ACPI CA Core Subsystem:
13245 Implemented execution of _SxD methods for Device objects in the
13246 GetObjectInfo interface.
13248 Fixed calls to _SST method to pass the correct arguments.
13250 Added a call to _SST on wake to restore to "working" state.
13252 Check for End-Of-Buffer failure case in the WalkResources interface.
13254 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13255 structures to the beginning of the file.
13257 After wake, clear GPE status register(s) before enabling GPEs.
13259 After wake, clear/enable power button. (Perhaps we should clear/enable
13261 fixed events upon wake.)
13263 Fixed a couple of possible memory leaks in the Namespace manager.
13265 Integrated latest acnetbsd.h file.
13267 ----------------------------------------
13268 11 February 2004. Summary of changes for version 20040211:
13271 1) ACPI CA Core Subsystem:
13273 Completed investigation and implementation of the call-by-reference
13274 mechanism for control method arguments.
13276 Fixed a problem where a store of an object into an indexed package could
13277 fail if the store occurs within a different method than the method that
13278 created the package.
13280 Fixed a problem where the ToDecimal operator could return incorrect
13283 Fixed a problem where the CopyObject operator could fail on some of the
13285 obscure objects (e.g., Reference objects.)
13287 Improved the output of the Debug object to display buffer, package, and
13290 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13292 the expected result.
13294 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13295 ACPI_AML_INTERNAL exception.
13297 Integrated latest version of acfreebsd.h
13299 ----------------------------------------
13300 16 January 2004. Summary of changes for version 20040116:
13302 The purpose of this release is primarily to update the copyright years in
13303 each module, thus causing a huge number of diffs. There are a few small
13304 functional changes, however.
13306 1) ACPI CA Core Subsystem:
13308 Improved error messages when there is a problem finding one or more of
13310 required base ACPI tables
13312 Reintroduced the definition of APIC_HEADER in actbl.h
13314 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13316 Removed extraneous reference to NewObj in dsmthdat.c
13320 Fixed a problem introduced in December that disabled the correct
13322 of Resource Templates
13325 ----------------------------------------
13326 03 December 2003. Summary of changes for version 20031203:
13328 1) ACPI CA Core Subsystem:
13330 Changed the initialization of Operation Regions during subsystem
13331 init to perform two entire walks of the ACPI namespace; The first
13332 to initialize the regions themselves, the second to execute the
13333 _REG methods. This fixed some interdependencies across _REG
13334 methods found on some machines.
13336 Fixed a problem where a Store(Local0, Local1) could simply update
13337 the object reference count, and not create a new copy of the
13338 object if the Local1 is uninitialized.
13340 Implemented support for the _SST reserved method during sleep
13343 Implemented support to clear the SLP_TYP and SLP_EN bits when
13344 waking up, this is apparently required by some machines.
13346 When sleeping, clear the wake status only if SleepState is not S5.
13348 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13349 pointer arithmetic advanced a string pointer too far.
13351 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13352 could be returned if the requested table has not been loaded.
13354 Within the support for IRQ resources, restructured the handling of
13355 the active and edge/level bits.
13357 Fixed a few problems in AcpiPsxExecute() where memory could be
13358 leaked under certain error conditions.
13360 Improved error messages for the cases where the ACPI mode could
13363 Code and Data Size: Current and previous core subsystem library
13364 sizes are shown below. These are the code and data sizes for the
13365 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13366 these values do not include any ACPI driver or OSPM code. The
13367 debug version of the code includes the debug output trace
13368 mechanism and has a much larger code and data size. Note that
13369 these values will vary depending on the efficiency of the compiler
13370 and the compiler options used during generation.
13372 Previous Release (20031029):
13373 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13374 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13376 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13377 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13379 2) iASL Compiler/Disassembler:
13381 Implemented a fix for the iASL disassembler where a bad index was
13382 generated. This was most noticeable on 64-bit platforms
13385 ----------------------------------------
13386 29 October 2003. Summary of changes for version 20031029:
13388 1) ACPI CA Core Subsystem:
13391 Fixed a problem where a level-triggered GPE with an associated
13392 _Lxx control method was incorrectly cleared twice.
13394 Fixed a problem with the Field support code where an access can
13395 occur beyond the end-of-region if the field is non-aligned but
13396 extends to the very end of the parent region (resulted in an
13397 AE_AML_REGION_LIMIT exception.)
13399 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13400 would not get invoked on an RTC event. The RTC event bitmasks for
13401 the PM1 registers were not being initialized properly.
13403 Implemented support for executing _STA and _INI methods for
13404 Processor objects. Although this is currently not part of the
13405 ACPI specification, there is existing ASL code that depends on the
13406 init-time execution of these methods.
13408 Implemented and deployed a GetDescriptorName function to decode
13409 the various types of internal descriptors. Guards against null
13410 descriptors during debug output also.
13412 Implemented and deployed a GetNodeName function to extract the 4-
13413 character namespace node name. This function simplifies the debug
13414 and error output, as well as guarding against null pointers during
13417 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13418 simplify the debug and error output of 64-bit integers. This
13419 macro replaces the HIDWORD and LODWORD macros for dumping these
13422 Updated the implementation of the Stall() operator to only call
13423 AcpiOsStall(), and also return an error if the operand is larger
13424 than 255. This preserves the required behavior of not
13425 relinquishing the processor, as would happen if AcpiOsSleep() was
13426 called for "long stalls".
13428 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13429 initialized are now treated as NOOPs.
13431 Cleaned up a handful of warnings during 64-bit generation.
13433 Fixed a reported error where and incorrect GPE number was passed
13434 to the GPE dispatch handler. This value is only used for error
13435 output, however. Used this opportunity to clean up and streamline
13436 the GPE dispatch code.
13438 Code and Data Size: Current and previous core subsystem library
13439 sizes are shown below. These are the code and data sizes for the
13440 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13441 these values do not include any ACPI driver or OSPM code. The
13443 debug version of the code includes the debug output trace
13444 mechanism and has a much larger code and data size. Note that
13445 these values will vary depending on the efficiency of the compiler
13446 and the compiler options used during generation.
13448 Previous Release (20031002):
13449 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13450 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13452 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13453 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13456 2) iASL Compiler/Disassembler:
13458 Updated the iASL compiler to return an error if the operand to the
13459 Stall() operator is larger than 255.
13462 ----------------------------------------
13463 02 October 2003. Summary of changes for version 20031002:
13466 1) ACPI CA Core Subsystem:
13468 Fixed a problem with Index Fields where the index was not
13469 incremented for fields that require multiple writes to the
13470 index/data registers (Fields that are wider than the data
13473 Fixed a problem with all Field objects where a write could go
13474 beyond the end-of-field if the field was larger than the access
13475 granularity and therefore required multiple writes to complete the
13476 request. An extra write beyond the end of the field could happen
13479 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13480 would incorrectly be returned if the width of the Data Register
13481 was larger than the specified field access width.
13483 Completed fixes for LoadTable() and Unload() and verified their
13484 operation. Implemented full support for the "DdbHandle" object
13485 throughout the ACPI CA subsystem.
13487 Implemented full support for the MADT and ECDT tables in the ACPI
13488 CA header files. Even though these tables are not directly
13489 consumed by ACPI CA, the header definitions are useful for ACPI
13492 Integrated resource descriptor fixes posted to the Linux ACPI
13493 list. This included checks for minimum descriptor length, and
13494 support for trailing NULL strings within descriptors that have
13495 optional string elements.
13497 Code and Data Size: Current and previous core subsystem library
13498 sizes are shown below. These are the code and data sizes for the
13499 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13500 these values do not include any ACPI driver or OSPM code. The
13501 debug version of the code includes the debug output trace
13502 mechanism and has a much larger code and data size. Note that
13503 these values will vary depending on the efficiency of the compiler
13504 and the compiler options used during generation.
13506 Previous Release (20030918):
13507 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13508 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13510 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13511 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13516 Implemented detection of non-ASCII characters within the input
13517 source ASL file. This catches attempts to compile binary (AML)
13518 files early in the compile, with an informative error message.
13520 Fixed a problem where the disassembler would fault if the output
13521 filename could not be generated or if the output file could not be
13524 ----------------------------------------
13525 18 September 2003. Summary of changes for version 20030918:
13528 1) ACPI CA Core Subsystem:
13530 Found and fixed a longstanding problem with the late execution of
13531 the various deferred AML opcodes (such as Operation Regions,
13532 Buffer Fields, Buffers, and Packages). If the name string
13533 specified for the name of the new object placed the object in a
13534 scope other than the current scope, the initialization/execution
13535 of the opcode failed. The solution to this problem was to
13536 implement a mechanism where the late execution of such opcodes
13537 does not attempt to lookup/create the name a second time in an
13538 incorrect scope. This fixes the "region size computed
13539 incorrectly" problem.
13541 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13542 Global Lock AE_BAD_PARAMETER error.
13544 Fixed several 64-bit issues with prototypes, casting and data
13547 Removed duplicate prototype from acdisasm.h
13549 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13551 Code and Data Size: Current and previous core subsystem library
13552 sizes are shown below. These are the code and data sizes for the
13553 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13554 these values do not include any ACPI driver or OSPM code. The
13555 debug version of the code includes the debug output trace
13556 mechanism and has a much larger code and data size. Note that
13557 these values will vary depending on the efficiency of the compiler
13558 and the compiler options used during generation.
13562 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13563 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13565 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13566 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13571 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13572 correct sleep time in seconds.
13574 ----------------------------------------
13575 14 July 2003. Summary of changes for version 20030619:
13577 1) ACPI CA Core Subsystem:
13579 Parse SSDTs in order discovered, as opposed to reverse order
13582 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13589 Dynamically allocate SDT list (suggested by Andi Kleen)
13591 proc function return value cleanups (Andi Kleen)
13593 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13595 Make it so acpismp=force works (reported by Andrew Morton)
13598 ----------------------------------------
13599 19 June 2003. Summary of changes for version 20030619:
13601 1) ACPI CA Core Subsystem:
13603 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13605 Do not acquire a semaphore in the S5 shutdown path.
13607 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13609 Fix sleep/stall code reversal. (Andi Kleen)
13611 Revert a change having to do with control method calling
13616 acpiphp update (Takayoshi Kochi)
13618 Export acpi_disabled for sonypi (Stelian Pop)
13620 Mention acpismp=force in config help
13622 Re-add acpitable.c and acpismp=force. This improves backwards
13624 compatibility and also cleans up the code to a significant degree.
13626 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13628 ----------------------------------------
13629 22 May 2003. Summary of changes for version 20030522:
13631 1) ACPI CA Core Subsystem:
13633 Found and fixed a reported problem where an AE_NOT_FOUND error
13634 occurred occasionally during _BST evaluation. This turned out to
13635 be an Owner ID allocation issue where a called method did not get
13636 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13637 ID UINT16 would wraparound so that the ID would be the same as the
13638 caller's and the called method would delete the caller's
13641 Implemented extended error reporting for control methods that are
13642 aborted due to a run-time exception. Output includes the exact
13643 AML instruction that caused the method abort, a dump of the method
13644 locals and arguments at the time of the abort, and a trace of all
13645 nested control method calls.
13647 Modified the interpreter to allow the creation of buffers of zero
13648 length from the AML code. Implemented new code to ensure that no
13649 attempt is made to actually allocate a memory buffer (of length
13650 zero) - instead, a simple buffer object with a NULL buffer pointer
13651 and length zero is created. A warning is no longer issued when
13652 the AML attempts to create a zero-length buffer.
13654 Implemented a workaround for the "leading asterisk issue" in
13655 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13656 asterisk is automatically removed if present in any HID, UID, or
13657 CID strings. The iASL compiler will still flag this asterisk as
13660 Implemented full support for _CID methods that return a package of
13661 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13662 now additionally returns a device _CID list if present. This
13663 required a change to the external interface in order to pass an
13664 ACPI_BUFFER object as a parameter since the _CID list is of
13667 Fixed a problem with the new AE_SAME_HANDLER exception where
13668 handler initialization code did not know about this exception.
13670 Code and Data Size: Current and previous core subsystem library
13671 sizes are shown below. These are the code and data sizes for the
13672 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13673 these values do not include any ACPI driver or OSPM code. The
13674 debug version of the code includes the debug output trace
13675 mechanism and has a much larger code and data size. Note that
13676 these values will vary depending on the efficiency of the compiler
13677 and the compiler options used during generation.
13679 Previous Release (20030509):
13680 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13681 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13683 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13684 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13689 Fixed a bug in which we would reinitialize the ACPI interrupt
13690 after it was already working, thus disabling all ACPI and the IRQs
13691 for any other device sharing the interrupt. (Thanks to Stian
13694 Toshiba driver update (John Belmonte)
13696 Return only 0 or 1 for our interrupt handler status (Andrew
13702 Fixed a reported problem where multiple (nested) ElseIf()
13703 statements were not handled correctly by the compiler, resulting
13704 in incorrect warnings and incorrect AML code. This was a problem
13705 in both the ASL parser and the code generator.
13710 Added changes to existing interfaces, new exception codes, and new
13711 text concerning reference count object management versus garbage
13714 ----------------------------------------
13715 09 May 2003. Summary of changes for version 20030509.
13718 1) ACPI CA Core Subsystem:
13720 Changed the subsystem initialization sequence to hold off
13721 installation of address space handlers until the hardware has been
13722 initialized and the system has entered ACPI mode. This is because
13723 the installation of space handlers can cause _REG methods to be
13724 run. Previously, the _REG methods could potentially be run before
13725 ACPI mode was enabled.
13727 Fixed some memory leak issues related to address space handler and
13728 notify handler installation. There were some problems with the
13729 reference count mechanism caused by the fact that the handler
13730 objects are shared across several namespace objects.
13732 Fixed a reported problem where reference counts within the
13733 namespace were not properly updated when named objects created by
13734 method execution were deleted.
13736 Fixed a reported problem where multiple SSDTs caused a deletion
13737 issue during subsystem termination. Restructured the table data
13738 structures to simplify the linked lists and the related code.
13740 Fixed a problem where the table ID associated with secondary
13741 tables (SSDTs) was not being propagated into the namespace objects
13742 created by those tables. This would only present a problem for
13743 tables that are unloaded at run-time, however.
13745 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13746 type as the length parameter (instead of UINT32).
13748 Solved a long-standing problem where an ALREADY_EXISTS error
13749 appears on various systems. This problem could happen when there
13750 are multiple PCI_Config operation regions under a single PCI root
13751 bus. This doesn't happen very frequently, but there are some
13752 systems that do this in the ASL.
13754 Fixed a reported problem where the internal DeleteNode function
13755 was incorrectly handling the case where a namespace node was the
13756 first in the parent's child list, and had additional peers (not
13757 the only child, but first in the list of children.)
13759 Code and Data Size: Current core subsystem library sizes are shown
13760 below. These are the code and data sizes for the acpica.lib
13761 produced by the Microsoft Visual C++ 6.0 compiler, and these
13762 values do not include any ACPI driver or OSPM code. The debug
13763 version of the code includes the debug output trace mechanism and
13764 has a much larger code and data size. Note that these values will
13765 vary depending on the efficiency of the compiler and the compiler
13766 options used during generation.
13769 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13770 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13772 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13773 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13778 Allow ":" in OS override string (Ducrot Bruno)
13780 Kobject fix (Greg KH)
13783 3 iASL Compiler/Disassembler:
13785 Fixed a problem in the generation of the C source code files (AML
13786 is emitted in C source statements for BIOS inclusion) where the
13787 Ascii dump that appears within a C comment at the end of each line
13788 could cause a compile time error if the AML sequence happens to
13789 have an open comment or close comment sequence embedded.
13792 ----------------------------------------
13793 24 April 2003. Summary of changes for version 20030424.
13796 1) ACPI CA Core Subsystem:
13798 Support for big-endian systems has been implemented. Most of the
13799 support has been invisibly added behind big-endian versions of the
13800 ACPI_MOVE_* macros.
13802 Fixed a problem in AcpiHwDisableGpeBlock() and
13803 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
13804 low level hardware write routine. The offset parameter was
13805 actually eliminated from the low level read/write routines because
13806 they had become obsolete.
