1 ----------------------------------------
2 31 May 2017. Summary of changes for version 20170531:
7 The ACPI specification version 6.2 has been released and is available at
8 http://uefi.org/specifications
10 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
13 New ACPI tables (Table Compiler/Disassembler/Templates):
14 HMAT (Heterogeneous Memory Attributes Table)
15 WSMT (Windows SMM Security Mitigation Table)
16 PPTT (Processor Properties Topology Table)
18 New subtables for existing ACPI tables:
19 HEST (New subtable, Arch-deferred machine check)
20 SRAT (New subtable, Arch-specific affinity structure)
21 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
23 Simple updates for existing ACPI tables:
24 BGRT (two new flag bits)
25 HEST (New bit defined for several subtables, GHES_ASSIST)
27 New Resource Descriptors and Resource macros (Compiler/Disassembler):
33 New type for hardware error notification (section 18.3.2.9)
35 New predefined names/methods (Compiler/Interpreter):
36 _HMA (Heterogeneous Memory Attributes)
37 _LSI (Label Storage Information)
38 _LSR (Label Storage Read)
39 _LSW (Label Storage Write)
41 ASL grammar/macro changes (Compiler):
42 For() ASL macro, implemented with the AML while operator
43 Extensions to Concatenate operator
44 Support for multiple definition blocks in same ASL file
45 Clarification for Buffer operator
46 Allow executable AML code underneath all scopes (Devices, etc.)
47 Clarification/change for the _OSI return value
48 ASL grammar update for reference operators
49 Allow a zero-length string for AML filename in DefinitionBlock
52 New device object notification value
53 Remove a notify value (0x0C) for graceful shutdown
54 New UUIDs for processor/cache properties and
55 physical package property
56 New _HID, ACPI0014 (Wireless Power Calibration Device)
59 1) ACPICA kernel-resident subsystem:
61 Added support to disable ACPI events on hardware-reduced platforms.
62 Eliminates error messages of the form "Could not enable fixed event". Lv
65 Fixed a problem using Device/Thermal objects with the ObjectType and
66 DerefOf ASL operators. This support had not been fully/properly
69 Fixed a problem where if a Buffer object containing a resource template
70 was longer than the actual resource template, an error was generated --
71 even though the AML is legal. This case has been seen in the field.
73 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
74 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
76 Added header file changes for the TPM2 ACPI table. Update to new version
77 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
79 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
80 These interfaces are intended to be used only in conjunction with the
81 predefined _DLM method (Device Lock Method). "This object appears in a
82 device scope when AML access to the device must be synchronized with the
85 Example Code and Data Size: These are the sizes for the OS-independent
86 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
87 debug version of the code includes the debug output trace mechanism and
88 has a much larger code and data size.
91 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
92 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
94 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
95 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
98 2) iASL Compiler/Disassembler and Tools:
100 iASL: Fixed a problem where an External() declaration could not refer to
101 a Field Unit. Erik Schmauss.
103 Disassembler: Improved support for the Switch/Case operators. This
104 feature will disassemble AML code back to the original Switch operators
105 when possible, instead of an If..Else sequence. David Box
107 iASL and disassembler: Improved the handling of multiple extraneous
108 parentheses for both ASL input and disassembled ASL output.
110 Improved the behavior of the iASL compiler and disassembler to detect
111 improper use of external declarations
113 Disassembler: Now aborts immediately upon detection of an unknown AML
114 opcode. The AML parser has no real way to recover from this, and can
115 result in the creation of an ill-formed parse tree that causes errors
116 later during the disassembly.
118 All tools: Fixed a problem where the Unix application OSL did not handle
119 control-c correctly. For example, a control-c could incorrectly wake the
122 AcpiExec: Improved the Control-C handling and added a handler for
123 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
126 Reduced the verbosity of the generic unix makefiles. Previously, each
127 compilation displayed the full set of compiler options. This has been
128 eliminated as the options are easily inspected within the makefiles. Each
129 compilation now results in a single line of output.
131 ----------------------------------------
132 03 March 2017. Summary of changes for version 20170303:
137 The licensing information at the start of each source code module has
138 been updated. In addition to the Intel license, the dual GPLv2/BSD
139 license has been added for completeness. Now, a single version of the
140 source code should be suitable for all ACPICA customers. This is the
141 major change for this release since it affects all source code modules.
144 1) ACPICA kernel-resident subsystem:
146 Fixed two issues with the common asltypes.h header that could cause
147 problems in some environments: (Kim Jung-uk)
148 Removed typedef for YY_BUFFER_STATE ?
149 Fixes an error with earlier versions of Flex.
150 Removed use of FILE typedef (which is only defined in stdio.h)
153 2) iASL Compiler/Disassembler and Tools:
155 Disassembler: fixed a regression introduced in 20170224. A fix for a
156 memory leak related to resource descriptor tags (names) could fault when
157 the disassembler was generated with 64-bit compilers.
159 The ASLTS test suite has been updated to implement a new testing
160 architecture. During generation of the suite from ASL source, both the
161 ASL and ASL+ compilers are now validated, as well as the disassembler
162 itself (Erik Schmauss). The architecture executes as follows:
164 For every ASL source module:
165 Compile (legacy ASL compilation)
166 Disassemble the resulting AML to ASL+ source code
167 Compile the new ASL+ module
168 Perform a binary compare on the legacy AML and the new ASL+ AML
169 The ASLTS suite then executes normally using the AML binaries.
171 ----------------------------------------
172 24 February 2017. Summary of changes for version 20170224:
175 1) ACPICA kernel-resident subsystem:
177 Interpreter: Fixed two issues with the control method return value auto-
178 repair feature, where an attempt to double-delete an internal object
179 could result in an ACPICA warning (for _CID repair and others). No fault
180 occurs, however, because the attempted deletion (actually a release to an
181 internal cache) is detected and ignored via object poisoning.
183 Debugger: Fixed an AML interpreter mutex issue during the single stepping
184 of control methods. If certain debugger commands are executed during
185 stepping, a mutex aquire/release error could occur. Lv Zheng.
187 Fixed some issues generating ACPICA with the Intel C compiler by
188 restoring the original behavior and compiler-specific include file in
191 Example Code and Data Size: These are the sizes for the OS-independent
192 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
193 debug version of the code includes the debug output trace mechanism and
194 has a much larger code and data size.
197 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
198 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
200 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
201 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
204 2) iASL Compiler/Disassembler and Tools:
206 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
207 tool has been designed, implemented, and included in this release. The
208 key feature of this utility is that the original comments within the
209 input ASL file are preserved during the conversion process, and included
210 within the converted ASL+ file -- thus creating a transparent conversion
211 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
213 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
216 iASL/Disassembler: Improved the detection and correct disassembly of
217 Switch/Case operators. This feature detects sequences of if/elseif/else
218 operators that originated from ASL Switch/Case/Default operators and
219 emits the original operators. David Box.
221 iASL: Improved the IORT ACPI table support in the following areas. Lv
223 Clear MappingOffset if the MappingCount is zero.
224 Fix the disassembly of the SMMU GSU interrupt offset.
225 Update the template file for the IORT table.
227 Disassembler: Enhanced the detection and disassembly of resource
228 template/descriptor within a Buffer object. An EndTag descriptor is now
229 required to have a zero second byte, since all known ASL compilers emit
230 this. This helps eliminate incorrect decisions when a buffer is
231 disassembled (false positives on resource templates).
233 ----------------------------------------
234 19 January 2017. Summary of changes for version 20170119:
237 1) General ACPICA software:
239 Entire source code base: Added the 2017 copyright to all source code
240 legal/licensing module headers and utility/tool signons. This includes
241 the standard Linux dual-license header. This affects virtually every file
242 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
243 the ACPICA test suite.
246 2) iASL Compiler/Disassembler and Tools:
248 iASL: Removed/fixed an inadvertent remark when a method argument
249 containing a reference is used as a target operand within the method (and
250 never used as a simple argument), as in the example below. Jeffrey Hugo.
252 dsdt.asl 1507: Store(0x1, Arg0)
253 Remark 2146 - ^ Method Argument is never used (Arg0)
255 All tools: Removed the bit width of the compiler that generated the tool
256 from the common signon for all user space tools. This proved to be
257 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
258 from the generic makefiles (Thomas Petazzoni). Example below.
261 ASL+ Optimizing Compiler version 20170119-32
262 ASL+ Optimizing Compiler version 20170119-64
265 ASL+ Optimizing Compiler version 20170119
267 ----------------------------------------
268 22 December 2016. Summary of changes for version 20161222:
271 1) ACPICA kernel-resident subsystem:
273 AML Debugger: Implemented a new mechanism to simplify and enhance
274 debugger integration into all environments, including kernel debuggers
275 and user-space utilities, as well as remote debug services. This
276 mechanism essentially consists of new OSL interfaces to support debugger
277 initialization/termination, as well as wait/notify interfaces to perform
278 the debugger handshake with the host. Lv Zheng.
281 AcpiOsInitializeDebugger (void)
282 AcpiOsTerminateDebugger (void)
283 AcpiOsWaitCommandReady (void)
284 AcpiOsNotifyCommandComplete (void)
286 New OS services layer:
287 osgendbg.c -- Example implementation, and used for AcpiExec
289 Update for Generic Address Space (GAS) support: Although the AccessWidth
290 and/or BitOffset fields of the GAS are not often used, this change now
291 fully supports these fields. This affects the internal support for FADT
292 registers, registers in other ACPI data tables, and the AcpiRead and
293 AcpiWrite public interfaces. Lv Zheng.
295 Sleep support: In order to simplify integration of ACPI sleep for the
296 various host operating systems, a new OSL interface has been introduced.
297 AcpiOsEnterSleep allows the host to perform any required operations
298 before the final write to the sleep control register(s) is performed by
302 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
304 Called from these internal interfaces:
308 EFI support: Added a very small EFI/ACPICA example application. Provides
309 a simple demo for EFI integration, as well as assisting with resolution
310 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
312 source/tools/efihello/efihello.c
314 Local C library: Implemented several new functions to enhance ACPICA
315 portability, for environments where these clib functions are not
316 available (such as EFI). Lv Zheng:
323 Fixed a regression where occasionally a valid resource descriptor was
324 incorrectly detected as invalid at runtime, and a
325 AE_AML_NO_RESOURCE_END_TAG was returned.
327 Fixed a problem with the recently implemented support that enables
328 control method invocations as Target operands to many ASL operators.
329 Warnings of this form: "Needed type [Reference], found [Processor]" were
330 seen at runtime for some method invocations.
332 Example Code and Data Size: These are the sizes for the OS-independent
333 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
334 debug version of the code includes the debug output trace mechanism and
335 has a much larger code and data size.
338 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
339 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
341 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
342 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
345 2) iASL Compiler/Disassembler and Tools:
347 Disassembler: Enhanced output by adding the capability to detect and
348 disassemble ASL Switch/Case statements back to the original ASL source
349 code instead of if/else blocks. David Box.
351 AcpiHelp: Split a large file into separate files based upon
352 functionality/purpose. New files are:
356 ----------------------------------------
357 17 November 2016. Summary of changes for version 20161117:
360 1) ACPICA kernel-resident subsystem:
362 Table Manager: Fixed a regression introduced in 20160729, "FADT support
363 cleanup". This was an attempt to remove all references in the source to
364 the FADT version 2, which never was a legal version number. It was
365 skipped because it was an early version of 64-bit support that was
366 eventually abandoned for the current 64-bit support.
368 Interpreter: Fixed a problem where runtime implicit conversion was
369 incorrectly disabled for the ASL operators below. This brings the
370 behavior into compliance with the ACPI specification:
378 Table Manager: Added a new public interface, AcpiPutTable, used to
379 release and free an ACPI table returned by AcpiGetTable and related
380 interfaces. Lv Zheng.
382 Example Code and Data Size: These are the sizes for the OS-independent
383 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
384 debug version of the code includes the debug output trace mechanism and
385 has a much larger code and data size.
388 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
389 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
391 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
392 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
395 2) iASL Compiler/Disassembler and Tools:
397 Disassembler: Fixed a regression for disassembly of Resource Template.
398 Detection of templates in the AML stream missed some types of templates.
400 iASL: Fixed a problem where an Access Size error was returned for the PCC
401 address space when the AccessSize of the GAS register is greater than a
404 iASL: Implemented several grammar changes for the operators below. These
405 changes are slated for the next version of the ACPI specification:
406 RefOf - Disallow method invocation as an operand
407 CondRefOf - Disallow method invocation as an operand
408 DerefOf - Disallow operands that use the result from operators
410 do not return a reference (Changed TermArg to
413 iASL: Control method invocations are now allowed for Target operands, as
414 per the ACPI specification. Removed error for using a control method
415 invocation as a Target operand.
417 Disassembler: Improved detection of Resource Templates, Unicode, and
418 Strings within Buffer objects. These subtypes do not contain a specific
419 opcode to indicate the originating ASL code, and they must be detected by
420 other means within the disassembler.
422 iASL: Implemented an optimization improvement for 32-bit ACPI tables
423 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
424 only after 64-bit to 32-bit truncation. A truncation warning message is
425 still emitted, however.
427 AcpiXtract: Implemented handling for both types of line terminators (LF
428 or CR/LF) so that it can accept AcpiDump output files from any system.
431 AcpiBin: Added two new options for comparing AML files:
432 -a: compare and display ALL mismatches
433 -o: start compare at this offset into the second file
435 ----------------------------------------
436 30 September 2016. Summary of changes for version 20160930:
439 1) ACPICA kernel-resident subsystem:
441 Fixed a regression in the internal AcpiTbFindTable function where a non
442 AE_OK exception could inadvertently be returned even if the function did
443 not fail. This problem affects the following operators:
447 Fixed a regression in the LoadTable operator where a load to any
448 namespace location other than the root no longer worked properly.
450 Increased the maximum loop count value that will result in the
451 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
452 prevent infinite loops within the AML interpreter and thus the host OS
453 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
456 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
457 acpixf.h file. This allows hosts to easily configure the maximum loop
460 Removed an illegal character in the strtoul64.c file. This character
461 caused errors with some C compilers.
463 Example Code and Data Size: These are the sizes for the OS-independent
464 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
465 debug version of the code includes the debug output trace mechanism and
466 has a much larger code and data size.
469 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
470 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
472 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
473 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
476 2) iASL Compiler/Disassembler and Tools:
478 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
479 the simpler ASL ElseIf keyword. During the conversion, a trailing If
480 block could be lost and missing from the disassembled output.
482 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
483 the missing rule caused a parse error when using the Index operator as an
484 operand to ObjectType. This construct now compiles properly. Example:
487 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
488 option). Previously, unresolved symbols could cause a protection fault.
489 Such symbols are now marked as unresolved in the map file.
491 iASL: Implemented support to allow control method invocations as an
492 operand to the ASL DeRefOf operator. Example:
493 DeRefOf(MTH1(Local0))
495 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
496 possible _PLD buffer now includes examination of both the normal buffer
497 length (16 or 20) as well as the surrounding AML package length.
499 Disassembler: Fixed a problem with the decoding of complex expressions
500 within the Divide operator for ASL+. For the case where both the quotient
501 and remainder targets are specified, the entire statement cannot be
502 disassembled. Previously, the output incorrectly contained a mix of ASL-
503 and ASL+ operators. This mixed statement causes a syntax error when
505 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
507 Divide (INT1 + 6, 128, RSLT, QUOT)
509 iASL/Tools: Added support to process AML and non-AML ACPI tables
510 consistently. For the disassembler and AcpiExec, allow all types of ACPI
511 tables (AML and data tables). For the iASL -e option, allow only AML
514 ----------------------------------------
515 31 August 2016. Summary of changes for version 20160831:
518 1) ACPICA kernel-resident subsystem:
520 Improve support for the so-called "module-level code", which is defined
521 to be math, logical and control AML opcodes that appear outside of any
522 control method. This change improves the support by adding more opcodes
523 that can be executed in the manner. Some other issues have been solved,
524 and the ASL grammar changes to support such code under all scope
525 operators (Device, etc.) are complete. Lv Zheng.
527 UEFI support: these OSL functions have been implemented. This is an
528 additional step toward supporting the AcpiExec utility natively (with
529 full hardware access) under UEFI. Marcelo Ferreira.
530 AcpiOsReadPciConfiguration
531 AcpiOsWritePciConfiguration
533 Fixed a possible mutex error during control method auto-serialization. Lv
536 Updated support for the Generic Address Structure by fully implementing
537 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
540 Updated the return value for the internal _OSI method. Instead of
541 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
542 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
543 implementations, and will be reflected and clarified in the next version
544 of the ACPI specification.
546 Implemented two new table events that can be passed to an ACPICA table
547 handler. These events are used to indicate a table installation or
548 uninstallation. These events are used in addition to existed table load
549 and unload events. Lv Zheng.
551 Implemented a cleanup for all internal string-to-integer conversions.
552 Consolidate multiple versions of this functionality and limit possible
553 bases to either 10 or 16 to simplify the code. Adds a new file,
556 Cleanup the inclusion order of the various compiler-specific headers.
557 This simplifies build configuration management. The compiler-specific
558 headers are now split out from the host-specific headers. Lv Zheng.
560 Example Code and Data Size: These are the sizes for the OS-independent
561 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
562 debug version of the code includes the debug output trace mechanism and
563 has a much larger code and data size.
566 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
567 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
570 2) iASL Compiler/Disassembler and Tools:
572 iASL/AcpiExec: Added a command line option to display the build date/time
573 of the tool (-vd). This can be useful to verify that the correct version
574 of the tools are being used.
576 AML Debugger: Implemented a new subcommand ("execute predef") to execute
577 all predefined control methods and names within the current namespace.
578 This can be useful for debugging problems with ACPI tables and the ACPI
581 ----------------------------------------
582 29 July 2016. Summary of changes for version 20160729:
585 1) ACPICA kernel-resident subsystem:
587 Implemented basic UEFI support for the various ACPICA tools. This
589 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
590 2) Support to obtain the ACPI tables on UEFI.
591 3) Local implementation of required C library functions not available on
593 4) A front-end (main) function for the tools for UEFI-related
596 The initial deployment of this support is the AcpiDump utility executing
597 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
598 Current environments supported are Linux/Unix. MSVC generation is not
599 supported at this time. See the generate/efi/README file for build
600 instructions. Lv Zheng.
602 Future plans include porting the AcpiExec utility to execute natively on
603 the platform with I/O and memory access. This will allow viewing/dump of
604 the platform namespace and native execution of ACPI control methods that
605 access the actual hardware. To fully implement this support, the OSL
606 functions below must be implemented with UEFI interfaces. Any community
607 help in the implementation of these functions would be appreciated:
612 AcpiOsReadPciConfiguration
613 AcpiOsWritePciConfiguration
615 Restructured and standardized the C library configuration for ACPICA,
616 resulting in the various configuration options below. This includes a
617 global restructuring of the compiler-dependent and platform-dependent
618 include files. These changes may affect the existing platform-dependent
619 configuration files on some hosts. Lv Zheng.
621 The current C library configuration options appear below. For any issues,
622 it may be helpful to examine the existing compiler-dependent and
623 platform-dependent files as examples. Lv Zheng.
626 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
628 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
629 2) Unix/Windows/BSD applications:
630 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
632 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
633 3) UEFI applications:
634 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
636 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
637 4) UEFI applications (EDK2/StdLib):
638 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
639 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
642 AML interpreter: "module-level code" support. Allows for execution of so-
643 called "executable" AML code (math/logical operations, etc.) outside of
644 control methods not just at the module level (top level) but also within
645 any scope declared outside of a control method - Scope{}, Device{},
646 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
648 Simplified the configuration of the "maximum AML loops" global option by
649 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
653 Example Code and Data Size: These are the sizes for the OS-independent
654 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
655 debug version of the code includes the debug output trace mechanism and
656 has a much larger code and data size.
659 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
660 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
663 2) iASL Compiler/Disassembler and Tools:
665 iASL: Add full support for the RASF ACPI table (RAS Features Table).
666 Includes disassembler, data table compiler, and header support.
668 iASL Expand "module-level code" support. Allows for
669 compilation/disassembly of so-called "executable" AML code (math/logical
670 operations, etc.) outside of control methods not just at the module level
671 (top level) but also within any scope declared outside of a control
672 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
675 AcpiDump: Added support for dumping all SSDTs on newer versions of
676 Windows. These tables are now easily available -- SSDTs are not available
677 through the registry on older versions.
679 ----------------------------------------
680 27 May 2016. Summary of changes for version 20160527:
683 1) ACPICA kernel-resident subsystem:
685 Temporarily reverted the new arbitrary bit length/alignment support in
686 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
687 a number of regressions with the new code that need to be fully resolved
688 and tested before this support can be finally integrated into ACPICA.
689 Apologies for any inconveniences these issues may have caused.
691 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
692 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
693 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
695 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
696 option. Adds a new return macro, return_STR. Junk-uk Kim.
698 Example Code and Data Size: These are the sizes for the OS-independent
699 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
700 debug version of the code includes the debug output trace mechanism and
701 has a much larger code and data size.
704 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
705 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
707 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
708 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
710 ----------------------------------------
711 22 April 2016. Summary of changes for version 20160422:
713 1) ACPICA kernel-resident subsystem:
715 Fixed a regression in the GAS (generic address structure) arbitrary bit
716 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
717 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
719 ACPI 6.0: Added support for new/renamed resource macros. One new argument
720 was added to each of these macros, and the original name has been
721 deprecated. The AML disassembler will always disassemble to the new
722 names. Support for the new macros was added to iASL, disassembler,
723 resource manager, and the acpihelp utility. ACPICA BZ 1274.
725 I2cSerialBus -> I2cSerialBusV2
726 SpiSerialBus -> SpiSerialBusV2
727 UartSerialBus -> UartSerialBusV2
729 ACPI 6.0: Added support for a new integer field that was appended to the
730 package object returned by the _BIX method. This adds iASL compile-time
731 and AML runtime error checking. ACPICA BZ 1273.
733 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
734 Subspace Type2" (Headers, Disassembler, and data table compiler).
736 Example Code and Data Size: These are the sizes for the OS-independent
737 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
738 debug version of the code includes the debug output trace mechanism and
739 has a much larger code and data size.
742 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
743 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
745 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
746 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
749 2) iASL Compiler/Disassembler and Tools:
751 iASL: Implemented an ASL grammar extension to allow/enable executable
752 "module-level code" to be created and executed under the various
753 operators that create new scopes. This type of AML code is already
754 supported in all known AML interpreters, and the grammar change will
755 appear in the next version of the ACPI specification. Simplifies the
756 conditional runtime creation of named objects under these object types:
764 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
765 ease-of-use to the ASL language. The syntax is similar to the
766 corresponding C operator, and is implemented with the existing AML While
767 opcode -- thus requiring no changes to existing AML interpreters.
769 For (Initialize, Predicate, Update) {TermList}
774 Initializer // Nothing | TermArg => ComputationalData
775 Predicate // Nothing | TermArg => ComputationalData
776 Update // Nothing | TermArg => ComputationalData
780 iASL: The _HID/_ADR detection and validation has been enhanced to search
781 under conditionals in order to allow these objects to be conditionally
784 iASL: Fixed several issues with the constant folding feature. The
785 improvement allows better detection and resolution of statements that can
786 be folded at compile time. ACPICA BZ 1266.
788 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
789 conversion to the ASL ElseIf operator where incorrect ASL code could be
792 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
793 sometimes an extra (and extraneous) set of parentheses were emitted for
794 some combinations of operators. Although this did not cause any problems
795 with recompilation of the disassembled code, it made the code more
796 difficult to read. David Box. ACPICA BZ 1231.
798 iASL: Changed to ignore the unreferenced detection for predefined names
799 of resource descriptor elements, when the resource descriptor is
800 created/defined within a control method.
802 iASL: Disassembler: Fix a possible fault with externally declared Buffer
805 ----------------------------------------
806 18 March 2016. Summary of changes for version 20160318:
808 1) ACPICA kernel-resident subsystem:
810 Added support for arbitrary bit lengths and bit offsets for registers
811 defined by the Generic Address Structure. Previously, only aligned bit
812 lengths of 8/16/32/64 were supported. This was sufficient for many years,
813 but recently some machines have been seen that require arbitrary bit-
814 level support. ACPICA BZ 1240. Lv Zheng.
816 Fixed an issue where the \_SB._INI method sometimes must be evaluated
817 before any _REG methods are evaluated. Lv Zheng.
819 Implemented several changes related to ACPI table support
820 (Headers/Disassembler/TableCompiler):
821 NFIT: For ACPI 6.1, updated to add some additional new fields and
823 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
825 DMAR: Added new constants per the 10/2014 DMAR spec.
826 IORT: Added new subtable per the 10/2015 IORT spec.
827 HEST: For ACPI 6.1, added new constants and new subtable.
828 DBG2: Added new constants per the 12/2015 DBG2 spec.
829 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
831 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
833 Updated header support for the DMAR table to match the current version of
836 Added extensions to the ASL Concatenate operator to allow any ACPI object
837 to be passed as an operand. Any object other than Integer/String/Buffer
838 simply returns a string containing the object type. This extends the
839 usefulness of the Printf macros. Previously, Concatenate would abort the
840 control method if a non-data object was encountered.
842 ACPICA source code: Deployed the C "const" keyword across the source code
843 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
845 Example Code and Data Size: These are the sizes for the OS-independent
846 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
847 debug version of the code includes the debug output trace mechanism and
848 has a much larger code and data size.
851 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
852 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
854 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
855 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
858 2) iASL Compiler/Disassembler and Tools:
860 iASL/Disassembler: Improved the heuristic used to determine the number of
861 arguments for an externally defined control method (a method in another
862 table). Although this is an improvement, there is no deterministic way to
863 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
864 will completely solve this problem as it is deployed (automatically) in
867 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
868 statements that could cause errors when the disassembled file is
869 compiled. ACPICA BZ 1243. David Box.
871 iASL: Fixed a regression caused by the merger of the two versions of the
872 local strtoul64. Because of a dependency on a global variable, strtoul64
873 could return an error for integers greater than a 32-bit value. ACPICA BZ
876 iASL: Fixed a regression where a fault could occur for an ASL Return
877 statement if it invokes a control method that is not resolved. ACPICA BZ
880 AcpiXtract: Improved input file validation: detection of binary files and
881 non-acpidump text files.
883 ----------------------------------------
884 12 February 2016. Summary of changes for version 20160212:
886 1) ACPICA kernel-resident subsystem:
888 Implemented full support for the ACPI 6.1 specification (released in
889 January). This version of the specification is available at:
890 http://www.uefi.org/specifications
892 Only a relatively small number of changes were required in ACPICA to
893 support ACPI 6.1, in these areas:
894 - New predefined names
896 - A new subtable for HEST
897 - A few other header changes for new values
899 Ensure \_SB_._INI is executed before any _REG methods are executed. There
900 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
902 Reverted a change made in version 20151218 which enabled method
903 invocations to be targets of various ASL operators (SuperName and Target
904 grammar elements). While the new behavior is supported by the ACPI
905 specification, other AML interpreters do not support this behavior and
906 never will. The ACPI specification will be updated for ACPI 6.2 to remove
907 this support. Therefore, the change was reverted to the original ACPICA
910 ACPICA now supports the GCC 6 compiler.
912 Current Release: (Note: build changes increased sizes)
913 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
914 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
916 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
917 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
920 2) iASL Compiler/Disassembler and Tools:
922 Completed full support for the ACPI 6.0 External() AML opcode. The
923 compiler emits an external AML opcode for each ASL External statement.
924 This opcode is used by the disassembler to assist with the disassembly of
925 external control methods by specifying the required number of arguments
926 for the method. AML interpreters do not use this opcode. To ensure that
927 interpreters do not even see the opcode, a block of one or more external
928 opcodes is surrounded by an "If(0)" construct. As this feature becomes
929 commonly deployed in BIOS code, the ability of disassemblers to correctly
930 disassemble AML code will be greatly improved. David Box.
932 iASL: Implemented support for an optional cross-reference output file.
933 The -lx option will create a the cross-reference file with the suffix
934 "xrf". Three different types of cross-reference are created in this file:
935 - List of object references made from within each control method
936 - Invocation (caller) list for each user-defined control method
937 - List of references to each non-method object in the namespace
939 iASL: Method invocations as ASL Target operands are now disallowed and
940 flagged as errors in preparation for ACPI 6.2 (see the description of the
943 ----------------------------------------
944 8 January 2016. Summary of changes for version 20160108:
946 1) ACPICA kernel-resident subsystem:
948 Updated all ACPICA copyrights and signons to 2016: Added the 2016
949 copyright to all source code module headers and utility/tool signons.
950 This includes the standard Linux dual-license header. This affects
951 virtually every file in the ACPICA core subsystem, iASL compiler, all
952 ACPICA utilities, and the ACPICA test suite.
954 Fixed a regression introduced in version 20151218 concerning the
955 execution of so-called module-level ASL/AML code. Namespace objects
956 created under a module-level If() construct were not properly/fully
957 entered into the namespace and could cause an interpreter fault when
960 Example Code and Data Size: These are the sizes for the OS-independent
961 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
962 debug version of the code includes the debug output trace mechanism and
963 has a much larger code and data size.
966 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
967 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
969 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
970 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
973 2) iASL Compiler/Disassembler and Tools:
975 Fixed a problem with the compilation of the GpioIo and GpioInt resource
976 descriptors. The _PIN field name was incorrectly defined to be an array
977 of 32-bit values, but the _PIN values are in fact 16 bits each. This
978 would cause incorrect bit width warnings when using Word (16-bit) fields
979 to access the descriptors.
982 ----------------------------------------
983 18 December 2015. Summary of changes for version 20151218:
985 1) ACPICA kernel-resident subsystem:
987 Implemented per-AML-table execution of "module-level code" as individual
988 ACPI tables are loaded into the namespace during ACPICA initialization.
989 In other words, any module-level code within an AML table is executed
990 immediately after the table is loaded, instead of batched and executed
991 after all of the tables have been loaded. This provides compatibility
992 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
995 To fully support the feature above, the default operation region handlers
996 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
997 installed before any ACPI tables are loaded. This enables module-level
998 code to access these address spaces during the table load and module-
999 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1002 Implemented several changes to the internal _REG support in conjunction
1003 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1004 utilities for the changes above. Although these tools were changed, host
1005 operating systems that simply use the default handlers for SystemMemory,
1006 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1008 For example, in the code below, DEV1 is conditionally added to the
1009 namespace by the DSDT via module-level code that accesses an operation
1010 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1011 created immediately after the DSDT is loaded in order for the SSDT to
1012 successfully reference DEV1. Previously, this code would cause an
1013 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1014 fully supported by ACPICA.
1016 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1018 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1019 Field (OPR1, AnyAcc, NoLock, Preserve)
1030 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1032 External (\DEV1, DeviceObj)
1038 Fixed an AML interpreter problem where control method invocations were
1039 not handled correctly when the invocation was itself a SuperName argument
1040 to another ASL operator. In these cases, the method was not invoked.
1041 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1046 Decrement, Increment
1049 Signal, Release, Reset
1052 Implemented automatic String-to-ObjectReference conversion support for
1053 packages returned by predefined names (such as _DEP). A common BIOS error
1054 is to add double quotes around an ObjectReference namepath, which turns
1055 the reference into an unexpected string object. This support detects the
1056 problem and corrects it before the package is returned to the caller that
1057 invoked the method. Lv Zheng.
1059 Implemented extensions to the Concatenate operator. Concatenate now
1060 accepts any type of object, it is not restricted to simply
1061 Integer/String/Buffer. For objects other than these 3 basic data types,
1062 the argument is treated as a string containing the name of the object
1063 type. This expands the utility of Concatenate and the Printf/Fprintf
1064 macros. ACPICA BZ 1222.
1066 Cleaned up the output of the ASL Debug object. The timer() value is now
1067 optional and no longer emitted by default. Also, the basic data types of
1068 Integer/String/Buffer are simply emitted as their values, without a data
1069 type string -- since the data type is obvious from the output. ACPICA BZ
1072 Example Code and Data Size: These are the sizes for the OS-independent
1073 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1074 debug version of the code includes the debug output trace mechanism and
1075 has a much larger code and data size.
1078 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1079 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1081 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1082 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1085 2) iASL Compiler/Disassembler and Tools:
1087 iASL: Fixed some issues with the ASL Include() operator. This operator
1088 was incorrectly defined in the iASL parser rules, causing a new scope to
1089 be opened for the code within the include file. This could lead to
1090 several issues, including allowing ASL code that is technically illegal
1091 and not supported by AML interpreters. Note, this does not affect the
1092 related #include preprocessor operator. ACPICA BZ 1212.
1094 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1095 operator is essentially an ASL macro since there is no AML opcode
1096 associated with it. The code emitted by the iASL compiler for ElseIf is
1097 an Else opcode followed immediately by an If opcode. The disassembler
1098 will now emit an ElseIf if it finds an Else immediately followed by an
1099 If. This simplifies the decoded ASL, especially for deeply nested
1100 If..Else and large Switch constructs. Thus, the disassembled code more
1101 closely follows the original source ASL. ACPICA BZ 1211. Example:
1113 ElseIf (Arg0 == 0x02)
1118 AcpiExec: Added support for the new module level code behavior and the
1119 early region installation. This required a small change to the
1120 initialization, since AcpiExec must install its own operation region
1123 AcpiExec: Added support to make the debug object timer optional. Default
1124 is timer disabled. This cleans up the debug object output -- the timer
1125 data is rarely used.
1127 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1128 appear on the command line. This can be important when there are
1129 interdependencies/references between the tables.
1131 iASL/Templates. Add support to generate template files with multiple
1132 SSDTs within a single output file. Also added ommand line support to
1133 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1137 ----------------------------------------
1138 24 November 2015. Summary of changes for version 20151124:
1140 1) ACPICA kernel-resident subsystem:
1142 Fixed a possible regression for a previous update to FADT handling. The
1143 FADT no longer has a fixed table ID, causing some issues with code that
1144 was hardwired to a specific ID. Lv Zheng.
1146 Fixed a problem where the method auto-serialization could interfere with
1147 the current SyncLevel. This change makes the auto-serialization support
1148 transparent to the SyncLevel support and management.
1150 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1151 interface is intended for early access to the namespace during the
1152 initial namespace device discovery walk. The _SUB method has been seen to
1153 access operation regions in some cases, causing errors because the
1154 operation regions are not fully initialized.
1156 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1157 that can cause faults. Lv Zheng.
1159 AML Debugger: Add thread ID support so that single-step mode only applies
1160 to the AML Debugger thread. This prevents runtime errors within some
1163 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1164 methods that are invoked by this interface are optional, removed warnings
1165 emitted for the case where one or more of these methods do not exist.
1166 ACPICA BZ 1208, original change by Prarit Bhargava.
1168 Made a major pass through the entire ACPICA source code base to
1169 standardize formatting that has diverged a bit over time. There are no
1170 functional changes, but this will of course cause quite a few code
1171 differences from the previous ACPICA release.
1173 Example Code and Data Size: These are the sizes for the OS-independent
1174 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1175 debug version of the code includes the debug output trace mechanism and
1176 has a much larger code and data size.
1179 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1180 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1182 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1183 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1186 2) iASL Compiler/Disassembler and Tools:
1188 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1189 definition blocks within a single ASL file and the resulting AML file.
1190 Support for this type of file was also added to the various tools that
1191 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1192 example code below shows two definition blocks within the same file:
1194 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1198 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1202 iASL: Enhanced typechecking for the Name() operator. All expressions for
1203 the value of the named object must be reduced/folded to a single constant
1204 at compile time, as per the ACPI specification (the AML definition of
1207 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1208 and assembly headers). Now all emitted code correctly begins in column 1.
1210 iASL: Added an error message for an attempt to open a Scope() on an
1211 object defined in an SSDT. The DSDT is always loaded into the namespace
1212 first, so any attempt to open a Scope on an SSDT object will fail at
1216 ----------------------------------------
1217 30 September 2015. Summary of changes for version 20150930:
1219 1) ACPICA kernel-resident subsystem:
1221 Debugger: Implemented several changes and bug fixes to assist support for
1222 the in-kernel version of the AML debugger. Lv Zheng.
1223 - Fix the "predefined" command for in-kernel debugger.
1224 - Do not enter debug command loop for the help and version commands.
1225 - Disallow "execute" command during execution/single-step of a method.
1227 Interpreter: Updated runtime typechecking for all operators that have
1228 target operands. The operand is resolved and validated that it is legal.
1229 For example, the target cannot be a non-data object such as a Device,
1230 Mutex, ThermalZone, etc., as per the ACPI specification.
1232 Debugger: Fixed the double-mutex user I/O handshake to work when local
1233 deadlock detection is enabled.
1235 Debugger: limited display of method locals and arguments (LocalX and
1236 ArgX) to only those that have actually been initialized. This prevents
1237 lines of extraneous output.
1239 Updated the definition of the NFIT table to correct the bit polarity of
1240 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1242 Example Code and Data Size: These are the sizes for the OS-independent
1243 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1244 debug version of the code includes the debug output trace mechanism and
1245 has a much larger code and data size.
1248 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1249 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1251 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1252 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1255 2) iASL Compiler/Disassembler and Tools:
1257 iASL: Improved the compile-time typechecking for operands of many of the
1260 -- Added an option to disable compiler operand/operator typechecking (-
1263 -- For the following operators, the TermArg operands are now validated
1264 when possible to be Integer data objects: BankField, OperationRegion,
1265 DataTableRegion, Buffer, and Package.
1267 -- Store (Source, Target): Both the source and target operands are
1268 resolved and checked that the operands are both legal. For example,
1269 neither operand can be a non-data object such as a Device, Mutex,
1270 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1271 operator can be used to store an object to any type of target object.
1273 -- Store (Source, Target): If the source is a Package object, the target
1274 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1275 is a Package, the source must also be a Package.
1277 -- Store (Source, Target): A warning is issued if the source and target
1278 resolve to the identical named object.
1280 -- Store (Source, <method invocation>): An error is generated for the
1281 target method invocation, as this construct is not supported by the AML
1284 -- For all ASL math and logic operators, the target operand must be a
1285 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1286 includes the function return value also.
1288 -- External declarations are also included in the typechecking where
1289 possible. External objects defined using the UnknownObj keyword cannot be
1290 typechecked, however.
1292 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1294 - Legacy code: Index(PKG1, 3)
1295 - New ASL+ code: PKG1[3]
1296 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1299 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1300 spaces were inadvertently appended to the filename, causing file access
1301 and deletion problems on some systems.
1303 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1304 possible compiler output files when building the test suite -- thus
1305 exercising these features of the compiler. These files are automatically
1306 deleted when the test suite exits.
1309 ----------------------------------------
1310 18 August 2015. Summary of changes for version 20150818:
1312 1) ACPICA kernel-resident subsystem:
1314 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1315 Zheng. ACPICA BZ 1186.
1317 Completed development to ensure that the ACPICA Disassembler and Debugger
1318 are fully standalone components of ACPICA. Removed cross-component
1319 dependences. Lv Zheng.
1321 The max-number-of-AML-loops is now runtime configurable (previously was
1322 compile-time only). This is essentially a loop timeout to force-abort
1323 infinite AML loops. ACPCIA BZ 1192.
1325 Debugger: Cleanup output to dump ACPI names and namepaths without any
1326 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1328 Removed unnecessary conditional compilations across the Debugger and
1329 Disassembler components where entire modules could be left uncompiled.
1331 The aapits test is deprecated and has been removed from the ACPICA git
1332 tree. The test has never been completed and has not been maintained, thus
1333 becoming rather useless. ACPICA BZ 1015, 794.
1335 A batch of small changes to close bugzilla and other reports:
1336 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1337 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1338 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1339 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1341 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1343 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1345 - Debugger: Split debugger initialization/termination interfaces. Lv
1347 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1349 - AcpiExec: Add debug message during _REG method phase during table
1351 - AcpiNames: Fix a regression where some output was missing and no longer
1353 - Debugger: General cleanup and simplification. Lv Zheng.
1354 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1356 Example Code and Data Size: These are the sizes for the OS-independent
1357 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1358 debug version of the code includes the debug output trace mechanism and
1359 has a much larger code and data size.
1362 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1363 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1365 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1366 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1369 2) iASL Compiler/Disassembler and Tools:
1371 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1372 were not handled properly and caused load errors. Now, properly invoke
1373 and use the ACPICA auto-reallocate mechanism for ACPI table data
1374 structures. ACPICA BZ 1188
1376 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1379 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1380 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1381 executed during initialization. ACPICA BZ 1187, 1189.
1383 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1384 that corresponds to each disassembled ASL statement, to simplify
1385 debugging. ACPICA BZ 1191.
1387 Debugger: Add option to the "objects" command to display a summary of the
1388 current namespace objects (Object type and count). This is displayed if
1389 the command is entered with no arguments.
1391 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1394 ----------------------------------------
1395 17 July 2015. Summary of changes for version 20150717:
1397 1) ACPICA kernel-resident subsystem:
1399 Improved the partitioning between the Debugger and Disassembler
1400 components. This allows the Debugger to be used standalone within kernel
1401 code without the Disassembler (which is used for single stepping also).
1402 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1404 Debugger: Implemented a new command to trace the execution of control
1405 methods (Trace). This is especially useful for the in-kernel version of
1406 the debugger when file I/O may not be available for method trace output.
1407 See the ACPICA reference for more information. Lv Zheng.
1409 Moved all C library prototypes (used for the local versions of these
1410 functions when requested) to a new header, acclib.h
1411 Cleaned up the use of non-ANSI C library functions. These functions are
1412 implemented locally in ACPICA. Moved all such functions to a common
1413 source file, utnonansi.c
1415 Debugger: Fixed a problem with the "!!" command (get last command
1416 executed) where the debugger could enter an infinite loop and eventually
1419 Removed the use of local macros that were used for some of the standard C
1420 library functions to automatically cast input parameters. This mostly
1421 affected the is* functions where the input parameter is defined to be an
1422 int. This required a few modifications to the main ACPICA source code to
1423 provide casting for these functions and eliminate possible compiler
1424 warnings for these parameters.
1426 Across the source code, added additional status/error checking to resolve
1427 issues discovered by static source code analysis tools such as Coverity.
1429 Example Code and Data Size: These are the sizes for the OS-independent
1430 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1431 debug version of the code includes the debug output trace mechanism and
1432 has a much larger code and data size.
1435 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1436 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1438 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1439 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1442 2) iASL Compiler/Disassembler and Tools:
1444 iASL: Fixed a regression where the device map file feature no longer
1445 worked properly when used in conjunction with the disassembler. It only
1446 worked properly with the compiler itself.
1448 iASL: Implemented a new warning for method LocalX variables that are set
1449 but never used (similar to a C compiler such as gcc). This also applies
1450 to ArgX variables that are not defined by the parent method, and are
1451 instead (legally) used as local variables.
1453 iASL/Preprocessor: Finished the pass-through of line numbers from the
1454 preprocessor to the compiler. This ensures that compiler errors/warnings
1455 have the correct original line numbers and filenames, regardless of any
1458 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1459 pass-through of comments to the preprocessor output file (which becomes
1460 the compiler input file). Also fixed a problem with // comments that
1461 appear after a math expression.
1463 iASL: Added support for the TCPA server table to the table compiler and
1464 template generator. (The client table was already previously supported)
1466 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1467 identify the iASL compiler.
1469 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1470 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1473 AcpiHelp: Update to expand help messages for the iASL preprocessor
1477 ----------------------------------------
1478 19 June 2015. Summary of changes for version 20150619:
1480 Two regressions in version 20150616 have been addressed:
1482 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1483 etc.) This update changes ACPICA to only use the standard headers for
1484 functions, or the prototypes for the local versions of the C library
1485 functions. Across the source code, this required some additional casts
1486 for some Clib invocations for portability. Moved all local prototypes to
1487 a new file, acclib.h
1489 Fixes several problems with recent changes to the handling of the FACS
1490 table that could cause some systems not to boot.
1493 ----------------------------------------
1494 16 June 2015. Summary of changes for version 20150616:
1497 1) ACPICA kernel-resident subsystem:
1499 Across the entire ACPICA source code base, the various macros for the C
1500 library functions (such as ACPI_STRLEN, etc.) have been removed and
1501 replaced by the standard C library names (strlen, etc.) The original
1502 purpose for these macros is no longer applicable. This simplification
1503 reduces the number of macros used in the ACPICA source code
1504 significantly, improving readability and maintainability.
1506 Implemented support for a new ACPI table, the OSDT. This table, the
1507 "override" SDT, can be loaded directly by the host OS at boot time. It
1508 enables the replacement of existing namespace objects that were installed
1509 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1510 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1511 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1514 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1515 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1516 X field). This change will support both automatically. There continues to
1517 be systems found with this issue. This support requires a change to the
1518 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1519 been added to allow the host to select which FACS is desired
1520 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1523 Added a new feature to allow for systems that do not contain an FACS.
1524 Although this is already supported on hardware-reduced platforms, the
1525 feature has been extended for all platforms. The reasoning is that we do
1526 not want to abort the entire ACPICA initialization just because the
1527 system is seriously buggy and has no FACS.
1529 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1530 not correctly transcribed from the ACPI specification in ACPICA version
1533 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1536 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1537 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1538 compiler also updated. Note: The TCPA "server" table is not supported by
1539 the disassembler/table-compiler at this time.
1541 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1543 Example Code and Data Size: These are the sizes for the OS-independent
1544 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1545 debug version of the code includes the debug output trace mechanism and
1546 has a much larger code and data size.
1549 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1550 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1552 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1553 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1556 2) iASL Compiler/Disassembler and Tools:
1558 Disassembler: Fixed a problem with the new symbolic operator disassembler
1559 where incorrect ASL code could be emitted in some cases for the "non-
1560 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1561 ShiftRight. The actual problem cases seem to be rather unusual in common
1562 ASL code, however. David Box.
1564 Modified the linux version of acpidump to obtain ACPI tables from not
1565 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1568 iASL: Fixed a problem where the user preprocessor output file (.i)
1569 contained extra data that was not expected. The compiler was using this
1570 file as a temporary file and passed through #line directives in order to
1571 keep compiler error messages in sync with the input file and line number
1572 across multiple include files. The (.i) is no longer a temporary file as
1573 the compiler uses a new, different file for the original purpose.
1575 iASL: Fixed a problem where comments within the original ASL source code
1576 file were not passed through to the preprocessor output file, nor any
1579 iASL: Fixed some issues for the handling of the "#include" preprocessor
1580 directive and the similar (but not the same) "Include" ASL operator.
1582 iASL: Add support for the new OSDT in both the disassembler and compiler.
1584 iASL: Fixed a problem with the constant folding support where a Buffer
1585 object could be incorrectly generated (incorrectly formed) during a
1586 conversion to a Store() operator.
1588 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1589 description text for the _REV predefined name. _REV now permanently
1590 returns 2, as per the ACPI 6.0 specification.
1592 Debugger: Enhanced the output of the Debug ASL object for references
1593 produced by the Index operator. For Buffers and strings, only output the
1594 actual byte pointed to by the index. For packages, only print the single
1595 package element decoded by the index. Previously, the entire
1596 buffer/string/package was emitted.
1598 iASL/Table-compiler: Fixed a regression where the "generic" data types
1599 were no longer recognized, causing errors.
1602 ----------------------------------------
1603 15 May 2015. Summary of changes for version 20150515:
1605 This release implements most of ACPI 6.0 as described below.
1607 1) ACPICA kernel-resident subsystem:
1609 Implemented runtime argument checking and return value checking for all
1610 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
1611 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
1613 Example Code and Data Size: These are the sizes for the OS-independent
1614 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1615 debug version of the code includes the debug output trace mechanism and
1616 has a much larger code and data size.
1619 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1620 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1622 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1623 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1626 2) iASL Compiler/Disassembler and Tools:
1628 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
1629 names (argument count validation and return value typechecking.)
1631 iASL disassembler and table compiler: implemented support for all new
1632 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
1634 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
1637 iASL preprocessor: Added a new directive to enable inclusion of binary
1638 blobs into ASL code. The new directive is #includebuffer. It takes a
1639 binary file as input and emits a named ascii buffer object into the ASL
1642 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
1644 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
1647 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
1651 ----------------------------------------
1652 10 April 2015. Summary of changes for version 20150410:
1654 Reverted a change introduced in version 20150408 that caused
1655 a regression in the disassembler where incorrect operator
1656 symbols could be emitted.
1659 ----------------------------------------
1660 08 April 2015. Summary of changes for version 20150408:
1663 1) ACPICA kernel-resident subsystem:
1665 Permanently set the return value for the _REV predefined name. It now
1666 returns 2 (was 5). This matches other ACPI implementations. _REV will be
1667 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
1668 for ACPI 2.0 and later. It should never be used to differentiate or
1669 identify operating systems.
1671 Added the "Windows 2015" string to the _OSI support. ACPICA will now
1672 return TRUE to a query with this string.
1674 Fixed several issues with the local version of the printf function.
1676 Added the C99 compiler option (-std=c99) to the Unix makefiles.
1679 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
1680 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
1682 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1683 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1686 2) iASL Compiler/Disassembler and Tools:
1688 iASL: Implemented an enhancement to the constant folding feature to
1689 transform the parse tree to a simple Store operation whenever possible:
1690 Add (2, 3, X) ==> is converted to: Store (5, X)
1691 X = 2 + 3 ==> is converted to: Store (5, X)
1693 Updated support for the SLIC table (Software Licensing Description Table)
1694 in both the Data Table compiler and the disassembler. The SLIC table
1695 support now conforms to "Microsoft Software Licensing Tables (SLIC and
1696 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
1697 following the ACPI header is now defined to be "Proprietary Data", and as
1698 such, can only be entered or displayed as a hex data block.
1700 Implemented full support for the MSDM table as described in the document
1701 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
1702 following the ACPI header is defined to be "Proprietary Data", and can
1703 only be entered or displayed as a hex data block.
1705 Implemented the -Pn option for the iASL Table Compiler (was only
1706 implemented for the ASL compiler). This option disables the iASL
1709 Disassembler: For disassembly of Data Tables, added a comment field
1710 around the Ascii equivalent data that is emitted as part of the "Raw
1711 Table Data" block. This prevents the iASL Preprocessor from possible
1712 confusion if/when the table is compiled.
1714 Disassembler: Added an option (-df) to force the disassembler to assume
1715 that the table being disassembled contains valid AML. This feature is
1716 useful for disassembling AML files that contain ACPI signatures other
1717 than DSDT or SSDT (such as OEMx or other signatures).
1719 Changes for the EFI version of the tools:
1720 1) Fixed a build error/issue
1721 2) Fixed a cast warning
1723 iASL: Fixed a path issue with the __FILE__ operator by making the
1724 directory prefix optional within the internal SplitInputFilename
1727 Debugger: Removed some unused global variables.
1729 Tests: Updated the makefile for proper generation of the AAPITS suite.
1732 ----------------------------------------
1733 04 February 2015. Summary of changes for version 20150204:
1735 ACPICA kernel-resident subsystem:
1737 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1738 copyright to all module headers and signons, including the standard Linux
1739 header. This affects virtually every file in the ACPICA core subsystem,
1740 iASL compiler, all ACPICA utilities, and the test suites.
1742 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1743 A raw gpe handling mechanism was created to allow better handling of GPE
1744 storms that aren't easily managed by the normal handler. The raw handler
1745 allows disabling/renabling of the the GPE so that interrupt storms can be
1746 avoided in cases where events cannot be timely serviced. In this
1747 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1748 GPE. This API will leave the reference counts undisturbed, thereby
1749 preventing unintentional clearing of the GPE when the intent in only to
1750 temporarily disable it. Raw handlers allow enabling and disabling of a
1751 GPE by removing GPE register locking. As such, raw handlers much provide
1752 their own locks while using GPE API's to protect access to GPE data
1756 Events: Always modify GPE registers under the GPE lock.
1757 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1758 values. Reported as bug by joe.liu@apple.com.
1760 Unix makefiles: Separate option to disable optimizations and
1761 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1762 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1763 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1764 errors when building ACPICA. This allows disabling the option without
1765 also having to disable optimazations.
1769 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1770 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1773 --------------------------------------
1774 07 November 2014. Summary of changes for version 20141107:
1776 This release is available at https://acpica.org/downloads
1778 This release introduces and implements language extensions to ASL that
1779 provide support for symbolic ("C-style") operators and expressions. These
1780 language extensions are known collectively as ASL+.
1783 1) iASL Compiler/Disassembler and Tools:
1785 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1786 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1789 Disassembler: Fixed the Unicode macro support to add escape sequences.
1790 All non-printable ASCII values are emitted as escape sequences, as well
1791 as the standard escapes for quote and backslash. Ensures that the
1792 disassembled macro can be correctly recompiled.
1794 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1795 translated to existing AML Concatenate and Store operations. Printf
1796 writes to the ASL Debug object. Fprintf allows the specification of an
1797 ASL name as the target. Only a single format specifier is required, %o,
1798 since the AML interpreter dynamically converts objects to the required
1801 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1802 (Concatenate (Concatenate (Concatenate ("", Arg0),
1803 ": Unexpected value for "), Arg1), ", "), Arg2),
1804 " at line "), Arg3), Debug)
1806 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1807 Arg0, Arg1, Arg2, Arg3)
1809 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1810 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1812 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1814 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1815 ASL parse tree before the AML code is generated. This allows blocks of
1816 ASL code to be removed in order to help locate and identify problem
1817 devices and/or code. David E. Box.
1819 AcpiExec: Added support (-fi) for an optional namespace object
1820 initialization file. This file specifies initial values for namespace
1821 objects as necessary for debugging and testing different ASL code paths
1822 that may be taken as a result of BIOS options.
1825 2) Overview of symbolic operator support for ASL (ASL+)
1826 -------------------------------------------------------
1828 As an extension to the ASL language, iASL implements support for symbolic
1829 (C-style) operators for math and logical expressions. This can greatly
1830 simplify ASL code as well as improve both readability and
1831 maintainability. These language extensions can exist concurrently with
1832 all legacy ASL code and expressions.
1834 The symbolic extensions are 100% compatible with existing AML
1835 interpreters, since no new AML opcodes are created. To implement the
1836 extensions, the iASL compiler transforms the symbolic expressions into
1837 the legacy ASL/AML equivalents at compile time.
1839 Full symbolic expressions are supported, along with the standard C
1840 precedence and associativity rules.
1842 Full disassembler support for the symbolic expressions is provided, and
1843 creates an automatic migration path for existing ASL code to ASL+ code
1844 via the disassembly process. By default, the disassembler now emits ASL+
1845 code with symbolic expressions. An option (-dl) is provided to force the
1846 disassembler to emit legacy ASL code if desired.
1848 Below is the complete list of the currently supported symbolic operators
1849 with examples. See the iASL User Guide for additional information.
1852 ASL+ Syntax Legacy ASL Equivalent
1853 ----------- ---------------------
1857 Z = X + Y Add (X, Y, Z)
1858 Z = X - Y Subtract (X, Y, Z)
1859 Z = X * Y Multiply (X, Y, Z)
1860 Z = X / Y Divide (X, Y, , Z)
1861 Z = X % Y Mod (X, Y, Z)
1862 Z = X << Y ShiftLeft (X, Y, Z)
1863 Z = X >> Y ShiftRight (X, Y, Z)
1864 Z = X & Y And (X, Y, Z)
1865 Z = X | Y Or (X, Y, Z)
1866 Z = X ^ Y Xor (X, Y, Z)
1871 // Logical operators
1873 (X == Y) LEqual (X, Y)
1874 (X != Y) LNotEqual (X, Y)
1875 (X < Y) LLess (X, Y)
1876 (X > Y) LGreater (X, Y)
1877 (X <= Y) LLessEqual (X, Y)
1878 (X >= Y) LGreaterEqual (X, Y)
1879 (X && Y) LAnd (X, Y)
1883 // Assignment and compound assignment operations
1886 X += Y Add (X, Y, X)
1887 X -= Y Subtract (X, Y, X)
1888 X *= Y Multiply (X, Y, X)
1889 X /= Y Divide (X, Y, , X)
1890 X %= Y Mod (X, Y, X)
1891 X <<= Y ShiftLeft (X, Y, X)
1892 X >>= Y ShiftRight (X, Y, X)
1893 X &= Y And (X, Y, X)
1895 X ^= Y Xor (X, Y, X)
1902 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1903 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1905 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1907 And (MEMB, 0xFFFFFFF0, SRMB)
1908 Store (MEMB, Local2)
1909 Store (PDBM, Local1)
1910 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1912 Or (PDBM, 0x02, PDBM)
1916 If (((R510 & 0x03FB) == 0x02E0) ||
1917 ((R520 & 0x03FB) == 0x02E0) ||
1918 ((R530 & 0x03FB) == 0x02E0) ||
1919 ((R540 & 0x03FB) == 0x02E0))
1921 SRMB = (MEMB & 0xFFFFFFF0)
1924 PDBM &= 0xFFFFFFFFFFFFFFF9
1930 Store (0x1234, Local1)
1931 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1932 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1933 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1934 Store (Index (PKG1, 0x03), Local6)
1935 Store (Add (Local3, Local2), Debug)
1936 Add (Local1, 0x0F, Local2)
1937 Add (Local1, Multiply (Local2, Local3), Local2)
1938 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1942 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1943 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1944 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1945 Local6 = Index (PKG1, 0x03)
1946 Debug = (Local3 + Local2)
1947 Local2 = (Local1 + 0x0F)
1948 Local2 = (Local1 + (Local2 * Local3))
1949 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1952 ----------------------------------------
1953 26 September 2014. Summary of changes for version 20140926:
1955 1) ACPICA kernel-resident subsystem:
1957 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1958 In order to support GPIO Connection objects with multiple pins, along
1959 with the related Field objects, the following changes to the interface
1960 have been made: The Address is now defined to be the offset in bits of
1961 the field unit from the previous invocation of a Connection. It can be
1962 viewed as a "Pin Number Index" into the connection resource descriptor.
1963 The BitWidth is the exact bit width of the field. It is usually one bit,
1964 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1965 additional information and examples.
1967 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1968 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1969 by the firmware), so that they cannot fire until they are enabled via
1970 AcpiUpdateAllGpes. Rafael J. Wysocki.
1972 Added a new return flag for the Event/GPE status interfaces --
1973 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1974 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1975 GPE currently has a handler associated with it, and can thus actually
1976 affect the system. Lv Zheng.
1978 Example Code and Data Size: These are the sizes for the OS-independent
1979 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1980 debug version of the code includes the debug output trace mechanism and
1981 has a much larger code and data size.
1984 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1985 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1987 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1988 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1990 2) iASL Compiler/Disassembler and Tools:
1992 iASL: Fixed a memory allocation/free regression introduced in 20140828
1993 that could cause the compiler to crash. This was introduced inadvertently
1994 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1997 iASL: Removed two error messages that have been found to create false
1998 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1999 1) Illegal forward reference within a method
2000 2) Illegal reference across two methods
2002 iASL: Implemented a new option (-lm) to create a hardware mapping file
2003 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2004 works for both the compiler and disassembler. See the iASL compiler user
2005 guide for additional information and examples (section 6.4.6).
2007 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2008 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2009 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2011 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2012 unless STDIN is actually a terminal. Assists with batch-mode processing.
2015 Disassembler/AcpiHelp: Added another large group of recognized _HID
2019 ----------------------------------------
2020 28 August 2014. Summary of changes for version 20140828:
2022 1) ACPICA kernel-resident subsystem:
2024 Fixed a problem related to the internal use of the Timer() operator where
2025 a 64-bit divide could cause an attempted link to a double-precision math
2026 library. This divide is not actually necessary, so the code was
2027 restructured to eliminate it. Lv Zheng.
2029 ACPI 5.1: Added support for the runtime validation of the _DSD package
2030 (similar to the iASL support).