13808 Fixed a problem where a handler object was deleted twice during
13809 the removal of a fixed event handler.
13814 A fix for SMP systems with link devices was contributed by
13818 (2.5) Return whether we handled the interrupt in our IRQ handler.
13819 (Linux ISRs no longer return void, so we can propagate the handler
13820 return value from the ACPI CA core back to the OS.)
13826 The ACPI CA Programmer Reference has been updated to reflect new
13827 interfaces and changes to existing interfaces.
13829 ----------------------------------------
13830 28 March 2003. Summary of changes for version 20030328.
13832 1) ACPI CA Core Subsystem:
13834 The GPE Block Device support has been completed. New interfaces
13835 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
13836 interfaces (enable, disable, clear, getstatus) have been split
13837 into separate interfaces for Fixed Events and General Purpose
13838 Events (GPEs) in order to support GPE Block Devices properly.
13840 Fixed a problem where the error message "Failed to acquire
13841 semaphore" would appear during operations on the embedded
13844 Code and Data Size: Current core subsystem library sizes are shown
13845 below. These are the code and data sizes for the acpica.lib
13846 produced by the Microsoft Visual C++ 6.0 compiler, and these
13847 values do not include any ACPI driver or OSPM code. The debug
13848 version of the code includes the debug output trace mechanism and
13849 has a much larger code and data size. Note that these values will
13850 vary depending on the efficiency of the compiler and the compiler
13851 options used during generation.
13854 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13855 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13857 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13858 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13861 ----------------------------------------
13862 28 February 2003. Summary of changes for version 20030228.
13865 1) ACPI CA Core Subsystem:
13867 The GPE handling and dispatch code has been completely overhauled
13868 in preparation for support of GPE Block Devices (ID ACPI0006).
13869 This affects internal data structures and code only; there should
13870 be no differences visible externally. One new file has been
13873 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13874 fields that are used to determine the GPE block lengths. The
13875 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13876 structures are ignored. This is per the ACPI specification but it
13877 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13878 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13880 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13881 register to look at the SCI_EN bit. On some machines, this read
13882 causes an SMI event and greatly slows down SCI events. (This may
13883 in fact be the cause of slow battery status response on some
13886 Fixed a problem where a store of a NULL string to a package object
13887 could cause the premature deletion of the object. This was seen
13888 during execution of the battery _BIF method on some systems,
13889 resulting in no battery data being returned.
13891 Added AcpiWalkResources interface to simplify parsing of resource
13894 Code and Data Size: Current core subsystem library sizes are shown
13895 below. These are the code and data sizes for the acpica.lib
13896 produced by the Microsoft Visual C++ 6.0 compiler, and these
13897 values do not include any ACPI driver or OSPM code. The debug
13898 version of the code includes the debug output trace mechanism and
13899 has a much larger code and data size. Note that these values will
13900 vary depending on the efficiency of the compiler and the compiler
13901 options used during generation.
13904 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13905 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13907 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13908 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13913 S3 fixes (Ole Rohne)
13915 Update ACPI PHP driver with to use new acpi_walk_resource API
13918 Add S4BIOS support (Pavel Machek)
13920 Map in entire table before performing checksum (John Stultz)
13922 Expand the mem= cmdline to allow the specification of reserved and
13923 ACPI DATA blocks (Pavel Machek)
13925 Never use ACPI on VISWS
13927 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13929 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13930 causing us to think that some systems support C2 when they really
13933 Do not count processor objects for non-present CPUs (Thanks to
13939 Fixed a problem where ASL include files could not be found and
13942 Added support for the _PDC reserved name.
13945 ----------------------------------------
13946 22 January 2003. Summary of changes for version 20030122.
13949 1) ACPI CA Core Subsystem:
13951 Added a check for constructs of the form: Store (Local0, Local0)
13952 where Local0 is not initialized. Apparently, some BIOS
13953 programmers believe that this is a NOOP. Since this store doesn't
13954 do anything anyway, the new prototype behavior will ignore this
13955 error. This is a case where we can relax the strict checking in
13956 the interpreter in the name of compatibility.
13961 The AcpiSrc Source Conversion Utility has been released with the
13962 Linux package for the first time. This is the utility that is
13963 used to convert the ACPI CA base source code to the Linux version.
13965 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13967 (Both) Move more headers to include/acpi, and delete an unused
13970 (Both) Move drivers/acpi/include directory to include/acpi
13972 (Both) Boot functions don't use cmdline, so don't pass it around
13974 (Both) Remove include of unused header (Adrian Bunk)
13976 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13978 former now also includes the latter, acpiphp.h only needs the one,
13981 (2.5) Make it possible to select method of bios restoring after S3
13982 resume. [=> no more ugly ifdefs] (Pavel Machek)
13984 (2.5) Make proc write interfaces work (Pavel Machek)
13986 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13988 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13989 (Dominik Brodowski)
13991 (2.4) S4BIOS support (Ducrot Bruno)
13993 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13999 Added support to disassemble SSDT and PSDTs.
14001 Implemented support to obtain SSDTs from the Windows registry if
14005 ----------------------------------------
14006 09 January 2003. Summary of changes for version 20030109.
14008 1) ACPI CA Core Subsystem:
14010 Changed the behavior of the internal Buffer-to-String conversion
14011 function. The current ACPI specification states that the contents
14012 of the buffer are "converted to a string of two-character
14013 hexadecimal numbers, each separated by a space". Unfortunately,
14014 this definition is not backwards compatible with existing ACPI 1.0
14015 implementations (although the behavior was not defined in the ACPI
14016 1.0 specification). The new behavior simply copies data from the
14017 buffer to the string until a null character is found or the end of
14018 the buffer is reached. The new String object is always null
14019 terminated. This problem was seen during the generation of _BIF
14020 battery data where incorrect strings were returned for battery
14021 type, etc. This will also require an errata to the ACPI
14024 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14025 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14027 Copyright in all module headers (both Linux and non-Linux) has be
14030 Code and Data Size: Current core subsystem library sizes are shown
14031 below. These are the code and data sizes for the acpica.lib
14032 produced by the Microsoft Visual C++ 6.0 compiler, and these
14033 values do not include any ACPI driver or OSPM code. The debug
14034 version of the code includes the debug output trace mechanism and
14035 has a much larger code and data size. Note that these values will
14036 vary depending on the efficiency of the compiler and the compiler
14037 options used during generation.
14040 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14041 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14043 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14044 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14049 Fixed an oops on module insertion/removal (Matthew Tippett)
14051 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14053 (2.5) Replace pr_debug (Randy Dunlap)
14055 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14057 (Both) Eliminate spawning of thread from timer callback, in favor
14060 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14062 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14064 (Both) Add missing statics to button.c (Pavel Machek)
14066 Several changes have been made to the source code translation
14067 utility that generates the Linux Code in order to make the code
14070 All typedefs on structs and unions have been removed in keeping
14071 with the Linux coding style.
14073 Removed the non-Linux SourceSafe module revision number from each
14076 Completed major overhaul of symbols to be lowercased for linux.
14077 Doubled the number of symbols that are lowercased.
14079 Fixed a problem where identifiers within procedure headers and
14080 within quotes were not fully lower cased (they were left with a
14083 Some C macros whose only purpose is to allow the generation of 16-
14084 bit code are now completely removed in the Linux code, increasing
14085 readability and maintainability.
14087 ----------------------------------------
14089 12 December 2002. Summary of changes for version 20021212.
14092 1) ACPI CA Core Subsystem:
14094 Fixed a problem where the creation of a zero-length AML Buffer
14095 would cause a fault.
14097 Fixed a problem where a Buffer object that pointed to a static AML
14098 buffer (in an ACPI table) could inadvertently be deleted, causing
14101 Fixed a problem where a user buffer (passed in to the external
14102 ACPI CA interfaces) could be overwritten if the buffer was too
14103 small to complete the operation, causing memory corruption.
14105 Fixed a problem in the Buffer-to-String conversion code where a
14106 string of length one was always returned, regardless of the size
14107 of the input Buffer object.
14109 Removed the NATIVE_CHAR data type across the entire source due to
14110 lack of need and lack of consistent use.
14112 Code and Data Size: Current core subsystem library sizes are shown
14113 below. These are the code and data sizes for the acpica.lib
14114 produced by the Microsoft Visual C++ 6.0 compiler, and these
14115 values do not include any ACPI driver or OSPM code. The debug
14116 version of the code includes the debug output trace mechanism and
14117 has a much larger code and data size. Note that these values will
14118 vary depending on the efficiency of the compiler and the compiler
14119 options used during generation.
14122 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14123 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14125 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14126 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14129 ----------------------------------------
14130 05 December 2002. Summary of changes for version 20021205.
14132 1) ACPI CA Core Subsystem:
14134 Fixed a problem where a store to a String or Buffer object could
14135 cause corruption of the DSDT if the object type being stored was
14136 the same as the target object type and the length of the object
14137 being stored was equal to or smaller than the original (existing)
14138 target object. This was seen to cause corruption of battery _BIF
14139 buffers if the _BIF method modified the buffer on the fly.
14141 Fixed a problem where an internal error was generated if a control
14142 method invocation was used in an OperationRegion, Buffer, or
14143 Package declaration. This was caused by the deferred parsing of
14144 the control method and thus the deferred creation of the internal
14145 method object. The solution to this problem was to create the
14146 internal method object at the moment the method is encountered in
14147 the first pass - so that subsequent references to the method will
14148 able to obtain the required parameter count and thus properly
14149 parse the method invocation. This problem presented itself as an
14150 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14152 Fixed a problem where the internal String object copy routine did
14153 not always allocate sufficient memory for the target String object
14154 and caused memory corruption. This problem was seen to cause
14155 "Allocation already present in list!" errors as memory allocation
14158 Implemented a new function for the evaluation of namespace objects
14159 that allows the specification of the allowable return object
14160 types. This simplifies a lot of code that checks for a return
14161 object of one or more specific objects returned from the
14162 evaluation (such as _STA, etc.) This may become and external
14163 function if it would be useful to ACPI-related drivers.
14165 Completed another round of prefixing #defines with "ACPI_" for
14168 Completed additional code restructuring to allow more modular
14169 linking for iASL compiler and AcpiExec. Several files were split
14170 creating new files. New files: nsparse.c dsinit.c evgpe.c
14172 Implemented an abort mechanism to terminate an executing control
14173 method via the AML debugger. This feature is useful for debugging
14174 control methods that depend (wait) for specific hardware
14177 Code and Data Size: Current core subsystem library sizes are shown
14178 below. These are the code and data sizes for the acpica.lib
14179 produced by the Microsoft Visual C++ 6.0 compiler, and these
14180 values do not include any ACPI driver or OSPM code. The debug
14181 version of the code includes the debug output trace mechanism and
14182 has a much larger code and data size. Note that these values will
14183 vary depending on the efficiency of the compiler and the compiler
14184 options used during generation.
14187 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14188 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14190 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14191 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14194 2) iASL Compiler/Disassembler
14196 Fixed a compiler code generation problem for "Interrupt" Resource
14197 Descriptors. If specified in the ASL, the optional "Resource
14198 Source Index" and "Resource Source" fields were not inserted into
14199 the correct location within the AML resource descriptor, creating
14200 an invalid descriptor.
14202 Fixed a disassembler problem for "Interrupt" resource descriptors.
14203 The optional "Resource Source Index" and "Resource Source" fields
14207 ----------------------------------------
14208 22 November 2002. Summary of changes for version 20021122.
14211 1) ACPI CA Core Subsystem:
14213 Fixed a reported problem where an object stored to a Method Local
14214 or Arg was not copied to a new object during the store - the
14215 object pointer was simply copied to the Local/Arg. This caused
14216 all subsequent operations on the Local/Arg to also affect the
14217 original source of the store operation.
14219 Fixed a problem where a store operation to a Method Local or Arg
14220 was not completed properly if the Local/Arg contained a reference
14221 (from RefOf) to a named field. The general-purpose store-to-
14222 namespace-node code is now used so that this case is handled
14225 Fixed a problem where the internal object copy routine would cause
14226 a protection fault if the object being copied was a Package and
14227 contained either 1) a NULL package element or 2) a nested sub-
14230 Fixed a problem with the GPE initialization that resulted from an
14231 ambiguity in the ACPI specification. One section of the
14232 specification states that both the address and length of the GPE
14233 block must be zero if the block is not supported. Another section
14234 implies that only the address need be zero if the block is not
14235 supported. The code has been changed so that both the address and
14236 the length must be non-zero to indicate a valid GPE block (i.e.,
14237 if either the address or the length is zero, the GPE block is
14240 Code and Data Size: Current core subsystem library sizes are shown
14241 below. These are the code and data sizes for the acpica.lib
14242 produced by the Microsoft Visual C++ 6.0 compiler, and these
14243 values do not include any ACPI driver or OSPM code. The debug
14244 version of the code includes the debug output trace mechanism and
14245 has a much larger code and data size. Note that these values will
14246 vary depending on the efficiency of the compiler and the compiler
14247 options used during generation.
14250 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14251 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14253 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14254 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14259 Cleaned up EC driver. Exported an external EC read/write
14260 interface. By going through this, other drivers (most notably
14261 sonypi) will be able to serialize access to the EC.
14264 3) iASL Compiler/Disassembler
14266 Implemented support to optionally generate include files for both
14267 ASM and C (the -i switch). This simplifies BIOS development by
14268 automatically creating include files that contain external
14269 declarations for the symbols that are created within the
14271 (optionally generated) ASM and C AML source files.
14274 ----------------------------------------
14275 15 November 2002. Summary of changes for version 20021115.
14277 1) ACPI CA Core Subsystem:
14279 Fixed a memory leak problem where an error during resolution of
14281 method arguments during a method invocation from another method
14282 failed to cleanup properly by deleting all successfully resolved
14285 Fixed a problem where the target of the Index() operator was not
14286 correctly constructed if the source object was a package. This
14287 problem has not been detected because the use of a target operand
14288 with Index() is very rare.
14290 Fixed a problem with the Index() operator where an attempt was
14291 made to delete the operand objects twice.
14293 Fixed a problem where an attempt was made to delete an operand
14294 twice during execution of the CondRefOf() operator if the target
14297 Implemented the first of perhaps several internal create object
14298 functions that create and initialize a specific object type. This
14299 consolidates duplicated code wherever the object is created, thus
14300 shrinking the size of the subsystem.
14302 Implemented improved debug/error messages for errors that occur
14303 during nested method invocations. All executing method pathnames
14304 are displayed (with the error) as the call stack is unwound - thus
14307 Fixed a problem introduced in the 10/02 release that caused
14308 premature deletion of a buffer object if a buffer was used as an
14309 ASL operand where an integer operand is required (Thus causing an
14310 implicit object conversion from Buffer to Integer.) The change in
14311 the 10/02 release was attempting to fix a memory leak (albeit
14314 Code and Data Size: Current core subsystem library sizes are shown
14315 below. These are the code and data sizes for the acpica.lib
14316 produced by the Microsoft Visual C++ 6.0 compiler, and these
14317 values do not include any ACPI driver or OSPM code. The debug
14318 version of the code includes the debug output trace mechanism and
14319 has a much larger code and data size. Note that these values will
14320 vary depending on the efficiency of the compiler and the compiler
14321 options used during generation.
14324 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14325 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14327 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14328 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14333 Changed the implementation of the ACPI semaphores to use down()
14334 instead of down_interruptable(). It is important that the
14335 execution of ACPI control methods not be interrupted by signals.
14336 Methods must run to completion, or the system may be left in an
14337 unknown/unstable state.
14339 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14343 3) iASL Compiler/Disassembler
14346 Changed the default location of output files. All output files
14347 are now placed in the current directory by default instead of in
14348 the directory of the source file. This change may affect some
14349 existing makefiles, but it brings the behavior of the compiler in
14350 line with other similar tools. The location of the output files
14351 can be overridden with the -p command line switch.
14354 ----------------------------------------
14355 11 November 2002. Summary of changes for version 20021111.
14358 0) ACPI Specification 2.0B is released and is now available at:
14359 http://www.acpi.info/index.html
14362 1) ACPI CA Core Subsystem:
14364 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14365 This includes the early detection and handoff of the request to
14366 the SMBus region handler (avoiding all of the complex field
14367 support code), and support for the bidirectional return packet
14368 from an SMBus write operation. This paves the way for the
14369 development of SMBus drivers in each host operating system.
14371 Fixed a problem where the semaphore WAIT_FOREVER constant was
14372 defined as 32 bits, but must be 16 bits according to the ACPI
14373 specification. This had the side effect of causing ASL
14374 Mutex/Event timeouts even though the ASL code requested a wait
14375 forever. Changed all internal references to the ACPI timeout
14376 parameter to 16 bits to prevent future problems. Changed the name
14377 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14379 Code and Data Size: Current core subsystem library sizes are shown
14380 below. These are the code and data sizes for the acpica.lib
14381 produced by the Microsoft Visual C++ 6.0 compiler, and these
14382 values do not include any ACPI driver or OSPM code. The debug
14383 version of the code includes the debug output trace mechanism and
14384 has a much larger code and data size. Note that these values will
14385 vary depending on the efficiency of the compiler and the compiler
14386 options used during generation.
14389 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14390 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14392 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14393 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14398 Module loading/unloading fixes (John Cagle)
14401 3) iASL Compiler/Disassembler
14403 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14405 Implemented support for the disassembly of all SMBus protocol
14406 keywords (SMBQuick, SMBWord, etc.)
14408 ----------------------------------------
14409 01 November 2002. Summary of changes for version 20021101.
14412 1) ACPI CA Core Subsystem:
14414 Fixed a problem where platforms that have a GPE1 block but no GPE0
14415 block were not handled correctly. This resulted in a "GPE
14416 overlap" error message. GPE0 is no longer required.
14418 Removed code added in the previous release that inserted nodes
14419 into the namespace in alphabetical order. This caused some side-
14420 effects on various machines. The root cause of the problem is
14421 still under investigation since in theory, the internal ordering
14422 of the namespace nodes should not matter.
14425 Enhanced error reporting for the case where a named object is not
14426 found during control method execution. The full ACPI namepath
14427 (name reference) of the object that was not found is displayed in
14430 Note: as a result of the overhaul of the namespace object types in
14431 the previous release, the namespace nodes for the predefined
14432 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14433 instead of ACPI_TYPE_ANY. This simplifies the namespace
14434 management code but may affect code that walks the namespace tree
14435 looking for specific object types.
14437 Code and Data Size: Current core subsystem library sizes are shown
14438 below. These are the code and data sizes for the acpica.lib
14439 produced by the Microsoft Visual C++ 6.0 compiler, and these
14440 values do not include any ACPI driver or OSPM code. The debug
14441 version of the code includes the debug output trace mechanism and
14442 has a much larger code and data size. Note that these values will
14443 vary depending on the efficiency of the compiler and the compiler
14444 options used during generation.
14447 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14448 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14450 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14451 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14456 Fixed a problem introduced in the previous release where the
14457 Processor and Thermal objects were not recognized and installed in
14458 /proc. This was related to the scope type change described above.
14461 3) iASL Compiler/Disassembler
14463 Implemented the -g option to get all of the required ACPI tables
14464 from the registry and save them to files (Windows version of the
14465 compiler only.) The required tables are the FADT, FACS, and DSDT.
14467 Added ACPI table checksum validation during table disassembly in
14468 order to catch corrupted tables.
14471 ----------------------------------------
14472 22 October 2002. Summary of changes for version 20021022.
14474 1) ACPI CA Core Subsystem:
14476 Implemented a restriction on the Scope operator that the target
14477 must already exist in the namespace at the time the operator is
14478 encountered (during table load or method execution). In other
14479 words, forward references are not allowed and Scope() cannot
14480 create a new object. This changes the previous behavior where the
14481 interpreter would create the name if not found. This new behavior
14482 correctly enables the search-to-root algorithm during namespace
14483 lookup of the target name. Because of this upsearch, this fixes
14484 the known Compaq _SB_.OKEC problem and makes both the AML
14485 interpreter and iASL compiler compatible with other ACPI
14488 Completed a major overhaul of the internal ACPI object types for
14489 the ACPI Namespace and the associated operand objects. Many of
14490 these types had become obsolete with the introduction of the two-
14491 pass namespace load. This cleanup simplifies the code and makes
14492 the entire namespace load mechanism much clearer and easier to
14495 Improved debug output for tracking scope opening/closing to help
14496 diagnose scoping issues. The old scope name as well as the new
14497 scope name are displayed. Also improved error messages for
14498 problems with ASL Mutex objects and error messages for GPE
14501 Cleaned up the namespace dump code, removed obsolete code.
14503 All string output (for all namespace/object dumps) now uses the
14504 common ACPI string output procedure which handles escapes properly
14505 and does not emit non-printable characters.
14507 Fixed some issues with constants in the 64-bit version of the
14508 local C library (utclib.c)
14513 EC Driver: No longer attempts to acquire the Global Lock at
14517 3) iASL Compiler/Disassembler
14519 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14520 2 opcodes outside of a control method. This means that the
14521 "executable" operators (versus the "namespace" operators) cannot
14522 be used at the table level; they can only be used within a control
14525 Implemented the restriction on the Scope() operator where the
14526 target must already exist in the namespace at the time the
14527 operator is encountered (during ASL compilation). In other words,
14528 forward references are not allowed and Scope() cannot create a new
14529 object. This makes the iASL compiler compatible with other ACPI
14530 implementations and makes the Scope() implementation adhere to the
14531 ACPI specification.
14533 Fixed a problem where namepath optimization for the Alias operator
14534 was optimizing the wrong path (of the two namepaths.) This caused
14535 a "Missing alias link" error message.
14537 Fixed a problem where an "unknown reserved name" warning could be
14538 incorrectly generated for names like "_SB" when the trailing
14539 underscore is not used in the original ASL.
14541 Fixed a problem where the reserved name check did not handle
14542 NamePaths with multiple NameSegs correctly. The first nameseg of
14543 the NamePath was examined instead of the last NameSeg.
14546 ----------------------------------------
14548 02 October 2002. Summary of changes for this release.
14551 1) ACPI CA Core Subsystem version 20021002:
14553 Fixed a problem where a store/copy of a string to an existing
14554 string did not always set the string length properly in the String
14557 Fixed a reported problem with the ToString operator where the
14558 behavior was identical to the ToHexString operator instead of just
14559 simply converting a raw buffer to a string data type.
14561 Fixed a problem where CopyObject and the other "explicit"
14562 conversion operators were not updating the internal namespace node
14563 type as part of the store operation.
14565 Fixed a memory leak during implicit source operand conversion
14566 where the original object was not deleted if it was converted to a
14567 new object of a different type.
14569 Enhanced error messages for all problems associated with namespace
14570 lookups. Common procedure generates and prints the lookup name as
14571 well as the formatted status.
14573 Completed implementation of a new design for the Alias support
14574 within the namespace. The existing design did not handle the case
14575 where a new object was assigned to one of the two names due to the
14576 use of an explicit conversion operator, resulting in the two names
14577 pointing to two different objects. The new design simply points
14578 the Alias name to the original name node - not to the object.
14579 This results in a level of indirection that must be handled in the
14580 name resolution mechanism.
14582 Code and Data Size: Current core subsystem library sizes are shown
14583 below. These are the code and data sizes for the acpica.lib
14584 produced by the Microsoft Visual C++ 6.0 compiler, and these
14585 values do not include any ACPI driver or OSPM code. The debug
14586 version of the code includes the debug output trace mechanism and
14587 has a larger code and data size. Note that these values will vary
14588 depending on the efficiency of the compiler and the compiler
14589 options used during generation.
14592 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14593 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14595 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14596 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14601 Initialize thermal driver's timer before it is used. (Knut
14604 Allow handling negative celsius values. (Kochi Takayoshi)
14606 Fix thermal management and make trip points. R/W (Pavel Machek)
14608 Fix /proc/acpi/sleep. (P. Christeas)
14610 IA64 fixes. (David Mosberger)
14612 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14614 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14618 3) iASL Compiler/Disassembler
14620 Clarified some warning/error messages.
14623 ----------------------------------------
14624 18 September 2002. Summary of changes for this release.
14627 1) ACPI CA Core Subsystem version 20020918:
14629 Fixed a reported problem with reference chaining (via the Index()
14630 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14631 The definition of these operators includes the dereferencing of
14632 all chained references to return information on the base object.
14634 Fixed a problem with stores to indexed package elements - the
14635 existing code would not complete the store if an "implicit
14636 conversion" was not performed. In other words, if the existing
14637 object (package element) was to be replaced completely, the code
14638 didn't handle this case.
14640 Relaxed typechecking on the ASL "Scope" operator to allow the
14641 target name to refer to an object of type Integer, String, or
14642 Buffer, in addition to the scoping object types (Device,
14643 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14644 This allows existing AML code that has workarounds for a bug in
14645 Windows to function properly. A warning is issued, however. This
14646 affects both the AML interpreter and the iASL compiler. Below is
14647 an example of this type of ASL code:
14653 Fixed some reported problems with 64-bit integer support in the
14654 local implementation of C library functions (clib.c)
14659 Use ACPI fix map region instead of IOAPIC region, since it is
14660 undefined in non-SMP.
14662 Ensure that the SCI has the proper polarity and trigger, even on
14663 systems that do not have an interrupt override entry in the MADT.
14665 2.5 big driver reorganization (Pat Mochel)
14667 Use early table mapping code from acpitable.c (Andi Kleen)
14669 New blacklist entries (Andi Kleen)
14671 Blacklist improvements. Split blacklist code out into a separate
14672 file. Move checking the blacklist to very early. Previously, we
14673 would use ACPI tables, and then halfway through init, check the
14674 blacklist -- too late. Now, it's early enough to completely fall-
14678 3) iASL Compiler/Disassembler version 20020918:
14680 Fixed a problem where the typechecking code didn't know that an
14681 alias could point to a method. In other words, aliases were not
14682 being dereferenced during typechecking.
14685 ----------------------------------------
14686 29 August 2002. Summary of changes for this release.
14688 1) ACPI CA Core Subsystem Version 20020829:
14690 If the target of a Scope() operator already exists, it must be an
14691 object type that actually opens a scope -- such as a Device,
14692 Method, Scope, etc. This is a fatal runtime error. Similar error
14693 check has been added to the iASL compiler also.
14695 Tightened up the namespace load to disallow multiple names in the
14696 same scope. This previously was allowed if both objects were of
14697 the same type. (i.e., a lookup was the same as entering a new
14703 Ensure that the ACPI interrupt has the proper trigger and
14706 local_irq_disable is extraneous. (Matthew Wilcox)
14708 Make "acpi=off" actually do what it says, and not use the ACPI
14709 interpreter *or* the tables.
14711 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14715 3) iASL Compiler/Disassembler Version 20020829:
14717 Implemented namepath optimization for name declarations. For
14718 example, a declaration like "Method (\_SB_.ABCD)" would get
14719 optimized to "Method (ABCD)" if the declaration is within the
14720 \_SB_ scope. This optimization is in addition to the named
14721 reference path optimization first released in the previous
14722 version. This would seem to complete all possible optimizations
14723 for namepaths within the ASL/AML.
14725 If the target of a Scope() operator already exists, it must be an
14726 object type that actually opens a scope -- such as a Device,
14727 Method, Scope, etc.
14729 Implemented a check and warning for unreachable code in the same
14730 block below a Return() statement.
14732 Fixed a problem where the listing file was not generated if the
14733 compiler aborted if the maximum error count was exceeded (200).
14735 Fixed a problem where the typechecking of method return values was
14736 broken. This includes the check for a return value when the
14737 method is invoked as a TermArg (a return value is expected.)
14739 Fixed a reported problem where EOF conditions during a quoted
14740 string or comment caused a fault.
14743 ----------------------------------------
14744 15 August 2002. Summary of changes for this release.
14746 1) ACPI CA Core Subsystem Version 20020815:
14748 Fixed a reported problem where a Store to a method argument that
14749 contains a reference did not perform the indirect store correctly.
14750 This problem was created during the conversion to the new
14751 reference object model - the indirect store to a method argument
14752 code was not updated to reflect the new model.
14754 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14755 handle corner cases, and improve code legibility (Kochi Takayoshi)
14757 Fixed a problem with the pathname parsing for the carat (^)
14758 prefix. The heavy use of the carat operator by the new namepath
14759 optimization in the iASL compiler uncovered a problem with the AML
14760 interpreter handling of this prefix. In the case where one or
14761 more carats precede a single nameseg, the nameseg was treated as
14762 standalone and the search rule (to root) was inadvertently
14763 applied. This could cause both the iASL compiler and the
14764 interpreter to find the wrong object or to miss the error that
14765 should occur if the object does not exist at that exact pathname.
14767 Found and fixed the problem where the HP Pavilion DSDT would not
14768 load. This was a relatively minor tweak to the table loading code
14769 (a problem caused by the unexpected encounter with a method
14770 invocation not within a control method), but it does not solve the
14771 overall issue of the execution of AML code at the table level.
14772 This investigation is still ongoing.
14774 Code and Data Size: Current core subsystem library sizes are shown
14775 below. These are the code and data sizes for the acpica.lib
14776 produced by the Microsoft Visual C++ 6.0 compiler, and these
14777 values do not include any ACPI driver or OSPM code. The debug
14778 version of the code includes the debug output trace mechanism and
14779 has a larger code and data size. Note that these values will vary
14780 depending on the efficiency of the compiler and the compiler
14781 options used during generation.
14784 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14785 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14787 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14788 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14793 Remove redundant slab.h include (Brad Hards)
14795 Fix several bugs in thermal.c (Herbert Nachtnebel)
14797 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
14799 Change acpi_system_suspend to use updated irq functions (Pavel
14802 Export acpi_get_firmware_table (Matthew Wilcox)
14804 Use proper root proc entry for ACPI (Kochi Takayoshi)
14806 Fix early-boot table parsing (Bjorn Helgaas)
14809 3) iASL Compiler/Disassembler
14811 Reworked the compiler options to make them more consistent and to
14812 use two-letter options where appropriate. We were running out of
14813 sensible letters. This may break some makefiles, so check the
14814 current options list by invoking the compiler with no parameters.
14816 Completed the design and implementation of the ASL namepath
14817 optimization option for the compiler. This option optimizes all
14818 references to named objects to the shortest possible path. The
14819 first attempt tries to utilize a single nameseg (4 characters) and
14820 the "search-to-root" algorithm used by the interpreter. If that
14821 cannot be used (because either the name is not in the search path
14822 or there is a conflict with another object with the same name),
14823 the pathname is optimized using the carat prefix (usually a
14824 shorter string than specifying the entire path from the root.)
14826 Implemented support to obtain the DSDT from the Windows registry
14827 (when the disassembly option is specified with no input file).
14828 Added this code as the implementation for AcpiOsTableOverride in
14829 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
14830 utility) to scan memory for the DSDT to the AcpiOsTableOverride
14831 function in the DOS OSL to make the disassembler truly OS
14834 Implemented a new option to disassemble and compile in one step.
14835 When used without an input filename, this option will grab the
14836 DSDT from the local machine, disassemble it, and compile it in one
14839 Added a warning message for invalid escapes (a backslash followed
14840 by any character other than the allowable escapes). This catches
14841 the quoted string error "\_SB_" (which should be "\\_SB_" ).
14843 Also, there are numerous instances in the ACPI specification where
14846 Added a compiler option to disable all optimizations. This is
14847 basically the "compatibility mode" because by using this option,
14848 the AML code will come out exactly the same as other ASL
14851 Added error messages for incorrectly ordered dependent resource
14852 functions. This includes: missing EndDependentFn macro at end of
14853 dependent resource list, nested dependent function macros (both
14854 start and end), and missing StartDependentFn macro. These are
14855 common errors that should be caught at compile time.