2032 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2033 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2035 Example Code and Data Size: These are the sizes for the OS-independent
2036 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2037 debug version of the code includes the debug output trace mechanism and
2038 has a much larger code and data size.
2041 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2042 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2044 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2045 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2047 2) iASL Compiler/Disassembler and Tools:
2049 AcpiExec: Fixed a problem on unix systems where the original terminal
2050 state was not always properly restored upon exit. Seen when using the -v
2051 option. ACPICA BZ 1104.
2053 iASL: Fixed a problem with the validation of the ranges/length within the
2054 Memory24 resource descriptor. There was a boundary condition when the
2055 range was equal to the (length -1) caused by the fact that these values
2056 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2058 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2060 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2062 now supported properly.
2064 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2065 in the disassembler, data table compiler, and table template generator.
2067 iASL: Added a requirement for Device() objects that one of either a _HID
2068 or _ADR must exist within the scope of a Device, as per the ACPI
2069 specification. Remove a similar requirement that was incorrectly in place
2070 for the _DSD object.
2072 iASL: Added error detection for illegal named references within control
2073 methods that would cause runtime failures. Now trapped as errors are: 1)
2074 References to objects within a non-parent control method. 2) Forward
2075 references (within a method) -- for control methods, AML interpreters use
2076 a one-pass parse of control methods. ACPICA BZ 1008.
2078 iASL: Added error checking for dependencies related to the _PSx power
2079 methods. ACPICA BZ 1029.
2080 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2082 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2085 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2086 deploying the existing object and string caches and adding new caches for
2089 iASL: Split the huge parser source file into multiple subfiles to improve
2090 manageability. Generation now requires the M4 macro preprocessor, which
2091 is part of the Bison distribution on both unix and windows platforms.
2093 AcpiSrc: Fixed and removed all extraneous warnings generated during
2094 entire ACPICA source code scan and/or conversion.
2097 ----------------------------------------
2099 24 July 2014. Summary of changes for version 20140724:
2101 The ACPI 5.1 specification has been released and is available at:
2102 http://uefi.org/specs/access
2105 0) ACPI 5.1 support in ACPICA:
2107 ACPI 5.1 is fully supported in ACPICA as of this release.
2109 New predefined names. Support includes iASL and runtime ACPICA
2111 _CCA (Cache Coherency Attribute).
2112 _DSD (Device-Specific Data). David Box.
2114 Modifications to existing ACPI tables. Support includes headers, iASL
2115 Data Table compiler, disassembler, and the template generator.
2116 FADT - New fields and flags. Graeme Gregory.
2117 GTDT - One new subtable and new fields. Tomasz Nowicki.
2118 MADT - Two new subtables. Tomasz Nowicki.
2119 PCCT - One new subtable.
2122 New notification type for System Resource Affinity change events.
2125 1) ACPICA kernel-resident subsystem:
2127 Fixed a regression introduced in 20140627 where a fault can happen during
2128 the deletion of Alias AML namespace objects. The problem affected both
2129 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2131 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2132 simple mechanism to enable wake GPEs that have no associated handler or
2133 control method. Rafael Wysocki.
2135 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2136 handler or control method associated with the particular GPE. This will
2137 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2139 Updated GPE handling and dispatch by disabling the GPE before clearing
2140 the status bit for edge-triggered GPEs. Lv Zheng.
2142 Added Timer() support to the AML Debug object. The current timer value is
2143 now displayed with each invocation of (Store to) the debug object to
2144 enable simple generation of execution times for AML code (method
2145 execution for example.) ACPICA BZ 1093.
2147 Example Code and Data Size: These are the sizes for the OS-independent
2148 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2149 debug version of the code includes the debug output trace mechanism and
2150 has a much larger code and data size.
2153 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2154 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2156 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2157 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2160 2) iASL Compiler/Disassembler and Tools:
2162 Fixed an issue with the recently added local printf implementation,
2163 concerning width/precision specifiers that could cause incorrect output.
2164 Lv Zheng. ACPICA BZ 1094.
2166 Disassembler: Added support to detect buffers that contain UUIDs and
2167 disassemble them to an invocation of the ToUUID operator. Also emit
2168 commented descriptions of known ACPI-related UUIDs.
2170 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2171 -u. Adds three new files.
2173 iASL: Update table compiler and disassembler for DMAR table changes that
2174 were introduced in September 2013. With assistance by David Woodhouse.
2176 ----------------------------------------
2177 27 June 2014. Summary of changes for version 20140627:
2179 1) ACPICA kernel-resident subsystem:
2181 Formatted Output: Implemented local versions of standard formatted output
2182 utilities such as printf, etc. Over time, it has been discovered that
2183 there are in fact many portability issues with printf, and the addition
2184 of this feature will fix/prevent these issues once and for all. Some
2185 known issues are summarized below:
2187 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2188 for the Linux kernel and is %uI64 for some MSVC versions.
2189 2) Invoking printf consistently in a manner that is portable across both
2190 32-bit and 64-bit platforms is difficult at best in many situations.
2191 3) The output format for pointers varies from system to system (leading
2192 zeros especially), and leads to inconsistent output from ACPICA across
2194 4) Certain platform-specific printf formats may conflict with ACPICA use.
2195 5) If there is no local C library available, ACPICA now has local support
2198 -- To address these printf issues in a complete manner, ACPICA now
2199 directly implements a small subset of printf format specifiers, only
2200 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2202 Implemented support for ACPICA generation within the EFI environment.
2203 Initially, the AcpiDump utility is supported in the UEFI shell
2204 environment. Lv Zheng.
2206 Added a new external interface, AcpiLogError, to improve ACPICA
2207 portability. This allows the host to redirect error messages from the
2208 ACPICA utilities. Lv Zheng.
2210 Added and deployed new OSL file I/O interfaces to improve ACPICA
2218 There are C library implementations of these functions in the new file
2219 service_layers/oslibcfs.c -- however, the functions can be implemented by
2220 the local host in any way necessary. Lv Zheng.
2222 Implemented a mechanism to disable/enable ACPI table checksum validation
2223 at runtime. This can be useful when loading tables very early during OS
2224 initialization when it may not be possible to map the entire table in
2225 order to compute the checksum. Lv Zheng.
2227 Fixed a buffer allocation issue for the Generic Serial Bus support.
2228 Originally, a fixed buffer length was used. This change allows for
2229 variable-length buffers based upon the protocol indicated by the field
2230 access attributes. Reported by Lan Tianyu. Lv Zheng.
2232 Fixed a problem where an object detached from a namespace node was not
2233 properly terminated/cleared and could cause a circular list problem if
2234 reattached. ACPICA BZ 1063. David Box.
2236 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2238 Fixed a possible memory leak in an error return path within the function
2239 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2241 Example Code and Data Size: These are the sizes for the OS-independent
2242 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2243 debug version of the code includes the debug output trace mechanism and
2244 has a much larger code and data size.
2247 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2248 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2250 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2251 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2254 2) iASL Compiler/Disassembler and Tools:
2256 Disassembler: Add dump of ASCII equivalent text within a comment at the
2257 end of each line of the output for the Buffer() ASL operator.
2259 AcpiDump: Miscellaneous changes:
2260 Fixed repetitive table dump in -n mode.
2261 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2262 the ACPI 2.0 GUID fails.
2264 iASL: Fixed a problem where the compiler could fault if incorrectly given
2265 an acpidump output file as input. ACPICA BZ 1088. David Box.
2267 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2268 they are invoked without any arguments.
2270 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2271 1086. Colin Ian King.
2273 Disassembler: Cleaned up a block of code that extracts a parent Op
2274 object. Added a comment that explains that the parent is guaranteed to be
2275 valid in this case. ACPICA BZ 1069.
2278 ----------------------------------------
2279 24 April 2014. Summary of changes for version 20140424:
2281 1) ACPICA kernel-resident subsystem:
2283 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2284 Some of these tables are known to contain a trailing NULL entry. Lv
2287 Removed an extraneous error message for the case where there are a large
2288 number of system GPEs (> 124). This was the "32-bit FADT register is too
2289 long to convert to GAS struct" message, which is irrelevant for GPEs
2290 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2291 (limited capacity) GAS bit length. Also, several changes to ensure proper
2292 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2295 Implemented and deployed additional configuration support for the public
2296 ACPICA external interfaces. Entire classes of interfaces can now be
2297 easily modified or configured out, replaced by stubbed inline functions
2298 by default. Lv Zheng.
2300 Moved all public ACPICA runtime configuration globals to the public
2301 ACPICA external interface file for convenience. Also, removed some
2302 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2304 Documentation: Added a new section to the ACPICA reference describing the
2305 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2306 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2309 Example Code and Data Size: These are the sizes for the OS-independent
2310 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2311 debug version of the code includes the debug output trace mechanism and
2312 has a much larger code and data size.
2315 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2316 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2318 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2319 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2322 2) iASL Compiler/Disassembler and Tools:
2324 iASL and disassembler: Add full support for the LPIT table (Low Power
2325 Idle Table). Includes support in the disassembler, data table compiler,
2326 and template generator.
2329 1) Add option to force the use of the RSDT (over the XSDT).
2330 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2332 iASL: Add check for predefined packages that are too large. For
2333 predefined names that contain subpackages, check if each subpackage is
2334 too large. (Check for too small already exists.)
2336 Debugger: Updated the GPE command (which simulates a GPE by executing the
2337 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2338 to the GPE 0/1 FADT-defined blocks.
2340 Unix application OSL: Update line-editing support. Add additional error
2341 checking and take care not to reset terminal attributes on exit if they
2342 were never set. This should help guarantee that the terminal is always
2343 left in the previous state on program exit.
2346 ----------------------------------------
2347 25 March 2014. Summary of changes for version 20140325:
2349 1) ACPICA kernel-resident subsystem:
2351 Updated the auto-serialize feature for control methods. This feature
2352 automatically serializes all methods that create named objects in order
2353 to prevent runtime errors. The update adds support to ignore the
2354 currently executing AML SyncLevel when invoking such a method, in order
2355 to prevent disruption of any existing SyncLevel priorities that may exist
2356 in the AML code. Although the use of SyncLevels is relatively rare, this
2357 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2358 appear on some machines starting with the 20140214 release.
2360 Added a new external interface to allow the host to install ACPI tables
2361 very early, before the namespace is even created. AcpiInstallTable gives
2362 the host additional flexibility for ACPI table management. Tables can be
2363 installed directly by the host as if they had originally appeared in the
2364 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2365 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2366 with additional internal restructuring and cleanup. See the ACPICA
2367 Reference for interface details. Lv Zheng.
2369 Added validation of the checksum for all incoming dynamically loaded
2370 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2373 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2374 and GPE handler removal. Restructured calls to eliminate possible race
2375 conditions. Lv Zheng.
2377 Added a warning for the use/execution of the ASL/AML Unload (table)
2378 operator. This will help detect and identify machines that use this
2379 operator if and when it is ever used. This operator has never been seen
2380 in the field and the usage model and possible side-effects of the drastic
2381 runtime action of a full table removal are unknown.
2383 Reverted the use of #pragma push/pop which was introduced in the 20140214
2384 release. It appears that push and pop are not implemented by enough
2385 compilers to make the use of this feature feasible for ACPICA at this
2386 time. However, these operators may be deployed in a future ACPICA
2389 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2392 Source code generation:
2393 1) Disabled the use of the "strchr" macro for the gcc-specific
2394 generation. For some versions of gcc, this macro can periodically expose
2395 a compiler bug which in turn causes compile-time error(s).
2396 2) Added support for PPC64 compilation. Colin Ian King.
2398 Example Code and Data Size: These are the sizes for the OS-independent
2399 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2400 debug version of the code includes the debug output trace mechanism and
2401 has a much larger code and data size.
2404 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2405 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2407 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2408 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2411 2) iASL Compiler/Disassembler and Tools:
2413 Disassembler: Added several new features to improve the readability of
2414 the resulting ASL code. Extra information is emitted within comment
2415 fields in the ASL code:
2416 1) Known _HID/_CID values are decoded to descriptive text.
2417 2) Standard values for the Notify() operator are decoded to descriptive
2419 3) Target operands are expanded to full pathnames (in a comment) when
2422 Disassembler: Miscellaneous updates for extern() handling:
2423 1) Abort compiler if file specified by -fe option does not exist.
2424 2) Silence unnecessary warnings about argument count mismatches.
2425 3) Update warning messages concerning unresolved method externals.
2426 4) Emit "UnknownObj" keyword for externals whose type cannot be
2430 1) Added the -a option to display both the ASL syntax and the AML
2431 encoding for an input ASL operator. This effectively displays all known
2432 information about an ASL operator with one AcpiHelp invocation.
2433 2) Added substring match support (similar to a wildcard) for the -i
2434 (_HID/PNP IDs) option.
2436 iASL/Disassembler: Since this tool does not yet support execution on big-
2437 endian machines, added detection of endianness and an error message if
2438 execution is attempted on big-endian. Support for big-endian within iASL
2439 is a feature that is on the ACPICA to-be-done list.
2442 1) Remove option to extract binary files from an acpidump; this function
2443 is made obsolete by the AcpiXtract utility.
2444 2) General cleanup of open files and allocated buffers.
2447 ----------------------------------------
2448 14 February 2014. Summary of changes for version 20140214:
2450 1) ACPICA kernel-resident subsystem:
2452 Implemented a new mechanism to proactively prevent problems with ill-
2453 behaved reentrant control methods that create named ACPI objects. This
2454 behavior is illegal as per the ACPI specification, but is nonetheless
2455 frequently seen in the field. Previously, this could lead to an
2456 AE_ALREADY_EXISTS exception if the method was actually entered by more
2457 than one thread. This new mechanism detects such methods at table load
2458 time and marks them "serialized" to prevent reentrancy. A new global
2459 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2460 feature if desired. This mechanism and global option obsoletes and
2461 supersedes the previous AcpiGbl_SerializeAllMethods option.
2463 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2464 respond TRUE to _OSI queries with this string. It is the stated policy of
2465 ACPICA to add new strings to the _OSI support as soon as possible after
2466 they are defined. See the full ACPICA _OSI policy which has been added to
2467 the utilities/utosi.c file.
2469 Hardened/updated the _PRT return value auto-repair code:
2470 1) Do not abort the repair on a single subpackage failure, continue to
2471 check all subpackages.
2472 2) Add check for the minimum subpackage length (4).
2473 3) Properly handle extraneous NULL package elements.
2475 Added support to avoid the possibility of infinite loops when traversing
2476 object linked lists. Never allow an infinite loop, even in the face of
2477 corrupted object lists.
2479 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2480 pack(pop) directives to ensure that the ACPICA headers are independent of
2481 compiler settings or other host headers.
2483 Example Code and Data Size: These are the sizes for the OS-independent
2484 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2485 debug version of the code includes the debug output trace mechanism and
2486 has a much larger code and data size.
2489 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2490 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2492 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2493 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2496 2) iASL Compiler/Disassembler and Tools:
2498 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2499 first reserved field was incorrectly forced to have a value of zero. This
2500 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2502 Debugger: Added missing support for the "Extra" and "Data" subobjects
2503 when displaying object data.
2505 Debugger: Added support to display entire object linked lists when
2506 displaying object data.
2508 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2509 Windows registry. This feature has been superseded by the acpidump
2513 ----------------------------------------
2514 14 January 2014. Summary of changes for version 20140114:
2516 1) ACPICA kernel-resident subsystem:
2518 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2519 copyright to all module headers and signons, including the standard Linux
2520 header. This affects virtually every file in the ACPICA core subsystem,
2521 iASL compiler, all ACPICA utilities, and the test suites.
2523 Improved parameter validation for AcpiInstallGpeBlock. Added the
2525 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2526 2) There is not already a GPE block attached to the device.
2527 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2530 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2531 support to allow references (namespace nodes) to be passed as arguments
2532 to control methods via the evaluate object interface. This is probably
2533 most useful for testing purposes, however.
2535 Improved support for 32/64 bit physical addresses in printf()-like
2536 output. This change improves the support for physical addresses in printf
2537 debug statements and other output on both 32-bit and 64-bit hosts. It
2538 consistently outputs the appropriate number of bytes for each host. The
2539 %p specifier is unsatisfactory since it does not emit uniform output on
2540 all hosts/clib implementations (on some, leading zeros are not supported,
2541 leading to difficult-to-read output).
2543 Example Code and Data Size: These are the sizes for the OS-independent
2544 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2545 debug version of the code includes the debug output trace mechanism and
2546 has a much larger code and data size.
2549 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2550 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2552 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2553 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2556 2) iASL Compiler/Disassembler and Tools:
2558 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2559 problem if the parent Field definition for the Connection operator refers
2560 to an operation region that does not exist. ACPICA BZ 1064.
2562 AcpiExec: Load of local test tables is now optional. The utility has the
2563 capability to load some various tables to test features of ACPICA.
2564 However, there are enough of them that the output of the utility became
2565 confusing. With this change, only the required local tables are displayed
2566 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2567 line specification. This makes the default output simler and easier to
2568 understand. The -el command line option restores the original behavior
2569 for testing purposes.
2571 AcpiExec: Added support for overlapping operation regions. This change
2572 expands the simulation of operation regions by supporting regions that
2573 overlap within the given address space. Supports SystemMemory and
2574 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2576 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2577 allows AcpiExec to simulate these address spaces, similar to the current
2578 support for SystemMemory and SystemIO.
2580 Debugger: Added new command to read/write/compare all namespace objects.
2581 The command "test objects" will exercise the entire namespace by writing
2582 new values to each data object, and ensuring that the write was
2583 successful. The original value is then restored and verified.
2585 Debugger: Added the "test predefined" command. This change makes this
2586 test public and puts it under the new "test" command. The test executes
2587 each and every predefined name within the current namespace.
2590 ----------------------------------------
2591 18 December 2013. Summary of changes for version 20131218:
2593 Global note: The ACPI 5.0A specification was released this month. There
2594 are no changes needed for ACPICA since this release of ACPI is an
2595 errata/clarification release. The specification is available at
2599 1) ACPICA kernel-resident subsystem:
2601 Added validation of the XSDT root table if it is present. Some older
2602 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2603 as containing some or all entries that are NULL pointers). This change
2604 adds a new function to validate the XSDT before actually using it. If the
2605 XSDT is found to be invalid, ACPICA will now automatically fall back to
2606 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
2607 ACPICA and enhanced by Lv Zheng and Bob Moore.
2609 Added a runtime option to ignore the XSDT and force the use of the RSDT.
2610 This change adds a runtime option that will force ACPICA to use the RSDT
2611 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
2612 requires that an XSDT be used instead of the RSDT, the XSDT has been
2613 found to be corrupt or ill-formed on some machines. Lv Zheng.
2615 Added a runtime option to favor 32-bit FADT register addresses over the
2616 64-bit addresses. This change adds an option to favor 32-bit FADT
2617 addresses when there is a conflict between the 32-bit and 64-bit versions
2618 of the same register. The default behavior is to use the 64-bit version
2619 in accordance with the ACPI specification. This can now be overridden via
2620 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
2622 During the change above, the internal "Convert FADT" and "Verify FADT"
2623 functions have been merged to simplify the code, making it easier to
2624 understand and maintain. ACPICA BZ 933.
2626 Improve exception reporting and handling for GPE block installation.
2627 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
2628 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
2630 Added helper macros to extract bus/segment numbers from the HEST table.
2631 This change adds two macros to extract the encoded bus and segment
2632 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
2633 Betty Dall <betty.dall@hp.com>
2635 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
2636 by ACPICA. It is not a public macro, so it should have no effect on
2637 existing OSV code. Lv Zheng.
2639 Example Code and Data Size: These are the sizes for the OS-independent
2640 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2641 debug version of the code includes the debug output trace mechanism and
2642 has a much larger code and data size.
2645 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2646 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2648 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2649 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2652 2) iASL Compiler/Disassembler and Tools:
2654 Disassembler: Improved pathname support for emitted External()
2655 statements. This change adds full pathname support for external names
2656 that have been resolved internally by the inclusion of additional ACPI
2657 tables (via the iASL -e option). Without this change, the disassembler
2658 can emit multiple externals for the same object, or it become confused
2659 when the Scope() operator is used on an external object. Overall, greatly
2660 improves the ability to actually recompile the emitted ASL code when
2661 objects a referenced across multiple ACPI tables. Reported by Michael
2662 Tsirkin (mst@redhat.com).
2664 Tests/ASLTS: Updated functional control suite to execute with no errors.
2665 David Box. Fixed several errors related to the testing of the interpreter
2666 slack mode. Lv Zheng.
2668 iASL: Added support to detect names that are declared within a control
2669 method, but are unused (these are temporary names that are only valid
2670 during the time the method is executing). A remark is issued for these
2671 cases. ACPICA BZ 1022.
2673 iASL: Added full support for the DBG2 table. Adds full disassembler,
2674 table compiler, and template generator support for the DBG2 table (Debug
2677 iASL: Added full support for the PCCT table, update the table definition.
2678 Updates the PCCT table definition in the actbl3.h header and adds table
2679 compiler and template generator support.
2681 iASL: Added an option to emit only error messages (no warnings/remarks).
2682 The -ve option will enable only error messages, warnings and remarks are
2683 suppressed. This can simplify debugging when only the errors are
2684 important, such as when an ACPI table is disassembled and there are many
2685 warnings and remarks -- but only the actual errors are of real interest.
2687 Example ACPICA code (source/tools/examples): Updated the example code so
2688 that it builds to an actual working program, not just example code. Added
2689 ACPI tables and execution of an example control method in the DSDT. Added
2690 makefile support for Unix generation.
2693 ----------------------------------------
2694 15 November 2013. Summary of changes for version 20131115:
2696 This release is available at https://acpica.org/downloads
2699 1) ACPICA kernel-resident subsystem:
2701 Resource Manager: Fixed loop termination for the "get AML length"
2702 function. The loop previously had an error termination on a NULL resource
2703 pointer, which can never happen since the loop simply increments a valid
2704 resource pointer. This fix changes the loop to terminate with an error on
2705 an invalid end-of-buffer condition. The problem can be seen as an
2706 infinite loop by callers to AcpiSetCurrentResources with an invalid or
2707 corrupted resource descriptor, or a resource descriptor that is missing
2708 an END_TAG descriptor. Reported by Dan Carpenter
2709 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2711 Table unload and ACPICA termination: Delete all attached data objects
2712 during namespace node deletion. This fix updates namespace node deletion
2713 to delete the entire list of attached objects (attached via
2714 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2715 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2717 ACPICA termination: Added support to delete all objects attached to the
2718 root namespace node. This fix deletes any and all objects that have been
2719 attached to the root node via AcpiAttachData. Previously, none of these
2720 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2722 Debug output: Do not emit the function nesting level for the in-kernel
2723 build. The nesting level is really only useful during a single-thread
2724 execution. Therefore, only enable this output for the AcpiExec utility.
2725 Also, only emit the thread ID when executing under AcpiExec (Context
2726 switches are still always detected and a message is emitted). ACPICA BZ
2729 Example Code and Data Size: These are the sizes for the OS-independent
2730 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2731 debug version of the code includes the debug output trace mechanism and
2732 has a much larger code and data size.
2735 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2736 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2738 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2739 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2742 2) iASL Compiler/Disassembler and Tools:
2744 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2745 correct portable POSIX header for terminal control functions.
2747 Disassembler: Fixed control method invocation issues related to the use
2748 of the CondRefOf() operator. The problem is seen in the disassembly where
2749 control method invocations may not be disassembled properly if the
2750 control method name has been used previously as an argument to CondRefOf.
2751 The solution is to not attempt to emit an external declaration for the
2752 CondRefOf target (it is not necessary in the first place). This prevents
2753 disassembler object type confusion. ACPICA BZ 988.
2755 Unix Makefiles: Added an option to disable compiler optimizations and the
2756 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2757 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2758 command line option for make (NOOPT) that disables all compiler
2759 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2760 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2761 1034. Lv Zheng, Bob Moore.
2763 Tests/ASLTS: Added options to specify individual test cases and modes.
2764 This allows testers running aslts.sh to optionally specify individual
2765 test modes and test cases. Also added an option to disable the forced
2766 generation of the ACPICA tools from source if desired. Lv Zheng.
2768 ----------------------------------------
2769 27 September 2013. Summary of changes for version 20130927:
2771 This release is available at https://acpica.org/downloads
2774 1) ACPICA kernel-resident subsystem:
2776 Fixed a problem with store operations to reference objects. This change
2777 fixes a problem where a Store operation to an ArgX object that contained
2779 reference to a field object did not complete the automatic dereference
2781 then write to the actual field object. Instead, the object type of the
2782 field object was inadvertently changed to match the type of the source
2783 operand. The new behavior will actually write to the field object (buffer
2784 field or field unit), thus matching the correct ACPI-defined behavior.
2786 Implemented support to allow the host to redefine individual OSL
2787 prototypes. This change enables the host to redefine OSL prototypes found
2788 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2789 with a macro or inlined function. Further, it allows the host to add any
2790 additional required modifiers such as __iomem, __init, __exit, etc., as
2791 necessary on a per-interface basis. Enables maximum flexibility for the
2792 OSL interfaces. Lv Zheng.
2794 Hardcoded the access width for the FADT-defined reset register. The ACPI
2795 specification requires the reset register width to be 8 bits. ACPICA now
2796 hardcodes the width to 8 and ignores the FADT width value. This provides
2797 compatibility with other ACPI implementations that have allowed BIOS code
2798 with bad register width values to go unnoticed. Matthew Garett, Bob
2802 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2804 in the OSL header (acpiosxf). The change modifies the position of this
2805 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2806 build issues if the OSL defines the implementation of the interface to be
2807 an inline stub function. Lv Zheng.
2809 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2810 initialization interfaces. This change adds a new macro for the main init
2811 and terminate external interfaces in order to support hosts that require
2812 additional or different processing for these functions. Changed from
2813 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2816 Cleaned up the memory allocation macros for configurability. In the
2818 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2819 respective AcpiOs* OSL interfaces. Two options:
2820 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2821 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2822 2) For AcpiExec (and for debugging), the macros can optionally be
2824 to the local ACPICA interfaces that track each allocation (local tracking
2825 is used to immediately detect memory leaks).
2828 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2829 to predefine this macro to either TRUE or FALSE during the system build.
2831 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2833 Example Code and Data Size: These are the sizes for the OS-independent
2834 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2835 debug version of the code includes the debug output trace mechanism and
2836 has a much larger code and data size.
2839 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2840 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2842 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2843 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2846 2) iASL Compiler/Disassembler and Tools:
2848 iASL: Implemented wildcard support for the -e option. This simplifies use
2849 when there are many SSDTs that must be included to resolve external
2851 declarations. ACPICA BZ 1041. Example:
2852 iasl -e ssdt*.dat -d dsdt.dat
2854 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
2855 adds a portable module that implements full history and limited line
2856 editing for Unix and Linux systems. It does not use readline() due to
2857 portability issues. Instead it uses the POSIX termio interface to put the
2858 terminal in raw input mode so that the various special keys can be
2860 (such as up/down-arrow for history support and left/right-arrow for line
2861 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
2863 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
2864 one or more spaces. This provides compatible with early or different
2865 versions of the AcpiDump utility. ACPICA BZ 1044.
2867 AcpiDump: Do not ignore tables that contain only an ACPI table header.
2868 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
2869 no other data. This change adds support to dump these tables. Any tables
2870 shorter than the length of an ACPI table header remain in error (an error
2871 message is emitted). Reported by Yi Li.
2873 Debugger: Echo actual command along with the "unknown command" message.
2875 ----------------------------------------
2876 23 August 2013. Summary of changes for version 20130823:
2878 1) ACPICA kernel-resident subsystem:
2880 Implemented support for host-installed System Control Interrupt (SCI)
2881 handlers. Certain ACPI functionality requires the host to handle raw
2882 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2883 state support requires the host device driver to handle SCIs to examine
2884 if the doorbell has been activated. Multiple SCI handlers can be
2885 installed to allow for future expansion. New external interfaces are
2886 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2887 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2889 Operation region support: Never locally free the handler "context"
2890 pointer. This change removes some dangerous code that attempts to free
2891 the handler context pointer in some (rare) circumstances. The owner of
2892 the handler owns this pointer and the ACPICA code should never touch it.
2893 Although not seen to be an issue in any kernel, it did show up as a
2894 problem (fault) under AcpiExec. Also, set the internal storage field for
2895 the context pointer to zero when the region is deactivated, simply for
2896 sanity. David Box. ACPICA BZ 1039.
2898 AcpiRead: On error, do not modify the return value target location. If an
2899 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2900 modify the target of the return value pointer. Makes the code consistent
2901 with the rest of ACPICA. Bjorn Helgaas.
2903 Example Code and Data Size: These are the sizes for the OS-independent
2904 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2905 debug version of the code includes the debug output trace mechanism and
2906 has a much larger code and data size.
2909 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2910 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2912 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2913 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2916 2) iASL Compiler/Disassembler and Tools:
2918 AcpiDump: Implemented several new features and fixed some problems:
2919 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2920 2) Added support for multiple table instances (SSDT, UEFI).
2921 3) Added option to dump "customized" (overridden) tables (-c).
2922 4) Fixed a problem where some table filenames were improperly
2924 5) Improved some error messages, removed some unnecessary messages.
2926 iASL: Implemented additional support for disassembly of ACPI tables that
2927 contain invocations of external control methods. The -fe<file> option
2928 allows the import of a file that specifies the external methods along
2929 with the required number of arguments for each -- allowing for the
2930 correct disassembly of the table. This is a workaround for a limitation
2931 of AML code where the disassembler often cannot determine the number of
2932 arguments required for an external control method and generates incorrect
2933 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2935 Debugger: Implemented a new command (paths) that displays the full
2936 pathnames (namepaths) and object types of all objects in the namespace.
2937 This is an alternative to the namespace command.
2939 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2940 mechanism and any installed handlers.
2942 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2943 This can occur if there are too many parent prefixes in a namepath (for
2944 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2946 Application OSLs: Set the return value for the PCI read functions. These
2947 functions simply return AE_OK, but should set the return value to zero
2948 also. This change implements this. ACPICA BZ 1038.
2950 Debugger: Prevent possible command line buffer overflow. Increase the
2951 size of a couple of the debugger line buffers, and ensure that overflow
2952 cannot happen. ACPICA BZ 1037.
2954 iASL: Changed to abort immediately on serious errors during the parsing
2955 phase. Due to the nature of ASL, there is no point in attempting to
2956 compile these types of errors, and they typically end up causing a
2957 cascade of hundreds of errors which obscure the original problem.
2959 ----------------------------------------
2960 25 July 2013. Summary of changes for version 20130725:
2962 1) ACPICA kernel-resident subsystem:
2964 Fixed a problem with the DerefOf operator where references to FieldUnits
2965 and BufferFields incorrectly returned the parent object, not the actual
2966 value of the object. After this change, a dereference of a FieldUnit
2967 reference results in a read operation on the field to get the value, and
2968 likewise, the appropriate BufferField value is extracted from the target
2971 Fixed a problem where the _WAK method could cause a fault under these
2972 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2973 method returned no value. The problem is rarely seen because most kernels
2974 run ACPICA in slack mode.
2976 For the DerefOf operator, a fatal error now results if an attempt is made
2977 to dereference a reference (created by the Index operator) to a NULL
2978 package element. Provides compatibility with other ACPI implementations,
2979 and this behavior will be added to a future version of the ACPI
2982 The ACPI Power Management Timer (defined in the FADT) is now optional.
2983 This provides compatibility with other ACPI implementations and will
2984 appear in the next version of the ACPI specification. If there is no PM
2985 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2986 zero in the FADT indicates no PM timer.
2988 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2989 allows the host to globally enable/disable all vendor strings, all
2990 feature strings, or both. Intended to be primarily used for debugging
2991 purposes only. Lv Zheng.
2993 Expose the collected _OSI data to the host via a global variable. This
2994 data tracks the highest level vendor ID that has been invoked by the BIOS
2995 so that the host (and potentially ACPICA itself) can change behaviors
2996 based upon the age of the BIOS.
2998 Example Code and Data Size: These are the sizes for the OS-independent
2999 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3000 debug version of the code includes the debug output trace mechanism and
3001 has a much larger code and data size.
3004 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3005 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3007 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3008 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3011 2) iASL Compiler/Disassembler and Tools:
3013 iASL: Created the following enhancements for the -so option (create
3015 1)Add offsets for the last nameseg in each namepath for every supported
3017 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3018 3)Add the actual AML opcode for the parent object of every supported
3020 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3022 Disassembler: Emit all unresolved external symbols in a single block.
3023 These are external references to control methods that could not be
3024 resolved, and thus, the disassembler had to make a guess at the number of
3027 iASL: The argument to the -T option (create table template) is now
3028 optional. If not specified, the default table is a DSDT, typically the
3031 ----------------------------------------
3032 26 June 2013. Summary of changes for version 20130626:
3034 1) ACPICA kernel-resident subsystem:
3036 Fixed an issue with runtime repair of the _CST object. Null or invalid
3037 elements were not always removed properly. Lv Zheng.
3039 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3040 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3041 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3042 makes the system-wide number of GPEs essentially unlimited.
3044 Example Code and Data Size: These are the sizes for the OS-independent
3045 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3046 debug version of the code includes the debug output trace mechanism and
3047 has a much larger code and data size.
3050 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3051 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3053 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3054 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3057 2) iASL Compiler/Disassembler and Tools:
3059 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3060 hosts. Now supports Linux, FreeBSD, and Windows.
3062 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3063 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3065 iASL/Preprocessor: Implemented full support for nested
3066 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3068 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3069 max. The original purpose of this constraint was to limit the amount of
3070 debug output. However, the string function in question (UtPrintString) is
3071 now used for the disassembler also, where 256 bytes is insufficient.
3072 Reported by RehabMan@GitHub.
3074 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3075 tables. ACPICA BZ 999. Lv Zheng.
3077 iASL: Fixed a couple of error exit issues that could result in a "Could
3078 not delete <file>" message during ASL compilation.
3080 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3081 the actual signatures for these tables are "FACP" and "APIC",
3084 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3085 tables are allowed to have multiple instances.
3087 ----------------------------------------
3088 17 May 2013. Summary of changes for version 20130517:
3090 1) ACPICA kernel-resident subsystem:
3092 Fixed a regression introduced in version 20130328 for _INI methods. This
3093 change fixes a problem introduced in 20130328 where _INI methods are no
3094 longer executed properly because of a memory block that was not
3095 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3096 <tomasz.nowicki@linaro.org>.
3098 Fixed a possible problem with the new extended sleep registers in the
3100 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3101 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3104 Implemented return value repair code for _CST predefined objects: Sort
3106 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3108 Implemented a debug-only option to disable loading of SSDTs from the
3109 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3110 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3111 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3113 Fixed some issues in the ACPICA initialization and termination code:
3114 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3115 1) Clear events initialized flag upon event component termination. ACPICA
3117 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3118 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3119 4) Clear debug buffer global on termination to prevent possible multiple
3120 delete. ACPICA BZ 1010.
3122 Standardized all switch() blocks across the entire source base. After
3124 years, different formatting for switch() had crept in. This change makes
3125 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3127 Split some files to enhance ACPICA modularity and configurability:
3128 1) Split buffer dump routines into utilities/utbuffer.c
3129 2) Split internal error message routines into utilities/uterror.c
3130 3) Split table print utilities into tables/tbprint.c
3131 4) Split iASL command-line option processing into asloptions.c
3133 Makefile enhancements:
3134 1) Support for all new files above.
3135 2) Abort make on errors from any subcomponent. Chao Guan.
3136 3) Add build support for Apple Mac OS X. Liang Qi.
3138 Example Code and Data Size: These are the sizes for the OS-independent
3139 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3140 debug version of the code includes the debug output trace mechanism and
3141 has a much larger code and data size.
3144 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3145 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3147 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3148 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3151 2) iASL Compiler/Disassembler and Tools:
3153 New utility: Implemented an easily portable version of the acpidump
3154 utility to extract ACPI tables from the system (or a file) in an ASCII
3156 dump format. The top-level code implements the various command line
3157 options, file I/O, and table dump routines. To port to a new host, only
3158 three functions need to be implemented to get tables -- since this
3159 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3160 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3161 1) The Windows version obtains the ACPI tables from the Registry.
3162 2) The Linux version is under development.
3163 3) Other hosts - If an OS-dependent module is submitted, it will be
3164 distributed with ACPICA.
3166 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3167 restructuring/change to the initialization sequence caused this option to
3168 no longer work properly.
3170 iASL: Implemented a mechanism to disable specific warnings and remarks.
3171 Adds a new command line option, "-vw <messageid> as well as "#pragma
3172 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3174 iASL: Fix for too-strict package object validation. The package object
3175 validation for return values from the predefined names is a bit too
3176 strict, it does not allow names references within the package (which will
3177 be resolved at runtime.) These types of references cannot be validated at
3178 compile time. This change ignores named references within package objects
3179 for names that return or define static packages.
3181 Debugger: Fixed the 80-character command line limitation for the History
3182 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3184 iASL: Added control method and package support for the -so option
3185 (generates AML offset table for BIOS support.)
3187 iASL: issue a remark if a non-serialized method creates named objects. If
3188 a thread blocks within the method for any reason, and another thread
3189 enters the method, the method will fail because an attempt will be made
3191 create the same (named) object twice. In this case, issue a remark that
3192 the method should be marked serialized. NOTE: may become a warning later.
3195 ----------------------------------------
3196 18 April 2013. Summary of changes for version 20130418:
3198 1) ACPICA kernel-resident subsystem:
3200 Fixed a possible buffer overrun during some rare but specific field unit
3201 read operations. This overrun can only happen if the DSDT version is 1 --
3202 meaning that all AML integers are 32 bits -- and the field length is
3203 between 33 and 55 bits long. During the read, an internal buffer object
3205 created for the field unit because the field is larger than an integer
3207 bits). However, in this case, the buffer will be incorrectly written
3208 beyond the end because the buffer length is less than the internal
3210 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3211 long, but a full 8 bytes will be written.
3213 Updated the Embedded Controller "orphan" _REG method support. This refers
3214 to _REG methods under the EC device that have no corresponding operation
3215 region. This is allowed by the ACPI specification. This update removes a
3216 dependency on the existence an ECDT table. It will execute an orphan _REG
3217 method as long as the operation region handler for the EC is installed at
3218 the EC device node and not the namespace root. Rui Zhang (original
3219 update), Bob Moore (update/integrate).
3221 Implemented run-time argument typechecking for all predefined ACPI names
3222 (_STA, _BIF, etc.) This change performs object typechecking on all
3223 incoming arguments for all predefined names executed via
3224 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3225 passing correct object types as well as the correct number of arguments
3226 (therefore identifying any issues immediately). Also, the ASL/namespace
3227 definition of the predefined name is checked against the ACPI
3228 specification for the proper argument count. Adds one new file,
3231 Changed an exception code for the ASL UnLoad() operator. Changed the
3232 exception code for the case where the input DdbHandle is invalid, from
3233 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3235 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3236 global makefile. The use of this flag causes compiler errors on earlier
3237 versions of GCC, so it has been removed for compatibility.
3239 Miscellaneous cleanup:
3240 1) Removed some unused/obsolete macros
3241 2) Fixed a possible memory leak in the _OSI support
3242 3) Removed an unused variable in the predefined name support
3243 4) Windows OSL: remove obsolete reference to a memory list field
3245 Example Code and Data Size: These are the sizes for the OS-independent
3246 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3247 debug version of the code includes the debug output trace mechanism and
3248 has a much larger code and data size.
3251 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3252 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3254 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3255 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3258 2) iASL Compiler/Disassembler and Tools:
3260 AcpiExec: Added installation of a handler for the SystemCMOS address
3261 space. This prevents control method abort if a method accesses this
3264 AcpiExec: Added support for multiple EC devices, and now install EC
3265 operation region handler(s) at the actual EC device instead of the
3266 namespace root. This reflects the typical behavior of host operating
3269 AcpiExec: Updated to ensure that all operation region handlers are
3270 installed before the _REG methods are executed. This prevents a _REG
3271 method from aborting if it accesses an address space has no handler.
3272 AcpiExec installs a handler for every possible address space.
3274 Debugger: Enhanced the "handlers" command to display non-root handlers.
3275 This change enhances the handlers command to display handlers associated
3276 with individual devices throughout the namespace, in addition to the
3277 currently supported display of handlers associated with the root
3281 ASL Test Suite: Several test suite errors have been identified and
3282 resolved, reducing the total error count during execution. Chao Guan.
3284 ----------------------------------------
3285 28 March 2013. Summary of changes for version 20130328:
3287 1) ACPICA kernel-resident subsystem:
3289 Fixed several possible race conditions with the internal object reference
3290 counting mechanism. Some of the external ACPICA interfaces update object
3291 reference counts without holding the interpreter or namespace lock. This
3292 change adds a spinlock to protect reference count updates on the internal
3293 ACPICA objects. Reported by and with assistance from Andriy Gapon
3296 FADT support: Removed an extraneous warning for very large GPE register
3297 sets. This change removes a size mismatch warning if the legacy length
3298 field for a GPE register set is larger than the 64-bit GAS structure can
3299 accommodate. GPE register sets can be larger than the 255-bit width
3300 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3302 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3303 return from this interface. Handles a possible timeout case if
3304 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3305 "forever". Jung-uk Kim.
3307 Predefined name support: Add allowed/required argument type information
3309 the master predefined info table. This change adds the infrastructure to
3310 enable typechecking on incoming arguments for all predefined
3311 methods/objects. It does not actually contain the code that will fully
3312 utilize this information, this is still under development. Also condenses
3313 some duplicate code for the predefined names into a new module,
3314 utilities/utpredef.c
3316 Example Code and Data Size: These are the sizes for the OS-independent
3317 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3318 debug version of the code includes the debug output trace mechanism and
3319 has a much larger code and data size.
3322 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3323 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3325 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3326 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3329 2) iASL Compiler/Disassembler and Tools:
3331 iASL: Implemented a new option to simplify the development of ACPI-
3333 BIOS code. Adds support for a new "offset table" output file. The -so
3334 option will create a C table containing the AML table offsets of various
3335 named objects in the namespace so that BIOS code can modify them easily
3337 boot time. This can simplify BIOS runtime code by eliminating expensive
3338 searches for "magic values", enhancing boot times and adding greater
3339 reliability. With assistance from Lee Hamel.
3341 iASL: Allow additional predefined names to return zero-length packages.
3342 Now, all predefined names that are defined by the ACPI specification to
3343 return a "variable-length package of packages" are allowed to return a
3344 zero length top-level package. This allows the BIOS to tell the host that
3345 the requested feature is not supported, and supports existing BIOS/ASL
3348 iASL: Changed the "result not used" warning to an error. This is the case
3349 where an ASL operator is effectively a NOOP because the result of the
3350 operation is not stored anywhere. For example:
3352 There is no target (missing 3rd argument), nor is the function return
3353 value used. This is potentially a very serious problem -- since the code
3354 was probably intended to do something, but for whatever reason, the value
3355 was not stored. Therefore, this issue has been upgraded from a warning to
3358 AcpiHelp: Added allowable/required argument types to the predefined names
3359 info display. This feature utilizes the recent update to the predefined
3360 names table (above).
3362 ----------------------------------------
3363 14 February 2013. Summary of changes for version 20130214:
3365 1) ACPICA Kernel-resident Subsystem:
3367 Fixed a possible regression on some hosts: Reinstated the safe return
3368 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3369 evaluated only once. Although these macros are not needed for the ACPICA
3370 code itself, they are often used by ACPI-related host device drivers
3372 the safe feature may be necessary.
3374 Fixed several issues related to the ACPI 5.0 reduced hardware support
3375 (SOC): Now ensure that if the platform declares itself as hardware-
3377 via the FADT, the following functions become NOOPs (and always return
3378 AE_OK) because ACPI is always enabled by definition on these machines:
3384 Dynamic Object Repair: Implemented additional runtime repairs for
3385 predefined name return values. Both of these repairs can simplify code in
3386 the related device drivers that invoke these methods:
3387 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3388 string to a Unicode buffer.
3389 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3391 lone end tag descriptor in the following cases: A Return(0) was executed,
3392 a null buffer was returned, or no object at all was returned (non-slack
3393 mode only). Adds a new file, nsconvert.c
3394 ACPICA BZ 998. Bob Moore, Lv Zheng.
3396 Resource Manager: Added additional code to prevent possible infinite
3398 while traversing corrupted or ill-formed resource template buffers. Check
3399 for zero-length resource descriptors in all code that loops through
3400 resource templates (the length field is used to index through the
3401 template). This change also hardens the external AcpiWalkResources and
3402 AcpiWalkResourceBuffer interfaces.
3404 Local Cache Manager: Enhanced the main data structure to eliminate an
3405 unnecessary mechanism to access the next object in the list. Actually
3406 provides a small performance enhancement for hosts that use the local
3407 ACPICA cache manager. Jung-uk Kim.
3409 Example Code and Data Size: These are the sizes for the OS-independent
3410 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3411 debug version of the code includes the debug output trace mechanism and
3412 has a much larger code and data size.
3415 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3416 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3418 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3419 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3422 2) iASL Compiler/Disassembler and Tools:
3424 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3425 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3426 that were made to the ACPI 5.0 specification.
3428 iASL/Disassembler: Added full support for the following new ACPI tables:
3429 1) The MTMR table (MID Timer Table)
3430 2) The VRTC table (Virtual Real Time Clock Table).
3431 Includes header file, disassembler, table compiler, and template support
3434 iASL: Implemented compile-time validation of package objects returned by
3435 predefined names. This new feature validates static package objects
3436 returned by the various predefined names defined to return packages. Both
3437 object types and package lengths are validated, for both parent packages
3438 and sub-packages, if any. The code is similar in structure and behavior
3440 the runtime repair mechanism within the AML interpreter and uses the
3441 existing predefined name information table. Adds a new file, aslprepkg.c.
3444 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3445 This feature detects a binary file with a valid ACPI table header and
3446 invokes the disassembler automatically. Eliminates the need to
3447 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3449 iASL/Disassembler: Added several warnings for the case where there are
3450 unresolved control methods during the disassembly. This can potentially
3451 cause errors when the output file is compiled, because the disassembler
3452 assumes zero method arguments in these cases (it cannot determine the
3453 actual number of arguments without resolution/definition of the method).
3455 Debugger: Added support to display all resources with a single command.
3456 Invocation of the resources command with no arguments will now display
3458 resources within the current namespace.
3460 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3463 ----------------------------------------
3464 17 January 2013. Summary of changes for version 20130117:
3466 1) ACPICA Kernel-resident Subsystem:
3468 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3469 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3470 objects to return a package containing one integer, most BIOS code
3472 two integers and the previous code reflects that. However, we also need
3474 support BIOS code that actually implements to the ACPI spec, and this
3475 change reflects this.
3477 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3478 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3479 C compilers that require this support.
3480 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3481 ACPI_DEBUG is already used by many of the various hosts.
3483 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3484 copyright to all module headers and signons, including the standard Linux
3485 header. This affects virtually every file in the ACPICA core subsystem,
3486 iASL compiler, all ACPICA utilities, and the test suites.
3488 Example Code and Data Size: These are the sizes for the OS-independent
3489 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3490 debug version of the code includes the debug output trace mechanism and
3491 has a much larger code and data size.
3494 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3495 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3497 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3498 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3501 2) iASL Compiler/Disassembler and Tools:
3503 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3504 prevent a possible fault on some hosts. Some C libraries modify the arg
3505 pointer parameter to vfprintf making it difficult to call it twice in the
3506 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3507 does not affect the Windows OSL since the Win C library does not modify
3508 the arg pointer. Chao Guan, Bob Moore.
3510 iASL: Fixed a possible infinite loop when the maximum error count is
3511 reached. If an output file other than the .AML file is specified (such as
3512 a listing file), and the maximum number of errors is reached, do not
3513 attempt to flush data to the output file(s) as the compiler is aborting.
3514 This can cause an infinite loop as the max error count code essentially
3515 keeps calling itself.
3517 iASL/Disassembler: Added an option (-in) to ignore NOOP
3519 Implemented for both the compiler and the disassembler. Often, the NOOP
3520 opcode is used as padding for packages that are changed dynamically by
3522 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3523 errors. This option causes the disassembler to ignore all NOOP opcodes
3524 (0xA3), and it also causes the compiler to ignore all ASL source code
3528 Debugger: Enhanced the Sleep command to execute all sleep states. This
3529 change allows Sleep to be invoked with no arguments and causes the
3530 debugger to execute all of the sleep states, 0-5, automatically.
3532 ----------------------------------------
3533 20 December 2012. Summary of changes for version 20121220:
3535 1) ACPICA Kernel-resident Subsystem:
3537 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3538 alternate entry point for AcpiWalkResources and improves the usability of
3539 the resource manager by accepting as input a buffer containing the output
3540 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3541 input buffer is not deleted by this interface so that it can be used by
3542 the host later. See the ACPICA reference for details.
3544 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3545 (DSDT version < 2). The constant will be truncated and this warning
3546 reflects that behavior.
3548 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3549 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3550 both get and set the new wake bit in these descriptors, separately from
3551 the existing share bit. Reported by Aaron Lu.
3553 Interpreter: Fix Store() when an implicit conversion is not possible. For
3554 example, in the cases such as a store of a string to an existing package
3555 object, implement the store as a CopyObject(). This is a small departure
3556 from the ACPI specification which states that the control method should
3558 aborted in this case. However, the ASLTS suite depends on this behavior.
3560 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3561 macros: check if debug output is currently enabled as soon as possible to
3562 minimize performance impact if debug is in fact not enabled.
3564 Source code restructuring: Cleanup to improve modularity. The following
3565 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3566 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3567 Associated makefiles and project files have been updated.
3569 Changed an exception code for LoadTable operator. For the case where one
3570 of the input strings is too long, change the returned exception code from
3571 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3573 Fixed a possible memory leak in dispatcher error path. On error, delete
3574 the mutex object created during method mutex creation. Reported by
3575 tim.gardner@canonical.com.
3577 Example Code and Data Size: These are the sizes for the OS-independent
3578 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3579 debug version of the code includes the debug output trace mechanism and
3580 has a much larger code and data size.
3583 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3584 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3586 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3587 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3590 2) iASL Compiler/Disassembler and Tools:
3592 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3593 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3594 will not allow the interpreter to differentiate between a method and a
3595 method invocation when these are used as an argument to the ObjectType
3596 operator. The ACPI specification change is to disallow a method
3598 (UserTerm) for the ObjectType operator.
3600 Finish support for the TPM2 and CSRT tables in the headers, table
3601 compiler, and disassembler.
3603 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3604 always expires immediately if the semaphore is not available. The
3606 code was using a relative-time timeout, but sem_timedwait requires the
3608 of an absolute time.
3610 iASL: Added a remark if the Timer() operator is used within a 32-bit
3611 table. This operator returns a 64-bit time value that will be truncated
3612 within a 32-bit table.
3614 iASL Source code restructuring: Cleanup to improve modularity. The
3615 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
3616 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
3620 ----------------------------------------
3621 14 November 2012. Summary of changes for version 20121114:
3623 1) ACPICA Kernel-resident Subsystem:
3625 Implemented a performance enhancement for ACPI/AML Package objects. This
3626 change greatly increases the performance of Package objects within the
3627 interpreter. It changes the processing of reference counts for packages
3629 optimizing for the most common case where the package sub-objects are
3630 either Integers, Strings, or Buffers. Increases the overall performance
3632 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
3634 Chao Guan. ACPICA BZ 943.
3636 Implemented and deployed common macros to extract flag bits from resource
3637 descriptors. Improves readability and maintainability of the code. Fixes
3639 problem with the UART serial bus descriptor for the number of data bits
3640 flags (was incorrectly 2 bits, should be 3).
3642 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
3643 of the macros and changed the SETx macros to the style of (destination,
3644 source). Also added ACPI_CASTx companion macros. Lv Zheng.
3646 Example Code and Data Size: These are the sizes for the OS-independent
3647 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3648 debug version of the code includes the debug output trace mechanism and
3649 has a much larger code and data size.
3652 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3653 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3655 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3656 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3659 2) iASL Compiler/Disassembler and Tools:
3661 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
3662 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
3663 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
3665 Disassembler: Fixed a problem with external declaration generation. Fixes
3666 a problem where an incorrect pathname could be generated for an external
3667 declaration if the original reference to the object includes leading
3668 carats (^). ACPICA BZ 984.
3670 Debugger: Completed a major update for the Disassemble<method> command.
3671 This command was out-of-date and did not properly disassemble control
3672 methods that had any reasonable complexity. This fix brings the command
3674 to the same level as the rest of the disassembler. Adds one new file,
3675 dmdeferred.c, which is existing code that is now common with the main
3676 disassembler and the debugger disassemble command. ACPICA MZ 978.
3678 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
3679 Newer versions of Bison emit this prototype, so moved the prototype out
3681 the iASL header to where it is actually used in order to avoid a
3685 iASL/Tools: Standardized use of the stream I/O functions:
3686 1) Ensure check for I/O error after every fopen/fread/fwrite
3687 2) Ensure proper order of size/count arguments for fread/fwrite
3688 3) Use test of (Actual != Requested) after all fwrite, and most fread
3689 4) Standardize I/O error messages
3690 Improves reliability and maintainability of the code. Bob Moore, Lv
3694 Disassembler: Prevent duplicate External() statements. During generation
3695 of external statements, detect similar pathnames that are actually
3696 duplicates such as these:
3699 Remove all leading '\' characters from pathnames during the external
3700 statement generation so that duplicates will be detected and tossed.
3703 Tools: Replace low-level I/O with stream I/O functions. Replace
3704 open/read/write/close with the stream I/O equivalents
3705 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
3708 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3709 name header so that AcpiXtract recognizes the output file/table.
3711 iASL: Remove obsolete -2 option flag. Originally intended to force the
3712 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3713 and the entire concept is now obsolete.
3715 ----------------------------------------
3716 18 October 2012. Summary of changes for version 20121018:
3719 1) ACPICA Kernel-resident Subsystem:
3721 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3722 introduced by late changes to the table as it was added to the ACPI 5.0
3723 specification. Includes header, disassembler, and data table compiler
3724 support as well as a new version of the MPST template.
3726 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3727 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3728 methods: _HID, _CID, and _UID.
3730 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3731 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3732 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3733 names for their various drivers. Affects the AcpiGetObjectInfo external
3734 interface, and other internal interfaces as well.
3736 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3737 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3738 on machines that support non-aligned transfers. Optimizes for this case
3739 rather than using a strncpy. With assistance from Zheng Lv.
3741 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3742 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3744 Added a new debug print message for AML mutex objects that are force-
3745 released. At control method termination, any currently acquired mutex
3746 objects are force-released. Adds a new debug-only message for each one
3749 Audited/updated all ACPICA return macros and the function debug depth
3750 counter: 1) Ensure that all functions that use the various TRACE macros
3751 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3752 return statements surround the return expression (value) with parens to
3753 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3754 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3756 Global source code changes/maintenance: All extra lines at the start and
3757 end of each source file have been removed for consistency. Also, within
3758 comments, all new sentences start with a single space instead of a double
3759 space, again for consistency across the code base.
3761 Example Code and Data Size: These are the sizes for the OS-independent
3762 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3763 debug version of the code includes the debug output trace mechanism and
3764 has a much larger code and data size.
3767 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3768 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3770 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3771 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3774 2) iASL Compiler/Disassembler and Tools:
3776 AcpiExec: Improved the algorithm used for memory leak/corruption
3777 detection. Added some intelligence to the code that maintains the global
3778 list of allocated memory. The list is now ordered by allocated memory
3779 address, significantly improving performance. When running AcpiExec on
3780 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3781 on the platform and/or the environment. Note, this performance
3782 enhancement affects the AcpiExec utility only, not the kernel-resident
3785 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3786 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3787 incorrect table offset reported for invalid opcodes. Report the original
3788 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3790 Disassembler: Enhanced the -vt option to emit the binary table data in
3791 hex format to assist with debugging.
3793 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3794 size of file structure. Colin Ian King.
3796 ----------------------------------------
3797 13 September 2012. Summary of changes for version 20120913:
3800 1) ACPICA Kernel-resident Subsystem:
3802 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3803 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3807 Table Manager: Merged/removed duplicate code in the root table resize
3808 functions. One function is external, the other is internal. Lv Zheng,
3812 Makefiles: Completely removed the obsolete "Linux" makefiles under
3813 acpica/generate/linux. These makefiles are obsolete and have been
3816 the generic unix makefiles under acpica/generate/unix.
3818 Makefiles: Ensure that binary files always copied properly. Minor rule
3820 to ensure that the final binary output files are always copied up to the
3821 appropriate binary directory (bin32 or bin64.)
3823 Example Code and Data Size: These are the sizes for the OS-independent
3824 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3826 version of the code includes the debug output trace mechanism and has a
3828 larger code and data size.
3831 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3832 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3834 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3835 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3838 2) iASL Compiler/Disassembler and Tools:
3840 Disassembler: Fixed a possible fault during the disassembly of resource
3841 descriptors when a second parse is required because of the invocation of
3842 external control methods within the table. With assistance from
3843 adq@lidskialf.net. ACPICA BZ 976.
3845 iASL: Fixed a namepath optimization problem. An error can occur if the
3847 node that contains the namepath to be optimized does not have a parent
3849 that is a named object. This change fixes the problem.
3851 iASL: Fixed a regression where the AML file is not deleted on errors. The
3853 output file should be deleted if there are any errors during the
3856 only exception is if the -f (force output) option is used. ACPICA BZ 974.
3858 iASL: Added a feature to automatically increase internal line buffer
3860 Via realloc(), automatically increase the internal line buffer sizes as
3861 necessary to support very long source code lines. The current version of
3863 preprocessor requires a buffer long enough to contain full source code
3865 This change increases the line buffer(s) if the input lines go beyond the
3866 current buffer size. This eliminates errors that occurred when a source
3868 line was longer than the buffer.
3870 iASL: Fixed a problem with constant folding in method declarations. The
3871 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
3873 Type3 opcode was used.
3875 Debugger: Improved command help support. For incorrect argument count,
3877 full help for the command. For help command itself, allow an argument to
3880 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3881 errors during execution of the suite. Guan Chao.
3883 ----------------------------------------
3884 16 August 2012. Summary of changes for version 20120816:
3887 1) ACPICA Kernel-resident Subsystem:
3889 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3891 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3892 deprecated and will probably be removed from the ACPI specification.
3894 does not invoke them, and reportedly never will. The final nail in the
3896 is that the ACPI specification states that these methods must be run with
3897 interrupts off, which is not going to happen in a kernel interpreter.
3899 Linux has removed all use of the methods also. It was discovered that
3900 invoking these functions caused failures on some machines, probably
3902 they were never tested since Windows does not call them. Affects two
3904 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3907 Implemented support for complex bit-packed buffers returned from the _PLD
3908 (Physical Location of Device) predefined method. Adds a new external
3909 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3911 structure. Note: C Bitfields cannot be used for this type of predefined
3912 structure since the memory layout of individual bitfields is not defined
3914 the C language. In addition, there are endian concerns where a compiler
3916 change the bitfield ordering based on the machine type. The new ACPICA
3917 interface eliminates these issues, and should be called after _PLD is
3918 executed. ACPICA BZ 954.
3920 Implemented a change to allow a scope change to root (via "Scope (\)")
3922 execution of module-level ASL code (code that is executed at table load
3925 Added the Windows8/Server2012 string for the _OSI method. This change
3928 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3931 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3933 and CSRT (Core System Resource Table).
3935 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3936 names. This simplifies access to the buffers returned by these predefined
3937 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3939 GPE support: Removed an extraneous parameter from the various low-level
3940 internal GPE functions. Tang Feng.