14857 Implemented _OSI support for the disassembler and compiler. _OSI
14858 must be included in the namespace for proper disassembly (because
14859 the disassembler must know the number of arguments.)
14861 Added an "optimization" message type that is optional (off by
14862 default). This message is used for all optimizations - including
14863 constant folding, integer optimization, and namepath optimization.
14865 ----------------------------------------
14866 25 July 2002. Summary of changes for this release.
14869 1) ACPI CA Core Subsystem Version 20020725:
14871 The AML Disassembler has been enhanced to produce compilable ASL
14872 code and has been integrated into the iASL compiler (see below) as
14873 well as the single-step disassembly for the AML debugger and the
14874 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14875 resource templates and macros are fully supported. The
14876 disassembler has been tested on over 30 different AML files,
14877 producing identical AML when the resulting disassembled ASL file
14878 is recompiled with the same ASL compiler.
14880 Modified the Resource Manager to allow zero interrupts and zero
14881 dma channels during the GetCurrentResources call. This was
14882 causing problems on some platforms.
14884 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14885 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14888 Code and Data Size: Current core subsystem library sizes are shown
14889 below. These are the code and data sizes for the acpica.lib
14890 produced by the Microsoft Visual C++ 6.0 compiler, and these
14891 values do not include any ACPI driver or OSPM code. The debug
14892 version of the code includes the debug output trace mechanism and
14893 has a larger code and data size. Note that these values will vary
14894 depending on the efficiency of the compiler and the compiler
14895 options used during generation.
14898 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14899 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14901 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14902 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14907 Fixed a panic in the EC driver (Dominik Brodowski)
14909 Implemented checksum of the R/XSDT itself during Linux table scan
14915 The AML disassembler is integrated into the compiler. The "-d"
14916 option invokes the disassembler to completely disassemble an
14917 input AML file, producing as output a text ASL file with the
14918 extension ".dsl" (to avoid name collisions with existing .asl
14919 source files.) A future enhancement will allow the disassembler
14920 to obtain the BIOS DSDT from the registry under Windows.
14922 Fixed a problem with the VendorShort and VendorLong resource
14923 descriptors where an invalid AML sequence was created.
14925 Implemented a fix for BufferData term in the ASL parser. It was
14926 inadvertently defined twice, allowing invalid syntax to pass and
14927 causing reduction conflicts.
14929 Fixed a problem where the Ones opcode could get converted to a
14930 value of zero if "Ones" was used where a byte, word or dword value
14931 was expected. The 64-bit value is now truncated to the correct
14932 size with the correct value.
14936 ----------------------------------------
14937 02 July 2002. Summary of changes for this release.
14940 1) ACPI CA Core Subsystem Version 20020702:
14942 The Table Manager code has been restructured to add several new
14943 features. Tables that are not required by the core subsystem
14944 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14945 validated in any way and are returned from AcpiGetFirmwareTable if
14946 requested. The AcpiOsTableOverride interface is now called for
14947 each table that is loaded by the subsystem in order to allow the
14948 host to override any table it chooses. Previously, only the DSDT
14949 could be overridden. Added one new files, tbrsdt.c and
14952 Fixed a problem with the conversion of internal package objects to
14953 external objects (when a package is returned from a control
14954 method.) The return buffer length was set to zero instead of the
14955 proper length of the package object.
14957 Fixed a reported problem with the use of the RefOf and DeRefOf
14958 operators when passing reference arguments to control methods. A
14959 new type of Reference object is used internally for references
14960 produced by the RefOf operator.
14962 Added additional error messages in the Resource Manager to explain
14963 AE_BAD_DATA errors when they occur during resource parsing.
14965 Split the AcpiEnableSubsystem into two primitives to enable a
14966 finer granularity initialization sequence. These two calls should
14967 be called in this order: AcpiEnableSubsystem (flags),
14968 AcpiInitializeObjects (flags). The flags parameter remains the
14974 Updated the ACPI utilities module to understand the new style of
14975 fully resolved package objects that are now returned from the core
14976 subsystem. This eliminates errors of the form:
14978 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14979 acpi_utils-0430 [145] acpi_evaluate_reference:
14980 Invalid element in package (not a device reference)
14982 The method evaluation utility uses the new buffer allocation
14983 scheme instead of calling AcpiEvaluate Object twice.
14985 Added support for ECDT. This allows the use of the Embedded
14987 Controller before the namespace has been fully initialized, which
14988 is necessary for ACPI 2.0 support, and for some laptops to
14989 initialize properly. (Laptops using ECDT are still rare, so only
14990 limited testing was performed of the added functionality.)
14992 Fixed memory leaks in the EC driver.
14994 Eliminated a brittle code structure in acpi_bus_init().
14996 Eliminated the acpi_evaluate() helper function in utils.c. It is
14997 no longer needed since acpi_evaluate_object can optionally
14998 allocate memory for the return object.
15000 Implemented fix for keyboard hang when getting battery readings on
15001 some systems (Stephen White)
15003 PCI IRQ routing update (Dominik Brodowski)
15005 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15008 ----------------------------------------
15009 11 June 2002. Summary of changes for this release.
15012 1) ACPI CA Core Subsystem Version 20020611:
15014 Fixed a reported problem where constants such as Zero and One
15015 appearing within _PRT packages were not handled correctly within
15016 the resource manager code. Originally reported against the ASL
15017 compiler because the code generator now optimizes integers to
15018 their minimal AML representation (i.e. AML constants if possible.)
15019 The _PRT code now handles all AML constant opcodes correctly
15020 (Zero, One, Ones, Revision).
15022 Fixed a problem with the Concatenate operator in the AML
15023 interpreter where a buffer result object was incorrectly marked as
15024 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15026 All package sub-objects are now fully resolved before they are
15027 returned from the external ACPI interfaces. This means that name
15028 strings are resolved to object handles, and constant operators
15029 (Zero, One, Ones, Revision) are resolved to Integers.
15031 Implemented immediate resolution of the AML Constant opcodes
15032 (Zero, One, Ones, Revision) to Integer objects upon detection
15033 within the AML stream. This has simplified and reduced the
15034 generated code size of the subsystem by eliminating about 10
15035 switch statements for these constants (which previously were
15036 contained in Reference objects.) The complicating issues are that
15037 the Zero opcode is used as a "placeholder" for unspecified
15038 optional target operands and stores to constants are defined to be
15041 Code and Data Size: Current core subsystem library sizes are shown
15042 below. These are the code and data sizes for the acpica.lib
15043 produced by the Microsoft Visual C++ 6.0 compiler, and these
15044 values do not include any ACPI driver or OSPM code. The debug
15045 version of the code includes the debug output trace mechanism and
15046 has a larger code and data size. Note that these values will vary
15047 depending on the efficiency of the compiler and the compiler
15048 options used during generation.
15051 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15052 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15054 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15055 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15061 Added preliminary support for obtaining _TRA data for PCI root
15062 bridges (Bjorn Helgaas).
15065 3) iASL Compiler Version X2046:
15067 Fixed a problem where the "_DDN" reserved name was defined to be a
15068 control method with one argument. There are no arguments, and
15069 _DDN does not have to be a control method.
15071 Fixed a problem with the Linux version of the compiler where the
15072 source lines printed with error messages were the wrong lines.
15073 This turned out to be the "LF versus CR/LF" difference between
15074 Windows and Unix. This appears to be the longstanding issue
15075 concerning listing output and error messages.
15077 Fixed a problem with the Linux version of compiler where opcode
15078 names within error messages were wrong. This was caused by a
15079 slight difference in the output of the Flex tool on Linux versus
15082 Fixed a problem with the Linux compiler where the hex output files
15083 contained some garbage data caused by an internal buffer overrun.
15086 ----------------------------------------
15087 17 May 2002. Summary of changes for this release.
15090 1) ACPI CA Core Subsystem Version 20020517:
15092 Implemented a workaround to an BIOS bug discovered on the HP
15093 OmniBook where the FADT revision number and the table size are
15094 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15095 behavior is to fallback to using only the ACPI 1.0 fields of the
15096 FADT if the table is too small to be a ACPI 2.0 table as claimed
15097 by the revision number. Although this is a BIOS bug, this is a
15098 case where the workaround is simple enough and with no side
15099 effects, so it seemed prudent to add it. A warning message is
15102 Implemented minimum size checks for the fixed-length ACPI tables -
15103 - the FADT and FACS, as well as consistency checks between the
15104 revision number and the table size.
15106 Fixed a reported problem in the table override support where the
15107 new table pointer was incorrectly treated as a physical address
15108 instead of a logical address.
15110 Eliminated the use of the AE_AML_ERROR exception and replaced it
15111 with more descriptive codes.
15113 Fixed a problem where an exception would occur if an ASL Field was
15114 defined with no named Field Units underneath it (used by some
15117 Code and Data Size: Current core subsystem library sizes are shown
15118 below. These are the code and data sizes for the acpica.lib
15119 produced by the Microsoft Visual C++ 6.0 compiler, and these
15120 values do not include any ACPI driver or OSPM code. The debug
15121 version of the code includes the debug output trace mechanism and
15122 has a larger code and data size. Note that these values will vary
15123 depending on the efficiency of the compiler and the compiler
15124 options used during generation.
15127 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15128 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15130 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15131 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15137 Much work done on ACPI init (MADT and PCI IRQ routing support).
15138 (Paul D. and Dominik Brodowski)
15140 Fix PCI IRQ-related panic on boot (Sam Revitch)
15142 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15144 Fix "MHz" typo (Dominik Brodowski)
15146 Fix RTC year 2000 issue (Dominik Brodowski)
15148 Preclude multiple button proc entries (Eric Brunet)
15150 Moved arch-specific code out of include/platform/aclinux.h
15152 3) iASL Compiler Version X2044:
15154 Implemented error checking for the string used in the EISAID macro
15155 (Usually used in the definition of the _HID object.) The code now
15156 strictly enforces the PnP format - exactly 7 characters, 3
15157 uppercase letters and 4 hex digits.
15159 If a raw string is used in the definition of the _HID object
15160 (instead of the EISAID macro), the string must contain all
15161 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15164 Implemented checking for invalid use of ACPI reserved names for
15165 most of the name creation operators (Name, Device, Event, Mutex,
15166 OperationRegion, PowerResource, Processor, and ThermalZone.)
15167 Previously, this check was only performed for control methods.
15169 Implemented an additional check on the Name operator to emit an
15170 error if a reserved name that must be implemented in ASL as a
15171 control method is used. We know that a reserved name must be a
15172 method if it is defined with input arguments.
15174 The warning emitted when a namespace object reference is not found
15175 during the cross reference phase has been changed into an error.
15176 The "External" directive should be used for names defined in other
15180 4) Tools and Utilities
15182 The 16-bit tools (adump16 and aexec16) have been regenerated and
15185 Fixed a problem with the output of both acpidump and adump16 where
15186 the indentation of closing parentheses and brackets was not
15188 aligned properly with the parent block.
15191 ----------------------------------------
15192 03 May 2002. Summary of changes for this release.
15195 1) ACPI CA Core Subsystem Version 20020503:
15197 Added support a new OSL interface that allows the host operating
15199 system software to override the DSDT found in the firmware -
15200 AcpiOsTableOverride. With this interface, the OSL can examine the
15201 version of the firmware DSDT and replace it with a different one
15204 Added new external interfaces for accessing ACPI registers from
15205 device drivers and other system software - AcpiGetRegister and
15206 AcpiSetRegister. This was simply an externalization of the
15207 existing AcpiHwBitRegister interfaces.
15209 Fixed a regression introduced in the previous build where the
15210 ASL/AML CreateField operator always returned an error,
15211 "destination must be a NS Node".
15213 Extended the maximum time (before failure) to successfully enable
15214 ACPI mode to 3 seconds.
15216 Code and Data Size: Current core subsystem library sizes are shown
15217 below. These are the code and data sizes for the acpica.lib
15218 produced by the Microsoft Visual C++ 6.0 compiler, and these
15219 values do not include any ACPI driver or OSPM code. The debug
15220 version of the code includes the debug output trace mechanism and
15221 has a larger code and data size. Note that these values will vary
15222 depending on the efficiency of the compiler and the compiler
15223 options used during generation.
15226 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15227 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15229 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15230 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15235 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15236 free. While 3 out of 4 of our in-house systems work fine, the last
15237 one still hangs when testing the LAPIC timer.
15239 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15242 Added warning on boot for Presario 711FR.
15244 Sleep improvements (Pavel Machek)
15246 ACPI can now be built without CONFIG_PCI enabled.
15248 IA64: Fixed memory map functions (JI Lee)
15251 3) iASL Compiler Version X2043:
15253 Added support to allow the compiler to be integrated into the MS
15254 VC++ development environment for one-button compilation of single
15255 files or entire projects -- with error-to-source-line mapping.
15257 Implemented support for compile-time constant folding for the
15258 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15259 specification. This allows the ASL writer to use expressions
15260 instead of Integer/Buffer/String constants in terms that must
15261 evaluate to constants at compile time and will also simplify the
15262 emitted AML in any such sub-expressions that can be folded
15263 (evaluated at compile-time.) This increases the size of the
15264 compiler significantly because a portion of the ACPI CA AML
15265 interpreter is included within the compiler in order to pre-
15266 evaluate constant expressions.
15269 Fixed a problem with the "Unicode" ASL macro that caused the
15270 compiler to fault. (This macro is used in conjunction with the
15271 _STR reserved name.)
15273 Implemented an AML opcode optimization to use the Zero, One, and
15274 Ones opcodes where possible to further reduce the size of integer
15275 constants and thus reduce the overall size of the generated AML
15278 Implemented error checking for new reserved terms for ACPI version
15281 Implemented the -qr option to display the current list of ACPI
15282 reserved names known to the compiler.
15284 Implemented the -qc option to display the current list of ASL
15285 operators that are allowed within constant expressions and can
15286 therefore be folded at compile time if the operands are constants.
15291 Updated the Programmer's Reference for new interfaces, data types,
15292 and memory allocation model options.
15294 Updated the iASL Compiler User Reference to apply new format and
15295 add information about new features and options.
15297 ----------------------------------------
15298 19 April 2002. Summary of changes for this release.
15300 1) ACPI CA Core Subsystem Version 20020419:
15302 The source code base for the Core Subsystem has been completely
15303 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15304 versions. The Lint option files used are included in the
15305 /acpi/generate/lint directory.
15307 Implemented enhanced status/error checking across the entire
15308 Hardware manager subsystem. Any hardware errors (reported from
15309 the OSL) are now bubbled up and will abort a running control
15313 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15314 was stored only with control method nodes, causing a fault when
15315 non-control method code was executed during table loading. The
15316 solution implemented uses a global variable to indicate table
15317 width across the entire ACPI subsystem. Therefore, ACPI CA does
15318 not support mixed integer widths across different ACPI tables
15321 Fixed a problem where NULL extended fields (X fields) in an ACPI
15322 2.0 ACPI FADT caused the table load to fail. Although the
15323 existing ACPI specification is a bit fuzzy on this topic, the new
15324 behavior is to fall back on a ACPI 1.0 field if the corresponding
15325 ACPI 2.0 X field is zero (even though the table revision indicates
15326 a full ACPI 2.0 table.) The ACPI specification will be updated to
15327 clarify this issue.
15329 Fixed a problem with the SystemMemory operation region handler
15330 where memory was always accessed byte-wise even if the AML-
15331 specified access width was larger than a byte. This caused
15332 problems on systems with memory-mapped I/O. Memory is now
15333 accessed with the width specified. On systems that do not support
15334 non-aligned transfers, a check is made to guarantee proper address
15335 alignment before proceeding in order to avoid an AML-caused
15336 alignment fault within the kernel.
15339 Fixed a problem with the ExtendedIrq resource where only one byte
15340 of the 4-byte Irq field was extracted.
15342 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15343 function was out of date and required a rewrite.
15345 Code and Data Size: Current core subsystem library sizes are shown
15346 below. These are the code and data sizes for the acpica.lib
15347 produced by the Microsoft Visual C++ 6.0 compiler, and these
15348 values do not include any ACPI driver or OSPM code. The debug
15349 version of the code includes the debug output trace mechanism and
15350 has a larger code and data size. Note that these values will vary
15351 depending on the efficiency of the compiler and the compiler
15352 options used during generation.
15355 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15356 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15358 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15359 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15364 PCI IRQ routing fixes (Dominik Brodowski)
15367 3) iASL Compiler Version X2042:
15369 Implemented an additional compile-time error check for a field
15370 unit whose size + minimum access width would cause a run-time
15371 access beyond the end-of-region. Previously, only the field size
15372 itself was checked.
15374 The Core subsystem and iASL compiler now share a common parse
15375 object in preparation for compile-time evaluation of the type
15376 3/4/5 ASL operators.
15379 ----------------------------------------
15380 Summary of changes for this release: 03_29_02
15382 1) ACPI CA Core Subsystem Version 20020329:
15384 Implemented support for late evaluation of TermArg operands to
15385 Buffer and Package objects. This allows complex expressions to be
15386 used in the declarations of these object types.
15388 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15389 1.0, if the field was larger than 32 bits, it was returned as a
15390 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15391 the field is returned as a buffer only if the field is larger than
15392 64 bits. The TableRevision is now considered when making this
15393 conversion to avoid incompatibility with existing ASL code.
15395 Implemented logical addressing for AcpiOsGetRootPointer. This
15396 allows an RSDP with either a logical or physical address. With
15397 this support, the host OS can now override all ACPI tables with
15398 one logical RSDP. Includes implementation of "typed" pointer
15399 support to allow a common data type for both physical and logical
15400 pointers internally. This required a change to the
15401 AcpiOsGetRootPointer interface.
15403 Implemented the use of ACPI 2.0 Generic Address Structures for all
15404 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15405 mapped I/O for these ACPI features.
15407 Initialization now ignores not only non-required tables (All
15408 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15409 not validate the table headers of unrecognized tables.
15411 Fixed a problem where a notify handler could only be
15412 installed/removed on an object of type Device. All "notify"
15414 objects are now supported -- Devices, Processor, Power, and
15417 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15418 critical information is returned when this debug level is enabled.
15420 Code and Data Size: Current core subsystem library sizes are shown
15421 below. These are the code and data sizes for the acpica.lib
15422 produced by the Microsoft Visual C++ 6.0 compiler, and these
15423 values do not include any ACPI driver or OSPM code. The debug
15424 version of the code includes the debug output trace mechanism and
15425 has a larger code and data size. Note that these values will vary
15426 depending on the efficiency of the compiler and the compiler
15427 options used during generation.
15430 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15431 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15433 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15434 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15439 The processor driver (acpi_processor.c) now fully supports ACPI
15440 2.0-based processor performance control (e.g. Intel(R)
15441 SpeedStep(TM) technology) Note that older laptops that only have
15442 the Intel "applet" interface are not supported through this. The
15443 'limit' and 'performance' interface (/proc) are fully functional.
15444 [Note that basic policy for controlling performance state
15445 transitions will be included in the next version of ospmd.] The
15446 idle handler was modified to more aggressively use C2, and PIIX4
15447 errata handling underwent a complete overhaul (big thanks to
15448 Dominik Brodowski).
15450 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15451 based devices in the ACPI namespace are now dynamically bound
15452 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15453 This allows, among other things, ACPI to resolve bus numbers for
15454 subordinate PCI bridges.
15456 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15457 entries defined underneath PCI bridges.
15459 Added IBM 600E to bad bios list due to invalid _ADR value for
15460 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15462 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15463 (acpi.c, mpparse.c) -- stay tuned.
15465 Added back visual differentiation between fixed-feature and
15466 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15467 button/power/PWRF) to simplify button identification.
15469 We no longer use -Wno-unused when compiling debug. Please ignore
15470 any "_THIS_MODULE defined but not used" messages.
15472 Can now shut down the system using "magic sysrq" key.
15475 3) iASL Compiler version 2041:
15477 Fixed a problem where conversion errors for hex/octal/decimal
15478 constants were not reported.
15480 Implemented a fix for the General Register template Address field.
15481 This field was 8 bits when it should be 64.
15483 Fixed a problem where errors/warnings were no longer being emitted
15484 within the listing output file.
15486 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15487 exactly 4 characters, alphanumeric only.
15492 ----------------------------------------
15493 Summary of changes for this release: 03_08_02
15496 1) ACPI CA Core Subsystem Version 20020308:
15498 Fixed a problem with AML Fields where the use of the "AccessAny"
15499 keyword could cause an interpreter error due to attempting to read
15500 or write beyond the end of the parent Operation Region.
15502 Fixed a problem in the SystemMemory Operation Region handler where
15503 an attempt was made to map memory beyond the end of the region.
15504 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15505 errors on some Linux systems.
15507 Fixed a problem where the interpreter/namespace "search to root"
15508 algorithm was not functioning for some object types. Relaxed the
15509 internal restriction on the search to allow upsearches for all
15510 external object types as well as most internal types.
15515 We now use safe_halt() macro versus individual calls to sti | hlt.
15517 Writing to the processor limit interface should now work. "echo 1"
15518 will increase the limit, 2 will decrease, and 0 will reset to the
15525 Fixed segfault on Linux version.
15528 ----------------------------------------
15529 Summary of changes for this release: 02_25_02
15531 1) ACPI CA Core Subsystem:
15534 Fixed a problem where the GPE bit masks were not initialized
15535 properly, causing erratic GPE behavior.
15537 Implemented limited support for multiple calling conventions. The
15538 code can be generated with either the VPL (variable parameter
15539 list, or "C") convention, or the FPL (fixed parameter list, or
15540 "Pascal") convention. The core subsystem is about 3.4% smaller
15541 when generated with FPL.
15546 Re-add some /proc/acpi/event functionality that was lost during
15549 Resolved issue with /proc events for fixed-feature buttons showing
15550 up as the system device.
15552 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15554 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15556 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15558 Fixed limit interface & usage to fix bugs with passive cooling
15561 Restructured PRT support.
15564 ----------------------------------------
15565 Summary of changes for this label: 02_14_02
15568 1) ACPI CA Core Subsystem:
15570 Implemented support in AcpiLoadTable to allow loading of FACS and
15573 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15574 been removed. All 64-bit platforms should be migrated to the ACPI
15575 2.0 tables. The actbl71.h header has been removed from the source
15578 All C macros defined within the subsystem have been prefixed with
15579 "ACPI_" to avoid collision with other system include files.
15581 Removed the return value for the two AcpiOsPrint interfaces, since
15582 it is never used and causes lint warnings for ignoring the return
15585 Added error checking to all internal mutex acquire and release
15586 calls. Although a failure from one of these interfaces is
15587 probably a fatal system error, these checks will cause the
15588 immediate abort of the currently executing method or interface.
15590 Fixed a problem where the AcpiSetCurrentResources interface could
15591 fault. This was a side effect of the deployment of the new memory
15594 Fixed a couple of problems with the Global Lock support introduced
15595 in the last major build. The "common" (1.0/2.0) internal FACS was
15596 being overwritten with the FACS signature and clobbering the
15597 Global Lock pointer. Also, the actual firmware FACS was being
15598 unmapped after construction of the "common" FACS, preventing
15599 access to the actual Global Lock field within it. The "common"
15600 internal FACS is no longer installed as an actual ACPI table; it
15601 is used simply as a global.
15603 Code and Data Size: Current core subsystem library sizes are shown
15604 below. These are the code and data sizes for the acpica.lib
15605 produced by the Microsoft Visual C++ 6.0 compiler, and these
15606 values do not include any ACPI driver or OSPM code. The debug
15607 version of the code includes the debug output trace mechanism and
15608 has a larger code and data size. Note that these values will vary
15609 depending on the efficiency of the compiler and the compiler
15610 options used during generation.
15612 Previous Release (02_07_01)
15613 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15614 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15616 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15617 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15622 Updated Linux-specific code for core macro and OSL interface
15623 changes described above.
15625 Improved /proc/acpi/event. It now can be opened only once and has
15626 proper poll functionality.
15628 Fixed and restructured power management (acpi_bus).
15630 Only create /proc "view by type" when devices of that class exist.
15632 Fixed "charging/discharging" bug (and others) in acpi_battery.
15634 Improved thermal zone code.
15637 3) ASL Compiler, version X2039:
15640 Implemented the new compiler restriction on ASL String hex/octal
15641 escapes to non-null, ASCII values. An error results if an invalid
15642 value is used. (This will require an ACPI 2.0 specification
15645 AML object labels that are output to the optional C and ASM source
15646 are now prefixed with both the ACPI table signature and table ID
15647 to help guarantee uniqueness within a large BIOS project.
15650 ----------------------------------------
15651 Summary of changes for this label: 02_01_02
15653 1) ACPI CA Core Subsystem:
15655 ACPI 2.0 support is complete in the entire Core Subsystem and the
15656 ASL compiler. All new ACPI 2.0 operators are implemented and all
15657 other changes for ACPI 2.0 support are complete. With
15658 simultaneous code and data optimizations throughout the subsystem,
15659 ACPI 2.0 support has been implemented with almost no additional
15660 cost in terms of code and data size.
15662 Implemented a new mechanism for allocation of return buffers. If
15663 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15664 be allocated on behalf of the caller. Consolidated all return
15665 buffer validation and allocation to a common procedure. Return
15666 buffers will be allocated via the primary OSL allocation interface
15667 since it appears that a separate pool is not needed by most users.
15668 If a separate pool is required for these buffers, the caller can
15669 still use the original mechanism and pre-allocate the buffer(s).
15671 Implemented support for string operands within the DerefOf
15674 Restructured the Hardware and Event managers to be table driven,
15675 simplifying the source code and reducing the amount of generated
15678 Split the common read/write low-level ACPI register bitfield
15679 procedure into a separate read and write, simplifying the code
15682 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15683 used only a handful of times and didn't have enough critical mass
15684 for a separate interface. Replaced with a common calloc procedure
15687 Fixed a reported problem with the GPE number mapping mechanism
15688 that allows GPE1 numbers to be non-contiguous with GPE0.
15689 Reorganized the GPE information and shrunk a large array that was
15690 originally large enough to hold info for all possible GPEs (256)
15691 to simply large enough to hold all GPEs up to the largest GPE
15692 number on the machine.
15694 Fixed a reported problem with resource structure alignment on 64-
15697 Changed the AcpiEnableEvent and AcpiDisableEvent external
15698 interfaces to not require any flags for the common case of
15699 enabling/disabling a GPE.
15701 Implemented support to allow a "Notify" on a Processor object.
15703 Most TBDs in comments within the source code have been resolved
15707 Fixed a problem in the interpreter where a standalone parent
15708 prefix (^) was not handled correctly in the interpreter and
15711 Removed obsolete and unnecessary GPE save/restore code.
15713 Implemented Field support in the ASL Load operator. This allows a
15714 table to be loaded from a named field, in addition to loading a
15715 table directly from an Operation Region.
15717 Implemented timeout and handle support in the external Global Lock
15720 Fixed a problem in the AcpiDump utility where pathnames were no
15721 longer being generated correctly during the dump of named objects.
15723 Modified the AML debugger to give a full display of if/while
15724 predicates instead of just one AML opcode at a time. (The
15725 predicate can have several nested ASL statements.) The old method
15726 was confusing during single stepping.
15728 Code and Data Size: Current core subsystem library sizes are shown
15729 below. These are the code and data sizes for the acpica.lib
15730 produced by the Microsoft Visual C++ 6.0 compiler, and these
15731 values do not include any ACPI driver or OSPM code. The debug
15732 version of the code includes the debug output trace mechanism and
15733 has a larger code and data size. Note that these values will vary
15734 depending on the efficiency of the compiler and the compiler
15735 options used during generation.
15737 Previous Release (12_18_01)
15738 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15739 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15741 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15742 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15746 Implemented fix for PIIX reverse throttling errata (Processor
15749 Added new Limit interface (Processor and Thermal drivers)
15751 New thermal policy (Thermal driver)
15753 Many updates to /proc
15755 Battery "low" event support (Battery driver)
15757 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
15759 IA32 - IA64 initialization unification, no longer experimental
15761 Menuconfig options redesigned
15763 3) ASL Compiler, version X2037:
15765 Implemented several new output features to simplify integration of
15766 AML code into firmware: 1) Output the AML in C source code with
15767 labels for each named ASL object. The original ASL source code
15768 is interleaved as C comments. 2) Output the AML in ASM source code
15769 with labels and interleaved ASL source. 3) Output the AML in
15770 raw hex table form, in either C or ASM.
15772 Implemented support for optional string parameters to the
15773 LoadTable operator.
15775 Completed support for embedded escape sequences within string
15776 literals. The compiler now supports all single character escapes
15777 as well as the Octal and Hex escapes. Note: the insertion of a
15778 null byte into a string literal (via the hex/octal escape) causes
15779 the string to be immediately terminated. A warning is issued.
15781 Fixed a problem where incorrect AML was generated for the case
15782 where an ASL namepath consists of a single parent prefix (
15784 ) with no trailing name segments.
15786 The compiler has been successfully generated with a 64-bit C
15792 ----------------------------------------
15793 Summary of changes for this label: 12_18_01
15797 Enhanced blacklist with reason and severity fields. Any table's
15798 signature may now be used to identify a blacklisted system.
15800 Call _PIC control method to inform the firmware which interrupt
15801 model the OS is using. Turn on any disabled link devices.
15803 Cleaned up busmgr /proc error handling (Andreas Dilger)
15805 2) ACPI CA Core Subsystem:
15807 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
15810 Completed implementation of the ACPI 2.0 "Continue",
15811 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
15812 operators. All new ACPI 2.0 operators are now implemented in both
15813 the ASL compiler and the AML interpreter. The only remaining ACPI
15814 2.0 task is support for the String data type in the DerefOf
15815 operator. Fixed a problem with AcquireMutex where the status code
15816 was lost if the caller had to actually wait for the mutex.
15818 Increased the maximum ASL Field size from 64K bits to 4G bits.
15820 Completed implementation of the external Global Lock interfaces --
15821 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
15822 Handler parameters were added.
15824 Completed another pass at removing warnings and issues when
15825 compiling with 64-bit compilers. The code now compiles cleanly
15826 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
15827 add and subtract (diff) macros have changed considerably.
15830 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
15831 64-bit platforms, 32-bits on all others. This type is used
15832 wherever memory allocation and/or the C sizeof() operator is used,
15833 and affects the OSL memory allocation interfaces AcpiOsAllocate
15834 and AcpiOsCallocate.
15836 Implemented sticky user breakpoints in the AML debugger.
15838 Code and Data Size: Current core subsystem library sizes are shown
15839 below. These are the code and data sizes for the acpica.lib
15840 produced by the Microsoft Visual C++ 6.0 compiler, and these
15841 values do not include any ACPI driver or OSPM code. The debug
15842 version of the code includes the debug output trace mechanism and
15843 has a larger code and data size. Note that these values will vary
15844 depending on the efficiency of the compiler and the compiler
15845 options used during generation.
15847 Previous Release (12_05_01)
15848 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15849 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15851 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15852 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15854 3) ASL Compiler, version X2034:
15856 Now checks for (and generates an error if detected) the use of a
15857 Break or Continue statement without an enclosing While statement.
15860 Successfully generated the compiler with the Intel 64-bit C
15863 ----------------------------------------
15864 Summary of changes for this label: 12_05_01
15866 1) ACPI CA Core Subsystem:
15868 The ACPI 2.0 CopyObject operator is fully implemented. This
15869 operator creates a new copy of an object (and is also used to
15870 bypass the "implicit conversion" mechanism of the Store operator.)