3942 Removed the linux makefiles from the unix packages. The generate/linux
3943 makefiles are obsolete and have been removed from the unix tarball
3945 packages. The replacement makefiles are under generate/unix, and there is
3947 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3949 Updates for Unix makefiles:
3950 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3951 2) Update linker flags (move to end of command line) for AcpiExec
3955 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3956 utxface.c to improve modularity and reduce file size.
3958 Example Code and Data Size: These are the sizes for the OS-independent
3959 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3960 debug version of the code includes the debug output trace mechanism and
3962 much larger code and data size.
3965 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3966 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3968 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3969 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3972 2) iASL Compiler/Disassembler and Tools:
3974 iASL: Fixed a problem with constant folding for fixed-length constant
3975 expressions. The constant-folding code was not being invoked for constant
3976 expressions that allow the use of type 3/4/5 opcodes to generate
3978 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3980 in the generation of invalid AML bytecode. ACPICA BZ 970.
3982 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3983 apparently automatically emit some of the necessary externals. This
3985 handles these versions in order to eliminate generation warnings.
3987 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3989 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3991 within comments in the output file.
3993 Debugger: Fixed a regression with the "Threads" command where
3994 AE_BAD_PARAMETER was always returned.
3996 ----------------------------------------
3997 11 July 2012. Summary of changes for version 20120711:
3999 1) ACPICA Kernel-resident Subsystem:
4001 Fixed a possible fault in the return package object repair code. Fixes a
4002 problem that can occur when a lone package object is wrapped with an
4004 package object in order to force conformance to the ACPI specification.
4006 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4010 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4011 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4012 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4014 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4016 Intel and other vendors. (for Intel: ICH4-M and earlier)
4018 This change removes the code to disable/enable bus master arbitration
4020 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4022 resume problems on some machines. The change has been in use for over
4026 Implemented two new external interfaces to support host-directed dynamic
4028 table load and unload. They are intended to simplify the host
4030 of hot-plug support:
4031 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4032 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4034 See the ACPICA reference for additional details. Adds one new file,
4035 components/tables/tbxfload.c
4037 Implemented and deployed two new interfaces for errors and warnings that
4039 known to be caused by BIOS/firmware issues:
4040 AcpiBiosError: Prints "ACPI Firmware Error" message.
4041 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4042 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4044 and FADT errors. Additional deployment to be completed as appropriate in
4046 future. The associated conditional macros are ACPI_BIOS_ERROR and
4047 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4052 Implicit notify support: ensure that no memory allocation occurs within a
4053 critical region. This fix moves a memory allocation outside of the time
4055 spinlock is held. Fixes issues on systems that do not allow this
4059 Split exception code utilities and tables into a new file,
4062 Example Code and Data Size: These are the sizes for the OS-independent
4063 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4065 version of the code includes the debug output trace mechanism and has a
4067 larger code and data size.
4070 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4071 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4073 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4074 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4077 2) iASL Compiler/Disassembler and Tools:
4079 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4083 Debugger: Enhanced the "tables" command to emit additional information
4085 the current set of ACPI tables, including the owner ID and flags decode.
4087 Debugger: Reimplemented the "unload" command to use the new
4088 AcpiUnloadParentTable external interface. This command was disable
4090 due to need for an unload interface.
4092 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4094 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4096 ----------------------------------------
4097 20 June 2012. Summary of changes for version 20120620:
4100 1) ACPICA Kernel-resident Subsystem:
4102 Implemented support to expand the "implicit notify" feature to allow
4104 devices to be notified by a single GPE. This feature automatically
4106 runtime device notification in the absence of a BIOS-provided GPE control
4107 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4109 provided by ACPICA for Windows compatibility, and is a workaround for
4112 code errors. See the description of the AcpiSetupGpeForWake interface in
4114 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4116 Changed some comments and internal function names to simplify and ensure
4117 correctness of the Linux code translation. No functional changes.
4119 Example Code and Data Size: These are the sizes for the OS-independent
4120 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4122 version of the code includes the debug output trace mechanism and has a
4124 larger code and data size.
4127 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4128 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4130 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4131 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4134 2) iASL Compiler/Disassembler and Tools:
4136 Disassembler: Added support to emit short, commented descriptions for the
4138 predefined names in order to improve the readability of the disassembled
4139 output. ACPICA BZ 959. Changes include:
4140 1) Emit descriptions for all standard predefined names (_INI, _STA,
4143 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4144 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4147 AcpiSrc: Fixed several long-standing Linux code translation issues.
4149 descriptions in function headers are now translated properly to lower
4152 underscores. ACPICA BZ 961. Also fixes translation problems such as
4158 local_fADT -> local_FADT
4159 execute_oSI -> execute_OSI
4161 iASL: Fixed a problem where null bytes were inadvertently emitted into
4165 iASL: Added the existing debug options to the standard help screen. There
4167 no longer two different help screens. ACPICA BZ 957.
4169 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4171 expand some of the descriptions where appropriate.
4173 iASL: Fixed the -ot option (display compile times/statistics). Was not
4175 properly for standard output; only worked for the debug file case.
4177 ----------------------------------------
4178 18 May 2012. Summary of changes for version 20120518:
4181 1) ACPICA Core Subsystem:
4183 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4185 to block until asynchronous events such as notifies and GPEs have
4187 Within ACPICA, it is only called before a notify or GPE handler is
4188 removed/uninstalled. It also may be useful for the host OS within related
4189 drivers such as the Embedded Controller driver. See the ACPICA reference
4191 additional information. ACPICA BZ 868.
4193 ACPI Tables: Added a new error message for a possible overflow failure
4195 the conversion of FADT 32-bit legacy register addresses to internal
4198 bit GAS structure representation. The GAS has a one-byte "bit length"
4200 thus limiting the register length to 255 bits. ACPICA BZ 953.
4202 Example Code and Data Size: These are the sizes for the OS-independent
4203 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4205 version of the code includes the debug output trace mechanism and has a
4207 larger code and data size.
4210 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4211 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4213 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4214 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4217 2) iASL Compiler/Disassembler and Tools:
4219 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4221 This keyword was added late in the ACPI 5.0 release cycle and was not
4222 implemented until now.
4224 Disassembler: Added support for Operation Region externals. Adds missing
4225 support for operation regions that are defined in another table, and
4226 referenced locally via a Field or BankField ASL operator. Now generates
4228 correct External statement.
4230 Disassembler: Several additional fixes for the External() statement
4232 related to some ASL operators. Also, order the External() statements
4233 alphabetically in the disassembler output. Fixes the External()
4236 the Create* field, Alias, and Scope operators:
4237 1) Create* buffer field operators - fix type mismatch warning on
4239 2) Alias - implement missing External support
4240 3) Scope - fix to make sure all necessary externals are emitted.
4242 iASL: Improved pathname support. For include files, merge the prefix
4244 with the file pathname and eliminate unnecessary components. Convert
4245 backslashes in all pathnames to forward slashes, for readability. Include
4247 pathname changes affect both #include and Include() type operators.
4249 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4251 of a valid line by inserting a newline and then returning the EOF during
4253 next call to GetNextLine. Prevents the line from being ignored due to EOF
4256 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4258 and Warning messages are now correctly recognized for both the source
4260 browser and the global error and warning counts.
4262 ----------------------------------------
4263 20 April 2012. Summary of changes for version 20120420:
4266 1) ACPICA Core Subsystem:
4268 Implemented support for multiple notify handlers. This change adds
4271 allow multiple system and device notify handlers on Device, Thermal Zone,
4273 Processor objects. This can simplify the host OS notification
4275 Also re-worked and restructured the entire notify support code to
4277 handler installation, handler removal, notify event queuing, and notify
4278 dispatch to handler(s). Note: there can still only be two global notify
4279 handlers - one for system notifies and one for device notifies. There are
4281 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4282 Moore, Rafael Wysocki.
4284 Fixed a regression in the package repair code where the object reference
4285 count was calculated incorrectly. Regression was introduced in the commit
4286 "Support to add Package wrappers".
4288 Fixed a couple possible memory leaks in the AML parser, in the error
4290 path. Jesper Juhl, Lin Ming.
4292 Example Code and Data Size: These are the sizes for the OS-independent
4293 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4294 debug version of the code includes the debug output trace mechanism and
4296 much larger code and data size.
4299 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4300 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4302 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4303 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4306 2) iASL Compiler/Disassembler and Tools:
4308 iASL: Fixed a problem with the resource descriptor support where the
4310 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4311 included in cumulative descriptor offset, resulting in incorrect values
4313 resource tags within resource descriptors appearing after a
4315 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4317 iASL and Preprocessor: Implemented full support for the #line directive
4319 correctly track original source file line numbers through the .i
4321 output file - for error and warning messages.
4323 iASL: Expand the allowable byte constants for address space IDs.
4325 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4326 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4328 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4330 iASL: Add option to completely disable the preprocessor (-Pn).
4332 iASL: Now emit all error/warning messages to standard error (stderr) by
4333 default (instead of the previous stdout).
4335 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4337 for resource descriptor offset fix above. Update/cleanup error output
4338 routines. Enable and send iASL errors/warnings to an error logfile
4339 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4341 several extraneous "unrecognized operator" messages.
4343 ----------------------------------------
4344 20 March 2012. Summary of changes for version 20120320:
4347 1) ACPICA Core Subsystem:
4349 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4350 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4352 does not execute these methods, and therefore these methods are often
4353 untested. It has been seen on some systems where the execution of these
4354 methods causes errors and also prevents the machine from entering S5. It
4356 therefore suggested that host operating systems do not execute these
4358 by default. In the future, perhaps these methods can be optionally
4360 based on the age of the system and/or what is the newest version of
4362 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4364 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4367 Fixed a problem where the length of the local/common FADT was set too
4369 The local FADT table length cannot be set to the common length until the
4370 original length has been examined. There is code that checks the table
4372 and sets various fields appropriately. This can affect older machines
4374 early FADT versions. For example, this can cause inadvertent writes to
4376 CST_CNT register. Julian Anastasov.
4378 Fixed a mapping issue related to a physical table override. Use the
4380 mapping mechanism for tables loaded via the physical override OSL
4382 This allows for early mapping before the virtual memory manager is
4384 Thomas Renninger, Bob Moore.
4386 Enhanced the automatic return-object repair code: Repair a common problem
4388 predefined methods that are defined to return a variable-length Package
4390 sub-objects. If there is only one sub-object, some BIOS ASL code
4392 simply returns the single object instead of a Package with one sub-
4394 This new support will repair this error by wrapping a Package object
4396 the original object, creating the correct and expected Package with one
4398 object. Names that can be repaired in this manner include: _ALR, _CSD,
4400 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4403 Changed the exception code returned for invalid ACPI paths passed as
4404 parameters to external interfaces such as AcpiEvaluateObject. Was
4405 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4407 Example Code and Data Size: These are the sizes for the OS-independent
4408 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4410 version of the code includes the debug output trace mechanism and has a
4412 larger code and data size.
4415 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4416 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4418 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4419 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4422 2) iASL Compiler/Disassembler and Tools:
4424 iASL: Added the infrastructure and initial implementation of a integrated
4426 like preprocessor. This will simplify BIOS development process by
4428 the need for a separate preprocessing step during builds. On Windows, it
4430 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4431 features including full #define() macro support are still under
4433 These preprocessor directives are supported:
4446 In addition, these new command line options are supported:
4447 -D <symbol> Define symbol for preprocessor use
4448 -li Create preprocessed output file (*.i)
4449 -P Preprocess only and create preprocessor output file (*.i)
4451 Table Compiler: Fixed a problem where the equals operator within an
4453 did not work properly.
4455 Updated iASL to use the current versions of Bison/Flex. Updated the
4457 project file to invoke these tools from the standard location. ACPICA BZ
4460 Flex for Windows: V2.5.4
4461 Bison for Windows: V2.4.1
4463 ----------------------------------------
4464 15 February 2012. Summary of changes for version 20120215:
4467 1) ACPICA Core Subsystem:
4469 There have been some major changes to the sleep/wake support code, as
4470 described below (a - e).
4472 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4473 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4474 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4476 time the _BFS method is called and the _WAK method is called. NOTE: all
4478 must update their wake/resume code or else sleep/wake will not work
4482 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4484 method. Some machines require that the GPEs are enabled before the _WAK
4486 is executed. Thomas Renninger.
4488 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4490 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4492 determine whether the system is rebooting or resuming. Matthew Garrett.
4494 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4496 match the ACPI specification requirement. Rafael Wysocki.
4498 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4499 registers within the V5 FADT. This support adds two new files:
4500 hardware/hwesleep.c implements the support for the new registers. Moved
4502 sleep/wake external interfaces to hardware/hwxfsleep.c.
4505 Added a new OSL interface for ACPI table overrides,
4506 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4507 table via a physical address, instead of the logical address required by
4508 AcpiOsTableOverride. This simplifies the host implementation. Initial
4509 implementation by Thomas Renninger. The ACPICA implementation creates a
4511 shared function for table overrides that attempts both a logical and a
4514 Expanded the OSL memory read/write interfaces to 64-bit data
4515 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4516 transfer support for GAS register structures passed to AcpiRead and
4519 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4521 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4523 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4525 10% of the code and 5% of the static data, and the following hardware
4527 features become unavailable:
4528 PM Event and Control registers
4529 SCI interrupt (and handler)
4531 General Purpose Events (GPEs)
4534 FACS table (Waking vectors and Global Lock)
4536 Updated the unix tarball directory structure to match the ACPICA git
4538 tree. This ensures that the generic unix makefiles work properly (in
4539 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4542 Updated the return value of the _REV predefined method to integer value 5
4544 reflect ACPI 5.0 support.
4546 Moved the external ACPI PM timer interface prototypes to the public
4548 file where they belong.
4550 Example Code and Data Size: These are the sizes for the OS-independent
4551 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4553 version of the code includes the debug output trace mechanism and has a
4555 larger code and data size.
4558 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4559 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4561 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4562 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4565 2) iASL Compiler/Disassembler and Tools:
4567 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4568 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4569 incorrectly displayed.
4571 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4574 ----------------------------------------
4575 11 January 2012. Summary of changes for version 20120111:
4578 1) ACPICA Core Subsystem:
4580 Implemented a new mechanism to allow host device drivers to check for
4582 range conflicts with ACPI Operation Regions. Both SystemMemory and
4584 address spaces are supported. A new external interface,
4585 AcpiCheckAddressRange,
4586 allows drivers to check an address range against the ACPI namespace. See
4588 ACPICA reference for additional details. Adds one new file,
4589 utilities/utaddress.c. Lin Ming, Bob Moore.
4591 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4594 Status registers, update the ACPI 5.0 flags, and update internal data
4595 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4599 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4601 all module headers and signons, including the standard Linux header. This
4602 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4604 all ACPICA utilities.
4606 Example Code and Data Size: These are the sizes for the OS-independent
4607 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4609 version of the code includes the debug output trace mechanism and has a
4611 larger code and data size.
4614 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4615 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4617 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4618 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4621 2) iASL Compiler/Disassembler and Tools:
4623 Disassembler: fixed a problem with the automatic resource tag generation
4624 support. Fixes a problem where the resource tags are inadvertently not
4625 constructed if the table being disassembled contains external references
4627 control methods. Moved the actual construction of the tags to after the
4629 namespace is constructed (after 2nd parse is invoked due to external
4631 method references.) ACPICA BZ 941.
4633 Table Compiler: Make all "generic" operators caseless. These are the
4635 like UINT8, String, etc. Making these caseless improves ease-of-use.
4639 ----------------------------------------
4640 23 November 2011. Summary of changes for version 20111123:
4642 0) ACPI 5.0 Support:
4644 This release contains full support for the ACPI 5.0 specification, as
4647 Reduced Hardware Support:
4648 -------------------------
4650 This support allows for ACPI systems without the usual ACPI hardware.
4652 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
4654 not attempt to initialize or use any of the usual ACPI hardware. Note,
4656 this flag is set, all of the following ACPI hardware is assumed to be not
4657 present and is not initialized or accessed:
4659 General Purpose Events (GPEs)
4660 Fixed Events (PM1a/PM1b and PM Control)
4661 Power Management Timer and Console Buttons (power/sleep)
4662 Real-time Clock Alarm
4664 System Control Interrupt (SCI)
4665 The FACS is assumed to be non-existent
4670 All new tables and updates to existing tables are fully supported in the
4671 ACPICA headers (for use by device drivers), the disassembler, and the
4673 Data Table Compiler. ACPI 5.0 defines these new tables:
4675 BGRT /* Boot Graphics Resource Table */
4676 DRTM /* Dynamic Root of Trust for Measurement table */
4677 FPDT /* Firmware Performance Data Table */
4678 GTDT /* Generic Timer Description Table */
4679 MPST /* Memory Power State Table */
4680 PCCT /* Platform Communications Channel Table */
4681 PMTT /* Platform Memory Topology Table */
4682 RASF /* RAS Feature table */
4684 Operation Regions/SpaceIDs:
4685 ---------------------------
4687 All new operation regions are fully supported by the iASL compiler, the
4688 disassembler, and the ACPICA runtime code (for dispatch to region
4690 The new operation region Space IDs are:
4695 Resource Descriptors:
4696 ---------------------
4698 All new ASL resource descriptors are fully supported by the iASL
4701 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
4703 all new predefined resource tags). New descriptors are:
4712 ASL/AML Operators, New and Modified:
4713 ------------------------------------
4715 One new operator is added, the Connection operator, which is used to
4717 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4719 field objects within an operation region. Several new protocols are
4721 with the AccessAs operator. All are fully supported by the iASL compiler,
4722 disassembler, and runtime ACPICA AML interpreter:
4724 Connection // Declare Field Connection
4726 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4727 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4729 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4730 RawDataBuffer // Data type for Vendor Data
4733 Predefined ASL/AML Objects:
4734 ---------------------------
4736 All new predefined objects/control-methods are supported by the iASL
4738 and the ACPICA runtime validation/repair (arguments and return values.)
4740 predefined names include the following:
4742 Standard Predefined Names (Objects or Control Methods):
4743 _AEI, _CLS, _CPC, _CWS, _DEP,
4744 _DLM, _EVT, _GCP, _CRT, _GWS,
4745 _HRV, _PRE, _PSE, _SRT, _SUB.
4747 Resource Tags (Names used to access individual fields within resource
4749 _DBT, _DPL, _DRS, _END, _FLC,
4750 _IOR, _LIN, _MOD, _PAR, _PHA,
4751 _PIN, _PPI, _POL, _RXL, _SLV,
4752 _SPE, _STB, _TXL, _VEN.
4754 ACPICA External Interfaces:
4755 ---------------------------
4757 Several new interfaces have been defined for use by ACPI-related device
4758 drivers and other host OS services:
4760 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4762 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4763 provided by the BIOS. They are intended to be used in conjunction with
4765 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4766 mutual exclusion with the AML code/interpreter.
4768 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4770 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4772 resource descriptors associated with hardware-reduced platform events,
4774 to the AcpiGetCurrentResources interface.
4776 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4777 operation regions, information about the Connection() object and any
4779 length information is passed to the region handler within the Context
4782 AcpiBufferToResource: This interface converts a raw AML buffer containing
4784 resource template or resource descriptor to the ACPI_RESOURCE internal
4786 suitable for use by device drivers. Can be used by an operation region
4788 to convert the Connection() buffer object into a ACPI_RESOURCE.
4790 Miscellaneous/Tools/TestSuites:
4791 -------------------------------
4793 Support for extended _HID names (Four alpha characters instead of three).
4794 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4795 Support for ACPI 5.0 features in the ASLTS test suite.
4796 Fully updated documentation (ACPICA and iASL reference documents.)
4798 ACPI Table Definition Language:
4799 -------------------------------
4801 Support for this language was implemented and released as a subsystem of
4803 iASL compiler in 2010. (See the iASL compiler User Guide.)
4806 Non-ACPI 5.0 changes for this release:
4807 --------------------------------------
4809 1) ACPICA Core Subsystem:
4811 Fix a problem with operation region declarations where a failure can
4814 the region name and an argument that evaluates to an object (such as the
4815 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4818 Do not abort an ACPI table load if an invalid space ID is found within.
4820 will be caught later if the offending method is executed. ACPICA BZ 925.
4822 Fixed an issue with the FFixedHW space ID where the ID was not always
4823 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4825 Fixed a problem with the 32-bit generation of the unix-specific OSL
4826 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4828 Several changes made to enable generation with the GCC 4.6 compiler.
4832 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4834 field registers out-of-range.
4836 2) iASL Compiler/Disassembler and Tools:
4838 iASL: Implemented the __PATH__ operator, which returns the full pathname
4840 the current source file.
4842 AcpiHelp: Automatically display expanded keyword information for all ASL
4845 Debugger: Add "Template" command to disassemble/dump resource template
4848 Added a new master script to generate and execute the ASLTS test suite.
4849 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
4851 iASL: Fix problem with listing generation during processing of the
4853 operator where AML listing was disabled until the entire Switch block was
4856 iASL: Improve support for semicolon statement terminators. Fix "invalid
4857 character" message for some cases when the semicolon is used. Semicolons
4859 now allowed after every <Term> grammar element. ACPICA BZ 927.
4861 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
4864 Disassembler: Fix problem with disassembly of the DataTableRegion
4866 where an inadvertent "Unhandled deferred opcode" message could be
4869 3) Example Code and Data Size
4871 These are the sizes for the OS-independent acpica.lib produced by the
4872 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4873 includes the debug output trace mechanism and has a much larger code and
4878 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4879 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4881 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4882 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4884 ----------------------------------------
4885 22 September 2011. Summary of changes for version 20110922:
4889 Support for ACPI 5.0 in ACPICA has been underway for several months and
4891 be released at the same time that ACPI 5.0 is officially released.
4893 The ACPI 5.0 specification is on track for release in the next few
4896 1) ACPICA Core Subsystem:
4898 Fixed a problem where the maximum sleep time for the Sleep() operator was
4899 intended to be limited to two seconds, but was inadvertently limited to
4903 Linux and Unix makefiles: Added header file dependencies to ensure
4905 generation of ACPICA core code and utilities. Also simplified the
4907 considerably through the use of the vpath variable to specify search
4911 2) iASL Compiler/Disassembler and Tools:
4913 iASL: Implemented support to check the access length for all fields
4915 access named Resource Descriptor fields. For example, if a resource field
4917 defined to be two bits, a warning is issued if a CreateXxxxField() is
4919 with an incorrect bit length. This is implemented for all current
4921 descriptor names. ACPICA BZ 930.
4923 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4927 iASL: Fixed a couple of issues associated with variable-length package
4928 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4930 VAR_PACKAGE when these are used as a package length. 2) Allow the
4932 opcode (in addition to PACKAGE) when validating object types for
4936 iASL: Emit statistics for all output files (instead of just the ASL input
4938 AML output). Includes listings, hex files, etc.
4940 iASL: Added -G option to the table compiler to allow the compilation of
4942 ACPI tables. The only part of a table that is required is the standard
4947 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4949 which also adds correct 64-bit support. Also, now all output filenames
4951 completely lower case.
4953 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4954 loading table files. A warning is issued for any such tables. The only
4955 exception is an FADT. This also fixes a possible fault when attempting to
4957 non-AML tables. ACPICA BZ 932.
4959 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4961 missing table terminator could cause a fault when using the -p option.
4963 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4966 3) Example Code and Data Size
4968 These are the sizes for the OS-independent acpica.lib produced by the
4969 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4970 includes the debug output trace mechanism and has a much larger code and
4974 Previous Release (VC 9.0):
4975 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4976 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4977 Current Release (VC 9.0):
4978 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4979 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4982 ----------------------------------------
4983 23 June 2011. Summary of changes for version 20110623:
4985 1) ACPI CA Core Subsystem:
4987 Updated the predefined name repair mechanism to not attempt repair of a
4989 return object if a _PSS object is present. We can only sort the _TSS
4991 package if there is no _PSS within the same scope. This is because if
4994 present, the ACPI specification dictates that the _TSS Power Dissipation
4996 is to be ignored, and therefore some BIOSs leave garbage values in the
4998 Power field(s). In this case, it is best to just return the _TSS package
5000 is. Reported by, and fixed with assistance from Fenghua Yu.
5002 Added an option to globally disable the control method return value
5004 and repair. This runtime option can be used to disable return value
5007 this is causing a problem on a particular machine. Also added an option
5009 AcpiExec (-dr) to set this disable flag.
5011 All makefiles and project files: Major changes to improve generation of
5013 tools. ACPICA BZ 912:
5014 Reduce default optimization levels to improve compatibility
5015 For Linux, add strict-aliasing=0 for gcc 4
5016 Cleanup and simplify use of command line defines
5017 Cleanup multithread library support
5018 Improve usage messages
5020 Linux-specific header: update handling of THREAD_ID and pthread. For the
5022 bit case, improve casting to eliminate possible warnings, especially with
5026 Example Code and Data Size: These are the sizes for the OS-independent
5027 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5029 version of the code includes the debug output trace mechanism and has a
5031 larger code and data size.
5033 Previous Release (VC 9.0):
5034 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5035 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5036 Current Release (VC 9.0):
5037 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5038 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5040 2) iASL Compiler/Disassembler and Tools:
5042 With this release, a new utility named "acpihelp" has been added to the
5044 package. This utility summarizes the ACPI specification chapters for the
5046 and AML languages. It generates under Linux/Unix as well as Windows, and
5047 provides the following functionality:
5048 Find/display ASL operator(s) -- with description and syntax.
5049 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5050 Find/display ACPI predefined name(s) -- with description, number
5051 of arguments, and the return value data type.
5052 Find/display AML opcode name(s) -- with opcode, arguments, and
5054 Decode/display AML opcode -- with opcode name, arguments, and
5057 Service Layers: Make multi-thread support configurable. Conditionally
5059 the multi-thread support so that threading libraries will not be linked
5062 necessary. The only tool that requires multi-thread support is AcpiExec.
5064 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5066 Bison appear to want the interface to yyerror to be a const char * (or at
5067 least this is a problem when generating iASL on some systems.) ACPICA BZ
5071 Tools: Fix for systems where O_BINARY is not defined. Only used for
5073 versions of the tools.
5075 ----------------------------------------
5076 27 May 2011. Summary of changes for version 20110527:
5078 1) ACPI CA Core Subsystem:
5080 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5082 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5083 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5084 (PSDT is now obsolete.)
5085 2) We added support for OEMx tables, signature "OEM" plus a fourth
5086 "don't care" character.
5087 3) Valid tables were encountered with a null signature, so we just
5088 gave up on validating the signature, (05/2008).
5089 4) We encountered non-AML tables such as the MADT, which caused
5090 interpreter errors and kernel faults. So now, we once again allow
5091 only SSDT, OEMx, and now, also a null signature. (05/2011).
5093 Added the missing _TDL predefined name to the global name list in order
5095 enable validation. Affects both the core ACPICA code and the iASL
5098 Example Code and Data Size: These are the sizes for the OS-independent
5099 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5101 version of the code includes the debug output trace mechanism and has a
5103 larger code and data size.
5105 Previous Release (VC 9.0):
5106 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5107 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5108 Current Release (VC 9.0):
5109 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5110 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5112 2) iASL Compiler/Disassembler and Tools:
5114 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5116 debugger command line. This adds support beyond simple integers --
5118 Strings, Buffers, and Packages. Includes support for nested packages.
5119 Increased the default command line buffer size to accommodate these
5121 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5123 Debugger/AcpiExec: Implemented support for "default" method arguments for
5125 Execute/Debug command. Now, the debugger will always invoke a control
5127 with the required number of arguments -- even if the command line
5129 none or insufficient arguments. It uses default integer values for any
5131 arguments. Also fixes a bug where only six method arguments maximum were
5132 supported instead of the required seven.
5134 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5136 also return status in order to prevent buffer overruns. See the ACPICA
5137 reference for details and syntax. ACPICA BZ 921
5139 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5140 makefiles to simplify support for the two different but similar parser
5141 generators, bison and yacc.
5143 Updated the generic unix makefile for gcc 4. The default gcc version is
5145 expected to be 4 or greater, since options specific to gcc 4 are used.
5147 ----------------------------------------
5148 13 April 2011. Summary of changes for version 20110413:
5150 1) ACPI CA Core Subsystem:
5152 Implemented support to execute a so-called "orphan" _REG method under the
5154 device. This change will force the execution of a _REG method underneath
5157 device even if there is no corresponding operation region of type
5158 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5159 compatible with Windows behavior. ACPICA BZ 875.
5161 Added more predefined methods that are eligible for automatic NULL
5163 element removal. This change adds another group of predefined names to
5166 of names that can be repaired by having NULL package elements dynamically
5167 removed. This group are those methods that return a single variable-
5169 package containing simple data types such as integers, buffers, strings.
5171 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5174 and _TZD. ACPICA BZ 914.
5176 Split and segregated all internal global lock functions to a new file,
5179 Updated internal address SpaceID for DataTable regions. Moved this
5182 id in preparation for ACPI 5.0 changes that will include some new space
5185 change should not affect user/host code.
5187 Example Code and Data Size: These are the sizes for the OS-independent
5189 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5191 the code includes the debug output trace mechanism and has a much larger
5196 Previous Release (VC 9.0):
5197 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5198 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5199 Current Release (VC 9.0):
5200 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5201 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5203 2) iASL Compiler/Disassembler and Tools:
5205 iASL/DTC: Major update for new grammar features. Allow generic data types
5207 custom ACPI tables. Field names are now optional. Any line can be split
5209 multiple lines using the continuation char (\). Large buffers now use
5211 continuation character(s) and no colon on the continuation lines. See the
5213 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5216 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5218 Since the parser stuffs a "zero" as the return value for these statements
5221 the underlying AML grammar), they were seen as "return with value" by the
5223 semantic checking. They are now seen correctly as "null" return
5226 iASL: Check if a_REG declaration has a corresponding Operation Region.
5228 check for each _REG to ensure that there is in fact a corresponding
5230 region declaration in the same scope. If not, the _REG method is not very
5232 since it probably won't be executed. ACPICA BZ 915.
5234 iASL/DTC: Finish support for expression evaluation. Added a new
5237 that implements c-style operator precedence and parenthesization. ACPICA
5241 Disassembler/DTC: Remove support for () and <> style comments in data
5244 that DTC has full expression support, we don't want to have comment
5247 start with a parentheses or a less-than symbol. Now, only the standard /*
5250 comments are supported, as well as the bracket [] comments.
5252 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5254 headers in the acpidump file. Update the header validation to support
5256 tables. Problem introduced in previous AcpiXtract version in the change
5258 support "wrong checksum" error messages emitted by acpidump utility.
5260 iASL: Add a * option to generate all template files (as a synonym for
5264 "iasl -T *" or "iasl -T ALL".
5266 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5268 abort the compiler on "fatal" errors, simply should abort the current
5270 This allows multiple compiles with a single (possibly wildcard) compiler
5273 ----------------------------------------
5274 16 March 2011. Summary of changes for version 20110316:
5276 1) ACPI CA Core Subsystem:
5278 Fixed a problem caused by a _PRW method appearing at the namespace root
5280 during the setup of wake GPEs. A fault could occur if a _PRW directly
5283 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5285 Implemented support for "spurious" Global Lock interrupts. On some
5287 global lock interrupt can occur without the pending flag being set. Upon
5290 interrupt, we now ensure that a thread is actually waiting for the lock
5292 signaling GL availability. Rafael Wysocki, Bob Moore.
5294 Example Code and Data Size: These are the sizes for the OS-independent
5296 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5298 the code includes the debug output trace mechanism and has a much larger
5303 Previous Release (VC 9.0):
5304 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5305 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5306 Current Release (VC 9.0):
5307 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5308 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5310 2) iASL Compiler/Disassembler and Tools:
5312 Implemented full support for the "SLIC" ACPI table. Includes support in
5314 header files, disassembler, table compiler, and template generator. Bob
5318 AcpiXtract: Correctly handle embedded comments and messages from
5320 Apparently some or all versions of acpidump will occasionally emit a
5323 "Wrong checksum", etc., into the dump file. This was causing problems for
5324 AcpiXtract. ACPICA BZ 905.
5326 iASL: Fix the Linux makefile by removing an inadvertent double file
5330 AcpiExec: Update installation of operation region handlers. Install one
5332 for a user-defined address space. This is used by the ASL test suite
5335 ----------------------------------------
5336 11 February 2011. Summary of changes for version 20110211:
5338 1) ACPI CA Core Subsystem:
5340 Added a mechanism to defer _REG methods for some early-installed
5342 Most user handlers should be installed before call to
5343 AcpiEnableSubsystem.
5344 However, Event handlers and region handlers should be installed after
5345 AcpiInitializeObjects. Override handlers for the "default" regions should
5347 installed early, however. This change executes all _REG methods for the
5348 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5349 chicken/egg issues between them. ACPICA BZ 848.
5351 Implemented an optimization for GPE detection. This optimization will
5353 ignore GPE registers that contain no enabled GPEs -- there is no need to
5354 read the register since this information is available internally. This
5355 becomes more important on machines with a large GPE space. ACPICA
5357 884. Lin Ming. Suggestion from Joe Liu.
5359 Removed all use of the highly unreliable FADT revision field. The
5361 number in the FADT has been found to be completely unreliable and cannot
5363 trusted. Only the actual table length can be used to infer the version.
5365 change updates the ACPICA core and the disassembler so that both no
5367 even look at the FADT version and instead depend solely upon the FADT
5370 Fix an unresolved name issue for the no-debug and no-error-message source
5371 generation cases. The _AcpiModuleName was left undefined in these cases,
5373 it is actually needed as a parameter to some interfaces. Define
5374 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5376 Split several large files (makefiles and project files updated)
5377 utglobal.c -> utdecode.c
5378 dbcomds.c -> dbmethod.c dbnames.c
5379 dsopcode.c -> dsargs.c dscontrol.c
5380 dsload.c -> dsload2.c
5381 aslanalyze.c -> aslbtypes.c aslwalks.c
5383 Example Code and Data Size: These are the sizes for the OS-independent
5384 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5385 debug version of the code includes the debug output trace mechanism and
5387 a much larger code and data size.
5389 Previous Release (VC 9.0):
5390 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5391 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5392 Current Release (VC 9.0):
5393 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5394 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5396 2) iASL Compiler/Disassembler and Tools:
5398 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5399 These are useful C-style macros with the standard definitions. ACPICA
5402 iASL/DTC: Added support for integer expressions and labels. Support for
5404 expressions for all integer fields in all ACPI tables. Support for labels
5406 "generic" portions of tables such as UEFI. See the iASL reference manual.
5408 Debugger: Added a command to display the status of global handlers. The
5409 "handlers" command will display op region, fixed event, and miscellaneous
5410 global handlers. installation status -- and for op regions, whether
5412 or user-installed handler will be used.
5414 iASL: Warn if reserved method incorrectly returns a value. Many
5416 names are defined such that they do not return a value. If implemented as
5418 method, issue a warning if such a name explicitly returns a value. ACPICA
5421 iASL: Added detection of GPE method name conflicts. Detects a conflict
5423 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5425 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5427 iASL/DTC: Fixed a couple input scanner issues with comments and line
5428 numbers. Comment remover could get confused and miss a comment ending.
5430 a problem with line counter maintenance.
5432 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5434 no need to abort on simple errors within a field definition.
5436 Debugger: Simplified the output of the help command. All help output now
5438 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5440 ----------------------------------------
5441 12 January 2011. Summary of changes for version 20110112:
5443 1) ACPI CA Core Subsystem:
5445 Fixed a race condition between method execution and namespace walks that
5447 possibly cause a fault. The problem was apparently introduced in version
5448 20100528 as a result of a performance optimization that reduces the
5451 namespace walks upon method exit by using the delete_namespace_subtree
5452 function instead of the delete_namespace_by_owner function used
5454 Bug is a missing namespace lock in the delete_namespace_subtree function.
5455 dana.myers@oracle.com
5457 Fixed several issues and a possible fault with the automatic "serialized"
5458 method support. History: This support changes a method to "serialized" on
5460 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5461 possibility that it cannot handle reentrancy. This fix repairs a couple
5463 issues seen in the field, especially on machines with many cores:
5465 1) Delete method children only upon the exit of the last thread,
5466 so as to not delete objects out from under other running threads
5467 (and possibly causing a fault.)
5468 2) Set the "serialized" bit for the method only upon the exit of the
5469 Last thread, so as to not cause deadlock when running threads
5471 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5472 so that there is no longer any confusion between the two.
5474 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5476 Debugger: Now lock the namespace for duration of a namespace dump.
5478 issues if the namespace is changing dynamically underneath the debugger.
5479 Especially affects temporary namespace nodes, since the debugger displays
5482 Updated the ordering of include files. The ACPICA headers should appear
5483 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5485 any necessary compiler-specific defines, etc. Affects the ACPI-related
5489 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5491 to all module headers and signons, including the Linux header. This
5493 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5496 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5497 project files for VC++ 6.0 are now obsolete. New project files can be
5499 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5502 Example Code and Data Size: These are the sizes for the OS-independent
5503 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5504 debug version of the code includes the debug output trace mechanism and
5506 much larger code and data size.
5508 Previous Release (VC 6.0):
5509 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5510 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5511 Current Release (VC 9.0):
5512 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5513 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5515 2) iASL Compiler/Disassembler and Tools:
5517 iASL: Added generic data types to the Data Table compiler. Add "generic"
5519 types such as UINT32, String, Unicode, etc., to simplify the generation
5521 platform-defined tables such as UEFI. Lin Ming.
5523 iASL: Added listing support for the Data Table Compiler. Adds listing
5525 (-l) to display actual binary output for each line of input code.
5527 ----------------------------------------
5528 09 December 2010. Summary of changes for version 20101209:
5530 1) ACPI CA Core Subsystem:
5532 Completed the major overhaul of the GPE support code that was begun in
5534 2010. Major features include: removal of _PRW execution in ACPICA (host
5535 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5536 changes to existing interfaces, simplification of GPE handler operation,
5538 a handful of new interfaces:
5544 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5546 See the ACPICA Programmer Reference for full details and programming
5547 information. See the new section 4.4 "General Purpose Event (GPE)
5549 for a full overview, and section 8.7 "ACPI General Purpose Event
5551 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5553 Bob Moore, Rafael Wysocki.
5555 Implemented a new GPE feature for Windows compatibility, the "Implicit
5557 GPE Notify". This feature will automatically issue a Notify(2) on a
5559 when a Wake GPE is received if there is no corresponding GPE method or
5560 handler. ACPICA BZ 870.
5562 Fixed a problem with the Scope() operator during table parse and load
5564 During load phase (table load or method execution), the scope operator
5566 not enter the target into the namespace. Instead, it should open a new
5568 at the target location. Linux BZ 19462, ACPICA BZ 882.
5570 Example Code and Data Size: These are the sizes for the OS-independent
5571 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5572 debug version of the code includes the debug output trace mechanism and
5574 much larger code and data size.
5577 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5578 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5580 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5581 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5583 2) iASL Compiler/Disassembler and Tools:
5585 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5587 "bus-specific" per the ACPI specification, and therefore any characters
5589 acceptable. The only checks that can be performed are for a null string
5591 perhaps for a leading asterisk. ACPICA BZ 886.
5593 iASL: Fixed a problem where a syntax error that caused a premature EOF
5594 condition on the source file emitted a very confusing error message. The
5595 premature EOF is now detected correctly. ACPICA BZ 891.
5597 Disassembler: Decode the AccessSize within a Generic Address Structure
5599 access, word access, etc.) Note, this field does not allow arbitrary bit
5600 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5602 New: AcpiNames utility - Example namespace dump utility. Shows an example
5604 ACPICA configuration for a minimal namespace dump utility. Uses table and
5605 namespace managers, but no AML interpreter. Does not add any
5607 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
5608 partition and configure ACPICA. ACPICA BZ 883.
5610 AML Debugger: Increased the debugger buffer size for method return
5612 Was 4K, increased to 16K. Also enhanced error messages for debugger
5614 execution, including the buffer overflow case.
5616 ----------------------------------------
5617 13 October 2010. Summary of changes for version 20101013:
5619 1) ACPI CA Core Subsystem:
5621 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
5623 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
5624 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
5626 Changed the type of the predefined namespace object _TZ from ThermalZone
5628 Device. This was found to be confusing to the host software that
5630 the various thermal zones, since _TZ is not really a ThermalZone.
5633 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
5636 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
5637 string is "Windows 2006 SP2".
5639 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
5641 code automatically repairs _HID-related strings, this type of code is no
5642 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
5645 Example Code and Data Size: These are the sizes for the OS-independent
5646 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5647 debug version of the code includes the debug output trace mechanism and
5649 much larger code and data size.
5652 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5653 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5655 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5656 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5658 2) iASL Compiler/Disassembler and Tools:
5660 iASL: Implemented additional compile-time validation for _HID strings.
5662 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
5665 the string must be exactly seven or eight characters. For both _HID and
5667 strings, all characters must be alphanumeric. ACPICA BZ 874.
5669 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
5670 descriptors that are mostly or all zeros, with the expectation that they
5672 be filled in at runtime. iASL now allows this as long as there is a
5674 tag" (name) associated with the descriptor, which gives the ASL a handle
5675 needed to modify the descriptor. ACPICA BZ 873.
5677 Added single-thread support to the generic Unix application OSL.
5679 for iASL support, this change removes the use of semaphores in the
5681 threaded ACPICA tools/applications - increasing performance. The
5682 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
5683 option. ACPICA BZ 879.
5685 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
5687 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
5689 iASL: Moved all compiler messages to a new file, aslmessages.h.
5691 ----------------------------------------
5692 15 September 2010. Summary of changes for version 20100915:
5694 1) ACPI CA Core Subsystem:
5696 Removed the AcpiOsDerivePciId OSL interface. The various host
5698 of this function were not OS-dependent and are now obsolete and can be
5699 removed from all host OSLs. This function has been replaced by
5700 AcpiHwDerivePciId, which is now part of the ACPICA core code.
5701 AcpiHwDerivePciId has been implemented without recursion. Adds one new
5702 module, hwpci.c. ACPICA BZ 857.
5704 Implemented a dynamic repair for _HID and _CID strings. The following
5705 problems are now repaired at runtime: 1) Remove a leading asterisk in the
5706 string, and 2) the entire string is uppercased. Both repairs are in
5707 accordance with the ACPI specification and will simplify host driver
5711 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5712 always UINT64. This simplifies the ACPICA code, especially any printf
5714 UINT64 is the only common data type for all thread_id types across all
5715 operating systems. It is now up to the host OSL to cast the native
5717 type to UINT64 before returning the value to ACPICA (via
5719 Lin Ming, Bob Moore.
5721 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5723 keyword is not standard across compilers, and this type allows inline to
5725 configured on a per-compiler basis. Lin Ming.
5727 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5729 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5731 during suspend/restore operations. ACPICA BZ 869.
5733 All code that implements error/warning messages with the "ACPI:" prefix
5735 been moved to a new module, utxferror.c.
5737 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5739 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5741 Example Code and Data Size: These are the sizes for the OS-independent
5742 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5743 debug version of the code includes the debug output trace mechanism and
5745 much larger code and data size.
5748 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5749 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5751 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5752 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5754 2) iASL Compiler/Disassembler and Tools:
5756 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5758 This keeps the output files free of random error messages that may
5760 from within the namespace/interpreter code. Used this opportunity to
5762 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5763 866. Lin Ming, Bob Moore.
5765 Tools: update some printfs for ansi warnings on size_t. Handle width
5767 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5769 ----------------------------------------
5770 06 August 2010. Summary of changes for version 20100806:
5772 1) ACPI CA Core Subsystem:
5774 Designed and implemented a new host interface to the _OSI support code.
5776 will allow the host to dynamically add or remove multiple _OSI strings,
5778 well as install an optional handler that is called for each _OSI
5780 Also added a new AML debugger command, 'osi' to display and modify the
5782 _OSI string table, and test support in the AcpiExec utility. See the
5784 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5786 AcpiInstallInterface - Add an _OSI string.
5787 AcpiRemoveInterface - Delete an _OSI string.
5788 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5790 AcpiOsValidateInterface - no longer used.
5792 source/components/utilities/utosi.c
5794 Re-introduced the support to enable multi-byte transfers for Embedded
5795 Controller (EC) operation regions. A reported problem was found to be a
5797 in the host OS, not in the multi-byte support. Previously, the maximum
5799 size passed to the EC operation region handler was a single byte. There
5801 often EC Fields larger than one byte that need to be transferred, and it
5803 useful for the EC driver to lock these as a single transaction. This
5805 enables single transfers larger than 8 bits. This effectively changes the
5806 access to the EC space from ByteAcc to AnyAcc, and will probably require
5807 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5809 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5811 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5812 prototype in acpiosxf.h had the output value pointer as a (void *).
5813 It should be a (UINT64 *). This may affect some host OSL code.
5815 Fixed a couple problems with the recently modified Linux makefiles for
5817 and AcpiExec. These new makefiles place the generated object files in the
5818 local directory so that there can be no collisions between the files that
5820 shared between them that are compiled with different options.
5822 Example Code and Data Size: These are the sizes for the OS-independent
5823 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5824 debug version of the code includes the debug output trace mechanism and
5826 much larger code and data size.
5829 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5830 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5832 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5833 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5835 2) iASL Compiler/Disassembler and Tools:
5837 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5839 namespace from and disassemble an entire group of AML files. Useful for
5840 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5842 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5844 iASL: Allow multiple invocations of -e option. This change allows
5846 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
5850 ----------------------------------------
5851 02 July 2010. Summary of changes for version 20100702:
5853 1) ACPI CA Core Subsystem:
5855 Implemented several updates to the recently added GPE reference count
5856 support. The model for "wake" GPEs is changing to give the host OS
5858 control of these GPEs. Eventually, the ACPICA core will not execute any
5860 methods, since the host already must execute them. Also, additional
5862 were made to help ensure that the reference counts are kept in proper
5863 synchronization with reality. Rafael J. Wysocki.
5865 1) Ensure that GPEs are not enabled twice during initialization.
5866 2) Ensure that GPE enable masks stay in sync with the reference count.
5867 3) Do not inadvertently enable GPEs when writing GPE registers.
5868 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
5869 interface. This interface will set or clear individual GPEs for wakeup.
5870 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
5872 are now used for "runtime" GPEs only.
5874 Changed the behavior of the GPE install/remove handler interfaces. The
5877 no longer disabled during this process, as it was found to cause problems
5879 some machines. Rafael J. Wysocki.
5881 Reverted a change introduced in version 20100528 to enable Embedded
5882 Controller multi-byte transfers. This change was found to cause problems
5884 Index Fields and possibly Bank Fields. It will be reintroduced when these
5885 problems have been resolved.
5887 Fixed a problem with references to Alias objects within Package Objects.
5889 reference to an Alias within the definition of a Package was not always
5890 resolved properly. Aliases to objects like Processors, Thermal zones,
5892 were resolved to the actual object instead of a reference to the object
5895 should be. Package objects are only allowed to contain integer, string,
5896 buffer, package, and reference objects. Redhat bugzilla 608648.
5898 Example Code and Data Size: These are the sizes for the OS-independent
5899 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5900 debug version of the code includes the debug output trace mechanism and
5902 much larger code and data size.
5905 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5906 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5908 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5909 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5911 2) iASL Compiler/Disassembler and Tools:
5913 iASL: Implemented a new compiler subsystem to allow definition and
5914 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5916 are called "ACPI Data Tables", and the new compiler is the "Data Table
5917 Compiler". This compiler is intended to simplify the existing error-prone
5918 process of creating these tables for the BIOS, as well as allowing the
5919 disassembly, modification, recompilation, and override of existing ACPI
5921 tables. See the iASL User Guide for detailed information.
5923 iASL: Implemented a new Template Generator option in support of the new
5925 Table Compiler. This option will create examples of all known ACPI tables
5926 that can be used as the basis for table development. See the iASL
5927 documentation and the -T option.
5929 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5932 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5933 object files in the local directory so that there can be no collisions
5934 between the shared files between them that are generated with different
5937 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5939 the #define __APPLE__ to enable this support.
5941 ----------------------------------------
5942 28 May 2010. Summary of changes for version 20100528:
5944 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5945 available at www.acpi.info. This is primarily an errata release.
5947 1) ACPI CA Core Subsystem:
5949 Undefined ACPI tables: We are looking for the definitions for the
5951 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5953 Implemented support to enable multi-byte transfers for Embedded
5955 (EC) operation regions. Previously, the maximum data size passed to the
5957 operation region handler was a single byte. There are often EC Fields
5959 than one byte that need to be transferred, and it is useful for the EC
5961 to lock these as a single transaction. This change enables single
5963 larger than 8 bits. This effectively changes the access to the EC space
5965 ByteAcc to AnyAcc, and will probably require changes to the host OS
5967 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5969 transfers. Alexey Starikovskiy, Lin Ming
5971 Implemented a performance enhancement for namespace search and access.
5973 change enhances the performance of namespace searches and walks by adding
5975 backpointer to the parent in each namespace node. On large namespaces,
5977 change can improve overall ACPI performance by up to 9X. Adding a pointer
5979 each namespace node increases the overall size of the internal namespace
5981 about 5%, since each namespace entry usually consists of both a namespace
5982 node and an ACPI operand object. However, this is the first growth of the
5983 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5985 Implemented a performance optimization that reduces the number of
5987 walks. On control method exit, only walk the namespace if the method is
5989 to have created namespace objects outside of its local scope. Previously,
5991 entire namespace was traversed on each control method exit. This change
5993 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5996 Added support to truncate I/O addresses to 16 bits for Windows
5998 Some ASL code has been seen in the field that inadvertently has bits set
5999 above bit 15. This feature is optional and is enabled if the BIOS
6001 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6004 Added support to limit the maximum time for the ASL Sleep() operator. To
6005 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6006 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6009 Added run-time validation support for the _WDG and_WED Microsoft
6011 methods. These objects are defined by "Windows Instrumentation", and are
6013 part of the ACPI spec. ACPICA BZ 860.
6015 Expanded all statistic counters used during namespace and device
6016 initialization from 16 to 32 bits in order to support very large
6019 Replaced all instances of %d in printf format specifiers with %u since
6021 all integers in ACPICA are unsigned.
6023 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6027 Example Code and Data Size: These are the sizes for the OS-independent
6028 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6029 debug version of the code includes the debug output trace mechanism and
6031 much larger code and data size.
6034 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6035 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6037 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6038 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6040 2) iASL Compiler/Disassembler and Tools:
6042 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6043 methods. These objects are defined by "Windows Instrumentation", and are
6045 part of the ACPI spec. ACPICA BZ 860.
6047 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6048 option will disable the tracking mechanism, which improves performance
6051 AcpiExec: Restructured the command line options into -d (disable) and -e
6054 ----------------------------------------
6055 28 April 2010. Summary of changes for version 20100428:
6057 1) ACPI CA Core Subsystem:
6059 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6060 including FADT-based and GPE Block Devices, execute any _PRW methods in
6062 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6063 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6064 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6065 Devices. Provides compatibility with other ACPI implementations. Two new
6066 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6069 Fixed a regression introduced in version 20100331 within the table
6071 where initial table loading could fail. This was introduced in the fix
6073 AcpiReallocateRootTable. Also, renamed some of fields in the table
6075 data structures to clarify their meaning and use.
6077 Fixed a possible allocation overrun during internal object copy in
6078 AcpiUtCopySimpleObject. The original code did not correctly handle the
6080 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6083 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6084 possible access beyond end-of-allocation. Also, now fully validate
6086 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6088 Example Code and Data Size: These are the sizes for the OS-independent
6089 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6090 debug version of the code includes the debug output trace mechanism and
6092 much larger code and data size.
6095 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6096 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6098 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6099 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6101 2) iASL Compiler/Disassembler and Tools:
6103 iASL: Implemented Min/Max/Len/Gran validation for address resource
6104 descriptors. This change implements validation for the address fields
6106 are common to all address-type resource descriptors. These checks are
6107 implemented: Checks for valid Min/Max, length within the Min/Max window,
6108 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6110 table 6-40 in the ACPI 4.0a specification. Also split the large
6112 and aslrestype2.c files into five new files. ACPICA BZ 840.
6114 iASL: Added support for the _Wxx predefined names. This support was
6116 and these names were not recognized by the compiler as valid predefined
6117 names. ACPICA BZ 851.
6119 iASL: Added an error for all predefined names that are defined to return
6121 value and thus must be implemented as Control Methods. These include all
6123 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6124 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6126 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6128 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6130 dynamically loaded via the Load() operator. Also cleaned up output for
6133 ta and -tc options. ACPICA BZ 853.
6135 Tests: Added a new file with examples of extended iASL error checking.
6136 Demonstrates the advanced error checking ability of the iASL compiler.
6137 Available at tests/misc/badcode.asl.
6139 ----------------------------------------
6140 31 March 2010. Summary of changes for version 20100331:
6142 1) ACPI CA Core Subsystem:
6144 Completed a major update for the GPE support in order to improve support
6146 shared GPEs and to simplify both host OS and ACPICA code. Added a
6148 count mechanism to support shared GPEs that require multiple device
6150 Several external interfaces have changed. One external interface has been
6151 removed. One new external interface was added. Most of the GPE external
6152 interfaces now use the GPE spinlock instead of the events mutex (and the
6153 Flags parameter for many GPE interfaces has been removed.) See the
6155 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6157 Wysocki. ACPICA BZ 831.
6160 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6166 Implemented write support for DataTable operation regions. These regions
6168 defined via the DataTableRegion() operator. Previously, only read support
6170 implemented. The ACPI specification allows DataTableRegions to be
6174 Implemented a new subsystem option to force a copy of the DSDT to local
6175 memory. Optionally copy the entire DSDT to local memory (instead of
6177 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6179 the original DSDT, creating the need for this option. Default is FALSE,
6183 Implemented detection of a corrupted or replaced DSDT. This change adds
6184 support to detect a DSDT that has been corrupted and/or replaced from
6186 the OS (by firmware). This is typically catastrophic for the system, but
6188 been seen on some machines. Once this problem has been detected, the DSDT
6189 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6191 Fixed two problems with AcpiReallocateRootTable during the root table
6193 When copying the root table to the new allocation, the length used was
6194 incorrect. The new size was used instead of the current table size,
6196 too much data was copied. Also, the count of available slots for ACPI
6198 was not set correctly. Alexey Starikovskiy, Bob Moore.
6200 Example Code and Data Size: These are the sizes for the OS-independent
6201 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6202 debug version of the code includes the debug output trace mechanism and
6204 much larger code and data size.
6207 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6208 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6210 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6211 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6213 2) iASL Compiler/Disassembler and Tools:
6215 iASL: Implement limited typechecking for values returned from predefined
6216 control methods. The type of any returned static (unnamed) object is now
6217 validated. For example, Return(1). ACPICA BZ 786.
6219 iASL: Fixed a predefined name object verification regression. Fixes a
6221 introduced in version 20100304. An error is incorrectly generated if a
6222 predefined name is declared as a static named object with a value defined
6223 using the keywords "Zero", "One", or "Ones". Lin Ming.
6225 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6227 reducing the requested registry access rights. ACPICA BZ 842.
6229 Disassembler: fixed a possible fault when generating External()
6231 Introduced in commit ae7d6fd: Properly handle externals with parent-
6233 (carat). Fixes a string length allocation calculation. Lin Ming.
6235 ----------------------------------------
6236 04 March 2010. Summary of changes for version 20100304:
6238 1) ACPI CA Core Subsystem:
6240 Fixed a possible problem with the AML Mutex handling function
6241 AcpiExReleaseMutex where the function could fault under the very rare
6242 condition when the interpreter has blocked, the interpreter lock is
6244 the interpreter is then reentered via the same thread, and attempts to
6245 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6249 Implemented additional configuration support for the AML "Debug Object".
6250 Output from the debug object can now be enabled via a global variable,
6251 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6253 This debug output is now available in the release version of ACPICA
6255 of just the debug version. Also, the entire debug output module can now
6257 configured out of the ACPICA build if desired. One new file added,
6258 executer/exdebug.c. Lin Ming, Bob Moore.
6260 Added header support for the ACPI MCHI table (Management Controller Host
6261 Interface Table). This table was added in ACPI 4.0, but the defining
6263 has only recently become available.
6265 Standardized output of integer values for ACPICA warnings/errors. Always
6267 0x prefix for hex output, always use %u for unsigned integer decimal
6269 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6271 invocations.) These invocations were converted from the original
6272 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6274 Example Code and Data Size: These are the sizes for the OS-independent
6275 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6276 debug version of the code includes the debug output trace mechanism and
6278 much larger code and data size.
6281 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6282 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6284 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6285 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6287 2) iASL Compiler/Disassembler and Tools:
6289 iASL: Implemented typechecking support for static (non-control method)
6290 predefined named objects that are declared with the Name() operator. For
6291 example, the type of this object is now validated to be of type Integer:
6292 Name(_BBN, 1). This change migrates the compiler to using the core
6294 name table instead of maintaining a local version. Added a new file,
6295 aslpredef.c. ACPICA BZ 832.
6297 Disassembler: Added support for the ACPI 4.0 MCHI table.
6299 ----------------------------------------
6300 21 January 2010. Summary of changes for version 20100121:
6302 1) ACPI CA Core Subsystem:
6304 Added the 2010 copyright to all module headers and signons. This affects
6305 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6306 tools/utilities, and the test suites.
6308 Implemented a change to the AcpiGetDevices interface to eliminate
6310 invocations of the _STA method. In the case where a specific _HID is
6311 requested, do not run _STA until a _HID match is found. This eliminates
6312 potentially dozens of _STA calls during a search for a particular
6314 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6316 Implemented an additional repair for predefined method return values.
6318 to repair unexpected NULL elements within returned Package objects.
6321 Integer of value zero, a NULL String, or a zero-length Buffer as
6323 ACPICA BZ 818. Lin Ming, Bob Moore.
6325 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6327 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6329 64-bit AML integers). It is now obsolete and this change removes it from
6331 ACPICA code base, replaced by UINT64. The original typedef has been
6333 for now for compatibility with existing device driver code. ACPICA BZ
6336 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6338 the parse tree object.
6340 Added additional warning options for the gcc-4 generation. Updated the
6342 accordingly. This includes some code restructuring to eliminate
6344 code, elimination of some gotos, elimination of unused return values,
6346 additional casting, and removal of redundant declarations.
6348 Example Code and Data Size: These are the sizes for the OS-independent
6349 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6350 debug version of the code includes the debug output trace mechanism and
6352 much larger code and data size.
6355 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6356 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6358 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6359 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6361 2) iASL Compiler/Disassembler and Tools:
6363 No functional changes for this release.
6365 ----------------------------------------
6366 14 December 2009. Summary of changes for version 20091214:
6368 1) ACPI CA Core Subsystem:
6370 Enhanced automatic data type conversions for predefined name repairs.
6372 change expands the automatic repairs/conversions for predefined name
6374 values to make Integers, Strings, and Buffers fully interchangeable.
6377 Buffer can be converted to a Package of Integers if necessary. The
6379 module was completely restructured. Lin Ming, Bob Moore.
6381 Implemented automatic removal of null package elements during predefined
6383 repairs. This change will automatically remove embedded and trailing NULL
6384 package elements from returned package objects that are defined to
6387 variable number of sub-packages. The driver is then presented with a
6389 with no null elements to deal with. ACPICA BZ 819.
6391 Implemented a repair for the predefined _FDE and _GTM names. The expected
6392 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6394 possible problems (both seen in the field), where a package of integers
6396 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6399 Implemented additional module-level code support. This change will
6401 execute module-level code that is not at the root of the namespace (under
6403 Device object, etc.). Now executes the code within the current scope
6405 of the root. ACPICA BZ 762. Lin Ming.