15872 The ACPI 2.0 semantics for the SizeOf operator are fully
15873 implemented. The change is that performing a SizeOf on a
15874 reference object causes an automatic dereference of the object to
15875 tha actual value before the size is evaluated. This behavior was
15876 undefined in ACPI 1.0.
15878 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15879 have been implemented. The interrupt polarity and mode are now
15882 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15883 appearing in Package objects were not properly converted to
15884 integers when the internal Package was converted to an external
15885 object (via the AcpiEvaluateObject interface.)
15887 Fixed a problem with the namespace object deletion mechanism for
15888 objects created by control methods. There were two parts to this
15889 problem: 1) Objects created during the initialization phase method
15890 parse were not being deleted, and 2) The object owner ID mechanism
15891 to track objects was broken.
15893 Fixed a problem where the use of the ASL Scope operator within a
15894 control method would result in an invalid opcode exception.
15896 Fixed a problem introduced in the previous label where the buffer
15897 length required for the _PRT structure was not being returned
15900 Code and Data Size: Current core subsystem library sizes are shown
15901 below. These are the code and data sizes for the acpica.lib
15902 produced by the Microsoft Visual C++ 6.0 compiler, and these
15903 values do not include any ACPI driver or OSPM code. The debug
15904 version of the code includes the debug output trace mechanism and
15905 has a larger code and data size. Note that these values will vary
15906 depending on the efficiency of the compiler and the compiler
15907 options used during generation.
15909 Previous Release (11_20_01)
15910 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15911 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15914 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15915 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15919 Updated all files to apply cleanly against 2.4.16.
15921 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15922 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15923 version supports both static and dyanmic PRT entries, but dynamic
15924 entries are treated as if they were static (not yet
15925 reconfigurable). Architecture- specific code to use this data is
15926 absent on IA32 but should be available shortly.
15928 Changed the initialization sequence to start the ACPI interpreter
15929 (acpi_init) prior to initialization of the PCI driver (pci_init)
15930 in init/main.c. This ordering is required to support PRT and
15931 facilitate other (future) enhancement. A side effect is that the
15932 ACPI bus driver and certain device drivers can no longer be loaded
15935 Modified the 'make menuconfig' options to allow PCI Interrupt
15936 Routing support to be included without the ACPI Bus and other
15939 3) ASL Compiler, version X2033:
15941 Fixed some issues with the use of the new CopyObject and
15942 DataTableRegion operators. Both are fully functional.
15944 ----------------------------------------
15945 Summary of changes for this label: 11_20_01
15947 20 November 2001. Summary of changes for this release.
15949 1) ACPI CA Core Subsystem:
15951 Updated Index support to match ACPI 2.0 semantics. Storing a
15952 Integer, String, or Buffer to an Index of a Buffer will store only
15953 the least-significant byte of the source to the Indexed buffer
15954 byte. Multiple writes are not performed.
15956 Fixed a problem where the access type used in an AccessAs ASL
15957 operator was not recorded correctly into the field object.
15959 Fixed a problem where ASL Event objects were created in a
15960 signalled state. Events are now created in an unsignalled state.
15962 The internal object cache is now purged after table loading and
15963 initialization to reduce the use of dynamic kernel memory -- on
15964 the assumption that object use is greatest during the parse phase
15965 of the entire table (versus the run-time use of individual control
15968 ACPI 2.0 variable-length packages are now fully operational.
15970 Code and Data Size: Code and Data optimizations have permitted new
15971 feature development with an actual reduction in the library size.
15972 Current core subsystem library sizes are shown below. These are
15973 the code and data sizes for the acpica.lib produced by the
15974 Microsoft Visual C++ 6.0 compiler, and these values do not include
15975 any ACPI driver or OSPM code. The debug version of the code
15976 includes the debug output trace mechanism and has a larger code
15977 and data size. Note that these values will vary depending on the
15978 efficiency of the compiler and the compiler options used during
15981 Previous Release (11_09_01):
15982 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15983 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15986 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15987 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15991 Enhanced the ACPI boot-time initialization code to allow the use
15992 of Local APIC tables for processor enumeration on IA-32, and to
15993 pave the way for a fully MPS-free boot (on SMP systems) in the
15994 near future. This functionality replaces
15995 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15996 2.4.15-preX release. To enable this feature you must add
15997 "acpi_boot=on" to the kernel command line -- see the help entry
15998 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16001 Restructured the configuration options to allow boot-time table
16002 parsing support without inclusion of the ACPI Interpreter (and
16005 NOTE: This release does not include fixes for the reported events,
16006 power-down, and thermal passive cooling issues (coming soon).
16010 Added additional typechecking for Fields within restricted access
16011 Operation Regions. All fields within EC and CMOS regions must be
16012 declared with ByteAcc. All fields withing SMBus regions must be
16013 declared with the BufferAcc access type.
16015 Fixed a problem where the listing file output of control methods
16016 no longer interleaved the actual AML code with the ASL source
16022 ----------------------------------------
16023 Summary of changes for this label: 11_09_01
16025 1) ACPI CA Core Subsystem:
16027 Implemented ACPI 2.0-defined support for writes to fields with a
16028 Buffer, String, or Integer source operand that is smaller than the
16029 target field. In these cases, the source operand is zero-extended
16030 to fill the target field.
16032 Fixed a problem where a Field starting bit offset (within the
16033 parent operation region) was calculated incorrectly if the
16035 alignment of the field differed from the access width. This
16036 affected CreateWordField, CreateDwordField, CreateQwordField, and
16037 possibly other fields that use the "AccessAny" keyword.
16039 Fixed a problem introduced in the 11_02_01 release where indirect
16040 stores through method arguments did not operate correctly.
16044 Implemented boot-time ACPI table parsing support
16045 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16046 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16047 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16048 processors, memory, and interrupts during setup_arch(). Note that
16049 this patch does not include the required architecture-specific
16050 changes required to apply this information -- subsequent patches
16051 will be posted for both IA32 and IA64 to achieve this.
16053 Added low-level sleep support for IA32 platforms, courtesy of Pat
16054 Mochel. This allows IA32 systems to transition to/from various
16055 sleeping states (e.g. S1, S3), although the lack of a centralized
16056 driver model and power-manageable drivers will prevent its
16057 (successful) use on most systems.
16059 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16060 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16061 tables" option, etc.
16063 Increased the default timeout for the EC driver from 1ms to 10ms
16064 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16067 ----------------------------------------
16068 Summary of changes for this label: 11_02_01
16070 1) ACPI CA Core Subsystem:
16072 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16073 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16076 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16077 changes to support ACPI 2.0 Qword field access. Read/Write
16078 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16079 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16080 the value parameter for the address space handler interface is now
16081 an ACPI_INTEGER. OSL implementations of these interfaces must now
16082 handle the case where the Width parameter is 64.
16084 Index Fields: Fixed a problem where unaligned bit assembly and
16085 disassembly for IndexFields was not supported correctly.
16087 Index and Bank Fields: Nested Index and Bank Fields are now
16088 supported. During field access, a check is performed to ensure
16089 that the value written to an Index or Bank register is not out of
16090 the range of the register. The Index (or Bank) register is
16091 written before each access to the field data. Future support will
16092 include allowing individual IndexFields to be wider than the
16093 DataRegister width.
16095 Fields: Fixed a problem where the AML interpreter was incorrectly
16096 attempting to write beyond the end of a Field/OpRegion. This was
16097 a boundary case that occurred when a DWORD field was written to a
16098 BYTE access OpRegion, forcing multiple writes and causing the
16099 interpreter to write one datum too many.
16101 Fields: Fixed a problem with Field/OpRegion access where the
16102 starting bit address of a field was incorrectly calculated if the
16103 current access type was wider than a byte (WordAcc, DwordAcc, or
16106 Fields: Fixed a problem where forward references to individual
16107 FieldUnits (individual Field names within a Field definition) were
16108 not resolved during the AML table load.
16110 Fields: Fixed a problem where forward references from a Field
16111 definition to the parent Operation Region definition were not
16112 resolved during the AML table load.
16114 Fields: Duplicate FieldUnit names within a scope are now detected
16115 during AML table load.
16117 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16118 returned an incorrect name for the root node.
16120 Code and Data Size: Code and Data optimizations have permitted new
16121 feature development with an actual reduction in the library size.
16122 Current core subsystem library sizes are shown below. These are
16123 the code and data sizes for the acpica.lib produced by the
16124 Microsoft Visual C++ 6.0 compiler, and these values do not include
16125 any ACPI driver or OSPM code. The debug version of the code
16126 includes the debug output trace mechanism and has a larger code
16127 and data size. Note that these values will vary depending on the
16128 efficiency of the compiler and the compiler options used during
16131 Previous Release (10_18_01):
16132 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16133 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16136 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16137 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16141 Improved /proc processor output (Pavel Machek) Re-added
16142 MODULE_LICENSE("GPL") to all modules.
16144 3) ASL Compiler version X2030:
16146 Duplicate FieldUnit names within a scope are now detected and
16151 Programmer Reference updated to reflect OSL and address space
16152 handler interface changes described above.
16154 ----------------------------------------
16155 Summary of changes for this label: 10_18_01
16157 ACPI CA Core Subsystem:
16159 Fixed a problem with the internal object reference count mechanism
16160 that occasionally caused premature object deletion. This resolves
16161 all of the outstanding problem reports where an object is deleted
16162 in the middle of an interpreter evaluation. Although this problem
16163 only showed up in rather obscure cases, the solution to the
16164 problem involved an adjustment of all reference counts involving
16165 objects attached to namespace nodes.
16167 Fixed a problem with Field support in the interpreter where
16168 writing to an aligned field whose length is an exact multiple (2
16169 or greater) of the field access granularity would cause an attempt
16170 to write beyond the end of the field.
16172 The top level AML opcode execution functions within the
16173 interpreter have been renamed with a more meaningful and
16174 consistent naming convention. The modules exmonad.c and
16175 exdyadic.c were eliminated. New modules are exoparg1.c,
16176 exoparg2.c, exoparg3.c, and exoparg6.c.
16178 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16180 Fixed a problem where the AML debugger was causing some internal
16181 objects to not be deleted during subsystem termination.
16183 Fixed a problem with the external AcpiEvaluateObject interface
16184 where the subsystem would fault if the named object to be
16185 evaluated refered to a constant such as Zero, Ones, etc.
16187 Fixed a problem with IndexFields and BankFields where the
16188 subsystem would fault if the index, data, or bank registers were
16189 not defined in the same scope as the field itself.
16191 Added printf format string checking for compilers that support
16192 this feature. Corrected more than 50 instances of issues with
16193 format specifiers within invocations of ACPI_DEBUG_PRINT
16194 throughout the core subsystem code.
16196 The ASL "Revision" operator now returns the ACPI support level
16197 implemented in the core - the value "2" since the ACPI 2.0 support
16198 is more than 50% implemented.
16200 Enhanced the output of the AML debugger "dump namespace" command
16201 to output in a more human-readable form.
16203 Current core subsystem library code sizes are shown below. These
16205 are the code and data sizes for the acpica.lib produced by the
16206 Microsoft Visual C++ 6.0 compiler, and these values do not include
16207 any ACPI driver or OSPM code. The debug version of the code
16208 includes the full debug trace mechanism -- leading to a much
16210 larger code and data size. Note that these values will vary
16211 depending on the efficiency of the compiler and the compiler
16212 options used during generation.
16214 Previous Label (09_20_01):
16215 Non-Debug Version: 65K Code, 5K Data, 70K Total
16216 Debug Version: 138K Code, 58K Data, 196K Total
16220 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16221 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16225 Implemented a "Bad BIOS Blacklist" to track machines that have
16226 known ASL/AML problems.
16228 Enhanced the /proc interface for the thermal zone driver and added
16229 support for _HOT (the critical suspend trip point). The 'info'
16230 file now includes threshold/policy information, and allows setting
16231 of _SCP (cooling preference) and _TZP (polling frequency) values
16232 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16233 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16234 preference to the passive/quiet mode (if supported by the ASL).
16236 Implemented a workaround for a gcc bug that resuted in an OOPs
16237 when loading the control method battery driver.
16239 ----------------------------------------
16240 Summary of changes for this label: 09_20_01
16242 ACPI CA Core Subsystem:
16244 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16245 modified to allow individual GPE levels to be flagged as wake-
16246 enabled (i.e., these GPEs are to remain enabled when the platform
16249 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16250 support wake-enabled GPEs. This means that upon entering the
16251 sleep state, all GPEs that are not wake-enabled are disabled.
16252 When leaving the sleep state, these GPEs are reenabled.
16254 A local double-precision divide/modulo module has been added to
16255 enhance portability to OS kernels where a 64-bit math library is
16256 not available. The new module is "utmath.c".
16258 Several optimizations have been made to reduce the use of CPU
16259 stack. Originally over 2K, the maximum stack usage is now below
16260 2K at 1860 bytes (1.82k)
16262 Fixed a problem with the AcpiGetFirmwareTable interface where the
16263 root table pointer was not mapped into a logical address properly.
16265 Fixed a problem where a NULL pointer was being dereferenced in the
16266 interpreter code for the ASL Notify operator.
16268 Fixed a problem where the use of the ASL Revision operator
16269 returned an error. This operator now returns the current version
16270 of the ACPI CA core subsystem.
16272 Fixed a problem where objects passed as control method parameters
16273 to AcpiEvaluateObject were always deleted at method termination.
16274 However, these objects may end up being stored into the namespace
16275 by the called method. The object reference count mechanism was
16276 applied to these objects instead of a force delete.
16278 Fixed a problem where static strings or buffers (contained in the
16279 AML code) that are declared as package elements within the ASL
16280 code could cause a fault because the interpreter would attempt to
16281 delete them. These objects are now marked with the "static
16282 object" flag to prevent any attempt to delete them.
16284 Implemented an interpreter optimization to use operands directly
16285 from the state object instead of extracting the operands to local
16286 variables. This reduces stack use and code size, and improves
16289 The module exxface.c was eliminated as it was an unnecessary extra
16292 Current core subsystem library code sizes are shown below. These
16293 are the code and data sizes for the acpica.lib produced by the
16294 Microsoft Visual C++ 6.0 compiler, and these values do not include
16295 any ACPI driver or OSPM code. The debug version of the code
16296 includes the full debug trace mechanism -- leading to a much
16297 larger code and data size. Note that these values will vary
16298 depending on the efficiency of the compiler and the compiler
16299 options used during generation.
16301 Non-Debug Version: 65K Code, 5K Data, 70K Total
16302 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16303 Total (Previously 195K)
16307 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16308 Integer objects are now 64 bits wide
16310 All Acpi data types and structures are now in lower case. Only
16311 Acpi macros are upper case for differentiation.
16315 Changes to the external interfaces as described above.
16317 ----------------------------------------
16318 Summary of changes for this label: 08_31_01
16320 ACPI CA Core Subsystem:
16322 A bug with interpreter implementation of the ASL Divide operator
16323 was found and fixed. The implicit function return value (not the
16324 explicit store operands) was returning the remainder instead of
16325 the quotient. This was a longstanding bug and it fixes several
16326 known outstanding issues on various platforms.
16328 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16329 been further optimized for size. There are 700 invocations of the
16330 DEBUG_PRINT macro alone, so each optimization reduces the size of
16331 the debug version of the subsystem significantly.
16333 A stack trace mechanism has been implemented. The maximum stack
16334 usage is about 2K on 32-bit platforms. The debugger command "stat
16335 stack" will display the current maximum stack usage.
16337 All public symbols and global variables within the subsystem are
16338 now prefixed with the string "Acpi". This keeps all of the
16339 symbols grouped together in a kernel map, and avoids conflicts
16340 with other kernel subsystems.
16342 Most of the internal fixed lookup tables have been moved into the
16343 code segment via the const operator.
16345 Several enhancements have been made to the interpreter to both
16346 reduce the code size and improve performance.
16348 Current core subsystem library code sizes are shown below. These
16349 are the code and data sizes for the acpica.lib produced by the
16350 Microsoft Visual C++ 6.0 compiler, and these values do not include
16351 any ACPI driver or OSPM code. The debug version of the code
16352 includes the full debug trace mechanism which contains over 700
16353 invocations of the DEBUG_PRINT macro, 500 function entry macro
16354 invocations, and over 900 function exit macro invocations --
16355 leading to a much larger code and data size. Note that these
16356 values will vary depending on the efficiency of the compiler and
16357 the compiler options used during generation.
16359 Non-Debug Version: 64K Code, 5K Data, 69K Total
16360 Debug Version: 137K Code, 58K Data, 195K Total
16364 Implemented wbinvd() macro, pending a kernel-wide definition.
16366 Fixed /proc/acpi/event to handle poll() and short reads.
16368 ASL Compiler, version X2026:
16370 Fixed a problem introduced in the previous label where the AML
16372 code emitted for package objects produced packages with zero
16375 ----------------------------------------
16376 Summary of changes for this label: 08_16_01
16378 ACPI CA Core Subsystem:
16380 The following ACPI 2.0 ASL operators have been implemented in the
16381 AML interpreter (These are already supported by the Intel ASL
16382 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16383 ToBuffer. Support for 64-bit AML constants is implemented in the
16384 AML parser, debugger, and disassembler.
16386 The internal memory tracking mechanism (leak detection code) has
16387 been upgraded to reduce the memory overhead (a separate tracking
16388 block is no longer allocated for each memory allocation), and now
16389 supports all of the internal object caches.
16391 The data structures and code for the internal object caches have
16392 been coelesced and optimized so that there is a single cache and
16393 memory list data structure and a single group of functions that
16394 implement generic cache management. This has reduced the code
16395 size in both the debug and release versions of the subsystem.
16397 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16398 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16399 different, because it generates a single call to an internal
16400 function. This results in a savings of about 90 bytes per
16401 invocation, resulting in an overall code and data savings of about
16402 16% in the debug version of the subsystem.
16406 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16409 Integrated low-level sleep code by Patrick Mochel.
16411 Further tweaked source code Linuxization.
16417 Support for ACPI 2.0 variable length packages is fixed/completed.
16419 Fixed a problem where the optional length parameter for the ACPI
16420 2.0 ToString operator.
16422 Fixed multiple extraneous error messages when a syntax error is
16423 detected within the declaration line of a control method.
16425 ----------------------------------------
16426 Summary of changes for this label: 07_17_01
16428 ACPI CA Core Subsystem:
16430 Added a new interface named AcpiGetFirmwareTable to obtain any
16431 ACPI table via the ACPI signature. The interface can be called at
16432 any time during kernel initialization, even before the kernel
16433 virtual memory manager is initialized and paging is enabled. This
16434 allows kernel subsystems to obtain ACPI tables very early, even
16435 before the ACPI CA subsystem is initialized.
16437 Fixed a problem where Fields defined with the AnyAcc attribute
16438 could be resolved to the incorrect address under the following
16439 conditions: 1) the field width is larger than 8 bits and 2) the
16440 parent operation region is not defined on a DWORD boundary.
16442 Fixed a problem where the interpreter is not being locked during
16443 namespace initialization (during execution of the _INI control
16444 methods), causing an error when an attempt is made to release it
16447 ACPI 2.0 support in the AML Interpreter has begun and will be
16448 ongoing throughout the rest of this year. In this label, The Mod
16449 operator is implemented.
16451 Added a new data type to contain full PCI addresses named
16452 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16453 and Function values.
16457 Enhanced the Linux version of the source code to change most
16458 capitalized ACPI type names to lowercase. For example, all
16459 instances of ACPI_STATUS are changed to acpi_status. This will
16460 result in a large diff, but the change is strictly cosmetic and
16461 aligns the CA code closer to the Linux coding standard.
16465 The interfaces to the PCI configuration space have been changed to
16466 add the PCI Segment number and to split the single 32-bit combined
16467 DeviceFunction field into two 16-bit fields. This was
16468 accomplished by moving the four values that define an address in
16469 PCI configuration space (segment, bus, device, and function) to
16470 the new ACPI_PCI_ID structure.
16472 The changes to the PCI configuration space interfaces led to a
16473 reexamination of the complete set of address space access
16474 interfaces for PCI, I/O, and Memory. The previously existing 18
16475 interfaces have proven difficult to maintain (any small change
16476 must be propagated across at least 6 interfaces) and do not easily
16477 allow for future expansion to 64 bits if necessary. Also, on some
16478 systems, it would not be appropriate to demultiplex the access
16479 width (8, 16, 32,or 64) before calling the OSL if the
16480 corresponding native OS interfaces contain a similar access width
16481 parameter. For these reasons, the 18 address space interfaces
16482 have been replaced by these 6 new ones:
16484 AcpiOsReadPciConfiguration
16485 AcpiOsWritePciConfiguration
16491 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16492 to perform the platform and/or OS-specific actions necessary to
16493 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16494 interface will simply call down to the CA core to perform the low-
16495 memory search for the table. On IA-64, the RSDP is obtained from
16496 EFI. Migrating this interface to the OSL allows the CA core to
16498 remain OS and platform independent.
16500 Added a new interface named AcpiOsSignal to provide a generic
16501 "function code and pointer" interface for various miscellaneous
16502 signals and notifications that must be made to the host OS. The
16503 first such signals are intended to support the ASL Fatal and
16504 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16505 interface has been obsoleted.
16507 The definition of the AcpiFormatException interface has been
16508 changed to simplify its use. The caller no longer must supply a
16509 buffer to the call; A pointer to a const string is now returned
16510 directly. This allows the call to be easily used in printf
16511 statements, etc. since the caller does not have to manage a local
16515 ASL Compiler, Version X2025:
16517 The ACPI 2.0 Switch/Case/Default operators have been implemented
16518 and are fully functional. They will work with all ACPI 1.0
16519 interpreters, since the operators are simply translated to If/Else
16522 The ACPI 2.0 ElseIf operator is implemented and will also work
16523 with 1.0 interpreters, for the same reason.
16525 Implemented support for ACPI 2.0 variable-length packages. These
16526 packages have a separate opcode, and their size is determined by
16527 the interpreter at run-time.
16529 Documentation The ACPI CA Programmer Reference has been updated to
16530 reflect the new interfaces and changes to existing interfaces.
16532 ------------------------------------------
16533 Summary of changes for this label: 06_15_01
16535 ACPI CA Core Subsystem:
16537 Fixed a problem where a DWORD-accessed field within a Buffer
16538 object would get its byte address inadvertently rounded down to
16539 the nearest DWORD. Buffers are always Byte-accessible.
16541 ASL Compiler, version X2024:
16543 Fixed a problem where the Switch() operator would either fault or
16544 hang the compiler. Note however, that the AML code for this ACPI
16545 2.0 operator is not yet implemented.
16547 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16550 Implementation of the CreateField operator automatically converts
16551 a reference to a named field within a resource descriptor from a
16552 byte offset to a bit offset if required.
16554 Added some missing named fields from the resource descriptor
16555 support. These are the names that are automatically created by the
16556 compiler to reference fields within a descriptor. They are only
16557 valid at compile time and are not passed through to the AML
16560 Resource descriptor named fields are now typed as Integers and
16561 subject to compile-time typechecking when used in expressions.
16563 ------------------------------------------
16564 Summary of changes for this label: 05_18_01
16566 ACPI CA Core Subsystem:
16568 Fixed a couple of problems in the Field support code where bits
16569 from adjacent fields could be returned along with the proper field
16570 bits. Restructured the field support code to improve performance,
16571 readability and maintainability.
16573 New DEBUG_PRINTP macro automatically inserts the procedure name
16574 into the output, saving hundreds of copies of procedure name
16575 strings within the source, shrinking the memory footprint of the
16576 debug version of the core subsystem.
16578 Source Code Structure:
16580 The source code directory tree was restructured to reflect the
16581 current organization of the component architecture. Some files
16582 and directories have been moved and/or renamed.
16586 Fixed leaking kacpidpc processes.
16588 Fixed queueing event data even when /proc/acpi/event is not
16591 ASL Compiler, version X2020:
16593 Memory allocation performance enhancement - over 24X compile time
16594 improvement on large ASL files. Parse nodes and namestring
16595 buffers are now allocated from a large internal compiler buffer.
16597 The temporary .SRC file is deleted unless the "-s" option is
16600 The "-d" debug output option now sends all output to the .DBG file
16601 instead of the console.
16603 "External" second parameter is now optional
16605 "ElseIf" syntax now properly allows the predicate
16607 Last operand to "Load" now recognized as a Target operand
16609 Debug object can now be used anywhere as a normal object.
16611 ResourceTemplate now returns an object of type BUFFER
16613 EISAID now returns an object of type INTEGER
16615 "Index" now works with a STRING operand
16617 "LoadTable" now accepts optional parameters
16619 "ToString" length parameter is now optional
16621 "Interrupt (ResourceType," parse error fixed.
16623 "Register" with a user-defined region space parse error fixed
16625 Escaped backslash at the end of a string ("\\") scan/parse error
16628 "Revision" is now an object of type INTEGER.
16632 ------------------------------------------
16633 Summary of changes for this label: 05_02_01
16637 /proc/acpi/event now blocks properly.
16639 Removed /proc/sys/acpi. You can still dump your DSDT from
16642 ACPI CA Core Subsystem:
16644 Fixed a problem introduced in the previous label where some of the
16645 "small" resource descriptor types were not recognized.
16647 Improved error messages for the case where an ASL Field is outside
16648 the range of the parent operation region.
16650 ASL Compiler, version X2018:
16653 Added error detection for ASL Fields that extend beyond the length
16654 of the parent operation region (only if the length of the region
16655 is known at compile time.) This includes fields that have a
16656 minimum access width that is smaller than the parent region, and
16657 individual field units that are partially or entirely beyond the
16658 extent of the parent.
16662 ------------------------------------------
16663 Summary of changes for this label: 04_27_01
16665 ACPI CA Core Subsystem:
16667 Fixed a problem where the namespace mutex could be released at the
16668 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16670 Added optional thread ID output for debug traces, to simplify
16671 debugging of multiple threads. Added context switch notification
16672 when the debug code realizes that a different thread is now
16673 executing ACPI code.
16675 Some additional external data types have been prefixed with the
16676 string "ACPI_" for consistency. This may effect existing code.
16677 The data types affected are the external callback typedefs - e.g.,
16679 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16683 Fixed an issue with the OSL semaphore implementation where a
16684 thread was waking up with an error from receiving a SIGCHLD
16687 Linux version of ACPI CA now uses the system C library for string
16688 manipulation routines instead of a local implementation.
16690 Cleaned up comments and removed TBDs.
16692 ASL Compiler, version X2017:
16694 Enhanced error detection and reporting for all file I/O
16699 Programmer Reference updated to version 1.06.
16703 ------------------------------------------
16704 Summary of changes for this label: 04_13_01
16706 ACPI CA Core Subsystem:
16708 Restructured support for BufferFields and RegionFields.
16709 BankFields support is now fully operational. All known 32-bit
16710 limitations on field sizes have been removed. Both BufferFields
16711 and (Operation) RegionFields are now supported by the same field
16714 Resource support now supports QWORD address and IO resources. The
16715 16/32/64 bit address structures and the Extended IRQ structure
16716 have been changed to properly handle Source Resource strings.
16718 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16719 condition internally and must never be returned by AcpiOsThreadId.
16720 This reserved value was changed from 0 since Unix systems allow a
16725 Driver code reorganized to enhance portability
16727 Added a kernel configuration option to control ACPI_DEBUG
16729 Fixed the EC driver to honor _GLK.
16731 ASL Compiler, version X2016:
16733 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16734 address space was set to 0, not 0x7f as it should be.
16736 ------------------------------------------
16737 Summary of changes for this label: 03_13_01
16739 ACPI CA Core Subsystem:
16741 During ACPI initialization, the _SB_._INI method is now run if
16744 Notify handler fix - notifies are deferred until the parent method
16745 completes execution. This fixes the "mutex already acquired"
16746 issue seen occasionally.
16748 Part of the "implicit conversion" rules in ACPI 2.0 have been
16749 found to cause compatibility problems with existing ASL/AML. The
16750 convert "result-to-target-type" implementation has been removed
16751 for stores to method Args and Locals. Source operand conversion
16752 is still fully implemented. Possible changes to ACPI 2.0
16753 specification pending.
16755 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
16758 Fix for compiler warnings for 64-bit compiles.
16762 /proc output aligned for easier parsing.
16764 Release-version compile problem fixed.
16766 New kernel configuration options documented in Configure.help.
16768 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
16773 Power resource driver integrated with bus manager.
16775 Fixed kernel fault during active cooling for thermal zones.
16779 The source code tree has been restructured.
16783 ------------------------------------------
16784 Summary of changes for this label: 03_02_01
16786 Linux OS Services Layer (OSL):
16788 Major revision of all Linux-specific code.
16790 Modularized all ACPI-specific drivers.
16792 Added new thermal zone and power resource drivers.
16794 Revamped /proc interface (new functionality is under /proc/acpi).
16796 New kernel configuration options.
16798 Linux known issues:
16800 New kernel configuration options not documented in Configure.help
16804 Module dependencies not currently implemented. If used, they
16805 should be loaded in this order: busmgr, power, ec, system,
16806 processor, battery, ac_adapter, button, thermal.
16808 Modules will not load if CONFIG_MODVERSION is set.
16810 IBM 600E - entering S5 may reboot instead of shutting down.
16812 IBM 600E - Sleep button may generate "Invalid <NULL> context"
16815 Some systems may fail with "execution mutex already acquired"
16818 ACPI CA Core Subsystem:
16820 Added a new OSL Interface, AcpiOsGetThreadId. This was required
16821 for the deadlock detection code. Defined to return a non-zero, 32-
16822 bit thread ID for the currently executing thread. May be a non-
16823 zero constant integer on single-thread systems.
16825 Implemented deadlock detection for internal subsystem mutexes. We
16826 may add conditional compilation for this code (debug only) later.
16828 ASL/AML Mutex object semantics are now fully supported. This
16829 includes multiple acquires/releases by owner and support for the
16831 Mutex SyncLevel parameter.
16833 A new "Force Release" mechanism automatically frees all ASL
16834 Mutexes that have been acquired but not released when a thread
16835 exits the interpreter. This forces conformance to the ACPI spec
16836 ("All mutexes must be released when an invocation exits") and
16837 prevents deadlocked ASL threads. This mechanism can be expanded
16838 (later) to monitor other resource acquisitions if OEM ASL code
16839 continues to misbehave (which it will).
16841 Several new ACPI exception codes have been added for the Mutex
16844 Recursive method calls are now allowed and supported (the ACPI
16845 spec does in fact allow recursive method calls.) The number of
16846 recursive calls is subject to the restrictions imposed by the
16847 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
16850 Implemented support for the SyncLevel parameter for control
16851 methods (ACPI 2.0 feature)
16853 Fixed a deadlock problem when multiple threads attempted to use
16856 Fixed a problem where the string length of a String package
16857 element was not always set in a package returned from
16858 AcpiEvaluateObject.
16860 Fixed a problem where the length of a String package element was
16861 not always included in the length of the overall package returned
16862 from AcpiEvaluateObject.
16864 Added external interfaces (Acpi*) to the ACPI debug memory
16865 manager. This manager keeps a list of all outstanding
16866 allocations, and can therefore detect memory leaks and attempts to
16867 free memory blocks more than once. Useful for code such as the
16868 power manager, etc. May not be appropriate for device drivers.
16869 Performance with the debug code enabled is slow.
16871 The ACPI Global Lock is now an optional hardware element.
16873 ASL Compiler Version X2015:
16875 Integrated changes to allow the compiler to be generated on
16876 multiple platforms.
16878 Linux makefile added to generate the compiler on Linux
16882 All platform-specific headers have been moved to their own
16883 subdirectory, Include/Platform.