6407 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6409 problem where mutex errors can occur when running a _REG method that is
6411 the same scope as a method-defined operation region or an operation
6413 under a module-level IF block. This type of code is rare, so the problem
6415 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6417 Fixed a possible memory leak during module-level code execution. An
6419 could be leaked for each block of executed module-level code if the
6420 interpreter slack mode is enabled This change deletes any implicitly
6422 object from the module-level code block. Lin Ming.
6424 Removed messages for successful predefined repair(s). The repair
6426 was considered too wordy. Now, messages are only unconditionally emitted
6428 the return object cannot be repaired. Existing messages for successful
6429 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6432 Example Code and Data Size: These are the sizes for the OS-independent
6433 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6434 debug version of the code includes the debug output trace mechanism and
6436 much larger code and data size.
6439 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6440 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6442 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6443 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6445 2) iASL Compiler/Disassembler and Tools:
6447 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6449 were no longer automatically removed at the termination of the compile.
6451 acpiexec: Implemented the -f option to specify default region fill value.
6452 This option specifies the value used to initialize buffers that simulate
6453 operation regions. Default value is zero. Useful for debugging problems
6455 depend on a specific initial value for a region or field.
6457 ----------------------------------------
6458 12 November 2009. Summary of changes for version 20091112:
6460 1) ACPI CA Core Subsystem:
6462 Implemented a post-order callback to AcpiWalkNamespace. The existing
6463 interface only has a pre-order callback. This change adds an additional
6464 parameter for a post-order callback which will be more useful for bus
6466 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6468 Modified the behavior of the operation region memory mapping cache for
6469 SystemMemory. Ensure that the memory mappings created for operation
6471 do not cross 4K page boundaries. Crossing a page boundary while mapping
6472 regions can cause kernel warnings on some hosts if the pages have
6474 attributes. Such regions are probably BIOS bugs, and this is the
6476 Linux BZ 14445. Lin Ming.
6478 Implemented an automatic repair for predefined methods that must return
6479 sorted lists. This change will repair (by sorting) packages returned by
6481 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6483 and do not contain NULL package elements. Adds one new file,
6484 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6486 Fixed a possible fault during predefined name validation if a return
6488 object contains NULL elements. Also adds a warning if a NULL element is
6489 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6491 include repair or removal of all such NULL elements where possible.
6493 Implemented additional module-level executable AML code support. This
6495 will execute module-level code that is not at the root of the namespace
6496 (under a Device object, etc.) at table load time. Module-level executable
6498 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6500 Implemented a new internal function to create Integer objects. This
6502 simplifies miscellaneous object creation code. ACPICA BZ 823.
6504 Reduced the severity of predefined repair messages, Warning to Info.
6506 the object was successfully repaired, a warning is too severe. Reduced to
6508 info message for now. These messages may eventually be changed to debug-
6512 Example Code and Data Size: These are the sizes for the OS-independent
6513 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6514 debug version of the code includes the debug output trace mechanism and
6516 much larger code and data size.
6519 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6520 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6522 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6523 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6525 2) iASL Compiler/Disassembler and Tools:
6527 iASL: Implemented Switch() with While(1) so that Break works correctly.
6529 change correctly implements the Switch operator with a surrounding
6531 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6533 iASL: Added a message if a package initializer list is shorter than
6535 length. Adds a new remark for a Package() declaration if an initializer
6537 exists, but is shorter than the declared length of the package. Although
6538 technically legal, this is probably a coding error and it is seen in the
6539 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6541 iASL: Fixed a problem where the compiler could fault after the maximum
6543 of errors was reached (200).
6545 acpixtract: Fixed a possible warning for pointer cast if the compiler
6547 level set very high.
6549 ----------------------------------------
6550 13 October 2009. Summary of changes for version 20091013:
6552 1) ACPI CA Core Subsystem:
6554 Fixed a problem where an Operation Region _REG method could be executed
6556 than once. If a custom address space handler is installed by the host
6558 the "initialize operation regions" phase of the ACPICA initialization,
6560 _REG methods for that address space could be executed twice. This change
6561 fixes the problem. ACPICA BZ 427. Lin Ming.
6563 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6564 invocation of "Scope(\)" is executed (change scope to root), one internal
6565 operand object was leaked. Lin Ming.
6567 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6568 return value is defined as a Field object in the AML, and the field
6569 size is less than or equal to the default width of an integer (32 or
6571 can incorrectly return an Integer instead of a Buffer. ACPICA now
6572 automatically repairs this problem. ACPICA BZ 810.
6574 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6576 "OEM Information" field is often incorrectly returned as an Integer with
6577 value zero if the field is not supported by the platform. This is due to
6579 ambiguity in the ACPI specification. The field should always be a string.
6580 ACPICA now automatically repairs this problem by returning a NULL string
6581 within the returned Package. ACPICA BZ 807.
6583 Example Code and Data Size: These are the sizes for the OS-independent
6584 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6585 debug version of the code includes the debug output trace mechanism and
6587 much larger code and data size.
6590 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6591 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6593 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6594 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6596 2) iASL Compiler/Disassembler and Tools:
6598 Disassembler: Fixed a problem where references to external symbols that
6599 contained one or more parent-prefixes (carats) were not handled
6601 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6603 Disassembler: Restructured the code so that all functions that handle
6604 external symbols are in a single module. One new file is added,
6607 AML Debugger: Added a max count argument for the Batch command (which
6608 executes multiple predefined methods within the namespace.)
6610 iASL: Updated the compiler documentation (User Reference.) Available at
6611 http://www.acpica.org/documentation/. ACPICA BZ 750.
6613 AcpiXtract: Updated for Lint and other formatting changes. Close all open
6616 ----------------------------------------
6617 03 September 2009. Summary of changes for version 20090903:
6619 1) ACPI CA Core Subsystem:
6621 For Windows Vista compatibility, added the automatic execution of an _INI
6622 method located at the namespace root (\_INI). This method is executed at
6623 table load time. This support is in addition to the automatic execution
6625 \_SB._INI. Lin Ming.
6627 Fixed a possible memory leak in the interpreter for AML package objects
6629 the package initializer list is longer than the defined size of the
6631 This apparently can only happen if the BIOS changes the package size on
6633 fly (seen in a _PSS object), as ASL compilers do not allow this. The
6634 interpreter will truncate the package to the defined size (and issue an
6636 message), but previously could leave the extra objects undeleted if they
6638 pre-created during the argument processing (such is the case if the
6640 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
6642 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
6643 This has been reported in the field. Previously, ACPICA would zero out
6645 buffer/string. Now, the operation is treated as a noop. Provides Windows
6646 compatibility. ACPICA BZ 803. Lin Ming.
6648 Removed an extraneous error message for ASL constructs of the form
6649 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
6651 are seen in many BIOSs and are once again treated as NOOPs and no error
6653 emitted when they are encountered. ACPICA BZ 785.
6655 Fixed an extraneous warning message if a _DSM reserved method returns a
6656 Package object. _DSM can return any type of object, so validation on the
6657 return type cannot be performed. ACPICA BZ 802.
6659 Example Code and Data Size: These are the sizes for the OS-independent
6660 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6661 debug version of the code includes the debug output trace mechanism and
6663 much larger code and data size.
6666 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6667 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6669 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6670 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6672 2) iASL Compiler/Disassembler and Tools:
6674 iASL: Fixed a problem with the use of the Alias operator and Resource
6675 Templates. The correct alias is now constructed and no error is emitted.
6678 iASL: Implemented the -I option to specify additional search directories
6680 include files. Allows multiple additional search paths for include files.
6681 Directories are searched in the order specified on the command line
6683 the local directory is searched.) ACPICA BZ 800.
6685 iASL: Fixed a problem where the full pathname for include files was not
6686 emitted for warnings/errors. This caused the IDE support to not work
6687 properly. ACPICA BZ 765.
6689 iASL: Implemented the -@ option to specify a Windows-style response file
6690 containing additional command line options. ACPICA BZ 801.
6692 AcpiExec: Added support to load multiple AML files simultaneously (such
6695 DSDT and multiple SSDTs). Also added support for wildcards within the AML
6696 pathname. These features allow all machine tables to be easily loaded and
6697 debugged together. ACPICA BZ 804.
6699 Disassembler: Added missing support for disassembly of HEST table Error
6703 ----------------------------------------
6704 30 July 2009. Summary of changes for version 20090730:
6706 The ACPI 4.0 implementation for ACPICA is complete with this release.
6708 1) ACPI CA Core Subsystem:
6710 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6711 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6713 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6715 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6717 have been some ACPI 4.0 changes to other existing tables. Split the large
6718 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6720 ACPI 4.0: Implemented predefined name validation for all new names. There
6722 31 new names in ACPI 4.0. The predefined validation module was split into
6724 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6726 Implemented support for so-called "module-level executable code". This is
6727 executable AML code that exists outside of any control method and is
6729 to be executed at table load time. Although illegal since ACPI 2.0, this
6731 of code still exists and is apparently still being created. Blocks of
6733 code are now detected and executed as intended. Currently, the code
6735 must exist under either an If, Else, or While construct; these are the
6736 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6738 Implemented an automatic dynamic repair for predefined names that return
6739 nested Package objects. This applies to predefined names that are defined
6741 return a variable-length Package of sub-packages. If the number of sub-
6742 packages is one, BIOS code is occasionally seen that creates a simple
6744 package with no sub-packages. This code attempts to fix the problem by
6745 wrapping a new package object around the existing package. These methods
6747 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6751 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6753 The _HID/_CID matching was broken and no longer matched IDs correctly.
6757 Fixed a problem with AcpiReset where the reset would silently fail if the
6758 register was one of the protected I/O ports. AcpiReset now bypasses the
6760 validation mechanism. This may eventually be driven into the
6764 Fixed a regression related to the recent update of the AcpiRead/Write
6765 interfaces. A sleep/suspend could fail if the optional PM2 Control
6767 does not exist during an attempt to write the Bus Master Arbitration bit.
6768 (However, some hosts already delete the code that writes this bit, and
6770 code may in fact be obsolete at this date.) ACPICA BZ 799.
6772 Fixed a problem where AcpiTerminate could fault if inadvertently called
6774 in succession. ACPICA BZ 795.
6776 Example Code and Data Size: These are the sizes for the OS-independent
6777 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6778 debug version of the code includes the debug output trace mechanism and
6780 much larger code and data size.
6783 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6784 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6786 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6787 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6789 2) iASL Compiler/Disassembler and Tools:
6791 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6792 changes to existing tables. ACPICA BZ 775.
6794 ----------------------------------------
6795 25 June 2009. Summary of changes for version 20090625:
6797 The ACPI 4.0 Specification was released on June 16 and is available at
6798 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6799 continue for the next few releases.
6801 1) ACPI CA Core Subsystem:
6803 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6804 address space. Includes support for bi-directional data buffers and an
6806 address space handler (to be installed by an IPMI device driver.) ACPICA
6810 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6812 support in both the header files and the disassembler.
6814 Completed a major update for the AcpiGetObjectInfo external interface.
6816 - Support for variable, unlimited length HID, UID, and CID strings.
6817 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6819 - Call the _SxW power methods on behalf of a device object.
6820 - Determine if a device is a PCI root bridge.
6821 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6822 These changes will require an update to all callers of this interface.
6824 the updated ACPICA Programmer Reference for details. One new source file
6826 been added - utilities/utids.c. ACPICA BZ 368, 780.
6828 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6829 transfers. The Value parameter has been extended from 32 bits to 64 bits
6831 order to support new ACPI 4.0 tables. These changes will require an
6834 all callers of these interfaces. See the ACPICA Programmer Reference for
6835 details. ACPICA BZ 768.
6837 Fixed several problems with AcpiAttachData. The handler was not invoked
6839 the host node was deleted. The data sub-object was not automatically
6841 when the host node was deleted. The interface to the handler had an
6843 parameter, this was removed. ACPICA BZ 778.
6845 Enhanced the function that dumps ACPI table headers. All non-printable
6846 characters in the string fields are now replaced with '?' (Signature,
6848 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
6849 these fields are occasionally seen in the field. ACPICA BZ 788.
6851 Fixed a problem with predefined method repair code where the code that
6852 attempts to repair/convert an object of incorrect type is only executed
6854 the first time the predefined method is called. The mechanism that
6856 warnings on subsequent calls was interfering with the repair mechanism.
6859 Fixed a possible memory leak in the predefined validation/repair code
6862 buffer is automatically converted to an expected string object.
6864 Removed obsolete 16-bit files from the distribution and from the current
6866 tree head. ACPICA BZ 776.
6868 Example Code and Data Size: These are the sizes for the OS-independent
6869 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6870 debug version of the code includes the debug output trace mechanism and
6872 much larger code and data size.
6875 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6876 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6878 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6879 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6881 2) iASL Compiler/Disassembler and Tools:
6883 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6884 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6886 ACPI 4.0: iASL - implemented compile-time validation support for all new
6887 predefined names and control methods (31 total). ACPICA BZ 769.
6889 ----------------------------------------
6890 21 May 2009. Summary of changes for version 20090521:
6892 1) ACPI CA Core Subsystem:
6894 Disabled the preservation of the SCI enable bit in the PM1 control
6896 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6899 a "preserved" bit - "OSPM always preserves this bit position", section
6900 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6901 because the bit needs to be explicitly set by the OS as a workaround. No
6902 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6903 attempts to preserve this bit.
6905 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6906 incorrectly formed _PRT package could cause a fault. Added validation to
6907 ensure that each package element is actually a sub-package.
6909 Implemented a new interface to install or override a single control
6911 AcpiInstallMethod. This interface is useful when debugging in order to
6913 an existing method or to install a missing method without having to
6915 the entire ACPI table. See the ACPICA Programmer Reference for use and
6916 examples. Lin Ming, Bob Moore.
6918 Fixed several reference count issues with the DdbHandle object that is
6919 created from a Load or LoadTable operator. Prevent premature deletion of
6921 object. Also, mark the object as invalid once the table has been
6923 This is needed because the handle itself may not be deleted after the
6925 unload, depending on whether it has been stored in a named object by the
6928 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6929 mutexes of the same sync level are acquired but then not released in
6931 opposite order, the internally maintained Current Sync Level becomes
6933 and can cause subsequent execution errors. ACPICA BZ 471.
6935 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6936 specification has been changed to make the SyncLevel for mutex objects
6938 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6940 same as the current sync level. This makes more sense than the previous
6942 (SyncLevel less than or equal). This change updates the code to match the
6945 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6947 (local) cache must be locked during all cache object deletions. Andrew
6950 Updated the Load operator to use operation region interfaces. This
6952 direct memory mapping with region access calls. Now, all region accesses
6954 through the installed region handler as they should.
6956 Simplified and optimized the NsGetNextNode function. Reduced parameter
6958 and reduced code for this frequently used function.
6960 Example Code and Data Size: These are the sizes for the OS-independent
6961 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6962 debug version of the code includes the debug output trace mechanism and
6964 much larger code and data size.
6967 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6968 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6970 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6971 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6973 2) iASL Compiler/Disassembler and Tools:
6975 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6977 with sub-table disassembly and handling invalid sub-tables. Attempt
6979 after an invalid sub-table ID.
6981 ----------------------------------------
6982 22 April 2009. Summary of changes for version 20090422:
6984 1) ACPI CA Core Subsystem:
6986 Fixed a compatibility issue with the recently released I/O port
6988 mechanism. For windows compatibility, 1) On a port protection violation,
6989 simply ignore the request and do not return an exception (allow the
6991 method to continue execution.) 2) If only part of the request overlaps a
6992 protected port, read/write the individual ports that are not protected.
6996 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6998 breaks into the AML debugger if the debugger is present. This matches the
6999 ACPI-defined behavior.
7001 Fixed several possible warnings related to the use of the configurable
7002 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7003 pointer with no warnings. Also fixes several warnings in printf-like
7004 statements for the 64-bit build when the type is configured as a pointer.
7007 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7009 warning options.) Examples include printf formats, aliasing, unused
7011 missing prototypes, missing switch default statements, use of non-ANSI
7012 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7014 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7016 Example Code and Data Size: These are the sizes for the OS-independent
7017 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7018 debug version of the code includes the debug output trace mechanism and
7020 much larger code and data size.
7023 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7024 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7026 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7027 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7029 2) iASL Compiler/Disassembler and Tools:
7031 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7036 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7038 correctly digest Windows/DOS formatted files (with CR/LF).
7040 iASL: Added a new option for "quiet mode" (-va) that produces only the
7041 compilation summary, not individual errors and warnings. Useful for large
7044 AcpiExec: Implemented a new option (-z) to enable a forced
7046 timeout that can be used to detect hang conditions during execution of
7048 code (includes both internal semaphores and AML-defined mutexes and
7051 Added new makefiles for the generation of acpica in a generic unix-like
7052 environment. These makefiles are intended to generate the acpica tools
7054 utilities from the original acpica git source tree structure.
7056 Test Suites: Updated and cleaned up the documentation files. Updated the
7057 copyrights to 2009, affecting all source files. Use the new version of
7059 with quiet mode. Increased the number of available semaphores in the
7061 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7063 an alternate implementation of the semaphore timeout to allow aslts to
7064 execute fully on Cygwin.
7066 ----------------------------------------
7067 20 March 2009. Summary of changes for version 20090320:
7069 1) ACPI CA Core Subsystem:
7071 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7073 unloads. Added a reader/writer locking mechanism to allow multiple
7075 namespace walks (readers), but block a dynamic table unload until it can
7077 exclusive write access to the namespace. This fixes a problem where a
7079 unload could (possibly catastrophically) delete the portion of the
7081 that is currently being examined by a walk. Adds a new file, utlock.c,
7083 implements the reader/writer lock mechanism. ACPICA BZ 749.
7085 Fixed a regression introduced in version 20090220 where a change to the
7087 handling could cause the ACPICA subsystem to access non-existent I/O
7090 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7092 FADT can contain both 32-bit and 64-bit versions of these addresses.
7093 Previously, the 64-bit versions were favored, meaning that if both 32 and
7095 versions were valid, but not equal, the 64-bit version was used. This was
7096 found to cause some machines to fail. Now, in this case, the 32-bit
7098 is used instead. This now matches the Windows behavior.
7100 Implemented a new mechanism to protect certain I/O ports. Provides
7102 compatibility and protects the standard PC I/O ports from access via AML
7103 code. Adds a new file, hwvalid.c
7105 Fixed a possible extraneous warning message from the FADT support. The
7106 message warns of a 32/64 length mismatch between the legacy and GAS
7107 definitions for a register.
7109 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7111 made obsolete by the port protection mechanism above. It was previously
7113 to validate the entire address range of an operation region, which could
7115 incorrect if the range included illegal ports, but fields within the
7116 operation region did not actually access those ports. Validation is now
7117 performed on a per-field basis instead of the entire region.
7119 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7120 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7122 means a read/modify/write when writing to the register. However, for
7124 registers, writing a one means clear the event. Writing a zero means
7126 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7128 and the ACPICA code now simply always writes a zero to the ignored bit.
7130 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7132 per the ACPI specification, for the control registers, preserve
7133 (read/modify/write) all bits that are defined as either reserved or
7136 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7137 When reading the register, zero the write-only bits as per the ACPI spec.
7138 ACPICA BZ 443. Lin Ming.
7140 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7141 wants to reply true to this request. The Windows strings are the only
7143 through the AML that are tested and known to work properly.
7146 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7147 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7149 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7150 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7152 2) iASL Compiler/Disassembler and Tools:
7154 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7158 ----------------------------------------
7159 20 February 2009. Summary of changes for version 20090220:
7161 1) ACPI CA Core Subsystem:
7163 Optimized the ACPI register locking. Removed locking for reads from the
7165 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7167 not required when reading the single-bit registers. The
7168 AcpiGetRegisterUnlocked function is no longer needed and has been
7170 This will improve performance for reads on these registers. ACPICA BZ
7173 Fixed the parameter validation for AcpiRead/Write. Now return
7174 AE_BAD_PARAMETER if the input register pointer is null, and
7177 the register has an address of zero. Previously, these cases simply
7179 AE_OK. For optional registers such as PM1B status/enable/control, the
7181 should check for a valid register address before calling. ACPICA BZ 748.
7183 Renamed the external ACPI bit register access functions. Renamed
7184 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7185 functions. The new names are AcpiReadBitRegister and
7186 AcpiWriteBitRegister.
7187 Also, restructured the code for these functions by simplifying the code
7189 and condensing duplicate code to reduce code size.
7191 Added new functions to transparently handle the possibly split PM1 A/B
7192 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7194 now handle the split registers for PM1 Status, Enable, and Control.
7199 Added a function to handle the PM1 control registers,
7200 AcpiHwWritePm1Control.
7201 This function writes both of the PM1 control registers (A/B). These
7203 are different than the PM1 A/B status and enable registers in that
7205 values can be written to the A/B registers. Most notably, the SLP_TYP
7207 can be different, as per the values returned from the _Sx predefined
7210 Removed an extra register write within AcpiHwClearAcpiStatus. This
7212 was writing an optional PM1B status register twice. The existing call to
7214 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7216 register. ACPICA BZ 751.
7218 Split out the PM1 Status registers from the FADT. Added new globals for
7220 registers (A/B), similar to the way the PM1 Enable registers are handled.
7221 Instead of overloading the FADT Event Register blocks. This makes the
7223 clearer and less prone to error.
7225 Fixed the warning message for when the platform contains too many ACPI
7227 for the default size of the global root table data structure. The
7229 for the truncation value was incorrect.
7231 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7232 obsolete macro, since it is now a simple reference to ->common.type.
7234 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7236 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7237 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7238 simply SLEEP_TYPE. ACPICA BZ 754.
7240 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7241 function is only needed on 64-bit host operating systems and is thus not
7242 included for 32-bit hosts.
7244 Debug output: print the input and result for invocations of the _OSI
7246 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7248 verbosity of this debug level. Len Brown.
7250 Example Code and Data Size: These are the sizes for the OS-independent
7251 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7252 debug version of the code includes the debug output trace mechanism and
7254 much larger code and data size.
7257 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7258 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7260 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7261 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7263 2) iASL Compiler/Disassembler and Tools:
7265 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7266 various legal performance profiles.
7268 ----------------------------------------
7269 23 January 2009. Summary of changes for version 20090123:
7271 1) ACPI CA Core Subsystem:
7273 Added the 2009 copyright to all module headers and signons. This affects
7274 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7275 the tools/utilities.
7277 Implemented a change to allow the host to override any ACPI table,
7279 dynamically loaded tables. Previously, only the DSDT could be replaced by
7281 host. With this change, the AcpiOsTableOverride interface is called for
7283 table found in the RSDT/XSDT during ACPICA initialization, and also
7285 a table is dynamically loaded via the AML Load operator.
7287 Updated FADT flag definitions, especially the Boot Architecture flags.
7289 Debugger: For the Find command, automatically pad the input ACPI name
7291 underscores if the name is shorter than 4 characters. This enables a
7293 with the actual namespace entry which is itself padded with underscores.
7295 Example Code and Data Size: These are the sizes for the OS-independent
7296 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7297 debug version of the code includes the debug output trace mechanism and
7299 much larger code and data size.
7302 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7303 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7305 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7306 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7308 2) iASL Compiler/Disassembler and Tools:
7310 Fix build error under Bison-2.4.
7312 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7314 flags. Now decode all flags, regardless of the FADT version. Flag output
7315 includes the FADT version which first defined each flag.
7317 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7319 DSDT). Windows only.
7321 ----------------------------------------
7322 04 December 2008. Summary of changes for version 20081204:
7324 1) ACPI CA Core Subsystem:
7326 The ACPICA Programmer Reference has been completely updated and revamped
7328 this release. This includes updates to the external interfaces, OSL
7329 interfaces, the overview sections, and the debugger reference.
7331 Several new ACPICA interfaces have been implemented and documented in the
7332 programmer reference:
7333 AcpiReset - Writes the reset value to the FADT-defined reset register.
7334 AcpiDisableAllGpes - Disable all available GPEs.
7335 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7336 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7337 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7338 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7339 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7341 Most of the public ACPI hardware-related interfaces have been moved to a
7343 file, components/hardware/hwxface.c
7345 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7346 register lengths within the FADT are now used, and the low level ACPI
7347 register access no longer hardcodes the ACPI register lengths. Given that
7348 there may be some risk in actually trusting the FADT register lengths, a
7350 time option was added to fall back to the default hardcoded lengths if
7352 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7353 option is set to true for now, and a warning is issued if a suspicious
7355 register length is overridden with the default value.
7357 Fixed a reference count issue in NsRepairObject. This problem was
7359 in version 20081031 as part of a fix to repair Buffer objects within
7362 Added semaphore support to the Linux/Unix application OS-services layer
7363 (OSL). ACPICA BZ 448. Lin Ming.
7365 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7367 be implemented in the OSL, or will binary semaphores be used instead.
7369 Example Code and Data Size: These are the sizes for the OS-independent
7370 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7371 debug version of the code includes the debug output trace mechanism and
7373 much larger code and data size.
7376 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7377 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7379 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7380 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7382 2) iASL Compiler/Disassembler and Tools:
7384 iASL: Completed the '-e' option to include additional ACPI tables in
7387 aid with disassembly and External statement generation. ACPICA BZ 742.
7391 iASL: Removed the "named object in while loop" error. The compiler cannot
7392 determine how many times a loop will execute. ACPICA BZ 730.
7394 Disassembler: Implemented support for FADT revision 2 (MS extension).
7398 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7401 ----------------------------------------
7402 31 October 2008. Summary of changes for version 20081031:
7404 1) ACPI CA Core Subsystem:
7406 Restructured the ACPICA header files into public/private. acpi.h now
7408 only the "public" acpica headers. All other acpica headers are "private"
7410 should not be included by acpica users. One new file, accommon.h is used
7412 include the commonly used private headers for acpica code generation.
7414 plans include moving all private headers to a new subdirectory.
7416 Implemented an automatic Buffer->String return value conversion for
7417 predefined ACPI methods. For these methods (such as _BIF), added
7419 conversion for return objects that are required to be a String, but a
7421 was found instead. This can happen when reading string battery data from
7423 operation region, because it used to be difficult to convert the data
7425 buffer to string from within the ASL. Ensures that the host OS is
7427 with a valid null-terminated string. Linux BZ 11822.
7429 Updated the FACS waking vector interfaces. Split
7430 AcpiSetFirmwareWakingVector
7431 into two: one for the 32-bit vector, another for the 64-bit vector. This
7433 required because the host OS must setup the wake much differently for
7435 vector (real vs. protected mode, etc.) and the interface itself should
7438 deciding which vector to use. Also, eliminated the
7439 GetFirmwareWakingVector
7440 interface, as it served no purpose (only the firmware reads the vector,
7442 only writes the vector.) ACPICA BZ 731.
7444 Implemented a mechanism to escape infinite AML While() loops. Added a
7446 counter to force exit from AML While loops if the count becomes too
7448 This can occur in poorly written AML when the hardware does not respond
7449 within a while loop and the loop does not implement a timeout. The
7451 loop count is configurable. A new exception code is returned when a loop
7453 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7455 Optimized the execution of AML While loops. Previously, a control state
7456 object was allocated and freed for each execution of the loop. The
7457 optimization is to simply reuse the control state for each iteration.
7459 speeds up the raw loop execution time by about 5%.
7461 Enhanced the implicit return mechanism. For Windows compatibility, return
7463 implicit integer of value zero for methods that contain no executable
7465 Such methods are seen in the field as stubs (presumably), and can cause
7466 drivers to fail if they expect a return value. Lin Ming.
7468 Allow multiple backslashes as root prefixes in namepaths. In a fully
7469 qualified namepath, allow multiple backslash prefixes. This can happen
7471 is seen in the field) because of the use of a double-backslash in strings
7472 (since backslash is the escape character) causing confusion. ACPICA BZ
7476 Emit a warning if two different FACS or DSDT tables are discovered in the
7477 FADT. Checks if there are two valid but different addresses for the FACS
7479 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7481 Consolidated the method argument count validation code. Merged the code
7483 validates control method argument counts into the predefined validation
7484 module. Eliminates possible multiple warnings for incorrect argument
7487 Implemented ACPICA example code. Includes code for ACPICA initialization,
7488 handler installation, and calling a control method. Available at
7489 source/tools/examples.
7491 Added a global pointer for FACS table to simplify internal FACS access.
7493 the global pointer instead of using AcpiGetTableByIndex for each FACS
7495 This simplifies the code for the Global Lock and the Firmware Waking
7498 Example Code and Data Size: These are the sizes for the OS-independent
7499 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7500 debug version of the code includes the debug output trace mechanism and
7502 much larger code and data size.
7505 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7506 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7508 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7509 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7511 2) iASL Compiler/Disassembler and Tools:
7513 iASL: Improved disassembly of external method calls. Added the -e option
7515 allow the inclusion of additional ACPI tables to help with the
7518 method invocations and the generation of external declarations during the
7519 disassembly. Certain external method invocations cannot be disassembled
7520 properly without the actual declaration of the method. Use the -e option
7522 include the table where the external method(s) are actually declared.
7524 useful for disassembling SSDTs that make method calls back to the master
7525 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7527 -e dsdt.aml ssdt1.aml
7529 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7530 problem where the use of an alias within a namepath would result in a not
7531 found error or cause the compiler to fault. Also now allows forward
7532 references from the Alias operator itself. ACPICA BZ 738.
7534 ----------------------------------------
7535 26 September 2008. Summary of changes for version 20080926:
7537 1) ACPI CA Core Subsystem:
7539 Designed and implemented a mechanism to validate predefined ACPI methods
7541 objects. This code validates the predefined ACPI objects (objects whose
7543 start with underscore) that appear in the namespace, at the time they are
7544 evaluated. The argument count and the type of the returned object are
7545 validated against the ACPI specification. The purpose of this validation
7547 to detect problems with the BIOS-implemented predefined ACPI objects
7549 the results are returned to the ACPI-related drivers. Future enhancements
7551 include actual repair of incorrect return objects where possible. Two new
7552 files are nspredef.c and acpredef.h.
7554 Fixed a fault in the AML parser if a memory allocation fails during the
7556 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7558 Fixed an issue with implicit return compatibility. This change improves
7560 implicit return mechanism to be more compatible with the MS interpreter.
7562 Ming, ACPICA BZ 349.
7564 Implemented support for zero-length buffer-to-string conversions. Allow
7566 length strings during interpreter buffer-to-string conversions. For
7568 during the ToDecimalString and ToHexString operators, as well as implicit
7569 conversions. Fiodor Suietov, ACPICA BZ 585.
7571 Fixed two possible memory leaks in the error exit paths of
7572 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7574 similar in that they use a stack of state objects in order to eliminate
7575 recursion. The stack must be fully unwound and deallocated if an error
7576 occurs. Lin Ming. ACPICA BZ 383.
7578 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7580 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7581 Moore ACPICA BZ 442.
7583 Removed the obsolete version number in module headers. Removed the
7584 "$Revision" number that appeared in each module header. This version
7586 was useful under SourceSafe and CVS, but has no meaning under git. It is
7588 only incorrect, it could also be misleading.
7590 Example Code and Data Size: These are the sizes for the OS-independent
7591 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7592 debug version of the code includes the debug output trace mechanism and
7594 much larger code and data size.
7597 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7598 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7600 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7601 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7603 ----------------------------------------
7604 29 August 2008. Summary of changes for version 20080829:
7606 1) ACPI CA Core Subsystem:
7608 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
7609 Reference. Changes include the elimination of cheating on the Object
7611 for the DdbHandle subtype, addition of a reference class field to
7612 differentiate the various reference types (instead of an AML opcode), and
7614 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
7616 Reduce an error to a warning for an incorrect method argument count.
7617 Previously aborted with an error if too few arguments were passed to a
7618 control method via the external ACPICA interface. Now issue a warning
7620 and continue. Handles the case where the method inadvertently declares
7622 many arguments, but does not actually use the extra ones. Applies mainly
7624 the predefined methods. Lin Ming. Linux BZ 11032.
7626 Disallow the evaluation of named object types with no intrinsic value.
7628 AE_TYPE for objects that have no value and therefore evaluation is
7630 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
7632 these types were allowed, but an exception would be generated at some
7634 during the evaluation. Now, the error is generated up front.
7636 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
7637 (nsnames.c). Fixes a leak in the error exit path.
7639 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
7641 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
7643 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
7646 Removed obsolete and/or unused exception codes from the acexcep.h header.
7647 There is the possibility that certain device drivers may be affected if
7649 use any of these exceptions.
7651 The ACPICA documentation has been added to the public git source tree,
7653 acpica/documents. Included are the ACPICA programmer reference, the iASL
7654 compiler reference, and the changes.txt release logfile.
7656 Example Code and Data Size: These are the sizes for the OS-independent
7657 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7658 debug version of the code includes the debug output trace mechanism and
7660 much larger code and data size.
7663 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7664 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7666 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7667 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7669 2) iASL Compiler/Disassembler and Tools:
7671 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
7672 defines _SCP with 3 arguments. Previous versions defined it with only 1
7673 argument. iASL now allows both definitions.
7675 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
7677 length subtables when disassembling ACPI tables. Also fixed a couple of
7678 errors where a full 16-bit table type field was not extracted from the
7682 acpisrc: Improve comment counting mechanism for generating source code
7683 statistics. Count first and last lines of multi-line comments as
7685 not comment lines. Handle Linux legal header in addition to standard
7689 ----------------------------------------
7691 29 July 2008. Summary of changes for version 20080729:
7693 1) ACPI CA Core Subsystem:
7695 Fix a possible deadlock in the GPE dispatch. Remove call to
7696 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
7698 to acquire the GPE lock but can deadlock since the GPE lock is already
7700 at dispatch time. This code was introduced in version 20060831 as a
7702 to Linux BZ 6881 and has since been removed from Linux.
7704 Add a function to dereference returned reference objects. Examines the
7706 object from a call to AcpiEvaluateObject. Any Index or RefOf references
7708 automatically dereferenced in an attempt to return something useful
7710 reference types cannot be converted into an external ACPI_OBJECT.)
7712 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7714 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7715 subtables for the MADT and one new subtable for the SRAT. Includes
7716 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7718 Specification, June 2008.
7720 Additional error checking for pathname utilities. Add error check after
7722 calls to AcpiNsGetPathnameLength. Add status return from
7723 AcpiNsBuildExternalPath and check after all calls. Add parameter
7725 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7727 Return status from the global init function AcpiUtGlobalInitialize. This
7729 used by both the kernel subsystem and the utilities such as iASL
7731 The function could possibly fail when the caches are initialized. Yang
7734 Add a function to decode reference object types to strings. Created for
7735 improved error messages.
7737 Improve object conversion error messages. Better error messages during
7739 conversion from internal to the external ACPI_OBJECT. Used for external
7741 to AcpiEvaluateObject.
7743 Example Code and Data Size: These are the sizes for the OS-independent
7744 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7745 debug version of the code includes the debug output trace mechanism and
7747 much larger code and data size.
7750 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7751 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7753 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7754 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7756 2) iASL Compiler/Disassembler and Tools:
7758 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7760 introduced in version 20080701. If the object being evaluated (via
7762 command) is not a method, the debugger can hang while trying to obtain
7764 existent parameters.
7766 iASL: relax error for using reserved "_T_x" identifiers. These names can
7767 appear in a disassembled ASL file if they were emitted by the original
7768 compiler. Instead of issuing an error or warning and forcing the user to
7769 manually change these names, issue a remark instead.
7771 iASL: error if named object created in while loop. Emit an error if any
7773 object is created within a While loop. If allowed, this code will
7776 run-time error on the second iteration of the loop when an attempt is
7779 create the same named object twice. ACPICA bugzilla 730.
7781 iASL: Support absolute pathnames for include files. Add support for
7783 pathnames within the Include operator. previously, only relative
7787 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7789 The ACPI spec requires one interrupt minimum. BZ 423
7791 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7792 Handles the case for the Interrupt Resource Descriptor where
7793 the ResourceSource argument is omitted but ResourceSourceIndex
7794 is present. Now leave room for the Index. BZ 426
7796 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7798 where an error message is emitted if the target does not exist. BZ 516
7800 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7801 (get ACPI tables on Windows). This was apparently broken in version
7804 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7806 the EOF happens immediately after the last table in the input file. Print
7807 completion message. Previously, no message was displayed in this case.
7809 ----------------------------------------
7810 01 July 2008. Summary of changes for version 20080701:
7812 0) Git source tree / acpica.org
7814 Fixed a problem where a git-clone from http would not transfer the entire
7817 1) ACPI CA Core Subsystem:
7819 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7820 enable bit. Now performs a read-change-write of the enable register
7822 of simply writing out the cached enable mask. This will prevent
7824 enabling of GPEs if a rogue GPE is received during initialization (before
7826 handlers are installed.)
7828 Implemented a copy for dynamically loaded tables. Previously, dynamically
7829 loaded tables were simply mapped - but on some machines this memory is
7830 corrupted after suspend. Now copy the table to a local buffer. For the
7831 OpRegion case, added checksum verify. Use the table length from the table
7832 header, not the region length. For the Buffer case, use the table length
7833 also. Dennis Noordsij, Bob Moore. BZ 10734
7835 Fixed a problem where the same ACPI table could not be dynamically loaded
7837 unloaded more than once. Without this change, a table cannot be loaded
7839 once it has been loaded/unloaded one time. The current mechanism does not
7840 unregister a table upon an unload. During a load, if the same table is
7842 this no longer returns an exception. BZ 722
7844 Fixed a problem where the wrong descriptor length was calculated for the
7845 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7847 are calculated as 12 bytes long, but the actual length in the internal
7848 descriptor is 16 because of the round-up to 8 on the 64-bit build.
7850 by Linn Crosetto. BZ 728
7852 Fixed a possible memory leak in the Unload operator. The DdbHandle
7854 by Load() did not have its reference count decremented during unload,
7856 to a memory leak. Lin Ming. BZ 727
7858 Fixed a possible memory leak when deleting thermal/processor objects. Any
7859 associated notify handlers (and objects) were not being deleted. Fiodor
7862 Fixed the ordering of the ASCII names in the global mutex table to match
7864 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
7866 Vegard Nossum. BZ 726
7868 Enhanced the AcpiGetObjectInfo interface to return the number of required
7869 arguments if the object is a control method. Added this call to the
7871 so the proper number of default arguments are passed to a method. This
7872 prevents a warning when executing methods from AcpiExec.
7874 Added a check for an invalid handle in AcpiGetObjectInfo. Return
7875 AE_BAD_PARAMETER if input handle is invalid. BZ 474
7877 Fixed an extraneous warning from exconfig.c on the 64-bit build.
7879 Example Code and Data Size: These are the sizes for the OS-independent
7880 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7881 debug version of the code includes the debug output trace mechanism and
7883 much larger code and data size.
7886 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7887 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7889 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7890 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7892 2) iASL Compiler/Disassembler and Tools:
7894 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7895 resource descriptor names.
7897 iASL: Detect invalid ASCII characters in input (windows version). Removed
7899 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7900 characters in the input. BZ 441
7902 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7904 "result of operation not used" warning when the DDB handle returned from
7905 LoadTable is not used. The warning is not needed. BZ 590
7907 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7910 pass address of table to the AML. Added option to disable OpRegion
7912 to allow creation of an OpRegion with a real address that was passed to
7914 All of this allows testing of the Load and Unload operators from
7917 Debugger: update tables command for unloaded tables. Handle unloaded
7919 and use the standard table header output routine.
7921 ----------------------------------------
7922 09 June 2008. Summary of changes for version 20080609:
7924 1) ACPI CA Core Subsystem:
7926 Implemented a workaround for reversed _PRT entries. A significant number
7928 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7929 change dynamically detects and repairs this problem. Provides
7931 with MS ACPI. BZ 6859
7933 Simplified the internal ACPI hardware interfaces to eliminate the locking
7934 flag parameter from Register Read/Write. Added a new external interface,
7935 AcpiGetRegisterUnlocked.
7937 Fixed a problem where the invocation of a GPE control method could hang.
7939 was a regression introduced in 20080514. The new method argument count
7940 validation mechanism can enter an infinite loop when a GPE method is
7941 dispatched. Problem fixed by removing the obsolete code that passed GPE
7943 information to the notify handler via the control method parameter
7946 Fixed a problem where the _SST execution status was incorrectly returned
7948 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7950 20080514. _SST is optional and a NOT_FOUND exception should never be
7953 Fixed a problem where a deleted object could be accessed from within the
7955 parser. This was a regression introduced in version 20080123 as a fix for
7957 Unload operator. Lin Ming. BZ 10669
7959 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7961 and eliminated the use of a negative index in a loop. Operands are now
7962 displayed in the correct order, not backwards. This also fixes a
7964 introduced in 20080514 on 64-bit systems where the elimination of
7965 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7968 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7970 path did not delete a locally allocated structure.
7972 Updated definitions for the DMAR and SRAT tables to synchronize with the
7973 current specifications. Includes disassembler support.
7975 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7976 loop termination value was used. Loop terminated on iteration early,
7978 one mutex. Linn Crosetto
7980 Example Code and Data Size: These are the sizes for the OS-independent
7981 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7982 debug version of the code includes the debug output trace mechanism and
7984 much larger code and data size.
7987 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7988 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7990 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7991 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7993 2) iASL Compiler/Disassembler and Tools:
7995 Disassembler: Implemented support for EisaId() within _CID objects. Now
7996 disassemble integer _CID objects back to EisaId invocations, including
7997 multiple integers within _CID packages. Includes single-step support for
8000 Disassembler: Added support for DMAR and SRAT table definition changes.
8002 ----------------------------------------
8003 14 May 2008. Summary of changes for version 20080514:
8005 1) ACPI CA Core Subsystem:
8007 Fixed a problem where GPEs were enabled too early during the ACPICA
8008 initialization. This could lead to "handler not installed" errors on some
8009 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8011 ensures that all operation regions and devices throughout the namespace
8013 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8015 Implemented a change to the enter sleep code. Moved execution of the _GTS
8016 method to just before setting sleep enable bit. The execution was moved
8018 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8019 immediately before the SLP_EN bit is set, as per the ACPI specification.
8022 Implemented a fix to disable unknown GPEs (2nd version). Now always
8024 the GPE, even if ACPICA thinks that that it is already disabled. It is
8025 possible that the AML or some other code has enabled the GPE unbeknownst
8029 Fixed a problem with the Field operator where zero-length fields would
8031 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8033 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8035 Implemented a fix for the Load operator, now load the table at the
8037 root. This reverts a change introduced in version 20071019. The table is
8039 loaded at the namespace root even though this goes against the ACPI
8040 specification. This provides compatibility with other ACPI
8042 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8045 Fixed a problem where ACPICA would not Load() tables with unusual
8047 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8048 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8049 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8051 signatures, ACPICA must be compatible. BZ 10454.
8053 Fixed a possible negative array index in AcpiUtValidateException. Added
8055 fields to the exception string arrays to eliminate a -1 subtraction on
8059 Updated the debug tracking macros to reduce overall code and data size.
8060 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8061 instead of pointers to static strings. Jan Beulich and Bob Moore.
8063 Implemented argument count checking in control method invocation via
8064 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8066 many. This applies only to extern programmatic control method execution,
8068 method-to-method calls within the AML. Lin Ming.
8070 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8072 longer needed, especially with the removal of 16-bit support. It was
8074 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8077 32/64-bit platforms is required.
8079 Added the C const qualifier for appropriate string constants -- mostly
8080 MODULE_NAME and printf format strings. Jan Beulich.
8082 Example Code and Data Size: These are the sizes for the OS-independent
8083 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8084 debug version of the code includes the debug output trace mechanism and
8086 much larger code and data size.
8089 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8090 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8092 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8093 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8095 2) iASL Compiler/Disassembler and Tools:
8097 Implemented ACPI table revision ID validation in the disassembler. Zero
8099 always invalid. For DSDTs, the ID controls the interpreter integer width.
8101 means 32-bit and this is unusual. 2 or greater is 64-bit.
8103 ----------------------------------------
8104 21 March 2008. Summary of changes for version 20080321:
8106 1) ACPI CA Core Subsystem:
8108 Implemented an additional change to the GPE support in order to suppress
8109 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8111 disable incoming GPEs that are neither enabled nor disabled -- meaning
8113 the GPE is unknown to the system. This should prevent future interrupt
8115 from that GPE. BZ 6217 (Zhang Rui)
8117 Fixed a problem where NULL package elements were not returned to the
8118 AcpiEvaluateObject interface correctly. The element was simply ignored
8119 instead of returning a NULL ACPI_OBJECT package element, potentially
8121 a buffer overflow and/or confusing the caller who expected a fixed number
8123 elements. BZ 10132 (Lin Ming, Bob Moore)
8125 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8127 Qword), Field, BankField, and IndexField operators when invoked from
8129 an executing control method. In this case, these operators created
8131 nodes that were incorrectly left marked as permanent nodes instead of
8132 temporary nodes. This could cause a problem if there is race condition
8133 between an exiting control method and a running namespace walk. (Reported
8137 Fixed a problem where the CreateField and CreateXXXField operators would
8138 incorrectly allow duplicate names (the name of the field) with no
8142 Implemented several changes for Notify handling. Added support for new
8144 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8145 PowerResource objects is no longer allowed, as per the ACPI
8147 (Bob Moore, Zhang Rui)
8149 All Reference Objects returned via the AcpiEvaluateObject interface are
8151 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8153 NULL objects - either NULL package elements or unresolved named
8156 Fixed a problem where an extraneous debug message was produced for
8158 objects (when debugging enabled). The message "Package List length larger
8159 than NumElements count" is now produced in the correct case, and is now
8161 error message rather than a debug message. Added a debug message for the
8162 opposite case, where NumElements is larger than the Package List (the
8164 will be padded out with NULL elements as per the ACPI spec.)
8166 Implemented several improvements for the output of the ASL "Debug" object
8168 clarify and keep all data for a given object on one output line.
8170 Fixed two size calculation issues with the variable-length Start
8172 resource descriptor.
8174 Example Code and Data Size: These are the sizes for the OS-independent
8175 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8176 debug version of the code includes the debug output trace mechanism and
8178 a much larger code and data size.
8181 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8182 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8184 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8185 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8187 2) iASL Compiler/Disassembler and Tools:
8189 Fixed a problem with the use of the Switch operator where execution of
8191 containing method by multiple concurrent threads could cause an
8192 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8193 actual Switch opcode, it must be simulated with local named temporary
8194 variables and if/else pairs. The solution chosen was to mark any method
8196 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8199 ----------------------------------------
8200 13 February 2008. Summary of changes for version 20080213:
8202 1) ACPI CA Core Subsystem:
8204 Implemented another MS compatibility design change for GPE/Notify
8206 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8208 complete first. It is expected that the OSL will queue the enable request
8209 behind all pending notify requests (may require changes to the local host
8211 in AcpiOsExecute). Alexey Starikovskiy.
8213 Fixed a problem where buffer and package objects passed as arguments to a
8214 control method via the external AcpiEvaluateObject interface could cause
8216 AE_AML_INTERNAL exception depending on the order and type of operators
8217 executed by the target control method.
8219 Fixed a problem where resource descriptor size optimization could cause a
8220 problem when a _CRS resource template is passed to a _SRS method. The
8222 resource template must use the same descriptors (with the same size) as
8223 returned from _CRS. This change affects the following resource
8225 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8228 Fixed a problem where a CopyObject to RegionField, BankField, and
8230 objects did not perform an implicit conversion as it should. These types
8232 retain their initial type permanently as per the ACPI specification.
8234 a CopyObject to all other object types should not perform an implicit
8235 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8237 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8238 match device CIDs did not examine the entire list of available CIDs, but
8239 instead aborted on the first non-matching CID. Andrew Patterson.
8241 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8243 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8244 truncating the upper dword of a 64-bit value. This macro is only used to
8245 display debug output, so no incorrect calculations were made. Also,
8246 reimplemented the macro so that a 64-bit shift is not performed by
8247 inefficient compilers.
8249 Added missing va_end statements that should correspond with each va_start
8252 Example Code and Data Size: These are the sizes for the OS-independent
8253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8254 debug version of the code includes the debug output trace mechanism and
8256 a much larger code and data size.
8259 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8260 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8262 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8263 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8265 2) iASL Compiler/Disassembler and Tools:
8267 Implemented full disassembler support for the following new ACPI tables:
8268 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8269 complicated HEST table. These tables support the Windows Hardware Error
8270 Architecture (WHEA).
8272 ----------------------------------------
8273 23 January 2008. Summary of changes for version 20080123:
8275 1) ACPI CA Core Subsystem:
8277 Added the 2008 copyright to all module headers and signons. This affects
8278 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8279 the tools/utilities.
8281 Fixed a problem with the SizeOf operator when used with Package and
8283 objects. These objects have deferred execution for some arguments, and
8285 execution is now completed before the SizeOf is executed. This problem
8287 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8291 Implemented an enhancement to the interpreter "slack mode". In the
8294 an explicit return or an implicitly returned object from the last
8296 opcode, a control method will now implicitly return an integer of value 0
8298 Microsoft compatibility. (Lin Ming) BZ 392
8300 Fixed a problem with the Load operator where an exception was not
8303 the case where the table is already loaded. (Lin Ming) BZ 463
8305 Implemented support for the use of DDBHandles as an Indexed Reference, as
8307 the ACPI spec. (Lin Ming) BZ 486
8309 Implemented support for UserTerm (Method invocation) for the Unload
8311 as per the ACPI spec. (Lin Ming) BZ 580
8313 Fixed a problem with the LoadTable operator where the OemId and
8315 input strings could cause unexpected failures if they were shorter than
8317 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8319 Implemented support for UserTerm (Method invocation) for the Unload
8321 as per the ACPI spec. (Lin Ming) BZ 580
8323 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8325 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8327 Example Code and Data Size: These are the sizes for the OS-independent
8328 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8329 debug version of the code includes the debug output trace mechanism and
8331 a much larger code and data size.
8334 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8335 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8337 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8338 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8340 2) iASL Compiler/Disassembler and Tools:
8342 Implemented support in the disassembler for checksum validation on
8344 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8346 header dump at the start of the disassembly.
8348 Implemented additional debugging information in the namespace listing
8350 created during compilation. In addition to the namespace hierarchy, the
8352 pathname to each namespace object is displayed.
8354 Fixed a problem with the disassembler where invalid ACPI tables could
8356 faults or infinite loops.
8358 Fixed an unexpected parse error when using the optional "parameter types"
8359 list in a control method declaration. (Lin Ming) BZ 397
8361 Fixed a problem where two External declarations with the same name did
8363 cause an error (Lin Ming) BZ 509
8365 Implemented support for full TermArgs (adding Argx, Localx and method
8366 invocation) for the ParameterData parameter to the LoadTable operator.
8370 ----------------------------------------
8371 19 December 2007. Summary of changes for version 20071219:
8373 1) ACPI CA Core Subsystem:
8375 Implemented full support for deferred execution for the TermArg string
8376 arguments for DataTableRegion. This enables forward references and full
8377 operand resolution for the three string arguments. Similar to
8379 deferred argument execution.) Lin Ming. BZ 430
8381 Implemented full argument resolution support for the BankValue argument
8383 BankField. Previously, only constants were supported, now any TermArg may
8385 used. Lin Ming BZ 387, 393
8387 Fixed a problem with AcpiGetDevices where the search of a branch of the
8388 device tree could be terminated prematurely. In accordance with the ACPI
8389 specification, the search down the current branch is terminated if a
8391 is both not present and not functional (instead of just not present.)
8395 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8397 the underlying AML code changed the GPE enable registers. Now, any
8399 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8401 instead of simply ignored. Rui Zhang.
8403 Fixed a problem with Index Fields where the Index register was
8405 limited to a maximum of 32 bits. Now any size may be used.
8407 Fixed a couple memory leaks associated with "implicit return" objects
8409 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8411 Example Code and Data Size: These are the sizes for the OS-independent
8412 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8413 debug version of the code includes the debug output trace mechanism and
8415 a much larger code and data size.
8418 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8419 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8421 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8422 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8424 ----------------------------------------
8425 14 November 2007. Summary of changes for version 20071114:
8427 1) ACPI CA Core Subsystem:
8429 Implemented event counters for each of the Fixed Events, the ACPI SCI
8430 (interrupt) itself, and control methods executed. Named
8431 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8433 should be useful for debugging and statistics.
8435 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8436 contents of the various event counters. Returns the current values for
8437 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8438 AcpiMethodCount. The interface can be expanded in the future if new
8440 are added. Device drivers should use this interface rather than access
8444 Fixed a problem with the FromBCD and ToBCD operators. With some
8446 the ShortDivide function worked incorrectly, causing problems with the
8448 functions with large input values. A truncation from 64-bit to 32-bit
8449 inadvertently occurred. Internal BZ 435. Lin Ming
8451 Fixed a problem with Index references passed as method arguments.
8453 passed as arguments to control methods were dereferenced immediately
8455 control was passed to the called method). The references are now
8457 passed directly to the called method. BZ 5389. Lin Ming
8459 Fixed a problem with CopyObject used in conjunction with the Index
8461 The reference was incorrectly dereferenced before the copy. The reference
8463 now correctly copied. BZ 5391. Lin Ming
8465 Fixed a problem with Control Method references within Package objects.
8467 references are now correctly generated. This completes the package
8468 construction overhaul that began in version 20071019.
8470 Example Code and Data Size: These are the sizes for the OS-independent
8471 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8472 debug version of the code includes the debug output trace mechanism and
8474 a much larger code and data size.
8477 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8478 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8480 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8481 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8484 2) iASL Compiler/Disassembler and Tools:
8486 The AcpiExec utility now installs handlers for all of the predefined
8487 Operation Region types. New types supported are: PCI_Config, CMOS, and
8490 Fixed a problem with the 64-bit version of AcpiExec where the extended
8492 bit) address fields for the DSDT and FACS within the FADT were not being
8493 used, causing truncation of the upper 32-bits of these addresses. Lin
8497 ----------------------------------------
8498 19 October 2007. Summary of changes for version 20071019:
8500 1) ACPI CA Core Subsystem:
8502 Fixed a problem with the Alias operator when the target of the alias is a
8503 named ASL operator that opens a new scope -- Scope, Device,
8505 Processor, and ThermalZone. In these cases, any children of the original
8506 operator could not be accessed via the alias, potentially causing
8508 AE_NOT_FOUND exceptions. (BZ 9067)
8510 Fixed a problem with the Package operator where all named references were
8511 created as object references and left otherwise unresolved. According to
8513 ACPI specification, a Package can only contain Data Objects or references
8515 control methods. The implication is that named references to Data Objects
8516 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8517 immediately upon package creation. This is the approach taken with this
8518 change. References to all other named objects (Methods, Devices, Scopes,
8519 etc.) are all now properly created as reference objects. (BZ 5328)
8521 Reverted a change to Notify handling that was introduced in version
8522 20070508. This version changed the Notify handling from asynchronous to
8523 fully synchronous (Device driver Notify handling with respect to the
8525 ASL operator). It was found that this change caused more problems than it
8526 solved and was removed by most users.
8528 Fixed a problem with the Increment and Decrement operators where the type
8530 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8533 Fixed a problem with the Load and LoadTable operators where the table
8534 location within the namespace was ignored. Instead, the table was always
8535 loaded into the root or current scope. Lin Ming.
8537 Fixed a problem with the Load operator when loading a table from a buffer
8538 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8540 Fixed a problem with the Debug object where a store of a DdbHandle
8542 object to the Debug object could cause a fault.
8544 Added a table checksum verification for the Load operator, in the case
8546 the load is from a buffer. (BZ 578).
8548 Implemented additional parameter validation for the LoadTable operator.
8550 length of the input strings SignatureString, OemIdString, and OemTableId
8552 now checked for maximum lengths. (BZ 582) Lin Ming.
8554 Example Code and Data Size: These are the sizes for the OS-independent
8555 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8556 debug version of the code includes the debug output trace mechanism and
8558 a much larger code and data size.
8561 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8562 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8564 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8565 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8568 2) iASL Compiler/Disassembler:
8570 Fixed a problem where if a single file was specified and the file did not
8571 exist, no error message was emitted. (Introduced with wildcard support in
8574 ----------------------------------------
8575 19 September 2007. Summary of changes for version 20070919:
8577 1) ACPI CA Core Subsystem:
8579 Designed and implemented new external interfaces to install and remove
8580 handlers for ACPI table-related events. Current events that are defined
8582 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8583 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8584 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8586 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8587 (acpi_serialized option on Linux) could cause some systems to hang during
8588 initialization. (Bob Moore) BZ 8171
8590 Fixed a problem where objects of certain types (Device, ThermalZone,
8591 Processor, PowerResource) can be not found if they are declared and
8592 referenced from within the same control method (Lin Ming) BZ 341
8594 Example Code and Data Size: These are the sizes for the OS-independent
8595 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8596 debug version of the code includes the debug output trace mechanism and
8598 a much larger code and data size.
8601 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8602 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8604 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8605 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8608 2) iASL Compiler/Disassembler:
8610 Implemented support to allow multiple files to be compiled/disassembled
8613 single invocation. This includes command line wildcard support for both
8615 Windows and Unix versions of the compiler. This feature simplifies the
8616 disassembly and compilation of multiple ACPI tables in a single
8619 ----------------------------------------
8620 08 May 2007. Summary of changes for version 20070508:
8622 1) ACPI CA Core Subsystem:
8624 Implemented a Microsoft compatibility design change for the handling of
8626 Notify AML operator. Previously, notify handlers were dispatched and
8627 executed completely asynchronously in a deferred thread. The new design
8628 still executes the notify handlers in a different thread, but the
8630 thread that executed the Notify() now waits at a synchronization point
8632 the notify handler to complete. Some machines depend on a synchronous
8634 operator in order to operate correctly.
8636 Implemented support to allow Package objects to be passed as method
8637 arguments to the external AcpiEvaluateObject interface. Previously, this
8638 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
8639 implemented since there were no reserved control methods that required it
8642 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
8644 contained invalid non-zero values in reserved fields could cause later
8645 failures because these fields have meaning in later revisions of the
8647 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
8649 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
8651 Fixed a problem where the Global Lock handle was not properly updated if
8653 thread that acquired the Global Lock via executing AML code then
8655 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
8659 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
8660 could be corrupted if the interrupt being removed was at the head of the
8661 list. Reported by Linn Crosetto.
8663 Example Code and Data Size: These are the sizes for the OS-independent
8664 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8665 debug version of the code includes the debug output trace mechanism and
8667 a much larger code and data size.
8670 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8671 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8673 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8674 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8676 ----------------------------------------
8677 20 March 2007. Summary of changes for version 20070320:
8679 1) ACPI CA Core Subsystem:
8681 Implemented a change to the order of interpretation and evaluation of AML
8682 operand objects within the AML interpreter. The interpreter now evaluates
8683 operands in the order that they appear in the AML stream (and the
8684 corresponding ASL code), instead of in the reverse order (after the
8686 operand list has been parsed). The previous behavior caused several
8688 incompatibilities with the Microsoft AML interpreter as well as being
8689 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
8691 Implemented a change to the ACPI Global Lock support. All interfaces to
8693 global lock now allow the same thread to acquire the lock multiple times.
8694 This affects the AcpiAcquireGlobalLock external interface to the global
8696 as well as the internal use of the global lock to support AML fields -- a
8697 control method that is holding the global lock can now simultaneously
8699 AML fields that require global lock protection. Previously, in both
8701 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
8703 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
8704 Controller. There is no change to the behavior of the AML Acquire
8706 as this can already be used to acquire a mutex multiple times by the same
8707 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8709 Fixed a problem where invalid objects could be referenced in the AML
8710 Interpreter after error conditions. During operand evaluation, ensure
8712 the internal "Return Object" field is cleared on error and only valid
8713 pointers are stored there. Caused occasional access to deleted objects
8715 resulted in "large reference count" warning messages. Valery Podrezov.