16885 New source file added, Interpreter/ammutex.c
16887 New header file, Include/acstruct.h
16891 The programmer reference has been updated for the following new
16892 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16894 ------------------------------------------
16895 Summary of changes for this label: 02_08_01
16897 Core ACPI CA Subsystem: Fixed a problem where an error was
16898 incorrectly returned if the return resource buffer was larger than
16899 the actual data (in the resource interfaces).
16901 References to named objects within packages are resolved to the
16903 full pathname string before packages are returned directly (via
16904 the AcpiEvaluateObject interface) or indirectly via the resource
16907 Linux OS Services Layer (OSL):
16909 Improved /proc battery interface.
16912 Added C-state debugging output and other miscellaneous fixes.
16914 ASL Compiler Version X2014:
16916 All defined method arguments can now be used as local variables,
16917 including the ones that are not actually passed in as parameters.
16918 The compiler tracks initialization of the arguments and issues an
16919 exception if they are used without prior assignment (just like
16922 The -o option now specifies a filename prefix that is used for all
16923 output files, including the AML output file. Otherwise, the
16924 default behavior is as follows: 1) the AML goes to the file
16925 specified in the DSDT. 2) all other output files use the input
16926 source filename as the base.
16928 ------------------------------------------
16929 Summary of changes for this label: 01_25_01
16931 Core ACPI CA Subsystem: Restructured the implementation of object
16932 store support within the interpreter. This includes support for
16933 the Store operator as well as any ASL operators that include a
16936 Partially implemented support for Implicit Result-to-Target
16937 conversion. This is when a result object is converted on the fly
16938 to the type of an existing target object. Completion of this
16939 support is pending further analysis of the ACPI specification
16940 concerning this matter.
16942 CPU-specific code has been removed from the subsystem (hardware
16945 New Power Management Timer functions added
16947 Linux OS Services Layer (OSL): Moved system state transition code
16948 to the core, fixed it, and modified Linux OSL accordingly.
16950 Fixed C2 and C3 latency calculations.
16953 We no longer use the compilation date for the version message on
16954 initialization, but retrieve the version from AcpiGetSystemInfo().
16956 Incorporated for fix Sony VAIO machines.
16958 Documentation: The Programmer Reference has been updated and
16962 ASL Compiler: Version X2013: Fixed a problem where the line
16963 numbering and error reporting could get out of sync in the
16964 presence of multiple include files.
16966 ------------------------------------------
16967 Summary of changes for this label: 01_15_01
16969 Core ACPI CA Subsystem:
16971 Implemented support for type conversions in the execution of the
16972 ASL Concatenate operator (The second operand is converted to
16973 match the type of the first operand before concatenation.)
16975 Support for implicit source operand conversion is partially
16976 implemented. The ASL source operand types Integer, Buffer, and
16977 String are freely interchangeable for most ASL operators and are
16978 converted by the interpreter on the fly as required. Implicit
16979 Target operand conversion (where the result is converted to the
16980 target type before storing) is not yet implemented.
16982 Support for 32-bit and 64-bit BCD integers is implemented.
16984 Problem fixed where a field read on an aligned field could cause a
16985 read past the end of the field.
16987 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16988 does not return a value, but the caller expects one. (The ASL
16989 compiler flags this as a warning.)
16994 1. Static typechecking of all operands is implemented. This
16995 prevents the use of invalid objects (such as using a Package where
16996 an Integer is required) at compile time instead of at interpreter
16998 2. The ASL source line is printed with ALL errors and warnings.
16999 3. Bug fix for source EOF without final linefeed.
17000 4. Debug option is split into a parse trace and a namespace trace.
17001 5. Namespace output option (-n) includes initial values for
17002 integers and strings.
17003 6. Parse-only option added for quick syntax checking.
17004 7. Compiler checks for duplicate ACPI name declarations
17007 1. Relaxed typechecking to allow interchangeability between
17008 strings, integers, and buffers. These types are now converted by
17009 the interpreter at runtime.
17010 2. Compiler reports time taken by each internal subsystem in the
17014 ------------------------------------------
17015 Summary of changes for this label: 12_14_00
17019 This is the first official release of the compiler. Since the
17020 compiler requires elements of the Core Subsystem, this label
17021 synchronizes everything.
17023 ------------------------------------------
17024 Summary of changes for this label: 12_08_00
17027 Fixed a problem where named references within the ASL definition
17028 of both OperationRegions and CreateXXXFields did not work
17029 properly. The symptom was an AE_AML_OPERAND_TYPE during
17030 initialization of the region/field. This is similar (but not
17031 related internally) to the problem that was fixed in the last
17034 Implemented both 32-bit and 64-bit support for the BCD ASL
17035 functions ToBCD and FromBCD.
17037 Updated all legal headers to include "2000" in the copyright
17040 ------------------------------------------
17041 Summary of changes for this label: 12_01_00
17043 Fixed a problem where method invocations within the ASL definition
17044 of both OperationRegions and CreateXXXFields did not work
17045 properly. The symptom was an AE_AML_OPERAND_TYPE during
17046 initialization of the region/field:
17048 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17049 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17052 Fixed a problem where operators with more than one nested
17053 subexpression would fail. The symptoms were varied, by mostly
17054 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17055 problem that has gone unnoticed until now.
17057 Subtract (Add (1,2), Multiply (3,4))
17059 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17060 previous build (The prefix part of a relative path was handled
17063 Fixed a problem where Operation Region initialization failed if
17064 the operation region name was a "namepath" instead of a simple
17065 "nameseg". Symptom was an AE_NO_OPERAND error.
17067 Fixed a problem where an assignment to a local variable via the
17068 indirect RefOf mechanism only worked for the first such
17069 assignment. Subsequent assignments were ignored.
17071 ------------------------------------------
17072 Summary of changes for this label: 11_15_00
17074 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17075 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17076 the AML interpreter does NOT have support for the new 2.0 ASL
17077 grammar terms at this time.
17079 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17082 All physical memory addresses across all platforms are now 64 bits
17083 wide. Logical address width remains dependent on the platform
17086 AcpiOsMapMemory interface changed to a 64-bit physical address.
17088 The AML interpreter integer size is now 64 bits, as per the ACPI
17091 For backwards compatibility with ACPI 1.0, ACPI tables with a
17092 revision number less than 2 use 32-bit integers only.
17094 Fixed a problem where the evaluation of OpRegion operands did not
17095 always resolve them to numbers properly.
17097 ------------------------------------------
17098 Summary of changes for this label: 10_20_00
17100 Fix for CBN_._STA issue. This fix will allow correct access to
17101 CBN_ OpRegions when the _STA returns 0x8.
17103 Support to convert ACPI constants (Ones, Zeros, One) to actual
17104 values before a package object is returned
17106 Fix for method call as predicate to if/while construct causing
17107 incorrect if/while behavior
17109 Fix for Else block package lengths sometimes calculated wrong (if
17112 Fix for Processor object length field, was always zero
17114 Table load abort if FACP sanity check fails
17116 Fix for problem with Scope(name) if name already exists
17118 Warning emitted if a named object referenced cannot be found
17119 (resolved) during method execution.
17125 ------------------------------------------
17126 Summary of changes for this label: 9_29_00
17128 New table initialization interfaces: AcpiInitializeSubsystem no
17129 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17130 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17131 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17134 Note: These interface changes require changes to all existing OSDs
17136 The PCI_Config default address space handler is always installed
17137 at the root namespace object.
17139 -------------------------------------------
17140 Summary of changes for this label: 09_15_00
17142 The new initialization architecture is implemented. New
17143 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17144 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17146 (Namespace is automatically loaded when a table is loaded)
17148 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17149 52 bytes to 32 bytes. There is usually one of these for every
17150 namespace object, so the memory savings is significant.
17152 Implemented just-in-time evaluation of the CreateField operators.
17154 Bug fixes for IA-64 support have been integrated.
17156 Additional code review comments have been implemented
17158 The so-called "third pass parse" has been replaced by a final walk
17159 through the namespace to initialize all operation regions (address
17160 spaces) and fields that have not yet been initialized during the
17161 execution of the various _INI and REG methods.
17163 New file - namespace/nsinit.c
17165 -------------------------------------------
17166 Summary of changes for this label: 09_01_00
17168 Namespace manager data structures have been reworked to change the
17169 primary object from a table to a single object. This has
17170 resulted in dynamic memory savings of 3X within the namespace and
17171 2X overall in the ACPI CA subsystem.
17173 Fixed problem where the call to AcpiEvFindPciRootBuses was
17174 inadvertently left commented out.
17176 Reduced the warning count when generating the source with the GCC
17179 Revision numbers added to each module header showing the
17180 SourceSafe version of the file. Please refer to this version
17181 number when giving us feedback or comments on individual modules.
17183 The main object types within the subsystem have been renamed to
17184 clarify their purpose:
17186 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17187 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17188 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17190 NOTE: no changes to the initialization sequence are included in
17193 -------------------------------------------
17194 Summary of changes for this label: 08_23_00
17196 Fixed problem where TerminateControlMethod was being called
17197 multiple times per method
17199 Fixed debugger problem where single stepping caused a semaphore to
17202 Improved performance through additional parse object caching -
17203 added ACPI_EXTENDED_OP type
17205 -------------------------------------------
17206 Summary of changes for this label: 08_10_00
17208 Parser/Interpreter integration: Eliminated the creation of
17209 complete parse trees for ACPI tables and control methods.
17210 Instead, parse subtrees are created and then deleted as soon as
17211 they are processed (Either entered into the namespace or executed
17212 by the interpreter). This reduces the use of dynamic kernel
17213 memory significantly. (about 10X)
17215 Exception codes broken into classes and renumbered. Be sure to
17216 recompile all code that includes acexcep.h. Hopefully we won't
17217 have to renumber the codes again now that they are split into
17218 classes (environment, programmer, AML code, ACPI table, and
17221 Fixed some additional alignment issues in the Resource Manager
17224 Implemented semaphore tracking in the AcpiExec utility, and fixed
17225 several places where mutexes/semaphores were being unlocked
17226 without a corresponding lock operation. There are no known
17227 semaphore or mutex "leaks" at this time.
17229 Fixed the case where an ASL Return operator is used to return an
17232 -------------------------------------------
17233 Summary of changes for this label: 07_28_00
17235 Fixed a problem with the way addresses were calculated in
17236 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17237 manifested itself when a Field was created with WordAccess or
17238 DwordAccess, but the field unit defined within the Field was less
17240 than a Word or Dword.
17242 Fixed a problem in AmlDumpOperands() module's loop to pull
17243 operands off of the operand stack to display information. The
17244 problem manifested itself as a TLB error on 64-bit systems when
17245 accessing an operand stack with two or more operands.
17247 Fixed a problem with the PCI configuration space handlers where
17248 context was getting confused between accesses. This required a
17249 change to the generic address space handler and address space
17250 setup definitions. Handlers now get both a global handler context
17251 (this is the one passed in by the user when executing
17252 AcpiInstallAddressSpaceHandler() and a specific region context
17253 that is unique to each region (For example, the _ADR, _SEG and
17254 _BBN values associated with a specific region). The generic
17255 function definitions have changed to the following:
17257 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17258 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17259 *HandlerContext, // This used to be void *Context void
17260 *RegionContext); // This is an additional parameter
17262 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17263 RegionHandle, UINT32 Function, void *HandlerContext, void
17264 **RegionContext); // This used to be **ReturnContext
17266 -------------------------------------------
17267 Summary of changes for this label: 07_21_00
17269 Major file consolidation and rename. All files within the
17270 interpreter have been renamed as well as most header files. This
17271 was done to prevent collisions with existing files in the host
17272 OSs -- filenames such as "config.h" and "global.h" seem to be
17273 quite common. The VC project files have been updated. All
17274 makefiles will require modification.
17276 The parser/interpreter integration continues in Phase 5 with the
17277 implementation of a complete 2-pass parse (the AML is parsed
17278 twice) for each table; This avoids the construction of a huge
17279 parse tree and therefore reduces the amount of dynamic memory
17280 required by the subsystem. Greater use of the parse object cache
17281 means that performance is unaffected.
17283 Many comments from the two code reviews have been rolled in.
17285 The 64-bit alignment support is complete.
17287 -------------------------------------------
17288 Summary of changes for this label: 06_30_00
17290 With a nod and a tip of the hat to the technology of yesteryear,
17291 we've added support in the source code for 80 column output
17292 devices. The code is now mostly constrained to 80 columns or
17293 less to support environments and editors that 1) cannot display
17294 or print more than 80 characters on a single line, and 2) cannot
17295 disable line wrapping.
17297 A major restructuring of the namespace data structure has been
17298 completed. The result is 1) cleaner and more
17299 understandable/maintainable code, and 2) a significant reduction
17300 in the dynamic memory requirement for each named ACPI object
17303 -------------------------------------------
17304 Summary of changes for this label: 06_23_00
17306 Linux support has been added. In order to obtain approval to get
17307 the ACPI CA subsystem into the Linux kernel, we've had to make
17308 quite a few changes to the base subsystem that will affect all
17309 users (all the changes are generic and OS- independent). The
17310 effects of these global changes have been somewhat far reaching.
17311 Files have been merged and/or renamed and interfaces have been
17312 renamed. The major changes are described below.
17314 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17315 pollution/confusion within our target kernels. All OSD
17316 interfaces must be modified to match the new naming convention.
17318 Files merged across the subsystem. A number of the smaller source
17319 and header files have been merged to reduce the file count and
17320 increase the density of the existing files. There are too many
17321 to list here. In general, makefiles that call out individual
17322 files will require rebuilding.
17324 Interpreter files renamed. All interpreter files now have the
17325 prefix am* instead of ie* and is*.
17327 Header files renamed: The acapi.h file is now acpixf.h. The
17328 acpiosd.h file is now acpiosxf.h. We are removing references to
17329 the acronym "API" since it is somewhat windowsy. The new name is
17330 "external interface" or xface or xf in the filenames.j
17333 All manifest constants have been forced to upper case (some were
17334 mixed case.) Also, the string "ACPI_" has been prepended to many
17335 (not all) of the constants, typedefs, and structs.
17337 The globals "DebugLevel" and "DebugLayer" have been renamed
17338 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17340 All other globals within the subsystem are now prefixed with
17341 "AcpiGbl_" Internal procedures within the subsystem are now
17342 prefixed with "Acpi" (with only a few exceptions). The original
17343 two-letter abbreviation for the subcomponent remains after "Acpi"
17344 - for example, CmCallocate became AcpiCmCallocate.
17346 Added a source code translation/conversion utility. Used to
17347 generate the Linux source code, it can be modified to generate
17348 other types of source as well. Can also be used to cleanup
17349 existing source by removing extraneous spaces and blank lines.
17350 Found in tools/acpisrc/*
17352 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17353 AcpiOsUnmapMemory. (UnMap became Unmap).
17355 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17356 When set to one, this indicates that the caller wants to use the
17358 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17359 both types. However, implementers of this call may want to use
17360 different OS primitives depending on the type of semaphore
17361 requested. For example, some operating systems provide separate
17363 "mutex" and "semaphore" interfaces - where the mutex interface is
17364 much faster because it doesn't have all the overhead of a full
17365 semaphore implementation.
17367 Fixed a deadlock problem where a method that accesses the PCI
17368 address space can block forever if it is the first access to the
17371 -------------------------------------------
17372 Summary of changes for this label: 06_02_00
17374 Support for environments that cannot handle unaligned data
17375 accesses (e.g. firmware and OS environments devoid of alignment
17376 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17377 been added (via configurable macros) in these three areas: -
17378 Transfer of data from the raw AML byte stream is done via byte
17379 moves instead of word/dword/qword moves. - External objects are
17380 aligned within the user buffer, including package elements (sub-
17381 objects). - Conversion of name strings to UINT32 Acpi Names is now
17384 The Store operator was modified to mimic Microsoft's
17385 implementation when storing to a Buffer Field.
17387 Added a check of the BM_STS bit before entering C3.
17389 The methods subdirectory has been obsoleted and removed. A new
17390 file, cmeval.c subsumes the functionality.
17392 A 16-bit (DOS) version of AcpiExec has been developed. The
17393 makefile is under the acpiexec directory.