8717 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8719 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8722 Fixed an internal problem with the handling of result objects on the
8723 interpreter result stack. BZ 7872. Valery Podrezov.
8725 Removed obsolete code that handled the case where AML_NAME_OP is the
8727 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8728 7874. Valery Podrezov.
8730 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8733 remnant from the previously discontinued 16-bit support.
8735 Example Code and Data Size: These are the sizes for the OS-independent
8736 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8737 debug version of the code includes the debug output trace mechanism and
8739 a much larger code and data size.
8742 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8743 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8745 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8746 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8748 ----------------------------------------
8749 26 January 2007. Summary of changes for version 20070126:
8751 1) ACPI CA Core Subsystem:
8753 Added the 2007 copyright to all module headers and signons. This affects
8754 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8757 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8758 during a table load. A bad pointer was passed in the case where the DSDT
8760 overridden, causing a fault in this case.
8762 Example Code and Data Size: These are the sizes for the OS-independent
8763 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8764 debug version of the code includes the debug output trace mechanism and
8766 a much larger code and data size.
8769 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8770 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8772 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8773 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8775 ----------------------------------------
8776 15 December 2006. Summary of changes for version 20061215:
8778 1) ACPI CA Core Subsystem:
8780 Support for 16-bit ACPICA has been completely removed since it is no
8782 necessary and it clutters the code. All 16-bit macros, types, and
8783 conditional compiles have been removed, cleaning up and simplifying the
8785 across the entire subsystem. DOS support is no longer needed since the
8786 bootable Linux firmware kit is now available.
8788 The handler for the Global Lock is now removed during AcpiTerminate to
8789 enable a clean subsystem restart, via the implementation of the
8790 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8793 Implemented enhancements to the multithreading support within the
8795 to enable improved multithreading debugging and evaluation of the
8799 Debugger: Enhanced the Statistics/Memory command to emit the total
8801 memory used during the execution, as well as the maximum memory consumed
8803 each of the various object types. (Valery Podrezov)
8805 Example Code and Data Size: These are the sizes for the OS-independent
8806 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8807 debug version of the code includes the debug output trace mechanism and
8809 a much larger code and data size.
8812 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8813 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8815 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8816 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8819 2) iASL Compiler/Disassembler and Tools:
8821 AcpiExec: Implemented a new option (-m) to display full memory use
8822 statistics upon subsystem/program termination. (Valery Podrezov)
8824 ----------------------------------------
8825 09 November 2006. Summary of changes for version 20061109:
8827 1) ACPI CA Core Subsystem:
8829 Optimized the Load ASL operator in the case where the source operand is
8831 operation region. Simply map the operation region memory, instead of
8832 performing a bytewise read. (Region must be of type SystemMemory, see
8835 Fixed the Load ASL operator for the case where the source operand is a
8836 region field. A buffer object is also allowed as the source operand. BZ
8839 Fixed a problem where the Load ASL operator allowed the source operand to
8841 an operation region of any type. It is now restricted to regions of type
8842 SystemMemory, as per the ACPI specification. BZ 481
8844 Additional cleanup and optimizations for the new Table Manager code.
8846 AcpiEnable will now fail if all of the required ACPI tables are not
8848 (FADT, FACS, DSDT). BZ 477
8850 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
8852 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
8853 manually optimized to be aligned and will not work if it is byte-packed.
8855 Example Code and Data Size: These are the sizes for the OS-independent
8856 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8857 debug version of the code includes the debug output trace mechanism and
8859 a much larger code and data size.
8862 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8863 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8865 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8866 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8869 2) iASL Compiler/Disassembler and Tools:
8871 Fixed a problem where the presence of the _OSI predefined control method
8872 within complex expressions could cause an internal compiler error.
8874 AcpiExec: Implemented full region support for multiple address spaces.
8875 SpaceId is now part of the REGION object. BZ 429
8877 ----------------------------------------
8878 11 October 2006. Summary of changes for version 20061011:
8880 1) ACPI CA Core Subsystem:
8882 Completed an AML interpreter performance enhancement for control method
8883 execution. Previously a 2-pass parse/execution, control methods are now
8884 completely parsed and executed in a single pass. This improves overall
8885 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8886 use. (Valery Podrezov + interpreter changes in version 20051202 that
8887 eliminated namespace loading during the pass one parse.)
8889 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8891 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8893 obtained and also checked for an ID match.
8895 Implemented additional support for the PCI _ADR execution: upsearch until
8897 device scope is found before executing _ADR. This allows PCI_Config
8898 operation regions to be declared locally within control methods
8902 Fixed a problem with a possible race condition between threads executing
8903 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8904 modifying AcpiWalkNamespace to (by default) ignore all temporary
8906 entries created during any concurrent control method execution. An
8907 additional namespace race condition is known to exist between
8908 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8911 Restructured the AML ParseLoop function, breaking it into several
8912 subfunctions in order to reduce CPU stack use and improve
8916 AcpiGetHandle: Fix for parameter validation to detect invalid
8918 of prefix handle and pathname. BZ 478
8920 Example Code and Data Size: These are the sizes for the OS-independent
8921 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8922 debug version of the code includes the debug output trace mechanism and
8924 a much larger code and data size.
8927 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8928 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8930 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8931 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8933 2) iASL Compiler/Disassembler and Tools:
8935 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8937 to restore original behavior.
8939 ----------------------------------------
8940 27 September 2006. Summary of changes for version 20060927:
8942 1) ACPI CA Core Subsystem:
8944 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8945 These functions now use a spinlock for mutual exclusion and the interrupt
8946 level indication flag is not needed.
8948 Fixed a problem with the Global Lock where the lock could appear to be
8949 obtained before it is actually obtained. The global lock semaphore was
8950 inadvertently created with one unit instead of zero units. (BZ 464)
8954 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8956 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8958 Example Code and Data Size: These are the sizes for the OS-independent
8959 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8960 debug version of the code includes the debug output trace mechanism and
8962 a much larger code and data size.
8965 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8966 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8968 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8969 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8972 2) iASL Compiler/Disassembler and Tools:
8974 Fixed a compilation problem with the pre-defined Resource Descriptor
8976 names where an "object does not exist" error could be incorrectly
8978 if the parent ResourceTemplate pathname places the template within a
8979 different namespace scope than the current scope. (BZ 7212)
8981 Fixed a problem where the compiler could hang after syntax errors
8983 in an ElseIf construct. (BZ 453)
8985 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8986 operator. An incorrect output filename was produced when this parameter
8988 a null string (""). Now, the original input filename is used as the AML
8989 output filename, with an ".aml" extension.
8991 Implemented a generic batch command mode for the AcpiExec utility
8993 any AML debugger command) (Valery Podrezov).
8995 ----------------------------------------
8996 12 September 2006. Summary of changes for version 20060912:
8998 1) ACPI CA Core Subsystem:
9000 Enhanced the implementation of the "serialized mode" of the interpreter
9001 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9002 specified, instead of creating a serialization semaphore per control
9004 the interpreter lock is simply no longer released before a blocking
9005 operation during control method execution. This effectively makes the AML
9006 Interpreter single-threaded. The overhead of a semaphore per-method is
9009 Fixed a regression where an error was no longer emitted if a control
9011 attempts to create 2 objects of the same name. This once again returns
9012 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9014 will dynamically serialize the control method to possible prevent future
9017 Integrated a fix for a problem with PCI Express HID detection in the PCI
9018 Config Space setup procedure. (BZ 7145)
9020 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9021 AcpiHwInitialize function - the FADT registers are now validated when the
9024 Added two new warnings during FADT verification - 1) if the FADT is
9026 than the largest known FADT version, and 2) if there is a mismatch
9029 32-bit block address and the 64-bit X counterpart (when both are non-
9032 Example Code and Data Size: These are the sizes for the OS-independent
9033 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9034 debug version of the code includes the debug output trace mechanism and
9036 a much larger code and data size.
9039 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9040 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9042 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9043 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9046 2) iASL Compiler/Disassembler and Tools:
9048 Fixed a problem with the implementation of the Switch() operator where
9050 temporary variable was declared too close to the actual Switch, instead
9052 at method level. This could cause a problem if the Switch() operator is
9053 within a while loop, causing an error on the second iteration. (BZ 460)
9055 Disassembler - fix for error emitted for unknown type for target of scope
9056 operator. Now, ignore it and continue.
9058 Disassembly of an FADT now verifies the input FADT and reports any errors
9059 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9061 Disassembly of raw data buffers with byte initialization data now
9063 each output line with the current buffer offset.
9065 Disassembly of ASF! table now includes all variable-length data fields at
9066 the end of some of the subtables.
9068 The disassembler now emits a comment if a buffer appears to be a
9069 ResourceTemplate, but cannot be disassembled as such because the EndTag
9071 not appear at the very end of the buffer.
9073 AcpiExec - Added the "-t" command line option to enable the serialized
9075 of the AML interpreter.
9077 ----------------------------------------
9078 31 August 2006. Summary of changes for version 20060831:
9080 1) ACPI CA Core Subsystem:
9082 Miscellaneous fixes for the Table Manager:
9083 - Correctly initialize internal common FADT for all 64-bit "X" fields
9084 - Fixed a couple table mapping issues during table load
9085 - Fixed a couple alignment issues for IA64
9086 - Initialize input array to zero in AcpiInitializeTables
9087 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9090 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9092 immediately disabled to prevent the waking GPE from firing again and to
9093 prevent other wake GPEs from interrupting the wake process.
9095 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9097 be used for debugging systems with a large number of ACPI interrupts.
9099 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9100 both the ACPICA headers and the disassembler.
9102 Example Code and Data Size: These are the sizes for the OS-independent
9103 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9104 debug version of the code includes the debug output trace mechanism and
9106 a much larger code and data size.
9109 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9110 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9112 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9113 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9116 2) iASL Compiler/Disassembler and Tools:
9118 Disassembler support for the DMAR ACPI table.
9120 ----------------------------------------
9121 23 August 2006. Summary of changes for version 20060823:
9123 1) ACPI CA Core Subsystem:
9125 The Table Manager component has been completely redesigned and
9126 reimplemented. The new design is much simpler, and reduces the overall
9128 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9130 now possible to obtain the ACPI tables very early during kernel
9131 initialization, even before dynamic memory management is initialized.
9132 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9134 Obsolete ACPICA interfaces:
9136 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9139 - AcpiLoadTable: Not needed.
9140 - AcpiUnloadTable: Not needed.
9142 New ACPICA interfaces:
9144 - AcpiInitializeTables: Must be called before the table manager can be
9146 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9147 allocated memory after it becomes available.
9148 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9152 Other ACPICA changes:
9154 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9156 AcpiOsUnmapMemory to free this mapping.
9157 - AcpiGetTable returns the actual mapped table. The mapping is managed
9158 internally and must not be deleted by the caller. Use of this interface
9159 causes no additional dynamic memory allocation.
9160 - AcpiFindRootPointer: Support for physical addressing has been
9162 it appeared to be unused.
9163 - The interface to AcpiOsMapMemory has changed to be consistent with the
9164 other allocation interfaces.
9165 - The interface to AcpiOsGetRootPointer has changed to eliminate
9168 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9170 bit platforms. Was previously 64 bits on all platforms.
9171 - The interface to the ACPI Global Lock acquire/release macros have
9173 slightly since ACPICA no longer keeps a local copy of the FACS with a
9174 constructed pointer to the actual global lock.
9176 Porting to the new table manager:
9178 - AcpiInitializeTables: Must be called once, and can be called anytime
9179 during the OS initialization process. It allows the host to specify an
9181 of memory to be used to store the internal version of the RSDT/XSDT (root
9182 table). This allows the host to access ACPI tables before memory
9184 is initialized and running.
9185 - AcpiReallocateRootTable: Can be called after memory management is
9187 to copy the root table to a dynamically allocated array, freeing up the
9188 scratch memory specified in the call to AcpiInitializeTables.
9189 - AcpiSubsystemInitialize: This existing interface is independent of the
9190 Table Manager, and does not have to be called before the Table Manager
9192 be used, it only must be called before the rest of ACPICA can be used.
9193 - ACPI Tables: Some changes have been made to the names and structure of
9195 actbl.h and actbl1.h header files and may require changes to existing
9197 For example, bitfields have been completely removed because of their lack
9199 portability across C compilers.
9200 - Update interfaces to the Global Lock acquire/release macros if local
9201 versions are used. (see acwin.h)
9203 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9207 Example Code and Data Size: These are the sizes for the OS-independent
9208 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9209 debug version of the code includes the debug output trace mechanism and
9211 a much larger code and data size.
9214 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9215 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9217 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9218 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9221 2) iASL Compiler/Disassembler and Tools:
9223 No changes for this release.
9225 ----------------------------------------
9226 21 July 2006. Summary of changes for version 20060721:
9228 1) ACPI CA Core Subsystem:
9230 The full source code for the ASL test suite used to validate the iASL
9231 compiler and the ACPICA core subsystem is being released with the ACPICA
9232 source for the first time. The source is contained in a separate package
9234 consists of over 1100 files that exercise all ASL/AML operators. The
9236 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9240 Completed a new design and implementation for support of the ACPI Global
9241 Lock. On the OS side, the global lock is now treated as a standard AML
9242 mutex. Previously, multiple OS threads could "acquire" the global lock
9243 simultaneously. However, this could cause the BIOS to be starved out of
9245 lock - especially in cases such as the Embedded Controller driver where
9246 there is a tight coupling between the OS and the BIOS.
9248 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9249 The Global Lock interrupt handler no longer queues the execution of a
9250 separate thread to signal the global lock semaphore. Instead, the
9252 is signaled directly from the interrupt handler.
9254 Implemented support within the AML interpreter for package objects that
9255 contain a larger AML length (package list length) than the package
9257 count. In this case, the length of the package is truncated to match the
9258 package element count. Some BIOS code apparently modifies the package
9260 on the fly, and this change supports this behavior. Provides
9262 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9264 Implemented a temporary fix for the BankValue parameter of a Bank Field
9266 support all constant values, now including the Zero and One opcodes.
9267 Evaluation of this parameter must eventually be converted to a full
9269 evaluation. A not-implemented error is now returned (temporarily) for
9271 constant values for this parameter.
9273 Fixed problem reports (Fiodor Suietov) integrated:
9274 - Fix for premature object deletion after CopyObject on Operation Region
9278 Example Code and Data Size: These are the sizes for the OS-independent
9279 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9280 debug version of the code includes the debug output trace mechanism and
9282 a much larger code and data size.
9285 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9286 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9288 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9289 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9292 2) iASL Compiler/Disassembler and Tools:
9294 No changes for this release.
9296 ----------------------------------------
9297 07 July 2006. Summary of changes for version 20060707:
9299 1) ACPI CA Core Subsystem:
9301 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9302 that do not allow the initialization of address pointers within packed
9303 structures - even though the hardware itself may support misaligned
9304 transfers. Some of the debug data structures are packed by default to
9307 Added an error message for the case where AcpiOsGetThreadId() returns
9309 A non-zero value is required by the core ACPICA code to ensure the proper
9310 operation of AML mutexes and recursive control methods.
9312 The DSDT is now the only ACPI table that determines whether the AML
9313 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9315 the hooks for per-table 32/64 switching have been removed from the code.
9317 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9319 Fixed a possible leak of an OwnerID in the error path of
9320 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9321 deletion to a single place in AcpiTbUninstallTable to correct possible
9323 when using the AcpiTbDeleteTablesByType interface (with assistance from
9326 Fixed a problem with Serialized control methods where the semaphore
9327 associated with the method could be over-signaled after multiple method
9330 Fixed two issues with the locking of the internal namespace data
9332 Both the Unload() operator and AcpiUnloadTable interface now lock the
9333 namespace during the namespace deletion associated with the table unload
9334 (with assistance from Linn Crosetto.)
9336 Fixed problem reports (Valery Podrezov) integrated:
9337 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9339 Fixed problem reports (Fiodor Suietov) integrated:
9340 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9341 - On Address Space handler deletion, needless deactivation call (BZ 374)
9342 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9344 - Possible memory leak, Notify sub-objects of Processor, Power,
9347 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9348 - Minimum Length of RSDT should be validated (BZ 379)
9349 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9351 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9355 Example Code and Data Size: These are the sizes for the OS-independent
9356 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9357 debug version of the code includes the debug output trace mechanism and
9359 a much larger code and data size.
9362 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9363 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9365 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9366 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9369 2) iASL Compiler/Disassembler and Tools:
9371 Fixed problem reports:
9372 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9375 ----------------------------------------
9376 23 June 2006. Summary of changes for version 20060623:
9378 1) ACPI CA Core Subsystem:
9380 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9381 allows the type to be customized to the host OS for improved efficiency
9382 (since a spinlock is usually a very small object.)
9384 Implemented support for "ignored" bits in the ACPI registers. According
9386 the ACPI specification, these bits should be preserved when writing the
9387 registers via a read/modify/write cycle. There are 3 bits preserved in
9389 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9391 Implemented the initial deployment of new OSL mutex interfaces. Since
9393 host operating systems have separate mutex and semaphore objects, this
9394 feature was requested. The base code now uses mutexes (and the new mutex
9395 interfaces) wherever a binary semaphore was used previously. However, for
9396 the current release, the mutex interfaces are defined as macros to map
9398 to the existing semaphore interfaces. Therefore, no OSL changes are
9400 at this time. (See acpiosxf.h)
9402 Fixed several problems with the support for the control method SyncLevel
9403 parameter. The SyncLevel now works according to the ACPI specification
9405 in concert with the Mutex SyncLevel parameter, since the current
9407 is a property of the executing thread. Mutual exclusion for control
9409 is now implemented with a mutex instead of a semaphore.
9411 Fixed three instances of the use of the C shift operator in the bitfield
9412 support code (exfldio.c) to avoid the use of a shift value larger than
9414 target data width. The behavior of C compilers is undefined in this case
9416 can cause unpredictable results, and therefore the case must be detected
9418 avoided. (Fiodor Suietov)
9420 Added an info message whenever an SSDT or OEM table is loaded dynamically
9421 via the Load() or LoadTable() ASL operators. This should improve
9423 capability since it will show exactly what tables have been loaded
9425 the tables present in the RSDT/XSDT.)
9427 Example Code and Data Size: These are the sizes for the OS-independent
9428 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9429 debug version of the code includes the debug output trace mechanism and
9431 a much larger code and data size.
9434 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9435 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9437 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9438 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9441 2) iASL Compiler/Disassembler and Tools:
9443 No changes for this release.
9445 ----------------------------------------
9446 08 June 2006. Summary of changes for version 20060608:
9448 1) ACPI CA Core Subsystem:
9450 Converted the locking mutex used for the ACPI hardware to a spinlock.
9452 change should eliminate all problems caused by attempting to acquire a
9453 semaphore at interrupt level, and it means that all ACPICA external
9454 interfaces that directly access the ACPI hardware can be safely called
9456 interrupt level. OSL code that implements the semaphore interfaces should
9458 able to eliminate any workarounds for being called at interrupt level.
9460 Fixed a regression introduced in 20060526 where the ACPI device
9461 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9463 did not have an optional _INI method.
9465 Fixed an IndexField issue where a write to the Data Register should be
9466 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9470 Fixed problem reports (Valery Podrezov) integrated:
9471 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9473 Fixed problem reports (Fiodor Suietov) integrated:
9474 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9476 Removed four global mutexes that were obsolete and were no longer being
9479 Example Code and Data Size: These are the sizes for the OS-independent
9480 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9481 debug version of the code includes the debug output trace mechanism and
9483 a much larger code and data size.
9486 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9487 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9489 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9490 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9493 2) iASL Compiler/Disassembler and Tools:
9495 Fixed a fault when using -g option (get tables from registry) on Windows
9498 Fixed problem reports integrated:
9499 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9500 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9502 - Global table revision override (-r) is ignored (BZ 413)
9504 ----------------------------------------
9505 26 May 2006. Summary of changes for version 20060526:
9507 1) ACPI CA Core Subsystem:
9509 Restructured, flattened, and simplified the internal interfaces for
9510 namespace object evaluation - resulting in smaller code, less CPU stack
9512 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9514 Fixed a problem with the CopyObject operator where the first parameter
9516 not typed correctly for the parser, interpreter, compiler, and
9518 Caused various errors and unexpected behavior.
9520 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9521 produced incorrect results with some C compilers. Since the behavior of C
9522 compilers when the shift value is larger than the datatype width is
9523 apparently not well defined, the interpreter now detects this condition
9525 simply returns zero as expected in all such cases. (BZ 395)
9527 Fixed problem reports (Valery Podrezov) integrated:
9528 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9529 - Allow interpreter to handle nested method declarations (BZ 5361)
9531 Fixed problem reports (Fiodor Suietov) integrated:
9532 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9534 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9536 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9537 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9538 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9539 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9540 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9541 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9542 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9544 - Status of the Global Initialization Handler call not used (BZ 366)
9545 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9547 Example Code and Data Size: These are the sizes for the OS-independent
9548 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9549 debug version of the code includes the debug output trace mechanism and
9551 a much larger code and data size.
9554 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9555 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9557 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9558 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9561 2) iASL Compiler/Disassembler and Tools:
9563 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9564 namespace identifiers with no collision with existing resource descriptor
9565 macro names. This provides compatibility with other ASL compilers and is
9566 most useful for disassembly/recompilation of existing tables without
9568 errors. (With assistance from Thomas Renninger)
9570 Disassembler: fixed an incorrect disassembly problem with the
9571 DataTableRegion and CopyObject operators. Fixed a possible fault during
9572 disassembly of some Alias operators.
9574 ----------------------------------------
9575 12 May 2006. Summary of changes for version 20060512:
9577 1) ACPI CA Core Subsystem:
9579 Replaced the AcpiOsQueueForExecution interface with a new interface named
9580 AcpiOsExecute. The major difference is that the new interface does not
9582 a Priority parameter, this appeared to be useless and has been replaced
9585 Type parameter. The Type tells the host what type of execution is being
9586 requested, such as global lock handler, notify handler, GPE handler, etc.
9587 This allows the host to queue and execute the request as appropriate for
9589 request type, possibly using different work queues and different
9591 for the various request types. This enables fixes for multithreading
9592 deadlock problems such as BZ #5534, and will require changes to all
9594 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9596 Fixed a possible memory leak associated with the support for the so-
9598 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9601 Fixed a problem with the Load() operator where a table load from an
9602 operation region could overwrite an internal table buffer by up to 7
9604 and cause alignment faults on IPF systems. (With assistance from Luming
9607 Example Code and Data Size: These are the sizes for the OS-independent
9608 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9609 debug version of the code includes the debug output trace mechanism and
9611 a much larger code and data size.
9614 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9615 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9617 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9618 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9622 2) iASL Compiler/Disassembler and Tools:
9624 Disassembler: Implemented support to cross reference the internal
9626 and automatically generate ASL External() statements for symbols not
9628 within the current table being disassembled. This will simplify the
9629 disassembly and recompilation of interdependent tables such as SSDTs
9631 these statements will no longer have to be added manually.
9633 Disassembler: Implemented experimental support to automatically detect
9634 invocations of external control methods and generate appropriate
9636 statements. This is problematic because the AML cannot be correctly
9638 until the number of arguments for each control method is known.
9640 standalone method invocations and invocations as the source operand of a
9641 Store() statement are supported.
9643 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
9644 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
9645 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
9646 more readable and likely closer to the original ASL source.
9648 ----------------------------------------
9649 21 April 2006. Summary of changes for version 20060421:
9651 1) ACPI CA Core Subsystem:
9653 Removed a device initialization optimization introduced in 20051216 where
9654 the _STA method was not run unless an _INI was also present for the same
9655 device. This optimization could cause problems because it could allow
9657 methods to be run within a not-present device subtree. (If a not-present
9658 device had no _INI, _STA would not be run, the not-present status would
9660 be discovered, and the children of the device would be incorrectly
9663 Implemented a new _STA optimization where namespace subtrees that do not
9664 contain _INI are identified and ignored during device initialization.
9665 Selectively running _STA can significantly improve boot time on large
9666 machines (with assistance from Len Brown.)
9668 Implemented support for the device initialization case where the returned
9669 _STA flags indicate a device not-present but functioning. In this case,
9671 is not run, but the device children are examined for presence, as per the
9674 Implemented an additional change to the IndexField support in order to
9675 conform to MS behavior. The value written to the Index Register is not
9676 simply a byte offset, it is a byte offset in units of the access width of
9677 the parent Index Field. (Fiodor Suietov)
9679 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
9680 interface is called during the creation of all AML operation regions, and
9681 allows the host OS to exert control over what addresses it will allow the
9682 AML code to access. Operation Regions whose addresses are disallowed will
9683 cause a runtime exception when they are actually accessed (will not
9685 or abort table loading.) See oswinxf or osunixxf for an example
9688 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
9689 interface allows the host OS to match the various "optional"
9690 interface/behavior strings for the _OSI predefined control method as
9691 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
9692 for an example implementation.
9694 Restructured and corrected various problems in the exception handling
9696 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
9697 (with assistance from Takayoshi Kochi.)
9699 Modified the Linux source converter to ignore quoted string literals
9701 converting identifiers from mixed to lower case. This will correct
9703 with the disassembler and other areas where such strings must not be
9706 The ACPI_FUNCTION_* macros no longer require quotes around the function
9707 name. This allows the Linux source converter to convert the names, now
9709 the converter ignores quoted strings.
9711 Example Code and Data Size: These are the sizes for the OS-independent
9712 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9713 debug version of the code includes the debug output trace mechanism and
9715 a much larger code and data size.
9719 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9720 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9722 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9723 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9726 2) iASL Compiler/Disassembler and Tools:
9728 Implemented 3 new warnings for iASL, and implemented multiple warning
9732 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9734 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9735 check for the possible timeout, a warning is issued.
9737 2) Useless operators: If an ASL operator does not specify an optional
9739 operand and it also does not use the function return value from the
9740 operator, a warning is issued since the operator effectively does
9743 3) Unreferenced objects: If a namespace object is created, but never
9744 referenced, a warning is issued. This is a warning level 2 since there
9746 cases where this is ok, such as when a secondary table is loaded that
9748 the unreferenced objects. Even so, care is taken to only flag objects
9750 don't look like they will ever be used. For example, the reserved methods
9751 (starting with an underscore) are usually not referenced because it is
9752 expected that the OS will invoke them.
9754 ----------------------------------------
9755 31 March 2006. Summary of changes for version 20060331:
9757 1) ACPI CA Core Subsystem:
9759 Implemented header file support for the following additional ACPI tables:
9760 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9762 all current and known ACPI tables are now defined in the ACPICA headers
9764 are available for use by device drivers and other software.
9766 Implemented support to allow tables that contain ACPI names with invalid
9767 characters to be loaded. Previously, this would cause the table load to
9768 fail, but since there are several known cases of such tables on existing
9769 machines, this change was made to enable ACPI support for them. Also,
9771 matches the behavior of the Microsoft ACPI implementation.
9773 Fixed a couple regressions introduced during the memory optimization in
9775 20060317 release. The namespace node definition required additional
9776 reorganization and an internal datatype that had been changed to 8-bit
9778 restored to 32-bit. (Valery Podrezov)
9780 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9781 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9782 null pointers are now trapped and ignored, matching the behavior of the
9783 previous implementation before the deployment of AcpiOsReleaseObject.
9784 (Valery Podrezov, Fiodor Suietov)
9786 Fixed a memory mapping leak during the deletion of a SystemMemory
9788 region where a cached memory mapping was not deleted. This became a
9789 noticeable problem for operation regions that are defined within
9791 used control methods. (Dana Meyers)
9793 Reorganized the ACPI table header files into two main files: one for the
9794 ACPI tables consumed by the ACPICA core, and another for the
9796 ACPI tables that are consumed by the drivers and other software. The
9798 FADT definitions were merged into one common section and three different
9799 tables (ACPI 1.0, 1.0+, and 2.0)
9801 Example Code and Data Size: These are the sizes for the OS-independent
9802 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9803 debug version of the code includes the debug output trace mechanism and
9805 a much larger code and data size.
9808 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9809 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9811 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9812 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9815 2) iASL Compiler/Disassembler and Tools:
9817 Disassembler: Implemented support to decode and format all non-AML ACPI
9818 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9819 added to the ACPICA headers, therefore all current and known ACPI tables
9823 Disassembler: The change to allow ACPI names with invalid characters also
9824 enables the disassembly of such tables. Invalid characters within names
9826 changed to '*' to make the name printable; the iASL compiler will still
9827 generate an error for such names, however, since this is an invalid ACPI
9830 Implemented an option for AcpiXtract (-a) to extract all tables found in
9832 input file. The default invocation extracts only the DSDTs and SSDTs.
9834 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9835 makefile for the AcpiXtract utility.
9837 ----------------------------------------
9838 17 March 2006. Summary of changes for version 20060317:
9840 1) ACPI CA Core Subsystem:
9842 Implemented the use of a cache object for all internal namespace nodes.
9843 Since there are about 1000 static nodes in a typical system, this will
9844 decrease memory use for cache implementations that minimize per-
9846 overhead (such as a slab allocator.)
9848 Removed the reference count mechanism for internal namespace nodes, since
9850 was deemed unnecessary. This reduces the size of each namespace node by
9851 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
9853 and 32 bytes for the 64-bit case.
9855 Optimized several internal data structures to reduce object size on 64-
9857 platforms by packing data within the 64-bit alignment. This includes the
9858 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
9859 instances corresponding to the namespace objects.
9861 Added two new strings for the predefined _OSI method: "Windows 2001.1
9865 Split the allocation tracking mechanism out to a separate file, from
9866 utalloc.c to uttrack.c. This mechanism appears to be only useful for
9867 application-level code. Kernels may wish to not include uttrack.c in
9870 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
9872 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
9875 Code and Data Size: These are the sizes for the acpica.lib produced by
9877 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9879 driver or OSPM code. The debug version of the code includes the debug
9881 trace mechanism and has a much larger code and data size. Note that these
9882 values will vary depending on the efficiency of the compiler and the
9883 compiler options used during generation.
9886 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9887 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9889 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9890 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9893 2) iASL Compiler/Disassembler and Tools:
9895 Implemented an ANSI C version of the acpixtract utility. This version
9897 automatically extract the DSDT and all SSDTs from the input acpidump text
9898 file and dump the binary output to separate files. It can also display a
9899 summary of the input file including the headers for each table found and
9900 will extract any single ACPI table, with any signature. (See
9901 source/tools/acpixtract)
9903 ----------------------------------------
9904 10 March 2006. Summary of changes for version 20060310:
9906 1) ACPI CA Core Subsystem:
9908 Tagged all external interfaces to the subsystem with the new
9909 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9911 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9912 macro. The default definition is NULL.
9914 Added the ACPI_THREAD_ID type for the return value from
9916 This allows the host to define this as necessary to simplify kernel
9917 integration. The default definition is ACPI_NATIVE_UINT.
9919 Fixed two interpreter problems related to error processing, the deletion
9921 objects, and placing invalid pointers onto the internal operator result
9922 stack. BZ 6028, 6151 (Valery Podrezov)
9924 Increased the reference count threshold where a warning is emitted for
9926 reference counts in order to eliminate unnecessary warnings on systems
9928 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9931 Due to universal disagreement as to the meaning of the 'c' in the
9933 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9934 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9935 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9938 Code and Data Size: These are the sizes for the acpica.lib produced by
9940 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9942 driver or OSPM code. The debug version of the code includes the debug
9944 trace mechanism and has a much larger code and data size. Note that these
9945 values will vary depending on the efficiency of the compiler and the
9946 compiler options used during generation.
9949 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9950 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9952 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9953 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9956 2) iASL Compiler/Disassembler:
9958 Disassembler: implemented support for symbolic resource descriptor
9959 references. If a CreateXxxxField operator references a fixed offset
9962 resource descriptor, a name is assigned to the descriptor and the offset
9964 translated to the appropriate resource tag and pathname. The addition of
9965 this support brings the disassembled code very close to the original ASL
9966 source code and helps eliminate run-time errors when the disassembled
9968 is modified (and recompiled) in such a way as to invalidate the original
9971 Implemented support for a Descriptor Name as the last parameter to the
9973 Register() macro. This parameter was inadvertently left out of the ACPI
9974 specification, and will be added for ACPI 3.0b.
9976 Fixed a problem where the use of the "_OSI" string (versus the full path
9977 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9979 Fixed a problem with the error message that occurs when an invalid string
9981 used for a _HID object (such as one with an embedded asterisk:
9983 The correct message is now displayed.
9985 ----------------------------------------
9986 17 February 2006. Summary of changes for version 20060217:
9988 1) ACPI CA Core Subsystem:
9990 Implemented a change to the IndexField support to match the behavior of
9992 Microsoft AML interpreter. The value written to the Index register is now
9994 byte offset, no longer an index based upon the width of the Data
9996 This should fix IndexField problems seen on some machines where the Data
9997 register is not exactly one byte wide. The ACPI specification will be
9998 clarified on this point.
10000 Fixed a problem where several resource descriptor types could overrun the
10001 internal descriptor buffer due to size miscalculation: VendorShort,
10002 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10003 affect all platforms.
10005 Fixed a problem where individual resource descriptors were misaligned
10007 the internal buffer, causing alignment faults on IA64 platforms.
10009 Code and Data Size: These are the sizes for the acpica.lib produced by
10011 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10013 driver or OSPM code. The debug version of the code includes the debug
10015 trace mechanism and has a much larger code and data size. Note that these
10016 values will vary depending on the efficiency of the compiler and the
10017 compiler options used during generation.
10020 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10021 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10023 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10024 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10027 2) iASL Compiler/Disassembler:
10029 Implemented support for new reserved names: _WDG and _WED are Microsoft
10030 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10031 defined method (Throttling Depth Limit.)
10033 Fixed a problem where a zero-length VendorShort or VendorLong resource
10034 descriptor was incorrectly emitted as a descriptor of length one.
10036 ----------------------------------------
10037 10 February 2006. Summary of changes for version 20060210:
10039 1) ACPI CA Core Subsystem:
10041 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10042 normal execution. These became apparent after the conversion from
10045 Fixed a problem where the CreateField operator could hang if the BitIndex
10047 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10049 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10050 failed with an exception. This also fixes a couple of related RefOf and
10051 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10053 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10055 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10059 Implemented a memory cleanup at the end of the execution of each
10061 of an AML While() loop, preventing the accumulation of outstanding
10063 (Valery Podrezov, BZ 5427)
10065 Eliminated a chunk of duplicate code in the object resolution code.
10069 Fixed several warnings during the 64-bit code generation.
10071 The AcpiSrc source code conversion tool now inserts one line of
10073 after an if() statement that is followed immediately by a comment,
10075 readability of the Linux code.
10077 Code and Data Size: The current and previous library sizes for the core
10078 subsystem are shown below. These are the code and data sizes for the
10079 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10081 values do not include any ACPI driver or OSPM code. The debug version of
10083 code includes the debug output trace mechanism and has a much larger code
10084 and data size. Note that these values will vary depending on the
10086 of the compiler and the compiler options used during generation.
10089 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10090 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10092 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10093 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10096 2) iASL Compiler/Disassembler:
10098 Fixed a problem with the disassembly of a BankField operator with a
10100 expression for the BankValue parameter.
10102 ----------------------------------------
10103 27 January 2006. Summary of changes for version 20060127:
10105 1) ACPI CA Core Subsystem:
10107 Implemented support in the Resource Manager to allow unresolved
10109 references within resource package objects for the _PRT method. This
10111 is in addition to the previously implemented unresolved reference support
10112 within the AML parser. If the interpreter slack mode is enabled, these
10113 unresolved references will be passed through to the caller as a NULL
10117 Implemented and deployed new macros and functions for error and warning
10118 messages across the subsystem. These macros are simpler and generate less
10119 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10120 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10121 macros remain defined to allow ACPI drivers time to migrate to the new
10124 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10126 Acquire/Release Lock OSL interfaces.
10128 Fixed a problem where Alias ASL operators are sometimes not correctly
10129 resolved, in both the interpreter and the iASL compiler.
10131 Fixed several problems with the implementation of the
10132 ConcatenateResTemplate
10133 ASL operator. As per the ACPI specification, zero length buffers are now
10134 treated as a single EndTag. One-length buffers always cause a fatal
10135 exception. Non-zero length buffers that do not end with a full 2-byte
10137 cause a fatal exception.
10139 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10140 interface. (With assistance from Thomas Renninger)
10142 Code and Data Size: The current and previous library sizes for the core
10143 subsystem are shown below. These are the code and data sizes for the
10144 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10146 values do not include any ACPI driver or OSPM code. The debug version of
10148 code includes the debug output trace mechanism and has a much larger code
10149 and data size. Note that these values will vary depending on the
10151 of the compiler and the compiler options used during generation.
10154 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10155 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10157 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10158 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10161 2) iASL Compiler/Disassembler:
10163 Fixed an internal error that was generated for any forward references to
10167 ----------------------------------------
10168 13 January 2006. Summary of changes for version 20060113:
10170 1) ACPI CA Core Subsystem:
10172 Added 2006 copyright to all module headers and signons. This affects
10173 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10176 Enhanced the ACPICA error reporting in order to simplify user migration
10178 the non-debug version of ACPICA. Replaced all instances of the
10179 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10181 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10182 respectively. This preserves all error and warning messages in the non-
10184 version of the ACPICA code (this has been referred to as the "debug lite"
10185 option.) Over 200 cases were converted to create a total of over 380
10186 error/warning messages across the ACPICA code. This increases the code
10188 data size of the default non-debug version of the code somewhat (about
10190 but all error/warning reporting may be disabled if desired (and code
10191 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10192 configuration option. The size of the debug version of ACPICA remains
10196 Fixed a memory leak within the AML Debugger "Set" command. One object was
10197 not properly deleted for every successful invocation of the command.
10199 Code and Data Size: The current and previous library sizes for the core
10200 subsystem are shown below. These are the code and data sizes for the
10201 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10203 values do not include any ACPI driver or OSPM code. The debug version of
10205 code includes the debug output trace mechanism and has a much larger code
10206 and data size. Note that these values will vary depending on the
10208 of the compiler and the compiler options used during generation.
10211 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10212 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10214 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10215 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10218 2) iASL Compiler/Disassembler:
10220 The compiler now officially supports the ACPI 3.0a specification that was
10221 released on December 30, 2005. (Specification is available at
10224 ----------------------------------------
10225 16 December 2005. Summary of changes for version 20051216:
10227 1) ACPI CA Core Subsystem:
10229 Implemented optional support to allow unresolved names within ASL Package
10230 objects. A null object is inserted in the package when a named reference
10231 cannot be located in the current namespace. Enabled via the interpreter
10232 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10234 that contain such code.
10236 Implemented an optimization to the initialization sequence that can
10238 boot time. During ACPI device initialization, the _STA method is now run
10240 and only if the _INI method exists. The _STA method is used to determine
10242 the device is present; An _INI can only be run if _STA returns present,
10244 it is a waste of time to run the _STA method if the _INI does not exist.
10245 (Prototype and assistance from Dong Wei)
10247 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10249 available in the current compiler. Otherwise, the default (void *) cast
10253 Fixed some possible memory leaks found within the execution path of the
10254 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10256 Fixed a problem introduced in the 20051202 release where an exception is
10257 generated during method execution if a control method attempts to declare
10260 Moved resource descriptor string constants that are used by both the AML
10261 disassembler and AML debugger to the common utilities directory so that
10262 these components are independent.
10264 Implemented support in the AcpiExec utility (-e switch) to globally
10266 exceptions during control method execution (method is not aborted.)
10268 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10271 Code and Data Size: The current and previous library sizes for the core
10272 subsystem are shown below. These are the code and data sizes for the
10273 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10275 values do not include any ACPI driver or OSPM code. The debug version of
10277 code includes the debug output trace mechanism and has a much larger code
10278 and data size. Note that these values will vary depending on the
10280 of the compiler and the compiler options used during generation.
10283 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10284 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10286 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10287 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10290 2) iASL Compiler/Disassembler:
10292 Fixed a problem where a CPU stack overflow fault could occur if a
10294 method call was made from within a Return statement.
10296 ----------------------------------------
10297 02 December 2005. Summary of changes for version 20051202:
10299 1) ACPI CA Core Subsystem:
10301 Modified the parsing of control methods to no longer create namespace
10302 objects during the first pass of the parse. Objects are now created only
10303 during the execute phase, at the moment the namespace creation operator
10305 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10307 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10308 reentrant control methods are protected by an AML mutex. The mutex will
10310 correctly block multiple threads from attempting to create the same
10314 Increased the number of available Owner Ids for namespace object tracking
10315 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10317 some machines with a large number of ACPI tables (either static or
10320 Fixed a problem with the AcpiExec utility where a fault could occur when
10322 -b switch (batch mode) is used.
10324 Enhanced the namespace dump routine to output the owner ID for each
10327 Code and Data Size: The current and previous library sizes for the core
10328 subsystem are shown below. These are the code and data sizes for the
10329 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10331 values do not include any ACPI driver or OSPM code. The debug version of
10333 code includes the debug output trace mechanism and has a much larger code
10334 and data size. Note that these values will vary depending on the
10336 of the compiler and the compiler options used during generation.
10339 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10340 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10342 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10343 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10346 2) iASL Compiler/Disassembler:
10348 Fixed a parse error during compilation of certain Switch/Case constructs.
10350 simplify the parse, the grammar now allows for multiple Default
10352 and this error is now detected and flagged during the analysis phase.
10354 Disassembler: The disassembly now includes the contents of the original
10355 table header within a comment at the start of the file. This includes the
10356 name and version of the original ASL compiler.
10358 ----------------------------------------
10359 17 November 2005. Summary of changes for version 20051117:
10361 1) ACPI CA Core Subsystem:
10363 Fixed a problem in the AML parser where the method thread count could be
10364 decremented below zero if any errors occurred during the method parse
10366 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10368 This also fixed a related regression with the mechanism that detects and
10369 corrects methods that cannot properly handle reentrancy (related to the
10370 deployment of the new OwnerId mechanism.)
10372 Eliminated the pre-parsing of control methods (to detect errors) during
10373 table load. Related to the problem above, this was causing unwind issues
10375 any errors occurred during the parse, and it seemed to be overkill. A
10377 load should not be aborted if there are problems with any single control
10378 method, thus rendering this feature rather pointless.
10380 Fixed a problem with the new table-driven resource manager where an
10382 buffer overflow could occur for small resource templates.
10384 Implemented a new external interface, AcpiGetVendorResource. This
10386 will find and return a vendor-defined resource descriptor within a _CRS
10388 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10391 Removed the length limit (200) on string objects as per the upcoming ACPI
10392 3.0A specification. This affects the following areas of the interpreter:
10394 any implicit conversion of a Buffer to a String, 2) a String object
10396 of the ASL Concatentate operator, 3) the String object result of the ASL
10399 Fixed a problem in the Windows OS interface layer (OSL) where a
10401 on a semaphore object would incorrectly timeout. This allows the
10402 multithreading features of the AcpiExec utility to work properly under
10405 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10406 the recently added file named "utresrc.c".
10408 Code and Data Size: The current and previous library sizes for the core
10409 subsystem are shown below. These are the code and data sizes for the
10410 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10412 values do not include any ACPI driver or OSPM code. The debug version of
10414 code includes the debug output trace mechanism and has a much larger code
10415 and data size. Note that these values will vary depending on the
10417 of the compiler and the compiler options used during generation.
10420 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10421 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10423 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10424 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10427 2) iASL Compiler/Disassembler:
10429 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10430 specification. For the iASL compiler, this means that string literals
10432 the source ASL can be of any length.
10434 Enhanced the listing output to dump the AML code for resource descriptors
10435 immediately after the ASL code for each descriptor, instead of in a block
10437 the end of the entire resource template.
10439 Enhanced the compiler debug output to dump the entire original parse tree
10440 constructed during the parse phase, before any transforms are applied to
10442 tree. The transformed tree is dumped also.
10444 ----------------------------------------
10445 02 November 2005. Summary of changes for version 20051102:
10447 1) ACPI CA Core Subsystem:
10449 Modified the subsystem initialization sequence to improve GPE support.
10451 GPE initialization has been split into two parts in order to defer
10453 of the _PRW methods (Power Resources for Wake) until after the hardware
10455 fully initialized and the SCI handler is installed. This allows the _PRW
10456 methods to access fields protected by the Global Lock. This will fix
10458 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10460 Converted the ACPI internal object disassemble and display code within
10462 AML debugger to fully table-driven operation, reducing code size and
10463 increasing maintainability.
10465 Fixed a regression with the ConcatenateResTemplate() ASL operator
10467 in the 20051021 release.
10469 Implemented support for "local" internal ACPI object types within the
10470 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10471 These local types include RegionFields, BankFields, IndexFields, Alias,
10475 Moved common AML resource handling code into a new file, "utresrc.c".
10477 code is shared by both the Resource Manager and the AML Debugger.
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: 76.1K Code, 12.2K Data, 88.3K Total
10492 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10494 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10495 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10498 2) iASL Compiler/Disassembler:
10500 Fixed a problem with very large initializer lists (more than 4000
10502 for both Buffer and Package objects where the parse stack could overflow.
10504 Enhanced the pre-compile source code scan for non-ASCII characters to
10506 characters within comment fields. The scan is now always performed and is
10508 longer optional, detecting invalid characters within a source file
10509 immediately rather than during the parse phase or later.
10511 Enhanced the ASL grammar definition to force early reductions on all
10513 style grammar elements so that the overall parse stack usage is greatly
10514 reduced. This should improve performance and reduce the possibility of
10518 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10520 with the addition of a %expected statement, the compiler generates from
10521 source with no warnings.
10523 Fixed a possible segment fault in the disassembler if the input filename
10524 does not contain a "dot" extension (Thomas Renninger).
10526 ----------------------------------------
10527 21 October 2005. Summary of changes for version 20051021:
10529 1) ACPI CA Core Subsystem:
10531 Implemented support for the EM64T and other x86-64 processors. This
10532 essentially entails recognizing that these processors support non-aligned
10533 memory transfers. Previously, all 64-bit processors were assumed to lack
10534 hardware support for non-aligned transfers.
10536 Completed conversion of the Resource Manager to nearly full table-driven
10537 operation. Specifically, the resource conversion code (convert AML to
10538 internal format and the reverse) and the debug code to dump internal
10539 resource descriptors are fully table-driven, reducing code and data size
10541 improving maintainability.
10543 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10545 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10547 Alexey Starikovskiy)
10549 Implemented support within the resource conversion code for the Type-
10550 Specific byte within the various ACPI 3.0 *WordSpace macros.
10552 Fixed some issues within the resource conversion code for the type-
10554 flags for both Memory and I/O address resource descriptors. For Memory,
10555 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10556 TTP flags into two separate fields.
10558 Code and Data Size: The current and previous library sizes for the core
10559 subsystem are shown below. These are the code and data sizes for the
10560 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10562 values do not include any ACPI driver or OSPM code. The debug version of
10564 code includes the debug output trace mechanism and has a much larger code
10565 and data size. Note that these values will vary depending on the
10567 of the compiler and the compiler options used during generation.
10570 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10571 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10573 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10574 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10578 2) iASL Compiler/Disassembler:
10580 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10582 corresponding ResourceSource string was not also present in a resource
10583 descriptor declaration. This restriction caused problems with existing
10584 AML/ASL code that includes the Index byte without the string. When such
10586 was disassembled, it could not be compiled without modification. Further,
10587 the modified code created a resource template with a different size than
10589 original, breaking code that used fixed offsets into the resource
10593 Removed a recent feature of the disassembler to ignore a lone
10595 byte. This byte is now emitted if present so that the exact AML can be
10596 reproduced when the disassembled code is recompiled.
10598 Improved comments and text alignment for the resource descriptor code
10599 emitted by the disassembler.
10601 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10603 Register() resource descriptor.
10605 ----------------------------------------
10606 30 September 2005. Summary of changes for version 20050930:
10608 1) ACPI CA Core Subsystem:
10610 Completed a major overhaul of the Resource Manager code - specifically,
10611 optimizations in the area of the AML/internal resource conversion code.
10613 code has been optimized to simplify and eliminate duplicated code, CPU
10615 use has been decreased by optimizing function parameters and local
10616 variables, and naming conventions across the manager have been
10618 for clarity and ease of maintenance (this includes function, parameter,
10619 variable, and struct/typedef names.) The update may force changes in some
10620 driver code, depending on how resources are handled by the host OS.
10622 All Resource Manager dispatch and information tables have been moved to a
10623 single location for clarity and ease of maintenance. One new file was
10624 created, named "rsinfo.c".
10626 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
10627 guarantee that the argument is not evaluated twice, making them less
10629 to macro side-effects. However, since there exists the possibility of
10630 additional stack use if a particular compiler cannot optimize them (such
10632 in the debug generation case), the original macros are optionally
10634 Note that some invocations of the return_VALUE macro may now cause size
10635 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
10637 eliminate these. (From Randy Dunlap)
10639 Implemented a new mechanism to enable debug tracing for individual
10641 methods. A new external interface, AcpiDebugTrace, is provided to enable
10642 this mechanism. The intent is to allow the host OS to easily enable and
10643 disable tracing for problematic control methods. This interface can be
10644 easily exposed to a user or debugger interface if desired. See the file
10645 psxface.c for details.
10647 AcpiUtCallocate will now return a valid pointer if a length of zero is
10648 specified - a length of one is used and a warning is issued. This matches
10649 the behavior of AcpiUtAllocate.
10651 Code and Data Size: The current and previous library sizes for the core
10652 subsystem are shown below. These are the code and data sizes for the
10653 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10655 values do not include any ACPI driver or OSPM code. The debug version of
10657 code includes the debug output trace mechanism and has a much larger code
10658 and data size. Note that these values will vary depending on the
10660 of the compiler and the compiler options used during generation.
10663 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10664 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10666 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10667 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10670 2) iASL Compiler/Disassembler:
10672 A remark is issued if the effective compile-time length of a package or
10673 buffer is zero. Previously, this was a warning.
10675 ----------------------------------------
10676 16 September 2005. Summary of changes for version 20050916:
10678 1) ACPI CA Core Subsystem:
10680 Fixed a problem within the Resource Manager where support for the Generic
10681 Register descriptor was not fully implemented. This descriptor is now
10683 recognized, parsed, disassembled, and displayed.
10685 Completely restructured the Resource Manager code to utilize table-driven
10686 dispatch and lookup, eliminating many of the large switch() statements.
10688 reduces overall subsystem code size and code complexity. Affects the
10689 resource parsing and construction, disassembly, and debug dump output.
10691 Cleaned up and restructured the debug dump output for all resource
10692 descriptors. Improved readability of the output and reduced code size.
10694 Fixed a problem where changes to internal data structures caused the
10695 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
10697 Code and Data Size: The current and previous library sizes for the core
10698 subsystem are shown below. These are the code and data sizes for the
10699 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10701 values do not include any ACPI driver or OSPM code. The debug version of
10703 code includes the debug output trace mechanism and has a much larger code
10704 and data size. Note that these values will vary depending on the
10706 of the compiler and the compiler options used during generation.
10709 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10710 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10712 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10713 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10716 2) iASL Compiler/Disassembler:
10718 Updated the disassembler to automatically insert an EndDependentFn()
10720 into the ASL stream if this macro is missing in the original AML code,
10721 simplifying compilation of the resulting ASL module.
10723 Fixed a problem in the disassembler where a disassembled ResourceSource
10724 string (within a large resource descriptor) was not surrounded by quotes
10726 not followed by a comma, causing errors when the resulting ASL module was
10727 compiled. Also, escape sequences within a ResourceSource string are now
10728 handled correctly (especially "\\")
10730 ----------------------------------------
10731 02 September 2005. Summary of changes for version 20050902:
10733 1) ACPI CA Core Subsystem:
10735 Fixed a problem with the internal Owner ID allocation and deallocation
10736 mechanisms for control method execution and recursive method invocation.
10737 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10738 messages seen on some systems. Recursive method invocation depth is
10739 currently limited to 255. (Alexey Starikovskiy)
10741 Completely eliminated all vestiges of support for the "module-level
10742 executable code" until this support is fully implemented and debugged.
10744 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10745 some systems that invoke this support.
10747 Fixed a problem within the resource manager code where the transaction
10749 for a 64-bit address descriptor were handled incorrectly in the type-
10750 specific flag byte.
10752 Consolidated duplicate code within the address descriptor resource
10754 code, reducing overall subsystem code size.
10756 Fixed a fault when using the AML debugger "disassemble" command to
10757 disassemble individual control methods.
10759 Removed references to the "release_current" directory within the Unix
10762 Code and Data Size: The current and previous core subsystem library sizes
10763 are shown below. These are the code and data sizes for the acpica.lib
10764 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10765 include any ACPI driver or OSPM code. The debug version of the code
10767 the debug output trace mechanism and has a much larger code and data
10769 Note that these values will vary depending on the efficiency of the
10771 and the compiler options used during generation.
10774 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10775 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10777 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10778 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10781 2) iASL Compiler/Disassembler:
10783 Implemented an error check for illegal duplicate values in the interrupt
10785 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10788 Implemented error checking for the Irq() and IrqNoFlags() macros to
10790 too many values in the interrupt list (16 max) and invalid values in the
10791 list (range 0 - 15)
10793 The maximum length string literal within an ASL file is now restricted to
10794 200 characters as per the ACPI specification.
10796 Fixed a fault when using the -ln option (generate namespace listing).
10798 Implemented an error check to determine if a DescriptorName within a
10799 resource descriptor has already been used within the current scope.
10801 ----------------------------------------
10802 15 August 2005. Summary of changes for version 20050815:
10804 1) ACPI CA Core Subsystem:
10806 Implemented a full bytewise compare to determine if a table load request
10808 attempting to load a duplicate table. The compare is performed if the
10810 signatures and table lengths match. This will allow different tables with
10811 the same OEM Table ID and revision to be loaded - probably against the
10813 specification, but discovered in the field nonetheless.
10815 Added the changes.txt logfile to each of the zipped release packages.
10817 Code and Data Size: Current and previous core subsystem library sizes are
10818 shown below. These are the code and data sizes for the acpica.lib
10820 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10821 any ACPI driver or OSPM code. The debug version of the code includes the
10822 debug output trace mechanism and has a much larger code and data size.
10824 that these values will vary depending on the efficiency of the compiler
10826 the compiler options used during generation.
10829 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10830 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10832 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10833 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10836 2) iASL Compiler/Disassembler:
10838 Fixed a problem where incorrect AML code could be generated for Package
10839 objects if optimization is disabled (via the -oa switch).
10841 Fixed a problem with where incorrect AML code is generated for variable-
10842 length packages when the package length is not specified and the number
10844 initializer values is greater than 255.
10847 ----------------------------------------
10848 29 July 2005. Summary of changes for version 20050729:
10850 1) ACPI CA Core Subsystem:
10852 Implemented support to ignore an attempt to install/load a particular
10854 table more than once. Apparently there exists BIOS code that repeatedly
10855 attempts to load the same SSDT upon certain events. With assistance from
10856 Venkatesh Pallipadi.
10858 Restructured the main interface to the AML parser in order to correctly
10859 handle all exceptional conditions. This will prevent leakage of the
10861 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
10863 machines. With assistance from Alexey Starikovskiy.
10865 Support for "module level code" has been disabled in this version due to
10867 number of issues that have appeared on various machines. The support can
10869 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
10870 compilation. When the issues are fully resolved, the code will be enabled
10874 Modified the internal functions for debug print support to define the
10875 FunctionName parameter as a (const char *) for compatibility with
10877 built-in macros such as __FUNCTION__, etc.
10879 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10881 Implemented support to display an object count summary for the AML
10883 commands Object and Methods.
10885 Code and Data Size: Current and previous core subsystem library sizes are
10886 shown below. These are the code and data sizes for the acpica.lib
10888 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10889 any ACPI driver or OSPM code. The debug version of the code includes the
10890 debug output trace mechanism and has a much larger code and data size.
10892 that these values will vary depending on the efficiency of the compiler
10894 the compiler options used during generation.
10897 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10898 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10900 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10901 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10904 2) iASL Compiler/Disassembler:
10906 Fixed a regression that appeared in the 20050708 version of the compiler
10907 where an error message was inadvertently emitted for invocations of the
10909 reserved control method.
10911 ----------------------------------------
10912 08 July 2005. Summary of changes for version 20050708:
10914 1) ACPI CA Core Subsystem:
10916 The use of the CPU stack in the debug version of the subsystem has been
10917 considerably reduced. Previously, a debug structure was declared in every
10918 function that used the debug macros. This structure has been removed in
10919 favor of declaring the individual elements as parameters to the debug
10920 functions. This reduces the cumulative stack use during nested execution
10922 ACPI function calls at the cost of a small increase in the code size of
10924 debug version of the subsystem. With assistance from Alexey Starikovskiy
10928 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10929 headers to define a macro that will return the current function name at
10930 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10932 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10933 compiler-dependent header, the function name is saved on the CPU stack
10935 pointer per function.) This mechanism is used because apparently there
10936 exists no standard ANSI-C defined macro that that returns the function
10939 Redesigned and reimplemented the "Owner ID" mechanism used to track
10940 namespace objects created/deleted by ACPI tables and control method
10941 execution. A bitmap is now used to allocate and free the IDs, thus
10943 the wraparound problem present in the previous implementation. The size
10945 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10948 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10950 flag definitions within the headers for the predefined ACPI tables. These
10951 have been replaced by UINT8_BIT in order to increase the code portability
10953 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10954 eliminate bitfields entirely because of a lack of portability.
10956 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10958 is a frequently used function and this improvement increases the
10960 of the entire subsystem (Alexey Starikovskiy).
10962 Fixed several possible memory leaks and the inverse - premature object
10963 deletion (Alexey Starikovskiy).
10965 Code and Data Size: Current and previous core subsystem library sizes are
10966 shown below. These are the code and data sizes for the acpica.lib
10968 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10969 any ACPI driver or OSPM code. The debug version of the code includes the
10970 debug output trace mechanism and has a much larger code and data size.
10972 that these values will vary depending on the efficiency of the compiler
10974 the compiler options used during generation.
10977 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10978 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10980 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10981 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10983 ----------------------------------------
10984 24 June 2005. Summary of changes for version 20050624:
10986 1) ACPI CA Core Subsystem:
10988 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10989 the host-defined cache object. This allows the OSL implementation to
10991 and type this object in any manner desired, simplifying the OSL
10992 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10993 Linux, and should be defined in the OS-specific header file for other
10994 operating systems as required.
10996 Changed the interface to AcpiOsAcquireObject to directly return the
10997 requested object as the function return (instead of ACPI_STATUS.) This
10998 change was made for performance reasons, since this is the purpose of the
10999 interface in the first place. AcpiOsAcquireObject is now similar to the
11000 AcpiOsAllocate interface.
11002 Implemented a new AML debugger command named Businfo. This command
11004 information about all devices that have an associate _PRT object. The
11006 _HID, _UID, and _CID are displayed for these devices.
11008 Modified the initialization sequence in AcpiInitializeSubsystem to call
11010 OSL interface AcpiOslInitialize first, before any local initialization.
11012 change was required because the global initialization now calls OSL
11015 Enhanced the Dump command to display the entire contents of Package
11017 (including all sub-objects and their values.)
11019 Restructured the code base to split some files because of size and/or
11020 because the code logically belonged in a separate file. New files are
11022 below. All makefiles and project files included in the ACPI CA release
11025 utilities/utcache.c /* Local cache interfaces */
11026 utilities/utmutex.c /* Local mutex support */
11027 utilities/utstate.c /* State object support */
11028 interpreter/parser/psloop.c /* Main AML parse loop */
11030 Code and Data Size: Current and previous core subsystem library sizes are
11031 shown below. These are the code and data sizes for the acpica.lib
11033 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11034 any ACPI driver or OSPM code. The debug version of the code includes the
11035 debug output trace mechanism and has a much larger code and data size.
11037 that these values will vary depending on the efficiency of the compiler
11039 the compiler options used during generation.
11042 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11043 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11045 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11046 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11049 2) iASL Compiler/Disassembler:
11051 Fixed a regression introduced in version 20050513 where the use of a
11053 object within a Case() statement caused a compile time exception. The
11054 original behavior has been restored (a Match() operator is emitted.)
11056 ----------------------------------------
11057 17 June 2005. Summary of changes for version 20050617:
11059 1) ACPI CA Core Subsystem:
11061 Moved the object cache operations into the OS interface layer (OSL) to
11063 the host OS to handle these operations if desired (for example, the Linux
11064 OSL will invoke the slab allocator). This support is optional; the
11066 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11068 code in the ACPI CA core. The new OSL interfaces are shown below. See
11069 utalloc.c for an example implementation, and acpiosxf.h for the exact
11070 interface definitions. With assistance from Alexey Starikovskiy.
11074 AcpiOsAcquireObject
11075 AcpiOsReleaseObject
11077 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11079 and restore a flags parameter. This fits better with many OS lock models.
11080 Note: the current execution state (interrupt handler or not) is no longer
11081 passed to these interfaces. If necessary, the OSL must determine this
11083 by itself, a simple and fast operation. With assistance from Alexey
11086 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11087 present if the revision of the RSDP was 2 or greater. According to the
11089 specification, the XSDT is optional in all cases, and the table manager
11090 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11091 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11095 Fixed an interpreter problem with the Mid() operator in the case of an
11097 string where the resulting output string is of zero length. It now
11099 returns a valid, null terminated string object instead of a string object
11100 with a null pointer.
11102 Fixed a problem with the control method argument handling to allow a
11104 to an Arg object that already contains an object of type Device. The
11106 object is now correctly overwritten. Previously, an error was returned.
11109 Enhanced the debugger Find command to emit object values in addition to
11111 found object pathnames. The output format is the same as the dump
11115 Enhanced the debugger Set command. It now has the ability to set the
11117 of any Named integer object in the namespace (Previously, only method
11119 and args could be set.)
11121 Code and Data Size: Current and previous core subsystem library sizes are
11122 shown below. These are the code and data sizes for the acpica.lib
11124 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11125 any ACPI driver or OSPM code. The debug version of the code includes the
11126 debug output trace mechanism and has a much larger code and data size.
11128 that these values will vary depending on the efficiency of the compiler
11130 the compiler options used during generation.
11133 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11134 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11136 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11137 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11140 2) iASL Compiler/Disassembler:
11142 Fixed a regression in the disassembler where if/else/while constructs
11144 output incorrectly. This problem was introduced in the previous release
11145 (20050526). This problem also affected the single-step disassembly in the
11148 Fixed a problem where compiling the reserved _OSI method would randomly
11150 rarely) produce compile errors.
11152 Enhanced the disassembler to emit compilable code in the face of
11154 AML resource descriptors. If the optional ResourceSourceIndex is present,
11155 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11156 disassembly. Otherwise, the resulting code cannot be compiled without
11159 ----------------------------------------
11160 26 May 2005. Summary of changes for version 20050526:
11162 1) ACPI CA Core Subsystem:
11164 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11165 the module level (not within a control method.) These opcodes are
11167 exactly once at the time the table is loaded. This type of code was legal
11169 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11171 order to provide backwards compatibility with earlier BIOS
11173 This eliminates the "Encountered executable code at module level" warning
11174 that was previously generated upon detection of such code.
11176 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11177 inadvertently be generated during the lookup of namespace objects in the
11178 second pass parse of ACPI tables and control methods. It appears that
11180 problem could occur during the resolution of forward references to
11184 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11185 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11186 allows the deadlock detection debug code to be compiled out in the normal
11187 case, improving mutex performance (and overall subsystem performance)
11190 Implemented a handful of miscellaneous fixes for possible memory leaks on
11191 error conditions and error handling control paths. These fixes were
11192 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11194 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11196 to prevent a fault in this error case.
11198 Code and Data Size: Current and previous core subsystem library sizes are
11199 shown below. These are the code and data sizes for the acpica.lib
11201 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11202 any ACPI driver or OSPM code. The debug version of the code includes the
11203 debug output trace mechanism and has a much larger code and data size.
11205 that these values will vary depending on the efficiency of the compiler
11207 the compiler options used during generation.
11210 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11211 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11213 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11214 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11217 2) iASL Compiler/Disassembler:
11219 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11220 the module level (not within a control method.) These operators will be
11221 executed once at the time the table is loaded. This type of code was
11223 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11224 compiler in order to provide backwards compatibility with earlier BIOS
11228 The ACPI integer width (specified via the table revision ID or the -r
11229 override, 32 or 64 bits) is now used internally during compile-time
11231 folding to ensure that constants are truncated to 32 bits if necessary.
11232 Previously, the revision ID value was only emitted in the AML table
11235 An error message is now generated for the Mutex and Method operators if
11237 SyncLevel parameter is outside the legal range of 0 through 15.
11239 Fixed a problem with the Method operator ParameterTypes list handling
11241 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11243 The actual underlying implementation of method argument typechecking is
11244 still under development, however.
11246 ----------------------------------------
11247 13 May 2005. Summary of changes for version 20050513:
11249 1) ACPI CA Core Subsystem:
11251 Implemented support for PCI Express root bridges -- added support for
11253 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11255 The interpreter now automatically truncates incoming 64-bit constants to
11257 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11259 also affects the iASL compiler constant folding. (Note: as per below, the
11260 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11262 Fixed a problem where string and buffer objects with "static" pointers
11263 (pointers to initialization data within an ACPI table) were not handled
11264 consistently. The internal object copy operation now always copies the
11266 to a newly allocated buffer, regardless of whether the source object is
11269 Fixed a problem with the FromBCD operator where an implicit result
11270 conversion was improperly performed while storing the result to the
11272 operand. Since this is an "explicit conversion" operator, the implicit
11273 conversion should never be performed on the output.
11275 Fixed a problem with the CopyObject operator where a copy to an existing
11276 named object did not always completely overwrite the existing object
11278 at name. Specifically, a buffer-to-buffer copy did not delete the
11282 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11284 structs for consistency.
11286 Code and Data Size: Current and previous core subsystem library sizes are
11287 shown below. These are the code and data sizes for the acpica.lib
11289 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11290 any ACPI driver or OSPM code. The debug version of the code includes the
11291 debug output trace mechanism and has a much larger code and data size.
11293 that these values will vary depending on the efficiency of the compiler
11295 the compiler options used during generation.
11298 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11299 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11300 Current Release: (Same sizes)
11301 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11302 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11305 2) iASL Compiler/Disassembler:
11307 The compiler now emits a warning if an attempt is made to generate a 64-
11309 integer constant from within a 32-bit ACPI table (Revision < 2). The
11311 is truncated to 32 bits.
11313 Fixed a problem with large package objects: if the static length of the
11314 package is greater than 255, the "variable length package" opcode is
11315 emitted. Previously, this caused an error. This requires an update to the
11316 ACPI spec, since it currently (incorrectly) states that packages larger
11318 255 elements are not allowed.
11320 The disassembler now correctly handles variable length packages and
11322 larger than 255 elements.
11324 ----------------------------------------
11325 08 April 2005. Summary of changes for version 20050408:
11327 1) ACPI CA Core Subsystem:
11329 Fixed three cases in the interpreter where an "index" argument to an ASL
11330 function was still (internally) 32 bits instead of the required 64 bits.
11331 This was the Index argument to the Index, Mid, and Match operators.
11333 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11335 not a POSIX-defined function and not present in most kernel-level C
11336 libraries. All references to the C library strupr function have been
11340 Completed the deployment of static functions/prototypes. All prototypes
11342 the static attribute have been moved from the headers to the owning C
11345 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11346 utility). This option allows the utility to extract individual ACPI
11348 from the output of AcpiDmp. It provides the same functionality of the
11349 acpixtract.pl perl script without the worry of setting the correct perl
11350 options. AcpiBin runs on Windows and has not yet been generated/validated
11352 the Linux/Unix environment (but should be soon).
11354 Updated and fixed the table dump option for AcpiBin (-d). This option
11355 converts a single ACPI table to a hex/ascii file, similar to the output
11359 Code and Data Size: Current and previous core subsystem library sizes are
11360 shown below. These are the code and data sizes for the acpica.lib
11362 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11363 any ACPI driver or OSPM code. The debug version of the code includes the
11364 debug output trace mechanism and has a much larger code and data size.
11366 that these values will vary depending on the efficiency of the compiler
11368 the compiler options used during generation.
11371 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11372 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11374 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11375 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11378 2) iASL Compiler/Disassembler:
11380 Disassembler fix: Added a check to ensure that the table length found in
11382 ACPI table header within the input file is not longer than the actual
11384 file size. This indicates some kind of file or table corruption.
11386 ----------------------------------------
11387 29 March 2005. Summary of changes for version 20050329:
11389 1) ACPI CA Core Subsystem:
11391 An error is now generated if an attempt is made to create a Buffer Field
11393 length zero (A CreateField with a length operand of zero.)
11395 The interpreter now issues a warning whenever executable code at the
11397 level is detected during ACPI table load. This will give some idea of the
11398 prevalence of this type of code.
11400 Implemented support for references to named objects (other than control
11401 methods) within package objects.
11403 Enhanced package object output for the debug object. Package objects are
11405 completely dumped, showing all elements.
11407 Enhanced miscellaneous object output for the debug object. Any object can
11408 now be written to the debug object (for example, a device object can be
11409 written, and the type of the object will be displayed.)
11411 The "static" qualifier has been added to all local functions across both
11413 core subsystem and the iASL compiler.
11415 The number of "long" lines (> 80 chars) within the source has been
11416 significantly reduced, by about 1/3.
11418 Cleaned up all header files to ensure that all CA/iASL functions are
11419 prototyped (even static functions) and the formatting is consistent.
11421 Two new header files have been added, acopcode.h and acnames.h.
11423 Removed several obsolete functions that were no longer used.
11425 Code and Data Size: Current and previous core subsystem library sizes are
11426 shown below. These are the code and data sizes for the acpica.lib
11428 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11429 any ACPI driver or OSPM code. The debug version of the code includes the
11430 debug output trace mechanism and has a much larger code and data size.
11432 that these values will vary depending on the efficiency of the compiler
11434 the compiler options used during generation.
11437 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11438 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11440 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11441 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11445 2) iASL Compiler/Disassembler:
11447 Fixed a problem with the resource descriptor generation/support. For the
11448 ResourceSourceIndex and the ResourceSource fields, both must be present,
11450 both must be not present - can't have one without the other.
11452 The compiler now returns non-zero from the main procedure if any errors
11454 occurred during the compilation.
11457 ----------------------------------------
11458 09 March 2005. Summary of changes for version 20050309:
11460 1) ACPI CA Core Subsystem:
11462 The string-to-buffer implicit conversion code has been modified again
11464 a change to the ACPI specification. In order to match the behavior of
11466 other major ACPI implementation, the target buffer is no longer truncated
11468 the source string is smaller than an existing target buffer. This change
11469 requires an update to the ACPI spec, and should eliminate the recent
11470 AE_AML_BUFFER_LIMIT issues.
11472 The "implicit return" support was rewritten to a new algorithm that
11474 the general case. Rather than attempt to determine when a method is about
11476 exit, the result of every ASL operator is saved momentarily until the
11478 next ASL operator is executed. Therefore, no matter how the method exits,
11479 there will always be a saved implicit return value. This feature is only
11480 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11482 AE_AML_NO_RETURN_VALUE errors when enabled.
11484 Implemented implicit conversion support for the predicate (operand) of
11486 If, Else, and While operators. String and Buffer arguments are
11488 converted to Integers.
11490 Changed the string-to-integer conversion behavior to match the new ACPI
11491 errata: "If no integer object exists, a new integer is created. The ASCII
11492 string is interpreted as a hexadecimal constant. Each string character is
11493 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11494 with the first character as the most significant digit, and ending with
11496 first non-hexadecimal character or end-of-string." This means that the
11498 non-hex character terminates the conversion and this is the code that was
11501 Fixed a problem where the ObjectType operator would fail (fault) when
11503 on an Index of a Package which pointed to a null package element. The
11504 operator now properly returns zero (Uninitialized) in this case.
11506 Fixed a problem where the While operator used excessive memory by not
11507 properly popping the result stack during execution. There was no memory
11509 after execution, however. (Code provided by Valery Podrezov.)
11511 Fixed a problem where references to control methods within Package
11513 caused the method to be invoked, instead of producing a reference object
11514 pointing to the method.
11516 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11518 improve performance and reduce code size. (Code provided by Alexey
11521 Code and Data Size: Current and previous core subsystem library sizes are
11522 shown below. These are the code and data sizes for the acpica.lib
11524 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11525 any ACPI driver or OSPM code. The debug version of the code includes the
11526 debug output trace mechanism and has a much larger code and data size.
11528 that these values will vary depending on the efficiency of the compiler
11530 the compiler options used during generation.
11533 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11534 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11536 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11537 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11540 2) iASL Compiler/Disassembler:
11542 Fixed a problem with the Return operator with no arguments. Since the AML
11543 grammar for the byte encoding requires an operand for the Return opcode,
11545 compiler now emits a Return(Zero) for this case. An ACPI specification
11546 update has been written for this case.
11548 For tables other than the DSDT, namepath optimization is automatically
11549 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11551 compiler has no knowledge of where, and thus cannot optimize namepaths.
11553 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11554 inadvertently omitted from the ACPI specification, and will require an
11555 update to the spec.
11557 The source file scan for ASCII characters is now optional (-a). This
11559 was made because some vendors place non-ascii characters within comments.
11560 However, the scan is simply a brute-force byte compare to ensure all
11561 characters in the file are in the range 0x00 to 0x7F.
11563 Fixed a problem with the CondRefOf operator where the compiler was
11564 inappropriately checking for the existence of the target. Since the point
11566 the operator is to check for the existence of the target at run-time, the
11567 compiler no longer checks for the target existence.
11569 Fixed a problem where errors generated from the internal AML interpreter
11570 during constant folding were not handled properly, causing a fault.
11572 Fixed a problem with overly aggressive range checking for the Stall
11573 operator. The valid range (max 255) is now only checked if the operand is
11575 type Integer. All other operand types cannot be statically checked.
11577 Fixed a problem where control method references within the RefOf,
11579 and ObjectType operators were not treated properly. They are now treated
11581 actual references, not method invocations.
11583 Fixed and enhanced the "list namespace" option (-ln). This option was
11585 a number of releases ago.
11587 Improved error handling for the Field, IndexField, and BankField
11589 The compiler now cleanly reports and recovers from errors in the field
11590 component (FieldUnit) list.
11592 Fixed a disassembler problem where the optional ResourceDescriptor fields
11593 TRS and TTP were not always handled correctly.
11595 Disassembler - Comments in output now use "//" instead of "/*"
11597 ----------------------------------------
11598 28 February 2005. Summary of changes for version 20050228:
11600 1) ACPI CA Core Subsystem:
11602 Fixed a problem where the result of an Index() operator (an object
11603 reference) must increment the reference count on the target object for
11605 life of the object reference.
11607 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
11608 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
11610 resource descriptors.
11612 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
11613 Space Descriptor" string, indicating interpreter support for the
11617 Implemented header support for the new ACPI 3.0 FADT flag bits.
11619 Implemented header support for the new ACPI 3.0 PCI Express bits for the
11621 status/enable registers.
11623 Updated header support for the MADT processor local Apic struct and MADT
11624 platform interrupt source struct for new ACPI 3.0 fields.
11626 Implemented header support for the SRAT and SLIT ACPI tables.
11628 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
11632 Code and Data Size: Current and previous core subsystem library sizes are
11633 shown below. These are the code and data sizes for the acpica.lib
11635 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11636 any ACPI driver or OSPM code. The debug version of the code includes the
11637 debug output trace mechanism and has a much larger code and data size.
11639 that these values will vary depending on the efficiency of the compiler
11641 the compiler options used during generation.
11644 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11645 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11647 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11648 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11651 2) iASL Compiler/Disassembler:
11653 Fixed a problem with the internal 64-bit String-to-integer conversion
11655 strings less than two characters long.
11657 Fixed a problem with constant folding where the result of the Index()
11658 operator can not be considered a constant. This means that Index() cannot
11660 a type3 opcode and this will require an update to the ACPI specification.
11662 Disassembler: Implemented support for the TTP, MTP, and TRS resource
11663 descriptor fields. These fields were inadvertently ignored and not output
11665 the disassembly of the resource descriptor.
11668 ----------------------------------------
11669 11 February 2005. Summary of changes for version 20050211:
11671 1) ACPI CA Core Subsystem:
11673 Implemented ACPI 3.0 support for implicit conversion within the Match()
11674 operator. MatchObjects can now be of type integer, buffer, or string
11676 of just type integer. Package elements are implicitly converted to the
11678 of the MatchObject. This change aligns the behavior of Match() with the
11679 behavior of the other logical operators (LLess(), etc.) It also requires
11681 errata change to the ACPI specification as this support was intended for
11682 ACPI 3.0, but was inadvertently omitted.
11684 Fixed a problem with the internal implicit "to buffer" conversion.
11686 that are converted to buffers will cause buffer truncation if the string
11688 smaller than the target buffer. Integers that are converted to buffers
11690 not cause buffer truncation, only zero extension (both as per the ACPI
11691 spec.) The problem was introduced when code was added to truncate the
11692 buffer, but this should not be performed in all cases, only the string
11695 Fixed a problem with the Buffer and Package operators where the
11697 would get confused if two such operators were used as operands to an ASL
11698 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
11699 stack was not being popped after the execution of these operators,
11701 in an AE_NO_RETURN_VALUE exception.
11703 Fixed a problem with constructs of the form Store(Index(...),...). The
11704 reference object returned from Index was inadvertently resolved to an
11706 value. This problem was introduced in version 20050114 when the behavior
11708 Store() was modified to restrict the object types that can be used as the
11709 source operand (to match the ACPI specification.)
11711 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11713 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11715 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11717 Code and Data Size: Current and previous core subsystem library sizes are
11718 shown below. These are the code and data sizes for the acpica.lib
11720 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11721 any ACPI driver or OSPM code. The debug version of the code includes the
11722 debug output trace mechanism and has a much larger code and data size.
11724 that these values will vary depending on the efficiency of the compiler
11726 the compiler options used during generation.
11729 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11730 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11732 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11733 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11736 2) iASL Compiler/Disassembler:
11738 Fixed a code generation problem in the constant folding optimization code
11739 where incorrect code was generated if a constant was reduced to a buffer
11740 object (i.e., a reduced type 5 opcode.)
11742 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11743 incorrect return type in the internal opcode information table.
11745 ----------------------------------------
11746 25 January 2005. Summary of changes for version 20050125:
11748 1) ACPI CA Core Subsystem:
11750 Fixed a recently introduced problem with the Global Lock where the
11751 underlying semaphore was not created. This problem was introduced in
11752 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11753 Acquire() operation on _GL.
11755 The local object cache is now optional, and is disabled by default. Both
11756 AcpiExec and the iASL compiler enable the cache because they run in user
11757 mode and this enhances their performance. #define
11758 ACPI_ENABLE_OBJECT_CACHE
11759 to enable the local cache.
11761 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11763 optional "implicit return" support where an error was returned if no
11765 object was expected, but one was implicitly returned. AE_OK is now
11767 in this case and the implicitly returned object is deleted.
11768 AcpiUtEvaluateObject is only occasionally used, and only to execute
11770 methods such as _STA and _INI where the return type is known up front.
11772 Fixed a few issues with the internal convert-to-integer code. It now
11774 an error if an attempt is made to convert a null string, a string of only
11775 blanks/tabs, or a zero-length buffer. This affects both implicit
11777 and explicit conversion via the ToInteger() operator.
11779 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11781 not needed for normal operation and should increase the performance of
11783 entire subsystem. The code remains in case it is needed for debug
11787 The AcpiExec source and makefile are included in the Unix/Linux package
11791 Code and Data Size: Current and previous core subsystem library sizes are
11792 shown below. These are the code and data sizes for the acpica.lib
11794 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11795 any ACPI driver or OSPM code. The debug version of the code includes the
11796 debug output trace mechanism and has a much larger code and data size.
11798 that these values will vary depending on the efficiency of the compiler
11800 the compiler options used during generation.
11803 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11804 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11806 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11807 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11809 2) iASL Compiler/Disassembler:
11811 Switch/Case support: A warning is now issued if the type of the Switch
11813 cannot be determined at compile time. For example, Switch(Arg0) will
11814 generate the warning, and the type is assumed to be an integer. As per
11816 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11820 Switch/Case support: Implemented support for buffer and string objects as
11821 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11822 buffers and strings.
11824 Switch/Case support: The emitted code for the LEqual() comparisons now
11826 the switch value as the first operand, not the second. The case value is
11828 the second operand, and this allows the case value to be implicitly
11829 converted to the type of the switch value, not the other way around.
11831 Switch/Case support: Temporary variables are now emitted immediately
11833 the control method, not at the global level. This means that there are
11835 36 temps available per-method, not 36 temps per-module as was the case
11837 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11839 ----------------------------------------
11840 14 January 2005. Summary of changes for version 20050114:
11842 Added 2005 copyright to all module headers. This affects every module in
11843 the core subsystem, iASL compiler, and the utilities.
11845 1) ACPI CA Core Subsystem:
11847 Fixed an issue with the String-to-Buffer conversion code where the string
11848 null terminator was not included in the buffer after conversion, but
11850 is existing ASL that assumes the string null terminator is included. This
11852 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
11853 introduced in the previous version when the code was updated to correctly
11854 set the converted buffer size as per the ACPI specification. The ACPI
11856 is ambiguous and will be updated to specify that the null terminator must
11858 included in the converted buffer. This also affects the ToBuffer() ASL
11861 Fixed a problem with the Mid() ASL/AML operator where it did not work
11862 correctly on Buffer objects. Newly created sub-buffers were not being
11867 Fixed a problem in AcpiTbFindTable where incorrect string compares were
11868 performed on the OemId and OemTableId table header fields. These fields
11870 not null terminated, so strncmp is now used instead of strcmp.
11872 Implemented a restriction on the Store() ASL/AML operator to align the
11873 behavior with the ACPI specification. Previously, any object could be
11875 as the source operand. Now, the only objects that may be used are
11877 Buffers, Strings, Packages, Object References, and DDB Handles. If
11878 necessary, the original behavior can be restored by enabling the
11879 EnableInterpreterSlack flag.
11881 Enhanced the optional "implicit return" support to allow an implicit
11883 value from methods that are invoked externally via the AcpiEvaluateObject
11884 interface. This enables implicit returns from the _STA and _INI methods,
11887 Changed the Revision() ASL/AML operator to return the current version of
11889 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11891 the supported ACPI version (This is the function of the _REV method).
11893 Updated the _REV predefined method to return the currently supported
11897 Implemented batch mode option for the AcpiExec utility (-b).
11899 Code and Data Size: Current and previous core subsystem library sizes are
11900 shown below. These are the code and data sizes for the acpica.lib
11902 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11903 any ACPI driver or OSPM code. The debug version of the code includes the
11904 debug output trace mechanism and has a much larger code and data size.
11906 that these values will vary depending on the efficiency of the compiler
11908 the compiler options used during generation.
11911 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11912 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11914 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11915 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11917 ----------------------------------------
11918 10 December 2004. Summary of changes for version 20041210:
11920 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11921 ACPI CA core subsystem.
11923 1) ACPI CA Core Subsystem:
11925 Fixed a problem in the ToDecimalString operator where the resulting
11927 length was incorrectly calculated. The length is now calculated exactly,
11928 eliminating incorrect AE_STRING_LIMIT exceptions.
11930 Fixed a problem in the ToHexString operator to allow a maximum 200
11932 string to be produced.
11934 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11936 routine where the length of the resulting buffer was not truncated to the
11937 new size (if the target buffer already existed).
11939 Code and Data Size: Current and previous core subsystem library sizes are
11940 shown below. These are the code and data sizes for the acpica.lib
11942 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11943 any ACPI driver or OSPM code. The debug version of the code includes the
11944 debug output trace mechanism and has a much larger code and data size.
11946 that these values will vary depending on the efficiency of the compiler
11948 the compiler options used during generation.
11951 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11952 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11954 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11955 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11958 2) iASL Compiler/Disassembler:
11960 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11961 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11962 Includes support in the disassembler.
11964 Implemented support for the new (ACPI 3.0) parameter to the Register
11968 Fixed a problem where the _HE resource name for the Interrupt macro was
11969 referencing bit 0 instead of bit 1.
11971 Implemented check for maximum 255 interrupts in the Interrupt macro.
11973 Fixed a problem with the predefined resource descriptor names where
11974 incorrect AML code was generated if the offset within the resource buffer
11975 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11976 but did not update the surrounding package lengths.
11978 Changes to the Dma macro: All channels within the channel list must be
11980 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11981 optional (default is BusMaster).
11983 Implemented check for maximum 7 data bytes for the VendorShort macro.
11985 The ReadWrite parameter is now optional for the Memory32 and similar
11988 ----------------------------------------
11989 03 December 2004. Summary of changes for version 20041203:
11991 1) ACPI CA Core Subsystem:
11993 The low-level field insertion/extraction code (exfldio) has been
11995 rewritten to eliminate unnecessary complexity, bugs, and boundary
11998 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12000 operators where the input operand could be inadvertently deleted if no
12001 conversion was necessary (e.g., if the input to ToInteger was an Integer
12004 Fixed a problem with the ToDecimalString and ToHexString where an
12006 exception code was returned if the resulting string would be > 200 chars.
12007 AE_STRING_LIMIT is now returned.
12009 Fixed a problem with the Concatenate operator where AE_OK was always
12010 returned, even if the operation failed.
12012 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12013 semaphores to be allocated.
12015 Code and Data Size: Current and previous core subsystem library sizes are
12016 shown below. These are the code and data sizes for the acpica.lib
12018 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12019 any ACPI driver or OSPM code. The debug version of the code includes the
12020 debug output trace mechanism and has a much larger code and data size.
12022 that these values will vary depending on the efficiency of the compiler
12024 the compiler options used during generation.
12027 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12028 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12030 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12031 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12034 2) iASL Compiler/Disassembler:
12036 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12037 recently introduced in 20041119.
12039 Fixed a problem with the ToUUID macro where the upper nybble of each
12041 byte was inadvertently set to zero.
12043 ----------------------------------------
12044 19 November 2004. Summary of changes for version 20041119:
12046 1) ACPI CA Core Subsystem:
12048 Fixed a problem in the internal ConvertToInteger routine where new
12050 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12052 buffers and strings to integers.
12054 Implemented support to store a value to an Index() on a String object.
12056 is an ACPI 2.0 feature that had not yet been implemented.
12058 Implemented new behavior for storing objects to individual package
12060 (via the Index() operator). The previous behavior was to invoke the
12062 conversion rules if an object was already present at the index. The new
12063 behavior is to simply delete any existing object and directly store the
12065 object. Although the ACPI specification seems unclear on this subject,
12067 ACPI implementations behave in this manner. (This is the root of the
12068 AE_BAD_HEX_CONSTANT issue.)
12070 Modified the RSDP memory scan mechanism to support the extended checksum
12072 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12073 RSDP signature is found with a valid checksum.
12075 Code and Data Size: Current and previous core subsystem library sizes are
12076 shown below. These are the code and data sizes for the acpica.lib
12078 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12079 any ACPI driver or OSPM code. The debug version of the code includes the
12080 debug output trace mechanism and has a much larger code and data size.
12082 that these values will vary depending on the efficiency of the compiler
12084 the compiler options used during generation.
12087 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12088 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12090 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12091 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12094 2) iASL Compiler/Disassembler:
12096 Fixed a missing semicolon in the aslcompiler.y file.
12098 ----------------------------------------
12099 05 November 2004. Summary of changes for version 20041105:
12101 1) ACPI CA Core Subsystem:
12103 Implemented support for FADT revision 2. This was an interim table
12105 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12107 Implemented optional support to allow uninitialized LocalX and ArgX
12108 variables in a control method. The variables are initialized to an
12110 object with a value of zero. This support is enabled by setting the
12111 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12113 Implemented support for Integer objects for the SizeOf operator. Either
12115 or 8 is returned, depending on the current integer size (32-bit or 64-
12117 depending on the parent table revision).
12119 Fixed a problem in the implementation of the SizeOf and ObjectType
12121 where the operand was resolved to a value too early, causing incorrect
12122 return values for some objects.
12124 Fixed some possible memory leaks during exceptional conditions.
12126 Code and Data Size: Current and previous core subsystem library sizes are
12127 shown below. These are the code and data sizes for the acpica.lib
12129 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12130 any ACPI driver or OSPM code. The debug version of the code includes the
12131 debug output trace mechanism and has a much larger code and data size.
12133 that these values will vary depending on the efficiency of the compiler
12135 the compiler options used during generation.
12138 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12139 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12141 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12142 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12145 2) iASL Compiler/Disassembler:
12147 Implemented support for all ACPI 3.0 reserved names and methods.
12149 Implemented all ACPI 3.0 grammar elements in the front-end, including
12150 support for semicolons.
12152 Implemented the ACPI 3.0 Function() and ToUUID() macros
12154 Fixed a problem in the disassembler where a Scope() operator would not be
12155 emitted properly if the target of the scope was in another table.
12157 ----------------------------------------
12158 15 October 2004. Summary of changes for version 20041015:
12160 Note: ACPI CA is currently undergoing an in-depth and complete formal
12161 evaluation to test/verify the following areas. Other suggestions are
12162 welcome. This will result in an increase in the frequency of releases and
12163 the number of bug fixes in the next few months.
12164 - Functional tests for all ASL/AML operators
12165 - All implicit/explicit type conversions
12166 - Bit fields and operation regions
12167 - 64-bit math support and 32-bit-only "truncated" math support
12168 - Exceptional conditions, both compiler and interpreter
12169 - Dynamic object deletion and memory leaks
12170 - ACPI 3.0 support when implemented
12171 - External interfaces to the ACPI subsystem
12174 1) ACPI CA Core Subsystem:
12176 Fixed two alignment issues on 64-bit platforms - within debug statements
12178 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12180 field within the non-aligned ACPI generic address structure.
12182 Fixed a problem in the Increment and Decrement operators where incorrect
12183 operand resolution could result in the inadvertent modification of the
12184 original integer when the integer is passed into another method as an
12185 argument and the arg is then incremented/decremented.
12187 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12189 BCD number were truncated during conversion.
12191 Fixed a problem in the ToDecimal operator where the length of the
12193 string could be set incorrectly too long if the input operand was a
12197 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12199 within a buffer would prematurely terminate a compare between buffer
12202 Added a check for string overflow (>200 characters as per the ACPI
12203 specification) during the Concatenate operator with two string operands.
12205 Code and Data Size: Current and previous core subsystem library sizes are
12206 shown below. These are the code and data sizes for the acpica.lib
12208 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12209 any ACPI driver or OSPM code. The debug version of the code includes the
12210 debug output trace mechanism and has a much larger code and data size.
12212 that these values will vary depending on the efficiency of the compiler
12214 the compiler options used during generation.
12217 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12218 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12220 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12221 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12225 2) iASL Compiler/Disassembler:
12227 Allow the use of the ObjectType operator on uninitialized Locals and Args
12228 (returns 0 as per the ACPI specification).
12230 Fixed a problem where the compiler would fault if there was a syntax
12232 in the FieldName of all of the various CreateXXXField operators.
12234 Disallow the use of lower case letters within the EISAID macro, as per
12236 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12238 U is an uppercase letter and N is a hex digit.
12241 ----------------------------------------
12242 06 October 2004. Summary of changes for version 20041006:
12244 1) ACPI CA Core Subsystem:
12246 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12247 implements a 64-bit timer with 100 nanosecond granularity.
12249 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12250 implement the ACPI 3.0 Timer operator. This allows the host OS to
12252 the timer with the best clock available. Also, it keeps the core
12254 out of the clock handling business, since the host OS (usually) performs
12257 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12258 functions use a 64-bit address which is part of the packed ACPI Generic
12259 Address Structure. Since the structure is non-aligned, the alignment
12261 are now used to extract the address to a local variable before use.
12263 Fixed a problem where the ToInteger operator assumed all input strings
12265 hexadecimal. The operator now handles both decimal strings and hex
12267 (prefixed with "0x").
12269 Fixed a problem where the string length in the string object created as a
12270 result of the internal ConvertToString procedure could be incorrect. This
12271 potentially affected all implicit conversions and also the
12273 and ToHexString operators.
12275 Fixed two problems in the ToString operator. If the length parameter was
12276 zero, an incorrect string object was created and the value of the input
12277 length parameter was inadvertently changed from zero to Ones.
12279 Fixed a problem where the optional ResourceSource string in the
12281 resource macro was ignored.
12283 Simplified the interfaces to the internal division functions, reducing
12285 size and complexity.
12287 Code and Data Size: Current and previous core subsystem library sizes are
12288 shown below. These are the code and data sizes for the acpica.lib
12290 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12291 any ACPI driver or OSPM code. The debug version of the code includes the
12292 debug output trace mechanism and has a much larger code and data size.
12294 that these values will vary depending on the efficiency of the compiler
12296 the compiler options used during generation.
12299 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12300 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12302 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12303 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12306 2) iASL Compiler/Disassembler:
12308 Implemented support for the ACPI 3.0 Timer operator.
12310 Fixed a problem where the Default() operator was inadvertently ignored in
12312 Switch/Case block. This was a problem in the translation of the Switch
12313 statement to If...Else pairs.
12315 Added support to allow a standalone Return operator, with no parentheses
12319 Fixed a problem with code generation for the ElseIf operator where the
12320 translated Else...If parse tree was improperly constructed leading to the
12323 ----------------------------------------
12324 22 September 2004. Summary of changes for version 20040922:
12326 1) ACPI CA Core Subsystem:
12328 Fixed a problem with the implementation of the LNot() operator where
12330 was not returned for the TRUE case. Changed the code to return Ones
12332 of (!Arg) which was usually 1. This change affects iASL constant folding
12334 this operator also.
12336 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12338 initialized properly -- Now zero the entire buffer in this case where the
12339 buffer already exists.
12341 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12342 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12343 related code considerably. This will require changes/updates to all OS
12344 interface layers (OSLs.)
12346 Implemented a new external interface, AcpiInstallExceptionHandler, to
12348 a system exception handler to be installed. This handler is invoked upon
12350 run-time exception that occurs during control method execution.
12352 Added support for the DSDT in AcpiTbFindTable. This allows the
12353 DataTableRegion() operator to access the local copy of the DSDT.
12355 Code and Data Size: Current and previous core subsystem library sizes are
12356 shown below. These are the code and data sizes for the acpica.lib
12358 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12359 any ACPI driver or OSPM code. The debug version of the code includes the
12360 debug output trace mechanism and has a much larger code and data size.
12362 that these values will vary depending on the efficiency of the compiler
12364 the compiler options used during generation.
12367 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12368 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12370 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12371 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12374 2) iASL Compiler/Disassembler:
12376 Fixed a problem with constant folding and the LNot operator. LNot was
12377 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12379 could result in the generation of an incorrect folded/reduced constant.
12381 End-Of-File is now allowed within a "//"-style comment. A parse error no
12382 longer occurs if such a comment is at the very end of the input ASL
12386 Implemented the "-r" option to override the Revision in the table header.
12387 The initial use of this option will be to simplify the evaluation of the
12389 interpreter by allowing a single ASL source module to be compiled for
12391 32-bit or 64-bit integers.
12394 ----------------------------------------
12395 27 August 2004. Summary of changes for version 20040827:
12397 1) ACPI CA Core Subsystem:
12399 - Implemented support for implicit object conversion in the non-numeric
12400 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12402 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12403 the second operand is implicitly converted on the fly to match the type
12405 the first operand. For example:
12407 LEqual (Source1, Source2)
12409 Source1 and Source2 must each evaluate to an integer, a string, or a
12411 The data type of Source1 dictates the required type of Source2. Source2
12413 implicitly converted if necessary to match the type of Source1.
12415 - Updated and corrected the behavior of the string conversion support.
12417 rules concerning conversion of buffers to strings (according to the ACPI
12418 specification) are as follows:
12420 ToDecimalString - explicit byte-wise conversion of buffer to string of
12421 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12423 conversion of buffer to string of hex values (0-FF) separated by commas.
12424 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12426 copy with no transform except NULL terminated. Any other implicit buffer-
12428 string conversion - byte-wise conversion of buffer to string of hex
12430 (0-FF) separated by spaces.
12432 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12434 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12436 one byte too short in the case of a node in the root scope. This could
12437 cause a fault during debug output.
12439 - Code and Data Size: Current and previous core subsystem library sizes
12441 shown below. These are the code and data sizes for the acpica.lib
12443 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12444 any ACPI driver or OSPM code. The debug version of the code includes the
12445 debug output trace mechanism and has a much larger code and data size.
12447 that these values will vary depending on the efficiency of the compiler
12449 the compiler options used during generation.
12452 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12453 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12455 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12456 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12459 2) iASL Compiler/Disassembler:
12461 - Fixed a Linux generation error.
12464 ----------------------------------------
12465 16 August 2004. Summary of changes for version 20040816:
12467 1) ACPI CA Core Subsystem:
12469 Designed and implemented support within the AML interpreter for the so-
12470 called "implicit return". This support returns the result of the last
12472 operation within a control method, in the absence of an explicit Return()
12473 operator. A few machines depend on this behavior, even though it is not
12474 explicitly supported by the ASL language. It is optional support that
12476 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12478 Removed support for the PCI_Config address space from the internal low
12480 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12481 support was not used internally, and would not work correctly anyway
12483 the PCI bus number and segment number were not supported. There are
12484 separate interfaces for PCI configuration space access because of the
12488 Code and Data Size: Current and previous core subsystem library sizes are
12489 shown below. These are the code and data sizes for the acpica.lib
12491 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12492 any ACPI driver or OSPM code. The debug version of the code includes the
12493 debug output trace mechanism and has a much larger code and data size.
12495 that these values will vary depending on the efficiency of the compiler
12497 the compiler options used during generation.
12500 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12501 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12503 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12504 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12507 2) iASL Compiler/Disassembler:
12509 Fixed a problem where constants in ASL expressions at the root level (not
12510 within a control method) could be inadvertently truncated during code
12511 generation. This problem was introduced in the 20040715 release.
12514 ----------------------------------------
12515 15 July 2004. Summary of changes for version 20040715:
12517 1) ACPI CA Core Subsystem:
12519 Restructured the internal HW GPE interfaces to pass/track the current
12521 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12522 increase flexibility of the interfaces.
12524 Implemented a "lexicographical compare" for String and Buffer objects
12526 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12528 as per further clarification to the ACPI specification. Behavior is
12530 to C library "strcmp".
12532 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12533 external function. In the 32-bit non-debug case, the stack use has been
12534 reduced from 168 bytes to 32 bytes.
12536 Deployed a new run-time configuration flag,
12537 AcpiGbl_EnableInterpreterSlack,
12538 whose purpose is to allow the AML interpreter to forgive certain bad AML
12539 constructs. Default setting is FALSE.
12541 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12543 support code. If enabled, it allows field access to go beyond the end of
12545 region definition if the field is within the region length rounded up to
12547 next access width boundary (a common coding error.)
12549 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12550 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12552 symbols are lowercased by the latest version of the AcpiSrc tool.
12554 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12555 rename "Register" to simply "Reg" to prevent certain compilers from
12558 Code and Data Size: Current and previous core subsystem library sizes are
12559 shown below. These are the code and data sizes for the acpica.lib
12561 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12562 any ACPI driver or OSPM code. The debug version of the code includes the
12563 debug output trace mechanism and has a much larger code and data size.
12565 that these values will vary depending on the efficiency of the compiler
12567 the compiler options used during generation.
12570 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12571 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12573 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12574 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12577 2) iASL Compiler/Disassembler:
12579 Implemented full support for Package objects within the Case() operator.
12580 Note: The Break() operator is currently not supported within Case blocks
12581 (TermLists) as there is some question about backward compatibility with
12586 Fixed a problem where complex terms were not supported properly within
12590 Eliminated extraneous warning for compiler-emitted reserved names of the
12591 form "_T_x". (Used in Switch/Case operators.)
12593 Eliminated optimization messages for "_T_x" objects and small constants
12594 within the DefinitionBlock operator.
12597 ----------------------------------------
12598 15 June 2004. Summary of changes for version 20040615:
12600 1) ACPI CA Core Subsystem:
12602 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12604 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12607 All directory names in the entire source package are lower case, as they
12608 were in earlier releases.
12610 Implemented "Disassemble" command in the AML debugger that will
12612 a single control method.
12614 Code and Data Size: Current and previous core subsystem library sizes are
12615 shown below. These are the code and data sizes for the acpica.lib
12617 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12618 any ACPI driver or OSPM code. The debug version of the code includes the
12619 debug output trace mechanism and has a much larger code and data size.
12621 that these values will vary depending on the efficiency of the compiler
12623 the compiler options used during generation.
12626 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12627 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12630 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12631 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12634 2) iASL Compiler/Disassembler:
12636 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12638 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12641 All directory names in the entire source package are lower case, as they
12642 were in earlier releases.
12644 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
12647 Fixed an issue with the Windows version of the compiler where later
12649 of Windows place the FADT in the registry under the name "FADT" and not
12650 "FACP" as earlier versions did. This applies when using the -g or -
12651 d<nofilename> options. The compiler now looks for both strings as
12654 Fixed a problem with compiler namepath optimization where a namepath
12656 the Scope() operator could not be optimized if the namepath was a subpath
12658 the current scope path.
12660 ----------------------------------------
12661 27 May 2004. Summary of changes for version 20040527:
12663 1) ACPI CA Core Subsystem:
12665 Completed a new design and implementation for EBDA (Extended BIOS Data
12667 support in the RSDP scan code. The original code improperly scanned for
12669 EBDA by simply scanning from memory location 0 to 0x400. The correct
12671 is to first obtain the EBDA pointer from within the BIOS data area, then
12672 scan 1K of memory starting at the EBDA pointer. There appear to be few
12674 any machines that place the RSDP in the EBDA, however.
12676 Integrated a fix for a possible fault during evaluation of BufferField
12677 arguments. Obsolete code that was causing the problem was removed.
12679 Found and fixed a problem in the Field Support Code where data could be
12680 corrupted on a bit field read that starts on an aligned boundary but does
12681 not end on an aligned boundary. Merged the read/write "datum length"
12682 calculation code into a common procedure.
12684 Rolled in a couple of changes to the FreeBSD-specific header.
12687 Code and Data Size: Current and previous core subsystem library sizes are
12688 shown below. These are the code and data sizes for the acpica.lib
12690 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12691 any ACPI driver or OSPM code. The debug version of the code includes the
12692 debug output trace mechanism and has a much larger code and data size.
12694 that these values will vary depending on the efficiency of the compiler
12696 the compiler options used during generation.
12699 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12700 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12702 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12703 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12706 2) iASL Compiler/Disassembler:
12708 Fixed a generation warning produced by some overly-verbose compilers for
12712 ----------------------------------------
12713 14 May 2004. Summary of changes for version 20040514:
12715 1) ACPI CA Core Subsystem:
12717 Fixed a problem where hardware GPE enable bits sometimes not set properly
12718 during and after GPE method execution. Result of 04/27 changes.
12720 Removed extra "clear all GPEs" when sleeping/waking.
12722 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12723 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12725 the new AcpiEv* calls as appropriate.
12727 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12729 now "Microsoft Windows NT" for maximum compatibility. However this can
12731 changed by modifying the acconfig.h file.
12733 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12734 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12736 Run _INI methods on ThermalZone objects. This is against the ACPI
12737 specification, but there is apparently ASL code in the field that has
12739 _INI methods, and apparently "other" AML interpreters execute them.
12741 Performed a full 16/32/64 bit lint that resulted in some small changes.
12743 Added a sleep simulation command to the AML debugger to test sleep code.
12745 Code and Data Size: Current and previous core subsystem library sizes are
12746 shown below. These are the code and data sizes for the acpica.lib
12748 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12749 any ACPI driver or OSPM code. The debug version of the code includes the
12750 debug output trace mechanism and has a much larger code and data size.
12752 that these values will vary depending on the efficiency of the compiler
12754 the compiler options used during generation.
12757 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12758 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12760 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12761 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12763 ----------------------------------------
12764 27 April 2004. Summary of changes for version 20040427:
12766 1) ACPI CA Core Subsystem:
12768 Completed a major overhaul of the GPE handling within ACPI CA. There are
12769 now three types of GPEs: wake-only, runtime-only, and combination
12771 The only GPEs allowed to be combination wake/run are for button-style
12772 devices such as a control-method power button, control-method sleep
12774 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12776 referenced by any _PRW methods are marked for "runtime" and hardware
12777 enabled. Any GPE that is referenced by a _PRW method is marked for
12779 (and disabled at runtime). However, at sleep time, only those GPEs that
12780 have been specifically enabled for wake via the AcpiEnableGpe interface
12782 actually be hardware enabled.
12784 A new external interface has been added, AcpiSetGpeType(), that is meant
12786 be used by device drivers to force a GPE to a particular type. It will
12788 especially useful for the drivers for the button devices mentioned above.
12790 Completed restructuring of the ACPI CA initialization sequence so that
12791 default operation region handlers are installed before GPEs are
12793 and the _PRW methods are executed. This will prevent errors when the
12795 methods attempt to access system memory or I/O space.
12797 GPE enable/disable no longer reads the GPE enable register. We now keep
12799 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12800 thus no longer depend on the hardware to maintain these bits.
12802 Always clear the wake status and fixed/GPE status bits before sleep, even
12805 Improved the AML debugger output for displaying the GPE blocks and their
12808 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12812 Fixed a problem where the physical address was incorrectly calculated
12814 the Load() operator was used to directly load from an Operation Region
12816 loading from a Field object.) Also added check for minimum table length
12820 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12823 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12824 consistency with the other fields returned.
12826 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12827 structure for each GPE in the system, so the size of this structure is
12830 CPU stack requirement reduction: Cleaned up the method execution and
12832 evaluation paths so that now a parameter structure is passed, instead of
12833 copying the various method parameters over and over again.
12835 In evregion.c: Correctly exit and reenter the interpreter region if and
12836 only if dispatching an operation region request to a user-installed
12838 Do not exit/reenter when dispatching to a default handler (e.g., default
12839 system memory or I/O handlers)
12842 Notes for updating drivers for the new GPE support. The following
12844 must be made to ACPI-related device drivers that are attached to one or
12846 GPEs: (This information will be added to the ACPI CA Programmer
12849 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
12851 explicitly call AcpiEnableGpe.
12852 2) There is a new interface called AcpiSetGpeType. This should be called
12853 before enabling the GPE. Also, this interface will automatically disable
12854 the GPE if it is currently enabled.
12855 3) AcpiEnableGpe no longer supports a GPE type flag.
12857 Specific drivers that must be changed:
12859 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
12860 AeGpeHandler, NULL);
12861 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
12862 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
12864 2) Button Drivers (Power, Lid, Sleep):
12865 Run _PRW method under parent device
12866 If _PRW exists: /* This is a control-method button */
12867 Extract GPE number and possibly GpeDevice
12868 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
12869 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
12871 For all other devices that have _PRWs, we automatically set the GPE type
12873 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
12875 must be done on a selective basis, usually requiring some kind of user
12877 to allow the user to pick the wake devices.
12880 Code and Data Size: Current and previous core subsystem library sizes are
12881 shown below. These are the code and data sizes for the acpica.lib
12883 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12884 any ACPI driver or OSPM code. The debug version of the code includes the
12885 debug output trace mechanism and has a much larger code and data size.
12887 that these values will vary depending on the efficiency of the compiler
12889 the compiler options used during generation.
12892 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12893 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12896 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12897 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12901 ----------------------------------------
12902 02 April 2004. Summary of changes for version 20040402:
12904 1) ACPI CA Core Subsystem:
12906 Fixed an interpreter problem where an indirect store through an ArgX
12907 parameter was incorrectly applying the "implicit conversion rules" during
12908 the store. From the ACPI specification: "If the target is a method local
12910 argument (LocalX or ArgX), no conversion is performed and the result is
12911 stored directly to the target". The new behavior is to disable implicit
12912 conversion during ALL stores to an ArgX.
12914 Changed the behavior of the _PRW method scan to ignore any and all errors
12915 returned by a given _PRW. This prevents the scan from aborting from the
12916 failure of any single _PRW.
12918 Moved the runtime configuration parameters from the global init procedure
12920 static variables in acglobal.h. This will allow the host to override the
12921 default values easily.
12923 Code and Data Size: Current and previous core subsystem library sizes are
12924 shown below. These are the code and data sizes for the acpica.lib
12926 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12927 any ACPI driver or OSPM code. The debug version of the code includes the
12928 debug output trace mechanism and has a much larger code and data size.
12930 that these values will vary depending on the efficiency of the compiler
12932 the compiler options used during generation.
12935 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12936 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12938 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12939 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12942 2) iASL Compiler/Disassembler:
12944 iASL now fully disassembles SSDTs. However, External() statements are
12946 generated automatically for unresolved symbols at this time. This is a
12947 planned feature for future implementation.
12949 Fixed a scoping problem in the disassembler that occurs when the type of
12951 target of a Scope() operator is overridden. This problem caused an
12952 incorrectly nested internal namespace to be constructed.
12954 Any warnings or errors that are emitted during disassembly are now
12956 out automatically so that the resulting file can be recompiled without
12960 ----------------------------------------
12961 26 March 2004. Summary of changes for version 20040326:
12963 1) ACPI CA Core Subsystem:
12965 Implemented support for "wake" GPEs via interaction between GPEs and the
12966 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12967 identified as a WAKE GPE and by default will no longer be enabled at
12968 runtime. Previously, we were blindly enabling all GPEs with a
12970 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12972 believe this has been the cause of thousands of "spurious" GPEs on some
12975 This new GPE behavior is can be reverted to the original behavior (enable
12976 ALL GPEs at runtime) via a runtime flag.
12978 Fixed a problem where aliased control methods could not access objects
12979 properly. The proper scope within the namespace was not initialized
12980 (transferred to the target of the aliased method) before executing the
12983 Fixed a potential race condition on internal object deletion on the
12985 object in AcpiEvaluateObject.
12987 Integrated a fix for resource descriptors where both _MEM and _MTP were
12988 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12989 wide, 0x0F instead of 0x03.)
12991 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12994 fault in some cases.
12996 Updated Notify() values for debug statements in evmisc.c
12998 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13000 Code and Data Size: Current and previous core subsystem library sizes are
13001 shown below. These are the code and data sizes for the acpica.lib
13003 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13004 any ACPI driver or OSPM code. The debug version of the code includes the
13005 debug output trace mechanism and has a much larger code and data size.
13007 that these values will vary depending on the efficiency of the compiler
13009 the compiler options used during generation.
13013 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13014 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13016 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13017 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13019 ----------------------------------------
13020 11 March 2004. Summary of changes for version 20040311:
13022 1) ACPI CA Core Subsystem:
13024 Fixed a problem where errors occurring during the parse phase of control
13025 method execution did not abort cleanly. For example, objects created and
13026 installed in the namespace were not deleted. This caused all subsequent
13027 invocations of the method to return the AE_ALREADY_EXISTS exception.
13029 Implemented a mechanism to force a control method to "Serialized"
13031 if the method attempts to create namespace objects. (The root of the
13032 AE_ALREADY_EXISTS problem.)
13034 Implemented support for the predefined _OSI "internal" control method.
13035 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13037 "Windows 2001.1", and can be easily upgraded for new strings as
13039 This feature will allow "other" operating systems to execute the fully
13040 tested, "Windows" code path through the ASL code
13042 Global Lock Support: Now allows multiple acquires and releases with any
13043 internal thread. Removed concept of "owning thread" for this special
13046 Fixed two functions that were inappropriately declaring large objects on
13048 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13050 method execution considerably.
13052 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13053 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13055 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13056 defined on the machine.
13058 Implemented two runtime options: One to force all control method
13060 to "Serialized" to mimic Windows behavior, another to disable _OSI
13062 if it causes problems on a given machine.
13064 Code and Data Size: Current and previous core subsystem library sizes are
13065 shown below. These are the code and data sizes for the acpica.lib
13067 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13068 any ACPI driver or OSPM code. The debug version of the code includes the
13069 debug output trace mechanism and has a much larger code and data size.
13071 that these values will vary depending on the efficiency of the compiler
13073 the compiler options used during generation.
13076 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13077 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13079 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13080 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13082 2) iASL Compiler/Disassembler:
13084 Fixed an array size problem for FreeBSD that would cause the compiler to
13087 ----------------------------------------
13088 20 February 2004. Summary of changes for version 20040220:
13091 1) ACPI CA Core Subsystem:
13093 Implemented execution of _SxD methods for Device objects in the
13094 GetObjectInfo interface.
13096 Fixed calls to _SST method to pass the correct arguments.
13098 Added a call to _SST on wake to restore to "working" state.
13100 Check for End-Of-Buffer failure case in the WalkResources interface.
13102 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13103 structures to the beginning of the file.
13105 After wake, clear GPE status register(s) before enabling GPEs.
13107 After wake, clear/enable power button. (Perhaps we should clear/enable
13109 fixed events upon wake.)
13111 Fixed a couple of possible memory leaks in the Namespace manager.
13113 Integrated latest acnetbsd.h file.
13115 ----------------------------------------
13116 11 February 2004. Summary of changes for version 20040211:
13119 1) ACPI CA Core Subsystem:
13121 Completed investigation and implementation of the call-by-reference
13122 mechanism for control method arguments.
13124 Fixed a problem where a store of an object into an indexed package could
13125 fail if the store occurs within a different method than the method that
13126 created the package.
13128 Fixed a problem where the ToDecimal operator could return incorrect
13131 Fixed a problem where the CopyObject operator could fail on some of the
13133 obscure objects (e.g., Reference objects.)
13135 Improved the output of the Debug object to display buffer, package, and
13138 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13140 the expected result.
13142 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13143 ACPI_AML_INTERNAL exception.
13145 Integrated latest version of acfreebsd.h
13147 ----------------------------------------
13148 16 January 2004. Summary of changes for version 20040116:
13150 The purpose of this release is primarily to update the copyright years in
13151 each module, thus causing a huge number of diffs. There are a few small
13152 functional changes, however.
13154 1) ACPI CA Core Subsystem:
13156 Improved error messages when there is a problem finding one or more of
13158 required base ACPI tables
13160 Reintroduced the definition of APIC_HEADER in actbl.h
13162 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13164 Removed extraneous reference to NewObj in dsmthdat.c
13168 Fixed a problem introduced in December that disabled the correct
13170 of Resource Templates
13173 ----------------------------------------
13174 03 December 2003. Summary of changes for version 20031203:
13176 1) ACPI CA Core Subsystem:
13178 Changed the initialization of Operation Regions during subsystem
13179 init to perform two entire walks of the ACPI namespace; The first
13180 to initialize the regions themselves, the second to execute the
13181 _REG methods. This fixed some interdependencies across _REG
13182 methods found on some machines.
13184 Fixed a problem where a Store(Local0, Local1) could simply update
13185 the object reference count, and not create a new copy of the
13186 object if the Local1 is uninitialized.
13188 Implemented support for the _SST reserved method during sleep
13191 Implemented support to clear the SLP_TYP and SLP_EN bits when
13192 waking up, this is apparently required by some machines.
13194 When sleeping, clear the wake status only if SleepState is not S5.
13196 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13197 pointer arithmetic advanced a string pointer too far.
13199 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13200 could be returned if the requested table has not been loaded.
13202 Within the support for IRQ resources, restructured the handling of
13203 the active and edge/level bits.
13205 Fixed a few problems in AcpiPsxExecute() where memory could be
13206 leaked under certain error conditions.
13208 Improved error messages for the cases where the ACPI mode could
13211 Code and Data Size: Current and previous core subsystem library
13212 sizes are shown below. These are the code and data sizes for the
13213 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13214 these values do not include any ACPI driver or OSPM code. The
13215 debug version of the code includes the debug output trace
13216 mechanism and has a much larger code and data size. Note that
13217 these values will vary depending on the efficiency of the compiler
13218 and the compiler options used during generation.
13220 Previous Release (20031029):
13221 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13222 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13224 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13225 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13227 2) iASL Compiler/Disassembler:
13229 Implemented a fix for the iASL disassembler where a bad index was
13230 generated. This was most noticeable on 64-bit platforms
13233 ----------------------------------------
13234 29 October 2003. Summary of changes for version 20031029:
13236 1) ACPI CA Core Subsystem:
13239 Fixed a problem where a level-triggered GPE with an associated
13240 _Lxx control method was incorrectly cleared twice.
13242 Fixed a problem with the Field support code where an access can
13243 occur beyond the end-of-region if the field is non-aligned but
13244 extends to the very end of the parent region (resulted in an
13245 AE_AML_REGION_LIMIT exception.)
13247 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13248 would not get invoked on an RTC event. The RTC event bitmasks for
13249 the PM1 registers were not being initialized properly.
13251 Implemented support for executing _STA and _INI methods for
13252 Processor objects. Although this is currently not part of the
13253 ACPI specification, there is existing ASL code that depends on the
13254 init-time execution of these methods.
13256 Implemented and deployed a GetDescriptorName function to decode
13257 the various types of internal descriptors. Guards against null
13258 descriptors during debug output also.
13260 Implemented and deployed a GetNodeName function to extract the 4-
13261 character namespace node name. This function simplifies the debug
13262 and error output, as well as guarding against null pointers during
13265 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13266 simplify the debug and error output of 64-bit integers. This
13267 macro replaces the HIDWORD and LODWORD macros for dumping these
13270 Updated the implementation of the Stall() operator to only call
13271 AcpiOsStall(), and also return an error if the operand is larger
13272 than 255. This preserves the required behavior of not
13273 relinquishing the processor, as would happen if AcpiOsSleep() was
13274 called for "long stalls".
13276 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13277 initialized are now treated as NOOPs.
13279 Cleaned up a handful of warnings during 64-bit generation.
13281 Fixed a reported error where and incorrect GPE number was passed
13282 to the GPE dispatch handler. This value is only used for error
13283 output, however. Used this opportunity to clean up and streamline
13284 the GPE dispatch code.
13286 Code and Data Size: Current and previous core subsystem library
13287 sizes are shown below. These are the code and data sizes for the
13288 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13289 these values do not include any ACPI driver or OSPM code. The
13291 debug version of the code includes the debug output trace
13292 mechanism and has a much larger code and data size. Note that
13293 these values will vary depending on the efficiency of the compiler
13294 and the compiler options used during generation.
13296 Previous Release (20031002):
13297 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13298 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13300 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13301 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13304 2) iASL Compiler/Disassembler:
13306 Updated the iASL compiler to return an error if the operand to the
13307 Stall() operator is larger than 255.
13310 ----------------------------------------
13311 02 October 2003. Summary of changes for version 20031002:
13314 1) ACPI CA Core Subsystem:
13316 Fixed a problem with Index Fields where the index was not
13317 incremented for fields that require multiple writes to the
13318 index/data registers (Fields that are wider than the data
13321 Fixed a problem with all Field objects where a write could go
13322 beyond the end-of-field if the field was larger than the access
13323 granularity and therefore required multiple writes to complete the
13324 request. An extra write beyond the end of the field could happen
13327 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13328 would incorrectly be returned if the width of the Data Register
13329 was larger than the specified field access width.
13331 Completed fixes for LoadTable() and Unload() and verified their
13332 operation. Implemented full support for the "DdbHandle" object
13333 throughout the ACPI CA subsystem.
13335 Implemented full support for the MADT and ECDT tables in the ACPI
13336 CA header files. Even though these tables are not directly
13337 consumed by ACPI CA, the header definitions are useful for ACPI
13340 Integrated resource descriptor fixes posted to the Linux ACPI
13341 list. This included checks for minimum descriptor length, and
13342 support for trailing NULL strings within descriptors that have
13343 optional string elements.
13345 Code and Data Size: Current and previous core subsystem library
13346 sizes are shown below. These are the code and data sizes for the
13347 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13348 these values do not include any ACPI driver or OSPM code. The
13349 debug version of the code includes the debug output trace
13350 mechanism and has a much larger code and data size. Note that
13351 these values will vary depending on the efficiency of the compiler
13352 and the compiler options used during generation.
13354 Previous Release (20030918):
13355 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13356 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13358 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13359 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13364 Implemented detection of non-ASCII characters within the input
13365 source ASL file. This catches attempts to compile binary (AML)
13366 files early in the compile, with an informative error message.
13368 Fixed a problem where the disassembler would fault if the output
13369 filename could not be generated or if the output file could not be
13372 ----------------------------------------
13373 18 September 2003. Summary of changes for version 20030918:
13376 1) ACPI CA Core Subsystem:
13378 Found and fixed a longstanding problem with the late execution of
13379 the various deferred AML opcodes (such as Operation Regions,
13380 Buffer Fields, Buffers, and Packages). If the name string
13381 specified for the name of the new object placed the object in a
13382 scope other than the current scope, the initialization/execution
13383 of the opcode failed. The solution to this problem was to
13384 implement a mechanism where the late execution of such opcodes
13385 does not attempt to lookup/create the name a second time in an
13386 incorrect scope. This fixes the "region size computed
13387 incorrectly" problem.
13389 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13390 Global Lock AE_BAD_PARAMETER error.
13392 Fixed several 64-bit issues with prototypes, casting and data
13395 Removed duplicate prototype from acdisasm.h
13397 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13399 Code and Data Size: Current and previous core subsystem library
13400 sizes are shown below. These are the code and data sizes for the
13401 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13402 these values do not include any ACPI driver or OSPM code. The
13403 debug version of the code includes the debug output trace
13404 mechanism and has a much larger code and data size. Note that
13405 these values will vary depending on the efficiency of the compiler
13406 and the compiler options used during generation.
13410 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13411 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13413 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13414 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13419 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13420 correct sleep time in seconds.
13422 ----------------------------------------
13423 14 July 2003. Summary of changes for version 20030619:
13425 1) ACPI CA Core Subsystem:
13427 Parse SSDTs in order discovered, as opposed to reverse order
13430 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13437 Dynamically allocate SDT list (suggested by Andi Kleen)
13439 proc function return value cleanups (Andi Kleen)
13441 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13443 Make it so acpismp=force works (reported by Andrew Morton)
13446 ----------------------------------------
13447 19 June 2003. Summary of changes for version 20030619:
13449 1) ACPI CA Core Subsystem:
13451 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13453 Do not acquire a semaphore in the S5 shutdown path.
13455 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13457 Fix sleep/stall code reversal. (Andi Kleen)
13459 Revert a change having to do with control method calling
13464 acpiphp update (Takayoshi Kochi)
13466 Export acpi_disabled for sonypi (Stelian Pop)
13468 Mention acpismp=force in config help
13470 Re-add acpitable.c and acpismp=force. This improves backwards
13472 compatibility and also cleans up the code to a significant degree.
13474 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13476 ----------------------------------------
13477 22 May 2003. Summary of changes for version 20030522:
13479 1) ACPI CA Core Subsystem:
13481 Found and fixed a reported problem where an AE_NOT_FOUND error
13482 occurred occasionally during _BST evaluation. This turned out to
13483 be an Owner ID allocation issue where a called method did not get
13484 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13485 ID UINT16 would wraparound so that the ID would be the same as the
13486 caller's and the called method would delete the caller's
13489 Implemented extended error reporting for control methods that are
13490 aborted due to a run-time exception. Output includes the exact
13491 AML instruction that caused the method abort, a dump of the method
13492 locals and arguments at the time of the abort, and a trace of all
13493 nested control method calls.
13495 Modified the interpreter to allow the creation of buffers of zero
13496 length from the AML code. Implemented new code to ensure that no
13497 attempt is made to actually allocate a memory buffer (of length
13498 zero) - instead, a simple buffer object with a NULL buffer pointer
13499 and length zero is created. A warning is no longer issued when
13500 the AML attempts to create a zero-length buffer.
13502 Implemented a workaround for the "leading asterisk issue" in
13503 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13504 asterisk is automatically removed if present in any HID, UID, or
13505 CID strings. The iASL compiler will still flag this asterisk as
13508 Implemented full support for _CID methods that return a package of
13509 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13510 now additionally returns a device _CID list if present. This
13511 required a change to the external interface in order to pass an
13512 ACPI_BUFFER object as a parameter since the _CID list is of
13515 Fixed a problem with the new AE_SAME_HANDLER exception where
13516 handler initialization code did not know about this exception.
13518 Code and Data Size: Current and previous core subsystem library
13519 sizes are shown below. These are the code and data sizes for the
13520 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13521 these values do not include any ACPI driver or OSPM code. The
13522 debug version of the code includes the debug output trace
13523 mechanism and has a much larger code and data size. Note that
13524 these values will vary depending on the efficiency of the compiler
13525 and the compiler options used during generation.
13527 Previous Release (20030509):
13528 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13529 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13531 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13532 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13537 Fixed a bug in which we would reinitialize the ACPI interrupt
13538 after it was already working, thus disabling all ACPI and the IRQs
13539 for any other device sharing the interrupt. (Thanks to Stian
13542 Toshiba driver update (John Belmonte)
13544 Return only 0 or 1 for our interrupt handler status (Andrew
13550 Fixed a reported problem where multiple (nested) ElseIf()
13551 statements were not handled correctly by the compiler, resulting
13552 in incorrect warnings and incorrect AML code. This was a problem
13553 in both the ASL parser and the code generator.
13558 Added changes to existing interfaces, new exception codes, and new
13559 text concerning reference count object management versus garbage
13562 ----------------------------------------
13563 09 May 2003. Summary of changes for version 20030509.
13566 1) ACPI CA Core Subsystem:
13568 Changed the subsystem initialization sequence to hold off
13569 installation of address space handlers until the hardware has been
13570 initialized and the system has entered ACPI mode. This is because
13571 the installation of space handlers can cause _REG methods to be
13572 run. Previously, the _REG methods could potentially be run before
13573 ACPI mode was enabled.
13575 Fixed some memory leak issues related to address space handler and
13576 notify handler installation. There were some problems with the
13577 reference count mechanism caused by the fact that the handler
13578 objects are shared across several namespace objects.
13580 Fixed a reported problem where reference counts within the
13581 namespace were not properly updated when named objects created by
13582 method execution were deleted.
13584 Fixed a reported problem where multiple SSDTs caused a deletion
13585 issue during subsystem termination. Restructured the table data
13586 structures to simplify the linked lists and the related code.
13588 Fixed a problem where the table ID associated with secondary
13589 tables (SSDTs) was not being propagated into the namespace objects
13590 created by those tables. This would only present a problem for
13591 tables that are unloaded at run-time, however.
13593 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13594 type as the length parameter (instead of UINT32).
13596 Solved a long-standing problem where an ALREADY_EXISTS error
13597 appears on various systems. This problem could happen when there
13598 are multiple PCI_Config operation regions under a single PCI root
13599 bus. This doesn't happen very frequently, but there are some
13600 systems that do this in the ASL.
13602 Fixed a reported problem where the internal DeleteNode function
13603 was incorrectly handling the case where a namespace node was the
13604 first in the parent's child list, and had additional peers (not
13605 the only child, but first in the list of children.)
13607 Code and Data Size: Current core subsystem library sizes are shown
13608 below. These are the code and data sizes for the acpica.lib
13609 produced by the Microsoft Visual C++ 6.0 compiler, and these
13610 values do not include any ACPI driver or OSPM code. The debug
13611 version of the code includes the debug output trace mechanism and
13612 has a much larger code and data size. Note that these values will
13613 vary depending on the efficiency of the compiler and the compiler
13614 options used during generation.
13617 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13618 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13620 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13621 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13626 Allow ":" in OS override string (Ducrot Bruno)
13628 Kobject fix (Greg KH)
13631 3 iASL Compiler/Disassembler:
13633 Fixed a problem in the generation of the C source code files (AML
13634 is emitted in C source statements for BIOS inclusion) where the
13635 Ascii dump that appears within a C comment at the end of each line
13636 could cause a compile time error if the AML sequence happens to
13637 have an open comment or close comment sequence embedded.
13640 ----------------------------------------
13641 24 April 2003. Summary of changes for version 20030424.
13644 1) ACPI CA Core Subsystem:
13646 Support for big-endian systems has been implemented. Most of the
13647 support has been invisibly added behind big-endian versions of the
13648 ACPI_MOVE_* macros.
13650 Fixed a problem in AcpiHwDisableGpeBlock() and
13651 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
13652 low level hardware write routine. The offset parameter was
13653 actually eliminated from the low level read/write routines because
13654 they had become obsolete.
13656 Fixed a problem where a handler object was deleted twice during
13657 the removal of a fixed event handler.
13662 A fix for SMP systems with link devices was contributed by
13666 (2.5) Return whether we handled the interrupt in our IRQ handler.
13667 (Linux ISRs no longer return void, so we can propagate the handler
13668 return value from the ACPI CA core back to the OS.)
13674 The ACPI CA Programmer Reference has been updated to reflect new
13675 interfaces and changes to existing interfaces.
13677 ----------------------------------------
13678 28 March 2003. Summary of changes for version 20030328.
13680 1) ACPI CA Core Subsystem:
13682 The GPE Block Device support has been completed. New interfaces
13683 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
13684 interfaces (enable, disable, clear, getstatus) have been split
13685 into separate interfaces for Fixed Events and General Purpose
13686 Events (GPEs) in order to support GPE Block Devices properly.
13688 Fixed a problem where the error message "Failed to acquire
13689 semaphore" would appear during operations on the embedded
13692 Code and Data Size: Current core subsystem library sizes are shown
13693 below. These are the code and data sizes for the acpica.lib
13694 produced by the Microsoft Visual C++ 6.0 compiler, and these
13695 values do not include any ACPI driver or OSPM code. The debug
13696 version of the code includes the debug output trace mechanism and
13697 has a much larger code and data size. Note that these values will
13698 vary depending on the efficiency of the compiler and the compiler
13699 options used during generation.
13702 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13703 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13705 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13706 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13709 ----------------------------------------
13710 28 February 2003. Summary of changes for version 20030228.
13713 1) ACPI CA Core Subsystem:
13715 The GPE handling and dispatch code has been completely overhauled
13716 in preparation for support of GPE Block Devices (ID ACPI0006).
13717 This affects internal data structures and code only; there should
13718 be no differences visible externally. One new file has been
13721 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13722 fields that are used to determine the GPE block lengths. The
13723 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13724 structures are ignored. This is per the ACPI specification but it
13725 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13726 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13728 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13729 register to look at the SCI_EN bit. On some machines, this read
13730 causes an SMI event and greatly slows down SCI events. (This may
13731 in fact be the cause of slow battery status response on some
13734 Fixed a problem where a store of a NULL string to a package object
13735 could cause the premature deletion of the object. This was seen
13736 during execution of the battery _BIF method on some systems,
13737 resulting in no battery data being returned.
13739 Added AcpiWalkResources interface to simplify parsing of resource
13742 Code and Data Size: Current core subsystem library sizes are shown
13743 below. These are the code and data sizes for the acpica.lib
13744 produced by the Microsoft Visual C++ 6.0 compiler, and these
13745 values do not include any ACPI driver or OSPM code. The debug
13746 version of the code includes the debug output trace mechanism and
13747 has a much larger code and data size. Note that these values will
13748 vary depending on the efficiency of the compiler and the compiler
13749 options used during generation.
13752 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13753 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13755 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13756 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13761 S3 fixes (Ole Rohne)
13763 Update ACPI PHP driver with to use new acpi_walk_resource API
13766 Add S4BIOS support (Pavel Machek)
13768 Map in entire table before performing checksum (John Stultz)
13770 Expand the mem= cmdline to allow the specification of reserved and
13771 ACPI DATA blocks (Pavel Machek)
13773 Never use ACPI on VISWS
13775 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13777 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13778 causing us to think that some systems support C2 when they really
13781 Do not count processor objects for non-present CPUs (Thanks to
13787 Fixed a problem where ASL include files could not be found and
13790 Added support for the _PDC reserved name.
13793 ----------------------------------------
13794 22 January 2003. Summary of changes for version 20030122.
13797 1) ACPI CA Core Subsystem:
13799 Added a check for constructs of the form: Store (Local0, Local0)
13800 where Local0 is not initialized. Apparently, some BIOS
13801 programmers believe that this is a NOOP. Since this store doesn't
13802 do anything anyway, the new prototype behavior will ignore this
13803 error. This is a case where we can relax the strict checking in
13804 the interpreter in the name of compatibility.
13809 The AcpiSrc Source Conversion Utility has been released with the
13810 Linux package for the first time. This is the utility that is
13811 used to convert the ACPI CA base source code to the Linux version.
13813 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13815 (Both) Move more headers to include/acpi, and delete an unused
13818 (Both) Move drivers/acpi/include directory to include/acpi
13820 (Both) Boot functions don't use cmdline, so don't pass it around
13822 (Both) Remove include of unused header (Adrian Bunk)
13824 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13826 former now also includes the latter, acpiphp.h only needs the one,
13829 (2.5) Make it possible to select method of bios restoring after S3
13830 resume. [=> no more ugly ifdefs] (Pavel Machek)
13832 (2.5) Make proc write interfaces work (Pavel Machek)
13834 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13836 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13837 (Dominik Brodowski)
13839 (2.4) S4BIOS support (Ducrot Bruno)
13841 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13847 Added support to disassemble SSDT and PSDTs.
13849 Implemented support to obtain SSDTs from the Windows registry if
13853 ----------------------------------------
13854 09 January 2003. Summary of changes for version 20030109.
13856 1) ACPI CA Core Subsystem:
13858 Changed the behavior of the internal Buffer-to-String conversion
13859 function. The current ACPI specification states that the contents
13860 of the buffer are "converted to a string of two-character
13861 hexadecimal numbers, each separated by a space". Unfortunately,
13862 this definition is not backwards compatible with existing ACPI 1.0
13863 implementations (although the behavior was not defined in the ACPI
13864 1.0 specification). The new behavior simply copies data from the
13865 buffer to the string until a null character is found or the end of
13866 the buffer is reached. The new String object is always null
13867 terminated. This problem was seen during the generation of _BIF
13868 battery data where incorrect strings were returned for battery
13869 type, etc. This will also require an errata to the ACPI
13872 Renamed all instances of NATIVE_UINT and NATIVE_INT to
13873 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
13875 Copyright in all module headers (both Linux and non-Linux) has be
13878 Code and Data Size: Current core subsystem library sizes are shown
13879 below. These are the code and data sizes for the acpica.lib
13880 produced by the Microsoft Visual C++ 6.0 compiler, and these
13881 values do not include any ACPI driver or OSPM code. The debug
13882 version of the code includes the debug output trace mechanism and
13883 has a much larger code and data size. Note that these values will
13884 vary depending on the efficiency of the compiler and the compiler
13885 options used during generation.
13888 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13889 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13891 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13892 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13897 Fixed an oops on module insertion/removal (Matthew Tippett)
13899 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13901 (2.5) Replace pr_debug (Randy Dunlap)
13903 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13905 (Both) Eliminate spawning of thread from timer callback, in favor
13908 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13910 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13912 (Both) Add missing statics to button.c (Pavel Machek)
13914 Several changes have been made to the source code translation
13915 utility that generates the Linux Code in order to make the code
13918 All typedefs on structs and unions have been removed in keeping
13919 with the Linux coding style.
13921 Removed the non-Linux SourceSafe module revision number from each
13924 Completed major overhaul of symbols to be lowercased for linux.
13925 Doubled the number of symbols that are lowercased.
13927 Fixed a problem where identifiers within procedure headers and
13928 within quotes were not fully lower cased (they were left with a
13931 Some C macros whose only purpose is to allow the generation of 16-
13932 bit code are now completely removed in the Linux code, increasing
13933 readability and maintainability.
13935 ----------------------------------------
13937 12 December 2002. Summary of changes for version 20021212.
13940 1) ACPI CA Core Subsystem:
13942 Fixed a problem where the creation of a zero-length AML Buffer
13943 would cause a fault.
13945 Fixed a problem where a Buffer object that pointed to a static AML
13946 buffer (in an ACPI table) could inadvertently be deleted, causing
13949 Fixed a problem where a user buffer (passed in to the external
13950 ACPI CA interfaces) could be overwritten if the buffer was too
13951 small to complete the operation, causing memory corruption.
13953 Fixed a problem in the Buffer-to-String conversion code where a
13954 string of length one was always returned, regardless of the size
13955 of the input Buffer object.
13957 Removed the NATIVE_CHAR data type across the entire source due to
13958 lack of need and lack of consistent use.
13960 Code and Data Size: Current core subsystem library sizes are shown
13961 below. These are the code and data sizes for the acpica.lib
13962 produced by the Microsoft Visual C++ 6.0 compiler, and these
13963 values do not include any ACPI driver or OSPM code. The debug
13964 version of the code includes the debug output trace mechanism and
13965 has a much larger code and data size. Note that these values will
13966 vary depending on the efficiency of the compiler and the compiler
13967 options used during generation.
13970 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13971 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13973 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13974 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13977 ----------------------------------------
13978 05 December 2002. Summary of changes for version 20021205.
13980 1) ACPI CA Core Subsystem:
13982 Fixed a problem where a store to a String or Buffer object could
13983 cause corruption of the DSDT if the object type being stored was
13984 the same as the target object type and the length of the object
13985 being stored was equal to or smaller than the original (existing)
13986 target object. This was seen to cause corruption of battery _BIF
13987 buffers if the _BIF method modified the buffer on the fly.
13989 Fixed a problem where an internal error was generated if a control
13990 method invocation was used in an OperationRegion, Buffer, or
13991 Package declaration. This was caused by the deferred parsing of
13992 the control method and thus the deferred creation of the internal
13993 method object. The solution to this problem was to create the
13994 internal method object at the moment the method is encountered in
13995 the first pass - so that subsequent references to the method will
13996 able to obtain the required parameter count and thus properly
13997 parse the method invocation. This problem presented itself as an
13998 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14000 Fixed a problem where the internal String object copy routine did
14001 not always allocate sufficient memory for the target String object
14002 and caused memory corruption. This problem was seen to cause
14003 "Allocation already present in list!" errors as memory allocation
14006 Implemented a new function for the evaluation of namespace objects
14007 that allows the specification of the allowable return object
14008 types. This simplifies a lot of code that checks for a return
14009 object of one or more specific objects returned from the
14010 evaluation (such as _STA, etc.) This may become and external
14011 function if it would be useful to ACPI-related drivers.
14013 Completed another round of prefixing #defines with "ACPI_" for
14016 Completed additional code restructuring to allow more modular
14017 linking for iASL compiler and AcpiExec. Several files were split
14018 creating new files. New files: nsparse.c dsinit.c evgpe.c
14020 Implemented an abort mechanism to terminate an executing control
14021 method via the AML debugger. This feature is useful for debugging
14022 control methods that depend (wait) for specific hardware
14025 Code and Data Size: Current core subsystem library sizes are shown
14026 below. These are the code and data sizes for the acpica.lib
14027 produced by the Microsoft Visual C++ 6.0 compiler, and these
14028 values do not include any ACPI driver or OSPM code. The debug
14029 version of the code includes the debug output trace mechanism and
14030 has a much larger code and data size. Note that these values will
14031 vary depending on the efficiency of the compiler and the compiler
14032 options used during generation.
14035 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14036 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14038 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14039 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14042 2) iASL Compiler/Disassembler
14044 Fixed a compiler code generation problem for "Interrupt" Resource
14045 Descriptors. If specified in the ASL, the optional "Resource
14046 Source Index" and "Resource Source" fields were not inserted into
14047 the correct location within the AML resource descriptor, creating
14048 an invalid descriptor.
14050 Fixed a disassembler problem for "Interrupt" resource descriptors.
14051 The optional "Resource Source Index" and "Resource Source" fields
14055 ----------------------------------------
14056 22 November 2002. Summary of changes for version 20021122.
14059 1) ACPI CA Core Subsystem:
14061 Fixed a reported problem where an object stored to a Method Local
14062 or Arg was not copied to a new object during the store - the
14063 object pointer was simply copied to the Local/Arg. This caused
14064 all subsequent operations on the Local/Arg to also affect the
14065 original source of the store operation.
14067 Fixed a problem where a store operation to a Method Local or Arg
14068 was not completed properly if the Local/Arg contained a reference
14069 (from RefOf) to a named field. The general-purpose store-to-
14070 namespace-node code is now used so that this case is handled
14073 Fixed a problem where the internal object copy routine would cause
14074 a protection fault if the object being copied was a Package and
14075 contained either 1) a NULL package element or 2) a nested sub-
14078 Fixed a problem with the GPE initialization that resulted from an
14079 ambiguity in the ACPI specification. One section of the
14080 specification states that both the address and length of the GPE
14081 block must be zero if the block is not supported. Another section
14082 implies that only the address need be zero if the block is not
14083 supported. The code has been changed so that both the address and
14084 the length must be non-zero to indicate a valid GPE block (i.e.,
14085 if either the address or the length is zero, the GPE block is
14088 Code and Data Size: Current core subsystem library sizes are shown
14089 below. These are the code and data sizes for the acpica.lib
14090 produced by the Microsoft Visual C++ 6.0 compiler, and these
14091 values do not include any ACPI driver or OSPM code. The debug
14092 version of the code includes the debug output trace mechanism and
14093 has a much larger code and data size. Note that these values will
14094 vary depending on the efficiency of the compiler and the compiler
14095 options used during generation.
14098 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14099 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14101 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14102 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14107 Cleaned up EC driver. Exported an external EC read/write
14108 interface. By going through this, other drivers (most notably
14109 sonypi) will be able to serialize access to the EC.
14112 3) iASL Compiler/Disassembler
14114 Implemented support to optionally generate include files for both
14115 ASM and C (the -i switch). This simplifies BIOS development by
14116 automatically creating include files that contain external
14117 declarations for the symbols that are created within the
14119 (optionally generated) ASM and C AML source files.
14122 ----------------------------------------
14123 15 November 2002. Summary of changes for version 20021115.
14125 1) ACPI CA Core Subsystem:
14127 Fixed a memory leak problem where an error during resolution of
14129 method arguments during a method invocation from another method
14130 failed to cleanup properly by deleting all successfully resolved
14133 Fixed a problem where the target of the Index() operator was not
14134 correctly constructed if the source object was a package. This
14135 problem has not been detected because the use of a target operand
14136 with Index() is very rare.
14138 Fixed a problem with the Index() operator where an attempt was
14139 made to delete the operand objects twice.
14141 Fixed a problem where an attempt was made to delete an operand
14142 twice during execution of the CondRefOf() operator if the target
14145 Implemented the first of perhaps several internal create object
14146 functions that create and initialize a specific object type. This
14147 consolidates duplicated code wherever the object is created, thus
14148 shrinking the size of the subsystem.
14150 Implemented improved debug/error messages for errors that occur
14151 during nested method invocations. All executing method pathnames
14152 are displayed (with the error) as the call stack is unwound - thus
14155 Fixed a problem introduced in the 10/02 release that caused
14156 premature deletion of a buffer object if a buffer was used as an
14157 ASL operand where an integer operand is required (Thus causing an
14158 implicit object conversion from Buffer to Integer.) The change in
14159 the 10/02 release was attempting to fix a memory leak (albeit
14162 Code and Data Size: Current core subsystem library sizes are shown
14163 below. These are the code and data sizes for the acpica.lib
14164 produced by the Microsoft Visual C++ 6.0 compiler, and these
14165 values do not include any ACPI driver or OSPM code. The debug
14166 version of the code includes the debug output trace mechanism and
14167 has a much larger code and data size. Note that these values will
14168 vary depending on the efficiency of the compiler and the compiler
14169 options used during generation.
14172 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14173 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14175 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14176 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14181 Changed the implementation of the ACPI semaphores to use down()
14182 instead of down_interruptable(). It is important that the
14183 execution of ACPI control methods not be interrupted by signals.
14184 Methods must run to completion, or the system may be left in an
14185 unknown/unstable state.
14187 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14191 3) iASL Compiler/Disassembler
14194 Changed the default location of output files. All output files
14195 are now placed in the current directory by default instead of in
14196 the directory of the source file. This change may affect some
14197 existing makefiles, but it brings the behavior of the compiler in
14198 line with other similar tools. The location of the output files
14199 can be overridden with the -p command line switch.
14202 ----------------------------------------
14203 11 November 2002. Summary of changes for version 20021111.
14206 0) ACPI Specification 2.0B is released and is now available at:
14207 http://www.acpi.info/index.html
14210 1) ACPI CA Core Subsystem:
14212 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14213 This includes the early detection and handoff of the request to
14214 the SMBus region handler (avoiding all of the complex field
14215 support code), and support for the bidirectional return packet
14216 from an SMBus write operation. This paves the way for the
14217 development of SMBus drivers in each host operating system.
14219 Fixed a problem where the semaphore WAIT_FOREVER constant was
14220 defined as 32 bits, but must be 16 bits according to the ACPI
14221 specification. This had the side effect of causing ASL
14222 Mutex/Event timeouts even though the ASL code requested a wait
14223 forever. Changed all internal references to the ACPI timeout
14224 parameter to 16 bits to prevent future problems. Changed the name
14225 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14227 Code and Data Size: Current core subsystem library sizes are shown
14228 below. These are the code and data sizes for the acpica.lib
14229 produced by the Microsoft Visual C++ 6.0 compiler, and these
14230 values do not include any ACPI driver or OSPM code. The debug
14231 version of the code includes the debug output trace mechanism and
14232 has a much larger code and data size. Note that these values will
14233 vary depending on the efficiency of the compiler and the compiler
14234 options used during generation.
14237 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14238 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14240 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14241 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14246 Module loading/unloading fixes (John Cagle)
14249 3) iASL Compiler/Disassembler
14251 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14253 Implemented support for the disassembly of all SMBus protocol
14254 keywords (SMBQuick, SMBWord, etc.)
14256 ----------------------------------------
14257 01 November 2002. Summary of changes for version 20021101.
14260 1) ACPI CA Core Subsystem:
14262 Fixed a problem where platforms that have a GPE1 block but no GPE0
14263 block were not handled correctly. This resulted in a "GPE
14264 overlap" error message. GPE0 is no longer required.
14266 Removed code added in the previous release that inserted nodes
14267 into the namespace in alphabetical order. This caused some side-
14268 effects on various machines. The root cause of the problem is
14269 still under investigation since in theory, the internal ordering
14270 of the namespace nodes should not matter.
14273 Enhanced error reporting for the case where a named object is not
14274 found during control method execution. The full ACPI namepath
14275 (name reference) of the object that was not found is displayed in
14278 Note: as a result of the overhaul of the namespace object types in
14279 the previous release, the namespace nodes for the predefined
14280 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14281 instead of ACPI_TYPE_ANY. This simplifies the namespace
14282 management code but may affect code that walks the namespace tree
14283 looking for specific object types.
14285 Code and Data Size: Current core subsystem library sizes are shown
14286 below. These are the code and data sizes for the acpica.lib
14287 produced by the Microsoft Visual C++ 6.0 compiler, and these
14288 values do not include any ACPI driver or OSPM code. The debug
14289 version of the code includes the debug output trace mechanism and
14290 has a much larger code and data size. Note that these values will
14291 vary depending on the efficiency of the compiler and the compiler
14292 options used during generation.
14295 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14296 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14298 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14299 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14304 Fixed a problem introduced in the previous release where the
14305 Processor and Thermal objects were not recognized and installed in
14306 /proc. This was related to the scope type change described above.
14309 3) iASL Compiler/Disassembler
14311 Implemented the -g option to get all of the required ACPI tables
14312 from the registry and save them to files (Windows version of the
14313 compiler only.) The required tables are the FADT, FACS, and DSDT.
14315 Added ACPI table checksum validation during table disassembly in
14316 order to catch corrupted tables.
14319 ----------------------------------------
14320 22 October 2002. Summary of changes for version 20021022.
14322 1) ACPI CA Core Subsystem:
14324 Implemented a restriction on the Scope operator that the target
14325 must already exist in the namespace at the time the operator is
14326 encountered (during table load or method execution). In other
14327 words, forward references are not allowed and Scope() cannot
14328 create a new object. This changes the previous behavior where the
14329 interpreter would create the name if not found. This new behavior
14330 correctly enables the search-to-root algorithm during namespace
14331 lookup of the target name. Because of this upsearch, this fixes
14332 the known Compaq _SB_.OKEC problem and makes both the AML
14333 interpreter and iASL compiler compatible with other ACPI
14336 Completed a major overhaul of the internal ACPI object types for
14337 the ACPI Namespace and the associated operand objects. Many of
14338 these types had become obsolete with the introduction of the two-
14339 pass namespace load. This cleanup simplifies the code and makes
14340 the entire namespace load mechanism much clearer and easier to
14343 Improved debug output for tracking scope opening/closing to help
14344 diagnose scoping issues. The old scope name as well as the new
14345 scope name are displayed. Also improved error messages for
14346 problems with ASL Mutex objects and error messages for GPE
14349 Cleaned up the namespace dump code, removed obsolete code.
14351 All string output (for all namespace/object dumps) now uses the
14352 common ACPI string output procedure which handles escapes properly
14353 and does not emit non-printable characters.
14355 Fixed some issues with constants in the 64-bit version of the
14356 local C library (utclib.c)
14361 EC Driver: No longer attempts to acquire the Global Lock at
14365 3) iASL Compiler/Disassembler
14367 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14368 2 opcodes outside of a control method. This means that the
14369 "executable" operators (versus the "namespace" operators) cannot
14370 be used at the table level; they can only be used within a control
14373 Implemented the restriction on the Scope() operator where the
14374 target must already exist in the namespace at the time the
14375 operator is encountered (during ASL compilation). In other words,
14376 forward references are not allowed and Scope() cannot create a new
14377 object. This makes the iASL compiler compatible with other ACPI
14378 implementations and makes the Scope() implementation adhere to the
14379 ACPI specification.
14381 Fixed a problem where namepath optimization for the Alias operator
14382 was optimizing the wrong path (of the two namepaths.) This caused
14383 a "Missing alias link" error message.
14385 Fixed a problem where an "unknown reserved name" warning could be
14386 incorrectly generated for names like "_SB" when the trailing
14387 underscore is not used in the original ASL.
14389 Fixed a problem where the reserved name check did not handle
14390 NamePaths with multiple NameSegs correctly. The first nameseg of
14391 the NamePath was examined instead of the last NameSeg.
14394 ----------------------------------------
14396 02 October 2002. Summary of changes for this release.
14399 1) ACPI CA Core Subsystem version 20021002:
14401 Fixed a problem where a store/copy of a string to an existing
14402 string did not always set the string length properly in the String
14405 Fixed a reported problem with the ToString operator where the
14406 behavior was identical to the ToHexString operator instead of just
14407 simply converting a raw buffer to a string data type.
14409 Fixed a problem where CopyObject and the other "explicit"
14410 conversion operators were not updating the internal namespace node
14411 type as part of the store operation.
14413 Fixed a memory leak during implicit source operand conversion
14414 where the original object was not deleted if it was converted to a
14415 new object of a different type.
14417 Enhanced error messages for all problems associated with namespace
14418 lookups. Common procedure generates and prints the lookup name as
14419 well as the formatted status.
14421 Completed implementation of a new design for the Alias support
14422 within the namespace. The existing design did not handle the case
14423 where a new object was assigned to one of the two names due to the
14424 use of an explicit conversion operator, resulting in the two names
14425 pointing to two different objects. The new design simply points
14426 the Alias name to the original name node - not to the object.
14427 This results in a level of indirection that must be handled in the
14428 name resolution mechanism.
14430 Code and Data Size: Current core subsystem library sizes are shown
14431 below. These are the code and data sizes for the acpica.lib
14432 produced by the Microsoft Visual C++ 6.0 compiler, and these
14433 values do not include any ACPI driver or OSPM code. The debug
14434 version of the code includes the debug output trace mechanism and
14435 has a larger code and data size. Note that these values will vary
14436 depending on the efficiency of the compiler and the compiler
14437 options used during generation.
14440 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14441 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14443 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14444 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14449 Initialize thermal driver's timer before it is used. (Knut
14452 Allow handling negative celsius values. (Kochi Takayoshi)
14454 Fix thermal management and make trip points. R/W (Pavel Machek)
14456 Fix /proc/acpi/sleep. (P. Christeas)
14458 IA64 fixes. (David Mosberger)
14460 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14462 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14466 3) iASL Compiler/Disassembler
14468 Clarified some warning/error messages.
14471 ----------------------------------------
14472 18 September 2002. Summary of changes for this release.
14475 1) ACPI CA Core Subsystem version 20020918:
14477 Fixed a reported problem with reference chaining (via the Index()
14478 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14479 The definition of these operators includes the dereferencing of
14480 all chained references to return information on the base object.
14482 Fixed a problem with stores to indexed package elements - the
14483 existing code would not complete the store if an "implicit
14484 conversion" was not performed. In other words, if the existing
14485 object (package element) was to be replaced completely, the code
14486 didn't handle this case.
14488 Relaxed typechecking on the ASL "Scope" operator to allow the
14489 target name to refer to an object of type Integer, String, or
14490 Buffer, in addition to the scoping object types (Device,
14491 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14492 This allows existing AML code that has workarounds for a bug in
14493 Windows to function properly. A warning is issued, however. This
14494 affects both the AML interpreter and the iASL compiler. Below is
14495 an example of this type of ASL code:
14501 Fixed some reported problems with 64-bit integer support in the
14502 local implementation of C library functions (clib.c)
14507 Use ACPI fix map region instead of IOAPIC region, since it is
14508 undefined in non-SMP.
14510 Ensure that the SCI has the proper polarity and trigger, even on
14511 systems that do not have an interrupt override entry in the MADT.
14513 2.5 big driver reorganization (Pat Mochel)
14515 Use early table mapping code from acpitable.c (Andi Kleen)
14517 New blacklist entries (Andi Kleen)
14519 Blacklist improvements. Split blacklist code out into a separate
14520 file. Move checking the blacklist to very early. Previously, we
14521 would use ACPI tables, and then halfway through init, check the
14522 blacklist -- too late. Now, it's early enough to completely fall-
14526 3) iASL Compiler/Disassembler version 20020918:
14528 Fixed a problem where the typechecking code didn't know that an
14529 alias could point to a method. In other words, aliases were not
14530 being dereferenced during typechecking.
14533 ----------------------------------------
14534 29 August 2002. Summary of changes for this release.
14536 1) ACPI CA Core Subsystem Version 20020829:
14538 If the target of a Scope() operator already exists, it must be an
14539 object type that actually opens a scope -- such as a Device,
14540 Method, Scope, etc. This is a fatal runtime error. Similar error
14541 check has been added to the iASL compiler also.
14543 Tightened up the namespace load to disallow multiple names in the
14544 same scope. This previously was allowed if both objects were of
14545 the same type. (i.e., a lookup was the same as entering a new
14551 Ensure that the ACPI interrupt has the proper trigger and
14554 local_irq_disable is extraneous. (Matthew Wilcox)
14556 Make "acpi=off" actually do what it says, and not use the ACPI
14557 interpreter *or* the tables.
14559 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14563 3) iASL Compiler/Disassembler Version 20020829:
14565 Implemented namepath optimization for name declarations. For
14566 example, a declaration like "Method (\_SB_.ABCD)" would get
14567 optimized to "Method (ABCD)" if the declaration is within the
14568 \_SB_ scope. This optimization is in addition to the named
14569 reference path optimization first released in the previous
14570 version. This would seem to complete all possible optimizations
14571 for namepaths within the ASL/AML.
14573 If the target of a Scope() operator already exists, it must be an
14574 object type that actually opens a scope -- such as a Device,
14575 Method, Scope, etc.
14577 Implemented a check and warning for unreachable code in the same
14578 block below a Return() statement.
14580 Fixed a problem where the listing file was not generated if the
14581 compiler aborted if the maximum error count was exceeded (200).
14583 Fixed a problem where the typechecking of method return values was
14584 broken. This includes the check for a return value when the
14585 method is invoked as a TermArg (a return value is expected.)
14587 Fixed a reported problem where EOF conditions during a quoted
14588 string or comment caused a fault.
14591 ----------------------------------------
14592 15 August 2002. Summary of changes for this release.
14594 1) ACPI CA Core Subsystem Version 20020815:
14596 Fixed a reported problem where a Store to a method argument that
14597 contains a reference did not perform the indirect store correctly.
14598 This problem was created during the conversion to the new
14599 reference object model - the indirect store to a method argument
14600 code was not updated to reflect the new model.
14602 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14603 handle corner cases, and improve code legibility (Kochi Takayoshi)
14605 Fixed a problem with the pathname parsing for the carat (^)
14606 prefix. The heavy use of the carat operator by the new namepath
14607 optimization in the iASL compiler uncovered a problem with the AML
14608 interpreter handling of this prefix. In the case where one or
14609 more carats precede a single nameseg, the nameseg was treated as
14610 standalone and the search rule (to root) was inadvertently
14611 applied. This could cause both the iASL compiler and the
14612 interpreter to find the wrong object or to miss the error that
14613 should occur if the object does not exist at that exact pathname.
14615 Found and fixed the problem where the HP Pavilion DSDT would not
14616 load. This was a relatively minor tweak to the table loading code
14617 (a problem caused by the unexpected encounter with a method
14618 invocation not within a control method), but it does not solve the
14619 overall issue of the execution of AML code at the table level.
14620 This investigation is still ongoing.
14622 Code and Data Size: Current core subsystem library sizes are shown
14623 below. These are the code and data sizes for the acpica.lib
14624 produced by the Microsoft Visual C++ 6.0 compiler, and these
14625 values do not include any ACPI driver or OSPM code. The debug
14626 version of the code includes the debug output trace mechanism and
14627 has a larger code and data size. Note that these values will vary
14628 depending on the efficiency of the compiler and the compiler
14629 options used during generation.
14632 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14633 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14635 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14636 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14641 Remove redundant slab.h include (Brad Hards)
14643 Fix several bugs in thermal.c (Herbert Nachtnebel)
14645 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
14647 Change acpi_system_suspend to use updated irq functions (Pavel
14650 Export acpi_get_firmware_table (Matthew Wilcox)
14652 Use proper root proc entry for ACPI (Kochi Takayoshi)
14654 Fix early-boot table parsing (Bjorn Helgaas)
14657 3) iASL Compiler/Disassembler
14659 Reworked the compiler options to make them more consistent and to
14660 use two-letter options where appropriate. We were running out of
14661 sensible letters. This may break some makefiles, so check the
14662 current options list by invoking the compiler with no parameters.
14664 Completed the design and implementation of the ASL namepath
14665 optimization option for the compiler. This option optimizes all
14666 references to named objects to the shortest possible path. The
14667 first attempt tries to utilize a single nameseg (4 characters) and
14668 the "search-to-root" algorithm used by the interpreter. If that
14669 cannot be used (because either the name is not in the search path
14670 or there is a conflict with another object with the same name),
14671 the pathname is optimized using the carat prefix (usually a
14672 shorter string than specifying the entire path from the root.)
14674 Implemented support to obtain the DSDT from the Windows registry
14675 (when the disassembly option is specified with no input file).
14676 Added this code as the implementation for AcpiOsTableOverride in
14677 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
14678 utility) to scan memory for the DSDT to the AcpiOsTableOverride
14679 function in the DOS OSL to make the disassembler truly OS
14682 Implemented a new option to disassemble and compile in one step.
14683 When used without an input filename, this option will grab the
14684 DSDT from the local machine, disassemble it, and compile it in one
14687 Added a warning message for invalid escapes (a backslash followed
14688 by any character other than the allowable escapes). This catches
14689 the quoted string error "\_SB_" (which should be "\\_SB_" ).
14691 Also, there are numerous instances in the ACPI specification where
14694 Added a compiler option to disable all optimizations. This is
14695 basically the "compatibility mode" because by using this option,
14696 the AML code will come out exactly the same as other ASL
14699 Added error messages for incorrectly ordered dependent resource
14700 functions. This includes: missing EndDependentFn macro at end of
14701 dependent resource list, nested dependent function macros (both
14702 start and end), and missing StartDependentFn macro. These are
14703 common errors that should be caught at compile time.
14705 Implemented _OSI support for the disassembler and compiler. _OSI
14706 must be included in the namespace for proper disassembly (because
14707 the disassembler must know the number of arguments.)
14709 Added an "optimization" message type that is optional (off by
14710 default). This message is used for all optimizations - including
14711 constant folding, integer optimization, and namepath optimization.
14713 ----------------------------------------
14714 25 July 2002. Summary of changes for this release.
14717 1) ACPI CA Core Subsystem Version 20020725:
14719 The AML Disassembler has been enhanced to produce compilable ASL
14720 code and has been integrated into the iASL compiler (see below) as
14721 well as the single-step disassembly for the AML debugger and the
14722 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14723 resource templates and macros are fully supported. The
14724 disassembler has been tested on over 30 different AML files,
14725 producing identical AML when the resulting disassembled ASL file
14726 is recompiled with the same ASL compiler.
14728 Modified the Resource Manager to allow zero interrupts and zero
14729 dma channels during the GetCurrentResources call. This was
14730 causing problems on some platforms.
14732 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14733 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14736 Code and Data Size: Current core subsystem library sizes are shown
14737 below. These are the code and data sizes for the acpica.lib
14738 produced by the Microsoft Visual C++ 6.0 compiler, and these
14739 values do not include any ACPI driver or OSPM code. The debug
14740 version of the code includes the debug output trace mechanism and
14741 has a larger code and data size. Note that these values will vary
14742 depending on the efficiency of the compiler and the compiler
14743 options used during generation.
14746 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14747 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14749 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14750 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14755 Fixed a panic in the EC driver (Dominik Brodowski)
14757 Implemented checksum of the R/XSDT itself during Linux table scan
14763 The AML disassembler is integrated into the compiler. The "-d"
14764 option invokes the disassembler to completely disassemble an
14765 input AML file, producing as output a text ASL file with the
14766 extension ".dsl" (to avoid name collisions with existing .asl
14767 source files.) A future enhancement will allow the disassembler
14768 to obtain the BIOS DSDT from the registry under Windows.
14770 Fixed a problem with the VendorShort and VendorLong resource
14771 descriptors where an invalid AML sequence was created.
14773 Implemented a fix for BufferData term in the ASL parser. It was
14774 inadvertently defined twice, allowing invalid syntax to pass and
14775 causing reduction conflicts.
14777 Fixed a problem where the Ones opcode could get converted to a
14778 value of zero if "Ones" was used where a byte, word or dword value
14779 was expected. The 64-bit value is now truncated to the correct
14780 size with the correct value.
14784 ----------------------------------------
14785 02 July 2002. Summary of changes for this release.
14788 1) ACPI CA Core Subsystem Version 20020702:
14790 The Table Manager code has been restructured to add several new
14791 features. Tables that are not required by the core subsystem
14792 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14793 validated in any way and are returned from AcpiGetFirmwareTable if
14794 requested. The AcpiOsTableOverride interface is now called for
14795 each table that is loaded by the subsystem in order to allow the
14796 host to override any table it chooses. Previously, only the DSDT
14797 could be overridden. Added one new files, tbrsdt.c and
14800 Fixed a problem with the conversion of internal package objects to
14801 external objects (when a package is returned from a control
14802 method.) The return buffer length was set to zero instead of the
14803 proper length of the package object.
14805 Fixed a reported problem with the use of the RefOf and DeRefOf
14806 operators when passing reference arguments to control methods. A
14807 new type of Reference object is used internally for references
14808 produced by the RefOf operator.
14810 Added additional error messages in the Resource Manager to explain
14811 AE_BAD_DATA errors when they occur during resource parsing.
14813 Split the AcpiEnableSubsystem into two primitives to enable a
14814 finer granularity initialization sequence. These two calls should
14815 be called in this order: AcpiEnableSubsystem (flags),
14816 AcpiInitializeObjects (flags). The flags parameter remains the
14822 Updated the ACPI utilities module to understand the new style of
14823 fully resolved package objects that are now returned from the core
14824 subsystem. This eliminates errors of the form:
14826 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14827 acpi_utils-0430 [145] acpi_evaluate_reference:
14828 Invalid element in package (not a device reference)
14830 The method evaluation utility uses the new buffer allocation
14831 scheme instead of calling AcpiEvaluate Object twice.
14833 Added support for ECDT. This allows the use of the Embedded
14835 Controller before the namespace has been fully initialized, which
14836 is necessary for ACPI 2.0 support, and for some laptops to
14837 initialize properly. (Laptops using ECDT are still rare, so only
14838 limited testing was performed of the added functionality.)
14840 Fixed memory leaks in the EC driver.
14842 Eliminated a brittle code structure in acpi_bus_init().
14844 Eliminated the acpi_evaluate() helper function in utils.c. It is
14845 no longer needed since acpi_evaluate_object can optionally
14846 allocate memory for the return object.
14848 Implemented fix for keyboard hang when getting battery readings on
14849 some systems (Stephen White)
14851 PCI IRQ routing update (Dominik Brodowski)
14853 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
14856 ----------------------------------------
14857 11 June 2002. Summary of changes for this release.
14860 1) ACPI CA Core Subsystem Version 20020611:
14862 Fixed a reported problem where constants such as Zero and One
14863 appearing within _PRT packages were not handled correctly within
14864 the resource manager code. Originally reported against the ASL
14865 compiler because the code generator now optimizes integers to
14866 their minimal AML representation (i.e. AML constants if possible.)
14867 The _PRT code now handles all AML constant opcodes correctly
14868 (Zero, One, Ones, Revision).
14870 Fixed a problem with the Concatenate operator in the AML
14871 interpreter where a buffer result object was incorrectly marked as
14872 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
14874 All package sub-objects are now fully resolved before they are
14875 returned from the external ACPI interfaces. This means that name
14876 strings are resolved to object handles, and constant operators
14877 (Zero, One, Ones, Revision) are resolved to Integers.
14879 Implemented immediate resolution of the AML Constant opcodes
14880 (Zero, One, Ones, Revision) to Integer objects upon detection
14881 within the AML stream. This has simplified and reduced the
14882 generated code size of the subsystem by eliminating about 10
14883 switch statements for these constants (which previously were
14884 contained in Reference objects.) The complicating issues are that
14885 the Zero opcode is used as a "placeholder" for unspecified
14886 optional target operands and stores to constants are defined to be
14889 Code and Data Size: Current core subsystem library sizes are shown
14890 below. These are the code and data sizes for the acpica.lib
14891 produced by the Microsoft Visual C++ 6.0 compiler, and these
14892 values do not include any ACPI driver or OSPM code. The debug
14893 version of the code includes the debug output trace mechanism and
14894 has a larger code and data size. Note that these values will vary
14895 depending on the efficiency of the compiler and the compiler
14896 options used during generation.
14899 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14900 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14902 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14903 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14909 Added preliminary support for obtaining _TRA data for PCI root
14910 bridges (Bjorn Helgaas).
14913 3) iASL Compiler Version X2046:
14915 Fixed a problem where the "_DDN" reserved name was defined to be a
14916 control method with one argument. There are no arguments, and
14917 _DDN does not have to be a control method.
14919 Fixed a problem with the Linux version of the compiler where the
14920 source lines printed with error messages were the wrong lines.
14921 This turned out to be the "LF versus CR/LF" difference between
14922 Windows and Unix. This appears to be the longstanding issue
14923 concerning listing output and error messages.
14925 Fixed a problem with the Linux version of compiler where opcode
14926 names within error messages were wrong. This was caused by a
14927 slight difference in the output of the Flex tool on Linux versus
14930 Fixed a problem with the Linux compiler where the hex output files
14931 contained some garbage data caused by an internal buffer overrun.
14934 ----------------------------------------
14935 17 May 2002. Summary of changes for this release.
14938 1) ACPI CA Core Subsystem Version 20020517:
14940 Implemented a workaround to an BIOS bug discovered on the HP
14941 OmniBook where the FADT revision number and the table size are
14942 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14943 behavior is to fallback to using only the ACPI 1.0 fields of the
14944 FADT if the table is too small to be a ACPI 2.0 table as claimed
14945 by the revision number. Although this is a BIOS bug, this is a
14946 case where the workaround is simple enough and with no side
14947 effects, so it seemed prudent to add it. A warning message is
14950 Implemented minimum size checks for the fixed-length ACPI tables -
14951 - the FADT and FACS, as well as consistency checks between the
14952 revision number and the table size.
14954 Fixed a reported problem in the table override support where the
14955 new table pointer was incorrectly treated as a physical address
14956 instead of a logical address.
14958 Eliminated the use of the AE_AML_ERROR exception and replaced it
14959 with more descriptive codes.
14961 Fixed a problem where an exception would occur if an ASL Field was
14962 defined with no named Field Units underneath it (used by some
14965 Code and Data Size: Current core subsystem library sizes are shown
14966 below. These are the code and data sizes for the acpica.lib
14967 produced by the Microsoft Visual C++ 6.0 compiler, and these
14968 values do not include any ACPI driver or OSPM code. The debug
14969 version of the code includes the debug output trace mechanism and
14970 has a larger code and data size. Note that these values will vary
14971 depending on the efficiency of the compiler and the compiler
14972 options used during generation.
14975 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14976 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14978 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14979 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14985 Much work done on ACPI init (MADT and PCI IRQ routing support).
14986 (Paul D. and Dominik Brodowski)
14988 Fix PCI IRQ-related panic on boot (Sam Revitch)
14990 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14992 Fix "MHz" typo (Dominik Brodowski)
14994 Fix RTC year 2000 issue (Dominik Brodowski)
14996 Preclude multiple button proc entries (Eric Brunet)
14998 Moved arch-specific code out of include/platform/aclinux.h
15000 3) iASL Compiler Version X2044:
15002 Implemented error checking for the string used in the EISAID macro
15003 (Usually used in the definition of the _HID object.) The code now
15004 strictly enforces the PnP format - exactly 7 characters, 3
15005 uppercase letters and 4 hex digits.
15007 If a raw string is used in the definition of the _HID object
15008 (instead of the EISAID macro), the string must contain all
15009 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15012 Implemented checking for invalid use of ACPI reserved names for
15013 most of the name creation operators (Name, Device, Event, Mutex,
15014 OperationRegion, PowerResource, Processor, and ThermalZone.)
15015 Previously, this check was only performed for control methods.
15017 Implemented an additional check on the Name operator to emit an
15018 error if a reserved name that must be implemented in ASL as a
15019 control method is used. We know that a reserved name must be a
15020 method if it is defined with input arguments.
15022 The warning emitted when a namespace object reference is not found
15023 during the cross reference phase has been changed into an error.
15024 The "External" directive should be used for names defined in other
15028 4) Tools and Utilities
15030 The 16-bit tools (adump16 and aexec16) have been regenerated and
15033 Fixed a problem with the output of both acpidump and adump16 where
15034 the indentation of closing parentheses and brackets was not
15036 aligned properly with the parent block.
15039 ----------------------------------------
15040 03 May 2002. Summary of changes for this release.
15043 1) ACPI CA Core Subsystem Version 20020503:
15045 Added support a new OSL interface that allows the host operating
15047 system software to override the DSDT found in the firmware -
15048 AcpiOsTableOverride. With this interface, the OSL can examine the
15049 version of the firmware DSDT and replace it with a different one
15052 Added new external interfaces for accessing ACPI registers from
15053 device drivers and other system software - AcpiGetRegister and
15054 AcpiSetRegister. This was simply an externalization of the
15055 existing AcpiHwBitRegister interfaces.
15057 Fixed a regression introduced in the previous build where the
15058 ASL/AML CreateField operator always returned an error,
15059 "destination must be a NS Node".
15061 Extended the maximum time (before failure) to successfully enable
15062 ACPI mode to 3 seconds.
15064 Code and Data Size: Current core subsystem library sizes are shown
15065 below. These are the code and data sizes for the acpica.lib
15066 produced by the Microsoft Visual C++ 6.0 compiler, and these
15067 values do not include any ACPI driver or OSPM code. The debug
15068 version of the code includes the debug output trace mechanism and
15069 has a larger code and data size. Note that these values will vary
15070 depending on the efficiency of the compiler and the compiler
15071 options used during generation.
15074 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15075 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15077 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15078 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15083 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15084 free. While 3 out of 4 of our in-house systems work fine, the last
15085 one still hangs when testing the LAPIC timer.
15087 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15090 Added warning on boot for Presario 711FR.
15092 Sleep improvements (Pavel Machek)
15094 ACPI can now be built without CONFIG_PCI enabled.
15096 IA64: Fixed memory map functions (JI Lee)
15099 3) iASL Compiler Version X2043:
15101 Added support to allow the compiler to be integrated into the MS
15102 VC++ development environment for one-button compilation of single
15103 files or entire projects -- with error-to-source-line mapping.
15105 Implemented support for compile-time constant folding for the
15106 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15107 specification. This allows the ASL writer to use expressions
15108 instead of Integer/Buffer/String constants in terms that must
15109 evaluate to constants at compile time and will also simplify the
15110 emitted AML in any such sub-expressions that can be folded
15111 (evaluated at compile-time.) This increases the size of the
15112 compiler significantly because a portion of the ACPI CA AML
15113 interpreter is included within the compiler in order to pre-
15114 evaluate constant expressions.
15117 Fixed a problem with the "Unicode" ASL macro that caused the
15118 compiler to fault. (This macro is used in conjunction with the
15119 _STR reserved name.)
15121 Implemented an AML opcode optimization to use the Zero, One, and
15122 Ones opcodes where possible to further reduce the size of integer
15123 constants and thus reduce the overall size of the generated AML
15126 Implemented error checking for new reserved terms for ACPI version
15129 Implemented the -qr option to display the current list of ACPI
15130 reserved names known to the compiler.
15132 Implemented the -qc option to display the current list of ASL
15133 operators that are allowed within constant expressions and can
15134 therefore be folded at compile time if the operands are constants.
15139 Updated the Programmer's Reference for new interfaces, data types,
15140 and memory allocation model options.
15142 Updated the iASL Compiler User Reference to apply new format and
15143 add information about new features and options.
15145 ----------------------------------------
15146 19 April 2002. Summary of changes for this release.
15148 1) ACPI CA Core Subsystem Version 20020419:
15150 The source code base for the Core Subsystem has been completely
15151 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15152 versions. The Lint option files used are included in the
15153 /acpi/generate/lint directory.
15155 Implemented enhanced status/error checking across the entire
15156 Hardware manager subsystem. Any hardware errors (reported from
15157 the OSL) are now bubbled up and will abort a running control
15161 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15162 was stored only with control method nodes, causing a fault when
15163 non-control method code was executed during table loading. The
15164 solution implemented uses a global variable to indicate table
15165 width across the entire ACPI subsystem. Therefore, ACPI CA does
15166 not support mixed integer widths across different ACPI tables
15169 Fixed a problem where NULL extended fields (X fields) in an ACPI
15170 2.0 ACPI FADT caused the table load to fail. Although the
15171 existing ACPI specification is a bit fuzzy on this topic, the new
15172 behavior is to fall back on a ACPI 1.0 field if the corresponding
15173 ACPI 2.0 X field is zero (even though the table revision indicates
15174 a full ACPI 2.0 table.) The ACPI specification will be updated to
15175 clarify this issue.
15177 Fixed a problem with the SystemMemory operation region handler
15178 where memory was always accessed byte-wise even if the AML-
15179 specified access width was larger than a byte. This caused
15180 problems on systems with memory-mapped I/O. Memory is now
15181 accessed with the width specified. On systems that do not support
15182 non-aligned transfers, a check is made to guarantee proper address
15183 alignment before proceeding in order to avoid an AML-caused
15184 alignment fault within the kernel.
15187 Fixed a problem with the ExtendedIrq resource where only one byte
15188 of the 4-byte Irq field was extracted.
15190 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15191 function was out of date and required a rewrite.
15193 Code and Data Size: Current core subsystem library sizes are shown
15194 below. These are the code and data sizes for the acpica.lib
15195 produced by the Microsoft Visual C++ 6.0 compiler, and these
15196 values do not include any ACPI driver or OSPM code. The debug
15197 version of the code includes the debug output trace mechanism and
15198 has a larger code and data size. Note that these values will vary
15199 depending on the efficiency of the compiler and the compiler
15200 options used during generation.
15203 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15204 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15206 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15207 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15212 PCI IRQ routing fixes (Dominik Brodowski)
15215 3) iASL Compiler Version X2042:
15217 Implemented an additional compile-time error check for a field
15218 unit whose size + minimum access width would cause a run-time
15219 access beyond the end-of-region. Previously, only the field size
15220 itself was checked.
15222 The Core subsystem and iASL compiler now share a common parse
15223 object in preparation for compile-time evaluation of the type
15224 3/4/5 ASL operators.
15227 ----------------------------------------
15228 Summary of changes for this release: 03_29_02
15230 1) ACPI CA Core Subsystem Version 20020329:
15232 Implemented support for late evaluation of TermArg operands to
15233 Buffer and Package objects. This allows complex expressions to be
15234 used in the declarations of these object types.
15236 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15237 1.0, if the field was larger than 32 bits, it was returned as a
15238 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15239 the field is returned as a buffer only if the field is larger than
15240 64 bits. The TableRevision is now considered when making this
15241 conversion to avoid incompatibility with existing ASL code.
15243 Implemented logical addressing for AcpiOsGetRootPointer. This
15244 allows an RSDP with either a logical or physical address. With
15245 this support, the host OS can now override all ACPI tables with
15246 one logical RSDP. Includes implementation of "typed" pointer
15247 support to allow a common data type for both physical and logical
15248 pointers internally. This required a change to the
15249 AcpiOsGetRootPointer interface.
15251 Implemented the use of ACPI 2.0 Generic Address Structures for all
15252 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15253 mapped I/O for these ACPI features.
15255 Initialization now ignores not only non-required tables (All
15256 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15257 not validate the table headers of unrecognized tables.
15259 Fixed a problem where a notify handler could only be
15260 installed/removed on an object of type Device. All "notify"
15262 objects are now supported -- Devices, Processor, Power, and
15265 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15266 critical information is returned when this debug level is enabled.
15268 Code and Data Size: Current core subsystem library sizes are shown
15269 below. These are the code and data sizes for the acpica.lib
15270 produced by the Microsoft Visual C++ 6.0 compiler, and these
15271 values do not include any ACPI driver or OSPM code. The debug
15272 version of the code includes the debug output trace mechanism and
15273 has a larger code and data size. Note that these values will vary
15274 depending on the efficiency of the compiler and the compiler
15275 options used during generation.
15278 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15279 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15281 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15282 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15287 The processor driver (acpi_processor.c) now fully supports ACPI
15288 2.0-based processor performance control (e.g. Intel(R)
15289 SpeedStep(TM) technology) Note that older laptops that only have
15290 the Intel "applet" interface are not supported through this. The
15291 'limit' and 'performance' interface (/proc) are fully functional.
15292 [Note that basic policy for controlling performance state
15293 transitions will be included in the next version of ospmd.] The
15294 idle handler was modified to more aggressively use C2, and PIIX4
15295 errata handling underwent a complete overhaul (big thanks to
15296 Dominik Brodowski).
15298 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15299 based devices in the ACPI namespace are now dynamically bound
15300 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15301 This allows, among other things, ACPI to resolve bus numbers for
15302 subordinate PCI bridges.
15304 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15305 entries defined underneath PCI bridges.
15307 Added IBM 600E to bad bios list due to invalid _ADR value for
15308 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15310 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15311 (acpi.c, mpparse.c) -- stay tuned.
15313 Added back visual differentiation between fixed-feature and
15314 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15315 button/power/PWRF) to simplify button identification.
15317 We no longer use -Wno-unused when compiling debug. Please ignore
15318 any "_THIS_MODULE defined but not used" messages.
15320 Can now shut down the system using "magic sysrq" key.
15323 3) iASL Compiler version 2041:
15325 Fixed a problem where conversion errors for hex/octal/decimal
15326 constants were not reported.
15328 Implemented a fix for the General Register template Address field.
15329 This field was 8 bits when it should be 64.
15331 Fixed a problem where errors/warnings were no longer being emitted
15332 within the listing output file.
15334 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15335 exactly 4 characters, alphanumeric only.
15340 ----------------------------------------
15341 Summary of changes for this release: 03_08_02
15344 1) ACPI CA Core Subsystem Version 20020308:
15346 Fixed a problem with AML Fields where the use of the "AccessAny"
15347 keyword could cause an interpreter error due to attempting to read
15348 or write beyond the end of the parent Operation Region.
15350 Fixed a problem in the SystemMemory Operation Region handler where
15351 an attempt was made to map memory beyond the end of the region.
15352 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15353 errors on some Linux systems.
15355 Fixed a problem where the interpreter/namespace "search to root"
15356 algorithm was not functioning for some object types. Relaxed the
15357 internal restriction on the search to allow upsearches for all
15358 external object types as well as most internal types.
15363 We now use safe_halt() macro versus individual calls to sti | hlt.
15365 Writing to the processor limit interface should now work. "echo 1"
15366 will increase the limit, 2 will decrease, and 0 will reset to the
15373 Fixed segfault on Linux version.
15376 ----------------------------------------
15377 Summary of changes for this release: 02_25_02
15379 1) ACPI CA Core Subsystem:
15382 Fixed a problem where the GPE bit masks were not initialized
15383 properly, causing erratic GPE behavior.
15385 Implemented limited support for multiple calling conventions. The
15386 code can be generated with either the VPL (variable parameter
15387 list, or "C") convention, or the FPL (fixed parameter list, or
15388 "Pascal") convention. The core subsystem is about 3.4% smaller
15389 when generated with FPL.
15394 Re-add some /proc/acpi/event functionality that was lost during
15397 Resolved issue with /proc events for fixed-feature buttons showing
15398 up as the system device.
15400 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15402 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15404 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15406 Fixed limit interface & usage to fix bugs with passive cooling
15409 Restructured PRT support.
15412 ----------------------------------------
15413 Summary of changes for this label: 02_14_02
15416 1) ACPI CA Core Subsystem:
15418 Implemented support in AcpiLoadTable to allow loading of FACS and
15421 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15422 been removed. All 64-bit platforms should be migrated to the ACPI
15423 2.0 tables. The actbl71.h header has been removed from the source
15426 All C macros defined within the subsystem have been prefixed with
15427 "ACPI_" to avoid collision with other system include files.
15429 Removed the return value for the two AcpiOsPrint interfaces, since
15430 it is never used and causes lint warnings for ignoring the return
15433 Added error checking to all internal mutex acquire and release
15434 calls. Although a failure from one of these interfaces is
15435 probably a fatal system error, these checks will cause the
15436 immediate abort of the currently executing method or interface.
15438 Fixed a problem where the AcpiSetCurrentResources interface could
15439 fault. This was a side effect of the deployment of the new memory
15442 Fixed a couple of problems with the Global Lock support introduced
15443 in the last major build. The "common" (1.0/2.0) internal FACS was
15444 being overwritten with the FACS signature and clobbering the
15445 Global Lock pointer. Also, the actual firmware FACS was being
15446 unmapped after construction of the "common" FACS, preventing
15447 access to the actual Global Lock field within it. The "common"
15448 internal FACS is no longer installed as an actual ACPI table; it
15449 is used simply as a global.
15451 Code and Data Size: Current core subsystem library sizes are shown
15452 below. These are the code and data sizes for the acpica.lib
15453 produced by the Microsoft Visual C++ 6.0 compiler, and these
15454 values do not include any ACPI driver or OSPM code. The debug
15455 version of the code includes the debug output trace mechanism and
15456 has a larger code and data size. Note that these values will vary
15457 depending on the efficiency of the compiler and the compiler
15458 options used during generation.
15460 Previous Release (02_07_01)
15461 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15462 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15464 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15465 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15470 Updated Linux-specific code for core macro and OSL interface
15471 changes described above.
15473 Improved /proc/acpi/event. It now can be opened only once and has
15474 proper poll functionality.
15476 Fixed and restructured power management (acpi_bus).
15478 Only create /proc "view by type" when devices of that class exist.
15480 Fixed "charging/discharging" bug (and others) in acpi_battery.
15482 Improved thermal zone code.
15485 3) ASL Compiler, version X2039:
15488 Implemented the new compiler restriction on ASL String hex/octal
15489 escapes to non-null, ASCII values. An error results if an invalid
15490 value is used. (This will require an ACPI 2.0 specification
15493 AML object labels that are output to the optional C and ASM source
15494 are now prefixed with both the ACPI table signature and table ID
15495 to help guarantee uniqueness within a large BIOS project.
15498 ----------------------------------------
15499 Summary of changes for this label: 02_01_02
15501 1) ACPI CA Core Subsystem:
15503 ACPI 2.0 support is complete in the entire Core Subsystem and the
15504 ASL compiler. All new ACPI 2.0 operators are implemented and all
15505 other changes for ACPI 2.0 support are complete. With
15506 simultaneous code and data optimizations throughout the subsystem,
15507 ACPI 2.0 support has been implemented with almost no additional
15508 cost in terms of code and data size.
15510 Implemented a new mechanism for allocation of return buffers. If
15511 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15512 be allocated on behalf of the caller. Consolidated all return
15513 buffer validation and allocation to a common procedure. Return
15514 buffers will be allocated via the primary OSL allocation interface
15515 since it appears that a separate pool is not needed by most users.
15516 If a separate pool is required for these buffers, the caller can
15517 still use the original mechanism and pre-allocate the buffer(s).
15519 Implemented support for string operands within the DerefOf
15522 Restructured the Hardware and Event managers to be table driven,
15523 simplifying the source code and reducing the amount of generated
15526 Split the common read/write low-level ACPI register bitfield
15527 procedure into a separate read and write, simplifying the code
15530 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15531 used only a handful of times and didn't have enough critical mass
15532 for a separate interface. Replaced with a common calloc procedure
15535 Fixed a reported problem with the GPE number mapping mechanism
15536 that allows GPE1 numbers to be non-contiguous with GPE0.
15537 Reorganized the GPE information and shrunk a large array that was
15538 originally large enough to hold info for all possible GPEs (256)
15539 to simply large enough to hold all GPEs up to the largest GPE
15540 number on the machine.
15542 Fixed a reported problem with resource structure alignment on 64-
15545 Changed the AcpiEnableEvent and AcpiDisableEvent external
15546 interfaces to not require any flags for the common case of
15547 enabling/disabling a GPE.
15549 Implemented support to allow a "Notify" on a Processor object.
15551 Most TBDs in comments within the source code have been resolved
15555 Fixed a problem in the interpreter where a standalone parent
15556 prefix (^) was not handled correctly in the interpreter and
15559 Removed obsolete and unnecessary GPE save/restore code.
15561 Implemented Field support in the ASL Load operator. This allows a
15562 table to be loaded from a named field, in addition to loading a
15563 table directly from an Operation Region.
15565 Implemented timeout and handle support in the external Global Lock
15568 Fixed a problem in the AcpiDump utility where pathnames were no
15569 longer being generated correctly during the dump of named objects.
15571 Modified the AML debugger to give a full display of if/while
15572 predicates instead of just one AML opcode at a time. (The
15573 predicate can have several nested ASL statements.) The old method
15574 was confusing during single stepping.
15576 Code and Data Size: Current core subsystem library sizes are shown
15577 below. These are the code and data sizes for the acpica.lib
15578 produced by the Microsoft Visual C++ 6.0 compiler, and these
15579 values do not include any ACPI driver or OSPM code. The debug
15580 version of the code includes the debug output trace mechanism and
15581 has a larger code and data size. Note that these values will vary
15582 depending on the efficiency of the compiler and the compiler
15583 options used during generation.
15585 Previous Release (12_18_01)
15586 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15587 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15589 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15590 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15594 Implemented fix for PIIX reverse throttling errata (Processor
15597 Added new Limit interface (Processor and Thermal drivers)
15599 New thermal policy (Thermal driver)
15601 Many updates to /proc
15603 Battery "low" event support (Battery driver)
15605 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
15607 IA32 - IA64 initialization unification, no longer experimental
15609 Menuconfig options redesigned
15611 3) ASL Compiler, version X2037:
15613 Implemented several new output features to simplify integration of
15614 AML code into firmware: 1) Output the AML in C source code with
15615 labels for each named ASL object. The original ASL source code
15616 is interleaved as C comments. 2) Output the AML in ASM source code
15617 with labels and interleaved ASL source. 3) Output the AML in
15618 raw hex table form, in either C or ASM.
15620 Implemented support for optional string parameters to the
15621 LoadTable operator.
15623 Completed support for embedded escape sequences within string
15624 literals. The compiler now supports all single character escapes
15625 as well as the Octal and Hex escapes. Note: the insertion of a
15626 null byte into a string literal (via the hex/octal escape) causes
15627 the string to be immediately terminated. A warning is issued.
15629 Fixed a problem where incorrect AML was generated for the case
15630 where an ASL namepath consists of a single parent prefix (
15632 ) with no trailing name segments.
15634 The compiler has been successfully generated with a 64-bit C
15640 ----------------------------------------
15641 Summary of changes for this label: 12_18_01
15645 Enhanced blacklist with reason and severity fields. Any table's
15646 signature may now be used to identify a blacklisted system.
15648 Call _PIC control method to inform the firmware which interrupt
15649 model the OS is using. Turn on any disabled link devices.
15651 Cleaned up busmgr /proc error handling (Andreas Dilger)
15653 2) ACPI CA Core Subsystem:
15655 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
15658 Completed implementation of the ACPI 2.0 "Continue",
15659 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
15660 operators. All new ACPI 2.0 operators are now implemented in both
15661 the ASL compiler and the AML interpreter. The only remaining ACPI
15662 2.0 task is support for the String data type in the DerefOf
15663 operator. Fixed a problem with AcquireMutex where the status code
15664 was lost if the caller had to actually wait for the mutex.
15666 Increased the maximum ASL Field size from 64K bits to 4G bits.
15668 Completed implementation of the external Global Lock interfaces --
15669 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
15670 Handler parameters were added.
15672 Completed another pass at removing warnings and issues when
15673 compiling with 64-bit compilers. The code now compiles cleanly
15674 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
15675 add and subtract (diff) macros have changed considerably.
15678 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
15679 64-bit platforms, 32-bits on all others. This type is used
15680 wherever memory allocation and/or the C sizeof() operator is used,
15681 and affects the OSL memory allocation interfaces AcpiOsAllocate
15682 and AcpiOsCallocate.
15684 Implemented sticky user breakpoints in the AML debugger.
15686 Code and Data Size: Current core subsystem library sizes are shown
15687 below. These are the code and data sizes for the acpica.lib
15688 produced by the Microsoft Visual C++ 6.0 compiler, and these
15689 values do not include any ACPI driver or OSPM code. The debug
15690 version of the code includes the debug output trace mechanism and
15691 has a larger code and data size. Note that these values will vary
15692 depending on the efficiency of the compiler and the compiler
15693 options used during generation.
15695 Previous Release (12_05_01)
15696 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15697 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15699 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15700 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15702 3) ASL Compiler, version X2034:
15704 Now checks for (and generates an error if detected) the use of a
15705 Break or Continue statement without an enclosing While statement.
15708 Successfully generated the compiler with the Intel 64-bit C
15711 ----------------------------------------
15712 Summary of changes for this label: 12_05_01
15714 1) ACPI CA Core Subsystem:
15716 The ACPI 2.0 CopyObject operator is fully implemented. This
15717 operator creates a new copy of an object (and is also used to
15718 bypass the "implicit conversion" mechanism of the Store operator.)
15720 The ACPI 2.0 semantics for the SizeOf operator are fully
15721 implemented. The change is that performing a SizeOf on a
15722 reference object causes an automatic dereference of the object to
15723 tha actual value before the size is evaluated. This behavior was
15724 undefined in ACPI 1.0.
15726 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15727 have been implemented. The interrupt polarity and mode are now
15730 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15731 appearing in Package objects were not properly converted to
15732 integers when the internal Package was converted to an external
15733 object (via the AcpiEvaluateObject interface.)
15735 Fixed a problem with the namespace object deletion mechanism for
15736 objects created by control methods. There were two parts to this
15737 problem: 1) Objects created during the initialization phase method
15738 parse were not being deleted, and 2) The object owner ID mechanism
15739 to track objects was broken.
15741 Fixed a problem where the use of the ASL Scope operator within a
15742 control method would result in an invalid opcode exception.
15744 Fixed a problem introduced in the previous label where the buffer
15745 length required for the _PRT structure was not being returned
15748 Code and Data Size: Current core subsystem library sizes are shown
15749 below. These are the code and data sizes for the acpica.lib
15750 produced by the Microsoft Visual C++ 6.0 compiler, and these
15751 values do not include any ACPI driver or OSPM code. The debug
15752 version of the code includes the debug output trace mechanism and
15753 has a larger code and data size. Note that these values will vary
15754 depending on the efficiency of the compiler and the compiler
15755 options used during generation.
15757 Previous Release (11_20_01)
15758 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15759 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15762 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15763 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15767 Updated all files to apply cleanly against 2.4.16.
15769 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15770 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15771 version supports both static and dyanmic PRT entries, but dynamic
15772 entries are treated as if they were static (not yet
15773 reconfigurable). Architecture- specific code to use this data is
15774 absent on IA32 but should be available shortly.
15776 Changed the initialization sequence to start the ACPI interpreter
15777 (acpi_init) prior to initialization of the PCI driver (pci_init)
15778 in init/main.c. This ordering is required to support PRT and
15779 facilitate other (future) enhancement. A side effect is that the
15780 ACPI bus driver and certain device drivers can no longer be loaded
15783 Modified the 'make menuconfig' options to allow PCI Interrupt
15784 Routing support to be included without the ACPI Bus and other
15787 3) ASL Compiler, version X2033:
15789 Fixed some issues with the use of the new CopyObject and
15790 DataTableRegion operators. Both are fully functional.
15792 ----------------------------------------
15793 Summary of changes for this label: 11_20_01
15795 20 November 2001. Summary of changes for this release.
15797 1) ACPI CA Core Subsystem:
15799 Updated Index support to match ACPI 2.0 semantics. Storing a
15800 Integer, String, or Buffer to an Index of a Buffer will store only
15801 the least-significant byte of the source to the Indexed buffer
15802 byte. Multiple writes are not performed.
15804 Fixed a problem where the access type used in an AccessAs ASL
15805 operator was not recorded correctly into the field object.
15807 Fixed a problem where ASL Event objects were created in a
15808 signalled state. Events are now created in an unsignalled state.
15810 The internal object cache is now purged after table loading and
15811 initialization to reduce the use of dynamic kernel memory -- on
15812 the assumption that object use is greatest during the parse phase
15813 of the entire table (versus the run-time use of individual control
15816 ACPI 2.0 variable-length packages are now fully operational.
15818 Code and Data Size: Code and Data optimizations have permitted new
15819 feature development with an actual reduction in the library size.
15820 Current core subsystem library sizes are shown below. These are
15821 the code and data sizes for the acpica.lib produced by the
15822 Microsoft Visual C++ 6.0 compiler, and these values do not include
15823 any ACPI driver or OSPM code. The debug version of the code
15824 includes the debug output trace mechanism and has a larger code
15825 and data size. Note that these values will vary depending on the
15826 efficiency of the compiler and the compiler options used during
15829 Previous Release (11_09_01):
15830 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15831 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15834 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15835 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15839 Enhanced the ACPI boot-time initialization code to allow the use
15840 of Local APIC tables for processor enumeration on IA-32, and to
15841 pave the way for a fully MPS-free boot (on SMP systems) in the
15842 near future. This functionality replaces
15843 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15844 2.4.15-preX release. To enable this feature you must add
15845 "acpi_boot=on" to the kernel command line -- see the help entry
15846 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
15849 Restructured the configuration options to allow boot-time table
15850 parsing support without inclusion of the ACPI Interpreter (and
15853 NOTE: This release does not include fixes for the reported events,
15854 power-down, and thermal passive cooling issues (coming soon).
15858 Added additional typechecking for Fields within restricted access
15859 Operation Regions. All fields within EC and CMOS regions must be
15860 declared with ByteAcc. All fields withing SMBus regions must be
15861 declared with the BufferAcc access type.
15863 Fixed a problem where the listing file output of control methods
15864 no longer interleaved the actual AML code with the ASL source
15870 ----------------------------------------
15871 Summary of changes for this label: 11_09_01
15873 1) ACPI CA Core Subsystem:
15875 Implemented ACPI 2.0-defined support for writes to fields with a
15876 Buffer, String, or Integer source operand that is smaller than the
15877 target field. In these cases, the source operand is zero-extended
15878 to fill the target field.
15880 Fixed a problem where a Field starting bit offset (within the
15881 parent operation region) was calculated incorrectly if the
15883 alignment of the field differed from the access width. This
15884 affected CreateWordField, CreateDwordField, CreateQwordField, and
15885 possibly other fields that use the "AccessAny" keyword.
15887 Fixed a problem introduced in the 11_02_01 release where indirect
15888 stores through method arguments did not operate correctly.
15892 Implemented boot-time ACPI table parsing support
15893 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15894 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15895 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15896 processors, memory, and interrupts during setup_arch(). Note that
15897 this patch does not include the required architecture-specific
15898 changes required to apply this information -- subsequent patches
15899 will be posted for both IA32 and IA64 to achieve this.
15901 Added low-level sleep support for IA32 platforms, courtesy of Pat
15902 Mochel. This allows IA32 systems to transition to/from various
15903 sleeping states (e.g. S1, S3), although the lack of a centralized
15904 driver model and power-manageable drivers will prevent its
15905 (successful) use on most systems.
15907 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15908 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15909 tables" option, etc.
15911 Increased the default timeout for the EC driver from 1ms to 10ms
15912 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15915 ----------------------------------------
15916 Summary of changes for this label: 11_02_01
15918 1) ACPI CA Core Subsystem:
15920 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15921 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15924 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15925 changes to support ACPI 2.0 Qword field access. Read/Write
15926 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15927 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15928 the value parameter for the address space handler interface is now
15929 an ACPI_INTEGER. OSL implementations of these interfaces must now
15930 handle the case where the Width parameter is 64.
15932 Index Fields: Fixed a problem where unaligned bit assembly and
15933 disassembly for IndexFields was not supported correctly.
15935 Index and Bank Fields: Nested Index and Bank Fields are now
15936 supported. During field access, a check is performed to ensure
15937 that the value written to an Index or Bank register is not out of
15938 the range of the register. The Index (or Bank) register is
15939 written before each access to the field data. Future support will
15940 include allowing individual IndexFields to be wider than the
15941 DataRegister width.
15943 Fields: Fixed a problem where the AML interpreter was incorrectly
15944 attempting to write beyond the end of a Field/OpRegion. This was
15945 a boundary case that occurred when a DWORD field was written to a
15946 BYTE access OpRegion, forcing multiple writes and causing the
15947 interpreter to write one datum too many.
15949 Fields: Fixed a problem with Field/OpRegion access where the
15950 starting bit address of a field was incorrectly calculated if the
15951 current access type was wider than a byte (WordAcc, DwordAcc, or
15954 Fields: Fixed a problem where forward references to individual
15955 FieldUnits (individual Field names within a Field definition) were
15956 not resolved during the AML table load.
15958 Fields: Fixed a problem where forward references from a Field
15959 definition to the parent Operation Region definition were not
15960 resolved during the AML table load.
15962 Fields: Duplicate FieldUnit names within a scope are now detected
15963 during AML table load.
15965 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15966 returned an incorrect name for the root node.
15968 Code and Data Size: Code and Data optimizations have permitted new
15969 feature development with an actual reduction in the library size.
15970 Current core subsystem library sizes are shown below. These are
15971 the code and data sizes for the acpica.lib produced by the
15972 Microsoft Visual C++ 6.0 compiler, and these values do not include
15973 any ACPI driver or OSPM code. The debug version of the code
15974 includes the debug output trace mechanism and has a larger code
15975 and data size. Note that these values will vary depending on the
15976 efficiency of the compiler and the compiler options used during
15979 Previous Release (10_18_01):
15980 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15981 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15984 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15985 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15989 Improved /proc processor output (Pavel Machek) Re-added
15990 MODULE_LICENSE("GPL") to all modules.
15992 3) ASL Compiler version X2030:
15994 Duplicate FieldUnit names within a scope are now detected and
15999 Programmer Reference updated to reflect OSL and address space
16000 handler interface changes described above.
16002 ----------------------------------------
16003 Summary of changes for this label: 10_18_01
16005 ACPI CA Core Subsystem:
16007 Fixed a problem with the internal object reference count mechanism
16008 that occasionally caused premature object deletion. This resolves
16009 all of the outstanding problem reports where an object is deleted
16010 in the middle of an interpreter evaluation. Although this problem
16011 only showed up in rather obscure cases, the solution to the
16012 problem involved an adjustment of all reference counts involving
16013 objects attached to namespace nodes.
16015 Fixed a problem with Field support in the interpreter where
16016 writing to an aligned field whose length is an exact multiple (2
16017 or greater) of the field access granularity would cause an attempt
16018 to write beyond the end of the field.
16020 The top level AML opcode execution functions within the
16021 interpreter have been renamed with a more meaningful and
16022 consistent naming convention. The modules exmonad.c and
16023 exdyadic.c were eliminated. New modules are exoparg1.c,
16024 exoparg2.c, exoparg3.c, and exoparg6.c.
16026 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16028 Fixed a problem where the AML debugger was causing some internal
16029 objects to not be deleted during subsystem termination.
16031 Fixed a problem with the external AcpiEvaluateObject interface
16032 where the subsystem would fault if the named object to be
16033 evaluated refered to a constant such as Zero, Ones, etc.
16035 Fixed a problem with IndexFields and BankFields where the
16036 subsystem would fault if the index, data, or bank registers were
16037 not defined in the same scope as the field itself.
16039 Added printf format string checking for compilers that support
16040 this feature. Corrected more than 50 instances of issues with
16041 format specifiers within invocations of ACPI_DEBUG_PRINT
16042 throughout the core subsystem code.
16044 The ASL "Revision" operator now returns the ACPI support level
16045 implemented in the core - the value "2" since the ACPI 2.0 support
16046 is more than 50% implemented.
16048 Enhanced the output of the AML debugger "dump namespace" command
16049 to output in a more human-readable form.
16051 Current core subsystem library code sizes are shown below. These
16053 are the code and data sizes for the acpica.lib produced by the
16054 Microsoft Visual C++ 6.0 compiler, and these values do not include
16055 any ACPI driver or OSPM code. The debug version of the code
16056 includes the full debug trace mechanism -- leading to a much
16058 larger code and data size. Note that these values will vary
16059 depending on the efficiency of the compiler and the compiler
16060 options used during generation.
16062 Previous Label (09_20_01):
16063 Non-Debug Version: 65K Code, 5K Data, 70K Total
16064 Debug Version: 138K Code, 58K Data, 196K Total
16068 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16069 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16073 Implemented a "Bad BIOS Blacklist" to track machines that have
16074 known ASL/AML problems.
16076 Enhanced the /proc interface for the thermal zone driver and added
16077 support for _HOT (the critical suspend trip point). The 'info'
16078 file now includes threshold/policy information, and allows setting
16079 of _SCP (cooling preference) and _TZP (polling frequency) values
16080 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16081 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16082 preference to the passive/quiet mode (if supported by the ASL).
16084 Implemented a workaround for a gcc bug that resuted in an OOPs
16085 when loading the control method battery driver.
16087 ----------------------------------------
16088 Summary of changes for this label: 09_20_01
16090 ACPI CA Core Subsystem:
16092 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16093 modified to allow individual GPE levels to be flagged as wake-
16094 enabled (i.e., these GPEs are to remain enabled when the platform
16097 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16098 support wake-enabled GPEs. This means that upon entering the
16099 sleep state, all GPEs that are not wake-enabled are disabled.
16100 When leaving the sleep state, these GPEs are reenabled.
16102 A local double-precision divide/modulo module has been added to
16103 enhance portability to OS kernels where a 64-bit math library is
16104 not available. The new module is "utmath.c".
16106 Several optimizations have been made to reduce the use of CPU
16107 stack. Originally over 2K, the maximum stack usage is now below
16108 2K at 1860 bytes (1.82k)
16110 Fixed a problem with the AcpiGetFirmwareTable interface where the
16111 root table pointer was not mapped into a logical address properly.
16113 Fixed a problem where a NULL pointer was being dereferenced in the
16114 interpreter code for the ASL Notify operator.
16116 Fixed a problem where the use of the ASL Revision operator
16117 returned an error. This operator now returns the current version
16118 of the ACPI CA core subsystem.
16120 Fixed a problem where objects passed as control method parameters
16121 to AcpiEvaluateObject were always deleted at method termination.
16122 However, these objects may end up being stored into the namespace
16123 by the called method. The object reference count mechanism was
16124 applied to these objects instead of a force delete.
16126 Fixed a problem where static strings or buffers (contained in the
16127 AML code) that are declared as package elements within the ASL
16128 code could cause a fault because the interpreter would attempt to
16129 delete them. These objects are now marked with the "static
16130 object" flag to prevent any attempt to delete them.
16132 Implemented an interpreter optimization to use operands directly
16133 from the state object instead of extracting the operands to local
16134 variables. This reduces stack use and code size, and improves
16137 The module exxface.c was eliminated as it was an unnecessary extra
16140 Current core subsystem library code sizes are shown below. These
16141 are the code and data sizes for the acpica.lib produced by the
16142 Microsoft Visual C++ 6.0 compiler, and these values do not include
16143 any ACPI driver or OSPM code. The debug version of the code
16144 includes the full debug trace mechanism -- leading to a much
16145 larger code and data size. Note that these values will vary
16146 depending on the efficiency of the compiler and the compiler
16147 options used during generation.
16149 Non-Debug Version: 65K Code, 5K Data, 70K Total
16150 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16151 Total (Previously 195K)
16155 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16156 Integer objects are now 64 bits wide
16158 All Acpi data types and structures are now in lower case. Only
16159 Acpi macros are upper case for differentiation.
16163 Changes to the external interfaces as described above.
16165 ----------------------------------------
16166 Summary of changes for this label: 08_31_01
16168 ACPI CA Core Subsystem:
16170 A bug with interpreter implementation of the ASL Divide operator
16171 was found and fixed. The implicit function return value (not the
16172 explicit store operands) was returning the remainder instead of
16173 the quotient. This was a longstanding bug and it fixes several
16174 known outstanding issues on various platforms.
16176 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16177 been further optimized for size. There are 700 invocations of the
16178 DEBUG_PRINT macro alone, so each optimization reduces the size of
16179 the debug version of the subsystem significantly.
16181 A stack trace mechanism has been implemented. The maximum stack
16182 usage is about 2K on 32-bit platforms. The debugger command "stat
16183 stack" will display the current maximum stack usage.
16185 All public symbols and global variables within the subsystem are
16186 now prefixed with the string "Acpi". This keeps all of the
16187 symbols grouped together in a kernel map, and avoids conflicts
16188 with other kernel subsystems.
16190 Most of the internal fixed lookup tables have been moved into the
16191 code segment via the const operator.
16193 Several enhancements have been made to the interpreter to both
16194 reduce the code size and improve performance.
16196 Current core subsystem library code sizes are shown below. These
16197 are the code and data sizes for the acpica.lib produced by the
16198 Microsoft Visual C++ 6.0 compiler, and these values do not include
16199 any ACPI driver or OSPM code. The debug version of the code
16200 includes the full debug trace mechanism which contains over 700
16201 invocations of the DEBUG_PRINT macro, 500 function entry macro
16202 invocations, and over 900 function exit macro invocations --
16203 leading to a much larger code and data size. Note that these
16204 values will vary depending on the efficiency of the compiler and
16205 the compiler options used during generation.
16207 Non-Debug Version: 64K Code, 5K Data, 69K Total
16208 Debug Version: 137K Code, 58K Data, 195K Total
16212 Implemented wbinvd() macro, pending a kernel-wide definition.
16214 Fixed /proc/acpi/event to handle poll() and short reads.
16216 ASL Compiler, version X2026:
16218 Fixed a problem introduced in the previous label where the AML
16220 code emitted for package objects produced packages with zero
16223 ----------------------------------------
16224 Summary of changes for this label: 08_16_01
16226 ACPI CA Core Subsystem:
16228 The following ACPI 2.0 ASL operators have been implemented in the
16229 AML interpreter (These are already supported by the Intel ASL
16230 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16231 ToBuffer. Support for 64-bit AML constants is implemented in the
16232 AML parser, debugger, and disassembler.
16234 The internal memory tracking mechanism (leak detection code) has
16235 been upgraded to reduce the memory overhead (a separate tracking
16236 block is no longer allocated for each memory allocation), and now
16237 supports all of the internal object caches.
16239 The data structures and code for the internal object caches have
16240 been coelesced and optimized so that there is a single cache and
16241 memory list data structure and a single group of functions that
16242 implement generic cache management. This has reduced the code
16243 size in both the debug and release versions of the subsystem.
16245 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16246 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16247 different, because it generates a single call to an internal
16248 function. This results in a savings of about 90 bytes per
16249 invocation, resulting in an overall code and data savings of about
16250 16% in the debug version of the subsystem.
16254 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16257 Integrated low-level sleep code by Patrick Mochel.
16259 Further tweaked source code Linuxization.
16265 Support for ACPI 2.0 variable length packages is fixed/completed.
16267 Fixed a problem where the optional length parameter for the ACPI
16268 2.0 ToString operator.
16270 Fixed multiple extraneous error messages when a syntax error is
16271 detected within the declaration line of a control method.
16273 ----------------------------------------
16274 Summary of changes for this label: 07_17_01
16276 ACPI CA Core Subsystem:
16278 Added a new interface named AcpiGetFirmwareTable to obtain any
16279 ACPI table via the ACPI signature. The interface can be called at
16280 any time during kernel initialization, even before the kernel
16281 virtual memory manager is initialized and paging is enabled. This
16282 allows kernel subsystems to obtain ACPI tables very early, even
16283 before the ACPI CA subsystem is initialized.
16285 Fixed a problem where Fields defined with the AnyAcc attribute
16286 could be resolved to the incorrect address under the following
16287 conditions: 1) the field width is larger than 8 bits and 2) the
16288 parent operation region is not defined on a DWORD boundary.
16290 Fixed a problem where the interpreter is not being locked during
16291 namespace initialization (during execution of the _INI control
16292 methods), causing an error when an attempt is made to release it
16295 ACPI 2.0 support in the AML Interpreter has begun and will be
16296 ongoing throughout the rest of this year. In this label, The Mod
16297 operator is implemented.
16299 Added a new data type to contain full PCI addresses named
16300 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16301 and Function values.
16305 Enhanced the Linux version of the source code to change most
16306 capitalized ACPI type names to lowercase. For example, all
16307 instances of ACPI_STATUS are changed to acpi_status. This will
16308 result in a large diff, but the change is strictly cosmetic and
16309 aligns the CA code closer to the Linux coding standard.
16313 The interfaces to the PCI configuration space have been changed to
16314 add the PCI Segment number and to split the single 32-bit combined
16315 DeviceFunction field into two 16-bit fields. This was
16316 accomplished by moving the four values that define an address in
16317 PCI configuration space (segment, bus, device, and function) to
16318 the new ACPI_PCI_ID structure.
16320 The changes to the PCI configuration space interfaces led to a
16321 reexamination of the complete set of address space access
16322 interfaces for PCI, I/O, and Memory. The previously existing 18
16323 interfaces have proven difficult to maintain (any small change
16324 must be propagated across at least 6 interfaces) and do not easily
16325 allow for future expansion to 64 bits if necessary. Also, on some
16326 systems, it would not be appropriate to demultiplex the access
16327 width (8, 16, 32,or 64) before calling the OSL if the
16328 corresponding native OS interfaces contain a similar access width
16329 parameter. For these reasons, the 18 address space interfaces
16330 have been replaced by these 6 new ones:
16332 AcpiOsReadPciConfiguration
16333 AcpiOsWritePciConfiguration
16339 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16340 to perform the platform and/or OS-specific actions necessary to
16341 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16342 interface will simply call down to the CA core to perform the low-
16343 memory search for the table. On IA-64, the RSDP is obtained from
16344 EFI. Migrating this interface to the OSL allows the CA core to
16346 remain OS and platform independent.
16348 Added a new interface named AcpiOsSignal to provide a generic
16349 "function code and pointer" interface for various miscellaneous
16350 signals and notifications that must be made to the host OS. The
16351 first such signals are intended to support the ASL Fatal and
16352 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16353 interface has been obsoleted.
16355 The definition of the AcpiFormatException interface has been
16356 changed to simplify its use. The caller no longer must supply a
16357 buffer to the call; A pointer to a const string is now returned
16358 directly. This allows the call to be easily used in printf
16359 statements, etc. since the caller does not have to manage a local
16363 ASL Compiler, Version X2025:
16365 The ACPI 2.0 Switch/Case/Default operators have been implemented
16366 and are fully functional. They will work with all ACPI 1.0
16367 interpreters, since the operators are simply translated to If/Else
16370 The ACPI 2.0 ElseIf operator is implemented and will also work
16371 with 1.0 interpreters, for the same reason.
16373 Implemented support for ACPI 2.0 variable-length packages. These
16374 packages have a separate opcode, and their size is determined by
16375 the interpreter at run-time.
16377 Documentation The ACPI CA Programmer Reference has been updated to
16378 reflect the new interfaces and changes to existing interfaces.
16380 ------------------------------------------
16381 Summary of changes for this label: 06_15_01
16383 ACPI CA Core Subsystem:
16385 Fixed a problem where a DWORD-accessed field within a Buffer
16386 object would get its byte address inadvertently rounded down to
16387 the nearest DWORD. Buffers are always Byte-accessible.
16389 ASL Compiler, version X2024:
16391 Fixed a problem where the Switch() operator would either fault or
16392 hang the compiler. Note however, that the AML code for this ACPI
16393 2.0 operator is not yet implemented.
16395 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16398 Implementation of the CreateField operator automatically converts
16399 a reference to a named field within a resource descriptor from a
16400 byte offset to a bit offset if required.
16402 Added some missing named fields from the resource descriptor
16403 support. These are the names that are automatically created by the
16404 compiler to reference fields within a descriptor. They are only
16405 valid at compile time and are not passed through to the AML
16408 Resource descriptor named fields are now typed as Integers and
16409 subject to compile-time typechecking when used in expressions.
16411 ------------------------------------------
16412 Summary of changes for this label: 05_18_01
16414 ACPI CA Core Subsystem:
16416 Fixed a couple of problems in the Field support code where bits
16417 from adjacent fields could be returned along with the proper field
16418 bits. Restructured the field support code to improve performance,
16419 readability and maintainability.
16421 New DEBUG_PRINTP macro automatically inserts the procedure name
16422 into the output, saving hundreds of copies of procedure name
16423 strings within the source, shrinking the memory footprint of the
16424 debug version of the core subsystem.
16426 Source Code Structure:
16428 The source code directory tree was restructured to reflect the
16429 current organization of the component architecture. Some files
16430 and directories have been moved and/or renamed.
16434 Fixed leaking kacpidpc processes.
16436 Fixed queueing event data even when /proc/acpi/event is not
16439 ASL Compiler, version X2020:
16441 Memory allocation performance enhancement - over 24X compile time
16442 improvement on large ASL files. Parse nodes and namestring
16443 buffers are now allocated from a large internal compiler buffer.
16445 The temporary .SRC file is deleted unless the "-s" option is
16448 The "-d" debug output option now sends all output to the .DBG file
16449 instead of the console.
16451 "External" second parameter is now optional
16453 "ElseIf" syntax now properly allows the predicate
16455 Last operand to "Load" now recognized as a Target operand
16457 Debug object can now be used anywhere as a normal object.
16459 ResourceTemplate now returns an object of type BUFFER
16461 EISAID now returns an object of type INTEGER
16463 "Index" now works with a STRING operand
16465 "LoadTable" now accepts optional parameters
16467 "ToString" length parameter is now optional
16469 "Interrupt (ResourceType," parse error fixed.
16471 "Register" with a user-defined region space parse error fixed
16473 Escaped backslash at the end of a string ("\\") scan/parse error
16476 "Revision" is now an object of type INTEGER.
16480 ------------------------------------------
16481 Summary of changes for this label: 05_02_01
16485 /proc/acpi/event now blocks properly.
16487 Removed /proc/sys/acpi. You can still dump your DSDT from
16490 ACPI CA Core Subsystem:
16492 Fixed a problem introduced in the previous label where some of the
16493 "small" resource descriptor types were not recognized.
16495 Improved error messages for the case where an ASL Field is outside
16496 the range of the parent operation region.
16498 ASL Compiler, version X2018:
16501 Added error detection for ASL Fields that extend beyond the length
16502 of the parent operation region (only if the length of the region
16503 is known at compile time.) This includes fields that have a
16504 minimum access width that is smaller than the parent region, and
16505 individual field units that are partially or entirely beyond the
16506 extent of the parent.
16510 ------------------------------------------
16511 Summary of changes for this label: 04_27_01
16513 ACPI CA Core Subsystem:
16515 Fixed a problem where the namespace mutex could be released at the
16516 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16518 Added optional thread ID output for debug traces, to simplify
16519 debugging of multiple threads. Added context switch notification
16520 when the debug code realizes that a different thread is now
16521 executing ACPI code.
16523 Some additional external data types have been prefixed with the
16524 string "ACPI_" for consistency. This may effect existing code.
16525 The data types affected are the external callback typedefs - e.g.,
16527 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16531 Fixed an issue with the OSL semaphore implementation where a
16532 thread was waking up with an error from receiving a SIGCHLD
16535 Linux version of ACPI CA now uses the system C library for string
16536 manipulation routines instead of a local implementation.
16538 Cleaned up comments and removed TBDs.
16540 ASL Compiler, version X2017:
16542 Enhanced error detection and reporting for all file I/O
16547 Programmer Reference updated to version 1.06.
16551 ------------------------------------------
16552 Summary of changes for this label: 04_13_01
16554 ACPI CA Core Subsystem:
16556 Restructured support for BufferFields and RegionFields.
16557 BankFields support is now fully operational. All known 32-bit
16558 limitations on field sizes have been removed. Both BufferFields
16559 and (Operation) RegionFields are now supported by the same field
16562 Resource support now supports QWORD address and IO resources. The
16563 16/32/64 bit address structures and the Extended IRQ structure
16564 have been changed to properly handle Source Resource strings.
16566 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16567 condition internally and must never be returned by AcpiOsThreadId.
16568 This reserved value was changed from 0 since Unix systems allow a
16573 Driver code reorganized to enhance portability
16575 Added a kernel configuration option to control ACPI_DEBUG
16577 Fixed the EC driver to honor _GLK.
16579 ASL Compiler, version X2016:
16581 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16582 address space was set to 0, not 0x7f as it should be.
16584 ------------------------------------------
16585 Summary of changes for this label: 03_13_01
16587 ACPI CA Core Subsystem:
16589 During ACPI initialization, the _SB_._INI method is now run if
16592 Notify handler fix - notifies are deferred until the parent method
16593 completes execution. This fixes the "mutex already acquired"
16594 issue seen occasionally.
16596 Part of the "implicit conversion" rules in ACPI 2.0 have been
16597 found to cause compatibility problems with existing ASL/AML. The
16598 convert "result-to-target-type" implementation has been removed
16599 for stores to method Args and Locals. Source operand conversion
16600 is still fully implemented. Possible changes to ACPI 2.0
16601 specification pending.
16603 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
16606 Fix for compiler warnings for 64-bit compiles.
16610 /proc output aligned for easier parsing.
16612 Release-version compile problem fixed.
16614 New kernel configuration options documented in Configure.help.
16616 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
16621 Power resource driver integrated with bus manager.
16623 Fixed kernel fault during active cooling for thermal zones.
16627 The source code tree has been restructured.
16631 ------------------------------------------
16632 Summary of changes for this label: 03_02_01
16634 Linux OS Services Layer (OSL):
16636 Major revision of all Linux-specific code.
16638 Modularized all ACPI-specific drivers.
16640 Added new thermal zone and power resource drivers.
16642 Revamped /proc interface (new functionality is under /proc/acpi).
16644 New kernel configuration options.
16646 Linux known issues:
16648 New kernel configuration options not documented in Configure.help
16652 Module dependencies not currently implemented. If used, they
16653 should be loaded in this order: busmgr, power, ec, system,
16654 processor, battery, ac_adapter, button, thermal.
16656 Modules will not load if CONFIG_MODVERSION is set.
16658 IBM 600E - entering S5 may reboot instead of shutting down.
16660 IBM 600E - Sleep button may generate "Invalid <NULL> context"
16663 Some systems may fail with "execution mutex already acquired"
16666 ACPI CA Core Subsystem:
16668 Added a new OSL Interface, AcpiOsGetThreadId. This was required
16669 for the deadlock detection code. Defined to return a non-zero, 32-
16670 bit thread ID for the currently executing thread. May be a non-
16671 zero constant integer on single-thread systems.
16673 Implemented deadlock detection for internal subsystem mutexes. We
16674 may add conditional compilation for this code (debug only) later.
16676 ASL/AML Mutex object semantics are now fully supported. This
16677 includes multiple acquires/releases by owner and support for the
16679 Mutex SyncLevel parameter.
16681 A new "Force Release" mechanism automatically frees all ASL
16682 Mutexes that have been acquired but not released when a thread
16683 exits the interpreter. This forces conformance to the ACPI spec
16684 ("All mutexes must be released when an invocation exits") and
16685 prevents deadlocked ASL threads. This mechanism can be expanded
16686 (later) to monitor other resource acquisitions if OEM ASL code
16687 continues to misbehave (which it will).
16689 Several new ACPI exception codes have been added for the Mutex
16692 Recursive method calls are now allowed and supported (the ACPI
16693 spec does in fact allow recursive method calls.) The number of
16694 recursive calls is subject to the restrictions imposed by the
16695 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
16698 Implemented support for the SyncLevel parameter for control
16699 methods (ACPI 2.0 feature)
16701 Fixed a deadlock problem when multiple threads attempted to use
16704 Fixed a problem where the string length of a String package
16705 element was not always set in a package returned from
16706 AcpiEvaluateObject.
16708 Fixed a problem where the length of a String package element was
16709 not always included in the length of the overall package returned
16710 from AcpiEvaluateObject.
16712 Added external interfaces (Acpi*) to the ACPI debug memory
16713 manager. This manager keeps a list of all outstanding
16714 allocations, and can therefore detect memory leaks and attempts to
16715 free memory blocks more than once. Useful for code such as the
16716 power manager, etc. May not be appropriate for device drivers.
16717 Performance with the debug code enabled is slow.
16719 The ACPI Global Lock is now an optional hardware element.
16721 ASL Compiler Version X2015:
16723 Integrated changes to allow the compiler to be generated on
16724 multiple platforms.
16726 Linux makefile added to generate the compiler on Linux
16730 All platform-specific headers have been moved to their own
16731 subdirectory, Include/Platform.
16733 New source file added, Interpreter/ammutex.c
16735 New header file, Include/acstruct.h
16739 The programmer reference has been updated for the following new
16740 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16742 ------------------------------------------
16743 Summary of changes for this label: 02_08_01
16745 Core ACPI CA Subsystem: Fixed a problem where an error was
16746 incorrectly returned if the return resource buffer was larger than
16747 the actual data (in the resource interfaces).
16749 References to named objects within packages are resolved to the
16751 full pathname string before packages are returned directly (via
16752 the AcpiEvaluateObject interface) or indirectly via the resource
16755 Linux OS Services Layer (OSL):
16757 Improved /proc battery interface.
16760 Added C-state debugging output and other miscellaneous fixes.
16762 ASL Compiler Version X2014:
16764 All defined method arguments can now be used as local variables,
16765 including the ones that are not actually passed in as parameters.
16766 The compiler tracks initialization of the arguments and issues an
16767 exception if they are used without prior assignment (just like
16770 The -o option now specifies a filename prefix that is used for all
16771 output files, including the AML output file. Otherwise, the
16772 default behavior is as follows: 1) the AML goes to the file
16773 specified in the DSDT. 2) all other output files use the input
16774 source filename as the base.
16776 ------------------------------------------
16777 Summary of changes for this label: 01_25_01
16779 Core ACPI CA Subsystem: Restructured the implementation of object
16780 store support within the interpreter. This includes support for
16781 the Store operator as well as any ASL operators that include a
16784 Partially implemented support for Implicit Result-to-Target
16785 conversion. This is when a result object is converted on the fly
16786 to the type of an existing target object. Completion of this
16787 support is pending further analysis of the ACPI specification
16788 concerning this matter.
16790 CPU-specific code has been removed from the subsystem (hardware
16793 New Power Management Timer functions added
16795 Linux OS Services Layer (OSL): Moved system state transition code
16796 to the core, fixed it, and modified Linux OSL accordingly.
16798 Fixed C2 and C3 latency calculations.
16801 We no longer use the compilation date for the version message on
16802 initialization, but retrieve the version from AcpiGetSystemInfo().
16804 Incorporated for fix Sony VAIO machines.
16806 Documentation: The Programmer Reference has been updated and
16810 ASL Compiler: Version X2013: Fixed a problem where the line
16811 numbering and error reporting could get out of sync in the
16812 presence of multiple include files.
16814 ------------------------------------------
16815 Summary of changes for this label: 01_15_01
16817 Core ACPI CA Subsystem:
16819 Implemented support for type conversions in the execution of the
16820 ASL Concatenate operator (The second operand is converted to
16821 match the type of the first operand before concatenation.)
16823 Support for implicit source operand conversion is partially
16824 implemented. The ASL source operand types Integer, Buffer, and
16825 String are freely interchangeable for most ASL operators and are
16826 converted by the interpreter on the fly as required. Implicit
16827 Target operand conversion (where the result is converted to the
16828 target type before storing) is not yet implemented.
16830 Support for 32-bit and 64-bit BCD integers is implemented.
16832 Problem fixed where a field read on an aligned field could cause a
16833 read past the end of the field.
16835 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16836 does not return a value, but the caller expects one. (The ASL
16837 compiler flags this as a warning.)
16842 1. Static typechecking of all operands is implemented. This
16843 prevents the use of invalid objects (such as using a Package where
16844 an Integer is required) at compile time instead of at interpreter
16846 2. The ASL source line is printed with ALL errors and warnings.
16847 3. Bug fix for source EOF without final linefeed.
16848 4. Debug option is split into a parse trace and a namespace trace.
16849 5. Namespace output option (-n) includes initial values for
16850 integers and strings.
16851 6. Parse-only option added for quick syntax checking.
16852 7. Compiler checks for duplicate ACPI name declarations
16855 1. Relaxed typechecking to allow interchangeability between
16856 strings, integers, and buffers. These types are now converted by
16857 the interpreter at runtime.
16858 2. Compiler reports time taken by each internal subsystem in the
16862 ------------------------------------------
16863 Summary of changes for this label: 12_14_00
16867 This is the first official release of the compiler. Since the
16868 compiler requires elements of the Core Subsystem, this label
16869 synchronizes everything.
16871 ------------------------------------------
16872 Summary of changes for this label: 12_08_00
16875 Fixed a problem where named references within the ASL definition
16876 of both OperationRegions and CreateXXXFields did not work
16877 properly. The symptom was an AE_AML_OPERAND_TYPE during
16878 initialization of the region/field. This is similar (but not
16879 related internally) to the problem that was fixed in the last
16882 Implemented both 32-bit and 64-bit support for the BCD ASL
16883 functions ToBCD and FromBCD.
16885 Updated all legal headers to include "2000" in the copyright
16888 ------------------------------------------
16889 Summary of changes for this label: 12_01_00
16891 Fixed a problem where method invocations within the ASL definition
16892 of both OperationRegions and CreateXXXFields did not work
16893 properly. The symptom was an AE_AML_OPERAND_TYPE during
16894 initialization of the region/field:
16896 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16897 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16900 Fixed a problem where operators with more than one nested
16901 subexpression would fail. The symptoms were varied, by mostly
16902 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16903 problem that has gone unnoticed until now.
16905 Subtract (Add (1,2), Multiply (3,4))
16907 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16908 previous build (The prefix part of a relative path was handled
16911 Fixed a problem where Operation Region initialization failed if
16912 the operation region name was a "namepath" instead of a simple
16913 "nameseg". Symptom was an AE_NO_OPERAND error.
16915 Fixed a problem where an assignment to a local variable via the
16916 indirect RefOf mechanism only worked for the first such
16917 assignment. Subsequent assignments were ignored.
16919 ------------------------------------------
16920 Summary of changes for this label: 11_15_00
16922 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16923 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16924 the AML interpreter does NOT have support for the new 2.0 ASL
16925 grammar terms at this time.
16927 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16930 All physical memory addresses across all platforms are now 64 bits
16931 wide. Logical address width remains dependent on the platform
16934 AcpiOsMapMemory interface changed to a 64-bit physical address.
16936 The AML interpreter integer size is now 64 bits, as per the ACPI
16939 For backwards compatibility with ACPI 1.0, ACPI tables with a
16940 revision number less than 2 use 32-bit integers only.
16942 Fixed a problem where the evaluation of OpRegion operands did not
16943 always resolve them to numbers properly.
16945 ------------------------------------------
16946 Summary of changes for this label: 10_20_00
16948 Fix for CBN_._STA issue. This fix will allow correct access to
16949 CBN_ OpRegions when the _STA returns 0x8.
16951 Support to convert ACPI constants (Ones, Zeros, One) to actual
16952 values before a package object is returned
16954 Fix for method call as predicate to if/while construct causing
16955 incorrect if/while behavior
16957 Fix for Else block package lengths sometimes calculated wrong (if
16960 Fix for Processor object length field, was always zero
16962 Table load abort if FACP sanity check fails
16964 Fix for problem with Scope(name) if name already exists
16966 Warning emitted if a named object referenced cannot be found
16967 (resolved) during method execution.
16973 ------------------------------------------
16974 Summary of changes for this label: 9_29_00
16976 New table initialization interfaces: AcpiInitializeSubsystem no
16977 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16978 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16979 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16982 Note: These interface changes require changes to all existing OSDs
16984 The PCI_Config default address space handler is always installed
16985 at the root namespace object.
16987 -------------------------------------------
16988 Summary of changes for this label: 09_15_00
16990 The new initialization architecture is implemented. New
16991 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16992 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16994 (Namespace is automatically loaded when a table is loaded)
16996 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16997 52 bytes to 32 bytes. There is usually one of these for every
16998 namespace object, so the memory savings is significant.
17000 Implemented just-in-time evaluation of the CreateField operators.
17002 Bug fixes for IA-64 support have been integrated.
17004 Additional code review comments have been implemented
17006 The so-called "third pass parse" has been replaced by a final walk
17007 through the namespace to initialize all operation regions (address
17008 spaces) and fields that have not yet been initialized during the
17009 execution of the various _INI and REG methods.
17011 New file - namespace/nsinit.c
17013 -------------------------------------------
17014 Summary of changes for this label: 09_01_00
17016 Namespace manager data structures have been reworked to change the
17017 primary object from a table to a single object. This has
17018 resulted in dynamic memory savings of 3X within the namespace and
17019 2X overall in the ACPI CA subsystem.
17021 Fixed problem where the call to AcpiEvFindPciRootBuses was
17022 inadvertently left commented out.
17024 Reduced the warning count when generating the source with the GCC
17027 Revision numbers added to each module header showing the
17028 SourceSafe version of the file. Please refer to this version
17029 number when giving us feedback or comments on individual modules.
17031 The main object types within the subsystem have been renamed to
17032 clarify their purpose:
17034 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17035 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17036 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17038 NOTE: no changes to the initialization sequence are included in
17041 -------------------------------------------
17042 Summary of changes for this label: 08_23_00
17044 Fixed problem where TerminateControlMethod was being called
17045 multiple times per method
17047 Fixed debugger problem where single stepping caused a semaphore to
17050 Improved performance through additional parse object caching -
17051 added ACPI_EXTENDED_OP type
17053 -------------------------------------------
17054 Summary of changes for this label: 08_10_00
17056 Parser/Interpreter integration: Eliminated the creation of
17057 complete parse trees for ACPI tables and control methods.
17058 Instead, parse subtrees are created and then deleted as soon as
17059 they are processed (Either entered into the namespace or executed
17060 by the interpreter). This reduces the use of dynamic kernel
17061 memory significantly. (about 10X)
17063 Exception codes broken into classes and renumbered. Be sure to
17064 recompile all code that includes acexcep.h. Hopefully we won't
17065 have to renumber the codes again now that they are split into
17066 classes (environment, programmer, AML code, ACPI table, and
17069 Fixed some additional alignment issues in the Resource Manager
17072 Implemented semaphore tracking in the AcpiExec utility, and fixed
17073 several places where mutexes/semaphores were being unlocked
17074 without a corresponding lock operation. There are no known
17075 semaphore or mutex "leaks" at this time.
17077 Fixed the case where an ASL Return operator is used to return an
17080 -------------------------------------------
17081 Summary of changes for this label: 07_28_00
17083 Fixed a problem with the way addresses were calculated in
17084 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17085 manifested itself when a Field was created with WordAccess or
17086 DwordAccess, but the field unit defined within the Field was less
17088 than a Word or Dword.
17090 Fixed a problem in AmlDumpOperands() module's loop to pull
17091 operands off of the operand stack to display information. The
17092 problem manifested itself as a TLB error on 64-bit systems when
17093 accessing an operand stack with two or more operands.
17095 Fixed a problem with the PCI configuration space handlers where
17096 context was getting confused between accesses. This required a
17097 change to the generic address space handler and address space
17098 setup definitions. Handlers now get both a global handler context
17099 (this is the one passed in by the user when executing
17100 AcpiInstallAddressSpaceHandler() and a specific region context
17101 that is unique to each region (For example, the _ADR, _SEG and
17102 _BBN values associated with a specific region). The generic
17103 function definitions have changed to the following:
17105 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17106 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17107 *HandlerContext, // This used to be void *Context void
17108 *RegionContext); // This is an additional parameter
17110 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17111 RegionHandle, UINT32 Function, void *HandlerContext, void
17112 **RegionContext); // This used to be **ReturnContext
17114 -------------------------------------------
17115 Summary of changes for this label: 07_21_00
17117 Major file consolidation and rename. All files within the
17118 interpreter have been renamed as well as most header files. This
17119 was done to prevent collisions with existing files in the host
17120 OSs -- filenames such as "config.h" and "global.h" seem to be
17121 quite common. The VC project files have been updated. All
17122 makefiles will require modification.
17124 The parser/interpreter integration continues in Phase 5 with the
17125 implementation of a complete 2-pass parse (the AML is parsed
17126 twice) for each table; This avoids the construction of a huge
17127 parse tree and therefore reduces the amount of dynamic memory
17128 required by the subsystem. Greater use of the parse object cache
17129 means that performance is unaffected.
17131 Many comments from the two code reviews have been rolled in.
17133 The 64-bit alignment support is complete.
17135 -------------------------------------------
17136 Summary of changes for this label: 06_30_00
17138 With a nod and a tip of the hat to the technology of yesteryear,
17139 we've added support in the source code for 80 column output
17140 devices. The code is now mostly constrained to 80 columns or
17141 less to support environments and editors that 1) cannot display
17142 or print more than 80 characters on a single line, and 2) cannot
17143 disable line wrapping.
17145 A major restructuring of the namespace data structure has been
17146 completed. The result is 1) cleaner and more
17147 understandable/maintainable code, and 2) a significant reduction
17148 in the dynamic memory requirement for each named ACPI object
17151 -------------------------------------------
17152 Summary of changes for this label: 06_23_00
17154 Linux support has been added. In order to obtain approval to get
17155 the ACPI CA subsystem into the Linux kernel, we've had to make
17156 quite a few changes to the base subsystem that will affect all
17157 users (all the changes are generic and OS- independent). The
17158 effects of these global changes have been somewhat far reaching.
17159 Files have been merged and/or renamed and interfaces have been
17160 renamed. The major changes are described below.
17162 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17163 pollution/confusion within our target kernels. All OSD
17164 interfaces must be modified to match the new naming convention.
17166 Files merged across the subsystem. A number of the smaller source
17167 and header files have been merged to reduce the file count and
17168 increase the density of the existing files. There are too many
17169 to list here. In general, makefiles that call out individual
17170 files will require rebuilding.
17172 Interpreter files renamed. All interpreter files now have the
17173 prefix am* instead of ie* and is*.
17175 Header files renamed: The acapi.h file is now acpixf.h. The
17176 acpiosd.h file is now acpiosxf.h. We are removing references to
17177 the acronym "API" since it is somewhat windowsy. The new name is
17178 "external interface" or xface or xf in the filenames.j
17181 All manifest constants have been forced to upper case (some were
17182 mixed case.) Also, the string "ACPI_" has been prepended to many
17183 (not all) of the constants, typedefs, and structs.
17185 The globals "DebugLevel" and "DebugLayer" have been renamed
17186 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17188 All other globals within the subsystem are now prefixed with
17189 "AcpiGbl_" Internal procedures within the subsystem are now
17190 prefixed with "Acpi" (with only a few exceptions). The original
17191 two-letter abbreviation for the subcomponent remains after "Acpi"
17192 - for example, CmCallocate became AcpiCmCallocate.
17194 Added a source code translation/conversion utility. Used to
17195 generate the Linux source code, it can be modified to generate
17196 other types of source as well. Can also be used to cleanup
17197 existing source by removing extraneous spaces and blank lines.
17198 Found in tools/acpisrc/*
17200 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17201 AcpiOsUnmapMemory. (UnMap became Unmap).
17203 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17204 When set to one, this indicates that the caller wants to use the
17206 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17207 both types. However, implementers of this call may want to use
17208 different OS primitives depending on the type of semaphore
17209 requested. For example, some operating systems provide separate
17211 "mutex" and "semaphore" interfaces - where the mutex interface is
17212 much faster because it doesn't have all the overhead of a full
17213 semaphore implementation.
17215 Fixed a deadlock problem where a method that accesses the PCI
17216 address space can block forever if it is the first access to the
17219 -------------------------------------------
17220 Summary of changes for this label: 06_02_00
17222 Support for environments that cannot handle unaligned data
17223 accesses (e.g. firmware and OS environments devoid of alignment
17224 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17225 been added (via configurable macros) in these three areas: -
17226 Transfer of data from the raw AML byte stream is done via byte
17227 moves instead of word/dword/qword moves. - External objects are
17228 aligned within the user buffer, including package elements (sub-
17229 objects). - Conversion of name strings to UINT32 Acpi Names is now
17232 The Store operator was modified to mimic Microsoft's
17233 implementation when storing to a Buffer Field.
17235 Added a check of the BM_STS bit before entering C3.
17237 The methods subdirectory has been obsoleted and removed. A new
17238 file, cmeval.c subsumes the functionality.
17240 A 16-bit (DOS) version of AcpiExec has been developed. The
17241 makefile is under the acpiexec directory.